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 53 char ixgbe_driver_name[] = "ixgbe"; 54 static const char ixgbe_driver_string[] = 55 "Intel(R) 10 Gigabit PCI Express Network Driver"; 56 #ifdef IXGBE_FCOE 57 char ixgbe_default_device_descr[] = 58 "Intel(R) 10 Gigabit Network Connection"; 59 #else 60 static char ixgbe_default_device_descr[] = 61 "Intel(R) 10 Gigabit Network Connection"; 62 #endif 63 static const char ixgbe_copyright[] = 64 "Copyright (c) 1999-2016 Intel Corporation."; 65 66 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"; 67 68 static const struct ixgbe_info *ixgbe_info_tbl[] = { 69 [board_82598] = &ixgbe_82598_info, 70 [board_82599] = &ixgbe_82599_info, 71 [board_X540] = &ixgbe_X540_info, 72 [board_X550] = &ixgbe_X550_info, 73 [board_X550EM_x] = &ixgbe_X550EM_x_info, 74 [board_x550em_x_fw] = &ixgbe_x550em_x_fw_info, 75 [board_x550em_a] = &ixgbe_x550em_a_info, 76 [board_x550em_a_fw] = &ixgbe_x550em_a_fw_info, 77 [board_e610] = &ixgbe_e610_info, 78 }; 79 80 /* ixgbe_pci_tbl - PCI Device ID Table 81 * 82 * Wildcard entries (PCI_ANY_ID) should come last 83 * Last entry must be all 0s 84 * 85 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 86 * Class, Class Mask, private data (not used) } 87 */ 88 static const struct pci_device_id ixgbe_pci_tbl[] = { 89 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), board_82598 }, 90 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), board_82598 }, 91 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), board_82598 }, 92 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), board_82598 }, 93 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2), board_82598 }, 94 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), board_82598 }, 95 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), board_82598 }, 96 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), board_82598 }, 97 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), board_82598 }, 98 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), board_82598 }, 99 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), board_82598 }, 100 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), board_82598 }, 101 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), board_82599 }, 102 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM), board_82599 }, 103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR), board_82599 }, 104 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), board_82599 }, 105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM), board_82599 }, 106 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ), board_82599 }, 107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4), board_82599 }, 108 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE), board_82599 }, 109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE), board_82599 }, 110 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM), board_82599 }, 111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE), board_82599 }, 112 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T), board_X540 }, 113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2), board_82599 }, 114 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS), board_82599 }, 115 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_QSFP_SF_QP), board_82599 }, 116 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599EN_SFP), board_82599 }, 117 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF_QP), board_82599 }, 118 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T1), board_X540 }, 119 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T), board_X550}, 120 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T1), board_X550}, 121 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KX4), board_X550EM_x}, 122 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_XFI), board_X550EM_x}, 123 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KR), board_X550EM_x}, 124 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_10G_T), board_X550EM_x}, 125 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_SFP), board_X550EM_x}, 126 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_1G_T), board_x550em_x_fw}, 127 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR), board_x550em_a }, 128 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR_L), board_x550em_a }, 129 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP_N), board_x550em_a }, 130 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII), board_x550em_a }, 131 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII_L), board_x550em_a }, 132 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_10G_T), board_x550em_a}, 133 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP), board_x550em_a }, 134 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T), board_x550em_a_fw }, 135 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T_L), board_x550em_a_fw }, 136 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_BACKPLANE), board_e610}, 137 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_SFP), board_e610}, 138 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_10G_T), board_e610}, 139 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_2_5G_T), board_e610}, 140 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_SGMII), board_e610}, 141 /* required last entry */ 142 {0, } 143 }; 144 MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); 145 146 #ifdef CONFIG_IXGBE_DCA 147 static int ixgbe_notify_dca(struct notifier_block *, unsigned long event, 148 void *p); 149 static struct notifier_block dca_notifier = { 150 .notifier_call = ixgbe_notify_dca, 151 .next = NULL, 152 .priority = 0 153 }; 154 #endif 155 156 #ifdef CONFIG_PCI_IOV 157 static unsigned int max_vfs; 158 module_param(max_vfs, uint, 0); 159 MODULE_PARM_DESC(max_vfs, 160 "Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)"); 161 #endif /* CONFIG_PCI_IOV */ 162 163 static bool allow_unsupported_sfp; 164 module_param(allow_unsupported_sfp, bool, 0444); 165 MODULE_PARM_DESC(allow_unsupported_sfp, 166 "Allow unsupported and untested SFP+ modules on 82599-based adapters"); 167 168 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) 169 static int debug = -1; 170 module_param(debug, int, 0); 171 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); 172 173 MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); 174 MODULE_LICENSE("GPL v2"); 175 176 DEFINE_STATIC_KEY_FALSE(ixgbe_xdp_locking_key); 177 EXPORT_SYMBOL(ixgbe_xdp_locking_key); 178 179 static struct workqueue_struct *ixgbe_wq; 180 181 static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev); 182 static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *); 183 static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *); 184 static void ixgbe_watchdog_update_link(struct ixgbe_adapter *); 185 186 static const struct net_device_ops ixgbe_netdev_ops; 187 188 static bool netif_is_ixgbe(struct net_device *dev) 189 { 190 return dev && (dev->netdev_ops == &ixgbe_netdev_ops); 191 } 192 193 static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter, 194 u32 reg, u16 *value) 195 { 196 struct pci_dev *parent_dev; 197 struct pci_bus *parent_bus; 198 199 parent_bus = adapter->pdev->bus->parent; 200 if (!parent_bus) 201 return -1; 202 203 parent_dev = parent_bus->self; 204 if (!parent_dev) 205 return -1; 206 207 if (!pci_is_pcie(parent_dev)) 208 return -1; 209 210 pcie_capability_read_word(parent_dev, reg, value); 211 if (*value == IXGBE_FAILED_READ_CFG_WORD && 212 ixgbe_check_cfg_remove(&adapter->hw, parent_dev)) 213 return -1; 214 return 0; 215 } 216 217 static int ixgbe_get_parent_bus_info(struct ixgbe_adapter *adapter) 218 { 219 struct ixgbe_hw *hw = &adapter->hw; 220 u16 link_status = 0; 221 int err; 222 223 hw->bus.type = ixgbe_bus_type_pci_express; 224 225 /* Get the negotiated link width and speed from PCI config space of the 226 * parent, as this device is behind a switch 227 */ 228 err = ixgbe_read_pci_cfg_word_parent(adapter, 18, &link_status); 229 230 /* assume caller will handle error case */ 231 if (err) 232 return err; 233 234 hw->bus.width = ixgbe_convert_bus_width(link_status); 235 hw->bus.speed = ixgbe_convert_bus_speed(link_status); 236 237 return 0; 238 } 239 240 /** 241 * ixgbe_pcie_from_parent - Determine whether PCIe info should come from parent 242 * @hw: hw specific details 243 * 244 * This function is used by probe to determine whether a device's PCI-Express 245 * bandwidth details should be gathered from the parent bus instead of from the 246 * device. Used to ensure that various locations all have the correct device ID 247 * checks. 248 * 249 * Return: true if information should be collected from the parent bus, false 250 * otherwise 251 */ 252 static bool ixgbe_pcie_from_parent(struct ixgbe_hw *hw) 253 { 254 switch (hw->device_id) { 255 case IXGBE_DEV_ID_82599_SFP_SF_QP: 256 case IXGBE_DEV_ID_82599_QSFP_SF_QP: 257 return true; 258 default: 259 return false; 260 } 261 } 262 263 static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter, 264 int expected_gts) 265 { 266 struct ixgbe_hw *hw = &adapter->hw; 267 struct pci_dev *pdev; 268 269 /* Some devices are not connected over PCIe and thus do not negotiate 270 * speed. These devices do not have valid bus info, and thus any report 271 * we generate may not be correct. 272 */ 273 if (hw->bus.type == ixgbe_bus_type_internal) 274 return; 275 276 /* determine whether to use the parent device */ 277 if (ixgbe_pcie_from_parent(&adapter->hw)) 278 pdev = adapter->pdev->bus->parent->self; 279 else 280 pdev = adapter->pdev; 281 282 pcie_print_link_status(pdev); 283 } 284 285 static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter) 286 { 287 if (!test_bit(__IXGBE_DOWN, &adapter->state) && 288 !test_bit(__IXGBE_REMOVING, &adapter->state) && 289 !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state)) 290 queue_work(ixgbe_wq, &adapter->service_task); 291 } 292 293 static void ixgbe_remove_adapter(struct ixgbe_hw *hw) 294 { 295 struct ixgbe_adapter *adapter = hw->back; 296 297 if (!hw->hw_addr) 298 return; 299 hw->hw_addr = NULL; 300 e_dev_err("Adapter removed\n"); 301 if (test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) 302 ixgbe_service_event_schedule(adapter); 303 } 304 305 static u32 ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg) 306 { 307 u8 __iomem *reg_addr; 308 u32 value; 309 int i; 310 311 reg_addr = READ_ONCE(hw->hw_addr); 312 if (ixgbe_removed(reg_addr)) 313 return IXGBE_FAILED_READ_REG; 314 315 /* Register read of 0xFFFFFFF can indicate the adapter has been removed, 316 * so perform several status register reads to determine if the adapter 317 * has been removed. 318 */ 319 for (i = 0; i < IXGBE_FAILED_READ_RETRIES; i++) { 320 value = readl(reg_addr + IXGBE_STATUS); 321 if (value != IXGBE_FAILED_READ_REG) 322 break; 323 mdelay(3); 324 } 325 326 if (value == IXGBE_FAILED_READ_REG) 327 ixgbe_remove_adapter(hw); 328 else 329 value = readl(reg_addr + reg); 330 return value; 331 } 332 333 /** 334 * ixgbe_read_reg - Read from device register 335 * @hw: hw specific details 336 * @reg: offset of register to read 337 * 338 * Returns : value read or IXGBE_FAILED_READ_REG if removed 339 * 340 * This function is used to read device registers. It checks for device 341 * removal by confirming any read that returns all ones by checking the 342 * status register value for all ones. This function avoids reading from 343 * the hardware if a removal was previously detected in which case it 344 * returns IXGBE_FAILED_READ_REG (all ones). 345 */ 346 u32 ixgbe_read_reg(struct ixgbe_hw *hw, u32 reg) 347 { 348 u8 __iomem *reg_addr = READ_ONCE(hw->hw_addr); 349 u32 value; 350 351 if (ixgbe_removed(reg_addr)) 352 return IXGBE_FAILED_READ_REG; 353 if (unlikely(hw->phy.nw_mng_if_sel & 354 IXGBE_NW_MNG_IF_SEL_SGMII_ENABLE)) { 355 struct ixgbe_adapter *adapter; 356 int i; 357 358 for (i = 0; i < 200; ++i) { 359 value = readl(reg_addr + IXGBE_MAC_SGMII_BUSY); 360 if (likely(!value)) 361 goto writes_completed; 362 if (value == IXGBE_FAILED_READ_REG) { 363 ixgbe_remove_adapter(hw); 364 return IXGBE_FAILED_READ_REG; 365 } 366 udelay(5); 367 } 368 369 adapter = hw->back; 370 e_warn(hw, "register writes incomplete %08x\n", value); 371 } 372 373 writes_completed: 374 value = readl(reg_addr + reg); 375 if (unlikely(value == IXGBE_FAILED_READ_REG)) 376 value = ixgbe_check_remove(hw, reg); 377 return value; 378 } 379 380 static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev) 381 { 382 u16 value; 383 384 pci_read_config_word(pdev, PCI_VENDOR_ID, &value); 385 if (value == IXGBE_FAILED_READ_CFG_WORD) { 386 ixgbe_remove_adapter(hw); 387 return true; 388 } 389 return false; 390 } 391 392 u16 ixgbe_read_pci_cfg_word(struct ixgbe_hw *hw, u32 reg) 393 { 394 struct ixgbe_adapter *adapter = hw->back; 395 u16 value; 396 397 if (ixgbe_removed(hw->hw_addr)) 398 return IXGBE_FAILED_READ_CFG_WORD; 399 pci_read_config_word(adapter->pdev, reg, &value); 400 if (value == IXGBE_FAILED_READ_CFG_WORD && 401 ixgbe_check_cfg_remove(hw, adapter->pdev)) 402 return IXGBE_FAILED_READ_CFG_WORD; 403 return value; 404 } 405 406 #ifdef CONFIG_PCI_IOV 407 static u32 ixgbe_read_pci_cfg_dword(struct ixgbe_hw *hw, u32 reg) 408 { 409 struct ixgbe_adapter *adapter = hw->back; 410 u32 value; 411 412 if (ixgbe_removed(hw->hw_addr)) 413 return IXGBE_FAILED_READ_CFG_DWORD; 414 pci_read_config_dword(adapter->pdev, reg, &value); 415 if (value == IXGBE_FAILED_READ_CFG_DWORD && 416 ixgbe_check_cfg_remove(hw, adapter->pdev)) 417 return IXGBE_FAILED_READ_CFG_DWORD; 418 return value; 419 } 420 #endif /* CONFIG_PCI_IOV */ 421 422 void ixgbe_write_pci_cfg_word(struct ixgbe_hw *hw, u32 reg, u16 value) 423 { 424 struct ixgbe_adapter *adapter = hw->back; 425 426 if (ixgbe_removed(hw->hw_addr)) 427 return; 428 pci_write_config_word(adapter->pdev, reg, value); 429 } 430 431 static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter) 432 { 433 BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state)); 434 435 /* flush memory to make sure state is correct before next watchdog */ 436 smp_mb__before_atomic(); 437 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 438 } 439 440 struct ixgbe_reg_info { 441 u32 ofs; 442 char *name; 443 }; 444 445 static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = { 446 447 /* General Registers */ 448 {IXGBE_CTRL, "CTRL"}, 449 {IXGBE_STATUS, "STATUS"}, 450 {IXGBE_CTRL_EXT, "CTRL_EXT"}, 451 452 /* Interrupt Registers */ 453 {IXGBE_EICR, "EICR"}, 454 455 /* RX Registers */ 456 {IXGBE_SRRCTL(0), "SRRCTL"}, 457 {IXGBE_DCA_RXCTRL(0), "DRXCTL"}, 458 {IXGBE_RDLEN(0), "RDLEN"}, 459 {IXGBE_RDH(0), "RDH"}, 460 {IXGBE_RDT(0), "RDT"}, 461 {IXGBE_RXDCTL(0), "RXDCTL"}, 462 {IXGBE_RDBAL(0), "RDBAL"}, 463 {IXGBE_RDBAH(0), "RDBAH"}, 464 465 /* TX Registers */ 466 {IXGBE_TDBAL(0), "TDBAL"}, 467 {IXGBE_TDBAH(0), "TDBAH"}, 468 {IXGBE_TDLEN(0), "TDLEN"}, 469 {IXGBE_TDH(0), "TDH"}, 470 {IXGBE_TDT(0), "TDT"}, 471 {IXGBE_TXDCTL(0), "TXDCTL"}, 472 473 /* List Terminator */ 474 { .name = NULL } 475 }; 476 477 478 /* 479 * ixgbe_regdump - register printout routine 480 */ 481 static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo) 482 { 483 int i; 484 char rname[16]; 485 u32 regs[64]; 486 487 switch (reginfo->ofs) { 488 case IXGBE_SRRCTL(0): 489 for (i = 0; i < 64; i++) 490 regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i)); 491 break; 492 case IXGBE_DCA_RXCTRL(0): 493 for (i = 0; i < 64; i++) 494 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i)); 495 break; 496 case IXGBE_RDLEN(0): 497 for (i = 0; i < 64; i++) 498 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i)); 499 break; 500 case IXGBE_RDH(0): 501 for (i = 0; i < 64; i++) 502 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i)); 503 break; 504 case IXGBE_RDT(0): 505 for (i = 0; i < 64; i++) 506 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i)); 507 break; 508 case IXGBE_RXDCTL(0): 509 for (i = 0; i < 64; i++) 510 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); 511 break; 512 case IXGBE_RDBAL(0): 513 for (i = 0; i < 64; i++) 514 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i)); 515 break; 516 case IXGBE_RDBAH(0): 517 for (i = 0; i < 64; i++) 518 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i)); 519 break; 520 case IXGBE_TDBAL(0): 521 for (i = 0; i < 64; i++) 522 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i)); 523 break; 524 case IXGBE_TDBAH(0): 525 for (i = 0; i < 64; i++) 526 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i)); 527 break; 528 case IXGBE_TDLEN(0): 529 for (i = 0; i < 64; i++) 530 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i)); 531 break; 532 case IXGBE_TDH(0): 533 for (i = 0; i < 64; i++) 534 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i)); 535 break; 536 case IXGBE_TDT(0): 537 for (i = 0; i < 64; i++) 538 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i)); 539 break; 540 case IXGBE_TXDCTL(0): 541 for (i = 0; i < 64; i++) 542 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i)); 543 break; 544 default: 545 pr_info("%-15s %08x\n", 546 reginfo->name, IXGBE_READ_REG(hw, reginfo->ofs)); 547 return; 548 } 549 550 i = 0; 551 while (i < 64) { 552 int j; 553 char buf[9 * 8 + 1]; 554 char *p = buf; 555 556 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i, i + 7); 557 for (j = 0; j < 8; j++) 558 p += sprintf(p, " %08x", regs[i++]); 559 pr_err("%-15s%s\n", rname, buf); 560 } 561 562 } 563 564 static void ixgbe_print_buffer(struct ixgbe_ring *ring, int n) 565 { 566 struct ixgbe_tx_buffer *tx_buffer; 567 568 tx_buffer = &ring->tx_buffer_info[ring->next_to_clean]; 569 pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n", 570 n, ring->next_to_use, ring->next_to_clean, 571 (u64)dma_unmap_addr(tx_buffer, dma), 572 dma_unmap_len(tx_buffer, len), 573 tx_buffer->next_to_watch, 574 (u64)tx_buffer->time_stamp); 575 } 576 577 /* 578 * ixgbe_dump - Print registers, tx-rings and rx-rings 579 */ 580 static void ixgbe_dump(struct ixgbe_adapter *adapter) 581 { 582 struct net_device *netdev = adapter->netdev; 583 struct ixgbe_hw *hw = &adapter->hw; 584 struct ixgbe_reg_info *reginfo; 585 int n = 0; 586 struct ixgbe_ring *ring; 587 struct ixgbe_tx_buffer *tx_buffer; 588 union ixgbe_adv_tx_desc *tx_desc; 589 struct my_u0 { u64 a; u64 b; } *u0; 590 struct ixgbe_ring *rx_ring; 591 union ixgbe_adv_rx_desc *rx_desc; 592 struct ixgbe_rx_buffer *rx_buffer_info; 593 int i = 0; 594 595 if (!netif_msg_hw(adapter)) 596 return; 597 598 /* Print netdevice Info */ 599 if (netdev) { 600 dev_info(&adapter->pdev->dev, "Net device Info\n"); 601 pr_info("Device Name state " 602 "trans_start\n"); 603 pr_info("%-15s %016lX %016lX\n", 604 netdev->name, 605 netdev->state, 606 dev_trans_start(netdev)); 607 } 608 609 /* Print Registers */ 610 dev_info(&adapter->pdev->dev, "Register Dump\n"); 611 pr_info(" Register Name Value\n"); 612 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl; 613 reginfo->name; reginfo++) { 614 ixgbe_regdump(hw, reginfo); 615 } 616 617 /* Print TX Ring Summary */ 618 if (!netdev || !netif_running(netdev)) 619 return; 620 621 dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); 622 pr_info(" %s %s %s %s\n", 623 "Queue [NTU] [NTC] [bi(ntc)->dma ]", 624 "leng", "ntw", "timestamp"); 625 for (n = 0; n < adapter->num_tx_queues; n++) { 626 ring = adapter->tx_ring[n]; 627 ixgbe_print_buffer(ring, n); 628 } 629 630 for (n = 0; n < adapter->num_xdp_queues; n++) { 631 ring = adapter->xdp_ring[n]; 632 ixgbe_print_buffer(ring, n); 633 } 634 635 /* Print TX Rings */ 636 if (!netif_msg_tx_done(adapter)) 637 goto rx_ring_summary; 638 639 dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); 640 641 /* Transmit Descriptor Formats 642 * 643 * 82598 Advanced Transmit Descriptor 644 * +--------------------------------------------------------------+ 645 * 0 | Buffer Address [63:0] | 646 * +--------------------------------------------------------------+ 647 * 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN | 648 * +--------------------------------------------------------------+ 649 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0 650 * 651 * 82598 Advanced Transmit Descriptor (Write-Back Format) 652 * +--------------------------------------------------------------+ 653 * 0 | RSV [63:0] | 654 * +--------------------------------------------------------------+ 655 * 8 | RSV | STA | NXTSEQ | 656 * +--------------------------------------------------------------+ 657 * 63 36 35 32 31 0 658 * 659 * 82599+ Advanced Transmit Descriptor 660 * +--------------------------------------------------------------+ 661 * 0 | Buffer Address [63:0] | 662 * +--------------------------------------------------------------+ 663 * 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN | 664 * +--------------------------------------------------------------+ 665 * 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0 666 * 667 * 82599+ Advanced Transmit Descriptor (Write-Back Format) 668 * +--------------------------------------------------------------+ 669 * 0 | RSV [63:0] | 670 * +--------------------------------------------------------------+ 671 * 8 | RSV | STA | RSV | 672 * +--------------------------------------------------------------+ 673 * 63 36 35 32 31 0 674 */ 675 676 for (n = 0; n < adapter->num_tx_queues; n++) { 677 ring = adapter->tx_ring[n]; 678 pr_info("------------------------------------\n"); 679 pr_info("TX QUEUE INDEX = %d\n", ring->queue_index); 680 pr_info("------------------------------------\n"); 681 pr_info("%s%s %s %s %s %s\n", 682 "T [desc] [address 63:0 ] ", 683 "[PlPOIdStDDt Ln] [bi->dma ] ", 684 "leng", "ntw", "timestamp", "bi->skb"); 685 686 for (i = 0; ring->desc && (i < ring->count); i++) { 687 tx_desc = IXGBE_TX_DESC(ring, i); 688 tx_buffer = &ring->tx_buffer_info[i]; 689 u0 = (struct my_u0 *)tx_desc; 690 if (dma_unmap_len(tx_buffer, len) > 0) { 691 const char *ring_desc; 692 693 if (i == ring->next_to_use && 694 i == ring->next_to_clean) 695 ring_desc = " NTC/U"; 696 else if (i == ring->next_to_use) 697 ring_desc = " NTU"; 698 else if (i == ring->next_to_clean) 699 ring_desc = " NTC"; 700 else 701 ring_desc = ""; 702 pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p%s", 703 i, 704 le64_to_cpu((__force __le64)u0->a), 705 le64_to_cpu((__force __le64)u0->b), 706 (u64)dma_unmap_addr(tx_buffer, dma), 707 dma_unmap_len(tx_buffer, len), 708 tx_buffer->next_to_watch, 709 (u64)tx_buffer->time_stamp, 710 tx_buffer->skb, 711 ring_desc); 712 713 if (netif_msg_pktdata(adapter) && 714 tx_buffer->skb) 715 print_hex_dump(KERN_INFO, "", 716 DUMP_PREFIX_ADDRESS, 16, 1, 717 tx_buffer->skb->data, 718 dma_unmap_len(tx_buffer, len), 719 true); 720 } 721 } 722 } 723 724 /* Print RX Rings Summary */ 725 rx_ring_summary: 726 dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); 727 pr_info("Queue [NTU] [NTC]\n"); 728 for (n = 0; n < adapter->num_rx_queues; n++) { 729 rx_ring = adapter->rx_ring[n]; 730 pr_info("%5d %5X %5X\n", 731 n, rx_ring->next_to_use, rx_ring->next_to_clean); 732 } 733 734 /* Print RX Rings */ 735 if (!netif_msg_rx_status(adapter)) 736 return; 737 738 dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); 739 740 /* Receive Descriptor Formats 741 * 742 * 82598 Advanced Receive Descriptor (Read) Format 743 * 63 1 0 744 * +-----------------------------------------------------+ 745 * 0 | Packet Buffer Address [63:1] |A0/NSE| 746 * +----------------------------------------------+------+ 747 * 8 | Header Buffer Address [63:1] | DD | 748 * +-----------------------------------------------------+ 749 * 750 * 751 * 82598 Advanced Receive Descriptor (Write-Back) Format 752 * 753 * 63 48 47 32 31 30 21 20 16 15 4 3 0 754 * +------------------------------------------------------+ 755 * 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS | 756 * | Packet | IP | | | | Type | Type | 757 * | Checksum | Ident | | | | | | 758 * +------------------------------------------------------+ 759 * 8 | VLAN Tag | Length | Extended Error | Extended Status | 760 * +------------------------------------------------------+ 761 * 63 48 47 32 31 20 19 0 762 * 763 * 82599+ Advanced Receive Descriptor (Read) Format 764 * 63 1 0 765 * +-----------------------------------------------------+ 766 * 0 | Packet Buffer Address [63:1] |A0/NSE| 767 * +----------------------------------------------+------+ 768 * 8 | Header Buffer Address [63:1] | DD | 769 * +-----------------------------------------------------+ 770 * 771 * 772 * 82599+ Advanced Receive Descriptor (Write-Back) Format 773 * 774 * 63 48 47 32 31 30 21 20 17 16 4 3 0 775 * +------------------------------------------------------+ 776 * 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS | 777 * |/ RTT / PCoE_PARAM | | | CNT | Type | Type | 778 * |/ Flow Dir Flt ID | | | | | | 779 * +------------------------------------------------------+ 780 * 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP | 781 * +------------------------------------------------------+ 782 * 63 48 47 32 31 20 19 0 783 */ 784 785 for (n = 0; n < adapter->num_rx_queues; n++) { 786 rx_ring = adapter->rx_ring[n]; 787 pr_info("------------------------------------\n"); 788 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index); 789 pr_info("------------------------------------\n"); 790 pr_info("%s%s%s\n", 791 "R [desc] [ PktBuf A0] ", 792 "[ HeadBuf DD] [bi->dma ] [bi->skb ] ", 793 "<-- Adv Rx Read format"); 794 pr_info("%s%s%s\n", 795 "RWB[desc] [PcsmIpSHl PtRs] ", 796 "[vl er S cks ln] ---------------- [bi->skb ] ", 797 "<-- Adv Rx Write-Back format"); 798 799 for (i = 0; i < rx_ring->count; i++) { 800 const char *ring_desc; 801 802 if (i == rx_ring->next_to_use) 803 ring_desc = " NTU"; 804 else if (i == rx_ring->next_to_clean) 805 ring_desc = " NTC"; 806 else 807 ring_desc = ""; 808 809 rx_buffer_info = &rx_ring->rx_buffer_info[i]; 810 rx_desc = IXGBE_RX_DESC(rx_ring, i); 811 u0 = (struct my_u0 *)rx_desc; 812 if (rx_desc->wb.upper.length) { 813 /* Descriptor Done */ 814 pr_info("RWB[0x%03X] %016llX %016llX ---------------- %p%s\n", 815 i, 816 le64_to_cpu((__force __le64)u0->a), 817 le64_to_cpu((__force __le64)u0->b), 818 rx_buffer_info->skb, 819 ring_desc); 820 } else { 821 pr_info("R [0x%03X] %016llX %016llX %016llX %p%s\n", 822 i, 823 le64_to_cpu((__force __le64)u0->a), 824 le64_to_cpu((__force __le64)u0->b), 825 (u64)rx_buffer_info->dma, 826 rx_buffer_info->skb, 827 ring_desc); 828 829 if (netif_msg_pktdata(adapter) && 830 rx_buffer_info->dma) { 831 print_hex_dump(KERN_INFO, "", 832 DUMP_PREFIX_ADDRESS, 16, 1, 833 page_address(rx_buffer_info->page) + 834 rx_buffer_info->page_offset, 835 ixgbe_rx_bufsz(rx_ring), true); 836 } 837 } 838 } 839 } 840 } 841 842 static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) 843 { 844 u32 ctrl_ext; 845 846 /* Let firmware take over control of h/w */ 847 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); 848 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, 849 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); 850 } 851 852 static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) 853 { 854 u32 ctrl_ext; 855 856 /* Let firmware know the driver has taken over */ 857 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); 858 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, 859 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); 860 } 861 862 /** 863 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors 864 * @adapter: pointer to adapter struct 865 * @direction: 0 for Rx, 1 for Tx, -1 for other causes 866 * @queue: queue to map the corresponding