1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright(c) 1999 - 2018 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/xdp_sock_drv.h> 40 #include <net/xfrm.h> 41 42 #include "ixgbe.h" 43 #include "ixgbe_common.h" 44 #include "ixgbe_dcb_82599.h" 45 #include "ixgbe_phy.h" 46 #include "ixgbe_sriov.h" 47 #include "ixgbe_model.h" 48 #include "ixgbe_txrx_common.h" 49 50 char ixgbe_driver_name[] = "ixgbe"; 51 static const char ixgbe_driver_string[] = 52 "Intel(R) 10 Gigabit PCI Express Network Driver"; 53 #ifdef IXGBE_FCOE 54 char ixgbe_default_device_descr[] = 55 "Intel(R) 10 Gigabit Network Connection"; 56 #else 57 static char ixgbe_default_device_descr[] = 58 "Intel(R) 10 Gigabit Network Connection"; 59 #endif 60 static const char ixgbe_copyright[] = 61 "Copyright (c) 1999-2016 Intel Corporation."; 62 63 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"; 64 65 static const struct ixgbe_info *ixgbe_info_tbl[] = { 66 [board_82598] = &ixgbe_82598_info, 67 [board_82599] = &ixgbe_82599_info, 68 [board_X540] = &ixgbe_X540_info, 69 [board_X550] = &ixgbe_X550_info, 70 [board_X550EM_x] = &ixgbe_X550EM_x_info, 71 [board_x550em_x_fw] = &ixgbe_x550em_x_fw_info, 72 [board_x550em_a] = &ixgbe_x550em_a_info, 73 [board_x550em_a_fw] = &ixgbe_x550em_a_fw_info, 74 }; 75 76 /* ixgbe_pci_tbl - PCI Device ID Table 77 * 78 * Wildcard entries (PCI_ANY_ID) should come last 79 * Last entry must be all 0s 80 * 81 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 82 * Class, Class Mask, private data (not used) } 83 */ 84 static const struct pci_device_id ixgbe_pci_tbl[] = { 85 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), board_82598 }, 86 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), board_82598 }, 87 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), board_82598 }, 88 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), board_82598 }, 89 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2), board_82598 }, 90 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), board_82598 }, 91 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), board_82598 }, 92 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), board_82598 }, 93 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), board_82598 }, 94 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), board_82598 }, 95 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), board_82598 }, 96 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), board_82598 }, 97 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), board_82599 }, 98 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM), board_82599 }, 99 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR), board_82599 }, 100 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), board_82599 }, 101 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM), board_82599 }, 102 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ), board_82599 }, 103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4), board_82599 }, 104 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE), board_82599 }, 105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE), board_82599 }, 106 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM), board_82599 }, 107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE), board_82599 }, 108 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T), board_X540 }, 109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2), board_82599 }, 110 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS), board_82599 }, 111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_QSFP_SF_QP), board_82599 }, 112 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599EN_SFP), board_82599 }, 113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF_QP), board_82599 }, 114 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T1), board_X540 }, 115 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T), board_X550}, 116 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T1), board_X550}, 117 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KX4), board_X550EM_x}, 118 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_XFI), board_X550EM_x}, 119 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KR), board_X550EM_x}, 120 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_10G_T), board_X550EM_x}, 121 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_SFP), board_X550EM_x}, 122 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_1G_T), board_x550em_x_fw}, 123 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR), board_x550em_a }, 124 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR_L), board_x550em_a }, 125 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP_N), board_x550em_a }, 126 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII), board_x550em_a }, 127 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII_L), board_x550em_a }, 128 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_10G_T), board_x550em_a}, 129 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP), board_x550em_a }, 130 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T), board_x550em_a_fw }, 131 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T_L), board_x550em_a_fw }, 132 /* required last entry */ 133 {0, } 134 }; 135 MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); 136 137 #ifdef CONFIG_IXGBE_DCA 138 static int ixgbe_notify_dca(struct notifier_block *, unsigned long event, 139 void *p); 140 static struct notifier_block dca_notifier = { 141 .notifier_call = ixgbe_notify_dca, 142 .next = NULL, 143 .priority = 0 144 }; 145 #endif 146 147 #ifdef CONFIG_PCI_IOV 148 static unsigned int max_vfs; 149 module_param(max_vfs, uint, 0); 150 MODULE_PARM_DESC(max_vfs, 151 "Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)"); 152 #endif /* CONFIG_PCI_IOV */ 153 154 static bool allow_unsupported_sfp; 155 module_param(allow_unsupported_sfp, bool, 0); 156 MODULE_PARM_DESC(allow_unsupported_sfp, 157 "Allow unsupported and untested SFP+ modules on 82599-based adapters"); 158 159 #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) 160 static int debug = -1; 161 module_param(debug, int, 0); 162 MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); 163 164 MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); 165 MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); 166 MODULE_LICENSE("GPL v2"); 167 168 DEFINE_STATIC_KEY_FALSE(ixgbe_xdp_locking_key); 169 EXPORT_SYMBOL(ixgbe_xdp_locking_key); 170 171 static struct workqueue_struct *ixgbe_wq; 172 173 static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev); 174 static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *); 175 176 static const struct net_device_ops ixgbe_netdev_ops; 177 178 static bool netif_is_ixgbe(struct net_device *dev) 179 { 180 return dev && (dev->netdev_ops == &ixgbe_netdev_ops); 181 } 182 183 static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter, 184 u32 reg, u16 *value) 185 { 186 struct pci_dev *parent_dev; 187 struct pci_bus *parent_bus; 188 189 parent_bus = adapter->pdev->bus->parent; 190 if (!parent_bus) 191 return -1; 192 193 parent_dev = parent_bus->self; 194 if (!parent_dev) 195 return -1; 196 197 if (!pci_is_pcie(parent_dev)) 198 return -1; 199 200 pcie_capability_read_word(parent_dev, reg, value); 201 if (*value == IXGBE_FAILED_READ_CFG_WORD && 202 ixgbe_check_cfg_remove(&adapter->hw, parent_dev)) 203 return -1; 204 return 0; 205 } 206 207 static s32 ixgbe_get_parent_bus_info(struct ixgbe_adapter *adapter) 208 { 209 struct ixgbe_hw *hw = &adapter->hw; 210 u16 link_status = 0; 211 int err; 212 213 hw->bus.type = ixgbe_bus_type_pci_express; 214 215 /* Get the negotiated link width and speed from PCI config space of the 216 * parent, as this device is behind a switch 217 */ 218 err = ixgbe_read_pci_cfg_word_parent(adapter, 18, &link_status); 219 220 /* assume caller will handle error case */ 221 if (err) 222 return err; 223 224 hw->bus.width = ixgbe_convert_bus_width(link_status); 225 hw->bus.speed = ixgbe_convert_bus_speed(link_status); 226 227 return 0; 228 } 229 230 /** 231 * ixgbe_pcie_from_parent - Determine whether PCIe info should come from parent 232 * @hw: hw specific details 233 * 234 * This function is used by probe to determine whether a device's PCI-Express 235 * bandwidth details should be gathered from the parent bus instead of from the 236 * device. Used to ensure that various locations all have the correct device ID 237 * checks. 238 */ 239 static inline bool ixgbe_pcie_from_parent(struct ixgbe_hw *hw) 240 { 241 switch (hw->device_id) { 242 case IXGBE_DEV_ID_82599_SFP_SF_QP: 243 case IXGBE_DEV_ID_82599_QSFP_SF_QP: 244 return true; 245 default: 246 return false; 247 } 248 } 249 250 static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter, 251 int expected_gts) 252 { 253 struct ixgbe_hw *hw = &adapter->hw; 254 struct pci_dev *pdev; 255 256 /* Some devices are not connected over PCIe and thus do not negotiate 257 * speed. These devices do not have valid bus info, and thus any report 258 * we generate may not be correct. 259 */ 260 if (hw->bus.type == ixgbe_bus_type_internal) 261 return; 262 263 /* determine whether to use the parent device */ 264 if (ixgbe_pcie_from_parent(&adapter->hw)) 265 pdev = adapter->pdev->bus->parent->self; 266 else 267 pdev = adapter->pdev; 268 269 pcie_print_link_status(pdev); 270 } 271 272 static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter) 273 { 274 if (!test_bit(__IXGBE_DOWN, &adapter->state) && 275 !test_bit(__IXGBE_REMOVING, &adapter->state) && 276 !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state)) 277 queue_work(ixgbe_wq, &adapter->service_task); 278 } 279 280 static void ixgbe_remove_adapter(struct ixgbe_hw *hw) 281 { 282 struct ixgbe_adapter *adapter = hw->back; 283 284 if (!hw->hw_addr) 285 return; 286 hw->hw_addr = NULL; 287 e_dev_err("Adapter removed\n"); 288 if (test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) 289 ixgbe_service_event_schedule(adapter); 290 } 291 292 static u32 ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg) 293 { 294 u8 __iomem *reg_addr; 295 u32 value; 296 int i; 297 298 reg_addr = READ_ONCE(hw->hw_addr); 299 if (ixgbe_removed(reg_addr)) 300 return IXGBE_FAILED_READ_REG; 301 302 /* Register read of 0xFFFFFFF can indicate the adapter has been removed, 303 * so perform several status register reads to determine if the adapter 304 * has been removed. 305 */ 306 for (i = 0; i < IXGBE_FAILED_READ_RETRIES; i++) { 307 value = readl(reg_addr + IXGBE_STATUS); 308 if (value != IXGBE_FAILED_READ_REG) 309 break; 310 mdelay(3); 311 } 312 313 if (value == IXGBE_FAILED_READ_REG) 314 ixgbe_remove_adapter(hw); 315 else 316 value = readl(reg_addr + reg); 317 return value; 318 } 319 320 /** 321 * ixgbe_read_reg - Read from device register 322 * @hw: hw specific details 323 * @reg: offset of register to read 324 * 325 * Returns : value read or IXGBE_FAILED_READ_REG if removed 326 * 327 * This function is used to read device registers. It checks for device 328 * removal by confirming any read that returns all ones by checking the 329 * status register value for all ones. This function avoids reading from 330 * the hardware if a removal was previously detected in which case it 331 * returns IXGBE_FAILED_READ_REG (all ones). 332 */ 333 u32 ixgbe_read_reg(struct ixgbe_hw *hw, u32 reg) 334 { 335 u8 __iomem *reg_addr = READ_ONCE(hw->hw_addr); 336 u32 value; 337 338 if (ixgbe_removed(reg_addr)) 339 return IXGBE_FAILED_READ_REG; 340 if (unlikely(hw->phy.nw_mng_if_sel & 341 IXGBE_NW_MNG_IF_SEL_SGMII_ENABLE)) { 342 struct ixgbe_adapter *adapter; 343 int i; 344 345 for (i = 0; i < 200; ++i) { 346 value = readl(reg_addr + IXGBE_MAC_SGMII_BUSY); 347 if (likely(!value)) 348 goto writes_completed; 349 if (value == IXGBE_FAILED_READ_REG) { 350 ixgbe_remove_adapter(hw); 351 return IXGBE_FAILED_READ_REG; 352 } 353 udelay(5); 354 } 355 356 adapter = hw->back; 357 e_warn(hw, "register writes incomplete %08x\n", value); 358 } 359 360 writes_completed: 361 value = readl(reg_addr + reg); 362 if (unlikely(value == IXGBE_FAILED_READ_REG)) 363 value = ixgbe_check_remove(hw, reg); 364 return value; 365 } 366 367 static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev) 368 { 369 u16 value; 370 371 pci_read_config_word(pdev, PCI_VENDOR_ID, &value); 372 if (value == IXGBE_FAILED_READ_CFG_WORD) { 373 ixgbe_remove_adapter(hw); 374 return true; 375 } 376 return false; 377 } 378 379 u16 ixgbe_read_pci_cfg_word(struct ixgbe_hw *hw, u32 reg) 380 { 381 struct ixgbe_adapter *adapter = hw->back; 382 u16 value; 383 384 if (ixgbe_removed(hw->hw_addr)) 385 return IXGBE_FAILED_READ_CFG_WORD; 386 pci_read_config_word(adapter->pdev, reg, &value); 387 if (value == IXGBE_FAILED_READ_CFG_WORD && 388 ixgbe_check_cfg_remove(hw, adapter->pdev)) 389 return IXGBE_FAILED_READ_CFG_WORD; 390 return value; 391 } 392 393 #ifdef CONFIG_PCI_IOV 394 static u32 ixgbe_read_pci_cfg_dword(struct ixgbe_hw *hw, u32 reg) 395 { 396 struct ixgbe_adapter *adapter = hw->back; 397 u32 value; 398 399 if (ixgbe_removed(hw->hw_addr)) 400 return IXGBE_FAILED_READ_CFG_DWORD; 401 pci_read_config_dword(adapter->pdev, reg, &value); 402 if (value == IXGBE_FAILED_READ_CFG_DWORD && 403 ixgbe_check_cfg_remove(hw, adapter->pdev)) 404 return IXGBE_FAILED_READ_CFG_DWORD; 405 return value; 406 } 407 #endif /* CONFIG_PCI_IOV */ 408 409 void ixgbe_write_pci_cfg_word(struct ixgbe_hw *hw, u32 reg, u16 value) 410 { 411 struct ixgbe_adapter *adapter = hw->back; 412 413 if (ixgbe_removed(hw->hw_addr)) 414 return; 415 pci_write_config_word(adapter->pdev, reg, value); 416 } 417 418 static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter) 419 { 420 BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state)); 421 422 /* flush memory to make sure state is correct before next watchdog */ 423 smp_mb__before_atomic(); 424 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 425 } 426 427 struct ixgbe_reg_info { 428 u32 ofs; 429 char *name; 430 }; 431 432 static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = { 433 434 /* General Registers */ 435 {IXGBE_CTRL, "CTRL"}, 436 {IXGBE_STATUS, "STATUS"}, 437 {IXGBE_CTRL_EXT, "CTRL_EXT"}, 438 439 /* Interrupt Registers */ 440 {IXGBE_EICR, "EICR"}, 441 442 /* RX Registers */ 443 {IXGBE_SRRCTL(0), "SRRCTL"}, 444 {IXGBE_DCA_RXCTRL(0), "DRXCTL"}, 445 {IXGBE_RDLEN(0), "RDLEN"}, 446 {IXGBE_RDH(0), "RDH"}, 447 {IXGBE_RDT(0), "RDT"}, 448 {IXGBE_RXDCTL(0), "RXDCTL"}, 449 {IXGBE_RDBAL(0), "RDBAL"}, 450 {IXGBE_RDBAH(0), "RDBAH"}, 451 452 /* TX Registers */ 453 {IXGBE_TDBAL(0), "TDBAL"}, 454 {IXGBE_TDBAH(0), "TDBAH"}, 455 {IXGBE_TDLEN(0), "TDLEN"}, 456 {IXGBE_TDH(0), "TDH"}, 457 {IXGBE_TDT(0), "TDT"}, 458 {IXGBE_TXDCTL(0), "TXDCTL"}, 459 460 /* List Terminator */ 461 { .name = NULL } 462 }; 463 464 465 /* 466 * ixgbe_regdump - register printout routine 467 */ 468 static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo) 469 { 470 int i; 471 char rname[16]; 472 u32 regs[64]; 473 474 switch (reginfo->ofs) { 475 case IXGBE_SRRCTL(0): 476 for (i = 0; i < 64; i++) 477 regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i)); 478 break; 479 case IXGBE_DCA_RXCTRL(0): 480 for (i = 0; i < 64; i++) 481 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i)); 482 break; 483 case IXGBE_RDLEN(0): 484 for (i = 0; i < 64; i++) 485 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i)); 486 break; 487 case IXGBE_RDH(0): 488 for (i = 0; i < 64; i++) 489 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i)); 490 break; 491 case IXGBE_RDT(0): 492 for (i = 0; i < 64; i++) 493 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i)); 494 break; 495 case IXGBE_RXDCTL(0): 496 for (i = 0; i < 64; i++) 497 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); 498 break; 499 case IXGBE_RDBAL(0): 500 for (i = 0; i < 64; i++) 501 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i)); 502 break; 503 case IXGBE_RDBAH(0): 504 for (i = 0; i < 64; i++) 505 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i)); 506 break; 507 case IXGBE_TDBAL(0): 508 for (i = 0; i < 64; i++) 509 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i)); 510 break; 511 case IXGBE_TDBAH(0): 512 for (i = 0; i < 64; i++) 513 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i)); 514 break; 515 case IXGBE_TDLEN(0): 516 for (i = 0; i < 64; i++) 517 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i)); 518 break; 519 case IXGBE_TDH(0): 520 for (i = 0; i < 64; i++) 521 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i)); 522 break; 523 case IXGBE_TDT(0): 524 for (i = 0; i < 64; i++) 525 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i)); 526 break; 527 case IXGBE_TXDCTL(0): 528 for (i = 0; i < 64; i++) 529 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i)); 530 break; 531 default: 532 pr_info("%-15s %08x\n", 533 reginfo->name, IXGBE_READ_REG(hw, reginfo->ofs)); 534 return; 535 } 536 537 i = 0; 538 while (i < 64) { 539 int j; 540 char buf[9 * 8 + 1]; 541 char *p = buf; 542 543 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i, i + 7); 544 for (j = 0; j < 8; j++) 545 p += sprintf(p, " %08x", regs[i++]); 546 pr_err("%-15s%s\n", rname, buf); 547 } 548 549 } 550 551 static void ixgbe_print_buffer(struct ixgbe_ring *ring, int n) 552 { 553 struct ixgbe_tx_buffer *tx_buffer; 554 555 tx_buffer = &ring->tx_buffer_info[ring->next_to_clean]; 556 pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n", 557 n, ring->next_to_use, ring->next_to_clean, 558 (u64)dma_unmap_addr(tx_buffer, dma), 559 dma_unmap_len(tx_buffer, len), 560 tx_buffer->next_to_watch, 561 (u64)tx_buffer->time_stamp); 562 } 563 564 /* 565 * ixgbe_dump - Print registers, tx-rings and rx-rings 566 */ 567 static void ixgbe_dump(struct ixgbe_adapter *adapter) 568 { 569 struct net_device *netdev = adapter->netdev; 570 struct ixgbe_hw *hw = &adapter->hw; 571 struct ixgbe_reg_info *reginfo; 572 int n = 0; 573 struct ixgbe_ring *ring; 574 struct ixgbe_tx_buffer *tx_buffer; 575 union ixgbe_adv_tx_desc *tx_desc; 576 struct my_u0 { u64 a; u64 b; } *u0; 577 struct ixgbe_ring *rx_ring; 578 union ixgbe_adv_rx_desc *rx_desc; 579 struct ixgbe_rx_buffer *rx_buffer_info; 580 int i = 0; 581 582 if (!netif_msg_hw(adapter)) 583 return; 584 585 /* Print netdevice Info */ 586 if (netdev) { 587 dev_info(&adapter->pdev->dev, "Net device Info\n"); 588 pr_info("Device Name state " 589 "trans_start\n"); 590 pr_info("%-15s %016lX %016lX\n", 591 netdev->name, 592 netdev->state, 593 dev_trans_start(netdev)); 594 } 595 596 /* Print Registers */ 597 dev_info(&adapter->pdev->dev, "Register Dump\n"); 598 pr_info(" Register Name Value\n"); 599 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl; 600 reginfo->name; reginfo++) { 601 ixgbe_regdump(hw, reginfo); 602 } 603 604 /* Print TX Ring Summary */ 605 if (!netdev || !netif_running(netdev)) 606 return; 607 608 dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); 609 pr_info(" %s %s %s %s\n", 610 "Queue [NTU] [NTC] [bi(ntc)->dma ]", 611 "leng", "ntw", "timestamp"); 612 for (n = 0; n < adapter->num_tx_queues; n++) { 613 ring = adapter->tx_ring[n]; 614 ixgbe_print_buffer(ring, n); 615 } 616 617 for (n = 0; n < adapter->num_xdp_queues; n++) { 618 ring = adapter->xdp_ring[n]; 619 ixgbe_print_buffer(ring, n); 620 } 621 622 /* Print TX Rings */ 623 if (!netif_msg_tx_done(adapter)) 624 goto rx_ring_summary; 625 626 dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); 627 628 /* Transmit Descriptor Formats 629 * 630 * 82598 Advanced Transmit Descriptor 631 * +--------------------------------------------------------------+ 632 * 0 | Buffer Address [63:0] | 633 * +--------------------------------------------------------------+ 634 * 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN | 635 * +--------------------------------------------------------------+ 636 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0 637 * 638 * 82598 Advanced Transmit Descriptor (Write-Back Format) 639 * +--------------------------------------------------------------+ 640 * 0 | RSV [63:0] | 641 * +--------------------------------------------------------------+ 642 * 8 | RSV | STA | NXTSEQ | 643 * +--------------------------------------------------------------+ 644 * 63 36 35 32 31 0 645 * 646 * 82599+ Advanced Transmit Descriptor 647 * +--------------------------------------------------------------+ 648 * 0 | Buffer Address [63:0] | 649 * +--------------------------------------------------------------+ 650 * 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN | 651 * +--------------------------------------------------------------+ 652 * 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0 653 * 654 * 82599+ Advanced Transmit Descriptor (Write-Back Format) 655 * +--------------------------------------------------------------+ 656 * 0 | RSV [63:0] | 657 * +--------------------------------------------------------------+ 658 * 8 | RSV | STA | RSV | 659 * +--------------------------------------------------------------+ 660 * 63 36 35 32 31 0 661 */ 662 663 for (n = 0; n < adapter->num_tx_queues; n++) { 664 ring = adapter->tx_ring[n]; 665 pr_info("------------------------------------\n"); 666 pr_info("TX QUEUE INDEX = %d\n", ring->queue_index); 667 pr_info("------------------------------------\n"); 668 pr_info("%s%s %s %s %s %s\n", 669 "T [desc] [address 63:0 ] ", 670 "[PlPOIdStDDt Ln] [bi->dma ] ", 671 "leng", "ntw", "timestamp", "bi->skb"); 672 673 for (i = 0; ring->desc && (i < ring->count); i++) { 674 tx_desc = IXGBE_TX_DESC(ring, i); 675 tx_buffer = &ring->tx_buffer_info[i]; 676 u0 = (struct my_u0 *)tx_desc; 677 if (dma_unmap_len(tx_buffer, len) > 0) { 678 const char *ring_desc; 679 680 if (i == ring->next_to_use && 681 i == ring->next_to_clean) 682 ring_desc = " NTC/U"; 683 else if (i == ring->next_to_use) 684 ring_desc = " NTU"; 685 else if (i == ring->next_to_clean) 686 ring_desc = " NTC"; 687 else 688 ring_desc = ""; 689 pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p%s", 690 i, 691 le64_to_cpu((__force __le64)u0->a), 692 le64_to_cpu((__force __le64)u0->b), 693 (u64)dma_unmap_addr(tx_buffer, dma), 694 dma_unmap_len(tx_buffer, len), 695 tx_buffer->next_to_watch, 696 (u64)tx_buffer->time_stamp, 697 tx_buffer->skb, 698 ring_desc); 699 700 if (netif_msg_pktdata(adapter) && 701 tx_buffer->skb) 702 print_hex_dump(KERN_INFO, "", 703 DUMP_PREFIX_ADDRESS, 16, 1, 704 tx_buffer->skb->data, 705 dma_unmap_len(tx_buffer, len), 706 true); 707 } 708 } 709 } 710 711 /* Print RX Rings Summary */ 712 rx_ring_summary: 713 dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); 714 pr_info("Queue [NTU] [NTC]\n"); 715 for (n = 0; n < adapter->num_rx_queues; n++) { 716 rx_ring = adapter->rx_ring[n]; 717 pr_info("%5d %5X %5X\n", 718 n, rx_ring->next_to_use, rx_ring->next_to_clean); 719 } 720 721 /* Print RX Rings */ 722 if (!netif_msg_rx_status(adapter)) 723 return; 724 725 dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); 726 727 /* Receive Descriptor Formats 728 * 729 * 82598 Advanced Receive Descriptor (Read) Format 730 * 63 1 0 731 * +-----------------------------------------------------+ 732 * 0 | Packet Buffer Address [63:1] |A0/NSE| 733 * +----------------------------------------------+------+ 734 * 8 | Header Buffer Address [63:1] | DD | 735 * +-----------------------------------------------------+ 736 * 737 * 738 * 82598 Advanced Receive Descriptor (Write-Back) Format 739 * 740 * 63 48 47 32 31 30 21 20 16 15 4 3 0 741 * +------------------------------------------------------+ 742 * 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS | 743 * | Packet | IP | | | | Type | Type | 744 * | Checksum | Ident | | | | | | 745 * +------------------------------------------------------+ 746 * 8 | VLAN Tag | Length | Extended Error | Extended Status | 747 * +------------------------------------------------------+ 748 * 63 48 47 32 31 20 19 0 749 * 750 * 82599+ Advanced Receive Descriptor (Read) Format 751 * 63 1 0 752 * +-----------------------------------------------------+ 753 * 0 | Packet Buffer Address [63:1] |A0/NSE| 754 * +----------------------------------------------+------+ 755 * 8 | Header Buffer Address [63:1] | DD | 756 * +-----------------------------------------------------+ 757 * 758 * 759 * 82599+ Advanced Receive Descriptor (Write-Back) Format 760 * 761 * 63 48 47 32 31 30 21 20 17 16 4 3 0 762 * +------------------------------------------------------+ 763 * 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS | 764 * |/ RTT / PCoE_PARAM | | | CNT | Type | Type | 765 * |/ Flow Dir Flt ID | | | | | | 766 * +------------------------------------------------------+ 767 * 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP | 768 * +------------------------------------------------------+ 769 * 63 48 47 32 31 20 19 0 770 */ 771 772 for (n = 0; n < adapter->num_rx_queues; n++) { 773 rx_ring = adapter->rx_ring[n]; 774 pr_info("------------------------------------\n"); 775 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index); 776 pr_info("------------------------------------\n"); 777 pr_info("%s%s%s\n", 778 "R [desc] [ PktBuf A0] ", 779 "[ HeadBuf DD] [bi->dma ] [bi->skb ] ", 780 "<-- Adv Rx Read format"); 781 pr_info("%s%s%s\n", 782 "RWB[desc] [PcsmIpSHl PtRs] ", 783 "[vl er S cks ln] ---------------- [bi->skb ] ", 784 "<-- Adv Rx Write-Back format"); 785 786 for (i = 0; i < rx_ring->count; i++) { 787 const char *ring_desc; 788 789 if (i == rx_ring->next_to_use) 790 ring_desc = " NTU"; 791 else if (i == rx_ring->next_to_clean) 792 ring_desc = " NTC"; 793 else 794 ring_desc = ""; 795 796 rx_buffer_info = &rx_ring->rx_buffer_info[i]; 797 rx_desc = IXGBE_RX_DESC(rx_ring, i); 798 u0 = (struct my_u0 *)rx_desc; 799 if (rx_desc->wb.upper.length) { 800 /* Descriptor Done */ 801 pr_info("RWB[0x%03X] %016llX %016llX ---------------- %p%s\n", 802 i, 803 le64_to_cpu((__force __le64)u0->a), 804 le64_to_cpu((__force __le64)u0->b), 805 rx_buffer_info->skb, 806 ring_desc); 807 } else { 808 pr_info("R [0x%03X] %016llX %016llX %016llX %p%s\n", 809 i, 810 le64_to_cpu((__force __le64)u0->a), 811 le64_to_cpu((__force __le64)u0->b), 812 (u64)rx_buffer_info->dma, 813 rx_buffer_info->skb, 814 ring_desc); 815 816 if (netif_msg_pktdata(adapter) && 817 rx_buffer_info->dma) { 818 print_hex_dump(KERN_INFO, "", 819 DUMP_PREFIX_ADDRESS, 16, 1, 820 page_address(rx_buffer_info->page) + 821 rx_buffer_info->page_offset, 822 ixgbe_rx_bufsz(rx_ring), true); 823 } 824 } 825 } 826 } 827 } 828 829 static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) 830 { 831 u32 ctrl_ext; 832 833 /* Let firmware take over control of h/w */ 834 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); 835 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, 836 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); 837 } 838 839 static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) 840 { 841 u32 ctrl_ext; 842 843 /* Let firmware know the driver has taken over */ 844 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); 845 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, 846 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); 847 } 848 849 /** 850 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors 851 * @adapter: pointer to adapter struct 852 * @direction: 0 for Rx, 1 for Tx, -1 for other causes 853 * @queue: queue to map the corresponding interrupt to 854 * @msix_vector: the vector to map to the corresponding queue 855 * 856 */ 857 static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction, 858 u8 queue, u8 msix_vector) 859 { 860 u32 ivar, index; 861 struct ixgbe_hw *hw = &adapter->hw; 862 switch (hw->mac.type) { 863 case ixgbe_mac_82598EB: 864 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 865 if (direction == -1) 866 direction = 0; 867 index = (((direction * 64) + queue) >> 2) & 0x1F; 868 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index)); 869 ivar &= ~(0xFF << (8 * (queue & 0x3))); 870 ivar |= (msix_vector << (8 * (queue & 0x3))); 871 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar); 872 break; 873 case ixgbe_mac_82599EB: 874 case ixgbe_mac_X540: 875 case ixgbe_mac_X550: 876 case ixgbe_mac_X550EM_x: 877 case ixgbe_mac_x550em_a: 878 if (direction == -1) { 879 /* other causes */ 880 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 881 index = ((queue & 1) * 8); 882 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC); 883 ivar &= ~(0xFF << index); 884 ivar |= (msix_vector << index); 885 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar); 886 break; 887 } else { 888 /* tx or rx causes */ 889 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 890 index = ((16 * (queue & 1)) + (8 * direction)); 891 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1)); 892 ivar &= ~(0xFF << index); 893 ivar |= (msix_vector << index); 894 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar); 895 break; 896 } 897 default: 898 break; 899 } 900 } 901 902 void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter, 903 u64 qmask) 904 { 905 u32 mask; 906 907 switch (adapter->hw.mac.type) { 908 case ixgbe_mac_82598EB: 909 mask = (IXGBE_EIMS_RTX_QUEUE & qmask); 910 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask); 911 break; 912 case ixgbe_mac_82599EB: 913 case ixgbe_mac_X540: 914 case ixgbe_mac_X550: 915 case ixgbe_mac_X550EM_x: 916 case ixgbe_mac_x550em_a: 917 mask = (qmask & 0xFFFFFFFF); 918 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask); 919 mask = (qmask >> 32); 920 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask); 921 break; 922 default: 923 break; 924 } 925 } 926 927 static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter *adapter) 928 { 929 struct ixgbe_hw *hw = &adapter->hw; 930 struct ixgbe_hw_stats *hwstats = &adapter->stats; 931 int i; 932 u32 data; 933 934 if ((hw->fc.current_mode != ixgbe_fc_full) && 935 (hw->fc.current_mode != ixgbe_fc_rx_pause)) 936 return; 937 938 switch (hw->mac.type) { 939 case ixgbe_mac_82598EB: 940 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); 941 break; 942 default: 943 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); 