1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 1999 - 2024 Intel Corporation. */ 3 4 #include <linux/types.h> 5 #include <linux/module.h> 6 #include <linux/pci.h> 7 #include <linux/netdevice.h> 8 #include <linux/vmalloc.h> 9 #include <linux/string.h> 10 #include <linux/in.h> 11 #include <linux/interrupt.h> 12 #include <linux/ip.h> 13 #include <linux/tcp.h> 14 #include <linux/sctp.h> 15 #include <linux/pkt_sched.h> 16 #include <linux/ipv6.h> 17 #include <linux/slab.h> 18 #include <net/checksum.h> 19 #include <net/ip6_checksum.h> 20 #include <linux/etherdevice.h> 21 #include <linux/ethtool.h> 22 #include <linux/if.h> 23 #include <linux/if_vlan.h> 24 #include <linux/if_macvlan.h> 25 #include <linux/if_bridge.h> 26 #include <linux/prefetch.h> 27 #include <linux/bpf.h> 28 #include <linux/bpf_trace.h> 29 #include <linux/atomic.h> 30 #include <linux/numa.h> 31 #include <generated/utsrelease.h> 32 #include <scsi/fc/fc_fcoe.h> 33 #include <net/udp_tunnel.h> 34 #include <net/pkt_cls.h> 35 #include <net/tc_act/tc_gact.h> 36 #include <net/tc_act/tc_mirred.h> 37 #include <net/vxlan.h> 38 #include <net/mpls.h> 39 #include <net/netdev_queues.h> 40 #include <net/xdp_sock_drv.h> 41 #include <net/xfrm.h> 42 43 #include "ixgbe.h" 44 #include "ixgbe_common.h" 45 #include "ixgbe_e610.h" 46 #include "ixgbe_dcb_82599.h" 47 #include "ixgbe_mbx.h" 48 #include "ixgbe_phy.h" 49 #include "ixgbe_sriov.h" 50 #include "ixgbe_model.h" 51 #include "ixgbe_txrx_common.h" 52 #include "devlink/devlink.h" 53 54 char ixgbe_driver_name[] = "ixgbe"; 55 static const char ixgbe_driver_string[] = 56 "Intel(R) 10 Gigabit PCI Express Network Driver"; 57 #ifdef IXGBE_FCOE 58 char ixgbe_default_device_descr[] = 59 "Intel(R) 10 Gigabit Network Connection"; 60 #else 61 static char ixgbe_default_device_descr[] = 62 "Intel(R) 10 Gigabit Network Connection"; 63 #endif 64 static const char ixgbe_copyright[] = 65 "Copyright (c) 1999-2016 Intel Corporation."; 66 67 static const char ixgbe_overheat_msg[] = "Network adapter has been stopped because it has over heated. Restart the computer. If the problem persists, power off the system and replace the adapter"; 68 69 static const struct ixgbe_info *ixgbe_info_tbl[] = { 70 [board_82598] = &ixgbe_82598_info, 71 [board_82599] = &ixgbe_82599_info, 72 [board_X540] = &ixgbe_X540_info, 73 [board_X550] = &ixgbe_X550_info, 74 [board_X550EM_x] = &ixgbe_X550EM_x_info, 75 [board_x550em_x_fw] = &ixgbe_x550em_x_fw_info, 76 [board_x550em_a] = &ixgbe_x550em_a_info, 77 [board_x550em_a_fw] = &ixgbe_x550em_a_fw_info, 78 [board_e610] = &ixgbe_e610_info, 79 }; 80 81 /* ixgbe_pci_tbl - PCI Device ID Table 82 * 83 * Wildcard entries (PCI_ANY_ID) should come last 84 * Last entry must be all 0s 85 * 86 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 87 * Class, Class Mask, private data (not used) } 88 */ 89 static const struct pci_device_id ixgbe_pci_tbl[] = { 90 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), board_82598 }, 91 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), board_82598 }, 92 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), board_82598 }, 93 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), board_82598 }, 94 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2), board_82598 }, 95 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), board_82598 }, 96 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), board_82598 }, 97 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), board_82598 }, 98 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), board_82598 }, 99 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), board_82598 }, 100 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), board_82598 }, 101 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), board_82598 }, 102 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), board_82599 }, 103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM), board_82599 }, 104 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR), board_82599 }, 105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), board_82599 }, 106 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM), board_82599 }, 107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ), board_82599 }, 108 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4), board_82599 }, 109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE), board_82599 }, 110 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE), board_82599 }, 111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM), board_82599 }, 112 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE), board_82599 }, 113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T), board_X540 }, 114 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2), board_82599 }, 115 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS), board_82599 }, 116 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_QSFP_SF_QP), board_82599 }, 117 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599EN_SFP), board_82599 }, 118 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF_QP), board_82599 }, 119 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T1), board_X540 }, 120 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T), board_X550}, 121 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T1), board_X550}, 122 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KX4), board_X550EM_x}, 123 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_XFI), board_X550EM_x}, 124 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KR), board_X550EM_x}, 125 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_10G_T), board_X550EM_x}, 126 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_SFP), board_X550EM_x}, 127 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_1G_T), board_x550em_x_fw}, 128 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR), board_x550em_a }, 129 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR_L), board_x550em_a }, 130 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP_N), board_x550em_a }, 131 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII), board_x550em_a }, 132 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII_L), board_x550em_a }, 133 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_10G_T), board_x550em_a}, 134 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP), board_x550em_a }, 135 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T), board_x550em_a_fw }, 136 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T_L), board_x550em_a_fw }, 137 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_BACKPLANE), board_e610}, 138 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_SFP), board_e610}, 139 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_10G_T), board_e610}, 140 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_2_5G_T), board_e610}, 141 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_SGMII), board_e610}, 142 /* required last entry */ 143 {0, } 144 }; 145 MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); 146 147 #ifdef CONFIG_IXGBE_DCA 148 static int ixgbe_notify_dca(struct notifier_block *, unsigned long event, 149 void *p); 150 static struct notifier_block dca_notifier = { 151 .notifier_call = ixgbe_notify_dca, 152 .next = NULL, 153 .priority = 0 154 }; 155 #endif 156 157 #ifdef CONFIG_PCI_IOV 158 static unsigned int max_vfs; 159 module_param(max_vfs, uint, 0); 160 MODULE_PARM_DESC(max_vfs, 161 "Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)"); 162 #endif /* CONFIG_PCI_IOV */ 163 164 static bool allow_unsupported_sfp; 165 module_param(allow_unsupported_sfp, bool, 0444); 166 MODULE_PARM_DESC(allow_unsupported_sfp, 167 "Allow unsupported and untested SFP+ modules on 82599-based adapters"); 168 169 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) 170 static int debug = -1; 171 module_param(debug, int, 0); 172 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); 173 174 MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); 175 MODULE_LICENSE("GPL v2"); 176 177 DEFINE_STATIC_KEY_FALSE(ixgbe_xdp_locking_key); 178 EXPORT_SYMBOL(ixgbe_xdp_locking_key); 179 180 static struct workqueue_struct *ixgbe_wq; 181 182 static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev); 183 static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *); 184 static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *); 185 static void ixgbe_watchdog_update_link(struct ixgbe_adapter *); 186 187 static const struct net_device_ops ixgbe_netdev_ops; 188 189 static bool netif_is_ixgbe(struct net_device *dev) 190 { 191 return dev && (dev->netdev_ops == &ixgbe_netdev_ops); 192 } 193 194 static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter, 195 u32 reg, u16 *value) 196 { 197 struct pci_dev *parent_dev; 198 struct pci_bus *parent_bus; 199 200 parent_bus = adapter->pdev->bus->parent; 201 if (!parent_bus) 202 return -1; 203 204 parent_dev = parent_bus->self; 205 if (!parent_dev) 206 return -1; 207 208 if (!pci_is_pcie(parent_dev)) 209 return -1; 210 211 pcie_capability_read_word(parent_dev, reg, value); 212 if (*value == IXGBE_FAILED_READ_CFG_WORD && 213 ixgbe_check_cfg_remove(&adapter->hw, parent_dev)) 214 return -1; 215 return 0; 216 } 217 218 static int ixgbe_get_parent_bus_info(struct ixgbe_adapter *adapter) 219 { 220 struct ixgbe_hw *hw = &adapter->hw; 221 u16 link_status = 0; 222 int err; 223 224 hw->bus.type = ixgbe_bus_type_pci_express; 225 226 /* Get the negotiated link width and speed from PCI config space of the 227 * parent, as this device is behind a switch 228 */ 229 err = ixgbe_read_pci_cfg_word_parent(adapter, 18, &link_status); 230 231 /* assume caller will handle error case */ 232 if (err) 233 return err; 234 235 hw->bus.width = ixgbe_convert_bus_width(link_status); 236 hw->bus.speed = ixgbe_convert_bus_speed(link_status); 237 238 return 0; 239 } 240 241 /** 242 * ixgbe_pcie_from_parent - Determine whether PCIe info should come from parent 243 * @hw: hw specific details 244 * 245 * This function is used by probe to determine whether a device's PCI-Express 246 * bandwidth details should be gathered from the parent bus instead of from the 247 * device. Used to ensure that various locations all have the correct device ID 248 * checks. 249 * 250 * Return: true if information should be collected from the parent bus, false 251 * otherwise 252 */ 253 static bool ixgbe_pcie_from_parent(struct ixgbe_hw *hw) 254 { 255 switch (hw->device_id) { 256 case IXGBE_DEV_ID_82599_SFP_SF_QP: 257 case IXGBE_DEV_ID_82599_QSFP_SF_QP: 258 return true; 259 default: 260 return false; 261 } 262 } 263 264 static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter, 265 int expected_gts) 266 { 267 struct ixgbe_hw *hw = &adapter->hw; 268 struct pci_dev *pdev; 269 270 /* Some devices are not connected over PCIe and thus do not negotiate 271 * speed. These devices do not have valid bus info, and thus any report 272 * we generate may not be correct. 273 */ 274 if (hw->bus.type == ixgbe_bus_type_internal) 275 return; 276 277 /* determine whether to use the parent device */ 278 if (ixgbe_pcie_from_parent(&adapter->hw)) 279 pdev = adapter->pdev->bus->parent->self; 280 else 281 pdev = adapter->pdev; 282 283 pcie_print_link_status(pdev); 284 } 285 286 static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter) 287 { 288 if (!test_bit(__IXGBE_DOWN, &adapter->state) && 289 !test_bit(__IXGBE_REMOVING, &adapter->state) && 290 !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state)) 291 queue_work(ixgbe_wq, &adapter->service_task); 292 } 293 294 static void ixgbe_remove_adapter(struct ixgbe_hw *hw) 295 { 296 struct ixgbe_adapter *adapter = hw->back; 297 298 if (!hw->hw_addr) 299 return; 300 hw->hw_addr = NULL; 301 e_dev_err("Adapter removed\n"); 302 if (test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) 303 ixgbe_service_event_schedule(adapter); 304 } 305 306 static u32 ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg) 307 { 308 u8 __iomem *reg_addr; 309 u32 value; 310 int i; 311 312 reg_addr = READ_ONCE(hw->hw_addr); 313 if (ixgbe_removed(reg_addr)) 314 return IXGBE_FAILED_READ_REG; 315 316 /* Register read of 0xFFFFFFF can indicate the adapter has been removed, 317 * so perform several status register reads to determine if the adapter 318 * has been removed. 319 */ 320 for (i = 0; i < IXGBE_FAILED_READ_RETRIES; i++) { 321 value = readl(reg_addr + IXGBE_STATUS); 322 if (value != IXGBE_FAILED_READ_REG) 323 break; 324 mdelay(3); 325 } 326 327 if (value == IXGBE_FAILED_READ_REG) 328 ixgbe_remove_adapter(hw); 329 else 330 value = readl(reg_addr + reg); 331 return value; 332 } 333 334 /** 335 * ixgbe_read_reg - Read from device register 336 * @hw: hw specific details 337 * @reg: offset of register to read 338 * 339 * Returns : value read or IXGBE_FAILED_READ_REG if removed 340 * 341 * This function is used to read device registers. It checks for device 342 * removal by confirming any read that returns all ones by checking the 343 * status register value for all ones. This function avoids reading from 344 * the hardware if a removal was previously detected in which case it 345 * returns IXGBE_FAILED_READ_REG (all ones). 346 */ 347 u32 ixgbe_read_reg(struct ixgbe_hw *hw, u32 reg) 348 { 349 u8 __iomem *reg_addr = READ_ONCE(hw->hw_addr); 350 u32 value; 351 352 if (ixgbe_removed(reg_addr)) 353 return IXGBE_FAILED_READ_REG; 354 if (unlikely(hw->phy.nw_mng_if_sel & 355 IXGBE_NW_MNG_IF_SEL_SGMII_ENABLE)) { 356 struct ixgbe_adapter *adapter; 357 int i; 358 359 for (i = 0; i < 200; ++i) { 360 value = readl(reg_addr + IXGBE_MAC_SGMII_BUSY); 361 if (likely(!value)) 362 goto writes_completed; 363 if (value == IXGBE_FAILED_READ_REG) { 364 ixgbe_remove_adapter(hw); 365 return IXGBE_FAILED_READ_REG; 366 } 367 udelay(5); 368 } 369 370 adapter = hw->back; 371 e_warn(hw, "register writes incomplete %08x\n", value); 372 } 373 374 writes_completed: 375 value = readl(reg_addr + reg); 376 if (unlikely(value == IXGBE_FAILED_READ_REG)) 377 value = ixgbe_check_remove(hw, reg); 378 return value; 379 } 380 381 static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev) 382 { 383 u16 value; 384 385 pci_read_config_word(pdev, PCI_VENDOR_ID, &value); 386 if (value == IXGBE_FAILED_READ_CFG_WORD) { 387 ixgbe_remove_adapter(hw); 388 return true; 389 } 390 return false; 391 } 392 393 u16 ixgbe_read_pci_cfg_word(struct ixgbe_hw *hw, u32 reg) 394 { 395 struct ixgbe_adapter *adapter = hw->back; 396 u16 value; 397 398 if (ixgbe_removed(hw->hw_addr)) 399 return IXGBE_FAILED_READ_CFG_WORD; 400 pci_read_config_word(adapter->pdev, reg, &value); 401 if (value == IXGBE_FAILED_READ_CFG_WORD && 402 ixgbe_check_cfg_remove(hw, adapter->pdev)) 403 return IXGBE_FAILED_READ_CFG_WORD; 404 return value; 405 } 406 407 #ifdef CONFIG_PCI_IOV 408 static u32 ixgbe_read_pci_cfg_dword(struct ixgbe_hw *hw, u32 reg) 409 { 410 struct ixgbe_adapter *adapter = hw->back; 411 u32 value; 412 413 if (ixgbe_removed(hw->hw_addr)) 414 return IXGBE_FAILED_READ_CFG_DWORD; 415 pci_read_config_dword(adapter->pdev, reg, &value); 416 if (value == IXGBE_FAILED_READ_CFG_DWORD && 417 ixgbe_check_cfg_remove(hw, adapter->pdev)) 418 return IXGBE_FAILED_READ_CFG_DWORD; 419 return value; 420 } 421 #endif /* CONFIG_PCI_IOV */ 422 423 void ixgbe_write_pci_cfg_word(struct ixgbe_hw *hw, u32 reg, u16 value) 424 { 425 struct ixgbe_adapter *adapter = hw->back; 426 427 if (ixgbe_removed(hw->hw_addr)) 428 return; 429 pci_write_config_word(adapter->pdev, reg, value); 430 } 431 432 static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter) 433 { 434 BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state)); 435 436 /* flush memory to make sure state is correct before next watchdog */ 437 smp_mb__before_atomic(); 438 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 439 } 440 441 struct ixgbe_reg_info { 442 u32 ofs; 443 char *name; 444 }; 445 446 static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = { 447 448 /* General Registers */ 449 {IXGBE_CTRL, "CTRL"}, 450 {IXGBE_STATUS, "STATUS"}, 451 {IXGBE_CTRL_EXT, "CTRL_EXT"}, 452 453 /* Interrupt Registers */ 454 {IXGBE_EICR, "EICR"}, 455 456 /* RX Registers */ 457 {IXGBE_SRRCTL(0), "SRRCTL"}, 458 {IXGBE_DCA_RXCTRL(0), "DRXCTL"}, 459 {IXGBE_RDLEN(0), "RDLEN"}, 460 {IXGBE_RDH(0), "RDH"}, 461 {IXGBE_RDT(0), "RDT"}, 462 {IXGBE_RXDCTL(0), "RXDCTL"}, 463 {IXGBE_RDBAL(0), "RDBAL"}, 464 {IXGBE_RDBAH(0), "RDBAH"}, 465 466 /* TX Registers */ 467 {IXGBE_TDBAL(0), "TDBAL"}, 468 {IXGBE_TDBAH(0), "TDBAH"}, 469 {IXGBE_TDLEN(0), "TDLEN"}, 470 {IXGBE_TDH(0), "TDH"}, 471 {IXGBE_TDT(0), "TDT"}, 472 {IXGBE_TXDCTL(0), "TXDCTL"}, 473 474 /* List Terminator */ 475 { .name = NULL } 476 }; 477 478 479 /* 480 * ixgbe_regdump - register printout routine 481 */ 482 static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo) 483 { 484 int i; 485 char rname[16]; 486 u32 regs[64]; 487 488 switch (reginfo->ofs) { 489 case IXGBE_SRRCTL(0): 490 for (i = 0; i < 64; i++) 491 regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i)); 492 break; 493 case IXGBE_DCA_RXCTRL(0): 494 for (i = 0; i < 64; i++) 495 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i)); 496 break; 497 case IXGBE_RDLEN(0): 498 for (i = 0; i < 64; i++) 499 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i)); 500 break; 501 case IXGBE_RDH(0): 502 for (i = 0; i < 64; i++) 503 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i)); 504 break; 505 case IXGBE_RDT(0): 506 for (i = 0; i < 64; i++) 507 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i)); 508 break; 509 case IXGBE_RXDCTL(0): 510 for (i = 0; i < 64; i++) 511 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); 512 break; 513 case IXGBE_RDBAL(0): 514 for (i = 0; i < 64; i++) 515 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i)); 516 break; 517 case IXGBE_RDBAH(0): 518 for (i = 0; i < 64; i++) 519 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i)); 520 break; 521 case IXGBE_TDBAL(0): 522 for (i = 0; i < 64; i++) 523 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i)); 524 break; 525 case IXGBE_TDBAH(0): 526 for (i = 0; i < 64; i++) 527 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i)); 528 break; 529 case IXGBE_TDLEN(0): 530 for (i = 0; i < 64; i++) 531 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i)); 532 break; 533 case IXGBE_TDH(0): 534 for (i = 0; i < 64; i++) 535 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i)); 536 break; 537 case IXGBE_TDT(0): 538 for (i = 0; i < 64; i++) 539 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i)); 540 break; 541 case IXGBE_TXDCTL(0): 542 for (i = 0; i < 64; i++) 543 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i)); 544 break; 545 default: 546 pr_info("%-15s %08x\n", 547 reginfo->name, IXGBE_READ_REG(hw, reginfo->ofs)); 548 return; 549 } 550 551 i = 0; 552 while (i < 64) { 553 int j; 554 char buf[9 * 8 + 1]; 555 char *p = buf; 556 557 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i, i + 7); 558 for (j = 0; j < 8; j++) 559 p += sprintf(p, " %08x", regs[i++]); 560 pr_err("%-15s%s\n", rname, buf); 561 } 562 563 } 564 565 static void ixgbe_print_buffer(struct ixgbe_ring *ring, int n) 566 { 567 struct ixgbe_tx_buffer *tx_buffer; 568 569 tx_buffer = &ring->tx_buffer_info[ring->next_to_clean]; 570 pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n", 571 n, ring->next_to_use, ring->next_to_clean, 572 (u64)dma_unmap_addr(tx_buffer, dma), 573 dma_unmap_len(tx_buffer, len), 574 tx_buffer->next_to_watch, 575 (u64)tx_buffer->time_stamp); 576 } 577 578 /* 579 * ixgbe_dump - Print registers, tx-rings and rx-rings 580 */ 581 static void ixgbe_dump(struct ixgbe_adapter *adapter) 582 { 583 struct net_device *netdev = adapter->netdev; 584 struct ixgbe_hw *hw = &adapter->hw; 585 struct ixgbe_reg_info *reginfo; 586 int n = 0; 587 struct ixgbe_ring *ring; 588 struct ixgbe_tx_buffer *tx_buffer; 589 union ixgbe_adv_tx_desc *tx_desc; 590 struct my_u0 { u64 a; u64 b; } *u0; 591 struct ixgbe_ring *rx_ring; 592 union ixgbe_adv_rx_desc *rx_desc; 593 struct ixgbe_rx_buffer *rx_buffer_info; 594 int i = 0; 595 596 if (!netif_msg_hw(adapter)) 597 return; 598 599 /* Print netdevice Info */ 600 if (netdev) { 601 dev_info(&adapter->pdev->dev, "Net device Info\n"); 602 pr_info("Device Name state " 603 "trans_start\n"); 604 pr_info("%-15s %016lX %016lX\n", 605 netdev->name, 606 netdev->state, 607 dev_trans_start(netdev)); 608 } 609 610 /* Print Registers */ 611 dev_info(&adapter->pdev->dev, "Register Dump\n"); 612 pr_info(" Register Name Value\n"); 613 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl; 614 reginfo->name; reginfo++) { 615 ixgbe_regdump(hw, reginfo); 616 } 617 618 /* Print TX Ring Summary */ 619 if (!netdev || !netif_running(netdev)) 620 return; 621 622 dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); 623 pr_info(" %s %s %s %s\n", 624 "Queue [NTU] [NTC] [bi(ntc)->dma ]", 625 "leng", "ntw", "timestamp"); 626 for (n = 0; n < adapter->num_tx_queues; n++) { 627 ring = adapter->tx_ring[n]; 628 ixgbe_print_buffer(ring, n); 629 } 630 631 for (n = 0; n < adapter->num_xdp_queues; n++) { 632 ring = adapter->xdp_ring[n]; 633 ixgbe_print_buffer(ring, n); 634 } 635 636 /* Print TX Rings */ 637 if (!netif_msg_tx_done(adapter)) 638 goto rx_ring_summary; 639 640 dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); 641 642 /* Transmit Descriptor Formats 643 * 644 * 82598 Advanced Transmit Descriptor 645 * +--------------------------------------------------------------+ 646 * 0 | Buffer Address [63:0] | 647 * +--------------------------------------------------------------+ 648 * 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN | 649 * +--------------------------------------------------------------+ 650 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0 651 * 652 * 82598 Advanced Transmit Descriptor (Write-Back Format) 653 * +--------------------------------------------------------------+ 654 * 0 | RSV [63:0] | 655 * +--------------------------------------------------------------+ 656 * 8 | RSV | STA | NXTSEQ | 657 * +--------------------------------------------------------------+ 658 * 63 36 35 32 31 0 659 * 660 * 82599+ Advanced Transmit Descriptor 661 * +--------------------------------------------------------------+ 662 * 0 | Buffer Address [63:0] | 663 * +--------------------------------------------------------------+ 664 * 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN | 665 * +--------------------------------------------------------------+ 666 * 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0 667 * 668 * 82599+ Advanced Transmit Descriptor (Write-Back Format) 669 * +--------------------------------------------------------------+ 670 * 0 | RSV [63:0] | 671 * +--------------------------------------------------------------+ 672 * 8 | RSV | STA | RSV | 673 * +--------------------------------------------------------------+ 674 * 63 36 35 32 31 0 675 */ 676 677 for (n = 0; n < adapter->num_tx_queues; n++) { 678 ring = adapter->tx_ring[n]; 679 pr_info("------------------------------------\n"); 680 pr_info("TX QUEUE INDEX = %d\n", ring->queue_index); 681 pr_info("------------------------------------\n"); 682 pr_info("%s%s %s %s %s %s\n", 683 "T [desc] [address 63:0 ] ", 684 "[PlPOIdStDDt Ln] [bi->dma ] ", 685 "leng", "ntw", "timestamp", "bi->skb"); 686 687 for (i = 0; ring->desc && (i < ring->count); i++) { 688 tx_desc = IXGBE_TX_DESC(ring, i); 689 tx_buffer = &ring->tx_buffer_info[i]; 690 u0 = (struct my_u0 *)tx_desc; 691 if (dma_unmap_len(tx_buffer, len) > 0) { 692 const char *ring_desc; 693 694 if (i == ring->next_to_use && 695 i == ring->next_to_clean) 696 ring_desc = " NTC/U"; 697 else if (i == ring->next_to_use) 698 ring_desc = " NTU"; 699 else if (i == ring->next_to_clean) 700 ring_desc = " NTC"; 701 else 702 ring_desc = ""; 703 pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p%s", 704 i, 705 le64_to_cpu((__force __le64)u0->a), 706 le64_to_cpu((__force __le64)u0->b), 707 (u64)dma_unmap_addr(tx_buffer, dma), 708 dma_unmap_len(tx_buffer, len), 709 tx_buffer->next_to_watch, 710 (u64)tx_buffer->time_stamp, 711 tx_buffer->skb, 712 ring_desc); 713 714 if (netif_msg_pktdata(adapter) && 715 tx_buffer->skb) 716 print_hex_dump(KERN_INFO, "", 717 DUMP_PREFIX_ADDRESS, 16, 1, 718 tx_buffer->skb->data, 719 dma_unmap_len(tx_buffer, len), 720 true); 721 } 722 } 723 } 724 725 /* Print RX Rings Summary */ 726 rx_ring_summary: 727 dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); 728 pr_info("Queue [NTU] [NTC]\n"); 729 for (n = 0; n < adapter->num_rx_queues; n++) { 730 rx_ring = adapter->rx_ring[n]; 731 pr_info("%5d %5X %5X\n", 732 n, rx_ring->next_to_use, rx_ring->next_to_clean); 733 } 734 735 /* Print RX Rings */ 736 if (!netif_msg_rx_status(adapter)) 737 return; 738 739 dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); 740 741 /* Receive Descriptor Formats 742 * 743 * 82598 Advanced Receive Descriptor (Read) Format 744 * 63 1 0 745 * +-----------------------------------------------------+ 746 * 0 | Packet Buffer Address [63:1] |A0/NSE| 747 * +----------------------------------------------+------+ 748 * 8 | Header Buffer Address [63:1] | DD | 749 * +-----------------------------------------------------+ 750 * 751 * 752 * 82598 Advanced Receive Descriptor (Write-Back) Format 753 * 754 * 63 48 47 32 31 30 21 20 16 15 4 3 0 755 * +------------------------------------------------------+ 756 * 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS | 757 * | Packet | IP | | | | Type | Type | 758 * | Checksum | Ident | | | | | | 759 * +------------------------------------------------------+ 760 * 8 | VLAN Tag | Length | Extended Error | Extended Status | 761 * +------------------------------------------------------+ 762 * 63 48 47 32 31 20 19 0 763 * 764 * 82599+ Advanced Receive Descriptor (Read) Format 765 * 63 1 0 766 * +-----------------------------------------------------+ 767 * 0 | Packet Buffer Address [63:1] |A0/NSE| 768 * +----------------------------------------------+------+ 769 * 8 | Header Buffer Address [63:1] | DD | 770 * +-----------------------------------------------------+ 771 * 772 * 773 * 82599+ Advanced Receive Descriptor (Write-Back) Format 774 * 775 * 63 48 47 32 31 30 21 20 17 16 4 3 0 776 * +------------------------------------------------------+ 777 * 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS | 778 * |/ RTT / PCoE_PARAM | | | CNT | Type | Type | 779 * |/ Flow Dir Flt ID | | | | | | 780 * +------------------------------------------------------+ 781 * 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP | 782 * +------------------------------------------------------+ 783 * 63 48 47 32 31 20 19 0 784 */ 785 786 for (n = 0; n < adapter->num_rx_queues; n++) { 787 rx_ring = adapter->rx_ring[n]; 788 pr_info("------------------------------------\n"); 789 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index); 790 pr_info("------------------------------------\n"); 791 pr_info("%s%s%s\n", 792 "R [desc] [ PktBuf A0] ", 793 "[ HeadBuf DD] [bi->dma ] [bi->skb ] ", 794 "<-- Adv Rx Read format"); 795 pr_info("%s%s%s\n", 796 "RWB[desc] [PcsmIpSHl PtRs] ", 797 "[vl er S cks ln] ---------------- [bi->skb ] ", 798 "<-- Adv Rx Write-Back format"); 799 800 for (i = 0; i < rx_ring->count; i++) { 801 const char *ring_desc; 802 803 if (i == rx_ring->next_to_use) 804 ring_desc = " NTU"; 805 else if (i == rx_ring->next_to_clean) 806 ring_desc = " NTC"; 807 else 808 ring_desc = ""; 809 810 rx_buffer_info = &rx_ring->rx_buffer_info[i]; 811 rx_desc = IXGBE_RX_DESC(rx_ring, i); 812 u0 = (struct my_u0 *)rx_desc; 813 if (rx_desc->wb.upper.length) { 814 /* Descriptor Done */ 815 pr_info("RWB[0x%03X] %016llX %016llX ---------------- %p%s\n", 816 i, 817 le64_to_cpu((__force __le64)u0->a), 818 le64_to_cpu((__force __le64)u0->b), 819 rx_buffer_info->skb, 820 ring_desc); 821 } else { 822 pr_info("R [0x%03X] %016llX %016llX %016llX %p%s\n", 823 i, 824 le64_to_cpu((__force __le64)u0->a), 825 le64_to_cpu((__force __le64)u0->b), 826 (u64)rx_buffer_info->dma, 827 rx_buffer_info->skb, 828 ring_desc); 829 830 if (netif_msg_pktdata(adapter) && 831 rx_buffer_info->dma) { 832 print_hex_dump(KERN_INFO, "", 833 DUMP_PREFIX_ADDRESS, 16, 1, 834 page_address(rx_buffer_info->page) + 835 rx_buffer_info->page_offset, 836 ixgbe_rx_bufsz(rx_ring), true); 837 } 838 } 839 } 840 } 841 } 842 843 static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) 844 { 845 u32 ctrl_ext; 846 847 /* Let firmware take over control of h/w */ 848 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); 849 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, 850 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); 851 } 852 853 static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) 854 { 855 u32 ctrl_ext; 856 857 /* Let firmware know the driver has taken over */ 858 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); 859 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, 860 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); 861 } 862 863 /** 864 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors 865 * @adapter: pointer to adapter struct 866 * @direction: 0 for Rx, 1 for Tx, -1 for other causes 867 * @queue: queue to map the corresponding interrupt to 868 * @msix_vector: the vector to map to the corresponding queue 869 * 870 */ 871 static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction, 872 u8 queue, u8 msix_vector) 873 { 874 u32 ivar, index; 875 struct ixgbe_hw *hw = &adapter->hw; 876 switch (hw->mac.type) { 877 case ixgbe_mac_82598EB: 878 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 879 if (direction == -1) 880 direction = 0; 881 index = (((direction * 64) + queue) >> 2) & 0x1F; 882 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index)); 883 ivar &= ~(0xFF << (8 * (queue & 0x3))); 884 ivar |= (msix_vector << (8 * (queue & 0x3))); 885 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar); 886 break; 887 case ixgbe_mac_82599EB: 888 case ixgbe_mac_X540: 889 case ixgbe_mac_X550: 890 case ixgbe_mac_X550EM_x: 891 case ixgbe_mac_x550em_a: 892 case ixgbe_mac_e610: 893 if (direction == -1) { 894 /* other causes */ 895 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 896 index = ((queue & 1) * 8); 897 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC); 898 ivar &= ~(0xFF << index); 899 ivar |= (msix_vector << index); 900 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar); 901 break; 902 } else { 903 /* tx or rx causes */ 904 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 905 index = ((16 * (queue & 1)) + (8 * direction)); 906 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1)); 907 ivar &= ~(0xFF << index); 908 ivar |= (msix_vector << index); 909 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar); 910 break; 911 } 912 default: 913 break; 914 } 915 } 916 917 void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter, 918 u64 qmask) 919 { 920 u32 mask; 921 922 switch (adapter->hw.mac.type) { 923 case ixgbe_mac_82598EB: 924 mask = (IXGBE_EIMS_RTX_QUEUE & qmask); 925 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask); 926 break; 927 case ixgbe_mac_82599EB: 928 case ixgbe_mac_X540: 929 case ixgbe_mac_X550: 930 case ixgbe_mac_X550EM_x: 931 case ixgbe_mac_x550em_a: 932 case ixgbe_mac_e610: 933 mask = (qmask & 0xFFFFFFFF); 934 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask); 935 mask = (qmask >> 32); 936 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask); 937 break; 938 default: 939 break; 940 } 941 } 942 943 static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter *adapter) 944 { 945 struct ixgbe_hw *hw = &adapter->hw; 946 struct ixgbe_hw_stats *hwstats = &adapter->stats; 947 int i; 948 u32 data; 949 950 if ((hw->fc.current_mode != ixgbe_fc_full) && 951 (hw->fc.current_mode != ixgbe_fc_rx_pause)) 952 return; 953 954 switch (hw->mac.type) { 955 case ixgbe_mac_82598EB: 956 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); 957 break; 958 default: 959 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); 960 } 961 hwstats->lxoffrxc += data; 962 963 /* refill credits (no tx hang) if we received xoff */ 964 if (!data) 965 return; 966 967 for (i = 0; i < adapter->num_tx_queues; i++) 968 clear_bit(__IXGBE_HANG_CHECK_ARMED, 969 &adapter->tx_ring[i]->state); 970 971 for (i = 0; i < adapter->num_xdp_queues; i++) 972 clear_bit(__IXGBE_HANG_CHECK_ARMED, 973 &adapter->xdp_ring[i]->state); 974 } 975 976 static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter) 977 { 978 struct ixgbe_hw *hw = &adapter->hw; 979 struct ixgbe_hw_stats *hwstats = &adapter->stats; 980 u32 xoff[8] = {0}; 981 u8 tc; 982 int i; 983 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 984 985 if (adapter->ixgbe_ieee_pfc) 986 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 987 988 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED) || !pfc_en) { 989 ixgbe_update_xoff_rx_lfc(adapter); 990 return; 991 } 992 993 /* update stats for each tc, only valid with PFC enabled */ 994 for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) { 995 u32 pxoffrxc; 996 997 switch (hw->mac.type) { 998 case ixgbe_mac_82598EB: 999 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); 1000 break; 1001 default: 1002 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i)); 1003 } 1004 hwstats->pxoffrxc[i] += pxoffrxc; 1005 /* Get the TC for given UP */ 1006 tc = netdev_get_prio_tc_map(adapter->netdev, i); 1007 xoff[tc] += pxoffrxc; 1008 } 1009 1010 /* disarm tx queues that have received xoff frames */ 1011 for (i = 0; i < adapter->num_tx_queues; i++) { 1012 struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; 1013 1014 tc = tx_ring->dcb_tc; 1015 if (xoff[tc]) 1016 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); 1017 } 1018 1019 for (i = 0; i < adapter->num_xdp_queues; i++) { 1020 struct ixgbe_ring *xdp_ring = adapter->xdp_ring[i]; 1021 1022 tc = xdp_ring->dcb_tc; 1023 if (xoff[tc]) 1024 clear_bit(__IXGBE_HANG_CHECK_ARMED, &xdp_ring->state); 1025 } 1026 } 1027 1028 static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring) 1029 { 1030 return ring->stats.packets; 1031 } 1032 1033 static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring) 1034 { 1035 unsigned int head, tail; 1036 1037 head = ring->next_to_clean; 1038 tail = ring->next_to_use; 1039 1040 return ((head <= tail) ? tail : tail + ring->count) - head; 1041 } 1042 1043 static bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring) 1044 { 1045 u32 tx_done = ixgbe_get_tx_completed(tx_ring); 1046 u32 tx_done_old = tx_ring->tx_stats.tx_done_old; 1047 u32 tx_pending = ixgbe_get_tx_pending(tx_ring); 1048 1049 clear_check_for_tx_hang(tx_ring); 1050 1051 /* 1052 * Check for a hung queue, but be thorough. This verifies 1053 * that a transmit has been completed since the previous 1054 * check AND there is at least one packet pending. The 1055 * ARMED bit is set to indicate a potential hang. The 1056 * bit is cleared if a pause frame is received to remove 1057 * false hang detection due to PFC or 802.3x frames. By 1058 * requiring this to fail twice we avoid races with 1059 * pfc clearing the ARMED bit and conditions where we 1060 * run the check_tx_hang logic with a transmit completion 1061 * pending but without time to complete it yet. 1062 */ 1063 if (tx_done_old == tx_done && tx_pending) 1064 /* make sure it is true for two checks in a row */ 1065 return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED, 1066 &tx_ring->state); 1067 /* update completed stats and continue */ 1068 tx_ring->tx_stats.tx_done_old = tx_done; 1069 /* reset the countdown */ 1070 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); 1071 1072 return false; 1073 } 1074 1075 /** 1076 * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout 1077 * @adapter: driver private struct 1078 **/ 1079 static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter) 1080 { 1081 1082 /* Do the reset outside of interrupt context */ 1083 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 1084 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 1085 e_warn(drv, "initiating reset due to tx timeout\n"); 1086 ixgbe_service_event_schedule(adapter); 1087 } 1088 } 1089 1090 /** 1091 * ixgbe_tx_maxrate - callback to set the maximum per-queue bitrate 1092 * @netdev: network interface device structure 1093 * @queue_index: Tx queue to set 1094 * @maxrate: desired maximum transmit bitrate 1095 **/ 1096 static int ixgbe_tx_maxrate(struct net_device *netdev, 1097 int queue_index, u32 maxrate) 1098 { 1099 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 1100 struct ixgbe_hw *hw = &adapter->hw; 1101 u32 bcnrc_val = ixgbe_link_mbps(adapter); 1102 1103 if (!maxrate) 1104 return 0; 1105 1106 /* Calculate the rate factor values to set */ 1107 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1108 bcnrc_val /= maxrate; 1109 1110 /* clear everything but the rate factor */ 1111 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1112 IXGBE_RTTBCNRC_RF_DEC_MASK; 1113 1114 /* enable the rate scheduler */ 1115 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1116 1117 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, queue_index); 1118 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1119 1120 return 0; 1121 } 1122 1123 /** 1124 * ixgbe_update_tx_ring_stats - Update Tx ring specific counters 1125 * @tx_ring: ring to update 1126 * @q_vector: queue vector ring belongs to 1127 * @pkts: number of processed packets 1128 * @bytes: number of processed bytes 1129 */ 1130 void ixgbe_update_tx_ring_stats(struct ixgbe_ring *tx_ring, 1131 struct ixgbe_q_vector *q_vector, u64 pkts, 1132 u64 bytes) 1133 { 1134 u64_stats_update_begin(&tx_ring->syncp); 1135 tx_ring->stats.bytes += bytes; 1136 tx_ring->stats.packets += pkts; 1137 u64_stats_update_end(&tx_ring->syncp); 1138 q_vector->tx.total_bytes += bytes; 1139 q_vector->tx.total_packets += pkts; 1140 } 1141 1142 /** 1143 * ixgbe_update_rx_ring_stats - Update Rx ring specific counters 1144 * @rx_ring: ring to update 1145 * @q_vector: queue vector ring belongs to 1146 * @pkts: number of processed packets 1147 * @bytes: number of processed bytes 1148 */ 1149 void ixgbe_update_rx_ring_stats(struct ixgbe_ring *rx_ring, 1150 struct ixgbe_q_vector *q_vector, u64 pkts, 1151 u64 bytes) 1152 { 1153 u64_stats_update_begin(&rx_ring->syncp); 1154 rx_ring->stats.bytes += bytes; 1155 rx_ring->stats.packets += pkts; 1156 u64_stats_update_end(&rx_ring->syncp); 1157 q_vector->rx.total_bytes += bytes; 1158 q_vector->rx.total_packets += pkts; 1159 } 1160 1161 /** 1162 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes 1163 * @q_vector: structure containing interrupt and ring information 1164 * @tx_ring: tx ring to clean 1165 * @napi_budget: Used to determine if we are in netpoll 1166 **/ 1167 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector, 1168 struct ixgbe_ring *tx_ring, int napi_budget) 1169 { 1170 struct ixgbe_adapter *adapter = q_vector->adapter; 1171 struct ixgbe_tx_buffer *tx_buffer; 1172 union ixgbe_adv_tx_desc *tx_desc; 1173 unsigned int total_bytes = 0, total_packets = 0, total_ipsec = 0; 1174 unsigned int budget = q_vector->tx.work_limit; 1175 unsigned int i = tx_ring->next_to_clean; 1176 struct netdev_queue *txq; 1177 1178 if (test_bit(__IXGBE_DOWN, &adapter->state)) 1179 return true; 1180 1181 tx_buffer = &tx_ring->tx_buffer_info[i]; 1182 tx_desc = IXGBE_TX_DESC(tx_ring, i); 1183 i -= tx_ring->count; 1184 1185 do { 1186 union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; 1187 1188 /* if next_to_watch is not set then there is no work pending */ 1189 if (!eop_desc) 1190 break; 1191 1192 /* prevent any other reads prior to eop_desc */ 1193 smp_rmb(); 1194 1195 /* if DD is not set pending work has not been completed */ 1196 if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD))) 1197 break; 1198 1199 /* clear next_to_watch to prevent false hangs */ 1200 tx_buffer->next_to_watch = NULL; 1201 1202 /* update the statistics for this packet */ 1203 total_bytes += tx_buffer->bytecount; 1204 total_packets += tx_buffer->gso_segs; 1205 if (tx_buffer->tx_flags & IXGBE_TX_FLAGS_IPSEC) 1206 total_ipsec++; 1207 1208 /* free the skb */ 1209 if (ring_is_xdp(tx_ring)) 1210 xdp_return_frame(tx_buffer->xdpf); 1211 else 1212 napi_consume_skb(tx_buffer->skb, napi_budget); 1213 1214 /* unmap skb header data */ 1215 dma_unmap_single(tx_ring->dev, 1216 dma_unmap_addr(tx_buffer, dma), 1217 dma_unmap_len(tx_buffer, len), 1218 DMA_TO_DEVICE); 1219 1220 /* clear tx_buffer data */ 1221 dma_unmap_len_set(tx_buffer, len, 0); 1222 1223 /* unmap remaining buffers */ 1224 while (tx_desc != eop_desc) { 1225 tx_buffer++; 1226 tx_desc++; 1227 i++; 1228 if (unlikely(!i)) { 1229 i -= tx_ring->count; 1230 tx_buffer = tx_ring->tx_buffer_info; 1231 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 1232 } 1233 1234 /* unmap any remaining paged data */ 1235 if (dma_unmap_len(tx_buffer, len)) { 1236 dma_unmap_page(tx_ring->dev, 1237 dma_unmap_addr(tx_buffer, dma), 1238 dma_unmap_len(tx_buffer, len), 1239 DMA_TO_DEVICE); 1240 dma_unmap_len_set(tx_buffer, len, 0); 1241 } 1242 } 1243 1244 /* move us one more past the eop_desc for start of next pkt */ 1245 tx_buffer++; 1246 tx_desc++; 1247 i++; 1248 if (unlikely(!i)) { 1249 i -= tx_ring->count; 1250 tx_buffer = tx_ring->tx_buffer_info; 1251 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 1252 } 1253 1254 /* issue prefetch for next Tx descriptor */ 1255 prefetch(tx_desc); 1256 1257 /* update budget accounting */ 1258 budget--; 1259 } while (likely(budget)); 1260 1261 i += tx_ring->count; 1262 tx_ring->next_to_clean = i; 1263 ixgbe_update_tx_ring_stats(tx_ring, q_vector, total_packets, 1264 total_bytes); 1265 adapter->tx_ipsec += total_ipsec; 1266 1267 if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) { 1268 /* schedule immediate reset if we believe we hung */ 1269 struct ixgbe_hw *hw = &adapter->hw; 1270 e_err(drv, "Detected Tx Unit Hang %s\n" 1271 " Tx Queue <%d>\n" 1272 " TDH, TDT <%x>, <%x>\n" 1273 " next_to_use <%x>\n" 1274 " next_to_clean <%x>\n" 1275 "tx_buffer_info[next_to_clean]\n" 1276 " time_stamp <%lx>\n" 1277 " jiffies <%lx>\n", 1278 ring_is_xdp(tx_ring) ? "(XDP)" : "", 1279 tx_ring->queue_index, 1280 IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)), 1281 IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)), 1282 tx_ring->next_to_use, i, 1283 tx_ring->tx_buffer_info[i].time_stamp, jiffies); 1284 1285 if (!ring_is_xdp(tx_ring)) 1286 netif_stop_subqueue(tx_ring->netdev, 1287 tx_ring->queue_index); 1288 1289 e_info(probe, 1290 "tx hang %d detected on queue %d, resetting adapter\n", 1291 adapter->tx_timeout_count + 1, tx_ring->queue_index); 1292 1293 /* schedule immediate reset if we believe we hung */ 1294 ixgbe_tx_timeout_reset(adapter); 1295 1296 /* the adapter is about to reset, no point in enabling stuff */ 1297 return true; 1298 } 1299 1300 if (ring_is_xdp(tx_ring)) 1301 return !!budget; 1302 1303 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) 1304 txq = netdev_get_tx_queue(tx_ring->netdev, tx_ring->queue_index); 1305 if (!__netif_txq_completed_wake(txq, total_packets, total_bytes, 1306 ixgbe_desc_unused(tx_ring), 1307 TX_WAKE_THRESHOLD, 1308 !netif_carrier_ok(tx_ring->netdev) || 1309 test_bit(__IXGBE_DOWN, &adapter->state))) 1310 ++tx_ring->tx_stats.restart_queue; 1311 1312 return !!budget; 1313 } 1314 1315 #ifdef CONFIG_IXGBE_DCA 1316 static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, 1317 struct ixgbe_ring *tx_ring, 1318 int cpu) 1319 { 1320 struct ixgbe_hw *hw = &adapter->hw; 1321 u32 txctrl = 0; 1322 u16 reg_offset; 1323 1324 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1325 txctrl = dca3_get_tag(tx_ring->dev, cpu); 1326 1327 switch (hw->mac.type) { 1328 case ixgbe_mac_82598EB: 1329 reg_offset = IXGBE_DCA_TXCTRL(tx_ring->reg_idx); 1330 break; 1331 case ixgbe_mac_82599EB: 1332 case ixgbe_mac_X540: 1333 reg_offset = IXGBE_DCA_TXCTRL_82599(tx_ring->reg_idx); 1334 txctrl <<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599; 1335 break; 1336 default: 1337 /* for unknown hardware do not write register */ 1338 return; 1339 } 1340 1341 /* 1342 * We can enable relaxed ordering for reads, but not writes when 1343 * DCA is enabled. This is due to a known issue in some chipsets 1344 * which will cause the DCA tag to be cleared. 1345 */ 1346 txctrl |= IXGBE_DCA_TXCTRL_DESC_RRO_EN | 1347 IXGBE_DCA_TXCTRL_DATA_RRO_EN | 1348 IXGBE_DCA_TXCTRL_DESC_DCA_EN; 1349 1350 IXGBE_WRITE_REG(hw, reg_offset, txctrl); 1351 } 1352 1353 static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter, 1354 struct ixgbe_ring *rx_ring, 1355 int cpu) 1356 { 1357 struct ixgbe_hw *hw = &adapter->hw; 1358 u32 rxctrl = 0; 1359 u8 reg_idx = rx_ring->reg_idx; 1360 1361 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1362 rxctrl = dca3_get_tag(rx_ring->dev, cpu); 1363 1364 switch (hw->mac.type) { 1365 case ixgbe_mac_82599EB: 1366 case ixgbe_mac_X540: 1367 rxctrl <<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599; 1368 break; 1369 default: 1370 break; 1371 } 1372 1373 /* 1374 * We can enable relaxed ordering for reads, but not writes when 1375 * DCA is enabled. This is due to a known issue in some chipsets 1376 * which will cause the DCA tag to be cleared. 1377 */ 1378 rxctrl |= IXGBE_DCA_RXCTRL_DESC_RRO_EN | 1379 IXGBE_DCA_RXCTRL_DATA_DCA_EN | 1380 IXGBE_DCA_RXCTRL_DESC_DCA_EN; 1381 1382 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl); 1383 } 1384 1385 static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector) 1386 { 1387 struct ixgbe_adapter *adapter = q_vector->adapter; 1388 struct ixgbe_ring *ring; 1389 int cpu = get_cpu(); 1390 1391 if (q_vector->cpu == cpu) 1392 goto out_no_update; 1393 1394 ixgbe_for_each_ring(ring, q_vector->tx) 1395 ixgbe_update_tx_dca(adapter, ring, cpu); 1396 1397 ixgbe_for_each_ring(ring, q_vector->rx) 1398 ixgbe_update_rx_dca(adapter, ring, cpu); 1399 1400 q_vector->cpu = cpu; 1401 out_no_update: 1402 put_cpu(); 1403 } 1404 1405 static void ixgbe_setup_dca(struct ixgbe_adapter *adapter) 1406 { 1407 int i; 1408 1409 /* always use CB2 mode, difference is masked in the CB driver */ 1410 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1411 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1412 IXGBE_DCA_CTRL_DCA_MODE_CB2); 1413 else 1414 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1415 IXGBE_DCA_CTRL_DCA_DISABLE); 1416 1417 for (i = 0; i < adapter->num_q_vectors; i++) { 1418 adapter->q_vector[i]->cpu = -1; 1419 ixgbe_update_dca(adapter->q_vector[i]); 1420 } 1421 } 1422 1423 static int __ixgbe_notify_dca(struct device *dev, void *data) 1424 { 1425 struct ixgbe_adapter *adapter = dev_get_drvdata(dev); 1426 unsigned long event = *(unsigned long *)data; 1427 1428 if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE)) 1429 return 0; 1430 1431 switch (event) { 1432 case DCA_PROVIDER_ADD: 1433 /* if we're already enabled, don't do it again */ 1434 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1435 break; 1436 if (dca_add_requester(dev) == 0) { 1437 adapter->flags |= IXGBE_FLAG_DCA_ENABLED; 1438 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1439 IXGBE_DCA_CTRL_DCA_MODE_CB2); 1440 break; 1441 } 1442 fallthrough; /* DCA is disabled. */ 1443 case DCA_PROVIDER_REMOVE: 1444 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { 1445 dca_remove_requester(dev); 1446 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; 1447 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1448 IXGBE_DCA_CTRL_DCA_DISABLE); 1449 } 1450 break; 1451 } 1452 1453 return 0; 1454 } 1455 1456 #endif /* CONFIG_IXGBE_DCA */ 1457 1458 #define IXGBE_RSS_L4_TYPES_MASK \ 1459 ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \ 1460 (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \ 1461 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \ 1462 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP)) 1463 1464 static inline void ixgbe_rx_hash(struct ixgbe_ring *ring, 1465 union ixgbe_adv_rx_desc *rx_desc, 1466 struct sk_buff *skb) 1467 { 1468 u16 rss_type; 1469 1470 if (!(ring->netdev->features & NETIF_F_RXHASH)) 1471 return; 1472 1473 rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) & 1474 IXGBE_RXDADV_RSSTYPE_MASK; 1475 1476 if (!rss_type) 1477 return; 1478 1479 skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), 1480 (IXGBE_RSS_L4_TYPES_MASK & (1ul << rss_type)) ? 