interrupt to 867 * @msix_vector: the vector to map to the corresponding queue 868 * 869 */ 870 static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction, 871 u8 queue, u8 msix_vector) 872 { 873 u32 ivar, index; 874 struct ixgbe_hw *hw = &adapter->hw; 875 switch (hw->mac.type) { 876 case ixgbe_mac_82598EB: 877 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 878 if (direction == -1) 879 direction = 0; 880 index = (((direction * 64) + queue) >> 2) & 0x1F; 881 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index)); 882 ivar &= ~(0xFF << (8 * (queue & 0x3))); 883 ivar |= (msix_vector << (8 * (queue & 0x3))); 884 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar); 885 break; 886 case ixgbe_mac_82599EB: 887 case ixgbe_mac_X540: 888 case ixgbe_mac_X550: 889 case ixgbe_mac_X550EM_x: 890 case ixgbe_mac_x550em_a: 891 case ixgbe_mac_e610: 892 if (direction == -1) { 893 /* other causes */ 894 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 895 index = ((queue & 1) * 8); 896 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC); 897 ivar &= ~(0xFF << index); 898 ivar |= (msix_vector << index); 899 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar); 900 break; 901 } else { 902 /* tx or rx causes */ 903 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 904 index = ((16 * (queue & 1)) + (8 * direction)); 905 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1)); 906 ivar &= ~(0xFF << index); 907 ivar |= (msix_vector << index); 908 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar); 909 break; 910 } 911 default: 912 break; 913 } 914 } 915 916 void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter, 917 u64 qmask) 918 { 919 u32 mask; 920 921 switch (adapter->hw.mac.type) { 922 case ixgbe_mac_82598EB: 923 mask = (IXGBE_EIMS_RTX_QUEUE & qmask); 924 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask); 925 break; 926 case ixgbe_mac_82599EB: 927 case ixgbe_mac_X540: 928 case ixgbe_mac_X550: 929 case ixgbe_mac_X550EM_x: 930 case ixgbe_mac_x550em_a: 931 case ixgbe_mac_e610: 932 mask = (qmask & 0xFFFFFFFF); 933 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask); 934 mask = (qmask >> 32); 935 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask); 936 break; 937 default: 938 break; 939 } 940 } 941 942 static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter *adapter) 943 { 944 struct ixgbe_hw *hw = &adapter->hw; 945 struct ixgbe_hw_stats *hwstats = &adapter->stats; 946 int i; 947 u32 data; 948 949 if ((hw->fc.current_mode != ixgbe_fc_full) && 950 (hw->fc.current_mode != ixgbe_fc_rx_pause)) 951 return; 952 953 switch (hw->mac.type) { 954 case ixgbe_mac_82598EB: 955 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); 956 break; 957 default: 958 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); 959 } 960 hwstats->lxoffrxc += data; 961 962 /* refill credits (no tx hang) if we received xoff */ 963 if (!data) 964 return; 965 966 for (i = 0; i < adapter->num_tx_queues; i++) 967 clear_bit(__IXGBE_HANG_CHECK_ARMED, 968 &adapter->tx_ring[i]->state); 969 970 for (i = 0; i < adapter->num_xdp_queues; i++) 971 clear_bit(__IXGBE_HANG_CHECK_ARMED, 972 &adapter->xdp_ring[i]->state); 973 } 974 975 static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter) 976 { 977 struct ixgbe_hw *hw = &adapter->hw; 978 struct ixgbe_hw_stats *hwstats = &adapter->stats; 979 u32 xoff[8] = {0}; 980 u8 tc; 981 int i; 982 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 983 984 if (adapter->ixgbe_ieee_pfc) 985 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 986 987 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED) || !pfc_en) { 988 ixgbe_update_xoff_rx_lfc(adapter); 989 return; 990 } 991 992 /* update stats for each tc, only valid with PFC enabled */ 993 for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) { 994 u32 pxoffrxc; 995 996 switch (hw->mac.type) { 997 case ixgbe_mac_82598EB: 998 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); 999 break; 1000 default: 1001 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i)); 1002 } 1003 hwstats->pxoffrxc[i] += pxoffrxc; 1004 /* Get the TC for given UP */ 1005 tc = netdev_get_prio_tc_map(adapter->netdev, i); 1006 xoff[tc] += pxoffrxc; 1007 } 1008 1009 /* disarm tx queues that have received xoff frames */ 1010 for (i = 0; i < adapter->num_tx_queues; i++) { 1011 struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; 1012 1013 tc = tx_ring->dcb_tc; 1014 if (xoff[tc]) 1015 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); 1016 } 1017 1018 for (i = 0; i < adapter->num_xdp_queues; i++) { 1019 struct ixgbe_ring *xdp_ring = adapter->xdp_ring[i]; 1020 1021 tc = xdp_ring->dcb_tc; 1022 if (xoff[tc]) 1023 clear_bit(__IXGBE_HANG_CHECK_ARMED, &xdp_ring->state); 1024 } 1025 } 1026 1027 static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring) 1028 { 1029 return ring->stats.packets; 1030 } 1031 1032 static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring) 1033 { 1034 unsigned int head, tail; 1035 1036 head = ring->next_to_clean; 1037 tail = ring->next_to_use; 1038 1039 return ((head <= tail) ? tail : tail + ring->count) - head; 1040 } 1041 1042 static bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring) 1043 { 1044 u32 tx_done = ixgbe_get_tx_completed(tx_ring); 1045 u32 tx_done_old = tx_ring->tx_stats.tx_done_old; 1046 u32 tx_pending = ixgbe_get_tx_pending(tx_ring); 1047 1048 clear_check_for_tx_hang(tx_ring); 1049 1050 /* 1051 * Check for a hung queue, but be thorough. This verifies 1052 * that a transmit has been completed since the previous 1053 * check AND there is at least one packet pending. The 1054 * ARMED bit is set to indicate a potential hang. The 1055 * bit is cleared if a pause frame is received to remove 1056 * false hang detection due to PFC or 802.3x frames. By 1057 * requiring this to fail twice we avoid races with 1058 * pfc clearing the ARMED bit and conditions where we 1059 * run the check_tx_hang logic with a transmit completion 1060 * pending but without time to complete it yet. 1061 */ 1062 if (tx_done_old == tx_done && tx_pending) 1063 /* make sure it is true for two checks in a row */ 1064 return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED, 1065 &tx_ring->state); 1066 /* update completed stats and continue */ 1067 tx_ring->tx_stats.tx_done_old = tx_done; 1068 /* reset the countdown */ 1069 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); 1070 1071 return false; 1072 } 1073 1074 /** 1075 * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout 1076 * @adapter: driver private struct 1077 **/ 1078 static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter) 1079 { 1080 1081 /* Do the reset outside of interrupt context */ 1082 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 1083 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 1084 e_warn(drv, "initiating reset due to tx timeout\n"); 1085 ixgbe_service_event_schedule(adapter); 1086 } 1087 } 1088 1089 /** 1090 * ixgbe_tx_maxrate - callback to set the maximum per-queue bitrate 1091 * @netdev: network interface device structure 1092 * @queue_index: Tx queue to set 1093 * @maxrate: desired maximum transmit bitrate 1094 **/ 1095 static int ixgbe_tx_maxrate(struct net_device *netdev, 1096 int queue_index, u32 maxrate) 1097 { 1098 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1099 struct ixgbe_hw *hw = &adapter->hw; 1100 u32 bcnrc_val = ixgbe_link_mbps(adapter); 1101 1102 if (!maxrate) 1103 return 0; 1104 1105 /* Calculate the rate factor values to set */ 1106 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1107 bcnrc_val /= maxrate; 1108 1109 /* clear everything but the rate factor */ 1110 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1111 IXGBE_RTTBCNRC_RF_DEC_MASK; 1112 1113 /* enable the rate scheduler */ 1114 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1115 1116 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, queue_index); 1117 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1118 1119 return 0; 1120 } 1121 1122 /** 1123 * ixgbe_update_tx_ring_stats - Update Tx ring specific counters 1124 * @tx_ring: ring to update 1125 * @q_vector: queue vector ring belongs to 1126 * @pkts: number of processed packets 1127 * @bytes: number of processed bytes 1128 */ 1129 void ixgbe_update_tx_ring_stats(struct ixgbe_ring *tx_ring, 1130 struct ixgbe_q_vector *q_vector, u64 pkts, 1131 u64 bytes) 1132 { 1133 u64_stats_update_begin(&tx_ring->syncp); 1134 tx_ring->stats.bytes += bytes; 1135 tx_ring->stats.packets += pkts; 1136 u64_stats_update_end(&tx_ring->syncp); 1137 q_vector->tx.total_bytes += bytes; 1138 q_vector->tx.total_packets += pkts; 1139 } 1140 1141 /** 1142 * ixgbe_update_rx_ring_stats - Update Rx ring specific counters 1143 * @rx_ring: ring to update 1144 * @q_vector: queue vector ring belongs to 1145 * @pkts: number of processed packets 1146 * @bytes: number of processed bytes 1147 */ 1148 void ixgbe_update_rx_ring_stats(struct ixgbe_ring *rx_ring, 1149 struct ixgbe_q_vector *q_vector, u64 pkts, 1150 u64 bytes) 1151 { 1152 u64_stats_update_begin(&rx_ring->syncp); 1153 rx_ring->stats.bytes += bytes; 1154 rx_ring->stats.packets += pkts; 1155 u64_stats_update_end(&rx_ring->syncp); 1156 q_vector->rx.total_bytes += bytes; 1157 q_vector->rx.total_packets += pkts; 1158 } 1159 1160 /** 1161 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes 1162 * @q_vector: structure containing interrupt and ring information 1163 * @tx_ring: tx ring to clean 1164 * @napi_budget: Used to determine if we are in netpoll 1165 **/ 1166 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector, 1167 struct ixgbe_ring *tx_ring, int napi_budget) 1168 { 1169 struct ixgbe_adapter *adapter = q_vector->adapter; 1170 struct ixgbe_tx_buffer *tx_buffer; 1171 union ixgbe_adv_tx_desc *tx_desc; 1172 unsigned int total_bytes = 0, total_packets = 0, total_ipsec = 0; 1173 unsigned int budget = q_vector->tx.work_limit; 1174 unsigned int i = tx_ring->next_to_clean; 1175 struct netdev_queue *txq; 1176 1177 if (test_bit(__IXGBE_DOWN, &adapter->state)) 1178 return true; 1179 1180 tx_buffer = &tx_ring->tx_buffer_info[i]; 1181 tx_desc = IXGBE_TX_DESC(tx_ring, i); 1182 i -= tx_ring->count; 1183 1184 do { 1185 union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; 1186 1187 /* if next_to_watch is not set then there is no work pending */ 1188 if (!eop_desc) 1189 break; 1190 1191 /* prevent any other reads prior to eop_desc */ 1192 smp_rmb(); 1193 1194 /* if DD is not set pending work has not been completed */ 1195 if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD))) 1196 break; 1197 1198 /* clear next_to_watch to prevent false hangs */ 1199 tx_buffer->next_to_watch = NULL; 1200 1201 /* update the statistics for this packet */ 1202 total_bytes += tx_buffer->bytecount; 1203 total_packets += tx_buffer->gso_segs; 1204 if (tx_buffer->tx_flags & IXGBE_TX_FLAGS_IPSEC) 1205 total_ipsec++; 1206 1207 /* free the skb */ 1208 if (ring_is_xdp(tx_ring)) 1209 xdp_return_frame(tx_buffer->xdpf); 1210 else 1211 napi_consume_skb(tx_buffer->skb, napi_budget); 1212 1213 /* unmap skb header data */ 1214 dma_unmap_single(tx_ring->dev, 1215 dma_unmap_addr(tx_buffer, dma), 1216 dma_unmap_len(tx_buffer, len), 1217 DMA_TO_DEVICE); 1218 1219 /* clear tx_buffer data */ 1220 dma_unmap_len_set(tx_buffer, len, 0); 1221 1222 /* unmap remaining buffers */ 1223 while (tx_desc != eop_desc) { 1224 tx_buffer++; 1225 tx_desc++; 1226 i++; 1227 if (unlikely(!i)) { 1228 i -= tx_ring->count; 1229 tx_buffer = tx_ring->tx_buffer_info; 1230 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 1231 } 1232 1233 /* unmap any remaining paged data */ 1234 if (dma_unmap_len(tx_buffer, len)) { 1235 dma_unmap_page(tx_ring->dev, 1236 dma_unmap_addr(tx_buffer, dma), 1237 dma_unmap_len(tx_buffer, len), 1238 DMA_TO_DEVICE); 1239 dma_unmap_len_set(tx_buffer, len, 0); 1240 } 1241 } 1242 1243 /* move us one more past the eop_desc for start of next pkt */ 1244 tx_buffer++; 1245 tx_desc++; 1246 i++; 1247 if (unlikely(!i)) { 1248 i -= tx_ring->count; 1249 tx_buffer = tx_ring->tx_buffer_info; 1250 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 1251 } 1252 1253 /* issue prefetch for next Tx descriptor */ 1254 prefetch(tx_desc); 1255 1256 /* update budget accounting */ 1257 budget--; 1258 } while (likely(budget)); 1259 1260 i += tx_ring->count; 1261 tx_ring->next_to_clean = i; 1262 ixgbe_update_tx_ring_stats(tx_ring, q_vector, total_packets, 1263 total_bytes); 1264 adapter->tx_ipsec += total_ipsec; 1265 1266 if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) { 1267 /* schedule immediate reset if we believe we hung */ 1268 struct ixgbe_hw *hw = &adapter->hw; 1269 e_err(drv, "Detected Tx Unit Hang %s\n" 1270 " Tx Queue <%d>\n" 1271 " TDH, TDT <%x>, <%x>\n" 1272 " next_to_use <%x>\n" 1273 " next_to_clean <%x>\n" 1274 "tx_buffer_info[next_to_clean]\n" 1275 " time_stamp <%lx>\n" 1276 " jiffies <%lx>\n", 1277 ring_is_xdp(tx_ring) ? "(XDP)" : "", 1278 tx_ring->queue_index, 1279 IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)), 1280 IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)), 1281 tx_ring->next_to_use, i, 1282 tx_ring->tx_buffer_info[i].time_stamp, jiffies); 1283 1284 if (!ring_is_xdp(tx_ring)) 1285 netif_stop_subqueue(tx_ring->netdev, 1286 tx_ring->queue_index); 1287 1288 e_info(probe, 1289 "tx hang %d detected on queue %d, resetting adapter\n", 1290 adapter->tx_timeout_count + 1, tx_ring->queue_index); 1291 1292 /* schedule immediate reset if we believe we hung */ 1293 ixgbe_tx_timeout_reset(adapter); 1294 1295 /* the adapter is about to reset, no point in enabling stuff */ 1296 return true; 1297 } 1298 1299 if (ring_is_xdp(tx_ring)) 1300 return !!budget; 1301 1302 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) 1303 txq = netdev_get_tx_queue(tx_ring->netdev, tx_ring->queue_index); 1304 if (!__netif_txq_completed_wake(txq, total_packets, total_bytes, 1305 ixgbe_desc_unused(tx_ring), 1306 TX_WAKE_THRESHOLD, 1307 !netif_carrier_ok(tx_ring->netdev) || 1308 test_bit(__IXGBE_DOWN, &adapter->state))) 1309 ++tx_ring->tx_stats.restart_queue; 1310 1311 return !!budget; 1312 } 1313 1314 #ifdef CONFIG_IXGBE_DCA 1315 static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, 1316 struct ixgbe_ring *tx_ring, 1317 int cpu) 1318 { 1319 struct ixgbe_hw *hw = &adapter->hw; 1320 u32 txctrl = 0; 1321 u16 reg_offset; 1322 1323 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1324 txctrl = dca3_get_tag(tx_ring->dev, cpu); 1325 1326 switch (hw->mac.type) { 1327 case ixgbe_mac_82598EB: 1328 reg_offset = IXGBE_DCA_TXCTRL(tx_ring->reg_idx); 1329 break; 1330 case ixgbe_mac_82599EB: 1331 case ixgbe_mac_X540: 1332 reg_offset = IXGBE_DCA_TXCTRL_82599(tx_ring->reg_idx); 1333 txctrl <<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599; 1334 break; 1335 default: 1336 /* for unknown hardware do not write register */ 1337 return; 1338 } 1339 1340 /* 1341 * We can enable relaxed ordering for reads, but not writes when 1342 * DCA is enabled. This is due to a known issue in some chipsets 1343 * which will cause the DCA tag to be cleared. 1344 */ 1345 txctrl |= IXGBE_DCA_TXCTRL_DESC_RRO_EN | 1346 IXGBE_DCA_TXCTRL_DATA_RRO_EN | 1347 IXGBE_DCA_TXCTRL_DESC_DCA_EN; 1348 1349 IXGBE_WRITE_REG(hw, reg_offset, txctrl); 1350 } 1351 1352 static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter, 1353 struct ixgbe_ring *rx_ring, 1354 int cpu) 1355 { 1356 struct ixgbe_hw *hw = &adapter->hw; 1357 u32 rxctrl = 0; 1358 u8 reg_idx = rx_ring->reg_idx; 1359 1360 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1361 rxctrl = dca3_get_tag(rx_ring->dev, cpu); 1362 1363 switch (hw->mac.type) { 1364 case ixgbe_mac_82599EB: 1365 case ixgbe_mac_X540: 1366 rxctrl <<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599; 1367 break; 1368 default: 1369 break; 1370 } 1371 1372 /* 1373 * We can enable relaxed ordering for reads, but not writes when 1374 * DCA is enabled. This is due to a known issue in some chipsets 1375 * which will cause the DCA tag to be cleared. 1376 */ 1377 rxctrl |= IXGBE_DCA_RXCTRL_DESC_RRO_EN | 1378 IXGBE_DCA_RXCTRL_DATA_DCA_EN | 1379 IXGBE_DCA_RXCTRL_DESC_DCA_EN; 1380 1381 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl); 1382 } 1383 1384 static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector) 1385 { 1386 struct ixgbe_adapter *adapter = q_vector->adapter; 1387 struct ixgbe_ring *ring; 1388 int cpu = get_cpu(); 1389 1390 if (q_vector->cpu == cpu) 1391 goto out_no_update; 1392 1393 ixgbe_for_each_ring(ring, q_vector->tx) 1394 ixgbe_update_tx_dca(adapter, ring, cpu); 1395 1396 ixgbe_for_each_ring(ring, q_vector->rx) 1397 ixgbe_update_rx_dca(adapter, ring, cpu); 1398 1399 q_vector->cpu = cpu; 1400 out_no_update: 1401 put_cpu(); 1402 } 1403 1404 static void ixgbe_setup_dca(struct ixgbe_adapter *adapter) 1405 { 1406 int i; 1407 1408 /* always use CB2 mode, difference is masked in the CB driver */ 1409 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1410 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1411 IXGBE_DCA_CTRL_DCA_MODE_CB2); 1412 else 1413 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1414 IXGBE_DCA_CTRL_DCA_DISABLE); 1415 1416 for (i = 0; i < adapter->num_q_vectors; i++) { 1417 adapter->q_vector[i]->cpu = -1; 1418 ixgbe_update_dca(adapter->q_vector[i]); 1419 } 1420 } 1421 1422 static int __ixgbe_notify_dca(struct device *dev, void *data) 1423 { 1424 struct ixgbe_adapter *adapter = dev_get_drvdata(dev); 1425 unsigned long event = *(unsigned long *)data; 1426 1427 if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE)) 1428 return 0; 1429 1430 switch (event) { 1431 case DCA_PROVIDER_ADD: 1432 /* if we're already enabled, don't do it again */ 1433 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1434 break; 1435 if (dca_add_requester(dev) == 0) { 1436 adapter->flags |= IXGBE_FLAG_DCA_ENABLED; 1437 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1438 IXGBE_DCA_CTRL_DCA_MODE_CB2); 1439 break; 1440 } 1441 fallthrough; /* DCA is disabled. */ 1442 case DCA_PROVIDER_REMOVE: 1443 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { 1444 dca_remove_requester(dev); 1445 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; 1446 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1447 IXGBE_DCA_CTRL_DCA_DISABLE); 1448 } 1449 break; 1450 } 1451 1452 return 0; 1453 } 1454 1455 #endif /* CONFIG_IXGBE_DCA */ 1456 1457 #define IXGBE_RSS_L4_TYPES_MASK \ 1458 ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \ 1459 (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \ 1460 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \ 1461 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP)) 1462 1463 static inline void ixgbe_rx_hash(struct ixgbe_ring *ring, 1464 union ixgbe_adv_rx_desc *rx_desc, 1465 struct sk_buff *skb) 1466 { 1467 u16 rss_type; 1468 1469 if (!(ring->netdev->features & NETIF_F_RXHASH)) 1470 return; 1471 1472 rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) & 1473 IXGBE_RXDADV_RSSTYPE_MASK; 1474 1475 if (!rss_type) 1476 return; 1477 1478 skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), 1479 (IXGBE_RSS_L4_TYPES_MASK & (1ul << rss_type)) ? 1480 PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3); 1481 } 1482 1483 #ifdef IXGBE_FCOE 1484 /** 1485 * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type 1486 * @ring: structure containing ring specific data 1487 * @rx_desc: advanced rx descriptor 1488 * 1489 * Returns : true if it is FCoE pkt 1490 */ 1491 static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring *ring, 1492 union ixgbe_adv_rx_desc *rx_desc) 1493 { 1494 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; 1495 1496 return test_bit(__IXGBE_RX_FCOE, &ring->state) && 1497 ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) == 1498 (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE << 1499 IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT))); 1500 } 1501 1502 #endif /* IXGBE_FCOE */ 1503 /** 1504 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum 1505 * @ring: structure containing ring specific data 1506 * @rx_desc: current Rx descriptor being processed 1507 * @skb: skb currently being received and modified 1508 **/ 1509 static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring, 1510 union ixgbe_adv_rx_desc *rx_desc, 1511 struct sk_buff *skb) 1512 { 1513 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; 1514 bool encap_pkt = false; 1515 1516 skb_checksum_none_assert(skb); 1517 1518 /* Rx csum disabled */ 1519 if (!(ring->netdev->features & NETIF_F_RXCSUM)) 1520 return; 1521 1522 /* check for VXLAN and Geneve packets */ 1523 if (pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN)) { 1524 encap_pkt = true; 1525 skb->encapsulation = 1; 1526 } 1527 1528 /* if IP and error */ 1529 if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) && 1530 ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) { 1531 ring->rx_stats.csum_err++; 1532 return; 1533 } 1534 1535 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS)) 1536 return; 1537 1538 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) { 1539 /* 1540 * 82599 errata, UDP frames with a 0 checksum can be marked as 1541 * checksum errors. 1542 */ 1543 if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP)) && 1544 test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state)) 1545 return; 1546 1547 ring->rx_stats.csum_err++; 1548 return; 1549 } 1550 1551 /* It must be a TCP or UDP packet with a valid checksum */ 1552 skb->ip_summed = CHECKSUM_UNNECESSARY; 1553 if (encap_pkt) { 1554 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_OUTERIPCS)) 1555 return; 1556 1557 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_OUTERIPER)) { 1558 skb->ip_summed = CHECKSUM_NONE; 1559 return; 1560 } 1561 /* If we checked the outer header let the stack know */ 1562 skb->csum_level = 1; 1563 } 1564 } 1565 1566 static unsigned int ixgbe_rx_offset(struct ixgbe_ring *rx_ring) 1567 { 1568 return ring_uses_build_skb(rx_ring) ? IXGBE_SKB_PAD : 0; 1569 } 1570 1571 static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring, 1572 struct ixgbe_rx_buffer *bi) 1573 { 1574 struct page *page = bi->page; 1575 dma_addr_t dma; 1576 1577 /* since we are recycling buffers we should seldom need to alloc */ 1578 if (likely(page)) 1579 return true; 1580 1581 /* alloc new page for storage */ 1582 page = dev_alloc_pages(ixgbe_rx_pg_order(rx_ring)); 1583 if (unlikely(!page)) { 1584 rx_ring->rx_stats.alloc_rx_page_failed++; 1585 return false; 1586 } 1587 1588 /* map page for use */ 1589 dma = dma_map_page_attrs(rx_ring->dev, page, 0, 1590 ixgbe_rx_pg_size(rx_ring), 1591 DMA_FROM_DEVICE, 1592 IXGBE_RX_DMA_ATTR); 1593 1594 /* 1595 * if mapping failed free memory back to system since 1596 * there isn't much point in holding memory we can't use 1597 */ 1598 if (dma_mapping_error(rx_ring->dev, dma)) { 1599 __free_pages(page, ixgbe_rx_pg_order(rx_ring)); 1600 1601 rx_ring->rx_stats.alloc_rx_page_failed++; 1602 return false; 1603 } 1604 1605 bi->dma = dma; 1606 bi->page = page; 1607 bi->page_offset = rx_ring->rx_offset; 1608 page_ref_add(page, USHRT_MAX - 1); 1609 bi->pagecnt_bias = USHRT_MAX; 1610 rx_ring->rx_stats.alloc_rx_page++; 1611 1612 return true; 1613 } 1614 1615 /** 1616 * ixgbe_alloc_rx_buffers - Replace used receive buffers 1617 * @rx_ring: ring to place buffers on 1618 * @cleaned_count: number of buffers to replace 1619 **/ 1620 void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count) 1621 { 1622 union ixgbe_adv_rx_desc *rx_desc; 1623 struct ixgbe_rx_buffer *bi; 1624 u16 i = rx_ring->next_to_use; 1625 u16 bufsz; 1626 1627 /* nothing to do */ 1628 if (!cleaned_count) 1629 return; 1630 1631 rx_desc = IXGBE_RX_DESC(rx_ring, i); 1632 bi = &rx_ring->rx_buffer_info[i]; 1633 i -= rx_ring->count; 1634 1635 bufsz = ixgbe_rx_bufsz(rx_ring); 1636 1637 do { 1638 if (!ixgbe_alloc_mapped_page(rx_ring, bi)) 1639 break; 1640 1641 /* sync the buffer for use by the device */ 1642 dma_sync_single_range_for_device(rx_ring->dev, bi->dma, 1643 bi->page_offset, bufsz, 1644 DMA_FROM_DEVICE); 1645 1646 /* 1647 * Refresh the desc even if buffer_addrs didn't change 1648 * because each write-back erases this info. 1649 */ 1650 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); 1651 1652 rx_desc++; 1653 bi++; 1654 i++; 1655 if (unlikely(!i)) { 1656 rx_desc = IXGBE_RX_DESC(rx_ring, 0); 1657 bi = rx_ring->rx_buffer_info; 1658 i -= rx_ring->count; 1659 } 1660 1661 /* clear the length for the next_to_use descriptor */ 1662 rx_desc->wb.upper.length = 0; 1663 1664 cleaned_count--; 1665 } while (cleaned_count); 1666 1667 i += rx_ring->count; 1668 1669 if (rx_ring->next_to_use != i) { 1670 rx_ring->next_to_use = i; 1671 1672 /* update next to alloc since we have filled the ring */ 1673 rx_ring->next_to_alloc = i; 1674 1675 /* Force memory writes to complete before letting h/w 1676 * know there are new descriptors to fetch. (Only 1677 * applicable for weak-ordered memory model archs, 1678 * such as IA-64). 1679 */ 1680 wmb(); 1681 writel(i, rx_ring->tail); 1682 } 1683 } 1684 1685 static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring, 1686 struct sk_buff *skb) 1687 { 1688 u16 hdr_len = skb_headlen(skb); 1689 1690 /* set gso_size to avoid messing up TCP MSS */ 1691 skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len), 1692 IXGBE_CB(skb)->append_cnt); 1693 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; 1694 } 1695 1696 static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring, 1697 struct sk_buff *skb) 1698 { 1699 /* if append_cnt is 0 then frame is not RSC */ 1700 if (!IXGBE_CB(skb)->append_cnt) 1701 return; 1702 1703 rx_ring->rx_stats.rsc_count += IXGBE_CB(skb)->append_cnt; 1704 rx_ring->rx_stats.rsc_flush++; 1705 1706 ixgbe_set_rsc_gso_size(rx_ring, skb); 1707 1708 /* gso_size is computed using append_cnt so always clear it last */ 1709 IXGBE_CB(skb)->append_cnt = 0; 1710 } 1711 1712 /** 1713 * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor 1714 * @rx_ring: rx descriptor ring packet is being transacted on 1715 * @rx_desc: pointer to the EOP Rx descriptor 1716 * @skb: pointer to current skb being populated 1717 * 1718 * This function checks the ring, descriptor, and packet information in 1719 * order to populate the hash, checksum, VLAN, timestamp, protocol, and 1720 * other fields within the skb. 1721 **/ 1722 void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring, 1723 union ixgbe_adv_rx_desc *rx_desc, 1724 struct sk_buff *skb) 1725 { 1726 struct net_device *dev = rx_ring->netdev; 1727 u32 flags = rx_ring->q_vector->adapter->flags; 1728 1729 ixgbe_update_rsc_stats(rx_ring, skb); 1730 1731 ixgbe_rx_hash(rx_ring, rx_desc, skb); 1732 1733 ixgbe_rx_checksum(rx_ring, rx_desc, skb); 1734 1735 if (unlikely(flags & IXGBE_FLAG_RX_HWTSTAMP_ENABLED)) 1736 ixgbe_ptp_rx_hwtstamp(rx_ring, rx_desc, skb); 1737 1738 if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && 1739 ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) { 1740 u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan); 1741 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); 1742 } 1743 1744 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_STAT_SECP)) 1745 ixgbe_ipsec_rx(rx_ring, rx_desc, skb); 1746 1747 /* record Rx queue, or update MACVLAN statistics */ 1748 if (netif_is_ixgbe(dev)) 1749 skb_record_rx_queue(skb, rx_ring->queue_index); 1750 else 1751 macvlan_count_rx(netdev_priv(dev), skb->len + ETH_HLEN, true, 1752 false); 1753 1754 skb->protocol = eth_type_trans(skb, dev); 1755 } 1756 1757 void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector, 1758 struct sk_buff *skb) 1759 { 1760 napi_gro_receive(&q_vector->napi, skb); 1761 } 1762 1763 /** 1764 * ixgbe_is_non_eop - process handling of non-EOP buffers 1765 * @rx_ring: Rx ring being processed 1766 * @rx_desc: Rx descriptor for current buffer 1767 * @skb: Current socket buffer containing buffer in progress 1768 * 1769 * This function updates next to clean. If the buffer is an EOP buffer 1770 * this function exits returning false, otherwise it will place the 1771 * sk_buff in the next buffer to be chained and return true indicating 1772 * that this is in fact a non-EOP buffer. 