944 } 945 hwstats->lxoffrxc += data; 946 947 /* refill credits (no tx hang) if we received xoff */ 948 if (!data) 949 return; 950 951 for (i = 0; i < adapter->num_tx_queues; i++) 952 clear_bit(__IXGBE_HANG_CHECK_ARMED, 953 &adapter->tx_ring[i]->state); 954 955 for (i = 0; i < adapter->num_xdp_queues; i++) 956 clear_bit(__IXGBE_HANG_CHECK_ARMED, 957 &adapter->xdp_ring[i]->state); 958 } 959 960 static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter) 961 { 962 struct ixgbe_hw *hw = &adapter->hw; 963 struct ixgbe_hw_stats *hwstats = &adapter->stats; 964 u32 xoff[8] = {0}; 965 u8 tc; 966 int i; 967 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 968 969 if (adapter->ixgbe_ieee_pfc) 970 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 971 972 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED) || !pfc_en) { 973 ixgbe_update_xoff_rx_lfc(adapter); 974 return; 975 } 976 977 /* update stats for each tc, only valid with PFC enabled */ 978 for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) { 979 u32 pxoffrxc; 980 981 switch (hw->mac.type) { 982 case ixgbe_mac_82598EB: 983 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); 984 break; 985 default: 986 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i)); 987 } 988 hwstats->pxoffrxc[i] += pxoffrxc; 989 /* Get the TC for given UP */ 990 tc = netdev_get_prio_tc_map(adapter->netdev, i); 991 xoff[tc] += pxoffrxc; 992 } 993 994 /* disarm tx queues that have received xoff frames */ 995 for (i = 0; i < adapter->num_tx_queues; i++) { 996 struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; 997 998 tc = tx_ring->dcb_tc; 999 if (xoff[tc]) 1000 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); 1001 } 1002 1003 for (i = 0; i < adapter->num_xdp_queues; i++) { 1004 struct ixgbe_ring *xdp_ring = adapter->xdp_ring[i]; 1005 1006 tc = xdp_ring->dcb_tc; 1007 if (xoff[tc]) 1008 clear_bit(__IXGBE_HANG_CHECK_ARMED, &xdp_ring->state); 1009 } 1010 } 1011 1012 static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring) 1013 { 1014 return ring->stats.packets; 1015 } 1016 1017 static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring) 1018 { 1019 unsigned int head, tail; 1020 1021 head = ring->next_to_clean; 1022 tail = ring->next_to_use; 1023 1024 return ((head <= tail) ? tail : tail + ring->count) - head; 1025 } 1026 1027 static inline bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring) 1028 { 1029 u32 tx_done = ixgbe_get_tx_completed(tx_ring); 1030 u32 tx_done_old = tx_ring->tx_stats.tx_done_old; 1031 u32 tx_pending = ixgbe_get_tx_pending(tx_ring); 1032 1033 clear_check_for_tx_hang(tx_ring); 1034 1035 /* 1036 * Check for a hung queue, but be thorough. This verifies 1037 * that a transmit has been completed since the previous 1038 * check AND there is at least one packet pending. The 1039 * ARMED bit is set to indicate a potential hang. The 1040 * bit is cleared if a pause frame is received to remove 1041 * false hang detection due to PFC or 802.3x frames. By 1042 * requiring this to fail twice we avoid races with 1043 * pfc clearing the ARMED bit and conditions where we 1044 * run the check_tx_hang logic with a transmit completion 1045 * pending but without time to complete it yet. 1046 */ 1047 if (tx_done_old == tx_done && tx_pending) 1048 /* make sure it is true for two checks in a row */ 1049 return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED, 1050 &tx_ring->state); 1051 /* update completed stats and continue */ 1052 tx_ring->tx_stats.tx_done_old = tx_done; 1053 /* reset the countdown */ 1054 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); 1055 1056 return false; 1057 } 1058 1059 /** 1060 * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout 1061 * @adapter: driver private struct 1062 **/ 1063 static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter) 1064 { 1065 1066 /* Do the reset outside of interrupt context */ 1067 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 1068 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 1069 e_warn(drv, "initiating reset due to tx timeout\n"); 1070 ixgbe_service_event_schedule(adapter); 1071 } 1072 } 1073 1074 /** 1075 * ixgbe_tx_maxrate - callback to set the maximum per-queue bitrate 1076 * @netdev: network interface device structure 1077 * @queue_index: Tx queue to set 1078 * @maxrate: desired maximum transmit bitrate 1079 **/ 1080 static int ixgbe_tx_maxrate(struct net_device *netdev, 1081 int queue_index, u32 maxrate) 1082 { 1083 struct ixgbe_adapter *adapter = netdev_priv(netdev); 1084 struct ixgbe_hw *hw = &adapter->hw; 1085 u32 bcnrc_val = ixgbe_link_mbps(adapter); 1086 1087 if (!maxrate) 1088 return 0; 1089 1090 /* Calculate the rate factor values to set */ 1091 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1092 bcnrc_val /= maxrate; 1093 1094 /* clear everything but the rate factor */ 1095 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1096 IXGBE_RTTBCNRC_RF_DEC_MASK; 1097 1098 /* enable the rate scheduler */ 1099 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1100 1101 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, queue_index); 1102 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1103 1104 return 0; 1105 } 1106 1107 /** 1108 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes 1109 * @q_vector: structure containing interrupt and ring information 1110 * @tx_ring: tx ring to clean 1111 * @napi_budget: Used to determine if we are in netpoll 1112 **/ 1113 static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector, 1114 struct ixgbe_ring *tx_ring, int napi_budget) 1115 { 1116 struct ixgbe_adapter *adapter = q_vector->adapter; 1117 struct ixgbe_tx_buffer *tx_buffer; 1118 union ixgbe_adv_tx_desc *tx_desc; 1119 unsigned int total_bytes = 0, total_packets = 0, total_ipsec = 0; 1120 unsigned int budget = q_vector->tx.work_limit; 1121 unsigned int i = tx_ring->next_to_clean; 1122 1123 if (test_bit(__IXGBE_DOWN, &adapter->state)) 1124 return true; 1125 1126 tx_buffer = &tx_ring->tx_buffer_info[i]; 1127 tx_desc = IXGBE_TX_DESC(tx_ring, i); 1128 i -= tx_ring->count; 1129 1130 do { 1131 union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; 1132 1133 /* if next_to_watch is not set then there is no work pending */ 1134 if (!eop_desc) 1135 break; 1136 1137 /* prevent any other reads prior to eop_desc */ 1138 smp_rmb(); 1139 1140 /* if DD is not set pending work has not been completed */ 1141 if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD))) 1142 break; 1143 1144 /* clear next_to_watch to prevent false hangs */ 1145 tx_buffer->next_to_watch = NULL; 1146 1147 /* update the statistics for this packet */ 1148 total_bytes += tx_buffer->bytecount; 1149 total_packets += tx_buffer->gso_segs; 1150 if (tx_buffer->tx_flags & IXGBE_TX_FLAGS_IPSEC) 1151 total_ipsec++; 1152 1153 /* free the skb */ 1154 if (ring_is_xdp(tx_ring)) 1155 xdp_return_frame(tx_buffer->xdpf); 1156 else 1157 napi_consume_skb(tx_buffer->skb, napi_budget); 1158 1159 /* unmap skb header data */ 1160 dma_unmap_single(tx_ring->dev, 1161 dma_unmap_addr(tx_buffer, dma), 1162 dma_unmap_len(tx_buffer, len), 1163 DMA_TO_DEVICE); 1164 1165 /* clear tx_buffer data */ 1166 dma_unmap_len_set(tx_buffer, len, 0); 1167 1168 /* unmap remaining buffers */ 1169 while (tx_desc != eop_desc) { 1170 tx_buffer++; 1171 tx_desc++; 1172 i++; 1173 if (unlikely(!i)) { 1174 i -= tx_ring->count; 1175 tx_buffer = tx_ring->tx_buffer_info; 1176 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 1177 } 1178 1179 /* unmap any remaining paged data */ 1180 if (dma_unmap_len(tx_buffer, len)) { 1181 dma_unmap_page(tx_ring->dev, 1182 dma_unmap_addr(tx_buffer, dma), 1183 dma_unmap_len(tx_buffer, len), 1184 DMA_TO_DEVICE); 1185 dma_unmap_len_set(tx_buffer, len, 0); 1186 } 1187 } 1188 1189 /* move us one more past the eop_desc for start of next pkt */ 1190 tx_buffer++; 1191 tx_desc++; 1192 i++; 1193 if (unlikely(!i)) { 1194 i -= tx_ring->count; 1195 tx_buffer = tx_ring->tx_buffer_info; 1196 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 1197 } 1198 1199 /* issue prefetch for next Tx descriptor */ 1200 prefetch(tx_desc); 1201 1202 /* update budget accounting */ 1203 budget--; 1204 } while (likely(budget)); 1205 1206 i += tx_ring->count; 1207 tx_ring->next_to_clean = i; 1208 u64_stats_update_begin(&tx_ring->syncp); 1209 tx_ring->stats.bytes += total_bytes; 1210 tx_ring->stats.packets += total_packets; 1211 u64_stats_update_end(&tx_ring->syncp); 1212 q_vector->tx.total_bytes += total_bytes; 1213 q_vector->tx.total_packets += total_packets; 1214 adapter->tx_ipsec += total_ipsec; 1215 1216 if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) { 1217 /* schedule immediate reset if we believe we hung */ 1218 struct ixgbe_hw *hw = &adapter->hw; 1219 e_err(drv, "Detected Tx Unit Hang %s\n" 1220 " Tx Queue <%d>\n" 1221 " TDH, TDT <%x>, <%x>\n" 1222 " next_to_use <%x>\n" 1223 " next_to_clean <%x>\n" 1224 "tx_buffer_info[next_to_clean]\n" 1225 " time_stamp <%lx>\n" 1226 " jiffies <%lx>\n", 1227 ring_is_xdp(tx_ring) ? "(XDP)" : "", 1228 tx_ring->queue_index, 1229 IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)), 1230 IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)), 1231 tx_ring->next_to_use, i, 1232 tx_ring->tx_buffer_info[i].time_stamp, jiffies); 1233 1234 if (!ring_is_xdp(tx_ring)) 1235 netif_stop_subqueue(tx_ring->netdev, 1236 tx_ring->queue_index); 1237 1238 e_info(probe, 1239 "tx hang %d detected on queue %d, resetting adapter\n", 1240 adapter->tx_timeout_count + 1, tx_ring->queue_index); 1241 1242 /* schedule immediate reset if we believe we hung */ 1243 ixgbe_tx_timeout_reset(adapter); 1244 1245 /* the adapter is about to reset, no point in enabling stuff */ 1246 return true; 1247 } 1248 1249 if (ring_is_xdp(tx_ring)) 1250 return !!budget; 1251 1252 netdev_tx_completed_queue(txring_txq(tx_ring), 1253 total_packets, total_bytes); 1254 1255 #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) 1256 if (unlikely(total_packets && netif_carrier_ok(tx_ring->netdev) && 1257 (ixgbe_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) { 1258 /* Make sure that anybody stopping the queue after this 1259 * sees the new next_to_clean. 1260 */ 1261 smp_mb(); 1262 if (__netif_subqueue_stopped(tx_ring->netdev, 1263 tx_ring->queue_index) 1264 && !test_bit(__IXGBE_DOWN, &adapter->state)) { 1265 netif_wake_subqueue(tx_ring->netdev, 1266 tx_ring->queue_index); 1267 ++tx_ring->tx_stats.restart_queue; 1268 } 1269 } 1270 1271 return !!budget; 1272 } 1273 1274 #ifdef CONFIG_IXGBE_DCA 1275 static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, 1276 struct ixgbe_ring *tx_ring, 1277 int cpu) 1278 { 1279 struct ixgbe_hw *hw = &adapter->hw; 1280 u32 txctrl = 0; 1281 u16 reg_offset; 1282 1283 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1284 txctrl = dca3_get_tag(tx_ring->dev, cpu); 1285 1286 switch (hw->mac.type) { 1287 case ixgbe_mac_82598EB: 1288 reg_offset = IXGBE_DCA_TXCTRL(tx_ring->reg_idx); 1289 break; 1290 case ixgbe_mac_82599EB: 1291 case ixgbe_mac_X540: 1292 reg_offset = IXGBE_DCA_TXCTRL_82599(tx_ring->reg_idx); 1293 txctrl <<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599; 1294 break; 1295 default: 1296 /* for unknown hardware do not write register */ 1297 return; 1298 } 1299 1300 /* 1301 * We can enable relaxed ordering for reads, but not writes when 1302 * DCA is enabled. This is due to a known issue in some chipsets 1303 * which will cause the DCA tag to be cleared. 1304 */ 1305 txctrl |= IXGBE_DCA_TXCTRL_DESC_RRO_EN | 1306 IXGBE_DCA_TXCTRL_DATA_RRO_EN | 1307 IXGBE_DCA_TXCTRL_DESC_DCA_EN; 1308 1309 IXGBE_WRITE_REG(hw, reg_offset, txctrl); 1310 } 1311 1312 static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter, 1313 struct ixgbe_ring *rx_ring, 1314 int cpu) 1315 { 1316 struct ixgbe_hw *hw = &adapter->hw; 1317 u32 rxctrl = 0; 1318 u8 reg_idx = rx_ring->reg_idx; 1319 1320 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1321 rxctrl = dca3_get_tag(rx_ring->dev, cpu); 1322 1323 switch (hw->mac.type) { 1324 case ixgbe_mac_82599EB: 1325 case ixgbe_mac_X540: 1326 rxctrl <<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599; 1327 break; 1328 default: 1329 break; 1330 } 1331 1332 /* 1333 * We can enable relaxed ordering for reads, but not writes when 1334 * DCA is enabled. This is due to a known issue in some chipsets 1335 * which will cause the DCA tag to be cleared. 1336 */ 1337 rxctrl |= IXGBE_DCA_RXCTRL_DESC_RRO_EN | 1338 IXGBE_DCA_RXCTRL_DATA_DCA_EN | 1339 IXGBE_DCA_RXCTRL_DESC_DCA_EN; 1340 1341 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl); 1342 } 1343 1344 static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector) 1345 { 1346 struct ixgbe_adapter *adapter = q_vector->adapter; 1347 struct ixgbe_ring *ring; 1348 int cpu = get_cpu(); 1349 1350 if (q_vector->cpu == cpu) 1351 goto out_no_update; 1352 1353 ixgbe_for_each_ring(ring, q_vector->tx) 1354 ixgbe_update_tx_dca(adapter, ring, cpu); 1355 1356 ixgbe_for_each_ring(ring, q_vector->rx) 1357 ixgbe_update_rx_dca(adapter, ring, cpu); 1358 1359 q_vector->cpu = cpu; 1360 out_no_update: 1361 put_cpu(); 1362 } 1363 1364 static void ixgbe_setup_dca(struct ixgbe_adapter *adapter) 1365 { 1366 int i; 1367 1368 /* always use CB2 mode, difference is masked in the CB driver */ 1369 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1370 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1371 IXGBE_DCA_CTRL_DCA_MODE_CB2); 1372 else 1373 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1374 IXGBE_DCA_CTRL_DCA_DISABLE); 1375 1376 for (i = 0; i < adapter->num_q_vectors; i++) { 1377 adapter->q_vector[i]->cpu = -1; 1378 ixgbe_update_dca(adapter->q_vector[i]); 1379 } 1380 } 1381 1382 static int __ixgbe_notify_dca(struct device *dev, void *data) 1383 { 1384 struct ixgbe_adapter *adapter = dev_get_drvdata(dev); 1385 unsigned long event = *(unsigned long *)data; 1386 1387 if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE)) 1388 return 0; 1389 1390 switch (event) { 1391 case DCA_PROVIDER_ADD: 1392 /* if we're already enabled, don't do it again */ 1393 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1394 break; 1395 if (dca_add_requester(dev) == 0) { 1396 adapter->flags |= IXGBE_FLAG_DCA_ENABLED; 1397 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1398 IXGBE_DCA_CTRL_DCA_MODE_CB2); 1399 break; 1400 } 1401 fallthrough; /* DCA is disabled. */ 1402 case DCA_PROVIDER_REMOVE: 1403 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { 1404 dca_remove_requester(dev); 1405 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; 1406 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1407 IXGBE_DCA_CTRL_DCA_DISABLE); 1408 } 1409 break; 1410 } 1411 1412 return 0; 1413 } 1414 1415 #endif /* CONFIG_IXGBE_DCA */ 1416 1417 #define IXGBE_RSS_L4_TYPES_MASK \ 1418 ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \ 1419 (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \ 1420 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \ 1421 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP)) 1422 1423 static inline void ixgbe_rx_hash(struct ixgbe_ring *ring, 1424 union ixgbe_adv_rx_desc *rx_desc, 1425 struct sk_buff *skb) 1426 { 1427 u16 rss_type; 1428 1429 if (!(ring->netdev->features & NETIF_F_RXHASH)) 1430 return; 1431 1432 rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) & 1433 IXGBE_RXDADV_RSSTYPE_MASK; 1434 1435 if (!rss_type) 1436 return; 1437 1438 skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), 1439 (IXGBE_RSS_L4_TYPES_MASK & (1ul << rss_type)) ? 1440 PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3); 1441 } 1442 1443 #ifdef IXGBE_FCOE 1444 /** 1445 * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type 1446 * @ring: structure containing ring specific data 1447 * @rx_desc: advanced rx descriptor 1448 * 1449 * Returns : true if it is FCoE pkt 1450 */ 1451 static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring *ring, 1452 union ixgbe_adv_rx_desc *rx_desc) 1453 { 1454 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; 1455 1456 return test_bit(__IXGBE_RX_FCOE, &ring->state) && 1457 ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) == 1458 (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE << 1459 IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT))); 1460 } 1461 1462 #endif /* IXGBE_FCOE */ 1463 /** 1464 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum 1465 * @ring: structure containing ring specific data 1466 * @rx_desc: current Rx descriptor being processed 1467 * @skb: skb currently being received and modified 1468 **/ 1469 static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring, 1470 union ixgbe_adv_rx_desc *rx_desc, 1471 struct sk_buff *skb) 1472 { 1473 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; 1474 bool encap_pkt = false; 1475 1476 skb_checksum_none_assert(skb); 1477 1478 /* Rx csum disabled */ 1479 if (!(ring->netdev->features & NETIF_F_RXCSUM)) 1480 return; 1481 1482 /* check for VXLAN and Geneve packets */ 1483 if (pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN)) { 1484 encap_pkt = true; 1485 skb->encapsulation = 1; 1486 } 1487 1488 /* if IP and error */ 1489 if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) && 1490 ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) { 1491 ring->rx_stats.csum_err++; 1492 return; 1493 } 1494 1495 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS)) 1496 return; 1497 1498 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) { 1499 /* 1500 * 82599 errata, UDP frames with a 0 checksum can be marked as 1501 * checksum errors. 1502 */ 1503 if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP)) && 1504 test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state)) 1505 return; 1506 1507 ring->rx_stats.csum_err++; 1508 return; 1509 } 1510 1511 /* It must be a TCP or UDP packet with a valid checksum */ 1512 skb->ip_summed = CHECKSUM_UNNECESSARY; 1513 if (encap_pkt) { 1514 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_OUTERIPCS)) 1515 return; 1516 1517 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_OUTERIPER)) { 1518 skb->ip_summed = CHECKSUM_NONE; 1519 return; 1520 } 1521 /* If we checked the outer header let the stack know */ 1522 skb->csum_level = 1; 1523 } 1524 } 1525 1526 static unsigned int ixgbe_rx_offset(struct ixgbe_ring *rx_ring) 1527 { 1528 return ring_uses_build_skb(rx_ring) ? IXGBE_SKB_PAD : 0; 1529 } 1530 1531 static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring, 1532 struct ixgbe_rx_buffer *bi) 1533 { 1534 struct page *page = bi->page; 1535 dma_addr_t dma; 1536 1537 /* since we are recycling buffers we should seldom need to alloc */ 1538 if (likely(page)) 1539 return true; 1540 1541 /* alloc new page for storage */ 1542 page = dev_alloc_pages(ixgbe_rx_pg_order(rx_ring)); 1543 if (unlikely(!page)) { 1544 rx_ring->rx_stats.alloc_rx_page_failed++; 1545 return false; 1546 } 1547 1548 /* map page for use */ 1549 dma = dma_map_page_attrs(rx_ring->dev, page, 0, 1550 ixgbe_rx_pg_size(rx_ring), 1551 DMA_FROM_DEVICE, 1552 IXGBE_RX_DMA_ATTR); 1553 1554 /* 1555 * if mapping failed free memory back to system since 1556 * there isn't much point in holding memory we can't use 1557 */ 1558 if (dma_mapping_error(rx_ring->dev, dma)) { 1559 __free_pages(page, ixgbe_rx_pg_order(rx_ring)); 1560 1561 rx_ring->rx_stats.alloc_rx_page_failed++; 1562 return false; 1563 } 1564 1565 bi->dma = dma; 1566 bi->page = page; 1567 bi->page_offset = rx_ring->rx_offset; 1568 page_ref_add(page, USHRT_MAX - 1); 1569 bi->pagecnt_bias = USHRT_MAX; 1570 rx_ring->rx_stats.alloc_rx_page++; 1571 1572 return true; 1573 } 1574 1575 /** 1576 * ixgbe_alloc_rx_buffers - Replace used receive buffers 1577 * @rx_ring: ring to place buffers on 1578 * @cleaned_count: number of buffers to replace 1579 **/ 1580 void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count) 1581 { 1582 union ixgbe_adv_rx_desc *rx_desc; 1583 struct ixgbe_rx_buffer *bi; 1584 u16 i = rx_ring->next_to_use; 1585 u16 bufsz; 1586 1587 /* nothing to do */ 1588 if (!cleaned_count) 1589 return; 1590 1591 rx_desc = IXGBE_RX_DESC(rx_ring, i); 1592 bi = &rx_ring->rx_buffer_info[i]; 1593 i -= rx_ring->count; 1594 1595 bufsz = ixgbe_rx_bufsz(rx_ring); 1596 1597 do { 1598 if (!ixgbe_alloc_mapped_page(rx_ring, bi)) 1599 break; 1600 1601 /* sync the buffer for use by the device */ 1602 dma_sync_single_range_for_device(rx_ring->dev, bi->dma, 1603 bi->page_offset, bufsz, 1604 DMA_FROM_DEVICE); 1605 1606 /* 1607 * Refresh the desc even if buffer_addrs didn't change 1608 * because each write-back erases this info. 1609 */ 1610 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); 1611 1612 rx_desc++; 1613 bi++; 1614 i++; 1615 if (unlikely(!i)) { 1616 rx_desc = IXGBE_RX_DESC(rx_ring, 0); 1617 bi = rx_ring->rx_buffer_info; 1618 i -= rx_ring->count; 1619 } 1620 1621 /* clear the length for the next_to_use descriptor */ 1622 rx_desc->wb.upper.length = 0; 1623 1624 cleaned_count--; 1625 } while (cleaned_count); 1626 1627 i += rx_ring->count; 1628 1629 if (rx_ring->next_to_use != i) { 1630 rx_ring->next_to_use = i; 1631 1632 /* update next to alloc since we have filled the ring */ 1633 rx_ring->next_to_alloc = i; 1634 1635 /* Force memory writes to complete before letting h/w 1636 * know there are new descriptors to fetch. (Only 1637 * applicable for weak-ordered memory model archs, 1638 * such as IA-64). 1639 */ 1640 wmb(); 1641 writel(i, rx_ring->tail); 1642 } 1643 } 1644 1645 static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring, 1646 struct sk_buff *skb) 1647 { 1648 u16 hdr_len = skb_headlen(skb); 1649 1650 /* set gso_size to avoid messing up TCP MSS */ 1651 skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len), 1652 IXGBE_CB(skb)->append_cnt); 1653 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; 1654 } 1655 1656 static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring, 1657 struct sk_buff *skb) 1658 { 1659 /* if append_cnt is 0 then frame is not RSC */ 1660 if (!IXGBE_CB(skb)->append_cnt) 1661 return; 1662 1663 rx_ring->rx_stats.rsc_count += IXGBE_CB(skb)->append_cnt; 1664 rx_ring->rx_stats.rsc_flush++; 1665 1666 ixgbe_set_rsc_gso_size(rx_ring, skb); 1667 1668 /* gso_size is computed using append_cnt so always clear it last */ 1669 IXGBE_CB(skb)->append_cnt = 0; 1670 } 1671 1672 /** 1673 * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor 1674 * @rx_ring: rx descriptor ring packet is being transacted on 1675 * @rx_desc: pointer to the EOP Rx descriptor 1676 * @skb: pointer to current skb being populated 1677 * 1678 * This function checks the ring, descriptor, and packet information in 1679 * order to populate the hash, checksum, VLAN, timestamp, protocol, and 1680 * other fields within the skb. 1681 **/ 1682 void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring, 1683 union ixgbe_adv_rx_desc *rx_desc, 1684 struct sk_buff *skb) 1685 { 1686 struct net_device *dev = rx_ring->netdev; 1687 u32 flags = rx_ring->q_vector->adapter->flags; 1688 1689 ixgbe_update_rsc_stats(rx_ring, skb); 1690 1691 ixgbe_rx_hash(rx_ring, rx_desc, skb); 1692 1693 ixgbe_rx_checksum(rx_ring, rx_desc, skb); 1694 1695 if (unlikely(flags & IXGBE_FLAG_RX_HWTSTAMP_ENABLED)) 1696 ixgbe_ptp_rx_hwtstamp(rx_ring, rx_desc, skb); 1697 1698 if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && 1699 ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) { 1700 u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan); 1701 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); 1702 } 1703 1704 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_STAT_SECP)) 1705 ixgbe_ipsec_rx(rx_ring, rx_desc, skb); 1706 1707 /* record Rx queue, or update MACVLAN statistics */ 1708 if (netif_is_ixgbe(dev)) 1709 skb_record_rx_queue(skb, rx_ring->queue_index); 1710 else 1711 macvlan_count_rx(netdev_priv(dev), skb->len + ETH_HLEN, true, 1712 false); 1713 1714 skb->protocol = eth_type_trans(skb, dev); 1715 } 1716 1717 void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector, 1718 struct sk_buff *skb) 1719 { 1720 napi_gro_receive(&q_vector->napi, skb); 1721 } 1722 1723 /** 1724 * ixgbe_is_non_eop - process handling of non-EOP buffers 1725 * @rx_ring: Rx ring being processed 1726 * @rx_desc: Rx descriptor for current buffer 1727 * @skb: Current socket buffer containing buffer in progress 1728 * 1729 * This function updates next to clean. If the buffer is an EOP buffer 1730 * this function exits returning false, otherwise it will place the 1731 * sk_buff in the next buffer to be chained and return true indicating 1732 * that this is in fact a non-EOP buffer. 1733 **/ 1734 static bool ixgbe_is_non_eop(struct ixgbe_ring *rx_ring, 1735 union ixgbe_adv_rx_desc *rx_desc, 1736 struct sk_buff *skb) 1737 { 1738 u32 ntc = rx_ring->next_to_clean + 1; 1739 1740 /* fetch, update, and store next to clean */ 1741 ntc = (ntc < rx_ring->count) ? ntc : 0; 1742 rx_ring->next_to_clean = ntc; 1743 1744 prefetch(IXGBE_RX_DESC(rx_ring, ntc)); 1745 1746 /* update RSC append count if present */ 1747 if (ring_is_rsc_enabled(rx_ring)) { 1748 __le32 rsc_enabled = rx_desc->wb.lower.lo_dword.data & 1749 cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK); 1750 1751 if (unlikely(rsc_enabled)) { 1752 u32 rsc_cnt = le32_to_cpu(rsc_enabled); 1753 1754 rsc_cnt >>= IXGBE_RXDADV_RSCCNT_SHIFT; 1755 IXGBE_CB(skb)->append_cnt += rsc_cnt - 1; 1756 1757 /* update ntc based on RSC value */ 1758 ntc = le32_to_cpu(rx_desc->wb.upper.status_error); 1759 ntc &= IXGBE_RXDADV_NEXTP_MASK; 1760 ntc >>= IXGBE_RXDADV_NEXTP_SHIFT; 1761 } 1762 } 1763 1764 /* if we are the last buffer then there is nothing else to do */ 1765 if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))) 1766 return false; 1767 1768 /* place skb in next buffer to be received */ 1769 rx_ring->rx_buffer_info[ntc].skb = skb; 1770 rx_ring->rx_stats.non_eop_descs++; 1771 1772 return true; 1773 } 1774 1775 /** 1776 * ixgbe_pull_tail - ixgbe specific version of skb_pull_tail 1777 * @rx_ring: rx descriptor ring packet is being transacted on 1778 * @skb: pointer to current skb being adjusted 1779 * 1780 * This function is an ixgbe specific version of __pskb_pull_tail. The 1781 * main difference between this version and the original function is that 1782 * this function can make several assumptions about the state of things 1783 * that allow for significant optimizations versus the standard function. 1784 * As a result we can do things like drop a frag and maintain an accurate 1785 * truesize for the skb. 1786 */ 1787 static void ixgbe_pull_tail(struct ixgbe_ring *rx_ring, 1788 struct sk_buff *skb) 1789 { 1790 skb_frag_t *frag = &skb_shinfo(skb)->frags[0]; 1791 unsigned char *va; 1792 unsigned int pull_len; 1793 1794 /* 1795 * it is valid to use page_address instead of kmap since we are 1796 * working with pages allocated out of the lomem pool per 1797 * alloc_page(GFP_ATOMIC) 1798 */ 1799 va = skb_frag_address(frag); 1800 1801 /* 1802 * we need the header to contain the greater of either ETH_HLEN or 1803 * 60 bytes if the skb->len is less than 60 for skb_pad. 1804 */ 1805 pull_len = eth_get_headlen(skb->dev, va, IXGBE_RX_HDR_SIZE); 1806 1807 /* align pull length to size of long to optimize memcpy performance */ 1808 skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long))); 1809 1810 /* update all of the pointers */ 1811 skb_frag_size_sub(frag, pull_len); 1812 skb_frag_off_add(frag, pull_len); 1813 skb->data_len -= pull_len; 1814 skb->tail += pull_len; 1815 } 1816 1817 /** 1818 * ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB 1819 * @rx_ring: rx descriptor ring packet is being transacted on 1820 * @skb: pointer to current skb being updated 1821 * 1822 * This function provides a basic DMA sync up for the first fragment of an 1823 * skb. The reason for doing this is that the first fragment cannot be 1824 * unmapped until we have reached the end of packet descriptor for a buffer 1825 * chain. 1826 */ 1827 static void ixgbe_dma_sync_frag(struct ixgbe_ring *rx_ring, 1828 struct sk_buff *skb) 1829 { 1830 if (ring_uses_build_skb(rx_ring)) { 1831 unsigned long mask = (unsigned long)ixgbe_rx_pg_size(rx_ring) - 1; 1832 unsigned long offset = (unsigned long)(skb->data) & mask; 1833 1834 dma_sync_single_range_for_cpu(rx_ring->dev, 1835 IXGBE_CB(skb)->dma, 1836 offset, 1837 skb_headlen(skb), 1838 DMA_FROM_DEVICE); 1839 } else { 1840 skb_frag_t *frag = &skb_shinfo(skb)->frags[0]; 1841 1842 dma_sync_single_range_for_cpu(rx_ring->dev, 1843 IXGBE_CB(skb)->dma, 1844 skb_frag_off(frag), 1845 skb_frag_size(frag), 1846 DMA_FROM_DEVICE); 1847 } 1848 1849 /* If the page was released, just unmap it. */ 1850 if (unlikely(IXGBE_CB(skb)->page_released)) { 1851 dma_unmap_page_attrs(rx_ring->dev, IXGBE_CB(skb)->dma, 1852 ixgbe_rx_pg_size(rx_ring), 1853 DMA_FROM_DEVICE, 1854 IXGBE_RX_DMA_ATTR); 1855 } 1856 } 1857 1858 /** 1859 * ixgbe_cleanup_headers - Correct corrupted or empty headers 1860 * @rx_ring: rx descriptor ring packet is being transacted on 1861 * @rx_desc: pointer to the EOP Rx descriptor 1862 * @skb: pointer to current skb being fixed 1863 * 1864 * Check if the skb is valid in the XDP case it will be an error pointer. 1865 * Return true in this case to abort processing and advance to next 1866 * descriptor. 1867 * 1868 * Check for corrupted packet headers caused by senders on the local L2 1869 * embedded NIC switch not setting up their Tx Descriptors right. These 1870 * should be very rare. 1871 * 1872 * Also address the case where we are pulling data in on pages only 1873 * and as such no data is present in the skb header. 1874 * 1875 * In addition if skb is not at least 60 bytes we need to pad it so that 1876 * it is large enough to qualify as a valid Ethernet frame. 1877 * 1878 * Returns true if an error was encountered and skb was freed. 1879 **/ 1880 bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring, 1881 union ixgbe_adv_rx_desc *rx_desc, 1882 struct sk_buff *skb) 1883 { 1884 struct net_device *netdev = rx_ring->netdev; 1885 1886 /* XDP packets use error pointer so abort at this point */ 1887 if (IS_ERR(skb)) 1888 return true; 1889 1890 /* Verify netdev is present, and that packet does not have any 1891 * errors that would be unacceptable to the netdev. 