1481 PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3); 1482 } 1483 1484 #ifdef IXGBE_FCOE 1485 /** 1486 * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type 1487 * @ring: structure containing ring specific data 1488 * @rx_desc: advanced rx descriptor 1489 * 1490 * Returns : true if it is FCoE pkt 1491 */ 1492 static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring *ring, 1493 union ixgbe_adv_rx_desc *rx_desc) 1494 { 1495 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; 1496 1497 return test_bit(__IXGBE_RX_FCOE, &ring->state) && 1498 ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) == 1499 (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE << 1500 IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT))); 1501 } 1502 1503 #endif /* IXGBE_FCOE */ 1504 /** 1505 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum 1506 * @ring: structure containing ring specific data 1507 * @rx_desc: current Rx descriptor being processed 1508 * @skb: skb currently being received and modified 1509 **/ 1510 static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring, 1511 union ixgbe_adv_rx_desc *rx_desc, 1512 struct sk_buff *skb) 1513 { 1514 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; 1515 bool encap_pkt = false; 1516 1517 skb_checksum_none_assert(skb); 1518 1519 /* Rx csum disabled */ 1520 if (!(ring->netdev->features & NETIF_F_RXCSUM)) 1521 return; 1522 1523 /* check for VXLAN and Geneve packets */ 1524 if (pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN)) { 1525 encap_pkt = true; 1526 skb->encapsulation = 1; 1527 } 1528 1529 /* if IP and error */ 1530 if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) && 1531 ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) { 1532 ring->rx_stats.csum_err++; 1533 return; 1534 } 1535 1536 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS)) 1537 return; 1538 1539 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) { 1540 /* 1541 * 82599 errata, UDP frames with a 0 checksum can be marked as 1542 * checksum errors. 1543 */ 1544 if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP)) && 1545 test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state)) 1546 return; 1547 1548 ring->rx_stats.csum_err++; 1549 return; 1550 } 1551 1552 /* It must be a TCP or UDP packet with a valid checksum */ 1553 skb->ip_summed = CHECKSUM_UNNECESSARY; 1554 if (encap_pkt) { 1555 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_OUTERIPCS)) 1556 return; 1557 1558 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_OUTERIPER)) { 1559 skb->ip_summed = CHECKSUM_NONE; 1560 return; 1561 } 1562 /* If we checked the outer header let the stack know */ 1563 skb->csum_level = 1; 1564 } 1565 } 1566 1567 static unsigned int ixgbe_rx_offset(struct ixgbe_ring *rx_ring) 1568 { 1569 return ring_uses_build_skb(rx_ring) ? IXGBE_SKB_PAD : 0; 1570 } 1571 1572 static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring, 1573 struct ixgbe_rx_buffer *bi) 1574 { 1575 struct page *page = bi->page; 1576 dma_addr_t dma; 1577 1578 /* since we are recycling buffers we should seldom need to alloc */ 1579 if (likely(page)) 1580 return true; 1581 1582 /* alloc new page for storage */ 1583 page = dev_alloc_pages(ixgbe_rx_pg_order(rx_ring)); 1584 if (unlikely(!page)) { 1585 rx_ring->rx_stats.alloc_rx_page_failed++; 1586 return false; 1587 } 1588 1589 /* map page for use */ 1590 dma = dma_map_page_attrs(rx_ring->dev, page, 0, 1591 ixgbe_rx_pg_size(rx_ring), 1592 DMA_FROM_DEVICE, 1593 IXGBE_RX_DMA_ATTR); 1594 1595 /* 1596 * if mapping failed free memory back to system since 1597 * there isn't much point in holding memory we can't use 1598 */ 1599 if (dma_mapping_error(rx_ring->dev, dma)) { 1600 __free_pages(page, ixgbe_rx_pg_order(rx_ring)); 1601 1602 rx_ring->rx_stats.alloc_rx_page_failed++; 1603 return false; 1604 } 1605 1606 bi->dma = dma; 1607 bi->page = page; 1608 bi->page_offset = rx_ring->rx_offset; 1609 page_ref_add(page, USHRT_MAX - 1); 1610 bi->pagecnt_bias = USHRT_MAX; 1611 rx_ring->rx_stats.alloc_rx_page++; 1612 1613 return true; 1614 } 1615 1616 /** 1617 * ixgbe_alloc_rx_buffers - Replace used receive buffers 1618 * @rx_ring: ring to place buffers on 1619 * @cleaned_count: number of buffers to replace 1620 **/ 1621 void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count) 1622 { 1623 union ixgbe_adv_rx_desc *rx_desc; 1624 struct ixgbe_rx_buffer *bi; 1625 u16 i = rx_ring->next_to_use; 1626 u16 bufsz; 1627 1628 /* nothing to do */ 1629 if (!cleaned_count) 1630 return; 1631 1632 rx_desc = IXGBE_RX_DESC(rx_ring, i); 1633 bi = &rx_ring->rx_buffer_info[i]; 1634 i -= rx_ring->count; 1635 1636 bufsz = ixgbe_rx_bufsz(rx_ring); 1637 1638 do { 1639 if (!ixgbe_alloc_mapped_page(rx_ring, bi)) 1640 break; 1641 1642 /* sync the buffer for use by the device */ 1643 dma_sync_single_range_for_device(rx_ring->dev, bi->dma, 1644 bi->page_offset, bufsz, 1645 DMA_FROM_DEVICE); 1646 1647 /* 1648 * Refresh the desc even if buffer_addrs didn't change 1649 * because each write-back erases this info. 1650 */ 1651 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); 1652 1653 rx_desc++; 1654 bi++; 1655 i++; 1656 if (unlikely(!i)) { 1657 rx_desc = IXGBE_RX_DESC(rx_ring, 0); 1658 bi = rx_ring->rx_buffer_info; 1659 i -= rx_ring->count; 1660 } 1661 1662 /* clear the length for the next_to_use descriptor */ 1663 rx_desc->wb.upper.length = 0; 1664 1665 cleaned_count--; 1666 } while (cleaned_count); 1667 1668 i += rx_ring->count; 1669 1670 if (rx_ring->next_to_use != i) { 1671 rx_ring->next_to_use = i; 1672 1673 /* update next to alloc since we have filled the ring */ 1674 rx_ring->next_to_alloc = i; 1675 1676 /* Force memory writes to complete before letting h/w 1677 * know there are new descriptors to fetch. (Only 1678 * applicable for weak-ordered memory model archs, 1679 * such as IA-64). 1680 */ 1681 wmb(); 1682 writel(i, rx_ring->tail); 1683 } 1684 } 1685 1686 static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring, 1687 struct sk_buff *skb) 1688 { 1689 u16 hdr_len = skb_headlen(skb); 1690 1691 /* set gso_size to avoid messing up TCP MSS */ 1692 skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len), 1693 IXGBE_CB(skb)->append_cnt); 1694 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; 1695 } 1696 1697 static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring, 1698 struct sk_buff *skb) 1699 { 1700 /* if append_cnt is 0 then frame is not RSC */ 1701 if (!IXGBE_CB(skb)->append_cnt) 1702 return; 1703 1704 rx_ring->rx_stats.rsc_count += IXGBE_CB(skb)->append_cnt; 1705 rx_ring->rx_stats.rsc_flush++; 1706 1707 ixgbe_set_rsc_gso_size(rx_ring, skb); 1708 1709 /* gso_size is computed using append_cnt so always clear it last */ 1710 IXGBE_CB(skb)->append_cnt = 0; 1711 } 1712 1713 /** 1714 * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor 1715 * @rx_ring: rx descriptor ring packet is being transacted on 1716 * @rx_desc: pointer to the EOP Rx descriptor 1717 * @skb: pointer to current skb being populated 1718 * 1719 * This function checks the ring, descriptor, and packet information in 1720 * order to populate the hash, checksum, VLAN, timestamp, protocol, and 1721 * other fields within the skb. 1722 **/ 1723 void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring, 1724 union ixgbe_adv_rx_desc *rx_desc, 1725 struct sk_buff *skb) 1726 { 1727 struct net_device *dev = rx_ring->netdev; 1728 u32 flags = rx_ring->q_vector->adapter->flags; 1729 1730 ixgbe_update_rsc_stats(rx_ring, skb); 1731 1732 ixgbe_rx_hash(rx_ring, rx_desc, skb); 1733 1734 ixgbe_rx_checksum(rx_ring, rx_desc, skb); 1735 1736 if (unlikely(flags & IXGBE_FLAG_RX_HWTSTAMP_ENABLED)) 1737 ixgbe_ptp_rx_hwtstamp(rx_ring, rx_desc, skb); 1738 1739 if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && 1740 ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) { 1741 u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan); 1742 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); 1743 } 1744 1745 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_STAT_SECP)) 1746 ixgbe_ipsec_rx(rx_ring, rx_desc, skb); 1747 1748 /* record Rx queue, or update MACVLAN statistics */ 1749 if (netif_is_ixgbe(dev)) 1750 skb_record_rx_queue(skb, rx_ring->queue_index); 1751 else 1752 macvlan_count_rx(netdev_priv(dev), skb->len + ETH_HLEN, true, 1753 false); 1754 1755 skb->protocol = eth_type_trans(skb, dev); 1756 } 1757 1758 void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector, 1759 struct sk_buff *skb) 1760 { 1761 napi_gro_receive(&q_vector->napi, skb); 1762 } 1763 1764 /** 1765 * ixgbe_is_non_eop - process handling of non-EOP buffers 1766 * @rx_ring: Rx ring being processed 1767 * @rx_desc: Rx descriptor for current buffer 1768 * @skb: Current socket buffer containing buffer in progress 1769 * 1770 * This function updates next to clean. If the buffer is an EOP buffer 1771 * this function exits returning false, otherwise it will place the 1772 * sk_buff in the next buffer to be chained and return true indicating 1773 * that this is in fact a non-EOP buffer. 1774 **/ 1775 static bool ixgbe_is_non_eop(struct ixgbe_ring *rx_ring, 1776 union ixgbe_adv_rx_desc *rx_desc, 1777 struct sk_buff *skb) 1778 { 1779 u32 ntc = rx_ring->next_to_clean + 1; 1780 1781 /* fetch, update, and store next to clean */ 1782 ntc = (ntc < rx_ring->count) ? ntc : 0; 1783 rx_ring->next_to_clean = ntc; 1784 1785 prefetch(IXGBE_RX_DESC(rx_ring, ntc)); 1786 1787 /* update RSC append count if present */ 1788 if (ring_is_rsc_enabled(rx_ring)) { 1789 __le32 rsc_enabled = rx_desc->wb.lower.lo_dword.data & 1790 cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK); 1791 1792 if (unlikely(rsc_enabled)) { 1793 u32 rsc_cnt = le32_to_cpu(rsc_enabled); 1794 1795 rsc_cnt >>= IXGBE_RXDADV_RSCCNT_SHIFT; 1796 IXGBE_CB(skb)->append_cnt += rsc_cnt - 1; 1797 1798 /* update ntc based on RSC value */ 1799 ntc = le32_to_cpu(rx_desc->wb.upper.status_error); 1800 ntc &= IXGBE_RXDADV_NEXTP_MASK; 1801 ntc >>= IXGBE_RXDADV_NEXTP_SHIFT; 1802 } 1803 } 1804 1805 /* if we are the last buffer then there is nothing else to do */ 1806 if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))) 1807 return false; 1808 1809 /* place skb in next buffer to be received */ 1810 rx_ring->rx_buffer_info[ntc].skb = skb; 1811 rx_ring->rx_stats.non_eop_descs++; 1812 1813 return true; 1814 } 1815 1816 /** 1817 * ixgbe_pull_tail - ixgbe specific version of skb_pull_tail 1818 * @rx_ring: rx descriptor ring packet is being transacted on 1819 * @skb: pointer to current skb being adjusted 1820 * 1821 * This function is an ixgbe specific version of __pskb_pull_tail. The 1822 * main difference between this version and the original function is that 1823 * this function can make several assumptions about the state of things 1824 * that allow for significant optimizations versus the standard function. 1825 * As a result we can do things like drop a frag and maintain an accurate 1826 * truesize for the skb. 1827 */ 1828 static void ixgbe_pull_tail(struct ixgbe_ring *rx_ring, 1829 struct sk_buff *skb) 1830 { 1831 skb_frag_t *frag = &skb_shinfo(skb)->frags[0]; 1832 unsigned char *va; 1833 unsigned int pull_len; 1834 1835 /* 1836 * it is valid to use page_address instead of kmap since we are 1837 * working with pages allocated out of the lomem pool per 1838 * alloc_page(GFP_ATOMIC) 1839 */ 1840 va = skb_frag_address(frag); 1841 1842 /* 1843 * we need the header to contain the greater of either ETH_HLEN or 1844 * 60 bytes if the skb->len is less than 60 for skb_pad. 1845 */ 1846 pull_len = eth_get_headlen(skb->dev, va, IXGBE_RX_HDR_SIZE); 1847 1848 /* align pull length to size of long to optimize memcpy performance */ 1849 skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long))); 1850 1851 /* update all of the pointers */ 1852 skb_frag_size_sub(frag, pull_len); 1853 skb_frag_off_add(frag, pull_len); 1854 skb->data_len -= pull_len; 1855 skb->tail += pull_len; 1856 } 1857 1858 /** 1859 * ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB 1860 * @rx_ring: rx descriptor ring packet is being transacted on 1861 * @skb: pointer to current skb being updated 1862 * 1863 * This function provides a basic DMA sync up for the first fragment of an 1864 * skb. The reason for doing this is that the first fragment cannot be 1865 * unmapped until we have reached the end of packet descriptor for a buffer 1866 * chain. 1867 */ 1868 static void ixgbe_dma_sync_frag(struct ixgbe_ring *rx_ring, 1869 struct sk_buff *skb) 1870 { 1871 if (ring_uses_build_skb(rx_ring)) { 1872 unsigned long mask = (unsigned long)ixgbe_rx_pg_size(rx_ring) - 1; 1873 unsigned long offset = (unsigned long)(skb->data) & mask; 1874 1875 dma_sync_single_range_for_cpu(rx_ring->dev, 1876 IXGBE_CB(skb)->dma, 1877 offset, 1878 skb_headlen(skb), 1879 DMA_FROM_DEVICE); 1880 } else { 1881 skb_frag_t *frag = &skb_shinfo(skb)->frags[0]; 1882 1883 dma_sync_single_range_for_cpu(rx_ring->dev, 1884 IXGBE_CB(skb)->dma, 1885 skb_frag_off(frag), 1886 skb_frag_size(frag), 1887 DMA_FROM_DEVICE); 1888 } 1889 1890 /* If the page was released, just unmap it. */ 1891 if (unlikely(IXGBE_CB(skb)->page_released)) { 1892 dma_unmap_page_attrs(rx_ring->dev, IXGBE_CB(skb)->dma, 1893 ixgbe_rx_pg_size(rx_ring), 1894 DMA_FROM_DEVICE, 1895 IXGBE_RX_DMA_ATTR); 1896 } 1897 } 1898 1899 /** 1900 * ixgbe_cleanup_headers - Correct corrupted or empty headers 1901 * @rx_ring: rx descriptor ring packet is being transacted on 1902 * @rx_desc: pointer to the EOP Rx descriptor 1903 * @skb: pointer to current skb being fixed 1904 * 1905 * Check if the skb is valid in the XDP case it will be an error pointer. 1906 * Return true in this case to abort processing and advance to next 1907 * descriptor. 1908 * 1909 * Check for corrupted packet headers caused by senders on the local L2 1910 * embedded NIC switch not setting up their Tx Descriptors right. These 1911 * should be very rare. 1912 * 1913 * Also address the case where we are pulling data in on pages only 1914 * and as such no data is present in the skb header. 1915 * 1916 * In addition if skb is not at least 60 bytes we need to pad it so that 1917 * it is large enough to qualify as a valid Ethernet frame. 1918 * 1919 * Returns true if an error was encountered and skb was freed. 1920 **/ 1921 bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring, 1922 union ixgbe_adv_rx_desc *rx_desc, 1923 struct sk_buff *skb) 1924 { 1925 struct net_device *netdev = rx_ring->netdev; 1926 1927 /* Verify netdev is present, and that packet does not have any 1928 * errors that would be unacceptable to the netdev. 1929 */ 1930 if (!netdev || 1931 (unlikely(ixgbe_test_staterr(rx_desc, 1932 IXGBE_RXDADV_ERR_FRAME_ERR_MASK) && 1933 !(netdev->features & NETIF_F_RXALL)))) { 1934 dev_kfree_skb_any(skb); 1935 return true; 1936 } 1937 1938 /* place header in linear portion of buffer */ 1939 if (!skb_headlen(skb)) 1940 ixgbe_pull_tail(rx_ring, skb); 1941 1942 #ifdef IXGBE_FCOE 1943 /* do not attempt to pad FCoE Frames as this will disrupt DDP */ 1944 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) 1945 return false; 1946 1947 #endif 1948 /* if eth_skb_pad returns an error the skb was freed */ 1949 if (eth_skb_pad(skb)) 1950 return true; 1951 1952 return false; 1953 } 1954 1955 /** 1956 * ixgbe_reuse_rx_page - page flip buffer and store it back on the ring 1957 * @rx_ring: rx descriptor ring to store buffers on 1958 * @old_buff: donor buffer to have page reused 1959 * 1960 * Synchronizes page for reuse by the adapter 1961 **/ 1962 static void ixgbe_reuse_rx_page(struct ixgbe_ring *rx_ring, 1963 struct ixgbe_rx_buffer *old_buff) 1964 { 1965 struct ixgbe_rx_buffer *new_buff; 1966 u16 nta = rx_ring->next_to_alloc; 1967 1968 new_buff = &rx_ring->rx_buffer_info[nta]; 1969 1970 /* update, and store next to alloc */ 1971 nta++; 1972 rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; 1973 1974 /* Transfer page from old buffer to new buffer. 1975 * Move each member individually to avoid possible store 1976 * forwarding stalls and unnecessary copy of skb. 1977 */ 1978 new_buff->dma = old_buff->dma; 1979 new_buff->page = old_buff->page; 1980 new_buff->page_offset = old_buff->page_offset; 1981 new_buff->pagecnt_bias = old_buff->pagecnt_bias; 1982 } 1983 1984 static bool ixgbe_can_reuse_rx_page(struct ixgbe_rx_buffer *rx_buffer, 1985 int rx_buffer_pgcnt) 1986 { 1987 unsigned int pagecnt_bias = rx_buffer->pagecnt_bias; 1988 struct page *page = rx_buffer->page; 1989 1990 /* avoid re-using remote and pfmemalloc pages */ 1991 if (!dev_page_is_reusable(page)) 1992 return false; 1993 1994 #if (PAGE_SIZE < 8192) 1995 /* if we are only owner of page we can reuse it */ 1996 if (unlikely((rx_buffer_pgcnt - pagecnt_bias) > 1)) 1997 return false; 1998 #else 1999 /* The last offset is a bit aggressive in that we assume the 2000 * worst case of FCoE being enabled and using a 3K buffer. 2001 * However this should have minimal impact as the 1K extra is 2002 * still less than one buffer in size. 2003 */ 2004 #define IXGBE_LAST_OFFSET \ 2005 (SKB_WITH_OVERHEAD(PAGE_SIZE) - IXGBE_RXBUFFER_3K) 2006 if (rx_buffer->page_offset > IXGBE_LAST_OFFSET) 2007 return false; 2008 #endif 2009 2010 /* If we have drained the page fragment pool we need to update 2011 * the pagecnt_bias and page count so that we fully restock the 2012 * number of references the driver holds. 2013 */ 2014 if (unlikely(pagecnt_bias == 1)) { 2015 page_ref_add(page, USHRT_MAX - 1); 2016 rx_buffer->pagecnt_bias = USHRT_MAX; 2017 } 2018 2019 return true; 2020 } 2021 2022 /** 2023 * ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff 2024 * @rx_ring: rx descriptor ring to transact packets on 2025 * @rx_buffer: buffer containing page to add 2026 * @skb: sk_buff to place the data into 2027 * @size: size of data in rx_buffer 2028 * 2029 * This function will add the data contained in rx_buffer->page to the skb. 2030 * This is done either through a direct copy if the data in the buffer is 2031 * less than the skb header size, otherwise it will just attach the page as 2032 * a frag to the skb. 2033 * 2034 * The function will then update the page offset if necessary and return 2035 * true if the buffer can be reused by the adapter. 2036 **/ 2037 static void ixgbe_add_rx_frag(struct ixgbe_ring *rx_ring, 2038 struct ixgbe_rx_buffer *rx_buffer, 2039 struct sk_buff *skb, 2040 unsigned int size) 2041 { 2042 #if (PAGE_SIZE < 8192) 2043 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2044 #else 2045 unsigned int truesize = rx_ring->rx_offset ? 2046 SKB_DATA_ALIGN(rx_ring->rx_offset + size) : 2047 SKB_DATA_ALIGN(size); 2048 #endif 2049 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buffer->page, 2050 rx_buffer->page_offset, size, truesize); 2051 #if (PAGE_SIZE < 8192) 2052 rx_buffer->page_offset ^= truesize; 2053 #else 2054 rx_buffer->page_offset += truesize; 2055 #endif 2056 } 2057 2058 static struct ixgbe_rx_buffer *ixgbe_get_rx_buffer(struct ixgbe_ring *rx_ring, 2059 union ixgbe_adv_rx_desc *rx_desc, 2060 struct sk_buff **skb, 2061 const unsigned int size, 2062 int *rx_buffer_pgcnt) 2063 { 2064 struct ixgbe_rx_buffer *rx_buffer; 2065 2066 rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; 2067 *rx_buffer_pgcnt = 2068 #if (PAGE_SIZE < 8192) 2069 page_count(rx_buffer->page); 2070 #else 2071 0; 2072 #endif 2073 prefetchw(rx_buffer->page); 2074 *skb = rx_buffer->skb; 2075 2076 /* Delay unmapping of the first packet. It carries the header 2077 * information, HW may still access the header after the writeback. 2078 * Only unmap it when EOP is reached 2079 */ 2080 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) { 2081 if (!*skb) 2082 goto skip_sync; 2083 } else { 2084 if (*skb) 2085 ixgbe_dma_sync_frag(rx_ring, *skb); 2086 } 2087 2088 /* we are reusing so sync this buffer for CPU use */ 2089 dma_sync_single_range_for_cpu(rx_ring->dev, 2090 rx_buffer->dma, 2091 rx_buffer->page_offset, 2092 size, 2093 DMA_FROM_DEVICE); 2094 skip_sync: 2095 rx_buffer->pagecnt_bias--; 2096 2097 return rx_buffer; 2098 } 2099 2100 static void ixgbe_put_rx_buffer(struct ixgbe_ring *rx_ring, 2101 struct ixgbe_rx_buffer *rx_buffer, 2102 struct sk_buff *skb, 2103 int rx_buffer_pgcnt) 2104 { 2105 if (ixgbe_can_reuse_rx_page(rx_buffer, rx_buffer_pgcnt)) { 2106 /* hand second half of page back to the ring */ 2107 ixgbe_reuse_rx_page(rx_ring, rx_buffer); 2108 } else { 2109 if (skb && IXGBE_CB(skb)->dma == rx_buffer->dma) { 2110 /* the page has been released from the ring */ 2111 IXGBE_CB(skb)->page_released = true; 2112 } else { 2113 /* we are not reusing the buffer so unmap it */ 2114 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, 2115 ixgbe_rx_pg_size(rx_ring), 2116 DMA_FROM_DEVICE, 2117 IXGBE_RX_DMA_ATTR); 2118 } 2119 __page_frag_cache_drain(rx_buffer->page, 2120 rx_buffer->pagecnt_bias); 2121 } 2122 2123 /* clear contents of rx_buffer */ 2124 rx_buffer->page = NULL; 2125 rx_buffer->skb = NULL; 2126 } 2127 2128 static struct sk_buff *ixgbe_construct_skb(struct ixgbe_ring *rx_ring, 2129 struct ixgbe_rx_buffer *rx_buffer, 2130 struct xdp_buff *xdp, 2131 union ixgbe_adv_rx_desc *rx_desc) 2132 { 2133 unsigned int size = xdp->data_end - xdp->data; 2134 #if (PAGE_SIZE < 8192) 2135 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2136 #else 2137 unsigned int truesize = SKB_DATA_ALIGN(xdp->data_end - 2138 xdp->data_hard_start); 2139 #endif 2140 struct sk_buff *skb; 2141 2142 /* prefetch first cache line of first page */ 2143 net_prefetch(xdp->data); 2144 2145 /* Note, we get here by enabling legacy-rx via: 2146 * 2147 * ethtool --set-priv-flags <dev> legacy-rx on 2148 * 2149 * In this mode, we currently get 0 extra XDP headroom as 2150 * opposed to having legacy-rx off, where we process XDP 2151 * packets going to stack via ixgbe_build_skb(). The latter 2152 * provides us currently with 192 bytes of headroom. 2153 * 2154 * For ixgbe_construct_skb() mode it means that the 2155 * xdp->data_meta will always point to xdp->data, since 2156 * the helper cannot expand the head. Should this ever 2157 * change in future for legacy-rx mode on, then lets also 2158 * add xdp->data_meta handling here. 2159 */ 2160 2161 /* allocate a skb to store the frags */ 2162 skb = napi_alloc_skb(&rx_ring->q_vector->napi, IXGBE_RX_HDR_SIZE); 2163 if (unlikely(!skb)) 2164 return NULL; 2165 2166 if (size > IXGBE_RX_HDR_SIZE) { 2167 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) 2168 IXGBE_CB(skb)->dma = rx_buffer->dma; 2169 2170 skb_add_rx_frag(skb, 0, rx_buffer->page, 2171 xdp->data - page_address(rx_buffer->page), 2172 size, truesize); 2173 #if (PAGE_SIZE < 8192) 2174 rx_buffer->page_offset ^= truesize; 2175 #else 2176 rx_buffer->page_offset += truesize; 2177 #endif 2178 } else { 2179 memcpy(__skb_put(skb, size), 2180 xdp->data, ALIGN(size, sizeof(long))); 2181 rx_buffer->pagecnt_bias++; 2182 } 2183 2184 return skb; 2185 } 2186 2187 static struct sk_buff *ixgbe_build_skb(struct ixgbe_ring *rx_ring, 2188 struct ixgbe_rx_buffer *rx_buffer, 2189 struct xdp_buff *xdp, 2190 union ixgbe_adv_rx_desc *rx_desc) 2191 { 2192 unsigned int metasize = xdp->data - xdp->data_meta; 2193 #if (PAGE_SIZE < 8192) 2194 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2195 #else 2196 unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + 2197 SKB_DATA_ALIGN(xdp->data_end - 2198 xdp->data_hard_start); 2199 #endif 2200 struct sk_buff *skb; 2201 2202 /* Prefetch first cache line of first page. If xdp->data_meta 2203 * is unused, this points extactly as xdp->data, otherwise we 2204 * likely have a consumer accessing first few bytes of meta 2205 * data, and then actual data. 2206 */ 2207 net_prefetch(xdp->data_meta); 2208 2209 /* build an skb to around the page buffer */ 2210 skb = napi_build_skb(xdp->data_hard_start, truesize); 2211 if (unlikely(!skb)) 2212 return NULL; 2213 2214 /* update pointers within the skb to store the data */ 2215 skb_reserve(skb, xdp->data - xdp->data_hard_start); 2216 __skb_put(skb, xdp->data_end - xdp->data); 2217 if (metasize) 2218 skb_metadata_set(skb, metasize); 2219 2220 /* record DMA address if this is the start of a chain of buffers */ 2221 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) 2222 IXGBE_CB(skb)->dma = rx_buffer->dma; 2223 2224 /* update buffer offset */ 2225 #if (PAGE_SIZE < 8192) 2226 rx_buffer->page_offset ^= truesize; 2227 #else 2228 rx_buffer->page_offset += truesize; 2229 #endif 2230 2231 return skb; 2232 } 2233 2234 static int ixgbe_run_xdp(struct ixgbe_adapter *adapter, 2235 struct ixgbe_ring *rx_ring, 2236 struct xdp_buff *xdp) 2237 { 2238 int err, result = IXGBE_XDP_PASS; 2239 struct bpf_prog *xdp_prog; 2240 struct ixgbe_ring *ring; 2241 struct xdp_frame *xdpf; 2242 u32 act; 2243 2244 xdp_prog = READ_ONCE(rx_ring->xdp_prog); 2245 2246 if (!xdp_prog) 2247 goto xdp_out; 2248 2249 prefetchw(xdp->data_hard_start); /* xdp_frame write */ 2250 2251 act = bpf_prog_run_xdp(xdp_prog, xdp); 2252 switch (act) { 2253 case XDP_PASS: 2254 break; 2255 case XDP_TX: 2256 xdpf = xdp_convert_buff_to_frame(xdp); 2257 if (unlikely(!xdpf)) 2258 goto out_failure; 2259 ring = ixgbe_determine_xdp_ring(adapter); 2260 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 2261 spin_lock(&ring->tx_lock); 2262 result = ixgbe_xmit_xdp_ring(ring, xdpf); 2263 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 2264 spin_unlock(&ring->tx_lock); 2265 if (result == IXGBE_XDP_CONSUMED) 2266 goto out_failure; 2267 break; 2268 case XDP_REDIRECT: 2269 err = xdp_do_redirect(adapter->netdev, xdp, xdp_prog); 2270 if (err) 2271 goto out_failure; 2272 result = IXGBE_XDP_REDIR; 2273 break; 2274 default: 2275 bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act); 2276 fallthrough; 2277 case XDP_ABORTED: 2278 out_failure: 2279 trace_xdp_exception(rx_ring->netdev, xdp_prog, act); 2280 fallthrough; /* handle aborts by dropping packet */ 2281 case XDP_DROP: 2282 result = IXGBE_XDP_CONSUMED; 2283 break; 2284 } 2285 xdp_out: 2286 return result; 2287 } 2288 2289 static unsigned int ixgbe_rx_frame_truesize(struct ixgbe_ring *rx_ring, 2290 unsigned int size) 2291 { 2292 unsigned int truesize; 2293 2294 #if (PAGE_SIZE < 8192) 2295 truesize = ixgbe_rx_pg_size(rx_ring) / 2; /* Must be power-of-2 */ 2296 #else 2297 truesize = rx_ring->rx_offset ? 2298 SKB_DATA_ALIGN(rx_ring->rx_offset + size) + 2299 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) : 2300 SKB_DATA_ALIGN(size); 2301 #endif 2302 return truesize; 2303 } 2304 2305 static void ixgbe_rx_buffer_flip(struct ixgbe_ring *rx_ring, 2306 struct ixgbe_rx_buffer *rx_buffer, 2307 unsigned int size) 2308 { 2309 unsigned int truesize = ixgbe_rx_frame_truesize(rx_ring, size); 2310 #if (PAGE_SIZE < 8192) 2311 rx_buffer->page_offset ^= truesize; 2312 #else 2313 rx_buffer->page_offset += truesize; 2314 #endif 2315 } 2316 2317 /** 2318 * ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf 2319 * @q_vector: structure containing interrupt and ring information 2320 * @rx_ring: rx descriptor ring to transact packets on 2321 * @budget: Total limit on number of packets to process 2322 * 2323 * This function provides a "bounce buffer" approach to Rx interrupt 2324 * processing. The advantage to this is that on systems that have 2325 * expensive overhead for IOMMU access this provides a means of avoiding 2326 * it by maintaining the mapping of the page to the syste. 2327 * 2328 * Returns amount of work completed 2329 **/ 2330 static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, 2331 struct ixgbe_ring *rx_ring, 2332 const int budget) 2333 { 2334 unsigned int total_rx_bytes = 0, total_rx_packets = 0, frame_sz = 0; 2335 struct ixgbe_adapter *adapter = q_vector->adapter; 2336 #ifdef IXGBE_FCOE 2337 int ddp_bytes; 2338 unsigned int mss = 0; 2339 #endif /* IXGBE_FCOE */ 2340 u16 cleaned_count = ixgbe_desc_unused(rx_ring); 2341 unsigned int offset = rx_ring->rx_offset; 2342 unsigned int xdp_xmit = 0; 2343 struct xdp_buff xdp; 2344 int xdp_res = 0; 2345 2346 /* Frame size depend on rx_ring setup when PAGE_SIZE=4K */ 2347 #if (PAGE_SIZE < 8192) 2348 frame_sz = ixgbe_rx_frame_truesize(rx_ring, 0); 2349 #endif 2350 xdp_init_buff(&xdp, frame_sz, &rx_ring->xdp_rxq); 2351 2352 while (likely(total_rx_packets < budget)) { 2353 union ixgbe_adv_rx_desc *rx_desc; 2354 struct ixgbe_rx_buffer *rx_buffer; 2355 struct sk_buff *skb; 2356 int rx_buffer_pgcnt; 2357 unsigned int size; 2358 2359 /* return some buffers to hardware, one at a time is too slow */ 2360 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { 2361 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count); 2362 cleaned_count = 0; 2363 } 2364 2365 rx_desc = IXGBE_RX_DESC(rx_ring, rx_ring->next_to_clean); 2366 size = le16_to_cpu(rx_desc->wb.upper.length); 2367 if (!size) 2368 break; 2369 2370 /* This memory barrier is needed to keep us from reading 2371 * any other fields out of the rx_desc until we know the 2372 * descriptor has been written back 2373 */ 2374 dma_rmb(); 2375 2376 rx_buffer = ixgbe_get_rx_buffer(rx_ring, rx_desc, &skb, size, &rx_buffer_pgcnt); 2377 2378 /* retrieve a buffer from the ring */ 2379 if (!skb) { 2380 unsigned char *hard_start; 2381 2382 hard_start = page_address(rx_buffer->page) + 2383 rx_buffer->page_offset - offset; 2384 xdp_prepare_buff(&xdp, hard_start, offset, size, true); 2385 xdp_buff_clear_frags_flag(&xdp); 2386 #if (PAGE_SIZE > 4096) 2387 /* At larger PAGE_SIZE, frame_sz depend on len size */ 2388 xdp.frame_sz = ixgbe_rx_frame_truesize(rx_ring, size); 2389 #endif 2390 xdp_res = ixgbe_run_xdp(adapter, rx_ring, &xdp); 2391 } 2392 2393 if (xdp_res) { 2394 if (xdp_res & (IXGBE_XDP_TX | IXGBE_XDP_REDIR)) { 2395 xdp_xmit |= xdp_res; 2396 ixgbe_rx_buffer_flip(rx_ring, rx_buffer, size); 2397 } else { 2398 rx_buffer->pagecnt_bias++; 2399 } 2400 total_rx_packets++; 2401 total_rx_bytes += size; 2402 } else if (skb) { 2403 ixgbe_add_rx_frag(rx_ring, rx_buffer, skb, size); 2404 } else if (ring_uses_build_skb(rx_ring)) { 2405 skb = ixgbe_build_skb(rx_ring, rx_buffer, 2406 &xdp, rx_desc); 2407 } else { 2408 skb = ixgbe_construct_skb(rx_ring, rx_buffer, 2409 &xdp, rx_desc); 2410 } 2411 2412 /* exit if we failed to retrieve a buffer */ 2413 if (!xdp_res && !skb) { 2414 rx_ring->rx_stats.alloc_rx_buff_failed++; 2415 rx_buffer->pagecnt_bias++; 2416 break; 2417 } 2418 2419 ixgbe_put_rx_buffer(rx_ring, rx_buffer, skb, rx_buffer_pgcnt); 2420 cleaned_count++; 2421 2422 /* place incomplete frames back on ring for completion */ 2423 if (ixgbe_is_non_eop(rx_ring, rx_desc, skb)) 2424 continue; 2425 2426 /* verify the packet layout is correct */ 2427 if (xdp_res || ixgbe_cleanup_headers(rx_ring, rx_desc, skb)) 2428 continue; 2429 2430 /* probably a little skewed due to removing CRC */ 2431 total_rx_bytes += skb->len; 2432 2433 /* populate checksum, timestamp, VLAN, and protocol */ 2434 ixgbe_process_skb_fields(rx_ring, rx_desc, skb); 2435 2436 #ifdef IXGBE_FCOE 2437 /* if ddp, not passing to ULD unless for FCP_RSP or error */ 2438 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) { 2439 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb); 2440 /* include DDPed FCoE data */ 2441 if (ddp_bytes > 0) { 2442 if (!mss) { 2443 mss = rx_ring->netdev->mtu - 2444 sizeof(struct fcoe_hdr) - 2445 sizeof(struct fc_frame_header) - 2446 sizeof(struct fcoe_crc_eof); 2447 if (mss > 512) 2448 mss &= ~511; 2449 } 2450 total_rx_bytes += ddp_bytes; 2451 total_rx_packets += DIV_ROUND_UP(ddp_bytes, 2452 mss); 2453 } 2454 if (!ddp_bytes) { 2455 dev_kfree_skb_any(skb); 2456 continue; 2457 } 2458 } 2459 2460 #endif /* IXGBE_FCOE */ 2461 ixgbe_rx_skb(q_vector, skb); 2462 2463 /* update budget accounting */ 2464 total_rx_packets++; 2465 } 2466 2467 if (xdp_xmit & IXGBE_XDP_REDIR) 2468 xdp_do_flush(); 2469 2470 if (xdp_xmit & IXGBE_XDP_TX) { 2471 struct ixgbe_ring *ring = ixgbe_determine_xdp_ring(adapter); 2472 2473 ixgbe_xdp_ring_update_tail_locked(ring); 2474 } 2475 2476 ixgbe_update_rx_ring_stats(rx_ring, q_vector, total_rx_packets, 2477 total_rx_bytes); 2478 2479 return total_rx_packets; 2480 } 2481 2482 /** 2483 * ixgbe_configure_msix - Configure MSI-X hardware 2484 * @adapter: board private structure 2485 * 2486 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X 2487 * interrupts. 2488 **/ 2489 static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) 2490 { 2491 struct ixgbe_q_vector *q_vector; 2492 int v_idx; 2493 u32 mask; 2494 2495 /* Populate MSIX to EITR Select */ 2496 if (adapter->num_vfs > 32) { 2497 u32 eitrsel = BIT(adapter->num_vfs - 32) - 1; 2498 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel); 2499 } 2500 2501 /* 2502 * Populate the IVAR table and set the ITR values to the 2503 * corresponding register. 2504 */ 2505 for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { 2506 struct ixgbe_ring *ring; 2507 q_vector = adapter->q_vector[v_idx]; 2508 2509 ixgbe_for_each_ring(ring, q_vector->rx) 2510 ixgbe_set_ivar(adapter, 0, ring->reg_idx, v_idx); 2511 2512 ixgbe_for_each_ring(ring, q_vector->tx) 2513 ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx); 2514 2515 ixgbe_write_eitr(q_vector); 2516 } 2517 2518 switch (adapter->hw.mac.type) { 2519 case ixgbe_mac_82598EB: 2520 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX, 2521 v_idx); 2522 break; 2523 case ixgbe_mac_82599EB: 2524 case ixgbe_mac_X540: 2525 case ixgbe_mac_X550: 2526 case ixgbe_mac_X550EM_x: 2527 case ixgbe_mac_x550em_a: 2528 case ixgbe_mac_e610: 2529 ixgbe_set_ivar(adapter, -1, 1, v_idx); 2530 break; 2531 default: 2532 break; 2533 } 2534 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950); 2535 2536 /* set up to autoclear timer, and the vectors */ 2537 mask = IXGBE_EIMS_ENABLE_MASK; 2538 mask &= ~(IXGBE_EIMS_OTHER | 2539 IXGBE_EIMS_MAILBOX | 2540 IXGBE_EIMS_LSC); 2541 2542 if (adapter->hw.mac.type == ixgbe_mac_e610) 2543 mask &= ~IXGBE_EIMS_FW_EVENT; 2544 2545 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); 2546 } 2547 2548 /** 2549 * ixgbe_update_itr - update the dynamic ITR value based on statistics 2550 * @q_vector: structure containing interrupt and ring information 2551 * @ring_container: structure containing ring performance data 2552 * 2553 * Stores a new ITR value based on packets and byte 2554 * counts during the last interrupt. The advantage of per interrupt 2555 * computation is faster updates and more accurate ITR for the current 2556 * traffic pattern. Constants in this function were computed 2557 * based on theoretical maximum wire speed and thresholds were set based 2558 * on testing data as well as attempting to minimize response time 2559 * while increasing bulk throughput. 2560 **/ 2561 static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector, 2562 struct ixgbe_ring_container *ring_container) 2563 { 2564 unsigned int itr = IXGBE_ITR_ADAPTIVE_MIN_USECS | 2565 IXGBE_ITR_ADAPTIVE_LATENCY; 2566 unsigned int avg_wire_size, packets, bytes; 2567 unsigned long next_update = jiffies; 2568 2569 /* If we don't have any rings just leave ourselves set for maximum 2570 * possible latency so we take ourselves out of the equation. 2571 */ 2572 if (!ring_container->ring) 2573 return; 2574 2575 /* If we didn't update within up to 1 - 2 jiffies we can assume 2576 * that either packets are coming in so slow there hasn't been 2577 * any work, or that there is so much work that NAPI is dealing 2578 * with interrupt moderation and we don't need to do anything. 2579 */ 2580 if (time_after(next_update, ring_container->next_update)) 2581 goto clear_counts; 2582 2583 packets = ring_container->total_packets; 2584 2585 /* We have no packets to actually measure against. This means 2586 * either one of the other queues on this vector is active or 2587 * we are a Tx queue doing TSO with too high of an interrupt rate. 2588 * 2589 * When this occurs just tick up our delay by the minimum value 2590 * and hope that this extra delay will prevent us from being called 2591 * without any work on our queue. 2592 */ 2593 if (!packets) { 2594 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; 2595 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) 2596 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; 2597 itr += ring_container->itr & IXGBE_ITR_ADAPTIVE_LATENCY; 2598 goto clear_counts; 2599 } 2600 2601 bytes = ring_container->total_bytes; 2602 2603 /* If packets are less than 4 or bytes are less than 9000 assume 2604 * insufficient data to use bulk rate limiting approach. We are 2605 * likely latency driven. 2606 */ 2607 if (packets < 4 && bytes < 9000) { 2608 itr = IXGBE_ITR_ADAPTIVE_LATENCY; 2609 goto adjust_by_size; 2610 } 2611 2612 /* Between 4 and 48 we can assume that our current interrupt delay 2613 * is only slightly too low. As such we should increase it by a small 2614 * fixed amount. 2615 */ 2616 if (packets < 48) { 2617 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; 2618 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) 2619 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; 2620 goto clear_counts; 2621 } 2622 2623 /* Between 48 and 96 is our "goldilocks" zone where we are working 2624 * out "just right". Just report that our current ITR is good for us. 2625 */ 2626 if (packets < 96) { 2627 itr = q_vector->itr >> 2; 2628 goto clear_counts; 2629 } 2630 2631 /* If packet count is 96 or greater we are likely looking at a slight 2632 * overrun of the delay we want. Try halving our delay to see if that 2633 * will cut the number of packets in half per interrupt. 2634 */ 2635 if (packets < 256) { 2636 itr = q_vector->itr >> 3; 2637 if (itr < IXGBE_ITR_ADAPTIVE_MIN_USECS) 2638 itr = IXGBE_ITR_ADAPTIVE_MIN_USECS; 2639 goto clear_counts; 2640 } 2641 2642 /* The paths below assume we are dealing with a bulk ITR since number 2643 * of packets is 256 or greater. We are just going to have to compute 2644 * a value and try to bring the count under control, though for smaller 2645 * packet sizes there isn't much we can do as NAPI polling will likely 2646 * be kicking in sooner rather than later. 2647 */ 2648 itr = IXGBE_ITR_ADAPTIVE_BULK; 2649 2650 adjust_by_size: 2651 /* If packet counts are 256 or greater we can assume we have a gross 2652 * overestimation of what the rate should be. Instead of trying to fine 2653 * tune it just use the formula below to try and dial in an exact value 2654 * give the current packet size of the frame. 2655 */ 2656 avg_wire_size = bytes / packets; 2657 2658 /* The following is a crude approximation of: 2659 * wmem_default / (size + overhead) = desired_pkts_per_int 2660 * rate / bits_per_byte / (size + ethernet overhead) = pkt_rate 2661 * (desired_pkt_rate / pkt_rate) * usecs_per_sec = ITR value 2662 * 2663 * Assuming wmem_default is 212992 and overhead is 640 bytes per 2664 * packet, (256 skb, 64 headroom, 320 shared info), we can reduce the 2665 * formula down to 2666 * 2667 * (170 * (size + 24)) / (size + 640) = ITR 2668 * 2669 * We first do some math on the packet size and then finally bitshift 2670 * by 8 after rounding up. We also have to account for PCIe link speed 2671 * difference as ITR scales based on this. 2672 */ 2673 if (avg_wire_size <= 60) { 2674 /* Start at 50k ints/sec */ 2675 avg_wire_size = 5120; 2676 } else if (avg_wire_size <= 316) { 2677 /* 50K ints/sec to 16K ints/sec */ 2678 avg_wire_size *= 40; 2679 avg_wire_size += 2720; 2680 } else if (avg_wire_size <= 1084) { 2681 /* 16K ints/sec to 9.2K ints/sec */ 2682 avg_wire_size *= 15; 2683 avg_wire_size += 11452; 2684 } else if (avg_wire_size < 1968) { 2685 /* 9.2K ints/sec to 8K ints/sec */ 2686 avg_wire_size *= 5; 2687 avg_wire_size += 22420; 2688 } else { 2689 /* plateau at a limit of 8K ints/sec */ 2690 avg_wire_size = 32256; 2691 } 2692 2693 /* If we are in low latency mode half our delay which doubles the rate 2694 * to somewhere between 100K to 16K ints/sec 2695 */ 2696 if (itr & IXGBE_ITR_ADAPTIVE_LATENCY) 2697 avg_wire_size >>= 1; 2698 2699 /* Resultant value is 256 times larger than it needs to be. This 2700 * gives us room to adjust the value as needed to either increase 2701 * or decrease the value based on link speeds of 10G, 2.5G, 1G, etc. 2702 * 2703 * Use addition as we have already recorded the new latency flag 2704 * for the ITR value. 2705 */ 2706 switch (q_vector->adapter->link_speed) { 2707 case IXGBE_LINK_SPEED_10GB_FULL: 2708 case IXGBE_LINK_SPEED_100_FULL: 2709 default: 2710 itr += DIV_ROUND_UP(avg_wire_size, 2711 IXGBE_ITR_ADAPTIVE_MIN_INC * 256) * 2712 IXGBE_ITR_ADAPTIVE_MIN_INC; 2713 break; 2714 case IXGBE_LINK_SPEED_2_5GB_FULL: 2715 case IXGBE_LINK_SPEED_1GB_FULL: 2716 case IXGBE_LINK_SPEED_10_FULL: 2717 if (avg_wire_size > 8064) 2718 avg_wire_size = 8064; 2719 itr += DIV_ROUND_UP(avg_wire_size, 2720 IXGBE_ITR_ADAPTIVE_MIN_INC * 64) * 2721 IXGBE_ITR_ADAPTIVE_MIN_INC; 2722 break; 2723 } 2724 2725 clear_counts: 2726 /* write back value */ 2727 ring_container->itr = itr; 2728 2729 /* next update should occur within next jiffy */ 2730 ring_container->next_update = next_update + 1; 2731 2732 ring_container->total_bytes = 0; 2733 ring_container->total_packets = 0; 2734 } 2735 2736 /** 2737 * ixgbe_write_eitr - write EITR register in hardware specific way 2738 * @q_vector: structure containing interrupt and ring information 2739 * 2740 * This function is made to be called by ethtool and by the driver 2741 * when it needs to update EITR registers at runtime. Hardware 2742 * specific quirks/differences are taken care of here. 2743 */ 2744 void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector) 2745 { 2746 struct ixgbe_adapter *adapter = q_vector->adapter; 2747 struct ixgbe_hw *hw = &adapter->hw; 2748 int v_idx = q_vector->v_idx; 2749 u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR; 2750 2751 switch (adapter->hw.mac.type) { 2752 case ixgbe_mac_82598EB: 2753 /* must write high and low 16 bits to reset counter */ 2754 itr_reg |= (itr_reg << 16); 2755 break; 2756 case ixgbe_mac_82599EB: 2757 case ixgbe_mac_X540: 2758 case ixgbe_mac_X550: 2759 case ixgbe_mac_X550EM_x: 2760 case ixgbe_mac_x550em_a: 2761 case ixgbe_mac_e610: 2762 /* 2763 * set the WDIS bit to not clear the timer bits and cause an 2764 * immediate assertion of the interrupt 2765 */ 2766 itr_reg |= IXGBE_EITR_CNT_WDIS; 2767 break; 2768 default: 2769 break; 2770 } 2771 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg); 2772 } 2773 2774 static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector) 2775 { 2776 u32 new_itr; 2777 2778 ixgbe_update_itr(q_vector, &q_vector->tx); 2779 ixgbe_update_itr(q_vector, &q_vector->rx); 2780 2781 /* use the smallest value of new ITR delay calculations */ 2782 new_itr = min(q_vector->rx.itr, q_vector->tx.itr); 2783 2784 /* Clear latency flag if set, shift into correct position */ 2785 new_itr &= ~IXGBE_ITR_ADAPTIVE_LATENCY; 2786 new_itr <<= 2; 2787 2788 if (new_itr != q_vector->itr) { 2789 /* save the algorithm value here */ 2790 q_vector->itr = new_itr; 2791 2792 ixgbe_write_eitr(q_vector); 2793 } 2794 } 2795 2796 /** 2797 * ixgbe_check_overtemp_subtask - check for over temperature 2798 * @adapter: pointer to adapter 2799 **/ 2800 static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter) 2801 { 2802 struct ixgbe_hw *hw = &adapter->hw; 2803 u32 eicr = adapter->interrupt_event; 2804 2805 if (test_bit(__IXGBE_DOWN, &adapter->state)) 2806 return; 2807 2808 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT)) 2809 return; 2810 2811 adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2812 2813 switch (hw->device_id) { 2814 case IXGBE_DEV_ID_82599_T3_LOM: 2815 /* 2816 * Since the warning interrupt is for both ports 2817 * we don't have to check if: 2818 * - This interrupt wasn't for our port. 2819 * - We may have missed the interrupt so always have to 2820 * check if we got a LSC 2821 */ 2822 if (!(eicr & IXGBE_EICR_GPI_SDP0_8259X) && 2823 !(eicr & IXGBE_EICR_LSC)) 2824 return; 2825 2826 if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) { 2827 u32 speed; 2828 bool link_up = false; 2829 2830 hw->mac.ops.check_link(hw, &speed, &link_up, false); 2831 2832 if (link_up) 2833 return; 2834 } 2835 2836 /* Check if this is not due to overtemp */ 2837 if (!hw->phy.ops.check_overtemp(hw)) 2838 return; 2839 2840 break; 2841 case IXGBE_DEV_ID_X550EM_A_1G_T: 2842 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 2843 if (!hw->phy.ops.check_overtemp(hw)) 2844 return; 2845 break; 2846 default: 2847 if (adapter->hw.mac.type >= ixgbe_mac_X540) 2848 return; 2849 if (!(eicr & IXGBE_EICR_GPI_SDP0(hw))) 2850 return; 2851 break; 2852 } 2853 e_crit(drv, "%s\n", ixgbe_overheat_msg); 2854 2855 adapter->interrupt_event = 0; 2856 } 2857 2858 static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr) 2859 { 2860 struct ixgbe_hw *hw = &adapter->hw; 2861 2862 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) && 2863 (eicr & IXGBE_EICR_GPI_SDP1(hw))) { 2864 e_crit(probe, "Fan has stopped, replace the adapter\n"); 2865 /* write to clear the interrupt */ 2866 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); 2867 } 2868 } 2869 2870 static void ixgbe_check_overtemp_event(struct ixgbe_adapter *adapter, u32 eicr) 2871 { 2872 struct ixgbe_hw *hw = &adapter->hw; 2873 2874 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)) 2875 return; 2876 2877 switch (adapter->hw.mac.type) { 2878 case ixgbe_mac_82599EB: 2879 /* 2880 * Need to check link state so complete overtemp check 2881 * on service task 2882 */ 2883 if (((eicr & IXGBE_EICR_GPI_SDP0(hw)) || 2884 (eicr & IXGBE_EICR_LSC)) && 2885 (!test_bit(__IXGBE_DOWN, &adapter->state))) { 2886 adapter->interrupt_event = eicr; 2887 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2888 ixgbe_service_event_schedule(adapter); 2889 return; 2890 } 2891 return; 2892 case ixgbe_mac_x550em_a: 2893 if (eicr & IXGBE_EICR_GPI_SDP0_X550EM_a) { 2894 adapter->interrupt_event = eicr; 2895 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2896 ixgbe_service_event_schedule(adapter); 2897 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 2898 IXGBE_EICR_GPI_SDP0_X550EM_a); 2899 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICR, 2900 IXGBE_EICR_GPI_SDP0_X550EM_a); 2901 } 2902 return; 2903 case ixgbe_mac_X550: 2904 case ixgbe_mac_X540: 2905 if (!(eicr & IXGBE_EICR_TS)) 2906 return; 2907 break; 2908 default: 2909 return; 2910 } 2911 2912 e_crit(drv, "%s\n", ixgbe_overheat_msg); 2913 } 2914 2915 static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw) 2916 { 2917 switch (hw->mac.type) { 2918 case ixgbe_mac_82598EB: 2919 if (hw->phy.type == ixgbe_phy_nl) 2920 return true; 2921 return false; 2922 case ixgbe_mac_82599EB: 2923 case ixgbe_mac_X550EM_x: 2924 case ixgbe_mac_x550em_a: 2925 switch (hw->mac.ops.get_media_type(hw)) { 2926 case ixgbe_media_type_fiber: 2927 case ixgbe_media_type_fiber_qsfp: 2928 return true; 2929 default: 2930 return false; 2931 } 2932 default: 2933 return false; 2934 } 2935 } 2936 2937 static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr) 2938 { 2939 struct ixgbe_hw *hw = &adapter->hw; 2940 u32 eicr_mask = IXGBE_EICR_GPI_SDP2(hw); 2941 2942 if (!ixgbe_is_sfp(hw)) 2943 return; 2944 2945 /* Later MAC's use different SDP */ 2946 if (hw->mac.type >= ixgbe_mac_X540) 2947 eicr_mask = IXGBE_EICR_GPI_SDP0_X540; 2948 2949 if (eicr & eicr_mask) { 2950 /* Clear the interrupt */ 2951 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr_mask); 2952 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2953 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 2954 adapter->sfp_poll_time = 0; 2955 ixgbe_service_event_schedule(adapter); 2956 } 2957 } 2958 2959 if (adapter->hw.mac.type == ixgbe_mac_82599EB && 2960 (eicr & IXGBE_EICR_GPI_SDP1(hw))) { 2961 /* Clear the interrupt */ 2962 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); 2963 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2964 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; 2965 ixgbe_service_event_schedule(adapter); 2966 } 2967 } 2968 } 2969 2970 static void ixgbe_check_lsc(struct ixgbe_adapter *adapter) 2971 { 2972 struct ixgbe_hw *hw = &adapter->hw; 2973 2974 adapter->lsc_int++; 2975 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 2976 adapter->link_check_timeout = jiffies; 2977 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2978 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC); 2979 IXGBE_WRITE_FLUSH(hw); 2980 ixgbe_service_event_schedule(adapter); 2981 } 2982 } 2983 2984 /** 2985 * ixgbe_check_phy_fw_load - check if PHY FW load failed 2986 * @adapter: pointer to adapter structure 2987 * @link_cfg_err: bitmap from the link info structure 2988 * 2989 * Check if external PHY FW load failed and print an error message if it did. 2990 */ 2991 static void ixgbe_check_phy_fw_load(struct ixgbe_adapter *adapter, 2992 u8 link_cfg_err) 2993 { 2994 if (!(link_cfg_err & IXGBE_ACI_LINK_EXTERNAL_PHY_LOAD_FAILURE)) { 2995 adapter->flags2 &= ~IXGBE_FLAG2_PHY_FW_LOAD_FAILED; 2996 return; 2997 } 2998 2999 if (adapter->flags2 & IXGBE_FLAG2_PHY_FW_LOAD_FAILED) 3000 return; 3001 3002 if (link_cfg_err & IXGBE_ACI_LINK_EXTERNAL_PHY_LOAD_FAILURE) { 3003 netdev_err(adapter->netdev, "Device failed to load the FW for the external PHY. Please download and install the latest NVM for your device and try again\n"); 3004 adapter->flags2 |= IXGBE_FLAG2_PHY_FW_LOAD_FAILED; 3005 } 3006 } 3007 3008 /** 3009 * ixgbe_check_module_power - check module power level 3010 * @adapter: pointer to adapter structure 3011 * @link_cfg_err: bitmap from the link info structure 3012 * 3013 * Check module power level returned by a previous call to aci_get_link_info 3014 * and print error messages if module power level is not supported. 