1773 **/ 1774 static bool ixgbe_is_non_eop(struct ixgbe_ring *rx_ring, 1775 union ixgbe_adv_rx_desc *rx_desc, 1776 struct sk_buff *skb) 1777 { 1778 u32 ntc = rx_ring->next_to_clean + 1; 1779 1780 /* fetch, update, and store next to clean */ 1781 ntc = (ntc < rx_ring->count) ? ntc : 0; 1782 rx_ring->next_to_clean = ntc; 1783 1784 prefetch(IXGBE_RX_DESC(rx_ring, ntc)); 1785 1786 /* update RSC append count if present */ 1787 if (ring_is_rsc_enabled(rx_ring)) { 1788 __le32 rsc_enabled = rx_desc->wb.lower.lo_dword.data & 1789 cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK); 1790 1791 if (unlikely(rsc_enabled)) { 1792 u32 rsc_cnt = le32_to_cpu(rsc_enabled); 1793 1794 rsc_cnt >>= IXGBE_RXDADV_RSCCNT_SHIFT; 1795 IXGBE_CB(skb)->append_cnt += rsc_cnt - 1; 1796 1797 /* update ntc based on RSC value */ 1798 ntc = le32_to_cpu(rx_desc->wb.upper.status_error); 1799 ntc &= IXGBE_RXDADV_NEXTP_MASK; 1800 ntc >>= IXGBE_RXDADV_NEXTP_SHIFT; 1801 } 1802 } 1803 1804 /* if we are the last buffer then there is nothing else to do */ 1805 if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))) 1806 return false; 1807 1808 /* place skb in next buffer to be received */ 1809 rx_ring->rx_buffer_info[ntc].skb = skb; 1810 rx_ring->rx_stats.non_eop_descs++; 1811 1812 return true; 1813 } 1814 1815 /** 1816 * ixgbe_pull_tail - ixgbe specific version of skb_pull_tail 1817 * @rx_ring: rx descriptor ring packet is being transacted on 1818 * @skb: pointer to current skb being adjusted 1819 * 1820 * This function is an ixgbe specific version of __pskb_pull_tail. The 1821 * main difference between this version and the original function is that 1822 * this function can make several assumptions about the state of things 1823 * that allow for significant optimizations versus the standard function. 1824 * As a result we can do things like drop a frag and maintain an accurate 1825 * truesize for the skb. 1826 */ 1827 static void ixgbe_pull_tail(struct ixgbe_ring *rx_ring, 1828 struct sk_buff *skb) 1829 { 1830 skb_frag_t *frag = &skb_shinfo(skb)->frags[0]; 1831 unsigned char *va; 1832 unsigned int pull_len; 1833 1834 /* 1835 * it is valid to use page_address instead of kmap since we are 1836 * working with pages allocated out of the lomem pool per 1837 * alloc_page(GFP_ATOMIC) 1838 */ 1839 va = skb_frag_address(frag); 1840 1841 /* 1842 * we need the header to contain the greater of either ETH_HLEN or 1843 * 60 bytes if the skb->len is less than 60 for skb_pad. 1844 */ 1845 pull_len = eth_get_headlen(skb->dev, va, IXGBE_RX_HDR_SIZE); 1846 1847 /* align pull length to size of long to optimize memcpy performance */ 1848 skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long))); 1849 1850 /* update all of the pointers */ 1851 skb_frag_size_sub(frag, pull_len); 1852 skb_frag_off_add(frag, pull_len); 1853 skb->data_len -= pull_len; 1854 skb->tail += pull_len; 1855 } 1856 1857 /** 1858 * ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB 1859 * @rx_ring: rx descriptor ring packet is being transacted on 1860 * @skb: pointer to current skb being updated 1861 * 1862 * This function provides a basic DMA sync up for the first fragment of an 1863 * skb. The reason for doing this is that the first fragment cannot be 1864 * unmapped until we have reached the end of packet descriptor for a buffer 1865 * chain. 1866 */ 1867 static void ixgbe_dma_sync_frag(struct ixgbe_ring *rx_ring, 1868 struct sk_buff *skb) 1869 { 1870 if (ring_uses_build_skb(rx_ring)) { 1871 unsigned long mask = (unsigned long)ixgbe_rx_pg_size(rx_ring) - 1; 1872 unsigned long offset = (unsigned long)(skb->data) & mask; 1873 1874 dma_sync_single_range_for_cpu(rx_ring->dev, 1875 IXGBE_CB(skb)->dma, 1876 offset, 1877 skb_headlen(skb), 1878 DMA_FROM_DEVICE); 1879 } else { 1880 skb_frag_t *frag = &skb_shinfo(skb)->frags[0]; 1881 1882 dma_sync_single_range_for_cpu(rx_ring->dev, 1883 IXGBE_CB(skb)->dma, 1884 skb_frag_off(frag), 1885 skb_frag_size(frag), 1886 DMA_FROM_DEVICE); 1887 } 1888 1889 /* If the page was released, just unmap it. */ 1890 if (unlikely(IXGBE_CB(skb)->page_released)) { 1891 dma_unmap_page_attrs(rx_ring->dev, IXGBE_CB(skb)->dma, 1892 ixgbe_rx_pg_size(rx_ring), 1893 DMA_FROM_DEVICE, 1894 IXGBE_RX_DMA_ATTR); 1895 } 1896 } 1897 1898 /** 1899 * ixgbe_cleanup_headers - Correct corrupted or empty headers 1900 * @rx_ring: rx descriptor ring packet is being transacted on 1901 * @rx_desc: pointer to the EOP Rx descriptor 1902 * @skb: pointer to current skb being fixed 1903 * 1904 * Check if the skb is valid in the XDP case it will be an error pointer. 1905 * Return true in this case to abort processing and advance to next 1906 * descriptor. 1907 * 1908 * Check for corrupted packet headers caused by senders on the local L2 1909 * embedded NIC switch not setting up their Tx Descriptors right. These 1910 * should be very rare. 1911 * 1912 * Also address the case where we are pulling data in on pages only 1913 * and as such no data is present in the skb header. 1914 * 1915 * In addition if skb is not at least 60 bytes we need to pad it so that 1916 * it is large enough to qualify as a valid Ethernet frame. 1917 * 1918 * Returns true if an error was encountered and skb was freed. 1919 **/ 1920 bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring, 1921 union ixgbe_adv_rx_desc *rx_desc, 1922 struct sk_buff *skb) 1923 { 1924 struct net_device *netdev = rx_ring->netdev; 1925 1926 /* XDP packets use error pointer so abort at this point */ 1927 if (IS_ERR(skb)) 1928 return true; 1929 1930 /* Verify netdev is present, and that packet does not have any 1931 * errors that would be unacceptable to the netdev. 1932 */ 1933 if (!netdev || 1934 (unlikely(ixgbe_test_staterr(rx_desc, 1935 IXGBE_RXDADV_ERR_FRAME_ERR_MASK) && 1936 !(netdev->features & NETIF_F_RXALL)))) { 1937 dev_kfree_skb_any(skb); 1938 return true; 1939 } 1940 1941 /* place header in linear portion of buffer */ 1942 if (!skb_headlen(skb)) 1943 ixgbe_pull_tail(rx_ring, skb); 1944 1945 #ifdef IXGBE_FCOE 1946 /* do not attempt to pad FCoE Frames as this will disrupt DDP */ 1947 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) 1948 return false; 1949 1950 #endif 1951 /* if eth_skb_pad returns an error the skb was freed */ 1952 if (eth_skb_pad(skb)) 1953 return true; 1954 1955 return false; 1956 } 1957 1958 /** 1959 * ixgbe_reuse_rx_page - page flip buffer and store it back on the ring 1960 * @rx_ring: rx descriptor ring to store buffers on 1961 * @old_buff: donor buffer to have page reused 1962 * 1963 * Synchronizes page for reuse by the adapter 1964 **/ 1965 static void ixgbe_reuse_rx_page(struct ixgbe_ring *rx_ring, 1966 struct ixgbe_rx_buffer *old_buff) 1967 { 1968 struct ixgbe_rx_buffer *new_buff; 1969 u16 nta = rx_ring->next_to_alloc; 1970 1971 new_buff = &rx_ring->rx_buffer_info[nta]; 1972 1973 /* update, and store next to alloc */ 1974 nta++; 1975 rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; 1976 1977 /* Transfer page from old buffer to new buffer. 1978 * Move each member individually to avoid possible store 1979 * forwarding stalls and unnecessary copy of skb. 1980 */ 1981 new_buff->dma = old_buff->dma; 1982 new_buff->page = old_buff->page; 1983 new_buff->page_offset = old_buff->page_offset; 1984 new_buff->pagecnt_bias = old_buff->pagecnt_bias; 1985 } 1986 1987 static bool ixgbe_can_reuse_rx_page(struct ixgbe_rx_buffer *rx_buffer, 1988 int rx_buffer_pgcnt) 1989 { 1990 unsigned int pagecnt_bias = rx_buffer->pagecnt_bias; 1991 struct page *page = rx_buffer->page; 1992 1993 /* avoid re-using remote and pfmemalloc pages */ 1994 if (!dev_page_is_reusable(page)) 1995 return false; 1996 1997 #if (PAGE_SIZE < 8192) 1998 /* if we are only owner of page we can reuse it */ 1999 if (unlikely((rx_buffer_pgcnt - pagecnt_bias) > 1)) 2000 return false; 2001 #else 2002 /* The last offset is a bit aggressive in that we assume the 2003 * worst case of FCoE being enabled and using a 3K buffer. 2004 * However this should have minimal impact as the 1K extra is 2005 * still less than one buffer in size. 2006 */ 2007 #define IXGBE_LAST_OFFSET \ 2008 (SKB_WITH_OVERHEAD(PAGE_SIZE) - IXGBE_RXBUFFER_3K) 2009 if (rx_buffer->page_offset > IXGBE_LAST_OFFSET) 2010 return false; 2011 #endif 2012 2013 /* If we have drained the page fragment pool we need to update 2014 * the pagecnt_bias and page count so that we fully restock the 2015 * number of references the driver holds. 2016 */ 2017 if (unlikely(pagecnt_bias == 1)) { 2018 page_ref_add(page, USHRT_MAX - 1); 2019 rx_buffer->pagecnt_bias = USHRT_MAX; 2020 } 2021 2022 return true; 2023 } 2024 2025 /** 2026 * ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff 2027 * @rx_ring: rx descriptor ring to transact packets on 2028 * @rx_buffer: buffer containing page to add 2029 * @skb: sk_buff to place the data into 2030 * @size: size of data in rx_buffer 2031 * 2032 * This function will add the data contained in rx_buffer->page to the skb. 2033 * This is done either through a direct copy if the data in the buffer is 2034 * less than the skb header size, otherwise it will just attach the page as 2035 * a frag to the skb. 2036 * 2037 * The function will then update the page offset if necessary and return 2038 * true if the buffer can be reused by the adapter. 2039 **/ 2040 static void ixgbe_add_rx_frag(struct ixgbe_ring *rx_ring, 2041 struct ixgbe_rx_buffer *rx_buffer, 2042 struct sk_buff *skb, 2043 unsigned int size) 2044 { 2045 #if (PAGE_SIZE < 8192) 2046 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2047 #else 2048 unsigned int truesize = rx_ring->rx_offset ? 2049 SKB_DATA_ALIGN(rx_ring->rx_offset + size) : 2050 SKB_DATA_ALIGN(size); 2051 #endif 2052 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buffer->page, 2053 rx_buffer->page_offset, size, truesize); 2054 #if (PAGE_SIZE < 8192) 2055 rx_buffer->page_offset ^= truesize; 2056 #else 2057 rx_buffer->page_offset += truesize; 2058 #endif 2059 } 2060 2061 static struct ixgbe_rx_buffer *ixgbe_get_rx_buffer(struct ixgbe_ring *rx_ring, 2062 union ixgbe_adv_rx_desc *rx_desc, 2063 struct sk_buff **skb, 2064 const unsigned int size, 2065 int *rx_buffer_pgcnt) 2066 { 2067 struct ixgbe_rx_buffer *rx_buffer; 2068 2069 rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; 2070 *rx_buffer_pgcnt = 2071 #if (PAGE_SIZE < 8192) 2072 page_count(rx_buffer->page); 2073 #else 2074 0; 2075 #endif 2076 prefetchw(rx_buffer->page); 2077 *skb = rx_buffer->skb; 2078 2079 /* Delay unmapping of the first packet. It carries the header 2080 * information, HW may still access the header after the writeback. 2081 * Only unmap it when EOP is reached 2082 */ 2083 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) { 2084 if (!*skb) 2085 goto skip_sync; 2086 } else { 2087 if (*skb) 2088 ixgbe_dma_sync_frag(rx_ring, *skb); 2089 } 2090 2091 /* we are reusing so sync this buffer for CPU use */ 2092 dma_sync_single_range_for_cpu(rx_ring->dev, 2093 rx_buffer->dma, 2094 rx_buffer->page_offset, 2095 size, 2096 DMA_FROM_DEVICE); 2097 skip_sync: 2098 rx_buffer->pagecnt_bias--; 2099 2100 return rx_buffer; 2101 } 2102 2103 static void ixgbe_put_rx_buffer(struct ixgbe_ring *rx_ring, 2104 struct ixgbe_rx_buffer *rx_buffer, 2105 struct sk_buff *skb, 2106 int rx_buffer_pgcnt) 2107 { 2108 if (ixgbe_can_reuse_rx_page(rx_buffer, rx_buffer_pgcnt)) { 2109 /* hand second half of page back to the ring */ 2110 ixgbe_reuse_rx_page(rx_ring, rx_buffer); 2111 } else { 2112 if (!IS_ERR(skb) && IXGBE_CB(skb)->dma == rx_buffer->dma) { 2113 /* the page has been released from the ring */ 2114 IXGBE_CB(skb)->page_released = true; 2115 } else { 2116 /* we are not reusing the buffer so unmap it */ 2117 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, 2118 ixgbe_rx_pg_size(rx_ring), 2119 DMA_FROM_DEVICE, 2120 IXGBE_RX_DMA_ATTR); 2121 } 2122 __page_frag_cache_drain(rx_buffer->page, 2123 rx_buffer->pagecnt_bias); 2124 } 2125 2126 /* clear contents of rx_buffer */ 2127 rx_buffer->page = NULL; 2128 rx_buffer->skb = NULL; 2129 } 2130 2131 static struct sk_buff *ixgbe_construct_skb(struct ixgbe_ring *rx_ring, 2132 struct ixgbe_rx_buffer *rx_buffer, 2133 struct xdp_buff *xdp, 2134 union ixgbe_adv_rx_desc *rx_desc) 2135 { 2136 unsigned int size = xdp->data_end - xdp->data; 2137 #if (PAGE_SIZE < 8192) 2138 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2139 #else 2140 unsigned int truesize = SKB_DATA_ALIGN(xdp->data_end - 2141 xdp->data_hard_start); 2142 #endif 2143 struct sk_buff *skb; 2144 2145 /* prefetch first cache line of first page */ 2146 net_prefetch(xdp->data); 2147 2148 /* Note, we get here by enabling legacy-rx via: 2149 * 2150 * ethtool --set-priv-flags <dev> legacy-rx on 2151 * 2152 * In this mode, we currently get 0 extra XDP headroom as 2153 * opposed to having legacy-rx off, where we process XDP 2154 * packets going to stack via ixgbe_build_skb(). The latter 2155 * provides us currently with 192 bytes of headroom. 2156 * 2157 * For ixgbe_construct_skb() mode it means that the 2158 * xdp->data_meta will always point to xdp->data, since 2159 * the helper cannot expand the head. Should this ever 2160 * change in future for legacy-rx mode on, then lets also 2161 * add xdp->data_meta handling here. 2162 */ 2163 2164 /* allocate a skb to store the frags */ 2165 skb = napi_alloc_skb(&rx_ring->q_vector->napi, IXGBE_RX_HDR_SIZE); 2166 if (unlikely(!skb)) 2167 return NULL; 2168 2169 if (size > IXGBE_RX_HDR_SIZE) { 2170 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) 2171 IXGBE_CB(skb)->dma = rx_buffer->dma; 2172 2173 skb_add_rx_frag(skb, 0, rx_buffer->page, 2174 xdp->data - page_address(rx_buffer->page), 2175 size, truesize); 2176 #if (PAGE_SIZE < 8192) 2177 rx_buffer->page_offset ^= truesize; 2178 #else 2179 rx_buffer->page_offset += truesize; 2180 #endif 2181 } else { 2182 memcpy(__skb_put(skb, size), 2183 xdp->data, ALIGN(size, sizeof(long))); 2184 rx_buffer->pagecnt_bias++; 2185 } 2186 2187 return skb; 2188 } 2189 2190 static struct sk_buff *ixgbe_build_skb(struct ixgbe_ring *rx_ring, 2191 struct ixgbe_rx_buffer *rx_buffer, 2192 struct xdp_buff *xdp, 2193 union ixgbe_adv_rx_desc *rx_desc) 2194 { 2195 unsigned int metasize = xdp->data - xdp->data_meta; 2196 #if (PAGE_SIZE < 8192) 2197 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2198 #else 2199 unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + 2200 SKB_DATA_ALIGN(xdp->data_end - 2201 xdp->data_hard_start); 2202 #endif 2203 struct sk_buff *skb; 2204 2205 /* Prefetch first cache line of first page. If xdp->data_meta 2206 * is unused, this points extactly as xdp->data, otherwise we 2207 * likely have a consumer accessing first few bytes of meta 2208 * data, and then actual data. 2209 */ 2210 net_prefetch(xdp->data_meta); 2211 2212 /* build an skb to around the page buffer */ 2213 skb = napi_build_skb(xdp->data_hard_start, truesize); 2214 if (unlikely(!skb)) 2215 return NULL; 2216 2217 /* update pointers within the skb to store the data */ 2218 skb_reserve(skb, xdp->data - xdp->data_hard_start); 2219 __skb_put(skb, xdp->data_end - xdp->data); 2220 if (metasize) 2221 skb_metadata_set(skb, metasize); 2222 2223 /* record DMA address if this is the start of a chain of buffers */ 2224 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) 2225 IXGBE_CB(skb)->dma = rx_buffer->dma; 2226 2227 /* update buffer offset */ 2228 #if (PAGE_SIZE < 8192) 2229 rx_buffer->page_offset ^= truesize; 2230 #else 2231 rx_buffer->page_offset += truesize; 2232 #endif 2233 2234 return skb; 2235 } 2236 2237 static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter, 2238 struct ixgbe_ring *rx_ring, 2239 struct xdp_buff *xdp) 2240 { 2241 int err, result = IXGBE_XDP_PASS; 2242 struct bpf_prog *xdp_prog; 2243 struct ixgbe_ring *ring; 2244 struct xdp_frame *xdpf; 2245 u32 act; 2246 2247 xdp_prog = READ_ONCE(rx_ring->xdp_prog); 2248 2249 if (!xdp_prog) 2250 goto xdp_out; 2251 2252 prefetchw(xdp->data_hard_start); /* xdp_frame write */ 2253 2254 act = bpf_prog_run_xdp(xdp_prog, xdp); 2255 switch (act) { 2256 case XDP_PASS: 2257 break; 2258 case XDP_TX: 2259 xdpf = xdp_convert_buff_to_frame(xdp); 2260 if (unlikely(!xdpf)) 2261 goto out_failure; 2262 ring = ixgbe_determine_xdp_ring(adapter); 2263 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 2264 spin_lock(&ring->tx_lock); 2265 result = ixgbe_xmit_xdp_ring(ring, xdpf); 2266 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 2267 spin_unlock(&ring->tx_lock); 2268 if (result == IXGBE_XDP_CONSUMED) 2269 goto out_failure; 2270 break; 2271 case XDP_REDIRECT: 2272 err = xdp_do_redirect(adapter->netdev, xdp, xdp_prog); 2273 if (err) 2274 goto out_failure; 2275 result = IXGBE_XDP_REDIR; 2276 break; 2277 default: 2278 bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act); 2279 fallthrough; 2280 case XDP_ABORTED: 2281 out_failure: 2282 trace_xdp_exception(rx_ring->netdev, xdp_prog, act); 2283 fallthrough; /* handle aborts by dropping packet */ 2284 case XDP_DROP: 2285 result = IXGBE_XDP_CONSUMED; 2286 break; 2287 } 2288 xdp_out: 2289 return ERR_PTR(-result); 2290 } 2291 2292 static unsigned int ixgbe_rx_frame_truesize(struct ixgbe_ring *rx_ring, 2293 unsigned int size) 2294 { 2295 unsigned int truesize; 2296 2297 #if (PAGE_SIZE < 8192) 2298 truesize = ixgbe_rx_pg_size(rx_ring) / 2; /* Must be power-of-2 */ 2299 #else 2300 truesize = rx_ring->rx_offset ? 2301 SKB_DATA_ALIGN(rx_ring->rx_offset + size) + 2302 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) : 2303 SKB_DATA_ALIGN(size); 2304 #endif 2305 return truesize; 2306 } 2307 2308 static void ixgbe_rx_buffer_flip(struct ixgbe_ring *rx_ring, 2309 struct ixgbe_rx_buffer *rx_buffer, 2310 unsigned int size) 2311 { 2312 unsigned int truesize = ixgbe_rx_frame_truesize(rx_ring, size); 2313 #if (PAGE_SIZE < 8192) 2314 rx_buffer->page_offset ^= truesize; 2315 #else 2316 rx_buffer->page_offset += truesize; 2317 #endif 2318 } 2319 2320 /** 2321 * ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf 2322 * @q_vector: structure containing interrupt and ring information 2323 * @rx_ring: rx descriptor ring to transact packets on 2324 * @budget: Total limit on number of packets to process 2325 * 2326 * This function provides a "bounce buffer" approach to Rx interrupt 2327 * processing. The advantage to this is that on systems that have 2328 * expensive overhead for IOMMU access this provides a means of avoiding 2329 * it by maintaining the mapping of the page to the syste. 2330 * 2331 * Returns amount of work completed 2332 **/ 2333 static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, 2334 struct ixgbe_ring *rx_ring, 2335 const int budget) 2336 { 2337 unsigned int total_rx_bytes = 0, total_rx_packets = 0, frame_sz = 0; 2338 struct ixgbe_adapter *adapter = q_vector->adapter; 2339 #ifdef IXGBE_FCOE 2340 int ddp_bytes; 2341 unsigned int mss = 0; 2342 #endif /* IXGBE_FCOE */ 2343 u16 cleaned_count = ixgbe_desc_unused(rx_ring); 2344 unsigned int offset = rx_ring->rx_offset; 2345 unsigned int xdp_xmit = 0; 2346 struct xdp_buff xdp; 2347 2348 /* Frame size depend on rx_ring setup when PAGE_SIZE=4K */ 2349 #if (PAGE_SIZE < 8192) 2350 frame_sz = ixgbe_rx_frame_truesize(rx_ring, 0); 2351 #endif 2352 xdp_init_buff(&xdp, frame_sz, &rx_ring->xdp_rxq); 2353 2354 while (likely(total_rx_packets < budget)) { 2355 union ixgbe_adv_rx_desc *rx_desc; 2356 struct ixgbe_rx_buffer *rx_buffer; 2357 struct sk_buff *skb; 2358 int rx_buffer_pgcnt; 2359 unsigned int size; 2360 2361 /* return some buffers to hardware, one at a time is too slow */ 2362 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { 2363 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count); 2364 cleaned_count = 0; 2365 } 2366 2367 rx_desc = IXGBE_RX_DESC(rx_ring, rx_ring->next_to_clean); 2368 size = le16_to_cpu(rx_desc->wb.upper.length); 2369 if (!size) 2370 break; 2371 2372 /* This memory barrier is needed to keep us from reading 2373 * any other fields out of the rx_desc until we know the 2374 * descriptor has been written back 2375 */ 2376 dma_rmb(); 2377 2378 rx_buffer = ixgbe_get_rx_buffer(rx_ring, rx_desc, &skb, size, &rx_buffer_pgcnt); 2379 2380 /* retrieve a buffer from the ring */ 2381 if (!skb) { 2382 unsigned char *hard_start; 2383 2384 hard_start = page_address(rx_buffer->page) + 2385 rx_buffer->page_offset - offset; 2386 xdp_prepare_buff(&xdp, hard_start, offset, size, true); 2387 xdp_buff_clear_frags_flag(&xdp); 2388 #if (PAGE_SIZE > 4096) 2389 /* At larger PAGE_SIZE, frame_sz depend on len size */ 2390 xdp.frame_sz = ixgbe_rx_frame_truesize(rx_ring, size); 2391 #endif 2392 skb = ixgbe_run_xdp(adapter, rx_ring, &xdp); 2393 } 2394 2395 if (IS_ERR(skb)) { 2396 unsigned int xdp_res = -PTR_ERR(skb); 2397 2398 if (xdp_res & (IXGBE_XDP_TX | IXGBE_XDP_REDIR)) { 2399 xdp_xmit |= xdp_res; 2400 ixgbe_rx_buffer_flip(rx_ring, rx_buffer, size); 2401 } else { 2402 rx_buffer->pagecnt_bias++; 2403 } 2404 total_rx_packets++; 2405 total_rx_bytes += size; 2406 } else if (skb) { 2407 ixgbe_add_rx_frag(rx_ring, rx_buffer, skb, size); 2408 } else if (ring_uses_build_skb(rx_ring)) { 2409 skb = ixgbe_build_skb(rx_ring, rx_buffer, 2410 &xdp, rx_desc); 2411 } else { 2412 skb = ixgbe_construct_skb(rx_ring, rx_buffer, 2413 &xdp, rx_desc); 2414 } 2415 2416 /* exit if we failed to retrieve a buffer */ 2417 if (!skb) { 2418 rx_ring->rx_stats.alloc_rx_buff_failed++; 2419 rx_buffer->pagecnt_bias++; 2420 break; 2421 } 2422 2423 ixgbe_put_rx_buffer(rx_ring, rx_buffer, skb, rx_buffer_pgcnt); 2424 cleaned_count++; 2425 2426 /* place incomplete frames back on ring for completion */ 2427 if (ixgbe_is_non_eop(rx_ring, rx_desc, skb)) 2428 continue; 2429 2430 /* verify the packet layout is correct */ 2431 if (ixgbe_cleanup_headers(rx_ring, rx_desc, skb)) 2432 continue; 2433 2434 /* probably a little skewed due to removing CRC */ 2435 total_rx_bytes += skb->len; 2436 2437 /* populate checksum, timestamp, VLAN, and protocol */ 2438 ixgbe_process_skb_fields(rx_ring, rx_desc, skb); 2439 2440 #ifdef IXGBE_FCOE 2441 /* if ddp, not passing to ULD unless for FCP_RSP or error */ 2442 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) { 2443 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb); 2444 /* include DDPed FCoE data */ 2445 if (ddp_bytes > 0) { 2446 if (!mss) { 2447 mss = rx_ring->netdev->mtu - 2448 sizeof(struct fcoe_hdr) - 2449 sizeof(struct fc_frame_header) - 2450 sizeof(struct fcoe_crc_eof); 2451 if (mss > 512) 2452 mss &= ~511; 2453 } 2454 total_rx_bytes += ddp_bytes; 2455 total_rx_packets += DIV_ROUND_UP(ddp_bytes, 2456 mss); 2457 } 2458 if (!ddp_bytes) { 2459 dev_kfree_skb_any(skb); 2460 continue; 2461 } 2462 } 2463 2464 #endif /* IXGBE_FCOE */ 2465 ixgbe_rx_skb(q_vector, skb); 2466 2467 /* update budget accounting */ 2468 total_rx_packets++; 2469 } 2470 2471 if (xdp_xmit & IXGBE_XDP_REDIR) 2472 xdp_do_flush(); 2473 2474 if (xdp_xmit & IXGBE_XDP_TX) { 2475 struct ixgbe_ring *ring = ixgbe_determine_xdp_ring(adapter); 2476 2477 ixgbe_xdp_ring_update_tail_locked(ring); 2478 } 2479 2480 ixgbe_update_rx_ring_stats(rx_ring, q_vector, total_rx_packets, 2481 total_rx_bytes); 2482 2483 return total_rx_packets; 2484 } 2485 2486 /** 2487 * ixgbe_configure_msix - Configure MSI-X hardware 2488 * @adapter: board private structure 2489 * 2490 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X 2491 * interrupts. 2492 **/ 2493 static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) 2494 { 2495 struct ixgbe_q_vector *q_vector; 2496 int v_idx; 2497 u32 mask; 2498 2499 /* Populate MSIX to EITR Select */ 2500 if (adapter->num_vfs > 32) { 2501 u32 eitrsel = BIT(adapter->num_vfs - 32) - 1; 2502 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel); 2503 } 2504 2505 /* 2506 * Populate the IVAR table and set the ITR values to the 2507 * corresponding register. 2508 */ 2509 for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { 2510 struct ixgbe_ring *ring; 2511 q_vector = adapter->q_vector[v_idx]; 2512 2513 ixgbe_for_each_ring(ring, q_vector->rx) 2514 ixgbe_set_ivar(adapter, 0, ring->reg_idx, v_idx); 2515 2516 ixgbe_for_each_ring(ring, q_vector->tx) 2517 ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx); 2518 2519 ixgbe_write_eitr(q_vector); 2520 } 2521 2522 switch (adapter->hw.mac.type) { 2523 case ixgbe_mac_82598EB: 2524 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX, 2525 v_idx); 2526 break; 2527 case ixgbe_mac_82599EB: 2528 case ixgbe_mac_X540: 2529 case ixgbe_mac_X550: 2530 case ixgbe_mac_X550EM_x: 2531 case ixgbe_mac_x550em_a: 2532 case ixgbe_mac_e610: 2533 ixgbe_set_ivar(adapter, -1, 1, v_idx); 2534 break; 2535 default: 2536 break; 2537 } 2538 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950); 2539 2540 /* set up to autoclear timer, and the vectors */ 2541 mask = IXGBE_EIMS_ENABLE_MASK; 2542 mask &= ~(IXGBE_EIMS_OTHER | 2543 IXGBE_EIMS_MAILBOX | 2544 IXGBE_EIMS_LSC); 2545 2546 if (adapter->hw.mac.type == ixgbe_mac_e610) 2547 mask &= ~IXGBE_EIMS_FW_EVENT; 2548 2549 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); 2550 } 2551 2552 /** 2553 * ixgbe_update_itr - update the dynamic ITR value based on statistics 2554 * @q_vector: structure containing interrupt and ring information 2555 * @ring_container: structure containing ring performance data 2556 * 2557 * Stores a new ITR value based on packets and byte 2558 * counts during the last interrupt. The advantage of per interrupt 2559 * computation is faster updates and more accurate ITR for the current 2560 * traffic pattern. Constants in this function were computed 2561 * based on theoretical maximum wire speed and thresholds were set based 2562 * on testing data as well as attempting to minimize response time 2563 * while increasing bulk throughput. 2564 **/ 2565 static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector, 2566 struct ixgbe_ring_container *ring_container) 2567 { 2568 unsigned int itr = IXGBE_ITR_ADAPTIVE_MIN_USECS | 2569 IXGBE_ITR_ADAPTIVE_LATENCY; 2570 unsigned int avg_wire_size, packets, bytes; 2571 unsigned long next_update = jiffies; 2572 2573 /* If we don't have any rings just leave ourselves set for maximum 2574 * possible latency so we take ourselves out of the equation. 2575 */ 2576 if (!ring_container->ring) 2577 return; 2578 2579 /* If we didn't update within up to 1 - 2 jiffies we can assume 2580 * that either packets are coming in so slow there hasn't been 2581 * any work, or that there is so much work that NAPI is dealing 2582 * with interrupt moderation and we don't need to do anything. 2583 */ 2584 if (time_after(next_update, ring_container->next_update)) 2585 goto clear_counts; 2586 2587 packets = ring_container->total_packets; 2588 2589 /* We have no packets to actually measure against. This means 2590 * either one of the other queues on this vector is active or 2591 * we are a Tx queue doing TSO with too high of an interrupt rate. 2592 * 2593 * When this occurs just tick up our delay by the minimum value 2594 * and hope that this extra delay will prevent us from being called 2595 * without any work on our queue. 