1892 */ 1893 if (!netdev || 1894 (unlikely(ixgbe_test_staterr(rx_desc, 1895 IXGBE_RXDADV_ERR_FRAME_ERR_MASK) && 1896 !(netdev->features & NETIF_F_RXALL)))) { 1897 dev_kfree_skb_any(skb); 1898 return true; 1899 } 1900 1901 /* place header in linear portion of buffer */ 1902 if (!skb_headlen(skb)) 1903 ixgbe_pull_tail(rx_ring, skb); 1904 1905 #ifdef IXGBE_FCOE 1906 /* do not attempt to pad FCoE Frames as this will disrupt DDP */ 1907 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) 1908 return false; 1909 1910 #endif 1911 /* if eth_skb_pad returns an error the skb was freed */ 1912 if (eth_skb_pad(skb)) 1913 return true; 1914 1915 return false; 1916 } 1917 1918 /** 1919 * ixgbe_reuse_rx_page - page flip buffer and store it back on the ring 1920 * @rx_ring: rx descriptor ring to store buffers on 1921 * @old_buff: donor buffer to have page reused 1922 * 1923 * Synchronizes page for reuse by the adapter 1924 **/ 1925 static void ixgbe_reuse_rx_page(struct ixgbe_ring *rx_ring, 1926 struct ixgbe_rx_buffer *old_buff) 1927 { 1928 struct ixgbe_rx_buffer *new_buff; 1929 u16 nta = rx_ring->next_to_alloc; 1930 1931 new_buff = &rx_ring->rx_buffer_info[nta]; 1932 1933 /* update, and store next to alloc */ 1934 nta++; 1935 rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; 1936 1937 /* Transfer page from old buffer to new buffer. 1938 * Move each member individually to avoid possible store 1939 * forwarding stalls and unnecessary copy of skb. 1940 */ 1941 new_buff->dma = old_buff->dma; 1942 new_buff->page = old_buff->page; 1943 new_buff->page_offset = old_buff->page_offset; 1944 new_buff->pagecnt_bias = old_buff->pagecnt_bias; 1945 } 1946 1947 static bool ixgbe_can_reuse_rx_page(struct ixgbe_rx_buffer *rx_buffer, 1948 int rx_buffer_pgcnt) 1949 { 1950 unsigned int pagecnt_bias = rx_buffer->pagecnt_bias; 1951 struct page *page = rx_buffer->page; 1952 1953 /* avoid re-using remote and pfmemalloc pages */ 1954 if (!dev_page_is_reusable(page)) 1955 return false; 1956 1957 #if (PAGE_SIZE < 8192) 1958 /* if we are only owner of page we can reuse it */ 1959 if (unlikely((rx_buffer_pgcnt - pagecnt_bias) > 1)) 1960 return false; 1961 #else 1962 /* The last offset is a bit aggressive in that we assume the 1963 * worst case of FCoE being enabled and using a 3K buffer. 1964 * However this should have minimal impact as the 1K extra is 1965 * still less than one buffer in size. 1966 */ 1967 #define IXGBE_LAST_OFFSET \ 1968 (SKB_WITH_OVERHEAD(PAGE_SIZE) - IXGBE_RXBUFFER_3K) 1969 if (rx_buffer->page_offset > IXGBE_LAST_OFFSET) 1970 return false; 1971 #endif 1972 1973 /* If we have drained the page fragment pool we need to update 1974 * the pagecnt_bias and page count so that we fully restock the 1975 * number of references the driver holds. 1976 */ 1977 if (unlikely(pagecnt_bias == 1)) { 1978 page_ref_add(page, USHRT_MAX - 1); 1979 rx_buffer->pagecnt_bias = USHRT_MAX; 1980 } 1981 1982 return true; 1983 } 1984 1985 /** 1986 * ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff 1987 * @rx_ring: rx descriptor ring to transact packets on 1988 * @rx_buffer: buffer containing page to add 1989 * @skb: sk_buff to place the data into 1990 * @size: size of data in rx_buffer 1991 * 1992 * This function will add the data contained in rx_buffer->page to the skb. 1993 * This is done either through a direct copy if the data in the buffer is 1994 * less than the skb header size, otherwise it will just attach the page as 1995 * a frag to the skb. 1996 * 1997 * The function will then update the page offset if necessary and return 1998 * true if the buffer can be reused by the adapter. 1999 **/ 2000 static void ixgbe_add_rx_frag(struct ixgbe_ring *rx_ring, 2001 struct ixgbe_rx_buffer *rx_buffer, 2002 struct sk_buff *skb, 2003 unsigned int size) 2004 { 2005 #if (PAGE_SIZE < 8192) 2006 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2007 #else 2008 unsigned int truesize = rx_ring->rx_offset ? 2009 SKB_DATA_ALIGN(rx_ring->rx_offset + size) : 2010 SKB_DATA_ALIGN(size); 2011 #endif 2012 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buffer->page, 2013 rx_buffer->page_offset, size, truesize); 2014 #if (PAGE_SIZE < 8192) 2015 rx_buffer->page_offset ^= truesize; 2016 #else 2017 rx_buffer->page_offset += truesize; 2018 #endif 2019 } 2020 2021 static struct ixgbe_rx_buffer *ixgbe_get_rx_buffer(struct ixgbe_ring *rx_ring, 2022 union ixgbe_adv_rx_desc *rx_desc, 2023 struct sk_buff **skb, 2024 const unsigned int size, 2025 int *rx_buffer_pgcnt) 2026 { 2027 struct ixgbe_rx_buffer *rx_buffer; 2028 2029 rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; 2030 *rx_buffer_pgcnt = 2031 #if (PAGE_SIZE < 8192) 2032 page_count(rx_buffer->page); 2033 #else 2034 0; 2035 #endif 2036 prefetchw(rx_buffer->page); 2037 *skb = rx_buffer->skb; 2038 2039 /* Delay unmapping of the first packet. It carries the header 2040 * information, HW may still access the header after the writeback. 2041 * Only unmap it when EOP is reached 2042 */ 2043 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) { 2044 if (!*skb) 2045 goto skip_sync; 2046 } else { 2047 if (*skb) 2048 ixgbe_dma_sync_frag(rx_ring, *skb); 2049 } 2050 2051 /* we are reusing so sync this buffer for CPU use */ 2052 dma_sync_single_range_for_cpu(rx_ring->dev, 2053 rx_buffer->dma, 2054 rx_buffer->page_offset, 2055 size, 2056 DMA_FROM_DEVICE); 2057 skip_sync: 2058 rx_buffer->pagecnt_bias--; 2059 2060 return rx_buffer; 2061 } 2062 2063 static void ixgbe_put_rx_buffer(struct ixgbe_ring *rx_ring, 2064 struct ixgbe_rx_buffer *rx_buffer, 2065 struct sk_buff *skb, 2066 int rx_buffer_pgcnt) 2067 { 2068 if (ixgbe_can_reuse_rx_page(rx_buffer, rx_buffer_pgcnt)) { 2069 /* hand second half of page back to the ring */ 2070 ixgbe_reuse_rx_page(rx_ring, rx_buffer); 2071 } else { 2072 if (!IS_ERR(skb) && IXGBE_CB(skb)->dma == rx_buffer->dma) { 2073 /* the page has been released from the ring */ 2074 IXGBE_CB(skb)->page_released = true; 2075 } else { 2076 /* we are not reusing the buffer so unmap it */ 2077 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, 2078 ixgbe_rx_pg_size(rx_ring), 2079 DMA_FROM_DEVICE, 2080 IXGBE_RX_DMA_ATTR); 2081 } 2082 __page_frag_cache_drain(rx_buffer->page, 2083 rx_buffer->pagecnt_bias); 2084 } 2085 2086 /* clear contents of rx_buffer */ 2087 rx_buffer->page = NULL; 2088 rx_buffer->skb = NULL; 2089 } 2090 2091 static struct sk_buff *ixgbe_construct_skb(struct ixgbe_ring *rx_ring, 2092 struct ixgbe_rx_buffer *rx_buffer, 2093 struct xdp_buff *xdp, 2094 union ixgbe_adv_rx_desc *rx_desc) 2095 { 2096 unsigned int size = xdp->data_end - xdp->data; 2097 #if (PAGE_SIZE < 8192) 2098 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2099 #else 2100 unsigned int truesize = SKB_DATA_ALIGN(xdp->data_end - 2101 xdp->data_hard_start); 2102 #endif 2103 struct sk_buff *skb; 2104 2105 /* prefetch first cache line of first page */ 2106 net_prefetch(xdp->data); 2107 2108 /* Note, we get here by enabling legacy-rx via: 2109 * 2110 * ethtool --set-priv-flags <dev> legacy-rx on 2111 * 2112 * In this mode, we currently get 0 extra XDP headroom as 2113 * opposed to having legacy-rx off, where we process XDP 2114 * packets going to stack via ixgbe_build_skb(). The latter 2115 * provides us currently with 192 bytes of headroom. 2116 * 2117 * For ixgbe_construct_skb() mode it means that the 2118 * xdp->data_meta will always point to xdp->data, since 2119 * the helper cannot expand the head. Should this ever 2120 * change in future for legacy-rx mode on, then lets also 2121 * add xdp->data_meta handling here. 2122 */ 2123 2124 /* allocate a skb to store the frags */ 2125 skb = napi_alloc_skb(&rx_ring->q_vector->napi, IXGBE_RX_HDR_SIZE); 2126 if (unlikely(!skb)) 2127 return NULL; 2128 2129 if (size > IXGBE_RX_HDR_SIZE) { 2130 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) 2131 IXGBE_CB(skb)->dma = rx_buffer->dma; 2132 2133 skb_add_rx_frag(skb, 0, rx_buffer->page, 2134 xdp->data - page_address(rx_buffer->page), 2135 size, truesize); 2136 #if (PAGE_SIZE < 8192) 2137 rx_buffer->page_offset ^= truesize; 2138 #else 2139 rx_buffer->page_offset += truesize; 2140 #endif 2141 } else { 2142 memcpy(__skb_put(skb, size), 2143 xdp->data, ALIGN(size, sizeof(long))); 2144 rx_buffer->pagecnt_bias++; 2145 } 2146 2147 return skb; 2148 } 2149 2150 static struct sk_buff *ixgbe_build_skb(struct ixgbe_ring *rx_ring, 2151 struct ixgbe_rx_buffer *rx_buffer, 2152 struct xdp_buff *xdp, 2153 union ixgbe_adv_rx_desc *rx_desc) 2154 { 2155 unsigned int metasize = xdp->data - xdp->data_meta; 2156 #if (PAGE_SIZE < 8192) 2157 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2158 #else 2159 unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + 2160 SKB_DATA_ALIGN(xdp->data_end - 2161 xdp->data_hard_start); 2162 #endif 2163 struct sk_buff *skb; 2164 2165 /* Prefetch first cache line of first page. If xdp->data_meta 2166 * is unused, this points extactly as xdp->data, otherwise we 2167 * likely have a consumer accessing first few bytes of meta 2168 * data, and then actual data. 2169 */ 2170 net_prefetch(xdp->data_meta); 2171 2172 /* build an skb to around the page buffer */ 2173 skb = napi_build_skb(xdp->data_hard_start, truesize); 2174 if (unlikely(!skb)) 2175 return NULL; 2176 2177 /* update pointers within the skb to store the data */ 2178 skb_reserve(skb, xdp->data - xdp->data_hard_start); 2179 __skb_put(skb, xdp->data_end - xdp->data); 2180 if (metasize) 2181 skb_metadata_set(skb, metasize); 2182 2183 /* record DMA address if this is the start of a chain of buffers */ 2184 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) 2185 IXGBE_CB(skb)->dma = rx_buffer->dma; 2186 2187 /* update buffer offset */ 2188 #if (PAGE_SIZE < 8192) 2189 rx_buffer->page_offset ^= truesize; 2190 #else 2191 rx_buffer->page_offset += truesize; 2192 #endif 2193 2194 return skb; 2195 } 2196 2197 static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter, 2198 struct ixgbe_ring *rx_ring, 2199 struct xdp_buff *xdp) 2200 { 2201 int err, result = IXGBE_XDP_PASS; 2202 struct bpf_prog *xdp_prog; 2203 struct ixgbe_ring *ring; 2204 struct xdp_frame *xdpf; 2205 u32 act; 2206 2207 xdp_prog = READ_ONCE(rx_ring->xdp_prog); 2208 2209 if (!xdp_prog) 2210 goto xdp_out; 2211 2212 prefetchw(xdp->data_hard_start); /* xdp_frame write */ 2213 2214 act = bpf_prog_run_xdp(xdp_prog, xdp); 2215 switch (act) { 2216 case XDP_PASS: 2217 break; 2218 case XDP_TX: 2219 xdpf = xdp_convert_buff_to_frame(xdp); 2220 if (unlikely(!xdpf)) 2221 goto out_failure; 2222 ring = ixgbe_determine_xdp_ring(adapter); 2223 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 2224 spin_lock(&ring->tx_lock); 2225 result = ixgbe_xmit_xdp_ring(ring, xdpf); 2226 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 2227 spin_unlock(&ring->tx_lock); 2228 if (result == IXGBE_XDP_CONSUMED) 2229 goto out_failure; 2230 break; 2231 case XDP_REDIRECT: 2232 err = xdp_do_redirect(adapter->netdev, xdp, xdp_prog); 2233 if (err) 2234 goto out_failure; 2235 result = IXGBE_XDP_REDIR; 2236 break; 2237 default: 2238 bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act); 2239 fallthrough; 2240 case XDP_ABORTED: 2241 out_failure: 2242 trace_xdp_exception(rx_ring->netdev, xdp_prog, act); 2243 fallthrough; /* handle aborts by dropping packet */ 2244 case XDP_DROP: 2245 result = IXGBE_XDP_CONSUMED; 2246 break; 2247 } 2248 xdp_out: 2249 return ERR_PTR(-result); 2250 } 2251 2252 static unsigned int ixgbe_rx_frame_truesize(struct ixgbe_ring *rx_ring, 2253 unsigned int size) 2254 { 2255 unsigned int truesize; 2256 2257 #if (PAGE_SIZE < 8192) 2258 truesize = ixgbe_rx_pg_size(rx_ring) / 2; /* Must be power-of-2 */ 2259 #else 2260 truesize = rx_ring->rx_offset ? 2261 SKB_DATA_ALIGN(rx_ring->rx_offset + size) + 2262 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) : 2263 SKB_DATA_ALIGN(size); 2264 #endif 2265 return truesize; 2266 } 2267 2268 static void ixgbe_rx_buffer_flip(struct ixgbe_ring *rx_ring, 2269 struct ixgbe_rx_buffer *rx_buffer, 2270 unsigned int size) 2271 { 2272 unsigned int truesize = ixgbe_rx_frame_truesize(rx_ring, size); 2273 #if (PAGE_SIZE < 8192) 2274 rx_buffer->page_offset ^= truesize; 2275 #else 2276 rx_buffer->page_offset += truesize; 2277 #endif 2278 } 2279 2280 /** 2281 * ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf 2282 * @q_vector: structure containing interrupt and ring information 2283 * @rx_ring: rx descriptor ring to transact packets on 2284 * @budget: Total limit on number of packets to process 2285 * 2286 * This function provides a "bounce buffer" approach to Rx interrupt 2287 * processing. The advantage to this is that on systems that have 2288 * expensive overhead for IOMMU access this provides a means of avoiding 2289 * it by maintaining the mapping of the page to the syste. 2290 * 2291 * Returns amount of work completed 2292 **/ 2293 static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, 2294 struct ixgbe_ring *rx_ring, 2295 const int budget) 2296 { 2297 unsigned int total_rx_bytes = 0, total_rx_packets = 0, frame_sz = 0; 2298 struct ixgbe_adapter *adapter = q_vector->adapter; 2299 #ifdef IXGBE_FCOE 2300 int ddp_bytes; 2301 unsigned int mss = 0; 2302 #endif /* IXGBE_FCOE */ 2303 u16 cleaned_count = ixgbe_desc_unused(rx_ring); 2304 unsigned int offset = rx_ring->rx_offset; 2305 unsigned int xdp_xmit = 0; 2306 struct xdp_buff xdp; 2307 2308 /* Frame size depend on rx_ring setup when PAGE_SIZE=4K */ 2309 #if (PAGE_SIZE < 8192) 2310 frame_sz = ixgbe_rx_frame_truesize(rx_ring, 0); 2311 #endif 2312 xdp_init_buff(&xdp, frame_sz, &rx_ring->xdp_rxq); 2313 2314 while (likely(total_rx_packets < budget)) { 2315 union ixgbe_adv_rx_desc *rx_desc; 2316 struct ixgbe_rx_buffer *rx_buffer; 2317 struct sk_buff *skb; 2318 int rx_buffer_pgcnt; 2319 unsigned int size; 2320 2321 /* return some buffers to hardware, one at a time is too slow */ 2322 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { 2323 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count); 2324 cleaned_count = 0; 2325 } 2326 2327 rx_desc = IXGBE_RX_DESC(rx_ring, rx_ring->next_to_clean); 2328 size = le16_to_cpu(rx_desc->wb.upper.length); 2329 if (!size) 2330 break; 2331 2332 /* This memory barrier is needed to keep us from reading 2333 * any other fields out of the rx_desc until we know the 2334 * descriptor has been written back 2335 */ 2336 dma_rmb(); 2337 2338 rx_buffer = ixgbe_get_rx_buffer(rx_ring, rx_desc, &skb, size, &rx_buffer_pgcnt); 2339 2340 /* retrieve a buffer from the ring */ 2341 if (!skb) { 2342 unsigned char *hard_start; 2343 2344 hard_start = page_address(rx_buffer->page) + 2345 rx_buffer->page_offset - offset; 2346 xdp_prepare_buff(&xdp, hard_start, offset, size, true); 2347 xdp_buff_clear_frags_flag(&xdp); 2348 #if (PAGE_SIZE > 4096) 2349 /* At larger PAGE_SIZE, frame_sz depend on len size */ 2350 xdp.frame_sz = ixgbe_rx_frame_truesize(rx_ring, size); 2351 #endif 2352 skb = ixgbe_run_xdp(adapter, rx_ring, &xdp); 2353 } 2354 2355 if (IS_ERR(skb)) { 2356 unsigned int xdp_res = -PTR_ERR(skb); 2357 2358 if (xdp_res & (IXGBE_XDP_TX | IXGBE_XDP_REDIR)) { 2359 xdp_xmit |= xdp_res; 2360 ixgbe_rx_buffer_flip(rx_ring, rx_buffer, size); 2361 } else { 2362 rx_buffer->pagecnt_bias++; 2363 } 2364 total_rx_packets++; 2365 total_rx_bytes += size; 2366 } else if (skb) { 2367 ixgbe_add_rx_frag(rx_ring, rx_buffer, skb, size); 2368 } else if (ring_uses_build_skb(rx_ring)) { 2369 skb = ixgbe_build_skb(rx_ring, rx_buffer, 2370 &xdp, rx_desc); 2371 } else { 2372 skb = ixgbe_construct_skb(rx_ring, rx_buffer, 2373 &xdp, rx_desc); 2374 } 2375 2376 /* exit if we failed to retrieve a buffer */ 2377 if (!skb) { 2378 rx_ring->rx_stats.alloc_rx_buff_failed++; 2379 rx_buffer->pagecnt_bias++; 2380 break; 2381 } 2382 2383 ixgbe_put_rx_buffer(rx_ring, rx_buffer, skb, rx_buffer_pgcnt); 2384 cleaned_count++; 2385 2386 /* place incomplete frames back on ring for completion */ 2387 if (ixgbe_is_non_eop(rx_ring, rx_desc, skb)) 2388 continue; 2389 2390 /* verify the packet layout is correct */ 2391 if (ixgbe_cleanup_headers(rx_ring, rx_desc, skb)) 2392 continue; 2393 2394 /* probably a little skewed due to removing CRC */ 2395 total_rx_bytes += skb->len; 2396 2397 /* populate checksum, timestamp, VLAN, and protocol */ 2398 ixgbe_process_skb_fields(rx_ring, rx_desc, skb); 2399 2400 #ifdef IXGBE_FCOE 2401 /* if ddp, not passing to ULD unless for FCP_RSP or error */ 2402 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) { 2403 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb); 2404 /* include DDPed FCoE data */ 2405 if (ddp_bytes > 0) { 2406 if (!mss) { 2407 mss = rx_ring->netdev->mtu - 2408 sizeof(struct fcoe_hdr) - 2409 sizeof(struct fc_frame_header) - 2410 sizeof(struct fcoe_crc_eof); 2411 if (mss > 512) 2412 mss &= ~511; 2413 } 2414 total_rx_bytes += ddp_bytes; 2415 total_rx_packets += DIV_ROUND_UP(ddp_bytes, 2416 mss); 2417 } 2418 if (!ddp_bytes) { 2419 dev_kfree_skb_any(skb); 2420 continue; 2421 } 2422 } 2423 2424 #endif /* IXGBE_FCOE */ 2425 ixgbe_rx_skb(q_vector, skb); 2426 2427 /* update budget accounting */ 2428 total_rx_packets++; 2429 } 2430 2431 if (xdp_xmit & IXGBE_XDP_REDIR) 2432 xdp_do_flush_map(); 2433 2434 if (xdp_xmit & IXGBE_XDP_TX) { 2435 struct ixgbe_ring *ring = ixgbe_determine_xdp_ring(adapter); 2436 2437 ixgbe_xdp_ring_update_tail_locked(ring); 2438 } 2439 2440 u64_stats_update_begin(&rx_ring->syncp); 2441 rx_ring->stats.packets += total_rx_packets; 2442 rx_ring->stats.bytes += total_rx_bytes; 2443 u64_stats_update_end(&rx_ring->syncp); 2444 q_vector->rx.total_packets += total_rx_packets; 2445 q_vector->rx.total_bytes += total_rx_bytes; 2446 2447 return total_rx_packets; 2448 } 2449 2450 /** 2451 * ixgbe_configure_msix - Configure MSI-X hardware 2452 * @adapter: board private structure 2453 * 2454 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X 2455 * interrupts. 2456 **/ 2457 static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) 2458 { 2459 struct ixgbe_q_vector *q_vector; 2460 int v_idx; 2461 u32 mask; 2462 2463 /* Populate MSIX to EITR Select */ 2464 if (adapter->num_vfs > 32) { 2465 u32 eitrsel = BIT(adapter->num_vfs - 32) - 1; 2466 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel); 2467 } 2468 2469 /* 2470 * Populate the IVAR table and set the ITR values to the 2471 * corresponding register. 2472 */ 2473 for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { 2474 struct ixgbe_ring *ring; 2475 q_vector = adapter->q_vector[v_idx]; 2476 2477 ixgbe_for_each_ring(ring, q_vector->rx) 2478 ixgbe_set_ivar(adapter, 0, ring->reg_idx, v_idx); 2479 2480 ixgbe_for_each_ring(ring, q_vector->tx) 2481 ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx); 2482 2483 ixgbe_write_eitr(q_vector); 2484 } 2485 2486 switch (adapter->hw.mac.type) { 2487 case ixgbe_mac_82598EB: 2488 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX, 2489 v_idx); 2490 break; 2491 case ixgbe_mac_82599EB: 2492 case ixgbe_mac_X540: 2493 case ixgbe_mac_X550: 2494 case ixgbe_mac_X550EM_x: 2495 case ixgbe_mac_x550em_a: 2496 ixgbe_set_ivar(adapter, -1, 1, v_idx); 2497 break; 2498 default: 2499 break; 2500 } 2501 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950); 2502 2503 /* set up to autoclear timer, and the vectors */ 2504 mask = IXGBE_EIMS_ENABLE_MASK; 2505 mask &= ~(IXGBE_EIMS_OTHER | 2506 IXGBE_EIMS_MAILBOX | 2507 IXGBE_EIMS_LSC); 2508 2509 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); 2510 } 2511 2512 /** 2513 * ixgbe_update_itr - update the dynamic ITR value based on statistics 2514 * @q_vector: structure containing interrupt and ring information 2515 * @ring_container: structure containing ring performance data 2516 * 2517 * Stores a new ITR value based on packets and byte 2518 * counts during the last interrupt. The advantage of per interrupt 2519 * computation is faster updates and more accurate ITR for the current 2520 * traffic pattern. Constants in this function were computed 2521 * based on theoretical maximum wire speed and thresholds were set based 2522 * on testing data as well as attempting to minimize response time 2523 * while increasing bulk throughput. 2524 **/ 2525 static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector, 2526 struct ixgbe_ring_container *ring_container) 2527 { 2528 unsigned int itr = IXGBE_ITR_ADAPTIVE_MIN_USECS | 2529 IXGBE_ITR_ADAPTIVE_LATENCY; 2530 unsigned int avg_wire_size, packets, bytes; 2531 unsigned long next_update = jiffies; 2532 2533 /* If we don't have any rings just leave ourselves set for maximum 2534 * possible latency so we take ourselves out of the equation. 2535 */ 2536 if (!ring_container->ring) 2537 return; 2538 2539 /* If we didn't update within up to 1 - 2 jiffies we can assume 2540 * that either packets are coming in so slow there hasn't been 2541 * any work, or that there is so much work that NAPI is dealing 2542 * with interrupt moderation and we don't need to do anything. 2543 */ 2544 if (time_after(next_update, ring_container->next_update)) 2545 goto clear_counts; 2546 2547 packets = ring_container->total_packets; 2548 2549 /* We have no packets to actually measure against. This means 2550 * either one of the other queues on this vector is active or 2551 * we are a Tx queue doing TSO with too high of an interrupt rate. 2552 * 2553 * When this occurs just tick up our delay by the minimum value 2554 * and hope that this extra delay will prevent us from being called 2555 * without any work on our queue. 2556 */ 2557 if (!packets) { 2558 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; 2559 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) 2560 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; 2561 itr += ring_container->itr & IXGBE_ITR_ADAPTIVE_LATENCY; 2562 goto clear_counts; 2563 } 2564 2565 bytes = ring_container->total_bytes; 2566 2567 /* If packets are less than 4 or bytes are less than 9000 assume 2568 * insufficient data to use bulk rate limiting approach. We are 2569 * likely latency driven. 2570 */ 2571 if (packets < 4 && bytes < 9000) { 2572 itr = IXGBE_ITR_ADAPTIVE_LATENCY; 2573 goto adjust_by_size; 2574 } 2575 2576 /* Between 4 and 48 we can assume that our current interrupt delay 2577 * is only slightly too low. As such we should increase it by a small 2578 * fixed amount. 2579 */ 2580 if (packets < 48) { 2581 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; 2582 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) 2583 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; 2584 goto clear_counts; 2585 } 2586 2587 /* Between 48 and 96 is our "goldilocks" zone where we are working 2588 * out "just right". Just report that our current ITR is good for us. 2589 */ 2590 if (packets < 96) { 2591 itr = q_vector->itr >> 2; 2592 goto clear_counts; 2593 } 2594 2595 /* If packet count is 96 or greater we are likely looking at a slight 2596 * overrun of the delay we want. Try halving our delay to see if that 2597 * will cut the number of packets in half per interrupt. 2598 */ 2599 if (packets < 256) { 2600 itr = q_vector->itr >> 3; 2601 if (itr < IXGBE_ITR_ADAPTIVE_MIN_USECS) 2602 itr = IXGBE_ITR_ADAPTIVE_MIN_USECS; 2603 goto clear_counts; 2604 } 2605 2606 /* The paths below assume we are dealing with a bulk ITR since number 2607 * of packets is 256 or greater. We are just going to have to compute 2608 * a value and try to bring the count under control, though for smaller 2609 * packet sizes there isn't much we can do as NAPI polling will likely 2610 * be kicking in sooner rather than later. 2611 */ 2612 itr = IXGBE_ITR_ADAPTIVE_BULK; 2613 2614 adjust_by_size: 2615 /* If packet counts are 256 or greater we can assume we have a gross 2616 * overestimation of what the rate should be. Instead of trying to fine 2617 * tune it just use the formula below to try and dial in an exact value 2618 * give the current packet size of the frame. 2619 */ 2620 avg_wire_size = bytes / packets; 2621 2622 /* The following is a crude approximation of: 2623 * wmem_default / (size + overhead) = desired_pkts_per_int 2624 * rate / bits_per_byte / (size + ethernet overhead) = pkt_rate 2625 * (desired_pkt_rate / pkt_rate) * usecs_per_sec = ITR value 2626 * 2627 * Assuming wmem_default is 212992 and overhead is 640 bytes per 2628 * packet, (256 skb, 64 headroom, 320 shared info), we can reduce the 2629 * formula down to 2630 * 2631 * (170 * (size + 24)) / (size + 640) = ITR 2632 * 2633 * We first do some math on the packet size and then finally bitshift 2634 * by 8 after rounding up. We also have to account for PCIe link speed 2635 * difference as ITR scales based on this. 2636 */ 2637 if (avg_wire_size <= 60) { 2638 /* Start at 50k ints/sec */ 2639 avg_wire_size = 5120; 2640 } else if (avg_wire_size <= 316) { 2641 /* 50K ints/sec to 16K ints/sec */ 2642 avg_wire_size *= 40; 2643 avg_wire_size += 2720; 2644 } else if (avg_wire_size <= 1084) { 2645 /* 16K ints/sec to 9.2K ints/sec */ 2646 avg_wire_size *= 15; 2647 avg_wire_size += 11452; 2648 } else if (avg_wire_size < 1968) { 2649 /* 9.2K ints/sec to 8K ints/sec */ 2650 avg_wire_size *= 5; 2651 avg_wire_size += 22420; 2652 } else { 2653 /* plateau at a limit of 8K ints/sec */ 2654 avg_wire_size = 32256; 2655 } 2656 2657 /* If we are in low latency mode half our delay which doubles the rate 2658 * to somewhere between 100K to 16K ints/sec 2659 */ 2660 if (itr & IXGBE_ITR_ADAPTIVE_LATENCY) 2661 avg_wire_size >>= 1; 2662 2663 /* Resultant value is 256 times larger than it needs to be. This 2664 * gives us room to adjust the value as needed to either increase 2665 * or decrease the value based on link speeds of 10G, 2.5G, 1G, etc. 2666 * 2667 * Use addition as we have already recorded the new latency flag 2668 * for the ITR value. 2669 */ 2670 switch (q_vector->adapter->link_speed) { 2671 case IXGBE_LINK_SPEED_10GB_FULL: 2672 case IXGBE_LINK_SPEED_100_FULL: 2673 default: 2674 itr += DIV_ROUND_UP(avg_wire_size, 2675 IXGBE_ITR_ADAPTIVE_MIN_INC * 256) * 2676 IXGBE_ITR_ADAPTIVE_MIN_INC; 2677 break; 2678 case IXGBE_LINK_SPEED_2_5GB_FULL: 2679 case IXGBE_LINK_SPEED_1GB_FULL: 2680 case IXGBE_LINK_SPEED_10_FULL: 2681 if (avg_wire_size > 8064) 2682 avg_wire_size = 8064; 2683 itr += DIV_ROUND_UP(avg_wire_size, 2684 IXGBE_ITR_ADAPTIVE_MIN_INC * 64) * 2685 IXGBE_ITR_ADAPTIVE_MIN_INC; 2686 break; 2687 } 2688 2689 clear_counts: 2690 /* write back value */ 2691 ring_container->itr = itr; 2692 2693 /* next update should occur within next jiffy */ 2694 ring_container->next_update = next_update + 1; 2695 2696 ring_container->total_bytes = 0; 2697 ring_container->total_packets = 0; 2698 } 2699 2700 /** 2701 * ixgbe_write_eitr - write EITR register in hardware specific way 2702 * @q_vector: structure containing interrupt and ring information 2703 * 2704 * This function is made to be called by ethtool and by the driver 2705 * when it needs to update EITR registers at runtime. Hardware 2706 * specific quirks/differences are taken care of here. 2707 */ 2708 void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector) 2709 { 2710 struct ixgbe_adapter *adapter = q_vector->adapter; 2711 struct ixgbe_hw *hw = &adapter->hw; 2712 int v_idx = q_vector->v_idx; 2713 u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR; 2714 2715 switch (adapter->hw.mac.type) { 2716 case ixgbe_mac_82598EB: 2717 /* must write high and low 16 bits to reset counter */ 2718 itr_reg |= (itr_reg << 16); 2719 break; 2720 case ixgbe_mac_82599EB: 2721 case ixgbe_mac_X540: 2722 case ixgbe_mac_X550: 2723 case ixgbe_mac_X550EM_x: 2724 case ixgbe_mac_x550em_a: 2725 /* 2726 * set the WDIS bit to not clear the timer bits and cause an 2727 * immediate assertion of the interrupt 2728 */ 2729 itr_reg |= IXGBE_EITR_CNT_WDIS; 2730 break; 2731 default: 2732 break; 2733 } 2734 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg); 2735 } 2736 2737 static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector) 2738 { 2739 u32 new_itr; 2740 2741 ixgbe_update_itr(q_vector, &q_vector->tx); 2742 ixgbe_update_itr(q_vector, &q_vector->rx); 2743 2744 /* use the smallest value of new ITR delay calculations */ 2745 new_itr = min(q_vector->rx.itr, q_vector->tx.itr); 2746 2747 /* Clear latency flag if set, shift into correct position */ 2748 new_itr &= ~IXGBE_ITR_ADAPTIVE_LATENCY; 2749 new_itr <<= 2; 2750 2751 if (new_itr != q_vector->itr) { 2752 /* save the algorithm value here */ 2753 q_vector->itr = new_itr; 2754 2755 ixgbe_write_eitr(q_vector); 2756 } 2757 } 2758 2759 /** 2760 * ixgbe_check_overtemp_subtask - check for over temperature 2761 * @adapter: pointer to adapter 2762 **/ 2763 static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter) 2764 { 2765 struct ixgbe_hw *hw = &adapter->hw; 2766 u32 eicr = adapter->interrupt_event; 2767 s32 rc; 2768 2769 if (test_bit(__IXGBE_DOWN, &adapter->state)) 2770 return; 2771 2772 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT)) 2773 return; 2774 2775 adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2776 2777 switch (hw->device_id) { 2778 case IXGBE_DEV_ID_82599_T3_LOM: 2779 /* 2780 * Since the warning interrupt is for both ports 2781 * we don't have to check if: 2782 * - This interrupt wasn't for our port. 2783 * - We may have missed the interrupt so always have to 2784 * check if we got a LSC 2785 */ 2786 if (!(eicr & IXGBE_EICR_GPI_SDP0_8259X) && 2787 !(eicr & IXGBE_EICR_LSC)) 2788 return; 2789 2790 if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) { 2791 u32 speed; 2792 bool link_up = false; 2793 2794 hw->mac.ops.check_link(hw, &speed, &link_up, false); 2795 2796 if (link_up) 2797 return; 2798 } 2799 2800 /* Check if this is not due to overtemp */ 2801 if (hw->phy.ops.check_overtemp(hw) != IXGBE_ERR_OVERTEMP) 2802 return; 2803 2804 break; 2805 case IXGBE_DEV_ID_X550EM_A_1G_T: 2806 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 2807 rc = hw->phy.ops.check_overtemp(hw); 2808 if (rc != IXGBE_ERR_OVERTEMP) 2809 return; 2810 break; 2811 default: 2812 if (adapter->hw.mac.type >= ixgbe_mac_X540) 2813 return; 2814 if (!