3015 */ 3016 static void ixgbe_check_module_power(struct ixgbe_adapter *adapter, 3017 u8 link_cfg_err) 3018 { 3019 /* If module power level is supported, clear the flag. */ 3020 if (!(link_cfg_err & (IXGBE_ACI_LINK_INVAL_MAX_POWER_LIMIT | 3021 IXGBE_ACI_LINK_MODULE_POWER_UNSUPPORTED))) { 3022 adapter->flags2 &= ~IXGBE_FLAG2_MOD_POWER_UNSUPPORTED; 3023 return; 3024 } 3025 3026 /* If IXGBE_FLAG2_MOD_POWER_UNSUPPORTED was previously set and the 3027 * above block didn't clear this bit, there's nothing to do. 3028 */ 3029 if (adapter->flags2 & IXGBE_FLAG2_MOD_POWER_UNSUPPORTED) 3030 return; 3031 3032 if (link_cfg_err & IXGBE_ACI_LINK_INVAL_MAX_POWER_LIMIT) { 3033 netdev_err(adapter->netdev, "The installed module is incompatible with the device's NVM image. Cannot start link.\n"); 3034 adapter->flags2 |= IXGBE_FLAG2_MOD_POWER_UNSUPPORTED; 3035 } else if (link_cfg_err & IXGBE_ACI_LINK_MODULE_POWER_UNSUPPORTED) { 3036 netdev_err(adapter->netdev, "The module's power requirements exceed the device's power supply. Cannot start link.\n"); 3037 adapter->flags2 |= IXGBE_FLAG2_MOD_POWER_UNSUPPORTED; 3038 } 3039 } 3040 3041 /** 3042 * ixgbe_check_link_cfg_err - check if link configuration failed 3043 * @adapter: pointer to adapter structure 3044 * @link_cfg_err: bitmap from the link info structure 3045 * 3046 * Print if any link configuration failure happens due to the value in the 3047 * link_cfg_err parameter in the link info structure. 3048 */ 3049 static void ixgbe_check_link_cfg_err(struct ixgbe_adapter *adapter, 3050 u8 link_cfg_err) 3051 { 3052 ixgbe_check_module_power(adapter, link_cfg_err); 3053 ixgbe_check_phy_fw_load(adapter, link_cfg_err); 3054 } 3055 3056 /** 3057 * ixgbe_process_link_status_event - process the link event 3058 * @adapter: pointer to adapter structure 3059 * @link_up: true if the physical link is up and false if it is down 3060 * @link_speed: current link speed received from the link event 3061 * 3062 * Return: 0 on success or negative value on failure. 3063 */ 3064 static int 3065 ixgbe_process_link_status_event(struct ixgbe_adapter *adapter, bool link_up, 3066 u16 link_speed) 3067 { 3068 struct ixgbe_hw *hw = &adapter->hw; 3069 int status; 3070 3071 /* Update the link info structures and re-enable link events, 3072 * don't bail on failure due to other book keeping needed. 3073 */ 3074 status = ixgbe_update_link_info(hw); 3075 if (status) 3076 e_dev_err("Failed to update link status, err %d aq_err %d\n", 3077 status, hw->aci.last_status); 3078 3079 ixgbe_check_link_cfg_err(adapter, hw->link.link_info.link_cfg_err); 3080 3081 /* Check if the link state is up after updating link info, and treat 3082 * this event as an UP event since the link is actually UP now. 3083 */ 3084 if (hw->link.link_info.link_info & IXGBE_ACI_LINK_UP) 3085 link_up = true; 3086 3087 /* Turn off PHY if media was removed. */ 3088 if (!(adapter->flags2 & IXGBE_FLAG2_NO_MEDIA) && 3089 !(hw->link.link_info.link_info & IXGBE_ACI_MEDIA_AVAILABLE)) 3090 adapter->flags2 |= IXGBE_FLAG2_NO_MEDIA; 3091 3092 if (link_up == adapter->link_up && 3093 link_up == netif_carrier_ok(adapter->netdev) && 3094 link_speed == adapter->link_speed) 3095 return 0; 3096 3097 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 3098 adapter->link_check_timeout = jiffies; 3099 ixgbe_watchdog_update_link(adapter); 3100 3101 if (link_up) 3102 ixgbe_watchdog_link_is_up(adapter); 3103 else 3104 ixgbe_watchdog_link_is_down(adapter); 3105 3106 return 0; 3107 } 3108 3109 /** 3110 * ixgbe_handle_link_status_event - handle link status event via ACI 3111 * @adapter: pointer to adapter structure 3112 * @e: event structure containing link status info 3113 */ 3114 static void 3115 ixgbe_handle_link_status_event(struct ixgbe_adapter *adapter, 3116 struct ixgbe_aci_event *e) 3117 { 3118 struct ixgbe_aci_cmd_get_link_status_data *link_data; 3119 u16 link_speed; 3120 bool link_up; 3121 3122 link_data = (struct ixgbe_aci_cmd_get_link_status_data *)e->msg_buf; 3123 3124 link_up = !!(link_data->link_info & IXGBE_ACI_LINK_UP); 3125 link_speed = le16_to_cpu(link_data->link_speed); 3126 3127 if (ixgbe_process_link_status_event(adapter, link_up, link_speed)) 3128 e_dev_warn("Could not process link status event"); 3129 } 3130 3131 /** 3132 * ixgbe_schedule_fw_event - schedule Firmware event 3133 * @adapter: pointer to the adapter structure 3134 * 3135 * If the adapter is not in down, removing or resetting state, 3136 * an event is scheduled. 3137 */ 3138 static void ixgbe_schedule_fw_event(struct ixgbe_adapter *adapter) 3139 { 3140 if (!test_bit(__IXGBE_DOWN, &adapter->state) && 3141 !test_bit(__IXGBE_REMOVING, &adapter->state) && 3142 !test_bit(__IXGBE_RESETTING, &adapter->state)) { 3143 adapter->flags2 |= IXGBE_FLAG2_FW_ASYNC_EVENT; 3144 ixgbe_service_event_schedule(adapter); 3145 } 3146 } 3147 3148 /** 3149 * ixgbe_aci_event_cleanup - release msg_buf memory 3150 * @event: pointer to the event holding msg_buf to be released 3151 * 3152 * Clean memory allocated for event's msg_buf. Implements auto memory cleanup. 3153 */ 3154 static void ixgbe_aci_event_cleanup(struct ixgbe_aci_event *event) 3155 { 3156 kfree(event->msg_buf); 3157 } 3158 3159 /** 3160 * ixgbe_handle_fw_event - handle Firmware event 3161 * @adapter: pointer to the adapter structure 3162 * 3163 * Obtain an event from the ACI and then and then process it according to the 3164 * type of the event and the opcode. 3165 */ 3166 static void ixgbe_handle_fw_event(struct ixgbe_adapter *adapter) 3167 { 3168 struct ixgbe_aci_event event __cleanup(ixgbe_aci_event_cleanup); 3169 struct ixgbe_hw *hw = &adapter->hw; 3170 bool pending = false; 3171 int err; 3172 3173 if (adapter->flags2 & IXGBE_FLAG2_FW_ASYNC_EVENT) 3174 adapter->flags2 &= ~IXGBE_FLAG2_FW_ASYNC_EVENT; 3175 event.buf_len = IXGBE_ACI_MAX_BUFFER_SIZE; 3176 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); 3177 if (!event.msg_buf) 3178 return; 3179 3180 do { 3181 err = ixgbe_aci_get_event(hw, &event, &pending); 3182 if (err) 3183 break; 3184 3185 switch (le16_to_cpu(event.desc.opcode)) { 3186 case ixgbe_aci_opc_get_link_status: 3187 ixgbe_handle_link_status_event(adapter, &event); 3188 break; 3189 case ixgbe_aci_opc_temp_tca_event: 3190 e_crit(drv, "%s\n", ixgbe_overheat_msg); 3191 ixgbe_down(adapter); 3192 break; 3193 default: 3194 e_warn(hw, "unknown FW async event captured\n"); 3195 break; 3196 } 3197 } while (pending); 3198 } 3199 3200 static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter, 3201 u64 qmask) 3202 { 3203 struct ixgbe_hw *hw = &adapter->hw; 3204 u32 mask; 3205 3206 switch (hw->mac.type) { 3207 case ixgbe_mac_82598EB: 3208 mask = (IXGBE_EIMS_RTX_QUEUE & qmask); 3209 IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask); 3210 break; 3211 case ixgbe_mac_82599EB: 3212 case ixgbe_mac_X540: 3213 case ixgbe_mac_X550: 3214 case ixgbe_mac_X550EM_x: 3215 case ixgbe_mac_x550em_a: 3216 case ixgbe_mac_e610: 3217 mask = (qmask & 0xFFFFFFFF); 3218 if (mask) 3219 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask); 3220 mask = (qmask >> 32); 3221 if (mask) 3222 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask); 3223 break; 3224 default: 3225 break; 3226 } 3227 /* skip the flush */ 3228 } 3229 3230 /** 3231 * ixgbe_irq_enable - Enable default interrupt generation settings 3232 * @adapter: board private structure 3233 * @queues: enable irqs for queues 3234 * @flush: flush register write 3235 **/ 3236 static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues, 3237 bool flush) 3238 { 3239 struct ixgbe_hw *hw = &adapter->hw; 3240 u32 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE); 3241 3242 /* don't reenable LSC while waiting for link */ 3243 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) 3244 mask &= ~IXGBE_EIMS_LSC; 3245 3246 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) 3247 switch (adapter->hw.mac.type) { 3248 case ixgbe_mac_82599EB: 3249 mask |= IXGBE_EIMS_GPI_SDP0(hw); 3250 break; 3251 case ixgbe_mac_X540: 3252 case ixgbe_mac_X550: 3253 case ixgbe_mac_X550EM_x: 3254 case ixgbe_mac_x550em_a: 3255 mask |= IXGBE_EIMS_TS; 3256 break; 3257 default: 3258 break; 3259 } 3260 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) 3261 mask |= IXGBE_EIMS_GPI_SDP1(hw); 3262 switch (adapter->hw.mac.type) { 3263 case ixgbe_mac_82599EB: 3264 mask |= IXGBE_EIMS_GPI_SDP1(hw); 3265 mask |= IXGBE_EIMS_GPI_SDP2(hw); 3266 fallthrough; 3267 case ixgbe_mac_X540: 3268 case ixgbe_mac_X550: 3269 case ixgbe_mac_X550EM_x: 3270 case ixgbe_mac_e610: 3271 mask |= IXGBE_EIMS_FW_EVENT; 3272 fallthrough; 3273 case ixgbe_mac_x550em_a: 3274 if (adapter->hw.device_id == IXGBE_DEV_ID_X550EM_X_SFP || 3275 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP || 3276 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP_N) 3277 mask |= IXGBE_EIMS_GPI_SDP0(&adapter->hw); 3278 if (adapter->hw.phy.type == ixgbe_phy_x550em_ext_t) 3279 mask |= IXGBE_EICR_GPI_SDP0_X540; 3280 mask |= IXGBE_EIMS_ECC; 3281 mask |= IXGBE_EIMS_MAILBOX; 3282 break; 3283 default: 3284 break; 3285 } 3286 3287 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) && 3288 !(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT)) 3289 mask |= IXGBE_EIMS_FLOW_DIR; 3290 3291 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); 3292 if (queues) 3293 ixgbe_irq_enable_queues(adapter, ~0); 3294 if (flush) 3295 IXGBE_WRITE_FLUSH(&adapter->hw); 3296 } 3297 3298 static irqreturn_t ixgbe_msix_other(int irq, void *data) 3299 { 3300 struct ixgbe_adapter *adapter = data; 3301 struct ixgbe_hw *hw = &adapter->hw; 3302 u32 eicr; 3303 3304 /* 3305 * Workaround for Silicon errata. Use clear-by-write instead 3306 * of clear-by-read. Reading with EICS will return the 3307 * interrupt causes without clearing, which later be done 3308 * with the write to EICR. 3309 */ 3310 eicr = IXGBE_READ_REG(hw, IXGBE_EICS); 3311 3312 /* The lower 16bits of the EICR register are for the queue interrupts 3313 * which should be masked here in order to not accidentally clear them if 3314 * the bits are high when ixgbe_msix_other is called. There is a race 3315 * condition otherwise which results in possible performance loss 3316 * especially if the ixgbe_msix_other interrupt is triggering 3317 * consistently (as it would when PPS is turned on for the X540 device) 3318 */ 3319 eicr &= 0xFFFF0000; 3320 3321 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr); 3322 3323 if (eicr & IXGBE_EICR_LSC) 3324 ixgbe_check_lsc(adapter); 3325 3326 if (eicr & IXGBE_EICR_MAILBOX) 3327 ixgbe_msg_task(adapter); 3328 3329 if (eicr & IXGBE_EICR_FW_EVENT) 3330 ixgbe_schedule_fw_event(adapter); 3331 3332 switch (hw->mac.type) { 3333 case ixgbe_mac_82599EB: 3334 case ixgbe_mac_X540: 3335 case ixgbe_mac_X550: 3336 case ixgbe_mac_X550EM_x: 3337 case ixgbe_mac_x550em_a: 3338 case ixgbe_mac_e610: 3339 if (hw->phy.type == ixgbe_phy_x550em_ext_t && 3340 (eicr & IXGBE_EICR_GPI_SDP0_X540)) { 3341 adapter->flags2 |= IXGBE_FLAG2_PHY_INTERRUPT; 3342 ixgbe_service_event_schedule(adapter); 3343 IXGBE_WRITE_REG(hw, IXGBE_EICR, 3344 IXGBE_EICR_GPI_SDP0_X540); 3345 } 3346 if (eicr & IXGBE_EICR_ECC) { 3347 e_info(link, "Received ECC Err, initiating reset\n"); 3348 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 3349 ixgbe_service_event_schedule(adapter); 3350 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); 3351 } 3352 /* Handle Flow Director Full threshold interrupt */ 3353 if (eicr & IXGBE_EICR_FLOW_DIR) { 3354 int reinit_count = 0; 3355 int i; 3356 for (i = 0; i < adapter->num_tx_queues; i++) { 3357 struct ixgbe_ring *ring = adapter->tx_ring[i]; 3358 if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE, 3359 &ring->state)) 3360 reinit_count++; 3361 } 3362 if (reinit_count) { 3363 /* no more flow director interrupts until after init */ 3364 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR); 3365 adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 3366 ixgbe_service_event_schedule(adapter); 3367 } 3368 } 3369 ixgbe_check_sfp_event(adapter, eicr); 3370 ixgbe_check_overtemp_event(adapter, eicr); 3371 break; 3372 default: 3373 break; 3374 } 3375 3376 ixgbe_check_fan_failure(adapter, eicr); 3377 3378 if (unlikely(eicr & IXGBE_EICR_TIMESYNC)) 3379 ixgbe_ptp_check_pps_event(adapter); 3380 3381 /* re-enable the original interrupt state, no lsc, no queues */ 3382 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3383 ixgbe_irq_enable(adapter, false, false); 3384 3385 return IRQ_HANDLED; 3386 } 3387 3388 static irqreturn_t ixgbe_msix_clean_rings(int irq, void *data) 3389 { 3390 struct ixgbe_q_vector *q_vector = data; 3391 3392 /* EIAM disabled interrupts (on this vector) for us */ 3393 3394 if (q_vector->rx.ring || q_vector->tx.ring) 3395 napi_schedule_irqoff(&q_vector->napi); 3396 3397 return IRQ_HANDLED; 3398 } 3399 3400 /** 3401 * ixgbe_poll - NAPI Rx polling callback 3402 * @napi: structure for representing this polling device 3403 * @budget: how many packets driver is allowed to clean 3404 * 3405 * This function is used for legacy and MSI, NAPI mode 3406 **/ 3407 int ixgbe_poll(struct napi_struct *napi, int budget) 3408 { 3409 struct ixgbe_q_vector *q_vector = 3410 container_of(napi, struct ixgbe_q_vector, napi); 3411 struct ixgbe_adapter *adapter = q_vector->adapter; 3412 struct ixgbe_ring *ring; 3413 int per_ring_budget, work_done = 0; 3414 bool clean_complete = true; 3415 3416 #ifdef CONFIG_IXGBE_DCA 3417 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 3418 ixgbe_update_dca(q_vector); 3419 #endif 3420 3421 ixgbe_for_each_ring(ring, q_vector->tx) { 3422 bool wd = ring->xsk_pool ? 3423 ixgbe_clean_xdp_tx_irq(q_vector, ring, budget) : 3424 ixgbe_clean_tx_irq(q_vector, ring, budget); 3425 3426 if (!wd) 3427 clean_complete = false; 3428 } 3429 3430 /* Exit if we are called by netpoll */ 3431 if (budget <= 0) 3432 return budget; 3433 3434 /* attempt to distribute budget to each queue fairly, but don't allow 3435 * the budget to go below 1 because we'll exit polling */ 3436 if (q_vector->rx.count > 1) 3437 per_ring_budget = max(budget/q_vector->rx.count, 1); 3438 else 3439 per_ring_budget = budget; 3440 3441 ixgbe_for_each_ring(ring, q_vector->rx) { 3442 int cleaned = ring->xsk_pool ? 3443 ixgbe_clean_rx_irq_zc(q_vector, ring, 3444 per_ring_budget) : 3445 ixgbe_clean_rx_irq(q_vector, ring, 3446 per_ring_budget); 3447 3448 work_done += cleaned; 3449 if (cleaned >= per_ring_budget) 3450 clean_complete = false; 3451 } 3452 3453 /* If all work not completed, return budget and keep polling */ 3454 if (!clean_complete) 3455 return budget; 3456 3457 /* all work done, exit the polling mode */ 3458 if (likely(napi_complete_done(napi, work_done))) { 3459 if (adapter->rx_itr_setting & 1) 3460 ixgbe_set_itr(q_vector); 3461 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3462 ixgbe_irq_enable_queues(adapter, 3463 BIT_ULL(q_vector->v_idx)); 3464 } 3465 3466 return min(work_done, budget - 1); 3467 } 3468 3469 /** 3470 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts 3471 * @adapter: board private structure 3472 * 3473 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests 3474 * interrupts from the kernel. 3475 **/ 3476 static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter) 3477 { 3478 struct net_device *netdev = adapter->netdev; 3479 unsigned int ri = 0, ti = 0; 3480 int vector, err; 3481 3482 for (vector = 0; vector < adapter->num_q_vectors; vector++) { 3483 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector]; 3484 struct msix_entry *entry = &adapter->msix_entries[vector]; 3485 3486 if (q_vector->tx.ring && q_vector->rx.ring) { 3487 snprintf(q_vector->name, sizeof(q_vector->name), 3488 "%s-TxRx-%u", netdev->name, ri++); 3489 ti++; 3490 } else if (q_vector->rx.ring) { 3491 snprintf(q_vector->name, sizeof(q_vector->name), 3492 "%s-rx-%u", netdev->name, ri++); 3493 } else if (q_vector->tx.ring) { 3494 snprintf(q_vector->name, sizeof(q_vector->name), 3495 "%s-tx-%u", netdev->name, ti++); 3496 } else { 3497 /* skip this unused q_vector */ 3498 continue; 3499 } 3500 err = request_irq(entry->vector, &ixgbe_msix_clean_rings, 0, 3501 q_vector->name, q_vector); 3502 if (err) { 3503 e_err(probe, "request_irq failed for MSIX interrupt " 3504 "Error: %d\n", err); 3505 goto free_queue_irqs; 3506 } 3507 /* If Flow Director is enabled, set interrupt affinity */ 3508 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 3509 /* assign the mask for this irq */ 3510 irq_update_affinity_hint(entry->vector, 3511 &q_vector->affinity_mask); 3512 } 3513 } 3514 3515 err = request_irq(adapter->msix_entries[vector].vector, 3516 ixgbe_msix_other, 0, netdev->name, adapter); 3517 if (err) { 3518 e_err(probe, "request_irq for msix_other failed: %d\n", err); 3519 goto free_queue_irqs; 3520 } 3521 3522 return 0; 3523 3524 free_queue_irqs: 3525 while (vector) { 3526 vector--; 3527 irq_update_affinity_hint(adapter->msix_entries[vector].vector, 3528 NULL); 3529 free_irq(adapter->msix_entries[vector].vector, 3530 adapter->q_vector[vector]); 3531 } 3532 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; 3533 pci_disable_msix(adapter->pdev); 3534 kfree(adapter->msix_entries); 3535 adapter->msix_entries = NULL; 3536 return err; 3537 } 3538 3539 /** 3540 * ixgbe_intr - legacy mode Interrupt Handler 3541 * @irq: interrupt number 3542 * @data: pointer to a network interface device structure 3543 **/ 3544 static irqreturn_t ixgbe_intr(int irq, void *data) 3545 { 3546 struct ixgbe_adapter *adapter = data; 3547 struct ixgbe_hw *hw = &adapter->hw; 3548 struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; 3549 u32 eicr; 3550 3551 /* 3552 * Workaround for silicon errata #26 on 82598. Mask the interrupt 3553 * before the read of EICR. 3554 */ 3555 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); 3556 3557 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read 3558 * therefore no explicit interrupt disable is necessary */ 3559 eicr = IXGBE_READ_REG(hw, IXGBE_EICR); 3560 if (!eicr) { 3561 /* 3562 * shared interrupt alert! 3563 * make sure interrupts are enabled because the read will 3564 * have disabled interrupts due to EIAM 3565 * finish the workaround of silicon errata on 82598. Unmask 3566 * the interrupt that we masked before the EICR read. 3567 */ 3568 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3569 ixgbe_irq_enable(adapter, true, true); 3570 return IRQ_NONE; /* Not our interrupt */ 3571 } 3572 3573 if (eicr & IXGBE_EICR_LSC) 3574 ixgbe_check_lsc(adapter); 3575 3576 if (eicr & IXGBE_EICR_FW_EVENT) 3577 ixgbe_schedule_fw_event(adapter); 3578 3579 switch (hw->mac.type) { 3580 case ixgbe_mac_82599EB: 3581 ixgbe_check_sfp_event(adapter, eicr); 3582 fallthrough; 3583 case ixgbe_mac_X540: 3584 case ixgbe_mac_X550: 3585 case ixgbe_mac_X550EM_x: 3586 case ixgbe_mac_x550em_a: 3587 case ixgbe_mac_e610: 3588 if (eicr & IXGBE_EICR_ECC) { 3589 e_info(link, "Received ECC Err, initiating reset\n"); 3590 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 3591 ixgbe_service_event_schedule(adapter); 3592 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); 3593 } 3594 ixgbe_check_overtemp_event(adapter, eicr); 3595 break; 3596 default: 3597 break; 3598 } 3599 3600 ixgbe_check_fan_failure(adapter, eicr); 3601 if (unlikely(eicr & IXGBE_EICR_TIMESYNC)) 3602 ixgbe_ptp_check_pps_event(adapter); 3603 3604 /* would disable interrupts here but EIAM disabled it */ 3605 napi_schedule_irqoff(&q_vector->napi); 3606 3607 /* 3608 * re-enable link(maybe) and non-queue interrupts, no flush. 3609 * ixgbe_poll will re-enable the queue interrupts 3610 */ 3611 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3612 ixgbe_irq_enable(adapter, false, false); 3613 3614 return IRQ_HANDLED; 3615 } 3616 3617 /** 3618 * ixgbe_request_irq - initialize interrupts 3619 * @adapter: board private structure 3620 * 3621 * Attempts to configure interrupts using the best available 3622 * capabilities of the hardware and kernel. 3623 **/ 3624 static int ixgbe_request_irq(struct ixgbe_adapter *adapter) 3625 { 3626 struct net_device *netdev = adapter->netdev; 3627 int err; 3628 3629 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) 3630 err = ixgbe_request_msix_irqs(adapter); 3631 else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) 3632 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0, 3633 netdev->name, adapter); 3634 else 3635 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED, 3636 netdev->name, adapter); 3637 3638 if (err) 3639 e_err(probe, "request_irq failed, Error %d\n", err); 3640 3641 return err; 3642 } 3643 3644 static void ixgbe_free_irq(struct ixgbe_adapter *adapter) 3645 { 3646 int vector; 3647 3648 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { 3649 free_irq(adapter->pdev->irq, adapter); 3650 return; 3651 } 3652 3653 if (!adapter->msix_entries) 3654 return; 3655 3656 for (vector = 0; vector < adapter->num_q_vectors; vector++) { 3657 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector]; 3658 struct msix_entry *entry = &adapter->msix_entries[vector]; 3659 3660 /* free only the irqs that were actually requested */ 3661 if (!q_vector->rx.ring && !q_vector->tx.ring) 3662 continue; 3663 3664 /* clear the affinity_mask in the IRQ descriptor */ 3665 irq_update_affinity_hint(entry->vector, NULL); 3666 3667 free_irq(entry->vector, q_vector); 3668 } 3669 3670 free_irq(adapter->msix_entries[vector].vector, adapter); 3671 } 3672 3673 /** 3674 * ixgbe_irq_disable - Mask off interrupt generation on the NIC 3675 * @adapter: board private structure 3676 **/ 3677 static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) 3678 { 3679 switch (adapter->hw.mac.type) { 3680 case ixgbe_mac_82598EB: 3681 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); 3682 break; 3683 case ixgbe_mac_82599EB: 3684 case ixgbe_mac_X540: 3685 case ixgbe_mac_X550: 3686 case ixgbe_mac_X550EM_x: 3687 case ixgbe_mac_x550em_a: 3688 case ixgbe_mac_e610: 3689 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000); 3690 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0); 3691 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0); 3692 break; 3693 default: 3694 break; 3695 } 3696 IXGBE_WRITE_FLUSH(&adapter->hw); 3697 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { 3698 int vector; 3699 3700 for (vector = 0; vector < adapter->num_q_vectors; vector++) 3701 synchronize_irq(adapter->msix_entries[vector].vector); 3702 3703 synchronize_irq(adapter->msix_entries[vector++].vector); 3704 } else { 3705 synchronize_irq(adapter->pdev->irq); 3706 } 3707 } 3708 3709 /** 3710 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts 3711 * @adapter: board private structure 3712 * 3713 **/ 3714 static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) 3715 { 3716 struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; 3717 3718 ixgbe_write_eitr(q_vector); 3719 3720 ixgbe_set_ivar(adapter, 0, 0, 0); 3721 ixgbe_set_ivar(adapter, 1, 0, 0); 3722 3723 e_info(hw, "Legacy interrupt IVAR setup done\n"); 3724 } 3725 3726 /** 3727 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset 3728 * @adapter: board private structure 3729 * @ring: structure containing ring specific data 3730 * 3731 * Configure the Tx descriptor ring after a reset. 3732 **/ 3733 void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter, 3734 struct ixgbe_ring *ring) 3735 { 3736 struct ixgbe_hw *hw = &adapter->hw; 3737 u64 tdba = ring->dma; 3738 int wait_loop = 10; 3739 u32 txdctl = IXGBE_TXDCTL_ENABLE; 3740 u8 reg_idx = ring->reg_idx; 3741 3742 ring->xsk_pool = NULL; 3743 if (ring_is_xdp(ring)) 3744 ring->xsk_pool = ixgbe_xsk_pool(adapter, ring); 3745 3746 /* disable queue to avoid issues while updating state */ 3747 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), 0); 3748 IXGBE_WRITE_FLUSH(hw); 3749 3750 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx), 3751 (tdba & DMA_BIT_MASK(32))); 3752 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32)); 3753 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx), 3754 ring->count * sizeof(union ixgbe_adv_tx_desc)); 3755 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0); 3756 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0); 3757 ring->tail = adapter->io_addr + IXGBE_TDT(reg_idx); 3758 3759 /* 3760 * set WTHRESH to encourage burst writeback, it should not be set 3761 * higher than 1 when: 3762 * - ITR is 0 as it could cause false TX hangs 3763 * - ITR is set to > 100k int/sec and BQL is enabled 3764 * 3765 * In order to avoid issues WTHRESH + PTHRESH should always be equal 3766 * to or less than the number of on chip descriptors, which is 3767 * currently 40. 3768 */ 3769 if (!ring->q_vector || (ring->q_vector->itr < IXGBE_100K_ITR)) 3770 txdctl |= 1u << 16; /* WTHRESH = 1 */ 3771 else 3772 txdctl |= 8u << 16; /* WTHRESH = 8 */ 3773 3774 /* 3775 * Setting PTHRESH to 32 both improves performance 3776 * and avoids a TX hang with DFP enabled 3777 */ 3778 txdctl |= (1u << 8) | /* HTHRESH = 1 */ 3779 32; /* PTHRESH = 32 */ 3780 3781 /* reinitialize flowdirector state */ 3782 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 3783 ring->atr_sample_rate = adapter->atr_sample_rate; 3784 ring->atr_count = 0; 3785 set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state); 3786 } else { 3787 ring->atr_sample_rate = 0; 3788 } 3789 3790 /* initialize XPS */ 3791 if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE, &ring->state)) { 3792 struct ixgbe_q_vector *q_vector = ring->q_vector; 3793 3794 if (q_vector) 3795 netif_set_xps_queue(ring->netdev, 3796 &q_vector->affinity_mask, 3797 ring->queue_index); 3798 } 3799 3800 clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state); 3801 3802 /* reinitialize tx_buffer_info */ 3803 memset(ring->tx_buffer_info, 0, 3804 sizeof(struct ixgbe_tx_buffer) * ring->count); 3805 3806 /* enable queue */ 3807 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl); 3808 3809 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */ 3810 if (hw->mac.type == ixgbe_mac_82598EB && 3811 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 3812 return; 3813 3814 /* poll to verify queue is enabled */ 3815 do { 3816 usleep_range(1000, 2000); 3817 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 3818 } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE)); 3819 if (!wait_loop) 3820 hw_dbg(hw, "Could not enable Tx Queue %d\n", reg_idx); 3821 } 3822 3823 static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter) 3824 { 3825 struct ixgbe_hw *hw = &adapter->hw; 3826 u32 rttdcs, mtqc; 3827 u8 tcs = adapter->hw_tcs; 3828 3829 if (hw->mac.type == ixgbe_mac_82598EB) 3830 return; 3831 3832 /* disable the arbiter while setting MTQC */ 3833 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS); 3834 rttdcs |= IXGBE_RTTDCS_ARBDIS; 3835 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); 3836 3837 /* set transmit pool layout */ 3838 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 3839 mtqc = IXGBE_MTQC_VT_ENA; 3840 if (tcs > 4) 3841 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; 3842 else if (tcs > 1) 3843 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; 3844 else if (adapter->ring_feature[RING_F_VMDQ].mask == 3845 IXGBE_82599_VMDQ_4Q_MASK) 3846 mtqc |= IXGBE_MTQC_32VF; 3847 else 3848 mtqc |= IXGBE_MTQC_64VF; 3849 } else { 3850 if (tcs > 4) { 3851 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; 3852 } else if (tcs > 1) { 3853 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; 3854 } else { 3855 u8 max_txq = adapter->num_tx_queues + 3856 adapter->num_xdp_queues; 3857 if (max_txq > 63) 3858 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; 3859 else 3860 mtqc = IXGBE_MTQC_64Q_1PB; 3861 } 3862 } 3863 3864 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc); 3865 3866 /* Enable Security TX Buffer IFG for multiple pb */ 3867 if (tcs) { 3868 u32 sectx = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG); 3869 sectx |= IXGBE_SECTX_DCB; 3870 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, sectx); 3871 } 3872 3873 /* re-enable the arbiter */ 3874 rttdcs &= ~IXGBE_RTTDCS_ARBDIS; 3875 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); 3876 } 3877 3878 /** 3879 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset 3880 * @adapter: board private structure 3881 * 3882 * Configure the Tx unit of the MAC after a reset. 3883 **/ 3884 static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) 3885 { 3886 struct ixgbe_hw *hw = &adapter->hw; 3887 u32 dmatxctl; 3888 u32 i; 3889 3890 ixgbe_setup_mtqc(adapter); 3891 3892 if (hw->mac.type != ixgbe_mac_82598EB) { 3893 /* DMATXCTL.EN must be before Tx queues are enabled */ 3894 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL); 3895 dmatxctl |= IXGBE_DMATXCTL_TE; 3896 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl); 3897 } 3898 3899 /* Setup the HW Tx Head and Tail descriptor pointers */ 3900 for (i = 0; i < adapter->num_tx_queues; i++) 3901 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]); 3902 for (i = 0; i < adapter->num_xdp_queues; i++) 3903 ixgbe_configure_tx_ring(adapter, adapter->xdp_ring[i]); 3904 } 3905 3906 static void ixgbe_enable_rx_drop(struct ixgbe_adapter *adapter, 3907 struct ixgbe_ring *ring) 3908 { 3909 struct ixgbe_hw *hw = &adapter->hw; 3910 u8 reg_idx = ring->reg_idx; 3911 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx)); 3912 3913 srrctl |= IXGBE_SRRCTL_DROP_EN; 3914 3915 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 3916 } 3917 3918 static void ixgbe_disable_rx_drop(struct ixgbe_adapter *adapter, 3919 struct ixgbe_ring *ring) 3920 { 3921 struct ixgbe_hw *hw = &adapter->hw; 3922 u8 reg_idx = ring->reg_idx; 3923 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx)); 3924 3925 srrctl &= ~IXGBE_SRRCTL_DROP_EN; 3926 3927 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 3928 } 3929 3930 #ifdef CONFIG_IXGBE_DCB 3931 void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter) 3932 #else 3933 static void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter) 3934 #endif 3935 { 3936 int i; 3937 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 3938 3939 if (adapter->ixgbe_ieee_pfc) 3940 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 3941 3942 /* 3943 * We should set the drop enable bit if: 3944 * SR-IOV is enabled 3945 * or 3946 * Number of Rx queues > 1 and flow control is disabled 3947 * 3948 * This allows us to avoid head of line blocking for security 3949 * and performance reasons. 3950 */ 3951 if (adapter->num_vfs || (adapter->num_rx_queues > 1 && 3952 !(adapter->hw.fc.current_mode & ixgbe_fc_tx_pause) && !pfc_en)) { 3953 for (i = 0; i < adapter->num_rx_queues; i++) 3954 ixgbe_enable_rx_drop(adapter, adapter->rx_ring[i]); 3955 } else { 3956 for (i = 0; i < adapter->num_rx_queues; i++) 3957 ixgbe_disable_rx_drop(adapter, adapter->rx_ring[i]); 3958 } 3959 } 3960 3961 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 3962 3963 static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, 3964 struct ixgbe_ring *rx_ring) 3965 { 3966 struct ixgbe_hw *hw = &adapter->hw; 3967 u32 srrctl; 3968 u8 reg_idx = rx_ring->reg_idx; 3969 3970 if (hw->mac.type == ixgbe_mac_82598EB) { 3971 u16 mask = adapter->ring_feature[RING_F_RSS].mask; 3972 3973 /* 3974 * if VMDq is not active we must program one srrctl register 3975 * per RSS queue since we have enabled RDRXCTL.MVMEN 3976 */ 3977 reg_idx &= mask; 3978 } 3979 3980 /* configure header buffer length, needed for RSC */ 3981 srrctl = IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT; 3982 3983 /* configure the packet buffer length */ 3984 if (rx_ring->xsk_pool) { 3985 u32 xsk_buf_len = xsk_pool_get_rx_frame_size(rx_ring->xsk_pool); 3986 3987 /* If the MAC support setting RXDCTL.RLPML, the 3988 * SRRCTL[n].BSIZEPKT is set to PAGE_SIZE and 3989 * RXDCTL.RLPML is set to the actual UMEM buffer 3990 * size. If not, then we are stuck with a 1k buffer 3991 * size resolution. In this case frames larger than 3992 * the UMEM buffer size viewed in a 1k resolution will 3993 * be dropped. 3994 */ 3995 if (hw->mac.type != ixgbe_mac_82599EB) 3996 srrctl |= PAGE_SIZE >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 3997 else 3998 srrctl |= xsk_buf_len >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 3999 } else if (test_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state)) { 4000 srrctl |= IXGBE_RXBUFFER_3K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 4001 } else { 4002 srrctl |= IXGBE_RXBUFFER_2K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 4003 } 4004 4005 /* configure descriptor type */ 4006 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; 4007 4008 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 4009 } 4010 4011 /** 4012 * ixgbe_rss_indir_tbl_entries - Return RSS indirection table entries 4013 * @adapter: device handle 4014 * 4015 * - 82598/82599/X540: 128 4016 * - X550(non-SRIOV mode): 512 4017 * - X550(SRIOV mode): 64 4018 */ 4019 u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter) 4020 { 4021 if (adapter->hw.mac.type < ixgbe_mac_X550) 4022 return 128; 4023 else if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 4024 return 64; 4025 else 4026 return 512; 4027 } 4028 4029 /** 4030 * ixgbe_store_key - Write the RSS key to HW 4031 * @adapter: device handle 4032 * 4033 * Write the RSS key stored in adapter.rss_key to HW. 4034 */ 4035 void ixgbe_store_key(struct ixgbe_adapter *adapter) 4036 { 4037 struct ixgbe_hw *hw = &adapter->hw; 4038 int i; 4039 4040 for (i = 0; i < 10; i++) 4041 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), adapter->rss_key[i]); 4042 } 4043 4044 /** 4045 * ixgbe_init_rss_key - Initialize adapter RSS key 4046 * @adapter: device handle 4047 * 4048 * Allocates and initializes the RSS key if it is not allocated. 4049 **/ 4050 static inline int ixgbe_init_rss_key(struct ixgbe_adapter *adapter) 4051 { 4052 u32 *rss_key; 4053 4054 if (!adapter->rss_key) { 4055 rss_key = kzalloc(IXGBE_RSS_KEY_SIZE, GFP_KERNEL); 4056 if (unlikely(!rss_key)) 4057 return -ENOMEM; 4058 4059 netdev_rss_key_fill(rss_key, IXGBE_RSS_KEY_SIZE); 4060 adapter->rss_key = rss_key; 4061 } 4062 4063 return 0; 4064 } 4065 4066 /** 4067 * ixgbe_store_reta - Write the RETA table to HW 4068 * @adapter: device handle 4069 * 4070 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW. 4071 */ 4072 void ixgbe_store_reta(struct ixgbe_adapter *adapter) 4073 { 4074 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 4075 struct ixgbe_hw *hw = &adapter->hw; 4076 u32 reta = 0; 4077 u32 indices_multi; 4078 u8 *indir_tbl = adapter->rss_indir_tbl; 4079 4080 /* Fill out the redirection table as follows: 4081 * - 82598: 8 bit wide entries containing pair of 4 bit RSS 4082 * indices. 4083 * - 82599/X540: 8 bit wide entries containing 4 bit RSS index 4084 * - X550: 8 bit wide entries containing 6 bit RSS index 4085 */ 4086 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 4087 indices_multi = 0x11; 4088 else 4089 indices_multi = 0x1; 4090 4091 /* Write redirection table to HW */ 4092 for (i = 0; i < reta_entries; i++) { 4093 reta |= indices_multi * indir_tbl[i] << (i & 0x3) * 8; 4094 if ((i & 3) == 3) { 4095 if (i < 128) 4096 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); 4097 else 4098 IXGBE_WRITE_REG(hw, IXGBE_ERETA((i >> 2) - 32), 4099 reta); 4100 reta = 0; 4101 } 4102 } 4103 } 4104 4105 /** 4106 * ixgbe_store_vfreta - Write the RETA table to HW (x550 devices in SRIOV mode) 4107 * @adapter: device handle 4108 * 4109 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW. 4110 */ 4111 static void ixgbe_store_vfreta(struct ixgbe_adapter *adapter) 4112 { 4113 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 4114 struct ixgbe_hw *hw = &adapter->hw; 4115 u32 vfreta = 0; 4116 4117 /* Write redirection table to HW */ 4118 for (i = 0; i < reta_entries; i++) { 4119 u16 pool = adapter->num_rx_pools; 4120 4121 vfreta |= (u32)adapter->rss_indir_tbl[i] << (i & 0x3) * 8; 4122 if ((i & 3) != 3) 4123 continue; 4124 4125 while (pool--) 4126 IXGBE_WRITE_REG(hw, 4127 IXGBE_PFVFRETA(i >> 2, VMDQ_P(pool)), 4128 vfreta); 4129 vfreta = 0; 4130 } 4131 } 4132 4133 static void ixgbe_setup_reta(struct ixgbe_adapter *adapter) 4134 { 4135 u32 i, j; 4136 u32 reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 4137 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; 4138 4139 /* Program table for at least 4 queues w/ SR-IOV so that VFs can 4140 * make full use of any rings they may have. We will use the 4141 * PSRTYPE register to control how many rings we use within the PF. 4142 */ 4143 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && (rss_i < 4)) 4144 rss_i = 4; 4145 4146 /* Fill out hash function seeds */ 4147 ixgbe_store_key(adapter); 4148 4149 /* Fill out redirection table */ 4150 memset(adapter->rss_indir_tbl, 0, sizeof(adapter->rss_indir_tbl)); 4151 4152 for (i = 0, j = 0; i < reta_entries; i++, j++) { 4153 if (j == rss_i) 4154 j = 0; 4155 4156 adapter->rss_indir_tbl[i] = j; 4157 } 4158 4159 ixgbe_store_reta(adapter); 4160 } 4161 4162 static void ixgbe_setup_vfreta(struct ixgbe_adapter *adapter) 4163 { 4164 struct ixgbe_hw *hw = &adapter->hw; 4165 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; 4166 int i, j; 4167 4168 /* Fill out hash function seeds */ 4169 for (i = 0; i < 10; i++) { 4170 u16 pool = adapter->num_rx_pools; 4171 4172 while (pool--) 4173 IXGBE_WRITE_REG(hw, 4174 IXGBE_PFVFRSSRK(i, VMDQ_P(pool)), 4175 *(adapter->rss_key + i)); 4176 } 4177 4178 /* Fill out the redirection table */ 4179 for (i = 0, j = 0; i < 64; i++, j++) { 4180 if (j == rss_i) 4181 j = 0; 4182 4183 adapter->rss_indir_tbl[i] = j; 4184 } 4185 4186 ixgbe_store_vfreta(adapter); 4187 } 4188 4189 static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter) 4190 { 4191 struct ixgbe_hw *hw = &adapter->hw; 4192 u32 mrqc = 0, rss_field = 0, vfmrqc = 0; 4193 u32 rxcsum; 4194 4195 /* Disable indicating checksum in descriptor, enables RSS hash */ 4196 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); 4197 rxcsum |= IXGBE_RXCSUM_PCSD; 4198 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); 4199 4200 if (adapter->hw.mac.type == ixgbe_mac_82598EB) { 4201 if (adapter->ring_feature[RING_F_RSS].mask) 4202 mrqc = IXGBE_MRQC_RSSEN; 4203 } else { 4204 u8 tcs = adapter->hw_tcs; 4205 4206 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 4207 if (tcs > 4) 4208 mrqc = IXGBE_MRQC_VMDQRT8TCEN; /* 8 TCs */ 4209 else if (tcs > 1) 4210 mrqc = IXGBE_MRQC_VMDQRT4TCEN; /* 4 TCs */ 4211 else if (adapter->ring_feature[RING_F_VMDQ].mask == 4212 IXGBE_82599_VMDQ_4Q_MASK) 4213 mrqc = IXGBE_MRQC_VMDQRSS32EN; 4214 else 4215 mrqc = IXGBE_MRQC_VMDQRSS64EN; 4216 4217 /* Enable L3/L4 for Tx Switched packets only for X550, 4218 * older devices do not support this feature 4219 */ 4220 if (hw->mac.type >= ixgbe_mac_X550) 4221 mrqc |= IXGBE_MRQC_L3L4TXSWEN; 4222 } else { 4223 if (tcs > 4) 4224 mrqc = IXGBE_MRQC_RTRSS8TCEN; 4225 else if (tcs > 1) 4226 mrqc = IXGBE_MRQC_RTRSS4TCEN; 4227 else 4228 mrqc = IXGBE_MRQC_RSSEN; 4229 } 4230 } 4231 4232 /* Perform hash on these packet types */ 4233 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4 | 4234 IXGBE_MRQC_RSS_FIELD_IPV4_TCP | 4235 IXGBE_MRQC_RSS_FIELD_IPV6 | 4236 IXGBE_MRQC_RSS_FIELD_IPV6_TCP; 4237 4238 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV4_UDP) 4239 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP; 4240 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV6_UDP) 4241 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP; 4242 4243 if ((hw->mac.type >= ixgbe_mac_X550) && 4244 (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) { 4245 u16 pool = adapter->num_rx_pools; 4246 4247 /* Enable VF RSS mode */ 4248 mrqc |= IXGBE_MRQC_MULTIPLE_RSS; 4249 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); 4250 4251 /* Setup RSS through the VF registers */ 4252 ixgbe_setup_vfreta(adapter); 4253 vfmrqc = IXGBE_MRQC_RSSEN; 4254 vfmrqc |= rss_field; 4255 4256 while (pool--) 4257 IXGBE_WRITE_REG(hw, 4258 IXGBE_PFVFMRQC(VMDQ_P(pool)), 4259 vfmrqc); 4260 } else { 4261 ixgbe_setup_reta(adapter); 4262 mrqc |= rss_field; 4263 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); 4264 } 4265 } 4266 4267 /** 4268 * ixgbe_configure_rscctl - enable RSC for the indicated ring 4269 * @adapter: address of board private structure 4270 * @ring: structure containing ring specific data 4271 **/ 4272 static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter, 4273 struct ixgbe_ring *ring) 4274 { 4275 struct ixgbe_hw *hw = &adapter->hw; 4276 u32 rscctrl; 4277 u8 reg_idx = ring->reg_idx; 4278 4279 if (!ring_is_rsc_enabled(ring)) 4280 return; 4281 4282 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx)); 4283 rscctrl |= IXGBE_RSCCTL_RSCEN; 4284 /* 4285 * we must limit the number of descriptors so that the 4286 * total size of max desc * buf_len is not greater 4287 * than 65536 4288 */ 4289 rscctrl |= IXGBE_RSCCTL_MAXDESC_16; 4290 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl); 4291 } 4292 4293 #define IXGBE_MAX_RX_DESC_POLL 10 4294 static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter, 4295 struct ixgbe_ring *ring) 4296 { 4297 struct ixgbe_hw *hw = &adapter->hw; 4298 int wait_loop = IXGBE_MAX_RX_DESC_POLL; 4299 u32 rxdctl; 4300 u8 reg_idx = ring->reg_idx; 4301 4302 if (ixgbe_removed(hw->hw_addr)) 4303 return; 4304 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */ 4305 if (hw->mac.type == ixgbe_mac_82598EB && 4306 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 4307 return; 4308 4309 do { 4310 usleep_range(1000, 2000); 4311 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 4312 } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE)); 4313 4314 if (!wait_loop) { 4315 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within " 4316 "the polling period\n", reg_idx); 4317 } 4318 } 4319 4320 void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter, 4321 struct ixgbe_ring *ring) 4322 { 4323 struct ixgbe_hw *hw = &adapter->hw; 4324 union ixgbe_adv_rx_desc *rx_desc; 4325 u64 rdba = ring->dma; 4326 u32 rxdctl; 4327 u8 reg_idx = ring->reg_idx; 4328 4329 xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq); 4330 ring->xsk_pool = ixgbe_xsk_pool(adapter, ring); 4331 if (ring->xsk_pool) { 4332 WARN_ON(xdp_rxq_info_reg_mem_model(&ring->xdp_rxq, 4333 MEM_TYPE_XSK_BUFF_POOL, 4334 NULL)); 4335 xsk_pool_set_rxq_info(ring->xsk_pool, &ring->xdp_rxq); 4336 } else { 4337 WARN_ON(xdp_rxq_info_reg_mem_model(&ring->xdp_rxq, 4338 MEM_TYPE_PAGE_SHARED, NULL)); 4339 } 4340 4341 /* disable queue to avoid use of these values while updating state */ 4342 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 4343 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 4344 4345 /* write value back with RXDCTL.ENABLE bit cleared */ 4346 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 4347 IXGBE_WRITE_FLUSH(hw); 4348 4349 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32))); 4350 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32)); 4351 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx), 4352 ring->count * sizeof(union ixgbe_adv_rx_desc)); 4353 /* Force flushing of IXGBE_RDLEN to prevent MDD */ 4354 IXGBE_WRITE_FLUSH(hw); 4355 4356 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0); 4357 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0); 4358 ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx); 4359 4360 ixgbe_configure_srrctl(adapter, ring); 4361 ixgbe_configure_rscctl(adapter, ring); 4362 4363 if (hw->mac.type == ixgbe_mac_82598EB) { 4364 /* 4365 * enable cache line friendly hardware writes: 4366 * PTHRESH=32 descriptors (half the internal cache), 4367 * this also removes ugly rx_no_buffer_count increment 4368 * HTHRESH=4 descriptors (to minimize latency on fetch) 4369 * WTHRESH=8 burst writeback up to two cache lines 4370 */ 4371 rxdctl &= ~0x3FFFFF; 4372 rxdctl |= 0x080420; 4373 #if (PAGE_SIZE < 8192) 4374 /* RXDCTL.RLPML does not work on 82599 */ 4375 } else if (hw->mac.type != ixgbe_mac_82599EB) { 4376 rxdctl &= ~(IXGBE_RXDCTL_RLPMLMASK | 4377 IXGBE_RXDCTL_RLPML_EN); 4378 4379 /* Limit the maximum frame size so we don't overrun the skb. 4380 * This can happen in SRIOV mode when the MTU of the VF is 4381 * higher than the MTU of the PF. 4382 */ 4383 if (ring_uses_build_skb(ring) && 4384 !test_bit(__IXGBE_RX_3K_BUFFER, &ring->state)) 4385 rxdctl |= IXGBE_MAX_2K_FRAME_BUILD_SKB | 4386 IXGBE_RXDCTL_RLPML_EN; 4387 #endif 4388 } 4389 4390 ring->rx_offset = ixgbe_rx_offset(ring); 4391 4392 if (ring->xsk_pool && hw->mac.type != ixgbe_mac_82599EB) { 4393 u32 xsk_buf_len = xsk_pool_get_rx_frame_size(ring->xsk_pool); 4394 4395 rxdctl &= ~(IXGBE_RXDCTL_RLPMLMASK | 4396 IXGBE_RXDCTL_RLPML_EN); 4397 rxdctl |= xsk_buf_len | IXGBE_RXDCTL_RLPML_EN; 4398 4399 ring->rx_buf_len = xsk_buf_len; 4400 } 4401 4402 /* initialize rx_buffer_info */ 4403 memset(ring->rx_buffer_info, 0, 4404 sizeof(struct ixgbe_rx_buffer) * ring->count); 4405 4406 /* initialize Rx descriptor 0 */ 4407 rx_desc = IXGBE_RX_DESC(ring, 0); 4408 rx_desc->wb.upper.length = 0; 4409 4410 /* enable receive descriptor ring */ 4411 rxdctl |= IXGBE_RXDCTL_ENABLE; 4412 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 4413 4414 ixgbe_rx_desc_queue_enable(adapter, ring); 4415 if (ring->xsk_pool) 4416 ixgbe_alloc_rx_buffers_zc(ring, ixgbe_desc_unused(ring)); 4417 else 4418 ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring)); 4419 } 4420 4421 static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter) 4422 { 4423 struct ixgbe_hw *hw = &adapter->hw; 4424 int rss_i = adapter->ring_feature[RING_F_RSS].indices; 4425 u16 pool = adapter->num_rx_pools; 4426 4427 /* PSRTYPE must be initialized in non 82598 adapters */ 4428 u32 psrtype = IXGBE_PSRTYPE_TCPHDR | 4429 IXGBE_PSRTYPE_UDPHDR | 4430 IXGBE_PSRTYPE_IPV4HDR | 4431 IXGBE_PSRTYPE_L2HDR | 4432 IXGBE_PSRTYPE_IPV6HDR; 4433 4434 if (hw->mac.type == ixgbe_mac_82598EB) 4435 return; 4436 4437 if (rss_i > 3) 4438 psrtype |= 2u << 29; 4439 else if (rss_i > 1) 4440 psrtype |= 1u << 29; 4441 4442 while (pool--) 4443 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype); 4444 } 4445 4446 static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter) 4447 { 4448 struct ixgbe_hw *hw = &adapter->hw; 4449 u16 pool = adapter->num_rx_pools; 4450 u32 reg_offset, vf_shift, vmolr; 4451 u32 gcr_ext, vmdctl; 4452 int i; 4453 4454 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 4455 return; 4456 4457 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 4458 vmdctl |= IXGBE_VMD_CTL_VMDQ_EN; 4459 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 4460 vmdctl |= VMDQ_P(0) << IXGBE_VT_CTL_POOL_SHIFT; 4461 vmdctl |= IXGBE_VT_CTL_REPLEN; 4462 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 4463 4464 /* accept untagged packets until a vlan tag is 4465 * specifically set for the VMDQ queue/pool 4466 */ 4467 vmolr = IXGBE_VMOLR_AUPE; 4468 while (pool--) 4469 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(pool)), vmolr); 4470 4471 vf_shift = VMDQ_P(0) % 32; 4472 reg_offset = (VMDQ_P(0) >= 32) ? 