2596 */ 2597 if (!packets) { 2598 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; 2599 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) 2600 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; 2601 itr += ring_container->itr & IXGBE_ITR_ADAPTIVE_LATENCY; 2602 goto clear_counts; 2603 } 2604 2605 bytes = ring_container->total_bytes; 2606 2607 /* If packets are less than 4 or bytes are less than 9000 assume 2608 * insufficient data to use bulk rate limiting approach. We are 2609 * likely latency driven. 2610 */ 2611 if (packets < 4 && bytes < 9000) { 2612 itr = IXGBE_ITR_ADAPTIVE_LATENCY; 2613 goto adjust_by_size; 2614 } 2615 2616 /* Between 4 and 48 we can assume that our current interrupt delay 2617 * is only slightly too low. As such we should increase it by a small 2618 * fixed amount. 2619 */ 2620 if (packets < 48) { 2621 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; 2622 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) 2623 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; 2624 goto clear_counts; 2625 } 2626 2627 /* Between 48 and 96 is our "goldilocks" zone where we are working 2628 * out "just right". Just report that our current ITR is good for us. 2629 */ 2630 if (packets < 96) { 2631 itr = q_vector->itr >> 2; 2632 goto clear_counts; 2633 } 2634 2635 /* If packet count is 96 or greater we are likely looking at a slight 2636 * overrun of the delay we want. Try halving our delay to see if that 2637 * will cut the number of packets in half per interrupt. 2638 */ 2639 if (packets < 256) { 2640 itr = q_vector->itr >> 3; 2641 if (itr < IXGBE_ITR_ADAPTIVE_MIN_USECS) 2642 itr = IXGBE_ITR_ADAPTIVE_MIN_USECS; 2643 goto clear_counts; 2644 } 2645 2646 /* The paths below assume we are dealing with a bulk ITR since number 2647 * of packets is 256 or greater. We are just going to have to compute 2648 * a value and try to bring the count under control, though for smaller 2649 * packet sizes there isn't much we can do as NAPI polling will likely 2650 * be kicking in sooner rather than later. 2651 */ 2652 itr = IXGBE_ITR_ADAPTIVE_BULK; 2653 2654 adjust_by_size: 2655 /* If packet counts are 256 or greater we can assume we have a gross 2656 * overestimation of what the rate should be. Instead of trying to fine 2657 * tune it just use the formula below to try and dial in an exact value 2658 * give the current packet size of the frame. 2659 */ 2660 avg_wire_size = bytes / packets; 2661 2662 /* The following is a crude approximation of: 2663 * wmem_default / (size + overhead) = desired_pkts_per_int 2664 * rate / bits_per_byte / (size + ethernet overhead) = pkt_rate 2665 * (desired_pkt_rate / pkt_rate) * usecs_per_sec = ITR value 2666 * 2667 * Assuming wmem_default is 212992 and overhead is 640 bytes per 2668 * packet, (256 skb, 64 headroom, 320 shared info), we can reduce the 2669 * formula down to 2670 * 2671 * (170 * (size + 24)) / (size + 640) = ITR 2672 * 2673 * We first do some math on the packet size and then finally bitshift 2674 * by 8 after rounding up. We also have to account for PCIe link speed 2675 * difference as ITR scales based on this. 2676 */ 2677 if (avg_wire_size <= 60) { 2678 /* Start at 50k ints/sec */ 2679 avg_wire_size = 5120; 2680 } else if (avg_wire_size <= 316) { 2681 /* 50K ints/sec to 16K ints/sec */ 2682 avg_wire_size *= 40; 2683 avg_wire_size += 2720; 2684 } else if (avg_wire_size <= 1084) { 2685 /* 16K ints/sec to 9.2K ints/sec */ 2686 avg_wire_size *= 15; 2687 avg_wire_size += 11452; 2688 } else if (avg_wire_size < 1968) { 2689 /* 9.2K ints/sec to 8K ints/sec */ 2690 avg_wire_size *= 5; 2691 avg_wire_size += 22420; 2692 } else { 2693 /* plateau at a limit of 8K ints/sec */ 2694 avg_wire_size = 32256; 2695 } 2696 2697 /* If we are in low latency mode half our delay which doubles the rate 2698 * to somewhere between 100K to 16K ints/sec 2699 */ 2700 if (itr & IXGBE_ITR_ADAPTIVE_LATENCY) 2701 avg_wire_size >>= 1; 2702 2703 /* Resultant value is 256 times larger than it needs to be. This 2704 * gives us room to adjust the value as needed to either increase 2705 * or decrease the value based on link speeds of 10G, 2.5G, 1G, etc. 2706 * 2707 * Use addition as we have already recorded the new latency flag 2708 * for the ITR value. 2709 */ 2710 switch (q_vector->adapter->link_speed) { 2711 case IXGBE_LINK_SPEED_10GB_FULL: 2712 case IXGBE_LINK_SPEED_100_FULL: 2713 default: 2714 itr += DIV_ROUND_UP(avg_wire_size, 2715 IXGBE_ITR_ADAPTIVE_MIN_INC * 256) * 2716 IXGBE_ITR_ADAPTIVE_MIN_INC; 2717 break; 2718 case IXGBE_LINK_SPEED_2_5GB_FULL: 2719 case IXGBE_LINK_SPEED_1GB_FULL: 2720 case IXGBE_LINK_SPEED_10_FULL: 2721 if (avg_wire_size > 8064) 2722 avg_wire_size = 8064; 2723 itr += DIV_ROUND_UP(avg_wire_size, 2724 IXGBE_ITR_ADAPTIVE_MIN_INC * 64) * 2725 IXGBE_ITR_ADAPTIVE_MIN_INC; 2726 break; 2727 } 2728 2729 clear_counts: 2730 /* write back value */ 2731 ring_container->itr = itr; 2732 2733 /* next update should occur within next jiffy */ 2734 ring_container->next_update = next_update + 1; 2735 2736 ring_container->total_bytes = 0; 2737 ring_container->total_packets = 0; 2738 } 2739 2740 /** 2741 * ixgbe_write_eitr - write EITR register in hardware specific way 2742 * @q_vector: structure containing interrupt and ring information 2743 * 2744 * This function is made to be called by ethtool and by the driver 2745 * when it needs to update EITR registers at runtime. Hardware 2746 * specific quirks/differences are taken care of here. 2747 */ 2748 void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector) 2749 { 2750 struct ixgbe_adapter *adapter = q_vector->adapter; 2751 struct ixgbe_hw *hw = &adapter->hw; 2752 int v_idx = q_vector->v_idx; 2753 u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR; 2754 2755 switch (adapter->hw.mac.type) { 2756 case ixgbe_mac_82598EB: 2757 /* must write high and low 16 bits to reset counter */ 2758 itr_reg |= (itr_reg << 16); 2759 break; 2760 case ixgbe_mac_82599EB: 2761 case ixgbe_mac_X540: 2762 case ixgbe_mac_X550: 2763 case ixgbe_mac_X550EM_x: 2764 case ixgbe_mac_x550em_a: 2765 case ixgbe_mac_e610: 2766 /* 2767 * set the WDIS bit to not clear the timer bits and cause an 2768 * immediate assertion of the interrupt 2769 */ 2770 itr_reg |= IXGBE_EITR_CNT_WDIS; 2771 break; 2772 default: 2773 break; 2774 } 2775 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg); 2776 } 2777 2778 static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector) 2779 { 2780 u32 new_itr; 2781 2782 ixgbe_update_itr(q_vector, &q_vector->tx); 2783 ixgbe_update_itr(q_vector, &q_vector->rx); 2784 2785 /* use the smallest value of new ITR delay calculations */ 2786 new_itr = min(q_vector->rx.itr, q_vector->tx.itr); 2787 2788 /* Clear latency flag if set, shift into correct position */ 2789 new_itr &= ~IXGBE_ITR_ADAPTIVE_LATENCY; 2790 new_itr <<= 2; 2791 2792 if (new_itr != q_vector->itr) { 2793 /* save the algorithm value here */ 2794 q_vector->itr = new_itr; 2795 2796 ixgbe_write_eitr(q_vector); 2797 } 2798 } 2799 2800 /** 2801 * ixgbe_check_overtemp_subtask - check for over temperature 2802 * @adapter: pointer to adapter 2803 **/ 2804 static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter) 2805 { 2806 struct ixgbe_hw *hw = &adapter->hw; 2807 u32 eicr = adapter->interrupt_event; 2808 2809 if (test_bit(__IXGBE_DOWN, &adapter->state)) 2810 return; 2811 2812 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT)) 2813 return; 2814 2815 adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2816 2817 switch (hw->device_id) { 2818 case IXGBE_DEV_ID_82599_T3_LOM: 2819 /* 2820 * Since the warning interrupt is for both ports 2821 * we don't have to check if: 2822 * - This interrupt wasn't for our port. 2823 * - We may have missed the interrupt so always have to 2824 * check if we got a LSC 2825 */ 2826 if (!(eicr & IXGBE_EICR_GPI_SDP0_8259X) && 2827 !(eicr & IXGBE_EICR_LSC)) 2828 return; 2829 2830 if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) { 2831 u32 speed; 2832 bool link_up = false; 2833 2834 hw->mac.ops.check_link(hw, &speed, &link_up, false); 2835 2836 if (link_up) 2837 return; 2838 } 2839 2840 /* Check if this is not due to overtemp */ 2841 if (!hw->phy.ops.check_overtemp(hw)) 2842 return; 2843 2844 break; 2845 case IXGBE_DEV_ID_X550EM_A_1G_T: 2846 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 2847 if (!hw->phy.ops.check_overtemp(hw)) 2848 return; 2849 break; 2850 default: 2851 if (adapter->hw.mac.type >= ixgbe_mac_X540) 2852 return; 2853 if (!(eicr & IXGBE_EICR_GPI_SDP0(hw))) 2854 return; 2855 break; 2856 } 2857 e_crit(drv, "%s\n", ixgbe_overheat_msg); 2858 2859 adapter->interrupt_event = 0; 2860 } 2861 2862 static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr) 2863 { 2864 struct ixgbe_hw *hw = &adapter->hw; 2865 2866 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) && 2867 (eicr & IXGBE_EICR_GPI_SDP1(hw))) { 2868 e_crit(probe, "Fan has stopped, replace the adapter\n"); 2869 /* write to clear the interrupt */ 2870 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); 2871 } 2872 } 2873 2874 static void ixgbe_check_overtemp_event(struct ixgbe_adapter *adapter, u32 eicr) 2875 { 2876 struct ixgbe_hw *hw = &adapter->hw; 2877 2878 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)) 2879 return; 2880 2881 switch (adapter->hw.mac.type) { 2882 case ixgbe_mac_82599EB: 2883 /* 2884 * Need to check link state so complete overtemp check 2885 * on service task 2886 */ 2887 if (((eicr & IXGBE_EICR_GPI_SDP0(hw)) || 2888 (eicr & IXGBE_EICR_LSC)) && 2889 (!test_bit(__IXGBE_DOWN, &adapter->state))) { 2890 adapter->interrupt_event = eicr; 2891 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2892 ixgbe_service_event_schedule(adapter); 2893 return; 2894 } 2895 return; 2896 case ixgbe_mac_x550em_a: 2897 if (eicr & IXGBE_EICR_GPI_SDP0_X550EM_a) { 2898 adapter->interrupt_event = eicr; 2899 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2900 ixgbe_service_event_schedule(adapter); 2901 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 2902 IXGBE_EICR_GPI_SDP0_X550EM_a); 2903 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICR, 2904 IXGBE_EICR_GPI_SDP0_X550EM_a); 2905 } 2906 return; 2907 case ixgbe_mac_X550: 2908 case ixgbe_mac_X540: 2909 if (!(eicr & IXGBE_EICR_TS)) 2910 return; 2911 break; 2912 default: 2913 return; 2914 } 2915 2916 e_crit(drv, "%s\n", ixgbe_overheat_msg); 2917 } 2918 2919 static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw) 2920 { 2921 switch (hw->mac.type) { 2922 case ixgbe_mac_82598EB: 2923 if (hw->phy.type == ixgbe_phy_nl) 2924 return true; 2925 return false; 2926 case ixgbe_mac_82599EB: 2927 case ixgbe_mac_X550EM_x: 2928 case ixgbe_mac_x550em_a: 2929 switch (hw->mac.ops.get_media_type(hw)) { 2930 case ixgbe_media_type_fiber: 2931 case ixgbe_media_type_fiber_qsfp: 2932 return true; 2933 default: 2934 return false; 2935 } 2936 default: 2937 return false; 2938 } 2939 } 2940 2941 static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr) 2942 { 2943 struct ixgbe_hw *hw = &adapter->hw; 2944 u32 eicr_mask = IXGBE_EICR_GPI_SDP2(hw); 2945 2946 if (!ixgbe_is_sfp(hw)) 2947 return; 2948 2949 /* Later MAC's use different SDP */ 2950 if (hw->mac.type >= ixgbe_mac_X540) 2951 eicr_mask = IXGBE_EICR_GPI_SDP0_X540; 2952 2953 if (eicr & eicr_mask) { 2954 /* Clear the interrupt */ 2955 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr_mask); 2956 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2957 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 2958 adapter->sfp_poll_time = 0; 2959 ixgbe_service_event_schedule(adapter); 2960 } 2961 } 2962 2963 if (adapter->hw.mac.type == ixgbe_mac_82599EB && 2964 (eicr & IXGBE_EICR_GPI_SDP1(hw))) { 2965 /* Clear the interrupt */ 2966 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); 2967 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2968 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; 2969 ixgbe_service_event_schedule(adapter); 2970 } 2971 } 2972 } 2973 2974 static void ixgbe_check_lsc(struct ixgbe_adapter *adapter) 2975 { 2976 struct ixgbe_hw *hw = &adapter->hw; 2977 2978 adapter->lsc_int++; 2979 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 2980 adapter->link_check_timeout = jiffies; 2981 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2982 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC); 2983 IXGBE_WRITE_FLUSH(hw); 2984 ixgbe_service_event_schedule(adapter); 2985 } 2986 } 2987 2988 /** 2989 * ixgbe_check_phy_fw_load - check if PHY FW load failed 2990 * @adapter: pointer to adapter structure 2991 * @link_cfg_err: bitmap from the link info structure 2992 * 2993 * Check if external PHY FW load failed and print an error message if it did. 2994 */ 2995 static void ixgbe_check_phy_fw_load(struct ixgbe_adapter *adapter, 2996 u8 link_cfg_err) 2997 { 2998 if (!(link_cfg_err & IXGBE_ACI_LINK_EXTERNAL_PHY_LOAD_FAILURE)) { 2999 adapter->flags2 &= ~IXGBE_FLAG2_PHY_FW_LOAD_FAILED; 3000 return; 3001 } 3002 3003 if (adapter->flags2 & IXGBE_FLAG2_PHY_FW_LOAD_FAILED) 3004 return; 3005 3006 if (link_cfg_err & IXGBE_ACI_LINK_EXTERNAL_PHY_LOAD_FAILURE) { 3007 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"); 3008 adapter->flags2 |= IXGBE_FLAG2_PHY_FW_LOAD_FAILED; 3009 } 3010 } 3011 3012 /** 3013 * ixgbe_check_module_power - check module power level 3014 * @adapter: pointer to adapter structure 3015 * @link_cfg_err: bitmap from the link info structure 3016 * 3017 * Check module power level returned by a previous call to aci_get_link_info 3018 * and print error messages if module power level is not supported. 3019 */ 3020 static void ixgbe_check_module_power(struct ixgbe_adapter *adapter, 3021 u8 link_cfg_err) 3022 { 3023 /* If module power level is supported, clear the flag. */ 3024 if (!(link_cfg_err & (IXGBE_ACI_LINK_INVAL_MAX_POWER_LIMIT | 3025 IXGBE_ACI_LINK_MODULE_POWER_UNSUPPORTED))) { 3026 adapter->flags2 &= ~IXGBE_FLAG2_MOD_POWER_UNSUPPORTED; 3027 return; 3028 } 3029 3030 /* If IXGBE_FLAG2_MOD_POWER_UNSUPPORTED was previously set and the 3031 * above block didn't clear this bit, there's nothing to do. 3032 */ 3033 if (adapter->flags2 & IXGBE_FLAG2_MOD_POWER_UNSUPPORTED) 3034 return; 3035 3036 if (link_cfg_err & IXGBE_ACI_LINK_INVAL_MAX_POWER_LIMIT) { 3037 netdev_err(adapter->netdev, "The installed module is incompatible with the device's NVM image. Cannot start link.\n"); 3038 adapter->flags2 |= IXGBE_FLAG2_MOD_POWER_UNSUPPORTED; 3039 } else if (link_cfg_err & IXGBE_ACI_LINK_MODULE_POWER_UNSUPPORTED) { 3040 netdev_err(adapter->netdev, "The module's power requirements exceed the device's power supply. Cannot start link.\n"); 3041 adapter->flags2 |= IXGBE_FLAG2_MOD_POWER_UNSUPPORTED; 3042 } 3043 } 3044 3045 /** 3046 * ixgbe_check_link_cfg_err - check if link configuration failed 3047 * @adapter: pointer to adapter structure 3048 * @link_cfg_err: bitmap from the link info structure 3049 * 3050 * Print if any link configuration failure happens due to the value in the 3051 * link_cfg_err parameter in the link info structure. 3052 */ 3053 static void ixgbe_check_link_cfg_err(struct ixgbe_adapter *adapter, 3054 u8 link_cfg_err) 3055 { 3056 ixgbe_check_module_power(adapter, link_cfg_err); 3057 ixgbe_check_phy_fw_load(adapter, link_cfg_err); 3058 } 3059 3060 /** 3061 * ixgbe_process_link_status_event - process the link event 3062 * @adapter: pointer to adapter structure 3063 * @link_up: true if the physical link is up and false if it is down 3064 * @link_speed: current link speed received from the link event 3065 * 3066 * Return: 0 on success or negative value on failure. 3067 */ 3068 static int 3069 ixgbe_process_link_status_event(struct ixgbe_adapter *adapter, bool link_up, 3070 u16 link_speed) 3071 { 3072 struct ixgbe_hw *hw = &adapter->hw; 3073 int status; 3074 3075 /* Update the link info structures and re-enable link events, 3076 * don't bail on failure due to other book keeping needed. 3077 */ 3078 status = ixgbe_update_link_info(hw); 3079 if (status) 3080 e_dev_err("Failed to update link status, err %d aq_err %d\n", 3081 status, hw->aci.last_status); 3082 3083 ixgbe_check_link_cfg_err(adapter, hw->link.link_info.link_cfg_err); 3084 3085 /* Check if the link state is up after updating link info, and treat 3086 * this event as an UP event since the link is actually UP now. 3087 */ 3088 if (hw->link.link_info.link_info & IXGBE_ACI_LINK_UP) 3089 link_up = true; 3090 3091 /* Turn off PHY if media was removed. */ 3092 if (!(adapter->flags2 & IXGBE_FLAG2_NO_MEDIA) && 3093 !(hw->link.link_info.link_info & IXGBE_ACI_MEDIA_AVAILABLE)) 3094 adapter->flags2 |= IXGBE_FLAG2_NO_MEDIA; 3095 3096 if (link_up == adapter->link_up && 3097 link_up == netif_carrier_ok(adapter->netdev) && 3098 link_speed == adapter->link_speed) 3099 return 0; 3100 3101 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 3102 adapter->link_check_timeout = jiffies; 3103 ixgbe_watchdog_update_link(adapter); 3104 3105 if (link_up) 3106 ixgbe_watchdog_link_is_up(adapter); 3107 else 3108 ixgbe_watchdog_link_is_down(adapter); 3109 3110 return 0; 3111 } 3112 3113 /** 3114 * ixgbe_handle_link_status_event - handle link status event via ACI 3115 * @adapter: pointer to adapter structure 3116 * @e: event structure containing link status info 3117 */ 3118 static void 3119 ixgbe_handle_link_status_event(struct ixgbe_adapter *adapter, 3120 struct ixgbe_aci_event *e) 3121 { 3122 struct ixgbe_aci_cmd_get_link_status_data *link_data; 3123 u16 link_speed; 3124 bool link_up; 3125 3126 link_data = (struct ixgbe_aci_cmd_get_link_status_data *)e->msg_buf; 3127 3128 link_up = !!(link_data->link_info & IXGBE_ACI_LINK_UP); 3129 link_speed = le16_to_cpu(link_data->link_speed); 3130 3131 if (ixgbe_process_link_status_event(adapter, link_up, link_speed)) 3132 e_dev_warn("Could not process link status event"); 3133 } 3134 3135 /** 3136 * ixgbe_schedule_fw_event - schedule Firmware event 3137 * @adapter: pointer to the adapter structure 3138 * 3139 * If the adapter is not in down, removing or resetting state, 3140 * an event is scheduled. 3141 */ 3142 static void ixgbe_schedule_fw_event(struct ixgbe_adapter *adapter) 3143 { 3144 if (!test_bit(__IXGBE_DOWN, &adapter->state) && 3145 !test_bit(__IXGBE_REMOVING, &adapter->state) && 3146 !test_bit(__IXGBE_RESETTING, &adapter->state)) { 3147 adapter->flags2 |= IXGBE_FLAG2_FW_ASYNC_EVENT; 3148 ixgbe_service_event_schedule(adapter); 3149 } 3150 } 3151 3152 /** 3153 * ixgbe_aci_event_cleanup - release msg_buf memory 3154 * @event: pointer to the event holding msg_buf to be released 3155 * 3156 * Clean memory allocated for event's msg_buf. Implements auto memory cleanup. 3157 */ 3158 static void ixgbe_aci_event_cleanup(struct ixgbe_aci_event *event) 3159 { 3160 kfree(event->msg_buf); 3161 } 3162 3163 /** 3164 * ixgbe_handle_fw_event - handle Firmware event 3165 * @adapter: pointer to the adapter structure 3166 * 3167 * Obtain an event from the ACI and then and then process it according to the 3168 * type of the event and the opcode. 3169 */ 3170 static void ixgbe_handle_fw_event(struct ixgbe_adapter *adapter) 3171 { 3172 struct ixgbe_aci_event event __cleanup(ixgbe_aci_event_cleanup); 3173 struct ixgbe_hw *hw = &adapter->hw; 3174 bool pending = false; 3175 int err; 3176 3177 if (adapter->flags2 & IXGBE_FLAG2_FW_ASYNC_EVENT) 3178 adapter->flags2 &= ~IXGBE_FLAG2_FW_ASYNC_EVENT; 3179 event.buf_len = IXGBE_ACI_MAX_BUFFER_SIZE; 3180 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); 3181 if (!event.msg_buf) 3182 return; 3183 3184 do { 3185 err = ixgbe_aci_get_event(hw, &event, &pending); 3186 if (err) 3187 break; 3188 3189 switch (le16_to_cpu(event.desc.opcode)) { 3190 case ixgbe_aci_opc_get_link_status: 3191 ixgbe_handle_link_status_event(adapter, &event); 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 = netdev_priv(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 = netdev_priv(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 = netdev_priv(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 = netdev_priv(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 = netdev_priv(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 = netdev_priv(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 = netdev_priv(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 del_timer_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 = netdev_priv(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 (ixgbe_init_eeprom_params_generic(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 = netdev_priv(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 = netdev_priv(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 = netdev_priv(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 = from_timer(adapter, t, service_timer); 8314 unsigned long next_event_offset; 8315 8316 /* poll faster when waiting for link */ 8317 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) 8318 next_event_offset = HZ / 10; 8319 else 8320 next_event_offset = HZ * 2; 8321 8322 /* Reset the timer */ 8323 mod_timer(&adapter->service_timer, next_event_offset + jiffies); 8324 8325 ixgbe_service_event_schedule(adapter); 8326 } 8327 8328 static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter *adapter) 8329 { 8330 struct ixgbe_hw *hw = &adapter->hw; 8331 bool overtemp; 8332 8333 if (!(adapter->flags2 & IXGBE_FLAG2_PHY_INTERRUPT)) 8334 return; 8335 8336 adapter->flags2 &= ~IXGBE_FLAG2_PHY_INTERRUPT; 8337 8338 if (!hw->phy.ops.handle_lasi) 8339 return; 8340 8341 hw->phy.ops.handle_lasi(&adapter->hw, &overtemp); 8342 if (overtemp) 8343 e_crit(drv, "%s\n", ixgbe_overheat_msg); 8344 } 8345 8346 static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter) 8347 { 8348 if (!test_and_clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state)) 8349 return; 8350 8351 rtnl_lock(); 8352 /* If we're already down, removing or resetting, just bail */ 8353 if (test_bit(__IXGBE_DOWN, &adapter->state) || 8354 test_bit(__IXGBE_REMOVING, &adapter->state) || 8355 test_bit(__IXGBE_RESETTING, &adapter->state)) { 8356 rtnl_unlock(); 8357 return; 8358 } 8359 8360 ixgbe_dump(adapter); 8361 netdev_err(adapter->netdev, "Reset adapter\n"); 8362 adapter->tx_timeout_count++; 8363 8364 ixgbe_reinit_locked(adapter); 8365 rtnl_unlock(); 8366 } 8367 8368 /** 8369 * ixgbe_check_fw_error - Check firmware for errors 8370 * @adapter: the adapter private structure 8371 * 8372 * Check firmware errors in register FWSM 8373 */ 8374 static bool ixgbe_check_fw_error(struct ixgbe_adapter *adapter) 8375 { 8376 struct ixgbe_hw *hw = &adapter->hw; 8377 u32 fwsm; 8378 8379 /* read fwsm.ext_err_ind register and log errors */ 8380 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw)); 8381 8382 if (fwsm & IXGBE_FWSM_EXT_ERR_IND_MASK || 8383 !(fwsm & IXGBE_FWSM_FW_VAL_BIT)) 8384 e_dev_warn("Warning firmware error detected FWSM: 0x%08X\n", 8385 fwsm); 8386 8387 if (hw->mac.ops.fw_recovery_mode && hw->mac.ops.fw_recovery_mode(hw)) { 8388 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"); 8389 return true; 8390 } 8391 8392 return false; 8393 } 8394 8395 /** 8396 * ixgbe_service_task - manages and runs subtasks 8397 * @work: pointer to work_struct containing our data 8398 **/ 8399 static void ixgbe_service_task(struct work_struct *work) 8400 { 8401 struct ixgbe_adapter *adapter = container_of(work, 8402 struct ixgbe_adapter, 8403 service_task); 8404 if (ixgbe_removed(adapter->hw.hw_addr)) { 8405 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 8406 rtnl_lock(); 8407 ixgbe_down(adapter); 8408 rtnl_unlock(); 8409 } 8410 ixgbe_service_event_complete(adapter); 8411 return; 8412 } 8413 if (ixgbe_check_fw_error(adapter)) { 8414 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 8415 unregister_netdev(adapter->netdev); 8416 ixgbe_service_event_complete(adapter); 8417 return; 8418 } 8419 if (adapter->hw.mac.type == ixgbe_mac_e610) { 8420 if (adapter->flags2 & IXGBE_FLAG2_FW_ASYNC_EVENT) 8421 ixgbe_handle_fw_event(adapter); 8422 ixgbe_check_media_subtask(adapter); 8423 } 8424 ixgbe_reset_subtask(adapter); 8425 ixgbe_phy_interrupt_subtask(adapter); 8426 ixgbe_sfp_detection_subtask(adapter); 8427 ixgbe_sfp_link_config_subtask(adapter); 8428 ixgbe_check_overtemp_subtask(adapter); 8429 ixgbe_watchdog_subtask(adapter); 8430 ixgbe_fdir_reinit_subtask(adapter); 8431 ixgbe_check_hang_subtask(adapter); 8432 8433 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) { 8434 ixgbe_ptp_overflow_check(adapter); 8435 if (adapter->flags & IXGBE_FLAG_RX_HWTSTAMP_IN_REGISTER) 8436 ixgbe_ptp_rx_hang(adapter); 8437 ixgbe_ptp_tx_hang(adapter); 8438 } 8439 8440 ixgbe_service_event_complete(adapter); 8441 } 8442 8443 static int ixgbe_tso(struct ixgbe_ring *tx_ring, 8444 struct ixgbe_tx_buffer *first, 8445 u8 *hdr_len, 8446 struct ixgbe_ipsec_tx_data *itd) 8447 { 8448 u32 vlan_macip_lens, type_tucmd, mss_l4len_idx; 8449 struct sk_buff *skb = first->skb; 8450 union { 8451 struct iphdr *v4; 8452 struct ipv6hdr *v6; 8453 unsigned char *hdr; 8454 } ip; 8455 union { 8456 struct tcphdr *tcp; 8457 struct udphdr *udp; 8458 unsigned char *hdr; 8459 } l4; 8460 u32 paylen, l4_offset; 8461 u32 fceof_saidx = 0; 8462 int err; 8463 8464 if (skb->ip_summed != CHECKSUM_PARTIAL) 8465 return 0; 8466 8467 if (!skb_is_gso(skb)) 8468 return 0; 8469 8470 err = skb_cow_head(skb, 0); 8471 if (err < 0) 8472 return err; 8473 8474 if (eth_p_mpls(first->protocol)) 8475 ip.hdr = skb_inner_network_header(skb); 8476 else 8477 ip.hdr = skb_network_header(skb); 8478 l4.hdr = skb_checksum_start(skb); 8479 8480 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ 8481 type_tucmd = (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ? 8482 IXGBE_ADVTXD_TUCMD_L4T_UDP : IXGBE_ADVTXD_TUCMD_L4T_TCP; 8483 8484 /* initialize outer IP header fields */ 8485 if (ip.v4->version == 4) { 8486 unsigned char *csum_start = skb_checksum_start(skb); 8487 unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4); 8488 int len = csum_start - trans_start; 8489 8490 /* IP header will have to cancel out any data that 8491 * is not a part of the outer IP header, so set to 8492 * a reverse csum if needed, else init check to 0. 8493 */ 8494 ip.v4->check = (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) ? 8495 csum_fold(csum_partial(trans_start, 8496 len, 0)) : 0; 8497 type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4; 8498 8499 ip.v4->tot_len = 0; 8500 first->tx_flags |= IXGBE_TX_FLAGS_TSO | 8501 IXGBE_TX_FLAGS_CSUM | 8502 IXGBE_TX_FLAGS_IPV4; 8503 } else { 8504 ip.v6->payload_len = 0; 8505 first->tx_flags |= IXGBE_TX_FLAGS_TSO | 8506 IXGBE_TX_FLAGS_CSUM; 8507 } 8508 8509 /* determine offset of inner transport header */ 8510 l4_offset = l4.hdr - skb->data; 8511 8512 /* remove payload length from inner checksum */ 8513 paylen = skb->len - l4_offset; 8514 8515 if (type_tucmd & IXGBE_ADVTXD_TUCMD_L4T_TCP) { 8516 /* compute length of segmentation header */ 8517 *hdr_len = (l4.tcp->doff * 4) + l4_offset; 8518 csum_replace_by_diff(&l4.tcp->check, 8519 (__force __wsum)htonl(paylen)); 8520 } else { 8521 /* compute length of segmentation header */ 8522 *hdr_len = sizeof(*l4.udp) + l4_offset; 8523 csum_replace_by_diff(&l4.udp->check, 8524 (__force __wsum)htonl(paylen)); 8525 } 8526 8527 /* update gso size and bytecount with header size */ 8528 first->gso_segs = skb_shinfo(skb)->gso_segs; 8529 first->bytecount += (first->gso_segs - 1) * *hdr_len; 8530 8531 /* mss_l4len_id: use 0 as index for TSO */ 8532 mss_l4len_idx = (*hdr_len - l4_offset) << IXGBE_ADVTXD_L4LEN_SHIFT; 8533 mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT; 8534 8535 fceof_saidx |= itd->sa_idx; 8536 type_tucmd |= itd->flags | itd->trailer_len; 8537 8538 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */ 8539 vlan_macip_lens = l4.hdr - ip.hdr; 8540 vlan_macip_lens |= (ip.hdr - skb->data) << IXGBE_ADVTXD_MACLEN_SHIFT; 8541 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; 8542 8543 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, 8544 mss_l4len_idx); 8545 8546 return 1; 8547 } 8548 8549 static void ixgbe_tx_csum(struct ixgbe_ring *tx_ring, 8550 struct ixgbe_tx_buffer *first, 8551 struct ixgbe_ipsec_tx_data *itd) 8552 { 8553 struct sk_buff *skb = first->skb; 8554 u32 vlan_macip_lens = 0; 8555 u32 fceof_saidx = 0; 8556 u32 type_tucmd = 0; 8557 8558 if (skb->ip_summed != CHECKSUM_PARTIAL) { 8559 csum_failed: 8560 if (!