(eicr & IXGBE_EICR_GPI_SDP0(hw))) 2815 return; 2816 break; 2817 } 2818 e_crit(drv, "%s\n", ixgbe_overheat_msg); 2819 2820 adapter->interrupt_event = 0; 2821 } 2822 2823 static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr) 2824 { 2825 struct ixgbe_hw *hw = &adapter->hw; 2826 2827 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) && 2828 (eicr & IXGBE_EICR_GPI_SDP1(hw))) { 2829 e_crit(probe, "Fan has stopped, replace the adapter\n"); 2830 /* write to clear the interrupt */ 2831 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); 2832 } 2833 } 2834 2835 static void ixgbe_check_overtemp_event(struct ixgbe_adapter *adapter, u32 eicr) 2836 { 2837 struct ixgbe_hw *hw = &adapter->hw; 2838 2839 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)) 2840 return; 2841 2842 switch (adapter->hw.mac.type) { 2843 case ixgbe_mac_82599EB: 2844 /* 2845 * Need to check link state so complete overtemp check 2846 * on service task 2847 */ 2848 if (((eicr & IXGBE_EICR_GPI_SDP0(hw)) || 2849 (eicr & IXGBE_EICR_LSC)) && 2850 (!test_bit(__IXGBE_DOWN, &adapter->state))) { 2851 adapter->interrupt_event = eicr; 2852 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2853 ixgbe_service_event_schedule(adapter); 2854 return; 2855 } 2856 return; 2857 case ixgbe_mac_x550em_a: 2858 if (eicr & IXGBE_EICR_GPI_SDP0_X550EM_a) { 2859 adapter->interrupt_event = eicr; 2860 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2861 ixgbe_service_event_schedule(adapter); 2862 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 2863 IXGBE_EICR_GPI_SDP0_X550EM_a); 2864 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICR, 2865 IXGBE_EICR_GPI_SDP0_X550EM_a); 2866 } 2867 return; 2868 case ixgbe_mac_X550: 2869 case ixgbe_mac_X540: 2870 if (!(eicr & IXGBE_EICR_TS)) 2871 return; 2872 break; 2873 default: 2874 return; 2875 } 2876 2877 e_crit(drv, "%s\n", ixgbe_overheat_msg); 2878 } 2879 2880 static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw) 2881 { 2882 switch (hw->mac.type) { 2883 case ixgbe_mac_82598EB: 2884 if (hw->phy.type == ixgbe_phy_nl) 2885 return true; 2886 return false; 2887 case ixgbe_mac_82599EB: 2888 case ixgbe_mac_X550EM_x: 2889 case ixgbe_mac_x550em_a: 2890 switch (hw->mac.ops.get_media_type(hw)) { 2891 case ixgbe_media_type_fiber: 2892 case ixgbe_media_type_fiber_qsfp: 2893 return true; 2894 default: 2895 return false; 2896 } 2897 default: 2898 return false; 2899 } 2900 } 2901 2902 static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr) 2903 { 2904 struct ixgbe_hw *hw = &adapter->hw; 2905 u32 eicr_mask = IXGBE_EICR_GPI_SDP2(hw); 2906 2907 if (!ixgbe_is_sfp(hw)) 2908 return; 2909 2910 /* Later MAC's use different SDP */ 2911 if (hw->mac.type >= ixgbe_mac_X540) 2912 eicr_mask = IXGBE_EICR_GPI_SDP0_X540; 2913 2914 if (eicr & eicr_mask) { 2915 /* Clear the interrupt */ 2916 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr_mask); 2917 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2918 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 2919 adapter->sfp_poll_time = 0; 2920 ixgbe_service_event_schedule(adapter); 2921 } 2922 } 2923 2924 if (adapter->hw.mac.type == ixgbe_mac_82599EB && 2925 (eicr & IXGBE_EICR_GPI_SDP1(hw))) { 2926 /* Clear the interrupt */ 2927 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); 2928 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2929 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; 2930 ixgbe_service_event_schedule(adapter); 2931 } 2932 } 2933 } 2934 2935 static void ixgbe_check_lsc(struct ixgbe_adapter *adapter) 2936 { 2937 struct ixgbe_hw *hw = &adapter->hw; 2938 2939 adapter->lsc_int++; 2940 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 2941 adapter->link_check_timeout = jiffies; 2942 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 2943 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC); 2944 IXGBE_WRITE_FLUSH(hw); 2945 ixgbe_service_event_schedule(adapter); 2946 } 2947 } 2948 2949 static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter, 2950 u64 qmask) 2951 { 2952 u32 mask; 2953 struct ixgbe_hw *hw = &adapter->hw; 2954 2955 switch (hw->mac.type) { 2956 case ixgbe_mac_82598EB: 2957 mask = (IXGBE_EIMS_RTX_QUEUE & qmask); 2958 IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask); 2959 break; 2960 case ixgbe_mac_82599EB: 2961 case ixgbe_mac_X540: 2962 case ixgbe_mac_X550: 2963 case ixgbe_mac_X550EM_x: 2964 case ixgbe_mac_x550em_a: 2965 mask = (qmask & 0xFFFFFFFF); 2966 if (mask) 2967 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask); 2968 mask = (qmask >> 32); 2969 if (mask) 2970 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask); 2971 break; 2972 default: 2973 break; 2974 } 2975 /* skip the flush */ 2976 } 2977 2978 /** 2979 * ixgbe_irq_enable - Enable default interrupt generation settings 2980 * @adapter: board private structure 2981 * @queues: enable irqs for queues 2982 * @flush: flush register write 2983 **/ 2984 static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues, 2985 bool flush) 2986 { 2987 struct ixgbe_hw *hw = &adapter->hw; 2988 u32 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE); 2989 2990 /* don't reenable LSC while waiting for link */ 2991 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) 2992 mask &= ~IXGBE_EIMS_LSC; 2993 2994 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) 2995 switch (adapter->hw.mac.type) { 2996 case ixgbe_mac_82599EB: 2997 mask |= IXGBE_EIMS_GPI_SDP0(hw); 2998 break; 2999 case ixgbe_mac_X540: 3000 case ixgbe_mac_X550: 3001 case ixgbe_mac_X550EM_x: 3002 case ixgbe_mac_x550em_a: 3003 mask |= IXGBE_EIMS_TS; 3004 break; 3005 default: 3006 break; 3007 } 3008 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) 3009 mask |= IXGBE_EIMS_GPI_SDP1(hw); 3010 switch (adapter->hw.mac.type) { 3011 case ixgbe_mac_82599EB: 3012 mask |= IXGBE_EIMS_GPI_SDP1(hw); 3013 mask |= IXGBE_EIMS_GPI_SDP2(hw); 3014 fallthrough; 3015 case ixgbe_mac_X540: 3016 case ixgbe_mac_X550: 3017 case ixgbe_mac_X550EM_x: 3018 case ixgbe_mac_x550em_a: 3019 if (adapter->hw.device_id == IXGBE_DEV_ID_X550EM_X_SFP || 3020 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP || 3021 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP_N) 3022 mask |= IXGBE_EIMS_GPI_SDP0(&adapter->hw); 3023 if (adapter->hw.phy.type == ixgbe_phy_x550em_ext_t) 3024 mask |= IXGBE_EICR_GPI_SDP0_X540; 3025 mask |= IXGBE_EIMS_ECC; 3026 mask |= IXGBE_EIMS_MAILBOX; 3027 break; 3028 default: 3029 break; 3030 } 3031 3032 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) && 3033 !(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT)) 3034 mask |= IXGBE_EIMS_FLOW_DIR; 3035 3036 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); 3037 if (queues) 3038 ixgbe_irq_enable_queues(adapter, ~0); 3039 if (flush) 3040 IXGBE_WRITE_FLUSH(&adapter->hw); 3041 } 3042 3043 static irqreturn_t ixgbe_msix_other(int irq, void *data) 3044 { 3045 struct ixgbe_adapter *adapter = data; 3046 struct ixgbe_hw *hw = &adapter->hw; 3047 u32 eicr; 3048 3049 /* 3050 * Workaround for Silicon errata. Use clear-by-write instead 3051 * of clear-by-read. Reading with EICS will return the 3052 * interrupt causes without clearing, which later be done 3053 * with the write to EICR. 3054 */ 3055 eicr = IXGBE_READ_REG(hw, IXGBE_EICS); 3056 3057 /* The lower 16bits of the EICR register are for the queue interrupts 3058 * which should be masked here in order to not accidentally clear them if 3059 * the bits are high when ixgbe_msix_other is called. There is a race 3060 * condition otherwise which results in possible performance loss 3061 * especially if the ixgbe_msix_other interrupt is triggering 3062 * consistently (as it would when PPS is turned on for the X540 device) 3063 */ 3064 eicr &= 0xFFFF0000; 3065 3066 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr); 3067 3068 if (eicr & IXGBE_EICR_LSC) 3069 ixgbe_check_lsc(adapter); 3070 3071 if (eicr & IXGBE_EICR_MAILBOX) 3072 ixgbe_msg_task(adapter); 3073 3074 switch (hw->mac.type) { 3075 case ixgbe_mac_82599EB: 3076 case ixgbe_mac_X540: 3077 case ixgbe_mac_X550: 3078 case ixgbe_mac_X550EM_x: 3079 case ixgbe_mac_x550em_a: 3080 if (hw->phy.type == ixgbe_phy_x550em_ext_t && 3081 (eicr & IXGBE_EICR_GPI_SDP0_X540)) { 3082 adapter->flags2 |= IXGBE_FLAG2_PHY_INTERRUPT; 3083 ixgbe_service_event_schedule(adapter); 3084 IXGBE_WRITE_REG(hw, IXGBE_EICR, 3085 IXGBE_EICR_GPI_SDP0_X540); 3086 } 3087 if (eicr & IXGBE_EICR_ECC) { 3088 e_info(link, "Received ECC Err, initiating reset\n"); 3089 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 3090 ixgbe_service_event_schedule(adapter); 3091 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); 3092 } 3093 /* Handle Flow Director Full threshold interrupt */ 3094 if (eicr & IXGBE_EICR_FLOW_DIR) { 3095 int reinit_count = 0; 3096 int i; 3097 for (i = 0; i < adapter->num_tx_queues; i++) { 3098 struct ixgbe_ring *ring = adapter->tx_ring[i]; 3099 if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE, 3100 &ring->state)) 3101 reinit_count++; 3102 } 3103 if (reinit_count) { 3104 /* no more flow director interrupts until after init */ 3105 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR); 3106 adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 3107 ixgbe_service_event_schedule(adapter); 3108 } 3109 } 3110 ixgbe_check_sfp_event(adapter, eicr); 3111 ixgbe_check_overtemp_event(adapter, eicr); 3112 break; 3113 default: 3114 break; 3115 } 3116 3117 ixgbe_check_fan_failure(adapter, eicr); 3118 3119 if (unlikely(eicr & IXGBE_EICR_TIMESYNC)) 3120 ixgbe_ptp_check_pps_event(adapter); 3121 3122 /* re-enable the original interrupt state, no lsc, no queues */ 3123 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3124 ixgbe_irq_enable(adapter, false, false); 3125 3126 return IRQ_HANDLED; 3127 } 3128 3129 static irqreturn_t ixgbe_msix_clean_rings(int irq, void *data) 3130 { 3131 struct ixgbe_q_vector *q_vector = data; 3132 3133 /* EIAM disabled interrupts (on this vector) for us */ 3134 3135 if (q_vector->rx.ring || q_vector->tx.ring) 3136 napi_schedule_irqoff(&q_vector->napi); 3137 3138 return IRQ_HANDLED; 3139 } 3140 3141 /** 3142 * ixgbe_poll - NAPI Rx polling callback 3143 * @napi: structure for representing this polling device 3144 * @budget: how many packets driver is allowed to clean 3145 * 3146 * This function is used for legacy and MSI, NAPI mode 3147 **/ 3148 int ixgbe_poll(struct napi_struct *napi, int budget) 3149 { 3150 struct ixgbe_q_vector *q_vector = 3151 container_of(napi, struct ixgbe_q_vector, napi); 3152 struct ixgbe_adapter *adapter = q_vector->adapter; 3153 struct ixgbe_ring *ring; 3154 int per_ring_budget, work_done = 0; 3155 bool clean_complete = true; 3156 3157 #ifdef CONFIG_IXGBE_DCA 3158 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 3159 ixgbe_update_dca(q_vector); 3160 #endif 3161 3162 ixgbe_for_each_ring(ring, q_vector->tx) { 3163 bool wd = ring->xsk_pool ? 3164 ixgbe_clean_xdp_tx_irq(q_vector, ring, budget) : 3165 ixgbe_clean_tx_irq(q_vector, ring, budget); 3166 3167 if (!wd) 3168 clean_complete = false; 3169 } 3170 3171 /* Exit if we are called by netpoll */ 3172 if (budget <= 0) 3173 return budget; 3174 3175 /* attempt to distribute budget to each queue fairly, but don't allow 3176 * the budget to go below 1 because we'll exit polling */ 3177 if (q_vector->rx.count > 1) 3178 per_ring_budget = max(budget/q_vector->rx.count, 1); 3179 else 3180 per_ring_budget = budget; 3181 3182 ixgbe_for_each_ring(ring, q_vector->rx) { 3183 int cleaned = ring->xsk_pool ? 3184 ixgbe_clean_rx_irq_zc(q_vector, ring, 3185 per_ring_budget) : 3186 ixgbe_clean_rx_irq(q_vector, ring, 3187 per_ring_budget); 3188 3189 work_done += cleaned; 3190 if (cleaned >= per_ring_budget) 3191 clean_complete = false; 3192 } 3193 3194 /* If all work not completed, return budget and keep polling */ 3195 if (!clean_complete) 3196 return budget; 3197 3198 /* all work done, exit the polling mode */ 3199 if (likely(napi_complete_done(napi, work_done))) { 3200 if (adapter->rx_itr_setting & 1) 3201 ixgbe_set_itr(q_vector); 3202 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3203 ixgbe_irq_enable_queues(adapter, 3204 BIT_ULL(q_vector->v_idx)); 3205 } 3206 3207 return min(work_done, budget - 1); 3208 } 3209 3210 /** 3211 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts 3212 * @adapter: board private structure 3213 * 3214 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests 3215 * interrupts from the kernel. 3216 **/ 3217 static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter) 3218 { 3219 struct net_device *netdev = adapter->netdev; 3220 unsigned int ri = 0, ti = 0; 3221 int vector, err; 3222 3223 for (vector = 0; vector < adapter->num_q_vectors; vector++) { 3224 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector]; 3225 struct msix_entry *entry = &adapter->msix_entries[vector]; 3226 3227 if (q_vector->tx.ring && q_vector->rx.ring) { 3228 snprintf(q_vector->name, sizeof(q_vector->name), 3229 "%s-TxRx-%u", netdev->name, ri++); 3230 ti++; 3231 } else if (q_vector->rx.ring) { 3232 snprintf(q_vector->name, sizeof(q_vector->name), 3233 "%s-rx-%u", netdev->name, ri++); 3234 } else if (q_vector->tx.ring) { 3235 snprintf(q_vector->name, sizeof(q_vector->name), 3236 "%s-tx-%u", netdev->name, ti++); 3237 } else { 3238 /* skip this unused q_vector */ 3239 continue; 3240 } 3241 err = request_irq(entry->vector, &ixgbe_msix_clean_rings, 0, 3242 q_vector->name, q_vector); 3243 if (err) { 3244 e_err(probe, "request_irq failed for MSIX interrupt " 3245 "Error: %d\n", err); 3246 goto free_queue_irqs; 3247 } 3248 /* If Flow Director is enabled, set interrupt affinity */ 3249 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 3250 /* assign the mask for this irq */ 3251 irq_update_affinity_hint(entry->vector, 3252 &q_vector->affinity_mask); 3253 } 3254 } 3255 3256 err = request_irq(adapter->msix_entries[vector].vector, 3257 ixgbe_msix_other, 0, netdev->name, adapter); 3258 if (err) { 3259 e_err(probe, "request_irq for msix_other failed: %d\n", err); 3260 goto free_queue_irqs; 3261 } 3262 3263 return 0; 3264 3265 free_queue_irqs: 3266 while (vector) { 3267 vector--; 3268 irq_update_affinity_hint(adapter->msix_entries[vector].vector, 3269 NULL); 3270 free_irq(adapter->msix_entries[vector].vector, 3271 adapter->q_vector[vector]); 3272 } 3273 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; 3274 pci_disable_msix(adapter->pdev); 3275 kfree(adapter->msix_entries); 3276 adapter->msix_entries = NULL; 3277 return err; 3278 } 3279 3280 /** 3281 * ixgbe_intr - legacy mode Interrupt Handler 3282 * @irq: interrupt number 3283 * @data: pointer to a network interface device structure 3284 **/ 3285 static irqreturn_t ixgbe_intr(int irq, void *data) 3286 { 3287 struct ixgbe_adapter *adapter = data; 3288 struct ixgbe_hw *hw = &adapter->hw; 3289 struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; 3290 u32 eicr; 3291 3292 /* 3293 * Workaround for silicon errata #26 on 82598. Mask the interrupt 3294 * before the read of EICR. 3295 */ 3296 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); 3297 3298 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read 3299 * therefore no explicit interrupt disable is necessary */ 3300 eicr = IXGBE_READ_REG(hw, IXGBE_EICR); 3301 if (!eicr) { 3302 /* 3303 * shared interrupt alert! 3304 * make sure interrupts are enabled because the read will 3305 * have disabled interrupts due to EIAM 3306 * finish the workaround of silicon errata on 82598. Unmask 3307 * the interrupt that we masked before the EICR read. 3308 */ 3309 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3310 ixgbe_irq_enable(adapter, true, true); 3311 return IRQ_NONE; /* Not our interrupt */ 3312 } 3313 3314 if (eicr & IXGBE_EICR_LSC) 3315 ixgbe_check_lsc(adapter); 3316 3317 switch (hw->mac.type) { 3318 case ixgbe_mac_82599EB: 3319 ixgbe_check_sfp_event(adapter, eicr); 3320 fallthrough; 3321 case ixgbe_mac_X540: 3322 case ixgbe_mac_X550: 3323 case ixgbe_mac_X550EM_x: 3324 case ixgbe_mac_x550em_a: 3325 if (eicr & IXGBE_EICR_ECC) { 3326 e_info(link, "Received ECC Err, initiating reset\n"); 3327 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 3328 ixgbe_service_event_schedule(adapter); 3329 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); 3330 } 3331 ixgbe_check_overtemp_event(adapter, eicr); 3332 break; 3333 default: 3334 break; 3335 } 3336 3337 ixgbe_check_fan_failure(adapter, eicr); 3338 if (unlikely(eicr & IXGBE_EICR_TIMESYNC)) 3339 ixgbe_ptp_check_pps_event(adapter); 3340 3341 /* would disable interrupts here but EIAM disabled it */ 3342 napi_schedule_irqoff(&q_vector->napi); 3343 3344 /* 3345 * re-enable link(maybe) and non-queue interrupts, no flush. 3346 * ixgbe_poll will re-enable the queue interrupts 3347 */ 3348 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3349 ixgbe_irq_enable(adapter, false, false); 3350 3351 return IRQ_HANDLED; 3352 } 3353 3354 /** 3355 * ixgbe_request_irq - initialize interrupts 3356 * @adapter: board private structure 3357 * 3358 * Attempts to configure interrupts using the best available 3359 * capabilities of the hardware and kernel. 3360 **/ 3361 static int ixgbe_request_irq(struct ixgbe_adapter *adapter) 3362 { 3363 struct net_device *netdev = adapter->netdev; 3364 int err; 3365 3366 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) 3367 err = ixgbe_request_msix_irqs(adapter); 3368 else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) 3369 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0, 3370 netdev->name, adapter); 3371 else 3372 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED, 3373 netdev->name, adapter); 3374 3375 if (err) 3376 e_err(probe, "request_irq failed, Error %d\n", err); 3377 3378 return err; 3379 } 3380 3381 static void ixgbe_free_irq(struct ixgbe_adapter *adapter) 3382 { 3383 int vector; 3384 3385 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { 3386 free_irq(adapter->pdev->irq, adapter); 3387 return; 3388 } 3389 3390 if (!adapter->msix_entries) 3391 return; 3392 3393 for (vector = 0; vector < adapter->num_q_vectors; vector++) { 3394 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector]; 3395 struct msix_entry *entry = &adapter->msix_entries[vector]; 3396 3397 /* free only the irqs that were actually requested */ 3398 if (!q_vector->rx.ring && !q_vector->tx.ring) 3399 continue; 3400 3401 /* clear the affinity_mask in the IRQ descriptor */ 3402 irq_update_affinity_hint(entry->vector, NULL); 3403 3404 free_irq(entry->vector, q_vector); 3405 } 3406 3407 free_irq(adapter->msix_entries[vector].vector, adapter); 3408 } 3409 3410 /** 3411 * ixgbe_irq_disable - Mask off interrupt generation on the NIC 3412 * @adapter: board private structure 3413 **/ 3414 static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) 3415 { 3416 switch (adapter->hw.mac.type) { 3417 case ixgbe_mac_82598EB: 3418 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); 3419 break; 3420 case ixgbe_mac_82599EB: 3421 case ixgbe_mac_X540: 3422 case ixgbe_mac_X550: 3423 case ixgbe_mac_X550EM_x: 3424 case ixgbe_mac_x550em_a: 3425 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000); 3426 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0); 3427 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0); 3428 break; 3429 default: 3430 break; 3431 } 3432 IXGBE_WRITE_FLUSH(&adapter->hw); 3433 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { 3434 int vector; 3435 3436 for (vector = 0; vector < adapter->num_q_vectors; vector++) 3437 synchronize_irq(adapter->msix_entries[vector].vector); 3438 3439 synchronize_irq(adapter->msix_entries[vector++].vector); 3440 } else { 3441 synchronize_irq(adapter->pdev->irq); 3442 } 3443 } 3444 3445 /** 3446 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts 3447 * @adapter: board private structure 3448 * 3449 **/ 3450 static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) 3451 { 3452 struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; 3453 3454 ixgbe_write_eitr(q_vector); 3455 3456 ixgbe_set_ivar(adapter, 0, 0, 0); 3457 ixgbe_set_ivar(adapter, 1, 0, 0); 3458 3459 e_info(hw, "Legacy interrupt IVAR setup done\n"); 3460 } 3461 3462 /** 3463 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset 3464 * @adapter: board private structure 3465 * @ring: structure containing ring specific data 3466 * 3467 * Configure the Tx descriptor ring after a reset. 3468 **/ 3469 void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter, 3470 struct ixgbe_ring *ring) 3471 { 3472 struct ixgbe_hw *hw = &adapter->hw; 3473 u64 tdba = ring->dma; 3474 int wait_loop = 10; 3475 u32 txdctl = IXGBE_TXDCTL_ENABLE; 3476 u8 reg_idx = ring->reg_idx; 3477 3478 ring->xsk_pool = NULL; 3479 if (ring_is_xdp(ring)) 3480 ring->xsk_pool = ixgbe_xsk_pool(adapter, ring); 3481 3482 /* disable queue to avoid issues while updating state */ 3483 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), 0); 3484 IXGBE_WRITE_FLUSH(hw); 3485 3486 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx), 3487 (tdba & DMA_BIT_MASK(32))); 3488 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32)); 3489 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx), 3490 ring->count * sizeof(union ixgbe_adv_tx_desc)); 3491 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0); 3492 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0); 3493 ring->tail = adapter->io_addr + IXGBE_TDT(reg_idx); 3494 3495 /* 3496 * set WTHRESH to encourage burst writeback, it should not be set 3497 * higher than 1 when: 3498 * - ITR is 0 as it could cause false TX hangs 3499 * - ITR is set to > 100k int/sec and BQL is enabled 3500 * 3501 * In order to avoid issues WTHRESH + PTHRESH should always be equal 3502 * to or less than the number of on chip descriptors, which is 3503 * currently 40. 3504 */ 3505 if (!ring->q_vector || (ring->q_vector->itr < IXGBE_100K_ITR)) 3506 txdctl |= 1u << 16; /* WTHRESH = 1 */ 3507 else 3508 txdctl |= 8u << 16; /* WTHRESH = 8 */ 3509 3510 /* 3511 * Setting PTHRESH to 32 both improves performance 3512 * and avoids a TX hang with DFP enabled 3513 */ 3514 txdctl |= (1u << 8) | /* HTHRESH = 1 */ 3515 32; /* PTHRESH = 32 */ 3516 3517 /* reinitialize flowdirector state */ 3518 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 3519 ring->atr_sample_rate = adapter->atr_sample_rate; 3520 ring->atr_count = 0; 3521 set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state); 3522 } else { 3523 ring->atr_sample_rate = 0; 3524 } 3525 3526 /* initialize XPS */ 3527 if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE, &ring->state)) { 3528 struct ixgbe_q_vector *q_vector = ring->q_vector; 3529 3530 if (q_vector) 3531 netif_set_xps_queue(ring->netdev, 3532 &q_vector->affinity_mask, 3533 ring->queue_index); 3534 } 3535 3536 clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state); 3537 3538 /* reinitialize tx_buffer_info */ 3539 memset(ring->tx_buffer_info, 0, 3540 sizeof(struct ixgbe_tx_buffer) * ring->count); 3541 3542 /* enable queue */ 3543 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl); 3544 3545 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */ 3546 if (hw->mac.type == ixgbe_mac_82598EB && 3547 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 3548 return; 3549 3550 /* poll to verify queue is enabled */ 3551 do { 3552 usleep_range(1000, 2000); 3553 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 3554 } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE)); 3555 if (!wait_loop) 3556 hw_dbg(hw, "Could not enable Tx Queue %d\n", reg_idx); 3557 } 3558 3559 static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter) 3560 { 3561 struct ixgbe_hw *hw = &adapter->hw; 3562 u32 rttdcs, mtqc; 3563 u8 tcs = adapter->hw_tcs; 3564 3565 if (hw->mac.type == ixgbe_mac_82598EB) 3566 return; 3567 3568 /* disable the arbiter while setting MTQC */ 3569 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS); 3570 rttdcs |= IXGBE_RTTDCS_ARBDIS; 3571 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); 3572 3573 /* set transmit pool layout */ 3574 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 3575 mtqc = IXGBE_MTQC_VT_ENA; 3576 if (tcs > 4) 3577 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; 3578 else if (tcs > 1) 3579 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; 3580 else if (adapter->ring_feature[RING_F_VMDQ].mask == 3581 IXGBE_82599_VMDQ_4Q_MASK) 3582 mtqc |= IXGBE_MTQC_32VF; 3583 else 3584 mtqc |= IXGBE_MTQC_64VF; 3585 } else { 3586 if (tcs > 4) { 3587 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; 3588 } else if (tcs > 1) { 3589 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; 3590 } else { 3591 u8 max_txq = adapter->num_tx_queues + 3592 adapter->num_xdp_queues; 3593 if (max_txq > 63) 3594 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; 3595 else 3596 mtqc = IXGBE_MTQC_64Q_1PB; 3597 } 3598 } 3599 3600 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc); 3601 3602 /* Enable Security TX Buffer IFG for multiple pb */ 3603 if (tcs) { 3604 u32 sectx = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG); 3605 sectx |= IXGBE_SECTX_DCB; 3606 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, sectx); 3607 } 3608 3609 /* re-enable the arbiter */ 3610 rttdcs &= ~IXGBE_RTTDCS_ARBDIS; 3611 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); 3612 } 3613 3614 /** 3615 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset 3616 * @adapter: board private structure 3617 * 3618 * Configure the Tx unit of the MAC after a reset. 3619 **/ 3620 static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) 3621 { 3622 struct ixgbe_hw *hw = &adapter->hw; 3623 u32 dmatxctl; 3624 u32 i; 3625 3626 ixgbe_setup_mtqc(adapter); 3627 3628 if (hw->mac.type != ixgbe_mac_82598EB) { 3629 /* DMATXCTL.EN must be before Tx queues are enabled */ 3630 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL); 3631 dmatxctl |= IXGBE_DMATXCTL_TE; 3632 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl); 3633 } 3634 3635 /* Setup the HW Tx Head and Tail descriptor pointers */ 3636 for (i = 0; i < adapter->num_tx_queues; i++) 3637 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]); 3638 for (i = 0; i < adapter->num_xdp_queues; i++) 3639 ixgbe_configure_tx_ring(adapter, adapter->xdp_ring[i]); 3640 } 3641 3642 static void ixgbe_enable_rx_drop(struct ixgbe_adapter *adapter, 3643 struct ixgbe_ring *ring) 3644 { 3645 struct ixgbe_hw *hw = &adapter->hw; 3646 u8 reg_idx = ring->reg_idx; 3647 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx)); 3648 3649 srrctl |= IXGBE_SRRCTL_DROP_EN; 3650 3651 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 3652 } 3653 3654 static void ixgbe_disable_rx_drop(struct ixgbe_adapter *adapter, 3655 struct ixgbe_ring *ring) 3656 { 3657 struct ixgbe_hw *hw = &adapter->hw; 3658 u8 reg_idx = ring->reg_idx; 3659 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx)); 3660 3661 srrctl &= ~IXGBE_SRRCTL_DROP_EN; 3662 3663 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 3664 } 3665 3666 #ifdef CONFIG_IXGBE_DCB 3667 void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter) 3668 #else 3669 static void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter) 3670 #endif 3671 { 3672 int i; 3673 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 3674 3675 if (adapter->ixgbe_ieee_pfc) 3676 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 3677 3678 /* 3679 * We should set the drop enable bit if: 3680 * SR-IOV is enabled 3681 * or 3682 * Number of Rx queues > 1 and flow control is disabled 3683 * 3684 * This allows us to avoid head of line blocking for security 3685 * and performance reasons. 3686 */ 3687 if (adapter->num_vfs || (adapter->num_rx_queues > 1 && 3688 !(adapter->hw.fc.current_mode & ixgbe_fc_tx_pause) && !pfc_en)) { 3689 for (i = 0; i < adapter->num_rx_queues; i++) 3690 ixgbe_enable_rx_drop(adapter, adapter->rx_ring[i]); 3691 } else { 3692 for (i = 0; i < adapter->num_rx_queues; i++) 3693 ixgbe_disable_rx_drop(adapter, adapter->rx_ring[i]); 3694 } 3695 } 3696 3697 #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 3698 3699 static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, 3700 struct ixgbe_ring *rx_ring) 3701 { 3702 struct ixgbe_hw *hw = &adapter->hw; 3703 u32 srrctl; 3704 u8 reg_idx = rx_ring->reg_idx; 3705 3706 if (hw->mac.type == ixgbe_mac_82598EB) { 3707 u16 mask = adapter->ring_feature[RING_F_RSS].mask; 3708 3709 /* 3710 * if VMDq is not active we must program one srrctl register 3711 * per RSS queue since we have enabled RDRXCTL.MVMEN 3712 */ 3713 reg_idx &= mask; 3714 } 3715 3716 /* configure header buffer length, needed for RSC */ 3717 srrctl = IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT; 3718 3719 /* configure the packet buffer length */ 3720 if (rx_ring->xsk_pool) { 3721 u32 xsk_buf_len = xsk_pool_get_rx_frame_size(rx_ring->xsk_pool); 3722 3723 /* If the MAC support setting RXDCTL.RLPML, the 3724 * SRRCTL[n].BSIZEPKT is set to PAGE_SIZE and 3725 * RXDCTL.RLPML is set to the actual UMEM buffer 3726 * size. If not, then we are stuck with a 1k buffer 3727 * size resolution. In this case frames larger than 3728 * the UMEM buffer size viewed in a 1k resolution will 3729 * be dropped. 3730 */ 3731 if (hw->mac.type != ixgbe_mac_82599EB) 3732 srrctl |= PAGE_SIZE >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 3733 else 3734 srrctl |= xsk_buf_len >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 3735 } else if (test_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state)) { 3736 srrctl |= IXGBE_RXBUFFER_3K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 3737 } else { 3738 srrctl |= IXGBE_RXBUFFER_2K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 3739 } 3740 3741 /* configure descriptor type */ 3742 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; 3743 3744 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 3745 } 3746 3747 /** 3748 * ixgbe_rss_indir_tbl_entries - Return RSS indirection table entries 3749 * @adapter: device handle 3750 * 3751 * - 82598/82599/X540: 128 3752 * - X550(non-SRIOV mode): 512 3753 * - X550(SRIOV mode): 64 3754 */ 3755 u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter) 3756 { 3757 if (adapter->hw.mac.type < ixgbe_mac_X550) 3758 return 128; 3759 else if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 3760 return 64; 3761 else 3762 return 512; 3763 } 3764 3765 /** 3766 * ixgbe_store_key - Write the RSS key to HW 3767 * @adapter: device handle 3768 * 3769 * Write the RSS key stored in adapter.rss_key to HW. 3770 */ 3771 void ixgbe_store_key(struct ixgbe_adapter *adapter) 3772 { 3773 struct ixgbe_hw *hw = &adapter->hw; 3774 int i; 3775 3776 for (i = 0; i < 10; i++) 3777 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), adapter->rss_key[i]); 3778 } 3779 3780 /** 3781 * ixgbe_init_rss_key - Initialize adapter RSS key 3782 * @adapter: device handle 3783 * 3784 * Allocates and initializes the RSS key if it is not allocated. 