1 : 0; 4473 4474 /* Enable only the PF's pool for Tx/Rx */ 4475 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), GENMASK(31, vf_shift)); 4476 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), reg_offset - 1); 4477 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), GENMASK(31, vf_shift)); 4478 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), reg_offset - 1); 4479 if (adapter->bridge_mode == BRIDGE_MODE_VEB) 4480 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 4481 4482 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */ 4483 hw->mac.ops.set_vmdq(hw, 0, VMDQ_P(0)); 4484 4485 /* clear VLAN promisc flag so VFTA will be updated if necessary */ 4486 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC; 4487 4488 /* 4489 * Set up VF register offsets for selected VT Mode, 4490 * i.e. 32 or 64 VFs for SR-IOV 4491 */ 4492 switch (adapter->ring_feature[RING_F_VMDQ].mask) { 4493 case IXGBE_82599_VMDQ_8Q_MASK: 4494 gcr_ext = IXGBE_GCR_EXT_VT_MODE_16; 4495 break; 4496 case IXGBE_82599_VMDQ_4Q_MASK: 4497 gcr_ext = IXGBE_GCR_EXT_VT_MODE_32; 4498 break; 4499 default: 4500 gcr_ext = IXGBE_GCR_EXT_VT_MODE_64; 4501 break; 4502 } 4503 4504 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext); 4505 4506 for (i = 0; i < adapter->num_vfs; i++) { 4507 /* configure spoof checking */ 4508 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, i, 4509 adapter->vfinfo[i].spoofchk_enabled); 4510 4511 /* Enable/Disable RSS query feature */ 4512 ixgbe_ndo_set_vf_rss_query_en(adapter->netdev, i, 4513 adapter->vfinfo[i].rss_query_enabled); 4514 } 4515 } 4516 4517 static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter) 4518 { 4519 struct ixgbe_hw *hw = &adapter->hw; 4520 struct net_device *netdev = adapter->netdev; 4521 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; 4522 struct ixgbe_ring *rx_ring; 4523 int i; 4524 u32 mhadd, hlreg0; 4525 4526 #ifdef IXGBE_FCOE 4527 /* adjust max frame to be able to do baby jumbo for FCoE */ 4528 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) && 4529 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE)) 4530 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE; 4531 4532 #endif /* IXGBE_FCOE */ 4533 4534 /* adjust max frame to be at least the size of a standard frame */ 4535 if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) 4536 max_frame = (ETH_FRAME_LEN + ETH_FCS_LEN); 4537 4538 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); 4539 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { 4540 mhadd &= ~IXGBE_MHADD_MFS_MASK; 4541 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; 4542 4543 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); 4544 } 4545 4546 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); 4547 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */ 4548 hlreg0 |= IXGBE_HLREG0_JUMBOEN; 4549 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); 4550 4551 /* 4552 * Setup the HW Rx Head and Tail Descriptor Pointers and 4553 * the Base and Length of the Rx Descriptor Ring 4554 */ 4555 for (i = 0; i < adapter->num_rx_queues; i++) { 4556 rx_ring = adapter->rx_ring[i]; 4557 4558 clear_ring_rsc_enabled(rx_ring); 4559 clear_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4560 clear_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); 4561 4562 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 4563 set_ring_rsc_enabled(rx_ring); 4564 4565 if (test_bit(__IXGBE_RX_FCOE, &rx_ring->state)) 4566 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4567 4568 if (adapter->flags2 & IXGBE_FLAG2_RX_LEGACY) 4569 continue; 4570 4571 set_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); 4572 4573 #if (PAGE_SIZE < 8192) 4574 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 4575 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4576 4577 if (IXGBE_2K_TOO_SMALL_WITH_PADDING || 4578 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 4579 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4580 #endif 4581 } 4582 } 4583 4584 static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter) 4585 { 4586 struct ixgbe_hw *hw = &adapter->hw; 4587 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); 4588 4589 switch (hw->mac.type) { 4590 case ixgbe_mac_82598EB: 4591 /* 4592 * For VMDq support of different descriptor types or 4593 * buffer sizes through the use of multiple SRRCTL 4594 * registers, RDRXCTL.MVMEN must be set to 1 4595 * 4596 * also, the manual doesn't mention it clearly but DCA hints 4597 * will only use queue 0's tags unless this bit is set. Side 4598 * effects of setting this bit are only that SRRCTL must be 4599 * fully programmed [0..15] 4600 */ 4601 rdrxctl |= IXGBE_RDRXCTL_MVMEN; 4602 break; 4603 case ixgbe_mac_X550: 4604 case ixgbe_mac_X550EM_x: 4605 case ixgbe_mac_x550em_a: 4606 case ixgbe_mac_e610: 4607 if (adapter->num_vfs) 4608 rdrxctl |= IXGBE_RDRXCTL_PSP; 4609 fallthrough; 4610 case ixgbe_mac_82599EB: 4611 case ixgbe_mac_X540: 4612 /* Disable RSC for ACK packets */ 4613 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU, 4614 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU))); 4615 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE; 4616 /* hardware requires some bits to be set by default */ 4617 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX); 4618 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP; 4619 break; 4620 default: 4621 /* We should do nothing since we don't know this hardware */ 4622 return; 4623 } 4624 4625 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); 4626 } 4627 4628 /** 4629 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset 4630 * @adapter: board private structure 4631 * 4632 * Configure the Rx unit of the MAC after a reset. 4633 **/ 4634 static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) 4635 { 4636 struct ixgbe_hw *hw = &adapter->hw; 4637 int i; 4638 u32 rxctrl, rfctl; 4639 4640 /* disable receives while setting up the descriptors */ 4641 hw->mac.ops.disable_rx(hw); 4642 4643 ixgbe_setup_psrtype(adapter); 4644 ixgbe_setup_rdrxctl(adapter); 4645 4646 /* RSC Setup */ 4647 rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL); 4648 rfctl &= ~IXGBE_RFCTL_RSC_DIS; 4649 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) 4650 rfctl |= IXGBE_RFCTL_RSC_DIS; 4651 4652 /* disable NFS filtering */ 4653 rfctl |= (IXGBE_RFCTL_NFSW_DIS | IXGBE_RFCTL_NFSR_DIS); 4654 IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl); 4655 4656 /* Program registers for the distribution of queues */ 4657 ixgbe_setup_mrqc(adapter); 4658 4659 /* set_rx_buffer_len must be called before ring initialization */ 4660 ixgbe_set_rx_buffer_len(adapter); 4661 4662 /* 4663 * Setup the HW Rx Head and Tail Descriptor Pointers and 4664 * the Base and Length of the Rx Descriptor Ring 4665 */ 4666 for (i = 0; i < adapter->num_rx_queues; i++) 4667 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]); 4668 4669 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); 4670 /* disable drop enable for 82598 parts */ 4671 if (hw->mac.type == ixgbe_mac_82598EB) 4672 rxctrl |= IXGBE_RXCTRL_DMBYPS; 4673 4674 /* enable all receives */ 4675 rxctrl |= IXGBE_RXCTRL_RXEN; 4676 hw->mac.ops.enable_rx_dma(hw, rxctrl); 4677 } 4678 4679 static int ixgbe_vlan_rx_add_vid(struct net_device *netdev, 4680 __be16 proto, u16 vid) 4681 { 4682 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 4683 struct ixgbe_hw *hw = &adapter->hw; 4684 4685 /* add VID to filter table */ 4686 if (!vid || !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4687 hw->mac.ops.set_vfta(&adapter->hw, vid, VMDQ_P(0), true, !!vid); 4688 4689 set_bit(vid, adapter->active_vlans); 4690 4691 return 0; 4692 } 4693 4694 static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan) 4695 { 4696 u32 vlvf; 4697 int idx; 4698 4699 /* short cut the special case */ 4700 if (vlan == 0) 4701 return 0; 4702 4703 /* Search for the vlan id in the VLVF entries */ 4704 for (idx = IXGBE_VLVF_ENTRIES; --idx;) { 4705 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(idx)); 4706 if ((vlvf & VLAN_VID_MASK) == vlan) 4707 break; 4708 } 4709 4710 return idx; 4711 } 4712 4713 void ixgbe_update_pf_promisc_vlvf(struct ixgbe_adapter *adapter, u32 vid) 4714 { 4715 struct ixgbe_hw *hw = &adapter->hw; 4716 u32 bits, word; 4717 int idx; 4718 4719 idx = ixgbe_find_vlvf_entry(hw, vid); 4720 if (!idx) 4721 return; 4722 4723 /* See if any other pools are set for this VLAN filter 4724 * entry other than the PF. 4725 */ 4726 word = idx * 2 + (VMDQ_P(0) / 32); 4727 bits = ~BIT(VMDQ_P(0) % 32); 4728 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 4729 4730 /* Disable the filter so this falls into the default pool. */ 4731 if (!bits && !IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1))) { 4732 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4733 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), 0); 4734 IXGBE_WRITE_REG(hw, IXGBE_VLVF(idx), 0); 4735 } 4736 } 4737 4738 static int ixgbe_vlan_rx_kill_vid(struct net_device *netdev, 4739 __be16 proto, u16 vid) 4740 { 4741 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 4742 struct ixgbe_hw *hw = &adapter->hw; 4743 4744 /* remove VID from filter table */ 4745 if (vid && !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4746 hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), false, true); 4747 4748 clear_bit(vid, adapter->active_vlans); 4749 4750 return 0; 4751 } 4752 4753 /** 4754 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping 4755 * @adapter: driver data 4756 */ 4757 static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter) 4758 { 4759 struct ixgbe_hw *hw = &adapter->hw; 4760 u32 vlnctrl; 4761 int i, j; 4762 4763 switch (hw->mac.type) { 4764 case ixgbe_mac_82598EB: 4765 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4766 vlnctrl &= ~IXGBE_VLNCTRL_VME; 4767 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4768 break; 4769 case ixgbe_mac_82599EB: 4770 case ixgbe_mac_X540: 4771 case ixgbe_mac_X550: 4772 case ixgbe_mac_X550EM_x: 4773 case ixgbe_mac_x550em_a: 4774 case ixgbe_mac_e610: 4775 for (i = 0; i < adapter->num_rx_queues; i++) { 4776 struct ixgbe_ring *ring = adapter->rx_ring[i]; 4777 4778 if (!netif_is_ixgbe(ring->netdev)) 4779 continue; 4780 4781 j = ring->reg_idx; 4782 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); 4783 vlnctrl &= ~IXGBE_RXDCTL_VME; 4784 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); 4785 } 4786 break; 4787 default: 4788 break; 4789 } 4790 } 4791 4792 /** 4793 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping 4794 * @adapter: driver data 4795 */ 4796 static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter) 4797 { 4798 struct ixgbe_hw *hw = &adapter->hw; 4799 u32 vlnctrl; 4800 int i, j; 4801 4802 switch (hw->mac.type) { 4803 case ixgbe_mac_82598EB: 4804 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4805 vlnctrl |= IXGBE_VLNCTRL_VME; 4806 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4807 break; 4808 case ixgbe_mac_82599EB: 4809 case ixgbe_mac_X540: 4810 case ixgbe_mac_X550: 4811 case ixgbe_mac_X550EM_x: 4812 case ixgbe_mac_x550em_a: 4813 case ixgbe_mac_e610: 4814 for (i = 0; i < adapter->num_rx_queues; i++) { 4815 struct ixgbe_ring *ring = adapter->rx_ring[i]; 4816 4817 if (!netif_is_ixgbe(ring->netdev)) 4818 continue; 4819 4820 j = ring->reg_idx; 4821 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); 4822 vlnctrl |= IXGBE_RXDCTL_VME; 4823 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); 4824 } 4825 break; 4826 default: 4827 break; 4828 } 4829 } 4830 4831 static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter) 4832 { 4833 struct ixgbe_hw *hw = &adapter->hw; 4834 u32 vlnctrl, i; 4835 4836 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4837 4838 if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) { 4839 /* For VMDq and SR-IOV we must leave VLAN filtering enabled */ 4840 vlnctrl |= IXGBE_VLNCTRL_VFE; 4841 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4842 } else { 4843 vlnctrl &= ~IXGBE_VLNCTRL_VFE; 4844 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4845 return; 4846 } 4847 4848 /* Nothing to do for 82598 */ 4849 if (hw->mac.type == ixgbe_mac_82598EB) 4850 return; 4851 4852 /* We are already in VLAN promisc, nothing to do */ 4853 if (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC) 4854 return; 4855 4856 /* Set flag so we don't redo unnecessary work */ 4857 adapter->flags2 |= IXGBE_FLAG2_VLAN_PROMISC; 4858 4859 /* Add PF to all active pools */ 4860 for (i = IXGBE_VLVF_ENTRIES; --i;) { 4861 u32 reg_offset = IXGBE_VLVFB(i * 2 + VMDQ_P(0) / 32); 4862 u32 vlvfb = IXGBE_READ_REG(hw, reg_offset); 4863 4864 vlvfb |= BIT(VMDQ_P(0) % 32); 4865 IXGBE_WRITE_REG(hw, reg_offset, vlvfb); 4866 } 4867 4868 /* Set all bits in the VLAN filter table array */ 4869 for (i = hw->mac.vft_size; i--;) 4870 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), ~0U); 4871 } 4872 4873 #define VFTA_BLOCK_SIZE 8 4874 static void ixgbe_scrub_vfta(struct ixgbe_adapter *adapter, u32 vfta_offset) 4875 { 4876 struct ixgbe_hw *hw = &adapter->hw; 4877 u32 vfta[VFTA_BLOCK_SIZE] = { 0 }; 4878 u32 vid_start = vfta_offset * 32; 4879 u32 vid_end = vid_start + (VFTA_BLOCK_SIZE * 32); 4880 u32 i, vid, word, bits; 4881 4882 for (i = IXGBE_VLVF_ENTRIES; --i;) { 4883 u32 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); 4884 4885 /* pull VLAN ID from VLVF */ 4886 vid = vlvf & VLAN_VID_MASK; 4887 4888 /* only concern outselves with a certain range */ 4889 if (vid < vid_start || vid >= vid_end) 4890 continue; 4891 4892 if (vlvf) { 4893 /* record VLAN ID in VFTA */ 4894 vfta[(vid - vid_start) / 32] |= BIT(vid % 32); 4895 4896 /* if PF is part of this then continue */ 4897 if (test_bit(vid, adapter->active_vlans)) 4898 continue; 4899 } 4900 4901 /* remove PF from the pool */ 4902 word = i * 2 + VMDQ_P(0) / 32; 4903 bits = ~BIT(VMDQ_P(0) % 32); 4904 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 4905 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), bits); 4906 } 4907 4908 /* extract values from active_vlans and write back to VFTA */ 4909 for (i = VFTA_BLOCK_SIZE; i--;) { 4910 vid = (vfta_offset + i) * 32; 4911 word = vid / BITS_PER_LONG; 4912 bits = vid % BITS_PER_LONG; 4913 4914 vfta[i] |= adapter->active_vlans[word] >> bits; 4915 4916 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vfta_offset + i), vfta[i]); 4917 } 4918 } 4919 4920 static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter *adapter) 4921 { 4922 struct ixgbe_hw *hw = &adapter->hw; 4923 u32 vlnctrl, i; 4924 4925 /* Set VLAN filtering to enabled */ 4926 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4927 vlnctrl |= IXGBE_VLNCTRL_VFE; 4928 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4929 4930 if (!(adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) || 4931 hw->mac.type == ixgbe_mac_82598EB) 4932 return; 4933 4934 /* We are not in VLAN promisc, nothing to do */ 4935 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4936 return; 4937 4938 /* Set flag so we don't redo unnecessary work */ 4939 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC; 4940 4941 for (i = 0; i < hw->mac.vft_size; i += VFTA_BLOCK_SIZE) 4942 ixgbe_scrub_vfta(adapter, i); 4943 } 4944 4945 static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) 4946 { 4947 u16 vid = 1; 4948 4949 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0); 4950 4951 for_each_set_bit_from(vid, adapter->active_vlans, VLAN_N_VID) 4952 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); 4953 } 4954 4955 /** 4956 * ixgbe_write_mc_addr_list - write multicast addresses to MTA 4957 * @netdev: network interface device structure 4958 * 4959 * Writes multicast address list to the MTA hash table. 4960 * Returns: -ENOMEM on failure 4961 * 0 on no addresses written 4962 * X on writing X addresses to MTA 4963 **/ 4964 static int ixgbe_write_mc_addr_list(struct net_device *netdev) 4965 { 4966 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 4967 struct ixgbe_hw *hw = &adapter->hw; 4968 4969 if (!netif_running(netdev)) 4970 return 0; 4971 4972 if (hw->mac.ops.update_mc_addr_list) 4973 hw->mac.ops.update_mc_addr_list(hw, netdev); 4974 else 4975 return -ENOMEM; 4976 4977 #ifdef CONFIG_PCI_IOV 4978 ixgbe_restore_vf_multicasts(adapter); 4979 #endif 4980 4981 return netdev_mc_count(netdev); 4982 } 4983 4984 #ifdef CONFIG_PCI_IOV 4985 void ixgbe_full_sync_mac_table(struct ixgbe_adapter *adapter) 4986 { 4987 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4988 struct ixgbe_hw *hw = &adapter->hw; 4989 int i; 4990 4991 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4992 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED; 4993 4994 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 4995 hw->mac.ops.set_rar(hw, i, 4996 mac_table->addr, 4997 mac_table->pool, 4998 IXGBE_RAH_AV); 4999 else 5000 hw->mac.ops.clear_rar(hw, i); 5001 } 5002 } 5003 5004 #endif 5005 static void ixgbe_sync_mac_table(struct ixgbe_adapter *adapter) 5006 { 5007 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5008 struct ixgbe_hw *hw = &adapter->hw; 5009 int i; 5010 5011 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 5012 if (!(mac_table->state & IXGBE_MAC_STATE_MODIFIED)) 5013 continue; 5014 5015 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED; 5016 5017 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 5018 hw->mac.ops.set_rar(hw, i, 5019 mac_table->addr, 5020 mac_table->pool, 5021 IXGBE_RAH_AV); 5022 else 5023 hw->mac.ops.clear_rar(hw, i); 5024 } 5025 } 5026 5027 static void ixgbe_flush_sw_mac_table(struct ixgbe_adapter *adapter) 5028 { 5029 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5030 struct ixgbe_hw *hw = &adapter->hw; 5031 int i; 5032 5033 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 5034 mac_table->state |= IXGBE_MAC_STATE_MODIFIED; 5035 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE; 5036 } 5037 5038 ixgbe_sync_mac_table(adapter); 5039 } 5040 5041 static int ixgbe_available_rars(struct ixgbe_adapter *adapter, u16 pool) 5042 { 5043 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5044 struct ixgbe_hw *hw = &adapter->hw; 5045 int i, count = 0; 5046 5047 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 5048 /* do not count default RAR as available */ 5049 if (mac_table->state & IXGBE_MAC_STATE_DEFAULT) 5050 continue; 5051 5052 /* only count unused and addresses that belong to us */ 5053 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) { 5054 if (mac_table->pool != pool) 5055 continue; 5056 } 5057 5058 count++; 5059 } 5060 5061 return count; 5062 } 5063 5064 /* this function destroys the first RAR entry */ 5065 static void ixgbe_mac_set_default_filter(struct ixgbe_adapter *adapter) 5066 { 5067 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5068 struct ixgbe_hw *hw = &adapter->hw; 5069 5070 memcpy(&mac_table->addr, hw->mac.addr, ETH_ALEN); 5071 mac_table->pool = VMDQ_P(0); 5072 5073 mac_table->state = IXGBE_MAC_STATE_DEFAULT | IXGBE_MAC_STATE_IN_USE; 5074 5075 hw->mac.ops.set_rar(hw, 0, mac_table->addr, mac_table->pool, 5076 IXGBE_RAH_AV); 5077 } 5078 5079 int ixgbe_add_mac_filter(struct ixgbe_adapter *adapter, 5080 const u8 *addr, u16 pool) 5081 { 5082 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5083 struct ixgbe_hw *hw = &adapter->hw; 5084 int i; 5085 5086 if (is_zero_ether_addr(addr)) 5087 return -EINVAL; 5088 5089 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 5090 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 5091 continue; 5092 5093 ether_addr_copy(mac_table->addr, addr); 5094 mac_table->pool = pool; 5095 5096 mac_table->state |= IXGBE_MAC_STATE_MODIFIED | 5097 IXGBE_MAC_STATE_IN_USE; 5098 5099 ixgbe_sync_mac_table(adapter); 5100 5101 return i; 5102 } 5103 5104 return -ENOMEM; 5105 } 5106 5107 int ixgbe_del_mac_filter(struct ixgbe_adapter *adapter, 5108 const u8 *addr, u16 pool) 5109 { 5110 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5111 struct ixgbe_hw *hw = &adapter->hw; 5112 int i; 5113 5114 if (is_zero_ether_addr(addr)) 5115 return -EINVAL; 5116 5117 /* search table for addr, if found clear IN_USE flag and sync */ 5118 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 5119 /* we can only delete an entry if it is in use */ 5120 if (!(mac_table->state & IXGBE_MAC_STATE_IN_USE)) 5121 continue; 5122 /* we only care about entries that belong to the given pool */ 5123 if (mac_table->pool != pool) 5124 continue; 5125 /* we only care about a specific MAC address */ 5126 if (!ether_addr_equal(addr, mac_table->addr)) 5127 continue; 5128 5129 mac_table->state |= IXGBE_MAC_STATE_MODIFIED; 5130 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE; 5131 5132 ixgbe_sync_mac_table(adapter); 5133 5134 return 0; 5135 } 5136 5137 return -ENOMEM; 5138 } 5139 5140 static int ixgbe_uc_sync(struct net_device *netdev, const unsigned char *addr) 5141 { 5142 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 5143 int ret; 5144 5145 ret = ixgbe_add_mac_filter(adapter, addr, VMDQ_P(0)); 5146 5147 return min_t(int, ret, 0); 5148 } 5149 5150 static int ixgbe_uc_unsync(struct net_device *netdev, const unsigned char *addr) 5151 { 5152 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 5153 5154 ixgbe_del_mac_filter(adapter, addr, VMDQ_P(0)); 5155 5156 return 0; 5157 } 5158 5159 /** 5160 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set 5161 * @netdev: network interface device structure 5162 * 5163 * The set_rx_method entry point is called whenever the unicast/multicast 5164 * address list or the network interface flags are updated. This routine is 5165 * responsible for configuring the hardware for proper unicast, multicast and 5166 * promiscuous mode. 5167 **/ 5168 void ixgbe_set_rx_mode(struct net_device *netdev) 5169 { 5170 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 5171 struct ixgbe_hw *hw = &adapter->hw; 5172 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE; 5173 netdev_features_t features = netdev->features; 5174 int count; 5175 5176 /* Check for Promiscuous and All Multicast modes */ 5177 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 5178 5179 /* set all bits that we expect to always be set */ 5180 fctrl &= ~IXGBE_FCTRL_SBP; /* disable store-bad-packets */ 5181 fctrl |= IXGBE_FCTRL_BAM; 5182 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */ 5183 fctrl |= IXGBE_FCTRL_PMCF; 5184 5185 /* clear the bits we are changing the status of */ 5186 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); 5187 if (netdev->flags & IFF_PROMISC) { 5188 hw->addr_ctrl.user_set_promisc = true; 5189 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); 5190 vmolr |= IXGBE_VMOLR_MPE; 5191 features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 5192 } else { 5193 if (netdev->flags & IFF_ALLMULTI) { 5194 fctrl |= IXGBE_FCTRL_MPE; 5195 vmolr |= IXGBE_VMOLR_MPE; 5196 } 5197 hw->addr_ctrl.user_set_promisc = false; 5198 } 5199 5200 /* 5201 * Write addresses to available RAR registers, if there is not 5202 * sufficient space to store all the addresses then enable 5203 * unicast promiscuous mode 5204 */ 5205 if (__dev_uc_sync(netdev, ixgbe_uc_sync, ixgbe_uc_unsync)) { 5206 fctrl |= IXGBE_FCTRL_UPE; 5207 vmolr |= IXGBE_VMOLR_ROPE; 5208 } 5209 5210 /* Write addresses to the MTA, if the attempt fails 5211 * then we should just turn on promiscuous mode so 5212 * that we can at least receive multicast traffic 5213 */ 5214 count = ixgbe_write_mc_addr_list(netdev); 5215 if (count < 0) { 5216 fctrl |= IXGBE_FCTRL_MPE; 5217 vmolr |= IXGBE_VMOLR_MPE; 5218 } else if (count) { 5219 vmolr |= IXGBE_VMOLR_ROMPE; 5220 } 5221 5222 if (hw->mac.type != ixgbe_mac_82598EB) { 5223 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(VMDQ_P(0))) & 5224 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE | 5225 IXGBE_VMOLR_ROPE); 5226 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(0)), vmolr); 5227 } 5228 5229 /* This is useful for sniffing bad packets. */ 5230 if (features & NETIF_F_RXALL) { 5231 /* UPE and MPE will be handled by normal PROMISC logic 5232 * in e1000e_set_rx_mode */ 5233 fctrl |= (IXGBE_FCTRL_SBP | /* Receive bad packets */ 5234 IXGBE_FCTRL_BAM | /* RX All Bcast Pkts */ 5235 IXGBE_FCTRL_PMCF); /* RX All MAC Ctrl Pkts */ 5236 5237 fctrl &= ~(IXGBE_FCTRL_DPF); 5238 /* NOTE: VLAN filtering is disabled by setting PROMISC */ 5239 } 5240 5241 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); 5242 5243 if (features & NETIF_F_HW_VLAN_CTAG_RX) 5244 ixgbe_vlan_strip_enable(adapter); 5245 else 5246 ixgbe_vlan_strip_disable(adapter); 5247 5248 if (features & NETIF_F_HW_VLAN_CTAG_FILTER) 5249 ixgbe_vlan_promisc_disable(adapter); 5250 else 5251 ixgbe_vlan_promisc_enable(adapter); 5252 } 5253 5254 static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter) 5255 { 5256 int q_idx; 5257 5258 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) 5259 napi_enable(&adapter->q_vector[q_idx]->napi); 5260 } 5261 5262 static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) 5263 { 5264 int q_idx; 5265 5266 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) 5267 napi_disable(&adapter->q_vector[q_idx]->napi); 5268 } 5269 5270 static int ixgbe_udp_tunnel_sync(struct net_device *dev, unsigned int table) 5271 { 5272 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 5273 struct ixgbe_hw *hw = &adapter->hw; 5274 struct udp_tunnel_info ti; 5275 5276 udp_tunnel_nic_get_port(dev, table, 0, &ti); 5277 if (ti.type == UDP_TUNNEL_TYPE_VXLAN) 5278 adapter->vxlan_port = ti.port; 5279 else 5280 adapter->geneve_port = ti.port; 5281 5282 IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, 5283 ntohs(adapter->vxlan_port) | 5284 ntohs(adapter->geneve_port) << 5285 IXGBE_VXLANCTRL_GENEVE_UDPPORT_SHIFT); 5286 return 0; 5287 } 5288 5289 static const struct udp_tunnel_nic_info ixgbe_udp_tunnels_x550 = { 5290 .sync_table = ixgbe_udp_tunnel_sync, 5291 .flags = UDP_TUNNEL_NIC_INFO_IPV4_ONLY, 5292 .tables = { 5293 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, }, 5294 }, 5295 }; 5296 5297 static const struct udp_tunnel_nic_info ixgbe_udp_tunnels_x550em_a = { 5298 .sync_table = ixgbe_udp_tunnel_sync, 5299 .flags = UDP_TUNNEL_NIC_INFO_IPV4_ONLY, 5300 .tables = { 5301 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, }, 5302 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_GENEVE, }, 5303 }, 5304 }; 5305 5306 #ifdef CONFIG_IXGBE_DCB 5307 /** 5308 * ixgbe_configure_dcb - Configure DCB hardware 5309 * @adapter: ixgbe adapter struct 5310 * 5311 * This is called by the driver on open to configure the DCB hardware. 5312 * This is also called by the gennetlink interface when reconfiguring 5313 * the DCB state. 5314 */ 5315 static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter) 5316 { 5317 struct ixgbe_hw *hw = &adapter->hw; 5318 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN; 5319 5320 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) { 5321 if (hw->mac.type == ixgbe_mac_82598EB) 5322 netif_set_tso_max_size(adapter->netdev, 65536); 5323 return; 5324 } 5325 5326 if (hw->mac.type == ixgbe_mac_82598EB) 5327 netif_set_tso_max_size(adapter->netdev, 32768); 5328 5329 #ifdef IXGBE_FCOE 5330 if (adapter->netdev->fcoe_mtu) 5331 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE); 5332 #endif 5333 5334 /* reconfigure the hardware */ 5335 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) { 5336 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, 5337 DCB_TX_CONFIG); 5338 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, 5339 DCB_RX_CONFIG); 5340 ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg); 5341 } else if (adapter->ixgbe_ieee_ets && adapter->ixgbe_ieee_pfc) { 5342 ixgbe_dcb_hw_ets(&adapter->hw, 5343 adapter->ixgbe_ieee_ets, 5344 max_frame); 5345 ixgbe_dcb_hw_pfc_config(&adapter->hw, 5346 adapter->ixgbe_ieee_pfc->pfc_en, 5347 adapter->ixgbe_ieee_ets->prio_tc); 5348 } 5349 5350 /* Enable RSS Hash per TC */ 5351 if (hw->mac.type != ixgbe_mac_82598EB) { 5352 u32 msb = 0; 5353 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices - 1; 5354 5355 while (rss_i) { 5356 msb++; 5357 rss_i >>= 1; 5358 } 5359 5360 /* write msb to all 8 TCs in one write */ 5361 IXGBE_WRITE_REG(hw, IXGBE_RQTC, msb * 0x11111111); 5362 } 5363 } 5364 #endif 5365 5366 /* Additional bittime to account for IXGBE framing */ 5367 #define IXGBE_ETH_FRAMING 20 5368 5369 /** 5370 * ixgbe_hpbthresh - calculate high water mark for flow control 5371 * 5372 * @adapter: board private structure to calculate for 5373 * @pb: packet buffer to calculate 5374 */ 5375 static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb) 5376 { 5377 struct ixgbe_hw *hw = &adapter->hw; 5378 struct net_device *dev = adapter->netdev; 5379 int link, tc, kb, marker; 5380 u32 dv_id, rx_pba; 5381 5382 /* Calculate max LAN frame size */ 5383 tc = link = dev->mtu + ETH_HLEN + ETH_FCS_LEN + IXGBE_ETH_FRAMING; 5384 5385 #ifdef IXGBE_FCOE 5386 /* FCoE traffic class uses FCOE jumbo frames */ 5387 if (dev->fcoe_mtu && tc < IXGBE_FCOE_JUMBO_FRAME_SIZE && 5388 (pb == ixgbe_fcoe_get_tc(adapter))) 5389 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; 5390 #endif 5391 5392 /* Calculate delay value for device */ 5393 switch (hw->mac.type) { 5394 case ixgbe_mac_X540: 5395 case ixgbe_mac_X550: 5396 case ixgbe_mac_X550EM_x: 5397 case ixgbe_mac_x550em_a: 5398 case ixgbe_mac_e610: 5399 dv_id = IXGBE_DV_X540(link, tc); 5400 break; 5401 default: 5402 dv_id = IXGBE_DV(link, tc); 5403 break; 5404 } 5405 5406 /* Loopback switch introduces additional latency */ 5407 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 5408 dv_id += IXGBE_B2BT(tc); 5409 5410 /* Delay value is calculated in bit times convert to KB */ 5411 kb = IXGBE_BT2KB(dv_id); 5412 rx_pba = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(pb)) >> 10; 5413 5414 marker = rx_pba - kb; 5415 5416 /* It is possible that the packet buffer is not large enough 5417 * to provide required headroom. In this case throw an error 5418 * to user and a do the best we can. 5419 */ 5420 if (marker < 0) { 5421 e_warn(drv, "Packet Buffer(%i) can not provide enough" 5422 "headroom to support flow control." 5423 "Decrease MTU or number of traffic classes\n", pb); 5424 marker = tc + 1; 5425 } 5426 5427 return marker; 5428 } 5429 5430 /** 5431 * ixgbe_lpbthresh - calculate low water mark for flow control 5432 * 5433 * @adapter: board private structure to calculate for 5434 * @pb: packet buffer to calculate 5435 */ 5436 static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter, int pb) 5437 { 5438 struct ixgbe_hw *hw = &adapter->hw; 5439 struct net_device *dev = adapter->netdev; 5440 int tc; 5441 u32 dv_id; 5442 5443 /* Calculate max LAN frame size */ 5444 tc = dev->mtu + ETH_HLEN + ETH_FCS_LEN; 5445 5446 #ifdef IXGBE_FCOE 5447 /* FCoE traffic class uses FCOE jumbo frames */ 5448 if (dev->fcoe_mtu && tc < IXGBE_FCOE_JUMBO_FRAME_SIZE && 5449 (pb == netdev_get_prio_tc_map(dev, adapter->fcoe.up))) 5450 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; 5451 #endif 5452 5453 /* Calculate delay value for device */ 5454 switch (hw->mac.type) { 5455 case ixgbe_mac_X540: 5456 case ixgbe_mac_X550: 5457 case ixgbe_mac_X550EM_x: 5458 case ixgbe_mac_x550em_a: 5459 case ixgbe_mac_e610: 5460 dv_id = IXGBE_LOW_DV_X540(tc); 5461 break; 5462 default: 5463 dv_id = IXGBE_LOW_DV(tc); 5464 break; 5465 } 5466 5467 /* Delay value is calculated in bit times convert to KB */ 5468 return IXGBE_BT2KB(dv_id); 5469 } 5470 5471 /* 5472 * ixgbe_pbthresh_setup - calculate and setup high low water marks 5473 */ 5474 static void ixgbe_pbthresh_setup(struct ixgbe_adapter *adapter) 5475 { 5476 struct ixgbe_hw *hw = &adapter->hw; 5477 int num_tc = adapter->hw_tcs; 5478 int i; 5479 5480 if (!num_tc) 5481 num_tc = 1; 5482 5483 for (i = 0; i < num_tc; i++) { 5484 hw->fc.high_water[i] = ixgbe_hpbthresh(adapter, i); 5485 hw->fc.low_water[i] = ixgbe_lpbthresh(adapter, i); 5486 5487 /* Low water marks must not be larger than high water marks */ 5488 if (hw->fc.low_water[i] > hw->fc.high_water[i]) 5489 hw->fc.low_water[i] = 0; 5490 } 5491 5492 for (; i < MAX_TRAFFIC_CLASS; i++) 5493 hw->fc.high_water[i] = 0; 5494 } 5495 5496 static void ixgbe_configure_pb(struct ixgbe_adapter *adapter) 5497 { 5498 struct ixgbe_hw *hw = &adapter->hw; 5499 int hdrm; 5500 u8 tc = adapter->hw_tcs; 5501 5502 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE || 5503 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) 5504 hdrm = 32 << adapter->fdir_pballoc; 5505 else 5506 hdrm = 0; 5507 5508 hw->mac.ops.set_rxpba(hw, tc, hdrm, PBA_STRATEGY_EQUAL); 5509 ixgbe_pbthresh_setup(adapter); 5510 } 5511 5512 static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter) 5513 { 5514 struct ixgbe_hw *hw = &adapter->hw; 5515 struct hlist_node *node2; 5516 struct ixgbe_fdir_filter *filter; 5517 u8 queue; 5518 5519 spin_lock(&adapter->fdir_perfect_lock); 5520 5521 if (!hlist_empty(&adapter->fdir_filter_list)) 5522 ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask); 5523 5524 hlist_for_each_entry_safe(filter, node2, 5525 &adapter->fdir_filter_list, fdir_node) { 5526 if (filter->action == IXGBE_FDIR_DROP_QUEUE) { 5527 queue = IXGBE_FDIR_DROP_QUEUE; 5528 } else { 5529 u32 ring = ethtool_get_flow_spec_ring(filter->action); 5530 u8 vf = ethtool_get_flow_spec_ring_vf(filter->action); 5531 5532 if (!vf && (ring >= adapter->num_rx_queues)) { 5533 e_err(drv, "FDIR restore failed without VF, ring: %u\n", 5534 ring); 5535 continue; 5536 } else if (vf && 5537 ((vf > adapter->num_vfs) || 5538 ring >= adapter->num_rx_queues_per_pool)) { 5539 e_err(drv, "FDIR restore failed with VF, vf: %hhu, ring: %u\n", 5540 vf, ring); 5541 continue; 5542 } 5543 5544 /* Map the ring onto the absolute queue index */ 5545 if (!vf) 5546 queue = adapter->rx_ring[ring]->reg_idx; 5547 else 5548 queue = ((vf - 1) * 5549 adapter->num_rx_queues_per_pool) + ring; 5550 } 5551 5552 ixgbe_fdir_write_perfect_filter_82599(hw, 5553 &filter->filter, filter->sw_idx, queue); 5554 } 5555 5556 spin_unlock(&adapter->fdir_perfect_lock); 5557 } 5558 5559 /** 5560 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue 5561 * @rx_ring: ring to free buffers from 5562 **/ 5563 static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring) 5564 { 5565 u16 i = rx_ring->next_to_clean; 5566 struct ixgbe_rx_buffer *rx_buffer = &rx_ring->rx_buffer_info[i]; 5567 5568 if (rx_ring->xsk_pool) { 5569 ixgbe_xsk_clean_rx_ring(rx_ring); 5570 goto skip_free; 5571 } 5572 5573 /* Free all the Rx ring sk_buffs */ 5574 while (i != rx_ring->next_to_alloc) { 5575 if (rx_buffer->skb) { 5576 struct sk_buff *skb = rx_buffer->skb; 5577 if (IXGBE_CB(skb)->page_released) 5578 dma_unmap_page_attrs(rx_ring->dev, 5579 IXGBE_CB(skb)->dma, 5580 ixgbe_rx_pg_size(rx_ring), 5581 DMA_FROM_DEVICE, 5582 IXGBE_RX_DMA_ATTR); 5583 dev_kfree_skb(skb); 5584 } 5585 5586 /* Invalidate cache lines that may have been written to by 5587 * device so that we avoid corrupting memory. 5588 */ 5589 dma_sync_single_range_for_cpu(rx_ring->dev, 5590 rx_buffer->dma, 5591 rx_buffer->page_offset, 5592 ixgbe_rx_bufsz(rx_ring), 5593 DMA_FROM_DEVICE); 5594 5595 /* free resources associated with mapping */ 5596 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, 5597 ixgbe_rx_pg_size(rx_ring), 5598 DMA_FROM_DEVICE, 5599 IXGBE_RX_DMA_ATTR); 5600 __page_frag_cache_drain(rx_buffer->page, 5601 rx_buffer->pagecnt_bias); 5602 5603 i++; 5604 rx_buffer++; 5605 if (i == rx_ring->count) { 5606 i = 0; 5607 rx_buffer = rx_ring->rx_buffer_info; 5608 } 5609 } 5610 5611 skip_free: 5612 rx_ring->next_to_alloc = 0; 5613 rx_ring->next_to_clean = 0; 5614 rx_ring->next_to_use = 0; 5615 } 5616 5617 static int ixgbe_fwd_ring_up(struct ixgbe_adapter *adapter, 5618 struct ixgbe_fwd_adapter *accel) 5619 { 5620 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; 5621 int num_tc = netdev_get_num_tc(adapter->netdev); 5622 struct net_device *vdev = accel->netdev; 5623 int i, baseq, err; 5624 5625 baseq = accel->pool * adapter->num_rx_queues_per_pool; 5626 netdev_dbg(vdev, "pool %i:%i queues %i:%i\n", 5627 accel->pool, adapter->num_rx_pools, 5628 baseq, baseq + adapter->num_rx_queues_per_pool); 5629 5630 accel->rx_base_queue = baseq; 5631 accel->tx_base_queue = baseq; 5632 5633 /* record configuration for macvlan interface in vdev */ 5634 for (i = 0; i < num_tc; i++) 5635 netdev_bind_sb_channel_queue(adapter->netdev, vdev, 5636 i, rss_i, baseq + (rss_i * i)); 5637 5638 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) 5639 adapter->rx_ring[baseq + i]->netdev = vdev; 5640 5641 /* Guarantee all rings are updated before we update the 5642 * MAC address filter. 5643 */ 5644 wmb(); 5645 5646 /* ixgbe_add_mac_filter will return an index if it succeeds, so we 5647 * need to only treat it as an error value if it is negative. 5648 */ 5649 err = ixgbe_add_mac_filter(adapter, vdev->dev_addr, 5650 VMDQ_P(accel->pool)); 5651 if (err >= 0) 5652 return 0; 5653 5654 /* if we cannot add the MAC rule then disable the offload */ 5655 macvlan_release_l2fw_offload(vdev); 5656 5657 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) 5658 adapter->rx_ring[baseq + i]->netdev = NULL; 5659 5660 netdev_err(vdev, "L2FW offload disabled due to L2 filter error\n"); 5661 5662 /* unbind the queues and drop the subordinate channel config */ 5663 netdev_unbind_sb_channel(adapter->netdev, vdev); 5664 netdev_set_sb_channel(vdev, 0); 5665 5666 clear_bit(accel->pool, adapter->fwd_bitmask); 5667 kfree(accel); 5668 5669 return err; 5670 } 5671 5672 static int ixgbe_macvlan_up(struct net_device *vdev, 5673 struct netdev_nested_priv *priv) 5674 { 5675 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)priv->data; 5676 struct ixgbe_fwd_adapter *accel; 5677 5678 if (!netif_is_macvlan(vdev)) 5679 return 0; 5680 5681 accel = macvlan_accel_priv(vdev); 5682 if (!accel) 5683 return 0; 5684 5685 ixgbe_fwd_ring_up(adapter, accel); 5686 5687 return 0; 5688 } 5689 5690 static void ixgbe_configure_dfwd(struct ixgbe_adapter *adapter) 5691 { 5692 struct netdev_nested_priv priv = { 5693 .data = (void *)adapter, 5694 }; 5695 5696 netdev_walk_all_upper_dev_rcu(adapter->netdev, 5697 ixgbe_macvlan_up, &priv); 5698 } 5699 5700 static void ixgbe_configure(struct ixgbe_adapter *adapter) 5701 { 5702 struct ixgbe_hw *hw = &adapter->hw; 5703 5704 ixgbe_configure_pb(adapter); 5705 #ifdef CONFIG_IXGBE_DCB 5706 ixgbe_configure_dcb(adapter); 5707 #endif 5708 /* 5709 * We must restore virtualization before VLANs or else 5710 * the VLVF registers will not be populated 5711 */ 5712 ixgbe_configure_virtualization(adapter); 5713 5714 ixgbe_set_rx_mode(adapter->netdev); 5715 ixgbe_restore_vlan(adapter); 5716 ixgbe_ipsec_restore(adapter); 5717 5718 switch (hw->mac.type) { 5719 case ixgbe_mac_82599EB: 5720 case ixgbe_mac_X540: 5721 hw->mac.ops.disable_rx_buff(hw); 5722 break; 5723 default: 5724 break; 5725 } 5726 5727 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 5728 ixgbe_init_fdir_signature_82599(&adapter->hw, 5729 adapter->fdir_pballoc); 5730 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) { 5731 ixgbe_init_fdir_perfect_82599(&adapter->hw, 5732 adapter->fdir_pballoc); 5733 ixgbe_fdir_filter_restore(adapter); 5734 } 5735 5736 switch (hw->mac.type) { 5737 case ixgbe_mac_82599EB: 5738 case ixgbe_mac_X540: 5739 hw->mac.ops.enable_rx_buff(hw); 5740 break; 5741 default: 5742 break; 5743 } 5744 5745 #ifdef CONFIG_IXGBE_DCA 5746 /* configure DCA */ 5747 if (adapter->flags & IXGBE_FLAG_DCA_CAPABLE) 5748 ixgbe_setup_dca(adapter); 5749 #endif /* CONFIG_IXGBE_DCA */ 5750 5751 #ifdef IXGBE_FCOE 5752 /* configure FCoE L2 filters, redirection table, and Rx control */ 5753 ixgbe_configure_fcoe(adapter); 5754 5755 #endif /* IXGBE_FCOE */ 5756 ixgbe_configure_tx(adapter); 5757 ixgbe_configure_rx(adapter); 5758 ixgbe_configure_dfwd(adapter); 5759 } 5760 5761 /** 5762 * ixgbe_enable_link_status_events - enable link status events 5763 * @adapter: pointer to the adapter structure 5764 * @mask: event mask to be set 5765 * 5766 * Enables link status events by invoking ixgbe_configure_lse() 5767 * 5768 * Return: the exit code of the operation. 5769 */ 5770 static int ixgbe_enable_link_status_events(struct ixgbe_adapter *adapter, 5771 u16 mask) 5772 { 5773 int err; 5774 5775 err = ixgbe_configure_lse(&adapter->hw, true, mask); 5776 if (err) 5777 return err; 5778 5779 adapter->lse_mask = mask; 5780 return 0; 5781 } 5782 5783 /** 5784 * ixgbe_disable_link_status_events - disable link status events 5785 * @adapter: pointer to the adapter structure 5786 * 5787 * Disables link status events by invoking ixgbe_configure_lse() 5788 * 5789 * Return: the exit code of the operation. 5790 */ 5791 static int ixgbe_disable_link_status_events(struct ixgbe_adapter *adapter) 5792 { 5793 int err; 5794 5795 err = ixgbe_configure_lse(&adapter->hw, false, adapter->lse_mask); 5796 if (err) 5797 return err; 5798 5799 adapter->lse_mask = 0; 5800 return 0; 5801 } 5802 5803 /** 5804 * ixgbe_sfp_link_config - set up SFP+ link 5805 * @adapter: pointer to private adapter struct 5806 **/ 5807 static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter) 5808 { 5809 /* 5810 * We are assuming the worst case scenario here, and that 5811 * is that an SFP was inserted/removed after the reset 5812 * but before SFP detection was enabled. As such the best 5813 * solution is to just start searching as soon as we start 5814 */ 5815 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 5816 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; 5817 5818 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 5819 adapter->sfp_poll_time = 0; 5820 } 5821 5822 /** 5823 * ixgbe_non_sfp_link_config - set up non-SFP+ link 5824 * @hw: pointer to private hardware struct 5825 * 5826 * Configure non-SFP link. 5827 * 5828 * Return: 0 on success, negative on failure 5829 **/ 5830 static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw) 5831 { 5832 struct ixgbe_adapter *adapter = container_of(hw, struct ixgbe_adapter, 5833 hw); 5834 u16 mask = ~((u16)(IXGBE_ACI_LINK_EVENT_UPDOWN | 5835 IXGBE_ACI_LINK_EVENT_MEDIA_NA | 5836 IXGBE_ACI_LINK_EVENT_MODULE_QUAL_FAIL | 5837 IXGBE_ACI_LINK_EVENT_PHY_FW_LOAD_FAIL)); 5838 bool autoneg, link_up = false; 5839 int ret = -EIO; 5840 u32 speed; 5841 5842 if (hw->mac.ops.check_link) 5843 ret = hw->mac.ops.check_link(hw, &speed, &link_up, false); 5844 5845 if (ret) 5846 return ret; 5847 5848 speed = hw->phy.autoneg_advertised; 5849 if (!speed && hw->mac.ops.get_link_capabilities) { 5850 ret = hw->mac.ops.get_link_capabilities(hw, &speed, 5851 &autoneg); 5852 /* remove NBASE-T speeds from default autonegotiation 5853 * to accommodate broken network switches in the field 5854 * which cannot cope with advertised NBASE-T speeds 5855 */ 5856 speed &= ~(IXGBE_LINK_SPEED_5GB_FULL | 5857 IXGBE_LINK_SPEED_2_5GB_FULL); 5858 } 5859 5860 if (ret) 5861 return ret; 5862 5863 if (hw->mac.ops.setup_link) { 5864 if (adapter->hw.mac.type == ixgbe_mac_e610) { 5865 ret = ixgbe_enable_link_status_events(adapter, mask); 5866 if (ret) 5867 return ret; 5868 } 5869 ret = hw->mac.ops.setup_link(hw, speed, link_up); 5870 } 5871 5872 return ret; 5873 } 5874 5875 /** 5876 * ixgbe_check_media_subtask - check for media 5877 * @adapter: pointer to adapter structure 5878 * 5879 * If media is available then initialize PHY user configuration. Configure the 5880 * PHY if the interface is up. 5881 */ 5882 static void ixgbe_check_media_subtask(struct ixgbe_adapter *adapter) 5883 { 5884 struct ixgbe_hw *hw = &adapter->hw; 5885 5886 /* No need to check for media if it's already present */ 5887 if (!(adapter->flags2 & IXGBE_FLAG2_NO_MEDIA)) 5888 return; 5889 5890 /* Refresh link info and check if media is present */ 5891 if (ixgbe_update_link_info(hw)) 5892 return; 5893 5894 ixgbe_check_link_cfg_err(adapter, hw->link.link_info.link_cfg_err); 5895 5896 if (hw->link.link_info.link_info & IXGBE_ACI_MEDIA_AVAILABLE) { 5897 /* PHY settings are reset on media insertion, reconfigure 5898 * PHY to preserve settings. 5899 */ 5900 if (!(ixgbe_non_sfp_link_config(&adapter->hw))) 5901 adapter->flags2 &= ~IXGBE_FLAG2_NO_MEDIA; 5902 5903 /* A Link Status Event will be generated; the event handler 5904 * will complete bringing the interface up 5905 */ 5906 } 5907 } 5908 5909 /** 5910 * ixgbe_clear_vf_stats_counters - Clear out VF stats after reset 5911 * @adapter: board private structure 5912 * 5913 * On a reset we need to clear out the VF stats or accounting gets 5914 * messed up because they're not clear on read. 5915 **/ 5916 static void ixgbe_clear_vf_stats_counters(struct ixgbe_adapter *adapter) 5917 { 5918 struct ixgbe_hw *hw = &adapter->hw; 5919 int i; 5920 5921 for (i = 0; i < adapter->num_vfs; i++) { 5922 adapter->vfinfo[i].last_vfstats.gprc = 5923 IXGBE_READ_REG(hw, IXGBE_PVFGPRC(i)); 5924 adapter->vfinfo[i].saved_rst_vfstats.gprc += 5925 adapter->vfinfo[i].vfstats.gprc; 5926 adapter->vfinfo[i].vfstats.gprc = 0; 5927 adapter->vfinfo[i].last_vfstats.gptc = 5928 IXGBE_READ_REG(hw, IXGBE_PVFGPTC(i)); 5929 adapter->vfinfo[i].saved_rst_vfstats.gptc += 5930 adapter->vfinfo[i].vfstats.gptc; 5931 adapter->vfinfo[i].vfstats.gptc = 0; 5932 adapter->vfinfo[i].last_vfstats.gorc = 5933 IXGBE_READ_REG(hw, IXGBE_PVFGORC_LSB(i)); 5934 adapter->vfinfo[i].saved_rst_vfstats.gorc += 5935 adapter->vfinfo[i].vfstats.gorc; 5936 adapter->vfinfo[i].vfstats.gorc = 0; 5937 adapter->vfinfo[i].last_vfstats.gotc = 5938 IXGBE_READ_REG(hw, IXGBE_PVFGOTC_LSB(i)); 5939 adapter->vfinfo[i].saved_rst_vfstats.gotc += 5940 adapter->vfinfo[i].vfstats.gotc; 5941 adapter->vfinfo[i].vfstats.gotc = 0; 5942 adapter->vfinfo[i].last_vfstats.mprc = 5943 IXGBE_READ_REG(hw, IXGBE_PVFMPRC(i)); 5944 adapter->vfinfo[i].saved_rst_vfstats.mprc += 5945 adapter->vfinfo[i].vfstats.mprc; 5946 adapter->vfinfo[i].vfstats.mprc = 0; 5947 } 5948 } 5949 5950 static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter) 5951 { 5952 struct ixgbe_hw *hw = &adapter->hw; 5953 u32 gpie = 0; 5954 5955 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { 5956 gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT | 5957 IXGBE_GPIE_OCD; 5958 gpie |= IXGBE_GPIE_EIAME; 5959 /* 5960 * use EIAM to auto-mask when MSI-X interrupt is asserted 5961 * this saves a register write for every interrupt 5962 */ 5963 switch (hw->mac.type) { 5964 case ixgbe_mac_82598EB: 5965 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); 5966 break; 5967 case ixgbe_mac_82599EB: 5968 case ixgbe_mac_X540: 5969 case ixgbe_mac_X550: 5970 case ixgbe_mac_X550EM_x: 5971 case ixgbe_mac_x550em_a: 5972 case ixgbe_mac_e610: 5973 default: 5974 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF); 5975 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF); 5976 break; 5977 } 5978 } else { 5979 /* legacy interrupts, use EIAM to auto-mask when reading EICR, 5980 * specifically only auto mask tx and rx interrupts */ 5981 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); 5982 } 5983 5984 /* XXX: to interrupt immediately for EICS writes, enable this */ 5985 /* gpie |= IXGBE_GPIE_EIMEN; */ 5986 5987 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 5988 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 5989 5990 switch (adapter->ring_feature[RING_F_VMDQ].mask) { 5991 case IXGBE_82599_VMDQ_8Q_MASK: 5992 gpie |= IXGBE_GPIE_VTMODE_16; 5993 break; 5994 case IXGBE_82599_VMDQ_4Q_MASK: 5995 gpie |= IXGBE_GPIE_VTMODE_32; 5996 break; 5997 default: 5998 gpie |= IXGBE_GPIE_VTMODE_64; 5999 break; 6000 } 6001 } 6002 6003 /* Enable Thermal over heat sensor interrupt */ 6004 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) { 6005 switch (adapter->hw.mac.type) { 6006 case ixgbe_mac_82599EB: 6007 gpie |= IXGBE_SDP0_GPIEN_8259X; 6008 break; 6009 default: 6010 break; 6011 } 6012 } 6013 6014 /* Enable fan failure interrupt */ 6015 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) 6016 gpie |= IXGBE_SDP1_GPIEN(hw); 6017 6018 switch (hw->mac.type) { 6019 case ixgbe_mac_82599EB: 6020 gpie |= IXGBE_SDP1_GPIEN_8259X | IXGBE_SDP2_GPIEN_8259X; 6021 break; 6022 case ixgbe_mac_X550EM_x: 6023 case ixgbe_mac_x550em_a: 6024 gpie |= IXGBE_SDP0_GPIEN_X540; 6025 break; 6026 default: 6027 break; 6028 } 6029 6030 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 6031 } 6032 6033 static void ixgbe_up_complete(struct ixgbe_adapter *adapter) 6034 { 6035 struct ixgbe_hw *hw = &adapter->hw; 6036 int err; 6037 u32 ctrl_ext; 6038 6039 ixgbe_get_hw_control(adapter); 6040 ixgbe_setup_gpie(adapter); 6041 6042 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) 6043 ixgbe_configure_msix(adapter); 6044 else 6045 ixgbe_configure_msi_and_legacy(adapter); 6046 6047 /* enable the optics for 82599 SFP+ fiber */ 6048 if (hw->mac.ops.enable_tx_laser) 6049 hw->mac.ops.enable_tx_laser(hw); 6050 6051 if (hw->phy.ops.set_phy_power) 6052 hw->phy.ops.set_phy_power(hw, true); 6053 6054 smp_mb__before_atomic(); 6055 clear_bit(__IXGBE_DOWN, &adapter->state); 6056 ixgbe_napi_enable_all(adapter); 6057 6058 if (ixgbe_is_sfp(hw)) { 6059 ixgbe_sfp_link_config(adapter); 6060 } else { 6061 err = ixgbe_non_sfp_link_config(hw); 6062 if (err) 6063 e_err(probe, "link_config FAILED %d\n", err); 6064 } 6065 6066 /* clear any pending interrupts, may auto mask */ 6067 IXGBE_READ_REG(hw, IXGBE_EICR); 6068 ixgbe_irq_enable(adapter, true, true); 6069 6070 /* 6071 * If this adapter has a fan, check to see if we had a failure 6072 * before we enabled the interrupt. 