(first->tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | 8561 IXGBE_TX_FLAGS_CC))) 8562 return; 8563 goto no_csum; 8564 } 8565 8566 switch (skb->csum_offset) { 8567 case offsetof(struct tcphdr, check): 8568 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP; 8569 fallthrough; 8570 case offsetof(struct udphdr, check): 8571 break; 8572 case offsetof(struct sctphdr, checksum): 8573 /* validate that this is actually an SCTP request */ 8574 if (skb_csum_is_sctp(skb)) { 8575 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_SCTP; 8576 break; 8577 } 8578 fallthrough; 8579 default: 8580 skb_checksum_help(skb); 8581 goto csum_failed; 8582 } 8583 8584 /* update TX checksum flag */ 8585 first->tx_flags |= IXGBE_TX_FLAGS_CSUM; 8586 vlan_macip_lens = skb_checksum_start_offset(skb) - 8587 skb_network_offset(skb); 8588 no_csum: 8589 /* vlan_macip_lens: MACLEN, VLAN tag */ 8590 vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT; 8591 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; 8592 8593 fceof_saidx |= itd->sa_idx; 8594 type_tucmd |= itd->flags | itd->trailer_len; 8595 8596 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, 0); 8597 } 8598 8599 #define IXGBE_SET_FLAG(_input, _flag, _result) \ 8600 ((_flag <= _result) ? \ 8601 ((u32)(_input & _flag) * (_result / _flag)) : \ 8602 ((u32)(_input & _flag) / (_flag / _result))) 8603 8604 static u32 ixgbe_tx_cmd_type(struct sk_buff *skb, u32 tx_flags) 8605 { 8606 /* set type for advanced descriptor with frame checksum insertion */ 8607 u32 cmd_type = IXGBE_ADVTXD_DTYP_DATA | 8608 IXGBE_ADVTXD_DCMD_DEXT | 8609 IXGBE_ADVTXD_DCMD_IFCS; 8610 8611 /* set HW vlan bit if vlan is present */ 8612 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_HW_VLAN, 8613 IXGBE_ADVTXD_DCMD_VLE); 8614 8615 /* set segmentation enable bits for TSO/FSO */ 8616 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSO, 8617 IXGBE_ADVTXD_DCMD_TSE); 8618 8619 /* set timestamp bit if present */ 8620 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSTAMP, 8621 IXGBE_ADVTXD_MAC_TSTAMP); 8622 8623 /* insert frame checksum */ 8624 cmd_type ^= IXGBE_SET_FLAG(skb->no_fcs, 1, IXGBE_ADVTXD_DCMD_IFCS); 8625 8626 return cmd_type; 8627 } 8628 8629 static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc, 8630 u32 tx_flags, unsigned int paylen) 8631 { 8632 u32 olinfo_status = paylen << IXGBE_ADVTXD_PAYLEN_SHIFT; 8633 8634 /* enable L4 checksum for TSO and TX checksum offload */ 8635 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8636 IXGBE_TX_FLAGS_CSUM, 8637 IXGBE_ADVTXD_POPTS_TXSM); 8638 8639 /* enable IPv4 checksum for TSO */ 8640 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8641 IXGBE_TX_FLAGS_IPV4, 8642 IXGBE_ADVTXD_POPTS_IXSM); 8643 8644 /* enable IPsec */ 8645 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8646 IXGBE_TX_FLAGS_IPSEC, 8647 IXGBE_ADVTXD_POPTS_IPSEC); 8648 8649 /* 8650 * Check Context must be set if Tx switch is enabled, which it 8651 * always is for case where virtual functions are running 8652 */ 8653 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8654 IXGBE_TX_FLAGS_CC, 8655 IXGBE_ADVTXD_CC); 8656 8657 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); 8658 } 8659 8660 static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) 8661 { 8662 if (!netif_subqueue_try_stop(tx_ring->netdev, tx_ring->queue_index, 8663 ixgbe_desc_unused(tx_ring), size)) 8664 return -EBUSY; 8665 8666 ++tx_ring->tx_stats.restart_queue; 8667 return 0; 8668 } 8669 8670 static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) 8671 { 8672 if (likely(ixgbe_desc_unused(tx_ring) >= size)) 8673 return 0; 8674 8675 return __ixgbe_maybe_stop_tx(tx_ring, size); 8676 } 8677 8678 static int ixgbe_tx_map(struct ixgbe_ring *tx_ring, 8679 struct ixgbe_tx_buffer *first, 8680 const u8 hdr_len) 8681 { 8682 struct sk_buff *skb = first->skb; 8683 struct ixgbe_tx_buffer *tx_buffer; 8684 union ixgbe_adv_tx_desc *tx_desc; 8685 skb_frag_t *frag; 8686 dma_addr_t dma; 8687 unsigned int data_len, size; 8688 u32 tx_flags = first->tx_flags; 8689 u32 cmd_type = ixgbe_tx_cmd_type(skb, tx_flags); 8690 u16 i = tx_ring->next_to_use; 8691 8692 tx_desc = IXGBE_TX_DESC(tx_ring, i); 8693 8694 ixgbe_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len); 8695 8696 size = skb_headlen(skb); 8697 data_len = skb->data_len; 8698 8699 #ifdef IXGBE_FCOE 8700 if (tx_flags & IXGBE_TX_FLAGS_FCOE) { 8701 if (data_len < sizeof(struct fcoe_crc_eof)) { 8702 size -= sizeof(struct fcoe_crc_eof) - data_len; 8703 data_len = 0; 8704 } else { 8705 data_len -= sizeof(struct fcoe_crc_eof); 8706 } 8707 } 8708 8709 #endif 8710 dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); 8711 8712 tx_buffer = first; 8713 8714 for (frag = &skb_shinfo(skb)->frags[0];; frag++) { 8715 if (dma_mapping_error(tx_ring->dev, dma)) 8716 goto dma_error; 8717 8718 /* record length, and DMA address */ 8719 dma_unmap_len_set(tx_buffer, len, size); 8720 dma_unmap_addr_set(tx_buffer, dma, dma); 8721 8722 tx_desc->read.buffer_addr = cpu_to_le64(dma); 8723 8724 while (unlikely(size > IXGBE_MAX_DATA_PER_TXD)) { 8725 tx_desc->read.cmd_type_len = 8726 cpu_to_le32(cmd_type ^ IXGBE_MAX_DATA_PER_TXD); 8727 8728 i++; 8729 tx_desc++; 8730 if (i == tx_ring->count) { 8731 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 8732 i = 0; 8733 } 8734 tx_desc->read.olinfo_status = 0; 8735 8736 dma += IXGBE_MAX_DATA_PER_TXD; 8737 size -= IXGBE_MAX_DATA_PER_TXD; 8738 8739 tx_desc->read.buffer_addr = cpu_to_le64(dma); 8740 } 8741 8742 if (likely(!data_len)) 8743 break; 8744 8745 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size); 8746 8747 i++; 8748 tx_desc++; 8749 if (i == tx_ring->count) { 8750 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 8751 i = 0; 8752 } 8753 tx_desc->read.olinfo_status = 0; 8754 8755 #ifdef IXGBE_FCOE 8756 size = min_t(unsigned int, data_len, skb_frag_size(frag)); 8757 #else 8758 size = skb_frag_size(frag); 8759 #endif 8760 data_len -= size; 8761 8762 dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size, 8763 DMA_TO_DEVICE); 8764 8765 tx_buffer = &tx_ring->tx_buffer_info[i]; 8766 } 8767 8768 /* write last descriptor with RS and EOP bits */ 8769 cmd_type |= size | IXGBE_TXD_CMD; 8770 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 8771 8772 netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); 8773 8774 /* set the timestamp */ 8775 first->time_stamp = jiffies; 8776 8777 skb_tx_timestamp(skb); 8778 8779 /* 8780 * Force memory writes to complete before letting h/w know there 8781 * are new descriptors to fetch. (Only applicable for weak-ordered 8782 * memory model archs, such as IA-64). 8783 * 8784 * We also need this memory barrier to make certain all of the 8785 * status bits have been updated before next_to_watch is written. 8786 */ 8787 wmb(); 8788 8789 /* set next_to_watch value indicating a packet is present */ 8790 first->next_to_watch = tx_desc; 8791 8792 i++; 8793 if (i == tx_ring->count) 8794 i = 0; 8795 8796 tx_ring->next_to_use = i; 8797 8798 ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED); 8799 8800 if (netif_xmit_stopped(txring_txq(tx_ring)) || !netdev_xmit_more()) { 8801 writel(i, tx_ring->tail); 8802 } 8803 8804 return 0; 8805 dma_error: 8806 dev_err(tx_ring->dev, "TX DMA map failed\n"); 8807 8808 /* clear dma mappings for failed tx_buffer_info map */ 8809 for (;;) { 8810 tx_buffer = &tx_ring->tx_buffer_info[i]; 8811 if (dma_unmap_len(tx_buffer, len)) 8812 dma_unmap_page(tx_ring->dev, 8813 dma_unmap_addr(tx_buffer, dma), 8814 dma_unmap_len(tx_buffer, len), 8815 DMA_TO_DEVICE); 8816 dma_unmap_len_set(tx_buffer, len, 0); 8817 if (tx_buffer == first) 8818 break; 8819 if (i == 0) 8820 i += tx_ring->count; 8821 i--; 8822 } 8823 8824 dev_kfree_skb_any(first->skb); 8825 first->skb = NULL; 8826 8827 tx_ring->next_to_use = i; 8828 8829 return -1; 8830 } 8831 8832 static void ixgbe_atr(struct ixgbe_ring *ring, 8833 struct ixgbe_tx_buffer *first) 8834 { 8835 struct ixgbe_q_vector *q_vector = ring->q_vector; 8836 union ixgbe_atr_hash_dword input = { .dword = 0 }; 8837 union ixgbe_atr_hash_dword common = { .dword = 0 }; 8838 union { 8839 unsigned char *network; 8840 struct iphdr *ipv4; 8841 struct ipv6hdr *ipv6; 8842 } hdr; 8843 struct tcphdr *th; 8844 unsigned int hlen; 8845 struct sk_buff *skb; 8846 __be16 vlan_id; 8847 int l4_proto; 8848 8849 /* if ring doesn't have a interrupt vector, cannot perform ATR */ 8850 if (!q_vector) 8851 return; 8852 8853 /* do nothing if sampling is disabled */ 8854 if (!ring->atr_sample_rate) 8855 return; 8856 8857 ring->atr_count++; 8858 8859 /* currently only IPv4/IPv6 with TCP is supported */ 8860 if ((first->protocol != htons(ETH_P_IP)) && 8861 (first->protocol != htons(ETH_P_IPV6))) 8862 return; 8863 8864 /* snag network header to get L4 type and address */ 8865 skb = first->skb; 8866 hdr.network = skb_network_header(skb); 8867 if (unlikely(hdr.network <= skb->data)) 8868 return; 8869 if (skb->encapsulation && 8870 first->protocol == htons(ETH_P_IP) && 8871 hdr.ipv4->protocol == IPPROTO_UDP) { 8872 struct ixgbe_adapter *adapter = q_vector->adapter; 8873 8874 if (unlikely(skb_tail_pointer(skb) < hdr.network + 8875 vxlan_headroom(0))) 8876 return; 8877 8878 /* verify the port is recognized as VXLAN */ 8879 if (adapter->vxlan_port && 8880 udp_hdr(skb)->dest == adapter->vxlan_port) 8881 hdr.network = skb_inner_network_header(skb); 8882 8883 if (adapter->geneve_port && 8884 udp_hdr(skb)->dest == adapter->geneve_port) 8885 hdr.network = skb_inner_network_header(skb); 8886 } 8887 8888 /* Make sure we have at least [minimum IPv4 header + TCP] 8889 * or [IPv6 header] bytes 8890 */ 8891 if (unlikely(skb_tail_pointer(skb) < hdr.network + 40)) 8892 return; 8893 8894 /* Currently only IPv4/IPv6 with TCP is supported */ 8895 switch (hdr.ipv4->version) { 8896 case IPVERSION: 8897 /* access ihl as u8 to avoid unaligned access on ia64 */ 8898 hlen = (hdr.network[0] & 0x0F) << 2; 8899 l4_proto = hdr.ipv4->protocol; 8900 break; 8901 case 6: 8902 hlen = hdr.network - skb->data; 8903 l4_proto = ipv6_find_hdr(skb, &hlen, IPPROTO_TCP, NULL, NULL); 8904 hlen -= hdr.network - skb->data; 8905 break; 8906 default: 8907 return; 8908 } 8909 8910 if (l4_proto != IPPROTO_TCP) 8911 return; 8912 8913 if (unlikely(skb_tail_pointer(skb) < hdr.network + 8914 hlen + sizeof(struct tcphdr))) 8915 return; 8916 8917 th = (struct tcphdr *)(hdr.network + hlen); 8918 8919 /* skip this packet since the socket is closing */ 8920 if (th->fin) 8921 return; 8922 8923 /* sample on all syn packets or once every atr sample count */ 8924 if (!th->syn && (ring->atr_count < ring->atr_sample_rate)) 8925 return; 8926 8927 /* reset sample count */ 8928 ring->atr_count = 0; 8929 8930 vlan_id = htons(first->tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT); 8931 8932 /* 8933 * src and dst are inverted, think how the receiver sees them 8934 * 8935 * The input is broken into two sections, a non-compressed section 8936 * containing vm_pool, vlan_id, and flow_type. The rest of the data 8937 * is XORed together and stored in the compressed dword. 8938 */ 8939 input.formatted.vlan_id = vlan_id; 8940 8941 /* 8942 * since src port and flex bytes occupy the same word XOR them together 8943 * and write the value to source port portion of compressed dword 8944 */ 8945 if (first->tx_flags & (IXGBE_TX_FLAGS_SW_VLAN | IXGBE_TX_FLAGS_HW_VLAN)) 8946 common.port.src ^= th->dest ^ htons(ETH_P_8021Q); 8947 else 8948 common.port.src ^= th->dest ^ first->protocol; 8949 common.port.dst ^= th->source; 8950 8951 switch (hdr.ipv4->version) { 8952 case IPVERSION: 8953 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4; 8954 common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr; 8955 break; 8956 case 6: 8957 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6; 8958 common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^ 8959 hdr.ipv6->saddr.s6_addr32[1] ^ 8960 hdr.ipv6->saddr.s6_addr32[2] ^ 8961 hdr.ipv6->saddr.s6_addr32[3] ^ 8962 hdr.ipv6->daddr.s6_addr32[0] ^ 8963 hdr.ipv6->daddr.s6_addr32[1] ^ 8964 hdr.ipv6->daddr.s6_addr32[2] ^ 8965 hdr.ipv6->daddr.s6_addr32[3]; 8966 break; 8967 default: 8968 break; 8969 } 8970 8971 if (hdr.network != skb_network_header(skb)) 8972 input.formatted.flow_type |= IXGBE_ATR_L4TYPE_TUNNEL_MASK; 8973 8974 /* This assumes the Rx queue and Tx queue are bound to the same CPU */ 8975 ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw, 8976 input, common, ring->queue_index); 8977 } 8978 8979 #ifdef IXGBE_FCOE 8980 static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb, 8981 struct net_device *sb_dev) 8982 { 8983 struct ixgbe_adapter *adapter; 8984 struct ixgbe_ring_feature *f; 8985 int txq; 8986 8987 if (sb_dev) { 8988 u8 tc = netdev_get_prio_tc_map(dev, skb->priority); 8989 struct net_device *vdev = sb_dev; 8990 8991 txq = vdev->tc_to_txq[tc].offset; 8992 txq += reciprocal_scale(skb_get_hash(skb), 8993 vdev->tc_to_txq[tc].count); 8994 8995 return txq; 8996 } 8997 8998 /* 8999 * only execute the code below if protocol is FCoE 9000 * or FIP and we have FCoE enabled on the adapter 9001 */ 9002 switch (vlan_get_protocol(skb)) { 9003 case htons(ETH_P_FCOE): 9004 case htons(ETH_P_FIP): 9005 adapter = netdev_priv(dev); 9006 9007 if (!sb_dev && (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) 9008 break; 9009 fallthrough; 9010 default: 9011 return netdev_pick_tx(dev, skb, sb_dev); 9012 } 9013 9014 f = &adapter->ring_feature[RING_F_FCOE]; 9015 9016 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 9017 smp_processor_id(); 9018 9019 while (txq >= f->indices) 9020 txq -= f->indices; 9021 9022 return txq + f->offset; 9023 } 9024 9025 #endif 9026 int ixgbe_xmit_xdp_ring(struct ixgbe_ring *ring, 9027 struct xdp_frame *xdpf) 9028 { 9029 struct skb_shared_info *sinfo = xdp_get_shared_info_from_frame(xdpf); 9030 u8 nr_frags = unlikely(xdp_frame_has_frags(xdpf)) ? sinfo->nr_frags : 0; 9031 u16 i = 0, index = ring->next_to_use; 9032 struct ixgbe_tx_buffer *tx_head = &ring->tx_buffer_info[index]; 9033 struct ixgbe_tx_buffer *tx_buff = tx_head; 9034 union ixgbe_adv_tx_desc *tx_desc = IXGBE_TX_DESC(ring, index); 9035 u32 cmd_type, len = xdpf->len; 9036 void *data = xdpf->data; 9037 9038 if (unlikely(ixgbe_desc_unused(ring) < 1 + nr_frags)) 9039 return IXGBE_XDP_CONSUMED; 9040 9041 tx_head->bytecount = xdp_get_frame_len(xdpf); 9042 tx_head->gso_segs = 1; 9043 tx_head->xdpf = xdpf; 9044 9045 tx_desc->read.olinfo_status = 9046 cpu_to_le32(tx_head->bytecount << IXGBE_ADVTXD_PAYLEN_SHIFT); 9047 9048 for (;;) { 9049 dma_addr_t dma; 9050 9051 dma = dma_map_single(ring->dev, data, len, DMA_TO_DEVICE); 9052 if (dma_mapping_error(ring->dev, dma)) 9053 goto unmap; 9054 9055 dma_unmap_len_set(tx_buff, len, len); 9056 dma_unmap_addr_set(tx_buff, dma, dma); 9057 9058 cmd_type = IXGBE_ADVTXD_DTYP_DATA | IXGBE_ADVTXD_DCMD_DEXT | 9059 IXGBE_ADVTXD_DCMD_IFCS | len; 9060 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 9061 tx_desc->read.buffer_addr = cpu_to_le64(dma); 9062 tx_buff->protocol = 0; 9063 9064 if (++index == ring->count) 9065 index = 0; 9066 9067 if (i == nr_frags) 9068 break; 9069 9070 tx_buff = &ring->tx_buffer_info[index]; 9071 tx_desc = IXGBE_TX_DESC(ring, index); 9072 tx_desc->read.olinfo_status = 0; 9073 9074 data = skb_frag_address(&sinfo->frags[i]); 9075 len = skb_frag_size(&sinfo->frags[i]); 9076 i++; 9077 } 9078 /* put descriptor type bits */ 9079 tx_desc->read.cmd_type_len |= cpu_to_le32(IXGBE_TXD_CMD); 9080 9081 /* Avoid any potential race with xdp_xmit and cleanup */ 9082 smp_wmb(); 9083 9084 tx_head->next_to_watch = tx_desc; 9085 ring->next_to_use = index; 9086 9087 return IXGBE_XDP_TX; 9088 9089 unmap: 9090 for (;;) { 9091 tx_buff = &ring->tx_buffer_info[index]; 9092 if (dma_unmap_len(tx_buff, len)) 9093 dma_unmap_page(ring->dev, dma_unmap_addr(tx_buff, dma), 9094 dma_unmap_len(tx_buff, len), 9095 DMA_TO_DEVICE); 9096 dma_unmap_len_set(tx_buff, len, 0); 9097 if (tx_buff == tx_head) 9098 break; 9099 9100 if (!index) 9101 index += ring->count; 9102 index--; 9103 } 9104 9105 return IXGBE_XDP_CONSUMED; 9106 } 9107 9108 netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, 9109 struct ixgbe_adapter *adapter, 9110 struct ixgbe_ring *tx_ring) 9111 { 9112 struct ixgbe_tx_buffer *first; 9113 int tso; 9114 u32 tx_flags = 0; 9115 unsigned short f; 9116 u16 count = TXD_USE_COUNT(skb_headlen(skb)); 9117 struct ixgbe_ipsec_tx_data ipsec_tx = { 0 }; 9118 __be16 protocol = skb->protocol; 9119 u8 hdr_len = 0; 9120 9121 /* 9122 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD, 9123 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD, 9124 * + 2 desc gap to keep tail from touching head, 9125 * + 1 desc for context descriptor, 9126 * otherwise try next time 9127 */ 9128 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) 9129 count += TXD_USE_COUNT(skb_frag_size( 9130 &skb_shinfo(skb)->frags[f])); 9131 9132 if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) { 9133 tx_ring->tx_stats.tx_busy++; 9134 return NETDEV_TX_BUSY; 9135 } 9136 9137 /* record the location of the first descriptor for this packet */ 9138 first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; 9139 first->skb = skb; 9140 first->bytecount = skb->len; 9141 first->gso_segs = 1; 9142 9143 /* if we have a HW VLAN tag being added default to the HW one */ 9144 if (skb_vlan_tag_present(skb)) { 9145 tx_flags |= skb_vlan_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT; 9146 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; 9147 /* else if it is a SW VLAN check the next protocol and store the tag */ 9148 } else if (protocol == htons(ETH_P_8021Q)) { 9149 struct vlan_hdr *vhdr, _vhdr; 9150 vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr), &_vhdr); 9151 if (!vhdr) 9152 goto out_drop; 9153 9154 tx_flags |= ntohs(vhdr->h_vlan_TCI) << 9155 IXGBE_TX_FLAGS_VLAN_SHIFT; 9156 tx_flags |= IXGBE_TX_FLAGS_SW_VLAN; 9157 } 9158 protocol = vlan_get_protocol(skb); 9159 9160 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 9161 adapter->ptp_clock) { 9162 if (adapter->tstamp_config.tx_type == HWTSTAMP_TX_ON && 9163 !test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS, 9164 &adapter->state)) { 9165 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 9166 tx_flags |= IXGBE_TX_FLAGS_TSTAMP; 9167 9168 /* schedule check for Tx timestamp */ 9169 adapter->ptp_tx_skb = skb_get(skb); 9170 adapter->ptp_tx_start = jiffies; 9171 schedule_work(&adapter->ptp_tx_work); 9172 } else { 9173 adapter->tx_hwtstamp_skipped++; 9174 } 9175 } 9176 9177 #ifdef CONFIG_PCI_IOV 9178 /* 9179 * Use the l2switch_enable flag - would be false if the DMA 9180 * Tx switch had been disabled. 9181 */ 9182 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 9183 tx_flags |= IXGBE_TX_FLAGS_CC; 9184 9185 #endif 9186 /* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */ 9187 if ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && 9188 ((tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | IXGBE_TX_FLAGS_SW_VLAN)) || 9189 (skb->priority != TC_PRIO_CONTROL))) { 9190 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK; 9191 tx_flags |= (skb->priority & 0x7) << 9192 IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT; 9193 if (tx_flags & IXGBE_TX_FLAGS_SW_VLAN) { 9194 struct vlan_ethhdr *vhdr; 9195 9196 if (skb_cow_head(skb, 0)) 9197 goto out_drop; 9198 vhdr = skb_vlan_eth_hdr(skb); 9199 vhdr->h_vlan_TCI = htons(tx_flags >> 9200 IXGBE_TX_FLAGS_VLAN_SHIFT); 9201 } else { 9202 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; 9203 } 9204 } 9205 9206 /* record initial flags and protocol */ 9207 first->tx_flags = tx_flags; 9208 first->protocol = protocol; 9209 9210 #ifdef IXGBE_FCOE 9211 /* setup tx offload for FCoE */ 9212 if ((protocol == htons(ETH_P_FCOE)) && 9213 (tx_ring->netdev->features & (NETIF_F_FSO | NETIF_F_FCOE_CRC))) { 9214 tso = ixgbe_fso(tx_ring, first, &hdr_len); 9215 if (tso < 0) 9216 goto out_drop; 9217 9218 goto xmit_fcoe; 9219 } 9220 9221 #endif /* IXGBE_FCOE */ 9222 9223 #ifdef CONFIG_IXGBE_IPSEC 9224 if (xfrm_offload(skb) && 9225 !ixgbe_ipsec_tx(tx_ring, first, &ipsec_tx)) 9226 goto out_drop; 9227 #endif 9228 tso = ixgbe_tso(tx_ring, first, &hdr_len, &ipsec_tx); 9229 if (tso < 0) 9230 goto out_drop; 9231 else if (!tso) 9232 ixgbe_tx_csum(tx_ring, first, &ipsec_tx); 9233 9234 /* add the ATR filter if ATR is on */ 9235 if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state)) 9236 ixgbe_atr(tx_ring, first); 9237 9238 #ifdef IXGBE_FCOE 9239 xmit_fcoe: 9240 #endif /* IXGBE_FCOE */ 9241 if (ixgbe_tx_map(tx_ring, first, hdr_len)) 9242 goto cleanup_tx_timestamp; 9243 9244 return NETDEV_TX_OK; 9245 9246 out_drop: 9247 dev_kfree_skb_any(first->skb); 9248 first->skb = NULL; 9249 cleanup_tx_timestamp: 9250 if (unlikely(tx_flags & IXGBE_TX_FLAGS_TSTAMP)) { 9251 dev_kfree_skb_any(adapter->ptp_tx_skb); 9252 adapter->ptp_tx_skb = NULL; 9253 cancel_work_sync(&adapter->ptp_tx_work); 9254 clear_bit_unlock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state); 9255 } 9256 9257 return NETDEV_TX_OK; 9258 } 9259 9260 static netdev_tx_t __ixgbe_xmit_frame(struct sk_buff *skb, 9261 struct net_device *netdev, 9262 struct ixgbe_ring *ring) 9263 { 9264 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9265 struct ixgbe_ring *tx_ring; 9266 9267 /* 9268 * The minimum packet size for olinfo paylen is 17 so pad the skb 9269 * in order to meet this minimum size requirement. 9270 */ 9271 if (skb_put_padto(skb, 17)) 9272 return NETDEV_TX_OK; 9273 9274 tx_ring = ring ? ring : adapter->tx_ring[skb_get_queue_mapping(skb)]; 9275 if (unlikely(test_bit(__IXGBE_TX_DISABLED, &tx_ring->state))) 9276 return NETDEV_TX_BUSY; 9277 9278 return ixgbe_xmit_frame_ring(skb, adapter, tx_ring); 9279 } 9280 9281 static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, 9282 struct net_device *netdev) 9283 { 9284 return __ixgbe_xmit_frame(skb, netdev, NULL); 9285 } 9286 9287 /** 9288 * ixgbe_set_mac - Change the Ethernet Address of the NIC 9289 * @netdev: network interface device structure 9290 * @p: pointer to an address structure 9291 * 9292 * Returns 0 on success, negative on failure 9293 **/ 9294 static int ixgbe_set_mac(struct net_device *netdev, void *p) 9295 { 9296 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9297 struct ixgbe_hw *hw = &adapter->hw; 9298 struct sockaddr *addr = p; 9299 9300 if (!is_valid_ether_addr(addr->sa_data)) 9301 return -EADDRNOTAVAIL; 9302 9303 eth_hw_addr_set(netdev, addr->sa_data); 9304 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); 9305 9306 ixgbe_mac_set_default_filter(adapter); 9307 9308 return 0; 9309 } 9310 9311 static int 9312 ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr) 9313 { 9314 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9315 struct ixgbe_hw *hw = &adapter->hw; 9316 u16 value; 9317 int rc; 9318 9319 if (adapter->mii_bus) { 9320 int regnum = addr; 9321 9322 if (devad != MDIO_DEVAD_NONE) 9323 return mdiobus_c45_read(adapter->mii_bus, prtad, 9324 devad, regnum); 9325 9326 return mdiobus_read(adapter->mii_bus, prtad, regnum); 9327 } 9328 9329 if (prtad != hw->phy.mdio.prtad) 9330 return -EINVAL; 9331 rc = hw->phy.ops.read_reg(hw, addr, devad, &value); 9332 if (!rc) 9333 rc = value; 9334 return rc; 9335 } 9336 9337 static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad, 9338 u16 addr, u16 value) 9339 { 9340 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9341 struct ixgbe_hw *hw = &adapter->hw; 9342 9343 if (adapter->mii_bus) { 9344 int regnum = addr; 9345 9346 if (devad != MDIO_DEVAD_NONE) 9347 return mdiobus_c45_write(adapter->mii_bus, prtad, devad, 9348 regnum, value); 9349 9350 return mdiobus_write(adapter->mii_bus, prtad, regnum, value); 9351 } 9352 9353 if (prtad != hw->phy.mdio.prtad) 9354 return -EINVAL; 9355 return hw->phy.ops.write_reg(hw, addr, devad, value); 9356 } 9357 9358 static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd) 9359 { 9360 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9361 9362 switch (cmd) { 9363 case SIOCSHWTSTAMP: 9364 return ixgbe_ptp_set_ts_config(adapter, req); 9365 case SIOCGHWTSTAMP: 9366 return ixgbe_ptp_get_ts_config(adapter, req); 9367 case SIOCGMIIPHY: 9368 if (!adapter->hw.phy.ops.read_reg) 9369 return -EOPNOTSUPP; 9370 fallthrough; 9371 default: 9372 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd); 9373 } 9374 } 9375 9376 /** 9377 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding 9378 * netdev->dev_addrs 9379 * @dev: network interface device structure 9380 * 9381 * Returns non-zero on failure 9382 **/ 9383 static int ixgbe_add_sanmac_netdev(struct net_device *dev) 9384 { 9385 int err = 0; 9386 struct ixgbe_adapter *adapter = netdev_priv(dev); 9387 struct ixgbe_hw *hw = &adapter->hw; 9388 9389 if (is_valid_ether_addr(hw->mac.san_addr)) { 9390 rtnl_lock(); 9391 err = dev_addr_add(dev, hw->mac.san_addr, NETDEV_HW_ADDR_T_SAN); 9392 rtnl_unlock(); 9393 9394 /* update SAN MAC vmdq pool selection */ 9395 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0)); 9396 } 9397 return err; 9398 } 9399 9400 /** 9401 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding 9402 * netdev->dev_addrs 9403 * @dev: network interface device structure 9404 * 9405 * Returns non-zero on failure 9406 **/ 9407 static int ixgbe_del_sanmac_netdev(struct net_device *dev) 9408 { 9409 int err = 0; 9410 struct ixgbe_adapter *adapter = netdev_priv(dev); 9411 struct ixgbe_mac_info *mac = &adapter->hw.mac; 9412 9413 if (is_valid_ether_addr(mac->san_addr)) { 9414 rtnl_lock(); 9415 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN); 9416 rtnl_unlock(); 9417 } 9418 return err; 9419 } 9420 9421 static void ixgbe_get_ring_stats64(struct rtnl_link_stats64 *stats, 9422 struct ixgbe_ring *ring) 9423 { 9424 u64 bytes, packets; 9425 unsigned int start; 9426 9427 if (ring) { 9428 do { 9429 start = u64_stats_fetch_begin(&ring->syncp); 9430 packets = ring->stats.packets; 9431 bytes = ring->stats.bytes; 9432 } while (u64_stats_fetch_retry(&ring->syncp, start)); 9433 stats->tx_packets += packets; 9434 stats->tx_bytes += bytes; 9435 } 9436 } 9437 9438 static void ixgbe_get_stats64(struct net_device *netdev, 9439 struct rtnl_link_stats64 *stats) 9440 { 9441 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9442 int i; 9443 9444 rcu_read_lock(); 9445 for (i = 0; i < adapter->num_rx_queues; i++) { 9446 struct ixgbe_ring *ring = READ_ONCE(adapter->rx_ring[i]); 9447 u64 bytes, packets; 9448 unsigned int start; 9449 9450 if (ring) { 9451 do { 9452 start = u64_stats_fetch_begin(&ring->syncp); 9453 packets = ring->stats.packets; 9454 bytes = ring->stats.bytes; 9455 } while (u64_stats_fetch_retry(&ring->syncp, start)); 9456 stats->rx_packets += packets; 9457 stats->rx_bytes += bytes; 9458 } 9459 } 9460 9461 for (i = 0; i < adapter->num_tx_queues; i++) { 9462 struct ixgbe_ring *ring = READ_ONCE(adapter->tx_ring[i]); 9463 9464 ixgbe_get_ring_stats64(stats, ring); 9465 } 9466 for (i = 0; i < adapter->num_xdp_queues; i++) { 9467 struct ixgbe_ring *ring = READ_ONCE(adapter->xdp_ring[i]); 9468 9469 ixgbe_get_ring_stats64(stats, ring); 9470 } 9471 rcu_read_unlock(); 9472 9473 /* following stats updated by ixgbe_watchdog_task() */ 9474 stats->multicast = netdev->stats.multicast; 9475 stats->rx_errors = netdev->stats.rx_errors; 9476 stats->rx_length_errors = netdev->stats.rx_length_errors; 9477 stats->rx_crc_errors = netdev->stats.rx_crc_errors; 9478 stats->rx_missed_errors = netdev->stats.rx_missed_errors; 9479 } 9480 9481 static int ixgbe_ndo_get_vf_stats(struct net_device *netdev, int vf, 9482 struct ifla_vf_stats *vf_stats) 9483 { 9484 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9485 9486 if (vf < 0 || vf >= adapter->num_vfs) 9487 return -EINVAL; 9488 9489 vf_stats->rx_packets = adapter->vfinfo[vf].vfstats.gprc; 9490 vf_stats->rx_bytes = adapter->vfinfo[vf].vfstats.gorc; 9491 vf_stats->tx_packets = adapter->vfinfo[vf].vfstats.gptc; 9492 vf_stats->tx_bytes = adapter->vfinfo[vf].vfstats.gotc; 9493 vf_stats->multicast = adapter->vfinfo[vf].vfstats.mprc; 9494 9495 return 0; 9496 } 9497 9498 #ifdef CONFIG_IXGBE_DCB 9499 /** 9500 * ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid. 9501 * @adapter: pointer to ixgbe_adapter 9502 * @tc: number of traffic classes currently enabled 9503 * 9504 * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm 9505 * 802.1Q priority maps to a packet buffer that exists. 