3785 **/ 3786 static inline int ixgbe_init_rss_key(struct ixgbe_adapter *adapter) 3787 { 3788 u32 *rss_key; 3789 3790 if (!adapter->rss_key) { 3791 rss_key = kzalloc(IXGBE_RSS_KEY_SIZE, GFP_KERNEL); 3792 if (unlikely(!rss_key)) 3793 return -ENOMEM; 3794 3795 netdev_rss_key_fill(rss_key, IXGBE_RSS_KEY_SIZE); 3796 adapter->rss_key = rss_key; 3797 } 3798 3799 return 0; 3800 } 3801 3802 /** 3803 * ixgbe_store_reta - Write the RETA table to HW 3804 * @adapter: device handle 3805 * 3806 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW. 3807 */ 3808 void ixgbe_store_reta(struct ixgbe_adapter *adapter) 3809 { 3810 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 3811 struct ixgbe_hw *hw = &adapter->hw; 3812 u32 reta = 0; 3813 u32 indices_multi; 3814 u8 *indir_tbl = adapter->rss_indir_tbl; 3815 3816 /* Fill out the redirection table as follows: 3817 * - 82598: 8 bit wide entries containing pair of 4 bit RSS 3818 * indices. 3819 * - 82599/X540: 8 bit wide entries containing 4 bit RSS index 3820 * - X550: 8 bit wide entries containing 6 bit RSS index 3821 */ 3822 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 3823 indices_multi = 0x11; 3824 else 3825 indices_multi = 0x1; 3826 3827 /* Write redirection table to HW */ 3828 for (i = 0; i < reta_entries; i++) { 3829 reta |= indices_multi * indir_tbl[i] << (i & 0x3) * 8; 3830 if ((i & 3) == 3) { 3831 if (i < 128) 3832 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); 3833 else 3834 IXGBE_WRITE_REG(hw, IXGBE_ERETA((i >> 2) - 32), 3835 reta); 3836 reta = 0; 3837 } 3838 } 3839 } 3840 3841 /** 3842 * ixgbe_store_vfreta - Write the RETA table to HW (x550 devices in SRIOV mode) 3843 * @adapter: device handle 3844 * 3845 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW. 3846 */ 3847 static void ixgbe_store_vfreta(struct ixgbe_adapter *adapter) 3848 { 3849 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 3850 struct ixgbe_hw *hw = &adapter->hw; 3851 u32 vfreta = 0; 3852 3853 /* Write redirection table to HW */ 3854 for (i = 0; i < reta_entries; i++) { 3855 u16 pool = adapter->num_rx_pools; 3856 3857 vfreta |= (u32)adapter->rss_indir_tbl[i] << (i & 0x3) * 8; 3858 if ((i & 3) != 3) 3859 continue; 3860 3861 while (pool--) 3862 IXGBE_WRITE_REG(hw, 3863 IXGBE_PFVFRETA(i >> 2, VMDQ_P(pool)), 3864 vfreta); 3865 vfreta = 0; 3866 } 3867 } 3868 3869 static void ixgbe_setup_reta(struct ixgbe_adapter *adapter) 3870 { 3871 u32 i, j; 3872 u32 reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 3873 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; 3874 3875 /* Program table for at least 4 queues w/ SR-IOV so that VFs can 3876 * make full use of any rings they may have. We will use the 3877 * PSRTYPE register to control how many rings we use within the PF. 3878 */ 3879 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && (rss_i < 4)) 3880 rss_i = 4; 3881 3882 /* Fill out hash function seeds */ 3883 ixgbe_store_key(adapter); 3884 3885 /* Fill out redirection table */ 3886 memset(adapter->rss_indir_tbl, 0, sizeof(adapter->rss_indir_tbl)); 3887 3888 for (i = 0, j = 0; i < reta_entries; i++, j++) { 3889 if (j == rss_i) 3890 j = 0; 3891 3892 adapter->rss_indir_tbl[i] = j; 3893 } 3894 3895 ixgbe_store_reta(adapter); 3896 } 3897 3898 static void ixgbe_setup_vfreta(struct ixgbe_adapter *adapter) 3899 { 3900 struct ixgbe_hw *hw = &adapter->hw; 3901 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; 3902 int i, j; 3903 3904 /* Fill out hash function seeds */ 3905 for (i = 0; i < 10; i++) { 3906 u16 pool = adapter->num_rx_pools; 3907 3908 while (pool--) 3909 IXGBE_WRITE_REG(hw, 3910 IXGBE_PFVFRSSRK(i, VMDQ_P(pool)), 3911 *(adapter->rss_key + i)); 3912 } 3913 3914 /* Fill out the redirection table */ 3915 for (i = 0, j = 0; i < 64; i++, j++) { 3916 if (j == rss_i) 3917 j = 0; 3918 3919 adapter->rss_indir_tbl[i] = j; 3920 } 3921 3922 ixgbe_store_vfreta(adapter); 3923 } 3924 3925 static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter) 3926 { 3927 struct ixgbe_hw *hw = &adapter->hw; 3928 u32 mrqc = 0, rss_field = 0, vfmrqc = 0; 3929 u32 rxcsum; 3930 3931 /* Disable indicating checksum in descriptor, enables RSS hash */ 3932 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); 3933 rxcsum |= IXGBE_RXCSUM_PCSD; 3934 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); 3935 3936 if (adapter->hw.mac.type == ixgbe_mac_82598EB) { 3937 if (adapter->ring_feature[RING_F_RSS].mask) 3938 mrqc = IXGBE_MRQC_RSSEN; 3939 } else { 3940 u8 tcs = adapter->hw_tcs; 3941 3942 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 3943 if (tcs > 4) 3944 mrqc = IXGBE_MRQC_VMDQRT8TCEN; /* 8 TCs */ 3945 else if (tcs > 1) 3946 mrqc = IXGBE_MRQC_VMDQRT4TCEN; /* 4 TCs */ 3947 else if (adapter->ring_feature[RING_F_VMDQ].mask == 3948 IXGBE_82599_VMDQ_4Q_MASK) 3949 mrqc = IXGBE_MRQC_VMDQRSS32EN; 3950 else 3951 mrqc = IXGBE_MRQC_VMDQRSS64EN; 3952 3953 /* Enable L3/L4 for Tx Switched packets only for X550, 3954 * older devices do not support this feature 3955 */ 3956 if (hw->mac.type >= ixgbe_mac_X550) 3957 mrqc |= IXGBE_MRQC_L3L4TXSWEN; 3958 } else { 3959 if (tcs > 4) 3960 mrqc = IXGBE_MRQC_RTRSS8TCEN; 3961 else if (tcs > 1) 3962 mrqc = IXGBE_MRQC_RTRSS4TCEN; 3963 else 3964 mrqc = IXGBE_MRQC_RSSEN; 3965 } 3966 } 3967 3968 /* Perform hash on these packet types */ 3969 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4 | 3970 IXGBE_MRQC_RSS_FIELD_IPV4_TCP | 3971 IXGBE_MRQC_RSS_FIELD_IPV6 | 3972 IXGBE_MRQC_RSS_FIELD_IPV6_TCP; 3973 3974 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV4_UDP) 3975 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP; 3976 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV6_UDP) 3977 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP; 3978 3979 if ((hw->mac.type >= ixgbe_mac_X550) && 3980 (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) { 3981 u16 pool = adapter->num_rx_pools; 3982 3983 /* Enable VF RSS mode */ 3984 mrqc |= IXGBE_MRQC_MULTIPLE_RSS; 3985 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); 3986 3987 /* Setup RSS through the VF registers */ 3988 ixgbe_setup_vfreta(adapter); 3989 vfmrqc = IXGBE_MRQC_RSSEN; 3990 vfmrqc |= rss_field; 3991 3992 while (pool--) 3993 IXGBE_WRITE_REG(hw, 3994 IXGBE_PFVFMRQC(VMDQ_P(pool)), 3995 vfmrqc); 3996 } else { 3997 ixgbe_setup_reta(adapter); 3998 mrqc |= rss_field; 3999 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); 4000 } 4001 } 4002 4003 /** 4004 * ixgbe_configure_rscctl - enable RSC for the indicated ring 4005 * @adapter: address of board private structure 4006 * @ring: structure containing ring specific data 4007 **/ 4008 static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter, 4009 struct ixgbe_ring *ring) 4010 { 4011 struct ixgbe_hw *hw = &adapter->hw; 4012 u32 rscctrl; 4013 u8 reg_idx = ring->reg_idx; 4014 4015 if (!ring_is_rsc_enabled(ring)) 4016 return; 4017 4018 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx)); 4019 rscctrl |= IXGBE_RSCCTL_RSCEN; 4020 /* 4021 * we must limit the number of descriptors so that the 4022 * total size of max desc * buf_len is not greater 4023 * than 65536 4024 */ 4025 rscctrl |= IXGBE_RSCCTL_MAXDESC_16; 4026 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl); 4027 } 4028 4029 #define IXGBE_MAX_RX_DESC_POLL 10 4030 static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter, 4031 struct ixgbe_ring *ring) 4032 { 4033 struct ixgbe_hw *hw = &adapter->hw; 4034 int wait_loop = IXGBE_MAX_RX_DESC_POLL; 4035 u32 rxdctl; 4036 u8 reg_idx = ring->reg_idx; 4037 4038 if (ixgbe_removed(hw->hw_addr)) 4039 return; 4040 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */ 4041 if (hw->mac.type == ixgbe_mac_82598EB && 4042 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 4043 return; 4044 4045 do { 4046 usleep_range(1000, 2000); 4047 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 4048 } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE)); 4049 4050 if (!wait_loop) { 4051 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within " 4052 "the polling period\n", reg_idx); 4053 } 4054 } 4055 4056 void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter, 4057 struct ixgbe_ring *ring) 4058 { 4059 struct ixgbe_hw *hw = &adapter->hw; 4060 union ixgbe_adv_rx_desc *rx_desc; 4061 u64 rdba = ring->dma; 4062 u32 rxdctl; 4063 u8 reg_idx = ring->reg_idx; 4064 4065 xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq); 4066 ring->xsk_pool = ixgbe_xsk_pool(adapter, ring); 4067 if (ring->xsk_pool) { 4068 WARN_ON(xdp_rxq_info_reg_mem_model(&ring->xdp_rxq, 4069 MEM_TYPE_XSK_BUFF_POOL, 4070 NULL)); 4071 xsk_pool_set_rxq_info(ring->xsk_pool, &ring->xdp_rxq); 4072 } else { 4073 WARN_ON(xdp_rxq_info_reg_mem_model(&ring->xdp_rxq, 4074 MEM_TYPE_PAGE_SHARED, NULL)); 4075 } 4076 4077 /* disable queue to avoid use of these values while updating state */ 4078 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 4079 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 4080 4081 /* write value back with RXDCTL.ENABLE bit cleared */ 4082 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 4083 IXGBE_WRITE_FLUSH(hw); 4084 4085 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32))); 4086 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32)); 4087 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx), 4088 ring->count * sizeof(union ixgbe_adv_rx_desc)); 4089 /* Force flushing of IXGBE_RDLEN to prevent MDD */ 4090 IXGBE_WRITE_FLUSH(hw); 4091 4092 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0); 4093 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0); 4094 ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx); 4095 4096 ixgbe_configure_srrctl(adapter, ring); 4097 ixgbe_configure_rscctl(adapter, ring); 4098 4099 if (hw->mac.type == ixgbe_mac_82598EB) { 4100 /* 4101 * enable cache line friendly hardware writes: 4102 * PTHRESH=32 descriptors (half the internal cache), 4103 * this also removes ugly rx_no_buffer_count increment 4104 * HTHRESH=4 descriptors (to minimize latency on fetch) 4105 * WTHRESH=8 burst writeback up to two cache lines 4106 */ 4107 rxdctl &= ~0x3FFFFF; 4108 rxdctl |= 0x080420; 4109 #if (PAGE_SIZE < 8192) 4110 /* RXDCTL.RLPML does not work on 82599 */ 4111 } else if (hw->mac.type != ixgbe_mac_82599EB) { 4112 rxdctl &= ~(IXGBE_RXDCTL_RLPMLMASK | 4113 IXGBE_RXDCTL_RLPML_EN); 4114 4115 /* Limit the maximum frame size so we don't overrun the skb. 4116 * This can happen in SRIOV mode when the MTU of the VF is 4117 * higher than the MTU of the PF. 4118 */ 4119 if (ring_uses_build_skb(ring) && 4120 !test_bit(__IXGBE_RX_3K_BUFFER, &ring->state)) 4121 rxdctl |= IXGBE_MAX_2K_FRAME_BUILD_SKB | 4122 IXGBE_RXDCTL_RLPML_EN; 4123 #endif 4124 } 4125 4126 ring->rx_offset = ixgbe_rx_offset(ring); 4127 4128 if (ring->xsk_pool && hw->mac.type != ixgbe_mac_82599EB) { 4129 u32 xsk_buf_len = xsk_pool_get_rx_frame_size(ring->xsk_pool); 4130 4131 rxdctl &= ~(IXGBE_RXDCTL_RLPMLMASK | 4132 IXGBE_RXDCTL_RLPML_EN); 4133 rxdctl |= xsk_buf_len | IXGBE_RXDCTL_RLPML_EN; 4134 4135 ring->rx_buf_len = xsk_buf_len; 4136 } 4137 4138 /* initialize rx_buffer_info */ 4139 memset(ring->rx_buffer_info, 0, 4140 sizeof(struct ixgbe_rx_buffer) * ring->count); 4141 4142 /* initialize Rx descriptor 0 */ 4143 rx_desc = IXGBE_RX_DESC(ring, 0); 4144 rx_desc->wb.upper.length = 0; 4145 4146 /* enable receive descriptor ring */ 4147 rxdctl |= IXGBE_RXDCTL_ENABLE; 4148 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 4149 4150 ixgbe_rx_desc_queue_enable(adapter, ring); 4151 if (ring->xsk_pool) 4152 ixgbe_alloc_rx_buffers_zc(ring, ixgbe_desc_unused(ring)); 4153 else 4154 ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring)); 4155 } 4156 4157 static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter) 4158 { 4159 struct ixgbe_hw *hw = &adapter->hw; 4160 int rss_i = adapter->ring_feature[RING_F_RSS].indices; 4161 u16 pool = adapter->num_rx_pools; 4162 4163 /* PSRTYPE must be initialized in non 82598 adapters */ 4164 u32 psrtype = IXGBE_PSRTYPE_TCPHDR | 4165 IXGBE_PSRTYPE_UDPHDR | 4166 IXGBE_PSRTYPE_IPV4HDR | 4167 IXGBE_PSRTYPE_L2HDR | 4168 IXGBE_PSRTYPE_IPV6HDR; 4169 4170 if (hw->mac.type == ixgbe_mac_82598EB) 4171 return; 4172 4173 if (rss_i > 3) 4174 psrtype |= 2u << 29; 4175 else if (rss_i > 1) 4176 psrtype |= 1u << 29; 4177 4178 while (pool--) 4179 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype); 4180 } 4181 4182 static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter) 4183 { 4184 struct ixgbe_hw *hw = &adapter->hw; 4185 u16 pool = adapter->num_rx_pools; 4186 u32 reg_offset, vf_shift, vmolr; 4187 u32 gcr_ext, vmdctl; 4188 int i; 4189 4190 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 4191 return; 4192 4193 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 4194 vmdctl |= IXGBE_VMD_CTL_VMDQ_EN; 4195 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 4196 vmdctl |= VMDQ_P(0) << IXGBE_VT_CTL_POOL_SHIFT; 4197 vmdctl |= IXGBE_VT_CTL_REPLEN; 4198 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 4199 4200 /* accept untagged packets until a vlan tag is 4201 * specifically set for the VMDQ queue/pool 4202 */ 4203 vmolr = IXGBE_VMOLR_AUPE; 4204 while (pool--) 4205 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(pool)), vmolr); 4206 4207 vf_shift = VMDQ_P(0) % 32; 4208 reg_offset = (VMDQ_P(0) >= 32) ? 1 : 0; 4209 4210 /* Enable only the PF's pool for Tx/Rx */ 4211 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), GENMASK(31, vf_shift)); 4212 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), reg_offset - 1); 4213 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), GENMASK(31, vf_shift)); 4214 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), reg_offset - 1); 4215 if (adapter->bridge_mode == BRIDGE_MODE_VEB) 4216 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 4217 4218 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */ 4219 hw->mac.ops.set_vmdq(hw, 0, VMDQ_P(0)); 4220 4221 /* clear VLAN promisc flag so VFTA will be updated if necessary */ 4222 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC; 4223 4224 /* 4225 * Set up VF register offsets for selected VT Mode, 4226 * i.e. 32 or 64 VFs for SR-IOV 4227 */ 4228 switch (adapter->ring_feature[RING_F_VMDQ].mask) { 4229 case IXGBE_82599_VMDQ_8Q_MASK: 4230 gcr_ext = IXGBE_GCR_EXT_VT_MODE_16; 4231 break; 4232 case IXGBE_82599_VMDQ_4Q_MASK: 4233 gcr_ext = IXGBE_GCR_EXT_VT_MODE_32; 4234 break; 4235 default: 4236 gcr_ext = IXGBE_GCR_EXT_VT_MODE_64; 4237 break; 4238 } 4239 4240 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext); 4241 4242 for (i = 0; i < adapter->num_vfs; i++) { 4243 /* configure spoof checking */ 4244 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, i, 4245 adapter->vfinfo[i].spoofchk_enabled); 4246 4247 /* Enable/Disable RSS query feature */ 4248 ixgbe_ndo_set_vf_rss_query_en(adapter->netdev, i, 4249 adapter->vfinfo[i].rss_query_enabled); 4250 } 4251 } 4252 4253 static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter) 4254 { 4255 struct ixgbe_hw *hw = &adapter->hw; 4256 struct net_device *netdev = adapter->netdev; 4257 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; 4258 struct ixgbe_ring *rx_ring; 4259 int i; 4260 u32 mhadd, hlreg0; 4261 4262 #ifdef IXGBE_FCOE 4263 /* adjust max frame to be able to do baby jumbo for FCoE */ 4264 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) && 4265 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE)) 4266 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE; 4267 4268 #endif /* IXGBE_FCOE */ 4269 4270 /* adjust max frame to be at least the size of a standard frame */ 4271 if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) 4272 max_frame = (ETH_FRAME_LEN + ETH_FCS_LEN); 4273 4274 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); 4275 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { 4276 mhadd &= ~IXGBE_MHADD_MFS_MASK; 4277 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; 4278 4279 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); 4280 } 4281 4282 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); 4283 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */ 4284 hlreg0 |= IXGBE_HLREG0_JUMBOEN; 4285 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); 4286 4287 /* 4288 * Setup the HW Rx Head and Tail Descriptor Pointers and 4289 * the Base and Length of the Rx Descriptor Ring 4290 */ 4291 for (i = 0; i < adapter->num_rx_queues; i++) { 4292 rx_ring = adapter->rx_ring[i]; 4293 4294 clear_ring_rsc_enabled(rx_ring); 4295 clear_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4296 clear_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); 4297 4298 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 4299 set_ring_rsc_enabled(rx_ring); 4300 4301 if (test_bit(__IXGBE_RX_FCOE, &rx_ring->state)) 4302 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4303 4304 if (adapter->flags2 & IXGBE_FLAG2_RX_LEGACY) 4305 continue; 4306 4307 set_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); 4308 4309 #if (PAGE_SIZE < 8192) 4310 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 4311 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4312 4313 if (IXGBE_2K_TOO_SMALL_WITH_PADDING || 4314 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 4315 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4316 #endif 4317 } 4318 } 4319 4320 static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter) 4321 { 4322 struct ixgbe_hw *hw = &adapter->hw; 4323 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); 4324 4325 switch (hw->mac.type) { 4326 case ixgbe_mac_82598EB: 4327 /* 4328 * For VMDq support of different descriptor types or 4329 * buffer sizes through the use of multiple SRRCTL 4330 * registers, RDRXCTL.MVMEN must be set to 1 4331 * 4332 * also, the manual doesn't mention it clearly but DCA hints 4333 * will only use queue 0's tags unless this bit is set. Side 4334 * effects of setting this bit are only that SRRCTL must be 4335 * fully programmed [0..15] 4336 */ 4337 rdrxctl |= IXGBE_RDRXCTL_MVMEN; 4338 break; 4339 case ixgbe_mac_X550: 4340 case ixgbe_mac_X550EM_x: 4341 case ixgbe_mac_x550em_a: 4342 if (adapter->num_vfs) 4343 rdrxctl |= IXGBE_RDRXCTL_PSP; 4344 fallthrough; 4345 case ixgbe_mac_82599EB: 4346 case ixgbe_mac_X540: 4347 /* Disable RSC for ACK packets */ 4348 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU, 4349 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU))); 4350 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE; 4351 /* hardware requires some bits to be set by default */ 4352 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX); 4353 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP; 4354 break; 4355 default: 4356 /* We should do nothing since we don't know this hardware */ 4357 return; 4358 } 4359 4360 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); 4361 } 4362 4363 /** 4364 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset 4365 * @adapter: board private structure 4366 * 4367 * Configure the Rx unit of the MAC after a reset. 4368 **/ 4369 static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) 4370 { 4371 struct ixgbe_hw *hw = &adapter->hw; 4372 int i; 4373 u32 rxctrl, rfctl; 4374 4375 /* disable receives while setting up the descriptors */ 4376 hw->mac.ops.disable_rx(hw); 4377 4378 ixgbe_setup_psrtype(adapter); 4379 ixgbe_setup_rdrxctl(adapter); 4380 4381 /* RSC Setup */ 4382 rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL); 4383 rfctl &= ~IXGBE_RFCTL_RSC_DIS; 4384 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) 4385 rfctl |= IXGBE_RFCTL_RSC_DIS; 4386 4387 /* disable NFS filtering */ 4388 rfctl |= (IXGBE_RFCTL_NFSW_DIS | IXGBE_RFCTL_NFSR_DIS); 4389 IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl); 4390 4391 /* Program registers for the distribution of queues */ 4392 ixgbe_setup_mrqc(adapter); 4393 4394 /* set_rx_buffer_len must be called before ring initialization */ 4395 ixgbe_set_rx_buffer_len(adapter); 4396 4397 /* 4398 * Setup the HW Rx Head and Tail Descriptor Pointers and 4399 * the Base and Length of the Rx Descriptor Ring 4400 */ 4401 for (i = 0; i < adapter->num_rx_queues; i++) 4402 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]); 4403 4404 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); 4405 /* disable drop enable for 82598 parts */ 4406 if (hw->mac.type == ixgbe_mac_82598EB) 4407 rxctrl |= IXGBE_RXCTRL_DMBYPS; 4408 4409 /* enable all receives */ 4410 rxctrl |= IXGBE_RXCTRL_RXEN; 4411 hw->mac.ops.enable_rx_dma(hw, rxctrl); 4412 } 4413 4414 static int ixgbe_vlan_rx_add_vid(struct net_device *netdev, 4415 __be16 proto, u16 vid) 4416 { 4417 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4418 struct ixgbe_hw *hw = &adapter->hw; 4419 4420 /* add VID to filter table */ 4421 if (!vid || !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4422 hw->mac.ops.set_vfta(&adapter->hw, vid, VMDQ_P(0), true, !!vid); 4423 4424 set_bit(vid, adapter->active_vlans); 4425 4426 return 0; 4427 } 4428 4429 static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan) 4430 { 4431 u32 vlvf; 4432 int idx; 4433 4434 /* short cut the special case */ 4435 if (vlan == 0) 4436 return 0; 4437 4438 /* Search for the vlan id in the VLVF entries */ 4439 for (idx = IXGBE_VLVF_ENTRIES; --idx;) { 4440 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(idx)); 4441 if ((vlvf & VLAN_VID_MASK) == vlan) 4442 break; 4443 } 4444 4445 return idx; 4446 } 4447 4448 void ixgbe_update_pf_promisc_vlvf(struct ixgbe_adapter *adapter, u32 vid) 4449 { 4450 struct ixgbe_hw *hw = &adapter->hw; 4451 u32 bits, word; 4452 int idx; 4453 4454 idx = ixgbe_find_vlvf_entry(hw, vid); 4455 if (!idx) 4456 return; 4457 4458 /* See if any other pools are set for this VLAN filter 4459 * entry other than the PF. 4460 */ 4461 word = idx * 2 + (VMDQ_P(0) / 32); 4462 bits = ~BIT(VMDQ_P(0) % 32); 4463 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 4464 4465 /* Disable the filter so this falls into the default pool. */ 4466 if (!bits && !IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1))) { 4467 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4468 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), 0); 4469 IXGBE_WRITE_REG(hw, IXGBE_VLVF(idx), 0); 4470 } 4471 } 4472 4473 static int ixgbe_vlan_rx_kill_vid(struct net_device *netdev, 4474 __be16 proto, u16 vid) 4475 { 4476 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4477 struct ixgbe_hw *hw = &adapter->hw; 4478 4479 /* remove VID from filter table */ 4480 if (vid && !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4481 hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), false, true); 4482 4483 clear_bit(vid, adapter->active_vlans); 4484 4485 return 0; 4486 } 4487 4488 /** 4489 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping 4490 * @adapter: driver data 4491 */ 4492 static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter) 4493 { 4494 struct ixgbe_hw *hw = &adapter->hw; 4495 u32 vlnctrl; 4496 int i, j; 4497 4498 switch (hw->mac.type) { 4499 case ixgbe_mac_82598EB: 4500 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4501 vlnctrl &= ~IXGBE_VLNCTRL_VME; 4502 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4503 break; 4504 case ixgbe_mac_82599EB: 4505 case ixgbe_mac_X540: 4506 case ixgbe_mac_X550: 4507 case ixgbe_mac_X550EM_x: 4508 case ixgbe_mac_x550em_a: 4509 for (i = 0; i < adapter->num_rx_queues; i++) { 4510 struct ixgbe_ring *ring = adapter->rx_ring[i]; 4511 4512 if (!netif_is_ixgbe(ring->netdev)) 4513 continue; 4514 4515 j = ring->reg_idx; 4516 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); 4517 vlnctrl &= ~IXGBE_RXDCTL_VME; 4518 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); 4519 } 4520 break; 4521 default: 4522 break; 4523 } 4524 } 4525 4526 /** 4527 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping 4528 * @adapter: driver data 4529 */ 4530 static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter) 4531 { 4532 struct ixgbe_hw *hw = &adapter->hw; 4533 u32 vlnctrl; 4534 int i, j; 4535 4536 switch (hw->mac.type) { 4537 case ixgbe_mac_82598EB: 4538 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4539 vlnctrl |= IXGBE_VLNCTRL_VME; 4540 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4541 break; 4542 case ixgbe_mac_82599EB: 4543 case ixgbe_mac_X540: 4544 case ixgbe_mac_X550: 4545 case ixgbe_mac_X550EM_x: 4546 case ixgbe_mac_x550em_a: 4547 for (i = 0; i < adapter->num_rx_queues; i++) { 4548 struct ixgbe_ring *ring = adapter->rx_ring[i]; 4549 4550 if (!netif_is_ixgbe(ring->netdev)) 4551 continue; 4552 4553 j = ring->reg_idx; 4554 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); 4555 vlnctrl |= IXGBE_RXDCTL_VME; 4556 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); 4557 } 4558 break; 4559 default: 4560 break; 4561 } 4562 } 4563 4564 static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter) 4565 { 4566 struct ixgbe_hw *hw = &adapter->hw; 4567 u32 vlnctrl, i; 4568 4569 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4570 4571 if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) { 4572 /* For VMDq and SR-IOV we must leave VLAN filtering enabled */ 4573 vlnctrl |= IXGBE_VLNCTRL_VFE; 4574 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4575 } else { 4576 vlnctrl &= ~IXGBE_VLNCTRL_VFE; 4577 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4578 return; 4579 } 4580 4581 /* Nothing to do for 82598 */ 4582 if (hw->mac.type == ixgbe_mac_82598EB) 4583 return; 4584 4585 /* We are already in VLAN promisc, nothing to do */ 4586 if (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC) 4587 return; 4588 4589 /* Set flag so we don't redo unnecessary work */ 4590 adapter->flags2 |= IXGBE_FLAG2_VLAN_PROMISC; 4591 4592 /* Add PF to all active pools */ 4593 for (i = IXGBE_VLVF_ENTRIES; --i;) { 4594 u32 reg_offset = IXGBE_VLVFB(i * 2 + VMDQ_P(0) / 32); 4595 u32 vlvfb = IXGBE_READ_REG(hw, reg_offset); 4596 4597 vlvfb |= BIT(VMDQ_P(0) % 32); 4598 IXGBE_WRITE_REG(hw, reg_offset, vlvfb); 4599 } 4600 4601 /* Set all bits in the VLAN filter table array */ 4602 for (i = hw->mac.vft_size; i--;) 4603 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), ~0U); 4604 } 4605 4606 #define VFTA_BLOCK_SIZE 8 4607 static void ixgbe_scrub_vfta(struct ixgbe_adapter *adapter, u32 vfta_offset) 4608 { 4609 struct ixgbe_hw *hw = &adapter->hw; 4610 u32 vfta[VFTA_BLOCK_SIZE] = { 0 }; 4611 u32 vid_start = vfta_offset * 32; 4612 u32 vid_end = vid_start + (VFTA_BLOCK_SIZE * 32); 4613 u32 i, vid, word, bits; 4614 4615 for (i = IXGBE_VLVF_ENTRIES; --i;) { 4616 u32 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); 4617 4618 /* pull VLAN ID from VLVF */ 4619 vid = vlvf & VLAN_VID_MASK; 4620 4621 /* only concern outselves with a certain range */ 4622 if (vid < vid_start || vid >= vid_end) 4623 continue; 4624 4625 if (vlvf) { 4626 /* record VLAN ID in VFTA */ 4627 vfta[(vid - vid_start) / 32] |= BIT(vid % 32); 4628 4629 /* if PF is part of this then continue */ 4630 if (test_bit(vid, adapter->active_vlans)) 4631 continue; 4632 } 4633 4634 /* remove PF from the pool */ 4635 word = i * 2 + VMDQ_P(0) / 32; 4636 bits = ~BIT(VMDQ_P(0) % 32); 4637 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 4638 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), bits); 4639 } 4640 4641 /* extract values from active_vlans and write back to VFTA */ 4642 for (i = VFTA_BLOCK_SIZE; i--;) { 4643 vid = (vfta_offset + i) * 32; 4644 word = vid / BITS_PER_LONG; 4645 bits = vid % BITS_PER_LONG; 4646 4647 vfta[i] |= adapter->active_vlans[word] >> bits; 4648 4649 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vfta_offset + i), vfta[i]); 4650 } 4651 } 4652 4653 static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter *adapter) 4654 { 4655 struct ixgbe_hw *hw = &adapter->hw; 4656 u32 vlnctrl, i; 4657 4658 /* Set VLAN filtering to enabled */ 4659 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4660 vlnctrl |= IXGBE_VLNCTRL_VFE; 4661 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4662 4663 if (!(adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) || 4664 hw->mac.type == ixgbe_mac_82598EB) 4665 return; 4666 4667 /* We are not in VLAN promisc, nothing to do */ 4668 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4669 return; 4670 4671 /* Set flag so we don't redo unnecessary work */ 4672 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC; 4673 4674 for (i = 0; i < hw->mac.vft_size; i += VFTA_BLOCK_SIZE) 4675 ixgbe_scrub_vfta(adapter, i); 4676 } 4677 4678 static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) 4679 { 4680 u16 vid = 1; 4681 4682 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0); 4683 4684 for_each_set_bit_from(vid, adapter->active_vlans, VLAN_N_VID) 4685 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); 4686 } 4687 4688 /** 4689 * ixgbe_write_mc_addr_list - write multicast addresses to MTA 4690 * @netdev: network interface device structure 4691 * 4692 * Writes multicast address list to the MTA hash table. 