6073 */ 6074 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { 6075 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); 6076 if (esdp & IXGBE_ESDP_SDP1) 6077 e_crit(drv, "Fan has stopped, replace the adapter\n"); 6078 } 6079 6080 /* bring the link up in the watchdog, this could race with our first 6081 * link up interrupt but shouldn't be a problem */ 6082 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 6083 adapter->link_check_timeout = jiffies; 6084 mod_timer(&adapter->service_timer, jiffies); 6085 6086 ixgbe_clear_vf_stats_counters(adapter); 6087 /* Set PF Reset Done bit so PF/VF Mail Ops can work */ 6088 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT); 6089 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD; 6090 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext); 6091 6092 /* update setting rx tx for all active vfs */ 6093 ixgbe_set_all_vfs(adapter); 6094 } 6095 6096 void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) 6097 { 6098 /* put off any impending NetWatchDogTimeout */ 6099 netif_trans_update(adapter->netdev); 6100 6101 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) 6102 usleep_range(1000, 2000); 6103 if (adapter->hw.phy.type == ixgbe_phy_fw) 6104 ixgbe_watchdog_link_is_down(adapter); 6105 ixgbe_down(adapter); 6106 /* 6107 * If SR-IOV enabled then wait a bit before bringing the adapter 6108 * back up to give the VFs time to respond to the reset. The 6109 * two second wait is based upon the watchdog timer cycle in 6110 * the VF driver. 6111 */ 6112 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 6113 msleep(2000); 6114 ixgbe_up(adapter); 6115 clear_bit(__IXGBE_RESETTING, &adapter->state); 6116 } 6117 6118 void ixgbe_up(struct ixgbe_adapter *adapter) 6119 { 6120 /* hardware has been reset, we need to reload some things */ 6121 ixgbe_configure(adapter); 6122 6123 ixgbe_up_complete(adapter); 6124 } 6125 6126 static unsigned long ixgbe_get_completion_timeout(struct ixgbe_adapter *adapter) 6127 { 6128 u16 devctl2; 6129 6130 pcie_capability_read_word(adapter->pdev, PCI_EXP_DEVCTL2, &devctl2); 6131 6132 switch (devctl2 & IXGBE_PCIDEVCTRL2_TIMEO_MASK) { 6133 case IXGBE_PCIDEVCTRL2_17_34s: 6134 case IXGBE_PCIDEVCTRL2_4_8s: 6135 /* For now we cap the upper limit on delay to 2 seconds 6136 * as we end up going up to 34 seconds of delay in worst 6137 * case timeout value. 6138 */ 6139 case IXGBE_PCIDEVCTRL2_1_2s: 6140 return 2000000ul; /* 2.0 s */ 6141 case IXGBE_PCIDEVCTRL2_260_520ms: 6142 return 520000ul; /* 520 ms */ 6143 case IXGBE_PCIDEVCTRL2_65_130ms: 6144 return 130000ul; /* 130 ms */ 6145 case IXGBE_PCIDEVCTRL2_16_32ms: 6146 return 32000ul; /* 32 ms */ 6147 case IXGBE_PCIDEVCTRL2_1_2ms: 6148 return 2000ul; /* 2 ms */ 6149 case IXGBE_PCIDEVCTRL2_50_100us: 6150 return 100ul; /* 100 us */ 6151 case IXGBE_PCIDEVCTRL2_16_32ms_def: 6152 return 32000ul; /* 32 ms */ 6153 default: 6154 break; 6155 } 6156 6157 /* We shouldn't need to hit this path, but just in case default as 6158 * though completion timeout is not supported and support 32ms. 6159 */ 6160 return 32000ul; 6161 } 6162 6163 void ixgbe_disable_rx(struct ixgbe_adapter *adapter) 6164 { 6165 unsigned long wait_delay, delay_interval; 6166 struct ixgbe_hw *hw = &adapter->hw; 6167 int i, wait_loop; 6168 u32 rxdctl; 6169 6170 /* disable receives */ 6171 hw->mac.ops.disable_rx(hw); 6172 6173 if (ixgbe_removed(hw->hw_addr)) 6174 return; 6175 6176 /* disable all enabled Rx queues */ 6177 for (i = 0; i < adapter->num_rx_queues; i++) { 6178 struct ixgbe_ring *ring = adapter->rx_ring[i]; 6179 u8 reg_idx = ring->reg_idx; 6180 6181 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 6182 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 6183 rxdctl |= IXGBE_RXDCTL_SWFLSH; 6184 6185 /* write value back with RXDCTL.ENABLE bit cleared */ 6186 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 6187 } 6188 6189 /* RXDCTL.EN may not change on 82598 if link is down, so skip it */ 6190 if (hw->mac.type == ixgbe_mac_82598EB && 6191 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 6192 return; 6193 6194 /* Determine our minimum delay interval. We will increase this value 6195 * with each subsequent test. This way if the device returns quickly 6196 * we should spend as little time as possible waiting, however as 6197 * the time increases we will wait for larger periods of time. 6198 * 6199 * The trick here is that we increase the interval using the 6200 * following pattern: 1x 3x 5x 7x 9x 11x 13x 15x 17x 19x. The result 6201 * of that wait is that it totals up to 100x whatever interval we 6202 * choose. Since our minimum wait is 100us we can just divide the 6203 * total timeout by 100 to get our minimum delay interval. 6204 */ 6205 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 6206 6207 wait_loop = IXGBE_MAX_RX_DESC_POLL; 6208 wait_delay = delay_interval; 6209 6210 while (wait_loop--) { 6211 usleep_range(wait_delay, wait_delay + 10); 6212 wait_delay += delay_interval * 2; 6213 rxdctl = 0; 6214 6215 /* OR together the reading of all the active RXDCTL registers, 6216 * and then test the result. We need the disable to complete 6217 * before we start freeing the memory and invalidating the 6218 * DMA mappings. 6219 */ 6220 for (i = 0; i < adapter->num_rx_queues; i++) { 6221 struct ixgbe_ring *ring = adapter->rx_ring[i]; 6222 u8 reg_idx = ring->reg_idx; 6223 6224 rxdctl |= IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 6225 } 6226 6227 if (!(rxdctl & IXGBE_RXDCTL_ENABLE)) 6228 return; 6229 } 6230 6231 e_err(drv, 6232 "RXDCTL.ENABLE for one or more queues not cleared within the polling period\n"); 6233 } 6234 6235 void ixgbe_disable_tx(struct ixgbe_adapter *adapter) 6236 { 6237 unsigned long wait_delay, delay_interval; 6238 struct ixgbe_hw *hw = &adapter->hw; 6239 int i, wait_loop; 6240 u32 txdctl; 6241 6242 if (ixgbe_removed(hw->hw_addr)) 6243 return; 6244 6245 /* disable all enabled Tx queues */ 6246 for (i = 0; i < adapter->num_tx_queues; i++) { 6247 struct ixgbe_ring *ring = adapter->tx_ring[i]; 6248 u8 reg_idx = ring->reg_idx; 6249 6250 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 6251 } 6252 6253 /* disable all enabled XDP Tx queues */ 6254 for (i = 0; i < adapter->num_xdp_queues; i++) { 6255 struct ixgbe_ring *ring = adapter->xdp_ring[i]; 6256 u8 reg_idx = ring->reg_idx; 6257 6258 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 6259 } 6260 6261 /* If the link is not up there shouldn't be much in the way of 6262 * pending transactions. Those that are left will be flushed out 6263 * when the reset logic goes through the flush sequence to clean out 6264 * the pending Tx transactions. 6265 */ 6266 if (!(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 6267 goto dma_engine_disable; 6268 6269 /* Determine our minimum delay interval. We will increase this value 6270 * with each subsequent test. This way if the device returns quickly 6271 * we should spend as little time as possible waiting, however as 6272 * the time increases we will wait for larger periods of time. 6273 * 6274 * The trick here is that we increase the interval using the 6275 * following pattern: 1x 3x 5x 7x 9x 11x 13x 15x 17x 19x. The result 6276 * of that wait is that it totals up to 100x whatever interval we 6277 * choose. Since our minimum wait is 100us we can just divide the 6278 * total timeout by 100 to get our minimum delay interval. 6279 */ 6280 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 6281 6282 wait_loop = IXGBE_MAX_RX_DESC_POLL; 6283 wait_delay = delay_interval; 6284 6285 while (wait_loop--) { 6286 usleep_range(wait_delay, wait_delay + 10); 6287 wait_delay += delay_interval * 2; 6288 txdctl = 0; 6289 6290 /* OR together the reading of all the active TXDCTL registers, 6291 * and then test the result. We need the disable to complete 6292 * before we start freeing the memory and invalidating the 6293 * DMA mappings. 6294 */ 6295 for (i = 0; i < adapter->num_tx_queues; i++) { 6296 struct ixgbe_ring *ring = adapter->tx_ring[i]; 6297 u8 reg_idx = ring->reg_idx; 6298 6299 txdctl |= IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 6300 } 6301 for (i = 0; i < adapter->num_xdp_queues; i++) { 6302 struct ixgbe_ring *ring = adapter->xdp_ring[i]; 6303 u8 reg_idx = ring->reg_idx; 6304 6305 txdctl |= IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 6306 } 6307 6308 if (!(txdctl & IXGBE_TXDCTL_ENABLE)) 6309 goto dma_engine_disable; 6310 } 6311 6312 e_err(drv, 6313 "TXDCTL.ENABLE for one or more queues not cleared within the polling period\n"); 6314 6315 dma_engine_disable: 6316 /* Disable the Tx DMA engine on 82599 and later MAC */ 6317 switch (hw->mac.type) { 6318 case ixgbe_mac_82599EB: 6319 case ixgbe_mac_X540: 6320 case ixgbe_mac_X550: 6321 case ixgbe_mac_X550EM_x: 6322 case ixgbe_mac_x550em_a: 6323 case ixgbe_mac_e610: 6324 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, 6325 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) & 6326 ~IXGBE_DMATXCTL_TE)); 6327 fallthrough; 6328 default: 6329 break; 6330 } 6331 } 6332 6333 void ixgbe_reset(struct ixgbe_adapter *adapter) 6334 { 6335 struct ixgbe_hw *hw = &adapter->hw; 6336 struct net_device *netdev = adapter->netdev; 6337 int err; 6338 6339 if (ixgbe_removed(hw->hw_addr)) 6340 return; 6341 /* lock SFP init bit to prevent race conditions with the watchdog */ 6342 while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 6343 usleep_range(1000, 2000); 6344 6345 /* clear all SFP and link config related flags while holding SFP_INIT */ 6346 adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP | 6347 IXGBE_FLAG2_SFP_NEEDS_RESET); 6348 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; 6349 6350 err = hw->mac.ops.init_hw(hw); 6351 switch (err) { 6352 case 0: 6353 case -ENOENT: 6354 case -EOPNOTSUPP: 6355 break; 6356 case -EALREADY: 6357 e_dev_err("primary disable timed out\n"); 6358 break; 6359 case -EACCES: 6360 /* We are running on a pre-production device, log a warning */ 6361 e_dev_warn("This device is a pre-production adapter/LOM. " 6362 "Please be aware there may be issues associated with " 6363 "your hardware. If you are experiencing problems " 6364 "please contact your Intel or hardware " 6365 "representative who provided you with this " 6366 "hardware.\n"); 6367 break; 6368 default: 6369 e_dev_err("Hardware Error: %d\n", err); 6370 } 6371 6372 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 6373 6374 /* flush entries out of MAC table */ 6375 ixgbe_flush_sw_mac_table(adapter); 6376 __dev_uc_unsync(netdev, NULL); 6377 6378 /* do not flush user set addresses */ 6379 ixgbe_mac_set_default_filter(adapter); 6380 6381 /* update SAN MAC vmdq pool selection */ 6382 if (hw->mac.san_mac_rar_index) 6383 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0)); 6384 6385 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 6386 ixgbe_ptp_reset(adapter); 6387 6388 if (hw->phy.ops.set_phy_power) { 6389 if (!netif_running(adapter->netdev) && !adapter->wol) 6390 hw->phy.ops.set_phy_power(hw, false); 6391 else 6392 hw->phy.ops.set_phy_power(hw, true); 6393 } 6394 } 6395 6396 /** 6397 * ixgbe_clean_tx_ring - Free Tx Buffers 6398 * @tx_ring: ring to be cleaned 6399 **/ 6400 static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring) 6401 { 6402 u16 i = tx_ring->next_to_clean; 6403 struct ixgbe_tx_buffer *tx_buffer = &tx_ring->tx_buffer_info[i]; 6404 6405 if (tx_ring->xsk_pool) { 6406 ixgbe_xsk_clean_tx_ring(tx_ring); 6407 goto out; 6408 } 6409 6410 while (i != tx_ring->next_to_use) { 6411 union ixgbe_adv_tx_desc *eop_desc, *tx_desc; 6412 6413 /* Free all the Tx ring sk_buffs */ 6414 if (ring_is_xdp(tx_ring)) 6415 xdp_return_frame(tx_buffer->xdpf); 6416 else 6417 dev_kfree_skb_any(tx_buffer->skb); 6418 6419 /* unmap skb header data */ 6420 dma_unmap_single(tx_ring->dev, 6421 dma_unmap_addr(tx_buffer, dma), 6422 dma_unmap_len(tx_buffer, len), 6423 DMA_TO_DEVICE); 6424 6425 /* check for eop_desc to determine the end of the packet */ 6426 eop_desc = tx_buffer->next_to_watch; 6427 tx_desc = IXGBE_TX_DESC(tx_ring, i); 6428 6429 /* unmap remaining buffers */ 6430 while (tx_desc != eop_desc) { 6431 tx_buffer++; 6432 tx_desc++; 6433 i++; 6434 if (unlikely(i == tx_ring->count)) { 6435 i = 0; 6436 tx_buffer = tx_ring->tx_buffer_info; 6437 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 6438 } 6439 6440 /* unmap any remaining paged data */ 6441 if (dma_unmap_len(tx_buffer, len)) 6442 dma_unmap_page(tx_ring->dev, 6443 dma_unmap_addr(tx_buffer, dma), 6444 dma_unmap_len(tx_buffer, len), 6445 DMA_TO_DEVICE); 6446 } 6447 6448 /* move us one more past the eop_desc for start of next pkt */ 6449 tx_buffer++; 6450 i++; 6451 if (unlikely(i == tx_ring->count)) { 6452 i = 0; 6453 tx_buffer = tx_ring->tx_buffer_info; 6454 } 6455 } 6456 6457 /* reset BQL for queue */ 6458 if (!ring_is_xdp(tx_ring)) 6459 netdev_tx_reset_queue(txring_txq(tx_ring)); 6460 6461 out: 6462 /* reset next_to_use and next_to_clean */ 6463 tx_ring->next_to_use = 0; 6464 tx_ring->next_to_clean = 0; 6465 } 6466 6467 /** 6468 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues 6469 * @adapter: board private structure 6470 **/ 6471 static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) 6472 { 6473 int i; 6474 6475 for (i = 0; i < adapter->num_rx_queues; i++) 6476 ixgbe_clean_rx_ring(adapter->rx_ring[i]); 6477 } 6478 6479 /** 6480 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues 6481 * @adapter: board private structure 6482 **/ 6483 static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) 6484 { 6485 int i; 6486 6487 for (i = 0; i < adapter->num_tx_queues; i++) 6488 ixgbe_clean_tx_ring(adapter->tx_ring[i]); 6489 for (i = 0; i < adapter->num_xdp_queues; i++) 6490 ixgbe_clean_tx_ring(adapter->xdp_ring[i]); 6491 } 6492 6493 static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter) 6494 { 6495 struct hlist_node *node2; 6496 struct ixgbe_fdir_filter *filter; 6497 6498 spin_lock(&adapter->fdir_perfect_lock); 6499 6500 hlist_for_each_entry_safe(filter, node2, 6501 &adapter->fdir_filter_list, fdir_node) { 6502 hlist_del(&filter->fdir_node); 6503 kfree(filter); 6504 } 6505 adapter->fdir_filter_count = 0; 6506 6507 spin_unlock(&adapter->fdir_perfect_lock); 6508 } 6509 6510 void ixgbe_down(struct ixgbe_adapter *adapter) 6511 { 6512 struct net_device *netdev = adapter->netdev; 6513 struct ixgbe_hw *hw = &adapter->hw; 6514 int i; 6515 6516 /* signal that we are down to the interrupt handler */ 6517 if (test_and_set_bit(__IXGBE_DOWN, &adapter->state)) 6518 return; /* do nothing if already down */ 6519 6520 /* Shut off incoming Tx traffic */ 6521 netif_tx_stop_all_queues(netdev); 6522 6523 /* call carrier off first to avoid false dev_watchdog timeouts */ 6524 netif_carrier_off(netdev); 6525 netif_tx_disable(netdev); 6526 6527 /* Disable Rx */ 6528 ixgbe_disable_rx(adapter); 6529 6530 /* synchronize_rcu() needed for pending XDP buffers to drain */ 6531 if (adapter->xdp_ring[0]) 6532 synchronize_rcu(); 6533 6534 ixgbe_irq_disable(adapter); 6535 6536 ixgbe_napi_disable_all(adapter); 6537 6538 clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 6539 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 6540 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; 6541 6542 timer_delete_sync(&adapter->service_timer); 6543 6544 if (adapter->num_vfs) { 6545 /* Clear EITR Select mapping */ 6546 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0); 6547 6548 /* Mark all the VFs as inactive */ 6549 for (i = 0 ; i < adapter->num_vfs; i++) 6550 adapter->vfinfo[i].clear_to_send = false; 6551 6552 /* update setting rx tx for all active vfs */ 6553 ixgbe_set_all_vfs(adapter); 6554 } 6555 6556 /* disable transmits in the hardware now that interrupts are off */ 6557 ixgbe_disable_tx(adapter); 6558 6559 if (!pci_channel_offline(adapter->pdev)) 6560 ixgbe_reset(adapter); 6561 6562 /* power down the optics for 82599 SFP+ fiber */ 6563 if (hw->mac.ops.disable_tx_laser) 6564 hw->mac.ops.disable_tx_laser(hw); 6565 6566 ixgbe_clean_all_tx_rings(adapter); 6567 ixgbe_clean_all_rx_rings(adapter); 6568 if (adapter->hw.mac.type == ixgbe_mac_e610) 6569 ixgbe_disable_link_status_events(adapter); 6570 } 6571 6572 /** 6573 * ixgbe_set_eee_capable - helper function to determine EEE support on X550 6574 * @adapter: board private structure 6575 */ 6576 static void ixgbe_set_eee_capable(struct ixgbe_adapter *adapter) 6577 { 6578 struct ixgbe_hw *hw = &adapter->hw; 6579 6580 switch (hw->device_id) { 6581 case IXGBE_DEV_ID_X550EM_A_1G_T: 6582 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 6583 if (!hw->phy.eee_speeds_supported) 6584 break; 6585 adapter->flags2 |= IXGBE_FLAG2_EEE_CAPABLE; 6586 if (!hw->phy.eee_speeds_advertised) 6587 break; 6588 adapter->flags2 |= IXGBE_FLAG2_EEE_ENABLED; 6589 break; 6590 default: 6591 adapter->flags2 &= ~IXGBE_FLAG2_EEE_CAPABLE; 6592 adapter->flags2 &= ~IXGBE_FLAG2_EEE_ENABLED; 6593 break; 6594 } 6595 } 6596 6597 /** 6598 * ixgbe_tx_timeout - Respond to a Tx Hang 6599 * @netdev: network interface device structure 6600 * @txqueue: queue number that timed out 6601 **/ 6602 static void ixgbe_tx_timeout(struct net_device *netdev, unsigned int __always_unused txqueue) 6603 { 6604 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 6605 6606 /* Do the reset outside of interrupt context */ 6607 ixgbe_tx_timeout_reset(adapter); 6608 } 6609 6610 #ifdef CONFIG_IXGBE_DCB 6611 static void ixgbe_init_dcb(struct ixgbe_adapter *adapter) 6612 { 6613 struct ixgbe_hw *hw = &adapter->hw; 6614 struct tc_configuration *tc; 6615 int j; 6616 6617 switch (hw->mac.type) { 6618 case ixgbe_mac_82598EB: 6619 case ixgbe_mac_82599EB: 6620 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 6621 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 6622 break; 6623 case ixgbe_mac_X540: 6624 case ixgbe_mac_X550: 6625 case ixgbe_mac_e610: 6626 adapter->dcb_cfg.num_tcs.pg_tcs = X540_TRAFFIC_CLASS; 6627 adapter->dcb_cfg.num_tcs.pfc_tcs = X540_TRAFFIC_CLASS; 6628 break; 6629 case ixgbe_mac_X550EM_x: 6630 case ixgbe_mac_x550em_a: 6631 default: 6632 adapter->dcb_cfg.num_tcs.pg_tcs = DEF_TRAFFIC_CLASS; 6633 adapter->dcb_cfg.num_tcs.pfc_tcs = DEF_TRAFFIC_CLASS; 6634 break; 6635 } 6636 6637 /* Configure DCB traffic classes */ 6638 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) { 6639 tc = &adapter->dcb_cfg.tc_config[j]; 6640 tc->path[DCB_TX_CONFIG].bwg_id = 0; 6641 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1); 6642 tc->path[DCB_RX_CONFIG].bwg_id = 0; 6643 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1); 6644 tc->dcb_pfc = pfc_disabled; 6645 } 6646 6647 /* Initialize default user to priority mapping, UPx->TC0 */ 6648 tc = &adapter->dcb_cfg.tc_config[0]; 6649 tc->path[DCB_TX_CONFIG].up_to_tc_bitmap = 0xFF; 6650 tc->path[DCB_RX_CONFIG].up_to_tc_bitmap = 0xFF; 6651 6652 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100; 6653 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100; 6654 adapter->dcb_cfg.pfc_mode_enable = false; 6655 adapter->dcb_set_bitmap = 0x00; 6656 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE) 6657 adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE; 6658 memcpy(&adapter->temp_dcb_cfg, &adapter->dcb_cfg, 6659 sizeof(adapter->temp_dcb_cfg)); 6660 } 6661 #endif 6662 6663 /** 6664 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) 6665 * @adapter: board private structure to initialize 6666 * @ii: pointer to ixgbe_info for device 6667 * 6668 * ixgbe_sw_init initializes the Adapter private data structure. 6669 * Fields are initialized based on PCI device information and 6670 * OS network device settings (MTU size). 6671 **/ 6672 static int ixgbe_sw_init(struct ixgbe_adapter *adapter, 6673 const struct ixgbe_info *ii) 6674 { 6675 struct ixgbe_hw *hw = &adapter->hw; 6676 struct pci_dev *pdev = adapter->pdev; 6677 unsigned int rss, fdir; 6678 u32 fwsm; 6679 int i; 6680 6681 /* PCI config space info */ 6682 6683 hw->vendor_id = pdev->vendor; 6684 hw->device_id = pdev->device; 6685 hw->revision_id = pdev->revision; 6686 hw->subsystem_vendor_id = pdev->subsystem_vendor; 6687 hw->subsystem_device_id = pdev->subsystem_device; 6688 6689 hw->mac.max_link_up_time = IXGBE_LINK_UP_TIME; 6690 6691 /* get_invariants needs the device IDs */ 6692 ii->get_invariants(hw); 6693 6694 /* Set common capability flags and settings */ 6695 rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus()); 6696 adapter->ring_feature[RING_F_RSS].limit = rss; 6697 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE; 6698 adapter->max_q_vectors = MAX_Q_VECTORS_82599; 6699 adapter->atr_sample_rate = 20; 6700 fdir = min_t(int, IXGBE_MAX_FDIR_INDICES, num_online_cpus()); 6701 adapter->ring_feature[RING_F_FDIR].limit = fdir; 6702 adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K; 6703 adapter->ring_feature[RING_F_VMDQ].limit = 1; 6704 #ifdef CONFIG_IXGBE_DCA 6705 adapter->flags |= IXGBE_FLAG_DCA_CAPABLE; 6706 #endif 6707 #ifdef CONFIG_IXGBE_DCB 6708 adapter->flags |= IXGBE_FLAG_DCB_CAPABLE; 6709 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; 6710 #endif 6711 #ifdef IXGBE_FCOE 6712 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE; 6713 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; 6714 #ifdef CONFIG_IXGBE_DCB 6715 /* Default traffic class to use for FCoE */ 6716 adapter->fcoe.up = IXGBE_FCOE_DEFTC; 6717 #endif /* CONFIG_IXGBE_DCB */ 6718 #endif /* IXGBE_FCOE */ 6719 6720 /* initialize static ixgbe jump table entries */ 6721 adapter->jump_tables[0] = kzalloc(sizeof(*adapter->jump_tables[0]), 6722 GFP_KERNEL); 6723 if (!adapter->jump_tables[0]) 6724 return -ENOMEM; 6725 adapter->jump_tables[0]->mat = ixgbe_ipv4_fields; 6726 6727 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) 6728 adapter->jump_tables[i] = NULL; 6729 6730 adapter->mac_table = kcalloc(hw->mac.num_rar_entries, 6731 sizeof(struct ixgbe_mac_addr), 6732 GFP_KERNEL); 6733 if (!adapter->mac_table) 6734 return -ENOMEM; 6735 6736 if (ixgbe_init_rss_key(adapter)) 6737 return -ENOMEM; 6738 6739 adapter->af_xdp_zc_qps = bitmap_zalloc(IXGBE_MAX_XDP_QS, GFP_KERNEL); 6740 if (!adapter->af_xdp_zc_qps) 6741 return -ENOMEM; 6742 6743 /* Set MAC specific capability flags and exceptions */ 6744 switch (hw->mac.type) { 6745 case ixgbe_mac_82598EB: 6746 adapter->flags2 &= ~IXGBE_FLAG2_RSC_CAPABLE; 6747 6748 if (hw->device_id == IXGBE_DEV_ID_82598AT) 6749 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE; 6750 6751 adapter->max_q_vectors = MAX_Q_VECTORS_82598; 6752 adapter->ring_feature[RING_F_FDIR].limit = 0; 6753 adapter->atr_sample_rate = 0; 6754 adapter->fdir_pballoc = 0; 6755 #ifdef IXGBE_FCOE 6756 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 6757 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; 6758 #ifdef CONFIG_IXGBE_DCB 6759 adapter->fcoe.up = 0; 6760 #endif /* IXGBE_DCB */ 6761 #endif /* IXGBE_FCOE */ 6762 break; 6763 case ixgbe_mac_82599EB: 6764 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM) 6765 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6766 break; 6767 case ixgbe_mac_X540: 6768 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw)); 6769 if (fwsm & IXGBE_FWSM_TS_ENABLED) 6770 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6771 break; 6772 case ixgbe_mac_x550em_a: 6773 switch (hw->device_id) { 6774 case IXGBE_DEV_ID_X550EM_A_1G_T: 6775 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 6776 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6777 break; 6778 default: 6779 break; 6780 } 6781 fallthrough; 6782 case ixgbe_mac_X550EM_x: 6783 #ifdef CONFIG_IXGBE_DCB 6784 adapter->flags &= ~IXGBE_FLAG_DCB_CAPABLE; 6785 #endif 6786 #ifdef IXGBE_FCOE 6787 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 6788 #ifdef CONFIG_IXGBE_DCB 6789 adapter->fcoe.up = 0; 6790 #endif /* IXGBE_DCB */ 6791 #endif /* IXGBE_FCOE */ 6792 fallthrough; 6793 case ixgbe_mac_X550: 6794 if (hw->mac.type == ixgbe_mac_X550) 6795 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6796 #ifdef CONFIG_IXGBE_DCA 6797 adapter->flags &= ~IXGBE_FLAG_DCA_CAPABLE; 6798 #endif 6799 break; 6800 default: 6801 break; 6802 } 6803 6804 #ifdef IXGBE_FCOE 6805 /* FCoE support exists, always init the FCoE lock */ 6806 spin_lock_init(&adapter->fcoe.lock); 6807 6808 #endif 6809 /* n-tuple support exists, always init our spinlock */ 6810 spin_lock_init(&adapter->fdir_perfect_lock); 6811 6812 /* init spinlock to avoid concurrency of VF resources */ 6813 spin_lock_init(&adapter->vfs_lock); 6814 6815 #ifdef CONFIG_IXGBE_DCB 6816 ixgbe_init_dcb(adapter); 6817 #endif 6818 ixgbe_init_ipsec_offload(adapter); 6819 6820 /* default flow control settings */ 6821 hw->fc.requested_mode = ixgbe_fc_full; 6822 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */ 6823 ixgbe_pbthresh_setup(adapter); 6824 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; 6825 hw->fc.send_xon = true; 6826 hw->fc.disable_fc_autoneg = ixgbe_device_supports_autoneg_fc(hw); 6827 6828 #ifdef CONFIG_PCI_IOV 6829 if (max_vfs > 0) 6830 e_dev_warn("Enabling SR-IOV VFs using the max_vfs module parameter is deprecated - please use the pci sysfs interface instead.\n"); 6831 6832 /* assign number of SR-IOV VFs */ 6833 if (hw->mac.type != ixgbe_mac_82598EB) { 6834 if (max_vfs > IXGBE_MAX_VFS_DRV_LIMIT) { 6835 max_vfs = 0; 6836 e_dev_warn("max_vfs parameter out of range. Not assigning any SR-IOV VFs\n"); 6837 } 6838 } 6839 #endif /* CONFIG_PCI_IOV */ 6840 6841 /* enable itr by default in dynamic mode */ 6842 adapter->rx_itr_setting = 1; 6843 adapter->tx_itr_setting = 1; 6844 6845 /* set default ring sizes */ 6846 adapter->tx_ring_count = IXGBE_DEFAULT_TXD; 6847 adapter->rx_ring_count = IXGBE_DEFAULT_RXD; 6848 6849 /* set default work limits */ 6850 adapter->tx_work_limit = IXGBE_DEFAULT_TX_WORK; 6851 6852 /* initialize eeprom parameters */ 6853 if (hw->eeprom.ops.init_params(hw)) { 6854 e_dev_err("EEPROM initialization failed\n"); 6855 return -EIO; 6856 } 6857 6858 /* PF holds first pool slot */ 6859 set_bit(0, adapter->fwd_bitmask); 6860 set_bit(__IXGBE_DOWN, &adapter->state); 6861 6862 /* enable locking for XDP_TX if we have more CPUs than queues */ 6863 if (nr_cpu_ids > IXGBE_MAX_XDP_QS) 6864 static_branch_enable(&ixgbe_xdp_locking_key); 6865 6866 return 0; 6867 } 6868 6869 /** 6870 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) 6871 * @tx_ring: tx descriptor ring (for a specific queue) to setup 6872 * 6873 * Return 0 on success, negative on failure 6874 **/ 6875 int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring) 6876 { 6877 struct device *dev = tx_ring->dev; 6878 int orig_node = dev_to_node(dev); 6879 int ring_node = NUMA_NO_NODE; 6880 int size; 6881 6882 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; 6883 6884 if (tx_ring->q_vector) 6885 ring_node = tx_ring->q_vector->numa_node; 6886 6887 tx_ring->tx_buffer_info = vmalloc_node(size, ring_node); 6888 if (!tx_ring->tx_buffer_info) 6889 tx_ring->tx_buffer_info = vmalloc(size); 6890 if (!tx_ring->tx_buffer_info) 6891 goto err; 6892 6893 /* round up to nearest 4K */ 6894 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc); 6895 tx_ring->size = ALIGN(tx_ring->size, 4096); 6896 6897 set_dev_node(dev, ring_node); 6898 tx_ring->desc = dma_alloc_coherent(dev, 6899 tx_ring->size, 6900 &tx_ring->dma, 6901 GFP_KERNEL); 6902 set_dev_node(dev, orig_node); 6903 if (!tx_ring->desc) 6904 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, 6905 &tx_ring->dma, GFP_KERNEL); 6906 if (!tx_ring->desc) 6907 goto err; 6908 6909 tx_ring->next_to_use = 0; 6910 tx_ring->next_to_clean = 0; 6911 return 0; 6912 6913 err: 6914 vfree(tx_ring->tx_buffer_info); 6915 tx_ring->tx_buffer_info = NULL; 6916 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n"); 6917 return -ENOMEM; 6918 } 6919 6920 /** 6921 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources 6922 * @adapter: board private structure 6923 * 6924 * If this function returns with an error, then it's possible one or 6925 * more of the rings is populated (while the rest are not). It is the 6926 * callers duty to clean those orphaned rings. 6927 * 6928 * Return 0 on success, negative on failure 6929 **/ 6930 static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) 6931 { 6932 int i, j = 0, err = 0; 6933 6934 for (i = 0; i < adapter->num_tx_queues; i++) { 6935 err = ixgbe_setup_tx_resources(adapter->tx_ring[i]); 6936 if (!err) 6937 continue; 6938 6939 e_err(probe, "Allocation for Tx Queue %u failed\n", i); 6940 goto err_setup_tx; 6941 } 6942 for (j = 0; j < adapter->num_xdp_queues; j++) { 6943 err = ixgbe_setup_tx_resources(adapter->xdp_ring[j]); 6944 if (!err) 6945 continue; 6946 6947 e_err(probe, "Allocation for Tx Queue %u failed\n", j); 6948 goto err_setup_tx; 6949 } 6950 6951 return 0; 6952 err_setup_tx: 6953 /* rewind the index freeing the rings as we go */ 6954 while (j--) 6955 ixgbe_free_tx_resources(adapter->xdp_ring[j]); 6956 while (i--) 6957 ixgbe_free_tx_resources(adapter->tx_ring[i]); 6958 return err; 6959 } 6960 6961 static int ixgbe_rx_napi_id(struct ixgbe_ring *rx_ring) 6962 { 6963 struct ixgbe_q_vector *q_vector = rx_ring->q_vector; 6964 6965 return q_vector ? q_vector->napi.napi_id : 0; 6966 } 6967 6968 /** 6969 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) 6970 * @adapter: pointer to ixgbe_adapter 6971 * @rx_ring: rx descriptor ring (for a specific queue) to setup 6972 * 6973 * Returns 0 on success, negative on failure 6974 **/ 6975 int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, 6976 struct ixgbe_ring *rx_ring) 6977 { 6978 struct device *dev = rx_ring->dev; 6979 int orig_node = dev_to_node(dev); 6980 int ring_node = NUMA_NO_NODE; 6981 int size; 6982 6983 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; 6984 6985 if (rx_ring->q_vector) 6986 ring_node = rx_ring->q_vector->numa_node; 6987 6988 rx_ring->rx_buffer_info = vmalloc_node(size, ring_node); 6989 if (!rx_ring->rx_buffer_info) 6990 rx_ring->rx_buffer_info = vmalloc(size); 6991 if (!rx_ring->rx_buffer_info) 6992 goto err; 6993 6994 /* Round up to nearest 4K */ 6995 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); 6996 rx_ring->size = ALIGN(rx_ring->size, 4096); 6997 6998 set_dev_node(dev, ring_node); 6999 rx_ring->desc = dma_alloc_coherent(dev, 7000 rx_ring->size, 7001 &rx_ring->dma, 7002 GFP_KERNEL); 7003 set_dev_node(dev, orig_node); 7004 if (!rx_ring->desc) 7005 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, 7006 &rx_ring->dma, GFP_KERNEL); 7007 if (!rx_ring->desc) 7008 goto err; 7009 7010 rx_ring->next_to_clean = 0; 7011 rx_ring->next_to_use = 0; 7012 7013 /* XDP RX-queue info */ 7014 if (xdp_rxq_info_reg(&rx_ring->xdp_rxq, adapter->netdev, 7015 rx_ring->queue_index, ixgbe_rx_napi_id(rx_ring)) < 0) 7016 goto err; 7017 7018 WRITE_ONCE(rx_ring->xdp_prog, adapter->xdp_prog); 7019 7020 return 0; 7021 err: 7022 vfree(rx_ring->rx_buffer_info); 7023 rx_ring->rx_buffer_info = NULL; 7024 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n"); 7025 return -ENOMEM; 7026 } 7027 7028 /** 7029 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources 7030 * @adapter: board private structure 7031 * 7032 * If this function returns with an error, then it's possible one or 7033 * more of the rings is populated (while the rest are not). It is the 7034 * callers duty to clean those orphaned rings. 7035 * 7036 * Return 0 on success, negative on failure 7037 **/ 7038 static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) 7039 { 7040 int i, err = 0; 7041 7042 for (i = 0; i < adapter->num_rx_queues; i++) { 7043 err = ixgbe_setup_rx_resources(adapter, adapter->rx_ring[i]); 7044 if (!err) 7045 continue; 7046 7047 e_err(probe, "Allocation for Rx Queue %u failed\n", i); 7048 goto err_setup_rx; 7049 } 7050 7051 #ifdef IXGBE_FCOE 7052 err = ixgbe_setup_fcoe_ddp_resources(adapter); 7053 if (!err) 7054 #endif 7055 return 0; 7056 err_setup_rx: 7057 /* rewind the index freeing the rings as we go */ 7058 while (i--) 7059 ixgbe_free_rx_resources(adapter->rx_ring[i]); 7060 return err; 7061 } 7062 7063 /** 7064 * ixgbe_free_tx_resources - Free Tx Resources per Queue 7065 * @tx_ring: Tx descriptor ring for a specific queue 7066 * 7067 * Free all transmit software resources 7068 **/ 7069 void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring) 7070 { 7071 ixgbe_clean_tx_ring(tx_ring); 7072 7073 vfree(tx_ring->tx_buffer_info); 7074 tx_ring->tx_buffer_info = NULL; 7075 7076 /* if not set, then don't free */ 7077 if (!tx_ring->desc) 7078 return; 7079 7080 dma_free_coherent(tx_ring->dev, tx_ring->size, 7081 tx_ring->desc, tx_ring->dma); 7082 7083 tx_ring->desc = NULL; 7084 } 7085 7086 /** 7087 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues 7088 * @adapter: board private structure 7089 * 7090 * Free all transmit software resources 7091 **/ 7092 static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) 7093 { 7094 int i; 7095 7096 for (i = 0; i < adapter->num_tx_queues; i++) 7097 if (adapter->tx_ring[i]->desc) 7098 ixgbe_free_tx_resources(adapter->tx_ring[i]); 7099 for (i = 0; i < adapter->num_xdp_queues; i++) 7100 if (adapter->xdp_ring[i]->desc) 7101 ixgbe_free_tx_resources(adapter->xdp_ring[i]); 7102 } 7103 7104 /** 7105 * ixgbe_free_rx_resources - Free Rx Resources 7106 * @rx_ring: ring to clean the resources from 7107 * 7108 * Free all receive software resources 7109 **/ 7110 void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring) 7111 { 7112 ixgbe_clean_rx_ring(rx_ring); 7113 7114 rx_ring->xdp_prog = NULL; 7115 xdp_rxq_info_unreg(&rx_ring->xdp_rxq); 7116 vfree(rx_ring->rx_buffer_info); 7117 rx_ring->rx_buffer_info = NULL; 7118 7119 /* if not set, then don't free */ 7120 if (!rx_ring->desc) 7121 return; 7122 7123 dma_free_coherent(rx_ring->dev, rx_ring->size, 7124 rx_ring->desc, rx_ring->dma); 7125 7126 rx_ring->desc = NULL; 7127 } 7128 7129 /** 7130 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues 7131 * @adapter: board private structure 7132 * 7133 * Free all receive software resources 7134 **/ 7135 static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) 7136 { 7137 int i; 7138 7139 #ifdef IXGBE_FCOE 7140 ixgbe_free_fcoe_ddp_resources(adapter); 7141 7142 #endif 7143 for (i = 0; i < adapter->num_rx_queues; i++) 7144 if (adapter->rx_ring[i]->desc) 7145 ixgbe_free_rx_resources(adapter->rx_ring[i]); 7146 } 7147 7148 /** 7149 * ixgbe_max_xdp_frame_size - returns the maximum allowed frame size for XDP 7150 * @adapter: device handle, pointer to adapter 7151 */ 7152 static int ixgbe_max_xdp_frame_size(struct ixgbe_adapter *adapter) 7153 { 7154 if (PAGE_SIZE >= 8192 || adapter->flags2 & IXGBE_FLAG2_RX_LEGACY) 7155 return IXGBE_RXBUFFER_2K; 7156 else 7157 return IXGBE_RXBUFFER_3K; 7158 } 7159 7160 /** 7161 * ixgbe_change_mtu - Change the Maximum Transfer Unit 7162 * @netdev: network interface device structure 7163 * @new_mtu: new value for maximum frame size 7164 * 7165 * Returns 0 on success, negative on failure 7166 **/ 7167 static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) 7168 { 7169 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 7170 7171 if (ixgbe_enabled_xdp_adapter(adapter)) { 7172 int new_frame_size = new_mtu + IXGBE_PKT_HDR_PAD; 7173 7174 if (new_frame_size > ixgbe_max_xdp_frame_size(adapter)) { 7175 e_warn(probe, "Requested MTU size is not supported with XDP\n"); 7176 return -EINVAL; 7177 } 7178 } 7179 7180 /* 7181 * For 82599EB we cannot allow legacy VFs to enable their receive 7182 * paths when MTU greater than 1500 is configured. So display a 7183 * warning that legacy VFs will be disabled. 7184 */ 7185 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && 7186 (adapter->hw.mac.type == ixgbe_mac_82599EB) && 7187 (new_mtu > ETH_DATA_LEN)) 7188 e_warn(probe, "Setting MTU > 1500 will disable legacy VFs\n"); 7189 7190 netdev_dbg(netdev, "changing MTU from %d to %d\n", 7191 netdev->mtu, new_mtu); 7192 7193 /* must set new MTU before calling down or up */ 7194 WRITE_ONCE(netdev->mtu, new_mtu); 7195 7196 if (netif_running(netdev)) 7197 ixgbe_reinit_locked(adapter); 7198 7199 return 0; 7200 } 7201 7202 /** 7203 * ixgbe_open - Called when a network interface is made active 7204 * @netdev: network interface device structure 7205 * 7206 * Returns 0 on success, negative value on failure 7207 * 7208 * The open entry point is called when a network interface is made 7209 * active by the system (IFF_UP). At this point all resources needed 7210 * for transmit and receive operations are allocated, the interrupt 7211 * handler is registered with the OS, the watchdog timer is started, 7212 * and the stack is notified that the interface is ready. 7213 **/ 7214 int ixgbe_open(struct net_device *netdev) 7215 { 7216 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 7217 struct ixgbe_hw *hw = &adapter->hw; 7218 int err, queues; 7219 7220 /* disallow open during test */ 7221 if (test_bit(__IXGBE_TESTING, &adapter->state)) 7222 return -EBUSY; 7223 7224 netif_carrier_off(netdev); 7225 7226 /* allocate transmit descriptors */ 7227 err = ixgbe_setup_all_tx_resources(adapter); 7228 if (err) 7229 goto err_setup_tx; 7230 7231 /* allocate receive descriptors */ 7232 err = ixgbe_setup_all_rx_resources(adapter); 7233 if (err) 7234 goto err_setup_rx; 7235 7236 ixgbe_configure(adapter); 7237 7238 err = ixgbe_request_irq(adapter); 7239 if (err) 7240 goto err_req_irq; 7241 7242 /* Notify the stack of the actual queue counts. */ 7243 queues = adapter->num_tx_queues; 7244 err = netif_set_real_num_tx_queues(netdev, queues); 7245 if (err) 7246 goto err_set_queues; 7247 7248 queues = adapter->num_rx_queues; 7249 err = netif_set_real_num_rx_queues(netdev, queues); 7250 if (err) 7251 goto err_set_queues; 7252 7253 ixgbe_ptp_init(adapter); 7254 7255 ixgbe_up_complete(adapter); 7256 7257 udp_tunnel_nic_reset_ntf(netdev); 7258 if (adapter->hw.mac.type == ixgbe_mac_e610) { 7259 int err = ixgbe_update_link_info(&adapter->hw); 7260 7261 if (err) 7262 e_dev_err("Failed to update link info, err %d.\n", err); 7263 7264 ixgbe_check_link_cfg_err(adapter, 7265 adapter->hw.link.link_info.link_cfg_err); 7266 7267 err = ixgbe_non_sfp_link_config(&adapter->hw); 7268 if (ixgbe_non_sfp_link_config(&adapter->hw)) 7269 e_dev_err("Link setup failed, err %d.\n", err); 7270 } 7271 7272 return 0; 7273 7274 err_set_queues: 7275 ixgbe_free_irq(adapter); 7276 err_req_irq: 7277 ixgbe_free_all_rx_resources(adapter); 7278 if (hw->phy.ops.set_phy_power && !adapter->wol) 7279 hw->phy.ops.set_phy_power(&adapter->hw, false); 7280 err_setup_rx: 7281 ixgbe_free_all_tx_resources(adapter); 7282 err_setup_tx: 7283 ixgbe_reset(adapter); 7284 7285 return err; 7286 } 7287 7288 static void ixgbe_close_suspend(struct ixgbe_adapter *adapter) 7289 { 7290 ixgbe_ptp_suspend(adapter); 7291 7292 if (adapter->hw.phy.ops.enter_lplu) { 7293 adapter->hw.phy.reset_disable = true; 7294 ixgbe_down(adapter); 7295 adapter->hw.phy.ops.enter_lplu(&adapter->hw); 7296 adapter->hw.phy.reset_disable = false; 7297 } else { 7298 ixgbe_down(adapter); 7299 } 7300 7301 ixgbe_free_irq(adapter); 7302 7303 ixgbe_free_all_tx_resources(adapter); 7304 ixgbe_free_all_rx_resources(adapter); 7305 } 7306 7307 /** 7308 * ixgbe_close - Disables a network interface 7309 * @netdev: network interface device structure 7310 * 7311 * Returns 0, this is not allowed to fail 7312 * 7313 * The close entry point is called when an interface is de-activated 7314 * by the OS. The hardware is still under the drivers control, but 7315 * needs to be disabled. A global MAC reset is issued to stop the 7316 * hardware, and all transmit and receive resources are freed. 7317 **/ 7318 int ixgbe_close(struct net_device *netdev) 7319 { 7320 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 7321 7322 ixgbe_ptp_stop(adapter); 7323 7324 if (netif_device_present(netdev)) 7325 ixgbe_close_suspend(adapter); 7326 7327 ixgbe_fdir_filter_exit(adapter); 7328 7329 ixgbe_release_hw_control(adapter); 7330 7331 return 0; 7332 } 7333 7334 static int ixgbe_resume(struct device *dev_d) 7335 { 7336 struct pci_dev *pdev = to_pci_dev(dev_d); 7337 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 7338 struct net_device *netdev = adapter->netdev; 7339 u32 err; 7340 7341 adapter->hw.hw_addr = adapter->io_addr; 7342 7343 err = pci_enable_device_mem(pdev); 7344 if (err) { 7345 e_dev_err("Cannot enable PCI device from suspend\n"); 7346 return err; 7347 } 7348 smp_mb__before_atomic(); 7349 clear_bit(__IXGBE_DISABLED, &adapter->state); 7350 pci_set_master(pdev); 7351 7352 device_wakeup_disable(dev_d); 7353 7354 ixgbe_reset(adapter); 7355 7356 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 7357 7358 rtnl_lock(); 7359 err = ixgbe_init_interrupt_scheme(adapter); 7360 if (!err && netif_running(netdev)) 7361 err = ixgbe_open(netdev); 7362 7363 7364 if (!err) 7365 netif_device_attach(netdev); 7366 rtnl_unlock(); 7367 7368 return err; 7369 } 7370 7371 static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake) 7372 { 7373 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 7374 struct net_device *netdev = adapter->netdev; 7375 struct ixgbe_hw *hw = &adapter->hw; 7376 u32 ctrl; 7377 u32 wufc = adapter->wol; 7378 7379 rtnl_lock(); 7380 netif_device_detach(netdev); 7381 7382 if (netif_running(netdev)) 7383 ixgbe_close_suspend(adapter); 7384 7385 ixgbe_clear_interrupt_scheme(adapter); 7386 rtnl_unlock(); 7387 7388 if (hw->mac.ops.stop_link_on_d3) 7389 hw->mac.ops.stop_link_on_d3(hw); 7390 7391 if (wufc) { 7392 u32 fctrl; 7393 7394 ixgbe_set_rx_mode(netdev); 7395 7396 /* enable the optics for 82599 SFP+ fiber as we can WoL */ 7397 if (hw->mac.ops.enable_tx_laser) 7398 hw->mac.ops.enable_tx_laser(hw); 7399 7400 /* enable the reception of multicast packets */ 7401 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 7402 fctrl |= IXGBE_FCTRL_MPE; 7403 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); 7404 7405 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL); 7406 ctrl |= IXGBE_CTRL_GIO_DIS; 7407 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl); 7408 7409 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc); 7410 } else { 7411 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0); 7412 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0); 7413 } 7414 7415 switch (hw->mac.type) { 7416 case ixgbe_mac_82598EB: 7417 pci_wake_from_d3(pdev, false); 7418 break; 7419 case ixgbe_mac_82599EB: 7420 case ixgbe_mac_X540: 7421 case ixgbe_mac_X550: 7422 case ixgbe_mac_X550EM_x: 7423 case ixgbe_mac_x550em_a: 7424 case ixgbe_mac_e610: 7425 pci_wake_from_d3(pdev, !!wufc); 7426 break; 7427 default: 7428 break; 7429 } 7430 7431 *enable_wake = !!wufc; 7432 if (hw->phy.ops.set_phy_power && !*enable_wake) 7433 hw->phy.ops.set_phy_power(hw, false); 7434 7435 ixgbe_release_hw_control(adapter); 7436 7437 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) 7438 pci_disable_device(pdev); 7439 7440 return 0; 7441 } 7442 7443 static int ixgbe_suspend(struct device *dev_d) 7444 { 7445 struct pci_dev *pdev = to_pci_dev(dev_d); 7446 int retval; 7447 bool wake; 7448 7449 retval = __ixgbe_shutdown(pdev, &wake); 7450 7451 device_set_wakeup_enable(dev_d, wake); 7452 7453 return retval; 7454 } 7455 7456 static void ixgbe_shutdown(struct pci_dev *pdev) 7457 { 7458 bool wake; 7459 7460 __ixgbe_shutdown(pdev, &wake); 7461 7462 if (system_state == SYSTEM_POWER_OFF) { 7463 pci_wake_from_d3(pdev, wake); 7464 pci_set_power_state(pdev, PCI_D3hot); 7465 } 7466 } 7467 7468 /** 7469 * ixgbe_update_stats - Update the board statistics counters. 7470 * @adapter: board private structure 7471 **/ 7472 void ixgbe_update_stats(struct ixgbe_adapter *adapter) 7473 { 7474 struct net_device *netdev = adapter->netdev; 7475 struct ixgbe_hw *hw = &adapter->hw; 7476 struct ixgbe_hw_stats *hwstats = &adapter->stats; 7477 u64 total_mpc = 0; 7478 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; 7479 u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0; 7480 u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0; 7481 u64 alloc_rx_page = 0; 7482 u64 bytes = 0, packets = 0, hw_csum_rx_error = 0; 7483 7484 if (test_bit(__IXGBE_DOWN, &adapter->state) || 7485 test_bit(__IXGBE_RESETTING, &adapter->state)) 7486 return; 7487 7488 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) { 7489 u64 rsc_count = 0; 7490 u64 rsc_flush = 0; 7491 for (i = 0; i < adapter->num_rx_queues; i++) { 7492 rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count; 7493 rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush; 7494 } 7495 adapter->rsc_total_count = rsc_count; 7496 adapter->rsc_total_flush = rsc_flush; 7497 } 7498 7499 for (i = 0; i < adapter->num_rx_queues; i++) { 7500 struct ixgbe_ring *rx_ring = READ_ONCE(adapter->rx_ring[i]); 7501 7502 if (!rx_ring) 7503 continue; 7504 non_eop_descs += rx_ring->rx_stats.non_eop_descs; 7505 alloc_rx_page += rx_ring->rx_stats.alloc_rx_page; 7506 alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed; 7507 alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed; 7508 hw_csum_rx_error += rx_ring->rx_stats.csum_err; 7509 bytes += rx_ring->stats.bytes; 7510 packets += rx_ring->stats.packets; 7511 } 7512 adapter->non_eop_descs = non_eop_descs; 7513 adapter->alloc_rx_page = alloc_rx_page; 7514 adapter->alloc_rx_page_failed = alloc_rx_page_failed; 7515 adapter->alloc_rx_buff_failed = alloc_rx_buff_failed; 7516 adapter->hw_csum_rx_error = hw_csum_rx_error; 7517 netdev->stats.rx_bytes = bytes; 7518 netdev->stats.rx_packets = packets; 7519 7520 bytes = 0; 7521 packets = 0; 7522 /* gather some stats to the adapter struct that are per queue */ 7523 for (i = 0; i < adapter->num_tx_queues; i++) { 7524 struct ixgbe_ring *tx_ring = READ_ONCE(adapter->tx_ring[i]); 7525 7526 if (!tx_ring) 7527 continue; 7528 restart_queue += tx_ring->tx_stats.restart_queue; 7529 tx_busy += tx_ring->tx_stats.tx_busy; 7530 bytes += tx_ring->stats.bytes; 7531 packets += tx_ring->stats.packets; 7532 } 7533 for (i = 0; i < adapter->num_xdp_queues; i++) { 7534 struct ixgbe_ring *xdp_ring = READ_ONCE(adapter->xdp_ring[i]); 7535 7536 if (!xdp_ring) 7537 continue; 7538 restart_queue += xdp_ring->tx_stats.restart_queue; 7539 tx_busy += xdp_ring->tx_stats.tx_busy; 7540 bytes += xdp_ring->stats.bytes; 7541 packets += xdp_ring->stats.packets; 7542 } 7543 adapter->restart_queue = restart_queue; 7544 adapter->tx_busy = tx_busy; 7545 netdev->stats.tx_bytes = bytes; 7546 netdev->stats.tx_packets = packets; 7547 7548 hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); 7549 7550 /* 8 register reads */ 7551 for (i = 0; i < 8; i++) { 7552 /* for packet buffers not used, the register should read 0 */ 7553 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); 7554 missed_rx += mpc; 7555 hwstats->mpc[i] += mpc; 7556 total_mpc += hwstats->mpc[i]; 7557 hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i)); 7558 hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i)); 7559 switch (hw->mac.type) { 7560 case ixgbe_mac_82598EB: 7561 hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); 7562 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i)); 7563 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i)); 7564 hwstats->pxonrxc[i] += 7565 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i)); 7566 break; 7567 case ixgbe_mac_82599EB: 7568 case ixgbe_mac_X540: 7569 case ixgbe_mac_X550: 7570 case ixgbe_mac_X550EM_x: 7571 case ixgbe_mac_x550em_a: 7572 case ixgbe_mac_e610: 7573 hwstats->pxonrxc[i] += 7574 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i)); 7575 break; 7576 default: 7577 break; 7578 } 7579 } 7580 7581 /*16 register reads */ 7582 for (i = 0; i < 16; i++) { 7583 hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i)); 7584 hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i)); 7585 if (hw->mac.type == ixgbe_mac_82599EB || 7586 hw->mac.type == ixgbe_mac_X540 || 7587 hw->mac.type == ixgbe_mac_X550 || 7588 hw->mac.type == ixgbe_mac_X550EM_x || 7589 hw->mac.type == ixgbe_mac_x550em_a || 7590 hw->mac.type == ixgbe_mac_e610) { 7591 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC_L(i)); 7592 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); /* to clear */ 7593 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC_L(i)); 7594 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); /* to clear */ 7595 } 7596 } 7597 7598 hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); 7599 /* work around hardware counting issue */ 7600 hwstats->gprc -= missed_rx; 7601 7602 ixgbe_update_xoff_received(adapter); 7603 7604 /* 82598 hardware only has a 32 bit counter in the high register */ 7605 switch (hw->mac.type) { 7606 case ixgbe_mac_82598EB: 7607 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); 7608 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); 7609 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); 7610 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH); 7611 break; 7612 case ixgbe_mac_X540: 7613 case ixgbe_mac_X550: 7614 case ixgbe_mac_X550EM_x: 7615 case ixgbe_mac_x550em_a: 7616 case ixgbe_mac_e610: 7617 /* OS2BMC stats are X540 and later */ 7618 hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC); 7619 hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC); 7620 hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC); 7621 hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC); 7622 fallthrough; 7623 case ixgbe_mac_82599EB: 7624 for (i = 0; i < 16; i++) 7625 adapter->hw_rx_no_dma_resources += 7626 IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); 7627 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL); 7628 IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */ 7629 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL); 7630 IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */ 7631 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL); 7632 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */ 7633 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); 7634 hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH); 7635 hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS); 7636 #ifdef IXGBE_FCOE 7637 hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC); 7638 hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC); 7639 hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC); 7640 hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC); 7641 hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC); 7642 hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC); 7643 /* Add up per cpu counters for total ddp aloc fail */ 7644 if (adapter->fcoe.ddp_pool) { 7645 struct ixgbe_fcoe *fcoe = &adapter->fcoe; 7646 struct ixgbe_fcoe_ddp_pool *ddp_pool; 7647 unsigned int cpu; 7648 u64 noddp = 0, noddp_ext_buff = 0; 7649 for_each_possible_cpu(cpu) { 7650 ddp_pool = per_cpu_ptr(fcoe->ddp_pool, cpu); 7651 noddp += ddp_pool->noddp; 7652 noddp_ext_buff += ddp_pool->noddp_ext_buff; 7653 } 7654 hwstats->fcoe_noddp = noddp; 7655 hwstats->fcoe_noddp_ext_buff = noddp_ext_buff; 7656 } 7657 #endif /* IXGBE_FCOE */ 7658 break; 7659 default: 7660 break; 7661 } 7662 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); 7663 hwstats->bprc += bprc; 7664 hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); 7665 if (hw->mac.type == ixgbe_mac_82598EB) 7666 hwstats->mprc -= bprc; 7667 hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC); 7668 hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); 7669 hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); 7670 hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); 7671 hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); 7672 hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); 7673 hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); 7674 hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); 7675 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); 7676 hwstats->lxontxc += lxon; 7677 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); 7678 hwstats->lxofftxc += lxoff; 7679 hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); 7680 hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); 7681 /* 7682 * 82598 errata - tx of flow control packets is included in tx counters 7683 */ 7684 xon_off_tot = lxon + lxoff; 7685 hwstats->gptc -= xon_off_tot; 7686 hwstats->mptc -= xon_off_tot; 7687 hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); 7688 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC); 7689 hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC); 7690 hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC); 7691 hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR); 7692 hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); 7693 hwstats->ptc64 -= xon_off_tot; 7694 hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); 7695 hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); 7696 hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); 7697 hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); 7698 hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); 7699 hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); 7700 7701 /* Fill out the OS statistics structure */ 7702 netdev->stats.multicast = hwstats->mprc; 7703 7704 /* Rx Errors */ 7705 netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec; 7706 netdev->stats.rx_dropped = 0; 7707 netdev->stats.rx_length_errors = hwstats->rlec; 7708 netdev->stats.rx_crc_errors = hwstats->crcerrs; 7709 netdev->stats.rx_missed_errors = total_mpc; 7710 7711 /* VF Stats Collection - skip while resetting because these 7712 * are not clear on read and otherwise you'll sometimes get 7713 * crazy values. 