9506 */ 9507 static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc) 9508 { 9509 struct ixgbe_hw *hw = &adapter->hw; 9510 u32 reg, rsave; 9511 int i; 9512 9513 /* 82598 have a static priority to TC mapping that can not 9514 * be changed so no validation is needed. 9515 */ 9516 if (hw->mac.type == ixgbe_mac_82598EB) 9517 return; 9518 9519 reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC); 9520 rsave = reg; 9521 9522 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { 9523 u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT); 9524 9525 /* If up2tc is out of bounds default to zero */ 9526 if (up2tc > tc) 9527 reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT); 9528 } 9529 9530 if (reg != rsave) 9531 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg); 9532 9533 return; 9534 } 9535 9536 /** 9537 * ixgbe_set_prio_tc_map - Configure netdev prio tc map 9538 * @adapter: Pointer to adapter struct 9539 * 9540 * Populate the netdev user priority to tc map 9541 */ 9542 static void ixgbe_set_prio_tc_map(struct ixgbe_adapter *adapter) 9543 { 9544 struct net_device *dev = adapter->netdev; 9545 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg; 9546 struct ieee_ets *ets = adapter->ixgbe_ieee_ets; 9547 u8 prio; 9548 9549 for (prio = 0; prio < MAX_USER_PRIORITY; prio++) { 9550 u8 tc = 0; 9551 9552 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) 9553 tc = ixgbe_dcb_get_tc_from_up(dcb_cfg, 0, prio); 9554 else if (ets) 9555 tc = ets->prio_tc[prio]; 9556 9557 netdev_set_prio_tc_map(dev, prio, tc); 9558 } 9559 } 9560 9561 #endif /* CONFIG_IXGBE_DCB */ 9562 static int ixgbe_reassign_macvlan_pool(struct net_device *vdev, 9563 struct netdev_nested_priv *priv) 9564 { 9565 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)priv->data; 9566 struct ixgbe_fwd_adapter *accel; 9567 int pool; 9568 9569 /* we only care about macvlans... */ 9570 if (!netif_is_macvlan(vdev)) 9571 return 0; 9572 9573 /* that have hardware offload enabled... */ 9574 accel = macvlan_accel_priv(vdev); 9575 if (!accel) 9576 return 0; 9577 9578 /* If we can relocate to a different bit do so */ 9579 pool = find_first_zero_bit(adapter->fwd_bitmask, adapter->num_rx_pools); 9580 if (pool < adapter->num_rx_pools) { 9581 set_bit(pool, adapter->fwd_bitmask); 9582 accel->pool = pool; 9583 return 0; 9584 } 9585 9586 /* if we cannot find a free pool then disable the offload */ 9587 netdev_err(vdev, "L2FW offload disabled due to lack of queue resources\n"); 9588 macvlan_release_l2fw_offload(vdev); 9589 9590 /* unbind the queues and drop the subordinate channel config */ 9591 netdev_unbind_sb_channel(adapter->netdev, vdev); 9592 netdev_set_sb_channel(vdev, 0); 9593 9594 kfree(accel); 9595 9596 return 0; 9597 } 9598 9599 static void ixgbe_defrag_macvlan_pools(struct net_device *dev) 9600 { 9601 struct ixgbe_adapter *adapter = netdev_priv(dev); 9602 struct netdev_nested_priv priv = { 9603 .data = (void *)adapter, 9604 }; 9605 9606 /* flush any stale bits out of the fwd bitmask */ 9607 bitmap_clear(adapter->fwd_bitmask, 1, 63); 9608 9609 /* walk through upper devices reassigning pools */ 9610 netdev_walk_all_upper_dev_rcu(dev, ixgbe_reassign_macvlan_pool, 9611 &priv); 9612 } 9613 9614 /** 9615 * ixgbe_setup_tc - configure net_device for multiple traffic classes 9616 * 9617 * @dev: net device to configure 9618 * @tc: number of traffic classes to enable 9619 */ 9620 int ixgbe_setup_tc(struct net_device *dev, u8 tc) 9621 { 9622 struct ixgbe_adapter *adapter = netdev_priv(dev); 9623 struct ixgbe_hw *hw = &adapter->hw; 9624 9625 /* Hardware supports up to 8 traffic classes */ 9626 if (tc > adapter->dcb_cfg.num_tcs.pg_tcs) 9627 return -EINVAL; 9628 9629 if (hw->mac.type == ixgbe_mac_82598EB && tc && tc < MAX_TRAFFIC_CLASS) 9630 return -EINVAL; 9631 9632 /* Hardware has to reinitialize queues and interrupts to 9633 * match packet buffer alignment. Unfortunately, the 9634 * hardware is not flexible enough to do this dynamically. 9635 */ 9636 if (netif_running(dev)) 9637 ixgbe_close(dev); 9638 else 9639 ixgbe_reset(adapter); 9640 9641 ixgbe_clear_interrupt_scheme(adapter); 9642 9643 #ifdef CONFIG_IXGBE_DCB 9644 if (tc) { 9645 if (adapter->xdp_prog) { 9646 e_warn(probe, "DCB is not supported with XDP\n"); 9647 9648 ixgbe_init_interrupt_scheme(adapter); 9649 if (netif_running(dev)) 9650 ixgbe_open(dev); 9651 return -EINVAL; 9652 } 9653 9654 netdev_set_num_tc(dev, tc); 9655 ixgbe_set_prio_tc_map(adapter); 9656 9657 adapter->hw_tcs = tc; 9658 adapter->flags |= IXGBE_FLAG_DCB_ENABLED; 9659 9660 if (adapter->hw.mac.type == ixgbe_mac_82598EB) { 9661 adapter->last_lfc_mode = adapter->hw.fc.requested_mode; 9662 adapter->hw.fc.requested_mode = ixgbe_fc_none; 9663 } 9664 } else { 9665 netdev_reset_tc(dev); 9666 9667 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 9668 adapter->hw.fc.requested_mode = adapter->last_lfc_mode; 9669 9670 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; 9671 adapter->hw_tcs = tc; 9672 9673 adapter->temp_dcb_cfg.pfc_mode_enable = false; 9674 adapter->dcb_cfg.pfc_mode_enable = false; 9675 } 9676 9677 ixgbe_validate_rtr(adapter, tc); 9678 9679 #endif /* CONFIG_IXGBE_DCB */ 9680 ixgbe_init_interrupt_scheme(adapter); 9681 9682 ixgbe_defrag_macvlan_pools(dev); 9683 9684 if (netif_running(dev)) 9685 return ixgbe_open(dev); 9686 9687 return 0; 9688 } 9689 9690 static int ixgbe_delete_clsu32(struct ixgbe_adapter *adapter, 9691 struct tc_cls_u32_offload *cls) 9692 { 9693 u32 hdl = cls->knode.handle; 9694 u32 uhtid = TC_U32_USERHTID(cls->knode.handle); 9695 u32 loc = cls->knode.handle & 0xfffff; 9696 int err = 0, i, j; 9697 struct ixgbe_jump_table *jump = NULL; 9698 9699 if (loc > IXGBE_MAX_HW_ENTRIES) 9700 return -EINVAL; 9701 9702 if ((uhtid != 0x800) && (uhtid >= IXGBE_MAX_LINK_HANDLE)) 9703 return -EINVAL; 9704 9705 /* Clear this filter in the link data it is associated with */ 9706 if (uhtid != 0x800) { 9707 jump = adapter->jump_tables[uhtid]; 9708 if (!jump) 9709 return -EINVAL; 9710 if (!test_bit(loc - 1, jump->child_loc_map)) 9711 return -EINVAL; 9712 clear_bit(loc - 1, jump->child_loc_map); 9713 } 9714 9715 /* Check if the filter being deleted is a link */ 9716 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { 9717 jump = adapter->jump_tables[i]; 9718 if (jump && jump->link_hdl == hdl) { 9719 /* Delete filters in the hardware in the child hash 9720 * table associated with this link 9721 */ 9722 for (j = 0; j < IXGBE_MAX_HW_ENTRIES; j++) { 9723 if (!test_bit(j, jump->child_loc_map)) 9724 continue; 9725 spin_lock(&adapter->fdir_perfect_lock); 9726 err = ixgbe_update_ethtool_fdir_entry(adapter, 9727 NULL, 9728 j + 1); 9729 spin_unlock(&adapter->fdir_perfect_lock); 9730 clear_bit(j, jump->child_loc_map); 9731 } 9732 /* Remove resources for this link */ 9733 kfree(jump->input); 9734 kfree(jump->mask); 9735 kfree(jump); 9736 adapter->jump_tables[i] = NULL; 9737 return err; 9738 } 9739 } 9740 9741 spin_lock(&adapter->fdir_perfect_lock); 9742 err = ixgbe_update_ethtool_fdir_entry(adapter, NULL, loc); 9743 spin_unlock(&adapter->fdir_perfect_lock); 9744 return err; 9745 } 9746 9747 static int ixgbe_configure_clsu32_add_hnode(struct ixgbe_adapter *adapter, 9748 struct tc_cls_u32_offload *cls) 9749 { 9750 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); 9751 9752 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 9753 return -EINVAL; 9754 9755 /* This ixgbe devices do not support hash tables at the moment 9756 * so abort when given hash tables. 9757 */ 9758 if (cls->hnode.divisor > 0) 9759 return -EINVAL; 9760 9761 set_bit(uhtid - 1, &adapter->tables); 9762 return 0; 9763 } 9764 9765 static int ixgbe_configure_clsu32_del_hnode(struct ixgbe_adapter *adapter, 9766 struct tc_cls_u32_offload *cls) 9767 { 9768 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); 9769 9770 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 9771 return -EINVAL; 9772 9773 clear_bit(uhtid - 1, &adapter->tables); 9774 return 0; 9775 } 9776 9777 #ifdef CONFIG_NET_CLS_ACT 9778 struct upper_walk_data { 9779 struct ixgbe_adapter *adapter; 9780 u64 action; 9781 int ifindex; 9782 u8 queue; 9783 }; 9784 9785 static int get_macvlan_queue(struct net_device *upper, 9786 struct netdev_nested_priv *priv) 9787 { 9788 if (netif_is_macvlan(upper)) { 9789 struct ixgbe_fwd_adapter *vadapter = macvlan_accel_priv(upper); 9790 struct ixgbe_adapter *adapter; 9791 struct upper_walk_data *data; 9792 int ifindex; 9793 9794 data = (struct upper_walk_data *)priv->data; 9795 ifindex = data->ifindex; 9796 adapter = data->adapter; 9797 if (vadapter && upper->ifindex == ifindex) { 9798 data->queue = adapter->rx_ring[vadapter->rx_base_queue]->reg_idx; 9799 data->action = data->queue; 9800 return 1; 9801 } 9802 } 9803 9804 return 0; 9805 } 9806 9807 static int handle_redirect_action(struct ixgbe_adapter *adapter, int ifindex, 9808 u8 *queue, u64 *action) 9809 { 9810 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 9811 unsigned int num_vfs = adapter->num_vfs, vf; 9812 struct netdev_nested_priv priv; 9813 struct upper_walk_data data; 9814 struct net_device *upper; 9815 9816 /* redirect to a SRIOV VF */ 9817 for (vf = 0; vf < num_vfs; ++vf) { 9818 upper = pci_get_drvdata(adapter->vfinfo[vf].vfdev); 9819 if (upper->ifindex == ifindex) { 9820 *queue = vf * __ALIGN_MASK(1, ~vmdq->mask); 9821 *action = vf + 1; 9822 *action <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF; 9823 return 0; 9824 } 9825 } 9826 9827 /* redirect to a offloaded macvlan netdev */ 9828 data.adapter = adapter; 9829 data.ifindex = ifindex; 9830 data.action = 0; 9831 data.queue = 0; 9832 priv.data = (void *)&data; 9833 if (netdev_walk_all_upper_dev_rcu(adapter->netdev, 9834 get_macvlan_queue, &priv)) { 9835 *action = data.action; 9836 *queue = data.queue; 9837 9838 return 0; 9839 } 9840 9841 return -EINVAL; 9842 } 9843 9844 static int parse_tc_actions(struct ixgbe_adapter *adapter, 9845 struct tcf_exts *exts, u64 *action, u8 *queue) 9846 { 9847 const struct tc_action *a; 9848 int i; 9849 9850 if (!tcf_exts_has_actions(exts)) 9851 return -EINVAL; 9852 9853 tcf_exts_for_each_action(i, a, exts) { 9854 /* Drop action */ 9855 if (is_tcf_gact_shot(a)) { 9856 *action = IXGBE_FDIR_DROP_QUEUE; 9857 *queue = IXGBE_FDIR_DROP_QUEUE; 9858 return 0; 9859 } 9860 9861 /* Redirect to a VF or a offloaded macvlan */ 9862 if (is_tcf_mirred_egress_redirect(a)) { 9863 struct net_device *dev = tcf_mirred_dev(a); 9864 9865 if (!dev) 9866 return -EINVAL; 9867 return handle_redirect_action(adapter, dev->ifindex, 9868 queue, action); 9869 } 9870 9871 return -EINVAL; 9872 } 9873 9874 return -EINVAL; 9875 } 9876 #else 9877 static int parse_tc_actions(struct ixgbe_adapter *adapter, 9878 struct tcf_exts *exts, u64 *action, u8 *queue) 9879 { 9880 return -EINVAL; 9881 } 9882 #endif /* CONFIG_NET_CLS_ACT */ 9883 9884 static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter *input, 9885 union ixgbe_atr_input *mask, 9886 struct tc_cls_u32_offload *cls, 9887 struct ixgbe_mat_field *field_ptr, 9888 struct ixgbe_nexthdr *nexthdr) 9889 { 9890 int i, j, off; 9891 __be32 val, m; 9892 bool found_entry = false, found_jump_field = false; 9893 9894 for (i = 0; i < cls->knode.sel->nkeys; i++) { 9895 off = cls->knode.sel->keys[i].off; 9896 val = cls->knode.sel->keys[i].val; 9897 m = cls->knode.sel->keys[i].mask; 9898 9899 for (j = 0; field_ptr[j].val; j++) { 9900 if (field_ptr[j].off == off) { 9901 field_ptr[j].val(input, mask, (__force u32)val, 9902 (__force u32)m); 9903 input->filter.formatted.flow_type |= 9904 field_ptr[j].type; 9905 found_entry = true; 9906 break; 9907 } 9908 } 9909 if (nexthdr) { 9910 if (nexthdr->off == cls->knode.sel->keys[i].off && 9911 nexthdr->val == 9912 (__force u32)cls->knode.sel->keys[i].val && 9913 nexthdr->mask == 9914 (__force u32)cls->knode.sel->keys[i].mask) 9915 found_jump_field = true; 9916 else 9917 continue; 9918 } 9919 } 9920 9921 if (nexthdr && !found_jump_field) 9922 return -EINVAL; 9923 9924 if (!found_entry) 9925 return 0; 9926 9927 mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK | 9928 IXGBE_ATR_L4TYPE_MASK; 9929 9930 if (input->filter.formatted.flow_type == IXGBE_ATR_FLOW_TYPE_IPV4) 9931 mask->formatted.flow_type &= IXGBE_ATR_L4TYPE_IPV6_MASK; 9932 9933 return 0; 9934 } 9935 9936 static int ixgbe_configure_clsu32(struct ixgbe_adapter *adapter, 9937 struct tc_cls_u32_offload *cls) 9938 { 9939 __be16 protocol = cls->common.protocol; 9940 u32 loc = cls->knode.handle & 0xfffff; 9941 struct ixgbe_hw *hw = &adapter->hw; 9942 struct ixgbe_mat_field *field_ptr; 9943 struct ixgbe_fdir_filter *input = NULL; 9944 union ixgbe_atr_input *mask = NULL; 9945 struct ixgbe_jump_table *jump = NULL; 9946 int i, err = -EINVAL; 9947 u8 queue; 9948 u32 uhtid, link_uhtid; 9949 9950 uhtid = TC_U32_USERHTID(cls->knode.handle); 9951 link_uhtid = TC_U32_USERHTID(cls->knode.link_handle); 9952 9953 /* At the moment cls_u32 jumps to network layer and skips past 9954 * L2 headers. The canonical method to match L2 frames is to use 9955 * negative values. However this is error prone at best but really 9956 * just broken because there is no way to "know" what sort of hdr 9957 * is in front of the network layer. Fix cls_u32 to support L2 9958 * headers when needed. 9959 */ 9960 if (protocol != htons(ETH_P_IP)) 9961 return err; 9962 9963 if (loc >= ((1024 << adapter->fdir_pballoc) - 2)) { 9964 e_err(drv, "Location out of range\n"); 9965 return err; 9966 } 9967 9968 /* cls u32 is a graph starting at root node 0x800. The driver tracks 9969 * links and also the fields used to advance the parser across each 9970 * link (e.g. nexthdr/eat parameters from 'tc'). This way we can map 9971 * the u32 graph onto the hardware parse graph denoted in ixgbe_model.h 9972 * To add support for new nodes update ixgbe_model.h parse structures 9973 * this function _should_ be generic try not to hardcode values here. 9974 */ 9975 if (uhtid == 0x800) { 9976 field_ptr = (adapter->jump_tables[0])->mat; 9977 } else { 9978 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 9979 return err; 9980 if (!adapter->jump_tables[uhtid]) 9981 return err; 9982 field_ptr = (adapter->jump_tables[uhtid])->mat; 9983 } 9984 9985 if (!field_ptr) 9986 return err; 9987 9988 /* At this point we know the field_ptr is valid and need to either 9989 * build cls_u32 link or attach filter. Because adding a link to 9990 * a handle that does not exist is invalid and the same for adding 9991 * rules to handles that don't exist. 9992 */ 9993 9994 if (link_uhtid) { 9995 struct ixgbe_nexthdr *nexthdr = ixgbe_ipv4_jumps; 9996 9997 if (link_uhtid >= IXGBE_MAX_LINK_HANDLE) 9998 return err; 9999 10000 if (!test_bit(link_uhtid - 1, &adapter->tables)) 10001 return err; 10002 10003 /* Multiple filters as links to the same hash table are not 10004 * supported. To add a new filter with the same next header 10005 * but different match/jump conditions, create a new hash table 10006 * and link to it. 10007 */ 10008 if (adapter->jump_tables[link_uhtid] && 10009 (adapter->jump_tables[link_uhtid])->link_hdl) { 10010 e_err(drv, "Link filter exists for link: %x\n", 10011 link_uhtid); 10012 return err; 10013 } 10014 10015 for (i = 0; nexthdr[i].jump; i++) { 10016 if (nexthdr[i].o != cls->knode.sel->offoff || 10017 nexthdr[i].s != cls->knode.sel->offshift || 10018 nexthdr[i].m != 10019 (__force u32)cls->knode.sel->offmask) 10020 return err; 10021 10022 jump = kzalloc(sizeof(*jump), GFP_KERNEL); 10023 if (!jump) 10024 return -ENOMEM; 10025 input = kzalloc(sizeof(*input), GFP_KERNEL); 10026 if (!input) { 10027 err = -ENOMEM; 10028 goto free_jump; 10029 } 10030 mask = kzalloc(sizeof(*mask), GFP_KERNEL); 10031 if (!mask) { 10032 err = -ENOMEM; 10033 goto free_input; 10034 } 10035 jump->input = input; 10036 jump->mask = mask; 10037 jump->link_hdl = cls->knode.handle; 10038 10039 err = ixgbe_clsu32_build_input(input, mask, cls, 10040 field_ptr, &nexthdr[i]); 10041 if (!err) { 10042 jump->mat = nexthdr[i].jump; 10043 adapter->jump_tables[link_uhtid] = jump; 10044 break; 10045 } else { 10046 kfree(mask); 10047 kfree(input); 10048 kfree(jump); 10049 } 10050 } 10051 return 0; 10052 } 10053 10054 input = kzalloc(sizeof(*input), GFP_KERNEL); 10055 if (!input) 10056 return -ENOMEM; 10057 mask = kzalloc(sizeof(*mask), GFP_KERNEL); 10058 if (!mask) { 10059 err = -ENOMEM; 10060 goto free_input; 10061 } 10062 10063 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) { 10064 if ((adapter->jump_tables[uhtid])->input) 10065 memcpy(input, (adapter->jump_tables[uhtid])->input, 10066 sizeof(*input)); 10067 if ((adapter->jump_tables[uhtid])->mask) 10068 memcpy(mask, (adapter->jump_tables[uhtid])->mask, 10069 sizeof(*mask)); 10070 10071 /* Lookup in all child hash tables if this location is already 10072 * filled with a filter 10073 */ 10074 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { 10075 struct ixgbe_jump_table *link = adapter->jump_tables[i]; 10076 10077 if (link && (test_bit(loc - 1, link->child_loc_map))) { 10078 e_err(drv, "Filter exists in location: %x\n", 10079 loc); 10080 err = -EINVAL; 10081 goto err_out; 10082 } 10083 } 10084 } 10085 err = ixgbe_clsu32_build_input(input, mask, cls, field_ptr, NULL); 10086 if (err) 10087 goto err_out; 10088 10089 err = parse_tc_actions(adapter, cls->knode.exts, &input->action, 10090 &queue); 10091 if (err < 0) 10092 goto err_out; 10093 10094 input->sw_idx = loc; 10095 10096 spin_lock(&adapter->fdir_perfect_lock); 10097 10098 if (hlist_empty(&adapter->fdir_filter_list)) { 10099 memcpy(&adapter->fdir_mask, mask, sizeof(*mask)); 10100 err = ixgbe_fdir_set_input_mask_82599(hw, mask); 10101 if (err) 10102 goto err_out_w_lock; 10103 } else if (memcmp(&adapter->fdir_mask, mask, sizeof(*mask))) { 10104 err = -EINVAL; 10105 goto err_out_w_lock; 10106 } 10107 10108 ixgbe_atr_compute_perfect_hash_82599(&input->filter, mask); 10109 err = ixgbe_fdir_write_perfect_filter_82599(hw, &input->filter, 10110 input->sw_idx, queue); 10111 if (err) 10112 goto err_out_w_lock; 10113 10114 ixgbe_update_ethtool_fdir_entry(adapter, input, input->sw_idx); 10115 spin_unlock(&adapter->fdir_perfect_lock); 10116 10117 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) 10118 set_bit(loc - 1, (adapter->jump_tables[uhtid])->child_loc_map); 10119 10120 kfree(mask); 10121 return err; 10122 err_out_w_lock: 10123 spin_unlock(&adapter->fdir_perfect_lock); 10124 err_out: 10125 kfree(mask); 10126 free_input: 10127 kfree(input); 10128 free_jump: 10129 kfree(jump); 10130 return err; 10131 } 10132 10133 static int ixgbe_setup_tc_cls_u32(struct ixgbe_adapter *adapter, 10134 struct tc_cls_u32_offload *cls_u32) 10135 { 10136 switch (cls_u32->command) { 10137 case TC_CLSU32_NEW_KNODE: 10138 case TC_CLSU32_REPLACE_KNODE: 10139 return ixgbe_configure_clsu32(adapter, cls_u32); 10140 case TC_CLSU32_DELETE_KNODE: 10141 return ixgbe_delete_clsu32(adapter, cls_u32); 10142 case TC_CLSU32_NEW_HNODE: 10143 case TC_CLSU32_REPLACE_HNODE: 10144 return ixgbe_configure_clsu32_add_hnode(adapter, cls_u32); 10145 case TC_CLSU32_DELETE_HNODE: 10146 return ixgbe_configure_clsu32_del_hnode(adapter, cls_u32); 10147 default: 10148 return -EOPNOTSUPP; 10149 } 10150 } 10151 10152 static int ixgbe_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 10153 void *cb_priv) 10154 { 10155 struct ixgbe_adapter *adapter = cb_priv; 10156 10157 if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) 10158 return -EOPNOTSUPP; 10159 10160 switch (type) { 10161 case TC_SETUP_CLSU32: 10162 return ixgbe_setup_tc_cls_u32(adapter, type_data); 10163 default: 10164 return -EOPNOTSUPP; 10165 } 10166 } 10167 10168 static int ixgbe_setup_tc_mqprio(struct net_device *dev, 10169 struct tc_mqprio_qopt *mqprio) 10170 { 10171 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; 10172 return ixgbe_setup_tc(dev, mqprio->num_tc); 10173 } 10174 10175 static LIST_HEAD(ixgbe_block_cb_list); 10176 10177 static int __ixgbe_setup_tc(struct net_device *dev, enum tc_setup_type type, 10178 void *type_data) 10179 { 10180 struct ixgbe_adapter *adapter = netdev_priv(dev); 10181 10182 switch (type) { 10183 case TC_SETUP_BLOCK: 10184 return flow_block_cb_setup_simple(type_data, 10185 &ixgbe_block_cb_list, 10186 ixgbe_setup_tc_block_cb, 10187 adapter, adapter, true); 10188 case TC_SETUP_QDISC_MQPRIO: 10189 return ixgbe_setup_tc_mqprio(dev, type_data); 10190 default: 10191 return -EOPNOTSUPP; 10192 } 10193 } 10194 10195 #ifdef CONFIG_PCI_IOV 10196 void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter) 10197 { 10198 struct net_device *netdev = adapter->netdev; 10199 10200 rtnl_lock(); 10201 ixgbe_setup_tc(netdev, adapter->hw_tcs); 10202 rtnl_unlock(); 10203 } 10204 10205 #endif 10206 void ixgbe_do_reset(struct net_device *netdev) 10207 { 10208 struct ixgbe_adapter *adapter = netdev_priv(netdev); 10209 10210 if (netif_running(netdev)) 10211 ixgbe_reinit_locked(adapter); 10212 else 10213 ixgbe_reset(adapter); 10214 } 10215 10216 static netdev_features_t ixgbe_fix_features(struct net_device *netdev, 10217 netdev_features_t features) 10218 { 10219 struct ixgbe_adapter *adapter = netdev_priv(netdev); 10220 10221 /* If Rx checksum is disabled, then RSC/LRO should also be disabled */ 10222 if (!(features & NETIF_F_RXCSUM)) 10223 features &= ~NETIF_F_LRO; 10224 10225 /* Turn off LRO if not RSC capable */ 10226 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)) 10227 features &= ~NETIF_F_LRO; 10228 10229 if (adapter->xdp_prog && (features & NETIF_F_LRO)) { 10230 e_dev_err("LRO is not supported with XDP\n"); 10231 features &= ~NETIF_F_LRO; 10232 } 10233 10234 return features; 10235 } 10236 10237 static void ixgbe_reset_l2fw_offload(struct ixgbe_adapter *adapter) 10238 { 10239 int rss = min_t(int, ixgbe_max_rss_indices(adapter), 10240 num_online_cpus()); 10241 10242 /* go back to full RSS if we're not running SR-IOV */ 10243 if (!adapter->ring_feature[RING_F_VMDQ].offset) 10244 adapter->flags &= ~(IXGBE_FLAG_VMDQ_ENABLED | 10245 IXGBE_FLAG_SRIOV_ENABLED); 10246 10247 adapter->ring_feature[RING_F_RSS].limit = rss; 10248 adapter->ring_feature[RING_F_VMDQ].limit = 1; 10249 10250 ixgbe_setup_tc(adapter->netdev, adapter->hw_tcs); 10251 } 10252 10253 static int ixgbe_set_features(struct net_device *netdev, 10254 netdev_features_t features) 10255 { 10256 struct ixgbe_adapter *adapter = netdev_priv(netdev); 10257 netdev_features_t changed = netdev->features ^ features; 10258 bool need_reset = false; 10259 10260 /* Make sure RSC matches LRO, reset if change */ 10261 if (!(features & NETIF_F_LRO)) { 10262 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 10263 need_reset = true; 10264 adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED; 10265 } else if ((adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) && 10266 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) { 10267 if (adapter->rx_itr_setting == 1 || 10268 adapter->rx_itr_setting > IXGBE_MIN_RSC_ITR) { 10269 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED; 10270 need_reset = true; 10271 } else if ((changed ^ features) & NETIF_F_LRO) { 10272 e_info(probe, "rx-usecs set too low, " 10273 "disabling RSC\n"); 10274 } 10275 } 10276 10277 /* 10278 * Check if Flow Director n-tuple support or hw_tc support was 10279 * enabled or disabled. If the state changed, we need to reset. 10280 */ 10281 if ((features & NETIF_F_NTUPLE) || (features & NETIF_F_HW_TC)) { 10282 /* turn off ATR, enable perfect filters and reset */ 10283 if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) 10284 need_reset = true; 10285 10286 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; 10287 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE; 10288 } else { 10289 /* turn off perfect filters, enable ATR and reset */ 10290 if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) 10291 need_reset = true; 10292 10293 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE; 10294 10295 /* We cannot enable ATR if SR-IOV is enabled */ 10296 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED || 10297 /* We cannot enable ATR if we have 2 or more tcs */ 10298 (adapter->hw_tcs > 1) || 10299 /* We cannot enable ATR if RSS is disabled */ 10300 (adapter->ring_feature[RING_F_RSS].limit <= 1) || 10301 /* A sample rate of 0 indicates ATR disabled */ 10302 (!adapter->atr_sample_rate)) 10303 ; /* do nothing not supported */ 10304 else /* otherwise supported and set the flag */ 10305 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE; 10306 } 10307 10308 if (changed & NETIF_F_RXALL) 10309 need_reset = true; 10310 10311 netdev->features = features; 10312 10313 if ((changed & NETIF_F_HW_L2FW_DOFFLOAD) && adapter->num_rx_pools > 1) 10314 ixgbe_reset_l2fw_offload(adapter); 10315 else if (need_reset) 10316 ixgbe_do_reset(netdev); 10317 else if (changed & (NETIF_F_HW_VLAN_CTAG_RX | 10318 NETIF_F_HW_VLAN_CTAG_FILTER)) 10319 ixgbe_set_rx_mode(netdev); 10320 10321 return 1; 10322 } 10323 10324 static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 10325 struct net_device *dev, 10326 const unsigned char *addr, u16 vid, 10327 u16 flags, bool *notified, 10328 struct netlink_ext_ack *extack) 10329 { 10330 /* guarantee we can provide a unique filter for the unicast address */ 10331 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) { 10332 struct ixgbe_adapter *adapter = netdev_priv(dev); 10333 u16 pool = VMDQ_P(0); 10334 10335 if (netdev_uc_count(dev) >= ixgbe_available_rars(adapter, pool)) 10336 return -ENOMEM; 10337 } 10338 10339 return ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, flags); 10340 } 10341 10342 /** 10343 * ixgbe_configure_bridge_mode - set various bridge modes 10344 * @adapter: the private structure 10345 * @mode: requested bridge mode 10346 * 10347 * Configure some settings require for various bridge modes. 10348 **/ 10349 static int ixgbe_configure_bridge_mode(struct ixgbe_adapter *adapter, 10350 __u16 mode) 10351 { 10352 struct ixgbe_hw *hw = &adapter->hw; 10353 unsigned int p, num_pools; 10354 u32 vmdctl; 10355 10356 switch (mode) { 10357 case BRIDGE_MODE_VEPA: 10358 /* disable Tx loopback, rely on switch hairpin mode */ 10359 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 0); 10360 10361 /* must enable Rx switching replication to allow multicast 10362 * packet reception on all VFs, and to enable source address 10363 * pruning. 