4693 * Returns: -ENOMEM on failure 4694 * 0 on no addresses written 4695 * X on writing X addresses to MTA 4696 **/ 4697 static int ixgbe_write_mc_addr_list(struct net_device *netdev) 4698 { 4699 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4700 struct ixgbe_hw *hw = &adapter->hw; 4701 4702 if (!netif_running(netdev)) 4703 return 0; 4704 4705 if (hw->mac.ops.update_mc_addr_list) 4706 hw->mac.ops.update_mc_addr_list(hw, netdev); 4707 else 4708 return -ENOMEM; 4709 4710 #ifdef CONFIG_PCI_IOV 4711 ixgbe_restore_vf_multicasts(adapter); 4712 #endif 4713 4714 return netdev_mc_count(netdev); 4715 } 4716 4717 #ifdef CONFIG_PCI_IOV 4718 void ixgbe_full_sync_mac_table(struct ixgbe_adapter *adapter) 4719 { 4720 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4721 struct ixgbe_hw *hw = &adapter->hw; 4722 int i; 4723 4724 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4725 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED; 4726 4727 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 4728 hw->mac.ops.set_rar(hw, i, 4729 mac_table->addr, 4730 mac_table->pool, 4731 IXGBE_RAH_AV); 4732 else 4733 hw->mac.ops.clear_rar(hw, i); 4734 } 4735 } 4736 4737 #endif 4738 static void ixgbe_sync_mac_table(struct ixgbe_adapter *adapter) 4739 { 4740 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4741 struct ixgbe_hw *hw = &adapter->hw; 4742 int i; 4743 4744 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4745 if (!(mac_table->state & IXGBE_MAC_STATE_MODIFIED)) 4746 continue; 4747 4748 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED; 4749 4750 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 4751 hw->mac.ops.set_rar(hw, i, 4752 mac_table->addr, 4753 mac_table->pool, 4754 IXGBE_RAH_AV); 4755 else 4756 hw->mac.ops.clear_rar(hw, i); 4757 } 4758 } 4759 4760 static void ixgbe_flush_sw_mac_table(struct ixgbe_adapter *adapter) 4761 { 4762 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4763 struct ixgbe_hw *hw = &adapter->hw; 4764 int i; 4765 4766 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4767 mac_table->state |= IXGBE_MAC_STATE_MODIFIED; 4768 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE; 4769 } 4770 4771 ixgbe_sync_mac_table(adapter); 4772 } 4773 4774 static int ixgbe_available_rars(struct ixgbe_adapter *adapter, u16 pool) 4775 { 4776 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4777 struct ixgbe_hw *hw = &adapter->hw; 4778 int i, count = 0; 4779 4780 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4781 /* do not count default RAR as available */ 4782 if (mac_table->state & IXGBE_MAC_STATE_DEFAULT) 4783 continue; 4784 4785 /* only count unused and addresses that belong to us */ 4786 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) { 4787 if (mac_table->pool != pool) 4788 continue; 4789 } 4790 4791 count++; 4792 } 4793 4794 return count; 4795 } 4796 4797 /* this function destroys the first RAR entry */ 4798 static void ixgbe_mac_set_default_filter(struct ixgbe_adapter *adapter) 4799 { 4800 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4801 struct ixgbe_hw *hw = &adapter->hw; 4802 4803 memcpy(&mac_table->addr, hw->mac.addr, ETH_ALEN); 4804 mac_table->pool = VMDQ_P(0); 4805 4806 mac_table->state = IXGBE_MAC_STATE_DEFAULT | IXGBE_MAC_STATE_IN_USE; 4807 4808 hw->mac.ops.set_rar(hw, 0, mac_table->addr, mac_table->pool, 4809 IXGBE_RAH_AV); 4810 } 4811 4812 int ixgbe_add_mac_filter(struct ixgbe_adapter *adapter, 4813 const u8 *addr, u16 pool) 4814 { 4815 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4816 struct ixgbe_hw *hw = &adapter->hw; 4817 int i; 4818 4819 if (is_zero_ether_addr(addr)) 4820 return -EINVAL; 4821 4822 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4823 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 4824 continue; 4825 4826 ether_addr_copy(mac_table->addr, addr); 4827 mac_table->pool = pool; 4828 4829 mac_table->state |= IXGBE_MAC_STATE_MODIFIED | 4830 IXGBE_MAC_STATE_IN_USE; 4831 4832 ixgbe_sync_mac_table(adapter); 4833 4834 return i; 4835 } 4836 4837 return -ENOMEM; 4838 } 4839 4840 int ixgbe_del_mac_filter(struct ixgbe_adapter *adapter, 4841 const u8 *addr, u16 pool) 4842 { 4843 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 4844 struct ixgbe_hw *hw = &adapter->hw; 4845 int i; 4846 4847 if (is_zero_ether_addr(addr)) 4848 return -EINVAL; 4849 4850 /* search table for addr, if found clear IN_USE flag and sync */ 4851 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 4852 /* we can only delete an entry if it is in use */ 4853 if (!(mac_table->state & IXGBE_MAC_STATE_IN_USE)) 4854 continue; 4855 /* we only care about entries that belong to the given pool */ 4856 if (mac_table->pool != pool) 4857 continue; 4858 /* we only care about a specific MAC address */ 4859 if (!ether_addr_equal(addr, mac_table->addr)) 4860 continue; 4861 4862 mac_table->state |= IXGBE_MAC_STATE_MODIFIED; 4863 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE; 4864 4865 ixgbe_sync_mac_table(adapter); 4866 4867 return 0; 4868 } 4869 4870 return -ENOMEM; 4871 } 4872 4873 static int ixgbe_uc_sync(struct net_device *netdev, const unsigned char *addr) 4874 { 4875 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4876 int ret; 4877 4878 ret = ixgbe_add_mac_filter(adapter, addr, VMDQ_P(0)); 4879 4880 return min_t(int, ret, 0); 4881 } 4882 4883 static int ixgbe_uc_unsync(struct net_device *netdev, const unsigned char *addr) 4884 { 4885 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4886 4887 ixgbe_del_mac_filter(adapter, addr, VMDQ_P(0)); 4888 4889 return 0; 4890 } 4891 4892 /** 4893 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set 4894 * @netdev: network interface device structure 4895 * 4896 * The set_rx_method entry point is called whenever the unicast/multicast 4897 * address list or the network interface flags are updated. This routine is 4898 * responsible for configuring the hardware for proper unicast, multicast and 4899 * promiscuous mode. 4900 **/ 4901 void ixgbe_set_rx_mode(struct net_device *netdev) 4902 { 4903 struct ixgbe_adapter *adapter = netdev_priv(netdev); 4904 struct ixgbe_hw *hw = &adapter->hw; 4905 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE; 4906 netdev_features_t features = netdev->features; 4907 int count; 4908 4909 /* Check for Promiscuous and All Multicast modes */ 4910 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 4911 4912 /* set all bits that we expect to always be set */ 4913 fctrl &= ~IXGBE_FCTRL_SBP; /* disable store-bad-packets */ 4914 fctrl |= IXGBE_FCTRL_BAM; 4915 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */ 4916 fctrl |= IXGBE_FCTRL_PMCF; 4917 4918 /* clear the bits we are changing the status of */ 4919 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); 4920 if (netdev->flags & IFF_PROMISC) { 4921 hw->addr_ctrl.user_set_promisc = true; 4922 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); 4923 vmolr |= IXGBE_VMOLR_MPE; 4924 features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 4925 } else { 4926 if (netdev->flags & IFF_ALLMULTI) { 4927 fctrl |= IXGBE_FCTRL_MPE; 4928 vmolr |= IXGBE_VMOLR_MPE; 4929 } 4930 hw->addr_ctrl.user_set_promisc = false; 4931 } 4932 4933 /* 4934 * Write addresses to available RAR registers, if there is not 4935 * sufficient space to store all the addresses then enable 4936 * unicast promiscuous mode 4937 */ 4938 if (__dev_uc_sync(netdev, ixgbe_uc_sync, ixgbe_uc_unsync)) { 4939 fctrl |= IXGBE_FCTRL_UPE; 4940 vmolr |= IXGBE_VMOLR_ROPE; 4941 } 4942 4943 /* Write addresses to the MTA, if the attempt fails 4944 * then we should just turn on promiscuous mode so 4945 * that we can at least receive multicast traffic 4946 */ 4947 count = ixgbe_write_mc_addr_list(netdev); 4948 if (count < 0) { 4949 fctrl |= IXGBE_FCTRL_MPE; 4950 vmolr |= IXGBE_VMOLR_MPE; 4951 } else if (count) { 4952 vmolr |= IXGBE_VMOLR_ROMPE; 4953 } 4954 4955 if (hw->mac.type != ixgbe_mac_82598EB) { 4956 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(VMDQ_P(0))) & 4957 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE | 4958 IXGBE_VMOLR_ROPE); 4959 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(0)), vmolr); 4960 } 4961 4962 /* This is useful for sniffing bad packets. */ 4963 if (features & NETIF_F_RXALL) { 4964 /* UPE and MPE will be handled by normal PROMISC logic 4965 * in e1000e_set_rx_mode */ 4966 fctrl |= (IXGBE_FCTRL_SBP | /* Receive bad packets */ 4967 IXGBE_FCTRL_BAM | /* RX All Bcast Pkts */ 4968 IXGBE_FCTRL_PMCF); /* RX All MAC Ctrl Pkts */ 4969 4970 fctrl &= ~(IXGBE_FCTRL_DPF); 4971 /* NOTE: VLAN filtering is disabled by setting PROMISC */ 4972 } 4973 4974 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); 4975 4976 if (features & NETIF_F_HW_VLAN_CTAG_RX) 4977 ixgbe_vlan_strip_enable(adapter); 4978 else 4979 ixgbe_vlan_strip_disable(adapter); 4980 4981 if (features & NETIF_F_HW_VLAN_CTAG_FILTER) 4982 ixgbe_vlan_promisc_disable(adapter); 4983 else 4984 ixgbe_vlan_promisc_enable(adapter); 4985 } 4986 4987 static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter) 4988 { 4989 int q_idx; 4990 4991 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) 4992 napi_enable(&adapter->q_vector[q_idx]->napi); 4993 } 4994 4995 static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) 4996 { 4997 int q_idx; 4998 4999 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) 5000 napi_disable(&adapter->q_vector[q_idx]->napi); 5001 } 5002 5003 static int ixgbe_udp_tunnel_sync(struct net_device *dev, unsigned int table) 5004 { 5005 struct ixgbe_adapter *adapter = netdev_priv(dev); 5006 struct ixgbe_hw *hw = &adapter->hw; 5007 struct udp_tunnel_info ti; 5008 5009 udp_tunnel_nic_get_port(dev, table, 0, &ti); 5010 if (ti.type == UDP_TUNNEL_TYPE_VXLAN) 5011 adapter->vxlan_port = ti.port; 5012 else 5013 adapter->geneve_port = ti.port; 5014 5015 IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, 5016 ntohs(adapter->vxlan_port) | 5017 ntohs(adapter->geneve_port) << 5018 IXGBE_VXLANCTRL_GENEVE_UDPPORT_SHIFT); 5019 return 0; 5020 } 5021 5022 static const struct udp_tunnel_nic_info ixgbe_udp_tunnels_x550 = { 5023 .sync_table = ixgbe_udp_tunnel_sync, 5024 .flags = UDP_TUNNEL_NIC_INFO_IPV4_ONLY, 5025 .tables = { 5026 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, }, 5027 }, 5028 }; 5029 5030 static const struct udp_tunnel_nic_info ixgbe_udp_tunnels_x550em_a = { 5031 .sync_table = ixgbe_udp_tunnel_sync, 5032 .flags = UDP_TUNNEL_NIC_INFO_IPV4_ONLY, 5033 .tables = { 5034 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, }, 5035 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_GENEVE, }, 5036 }, 5037 }; 5038 5039 #ifdef CONFIG_IXGBE_DCB 5040 /** 5041 * ixgbe_configure_dcb - Configure DCB hardware 5042 * @adapter: ixgbe adapter struct 5043 * 5044 * This is called by the driver on open to configure the DCB hardware. 5045 * This is also called by the gennetlink interface when reconfiguring 5046 * the DCB state. 5047 */ 5048 static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter) 5049 { 5050 struct ixgbe_hw *hw = &adapter->hw; 5051 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN; 5052 5053 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) { 5054 if (hw->mac.type == ixgbe_mac_82598EB) 5055 netif_set_tso_max_size(adapter->netdev, 65536); 5056 return; 5057 } 5058 5059 if (hw->mac.type == ixgbe_mac_82598EB) 5060 netif_set_tso_max_size(adapter->netdev, 32768); 5061 5062 #ifdef IXGBE_FCOE 5063 if (adapter->netdev->features & NETIF_F_FCOE_MTU) 5064 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE); 5065 #endif 5066 5067 /* reconfigure the hardware */ 5068 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) { 5069 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, 5070 DCB_TX_CONFIG); 5071 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, 5072 DCB_RX_CONFIG); 5073 ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg); 5074 } else if (adapter->ixgbe_ieee_ets && adapter->ixgbe_ieee_pfc) { 5075 ixgbe_dcb_hw_ets(&adapter->hw, 5076 adapter->ixgbe_ieee_ets, 5077 max_frame); 5078 ixgbe_dcb_hw_pfc_config(&adapter->hw, 5079 adapter->ixgbe_ieee_pfc->pfc_en, 5080 adapter->ixgbe_ieee_ets->prio_tc); 5081 } 5082 5083 /* Enable RSS Hash per TC */ 5084 if (hw->mac.type != ixgbe_mac_82598EB) { 5085 u32 msb = 0; 5086 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices - 1; 5087 5088 while (rss_i) { 5089 msb++; 5090 rss_i >>= 1; 5091 } 5092 5093 /* write msb to all 8 TCs in one write */ 5094 IXGBE_WRITE_REG(hw, IXGBE_RQTC, msb * 0x11111111); 5095 } 5096 } 5097 #endif 5098 5099 /* Additional bittime to account for IXGBE framing */ 5100 #define IXGBE_ETH_FRAMING 20 5101 5102 /** 5103 * ixgbe_hpbthresh - calculate high water mark for flow control 5104 * 5105 * @adapter: board private structure to calculate for 5106 * @pb: packet buffer to calculate 5107 */ 5108 static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb) 5109 { 5110 struct ixgbe_hw *hw = &adapter->hw; 5111 struct net_device *dev = adapter->netdev; 5112 int link, tc, kb, marker; 5113 u32 dv_id, rx_pba; 5114 5115 /* Calculate max LAN frame size */ 5116 tc = link = dev->mtu + ETH_HLEN + ETH_FCS_LEN + IXGBE_ETH_FRAMING; 5117 5118 #ifdef IXGBE_FCOE 5119 /* FCoE traffic class uses FCOE jumbo frames */ 5120 if ((dev->features & NETIF_F_FCOE_MTU) && 5121 (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) && 5122 (pb == ixgbe_fcoe_get_tc(adapter))) 5123 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; 5124 #endif 5125 5126 /* Calculate delay value for device */ 5127 switch (hw->mac.type) { 5128 case ixgbe_mac_X540: 5129 case ixgbe_mac_X550: 5130 case ixgbe_mac_X550EM_x: 5131 case ixgbe_mac_x550em_a: 5132 dv_id = IXGBE_DV_X540(link, tc); 5133 break; 5134 default: 5135 dv_id = IXGBE_DV(link, tc); 5136 break; 5137 } 5138 5139 /* Loopback switch introduces additional latency */ 5140 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 5141 dv_id += IXGBE_B2BT(tc); 5142 5143 /* Delay value is calculated in bit times convert to KB */ 5144 kb = IXGBE_BT2KB(dv_id); 5145 rx_pba = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(pb)) >> 10; 5146 5147 marker = rx_pba - kb; 5148 5149 /* It is possible that the packet buffer is not large enough 5150 * to provide required headroom. In this case throw an error 5151 * to user and a do the best we can. 5152 */ 5153 if (marker < 0) { 5154 e_warn(drv, "Packet Buffer(%i) can not provide enough" 5155 "headroom to support flow control." 5156 "Decrease MTU or number of traffic classes\n", pb); 5157 marker = tc + 1; 5158 } 5159 5160 return marker; 5161 } 5162 5163 /** 5164 * ixgbe_lpbthresh - calculate low water mark for for flow control 5165 * 5166 * @adapter: board private structure to calculate for 5167 * @pb: packet buffer to calculate 5168 */ 5169 static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter, int pb) 5170 { 5171 struct ixgbe_hw *hw = &adapter->hw; 5172 struct net_device *dev = adapter->netdev; 5173 int tc; 5174 u32 dv_id; 5175 5176 /* Calculate max LAN frame size */ 5177 tc = dev->mtu + ETH_HLEN + ETH_FCS_LEN; 5178 5179 #ifdef IXGBE_FCOE 5180 /* FCoE traffic class uses FCOE jumbo frames */ 5181 if ((dev->features & NETIF_F_FCOE_MTU) && 5182 (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) && 5183 (pb == netdev_get_prio_tc_map(dev, adapter->fcoe.up))) 5184 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; 5185 #endif 5186 5187 /* Calculate delay value for device */ 5188 switch (hw->mac.type) { 5189 case ixgbe_mac_X540: 5190 case ixgbe_mac_X550: 5191 case ixgbe_mac_X550EM_x: 5192 case ixgbe_mac_x550em_a: 5193 dv_id = IXGBE_LOW_DV_X540(tc); 5194 break; 5195 default: 5196 dv_id = IXGBE_LOW_DV(tc); 5197 break; 5198 } 5199 5200 /* Delay value is calculated in bit times convert to KB */ 5201 return IXGBE_BT2KB(dv_id); 5202 } 5203 5204 /* 5205 * ixgbe_pbthresh_setup - calculate and setup high low water marks 5206 */ 5207 static void ixgbe_pbthresh_setup(struct ixgbe_adapter *adapter) 5208 { 5209 struct ixgbe_hw *hw = &adapter->hw; 5210 int num_tc = adapter->hw_tcs; 5211 int i; 5212 5213 if (!num_tc) 5214 num_tc = 1; 5215 5216 for (i = 0; i < num_tc; i++) { 5217 hw->fc.high_water[i] = ixgbe_hpbthresh(adapter, i); 5218 hw->fc.low_water[i] = ixgbe_lpbthresh(adapter, i); 5219 5220 /* Low water marks must not be larger than high water marks */ 5221 if (hw->fc.low_water[i] > hw->fc.high_water[i]) 5222 hw->fc.low_water[i] = 0; 5223 } 5224 5225 for (; i < MAX_TRAFFIC_CLASS; i++) 5226 hw->fc.high_water[i] = 0; 5227 } 5228 5229 static void ixgbe_configure_pb(struct ixgbe_adapter *adapter) 5230 { 5231 struct ixgbe_hw *hw = &adapter->hw; 5232 int hdrm; 5233 u8 tc = adapter->hw_tcs; 5234 5235 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE || 5236 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) 5237 hdrm = 32 << adapter->fdir_pballoc; 5238 else 5239 hdrm = 0; 5240 5241 hw->mac.ops.set_rxpba(hw, tc, hdrm, PBA_STRATEGY_EQUAL); 5242 ixgbe_pbthresh_setup(adapter); 5243 } 5244 5245 static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter) 5246 { 5247 struct ixgbe_hw *hw = &adapter->hw; 5248 struct hlist_node *node2; 5249 struct ixgbe_fdir_filter *filter; 5250 u8 queue; 5251 5252 spin_lock(&adapter->fdir_perfect_lock); 5253 5254 if (!hlist_empty(&adapter->fdir_filter_list)) 5255 ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask); 5256 5257 hlist_for_each_entry_safe(filter, node2, 5258 &adapter->fdir_filter_list, fdir_node) { 5259 if (filter->action == IXGBE_FDIR_DROP_QUEUE) { 5260 queue = IXGBE_FDIR_DROP_QUEUE; 5261 } else { 5262 u32 ring = ethtool_get_flow_spec_ring(filter->action); 5263 u8 vf = ethtool_get_flow_spec_ring_vf(filter->action); 5264 5265 if (!vf && (ring >= adapter->num_rx_queues)) { 5266 e_err(drv, "FDIR restore failed without VF, ring: %u\n", 5267 ring); 5268 continue; 5269 } else if (vf && 5270 ((vf > adapter->num_vfs) || 5271 ring >= adapter->num_rx_queues_per_pool)) { 5272 e_err(drv, "FDIR restore failed with VF, vf: %hhu, ring: %u\n", 5273 vf, ring); 5274 continue; 5275 } 5276 5277 /* Map the ring onto the absolute queue index */ 5278 if (!vf) 5279 queue = adapter->rx_ring[ring]->reg_idx; 5280 else 5281 queue = ((vf - 1) * 5282 adapter->num_rx_queues_per_pool) + ring; 5283 } 5284 5285 ixgbe_fdir_write_perfect_filter_82599(hw, 5286 &filter->filter, filter->sw_idx, queue); 5287 } 5288 5289 spin_unlock(&adapter->fdir_perfect_lock); 5290 } 5291 5292 /** 5293 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue 5294 * @rx_ring: ring to free buffers from 5295 **/ 5296 static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring) 5297 { 5298 u16 i = rx_ring->next_to_clean; 5299 struct ixgbe_rx_buffer *rx_buffer = &rx_ring->rx_buffer_info[i]; 5300 5301 if (rx_ring->xsk_pool) { 5302 ixgbe_xsk_clean_rx_ring(rx_ring); 5303 goto skip_free; 5304 } 5305 5306 /* Free all the Rx ring sk_buffs */ 5307 while (i != rx_ring->next_to_alloc) { 5308 if (rx_buffer->skb) { 5309 struct sk_buff *skb = rx_buffer->skb; 5310 if (IXGBE_CB(skb)->page_released) 5311 dma_unmap_page_attrs(rx_ring->dev, 5312 IXGBE_CB(skb)->dma, 5313 ixgbe_rx_pg_size(rx_ring), 5314 DMA_FROM_DEVICE, 5315 IXGBE_RX_DMA_ATTR); 5316 dev_kfree_skb(skb); 5317 } 5318 5319 /* Invalidate cache lines that may have been written to by 5320 * device so that we avoid corrupting memory. 5321 */ 5322 dma_sync_single_range_for_cpu(rx_ring->dev, 5323 rx_buffer->dma, 5324 rx_buffer->page_offset, 5325 ixgbe_rx_bufsz(rx_ring), 5326 DMA_FROM_DEVICE); 5327 5328 /* free resources associated with mapping */ 5329 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, 5330 ixgbe_rx_pg_size(rx_ring), 5331 DMA_FROM_DEVICE, 5332 IXGBE_RX_DMA_ATTR); 5333 __page_frag_cache_drain(rx_buffer->page, 5334 rx_buffer->pagecnt_bias); 5335 5336 i++; 5337 rx_buffer++; 5338 if (i == rx_ring->count) { 5339 i = 0; 5340 rx_buffer = rx_ring->rx_buffer_info; 5341 } 5342 } 5343 5344 skip_free: 5345 rx_ring->next_to_alloc = 0; 5346 rx_ring->next_to_clean = 0; 5347 rx_ring->next_to_use = 0; 5348 } 5349 5350 static int ixgbe_fwd_ring_up(struct ixgbe_adapter *adapter, 5351 struct ixgbe_fwd_adapter *accel) 5352 { 5353 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; 5354 int num_tc = netdev_get_num_tc(adapter->netdev); 5355 struct net_device *vdev = accel->netdev; 5356 int i, baseq, err; 5357 5358 baseq = accel->pool * adapter->num_rx_queues_per_pool; 5359 netdev_dbg(vdev, "pool %i:%i queues %i:%i\n", 5360 accel->pool, adapter->num_rx_pools, 5361 baseq, baseq + adapter->num_rx_queues_per_pool); 5362 5363 accel->rx_base_queue = baseq; 5364 accel->tx_base_queue = baseq; 5365 5366 /* record configuration for macvlan interface in vdev */ 5367 for (i = 0; i < num_tc; i++) 5368 netdev_bind_sb_channel_queue(adapter->netdev, vdev, 5369 i, rss_i, baseq + (rss_i * i)); 5370 5371 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) 5372 adapter->rx_ring[baseq + i]->netdev = vdev; 5373 5374 /* Guarantee all rings are updated before we update the 5375 * MAC address filter. 5376 */ 5377 wmb(); 5378 5379 /* ixgbe_add_mac_filter will return an index if it succeeds, so we 5380 * need to only treat it as an error value if it is negative. 5381 */ 5382 err = ixgbe_add_mac_filter(adapter, vdev->dev_addr, 5383 VMDQ_P(accel->pool)); 5384 if (err >= 0) 5385 return 0; 5386 5387 /* if we cannot add the MAC rule then disable the offload */ 5388 macvlan_release_l2fw_offload(vdev); 5389 5390 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) 5391 adapter->rx_ring[baseq + i]->netdev = NULL; 5392 5393 netdev_err(vdev, "L2FW offload disabled due to L2 filter error\n"); 5394 5395 /* unbind the queues and drop the subordinate channel config */ 5396 netdev_unbind_sb_channel(adapter->netdev, vdev); 5397 netdev_set_sb_channel(vdev, 0); 5398 5399 clear_bit(accel->pool, adapter->fwd_bitmask); 5400 kfree(accel); 5401 5402 return err; 5403 } 5404 5405 static int ixgbe_macvlan_up(struct net_device *vdev, 5406 struct netdev_nested_priv *priv) 5407 { 5408 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)priv->data; 5409 struct ixgbe_fwd_adapter *accel; 5410 5411 if (!netif_is_macvlan(vdev)) 5412 return 0; 5413 5414 accel = macvlan_accel_priv(vdev); 5415 if (!accel) 5416 return 0; 5417 5418 ixgbe_fwd_ring_up(adapter, accel); 5419 5420 return 0; 5421 } 5422 5423 static void ixgbe_configure_dfwd(struct ixgbe_adapter *adapter) 5424 { 5425 struct netdev_nested_priv priv = { 5426 .data = (void *)adapter, 5427 }; 5428 5429 netdev_walk_all_upper_dev_rcu(adapter->netdev, 5430 ixgbe_macvlan_up, &priv); 5431 } 5432 5433 static void ixgbe_configure(struct ixgbe_adapter *adapter) 5434 { 5435 struct ixgbe_hw *hw = &adapter->hw; 5436 5437 ixgbe_configure_pb(adapter); 5438 #ifdef CONFIG_IXGBE_DCB 5439 ixgbe_configure_dcb(adapter); 5440 #endif 5441 /* 5442 * We must restore virtualization before VLANs or else 5443 * the VLVF registers will not be populated 5444 */ 5445 ixgbe_configure_virtualization(adapter); 5446 5447 ixgbe_set_rx_mode(adapter->netdev); 5448 ixgbe_restore_vlan(adapter); 5449 ixgbe_ipsec_restore(adapter); 5450 5451 switch (hw->mac.type) { 5452 case ixgbe_mac_82599EB: 5453 case ixgbe_mac_X540: 5454 hw->mac.ops.disable_rx_buff(hw); 5455 break; 5456 default: 5457 break; 5458 } 5459 5460 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 5461 ixgbe_init_fdir_signature_82599(&adapter->hw, 5462 adapter->fdir_pballoc); 5463 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) { 5464 ixgbe_init_fdir_perfect_82599(&adapter->hw, 5465 adapter->fdir_pballoc); 5466 ixgbe_fdir_filter_restore(adapter); 5467 } 5468 5469 switch (hw->mac.type) { 5470 case ixgbe_mac_82599EB: 5471 case ixgbe_mac_X540: 5472 hw->mac.ops.enable_rx_buff(hw); 5473 break; 5474 default: 5475 break; 5476 } 5477 5478 #ifdef CONFIG_IXGBE_DCA 5479 /* configure DCA */ 5480 if (adapter->flags & IXGBE_FLAG_DCA_CAPABLE) 5481 ixgbe_setup_dca(adapter); 5482 #endif /* CONFIG_IXGBE_DCA */ 5483 5484 #ifdef IXGBE_FCOE 5485 /* configure FCoE L2 filters, redirection table, and Rx control */ 5486 ixgbe_configure_fcoe(adapter); 5487 5488 #endif /* IXGBE_FCOE */ 5489 ixgbe_configure_tx(adapter); 5490 ixgbe_configure_rx(adapter); 5491 ixgbe_configure_dfwd(adapter); 5492 } 5493 5494 /** 5495 * ixgbe_sfp_link_config - set up SFP+ link 5496 * @adapter: pointer to private adapter struct 5497 **/ 5498 static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter) 5499 { 5500 /* 5501 * We are assuming the worst case scenario here, and that 5502 * is that an SFP was inserted/removed after the reset 5503 * but before SFP detection was enabled. As such the best 5504 * solution is to just start searching as soon as we start 5505 */ 5506 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 5507 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; 5508 5509 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 5510 adapter->sfp_poll_time = 0; 5511 } 5512 5513 /** 5514 * ixgbe_non_sfp_link_config - set up non-SFP+ link 5515 * @hw: pointer to private hardware struct 5516 * 5517 * Returns 0 on success, negative on failure 5518 **/ 5519 static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw) 5520 { 5521 u32 speed; 5522 bool autoneg, link_up = false; 5523 int ret = IXGBE_ERR_LINK_SETUP; 5524 5525 if (hw->mac.ops.check_link) 5526 ret = hw->mac.ops.check_link(hw, &speed, &link_up, false); 5527 5528 if (ret) 5529 return ret; 5530 5531 speed = hw->phy.autoneg_advertised; 5532 if (!speed && hw->mac.ops.get_link_capabilities) { 5533 ret = hw->mac.ops.get_link_capabilities(hw, &speed, 5534 &autoneg); 5535 /* remove NBASE-T speeds from default autonegotiation 5536 * to accommodate broken network switches in the field 5537 * which cannot cope with advertised NBASE-T speeds 5538 */ 5539 speed &= ~(IXGBE_LINK_SPEED_5GB_FULL | 5540 IXGBE_LINK_SPEED_2_5GB_FULL); 5541 } 5542 5543 if (ret) 5544 return ret; 5545 5546 if (hw->mac.ops.setup_link) 5547 ret = hw->mac.ops.setup_link(hw, speed, link_up); 5548 5549 return ret; 5550 } 5551 5552 static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter) 5553 { 5554 struct ixgbe_hw *hw = &adapter->hw; 5555 u32 gpie = 0; 5556 5557 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { 5558 gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT | 5559 IXGBE_GPIE_OCD; 5560 gpie |= IXGBE_GPIE_EIAME; 5561 /* 5562 * use EIAM to auto-mask when MSI-X interrupt is asserted 5563 * this saves a register write for every interrupt 5564 */ 5565 switch (hw->mac.type) { 5566 case ixgbe_mac_82598EB: 5567 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); 5568 break; 5569 case ixgbe_mac_82599EB: 5570 case ixgbe_mac_X540: 5571 case ixgbe_mac_X550: 5572 case ixgbe_mac_X550EM_x: 5573 case ixgbe_mac_x550em_a: 5574 default: 5575 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF); 5576 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF); 5577 break; 5578 } 5579 } else { 5580 /* legacy interrupts, use EIAM to auto-mask when reading EICR, 5581 * specifically only auto mask tx and rx interrupts */ 5582 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); 5583 } 5584 5585 /* XXX: to interrupt immediately for EICS writes, enable this */ 5586 /* gpie |= IXGBE_GPIE_EIMEN; */ 5587 5588 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 5589 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 5590 5591 switch (adapter->ring_feature[RING_F_VMDQ].mask) { 5592 case IXGBE_82599_VMDQ_8Q_MASK: 5593 gpie |= IXGBE_GPIE_VTMODE_16; 5594 break; 5595 case IXGBE_82599_VMDQ_4Q_MASK: 5596 gpie |= IXGBE_GPIE_VTMODE_32; 5597 break; 5598 default: 5599 gpie |= IXGBE_GPIE_VTMODE_64; 5600 break; 5601 } 5602 } 5603 5604 /* Enable Thermal over heat sensor interrupt */ 5605 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) { 5606 switch (adapter->hw.mac.type) { 5607 case ixgbe_mac_82599EB: 5608 gpie |= IXGBE_SDP0_GPIEN_8259X; 5609 break; 5610 default: 5611 break; 5612 } 5613 } 5614 5615 /* Enable fan failure interrupt */ 5616 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) 5617 gpie |= IXGBE_SDP1_GPIEN(hw); 5618 5619 switch (hw->mac.type) { 5620 case ixgbe_mac_82599EB: 5621 gpie |= IXGBE_SDP1_GPIEN_8259X | IXGBE_SDP2_GPIEN_8259X; 5622 break; 5623 case ixgbe_mac_X550EM_x: 5624 case ixgbe_mac_x550em_a: 5625 gpie |= IXGBE_SDP0_GPIEN_X540; 5626 break; 5627 default: 5628 break; 5629 } 5630 5631 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 5632 } 5633 5634 static void ixgbe_up_complete(struct ixgbe_adapter *adapter) 5635 { 5636 struct ixgbe_hw *hw = &adapter->hw; 5637 int err; 5638 u32 ctrl_ext; 5639 5640 ixgbe_get_hw_control(adapter); 5641 ixgbe_setup_gpie(adapter); 5642 5643 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) 5644 ixgbe_configure_msix(adapter); 5645 else 5646 ixgbe_configure_msi_and_legacy(adapter); 5647 5648 /* enable the optics for 82599 SFP+ fiber */ 5649 if (hw->mac.ops.enable_tx_laser) 5650 hw->mac.ops.enable_tx_laser(hw); 5651 5652 if (hw->phy.ops.set_phy_power) 5653 hw->phy.ops.set_phy_power(hw, true); 5654 5655 smp_mb__before_atomic(); 5656 clear_bit(__IXGBE_DOWN, &adapter->state); 5657 ixgbe_napi_enable_all(adapter); 5658 5659 if (ixgbe_is_sfp(hw)) { 5660 ixgbe_sfp_link_config(adapter); 5661 } else { 5662 err = ixgbe_non_sfp_link_config(hw); 5663 if (err) 5664 e_err(probe, "link_config FAILED %d\n", err); 5665 } 5666 5667 /* clear any pending interrupts, may auto mask */ 5668 IXGBE_READ_REG(hw, IXGBE_EICR); 5669 ixgbe_irq_enable(adapter, true, true); 5670 5671 /* 5672 * If this adapter has a fan, check to see if we had a failure 5673 * before we enabled the interrupt. 5674 */ 5675 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { 5676 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); 5677 if (esdp & IXGBE_ESDP_SDP1) 5678 e_crit(drv, "Fan has stopped, replace the adapter\n"); 5679 } 5680 5681 /* bring the link up in the watchdog, this could race with our first 5682 * link up interrupt but shouldn't be a problem */ 5683 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 5684 adapter->link_check_timeout = jiffies; 5685 mod_timer(&adapter->service_timer, jiffies); 5686 5687 /* Set PF Reset Done bit so PF/VF Mail Ops can work */ 5688 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT); 5689 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD; 5690 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext); 5691 5692 /* update setting rx tx for all active vfs */ 5693 ixgbe_set_all_vfs(adapter); 5694 } 5695 5696 void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) 5697 { 5698 /* put off any impending NetWatchDogTimeout */ 5699 netif_trans_update(adapter->netdev); 5700 5701 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) 5702 usleep_range(1000, 2000); 5703 if (adapter->hw.phy.type == ixgbe_phy_fw) 5704 ixgbe_watchdog_link_is_down(adapter); 5705 ixgbe_down(adapter); 5706 /* 5707 * If SR-IOV enabled then wait a bit before bringing the adapter 5708 * back up to give the VFs time to respond to the reset. The 5709 * two second wait is based upon the watchdog timer cycle in 5710 * the VF driver. 