7714 */ 7715 if (!test_bit(__IXGBE_RESETTING, &adapter->state)) { 7716 for (i = 0; i < adapter->num_vfs; i++) { 7717 UPDATE_VF_COUNTER_32bit(IXGBE_PVFGPRC(i), 7718 adapter->vfinfo[i].last_vfstats.gprc, 7719 adapter->vfinfo[i].vfstats.gprc); 7720 UPDATE_VF_COUNTER_32bit(IXGBE_PVFGPTC(i), 7721 adapter->vfinfo[i].last_vfstats.gptc, 7722 adapter->vfinfo[i].vfstats.gptc); 7723 UPDATE_VF_COUNTER_36bit(IXGBE_PVFGORC_LSB(i), 7724 IXGBE_PVFGORC_MSB(i), 7725 adapter->vfinfo[i].last_vfstats.gorc, 7726 adapter->vfinfo[i].vfstats.gorc); 7727 UPDATE_VF_COUNTER_36bit(IXGBE_PVFGOTC_LSB(i), 7728 IXGBE_PVFGOTC_MSB(i), 7729 adapter->vfinfo[i].last_vfstats.gotc, 7730 adapter->vfinfo[i].vfstats.gotc); 7731 UPDATE_VF_COUNTER_32bit(IXGBE_PVFMPRC(i), 7732 adapter->vfinfo[i].last_vfstats.mprc, 7733 adapter->vfinfo[i].vfstats.mprc); 7734 } 7735 } 7736 } 7737 7738 /** 7739 * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table 7740 * @adapter: pointer to the device adapter structure 7741 **/ 7742 static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter) 7743 { 7744 struct ixgbe_hw *hw = &adapter->hw; 7745 int i; 7746 7747 if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT)) 7748 return; 7749 7750 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 7751 7752 /* if interface is down do nothing */ 7753 if (test_bit(__IXGBE_DOWN, &adapter->state)) 7754 return; 7755 7756 /* do nothing if we are not using signature filters */ 7757 if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)) 7758 return; 7759 7760 adapter->fdir_overflow++; 7761 7762 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) { 7763 for (i = 0; i < adapter->num_tx_queues; i++) 7764 set_bit(__IXGBE_TX_FDIR_INIT_DONE, 7765 &(adapter->tx_ring[i]->state)); 7766 for (i = 0; i < adapter->num_xdp_queues; i++) 7767 set_bit(__IXGBE_TX_FDIR_INIT_DONE, 7768 &adapter->xdp_ring[i]->state); 7769 /* re-enable flow director interrupts */ 7770 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR); 7771 } else { 7772 e_err(probe, "failed to finish FDIR re-initialization, " 7773 "ignored adding FDIR ATR filters\n"); 7774 } 7775 } 7776 7777 /** 7778 * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts 7779 * @adapter: pointer to the device adapter structure 7780 * 7781 * This function serves two purposes. First it strobes the interrupt lines 7782 * in order to make certain interrupts are occurring. Secondly it sets the 7783 * bits needed to check for TX hangs. As a result we should immediately 7784 * determine if a hang has occurred. 7785 */ 7786 static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter) 7787 { 7788 struct ixgbe_hw *hw = &adapter->hw; 7789 u64 eics = 0; 7790 int i; 7791 7792 /* If we're down, removing or resetting, just bail */ 7793 if (test_bit(__IXGBE_DOWN, &adapter->state) || 7794 test_bit(__IXGBE_REMOVING, &adapter->state) || 7795 test_bit(__IXGBE_RESETTING, &adapter->state)) 7796 return; 7797 7798 /* Force detection of hung controller */ 7799 if (netif_carrier_ok(adapter->netdev)) { 7800 for (i = 0; i < adapter->num_tx_queues; i++) 7801 set_check_for_tx_hang(adapter->tx_ring[i]); 7802 for (i = 0; i < adapter->num_xdp_queues; i++) 7803 set_check_for_tx_hang(adapter->xdp_ring[i]); 7804 } 7805 7806 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { 7807 /* 7808 * for legacy and MSI interrupts don't set any bits 7809 * that are enabled for EIAM, because this operation 7810 * would set *both* EIMS and EICS for any bit in EIAM 7811 */ 7812 IXGBE_WRITE_REG(hw, IXGBE_EICS, 7813 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); 7814 } else { 7815 /* get one bit for every active tx/rx interrupt vector */ 7816 for (i = 0; i < adapter->num_q_vectors; i++) { 7817 struct ixgbe_q_vector *qv = adapter->q_vector[i]; 7818 if (qv->rx.ring || qv->tx.ring) 7819 eics |= BIT_ULL(i); 7820 } 7821 } 7822 7823 /* Cause software interrupt to ensure rings are cleaned */ 7824 ixgbe_irq_rearm_queues(adapter, eics); 7825 } 7826 7827 /** 7828 * ixgbe_watchdog_update_link - update the link status 7829 * @adapter: pointer to the device adapter structure 7830 **/ 7831 static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter) 7832 { 7833 struct ixgbe_hw *hw = &adapter->hw; 7834 u32 link_speed = adapter->link_speed; 7835 bool link_up = adapter->link_up; 7836 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 7837 7838 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)) 7839 return; 7840 7841 if (hw->mac.ops.check_link) { 7842 hw->mac.ops.check_link(hw, &link_speed, &link_up, false); 7843 } else { 7844 /* always assume link is up, if no check link function */ 7845 link_speed = IXGBE_LINK_SPEED_10GB_FULL; 7846 link_up = true; 7847 } 7848 7849 if (adapter->ixgbe_ieee_pfc) 7850 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 7851 7852 if (link_up && !((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && pfc_en)) { 7853 hw->mac.ops.fc_enable(hw); 7854 ixgbe_set_rx_drop_en(adapter); 7855 } 7856 7857 if (link_up || 7858 time_after(jiffies, (adapter->link_check_timeout + 7859 IXGBE_TRY_LINK_TIMEOUT))) { 7860 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; 7861 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC); 7862 IXGBE_WRITE_FLUSH(hw); 7863 } 7864 7865 adapter->link_up = link_up; 7866 adapter->link_speed = link_speed; 7867 } 7868 7869 static void ixgbe_update_default_up(struct ixgbe_adapter *adapter) 7870 { 7871 #ifdef CONFIG_IXGBE_DCB 7872 struct net_device *netdev = adapter->netdev; 7873 struct dcb_app app = { 7874 .selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE, 7875 .protocol = 0, 7876 }; 7877 u8 up = 0; 7878 7879 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) 7880 up = dcb_ieee_getapp_mask(netdev, &app); 7881 7882 adapter->default_up = (up > 1) ? (ffs(up) - 1) : 0; 7883 #endif 7884 } 7885 7886 /** 7887 * ixgbe_watchdog_link_is_up - update netif_carrier status and 7888 * print link up message 7889 * @adapter: pointer to the device adapter structure 7890 **/ 7891 static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter) 7892 { 7893 struct net_device *netdev = adapter->netdev; 7894 struct ixgbe_hw *hw = &adapter->hw; 7895 u32 link_speed = adapter->link_speed; 7896 const char *speed_str; 7897 bool flow_rx, flow_tx; 7898 7899 /* only continue if link was previously down */ 7900 if (netif_carrier_ok(netdev)) 7901 return; 7902 7903 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; 7904 7905 switch (hw->mac.type) { 7906 case ixgbe_mac_82598EB: { 7907 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 7908 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS); 7909 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE); 7910 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X); 7911 } 7912 break; 7913 case ixgbe_mac_X540: 7914 case ixgbe_mac_X550: 7915 case ixgbe_mac_X550EM_x: 7916 case ixgbe_mac_x550em_a: 7917 case ixgbe_mac_e610: 7918 case ixgbe_mac_82599EB: { 7919 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN); 7920 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG); 7921 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE); 7922 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X); 7923 } 7924 break; 7925 default: 7926 flow_tx = false; 7927 flow_rx = false; 7928 break; 7929 } 7930 7931 adapter->last_rx_ptp_check = jiffies; 7932 7933 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 7934 ixgbe_ptp_start_cyclecounter(adapter); 7935 7936 switch (link_speed) { 7937 case IXGBE_LINK_SPEED_10GB_FULL: 7938 speed_str = "10 Gbps"; 7939 break; 7940 case IXGBE_LINK_SPEED_5GB_FULL: 7941 speed_str = "5 Gbps"; 7942 break; 7943 case IXGBE_LINK_SPEED_2_5GB_FULL: 7944 speed_str = "2.5 Gbps"; 7945 break; 7946 case IXGBE_LINK_SPEED_1GB_FULL: 7947 speed_str = "1 Gbps"; 7948 break; 7949 case IXGBE_LINK_SPEED_100_FULL: 7950 speed_str = "100 Mbps"; 7951 break; 7952 case IXGBE_LINK_SPEED_10_FULL: 7953 speed_str = "10 Mbps"; 7954 break; 7955 default: 7956 speed_str = "unknown speed"; 7957 break; 7958 } 7959 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n", speed_str, 7960 ((flow_rx && flow_tx) ? "RX/TX" : 7961 (flow_rx ? "RX" : 7962 (flow_tx ? "TX" : "None")))); 7963 7964 netif_carrier_on(netdev); 7965 ixgbe_check_vf_rate_limit(adapter); 7966 7967 /* enable transmits */ 7968 netif_tx_wake_all_queues(adapter->netdev); 7969 7970 /* update the default user priority for VFs */ 7971 ixgbe_update_default_up(adapter); 7972 7973 /* ping all the active vfs to let them know link has changed */ 7974 ixgbe_ping_all_vfs(adapter); 7975 } 7976 7977 /** 7978 * ixgbe_watchdog_link_is_down - update netif_carrier status and 7979 * print link down message 7980 * @adapter: pointer to the adapter structure 7981 **/ 7982 static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *adapter) 7983 { 7984 struct net_device *netdev = adapter->netdev; 7985 struct ixgbe_hw *hw = &adapter->hw; 7986 7987 adapter->link_up = false; 7988 adapter->link_speed = 0; 7989 7990 /* only continue if link was up previously */ 7991 if (!netif_carrier_ok(netdev)) 7992 return; 7993 7994 /* poll for SFP+ cable when link is down */ 7995 if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB) 7996 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; 7997 7998 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 7999 ixgbe_ptp_start_cyclecounter(adapter); 8000 8001 e_info(drv, "NIC Link is Down\n"); 8002 netif_carrier_off(netdev); 8003 8004 /* ping all the active vfs to let them know link has changed */ 8005 ixgbe_ping_all_vfs(adapter); 8006 } 8007 8008 static bool ixgbe_ring_tx_pending(struct ixgbe_adapter *adapter) 8009 { 8010 int i; 8011 8012 for (i = 0; i < adapter->num_tx_queues; i++) { 8013 struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; 8014 8015 if (tx_ring->next_to_use != tx_ring->next_to_clean) 8016 return true; 8017 } 8018 8019 for (i = 0; i < adapter->num_xdp_queues; i++) { 8020 struct ixgbe_ring *ring = adapter->xdp_ring[i]; 8021 8022 if (ring->next_to_use != ring->next_to_clean) 8023 return true; 8024 } 8025 8026 return false; 8027 } 8028 8029 static bool ixgbe_vf_tx_pending(struct ixgbe_adapter *adapter) 8030 { 8031 struct ixgbe_hw *hw = &adapter->hw; 8032 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 8033 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 8034 8035 int i, j; 8036 8037 if (!adapter->num_vfs) 8038 return false; 8039 8040 /* resetting the PF is only needed for MAC before X550 */ 8041 if (hw->mac.type >= ixgbe_mac_X550) 8042 return false; 8043 8044 for (i = 0; i < adapter->num_vfs; i++) { 8045 for (j = 0; j < q_per_pool; j++) { 8046 u32 h, t; 8047 8048 h = IXGBE_READ_REG(hw, IXGBE_PVFTDHN(q_per_pool, i, j)); 8049 t = IXGBE_READ_REG(hw, IXGBE_PVFTDTN(q_per_pool, i, j)); 8050 8051 if (h != t) 8052 return true; 8053 } 8054 } 8055 8056 return false; 8057 } 8058 8059 /** 8060 * ixgbe_watchdog_flush_tx - flush queues on link down 8061 * @adapter: pointer to the device adapter structure 8062 **/ 8063 static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter) 8064 { 8065 if (!netif_carrier_ok(adapter->netdev)) { 8066 if (ixgbe_ring_tx_pending(adapter) || 8067 ixgbe_vf_tx_pending(adapter)) { 8068 /* We've lost link, so the controller stops DMA, 8069 * but we've got queued Tx work that's never going 8070 * to get done, so reset controller to flush Tx. 8071 * (Do the reset outside of interrupt context). 8072 */ 8073 e_warn(drv, "initiating reset to clear Tx work after link loss\n"); 8074 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 8075 } 8076 } 8077 } 8078 8079 #ifdef CONFIG_PCI_IOV 8080 static void ixgbe_bad_vf_abort(struct ixgbe_adapter *adapter, u32 vf) 8081 { 8082 struct ixgbe_hw *hw = &adapter->hw; 8083 8084 if (adapter->hw.mac.type == ixgbe_mac_82599EB && 8085 adapter->flags2 & IXGBE_FLAG2_AUTO_DISABLE_VF) { 8086 adapter->vfinfo[vf].primary_abort_count++; 8087 if (adapter->vfinfo[vf].primary_abort_count == 8088 IXGBE_PRIMARY_ABORT_LIMIT) { 8089 ixgbe_set_vf_link_state(adapter, vf, 8090 IFLA_VF_LINK_STATE_DISABLE); 8091 adapter->vfinfo[vf].primary_abort_count = 0; 8092 8093 e_info(drv, 8094 "Malicious Driver Detection event detected on PF %d VF %d MAC: %pM mdd-disable-vf=on", 8095 hw->bus.func, vf, 8096 adapter->vfinfo[vf].vf_mac_addresses); 8097 } 8098 } 8099 } 8100 8101 static void ixgbe_check_for_bad_vf(struct ixgbe_adapter *adapter) 8102 { 8103 struct ixgbe_hw *hw = &adapter->hw; 8104 struct pci_dev *pdev = adapter->pdev; 8105 unsigned int vf; 8106 u32 gpc; 8107 8108 if (!(netif_carrier_ok(adapter->netdev))) 8109 return; 8110 8111 gpc = IXGBE_READ_REG(hw, IXGBE_TXDGPC); 8112 if (gpc) /* If incrementing then no need for the check below */ 8113 return; 8114 /* Check to see if a bad DMA write target from an errant or 8115 * malicious VF has caused a PCIe error. If so then we can 8116 * issue a VFLR to the offending VF(s) and then resume without 8117 * requesting a full slot reset. 8118 */ 8119 8120 if (!pdev) 8121 return; 8122 8123 /* check status reg for all VFs owned by this PF */ 8124 for (vf = 0; vf < adapter->num_vfs; ++vf) { 8125 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev; 8126 u16 status_reg; 8127 8128 if (!vfdev) 8129 continue; 8130 pci_read_config_word(vfdev, PCI_STATUS, &status_reg); 8131 if (status_reg != IXGBE_FAILED_READ_CFG_WORD && 8132 status_reg & PCI_STATUS_REC_MASTER_ABORT) { 8133 ixgbe_bad_vf_abort(adapter, vf); 8134 pcie_flr(vfdev); 8135 } 8136 } 8137 } 8138 8139 static void ixgbe_spoof_check(struct ixgbe_adapter *adapter) 8140 { 8141 u32 ssvpc; 8142 8143 /* Do not perform spoof check for 82598 or if not in IOV mode */ 8144 if (adapter->hw.mac.type == ixgbe_mac_82598EB || 8145 adapter->num_vfs == 0) 8146 return; 8147 8148 ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC); 8149 8150 /* 8151 * ssvpc register is cleared on read, if zero then no 8152 * spoofed packets in the last interval. 8153 */ 8154 if (!ssvpc) 8155 return; 8156 8157 e_warn(drv, "%u Spoofed packets detected\n", ssvpc); 8158 } 8159 #else 8160 static void ixgbe_spoof_check(struct ixgbe_adapter __always_unused *adapter) 8161 { 8162 } 8163 8164 static void 8165 ixgbe_check_for_bad_vf(struct ixgbe_adapter __always_unused *adapter) 8166 { 8167 } 8168 #endif /* CONFIG_PCI_IOV */ 8169 8170 8171 /** 8172 * ixgbe_watchdog_subtask - check and bring link up 8173 * @adapter: pointer to the device adapter structure 8174 **/ 8175 static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter) 8176 { 8177 /* if interface is down, removing or resetting, do nothing */ 8178 if (test_bit(__IXGBE_DOWN, &adapter->state) || 8179 test_bit(__IXGBE_REMOVING, &adapter->state) || 8180 test_bit(__IXGBE_RESETTING, &adapter->state)) 8181 return; 8182 8183 ixgbe_watchdog_update_link(adapter); 8184 8185 if (adapter->link_up) 8186 ixgbe_watchdog_link_is_up(adapter); 8187 else 8188 ixgbe_watchdog_link_is_down(adapter); 8189 8190 ixgbe_check_for_bad_vf(adapter); 8191 ixgbe_spoof_check(adapter); 8192 ixgbe_update_stats(adapter); 8193 8194 ixgbe_watchdog_flush_tx(adapter); 8195 } 8196 8197 /** 8198 * ixgbe_sfp_detection_subtask - poll for SFP+ cable 8199 * @adapter: the ixgbe adapter structure 8200 **/ 8201 static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter) 8202 { 8203 struct ixgbe_hw *hw = &adapter->hw; 8204 int err; 8205 8206 /* not searching for SFP so there is nothing to do here */ 8207 if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) && 8208 !(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) 8209 return; 8210 8211 if (adapter->sfp_poll_time && 8212 time_after(adapter->sfp_poll_time, jiffies)) 8213 return; /* If not yet time to poll for SFP */ 8214 8215 /* someone else is in init, wait until next service event */ 8216 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 8217 return; 8218 8219 adapter->sfp_poll_time = jiffies + IXGBE_SFP_POLL_JIFFIES - 1; 8220 8221 err = hw->phy.ops.identify_sfp(hw); 8222 if (err == -EOPNOTSUPP) 8223 goto sfp_out; 8224 8225 if (err == -ENOENT) { 8226 /* If no cable is present, then we need to reset 8227 * the next time we find a good cable. */ 8228 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 8229 } 8230 8231 /* exit on error */ 8232 if (err) 8233 goto sfp_out; 8234 8235 /* exit if reset not needed */ 8236 if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) 8237 goto sfp_out; 8238 8239 adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET; 8240 8241 /* 8242 * A module may be identified correctly, but the EEPROM may not have 8243 * support for that module. setup_sfp() will fail in that case, so 8244 * we should not allow that module to load. 8245 */ 8246 if (hw->mac.type == ixgbe_mac_82598EB) 8247 err = hw->phy.ops.reset(hw); 8248 else 8249 err = hw->mac.ops.setup_sfp(hw); 8250 8251 if (err == -EOPNOTSUPP) 8252 goto sfp_out; 8253 8254 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; 8255 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type); 8256 8257 sfp_out: 8258 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 8259 8260 if (err == -EOPNOTSUPP && 8261 adapter->netdev->reg_state == NETREG_REGISTERED) { 8262 e_dev_err("failed to initialize because an unsupported " 8263 "SFP+ module type was detected.\n"); 8264 e_dev_err("Reload the driver after installing a " 8265 "supported module.\n"); 8266 unregister_netdev(adapter->netdev); 8267 } 8268 } 8269 8270 /** 8271 * ixgbe_sfp_link_config_subtask - set up link SFP after module install 8272 * @adapter: the ixgbe adapter structure 8273 **/ 8274 static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter) 8275 { 8276 struct ixgbe_hw *hw = &adapter->hw; 8277 u32 cap_speed; 8278 u32 speed; 8279 bool autoneg = false; 8280 8281 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG)) 8282 return; 8283 8284 /* someone else is in init, wait until next service event */ 8285 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 8286 return; 8287 8288 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; 8289 8290 hw->mac.ops.get_link_capabilities(hw, &cap_speed, &autoneg); 8291 8292 /* advertise highest capable link speed */ 8293 if (!autoneg && (cap_speed & IXGBE_LINK_SPEED_10GB_FULL)) 8294 speed = IXGBE_LINK_SPEED_10GB_FULL; 8295 else 8296 speed = cap_speed & (IXGBE_LINK_SPEED_10GB_FULL | 8297 IXGBE_LINK_SPEED_1GB_FULL); 8298 8299 if (hw->mac.ops.setup_link) 8300 hw->mac.ops.setup_link(hw, speed, true); 8301 8302 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 8303 adapter->link_check_timeout = jiffies; 8304 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 8305 } 8306 8307 /** 8308 * ixgbe_service_timer - Timer Call-back 8309 * @t: pointer to timer_list structure 8310 **/ 8311 static void ixgbe_service_timer(struct timer_list *t) 8312 { 8313 struct ixgbe_adapter *adapter = timer_container_of(adapter, t, 8314 service_timer); 8315 unsigned long next_event_offset; 8316 8317 /* poll faster when waiting for link */ 8318 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) 8319 next_event_offset = HZ / 10; 8320 else 8321 next_event_offset = HZ * 2; 8322 8323 /* Reset the timer */ 8324 mod_timer(&adapter->service_timer, next_event_offset + jiffies); 8325 8326 ixgbe_service_event_schedule(adapter); 8327 } 8328 8329 static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter *adapter) 8330 { 8331 struct ixgbe_hw *hw = &adapter->hw; 8332 bool overtemp; 8333 8334 if (!(adapter->flags2 & IXGBE_FLAG2_PHY_INTERRUPT)) 8335 return; 8336 8337 adapter->flags2 &= ~IXGBE_FLAG2_PHY_INTERRUPT; 8338 8339 if (!hw->phy.ops.handle_lasi) 8340 return; 8341 8342 hw->phy.ops.handle_lasi(&adapter->hw, &overtemp); 8343 if (overtemp) 8344 e_crit(drv, "%s\n", ixgbe_overheat_msg); 8345 } 8346 8347 static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter) 8348 { 8349 if (!test_and_clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state)) 8350 return; 8351 8352 rtnl_lock(); 8353 /* If we're already down, removing or resetting, just bail */ 8354 if (test_bit(__IXGBE_DOWN, &adapter->state) || 8355 test_bit(__IXGBE_REMOVING, &adapter->state) || 8356 test_bit(__IXGBE_RESETTING, &adapter->state)) { 8357 rtnl_unlock(); 8358 return; 8359 } 8360 8361 ixgbe_dump(adapter); 8362 netdev_err(adapter->netdev, "Reset adapter\n"); 8363 adapter->tx_timeout_count++; 8364 8365 ixgbe_reinit_locked(adapter); 8366 rtnl_unlock(); 8367 } 8368 8369 static int ixgbe_check_fw_api_mismatch(struct ixgbe_adapter *adapter) 8370 { 8371 struct ixgbe_hw *hw = &adapter->hw; 8372 8373 if (hw->mac.type != ixgbe_mac_e610) 8374 return 0; 8375 8376 if (hw->mac.ops.get_fw_ver && hw->mac.ops.get_fw_ver(hw)) 8377 return 0; 8378 8379 if (hw->api_maj_ver > IXGBE_FW_API_VER_MAJOR) { 8380 e_dev_err("The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n"); 8381 8382 adapter->flags2 |= IXGBE_FLAG2_API_MISMATCH; 8383 return -EOPNOTSUPP; 8384 } else if (hw->api_maj_ver == IXGBE_FW_API_VER_MAJOR && 8385 hw->api_min_ver > IXGBE_FW_API_VER_MINOR + IXGBE_FW_API_VER_DIFF_ALLOWED) { 8386 e_dev_info("The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n"); 8387 adapter->flags2 |= IXGBE_FLAG2_API_MISMATCH; 8388 } else if (hw->api_maj_ver < IXGBE_FW_API_VER_MAJOR || 8389 hw->api_min_ver < IXGBE_FW_API_VER_MINOR - IXGBE_FW_API_VER_DIFF_ALLOWED) { 8390 e_dev_info("The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n"); 8391 adapter->flags2 |= IXGBE_FLAG2_API_MISMATCH; 8392 } 8393 8394 return 0; 8395 } 8396 8397 /** 8398 * ixgbe_check_fw_error - Check firmware for errors 8399 * @adapter: the adapter private structure 8400 * 8401 * Check firmware errors in register FWSM 8402 */ 8403 static bool ixgbe_check_fw_error(struct ixgbe_adapter *adapter) 8404 { 8405 struct ixgbe_hw *hw = &adapter->hw; 8406 u32 fwsm; 8407 int err; 8408 8409 /* read fwsm.ext_err_ind register and log errors */ 8410 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw)); 8411 8412 /* skip if E610's FW is reloading, warning in that case may be misleading */ 8413 if (fwsm & IXGBE_FWSM_EXT_ERR_IND_MASK || 8414 (!(fwsm & IXGBE_FWSM_FW_VAL_BIT) && !(hw->mac.type == ixgbe_mac_e610))) 8415 e_dev_warn("Warning firmware error detected FWSM: 0x%08X\n", 8416 fwsm); 8417 8418 if (hw->mac.ops.fw_recovery_mode && hw->mac.ops.fw_recovery_mode(hw)) { 8419 e_dev_err("Firmware recovery mode detected. Limiting functionality. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware recovery mode.\n"); 8420 return true; 8421 } 8422 if (!(adapter->flags2 & IXGBE_FLAG2_API_MISMATCH)) { 8423 err = ixgbe_check_fw_api_mismatch(adapter); 8424 if (err) 8425 return true; 8426 } 8427 8428 /* return here if FW rollback mode has been already detected */ 8429 if (adapter->flags2 & IXGBE_FLAG2_FW_ROLLBACK) 8430 return false; 8431 8432 if (hw->mac.ops.fw_rollback_mode && hw->mac.ops.fw_rollback_mode(hw)) { 8433 struct ixgbe_nvm_info *nvm_info = &adapter->hw.flash.nvm; 8434 char ver_buff[64] = ""; 8435 8436 if (hw->mac.ops.get_fw_ver && hw->mac.ops.get_fw_ver(hw)) 8437 goto no_version; 8438 8439 if (hw->mac.ops.get_nvm_ver && 8440 hw->mac.ops.get_nvm_ver(hw, nvm_info)) 8441 goto no_version; 8442 8443 snprintf(ver_buff, sizeof(ver_buff), 8444 "Current version is NVM:%x.%x.%x, FW:%d.%d. ", 8445 nvm_info->major, nvm_info->minor, nvm_info->eetrack, 8446 hw->fw_maj_ver, hw->fw_maj_ver); 8447 no_version: 8448 e_dev_warn("Firmware rollback mode detected. %sDevice may exhibit limited functionality. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware rollback mode.", 8449 ver_buff); 8450 8451 adapter->flags2 |= IXGBE_FLAG2_FW_ROLLBACK; 8452 } 8453 8454 return false; 8455 } 8456 8457 static void ixgbe_recovery_service_task(struct work_struct *work) 8458 { 8459 struct ixgbe_adapter *adapter = container_of(work, 8460 struct ixgbe_adapter, 8461 service_task); 8462 8463 ixgbe_handle_fw_event(adapter); 8464 ixgbe_service_event_complete(adapter); 8465 8466 mod_timer(&adapter->service_timer, jiffies + msecs_to_jiffies(100)); 8467 } 8468 8469 /** 8470 * ixgbe_service_task - manages and runs subtasks 8471 * @work: pointer to work_struct containing our data 8472 **/ 8473 static void ixgbe_service_task(struct work_struct *work) 8474 { 8475 struct ixgbe_adapter *adapter = container_of(work, 8476 struct ixgbe_adapter, 8477 service_task); 8478 if (ixgbe_removed(adapter->hw.hw_addr)) { 8479 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 8480 rtnl_lock(); 8481 ixgbe_down(adapter); 8482 rtnl_unlock(); 8483 } 8484 ixgbe_service_event_complete(adapter); 8485 return; 8486 } 8487 if (ixgbe_check_fw_error(adapter)) { 8488 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 8489 if (adapter->mii_bus) { 8490 mdiobus_unregister(adapter->mii_bus); 8491 adapter->mii_bus = NULL; 8492 } 8493 unregister_netdev(adapter->netdev); 8494 } 8495 ixgbe_service_event_complete(adapter); 8496 return; 8497 } 8498 if (adapter->hw.mac.type == ixgbe_mac_e610) { 8499 if (adapter->flags2 & IXGBE_FLAG2_FW_ASYNC_EVENT) 8500 ixgbe_handle_fw_event(adapter); 8501 ixgbe_check_media_subtask(adapter); 8502 } 8503 ixgbe_reset_subtask(adapter); 8504 ixgbe_phy_interrupt_subtask(adapter); 8505 ixgbe_sfp_detection_subtask(adapter); 8506 ixgbe_sfp_link_config_subtask(adapter); 8507 ixgbe_check_overtemp_subtask(adapter); 8508 ixgbe_watchdog_subtask(adapter); 8509 ixgbe_fdir_reinit_subtask(adapter); 8510 ixgbe_check_hang_subtask(adapter); 8511 8512 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) { 8513 ixgbe_ptp_overflow_check(adapter); 8514 if (adapter->flags & IXGBE_FLAG_RX_HWTSTAMP_IN_REGISTER) 8515 ixgbe_ptp_rx_hang(adapter); 8516 ixgbe_ptp_tx_hang(adapter); 8517 } 8518 8519 ixgbe_service_event_complete(adapter); 8520 } 8521 8522 static int ixgbe_tso(struct ixgbe_ring *tx_ring, 8523 struct ixgbe_tx_buffer *first, 8524 u8 *hdr_len, 8525 struct ixgbe_ipsec_tx_data *itd) 8526 { 8527 u32 vlan_macip_lens, type_tucmd, mss_l4len_idx; 8528 struct sk_buff *skb = first->skb; 8529 union { 8530 struct iphdr *v4; 8531 struct ipv6hdr *v6; 8532 unsigned char *hdr; 8533 } ip; 8534 union { 8535 struct tcphdr *tcp; 8536 struct udphdr *udp; 8537 unsigned char *hdr; 8538 } l4; 8539 u32 paylen, l4_offset; 8540 u32 fceof_saidx = 0; 8541 int err; 8542 8543 if (skb->ip_summed != CHECKSUM_PARTIAL) 8544 return 0; 8545 8546 if (!skb_is_gso(skb)) 8547 return 0; 8548 8549 err = skb_cow_head(skb, 0); 8550 if (err < 0) 8551 return err; 8552 8553 if (eth_p_mpls(first->protocol)) 8554 ip.hdr = skb_inner_network_header(skb); 8555 else 8556 ip.hdr = skb_network_header(skb); 8557 l4.hdr = skb_checksum_start(skb); 8558 8559 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ 8560 type_tucmd = (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ? 8561 IXGBE_ADVTXD_TUCMD_L4T_UDP : IXGBE_ADVTXD_TUCMD_L4T_TCP; 8562 8563 /* initialize outer IP header fields */ 8564 if (ip.v4->version == 4) { 8565 unsigned char *csum_start = skb_checksum_start(skb); 8566 unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4); 8567 int len = csum_start - trans_start; 8568 8569 /* IP header will have to cancel out any data that 8570 * is not a part of the outer IP header, so set to 8571 * a reverse csum if needed, else init check to 0. 8572 */ 8573 ip.v4->check = (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) ? 8574 csum_fold(csum_partial(trans_start, 8575 len, 0)) : 0; 8576 type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4; 8577 8578 ip.v4->tot_len = 0; 8579 first->tx_flags |= IXGBE_TX_FLAGS_TSO | 8580 IXGBE_TX_FLAGS_CSUM | 8581 IXGBE_TX_FLAGS_IPV4; 8582 } else { 8583 ip.v6->payload_len = 0; 8584 first->tx_flags |= IXGBE_TX_FLAGS_TSO | 8585 IXGBE_TX_FLAGS_CSUM; 8586 } 8587 8588 /* determine offset of inner transport header */ 8589 l4_offset = l4.hdr - skb->data; 8590 8591 /* remove payload length from inner checksum */ 8592 paylen = skb->len - l4_offset; 8593 8594 if (type_tucmd & IXGBE_ADVTXD_TUCMD_L4T_TCP) { 8595 /* compute length of segmentation header */ 8596 *hdr_len = (l4.tcp->doff * 4) + l4_offset; 8597 csum_replace_by_diff(&l4.tcp->check, 8598 (__force __wsum)htonl(paylen)); 8599 } else { 8600 /* compute length of segmentation header */ 8601 *hdr_len = sizeof(*l4.udp) + l4_offset; 8602 csum_replace_by_diff(&l4.udp->check, 8603 (__force __wsum)htonl(paylen)); 8604 } 8605 8606 /* update gso size and bytecount with header size */ 8607 first->gso_segs = skb_shinfo(skb)->gso_segs; 8608 first->bytecount += (first->gso_segs - 1) * *hdr_len; 8609 8610 /* mss_l4len_id: use 0 as index for TSO */ 8611 mss_l4len_idx = (*hdr_len - l4_offset) << IXGBE_ADVTXD_L4LEN_SHIFT; 8612 mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT; 8613 8614 fceof_saidx |= itd->sa_idx; 8615 type_tucmd |= itd->flags | itd->trailer_len; 8616 8617 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */ 8618 vlan_macip_lens = l4.hdr - ip.hdr; 8619 vlan_macip_lens |= (ip.hdr - skb->data) << IXGBE_ADVTXD_MACLEN_SHIFT; 8620 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; 8621 8622 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, 8623 mss_l4len_idx); 8624 8625 return 1; 8626 } 8627 8628 static void ixgbe_tx_csum(struct ixgbe_ring *tx_ring, 8629 struct ixgbe_tx_buffer *first, 8630 struct ixgbe_ipsec_tx_data *itd) 8631 { 8632 struct sk_buff *skb = first->skb; 8633 u32 vlan_macip_lens = 0; 8634 u32 fceof_saidx = 0; 8635 u32 type_tucmd = 0; 8636 8637 if (skb->ip_summed != CHECKSUM_PARTIAL) { 8638 csum_failed: 8639 if (!(first->tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | 8640 IXGBE_TX_FLAGS_CC))) 8641 return; 8642 goto no_csum; 8643 } 8644 8645 switch (skb->csum_offset) { 8646 case offsetof(struct tcphdr, check): 8647 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP; 8648 fallthrough; 8649 case offsetof(struct udphdr, check): 8650 break; 8651 case offsetof(struct sctphdr, checksum): 8652 /* validate that this is actually an SCTP request */ 8653 if (skb_csum_is_sctp(skb)) { 8654 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_SCTP; 8655 break; 8656 } 8657 fallthrough; 8658 default: 8659 skb_checksum_help(skb); 8660 goto csum_failed; 8661 } 8662 8663 /* update TX checksum flag */ 8664 first->tx_flags |= IXGBE_TX_FLAGS_CSUM; 8665 vlan_macip_lens = skb_checksum_start_offset(skb) - 8666 skb_network_offset(skb); 8667 no_csum: 8668 /* vlan_macip_lens: MACLEN, VLAN tag */ 8669 vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT; 8670 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; 8671 8672 fceof_saidx |= itd->sa_idx; 8673 type_tucmd |= itd->flags | itd->trailer_len; 8674 8675 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, 0); 8676 } 8677 8678 #define IXGBE_SET_FLAG(_input, _flag, _result) \ 8679 ((_flag <= _result) ? \ 8680 ((u32)(_input & _flag) * (_result / _flag)) : \ 8681 ((u32)(_input & _flag) / (_flag / _result))) 8682 8683 static u32 ixgbe_tx_cmd_type(struct sk_buff *skb, u32 tx_flags) 8684 { 8685 /* set type for advanced descriptor with frame checksum insertion */ 8686 u32 cmd_type = IXGBE_ADVTXD_DTYP_DATA | 8687 IXGBE_ADVTXD_DCMD_DEXT | 8688 IXGBE_ADVTXD_DCMD_IFCS; 8689 8690 /* set HW vlan bit if vlan is present */ 8691 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_HW_VLAN, 8692 IXGBE_ADVTXD_DCMD_VLE); 8693 8694 /* set segmentation enable bits for TSO/FSO */ 8695 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSO, 8696 IXGBE_ADVTXD_DCMD_TSE); 8697 8698 /* set timestamp bit if present */ 8699 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSTAMP, 8700 IXGBE_ADVTXD_MAC_TSTAMP); 8701 8702 /* insert frame checksum */ 8703 cmd_type ^= IXGBE_SET_FLAG(skb->no_fcs, 1, IXGBE_ADVTXD_DCMD_IFCS); 8704 8705 return cmd_type; 8706 } 8707 8708 static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc, 8709 u32 tx_flags, unsigned int paylen) 8710 { 8711 u32 olinfo_status = paylen << IXGBE_ADVTXD_PAYLEN_SHIFT; 8712 8713 /* enable L4 checksum for TSO and TX checksum offload */ 8714 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8715 IXGBE_TX_FLAGS_CSUM, 8716 IXGBE_ADVTXD_POPTS_TXSM); 8717 8718 /* enable IPv4 checksum for TSO */ 8719 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8720 IXGBE_TX_FLAGS_IPV4, 8721 IXGBE_ADVTXD_POPTS_IXSM); 8722 8723 /* enable IPsec */ 8724 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8725 IXGBE_TX_FLAGS_IPSEC, 8726 IXGBE_ADVTXD_POPTS_IPSEC); 8727 8728 /* 8729 * Check Context must be set if Tx switch is enabled, which it 8730 * always is for case where virtual functions are running 8731 */ 8732 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8733 IXGBE_TX_FLAGS_CC, 8734 IXGBE_ADVTXD_CC); 8735 8736 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); 8737 } 8738 8739 static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) 8740 { 8741 if (!netif_subqueue_try_stop(tx_ring->netdev, tx_ring->queue_index, 8742 ixgbe_desc_unused(tx_ring), size)) 8743 return -EBUSY; 8744 8745 ++tx_ring->tx_stats.restart_queue; 8746 return 0; 8747 } 8748 8749 static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) 8750 { 8751 if (likely(ixgbe_desc_unused(tx_ring) >= size)) 8752 return 0; 8753 8754 return __ixgbe_maybe_stop_tx(tx_ring, size); 8755 } 8756 8757 static int ixgbe_tx_map(struct ixgbe_ring *tx_ring, 8758 struct ixgbe_tx_buffer *first, 8759 const u8 hdr_len) 8760 { 8761 struct sk_buff *skb = first->skb; 8762 struct ixgbe_tx_buffer *tx_buffer; 8763 union ixgbe_adv_tx_desc *tx_desc; 8764 skb_frag_t *frag; 8765 dma_addr_t dma; 8766 unsigned int data_len, size; 8767 u32 tx_flags = first->tx_flags; 8768 u32 cmd_type = ixgbe_tx_cmd_type(skb, tx_flags); 8769 u16 i = tx_ring->next_to_use; 8770 8771 tx_desc = IXGBE_TX_DESC(tx_ring, i); 8772 8773 ixgbe_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len); 8774 8775 size = skb_headlen(skb); 8776 data_len = skb->data_len; 8777 8778 #ifdef IXGBE_FCOE 8779 if (tx_flags & IXGBE_TX_FLAGS_FCOE) { 8780 if (data_len < sizeof(struct fcoe_crc_eof)) { 8781 size -= sizeof(struct fcoe_crc_eof) - data_len; 8782 data_len = 0; 8783 } else { 8784 data_len -= sizeof(struct fcoe_crc_eof); 8785 } 8786 } 8787 8788 #endif 8789 dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); 8790 8791 tx_buffer = first; 8792 8793 for (frag = &skb_shinfo(skb)->frags[0];; frag++) { 8794 if (dma_mapping_error(tx_ring->dev, dma)) 8795 goto dma_error; 8796 8797 /* record length, and DMA address */ 8798 dma_unmap_len_set(tx_buffer, len, size); 8799 dma_unmap_addr_set(tx_buffer, dma, dma); 8800 8801 tx_desc->read.buffer_addr = cpu_to_le64(dma); 8802 8803 while (unlikely(size > IXGBE_MAX_DATA_PER_TXD)) { 8804 tx_desc->read.cmd_type_len = 8805 cpu_to_le32(cmd_type ^ IXGBE_MAX_DATA_PER_TXD); 8806 8807 i++; 8808 tx_desc++; 8809 if (i == tx_ring->count) { 8810 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 8811 i = 0; 8812 } 8813 tx_desc->read.olinfo_status = 0; 8814 8815 dma += IXGBE_MAX_DATA_PER_TXD; 8816 size -= IXGBE_MAX_DATA_PER_TXD; 8817 8818 tx_desc->read.buffer_addr = cpu_to_le64(dma); 8819 } 8820 8821 if (likely(!data_len)) 8822 break; 8823 8824 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size); 8825 8826 i++; 8827 tx_desc++; 8828 if (i == tx_ring->count) { 8829 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 8830 i = 0; 8831 } 8832 tx_desc->read.olinfo_status = 0; 8833 8834 #ifdef IXGBE_FCOE 8835 size = min_t(unsigned int, data_len, skb_frag_size(frag)); 8836 #else 8837 size = skb_frag_size(frag); 8838 #endif 8839 data_len -= size; 8840 8841 dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size, 8842 DMA_TO_DEVICE); 8843 8844 tx_buffer = &tx_ring->tx_buffer_info[i]; 8845 } 8846 8847 /* write last descriptor with RS and EOP bits */ 8848 cmd_type |= size | IXGBE_TXD_CMD; 8849 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 8850 8851 netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); 8852 8853 /* set the timestamp */ 8854 first->time_stamp = jiffies; 8855 8856 skb_tx_timestamp(skb); 8857 8858 /* 8859 * Force memory writes to complete before letting h/w know there 8860 * are new descriptors to fetch. (Only applicable for weak-ordered 8861 * memory model archs, such as IA-64). 8862 * 8863 * We also need this memory barrier to make certain all of the 8864 * status bits have been updated before next_to_watch is written. 8865 */ 8866 wmb(); 8867 8868 /* set next_to_watch value indicating a packet is present */ 8869 first->next_to_watch = tx_desc; 8870 8871 i++; 8872 if (i == tx_ring->count) 8873 i = 0; 8874 8875 tx_ring->next_to_use = i; 8876 8877 ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED); 8878 8879 if (netif_xmit_stopped(txring_txq(tx_ring)) || !netdev_xmit_more()) { 8880 writel(i, tx_ring->tail); 8881 } 8882 8883 return 0; 8884 dma_error: 8885 dev_err(tx_ring->dev, "TX DMA map failed\n"); 8886 8887 /* clear dma mappings for failed tx_buffer_info map */ 8888 for (;;) { 8889 tx_buffer = &tx_ring->tx_buffer_info[i]; 8890 if (dma_unmap_len(tx_buffer, len)) 8891 dma_unmap_page(tx_ring->dev, 8892 dma_unmap_addr(tx_buffer, dma), 8893 dma_unmap_len(tx_buffer, len), 8894 DMA_TO_DEVICE); 8895 dma_unmap_len_set(tx_buffer, len, 0); 8896 if (tx_buffer == first) 8897 break; 8898 if (i == 0) 8899 i += tx_ring->count; 8900 i--; 8901 } 8902 8903 dev_kfree_skb_any(first->skb); 8904 first->skb = NULL; 8905 8906 tx_ring->next_to_use = i; 8907 8908 return -1; 8909 } 8910 8911 static void ixgbe_atr(struct ixgbe_ring *ring, 8912 struct ixgbe_tx_buffer *first) 8913 { 8914 struct ixgbe_q_vector *q_vector = ring->q_vector; 8915 union ixgbe_atr_hash_dword input = { .dword = 0 }; 8916 union ixgbe_atr_hash_dword common = { .dword = 0 }; 8917 union { 8918 unsigned char *network; 8919 struct iphdr *ipv4; 8920 struct ipv6hdr *ipv6; 8921 } hdr; 8922 struct tcphdr *th; 8923 unsigned int hlen; 8924 struct sk_buff *skb; 8925 __be16 vlan_id; 8926 int l4_proto; 8927 8928 /* if ring doesn't have a interrupt vector, cannot perform ATR */ 8929 if (!q_vector) 8930 return; 8931 8932 /* do nothing if sampling is disabled */ 8933 if (!ring->atr_sample_rate) 8934 return; 8935 8936 ring->atr_count++; 8937 8938 /* currently only IPv4/IPv6 with TCP is supported */ 8939 if ((first->protocol != htons(ETH_P_IP)) && 8940 (first->protocol != htons(ETH_P_IPV6))) 8941 return; 8942 8943 /* snag network header to get L4 type and address */ 8944 skb = first->skb; 8945 hdr.network = skb_network_header(skb); 8946 if (unlikely(hdr.network <= skb->data)) 8947 return; 8948 if (skb->encapsulation && 8949 first->protocol == htons(ETH_P_IP) && 8950 hdr.ipv4->protocol == IPPROTO_UDP) { 8951 struct ixgbe_adapter *adapter = q_vector->adapter; 8952 8953 if (unlikely(skb_tail_pointer(skb) < hdr.network + 8954 vxlan_headroom(0))) 8955 return; 8956 8957 /* verify the port is recognized as VXLAN */ 8958 if (adapter->vxlan_port && 8959 udp_hdr(skb)->dest == adapter->vxlan_port) 8960 hdr.network = skb_inner_network_header(skb); 8961 8962 if (adapter->geneve_port && 8963 udp_hdr(skb)->dest == adapter->geneve_port) 8964 hdr.network = skb_inner_network_header(skb); 8965 } 8966 8967 /* Make sure we have at least [minimum IPv4 header + TCP] 8968 * or [IPv6 header] bytes 8969 */ 8970 if (unlikely(skb_tail_pointer(skb) < hdr.network + 40)) 8971 return; 8972 8973 /* Currently only IPv4/IPv6 with TCP is supported */ 8974 switch (hdr.ipv4->version) { 8975 case IPVERSION: 8976 /* access ihl as u8 to avoid unaligned access on ia64 */ 8977 hlen = (hdr.network[0] & 0x0F) << 2; 8978 l4_proto = hdr.ipv4->protocol; 8979 break; 8980 case 6: 8981 hlen = hdr.network - skb->data; 8982 l4_proto = ipv6_find_hdr(skb, &hlen, IPPROTO_TCP, NULL, NULL); 8983 hlen -= hdr.network - skb->data; 8984 break; 8985 default: 8986 return; 8987 } 8988 8989 if (l4_proto != IPPROTO_TCP) 8990 return; 8991 8992 if (unlikely(skb_tail_pointer(skb) < hdr.network + 8993 hlen + sizeof(struct tcphdr))) 8994 return; 8995 8996 th = (struct tcphdr *)(hdr.network + hlen); 8997 8998 /* skip this packet since the socket is closing */ 8999 if (th->fin) 9000 return; 9001 9002 /* sample on all syn packets or once every atr sample count */ 9003 if (!th->syn && (ring->atr_count < ring->atr_sample_rate)) 9004 return; 9005 9006 /* reset sample count */ 9007 ring->atr_count = 0; 9008 9009 vlan_id = htons(first->tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT); 9010 9011 /* 9012 * src and dst are inverted, think how the receiver sees them 9013 * 9014 * The input is broken into two sections, a non-compressed section 9015 * containing vm_pool, vlan_id, and flow_type. The rest of the data 9016 * is XORed together and stored in the compressed dword. 9017 */ 9018 input.formatted.vlan_id = vlan_id; 9019 9020 /* 9021 * since src port and flex bytes occupy the same word XOR them together 9022 * and write the value to source port portion of compressed dword 9023 */ 9024 if (first->tx_flags & (IXGBE_TX_FLAGS_SW_VLAN | IXGBE_TX_FLAGS_HW_VLAN)) 9025 common.port.src ^= th->dest ^ htons(ETH_P_8021Q); 9026 else 9027 common.port.src ^= th->dest ^ first->protocol; 9028 common.port.dst ^= th->source; 9029 9030 switch (hdr.ipv4->version) { 9031 case IPVERSION: 9032 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4; 9033 common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr; 9034 break; 9035 case 6: 9036 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6; 9037 common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^ 9038 hdr.ipv6->saddr.s6_addr32[1] ^ 9039 hdr.ipv6->saddr.s6_addr32[2] ^ 9040 hdr.ipv6->saddr.s6_addr32[3] ^ 9041 hdr.ipv6->daddr.s6_addr32[0] ^ 9042 hdr.ipv6->daddr.s6_addr32[1] ^ 9043 hdr.ipv6->daddr.s6_addr32[2] ^ 9044 hdr.ipv6->daddr.s6_addr32[3]; 9045 break; 9046 default: 9047 break; 9048 } 9049 9050 if (hdr.network != skb_network_header(skb)) 9051 input.formatted.flow_type |= IXGBE_ATR_L4TYPE_TUNNEL_MASK; 9052 9053 /* This assumes the Rx queue and Tx queue are bound to the same CPU */ 9054 ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw, 9055 input, common, ring->queue_index); 9056 } 9057 9058 #ifdef IXGBE_FCOE 9059 static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb, 9060 struct net_device *sb_dev) 9061 { 9062 struct ixgbe_adapter *adapter; 9063 struct ixgbe_ring_feature *f; 9064 int txq; 9065 9066 if (sb_dev) { 9067 u8 tc = netdev_get_prio_tc_map(dev, skb->priority); 9068 struct net_device *vdev = sb_dev; 9069 9070 txq = vdev->tc_to_txq[tc].offset; 9071 txq += reciprocal_scale(skb_get_hash(skb), 9072 vdev->tc_to_txq[tc].count); 9073 9074 return txq; 9075 } 9076 9077 /* 9078 * only execute the code below if protocol is FCoE 9079 * or FIP and we have FCoE enabled on the adapter 9080 */ 9081 switch (vlan_get_protocol(skb)) { 9082 case htons(ETH_P_FCOE): 9083 case htons(ETH_P_FIP): 9084 adapter = ixgbe_from_netdev(dev); 9085 9086 if (!sb_dev && (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) 9087 break; 9088 fallthrough; 9089 default: 9090 return netdev_pick_tx(dev, skb, sb_dev); 9091 } 9092 9093 f = &adapter->ring_feature[RING_F_FCOE]; 9094 9095 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 9096 smp_processor_id(); 9097 9098 while (txq >= f->indices) 9099 txq -= f->indices; 9100 9101 return txq + f->offset; 9102 } 9103 9104 #endif 9105 int ixgbe_xmit_xdp_ring(struct ixgbe_ring *ring, 9106 struct xdp_frame *xdpf) 9107 { 9108 struct skb_shared_info *sinfo = xdp_get_shared_info_from_frame(xdpf); 9109 u8 nr_frags = unlikely(xdp_frame_has_frags(xdpf)) ? sinfo->nr_frags : 0; 9110 u16 i = 0, index = ring->next_to_use; 9111 struct ixgbe_tx_buffer *tx_head = &ring->tx_buffer_info[index]; 9112 struct ixgbe_tx_buffer *tx_buff = tx_head; 9113 union ixgbe_adv_tx_desc *tx_desc = IXGBE_TX_DESC(ring, index); 9114 u32 cmd_type, len = xdpf->len; 9115 void *data = xdpf->data; 9116 9117 if (unlikely(ixgbe_desc_unused(ring) < 1 + nr_frags)) 9118 return IXGBE_XDP_CONSUMED; 9119 9120 tx_head->bytecount = xdp_get_frame_len(xdpf); 9121 tx_head->gso_segs = 1; 9122 tx_head->xdpf = xdpf; 9123 9124 tx_desc->read.olinfo_status = 9125 cpu_to_le32(tx_head->bytecount << IXGBE_ADVTXD_PAYLEN_SHIFT); 9126 9127 for (;;) { 9128 dma_addr_t dma; 9129 9130 dma = dma_map_single(ring->dev, data, len, DMA_TO_DEVICE); 9131 if (dma_mapping_error(ring->dev, dma)) 9132 goto unmap; 9133 9134 dma_unmap_len_set(tx_buff, len, len); 9135 dma_unmap_addr_set(tx_buff, dma, dma); 9136 9137 cmd_type = IXGBE_ADVTXD_DTYP_DATA | IXGBE_ADVTXD_DCMD_DEXT | 9138 IXGBE_ADVTXD_DCMD_IFCS | len; 9139 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 9140 tx_desc->read.buffer_addr = cpu_to_le64(dma); 9141 tx_buff->protocol = 0; 9142 9143 if (++index == ring->count) 9144 index = 0; 9145 9146 if (i == nr_frags) 9147 break; 9148 9149 tx_buff = &ring->tx_buffer_info[index]; 9150 tx_desc = IXGBE_TX_DESC(ring, index); 9151 tx_desc->read.olinfo_status = 0; 9152 9153 data = skb_frag_address(&sinfo->frags[i]); 9154 len = skb_frag_size(&sinfo->frags[i]); 9155 i++; 9156 } 9157 /* put descriptor type bits */ 9158 tx_desc->read.cmd_type_len |= cpu_to_le32(IXGBE_TXD_CMD); 9159 9160 /* Avoid any potential race with xdp_xmit and cleanup */ 9161 smp_wmb(); 9162 9163 tx_head->next_to_watch = tx_desc; 9164 ring->next_to_use = index; 9165 9166 return IXGBE_XDP_TX; 9167 9168 unmap: 9169 for (;;) { 9170 tx_buff = &ring->tx_buffer_info[index]; 9171 if (dma_unmap_len(tx_buff, len)) 9172 dma_unmap_page(ring->dev, dma_unmap_addr(tx_buff, dma), 9173 dma_unmap_len(tx_buff, len), 9174 DMA_TO_DEVICE); 9175 dma_unmap_len_set(tx_buff, len, 0); 9176 if (tx_buff == tx_head) 9177 break; 9178 9179 if (!index) 9180 index += ring->count; 9181 index--; 9182 } 9183 9184 return IXGBE_XDP_CONSUMED; 9185 } 9186 9187 netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, 9188 struct ixgbe_adapter *adapter, 9189 struct ixgbe_ring *tx_ring) 9190 { 9191 struct ixgbe_tx_buffer *first; 9192 int tso; 9193 u32 tx_flags = 0; 9194 unsigned short f; 9195 u16 count = TXD_USE_COUNT(skb_headlen(skb)); 9196 struct ixgbe_ipsec_tx_data ipsec_tx = { 0 }; 9197 __be16 protocol = skb->protocol; 9198 u8 hdr_len = 0; 9199 9200 /* 9201 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD, 9202 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD, 9203 * + 2 desc gap to keep tail from touching head, 9204 * + 1 desc for context descriptor, 9205 * otherwise try next time 9206 */ 9207 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) 9208 count += TXD_USE_COUNT(skb_frag_size( 9209 &skb_shinfo(skb)->frags[f])); 9210 9211 if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) { 9212 tx_ring->tx_stats.tx_busy++; 9213 return NETDEV_TX_BUSY; 9214 } 9215 9216 /* record the location of the first descriptor for this packet */ 9217 first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; 9218 first->skb = skb; 9219 first->bytecount = skb->len; 9220 first->gso_segs = 1; 9221 9222 /* if we have a HW VLAN tag being added default to the HW one */ 9223 if (skb_vlan_tag_present(skb)) { 9224 tx_flags |= skb_vlan_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT; 9225 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; 9226 /* else if it is a SW VLAN check the next protocol and store the tag */ 9227 } else if (protocol == htons(ETH_P_8021Q)) { 9228 struct vlan_hdr *vhdr, _vhdr; 9229 vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr), &_vhdr); 9230 if (!vhdr) 9231 goto out_drop; 9232 9233 tx_flags |= ntohs(vhdr->h_vlan_TCI) << 9234 IXGBE_TX_FLAGS_VLAN_SHIFT; 9235 tx_flags |= IXGBE_TX_FLAGS_SW_VLAN; 9236 } 9237 protocol = vlan_get_protocol(skb); 9238 9239 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 9240 adapter->ptp_clock) { 9241 if (adapter->tstamp_config.tx_type == HWTSTAMP_TX_ON && 9242 !test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS, 9243 &adapter->state)) { 9244 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 9245 tx_flags |= IXGBE_TX_FLAGS_TSTAMP; 9246 9247 /* schedule check for Tx timestamp */ 9248 adapter->ptp_tx_skb = skb_get(skb); 9249 adapter->ptp_tx_start = jiffies; 9250 schedule_work(&adapter->ptp_tx_work); 9251 } else { 9252 adapter->tx_hwtstamp_skipped++; 9253 } 9254 } 9255 9256 #ifdef CONFIG_PCI_IOV 9257 /* 9258 * Use the l2switch_enable flag - would be false if the DMA 9259 * Tx switch had been disabled. 