10364 */ 10365 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); 10366 vmdctl |= IXGBE_VT_CTL_REPLEN; 10367 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); 10368 10369 /* enable Rx source address pruning. Note, this requires 10370 * replication to be enabled or else it does nothing. 10371 */ 10372 num_pools = adapter->num_vfs + adapter->num_rx_pools; 10373 for (p = 0; p < num_pools; p++) { 10374 if (hw->mac.ops.set_source_address_pruning) 10375 hw->mac.ops.set_source_address_pruning(hw, 10376 true, 10377 p); 10378 } 10379 break; 10380 case BRIDGE_MODE_VEB: 10381 /* enable Tx loopback for internal VF/PF communication */ 10382 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 10383 IXGBE_PFDTXGSWC_VT_LBEN); 10384 10385 /* disable Rx switching replication unless we have SR-IOV 10386 * virtual functions 10387 */ 10388 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); 10389 if (!adapter->num_vfs) 10390 vmdctl &= ~IXGBE_VT_CTL_REPLEN; 10391 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); 10392 10393 /* disable Rx source address pruning, since we don't expect to 10394 * be receiving external loopback of our transmitted frames. 10395 */ 10396 num_pools = adapter->num_vfs + adapter->num_rx_pools; 10397 for (p = 0; p < num_pools; p++) { 10398 if (hw->mac.ops.set_source_address_pruning) 10399 hw->mac.ops.set_source_address_pruning(hw, 10400 false, 10401 p); 10402 } 10403 break; 10404 default: 10405 return -EINVAL; 10406 } 10407 10408 adapter->bridge_mode = mode; 10409 10410 e_info(drv, "enabling bridge mode: %s\n", 10411 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB"); 10412 10413 return 0; 10414 } 10415 10416 static int ixgbe_ndo_bridge_setlink(struct net_device *dev, 10417 struct nlmsghdr *nlh, u16 flags, 10418 struct netlink_ext_ack *extack) 10419 { 10420 struct ixgbe_adapter *adapter = netdev_priv(dev); 10421 struct nlattr *attr, *br_spec; 10422 int rem; 10423 10424 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 10425 return -EOPNOTSUPP; 10426 10427 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 10428 if (!br_spec) 10429 return -EINVAL; 10430 10431 nla_for_each_nested_type(attr, IFLA_BRIDGE_MODE, br_spec, rem) { 10432 __u16 mode = nla_get_u16(attr); 10433 int status = ixgbe_configure_bridge_mode(adapter, mode); 10434 10435 if (status) 10436 return status; 10437 10438 break; 10439 } 10440 10441 return 0; 10442 } 10443 10444 static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, 10445 struct net_device *dev, 10446 u32 filter_mask, int nlflags) 10447 { 10448 struct ixgbe_adapter *adapter = netdev_priv(dev); 10449 10450 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 10451 return 0; 10452 10453 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, 10454 adapter->bridge_mode, 0, 0, nlflags, 10455 filter_mask, NULL); 10456 } 10457 10458 static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev) 10459 { 10460 struct ixgbe_adapter *adapter = netdev_priv(pdev); 10461 struct ixgbe_fwd_adapter *accel; 10462 int tcs = adapter->hw_tcs ? : 1; 10463 int pool, err; 10464 10465 if (adapter->xdp_prog) { 10466 e_warn(probe, "L2FW offload is not supported with XDP\n"); 10467 return ERR_PTR(-EINVAL); 10468 } 10469 10470 /* The hardware supported by ixgbe only filters on the destination MAC 10471 * address. In order to avoid issues we only support offloading modes 10472 * where the hardware can actually provide the functionality. 10473 */ 10474 if (!macvlan_supports_dest_filter(vdev)) 10475 return ERR_PTR(-EMEDIUMTYPE); 10476 10477 /* We need to lock down the macvlan to be a single queue device so that 10478 * we can reuse the tc_to_txq field in the macvlan netdev to represent 10479 * the queue mapping to our netdev. 10480 */ 10481 if (netif_is_multiqueue(vdev)) 10482 return ERR_PTR(-ERANGE); 10483 10484 pool = find_first_zero_bit(adapter->fwd_bitmask, adapter->num_rx_pools); 10485 if (pool == adapter->num_rx_pools) { 10486 u16 used_pools = adapter->num_vfs + adapter->num_rx_pools; 10487 u16 reserved_pools; 10488 10489 if (((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && 10490 adapter->num_rx_pools >= (MAX_TX_QUEUES / tcs)) || 10491 adapter->num_rx_pools > IXGBE_MAX_MACVLANS) 10492 return ERR_PTR(-EBUSY); 10493 10494 /* Hardware has a limited number of available pools. Each VF, 10495 * and the PF require a pool. Check to ensure we don't 10496 * attempt to use more then the available number of pools. 10497 */ 10498 if (used_pools >= IXGBE_MAX_VF_FUNCTIONS) 10499 return ERR_PTR(-EBUSY); 10500 10501 /* Enable VMDq flag so device will be set in VM mode */ 10502 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED | 10503 IXGBE_FLAG_SRIOV_ENABLED; 10504 10505 /* Try to reserve as many queues per pool as possible, 10506 * we start with the configurations that support 4 queues 10507 * per pools, followed by 2, and then by just 1 per pool. 10508 */ 10509 if (used_pools < 32 && adapter->num_rx_pools < 16) 10510 reserved_pools = min_t(u16, 10511 32 - used_pools, 10512 16 - adapter->num_rx_pools); 10513 else if (adapter->num_rx_pools < 32) 10514 reserved_pools = min_t(u16, 10515 64 - used_pools, 10516 32 - adapter->num_rx_pools); 10517 else 10518 reserved_pools = 64 - used_pools; 10519 10520 10521 if (!reserved_pools) 10522 return ERR_PTR(-EBUSY); 10523 10524 adapter->ring_feature[RING_F_VMDQ].limit += reserved_pools; 10525 10526 /* Force reinit of ring allocation with VMDQ enabled */ 10527 err = ixgbe_setup_tc(pdev, adapter->hw_tcs); 10528 if (err) 10529 return ERR_PTR(err); 10530 10531 if (pool >= adapter->num_rx_pools) 10532 return ERR_PTR(-ENOMEM); 10533 } 10534 10535 accel = kzalloc(sizeof(*accel), GFP_KERNEL); 10536 if (!accel) 10537 return ERR_PTR(-ENOMEM); 10538 10539 set_bit(pool, adapter->fwd_bitmask); 10540 netdev_set_sb_channel(vdev, pool); 10541 accel->pool = pool; 10542 accel->netdev = vdev; 10543 10544 if (!netif_running(pdev)) 10545 return accel; 10546 10547 err = ixgbe_fwd_ring_up(adapter, accel); 10548 if (err) 10549 return ERR_PTR(err); 10550 10551 return accel; 10552 } 10553 10554 static void ixgbe_fwd_del(struct net_device *pdev, void *priv) 10555 { 10556 struct ixgbe_fwd_adapter *accel = priv; 10557 struct ixgbe_adapter *adapter = netdev_priv(pdev); 10558 unsigned int rxbase = accel->rx_base_queue; 10559 unsigned int i; 10560 10561 /* delete unicast filter associated with offloaded interface */ 10562 ixgbe_del_mac_filter(adapter, accel->netdev->dev_addr, 10563 VMDQ_P(accel->pool)); 10564 10565 /* Allow remaining Rx packets to get flushed out of the 10566 * Rx FIFO before we drop the netdev for the ring. 10567 */ 10568 usleep_range(10000, 20000); 10569 10570 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) { 10571 struct ixgbe_ring *ring = adapter->rx_ring[rxbase + i]; 10572 struct ixgbe_q_vector *qv = ring->q_vector; 10573 10574 /* Make sure we aren't processing any packets and clear 10575 * netdev to shut down the ring. 10576 */ 10577 if (netif_running(adapter->netdev)) 10578 napi_synchronize(&qv->napi); 10579 ring->netdev = NULL; 10580 } 10581 10582 /* unbind the queues and drop the subordinate channel config */ 10583 netdev_unbind_sb_channel(pdev, accel->netdev); 10584 netdev_set_sb_channel(accel->netdev, 0); 10585 10586 clear_bit(accel->pool, adapter->fwd_bitmask); 10587 kfree(accel); 10588 } 10589 10590 #define IXGBE_MAX_MAC_HDR_LEN 127 10591 #define IXGBE_MAX_NETWORK_HDR_LEN 511 10592 10593 static netdev_features_t 10594 ixgbe_features_check(struct sk_buff *skb, struct net_device *dev, 10595 netdev_features_t features) 10596 { 10597 unsigned int network_hdr_len, mac_hdr_len; 10598 10599 /* Make certain the headers can be described by a context descriptor */ 10600 mac_hdr_len = skb_network_offset(skb); 10601 if (unlikely(mac_hdr_len > IXGBE_MAX_MAC_HDR_LEN)) 10602 return features & ~(NETIF_F_HW_CSUM | 10603 NETIF_F_SCTP_CRC | 10604 NETIF_F_GSO_UDP_L4 | 10605 NETIF_F_HW_VLAN_CTAG_TX | 10606 NETIF_F_TSO | 10607 NETIF_F_TSO6); 10608 10609 network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb); 10610 if (unlikely(network_hdr_len > IXGBE_MAX_NETWORK_HDR_LEN)) 10611 return features & ~(NETIF_F_HW_CSUM | 10612 NETIF_F_SCTP_CRC | 10613 NETIF_F_GSO_UDP_L4 | 10614 NETIF_F_TSO | 10615 NETIF_F_TSO6); 10616 10617 /* We can only support IPV4 TSO in tunnels if we can mangle the 10618 * inner IP ID field, so strip TSO if MANGLEID is not supported. 10619 * IPsec offoad sets skb->encapsulation but still can handle 10620 * the TSO, so it's the exception. 10621 */ 10622 if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) { 10623 #ifdef CONFIG_IXGBE_IPSEC 10624 if (!secpath_exists(skb)) 10625 #endif 10626 features &= ~NETIF_F_TSO; 10627 } 10628 10629 return features; 10630 } 10631 10632 static int ixgbe_xdp_setup(struct net_device *dev, struct bpf_prog *prog) 10633 { 10634 int i, frame_size = dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; 10635 struct ixgbe_adapter *adapter = netdev_priv(dev); 10636 struct bpf_prog *old_prog; 10637 bool need_reset; 10638 int num_queues; 10639 10640 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 10641 return -EINVAL; 10642 10643 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) 10644 return -EINVAL; 10645 10646 /* verify ixgbe ring attributes are sufficient for XDP */ 10647 for (i = 0; i < adapter->num_rx_queues; i++) { 10648 struct ixgbe_ring *ring = adapter->rx_ring[i]; 10649 10650 if (ring_is_rsc_enabled(ring)) 10651 return -EINVAL; 10652 10653 if (frame_size > ixgbe_rx_bufsz(ring)) 10654 return -EINVAL; 10655 } 10656 10657 /* if the number of cpus is much larger than the maximum of queues, 10658 * we should stop it and then return with ENOMEM like before. 10659 */ 10660 if (nr_cpu_ids > IXGBE_MAX_XDP_QS * 2) 10661 return -ENOMEM; 10662 10663 old_prog = xchg(&adapter->xdp_prog, prog); 10664 need_reset = (!!prog != !!old_prog); 10665 10666 /* If transitioning XDP modes reconfigure rings */ 10667 if (need_reset) { 10668 int err; 10669 10670 if (!prog) 10671 /* Wait until ndo_xsk_wakeup completes. */ 10672 synchronize_rcu(); 10673 err = ixgbe_setup_tc(dev, adapter->hw_tcs); 10674 10675 if (err) 10676 return -EINVAL; 10677 if (!prog) 10678 xdp_features_clear_redirect_target(dev); 10679 } else { 10680 for (i = 0; i < adapter->num_rx_queues; i++) { 10681 WRITE_ONCE(adapter->rx_ring[i]->xdp_prog, 10682 adapter->xdp_prog); 10683 } 10684 } 10685 10686 if (old_prog) 10687 bpf_prog_put(old_prog); 10688 10689 /* Kick start the NAPI context if there is an AF_XDP socket open 10690 * on that queue id. This so that receiving will start. 10691 */ 10692 if (need_reset && prog) { 10693 num_queues = min_t(int, adapter->num_rx_queues, 10694 adapter->num_xdp_queues); 10695 for (i = 0; i < num_queues; i++) 10696 if (adapter->xdp_ring[i]->xsk_pool) 10697 (void)ixgbe_xsk_wakeup(adapter->netdev, i, 10698 XDP_WAKEUP_RX); 10699 xdp_features_set_redirect_target(dev, true); 10700 } 10701 10702 return 0; 10703 } 10704 10705 static int ixgbe_xdp(struct net_device *dev, struct netdev_bpf *xdp) 10706 { 10707 struct ixgbe_adapter *adapter = netdev_priv(dev); 10708 10709 switch (xdp->command) { 10710 case XDP_SETUP_PROG: 10711 return ixgbe_xdp_setup(dev, xdp->prog); 10712 case XDP_SETUP_XSK_POOL: 10713 return ixgbe_xsk_pool_setup(adapter, xdp->xsk.pool, 10714 xdp->xsk.queue_id); 10715 10716 default: 10717 return -EINVAL; 10718 } 10719 } 10720 10721 void ixgbe_xdp_ring_update_tail(struct ixgbe_ring *ring) 10722 { 10723 /* Force memory writes to complete before letting h/w know there 10724 * are new descriptors to fetch. 10725 */ 10726 wmb(); 10727 writel(ring->next_to_use, ring->tail); 10728 } 10729 10730 void ixgbe_xdp_ring_update_tail_locked(struct ixgbe_ring *ring) 10731 { 10732 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10733 spin_lock(&ring->tx_lock); 10734 ixgbe_xdp_ring_update_tail(ring); 10735 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10736 spin_unlock(&ring->tx_lock); 10737 } 10738 10739 static int ixgbe_xdp_xmit(struct net_device *dev, int n, 10740 struct xdp_frame **frames, u32 flags) 10741 { 10742 struct ixgbe_adapter *adapter = netdev_priv(dev); 10743 struct ixgbe_ring *ring; 10744 int nxmit = 0; 10745 int i; 10746 10747 if (unlikely(test_bit(__IXGBE_DOWN, &adapter->state))) 10748 return -ENETDOWN; 10749 10750 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) 10751 return -EINVAL; 10752 10753 /* During program transitions its possible adapter->xdp_prog is assigned 10754 * but ring has not been configured yet. In this case simply abort xmit. 10755 */ 10756 ring = adapter->xdp_prog ? ixgbe_determine_xdp_ring(adapter) : NULL; 10757 if (unlikely(!ring)) 10758 return -ENXIO; 10759 10760 if (unlikely(test_bit(__IXGBE_TX_DISABLED, &ring->state))) 10761 return -ENXIO; 10762 10763 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10764 spin_lock(&ring->tx_lock); 10765 10766 for (i = 0; i < n; i++) { 10767 struct xdp_frame *xdpf = frames[i]; 10768 int err; 10769 10770 err = ixgbe_xmit_xdp_ring(ring, xdpf); 10771 if (err != IXGBE_XDP_TX) 10772 break; 10773 nxmit++; 10774 } 10775 10776 if (unlikely(flags & XDP_XMIT_FLUSH)) 10777 ixgbe_xdp_ring_update_tail(ring); 10778 10779 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10780 spin_unlock(&ring->tx_lock); 10781 10782 return nxmit; 10783 } 10784 10785 static const struct net_device_ops ixgbe_netdev_ops = { 10786 .ndo_open = ixgbe_open, 10787 .ndo_stop = ixgbe_close, 10788 .ndo_start_xmit = ixgbe_xmit_frame, 10789 .ndo_set_rx_mode = ixgbe_set_rx_mode, 10790 .ndo_validate_addr = eth_validate_addr, 10791 .ndo_set_mac_address = ixgbe_set_mac, 10792 .ndo_change_mtu = ixgbe_change_mtu, 10793 .ndo_tx_timeout = ixgbe_tx_timeout, 10794 .ndo_set_tx_maxrate = ixgbe_tx_maxrate, 10795 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid, 10796 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid, 10797 .ndo_eth_ioctl = ixgbe_ioctl, 10798 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac, 10799 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan, 10800 .ndo_set_vf_rate = ixgbe_ndo_set_vf_bw, 10801 .ndo_set_vf_spoofchk = ixgbe_ndo_set_vf_spoofchk, 10802 .ndo_set_vf_link_state = ixgbe_ndo_set_vf_link_state, 10803 .ndo_set_vf_rss_query_en = ixgbe_ndo_set_vf_rss_query_en, 10804 .ndo_set_vf_trust = ixgbe_ndo_set_vf_trust, 10805 .ndo_get_vf_config = ixgbe_ndo_get_vf_config, 10806 .ndo_get_vf_stats = ixgbe_ndo_get_vf_stats, 10807 .ndo_get_stats64 = ixgbe_get_stats64, 10808 .ndo_setup_tc = __ixgbe_setup_tc, 10809 #ifdef IXGBE_FCOE 10810 .ndo_select_queue = ixgbe_select_queue, 10811 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get, 10812 .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target, 10813 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put, 10814 .ndo_fcoe_enable = ixgbe_fcoe_enable, 10815 .ndo_fcoe_disable = ixgbe_fcoe_disable, 10816 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn, 10817 .ndo_fcoe_get_hbainfo = ixgbe_fcoe_get_hbainfo, 10818 #endif /* IXGBE_FCOE */ 10819 .ndo_set_features = ixgbe_set_features, 10820 .ndo_fix_features = ixgbe_fix_features, 10821 .ndo_fdb_add = ixgbe_ndo_fdb_add, 10822 .ndo_bridge_setlink = ixgbe_ndo_bridge_setlink, 10823 .ndo_bridge_getlink = ixgbe_ndo_bridge_getlink, 10824 .ndo_dfwd_add_station = ixgbe_fwd_add, 10825 .ndo_dfwd_del_station = ixgbe_fwd_del, 10826 .ndo_features_check = ixgbe_features_check, 10827 .ndo_bpf = ixgbe_xdp, 10828 .ndo_xdp_xmit = ixgbe_xdp_xmit, 10829 .ndo_xsk_wakeup = ixgbe_xsk_wakeup, 10830 }; 10831 10832 static void ixgbe_disable_txr_hw(struct ixgbe_adapter *adapter, 10833 struct ixgbe_ring *tx_ring) 10834 { 10835 unsigned long wait_delay, delay_interval; 10836 struct ixgbe_hw *hw = &adapter->hw; 10837 u8 reg_idx = tx_ring->reg_idx; 10838 int wait_loop; 10839 u32 txdctl; 10840 10841 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 10842 10843 /* delay mechanism from ixgbe_disable_tx */ 10844 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 10845 10846 wait_loop = IXGBE_MAX_RX_DESC_POLL; 10847 wait_delay = delay_interval; 10848 10849 while (wait_loop--) { 10850 usleep_range(wait_delay, wait_delay + 10); 10851 wait_delay += delay_interval * 2; 10852 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 10853 10854 if (!(txdctl & IXGBE_TXDCTL_ENABLE)) 10855 return; 10856 } 10857 10858 e_err(drv, "TXDCTL.ENABLE not cleared within the polling period\n"); 10859 } 10860 10861 static void ixgbe_disable_txr(struct ixgbe_adapter *adapter, 10862 struct ixgbe_ring *tx_ring) 10863 { 10864 set_bit(__IXGBE_TX_DISABLED, &tx_ring->state); 10865 ixgbe_disable_txr_hw(adapter, tx_ring); 10866 } 10867 10868 static void ixgbe_disable_rxr_hw(struct ixgbe_adapter *adapter, 10869 struct ixgbe_ring *rx_ring) 10870 { 10871 unsigned long wait_delay, delay_interval; 10872 struct ixgbe_hw *hw = &adapter->hw; 10873 u8 reg_idx = rx_ring->reg_idx; 10874 int wait_loop; 10875 u32 rxdctl; 10876 10877 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 10878 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 10879 rxdctl |= IXGBE_RXDCTL_SWFLSH; 10880 10881 /* write value back with RXDCTL.ENABLE bit cleared */ 10882 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 10883 10884 /* RXDCTL.EN may not change on 82598 if link is down, so skip it */ 10885 if (hw->mac.type == ixgbe_mac_82598EB && 10886 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 10887 return; 10888 10889 /* delay mechanism from ixgbe_disable_rx */ 10890 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 10891 10892 wait_loop = IXGBE_MAX_RX_DESC_POLL; 10893 wait_delay = delay_interval; 10894 10895 while (wait_loop--) { 10896 usleep_range(wait_delay, wait_delay + 10); 10897 wait_delay += delay_interval * 2; 10898 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 10899 10900 if (!(rxdctl & IXGBE_RXDCTL_ENABLE)) 10901 return; 10902 } 10903 10904 e_err(drv, "RXDCTL.ENABLE not cleared within the polling period\n"); 10905 } 10906 10907 static void ixgbe_reset_txr_stats(struct ixgbe_ring *tx_ring) 10908 { 10909 memset(&tx_ring->stats, 0, sizeof(tx_ring->stats)); 10910 memset(&tx_ring->tx_stats, 0, sizeof(tx_ring->tx_stats)); 10911 } 10912 10913 static void ixgbe_reset_rxr_stats(struct ixgbe_ring *rx_ring) 10914 { 10915 memset(&rx_ring->stats, 0, sizeof(rx_ring->stats)); 10916 memset(&rx_ring->rx_stats, 0, sizeof(rx_ring->rx_stats)); 10917 } 10918 10919 /** 10920 * ixgbe_irq_disable_single - Disable single IRQ vector 10921 * @adapter: adapter structure 10922 * @ring: ring index 10923 **/ 10924 static void ixgbe_irq_disable_single(struct ixgbe_adapter *adapter, u32 ring) 10925 { 10926 struct ixgbe_hw *hw = &adapter->hw; 10927 u64 qmask = BIT_ULL(ring); 10928 u32 mask; 10929 10930 switch (adapter->hw.mac.type) { 10931 case ixgbe_mac_82598EB: 10932 mask = qmask & IXGBE_EIMC_RTX_QUEUE; 10933 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, mask); 10934 break; 10935 case ixgbe_mac_82599EB: 10936 case ixgbe_mac_X540: 10937 case ixgbe_mac_X550: 10938 case ixgbe_mac_X550EM_x: 10939 case ixgbe_mac_x550em_a: 10940 mask = (qmask & 0xFFFFFFFF); 10941 if (mask) 10942 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask); 10943 mask = (qmask >> 32); 10944 if (mask) 10945 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask); 10946 break; 10947 default: 10948 break; 10949 } 10950 IXGBE_WRITE_FLUSH(&adapter->hw); 10951 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) 10952 synchronize_irq(adapter->msix_entries[ring].vector); 10953 else 10954 synchronize_irq(adapter->pdev->irq); 10955 } 10956 10957 /** 10958 * ixgbe_txrx_ring_disable - Disable Rx/Tx/XDP Tx rings 10959 * @adapter: adapter structure 10960 * @ring: ring index 10961 * 10962 * This function disables a certain Rx/Tx/XDP Tx ring. The function 10963 * assumes that the netdev is running. 10964 **/ 10965 void ixgbe_txrx_ring_disable(struct ixgbe_adapter *adapter, int ring) 10966 { 10967 struct ixgbe_ring *rx_ring, *tx_ring, *xdp_ring; 10968 10969 rx_ring = adapter->rx_ring[ring]; 10970 tx_ring = adapter->tx_ring[ring]; 10971 xdp_ring = adapter->xdp_ring[ring]; 10972 10973 ixgbe_irq_disable_single(adapter, ring); 10974 10975 /* Rx/Tx/XDP Tx share the same napi context. */ 10976 napi_disable(&rx_ring->q_vector->napi); 10977 10978 ixgbe_disable_txr(adapter, tx_ring); 10979 if (xdp_ring) 10980 ixgbe_disable_txr(adapter, xdp_ring); 10981 ixgbe_disable_rxr_hw(adapter, rx_ring); 10982 10983 if (xdp_ring) 10984 synchronize_rcu(); 10985 10986 ixgbe_clean_tx_ring(tx_ring); 10987 if (xdp_ring) 10988 ixgbe_clean_tx_ring(xdp_ring); 10989 ixgbe_clean_rx_ring(rx_ring); 10990 10991 ixgbe_reset_txr_stats(tx_ring); 10992 if (xdp_ring) 10993 ixgbe_reset_txr_stats(xdp_ring); 10994 ixgbe_reset_rxr_stats(rx_ring); 10995 } 10996 10997 /** 10998 * ixgbe_txrx_ring_enable - Enable Rx/Tx/XDP Tx rings 10999 * @adapter: adapter structure 11000 * @ring: ring index 11001 * 11002 * This function enables a certain Rx/Tx/XDP Tx ring. The function 11003 * assumes that the netdev is running. 11004 **/ 11005 void ixgbe_txrx_ring_enable(struct ixgbe_adapter *adapter, int ring) 11006 { 11007 struct ixgbe_ring *rx_ring, *tx_ring, *xdp_ring; 11008 11009 rx_ring = adapter->rx_ring[ring]; 11010 tx_ring = adapter->tx_ring[ring]; 11011 xdp_ring = adapter->xdp_ring[ring]; 11012 11013 ixgbe_configure_tx_ring(adapter, tx_ring); 11014 if (xdp_ring) 11015 ixgbe_configure_tx_ring(adapter, xdp_ring); 11016 ixgbe_configure_rx_ring(adapter, rx_ring); 11017 11018 clear_bit(__IXGBE_TX_DISABLED, &tx_ring->state); 11019 if (xdp_ring) 11020 clear_bit(__IXGBE_TX_DISABLED, &xdp_ring->state); 11021 11022 /* Rx/Tx/XDP Tx share the same napi context. */ 11023 napi_enable(&rx_ring->q_vector->napi); 11024 ixgbe_irq_enable_queues(adapter, BIT_ULL(ring)); 11025 IXGBE_WRITE_FLUSH(&adapter->hw); 11026 } 11027 11028 /** 11029 * ixgbe_enumerate_functions - Get the number of ports this device has 11030 * @adapter: adapter structure 11031 * 11032 * This function enumerates the phsyical functions co-located on a single slot, 11033 * in order to determine how many ports a device has. This is most useful in 11034 * determining the required GT/s of PCIe bandwidth necessary for optimal 11035 * performance. 11036 **/ 11037 static inline int ixgbe_enumerate_functions(struct ixgbe_adapter *adapter) 11038 { 11039 struct pci_dev *entry, *pdev = adapter->pdev; 11040 int physfns = 0; 11041 11042 /* Some cards can not use the generic count PCIe functions method, 11043 * because they are behind a parent switch, so we hardcode these with 11044 * the correct number of functions. 11045 */ 11046 if (ixgbe_pcie_from_parent(&adapter->hw)) 11047 physfns = 4; 11048 11049 list_for_each_entry(entry, &adapter->pdev->bus->devices, bus_list) { 11050 /* don't count virtual functions */ 11051 if (entry->is_virtfn) 11052 continue; 11053 11054 /* When the devices on the bus don't all match our device ID, 11055 * we can't reliably determine the correct number of 11056 * functions. This can occur if a function has been direct 11057 * attached to a virtual machine using VT-d, for example. In 11058 * this case, simply return -1 to indicate this. 11059 */ 11060 if ((entry->vendor != pdev->vendor) || 11061 (entry->device != pdev->device)) 11062 return -1; 11063 11064 physfns++; 11065 } 11066 11067 return physfns; 11068 } 11069 11070 /** 11071 * ixgbe_wol_supported - Check whether device supports WoL 11072 * @adapter: the adapter private structure 11073 * @device_id: the device ID 11074 * @subdevice_id: the subsystem device ID 11075 * 11076 * This function is used by probe and ethtool to determine 11077 * which devices have WoL support 11078 * 11079 **/ 11080 bool ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id, 11081 u16 subdevice_id) 11082 { 11083 struct ixgbe_hw *hw = &adapter->hw; 11084 u16 wol_cap = adapter->eeprom_cap & IXGBE_DEVICE_CAPS_WOL_MASK; 11085 11086 /* WOL not supported on 82598 */ 11087 if (hw->mac.type == ixgbe_mac_82598EB) 11088 return false; 11089 11090 /* check eeprom to see if WOL is enabled for X540 and newer */ 11091 if (hw->mac.type >= ixgbe_mac_X540) { 11092 if ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0_1) || 11093 ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0) && 11094 (hw->bus.func == 0))) 11095 return true; 11096 } 11097 11098 /* WOL is determined based on device IDs for 82599 MACs */ 11099 switch (device_id) { 11100 case IXGBE_DEV_ID_82599_SFP: 11101 /* Only these subdevices could supports WOL */ 11102 switch (subdevice_id) { 11103 case IXGBE_SUBDEV_ID_82599_560FLR: 11104 case IXGBE_SUBDEV_ID_82599_LOM_SNAP6: 11105 case IXGBE_SUBDEV_ID_82599_SFP_WOL0: 11106 case IXGBE_SUBDEV_ID_82599_SFP_2OCP: 11107 /* only support first port */ 11108 if (hw->bus.func != 0) 11109 break; 11110 fallthrough; 11111 case IXGBE_SUBDEV_ID_82599_SP_560FLR: 11112 case IXGBE_SUBDEV_ID_82599_SFP: 11113 case IXGBE_SUBDEV_ID_82599_RNDC: 11114 case IXGBE_SUBDEV_ID_82599_ECNA_DP: 11115 case IXGBE_SUBDEV_ID_82599_SFP_1OCP: 11116 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM1: 11117 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM2: 11118 return true; 11119 } 11120 break; 11121 case IXGBE_DEV_ID_82599EN_SFP: 11122 /* Only these subdevices support WOL */ 11123 switch (subdevice_id) { 11124 case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1: 11125 return true; 11126 } 11127 break; 11128 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE: 11129 /* All except this subdevice support WOL */ 11130 if (subdevice_id != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ) 11131 return true; 11132 break; 11133 case IXGBE_DEV_ID_82599_KX4: 11134 return true; 11135 default: 11136 break; 11137 } 11138 11139 return false; 11140 } 11141 11142 /** 11143 * ixgbe_set_fw_version_e610 - Set FW version specifically on E610 adapters 11144 * @adapter: the adapter private structure 11145 * 11146 * This function is used by probe and ethtool to determine the FW version to 11147 * format to display. The FW version is taken from the EEPROM/NVM. 11148 * 11149 */ 11150 static void ixgbe_set_fw_version_e610(struct ixgbe_adapter *adapter) 11151 { 11152 struct ixgbe_orom_info *orom = &adapter->hw.flash.orom; 11153 struct ixgbe_nvm_info *nvm = &adapter->hw.flash.nvm; 11154 11155 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11156 "%x.%02x 0x%x %d.%d.%d", nvm->major, nvm->minor, 11157 nvm->eetrack, orom->major, orom->build, orom->patch); 11158 } 11159 11160 /** 11161 * ixgbe_set_fw_version - Set FW version 11162 * @adapter: the adapter private structure 11163 * 11164 * This function is used by probe and ethtool to determine the FW version to 11165 * format to display. The FW version is taken from the EEPROM/NVM. 11166 */ 11167 static void ixgbe_set_fw_version(struct ixgbe_adapter *adapter) 11168 { 11169 struct ixgbe_hw *hw = &adapter->hw; 11170 struct ixgbe_nvm_version nvm_ver; 11171 11172 if (adapter->hw.mac.type == ixgbe_mac_e610) { 11173 ixgbe_set_fw_version_e610(adapter); 11174 return; 11175 } 11176 11177 ixgbe_get_oem_prod_version(hw, &nvm_ver); 11178 if (nvm_ver.oem_valid) { 11179 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11180 "%x.%x.%x", nvm_ver.oem_major, nvm_ver.oem_minor, 11181 nvm_ver.oem_release); 11182 return; 11183 } 11184 11185 ixgbe_get_etk_id(hw, &nvm_ver); 11186 ixgbe_get_orom_version(hw, &nvm_ver); 11187 11188 if (nvm_ver.or_valid) { 11189 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11190 "0x%08x, %d.%d.