5711 */ 5712 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 5713 msleep(2000); 5714 ixgbe_up(adapter); 5715 clear_bit(__IXGBE_RESETTING, &adapter->state); 5716 } 5717 5718 void ixgbe_up(struct ixgbe_adapter *adapter) 5719 { 5720 /* hardware has been reset, we need to reload some things */ 5721 ixgbe_configure(adapter); 5722 5723 ixgbe_up_complete(adapter); 5724 } 5725 5726 static unsigned long ixgbe_get_completion_timeout(struct ixgbe_adapter *adapter) 5727 { 5728 u16 devctl2; 5729 5730 pcie_capability_read_word(adapter->pdev, PCI_EXP_DEVCTL2, &devctl2); 5731 5732 switch (devctl2 & IXGBE_PCIDEVCTRL2_TIMEO_MASK) { 5733 case IXGBE_PCIDEVCTRL2_17_34s: 5734 case IXGBE_PCIDEVCTRL2_4_8s: 5735 /* For now we cap the upper limit on delay to 2 seconds 5736 * as we end up going up to 34 seconds of delay in worst 5737 * case timeout value. 5738 */ 5739 case IXGBE_PCIDEVCTRL2_1_2s: 5740 return 2000000ul; /* 2.0 s */ 5741 case IXGBE_PCIDEVCTRL2_260_520ms: 5742 return 520000ul; /* 520 ms */ 5743 case IXGBE_PCIDEVCTRL2_65_130ms: 5744 return 130000ul; /* 130 ms */ 5745 case IXGBE_PCIDEVCTRL2_16_32ms: 5746 return 32000ul; /* 32 ms */ 5747 case IXGBE_PCIDEVCTRL2_1_2ms: 5748 return 2000ul; /* 2 ms */ 5749 case IXGBE_PCIDEVCTRL2_50_100us: 5750 return 100ul; /* 100 us */ 5751 case IXGBE_PCIDEVCTRL2_16_32ms_def: 5752 return 32000ul; /* 32 ms */ 5753 default: 5754 break; 5755 } 5756 5757 /* We shouldn't need to hit this path, but just in case default as 5758 * though completion timeout is not supported and support 32ms. 5759 */ 5760 return 32000ul; 5761 } 5762 5763 void ixgbe_disable_rx(struct ixgbe_adapter *adapter) 5764 { 5765 unsigned long wait_delay, delay_interval; 5766 struct ixgbe_hw *hw = &adapter->hw; 5767 int i, wait_loop; 5768 u32 rxdctl; 5769 5770 /* disable receives */ 5771 hw->mac.ops.disable_rx(hw); 5772 5773 if (ixgbe_removed(hw->hw_addr)) 5774 return; 5775 5776 /* disable all enabled Rx queues */ 5777 for (i = 0; i < adapter->num_rx_queues; i++) { 5778 struct ixgbe_ring *ring = adapter->rx_ring[i]; 5779 u8 reg_idx = ring->reg_idx; 5780 5781 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 5782 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 5783 rxdctl |= IXGBE_RXDCTL_SWFLSH; 5784 5785 /* write value back with RXDCTL.ENABLE bit cleared */ 5786 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 5787 } 5788 5789 /* RXDCTL.EN may not change on 82598 if link is down, so skip it */ 5790 if (hw->mac.type == ixgbe_mac_82598EB && 5791 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 5792 return; 5793 5794 /* Determine our minimum delay interval. We will increase this value 5795 * with each subsequent test. This way if the device returns quickly 5796 * we should spend as little time as possible waiting, however as 5797 * the time increases we will wait for larger periods of time. 5798 * 5799 * The trick here is that we increase the interval using the 5800 * following pattern: 1x 3x 5x 7x 9x 11x 13x 15x 17x 19x. The result 5801 * of that wait is that it totals up to 100x whatever interval we 5802 * choose. Since our minimum wait is 100us we can just divide the 5803 * total timeout by 100 to get our minimum delay interval. 5804 */ 5805 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 5806 5807 wait_loop = IXGBE_MAX_RX_DESC_POLL; 5808 wait_delay = delay_interval; 5809 5810 while (wait_loop--) { 5811 usleep_range(wait_delay, wait_delay + 10); 5812 wait_delay += delay_interval * 2; 5813 rxdctl = 0; 5814 5815 /* OR together the reading of all the active RXDCTL registers, 5816 * and then test the result. We need the disable to complete 5817 * before we start freeing the memory and invalidating the 5818 * DMA mappings. 5819 */ 5820 for (i = 0; i < adapter->num_rx_queues; i++) { 5821 struct ixgbe_ring *ring = adapter->rx_ring[i]; 5822 u8 reg_idx = ring->reg_idx; 5823 5824 rxdctl |= IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 5825 } 5826 5827 if (!(rxdctl & IXGBE_RXDCTL_ENABLE)) 5828 return; 5829 } 5830 5831 e_err(drv, 5832 "RXDCTL.ENABLE for one or more queues not cleared within the polling period\n"); 5833 } 5834 5835 void ixgbe_disable_tx(struct ixgbe_adapter *adapter) 5836 { 5837 unsigned long wait_delay, delay_interval; 5838 struct ixgbe_hw *hw = &adapter->hw; 5839 int i, wait_loop; 5840 u32 txdctl; 5841 5842 if (ixgbe_removed(hw->hw_addr)) 5843 return; 5844 5845 /* disable all enabled Tx queues */ 5846 for (i = 0; i < adapter->num_tx_queues; i++) { 5847 struct ixgbe_ring *ring = adapter->tx_ring[i]; 5848 u8 reg_idx = ring->reg_idx; 5849 5850 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 5851 } 5852 5853 /* disable all enabled XDP Tx queues */ 5854 for (i = 0; i < adapter->num_xdp_queues; i++) { 5855 struct ixgbe_ring *ring = adapter->xdp_ring[i]; 5856 u8 reg_idx = ring->reg_idx; 5857 5858 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 5859 } 5860 5861 /* If the link is not up there shouldn't be much in the way of 5862 * pending transactions. Those that are left will be flushed out 5863 * when the reset logic goes through the flush sequence to clean out 5864 * the pending Tx transactions. 5865 */ 5866 if (!(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 5867 goto dma_engine_disable; 5868 5869 /* Determine our minimum delay interval. We will increase this value 5870 * with each subsequent test. This way if the device returns quickly 5871 * we should spend as little time as possible waiting, however as 5872 * the time increases we will wait for larger periods of time. 5873 * 5874 * The trick here is that we increase the interval using the 5875 * following pattern: 1x 3x 5x 7x 9x 11x 13x 15x 17x 19x. The result 5876 * of that wait is that it totals up to 100x whatever interval we 5877 * choose. Since our minimum wait is 100us we can just divide the 5878 * total timeout by 100 to get our minimum delay interval. 5879 */ 5880 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 5881 5882 wait_loop = IXGBE_MAX_RX_DESC_POLL; 5883 wait_delay = delay_interval; 5884 5885 while (wait_loop--) { 5886 usleep_range(wait_delay, wait_delay + 10); 5887 wait_delay += delay_interval * 2; 5888 txdctl = 0; 5889 5890 /* OR together the reading of all the active TXDCTL registers, 5891 * and then test the result. We need the disable to complete 5892 * before we start freeing the memory and invalidating the 5893 * DMA mappings. 5894 */ 5895 for (i = 0; i < adapter->num_tx_queues; i++) { 5896 struct ixgbe_ring *ring = adapter->tx_ring[i]; 5897 u8 reg_idx = ring->reg_idx; 5898 5899 txdctl |= IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 5900 } 5901 for (i = 0; i < adapter->num_xdp_queues; i++) { 5902 struct ixgbe_ring *ring = adapter->xdp_ring[i]; 5903 u8 reg_idx = ring->reg_idx; 5904 5905 txdctl |= IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 5906 } 5907 5908 if (!(txdctl & IXGBE_TXDCTL_ENABLE)) 5909 goto dma_engine_disable; 5910 } 5911 5912 e_err(drv, 5913 "TXDCTL.ENABLE for one or more queues not cleared within the polling period\n"); 5914 5915 dma_engine_disable: 5916 /* Disable the Tx DMA engine on 82599 and later MAC */ 5917 switch (hw->mac.type) { 5918 case ixgbe_mac_82599EB: 5919 case ixgbe_mac_X540: 5920 case ixgbe_mac_X550: 5921 case ixgbe_mac_X550EM_x: 5922 case ixgbe_mac_x550em_a: 5923 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, 5924 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) & 5925 ~IXGBE_DMATXCTL_TE)); 5926 fallthrough; 5927 default: 5928 break; 5929 } 5930 } 5931 5932 void ixgbe_reset(struct ixgbe_adapter *adapter) 5933 { 5934 struct ixgbe_hw *hw = &adapter->hw; 5935 struct net_device *netdev = adapter->netdev; 5936 int err; 5937 5938 if (ixgbe_removed(hw->hw_addr)) 5939 return; 5940 /* lock SFP init bit to prevent race conditions with the watchdog */ 5941 while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 5942 usleep_range(1000, 2000); 5943 5944 /* clear all SFP and link config related flags while holding SFP_INIT */ 5945 adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP | 5946 IXGBE_FLAG2_SFP_NEEDS_RESET); 5947 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; 5948 5949 err = hw->mac.ops.init_hw(hw); 5950 switch (err) { 5951 case 0: 5952 case IXGBE_ERR_SFP_NOT_PRESENT: 5953 case IXGBE_ERR_SFP_NOT_SUPPORTED: 5954 break; 5955 case IXGBE_ERR_PRIMARY_REQUESTS_PENDING: 5956 e_dev_err("primary disable timed out\n"); 5957 break; 5958 case IXGBE_ERR_EEPROM_VERSION: 5959 /* We are running on a pre-production device, log a warning */ 5960 e_dev_warn("This device is a pre-production adapter/LOM. " 5961 "Please be aware there may be issues associated with " 5962 "your hardware. If you are experiencing problems " 5963 "please contact your Intel or hardware " 5964 "representative who provided you with this " 5965 "hardware.\n"); 5966 break; 5967 default: 5968 e_dev_err("Hardware Error: %d\n", err); 5969 } 5970 5971 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 5972 5973 /* flush entries out of MAC table */ 5974 ixgbe_flush_sw_mac_table(adapter); 5975 __dev_uc_unsync(netdev, NULL); 5976 5977 /* do not flush user set addresses */ 5978 ixgbe_mac_set_default_filter(adapter); 5979 5980 /* update SAN MAC vmdq pool selection */ 5981 if (hw->mac.san_mac_rar_index) 5982 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0)); 5983 5984 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 5985 ixgbe_ptp_reset(adapter); 5986 5987 if (hw->phy.ops.set_phy_power) { 5988 if (!netif_running(adapter->netdev) && !adapter->wol) 5989 hw->phy.ops.set_phy_power(hw, false); 5990 else 5991 hw->phy.ops.set_phy_power(hw, true); 5992 } 5993 } 5994 5995 /** 5996 * ixgbe_clean_tx_ring - Free Tx Buffers 5997 * @tx_ring: ring to be cleaned 5998 **/ 5999 static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring) 6000 { 6001 u16 i = tx_ring->next_to_clean; 6002 struct ixgbe_tx_buffer *tx_buffer = &tx_ring->tx_buffer_info[i]; 6003 6004 if (tx_ring->xsk_pool) { 6005 ixgbe_xsk_clean_tx_ring(tx_ring); 6006 goto out; 6007 } 6008 6009 while (i != tx_ring->next_to_use) { 6010 union ixgbe_adv_tx_desc *eop_desc, *tx_desc; 6011 6012 /* Free all the Tx ring sk_buffs */ 6013 if (ring_is_xdp(tx_ring)) 6014 xdp_return_frame(tx_buffer->xdpf); 6015 else 6016 dev_kfree_skb_any(tx_buffer->skb); 6017 6018 /* unmap skb header data */ 6019 dma_unmap_single(tx_ring->dev, 6020 dma_unmap_addr(tx_buffer, dma), 6021 dma_unmap_len(tx_buffer, len), 6022 DMA_TO_DEVICE); 6023 6024 /* check for eop_desc to determine the end of the packet */ 6025 eop_desc = tx_buffer->next_to_watch; 6026 tx_desc = IXGBE_TX_DESC(tx_ring, i); 6027 6028 /* unmap remaining buffers */ 6029 while (tx_desc != eop_desc) { 6030 tx_buffer++; 6031 tx_desc++; 6032 i++; 6033 if (unlikely(i == tx_ring->count)) { 6034 i = 0; 6035 tx_buffer = tx_ring->tx_buffer_info; 6036 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 6037 } 6038 6039 /* unmap any remaining paged data */ 6040 if (dma_unmap_len(tx_buffer, len)) 6041 dma_unmap_page(tx_ring->dev, 6042 dma_unmap_addr(tx_buffer, dma), 6043 dma_unmap_len(tx_buffer, len), 6044 DMA_TO_DEVICE); 6045 } 6046 6047 /* move us one more past the eop_desc for start of next pkt */ 6048 tx_buffer++; 6049 i++; 6050 if (unlikely(i == tx_ring->count)) { 6051 i = 0; 6052 tx_buffer = tx_ring->tx_buffer_info; 6053 } 6054 } 6055 6056 /* reset BQL for queue */ 6057 if (!ring_is_xdp(tx_ring)) 6058 netdev_tx_reset_queue(txring_txq(tx_ring)); 6059 6060 out: 6061 /* reset next_to_use and next_to_clean */ 6062 tx_ring->next_to_use = 0; 6063 tx_ring->next_to_clean = 0; 6064 } 6065 6066 /** 6067 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues 6068 * @adapter: board private structure 6069 **/ 6070 static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) 6071 { 6072 int i; 6073 6074 for (i = 0; i < adapter->num_rx_queues; i++) 6075 ixgbe_clean_rx_ring(adapter->rx_ring[i]); 6076 } 6077 6078 /** 6079 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues 6080 * @adapter: board private structure 6081 **/ 6082 static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) 6083 { 6084 int i; 6085 6086 for (i = 0; i < adapter->num_tx_queues; i++) 6087 ixgbe_clean_tx_ring(adapter->tx_ring[i]); 6088 for (i = 0; i < adapter->num_xdp_queues; i++) 6089 ixgbe_clean_tx_ring(adapter->xdp_ring[i]); 6090 } 6091 6092 static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter) 6093 { 6094 struct hlist_node *node2; 6095 struct ixgbe_fdir_filter *filter; 6096 6097 spin_lock(&adapter->fdir_perfect_lock); 6098 6099 hlist_for_each_entry_safe(filter, node2, 6100 &adapter->fdir_filter_list, fdir_node) { 6101 hlist_del(&filter->fdir_node); 6102 kfree(filter); 6103 } 6104 adapter->fdir_filter_count = 0; 6105 6106 spin_unlock(&adapter->fdir_perfect_lock); 6107 } 6108 6109 void ixgbe_down(struct ixgbe_adapter *adapter) 6110 { 6111 struct net_device *netdev = adapter->netdev; 6112 struct ixgbe_hw *hw = &adapter->hw; 6113 int i; 6114 6115 /* signal that we are down to the interrupt handler */ 6116 if (test_and_set_bit(__IXGBE_DOWN, &adapter->state)) 6117 return; /* do nothing if already down */ 6118 6119 /* Shut off incoming Tx traffic */ 6120 netif_tx_stop_all_queues(netdev); 6121 6122 /* call carrier off first to avoid false dev_watchdog timeouts */ 6123 netif_carrier_off(netdev); 6124 netif_tx_disable(netdev); 6125 6126 /* Disable Rx */ 6127 ixgbe_disable_rx(adapter); 6128 6129 /* synchronize_rcu() needed for pending XDP buffers to drain */ 6130 if (adapter->xdp_ring[0]) 6131 synchronize_rcu(); 6132 6133 ixgbe_irq_disable(adapter); 6134 6135 ixgbe_napi_disable_all(adapter); 6136 6137 clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 6138 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 6139 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; 6140 6141 del_timer_sync(&adapter->service_timer); 6142 6143 if (adapter->num_vfs) { 6144 /* Clear EITR Select mapping */ 6145 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0); 6146 6147 /* Mark all the VFs as inactive */ 6148 for (i = 0 ; i < adapter->num_vfs; i++) 6149 adapter->vfinfo[i].clear_to_send = false; 6150 6151 /* update setting rx tx for all active vfs */ 6152 ixgbe_set_all_vfs(adapter); 6153 } 6154 6155 /* disable transmits in the hardware now that interrupts are off */ 6156 ixgbe_disable_tx(adapter); 6157 6158 if (!pci_channel_offline(adapter->pdev)) 6159 ixgbe_reset(adapter); 6160 6161 /* power down the optics for 82599 SFP+ fiber */ 6162 if (hw->mac.ops.disable_tx_laser) 6163 hw->mac.ops.disable_tx_laser(hw); 6164 6165 ixgbe_clean_all_tx_rings(adapter); 6166 ixgbe_clean_all_rx_rings(adapter); 6167 } 6168 6169 /** 6170 * ixgbe_set_eee_capable - helper function to determine EEE support on X550 6171 * @adapter: board private structure 6172 */ 6173 static void ixgbe_set_eee_capable(struct ixgbe_adapter *adapter) 6174 { 6175 struct ixgbe_hw *hw = &adapter->hw; 6176 6177 switch (hw->device_id) { 6178 case IXGBE_DEV_ID_X550EM_A_1G_T: 6179 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 6180 if (!hw->phy.eee_speeds_supported) 6181 break; 6182 adapter->flags2 |= IXGBE_FLAG2_EEE_CAPABLE; 6183 if (!hw->phy.eee_speeds_advertised) 6184 break; 6185 adapter->flags2 |= IXGBE_FLAG2_EEE_ENABLED; 6186 break; 6187 default: 6188 adapter->flags2 &= ~IXGBE_FLAG2_EEE_CAPABLE; 6189 adapter->flags2 &= ~IXGBE_FLAG2_EEE_ENABLED; 6190 break; 6191 } 6192 } 6193 6194 /** 6195 * ixgbe_tx_timeout - Respond to a Tx Hang 6196 * @netdev: network interface device structure 6197 * @txqueue: queue number that timed out 6198 **/ 6199 static void ixgbe_tx_timeout(struct net_device *netdev, unsigned int __always_unused txqueue) 6200 { 6201 struct ixgbe_adapter *adapter = netdev_priv(netdev); 6202 6203 /* Do the reset outside of interrupt context */ 6204 ixgbe_tx_timeout_reset(adapter); 6205 } 6206 6207 #ifdef CONFIG_IXGBE_DCB 6208 static void ixgbe_init_dcb(struct ixgbe_adapter *adapter) 6209 { 6210 struct ixgbe_hw *hw = &adapter->hw; 6211 struct tc_configuration *tc; 6212 int j; 6213 6214 switch (hw->mac.type) { 6215 case ixgbe_mac_82598EB: 6216 case ixgbe_mac_82599EB: 6217 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 6218 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 6219 break; 6220 case ixgbe_mac_X540: 6221 case ixgbe_mac_X550: 6222 adapter->dcb_cfg.num_tcs.pg_tcs = X540_TRAFFIC_CLASS; 6223 adapter->dcb_cfg.num_tcs.pfc_tcs = X540_TRAFFIC_CLASS; 6224 break; 6225 case ixgbe_mac_X550EM_x: 6226 case ixgbe_mac_x550em_a: 6227 default: 6228 adapter->dcb_cfg.num_tcs.pg_tcs = DEF_TRAFFIC_CLASS; 6229 adapter->dcb_cfg.num_tcs.pfc_tcs = DEF_TRAFFIC_CLASS; 6230 break; 6231 } 6232 6233 /* Configure DCB traffic classes */ 6234 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) { 6235 tc = &adapter->dcb_cfg.tc_config[j]; 6236 tc->path[DCB_TX_CONFIG].bwg_id = 0; 6237 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1); 6238 tc->path[DCB_RX_CONFIG].bwg_id = 0; 6239 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1); 6240 tc->dcb_pfc = pfc_disabled; 6241 } 6242 6243 /* Initialize default user to priority mapping, UPx->TC0 */ 6244 tc = &adapter->dcb_cfg.tc_config[0]; 6245 tc->path[DCB_TX_CONFIG].up_to_tc_bitmap = 0xFF; 6246 tc->path[DCB_RX_CONFIG].up_to_tc_bitmap = 0xFF; 6247 6248 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100; 6249 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100; 6250 adapter->dcb_cfg.pfc_mode_enable = false; 6251 adapter->dcb_set_bitmap = 0x00; 6252 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE) 6253 adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE; 6254 memcpy(&adapter->temp_dcb_cfg, &adapter->dcb_cfg, 6255 sizeof(adapter->temp_dcb_cfg)); 6256 } 6257 #endif 6258 6259 /** 6260 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) 6261 * @adapter: board private structure to initialize 6262 * @ii: pointer to ixgbe_info for device 6263 * 6264 * ixgbe_sw_init initializes the Adapter private data structure. 6265 * Fields are initialized based on PCI device information and 6266 * OS network device settings (MTU size). 6267 **/ 6268 static int ixgbe_sw_init(struct ixgbe_adapter *adapter, 6269 const struct ixgbe_info *ii) 6270 { 6271 struct ixgbe_hw *hw = &adapter->hw; 6272 struct pci_dev *pdev = adapter->pdev; 6273 unsigned int rss, fdir; 6274 u32 fwsm; 6275 int i; 6276 6277 /* PCI config space info */ 6278 6279 hw->vendor_id = pdev->vendor; 6280 hw->device_id = pdev->device; 6281 hw->revision_id = pdev->revision; 6282 hw->subsystem_vendor_id = pdev->subsystem_vendor; 6283 hw->subsystem_device_id = pdev->subsystem_device; 6284 6285 /* get_invariants needs the device IDs */ 6286 ii->get_invariants(hw); 6287 6288 /* Set common capability flags and settings */ 6289 rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus()); 6290 adapter->ring_feature[RING_F_RSS].limit = rss; 6291 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE; 6292 adapter->max_q_vectors = MAX_Q_VECTORS_82599; 6293 adapter->atr_sample_rate = 20; 6294 fdir = min_t(int, IXGBE_MAX_FDIR_INDICES, num_online_cpus()); 6295 adapter->ring_feature[RING_F_FDIR].limit = fdir; 6296 adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K; 6297 adapter->ring_feature[RING_F_VMDQ].limit = 1; 6298 #ifdef CONFIG_IXGBE_DCA 6299 adapter->flags |= IXGBE_FLAG_DCA_CAPABLE; 6300 #endif 6301 #ifdef CONFIG_IXGBE_DCB 6302 adapter->flags |= IXGBE_FLAG_DCB_CAPABLE; 6303 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; 6304 #endif 6305 #ifdef IXGBE_FCOE 6306 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE; 6307 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; 6308 #ifdef CONFIG_IXGBE_DCB 6309 /* Default traffic class to use for FCoE */ 6310 adapter->fcoe.up = IXGBE_FCOE_DEFTC; 6311 #endif /* CONFIG_IXGBE_DCB */ 6312 #endif /* IXGBE_FCOE */ 6313 6314 /* initialize static ixgbe jump table entries */ 6315 adapter->jump_tables[0] = kzalloc(sizeof(*adapter->jump_tables[0]), 6316 GFP_KERNEL); 6317 if (!adapter->jump_tables[0]) 6318 return -ENOMEM; 6319 adapter->jump_tables[0]->mat = ixgbe_ipv4_fields; 6320 6321 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) 6322 adapter->jump_tables[i] = NULL; 6323 6324 adapter->mac_table = kcalloc(hw->mac.num_rar_entries, 6325 sizeof(struct ixgbe_mac_addr), 6326 GFP_KERNEL); 6327 if (!adapter->mac_table) 6328 return -ENOMEM; 6329 6330 if (ixgbe_init_rss_key(adapter)) 6331 return -ENOMEM; 6332 6333 adapter->af_xdp_zc_qps = bitmap_zalloc(IXGBE_MAX_XDP_QS, GFP_KERNEL); 6334 if (!adapter->af_xdp_zc_qps) 6335 return -ENOMEM; 6336 6337 /* Set MAC specific capability flags and exceptions */ 6338 switch (hw->mac.type) { 6339 case ixgbe_mac_82598EB: 6340 adapter->flags2 &= ~IXGBE_FLAG2_RSC_CAPABLE; 6341 6342 if (hw->device_id == IXGBE_DEV_ID_82598AT) 6343 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE; 6344 6345 adapter->max_q_vectors = MAX_Q_VECTORS_82598; 6346 adapter->ring_feature[RING_F_FDIR].limit = 0; 6347 adapter->atr_sample_rate = 0; 6348 adapter->fdir_pballoc = 0; 6349 #ifdef IXGBE_FCOE 6350 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 6351 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; 6352 #ifdef CONFIG_IXGBE_DCB 6353 adapter->fcoe.up = 0; 6354 #endif /* IXGBE_DCB */ 6355 #endif /* IXGBE_FCOE */ 6356 break; 6357 case ixgbe_mac_82599EB: 6358 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM) 6359 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6360 break; 6361 case ixgbe_mac_X540: 6362 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw)); 6363 if (fwsm & IXGBE_FWSM_TS_ENABLED) 6364 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6365 break; 6366 case ixgbe_mac_x550em_a: 6367 switch (hw->device_id) { 6368 case IXGBE_DEV_ID_X550EM_A_1G_T: 6369 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 6370 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6371 break; 6372 default: 6373 break; 6374 } 6375 fallthrough; 6376 case ixgbe_mac_X550EM_x: 6377 #ifdef CONFIG_IXGBE_DCB 6378 adapter->flags &= ~IXGBE_FLAG_DCB_CAPABLE; 6379 #endif 6380 #ifdef IXGBE_FCOE 6381 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 6382 #ifdef CONFIG_IXGBE_DCB 6383 adapter->fcoe.up = 0; 6384 #endif /* IXGBE_DCB */ 6385 #endif /* IXGBE_FCOE */ 6386 fallthrough; 6387 case ixgbe_mac_X550: 6388 if (hw->mac.type == ixgbe_mac_X550) 6389 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6390 #ifdef CONFIG_IXGBE_DCA 6391 adapter->flags &= ~IXGBE_FLAG_DCA_CAPABLE; 6392 #endif 6393 break; 6394 default: 6395 break; 6396 } 6397 6398 #ifdef IXGBE_FCOE 6399 /* FCoE support exists, always init the FCoE lock */ 6400 spin_lock_init(&adapter->fcoe.lock); 6401 6402 #endif 6403 /* n-tuple support exists, always init our spinlock */ 6404 spin_lock_init(&adapter->fdir_perfect_lock); 6405 6406 #ifdef CONFIG_IXGBE_DCB 6407 ixgbe_init_dcb(adapter); 6408 #endif 6409 ixgbe_init_ipsec_offload(adapter); 6410 6411 /* default flow control settings */ 6412 hw->fc.requested_mode = ixgbe_fc_full; 6413 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */ 6414 ixgbe_pbthresh_setup(adapter); 6415 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; 6416 hw->fc.send_xon = true; 6417 hw->fc.disable_fc_autoneg = ixgbe_device_supports_autoneg_fc(hw); 6418 6419 #ifdef CONFIG_PCI_IOV 6420 if (max_vfs > 0) 6421 e_dev_warn("Enabling SR-IOV VFs using the max_vfs module parameter is deprecated - please use the pci sysfs interface instead.\n"); 6422 6423 /* assign number of SR-IOV VFs */ 6424 if (hw->mac.type != ixgbe_mac_82598EB) { 6425 if (max_vfs > IXGBE_MAX_VFS_DRV_LIMIT) { 6426 max_vfs = 0; 6427 e_dev_warn("max_vfs parameter out of range. Not assigning any SR-IOV VFs\n"); 6428 } 6429 } 6430 #endif /* CONFIG_PCI_IOV */ 6431 6432 /* enable itr by default in dynamic mode */ 6433 adapter->rx_itr_setting = 1; 6434 adapter->tx_itr_setting = 1; 6435 6436 /* set default ring sizes */ 6437 adapter->tx_ring_count = IXGBE_DEFAULT_TXD; 6438 adapter->rx_ring_count = IXGBE_DEFAULT_RXD; 6439 6440 /* set default work limits */ 6441 adapter->tx_work_limit = IXGBE_DEFAULT_TX_WORK; 6442 6443 /* initialize eeprom parameters */ 6444 if (ixgbe_init_eeprom_params_generic(hw)) { 6445 e_dev_err("EEPROM initialization failed\n"); 6446 return -EIO; 6447 } 6448 6449 /* PF holds first pool slot */ 6450 set_bit(0, adapter->fwd_bitmask); 6451 set_bit(__IXGBE_DOWN, &adapter->state); 6452 6453 return 0; 6454 } 6455 6456 /** 6457 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) 6458 * @tx_ring: tx descriptor ring (for a specific queue) to setup 6459 * 6460 * Return 0 on success, negative on failure 6461 **/ 6462 int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring) 6463 { 6464 struct device *dev = tx_ring->dev; 6465 int orig_node = dev_to_node(dev); 6466 int ring_node = NUMA_NO_NODE; 6467 int size; 6468 6469 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; 6470 6471 if (tx_ring->q_vector) 6472 ring_node = tx_ring->q_vector->numa_node; 6473 6474 tx_ring->tx_buffer_info = vmalloc_node(size, ring_node); 6475 if (!tx_ring->tx_buffer_info) 6476 tx_ring->tx_buffer_info = vmalloc(size); 6477 if (!tx_ring->tx_buffer_info) 6478 goto err; 6479 6480 /* round up to nearest 4K */ 6481 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc); 6482 tx_ring->size = ALIGN(tx_ring->size, 4096); 6483 6484 set_dev_node(dev, ring_node); 6485 tx_ring->desc = dma_alloc_coherent(dev, 6486 tx_ring->size, 6487 &tx_ring->dma, 6488 GFP_KERNEL); 6489 set_dev_node(dev, orig_node); 6490 if (!tx_ring->desc) 6491 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, 6492 &tx_ring->dma, GFP_KERNEL); 6493 if (!tx_ring->desc) 6494 goto err; 6495 6496 tx_ring->next_to_use = 0; 6497 tx_ring->next_to_clean = 0; 6498 return 0; 6499 6500 err: 6501 vfree(tx_ring->tx_buffer_info); 6502 tx_ring->tx_buffer_info = NULL; 6503 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n"); 6504 return -ENOMEM; 6505 } 6506 6507 /** 6508 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources 6509 * @adapter: board private structure 6510 * 6511 * If this function returns with an error, then it's possible one or 6512 * more of the rings is populated (while the rest are not). It is the 6513 * callers duty to clean those orphaned rings. 6514 * 6515 * Return 0 on success, negative on failure 6516 **/ 6517 static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) 6518 { 6519 int i, j = 0, err = 0; 6520 6521 for (i = 0; i < adapter->num_tx_queues; i++) { 6522 err = ixgbe_setup_tx_resources(adapter->tx_ring[i]); 6523 if (!err) 6524 continue; 6525 6526 e_err(probe, "Allocation for Tx Queue %u failed\n", i); 6527 goto err_setup_tx; 6528 } 6529 for (j = 0; j < adapter->num_xdp_queues; j++) { 6530 err = ixgbe_setup_tx_resources(adapter->xdp_ring[j]); 6531 if (!err) 6532 continue; 6533 6534 e_err(probe, "Allocation for Tx Queue %u failed\n", j); 6535 goto err_setup_tx; 6536 } 6537 6538 return 0; 6539 err_setup_tx: 6540 /* rewind the index freeing the rings as we go */ 6541 while (j--) 6542 ixgbe_free_tx_resources(adapter->xdp_ring[j]); 6543 while (i--) 6544 ixgbe_free_tx_resources(adapter->tx_ring[i]); 6545 return err; 6546 } 6547 6548 static int ixgbe_rx_napi_id(struct ixgbe_ring *rx_ring) 6549 { 6550 struct ixgbe_q_vector *q_vector = rx_ring->q_vector; 6551 6552 return q_vector ? q_vector->napi.napi_id : 0; 6553 } 6554 6555 /** 6556 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) 6557 * @adapter: pointer to ixgbe_adapter 6558 * @rx_ring: rx descriptor ring (for a specific queue) to setup 6559 * 6560 * Returns 0 on success, negative on failure 6561 **/ 6562 int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, 6563 struct ixgbe_ring *rx_ring) 6564 { 6565 struct device *dev = rx_ring->dev; 6566 int orig_node = dev_to_node(dev); 6567 int ring_node = NUMA_NO_NODE; 6568 int size; 6569 6570 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; 6571 6572 if (rx_ring->q_vector) 6573 ring_node = rx_ring->q_vector->numa_node; 6574 6575 rx_ring->rx_buffer_info = vmalloc_node(size, ring_node); 6576 if (!rx_ring->rx_buffer_info) 6577 rx_ring->rx_buffer_info = vmalloc(size); 6578 if (!rx_ring->rx_buffer_info) 6579 goto err; 6580 6581 /* Round up to nearest 4K */ 6582 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); 6583 rx_ring->size = ALIGN(rx_ring->size, 4096); 6584 6585 set_dev_node(dev, ring_node); 6586 rx_ring->desc = dma_alloc_coherent(dev, 6587 rx_ring->size, 6588 &rx_ring->dma, 6589 GFP_KERNEL); 6590 set_dev_node(dev, orig_node); 6591 if (!rx_ring->desc) 6592 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, 6593 &rx_ring->dma, GFP_KERNEL); 6594 if (!rx_ring->desc) 6595 goto err; 6596 6597 rx_ring->next_to_clean = 0; 6598 rx_ring->next_to_use = 0; 6599 6600 /* XDP RX-queue info */ 6601 if (xdp_rxq_info_reg(&rx_ring->xdp_rxq, adapter->netdev, 6602 rx_ring->queue_index, ixgbe_rx_napi_id(rx_ring)) < 0) 6603 goto err; 6604 6605 rx_ring->xdp_prog = adapter->xdp_prog; 6606 6607 return 0; 6608 err: 6609 vfree(rx_ring->rx_buffer_info); 6610 rx_ring->rx_buffer_info = NULL; 6611 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n"); 6612 return -ENOMEM; 6613 } 6614 6615 /** 6616 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources 6617 * @adapter: board private structure 6618 * 6619 * If this function returns with an error, then it's possible one or 6620 * more of the rings is populated (while the rest are not). It is the 6621 * callers duty to clean those orphaned rings. 