9260 */ 9261 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 9262 tx_flags |= IXGBE_TX_FLAGS_CC; 9263 9264 #endif 9265 /* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */ 9266 if ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && 9267 ((tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | IXGBE_TX_FLAGS_SW_VLAN)) || 9268 (skb->priority != TC_PRIO_CONTROL))) { 9269 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK; 9270 tx_flags |= (skb->priority & 0x7) << 9271 IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT; 9272 if (tx_flags & IXGBE_TX_FLAGS_SW_VLAN) { 9273 struct vlan_ethhdr *vhdr; 9274 9275 if (skb_cow_head(skb, 0)) 9276 goto out_drop; 9277 vhdr = skb_vlan_eth_hdr(skb); 9278 vhdr->h_vlan_TCI = htons(tx_flags >> 9279 IXGBE_TX_FLAGS_VLAN_SHIFT); 9280 } else { 9281 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; 9282 } 9283 } 9284 9285 /* record initial flags and protocol */ 9286 first->tx_flags = tx_flags; 9287 first->protocol = protocol; 9288 9289 #ifdef IXGBE_FCOE 9290 /* setup tx offload for FCoE */ 9291 if ((protocol == htons(ETH_P_FCOE)) && 9292 (tx_ring->netdev->features & (NETIF_F_FSO | NETIF_F_FCOE_CRC))) { 9293 tso = ixgbe_fso(tx_ring, first, &hdr_len); 9294 if (tso < 0) 9295 goto out_drop; 9296 9297 goto xmit_fcoe; 9298 } 9299 9300 #endif /* IXGBE_FCOE */ 9301 9302 #ifdef CONFIG_IXGBE_IPSEC 9303 if (xfrm_offload(skb) && 9304 !ixgbe_ipsec_tx(tx_ring, first, &ipsec_tx)) 9305 goto out_drop; 9306 #endif 9307 tso = ixgbe_tso(tx_ring, first, &hdr_len, &ipsec_tx); 9308 if (tso < 0) 9309 goto out_drop; 9310 else if (!tso) 9311 ixgbe_tx_csum(tx_ring, first, &ipsec_tx); 9312 9313 /* add the ATR filter if ATR is on */ 9314 if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state)) 9315 ixgbe_atr(tx_ring, first); 9316 9317 #ifdef IXGBE_FCOE 9318 xmit_fcoe: 9319 #endif /* IXGBE_FCOE */ 9320 if (ixgbe_tx_map(tx_ring, first, hdr_len)) 9321 goto cleanup_tx_timestamp; 9322 9323 return NETDEV_TX_OK; 9324 9325 out_drop: 9326 dev_kfree_skb_any(first->skb); 9327 first->skb = NULL; 9328 cleanup_tx_timestamp: 9329 if (unlikely(tx_flags & IXGBE_TX_FLAGS_TSTAMP)) { 9330 dev_kfree_skb_any(adapter->ptp_tx_skb); 9331 adapter->ptp_tx_skb = NULL; 9332 cancel_work_sync(&adapter->ptp_tx_work); 9333 clear_bit_unlock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state); 9334 } 9335 9336 return NETDEV_TX_OK; 9337 } 9338 9339 static netdev_tx_t __ixgbe_xmit_frame(struct sk_buff *skb, 9340 struct net_device *netdev, 9341 struct ixgbe_ring *ring) 9342 { 9343 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9344 struct ixgbe_ring *tx_ring; 9345 9346 /* 9347 * The minimum packet size for olinfo paylen is 17 so pad the skb 9348 * in order to meet this minimum size requirement. 9349 */ 9350 if (skb_put_padto(skb, 17)) 9351 return NETDEV_TX_OK; 9352 9353 tx_ring = ring ? ring : adapter->tx_ring[skb_get_queue_mapping(skb)]; 9354 if (unlikely(test_bit(__IXGBE_TX_DISABLED, &tx_ring->state))) 9355 return NETDEV_TX_BUSY; 9356 9357 return ixgbe_xmit_frame_ring(skb, adapter, tx_ring); 9358 } 9359 9360 static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, 9361 struct net_device *netdev) 9362 { 9363 return __ixgbe_xmit_frame(skb, netdev, NULL); 9364 } 9365 9366 /** 9367 * ixgbe_set_mac - Change the Ethernet Address of the NIC 9368 * @netdev: network interface device structure 9369 * @p: pointer to an address structure 9370 * 9371 * Returns 0 on success, negative on failure 9372 **/ 9373 static int ixgbe_set_mac(struct net_device *netdev, void *p) 9374 { 9375 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9376 struct ixgbe_hw *hw = &adapter->hw; 9377 struct sockaddr *addr = p; 9378 9379 if (!is_valid_ether_addr(addr->sa_data)) 9380 return -EADDRNOTAVAIL; 9381 9382 eth_hw_addr_set(netdev, addr->sa_data); 9383 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); 9384 9385 ixgbe_mac_set_default_filter(adapter); 9386 9387 return 0; 9388 } 9389 9390 static int 9391 ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr) 9392 { 9393 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9394 struct ixgbe_hw *hw = &adapter->hw; 9395 u16 value; 9396 int rc; 9397 9398 if (adapter->mii_bus) { 9399 int regnum = addr; 9400 9401 if (devad != MDIO_DEVAD_NONE) 9402 return mdiobus_c45_read(adapter->mii_bus, prtad, 9403 devad, regnum); 9404 9405 return mdiobus_read(adapter->mii_bus, prtad, regnum); 9406 } 9407 9408 if (prtad != hw->phy.mdio.prtad) 9409 return -EINVAL; 9410 rc = hw->phy.ops.read_reg(hw, addr, devad, &value); 9411 if (!rc) 9412 rc = value; 9413 return rc; 9414 } 9415 9416 static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad, 9417 u16 addr, u16 value) 9418 { 9419 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9420 struct ixgbe_hw *hw = &adapter->hw; 9421 9422 if (adapter->mii_bus) { 9423 int regnum = addr; 9424 9425 if (devad != MDIO_DEVAD_NONE) 9426 return mdiobus_c45_write(adapter->mii_bus, prtad, devad, 9427 regnum, value); 9428 9429 return mdiobus_write(adapter->mii_bus, prtad, regnum, value); 9430 } 9431 9432 if (prtad != hw->phy.mdio.prtad) 9433 return -EINVAL; 9434 return hw->phy.ops.write_reg(hw, addr, devad, value); 9435 } 9436 9437 static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd) 9438 { 9439 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9440 9441 switch (cmd) { 9442 case SIOCSHWTSTAMP: 9443 return ixgbe_ptp_set_ts_config(adapter, req); 9444 case SIOCGHWTSTAMP: 9445 return ixgbe_ptp_get_ts_config(adapter, req); 9446 case SIOCGMIIPHY: 9447 if (!adapter->hw.phy.ops.read_reg) 9448 return -EOPNOTSUPP; 9449 fallthrough; 9450 default: 9451 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd); 9452 } 9453 } 9454 9455 /** 9456 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding 9457 * netdev->dev_addrs 9458 * @dev: network interface device structure 9459 * 9460 * Returns non-zero on failure 9461 **/ 9462 static int ixgbe_add_sanmac_netdev(struct net_device *dev) 9463 { 9464 int err = 0; 9465 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 9466 struct ixgbe_hw *hw = &adapter->hw; 9467 9468 if (is_valid_ether_addr(hw->mac.san_addr)) { 9469 rtnl_lock(); 9470 err = dev_addr_add(dev, hw->mac.san_addr, NETDEV_HW_ADDR_T_SAN); 9471 rtnl_unlock(); 9472 9473 /* update SAN MAC vmdq pool selection */ 9474 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0)); 9475 } 9476 return err; 9477 } 9478 9479 /** 9480 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding 9481 * netdev->dev_addrs 9482 * @dev: network interface device structure 9483 * 9484 * Returns non-zero on failure 9485 **/ 9486 static int ixgbe_del_sanmac_netdev(struct net_device *dev) 9487 { 9488 int err = 0; 9489 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 9490 struct ixgbe_mac_info *mac = &adapter->hw.mac; 9491 9492 if (is_valid_ether_addr(mac->san_addr)) { 9493 rtnl_lock(); 9494 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN); 9495 rtnl_unlock(); 9496 } 9497 return err; 9498 } 9499 9500 static void ixgbe_get_ring_stats64(struct rtnl_link_stats64 *stats, 9501 struct ixgbe_ring *ring) 9502 { 9503 u64 bytes, packets; 9504 unsigned int start; 9505 9506 if (ring) { 9507 do { 9508 start = u64_stats_fetch_begin(&ring->syncp); 9509 packets = ring->stats.packets; 9510 bytes = ring->stats.bytes; 9511 } while (u64_stats_fetch_retry(&ring->syncp, start)); 9512 stats->tx_packets += packets; 9513 stats->tx_bytes += bytes; 9514 } 9515 } 9516 9517 static void ixgbe_get_stats64(struct net_device *netdev, 9518 struct rtnl_link_stats64 *stats) 9519 { 9520 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9521 int i; 9522 9523 rcu_read_lock(); 9524 for (i = 0; i < adapter->num_rx_queues; i++) { 9525 struct ixgbe_ring *ring = READ_ONCE(adapter->rx_ring[i]); 9526 u64 bytes, packets; 9527 unsigned int start; 9528 9529 if (ring) { 9530 do { 9531 start = u64_stats_fetch_begin(&ring->syncp); 9532 packets = ring->stats.packets; 9533 bytes = ring->stats.bytes; 9534 } while (u64_stats_fetch_retry(&ring->syncp, start)); 9535 stats->rx_packets += packets; 9536 stats->rx_bytes += bytes; 9537 } 9538 } 9539 9540 for (i = 0; i < adapter->num_tx_queues; i++) { 9541 struct ixgbe_ring *ring = READ_ONCE(adapter->tx_ring[i]); 9542 9543 ixgbe_get_ring_stats64(stats, ring); 9544 } 9545 for (i = 0; i < adapter->num_xdp_queues; i++) { 9546 struct ixgbe_ring *ring = READ_ONCE(adapter->xdp_ring[i]); 9547 9548 ixgbe_get_ring_stats64(stats, ring); 9549 } 9550 rcu_read_unlock(); 9551 9552 /* following stats updated by ixgbe_watchdog_task() */ 9553 stats->multicast = netdev->stats.multicast; 9554 stats->rx_errors = netdev->stats.rx_errors; 9555 stats->rx_length_errors = netdev->stats.rx_length_errors; 9556 stats->rx_crc_errors = netdev->stats.rx_crc_errors; 9557 stats->rx_missed_errors = netdev->stats.rx_missed_errors; 9558 } 9559 9560 static int ixgbe_ndo_get_vf_stats(struct net_device *netdev, int vf, 9561 struct ifla_vf_stats *vf_stats) 9562 { 9563 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9564 9565 if (vf < 0 || vf >= adapter->num_vfs) 9566 return -EINVAL; 9567 9568 vf_stats->rx_packets = adapter->vfinfo[vf].vfstats.gprc; 9569 vf_stats->rx_bytes = adapter->vfinfo[vf].vfstats.gorc; 9570 vf_stats->tx_packets = adapter->vfinfo[vf].vfstats.gptc; 9571 vf_stats->tx_bytes = adapter->vfinfo[vf].vfstats.gotc; 9572 vf_stats->multicast = adapter->vfinfo[vf].vfstats.mprc; 9573 9574 return 0; 9575 } 9576 9577 #ifdef CONFIG_IXGBE_DCB 9578 /** 9579 * ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid. 9580 * @adapter: pointer to ixgbe_adapter 9581 * @tc: number of traffic classes currently enabled 9582 * 9583 * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm 9584 * 802.1Q priority maps to a packet buffer that exists. 9585 */ 9586 static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc) 9587 { 9588 struct ixgbe_hw *hw = &adapter->hw; 9589 u32 reg, rsave; 9590 int i; 9591 9592 /* 82598 have a static priority to TC mapping that can not 9593 * be changed so no validation is needed. 9594 */ 9595 if (hw->mac.type == ixgbe_mac_82598EB) 9596 return; 9597 9598 reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC); 9599 rsave = reg; 9600 9601 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { 9602 u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT); 9603 9604 /* If up2tc is out of bounds default to zero */ 9605 if (up2tc > tc) 9606 reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT); 9607 } 9608 9609 if (reg != rsave) 9610 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg); 9611 9612 return; 9613 } 9614 9615 /** 9616 * ixgbe_set_prio_tc_map - Configure netdev prio tc map 9617 * @adapter: Pointer to adapter struct 9618 * 9619 * Populate the netdev user priority to tc map 9620 */ 9621 static void ixgbe_set_prio_tc_map(struct ixgbe_adapter *adapter) 9622 { 9623 struct net_device *dev = adapter->netdev; 9624 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg; 9625 struct ieee_ets *ets = adapter->ixgbe_ieee_ets; 9626 u8 prio; 9627 9628 for (prio = 0; prio < MAX_USER_PRIORITY; prio++) { 9629 u8 tc = 0; 9630 9631 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) 9632 tc = ixgbe_dcb_get_tc_from_up(dcb_cfg, 0, prio); 9633 else if (ets) 9634 tc = ets->prio_tc[prio]; 9635 9636 netdev_set_prio_tc_map(dev, prio, tc); 9637 } 9638 } 9639 9640 #endif /* CONFIG_IXGBE_DCB */ 9641 static int ixgbe_reassign_macvlan_pool(struct net_device *vdev, 9642 struct netdev_nested_priv *priv) 9643 { 9644 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)priv->data; 9645 struct ixgbe_fwd_adapter *accel; 9646 int pool; 9647 9648 /* we only care about macvlans... */ 9649 if (!netif_is_macvlan(vdev)) 9650 return 0; 9651 9652 /* that have hardware offload enabled... */ 9653 accel = macvlan_accel_priv(vdev); 9654 if (!accel) 9655 return 0; 9656 9657 /* If we can relocate to a different bit do so */ 9658 pool = find_first_zero_bit(adapter->fwd_bitmask, adapter->num_rx_pools); 9659 if (pool < adapter->num_rx_pools) { 9660 set_bit(pool, adapter->fwd_bitmask); 9661 accel->pool = pool; 9662 return 0; 9663 } 9664 9665 /* if we cannot find a free pool then disable the offload */ 9666 netdev_err(vdev, "L2FW offload disabled due to lack of queue resources\n"); 9667 macvlan_release_l2fw_offload(vdev); 9668 9669 /* unbind the queues and drop the subordinate channel config */ 9670 netdev_unbind_sb_channel(adapter->netdev, vdev); 9671 netdev_set_sb_channel(vdev, 0); 9672 9673 kfree(accel); 9674 9675 return 0; 9676 } 9677 9678 static void ixgbe_defrag_macvlan_pools(struct net_device *dev) 9679 { 9680 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 9681 struct netdev_nested_priv priv = { 9682 .data = (void *)adapter, 9683 }; 9684 9685 /* flush any stale bits out of the fwd bitmask */ 9686 bitmap_clear(adapter->fwd_bitmask, 1, 63); 9687 9688 /* walk through upper devices reassigning pools */ 9689 netdev_walk_all_upper_dev_rcu(dev, ixgbe_reassign_macvlan_pool, 9690 &priv); 9691 } 9692 9693 /** 9694 * ixgbe_setup_tc - configure net_device for multiple traffic classes 9695 * 9696 * @dev: net device to configure 9697 * @tc: number of traffic classes to enable 9698 */ 9699 int ixgbe_setup_tc(struct net_device *dev, u8 tc) 9700 { 9701 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 9702 struct ixgbe_hw *hw = &adapter->hw; 9703 9704 /* Hardware supports up to 8 traffic classes */ 9705 if (tc > adapter->dcb_cfg.num_tcs.pg_tcs) 9706 return -EINVAL; 9707 9708 if (hw->mac.type == ixgbe_mac_82598EB && tc && tc < MAX_TRAFFIC_CLASS) 9709 return -EINVAL; 9710 9711 /* Hardware has to reinitialize queues and interrupts to 9712 * match packet buffer alignment. Unfortunately, the 9713 * hardware is not flexible enough to do this dynamically. 9714 */ 9715 if (netif_running(dev)) 9716 ixgbe_close(dev); 9717 else 9718 ixgbe_reset(adapter); 9719 9720 ixgbe_clear_interrupt_scheme(adapter); 9721 9722 #ifdef CONFIG_IXGBE_DCB 9723 if (tc) { 9724 if (adapter->xdp_prog) { 9725 e_warn(probe, "DCB is not supported with XDP\n"); 9726 9727 ixgbe_init_interrupt_scheme(adapter); 9728 if (netif_running(dev)) 9729 ixgbe_open(dev); 9730 return -EINVAL; 9731 } 9732 9733 netdev_set_num_tc(dev, tc); 9734 ixgbe_set_prio_tc_map(adapter); 9735 9736 adapter->hw_tcs = tc; 9737 adapter->flags |= IXGBE_FLAG_DCB_ENABLED; 9738 9739 if (adapter->hw.mac.type == ixgbe_mac_82598EB) { 9740 adapter->last_lfc_mode = adapter->hw.fc.requested_mode; 9741 adapter->hw.fc.requested_mode = ixgbe_fc_none; 9742 } 9743 } else { 9744 netdev_reset_tc(dev); 9745 9746 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 9747 adapter->hw.fc.requested_mode = adapter->last_lfc_mode; 9748 9749 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; 9750 adapter->hw_tcs = tc; 9751 9752 adapter->temp_dcb_cfg.pfc_mode_enable = false; 9753 adapter->dcb_cfg.pfc_mode_enable = false; 9754 } 9755 9756 ixgbe_validate_rtr(adapter, tc); 9757 9758 #endif /* CONFIG_IXGBE_DCB */ 9759 ixgbe_init_interrupt_scheme(adapter); 9760 9761 ixgbe_defrag_macvlan_pools(dev); 9762 9763 if (netif_running(dev)) 9764 return ixgbe_open(dev); 9765 9766 return 0; 9767 } 9768 9769 static int ixgbe_delete_clsu32(struct ixgbe_adapter *adapter, 9770 struct tc_cls_u32_offload *cls) 9771 { 9772 u32 hdl = cls->knode.handle; 9773 u32 uhtid = TC_U32_USERHTID(cls->knode.handle); 9774 u32 loc = cls->knode.handle & 0xfffff; 9775 int err = 0, i, j; 9776 struct ixgbe_jump_table *jump = NULL; 9777 9778 if (loc > IXGBE_MAX_HW_ENTRIES) 9779 return -EINVAL; 9780 9781 if ((uhtid != 0x800) && (uhtid >= IXGBE_MAX_LINK_HANDLE)) 9782 return -EINVAL; 9783 9784 /* Clear this filter in the link data it is associated with */ 9785 if (uhtid != 0x800) { 9786 jump = adapter->jump_tables[uhtid]; 9787 if (!jump) 9788 return -EINVAL; 9789 if (!test_bit(loc - 1, jump->child_loc_map)) 9790 return -EINVAL; 9791 clear_bit(loc - 1, jump->child_loc_map); 9792 } 9793 9794 /* Check if the filter being deleted is a link */ 9795 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { 9796 jump = adapter->jump_tables[i]; 9797 if (jump && jump->link_hdl == hdl) { 9798 /* Delete filters in the hardware in the child hash 9799 * table associated with this link 9800 */ 9801 for (j = 0; j < IXGBE_MAX_HW_ENTRIES; j++) { 9802 if (!test_bit(j, jump->child_loc_map)) 9803 continue; 9804 spin_lock(&adapter->fdir_perfect_lock); 9805 err = ixgbe_update_ethtool_fdir_entry(adapter, 9806 NULL, 9807 j + 1); 9808 spin_unlock(&adapter->fdir_perfect_lock); 9809 clear_bit(j, jump->child_loc_map); 9810 } 9811 /* Remove resources for this link */ 9812 kfree(jump->input); 9813 kfree(jump->mask); 9814 kfree(jump); 9815 adapter->jump_tables[i] = NULL; 9816 return err; 9817 } 9818 } 9819 9820 spin_lock(&adapter->fdir_perfect_lock); 9821 err = ixgbe_update_ethtool_fdir_entry(adapter, NULL, loc); 9822 spin_unlock(&adapter->fdir_perfect_lock); 9823 return err; 9824 } 9825 9826 static int ixgbe_configure_clsu32_add_hnode(struct ixgbe_adapter *adapter, 9827 struct tc_cls_u32_offload *cls) 9828 { 9829 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); 9830 9831 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 9832 return -EINVAL; 9833 9834 /* This ixgbe devices do not support hash tables at the moment 9835 * so abort when given hash tables. 9836 */ 9837 if (cls->hnode.divisor > 0) 9838 return -EINVAL; 9839 9840 set_bit(uhtid - 1, &adapter->tables); 9841 return 0; 9842 } 9843 9844 static int ixgbe_configure_clsu32_del_hnode(struct ixgbe_adapter *adapter, 9845 struct tc_cls_u32_offload *cls) 9846 { 9847 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); 9848 9849 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 9850 return -EINVAL; 9851 9852 clear_bit(uhtid - 1, &adapter->tables); 9853 return 0; 9854 } 9855 9856 #ifdef CONFIG_NET_CLS_ACT 9857 struct upper_walk_data { 9858 struct ixgbe_adapter *adapter; 9859 u64 action; 9860 int ifindex; 9861 u8 queue; 9862 }; 9863 9864 static int get_macvlan_queue(struct net_device *upper, 9865 struct netdev_nested_priv *priv) 9866 { 9867 if (netif_is_macvlan(upper)) { 9868 struct ixgbe_fwd_adapter *vadapter = macvlan_accel_priv(upper); 9869 struct ixgbe_adapter *adapter; 9870 struct upper_walk_data *data; 9871 int ifindex; 9872 9873 data = (struct upper_walk_data *)priv->data; 9874 ifindex = data->ifindex; 9875 adapter = data->adapter; 9876 if (vadapter && upper->ifindex == ifindex) { 9877 data->queue = adapter->rx_ring[vadapter->rx_base_queue]->reg_idx; 9878 data->action = data->queue; 9879 return 1; 9880 } 9881 } 9882 9883 return 0; 9884 } 9885 9886 static int handle_redirect_action(struct ixgbe_adapter *adapter, int ifindex, 9887 u8 *queue, u64 *action) 9888 { 9889 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 9890 unsigned int num_vfs = adapter->num_vfs, vf; 9891 struct netdev_nested_priv priv; 9892 struct upper_walk_data data; 9893 struct net_device *upper; 9894 9895 /* redirect to a SRIOV VF */ 9896 for (vf = 0; vf < num_vfs; ++vf) { 9897 upper = pci_get_drvdata(adapter->vfinfo[vf].vfdev); 9898 if (upper->ifindex == ifindex) { 9899 *queue = vf * __ALIGN_MASK(1, ~vmdq->mask); 9900 *action = vf + 1; 9901 *action <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF; 9902 return 0; 9903 } 9904 } 9905 9906 /* redirect to a offloaded macvlan netdev */ 9907 data.adapter = adapter; 9908 data.ifindex = ifindex; 9909 data.action = 0; 9910 data.queue = 0; 9911 priv.data = (void *)&data; 9912 if (netdev_walk_all_upper_dev_rcu(adapter->netdev, 9913 get_macvlan_queue, &priv)) { 9914 *action = data.action; 9915 *queue = data.queue; 9916 9917 return 0; 9918 } 9919 9920 return -EINVAL; 9921 } 9922 9923 static int parse_tc_actions(struct ixgbe_adapter *adapter, 9924 struct tcf_exts *exts, u64 *action, u8 *queue) 9925 { 9926 const struct tc_action *a; 9927 int i; 9928 9929 if (!tcf_exts_has_actions(exts)) 9930 return -EINVAL; 9931 9932 tcf_exts_for_each_action(i, a, exts) { 9933 /* Drop action */ 9934 if (is_tcf_gact_shot(a)) { 9935 *action = IXGBE_FDIR_DROP_QUEUE; 9936 *queue = IXGBE_FDIR_DROP_QUEUE; 9937 return 0; 9938 } 9939 9940 /* Redirect to a VF or a offloaded macvlan */ 9941 if (is_tcf_mirred_egress_redirect(a)) { 9942 struct net_device *dev = tcf_mirred_dev(a); 9943 9944 if (!dev) 9945 return -EINVAL; 9946 return handle_redirect_action(adapter, dev->ifindex, 9947 queue, action); 9948 } 9949 9950 return -EINVAL; 9951 } 9952 9953 return -EINVAL; 9954 } 9955 #else 9956 static int parse_tc_actions(struct ixgbe_adapter *adapter, 9957 struct tcf_exts *exts, u64 *action, u8 *queue) 9958 { 9959 return -EINVAL; 9960 } 9961 #endif /* CONFIG_NET_CLS_ACT */ 9962 9963 static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter *input, 9964 union ixgbe_atr_input *mask, 9965 struct tc_cls_u32_offload *cls, 9966 struct ixgbe_mat_field *field_ptr, 9967 struct ixgbe_nexthdr *nexthdr) 9968 { 9969 int i, j, off; 9970 __be32 val, m; 9971 bool found_entry = false, found_jump_field = false; 9972 9973 for (i = 0; i < cls->knode.sel->nkeys; i++) { 9974 off = cls->knode.sel->keys[i].off; 9975 val = cls->knode.sel->keys[i].val; 9976 m = cls->knode.sel->keys[i].mask; 9977 9978 for (j = 0; field_ptr[j].val; j++) { 9979 if (field_ptr[j].off == off) { 9980 field_ptr[j].val(input, mask, (__force u32)val, 9981 (__force u32)m); 9982 input->filter.formatted.flow_type |= 9983 field_ptr[j].type; 9984 found_entry = true; 9985 break; 9986 } 9987 } 9988 if (nexthdr) { 9989 if (nexthdr->off == cls->knode.sel->keys[i].off && 9990 nexthdr->val == 9991 (__force u32)cls->knode.sel->keys[i].val && 9992 nexthdr->mask == 9993 (__force u32)cls->knode.sel->keys[i].mask) 9994 found_jump_field = true; 9995 else 9996 continue; 9997 } 9998 } 9999 10000 if (nexthdr && !found_jump_field) 10001 return -EINVAL; 10002 10003 if (!found_entry) 10004 return 0; 10005 10006 mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK | 10007 IXGBE_ATR_L4TYPE_MASK; 10008 10009 if (input->filter.formatted.flow_type == IXGBE_ATR_FLOW_TYPE_IPV4) 10010 mask->formatted.flow_type &= IXGBE_ATR_L4TYPE_IPV6_MASK; 10011 10012 return 0; 10013 } 10014 10015 static int ixgbe_configure_clsu32(struct ixgbe_adapter *adapter, 10016 struct tc_cls_u32_offload *cls) 10017 { 10018 __be16 protocol = cls->common.protocol; 10019 u32 loc = cls->knode.handle & 0xfffff; 10020 struct ixgbe_hw *hw = &adapter->hw; 10021 struct ixgbe_mat_field *field_ptr; 10022 struct ixgbe_fdir_filter *input = NULL; 10023 union ixgbe_atr_input *mask = NULL; 10024 struct ixgbe_jump_table *jump = NULL; 10025 int i, err = -EINVAL; 10026 u8 queue; 10027 u32 uhtid, link_uhtid; 10028 10029 uhtid = TC_U32_USERHTID(cls->knode.handle); 10030 link_uhtid = TC_U32_USERHTID(cls->knode.link_handle); 10031 10032 /* At the moment cls_u32 jumps to network layer and skips past 10033 * L2 headers. The canonical method to match L2 frames is to use 10034 * negative values. However this is error prone at best but really 10035 * just broken because there is no way to "know" what sort of hdr 10036 * is in front of the network layer. Fix cls_u32 to support L2 10037 * headers when needed. 10038 */ 10039 if (protocol != htons(ETH_P_IP)) 10040 return err; 10041 10042 if (loc >= ((1024 << adapter->fdir_pballoc) - 2)) { 10043 e_err(drv, "Location out of range\n"); 10044 return err; 10045 } 10046 10047 /* cls u32 is a graph starting at root node 0x800. The driver tracks 10048 * links and also the fields used to advance the parser across each 10049 * link (e.g. nexthdr/eat parameters from 'tc'). This way we can map 10050 * the u32 graph onto the hardware parse graph denoted in ixgbe_model.h 10051 * To add support for new nodes update ixgbe_model.h parse structures 10052 * this function _should_ be generic try not to hardcode values here. 10053 */ 10054 if (uhtid == 0x800) { 10055 field_ptr = (adapter->jump_tables[0])->mat; 10056 } else { 10057 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 10058 return err; 10059 if (!adapter->jump_tables[uhtid]) 10060 return err; 10061 field_ptr = (adapter->jump_tables[uhtid])->mat; 10062 } 10063 10064 if (!field_ptr) 10065 return err; 10066 10067 /* At this point we know the field_ptr is valid and need to either 10068 * build cls_u32 link or attach filter. Because adding a link to 10069 * a handle that does not exist is invalid and the same for adding 10070 * rules to handles that don't exist. 10071 */ 10072 10073 if (link_uhtid) { 10074 struct ixgbe_nexthdr *nexthdr = ixgbe_ipv4_jumps; 10075 10076 if (link_uhtid >= IXGBE_MAX_LINK_HANDLE) 10077 return err; 10078 10079 if (!test_bit(link_uhtid - 1, &adapter->tables)) 10080 return err; 10081 10082 /* Multiple filters as links to the same hash table are not 10083 * supported. To add a new filter with the same next header 10084 * but different match/jump conditions, create a new hash table 10085 * and link to it. 10086 */ 10087 if (adapter->jump_tables[link_uhtid] && 10088 (adapter->jump_tables[link_uhtid])->link_hdl) { 10089 e_err(drv, "Link filter exists for link: %x\n", 10090 link_uhtid); 10091 return err; 10092 } 10093 10094 for (i = 0; nexthdr[i].jump; i++) { 10095 if (nexthdr[i].o != cls->knode.sel->offoff || 10096 nexthdr[i].s != cls->knode.sel->offshift || 10097 nexthdr[i].m != 10098 (__force u32)cls->knode.sel->offmask) 10099 return err; 10100 10101 jump = kzalloc(sizeof(*jump), GFP_KERNEL); 10102 if (!jump) 10103 return -ENOMEM; 10104 input = kzalloc(sizeof(*input), GFP_KERNEL); 10105 if (!input) { 10106 err = -ENOMEM; 10107 goto free_jump; 10108 } 10109 mask = kzalloc(sizeof(*mask), GFP_KERNEL); 10110 if (!mask) { 10111 err = -ENOMEM; 10112 goto free_input; 10113 } 10114 jump->input = input; 10115 jump->mask = mask; 10116 jump->link_hdl = cls->knode.handle; 10117 10118 err = ixgbe_clsu32_build_input(input, mask, cls, 10119 field_ptr, &nexthdr[i]); 10120 if (!err) { 10121 jump->mat = nexthdr[i].jump; 10122 adapter->jump_tables[link_uhtid] = jump; 10123 break; 10124 } else { 10125 kfree(mask); 10126 kfree(input); 10127 kfree(jump); 10128 } 10129 } 10130 return 0; 10131 } 10132 10133 input = kzalloc(sizeof(*input), GFP_KERNEL); 10134 if (!input) 10135 return -ENOMEM; 10136 mask = kzalloc(sizeof(*mask), GFP_KERNEL); 10137 if (!mask) { 10138 err = -ENOMEM; 10139 goto free_input; 10140 } 10141 10142 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) { 10143 if ((adapter->jump_tables[uhtid])->input) 10144 memcpy(input, (adapter->jump_tables[uhtid])->input, 10145 sizeof(*input)); 10146 if ((adapter->jump_tables[uhtid])->mask) 10147 memcpy(mask, (adapter->jump_tables[uhtid])->mask, 10148 sizeof(*mask)); 10149 10150 /* Lookup in all child hash tables if this location is already 10151 * filled with a filter 10152 */ 10153 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { 10154 struct ixgbe_jump_table *link = adapter->jump_tables[i]; 10155 10156 if (link && (test_bit(loc - 1, link->child_loc_map))) { 10157 e_err(drv, "Filter exists in location: %x\n", 10158 loc); 10159 err = -EINVAL; 10160 goto err_out; 10161 } 10162 } 10163 } 10164 err = ixgbe_clsu32_build_input(input, mask, cls, field_ptr, NULL); 10165 if (err) 10166 goto err_out; 10167 10168 err = parse_tc_actions(adapter, cls->knode.exts, &input->action, 10169 &queue); 10170 if (err < 0) 10171 goto err_out; 10172 10173 input->sw_idx = loc; 10174 10175 spin_lock(&adapter->fdir_perfect_lock); 10176 10177 if (hlist_empty(&adapter->fdir_filter_list)) { 10178 memcpy(&adapter->fdir_mask, mask, sizeof(*mask)); 10179 err = ixgbe_fdir_set_input_mask_82599(hw, mask); 10180 if (err) 10181 goto err_out_w_lock; 10182 } else if (memcmp(&adapter->fdir_mask, mask, sizeof(*mask))) { 10183 err = -EINVAL; 10184 goto err_out_w_lock; 10185 } 10186 10187 ixgbe_atr_compute_perfect_hash_82599(&input->filter, mask); 10188 err = ixgbe_fdir_write_perfect_filter_82599(hw, &input->filter, 10189 input->sw_idx, queue); 10190 if (err) 10191 goto err_out_w_lock; 10192 10193 ixgbe_update_ethtool_fdir_entry(adapter, input, input->sw_idx); 10194 spin_unlock(&adapter->fdir_perfect_lock); 10195 10196 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) 10197 set_bit(loc - 1, (adapter->jump_tables[uhtid])->child_loc_map); 10198 10199 kfree(mask); 10200 return err; 10201 err_out_w_lock: 10202 spin_unlock(&adapter->fdir_perfect_lock); 10203 err_out: 10204 kfree(mask); 10205 free_input: 10206 kfree(input); 10207 free_jump: 10208 kfree(jump); 10209 return err; 10210 } 10211 10212 static int ixgbe_setup_tc_cls_u32(struct ixgbe_adapter *adapter, 10213 struct tc_cls_u32_offload *cls_u32) 10214 { 10215 switch (cls_u32->command) { 10216 case TC_CLSU32_NEW_KNODE: 10217 case TC_CLSU32_REPLACE_KNODE: 10218 return ixgbe_configure_clsu32(adapter, cls_u32); 10219 case TC_CLSU32_DELETE_KNODE: 10220 return ixgbe_delete_clsu32(adapter, cls_u32); 10221 case TC_CLSU32_NEW_HNODE: 10222 case TC_CLSU32_REPLACE_HNODE: 10223 return ixgbe_configure_clsu32_add_hnode(adapter, cls_u32); 10224 case TC_CLSU32_DELETE_HNODE: 10225 return ixgbe_configure_clsu32_del_hnode(adapter, cls_u32); 10226 default: 10227 return -EOPNOTSUPP; 10228 } 10229 } 10230 10231 static int ixgbe_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 10232 void *cb_priv) 10233 { 10234 struct ixgbe_adapter *adapter = cb_priv; 10235 10236 if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) 10237 return -EOPNOTSUPP; 10238 10239 switch (type) { 10240 case TC_SETUP_CLSU32: 10241 return ixgbe_setup_tc_cls_u32(adapter, type_data); 10242 default: 10243 return -EOPNOTSUPP; 10244 } 10245 } 10246 10247 static int ixgbe_setup_tc_mqprio(struct net_device *dev, 10248 struct tc_mqprio_qopt *mqprio) 10249 { 10250 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; 10251 return ixgbe_setup_tc(dev, mqprio->num_tc); 10252 } 10253 10254 static LIST_HEAD(ixgbe_block_cb_list); 10255 10256 static int __ixgbe_setup_tc(struct net_device *dev, enum tc_setup_type type, 10257 void *type_data) 10258 { 10259 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10260 10261 switch (type) { 10262 case TC_SETUP_BLOCK: 10263 return flow_block_cb_setup_simple(type_data, 10264 &ixgbe_block_cb_list, 10265 ixgbe_setup_tc_block_cb, 10266 adapter, adapter, true); 10267 case TC_SETUP_QDISC_MQPRIO: 10268 return ixgbe_setup_tc_mqprio(dev, type_data); 10269 default: 10270 return -EOPNOTSUPP; 10271 } 10272 } 10273 10274 #ifdef CONFIG_PCI_IOV 10275 void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter) 10276 { 10277 struct net_device *netdev = adapter->netdev; 10278 10279 rtnl_lock(); 10280 ixgbe_setup_tc(netdev, adapter->hw_tcs); 10281 rtnl_unlock(); 10282 } 10283 10284 #endif 10285 void ixgbe_do_reset(struct net_device *netdev) 10286 { 10287 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 10288 10289 if (netif_running(netdev)) 10290 ixgbe_reinit_locked(adapter); 10291 else 10292 ixgbe_reset(adapter); 10293 } 10294 10295 static netdev_features_t ixgbe_fix_features(struct net_device *netdev, 10296 netdev_features_t features) 10297 { 10298 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 10299 10300 /* If Rx checksum is disabled, then RSC/LRO should also be disabled */ 10301 if (!(features & NETIF_F_RXCSUM)) 10302 features &= ~NETIF_F_LRO; 10303 10304 /* Turn off LRO if not RSC capable */ 10305 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)) 10306 features &= ~NETIF_F_LRO; 10307 10308 if (adapter->xdp_prog && (features & NETIF_F_LRO)) { 10309 e_dev_err("LRO is not supported with XDP\n"); 10310 features &= ~NETIF_F_LRO; 10311 } 10312 10313 return features; 10314 } 10315 10316 static void ixgbe_reset_l2fw_offload(struct ixgbe_adapter *adapter) 10317 { 10318 int rss = min_t(int, ixgbe_max_rss_indices(adapter), 10319 num_online_cpus()); 10320 10321 /* go back to full RSS if we're not running SR-IOV */ 10322 if (!adapter->ring_feature[RING_F_VMDQ].offset) 10323 adapter->flags &= ~(IXGBE_FLAG_VMDQ_ENABLED | 10324 IXGBE_FLAG_SRIOV_ENABLED); 10325 10326 adapter->ring_feature[RING_F_RSS].limit = rss; 10327 adapter->ring_feature[RING_F_VMDQ].limit = 1; 10328 10329 ixgbe_setup_tc(adapter->netdev, adapter->hw_tcs); 10330 } 10331 10332 static int ixgbe_set_features(struct net_device *netdev, 10333 netdev_features_t features) 10334 { 10335 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 10336 netdev_features_t changed = netdev->features ^ features; 10337 bool need_reset = false; 10338 10339 /* Make sure RSC matches LRO, reset if change */ 10340 if (!(features & NETIF_F_LRO)) { 10341 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 10342 need_reset = true; 10343 adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED; 10344 } else if ((adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) && 10345 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) { 10346 if (adapter->rx_itr_setting == 1 || 10347 adapter->rx_itr_setting > IXGBE_MIN_RSC_ITR) { 10348 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED; 10349 need_reset = true; 10350 } else if ((changed ^ features) & NETIF_F_LRO) { 10351 e_info(probe, "rx-usecs set too low, " 10352 "disabling RSC\n"); 10353 } 10354 } 10355 10356 /* 10357 * Check if Flow Director n-tuple support or hw_tc support was 10358 * enabled or disabled. If the state changed, we need to reset. 10359 */ 10360 if ((features & NETIF_F_NTUPLE) || (features & NETIF_F_HW_TC)) { 10361 /* turn off ATR, enable perfect filters and reset */ 10362 if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) 10363 need_reset = true; 10364 10365 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; 10366 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE; 10367 } else { 10368 /* turn off perfect filters, enable ATR and reset */ 10369 if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) 10370 need_reset = true; 10371 10372 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE; 10373 10374 /* We cannot enable ATR if SR-IOV is enabled */ 10375 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED || 10376 /* We cannot enable ATR if we have 2 or more tcs */ 10377 (adapter->hw_tcs > 1) || 10378 /* We cannot enable ATR if RSS is disabled */ 10379 (adapter->ring_feature[RING_F_RSS].limit <= 1) || 10380 /* A sample rate of 0 indicates ATR disabled */ 10381 (!adapter->atr_sample_rate)) 10382 ; /* do nothing not supported */ 10383 else /* otherwise supported and set the flag */ 10384 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE; 10385 } 10386 10387 if (changed & NETIF_F_RXALL) 10388 need_reset = true; 10389 10390 netdev->features = features; 10391 10392 if ((changed & NETIF_F_HW_L2FW_DOFFLOAD) && adapter->num_rx_pools > 1) 10393 ixgbe_reset_l2fw_offload(adapter); 10394 else if (need_reset) 10395 ixgbe_do_reset(netdev); 10396 else if (changed & (NETIF_F_HW_VLAN_CTAG_RX | 10397 NETIF_F_HW_VLAN_CTAG_FILTER)) 10398 ixgbe_set_rx_mode(netdev); 10399 10400 return 1; 10401 } 10402 10403 static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 10404 struct net_device *dev, 10405 const unsigned char *addr, u16 vid, 10406 u16 flags, bool *notified, 10407 struct netlink_ext_ack *extack) 10408 { 10409 /* guarantee we can provide a unique filter for the unicast address */ 10410 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) { 10411 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10412 u16 pool = VMDQ_P(0); 10413 10414 if (netdev_uc_count(dev) >= ixgbe_available_rars(adapter, pool)) 10415 return -ENOMEM; 10416 } 10417 10418 return ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, flags); 10419 } 10420 10421 /** 10422 * ixgbe_configure_bridge_mode - set various bridge modes 10423 * @adapter: the private structure 10424 * @mode: requested bridge mode 10425 * 10426 * Configure some settings require for various bridge modes. 10427 **/ 10428 static int ixgbe_configure_bridge_mode(struct ixgbe_adapter *adapter, 10429 __u16 mode) 10430 { 10431 struct ixgbe_hw *hw = &adapter->hw; 10432 unsigned int p, num_pools; 10433 u32 vmdctl; 10434 10435 switch (mode) { 10436 case BRIDGE_MODE_VEPA: 10437 /* disable Tx loopback, rely on switch hairpin mode */ 10438 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 0); 10439 10440 /* must enable Rx switching replication to allow multicast 10441 * packet reception on all VFs, and to enable source address 10442 * pruning. 10443 */ 10444 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); 10445 vmdctl |= IXGBE_VT_CTL_REPLEN; 10446 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); 10447 10448 /* enable Rx source address pruning. Note, this requires 10449 * replication to be enabled or else it does nothing. 10450 */ 10451 num_pools = adapter->num_vfs + adapter->num_rx_pools; 10452 for (p = 0; p < num_pools; p++) { 10453 if (hw->mac.ops.set_source_address_pruning) 10454 hw->mac.ops.set_source_address_pruning(hw, 10455 true, 10456 p); 10457 } 10458 break; 10459 case BRIDGE_MODE_VEB: 10460 /* enable Tx loopback for internal VF/PF communication */ 10461 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 10462 IXGBE_PFDTXGSWC_VT_LBEN); 10463 10464 /* disable Rx switching replication unless we have SR-IOV 10465 * virtual functions 10466 */ 10467 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); 10468 if (!adapter->num_vfs) 10469 vmdctl &= ~IXGBE_VT_CTL_REPLEN; 10470 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); 10471 10472 /* disable Rx source address pruning, since we don't expect to 10473 * be receiving external loopback of our transmitted frames. 10474 */ 10475 num_pools = adapter->num_vfs + adapter->num_rx_pools; 10476 for (p = 0; p < num_pools; p++) { 10477 if (hw->mac.ops.set_source_address_pruning) 10478 hw->mac.ops.set_source_address_pruning(hw, 10479 false, 10480 p); 10481 } 10482 break; 10483 default: 10484 return -EINVAL; 10485 } 10486 10487 adapter->bridge_mode = mode; 10488 10489 e_info(drv, "enabling bridge mode: %s\n", 10490 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB"); 10491 10492 return 0; 10493 } 10494 10495 static int ixgbe_ndo_bridge_setlink(struct net_device *dev, 10496 struct nlmsghdr *nlh, u16 flags, 10497 struct netlink_ext_ack *extack) 10498 { 10499 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10500 struct nlattr *attr, *br_spec; 10501 int rem; 10502 10503 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 10504 return -EOPNOTSUPP; 10505 10506 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 10507 if (!br_spec) 10508 return -EINVAL; 10509 10510 nla_for_each_nested_type(attr, IFLA_BRIDGE_MODE, br_spec, rem) { 10511 __u16 mode = nla_get_u16(attr); 10512 int status = ixgbe_configure_bridge_mode(adapter, mode); 10513 10514 if (status) 10515 return status; 10516 10517 break; 10518 } 10519 10520 return 0; 10521 } 10522 10523 static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, 10524 struct net_device *dev, 10525 u32 filter_mask, int nlflags) 10526 { 10527 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10528 10529 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 10530 return 0; 10531 10532 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, 10533 adapter->bridge_mode, 0, 0, nlflags, 10534 filter_mask, NULL); 10535 } 10536 10537 static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev) 10538 { 10539 struct ixgbe_adapter *adapter = ixgbe_from_netdev(pdev); 10540 struct ixgbe_fwd_adapter *accel; 10541 int tcs = adapter->hw_tcs ? : 1; 10542 int pool, err; 10543 10544 if (adapter->xdp_prog) { 10545 e_warn(probe, "L2FW offload is not supported with XDP\n"); 10546 return ERR_PTR(-EINVAL); 10547 } 10548 10549 /* The hardware supported by ixgbe only filters on the destination MAC 10550 * address. In order to avoid issues we only support offloading modes 10551 * where the hardware can actually provide the functionality. 10552 */ 10553 if (!macvlan_supports_dest_filter(vdev)) 10554 return ERR_PTR(-EMEDIUMTYPE); 10555 10556 /* We need to lock down the macvlan to be a single queue device so that 10557 * we can reuse the tc_to_txq field in the macvlan netdev to represent 10558 * the queue mapping to our netdev. 10559 */ 10560 if (netif_is_multiqueue(vdev)) 10561 return ERR_PTR(-ERANGE); 10562 10563 pool = find_first_zero_bit(adapter->fwd_bitmask, adapter->num_rx_pools); 10564 if (pool == adapter->num_rx_pools) { 10565 u16 used_pools = adapter->num_vfs + adapter->num_rx_pools; 10566 u16 reserved_pools; 10567 10568 if (((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && 10569 adapter->num_rx_pools >= (MAX_TX_QUEUES / tcs)) || 10570 adapter->num_rx_pools > IXGBE_MAX_MACVLANS) 10571 return ERR_PTR(-EBUSY); 10572 10573 /* Hardware has a limited number of available pools. Each VF, 10574 * and the PF require a pool. Check to ensure we don't 10575 * attempt to use more then the available number of pools. 10576 */ 10577 if (used_pools >= IXGBE_MAX_VF_FUNCTIONS) 10578 return ERR_PTR(-EBUSY); 10579 10580 /* Enable VMDq flag so device will be set in VM mode */ 10581 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED | 10582 IXGBE_FLAG_SRIOV_ENABLED; 10583 10584 /* Try to reserve as many queues per pool as possible, 10585 * we start with the configurations that support 4 queues 10586 * per pools, followed by 2, and then by just 1 per pool. 10587 */ 10588 if (used_pools < 32 && adapter->num_rx_pools < 16) 10589 reserved_pools = min_t(u16, 10590 32 - used_pools, 10591 16 - adapter->num_rx_pools); 10592 else if (adapter->num_rx_pools < 32) 10593 reserved_pools = min_t(u16, 10594 64 - used_pools, 10595 32 - adapter->num_rx_pools); 10596 else 10597 reserved_pools = 64 - used_pools; 10598 10599 10600 if (!reserved_pools) 10601 return ERR_PTR(-EBUSY); 10602 10603 adapter->ring_feature[RING_F_VMDQ].limit += reserved_pools; 10604 10605 /* Force reinit of ring allocation with VMDQ enabled */ 10606 err = ixgbe_setup_tc(pdev, adapter->hw_tcs); 10607 if (err) 10608 return ERR_PTR(err); 10609 10610 if (pool >= adapter->num_rx_pools) 10611 return ERR_PTR(-ENOMEM); 10612 } 10613 10614 accel = kzalloc(sizeof(*accel), GFP_KERNEL); 10615 if (!accel) 10616 return ERR_PTR(-ENOMEM); 10617 10618 set_bit(pool, adapter->fwd_bitmask); 10619 netdev_set_sb_channel(vdev, pool); 10620 accel->pool = pool; 10621 accel->netdev = vdev; 10622 10623 if (!netif_running(pdev)) 10624 return accel; 10625 10626 err = ixgbe_fwd_ring_up(adapter, accel); 10627 if (err) 10628 return ERR_PTR(err); 10629 10630 return accel; 10631 } 10632 10633 static void ixgbe_fwd_del(struct net_device *pdev, void *priv) 10634 { 10635 struct ixgbe_fwd_adapter *accel = priv; 10636 struct ixgbe_adapter *adapter = ixgbe_from_netdev(pdev); 10637 unsigned int rxbase = accel->rx_base_queue; 10638 unsigned int i; 10639 10640 /* delete unicast filter associated with offloaded interface */ 10641 ixgbe_del_mac_filter(adapter, accel->netdev->dev_addr, 10642 VMDQ_P(accel->pool)); 10643 10644 /* Allow remaining Rx packets to get flushed out of the 10645 * Rx FIFO before we drop the netdev for the ring. 10646 */ 10647 usleep_range(10000, 20000); 10648 10649 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) { 10650 struct ixgbe_ring *ring = adapter->rx_ring[rxbase + i]; 10651 struct ixgbe_q_vector *qv = ring->q_vector; 10652 10653 /* Make sure we aren't processing any packets and clear 10654 * netdev to shut down the ring. 10655 */ 10656 if (netif_running(adapter->netdev)) 10657 napi_synchronize(&qv->napi); 10658 ring->netdev = NULL; 10659 } 10660 10661 /* unbind the queues and drop the subordinate channel config */ 10662 netdev_unbind_sb_channel(pdev, accel->netdev); 10663 netdev_set_sb_channel(accel->netdev, 0); 10664 10665 clear_bit(accel->pool, adapter->fwd_bitmask); 10666 kfree(accel); 10667 } 10668 10669 #define IXGBE_MAX_MAC_HDR_LEN 127 10670 #define IXGBE_MAX_NETWORK_HDR_LEN 511 10671 10672 static netdev_features_t 10673 ixgbe_features_check(struct sk_buff *skb, struct net_device *dev, 10674 netdev_features_t features) 10675 { 10676 unsigned int network_hdr_len, mac_hdr_len; 10677 10678 /* Make certain the headers can be described by a context descriptor */ 10679 mac_hdr_len = skb_network_offset(skb); 10680 if (unlikely(mac_hdr_len > IXGBE_MAX_MAC_HDR_LEN)) 10681 return features & ~(NETIF_F_HW_CSUM | 10682 NETIF_F_SCTP_CRC | 10683 NETIF_F_GSO_UDP_L4 | 10684 NETIF_F_HW_VLAN_CTAG_TX | 10685 NETIF_F_TSO | 10686 NETIF_F_TSO6); 10687 10688 network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb); 10689 if (unlikely(network_hdr_len > IXGBE_MAX_NETWORK_HDR_LEN)) 10690 return features & ~(NETIF_F_HW_CSUM | 10691 NETIF_F_SCTP_CRC | 10692 NETIF_F_GSO_UDP_L4 | 10693 NETIF_F_TSO | 10694 NETIF_F_TSO6); 10695 10696 /* We can only support IPV4 TSO in tunnels if we can mangle the 10697 * inner IP ID field, so strip TSO if MANGLEID is not supported. 10698 * IPsec offoad sets skb->encapsulation but still can handle 10699 * the TSO, so it's the exception. 10700 */ 10701 if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) { 10702 #ifdef CONFIG_IXGBE_IPSEC 10703 if (!secpath_exists(skb)) 10704 #endif 10705 features &= ~NETIF_F_TSO; 10706 } 10707 10708 return features; 10709 } 10710 10711 static int ixgbe_xdp_setup(struct net_device *dev, struct bpf_prog *prog) 10712 { 10713 int i, frame_size = dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; 10714 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10715 struct bpf_prog *old_prog; 10716 bool need_reset; 10717 int num_queues; 10718 10719 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 10720 return -EINVAL; 10721 10722 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) 10723 return -EINVAL; 10724 10725 /* verify ixgbe ring attributes are sufficient for XDP */ 10726 for (i = 0; i < adapter->num_rx_queues; i++) { 10727 struct ixgbe_ring *ring = adapter->rx_ring[i]; 10728 10729 if (ring_is_rsc_enabled(ring)) 10730 return -EINVAL; 10731 10732 if (frame_size > ixgbe_rx_bufsz(ring)) 10733 return -EINVAL; 10734 } 10735 10736 /* if the number of cpus is much larger than the maximum of queues, 10737 * we should stop it and then return with ENOMEM like before. 