%d", nvm_ver.etk_id, nvm_ver.or_major, 11191 nvm_ver.or_build, nvm_ver.or_patch); 11192 return; 11193 } 11194 11195 /* Set ETrack ID format */ 11196 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11197 "0x%08x", nvm_ver.etk_id); 11198 } 11199 11200 /** 11201 * ixgbe_probe - Device Initialization Routine 11202 * @pdev: PCI device information struct 11203 * @ent: entry in ixgbe_pci_tbl 11204 * 11205 * Returns 0 on success, negative on failure 11206 * 11207 * ixgbe_probe initializes an adapter identified by a pci_dev structure. 11208 * The OS initialization, configuring of the adapter private structure, 11209 * and a hardware reset occur. 11210 **/ 11211 static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 11212 { 11213 struct net_device *netdev; 11214 struct ixgbe_adapter *adapter = NULL; 11215 struct ixgbe_hw *hw; 11216 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; 11217 unsigned int indices = MAX_TX_QUEUES; 11218 u8 part_str[IXGBE_PBANUM_LENGTH]; 11219 int i, err, expected_gts; 11220 bool disable_dev = false; 11221 #ifdef IXGBE_FCOE 11222 u16 device_caps; 11223 #endif 11224 u32 eec; 11225 11226 /* Catch broken hardware that put the wrong VF device ID in 11227 * the PCIe SR-IOV capability. 11228 */ 11229 if (pdev->is_virtfn) { 11230 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", 11231 pci_name(pdev), pdev->vendor, pdev->device); 11232 return -EINVAL; 11233 } 11234 11235 err = pci_enable_device_mem(pdev); 11236 if (err) 11237 return err; 11238 11239 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 11240 if (err) { 11241 dev_err(&pdev->dev, 11242 "No usable DMA configuration, aborting\n"); 11243 goto err_dma; 11244 } 11245 11246 err = pci_request_mem_regions(pdev, ixgbe_driver_name); 11247 if (err) { 11248 dev_err(&pdev->dev, 11249 "pci_request_selected_regions failed 0x%x\n", err); 11250 goto err_pci_reg; 11251 } 11252 11253 pci_set_master(pdev); 11254 pci_save_state(pdev); 11255 11256 if (ii->mac == ixgbe_mac_82598EB) { 11257 #ifdef CONFIG_IXGBE_DCB 11258 /* 8 TC w/ 4 queues per TC */ 11259 indices = 4 * MAX_TRAFFIC_CLASS; 11260 #else 11261 indices = IXGBE_MAX_RSS_INDICES; 11262 #endif 11263 } else if (ii->mac == ixgbe_mac_e610) { 11264 indices = IXGBE_MAX_RSS_INDICES_X550; 11265 } 11266 11267 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices); 11268 if (!netdev) { 11269 err = -ENOMEM; 11270 goto err_alloc_etherdev; 11271 } 11272 11273 SET_NETDEV_DEV(netdev, &pdev->dev); 11274 11275 adapter = netdev_priv(netdev); 11276 11277 adapter->netdev = netdev; 11278 adapter->pdev = pdev; 11279 hw = &adapter->hw; 11280 hw->back = adapter; 11281 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); 11282 11283 hw->hw_addr = ioremap(pci_resource_start(pdev, 0), 11284 pci_resource_len(pdev, 0)); 11285 adapter->io_addr = hw->hw_addr; 11286 if (!hw->hw_addr) { 11287 err = -EIO; 11288 goto err_ioremap; 11289 } 11290 11291 netdev->netdev_ops = &ixgbe_netdev_ops; 11292 ixgbe_set_ethtool_ops(netdev); 11293 netdev->watchdog_timeo = 5 * HZ; 11294 strscpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); 11295 11296 /* Setup hw api */ 11297 hw->mac.ops = *ii->mac_ops; 11298 hw->mac.type = ii->mac; 11299 hw->mvals = ii->mvals; 11300 if (ii->link_ops) 11301 hw->link.ops = *ii->link_ops; 11302 11303 /* EEPROM */ 11304 hw->eeprom.ops = *ii->eeprom_ops; 11305 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); 11306 if (ixgbe_removed(hw->hw_addr)) { 11307 err = -EIO; 11308 goto err_ioremap; 11309 } 11310 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */ 11311 if (!(eec & BIT(8))) 11312 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic; 11313 11314 /* PHY */ 11315 hw->phy.ops = *ii->phy_ops; 11316 hw->phy.sfp_type = ixgbe_sfp_type_unknown; 11317 /* ixgbe_identify_phy_generic will set prtad and mmds properly */ 11318 hw->phy.mdio.prtad = MDIO_PRTAD_NONE; 11319 hw->phy.mdio.mmds = 0; 11320 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 11321 hw->phy.mdio.dev = netdev; 11322 hw->phy.mdio.mdio_read = ixgbe_mdio_read; 11323 hw->phy.mdio.mdio_write = ixgbe_mdio_write; 11324 11325 /* setup the private structure */ 11326 err = ixgbe_sw_init(adapter, ii); 11327 if (err) 11328 goto err_sw_init; 11329 11330 if (adapter->hw.mac.type == ixgbe_mac_e610) { 11331 err = ixgbe_get_caps(&adapter->hw); 11332 if (err) 11333 dev_err(&pdev->dev, "ixgbe_get_caps failed %d\n", err); 11334 } 11335 11336 if (adapter->hw.mac.type == ixgbe_mac_82599EB) 11337 adapter->flags2 |= IXGBE_FLAG2_AUTO_DISABLE_VF; 11338 11339 switch (adapter->hw.mac.type) { 11340 case ixgbe_mac_X550: 11341 case ixgbe_mac_X550EM_x: 11342 case ixgbe_mac_e610: 11343 netdev->udp_tunnel_nic_info = &ixgbe_udp_tunnels_x550; 11344 break; 11345 case ixgbe_mac_x550em_a: 11346 netdev->udp_tunnel_nic_info = &ixgbe_udp_tunnels_x550em_a; 11347 break; 11348 default: 11349 break; 11350 } 11351 11352 /* Make sure the SWFW semaphore is in a valid state */ 11353 if (hw->mac.ops.init_swfw_sync) 11354 hw->mac.ops.init_swfw_sync(hw); 11355 11356 /* Make it possible the adapter to be woken up via WOL */ 11357 switch (adapter->hw.mac.type) { 11358 case ixgbe_mac_82599EB: 11359 case ixgbe_mac_X540: 11360 case ixgbe_mac_X550: 11361 case ixgbe_mac_X550EM_x: 11362 case ixgbe_mac_x550em_a: 11363 case ixgbe_mac_e610: 11364 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 11365 break; 11366 default: 11367 break; 11368 } 11369 11370 /* 11371 * If there is a fan on this device and it has failed log the 11372 * failure. 11373 */ 11374 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { 11375 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); 11376 if (esdp & IXGBE_ESDP_SDP1) 11377 e_crit(probe, "Fan has stopped, replace the adapter\n"); 11378 } 11379 11380 if (allow_unsupported_sfp) 11381 hw->allow_unsupported_sfp = allow_unsupported_sfp; 11382 11383 /* reset_hw fills in the perm_addr as well */ 11384 hw->phy.reset_if_overtemp = true; 11385 err = hw->mac.ops.reset_hw(hw); 11386 hw->phy.reset_if_overtemp = false; 11387 ixgbe_set_eee_capable(adapter); 11388 if (err == -ENOENT) { 11389 err = 0; 11390 } else if (err == -EOPNOTSUPP) { 11391 e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n"); 11392 e_dev_err("Reload the driver after installing a supported module.\n"); 11393 goto err_sw_init; 11394 } else if (err) { 11395 e_dev_err("HW Init failed: %d\n", err); 11396 goto err_sw_init; 11397 } 11398 11399 #ifdef CONFIG_PCI_IOV 11400 /* SR-IOV not supported on the 82598 */ 11401 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 11402 goto skip_sriov; 11403 /* Mailbox */ 11404 ixgbe_init_mbx_params_pf(hw); 11405 hw->mbx.ops = ii->mbx_ops; 11406 pci_sriov_set_totalvfs(pdev, IXGBE_MAX_VFS_DRV_LIMIT); 11407 ixgbe_enable_sriov(adapter, max_vfs); 11408 skip_sriov: 11409 11410 #endif 11411 netdev->features = NETIF_F_SG | 11412 NETIF_F_TSO | 11413 NETIF_F_TSO6 | 11414 NETIF_F_RXHASH | 11415 NETIF_F_RXCSUM | 11416 NETIF_F_HW_CSUM; 11417 11418 #define IXGBE_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \ 11419 NETIF_F_GSO_GRE_CSUM | \ 11420 NETIF_F_GSO_IPXIP4 | \ 11421 NETIF_F_GSO_IPXIP6 | \ 11422 NETIF_F_GSO_UDP_TUNNEL | \ 11423 NETIF_F_GSO_UDP_TUNNEL_CSUM) 11424 11425 netdev->gso_partial_features = IXGBE_GSO_PARTIAL_FEATURES; 11426 netdev->features |= NETIF_F_GSO_PARTIAL | 11427 IXGBE_GSO_PARTIAL_FEATURES; 11428 11429 if (hw->mac.type >= ixgbe_mac_82599EB) 11430 netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_GSO_UDP_L4; 11431 11432 #ifdef CONFIG_IXGBE_IPSEC 11433 #define IXGBE_ESP_FEATURES (NETIF_F_HW_ESP | \ 11434 NETIF_F_HW_ESP_TX_CSUM | \ 11435 NETIF_F_GSO_ESP) 11436 11437 if (adapter->ipsec) 11438 netdev->features |= IXGBE_ESP_FEATURES; 11439 #endif 11440 /* copy netdev features into list of user selectable features */ 11441 netdev->hw_features |= netdev->features | 11442 NETIF_F_HW_VLAN_CTAG_FILTER | 11443 NETIF_F_HW_VLAN_CTAG_RX | 11444 NETIF_F_HW_VLAN_CTAG_TX | 11445 NETIF_F_RXALL | 11446 NETIF_F_HW_L2FW_DOFFLOAD; 11447 11448 if (hw->mac.type >= ixgbe_mac_82599EB) 11449 netdev->hw_features |= NETIF_F_NTUPLE | 11450 NETIF_F_HW_TC; 11451 11452 netdev->features |= NETIF_F_HIGHDMA; 11453 11454 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; 11455 netdev->hw_enc_features |= netdev->vlan_features; 11456 netdev->mpls_features |= NETIF_F_SG | 11457 NETIF_F_TSO | 11458 NETIF_F_TSO6 | 11459 NETIF_F_HW_CSUM; 11460 netdev->mpls_features |= IXGBE_GSO_PARTIAL_FEATURES; 11461 11462 /* set this bit last since it cannot be part of vlan_features */ 11463 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | 11464 NETIF_F_HW_VLAN_CTAG_RX | 11465 NETIF_F_HW_VLAN_CTAG_TX; 11466 11467 netdev->priv_flags |= IFF_UNICAST_FLT; 11468 netdev->priv_flags |= IFF_SUPP_NOFCS; 11469 11470 netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | 11471 NETDEV_XDP_ACT_XSK_ZEROCOPY; 11472 11473 /* MTU range: 68 - 9710 */ 11474 netdev->min_mtu = ETH_MIN_MTU; 11475 netdev->max_mtu = IXGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN); 11476 11477 #ifdef CONFIG_IXGBE_DCB 11478 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE) 11479 netdev->dcbnl_ops = &ixgbe_dcbnl_ops; 11480 #endif 11481 11482 #ifdef IXGBE_FCOE 11483 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) { 11484 unsigned int fcoe_l; 11485 11486 if (hw->mac.ops.get_device_caps) { 11487 hw->mac.ops.get_device_caps(hw, &device_caps); 11488 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS) 11489 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 11490 } 11491 11492 11493 fcoe_l = min_t(int, IXGBE_FCRETA_SIZE, num_online_cpus()); 11494 adapter->ring_feature[RING_F_FCOE].limit = fcoe_l; 11495 11496 netdev->features |= NETIF_F_FSO | 11497 NETIF_F_FCOE_CRC; 11498 11499 netdev->vlan_features |= NETIF_F_FSO | 11500 NETIF_F_FCOE_CRC; 11501 } 11502 #endif /* IXGBE_FCOE */ 11503 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) 11504 netdev->hw_features |= NETIF_F_LRO; 11505 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 11506 netdev->features |= NETIF_F_LRO; 11507 11508 if (ixgbe_check_fw_error(adapter)) { 11509 err = -EIO; 11510 goto err_sw_init; 11511 } 11512 11513 /* make sure the EEPROM is good */ 11514 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) { 11515 e_dev_err("The EEPROM Checksum Is Not Valid\n"); 11516 err = -EIO; 11517 goto err_sw_init; 11518 } 11519 11520 eth_platform_get_mac_address(&adapter->pdev->dev, 11521 adapter->hw.mac.perm_addr); 11522 11523 eth_hw_addr_set(netdev, hw->mac.perm_addr); 11524 11525 if (!is_valid_ether_addr(netdev->dev_addr)) { 11526 e_dev_err("invalid MAC address\n"); 11527 err = -EIO; 11528 goto err_sw_init; 11529 } 11530 11531 /* Set hw->mac.addr to permanent MAC address */ 11532 ether_addr_copy(hw->mac.addr, hw->mac.perm_addr); 11533 ixgbe_mac_set_default_filter(adapter); 11534 11535 if (hw->mac.type == ixgbe_mac_e610) 11536 mutex_init(&hw->aci.lock); 11537 timer_setup(&adapter->service_timer, ixgbe_service_timer, 0); 11538 11539 if (ixgbe_removed(hw->hw_addr)) { 11540 err = -EIO; 11541 goto err_sw_init; 11542 } 11543 INIT_WORK(&adapter->service_task, ixgbe_service_task); 11544 set_bit(__IXGBE_SERVICE_INITED, &adapter->state); 11545 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 11546 11547 err = ixgbe_init_interrupt_scheme(adapter); 11548 if (err) 11549 goto err_sw_init; 11550 11551 for (i = 0; i < adapter->num_rx_queues; i++) 11552 u64_stats_init(&adapter->rx_ring[i]->syncp); 11553 for (i = 0; i < adapter->num_tx_queues; i++) 11554 u64_stats_init(&adapter->tx_ring[i]->syncp); 11555 for (i = 0; i < adapter->num_xdp_queues; i++) 11556 u64_stats_init(&adapter->xdp_ring[i]->syncp); 11557 11558 /* WOL not supported for all devices */ 11559 adapter->wol = 0; 11560 hw->eeprom.ops.read(hw, 0x2c, &adapter->eeprom_cap); 11561 hw->wol_enabled = ixgbe_wol_supported(adapter, pdev->device, 11562 pdev->subsystem_device); 11563 if (hw->wol_enabled) 11564 adapter->wol = IXGBE_WUFC_MAG; 11565 11566 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); 11567 11568 /* save off EEPROM version number */ 11569 ixgbe_set_fw_version(adapter); 11570 11571 /* pick up the PCI bus settings for reporting later */ 11572 if (ixgbe_pcie_from_parent(hw)) 11573 ixgbe_get_parent_bus_info(adapter); 11574 else 11575 hw->mac.ops.get_bus_info(hw); 11576 11577 /* calculate the expected PCIe bandwidth required for optimal 11578 * performance. Note that some older parts will never have enough 11579 * bandwidth due to being older generation PCIe parts. We clamp these 11580 * parts to ensure no warning is displayed if it can't be fixed. 11581 */ 11582 switch (hw->mac.type) { 11583 case ixgbe_mac_82598EB: 11584 expected_gts = min(ixgbe_enumerate_functions(adapter) * 10, 16); 11585 break; 11586 default: 11587 expected_gts = ixgbe_enumerate_functions(adapter) * 10; 11588 break; 11589 } 11590 11591 /* don't check link if we failed to enumerate functions */ 11592 if (expected_gts > 0) 11593 ixgbe_check_minimum_link(adapter, expected_gts); 11594 11595 err = ixgbe_read_pba_string_generic(hw, part_str, sizeof(part_str)); 11596 if (err) 11597 strscpy(part_str, "Unknown", sizeof(part_str)); 11598 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present) 11599 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n", 11600 hw->mac.type, hw->phy.type, hw->phy.sfp_type, 11601 part_str); 11602 else 11603 e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n", 11604 hw->mac.type, hw->phy.type, part_str); 11605 11606 e_dev_info("%pM\n", netdev->dev_addr); 11607 11608 /* reset the hardware with the new settings */ 11609 err = hw->mac.ops.start_hw(hw); 11610 if (err == -EACCES) { 11611 /* We are running on a pre-production device, log a warning */ 11612 e_dev_warn("This device is a pre-production adapter/LOM. " 11613 "Please be aware there may be issues associated " 11614 "with your hardware. If you are experiencing " 11615 "problems please contact your Intel or hardware " 11616 "representative who provided you with this " 11617 "hardware.\n"); 11618 } 11619 strcpy(netdev->name, "eth%d"); 11620 pci_set_drvdata(pdev, adapter); 11621 err = register_netdev(netdev); 11622 if (err) 11623 goto err_register; 11624 11625 11626 /* power down the optics for 82599 SFP+ fiber */ 11627 if (hw->mac.ops.disable_tx_laser) 11628 hw->mac.ops.disable_tx_laser(hw); 11629 11630 /* carrier off reporting is important to ethtool even BEFORE open */ 11631 netif_carrier_off(netdev); 11632 11633 #ifdef CONFIG_IXGBE_DCA 11634 if (dca_add_requester(&pdev->dev) == 0) { 11635 adapter->flags |= IXGBE_FLAG_DCA_ENABLED; 11636 ixgbe_setup_dca(adapter); 11637 } 11638 #endif 11639 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 11640 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs); 11641 for (i = 0; i < adapter->num_vfs; i++) 11642 ixgbe_vf_configuration(pdev, (i | 0x10000000)); 11643 } 11644 11645 /* firmware requires driver version to be 0xFFFFFFFF 11646 * since os does not support feature 11647 */ 11648 if (hw->mac.ops.set_fw_drv_ver) 11649 hw->mac.ops.set_fw_drv_ver(hw, 0xFF, 0xFF, 0xFF, 0xFF, 11650 sizeof(UTS_RELEASE) - 1, 11651 UTS_RELEASE); 11652 11653 /* add san mac addr to netdev */ 11654 ixgbe_add_sanmac_netdev(netdev); 11655 11656 e_dev_info("%s\n", ixgbe_default_device_descr); 11657 11658 #ifdef CONFIG_IXGBE_HWMON 11659 if (ixgbe_sysfs_init(adapter)) 11660 e_err(probe, "failed to allocate sysfs resources\n"); 11661 #endif /* CONFIG_IXGBE_HWMON */ 11662 11663 ixgbe_dbg_adapter_init(adapter); 11664 11665 /* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */ 11666 if (ixgbe_mng_enabled(hw) && ixgbe_is_sfp(hw) && hw->mac.ops.setup_link) 11667 hw->mac.ops.setup_link(hw, 11668 IXGBE_LINK_SPEED_10GB_FULL | IXGBE_LINK_SPEED_1GB_FULL, 11669 true); 11670 11671 err = ixgbe_mii_bus_init(hw); 11672 if (err) 11673 goto err_netdev; 11674 11675 return 0; 11676 11677 err_netdev: 11678 unregister_netdev(netdev); 11679 err_register: 11680 ixgbe_release_hw_control(adapter); 11681 ixgbe_clear_interrupt_scheme(adapter); 11682 if (hw->mac.type == ixgbe_mac_e610) 11683 mutex_destroy(&adapter->hw.aci.lock); 11684 err_sw_init: 11685 ixgbe_disable_sriov(adapter); 11686 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; 11687 iounmap(adapter->io_addr); 11688 kfree(adapter->jump_tables[0]); 11689 kfree(adapter->mac_table); 11690 kfree(adapter->rss_key); 11691 bitmap_free(adapter->af_xdp_zc_qps); 11692 err_ioremap: 11693 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); 11694 free_netdev(netdev); 11695 err_alloc_etherdev: 11696 pci_release_mem_regions(pdev); 11697 err_pci_reg: 11698 err_dma: 11699 if (!adapter || disable_dev) 11700 pci_disable_device(pdev); 11701 return err; 11702 } 11703 11704 /** 11705 * ixgbe_remove - Device Removal Routine 11706 * @pdev: PCI device information struct 11707 * 11708 * ixgbe_remove is called by the PCI subsystem to alert the driver 11709 * that it should release a PCI device. The could be caused by a 11710 * Hot-Plug event, or because the driver is going to be removed from 11711 * memory. 11712 **/ 11713 static void ixgbe_remove(struct pci_dev *pdev) 11714 { 11715 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 11716 struct net_device *netdev; 11717 bool disable_dev; 11718 int i; 11719 11720 /* if !adapter then we already cleaned up in probe */ 11721 if (!adapter) 11722 return; 11723 11724 netdev = adapter->netdev; 11725 ixgbe_dbg_adapter_exit(adapter); 11726 11727 set_bit(__IXGBE_REMOVING, &adapter->state); 11728 cancel_work_sync(&adapter->service_task); 11729 11730 if (adapter->hw.mac.type == ixgbe_mac_e610) { 11731 ixgbe_disable_link_status_events(adapter); 11732 mutex_destroy(&adapter->hw.aci.lock); 11733 } 11734 11735 if (adapter->mii_bus) 11736 mdiobus_unregister(adapter->mii_bus); 11737 11738 #ifdef CONFIG_IXGBE_DCA 11739 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { 11740 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; 11741 dca_remove_requester(&pdev->dev); 11742 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 11743 IXGBE_DCA_CTRL_DCA_DISABLE); 11744 } 11745 11746 #endif 11747 #ifdef CONFIG_IXGBE_HWMON 11748 ixgbe_sysfs_exit(adapter); 11749 #endif /* CONFIG_IXGBE_HWMON */ 11750 11751 /* remove the added san mac */ 11752 ixgbe_del_sanmac_netdev(netdev); 11753 11754 #ifdef CONFIG_PCI_IOV 11755 ixgbe_disable_sriov(adapter); 11756 #endif 11757 if (netdev->reg_state == NETREG_REGISTERED) 11758 unregister_netdev(netdev); 11759 11760 ixgbe_stop_ipsec_offload(adapter); 11761 ixgbe_clear_interrupt_scheme(adapter); 11762 11763 ixgbe_release_hw_control(adapter); 11764 11765 #ifdef CONFIG_DCB 11766 kfree(adapter->ixgbe_ieee_pfc); 11767 kfree(adapter->ixgbe_ieee_ets); 11768 11769 #endif 11770 iounmap(adapter->io_addr); 11771 pci_release_mem_regions(pdev); 11772 11773 e_dev_info("complete\n"); 11774 11775 for (i = 0; i < IXGBE_MAX_LINK_HANDLE; i++) { 11776 if (adapter->jump_tables[i]) { 11777 kfree(adapter->jump_tables[i]->input); 11778 kfree(adapter->jump_tables[i]->mask); 11779 } 11780 kfree(adapter->jump_tables[i]); 11781 } 11782 11783 kfree(adapter->mac_table); 11784 kfree(adapter->rss_key); 11785 bitmap_free(adapter->af_xdp_zc_qps); 11786 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); 11787 free_netdev(netdev); 11788 11789 if (disable_dev) 11790 pci_disable_device(pdev); 11791 } 11792 11793 /** 11794 * ixgbe_io_error_detected - called when PCI error is detected 11795 * @pdev: Pointer to PCI device 11796 * @state: The current pci connection state 11797 * 11798 * This function is called after a PCI bus error affecting 11799 * this device has been detected. 11800 */ 11801 static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, 11802 pci_channel_state_t state) 11803 { 11804 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 11805 struct net_device *netdev = adapter->netdev; 11806 11807 #ifdef CONFIG_PCI_IOV 11808 struct ixgbe_hw *hw = &adapter->hw; 11809 struct pci_dev *bdev, *vfdev; 11810 u32 dw0, dw1, dw2, dw3; 11811 int vf, pos; 11812 u16 req_id, pf_func; 11813 11814 if (adapter->hw.mac.type == ixgbe_mac_82598EB || 11815 adapter->num_vfs == 0) 11816 goto skip_bad_vf_detection; 11817 11818 bdev = pdev->bus->self; 11819 while (bdev && (pci_pcie_type(bdev) != PCI_EXP_TYPE_ROOT_PORT)) 11820 bdev = bdev->bus->self; 11821 11822 if (!bdev) 11823 goto skip_bad_vf_detection; 11824 11825 pos = pci_find_ext_capability(bdev, PCI_EXT_CAP_ID_ERR); 11826 if (!pos) 11827 goto skip_bad_vf_detection; 11828 11829 dw0 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG); 11830 dw1 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 4); 11831 dw2 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 8); 11832 dw3 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 12); 11833 if (ixgbe_removed(hw->hw_addr)) 11834 goto skip_bad_vf_detection; 11835 11836 req_id = dw1 >> 16; 11837 /* On the 82599 if bit 7 of the requestor ID is set then it's a VF */ 11838 if (!(req_id & 0x0080)) 11839 goto skip_bad_vf_detection; 11840 11841 pf_func = req_id & 0x01; 11842 if ((pf_func & 1) == (pdev->devfn & 1)) { 11843 unsigned int device_id; 11844 11845 vf = FIELD_GET(0x7F, req_id); 11846 e_dev_err("VF %d has caused a PCIe error\n", vf); 11847 e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: " 11848 "%8.8x\tdw3: %8.8x\n", 11849 dw0, dw1, dw2, dw3); 11850 switch (adapter->hw.mac.type) { 11851 case ixgbe_mac_82599EB: 11852 device_id = IXGBE_82599_VF_DEVICE_ID; 11853 break; 11854 case ixgbe_mac_X540: 11855 device_id = IXGBE_X540_VF_DEVICE_ID; 11856 break; 11857 case ixgbe_mac_X550: 11858 device_id = IXGBE_DEV_ID_X550_VF; 11859 break; 11860 case ixgbe_mac_X550EM_x: 11861 device_id = IXGBE_DEV_ID_X550EM_X_VF; 11862 break; 11863 case ixgbe_mac_x550em_a: 11864 device_id = IXGBE_DEV_ID_X550EM_A_VF; 11865 break; 11866 case ixgbe_mac_e610: 11867 device_id = IXGBE_DEV_ID_E610_VF; 11868 break; 11869 default: 11870 device_id = 0; 11871 break; 11872 } 11873 11874 /* Find the pci device of the offending VF */ 11875 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, device_id, NULL); 11876 while (vfdev) { 11877 if (vfdev->devfn == (req_id & 0xFF)) 11878 break; 11879 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, 11880 device_id, vfdev); 11881 } 11882 /* 11883 * There's a slim chance the VF could have been hot plugged, 11884 * so if it is no longer present we don't need to issue the 11885 * VFLR. Just clean up the AER in that case. 11886 */ 11887 if (vfdev) { 11888 pcie_flr(vfdev); 11889 /* Free device reference count */ 11890 pci_dev_put(vfdev); 11891 } 11892 } 11893 11894 /* 11895 * Even though the error may have occurred on the other port 11896 * we still need to increment the vf error reference count for 11897 * both ports because the I/O resume function will be called 11898 * for both of them. 11899 */ 11900 adapter->vferr_refcount++; 11901 11902 return PCI_ERS_RESULT_RECOVERED; 11903 11904 skip_bad_vf_detection: 11905 #endif /* CONFIG_PCI_IOV */ 11906 if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) 11907 return PCI_ERS_RESULT_DISCONNECT; 11908 11909 if (!netif_device_present(netdev)) 11910 return PCI_ERS_RESULT_DISCONNECT; 11911 11912 rtnl_lock(); 11913 netif_device_detach(netdev); 11914 11915 if (netif_running(netdev)) 11916 ixgbe_close_suspend(adapter); 11917 11918 if (state == pci_channel_io_perm_failure) { 11919 rtnl_unlock(); 11920 return PCI_ERS_RESULT_DISCONNECT; 11921 } 11922 11923 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) 11924 pci_disable_device(pdev); 11925 rtnl_unlock(); 11926 11927 /* Request a slot reset. */ 11928 return PCI_ERS_RESULT_NEED_RESET; 11929 } 11930 11931 /** 11932 * ixgbe_io_slot_reset - called after the pci bus has been reset. 11933 * @pdev: Pointer to PCI device 11934 * 11935 * Restart the card from scratch, as if from a cold-boot. 11936 */ 11937 static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) 11938 { 11939 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 11940 pci_ers_result_t result; 11941 11942 if (pci_enable_device_mem(pdev)) { 11943 e_err(probe, "Cannot re-enable PCI device after reset.\n"); 11944 result = PCI_ERS_RESULT_DISCONNECT; 11945 } else { 11946 smp_mb__before_atomic(); 11947 clear_bit(__IXGBE_DISABLED, &adapter->state); 11948 adapter->hw.hw_addr = adapter->io_addr; 11949 pci_set_master(pdev); 11950 pci_restore_state(pdev); 11951 pci_save_state(pdev); 11952 11953 pci_wake_from_d3(pdev, false); 11954 11955 ixgbe_reset(adapter); 11956 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 11957 result = PCI_ERS_RESULT_RECOVERED; 11958 } 11959 11960 return result; 11961 } 11962 11963 /** 11964 * ixgbe_io_resume - called when traffic can start flowing again. 11965 * @pdev: Pointer to PCI device 11966 * 11967 * This callback is called when the error recovery driver tells us that 11968 * its OK to resume normal operation. 11969 */ 11970 static void ixgbe_io_resume(struct pci_dev *pdev) 11971 { 11972 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 11973 struct net_device *netdev = adapter->netdev; 11974 11975 #ifdef CONFIG_PCI_IOV 11976 if (adapter->vferr_refcount) { 11977 e_info(drv, "Resuming after VF err\n"); 11978 adapter->vferr_refcount--; 11979 return; 11980 } 11981 11982 #endif 11983 rtnl_lock(); 11984 if (netif_running(netdev)) 11985 ixgbe_open(netdev); 11986 11987 netif_device_attach(netdev); 11988 rtnl_unlock(); 11989 } 11990 11991 static const struct pci_error_handlers ixgbe_err_handler = { 11992 .error_detected = ixgbe_io_error_detected, 11993 .slot_reset = ixgbe_io_slot_reset, 11994 .resume = ixgbe_io_resume, 11995 }; 11996 11997 static DEFINE_SIMPLE_DEV_PM_OPS(ixgbe_pm_ops, ixgbe_suspend, ixgbe_resume); 11998 11999 static struct pci_driver ixgbe_driver = { 12000 .name = ixgbe_driver_name, 12001 .id_table = ixgbe_pci_tbl, 12002 .probe = ixgbe_probe, 12003 .remove = ixgbe_remove, 12004 .driver.pm = pm_sleep_ptr(&ixgbe_pm_ops), 12005 .shutdown = ixgbe_shutdown, 12006 .sriov_configure = ixgbe_pci_sriov_configure, 12007 .err_handler = &ixgbe_err_handler 12008 }; 12009 12010 /** 12011 * ixgbe_init_module - Driver Registration Routine 12012 * 12013 * ixgbe_init_module is the first routine called when the driver is 12014 * loaded. All it does is register with the PCI subsystem. 12015 **/ 12016 static int __init ixgbe_init_module(void) 12017 { 12018 int ret; 12019 pr_info("%s\n", ixgbe_driver_string); 12020 pr_info("%s\n", ixgbe_copyright); 12021 12022 ixgbe_wq = create_singlethread_workqueue(ixgbe_driver_name); 12023 if (!ixgbe_wq) { 12024 pr_err("%s: Failed to create workqueue\n", ixgbe_driver_name); 12025 return -ENOMEM; 12026 } 12027 12028 ixgbe_dbg_init(); 12029 12030 ret = pci_register_driver(&ixgbe_driver); 12031 if (ret) { 12032 destroy_workqueue(ixgbe_wq); 12033 ixgbe_dbg_exit(); 12034 return ret; 12035 } 12036 12037 #ifdef CONFIG_IXGBE_DCA 12038 dca_register_notify(&dca_notifier); 12039 #endif 12040 12041 return 0; 12042 } 12043 12044 module_init(ixgbe_init_module); 12045 12046 /** 12047 * ixgbe_exit_module - Driver Exit Cleanup Routine 12048 * 12049 * ixgbe_exit_module is called just before the driver is removed 12050 * from memory. 12051 **/ 12052 static void __exit ixgbe_exit_module(void) 12053 { 12054 #ifdef CONFIG_IXGBE_DCA 12055 dca_unregister_notify(&dca_notifier); 12056 #endif 12057 pci_unregister_driver(&ixgbe_driver); 12058 12059 ixgbe_dbg_exit(); 12060 if (ixgbe_wq) { 12061 destroy_workqueue(ixgbe_wq); 12062 ixgbe_wq = NULL; 12063 } 12064 } 12065 12066 #ifdef CONFIG_IXGBE_DCA 12067 static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event, 12068 void *p) 12069 { 12070 int ret_val; 12071 12072 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event, 12073 __ixgbe_notify_dca); 12074 12075 return ret_val ? NOTIFY_BAD : NOTIFY_DONE; 12076 } 12077 12078 #endif /* CONFIG_IXGBE_DCA */ 12079 12080 module_exit(ixgbe_exit_module); 12081 12082 /* ixgbe_main.c */ 12083