10738 */ 10739 if (nr_cpu_ids > IXGBE_MAX_XDP_QS * 2) 10740 return -ENOMEM; 10741 10742 old_prog = xchg(&adapter->xdp_prog, prog); 10743 need_reset = (!!prog != !!old_prog); 10744 10745 /* If transitioning XDP modes reconfigure rings */ 10746 if (need_reset) { 10747 int err; 10748 10749 if (!prog) 10750 /* Wait until ndo_xsk_wakeup completes. */ 10751 synchronize_rcu(); 10752 err = ixgbe_setup_tc(dev, adapter->hw_tcs); 10753 10754 if (err) 10755 return -EINVAL; 10756 if (!prog) 10757 xdp_features_clear_redirect_target(dev); 10758 } else { 10759 for (i = 0; i < adapter->num_rx_queues; i++) { 10760 WRITE_ONCE(adapter->rx_ring[i]->xdp_prog, 10761 adapter->xdp_prog); 10762 } 10763 } 10764 10765 if (old_prog) 10766 bpf_prog_put(old_prog); 10767 10768 /* Kick start the NAPI context if there is an AF_XDP socket open 10769 * on that queue id. This so that receiving will start. 10770 */ 10771 if (need_reset && prog) { 10772 num_queues = min_t(int, adapter->num_rx_queues, 10773 adapter->num_xdp_queues); 10774 for (i = 0; i < num_queues; i++) 10775 if (adapter->xdp_ring[i]->xsk_pool) 10776 (void)ixgbe_xsk_wakeup(adapter->netdev, i, 10777 XDP_WAKEUP_RX); 10778 xdp_features_set_redirect_target(dev, true); 10779 } 10780 10781 return 0; 10782 } 10783 10784 static int ixgbe_xdp(struct net_device *dev, struct netdev_bpf *xdp) 10785 { 10786 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10787 10788 switch (xdp->command) { 10789 case XDP_SETUP_PROG: 10790 return ixgbe_xdp_setup(dev, xdp->prog); 10791 case XDP_SETUP_XSK_POOL: 10792 return ixgbe_xsk_pool_setup(adapter, xdp->xsk.pool, 10793 xdp->xsk.queue_id); 10794 10795 default: 10796 return -EINVAL; 10797 } 10798 } 10799 10800 void ixgbe_xdp_ring_update_tail(struct ixgbe_ring *ring) 10801 { 10802 /* Force memory writes to complete before letting h/w know there 10803 * are new descriptors to fetch. 10804 */ 10805 wmb(); 10806 writel(ring->next_to_use, ring->tail); 10807 } 10808 10809 void ixgbe_xdp_ring_update_tail_locked(struct ixgbe_ring *ring) 10810 { 10811 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10812 spin_lock(&ring->tx_lock); 10813 ixgbe_xdp_ring_update_tail(ring); 10814 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10815 spin_unlock(&ring->tx_lock); 10816 } 10817 10818 static int ixgbe_xdp_xmit(struct net_device *dev, int n, 10819 struct xdp_frame **frames, u32 flags) 10820 { 10821 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10822 struct ixgbe_ring *ring; 10823 int nxmit = 0; 10824 int i; 10825 10826 if (unlikely(test_bit(__IXGBE_DOWN, &adapter->state))) 10827 return -ENETDOWN; 10828 10829 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) 10830 return -EINVAL; 10831 10832 /* During program transitions its possible adapter->xdp_prog is assigned 10833 * but ring has not been configured yet. In this case simply abort xmit. 10834 */ 10835 ring = adapter->xdp_prog ? ixgbe_determine_xdp_ring(adapter) : NULL; 10836 if (unlikely(!ring)) 10837 return -ENXIO; 10838 10839 if (unlikely(test_bit(__IXGBE_TX_DISABLED, &ring->state))) 10840 return -ENXIO; 10841 10842 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10843 spin_lock(&ring->tx_lock); 10844 10845 for (i = 0; i < n; i++) { 10846 struct xdp_frame *xdpf = frames[i]; 10847 int err; 10848 10849 err = ixgbe_xmit_xdp_ring(ring, xdpf); 10850 if (err != IXGBE_XDP_TX) 10851 break; 10852 nxmit++; 10853 } 10854 10855 if (unlikely(flags & XDP_XMIT_FLUSH)) 10856 ixgbe_xdp_ring_update_tail(ring); 10857 10858 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10859 spin_unlock(&ring->tx_lock); 10860 10861 return nxmit; 10862 } 10863 10864 static const struct net_device_ops ixgbe_netdev_ops = { 10865 .ndo_open = ixgbe_open, 10866 .ndo_stop = ixgbe_close, 10867 .ndo_start_xmit = ixgbe_xmit_frame, 10868 .ndo_set_rx_mode = ixgbe_set_rx_mode, 10869 .ndo_validate_addr = eth_validate_addr, 10870 .ndo_set_mac_address = ixgbe_set_mac, 10871 .ndo_change_mtu = ixgbe_change_mtu, 10872 .ndo_tx_timeout = ixgbe_tx_timeout, 10873 .ndo_set_tx_maxrate = ixgbe_tx_maxrate, 10874 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid, 10875 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid, 10876 .ndo_eth_ioctl = ixgbe_ioctl, 10877 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac, 10878 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan, 10879 .ndo_set_vf_rate = ixgbe_ndo_set_vf_bw, 10880 .ndo_set_vf_spoofchk = ixgbe_ndo_set_vf_spoofchk, 10881 .ndo_set_vf_link_state = ixgbe_ndo_set_vf_link_state, 10882 .ndo_set_vf_rss_query_en = ixgbe_ndo_set_vf_rss_query_en, 10883 .ndo_set_vf_trust = ixgbe_ndo_set_vf_trust, 10884 .ndo_get_vf_config = ixgbe_ndo_get_vf_config, 10885 .ndo_get_vf_stats = ixgbe_ndo_get_vf_stats, 10886 .ndo_get_stats64 = ixgbe_get_stats64, 10887 .ndo_setup_tc = __ixgbe_setup_tc, 10888 #ifdef IXGBE_FCOE 10889 .ndo_select_queue = ixgbe_select_queue, 10890 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get, 10891 .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target, 10892 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put, 10893 .ndo_fcoe_enable = ixgbe_fcoe_enable, 10894 .ndo_fcoe_disable = ixgbe_fcoe_disable, 10895 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn, 10896 .ndo_fcoe_get_hbainfo = ixgbe_fcoe_get_hbainfo, 10897 #endif /* IXGBE_FCOE */ 10898 .ndo_set_features = ixgbe_set_features, 10899 .ndo_fix_features = ixgbe_fix_features, 10900 .ndo_fdb_add = ixgbe_ndo_fdb_add, 10901 .ndo_bridge_setlink = ixgbe_ndo_bridge_setlink, 10902 .ndo_bridge_getlink = ixgbe_ndo_bridge_getlink, 10903 .ndo_dfwd_add_station = ixgbe_fwd_add, 10904 .ndo_dfwd_del_station = ixgbe_fwd_del, 10905 .ndo_features_check = ixgbe_features_check, 10906 .ndo_bpf = ixgbe_xdp, 10907 .ndo_xdp_xmit = ixgbe_xdp_xmit, 10908 .ndo_xsk_wakeup = ixgbe_xsk_wakeup, 10909 }; 10910 10911 static void ixgbe_disable_txr_hw(struct ixgbe_adapter *adapter, 10912 struct ixgbe_ring *tx_ring) 10913 { 10914 unsigned long wait_delay, delay_interval; 10915 struct ixgbe_hw *hw = &adapter->hw; 10916 u8 reg_idx = tx_ring->reg_idx; 10917 int wait_loop; 10918 u32 txdctl; 10919 10920 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 10921 10922 /* delay mechanism from ixgbe_disable_tx */ 10923 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 10924 10925 wait_loop = IXGBE_MAX_RX_DESC_POLL; 10926 wait_delay = delay_interval; 10927 10928 while (wait_loop--) { 10929 usleep_range(wait_delay, wait_delay + 10); 10930 wait_delay += delay_interval * 2; 10931 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 10932 10933 if (!(txdctl & IXGBE_TXDCTL_ENABLE)) 10934 return; 10935 } 10936 10937 e_err(drv, "TXDCTL.ENABLE not cleared within the polling period\n"); 10938 } 10939 10940 static void ixgbe_disable_txr(struct ixgbe_adapter *adapter, 10941 struct ixgbe_ring *tx_ring) 10942 { 10943 set_bit(__IXGBE_TX_DISABLED, &tx_ring->state); 10944 ixgbe_disable_txr_hw(adapter, tx_ring); 10945 } 10946 10947 static void ixgbe_disable_rxr_hw(struct ixgbe_adapter *adapter, 10948 struct ixgbe_ring *rx_ring) 10949 { 10950 unsigned long wait_delay, delay_interval; 10951 struct ixgbe_hw *hw = &adapter->hw; 10952 u8 reg_idx = rx_ring->reg_idx; 10953 int wait_loop; 10954 u32 rxdctl; 10955 10956 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 10957 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 10958 rxdctl |= IXGBE_RXDCTL_SWFLSH; 10959 10960 /* write value back with RXDCTL.ENABLE bit cleared */ 10961 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 10962 10963 /* RXDCTL.EN may not change on 82598 if link is down, so skip it */ 10964 if (hw->mac.type == ixgbe_mac_82598EB && 10965 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 10966 return; 10967 10968 /* delay mechanism from ixgbe_disable_rx */ 10969 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 10970 10971 wait_loop = IXGBE_MAX_RX_DESC_POLL; 10972 wait_delay = delay_interval; 10973 10974 while (wait_loop--) { 10975 usleep_range(wait_delay, wait_delay + 10); 10976 wait_delay += delay_interval * 2; 10977 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 10978 10979 if (!(rxdctl & IXGBE_RXDCTL_ENABLE)) 10980 return; 10981 } 10982 10983 e_err(drv, "RXDCTL.ENABLE not cleared within the polling period\n"); 10984 } 10985 10986 static void ixgbe_reset_txr_stats(struct ixgbe_ring *tx_ring) 10987 { 10988 memset(&tx_ring->stats, 0, sizeof(tx_ring->stats)); 10989 memset(&tx_ring->tx_stats, 0, sizeof(tx_ring->tx_stats)); 10990 } 10991 10992 static void ixgbe_reset_rxr_stats(struct ixgbe_ring *rx_ring) 10993 { 10994 memset(&rx_ring->stats, 0, sizeof(rx_ring->stats)); 10995 memset(&rx_ring->rx_stats, 0, sizeof(rx_ring->rx_stats)); 10996 } 10997 10998 /** 10999 * ixgbe_irq_disable_single - Disable single IRQ vector 11000 * @adapter: adapter structure 11001 * @ring: ring index 11002 **/ 11003 static void ixgbe_irq_disable_single(struct ixgbe_adapter *adapter, u32 ring) 11004 { 11005 struct ixgbe_hw *hw = &adapter->hw; 11006 u64 qmask = BIT_ULL(ring); 11007 u32 mask; 11008 11009 switch (adapter->hw.mac.type) { 11010 case ixgbe_mac_82598EB: 11011 mask = qmask & IXGBE_EIMC_RTX_QUEUE; 11012 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, mask); 11013 break; 11014 case ixgbe_mac_82599EB: 11015 case ixgbe_mac_X540: 11016 case ixgbe_mac_X550: 11017 case ixgbe_mac_X550EM_x: 11018 case ixgbe_mac_x550em_a: 11019 mask = (qmask & 0xFFFFFFFF); 11020 if (mask) 11021 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask); 11022 mask = (qmask >> 32); 11023 if (mask) 11024 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask); 11025 break; 11026 default: 11027 break; 11028 } 11029 IXGBE_WRITE_FLUSH(&adapter->hw); 11030 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) 11031 synchronize_irq(adapter->msix_entries[ring].vector); 11032 else 11033 synchronize_irq(adapter->pdev->irq); 11034 } 11035 11036 /** 11037 * ixgbe_txrx_ring_disable - Disable Rx/Tx/XDP Tx rings 11038 * @adapter: adapter structure 11039 * @ring: ring index 11040 * 11041 * This function disables a certain Rx/Tx/XDP Tx ring. The function 11042 * assumes that the netdev is running. 11043 **/ 11044 void ixgbe_txrx_ring_disable(struct ixgbe_adapter *adapter, int ring) 11045 { 11046 struct ixgbe_ring *rx_ring, *tx_ring, *xdp_ring; 11047 11048 rx_ring = adapter->rx_ring[ring]; 11049 tx_ring = adapter->tx_ring[ring]; 11050 xdp_ring = adapter->xdp_ring[ring]; 11051 11052 ixgbe_irq_disable_single(adapter, ring); 11053 11054 /* Rx/Tx/XDP Tx share the same napi context. */ 11055 napi_disable(&rx_ring->q_vector->napi); 11056 11057 ixgbe_disable_txr(adapter, tx_ring); 11058 if (xdp_ring) 11059 ixgbe_disable_txr(adapter, xdp_ring); 11060 ixgbe_disable_rxr_hw(adapter, rx_ring); 11061 11062 if (xdp_ring) 11063 synchronize_rcu(); 11064 11065 ixgbe_clean_tx_ring(tx_ring); 11066 if (xdp_ring) 11067 ixgbe_clean_tx_ring(xdp_ring); 11068 ixgbe_clean_rx_ring(rx_ring); 11069 11070 ixgbe_reset_txr_stats(tx_ring); 11071 if (xdp_ring) 11072 ixgbe_reset_txr_stats(xdp_ring); 11073 ixgbe_reset_rxr_stats(rx_ring); 11074 } 11075 11076 /** 11077 * ixgbe_txrx_ring_enable - Enable Rx/Tx/XDP Tx rings 11078 * @adapter: adapter structure 11079 * @ring: ring index 11080 * 11081 * This function enables a certain Rx/Tx/XDP Tx ring. The function 11082 * assumes that the netdev is running. 11083 **/ 11084 void ixgbe_txrx_ring_enable(struct ixgbe_adapter *adapter, int ring) 11085 { 11086 struct ixgbe_ring *rx_ring, *tx_ring, *xdp_ring; 11087 11088 rx_ring = adapter->rx_ring[ring]; 11089 tx_ring = adapter->tx_ring[ring]; 11090 xdp_ring = adapter->xdp_ring[ring]; 11091 11092 ixgbe_configure_tx_ring(adapter, tx_ring); 11093 if (xdp_ring) 11094 ixgbe_configure_tx_ring(adapter, xdp_ring); 11095 ixgbe_configure_rx_ring(adapter, rx_ring); 11096 11097 clear_bit(__IXGBE_TX_DISABLED, &tx_ring->state); 11098 if (xdp_ring) 11099 clear_bit(__IXGBE_TX_DISABLED, &xdp_ring->state); 11100 11101 /* Rx/Tx/XDP Tx share the same napi context. */ 11102 napi_enable(&rx_ring->q_vector->napi); 11103 ixgbe_irq_enable_queues(adapter, BIT_ULL(ring)); 11104 IXGBE_WRITE_FLUSH(&adapter->hw); 11105 } 11106 11107 /** 11108 * ixgbe_enumerate_functions - Get the number of ports this device has 11109 * @adapter: adapter structure 11110 * 11111 * This function enumerates the phsyical functions co-located on a single slot, 11112 * in order to determine how many ports a device has. This is most useful in 11113 * determining the required GT/s of PCIe bandwidth necessary for optimal 11114 * performance. 11115 **/ 11116 static inline int ixgbe_enumerate_functions(struct ixgbe_adapter *adapter) 11117 { 11118 struct pci_dev *entry, *pdev = adapter->pdev; 11119 int physfns = 0; 11120 11121 /* Some cards can not use the generic count PCIe functions method, 11122 * because they are behind a parent switch, so we hardcode these with 11123 * the correct number of functions. 11124 */ 11125 if (ixgbe_pcie_from_parent(&adapter->hw)) 11126 physfns = 4; 11127 11128 list_for_each_entry(entry, &adapter->pdev->bus->devices, bus_list) { 11129 /* don't count virtual functions */ 11130 if (entry->is_virtfn) 11131 continue; 11132 11133 /* When the devices on the bus don't all match our device ID, 11134 * we can't reliably determine the correct number of 11135 * functions. This can occur if a function has been direct 11136 * attached to a virtual machine using VT-d, for example. In 11137 * this case, simply return -1 to indicate this. 11138 */ 11139 if ((entry->vendor != pdev->vendor) || 11140 (entry->device != pdev->device)) 11141 return -1; 11142 11143 physfns++; 11144 } 11145 11146 return physfns; 11147 } 11148 11149 /** 11150 * ixgbe_wol_supported - Check whether device supports WoL 11151 * @adapter: the adapter private structure 11152 * @device_id: the device ID 11153 * @subdevice_id: the subsystem device ID 11154 * 11155 * This function is used by probe and ethtool to determine 11156 * which devices have WoL support 11157 * 11158 **/ 11159 bool ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id, 11160 u16 subdevice_id) 11161 { 11162 struct ixgbe_hw *hw = &adapter->hw; 11163 u16 wol_cap = adapter->eeprom_cap & IXGBE_DEVICE_CAPS_WOL_MASK; 11164 11165 /* WOL not supported on 82598 */ 11166 if (hw->mac.type == ixgbe_mac_82598EB) 11167 return false; 11168 11169 /* check eeprom to see if WOL is enabled for X540 and newer */ 11170 if (hw->mac.type >= ixgbe_mac_X540) { 11171 if ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0_1) || 11172 ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0) && 11173 (hw->bus.func == 0))) 11174 return true; 11175 } 11176 11177 /* WOL is determined based on device IDs for 82599 MACs */ 11178 switch (device_id) { 11179 case IXGBE_DEV_ID_82599_SFP: 11180 /* Only these subdevices could supports WOL */ 11181 switch (subdevice_id) { 11182 case IXGBE_SUBDEV_ID_82599_560FLR: 11183 case IXGBE_SUBDEV_ID_82599_LOM_SNAP6: 11184 case IXGBE_SUBDEV_ID_82599_SFP_WOL0: 11185 case IXGBE_SUBDEV_ID_82599_SFP_2OCP: 11186 /* only support first port */ 11187 if (hw->bus.func != 0) 11188 break; 11189 fallthrough; 11190 case IXGBE_SUBDEV_ID_82599_SP_560FLR: 11191 case IXGBE_SUBDEV_ID_82599_SFP: 11192 case IXGBE_SUBDEV_ID_82599_RNDC: 11193 case IXGBE_SUBDEV_ID_82599_ECNA_DP: 11194 case IXGBE_SUBDEV_ID_82599_SFP_1OCP: 11195 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM1: 11196 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM2: 11197 return true; 11198 } 11199 break; 11200 case IXGBE_DEV_ID_82599EN_SFP: 11201 /* Only these subdevices support WOL */ 11202 switch (subdevice_id) { 11203 case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1: 11204 return true; 11205 } 11206 break; 11207 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE: 11208 /* All except this subdevice support WOL */ 11209 if (subdevice_id != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ) 11210 return true; 11211 break; 11212 case IXGBE_DEV_ID_82599_KX4: 11213 return true; 11214 default: 11215 break; 11216 } 11217 11218 return false; 11219 } 11220 11221 /** 11222 * ixgbe_set_fw_version_e610 - Set FW version specifically on E610 adapters 11223 * @adapter: the adapter private structure 11224 * 11225 * This function is used by probe and ethtool to determine the FW version to 11226 * format to display. The FW version is taken from the EEPROM/NVM. 11227 * 11228 */ 11229 void ixgbe_set_fw_version_e610(struct ixgbe_adapter *adapter) 11230 { 11231 struct ixgbe_orom_info *orom = &adapter->hw.flash.orom; 11232 struct ixgbe_nvm_info *nvm = &adapter->hw.flash.nvm; 11233 11234 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11235 "%x.%02x 0x%x %d.%d.%d", nvm->major, nvm->minor, 11236 nvm->eetrack, orom->major, orom->build, orom->patch); 11237 } 11238 11239 /** 11240 * ixgbe_set_fw_version - Set FW version 11241 * @adapter: the adapter private structure 11242 * 11243 * This function is used by probe and ethtool to determine the FW version to 11244 * format to display. The FW version is taken from the EEPROM/NVM. 11245 */ 11246 static void ixgbe_set_fw_version(struct ixgbe_adapter *adapter) 11247 { 11248 struct ixgbe_hw *hw = &adapter->hw; 11249 struct ixgbe_nvm_version nvm_ver; 11250 11251 if (adapter->hw.mac.type == ixgbe_mac_e610) { 11252 ixgbe_set_fw_version_e610(adapter); 11253 return; 11254 } 11255 11256 ixgbe_get_oem_prod_version(hw, &nvm_ver); 11257 if (nvm_ver.oem_valid) { 11258 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11259 "%x.%x.%x", nvm_ver.oem_major, nvm_ver.oem_minor, 11260 nvm_ver.oem_release); 11261 return; 11262 } 11263 11264 ixgbe_get_etk_id(hw, &nvm_ver); 11265 ixgbe_get_orom_version(hw, &nvm_ver); 11266 11267 if (nvm_ver.or_valid) { 11268 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11269 "0x%08x, %d.%d.%d", nvm_ver.etk_id, nvm_ver.or_major, 11270 nvm_ver.or_build, nvm_ver.or_patch); 11271 return; 11272 } 11273 11274 /* Set ETrack ID format */ 11275 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11276 "0x%08x", nvm_ver.etk_id); 11277 } 11278 11279 /** 11280 * ixgbe_recovery_probe - Handle FW recovery mode during probe 11281 * @adapter: the adapter private structure 11282 * 11283 * Perform limited driver initialization when FW error is detected. 11284 * 11285 * Return: 0 on successful probe for E610, -EIO if recovery mode is detected 11286 * for non-E610 adapter, error status code on any other case. 11287 */ 11288 static int ixgbe_recovery_probe(struct ixgbe_adapter *adapter) 11289 { 11290 struct net_device *netdev = adapter->netdev; 11291 struct pci_dev *pdev = adapter->pdev; 11292 struct ixgbe_hw *hw = &adapter->hw; 11293 bool disable_dev; 11294 int err = -EIO; 11295 11296 if (hw->mac.type != ixgbe_mac_e610) 11297 goto clean_up_probe; 11298 11299 ixgbe_get_hw_control(adapter); 11300 mutex_init(&hw->aci.lock); 11301 err = ixgbe_get_flash_data(&adapter->hw); 11302 if (err) 11303 goto shutdown_aci; 11304 11305 timer_setup(&adapter->service_timer, ixgbe_service_timer, 0); 11306 INIT_WORK(&adapter->service_task, ixgbe_recovery_service_task); 11307 set_bit(__IXGBE_SERVICE_INITED, &adapter->state); 11308 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 11309 11310 if (hw->mac.ops.get_bus_info) 11311 hw->mac.ops.get_bus_info(hw); 11312 11313 pci_set_drvdata(pdev, adapter); 11314 /* We are creating devlink interface so NIC can be managed, 11315 * e.g. new NVM image loaded 11316 */ 11317 devl_lock(adapter->devlink); 11318 ixgbe_devlink_register_port(adapter); 11319 SET_NETDEV_DEVLINK_PORT(adapter->netdev, 11320 &adapter->devlink_port); 11321 ixgbe_devlink_init_regions(adapter); 11322 devl_register(adapter->devlink); 11323 devl_unlock(adapter->devlink); 11324 11325 return 0; 11326 shutdown_aci: 11327 mutex_destroy(&adapter->hw.aci.lock); 11328 ixgbe_release_hw_control(adapter); 11329 devlink_free(adapter->devlink); 11330 clean_up_probe: 11331 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); 11332 free_netdev(netdev); 11333 pci_release_mem_regions(pdev); 11334 if (disable_dev) 11335 pci_disable_device(pdev); 11336 return err; 11337 } 11338 11339 /** 11340 * ixgbe_probe - Device Initialization Routine 11341 * @pdev: PCI device information struct 11342 * @ent: entry in ixgbe_pci_tbl 11343 * 11344 * Returns 0 on success, negative on failure 11345 * 11346 * ixgbe_probe initializes an adapter identified by a pci_dev structure. 11347 * The OS initialization, configuring of the adapter private structure, 11348 * and a hardware reset occur. 11349 **/ 11350 static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 11351 { 11352 struct net_device *netdev; 11353 struct ixgbe_netdevice_priv *netdev_priv_wrapper; 11354 struct ixgbe_adapter *adapter = NULL; 11355 struct ixgbe_hw *hw; 11356 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; 11357 unsigned int indices = MAX_TX_QUEUES; 11358 u8 part_str[IXGBE_PBANUM_LENGTH]; 11359 int i, err, expected_gts; 11360 bool disable_dev = false; 11361 #ifdef IXGBE_FCOE 11362 u16 device_caps; 11363 #endif 11364 u32 eec; 11365 11366 /* Catch broken hardware that put the wrong VF device ID in 11367 * the PCIe SR-IOV capability. 11368 */ 11369 if (pdev->is_virtfn) { 11370 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", 11371 pci_name(pdev), pdev->vendor, pdev->device); 11372 return -EINVAL; 11373 } 11374 11375 err = pci_enable_device_mem(pdev); 11376 if (err) 11377 return err; 11378 11379 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 11380 if (err) { 11381 dev_err(&pdev->dev, 11382 "No usable DMA configuration, aborting\n"); 11383 goto err_dma; 11384 } 11385 11386 err = pci_request_mem_regions(pdev, ixgbe_driver_name); 11387 if (err) { 11388 dev_err(&pdev->dev, 11389 "pci_request_selected_regions failed 0x%x\n", err); 11390 goto err_pci_reg; 11391 } 11392 11393 pci_set_master(pdev); 11394 pci_save_state(pdev); 11395 11396 if (ii->mac == ixgbe_mac_82598EB) { 11397 #ifdef CONFIG_IXGBE_DCB 11398 /* 8 TC w/ 4 queues per TC */ 11399 indices = 4 * MAX_TRAFFIC_CLASS; 11400 #else 11401 indices = IXGBE_MAX_RSS_INDICES; 11402 #endif 11403 } else if (ii->mac == ixgbe_mac_e610) { 11404 indices = IXGBE_MAX_RSS_INDICES_X550; 11405 } 11406 11407 adapter = ixgbe_allocate_devlink(&pdev->dev); 11408 if (IS_ERR(adapter)) { 11409 err = PTR_ERR(adapter); 11410 goto err_devlink; 11411 } 11412 11413 netdev = alloc_etherdev_mq(sizeof(*netdev_priv_wrapper), indices); 11414 if (!netdev) { 11415 err = -ENOMEM; 11416 goto err_alloc_etherdev; 11417 } 11418 11419 SET_NETDEV_DEV(netdev, &pdev->dev); 11420 11421 netdev_priv_wrapper = netdev_priv(netdev); 11422 netdev_priv_wrapper->adapter = adapter; 11423 11424 adapter->netdev = netdev; 11425 adapter->pdev = pdev; 11426 hw = &adapter->hw; 11427 hw->back = adapter; 11428 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); 11429 11430 hw->hw_addr = ioremap(pci_resource_start(pdev, 0), 11431 pci_resource_len(pdev, 0)); 11432 adapter->io_addr = hw->hw_addr; 11433 if (!hw->hw_addr) { 11434 err = -EIO; 11435 goto err_ioremap; 11436 } 11437 11438 /* Setup hw api */ 11439 hw->mac.ops = *ii->mac_ops; 11440 hw->mac.type = ii->mac; 11441 hw->mvals = ii->mvals; 11442 if (ii->link_ops) 11443 hw->link.ops = *ii->link_ops; 11444 11445 /* EEPROM */ 11446 hw->eeprom.ops = *ii->eeprom_ops; 11447 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); 11448 if (ixgbe_removed(hw->hw_addr)) { 11449 err = -EIO; 11450 goto err_ioremap; 11451 } 11452 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */ 11453 if (!(eec & BIT(8))) 11454 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic; 11455 11456 /* PHY */ 11457 hw->phy.ops = *ii->phy_ops; 11458 hw->phy.sfp_type = ixgbe_sfp_type_unknown; 11459 /* ixgbe_identify_phy_generic will set prtad and mmds properly */ 11460 hw->phy.mdio.prtad = MDIO_PRTAD_NONE; 11461 hw->phy.mdio.mmds = 0; 11462 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 11463 hw->phy.mdio.dev = netdev; 11464 hw->phy.mdio.mdio_read = ixgbe_mdio_read; 11465 hw->phy.mdio.mdio_write = ixgbe_mdio_write; 11466 11467 netdev->netdev_ops = &ixgbe_netdev_ops; 11468 ixgbe_set_ethtool_ops(netdev); 11469 netdev->watchdog_timeo = 5 * HZ; 11470 strscpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); 11471 11472 /* setup the private structure */ 11473 err = ixgbe_sw_init(adapter, ii); 11474 if (err) 11475 goto err_sw_init; 11476 11477 /* Make sure the SWFW semaphore is in a valid state */ 11478 if (hw->mac.ops.init_swfw_sync) 11479 hw->mac.ops.init_swfw_sync(hw); 11480 11481 if (ixgbe_check_fw_error(adapter)) 11482 return ixgbe_recovery_probe(adapter); 11483 11484 if (adapter->hw.mac.type == ixgbe_mac_e610) { 11485 err = ixgbe_get_caps(&adapter->hw); 11486 if (err) 11487 dev_err(&pdev->dev, "ixgbe_get_caps failed %d\n", err); 11488 11489 err = ixgbe_get_flash_data(&adapter->hw); 11490 if (err) 11491 goto err_sw_init; 11492 } 11493 11494 if (adapter->hw.mac.type == ixgbe_mac_82599EB) 11495 adapter->flags2 |= IXGBE_FLAG2_AUTO_DISABLE_VF; 11496 11497 switch (adapter->hw.mac.type) { 11498 case ixgbe_mac_X550: 11499 case ixgbe_mac_X550EM_x: 11500 case ixgbe_mac_e610: 11501 netdev->udp_tunnel_nic_info = &ixgbe_udp_tunnels_x550; 11502 break; 11503 case ixgbe_mac_x550em_a: 11504 netdev->udp_tunnel_nic_info = &ixgbe_udp_tunnels_x550em_a; 11505 break; 11506 default: 11507 break; 11508 } 11509 11510 /* Make it possible the adapter to be woken up via WOL */ 11511 switch (adapter->hw.mac.type) { 11512 case ixgbe_mac_82599EB: 11513 case ixgbe_mac_X540: 11514 case ixgbe_mac_X550: 11515 case ixgbe_mac_X550EM_x: 11516 case ixgbe_mac_x550em_a: 11517 case ixgbe_mac_e610: 11518 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 11519 break; 11520 default: 11521 break; 11522 } 11523 11524 /* 11525 * If there is a fan on this device and it has failed log the 11526 * failure. 11527 */ 11528 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { 11529 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); 11530 if (esdp & IXGBE_ESDP_SDP1) 11531 e_crit(probe, "Fan has stopped, replace the adapter\n"); 11532 } 11533 11534 if (allow_unsupported_sfp) 11535 hw->allow_unsupported_sfp = allow_unsupported_sfp; 11536 11537 /* reset_hw fills in the perm_addr as well */ 11538 hw->phy.reset_if_overtemp = true; 11539 err = hw->mac.ops.reset_hw(hw); 11540 hw->phy.reset_if_overtemp = false; 11541 ixgbe_set_eee_capable(adapter); 11542 if (err == -ENOENT) { 11543 err = 0; 11544 } else if (err == -EOPNOTSUPP) { 11545 e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n"); 11546 e_dev_err("Reload the driver after installing a supported module.\n"); 11547 goto err_sw_init; 11548 } else if (err) { 11549 e_dev_err("HW Init failed: %d\n", err); 11550 goto err_sw_init; 11551 } 11552 11553 #ifdef CONFIG_PCI_IOV 11554 /* SR-IOV not supported on the 82598 */ 11555 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 11556 goto skip_sriov; 11557 /* Mailbox */ 11558 ixgbe_init_mbx_params_pf(hw); 11559 hw->mbx.ops = ii->mbx_ops; 11560 pci_sriov_set_totalvfs(pdev, IXGBE_MAX_VFS_DRV_LIMIT); 11561 ixgbe_enable_sriov(adapter, max_vfs); 11562 skip_sriov: 11563 11564 #endif 11565 netdev->features = NETIF_F_SG | 11566 NETIF_F_TSO | 11567 NETIF_F_TSO6 | 11568 NETIF_F_RXHASH | 11569 NETIF_F_RXCSUM | 11570 NETIF_F_HW_CSUM; 11571 11572 #define IXGBE_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \ 11573 NETIF_F_GSO_GRE_CSUM | \ 11574 NETIF_F_GSO_IPXIP4 | \ 11575 NETIF_F_GSO_IPXIP6 | \ 11576 NETIF_F_GSO_UDP_TUNNEL | \ 11577 NETIF_F_GSO_UDP_TUNNEL_CSUM) 11578 11579 netdev->gso_partial_features = IXGBE_GSO_PARTIAL_FEATURES; 11580 netdev->features |= NETIF_F_GSO_PARTIAL | 11581 IXGBE_GSO_PARTIAL_FEATURES; 11582 11583 if (hw->mac.type >= ixgbe_mac_82599EB) 11584 netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_GSO_UDP_L4; 11585 11586 #ifdef CONFIG_IXGBE_IPSEC 11587 #define IXGBE_ESP_FEATURES (NETIF_F_HW_ESP | \ 11588 NETIF_F_HW_ESP_TX_CSUM | \ 11589 NETIF_F_GSO_ESP) 11590 11591 if (adapter->ipsec) 11592 netdev->features |= IXGBE_ESP_FEATURES; 11593 #endif 11594 /* copy netdev features into list of user selectable features */ 11595 netdev->hw_features |= netdev->features | 11596 NETIF_F_HW_VLAN_CTAG_FILTER | 11597 NETIF_F_HW_VLAN_CTAG_RX | 11598 NETIF_F_HW_VLAN_CTAG_TX | 11599 NETIF_F_RXALL | 11600 NETIF_F_HW_L2FW_DOFFLOAD; 11601 11602 if (hw->mac.type >= ixgbe_mac_82599EB) 11603 netdev->hw_features |= NETIF_F_NTUPLE | 11604 NETIF_F_HW_TC; 11605 11606 netdev->features |= NETIF_F_HIGHDMA; 11607 11608 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; 11609 netdev->hw_enc_features |= netdev->vlan_features; 11610 netdev->mpls_features |= NETIF_F_SG | 11611 NETIF_F_TSO | 11612 NETIF_F_TSO6 | 11613 NETIF_F_HW_CSUM; 11614 netdev->mpls_features |= IXGBE_GSO_PARTIAL_FEATURES; 11615 11616 /* set this bit last since it cannot be part of vlan_features */ 11617 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | 11618 NETIF_F_HW_VLAN_CTAG_RX | 11619 NETIF_F_HW_VLAN_CTAG_TX; 11620 11621 netdev->priv_flags |= IFF_UNICAST_FLT; 11622 netdev->priv_flags |= IFF_SUPP_NOFCS; 11623 11624 netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | 11625 NETDEV_XDP_ACT_XSK_ZEROCOPY; 11626 11627 /* MTU range: 68 - 9710 */ 11628 netdev->min_mtu = ETH_MIN_MTU; 11629 netdev->max_mtu = IXGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN); 11630 11631 #ifdef CONFIG_IXGBE_DCB 11632 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE) 11633 netdev->dcbnl_ops = &ixgbe_dcbnl_ops; 11634 #endif 11635 11636 #ifdef IXGBE_FCOE 11637 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) { 11638 unsigned int fcoe_l; 11639 11640 if (hw->mac.ops.get_device_caps) { 11641 hw->mac.ops.get_device_caps(hw, &device_caps); 11642 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS) 11643 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 11644 } 11645 11646 11647 fcoe_l = min_t(int, IXGBE_FCRETA_SIZE, num_online_cpus()); 11648 adapter->ring_feature[RING_F_FCOE].limit = fcoe_l; 11649 11650 netdev->features |= NETIF_F_FSO | 11651 NETIF_F_FCOE_CRC; 11652 11653 netdev->vlan_features |= NETIF_F_FSO | 11654 NETIF_F_FCOE_CRC; 11655 } 11656 #endif /* IXGBE_FCOE */ 11657 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) 11658 netdev->hw_features |= NETIF_F_LRO; 11659 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 11660 netdev->features |= NETIF_F_LRO; 11661 11662 /* make sure the EEPROM is good */ 11663 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) { 11664 e_dev_err("The EEPROM Checksum Is Not Valid\n"); 11665 err = -EIO; 11666 goto err_sw_init; 11667 } 11668 11669 eth_platform_get_mac_address(&adapter->pdev->dev, 11670 adapter->hw.mac.perm_addr); 11671 11672 eth_hw_addr_set(netdev, hw->mac.perm_addr); 11673 11674 if (!is_valid_ether_addr(netdev->dev_addr)) { 11675 e_dev_err("invalid MAC address\n"); 11676 err = -EIO; 11677 goto err_sw_init; 11678 } 11679 11680 /* Set hw->mac.addr to permanent MAC address */ 11681 ether_addr_copy(hw->mac.addr, hw->mac.perm_addr); 11682 ixgbe_mac_set_default_filter(adapter); 11683 11684 if (hw->mac.type == ixgbe_mac_e610) 11685 mutex_init(&hw->aci.lock); 11686 timer_setup(&adapter->service_timer, ixgbe_service_timer, 0); 11687 11688 if (ixgbe_removed(hw->hw_addr)) { 11689 err = -EIO; 11690 goto err_sw_init; 11691 } 11692 INIT_WORK(&adapter->service_task, ixgbe_service_task); 11693 set_bit(__IXGBE_SERVICE_INITED, &adapter->state); 11694 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 11695 11696 err = ixgbe_init_interrupt_scheme(adapter); 11697 if (err) 11698 goto err_sw_init; 11699 11700 for (i = 0; i < adapter->num_rx_queues; i++) 11701 u64_stats_init(&adapter->rx_ring[i]->syncp); 11702 for (i = 0; i < adapter->num_tx_queues; i++) 11703 u64_stats_init(&adapter->tx_ring[i]->syncp); 11704 for (i = 0; i < adapter->num_xdp_queues; i++) 11705 u64_stats_init(&adapter->xdp_ring[i]->syncp); 11706 11707 /* WOL not supported for all devices */ 11708 adapter->wol = 0; 11709 hw->eeprom.ops.read(hw, 0x2c, &adapter->eeprom_cap); 11710 hw->wol_enabled = ixgbe_wol_supported(adapter, pdev->device, 11711 pdev->subsystem_device); 11712 if (hw->wol_enabled) 11713 adapter->wol = IXGBE_WUFC_MAG; 11714 11715 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); 11716 11717 /* save off EEPROM version number */ 11718 ixgbe_set_fw_version(adapter); 11719 11720 /* pick up the PCI bus settings for reporting later */ 11721 if (ixgbe_pcie_from_parent(hw)) 11722 ixgbe_get_parent_bus_info(adapter); 11723 else 11724 hw->mac.ops.get_bus_info(hw); 11725 11726 /* calculate the expected PCIe bandwidth required for optimal 11727 * performance. Note that some older parts will never have enough 11728 * bandwidth due to being older generation PCIe parts. We clamp these 11729 * parts to ensure no warning is displayed if it can't be fixed. 11730 */ 11731 switch (hw->mac.type) { 11732 case ixgbe_mac_82598EB: 11733 expected_gts = min(ixgbe_enumerate_functions(adapter) * 10, 16); 11734 break; 11735 default: 11736 expected_gts = ixgbe_enumerate_functions(adapter) * 10; 11737 break; 11738 } 11739 11740 /* don't check link if we failed to enumerate functions */ 11741 if (expected_gts > 0) 11742 ixgbe_check_minimum_link(adapter, expected_gts); 11743 11744 err = hw->eeprom.ops.read_pba_string(hw, part_str, sizeof(part_str)); 11745 if (err) 11746 strscpy(part_str, "Unknown", sizeof(part_str)); 11747 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present) 11748 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n", 11749 hw->mac.type, hw->phy.type, hw->phy.sfp_type, 11750 part_str); 11751 else 11752 e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n", 11753 hw->mac.type, hw->phy.type, part_str); 11754 11755 e_dev_info("%pM\n", netdev->dev_addr); 11756 11757 /* reset the hardware with the new settings */ 11758 err = hw->mac.ops.start_hw(hw); 11759 if (err == -EACCES) { 11760 /* We are running on a pre-production device, log a warning */ 11761 e_dev_warn("This device is a pre-production adapter/LOM. " 11762 "Please be aware there may be issues associated " 11763 "with your hardware. If you are experiencing " 11764 "problems please contact your Intel or hardware " 11765 "representative who provided you with this " 11766 "hardware.\n"); 11767 } 11768 strcpy(netdev->name, "eth%d"); 11769 pci_set_drvdata(pdev, adapter); 11770 11771 devl_lock(adapter->devlink); 11772 ixgbe_devlink_register_port(adapter); 11773 SET_NETDEV_DEVLINK_PORT(adapter->netdev, &adapter->devlink_port); 11774 11775 err = register_netdev(netdev); 11776 if (err) 11777 goto err_register; 11778 11779 11780 /* power down the optics for 82599 SFP+ fiber */ 11781 if (hw->mac.ops.disable_tx_laser) 11782 hw->mac.ops.disable_tx_laser(hw); 11783 11784 /* carrier off reporting is important to ethtool even BEFORE open */ 11785 netif_carrier_off(netdev); 11786 11787 #ifdef CONFIG_IXGBE_DCA 11788 if (dca_add_requester(&pdev->dev) == 0) { 11789 adapter->flags |= IXGBE_FLAG_DCA_ENABLED; 11790 ixgbe_setup_dca(adapter); 11791 } 11792 #endif 11793 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 11794 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs); 11795 for (i = 0; i < adapter->num_vfs; i++) 11796 ixgbe_vf_configuration(pdev, (i | 0x10000000)); 11797 } 11798 11799 /* firmware requires driver version to be 0xFFFFFFFF 11800 * since os does not support feature 11801 */ 11802 if (hw->mac.ops.set_fw_drv_ver) 11803 hw->mac.ops.set_fw_drv_ver(hw, 0xFF, 0xFF, 0xFF, 0xFF, 11804 sizeof(UTS_RELEASE) - 1, 11805 UTS_RELEASE); 11806 11807 /* add san mac addr to netdev */ 11808 ixgbe_add_sanmac_netdev(netdev); 11809 11810 e_dev_info("%s\n", ixgbe_default_device_descr); 11811 11812 #ifdef CONFIG_IXGBE_HWMON 11813 if (ixgbe_sysfs_init(adapter)) 11814 e_err(probe, "failed to allocate sysfs resources\n"); 11815 #endif /* CONFIG_IXGBE_HWMON */ 11816 11817 ixgbe_dbg_adapter_init(adapter); 11818 11819 /* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */ 11820 if (ixgbe_mng_enabled(hw) && ixgbe_is_sfp(hw) && hw->mac.ops.setup_link) 11821 hw->mac.ops.setup_link(hw, 11822 IXGBE_LINK_SPEED_10GB_FULL | IXGBE_LINK_SPEED_1GB_FULL, 11823 true); 11824 11825 err = ixgbe_mii_bus_init(hw); 11826 if (err) 11827 goto err_netdev; 11828 11829 ixgbe_devlink_init_regions(adapter); 11830 devl_register(adapter->devlink); 11831 devl_unlock(adapter->devlink); 11832 return 0; 11833 11834 err_netdev: 11835 unregister_netdev(netdev); 11836 err_register: 11837 devl_port_unregister(&adapter->devlink_port); 11838 devl_unlock(adapter->devlink); 11839 ixgbe_release_hw_control(adapter); 11840 ixgbe_clear_interrupt_scheme(adapter); 11841 if (hw->mac.type == ixgbe_mac_e610) 11842 mutex_destroy(&adapter->hw.aci.lock); 11843 err_sw_init: 11844 ixgbe_disable_sriov(adapter); 11845 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; 11846 iounmap(adapter->io_addr); 11847 kfree(adapter->jump_tables[0]); 11848 kfree(adapter->mac_table); 11849 kfree(adapter->rss_key); 11850 bitmap_free(adapter->af_xdp_zc_qps); 11851 err_ioremap: 11852 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); 11853 free_netdev(netdev); 11854 err_alloc_etherdev: 11855 devlink_free(adapter->devlink); 11856 pci_release_mem_regions(pdev); 11857 err_devlink: 11858 err_pci_reg: 11859 err_dma: 11860 if (!adapter || disable_dev) 11861 pci_disable_device(pdev); 11862 return err; 11863 } 11864 11865 /** 11866 * ixgbe_remove - Device Removal Routine 11867 * @pdev: PCI device information struct 11868 * 11869 * ixgbe_remove is called by the PCI subsystem to alert the driver 11870 * that it should release a PCI device. The could be caused by a 11871 * Hot-Plug event, or because the driver is going to be removed from 11872 * memory. 11873 **/ 11874 static void ixgbe_remove(struct pci_dev *pdev) 11875 { 11876 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 11877 struct net_device *netdev; 11878 bool disable_dev; 11879 int i; 11880 11881 /* if !adapter then we already cleaned up in probe */ 11882 if (!adapter) 11883 return; 11884 11885 netdev = adapter->netdev; 11886 devl_lock(adapter->devlink); 11887 devl_unregister(adapter->devlink); 11888 ixgbe_devlink_destroy_regions(adapter); 11889 ixgbe_dbg_adapter_exit(adapter); 11890 11891 set_bit(__IXGBE_REMOVING, &adapter->state); 11892 cancel_work_sync(&adapter->service_task); 11893 11894 if (adapter->hw.mac.type == ixgbe_mac_e610) { 11895 ixgbe_disable_link_status_events(adapter); 11896 mutex_destroy(&adapter->hw.aci.lock); 11897 } 11898 11899 if (adapter->mii_bus) 11900 mdiobus_unregister(adapter->mii_bus); 11901 11902 #ifdef CONFIG_IXGBE_DCA 11903 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { 11904 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; 11905 dca_remove_requester(&pdev->dev); 11906 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 11907 IXGBE_DCA_CTRL_DCA_DISABLE); 11908 } 11909 11910 #endif 11911 #ifdef CONFIG_IXGBE_HWMON 11912 ixgbe_sysfs_exit(adapter); 11913 #endif /* CONFIG_IXGBE_HWMON */ 11914 11915 /* remove the added san mac */ 11916 ixgbe_del_sanmac_netdev(netdev); 11917 11918 #ifdef CONFIG_PCI_IOV 11919 ixgbe_disable_sriov(adapter); 11920 #endif 11921 if (netdev->reg_state == NETREG_REGISTERED) 11922 unregister_netdev(netdev); 11923 11924 devl_port_unregister(&adapter->devlink_port); 11925 devl_unlock(adapter->devlink); 11926 devlink_free(adapter->devlink); 11927 11928 ixgbe_stop_ipsec_offload(adapter); 11929 ixgbe_clear_interrupt_scheme(adapter); 11930 11931 ixgbe_release_hw_control(adapter); 11932 11933 #ifdef CONFIG_DCB 11934 kfree(adapter->ixgbe_ieee_pfc); 11935 kfree(adapter->ixgbe_ieee_ets); 11936 11937 #endif 11938 iounmap(adapter->io_addr); 11939 pci_release_mem_regions(pdev); 11940 11941 e_dev_info("complete\n"); 11942 11943 for (i = 0; i < IXGBE_MAX_LINK_HANDLE; i++) { 11944 if (adapter->jump_tables[i]) { 11945 kfree(adapter->jump_tables[i]->input); 11946 kfree(adapter->jump_tables[i]->mask); 11947 } 11948 kfree(adapter->jump_tables[i]); 11949 } 11950 11951 kfree(adapter->mac_table); 11952 kfree(adapter->rss_key); 11953 bitmap_free(adapter->af_xdp_zc_qps); 11954 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); 11955 free_netdev(netdev); 11956 11957 if (disable_dev) 11958 pci_disable_device(pdev); 11959 } 11960 11961 /** 11962 * ixgbe_io_error_detected - called when PCI error is detected 11963 * @pdev: Pointer to PCI device 11964 * @state: The current pci connection state 11965 * 11966 * This function is called after a PCI bus error affecting 11967 * this device has been detected. 11968 */ 11969 static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, 11970 pci_channel_state_t state) 11971 { 11972 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 11973 struct net_device *netdev = adapter->netdev; 11974 11975 #ifdef CONFIG_PCI_IOV 11976 struct ixgbe_hw *hw = &adapter->hw; 11977 struct pci_dev *bdev, *vfdev; 11978 u32 dw0, dw1, dw2, dw3; 11979 int vf, pos; 11980 u16 req_id, pf_func; 11981 11982 if (adapter->hw.mac.type == ixgbe_mac_82598EB || 11983 adapter->num_vfs == 0) 11984 goto skip_bad_vf_detection; 11985 11986 bdev = pdev->bus->self; 11987 while (bdev && (pci_pcie_type(bdev) != PCI_EXP_TYPE_ROOT_PORT)) 11988 bdev = bdev->bus->self; 11989 11990 if (!bdev) 11991 goto skip_bad_vf_detection; 11992 11993 pos = pci_find_ext_capability(bdev, PCI_EXT_CAP_ID_ERR); 11994 if (!pos) 11995 goto skip_bad_vf_detection; 11996 11997 dw0 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG); 11998 dw1 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 4); 11999 dw2 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 8); 12000 dw3 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 12); 12001 if (ixgbe_removed(hw->hw_addr)) 12002 goto skip_bad_vf_detection; 12003 12004 req_id = dw1 >> 16; 12005 /* On the 82599 if bit 7 of the requestor ID is set then it's a VF */ 12006 if (!(req_id & 0x0080)) 12007 goto skip_bad_vf_detection; 12008 12009 pf_func = req_id & 0x01; 12010 if ((pf_func & 1) == (pdev->devfn & 1)) { 12011 unsigned int device_id; 12012 12013 vf = FIELD_GET(0x7F, req_id); 12014 e_dev_err("VF %d has caused a PCIe error\n", vf); 12015 e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: " 12016 "%8.8x\tdw3: %8.8x\n", 12017 dw0, dw1, dw2, dw3); 12018 switch (adapter->hw.mac.type) { 12019 case ixgbe_mac_82599EB: 12020 device_id = IXGBE_82599_VF_DEVICE_ID; 12021 break; 12022 case ixgbe_mac_X540: 12023 device_id = IXGBE_X540_VF_DEVICE_ID; 12024 break; 12025 case ixgbe_mac_X550: 12026 device_id = IXGBE_DEV_ID_X550_VF; 12027 break; 12028 case ixgbe_mac_X550EM_x: 12029 device_id = IXGBE_DEV_ID_X550EM_X_VF; 12030 break; 12031 case ixgbe_mac_x550em_a: 12032 device_id = IXGBE_DEV_ID_X550EM_A_VF; 12033 break; 12034 case ixgbe_mac_e610: 12035 device_id = IXGBE_DEV_ID_E610_VF; 12036 break; 12037 default: 12038 device_id = 0; 12039 break; 12040 } 12041 12042 /* Find the pci device of the offending VF */ 12043 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, device_id, NULL); 12044 while (vfdev) { 12045 if (vfdev->devfn == (req_id & 0xFF)) 12046 break; 12047 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, 12048 device_id, vfdev); 12049 } 12050 /* 12051 * There's a slim chance the VF could have been hot plugged, 12052 * so if it is no longer present we don't need to issue the 12053 * VFLR. Just clean up the AER in that case. 12054 */ 12055 if (vfdev) { 12056 pcie_flr(vfdev); 12057 /* Free device reference count */ 12058 pci_dev_put(vfdev); 12059 } 12060 } 12061 12062 /* 12063 * Even though the error may have occurred on the other port 12064 * we still need to increment the vf error reference count for 12065 * both ports because the I/O resume function will be called 12066 * for both of them. 12067 */ 12068 adapter->vferr_refcount++; 12069 12070 return PCI_ERS_RESULT_RECOVERED; 12071 12072 skip_bad_vf_detection: 12073 #endif /* CONFIG_PCI_IOV */ 12074 if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) 12075 return PCI_ERS_RESULT_DISCONNECT; 12076 12077 if (!netif_device_present(netdev)) 12078 return PCI_ERS_RESULT_DISCONNECT; 12079 12080 rtnl_lock(); 12081 netif_device_detach(netdev); 12082 12083 if (netif_running(netdev)) 12084 ixgbe_close_suspend(adapter); 12085 12086 if (state == pci_channel_io_perm_failure) { 12087 rtnl_unlock(); 12088 return PCI_ERS_RESULT_DISCONNECT; 12089 } 12090 12091 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) 12092 pci_disable_device(pdev); 12093 rtnl_unlock(); 12094 12095 /* Request a slot reset. */ 12096 return PCI_ERS_RESULT_NEED_RESET; 12097 } 12098 12099 /** 12100 * ixgbe_io_slot_reset - called after the pci bus has been reset. 12101 * @pdev: Pointer to PCI device 12102 * 12103 * Restart the card from scratch, as if from a cold-boot. 12104 */ 12105 static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) 12106 { 12107 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 12108 pci_ers_result_t result; 12109 12110 if (pci_enable_device_mem(pdev)) { 12111 e_err(probe, "Cannot re-enable PCI device after reset.\n"); 12112 result = PCI_ERS_RESULT_DISCONNECT; 12113 } else { 12114 smp_mb__before_atomic(); 12115 clear_bit(__IXGBE_DISABLED, &adapter->state); 12116 adapter->hw.hw_addr = adapter->io_addr; 12117 pci_set_master(pdev); 12118 pci_restore_state(pdev); 12119 pci_save_state(pdev); 12120 12121 pci_wake_from_d3(pdev, false); 12122 12123 ixgbe_reset(adapter); 12124 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 12125 result = PCI_ERS_RESULT_RECOVERED; 12126 } 12127 12128 return result; 12129 } 12130 12131 /** 12132 * ixgbe_io_resume - called when traffic can start flowing again. 12133 * @pdev: Pointer to PCI device 12134 * 12135 * This callback is called when the error recovery driver tells us that 12136 * its OK to resume normal operation. 12137 */ 12138 static void ixgbe_io_resume(struct pci_dev *pdev) 12139 { 12140 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 12141 struct net_device *netdev = adapter->netdev; 12142 12143 #ifdef CONFIG_PCI_IOV 12144 if (adapter->vferr_refcount) { 12145 e_info(drv, "Resuming after VF err\n"); 12146 adapter->vferr_refcount--; 12147 return; 12148 } 12149 12150 #endif 12151 rtnl_lock(); 12152 if (netif_running(netdev)) 12153 ixgbe_open(netdev); 12154 12155 netif_device_attach(netdev); 12156 rtnl_unlock(); 12157 } 12158 12159 static const struct pci_error_handlers ixgbe_err_handler = { 12160 .error_detected = ixgbe_io_error_detected, 12161 .slot_reset = ixgbe_io_slot_reset, 12162 .resume = ixgbe_io_resume, 12163 }; 12164 12165 static DEFINE_SIMPLE_DEV_PM_OPS(ixgbe_pm_ops, ixgbe_suspend, ixgbe_resume); 12166 12167 static struct pci_driver ixgbe_driver = { 12168 .name = ixgbe_driver_name, 12169 .id_table = ixgbe_pci_tbl, 12170 .probe = ixgbe_probe, 12171 .remove = ixgbe_remove, 12172 .driver.pm = pm_sleep_ptr(&ixgbe_pm_ops), 12173 .shutdown = ixgbe_shutdown, 12174 .sriov_configure = ixgbe_pci_sriov_configure, 12175 .err_handler = &ixgbe_err_handler 12176 }; 12177 12178 /** 12179 * ixgbe_init_module - Driver Registration Routine 12180 * 12181 * ixgbe_init_module is the first routine called when the driver is 12182 * loaded. All it does is register with the PCI subsystem. 12183 **/ 12184 static int __init ixgbe_init_module(void) 12185 { 12186 int ret; 12187 pr_info("%s\n", ixgbe_driver_string); 12188 pr_info("%s\n", ixgbe_copyright); 12189 12190 ixgbe_wq = create_singlethread_workqueue(ixgbe_driver_name); 12191 if (!ixgbe_wq) { 12192 pr_err("%s: Failed to create workqueue\n", ixgbe_driver_name); 12193 return -ENOMEM; 12194 } 12195 12196 ixgbe_dbg_init(); 12197 12198 ret = pci_register_driver(&ixgbe_driver); 12199 if (ret) { 12200 destroy_workqueue(ixgbe_wq); 12201 ixgbe_dbg_exit(); 12202 return ret; 12203 } 12204 12205 #ifdef CONFIG_IXGBE_DCA 12206 dca_register_notify(&dca_notifier); 12207 #endif 12208 12209 return 0; 12210 } 12211 12212 module_init(ixgbe_init_module); 12213 12214 /** 12215 * ixgbe_exit_module - Driver Exit Cleanup Routine 12216 * 12217 * ixgbe_exit_module is called just before the driver is removed 12218 * from memory. 12219 **/ 12220 static void __exit ixgbe_exit_module(void) 12221 { 12222 #ifdef CONFIG_IXGBE_DCA 12223 dca_unregister_notify(&dca_notifier); 12224 #endif 12225 pci_unregister_driver(&ixgbe_driver); 12226 12227 ixgbe_dbg_exit(); 12228 if (ixgbe_wq) { 12229 destroy_workqueue(ixgbe_wq); 12230 ixgbe_wq = NULL; 12231 } 12232 } 12233 12234 #ifdef CONFIG_IXGBE_DCA 12235 static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event, 12236 void *p) 12237 { 12238 int ret_val; 12239 12240 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event, 12241 __ixgbe_notify_dca); 12242 12243 return ret_val ? NOTIFY_BAD : NOTIFY_DONE; 12244 } 12245 12246 #endif /* CONFIG_IXGBE_DCA */ 12247 12248 module_exit(ixgbe_exit_module); 12249 12250 /* ixgbe_main.c */ 12251