6622 * 6623 * Return 0 on success, negative on failure 6624 **/ 6625 static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) 6626 { 6627 int i, err = 0; 6628 6629 for (i = 0; i < adapter->num_rx_queues; i++) { 6630 err = ixgbe_setup_rx_resources(adapter, adapter->rx_ring[i]); 6631 if (!err) 6632 continue; 6633 6634 e_err(probe, "Allocation for Rx Queue %u failed\n", i); 6635 goto err_setup_rx; 6636 } 6637 6638 #ifdef IXGBE_FCOE 6639 err = ixgbe_setup_fcoe_ddp_resources(adapter); 6640 if (!err) 6641 #endif 6642 return 0; 6643 err_setup_rx: 6644 /* rewind the index freeing the rings as we go */ 6645 while (i--) 6646 ixgbe_free_rx_resources(adapter->rx_ring[i]); 6647 return err; 6648 } 6649 6650 /** 6651 * ixgbe_free_tx_resources - Free Tx Resources per Queue 6652 * @tx_ring: Tx descriptor ring for a specific queue 6653 * 6654 * Free all transmit software resources 6655 **/ 6656 void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring) 6657 { 6658 ixgbe_clean_tx_ring(tx_ring); 6659 6660 vfree(tx_ring->tx_buffer_info); 6661 tx_ring->tx_buffer_info = NULL; 6662 6663 /* if not set, then don't free */ 6664 if (!tx_ring->desc) 6665 return; 6666 6667 dma_free_coherent(tx_ring->dev, tx_ring->size, 6668 tx_ring->desc, tx_ring->dma); 6669 6670 tx_ring->desc = NULL; 6671 } 6672 6673 /** 6674 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues 6675 * @adapter: board private structure 6676 * 6677 * Free all transmit software resources 6678 **/ 6679 static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) 6680 { 6681 int i; 6682 6683 for (i = 0; i < adapter->num_tx_queues; i++) 6684 if (adapter->tx_ring[i]->desc) 6685 ixgbe_free_tx_resources(adapter->tx_ring[i]); 6686 for (i = 0; i < adapter->num_xdp_queues; i++) 6687 if (adapter->xdp_ring[i]->desc) 6688 ixgbe_free_tx_resources(adapter->xdp_ring[i]); 6689 } 6690 6691 /** 6692 * ixgbe_free_rx_resources - Free Rx Resources 6693 * @rx_ring: ring to clean the resources from 6694 * 6695 * Free all receive software resources 6696 **/ 6697 void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring) 6698 { 6699 ixgbe_clean_rx_ring(rx_ring); 6700 6701 rx_ring->xdp_prog = NULL; 6702 xdp_rxq_info_unreg(&rx_ring->xdp_rxq); 6703 vfree(rx_ring->rx_buffer_info); 6704 rx_ring->rx_buffer_info = NULL; 6705 6706 /* if not set, then don't free */ 6707 if (!rx_ring->desc) 6708 return; 6709 6710 dma_free_coherent(rx_ring->dev, rx_ring->size, 6711 rx_ring->desc, rx_ring->dma); 6712 6713 rx_ring->desc = NULL; 6714 } 6715 6716 /** 6717 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues 6718 * @adapter: board private structure 6719 * 6720 * Free all receive software resources 6721 **/ 6722 static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) 6723 { 6724 int i; 6725 6726 #ifdef IXGBE_FCOE 6727 ixgbe_free_fcoe_ddp_resources(adapter); 6728 6729 #endif 6730 for (i = 0; i < adapter->num_rx_queues; i++) 6731 if (adapter->rx_ring[i]->desc) 6732 ixgbe_free_rx_resources(adapter->rx_ring[i]); 6733 } 6734 6735 /** 6736 * ixgbe_change_mtu - Change the Maximum Transfer Unit 6737 * @netdev: network interface device structure 6738 * @new_mtu: new value for maximum frame size 6739 * 6740 * Returns 0 on success, negative on failure 6741 **/ 6742 static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) 6743 { 6744 struct ixgbe_adapter *adapter = netdev_priv(netdev); 6745 6746 if (adapter->xdp_prog) { 6747 int new_frame_size = new_mtu + ETH_HLEN + ETH_FCS_LEN + 6748 VLAN_HLEN; 6749 int i; 6750 6751 for (i = 0; i < adapter->num_rx_queues; i++) { 6752 struct ixgbe_ring *ring = adapter->rx_ring[i]; 6753 6754 if (new_frame_size > ixgbe_rx_bufsz(ring)) { 6755 e_warn(probe, "Requested MTU size is not supported with XDP\n"); 6756 return -EINVAL; 6757 } 6758 } 6759 } 6760 6761 /* 6762 * For 82599EB we cannot allow legacy VFs to enable their receive 6763 * paths when MTU greater than 1500 is configured. So display a 6764 * warning that legacy VFs will be disabled. 6765 */ 6766 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && 6767 (adapter->hw.mac.type == ixgbe_mac_82599EB) && 6768 (new_mtu > ETH_DATA_LEN)) 6769 e_warn(probe, "Setting MTU > 1500 will disable legacy VFs\n"); 6770 6771 netdev_dbg(netdev, "changing MTU from %d to %d\n", 6772 netdev->mtu, new_mtu); 6773 6774 /* must set new MTU before calling down or up */ 6775 netdev->mtu = new_mtu; 6776 6777 if (netif_running(netdev)) 6778 ixgbe_reinit_locked(adapter); 6779 6780 return 0; 6781 } 6782 6783 /** 6784 * ixgbe_open - Called when a network interface is made active 6785 * @netdev: network interface device structure 6786 * 6787 * Returns 0 on success, negative value on failure 6788 * 6789 * The open entry point is called when a network interface is made 6790 * active by the system (IFF_UP). At this point all resources needed 6791 * for transmit and receive operations are allocated, the interrupt 6792 * handler is registered with the OS, the watchdog timer is started, 6793 * and the stack is notified that the interface is ready. 6794 **/ 6795 int ixgbe_open(struct net_device *netdev) 6796 { 6797 struct ixgbe_adapter *adapter = netdev_priv(netdev); 6798 struct ixgbe_hw *hw = &adapter->hw; 6799 int err, queues; 6800 6801 /* disallow open during test */ 6802 if (test_bit(__IXGBE_TESTING, &adapter->state)) 6803 return -EBUSY; 6804 6805 netif_carrier_off(netdev); 6806 6807 /* allocate transmit descriptors */ 6808 err = ixgbe_setup_all_tx_resources(adapter); 6809 if (err) 6810 goto err_setup_tx; 6811 6812 /* allocate receive descriptors */ 6813 err = ixgbe_setup_all_rx_resources(adapter); 6814 if (err) 6815 goto err_setup_rx; 6816 6817 ixgbe_configure(adapter); 6818 6819 err = ixgbe_request_irq(adapter); 6820 if (err) 6821 goto err_req_irq; 6822 6823 /* Notify the stack of the actual queue counts. */ 6824 queues = adapter->num_tx_queues; 6825 err = netif_set_real_num_tx_queues(netdev, queues); 6826 if (err) 6827 goto err_set_queues; 6828 6829 queues = adapter->num_rx_queues; 6830 err = netif_set_real_num_rx_queues(netdev, queues); 6831 if (err) 6832 goto err_set_queues; 6833 6834 ixgbe_ptp_init(adapter); 6835 6836 ixgbe_up_complete(adapter); 6837 6838 udp_tunnel_nic_reset_ntf(netdev); 6839 6840 return 0; 6841 6842 err_set_queues: 6843 ixgbe_free_irq(adapter); 6844 err_req_irq: 6845 ixgbe_free_all_rx_resources(adapter); 6846 if (hw->phy.ops.set_phy_power && !adapter->wol) 6847 hw->phy.ops.set_phy_power(&adapter->hw, false); 6848 err_setup_rx: 6849 ixgbe_free_all_tx_resources(adapter); 6850 err_setup_tx: 6851 ixgbe_reset(adapter); 6852 6853 return err; 6854 } 6855 6856 static void ixgbe_close_suspend(struct ixgbe_adapter *adapter) 6857 { 6858 ixgbe_ptp_suspend(adapter); 6859 6860 if (adapter->hw.phy.ops.enter_lplu) { 6861 adapter->hw.phy.reset_disable = true; 6862 ixgbe_down(adapter); 6863 adapter->hw.phy.ops.enter_lplu(&adapter->hw); 6864 adapter->hw.phy.reset_disable = false; 6865 } else { 6866 ixgbe_down(adapter); 6867 } 6868 6869 ixgbe_free_irq(adapter); 6870 6871 ixgbe_free_all_tx_resources(adapter); 6872 ixgbe_free_all_rx_resources(adapter); 6873 } 6874 6875 /** 6876 * ixgbe_close - Disables a network interface 6877 * @netdev: network interface device structure 6878 * 6879 * Returns 0, this is not allowed to fail 6880 * 6881 * The close entry point is called when an interface is de-activated 6882 * by the OS. The hardware is still under the drivers control, but 6883 * needs to be disabled. A global MAC reset is issued to stop the 6884 * hardware, and all transmit and receive resources are freed. 6885 **/ 6886 int ixgbe_close(struct net_device *netdev) 6887 { 6888 struct ixgbe_adapter *adapter = netdev_priv(netdev); 6889 6890 ixgbe_ptp_stop(adapter); 6891 6892 if (netif_device_present(netdev)) 6893 ixgbe_close_suspend(adapter); 6894 6895 ixgbe_fdir_filter_exit(adapter); 6896 6897 ixgbe_release_hw_control(adapter); 6898 6899 return 0; 6900 } 6901 6902 static int __maybe_unused ixgbe_resume(struct device *dev_d) 6903 { 6904 struct pci_dev *pdev = to_pci_dev(dev_d); 6905 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 6906 struct net_device *netdev = adapter->netdev; 6907 u32 err; 6908 6909 adapter->hw.hw_addr = adapter->io_addr; 6910 6911 err = pci_enable_device_mem(pdev); 6912 if (err) { 6913 e_dev_err("Cannot enable PCI device from suspend\n"); 6914 return err; 6915 } 6916 smp_mb__before_atomic(); 6917 clear_bit(__IXGBE_DISABLED, &adapter->state); 6918 pci_set_master(pdev); 6919 6920 device_wakeup_disable(dev_d); 6921 6922 ixgbe_reset(adapter); 6923 6924 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 6925 6926 rtnl_lock(); 6927 err = ixgbe_init_interrupt_scheme(adapter); 6928 if (!err && netif_running(netdev)) 6929 err = ixgbe_open(netdev); 6930 6931 6932 if (!err) 6933 netif_device_attach(netdev); 6934 rtnl_unlock(); 6935 6936 return err; 6937 } 6938 6939 static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake) 6940 { 6941 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 6942 struct net_device *netdev = adapter->netdev; 6943 struct ixgbe_hw *hw = &adapter->hw; 6944 u32 ctrl; 6945 u32 wufc = adapter->wol; 6946 6947 rtnl_lock(); 6948 netif_device_detach(netdev); 6949 6950 if (netif_running(netdev)) 6951 ixgbe_close_suspend(adapter); 6952 6953 ixgbe_clear_interrupt_scheme(adapter); 6954 rtnl_unlock(); 6955 6956 if (hw->mac.ops.stop_link_on_d3) 6957 hw->mac.ops.stop_link_on_d3(hw); 6958 6959 if (wufc) { 6960 u32 fctrl; 6961 6962 ixgbe_set_rx_mode(netdev); 6963 6964 /* enable the optics for 82599 SFP+ fiber as we can WoL */ 6965 if (hw->mac.ops.enable_tx_laser) 6966 hw->mac.ops.enable_tx_laser(hw); 6967 6968 /* enable the reception of multicast packets */ 6969 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 6970 fctrl |= IXGBE_FCTRL_MPE; 6971 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); 6972 6973 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL); 6974 ctrl |= IXGBE_CTRL_GIO_DIS; 6975 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl); 6976 6977 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc); 6978 } else { 6979 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0); 6980 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0); 6981 } 6982 6983 switch (hw->mac.type) { 6984 case ixgbe_mac_82598EB: 6985 pci_wake_from_d3(pdev, false); 6986 break; 6987 case ixgbe_mac_82599EB: 6988 case ixgbe_mac_X540: 6989 case ixgbe_mac_X550: 6990 case ixgbe_mac_X550EM_x: 6991 case ixgbe_mac_x550em_a: 6992 pci_wake_from_d3(pdev, !!wufc); 6993 break; 6994 default: 6995 break; 6996 } 6997 6998 *enable_wake = !!wufc; 6999 if (hw->phy.ops.set_phy_power && !*enable_wake) 7000 hw->phy.ops.set_phy_power(hw, false); 7001 7002 ixgbe_release_hw_control(adapter); 7003 7004 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) 7005 pci_disable_device(pdev); 7006 7007 return 0; 7008 } 7009 7010 static int __maybe_unused ixgbe_suspend(struct device *dev_d) 7011 { 7012 struct pci_dev *pdev = to_pci_dev(dev_d); 7013 int retval; 7014 bool wake; 7015 7016 retval = __ixgbe_shutdown(pdev, &wake); 7017 7018 device_set_wakeup_enable(dev_d, wake); 7019 7020 return retval; 7021 } 7022 7023 static void ixgbe_shutdown(struct pci_dev *pdev) 7024 { 7025 bool wake; 7026 7027 __ixgbe_shutdown(pdev, &wake); 7028 7029 if (system_state == SYSTEM_POWER_OFF) { 7030 pci_wake_from_d3(pdev, wake); 7031 pci_set_power_state(pdev, PCI_D3hot); 7032 } 7033 } 7034 7035 /** 7036 * ixgbe_update_stats - Update the board statistics counters. 7037 * @adapter: board private structure 7038 **/ 7039 void ixgbe_update_stats(struct ixgbe_adapter *adapter) 7040 { 7041 struct net_device *netdev = adapter->netdev; 7042 struct ixgbe_hw *hw = &adapter->hw; 7043 struct ixgbe_hw_stats *hwstats = &adapter->stats; 7044 u64 total_mpc = 0; 7045 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; 7046 u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0; 7047 u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0; 7048 u64 alloc_rx_page = 0; 7049 u64 bytes = 0, packets = 0, hw_csum_rx_error = 0; 7050 7051 if (test_bit(__IXGBE_DOWN, &adapter->state) || 7052 test_bit(__IXGBE_RESETTING, &adapter->state)) 7053 return; 7054 7055 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) { 7056 u64 rsc_count = 0; 7057 u64 rsc_flush = 0; 7058 for (i = 0; i < adapter->num_rx_queues; i++) { 7059 rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count; 7060 rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush; 7061 } 7062 adapter->rsc_total_count = rsc_count; 7063 adapter->rsc_total_flush = rsc_flush; 7064 } 7065 7066 for (i = 0; i < adapter->num_rx_queues; i++) { 7067 struct ixgbe_ring *rx_ring = READ_ONCE(adapter->rx_ring[i]); 7068 7069 if (!rx_ring) 7070 continue; 7071 non_eop_descs += rx_ring->rx_stats.non_eop_descs; 7072 alloc_rx_page += rx_ring->rx_stats.alloc_rx_page; 7073 alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed; 7074 alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed; 7075 hw_csum_rx_error += rx_ring->rx_stats.csum_err; 7076 bytes += rx_ring->stats.bytes; 7077 packets += rx_ring->stats.packets; 7078 } 7079 adapter->non_eop_descs = non_eop_descs; 7080 adapter->alloc_rx_page = alloc_rx_page; 7081 adapter->alloc_rx_page_failed = alloc_rx_page_failed; 7082 adapter->alloc_rx_buff_failed = alloc_rx_buff_failed; 7083 adapter->hw_csum_rx_error = hw_csum_rx_error; 7084 netdev->stats.rx_bytes = bytes; 7085 netdev->stats.rx_packets = packets; 7086 7087 bytes = 0; 7088 packets = 0; 7089 /* gather some stats to the adapter struct that are per queue */ 7090 for (i = 0; i < adapter->num_tx_queues; i++) { 7091 struct ixgbe_ring *tx_ring = READ_ONCE(adapter->tx_ring[i]); 7092 7093 if (!tx_ring) 7094 continue; 7095 restart_queue += tx_ring->tx_stats.restart_queue; 7096 tx_busy += tx_ring->tx_stats.tx_busy; 7097 bytes += tx_ring->stats.bytes; 7098 packets += tx_ring->stats.packets; 7099 } 7100 for (i = 0; i < adapter->num_xdp_queues; i++) { 7101 struct ixgbe_ring *xdp_ring = READ_ONCE(adapter->xdp_ring[i]); 7102 7103 if (!xdp_ring) 7104 continue; 7105 restart_queue += xdp_ring->tx_stats.restart_queue; 7106 tx_busy += xdp_ring->tx_stats.tx_busy; 7107 bytes += xdp_ring->stats.bytes; 7108 packets += xdp_ring->stats.packets; 7109 } 7110 adapter->restart_queue = restart_queue; 7111 adapter->tx_busy = tx_busy; 7112 netdev->stats.tx_bytes = bytes; 7113 netdev->stats.tx_packets = packets; 7114 7115 hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); 7116 7117 /* 8 register reads */ 7118 for (i = 0; i < 8; i++) { 7119 /* for packet buffers not used, the register should read 0 */ 7120 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); 7121 missed_rx += mpc; 7122 hwstats->mpc[i] += mpc; 7123 total_mpc += hwstats->mpc[i]; 7124 hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i)); 7125 hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i)); 7126 switch (hw->mac.type) { 7127 case ixgbe_mac_82598EB: 7128 hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); 7129 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i)); 7130 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i)); 7131 hwstats->pxonrxc[i] += 7132 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i)); 7133 break; 7134 case ixgbe_mac_82599EB: 7135 case ixgbe_mac_X540: 7136 case ixgbe_mac_X550: 7137 case ixgbe_mac_X550EM_x: 7138 case ixgbe_mac_x550em_a: 7139 hwstats->pxonrxc[i] += 7140 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i)); 7141 break; 7142 default: 7143 break; 7144 } 7145 } 7146 7147 /*16 register reads */ 7148 for (i = 0; i < 16; i++) { 7149 hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i)); 7150 hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i)); 7151 if ((hw->mac.type == ixgbe_mac_82599EB) || 7152 (hw->mac.type == ixgbe_mac_X540) || 7153 (hw->mac.type == ixgbe_mac_X550) || 7154 (hw->mac.type == ixgbe_mac_X550EM_x) || 7155 (hw->mac.type == ixgbe_mac_x550em_a)) { 7156 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC_L(i)); 7157 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); /* to clear */ 7158 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC_L(i)); 7159 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); /* to clear */ 7160 } 7161 } 7162 7163 hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); 7164 /* work around hardware counting issue */ 7165 hwstats->gprc -= missed_rx; 7166 7167 ixgbe_update_xoff_received(adapter); 7168 7169 /* 82598 hardware only has a 32 bit counter in the high register */ 7170 switch (hw->mac.type) { 7171 case ixgbe_mac_82598EB: 7172 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); 7173 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); 7174 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); 7175 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH); 7176 break; 7177 case ixgbe_mac_X540: 7178 case ixgbe_mac_X550: 7179 case ixgbe_mac_X550EM_x: 7180 case ixgbe_mac_x550em_a: 7181 /* OS2BMC stats are X540 and later */ 7182 hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC); 7183 hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC); 7184 hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC); 7185 hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC); 7186 fallthrough; 7187 case ixgbe_mac_82599EB: 7188 for (i = 0; i < 16; i++) 7189 adapter->hw_rx_no_dma_resources += 7190 IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); 7191 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL); 7192 IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */ 7193 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL); 7194 IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */ 7195 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL); 7196 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */ 7197 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); 7198 hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH); 7199 hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS); 7200 #ifdef IXGBE_FCOE 7201 hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC); 7202 hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC); 7203 hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC); 7204 hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC); 7205 hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC); 7206 hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC); 7207 /* Add up per cpu counters for total ddp aloc fail */ 7208 if (adapter->fcoe.ddp_pool) { 7209 struct ixgbe_fcoe *fcoe = &adapter->fcoe; 7210 struct ixgbe_fcoe_ddp_pool *ddp_pool; 7211 unsigned int cpu; 7212 u64 noddp = 0, noddp_ext_buff = 0; 7213 for_each_possible_cpu(cpu) { 7214 ddp_pool = per_cpu_ptr(fcoe->ddp_pool, cpu); 7215 noddp += ddp_pool->noddp; 7216 noddp_ext_buff += ddp_pool->noddp_ext_buff; 7217 } 7218 hwstats->fcoe_noddp = noddp; 7219 hwstats->fcoe_noddp_ext_buff = noddp_ext_buff; 7220 } 7221 #endif /* IXGBE_FCOE */ 7222 break; 7223 default: 7224 break; 7225 } 7226 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); 7227 hwstats->bprc += bprc; 7228 hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); 7229 if (hw->mac.type == ixgbe_mac_82598EB) 7230 hwstats->mprc -= bprc; 7231 hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC); 7232 hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); 7233 hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); 7234 hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); 7235 hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); 7236 hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); 7237 hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); 7238 hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); 7239 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); 7240 hwstats->lxontxc += lxon; 7241 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); 7242 hwstats->lxofftxc += lxoff; 7243 hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); 7244 hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); 7245 /* 7246 * 82598 errata - tx of flow control packets is included in tx counters 7247 */ 7248 xon_off_tot = lxon + lxoff; 7249 hwstats->gptc -= xon_off_tot; 7250 hwstats->mptc -= xon_off_tot; 7251 hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); 7252 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC); 7253 hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC); 7254 hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC); 7255 hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR); 7256 hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); 7257 hwstats->ptc64 -= xon_off_tot; 7258 hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); 7259 hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); 7260 hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); 7261 hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); 7262 hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); 7263 hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); 7264 7265 /* Fill out the OS statistics structure */ 7266 netdev->stats.multicast = hwstats->mprc; 7267 7268 /* Rx Errors */ 7269 netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec; 7270 netdev->stats.rx_dropped = 0; 7271 netdev->stats.rx_length_errors = hwstats->rlec; 7272 netdev->stats.rx_crc_errors = hwstats->crcerrs; 7273 netdev->stats.rx_missed_errors = total_mpc; 7274 } 7275 7276 /** 7277 * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table 7278 * @adapter: pointer to the device adapter structure 7279 **/ 7280 static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter) 7281 { 7282 struct ixgbe_hw *hw = &adapter->hw; 7283 int i; 7284 7285 if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT)) 7286 return; 7287 7288 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 7289 7290 /* if interface is down do nothing */ 7291 if (test_bit(__IXGBE_DOWN, &adapter->state)) 7292 return; 7293 7294 /* do nothing if we are not using signature filters */ 7295 if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)) 7296 return; 7297 7298 adapter->fdir_overflow++; 7299 7300 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) { 7301 for (i = 0; i < adapter->num_tx_queues; i++) 7302 set_bit(__IXGBE_TX_FDIR_INIT_DONE, 7303 &(adapter->tx_ring[i]->state)); 7304 for (i = 0; i < adapter->num_xdp_queues; i++) 7305 set_bit(__IXGBE_TX_FDIR_INIT_DONE, 7306 &adapter->xdp_ring[i]->state); 7307 /* re-enable flow director interrupts */ 7308 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR); 7309 } else { 7310 e_err(probe, "failed to finish FDIR re-initialization, " 7311 "ignored adding FDIR ATR filters\n"); 7312 } 7313 } 7314 7315 /** 7316 * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts 7317 * @adapter: pointer to the device adapter structure 7318 * 7319 * This function serves two purposes. First it strobes the interrupt lines 7320 * in order to make certain interrupts are occurring. Secondly it sets the 7321 * bits needed to check for TX hangs. As a result we should immediately 7322 * determine if a hang has occurred. 7323 */ 7324 static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter) 7325 { 7326 struct ixgbe_hw *hw = &adapter->hw; 7327 u64 eics = 0; 7328 int i; 7329 7330 /* If we're down, removing or resetting, just bail */ 7331 if (test_bit(__IXGBE_DOWN, &adapter->state) || 7332 test_bit(__IXGBE_REMOVING, &adapter->state) || 7333 test_bit(__IXGBE_RESETTING, &adapter->state)) 7334 return; 7335 7336 /* Force detection of hung controller */ 7337 if (netif_carrier_ok(adapter->netdev)) { 7338 for (i = 0; i < adapter->num_tx_queues; i++) 7339 set_check_for_tx_hang(adapter->tx_ring[i]); 7340 for (i = 0; i < adapter->num_xdp_queues; i++) 7341 set_check_for_tx_hang(adapter->xdp_ring[i]); 7342 } 7343 7344 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { 7345 /* 7346 * for legacy and MSI interrupts don't set any bits 7347 * that are enabled for EIAM, because this operation 7348 * would set *both* EIMS and EICS for any bit in EIAM 7349 */ 7350 IXGBE_WRITE_REG(hw, IXGBE_EICS, 7351 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); 7352 } else { 7353 /* get one bit for every active tx/rx interrupt vector */ 7354 for (i = 0; i < adapter->num_q_vectors; i++) { 7355 struct ixgbe_q_vector *qv = adapter->q_vector[i]; 7356 if (qv->rx.ring || qv->tx.ring) 7357 eics |= BIT_ULL(i); 7358 } 7359 } 7360 7361 /* Cause software interrupt to ensure rings are cleaned */ 7362 ixgbe_irq_rearm_queues(adapter, eics); 7363 } 7364 7365 /** 7366 * ixgbe_watchdog_update_link - update the link status 7367 * @adapter: pointer to the device adapter structure 7368 **/ 7369 static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter) 7370 { 7371 struct ixgbe_hw *hw = &adapter->hw; 7372 u32 link_speed = adapter->link_speed; 7373 bool link_up = adapter->link_up; 7374 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 7375 7376 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)) 7377 return; 7378 7379 if (hw->mac.ops.check_link) { 7380 hw->mac.ops.check_link(hw, &link_speed, &link_up, false); 7381 } else { 7382 /* always assume link is up, if no check link function */ 7383 link_speed = IXGBE_LINK_SPEED_10GB_FULL; 7384 link_up = true; 7385 } 7386 7387 if (adapter->ixgbe_ieee_pfc) 7388 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 7389 7390 if (link_up && !((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && pfc_en)) { 7391 hw->mac.ops.fc_enable(hw); 7392 ixgbe_set_rx_drop_en(adapter); 7393 } 7394 7395 if (link_up || 7396 time_after(jiffies, (adapter->link_check_timeout + 7397 IXGBE_TRY_LINK_TIMEOUT))) { 7398 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; 7399 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC); 7400 IXGBE_WRITE_FLUSH(hw); 7401 } 7402 7403 adapter->link_up = link_up; 7404 adapter->link_speed = link_speed; 7405 } 7406 7407 static void ixgbe_update_default_up(struct ixgbe_adapter *adapter) 7408 { 7409 #ifdef CONFIG_IXGBE_DCB 7410 struct net_device *netdev = adapter->netdev; 7411 struct dcb_app app = { 7412 .selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE, 7413 .protocol = 0, 7414 }; 7415 u8 up = 0; 7416 7417 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) 7418 up = dcb_ieee_getapp_mask(netdev, &app); 7419 7420 adapter->default_up = (up > 1) ? (ffs(up) - 1) : 0; 7421 #endif 7422 } 7423 7424 /** 7425 * ixgbe_watchdog_link_is_up - update netif_carrier status and 7426 * print link up message 7427 * @adapter: pointer to the device adapter structure 7428 **/ 7429 static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter) 7430 { 7431 struct net_device *netdev = adapter->netdev; 7432 struct ixgbe_hw *hw = &adapter->hw; 7433 u32 link_speed = adapter->link_speed; 7434 const char *speed_str; 7435 bool flow_rx, flow_tx; 7436 7437 /* only continue if link was previously down */ 7438 if (netif_carrier_ok(netdev)) 7439 return; 7440 7441 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; 7442 7443 switch (hw->mac.type) { 7444 case ixgbe_mac_82598EB: { 7445 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 7446 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS); 7447 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE); 7448 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X); 7449 } 7450 break; 7451 case ixgbe_mac_X540: 7452 case ixgbe_mac_X550: 7453 case ixgbe_mac_X550EM_x: 7454 case ixgbe_mac_x550em_a: 7455 case ixgbe_mac_82599EB: { 7456 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN); 7457 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG); 7458 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE); 7459 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X); 7460 } 7461 break; 7462 default: 7463 flow_tx = false; 7464 flow_rx = false; 7465 break; 7466 } 7467 7468 adapter->last_rx_ptp_check = jiffies; 7469 7470 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 7471 ixgbe_ptp_start_cyclecounter(adapter); 7472 7473 switch (link_speed) { 7474 case IXGBE_LINK_SPEED_10GB_FULL: 7475 speed_str = "10 Gbps"; 7476 break; 7477 case IXGBE_LINK_SPEED_5GB_FULL: 7478 speed_str = "5 Gbps"; 7479 break; 7480 case IXGBE_LINK_SPEED_2_5GB_FULL: 7481 speed_str = "2.5 Gbps"; 7482 break; 7483 case IXGBE_LINK_SPEED_1GB_FULL: 7484 speed_str = "1 Gbps"; 7485 break; 7486 case IXGBE_LINK_SPEED_100_FULL: 7487 speed_str = "100 Mbps"; 7488 break; 7489 case IXGBE_LINK_SPEED_10_FULL: 7490 speed_str = "10 Mbps"; 7491 break; 7492 default: 7493 speed_str = "unknown speed"; 7494 break; 7495 } 7496 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n", speed_str, 7497 ((flow_rx && flow_tx) ? "RX/TX" : 7498 (flow_rx ? "RX" : 7499 (flow_tx ? "TX" : "None")))); 7500 7501 netif_carrier_on(netdev); 7502 ixgbe_check_vf_rate_limit(adapter); 7503 7504 /* enable transmits */ 7505 netif_tx_wake_all_queues(adapter->netdev); 7506 7507 /* update the default user priority for VFs */ 7508 ixgbe_update_default_up(adapter); 7509 7510 /* ping all the active vfs to let them know link has changed */ 7511 ixgbe_ping_all_vfs(adapter); 7512 } 7513 7514 /** 7515 * ixgbe_watchdog_link_is_down - update netif_carrier status and 7516 * print link down message 7517 * @adapter: pointer to the adapter structure 7518 **/ 7519 static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *adapter) 7520 { 7521 struct net_device *netdev = adapter->netdev; 7522 struct ixgbe_hw *hw = &adapter->hw; 7523 7524 adapter->link_up = false; 7525 adapter->link_speed = 0; 7526 7527 /* only continue if link was up previously */ 7528 if (!netif_carrier_ok(netdev)) 7529 return; 7530 7531 /* poll for SFP+ cable when link is down */ 7532 if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB) 7533 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; 7534 7535 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 7536 ixgbe_ptp_start_cyclecounter(adapter); 7537 7538 e_info(drv, "NIC Link is Down\n"); 7539 netif_carrier_off(netdev); 7540 7541 /* ping all the active vfs to let them know link has changed */ 7542 ixgbe_ping_all_vfs(adapter); 7543 } 7544 7545 static bool ixgbe_ring_tx_pending(struct ixgbe_adapter *adapter) 7546 { 7547 int i; 7548 7549 for (i = 0; i < adapter->num_tx_queues; i++) { 7550 struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; 7551 7552 if (tx_ring->next_to_use != tx_ring->next_to_clean) 7553 return true; 7554 } 7555 7556 for (i = 0; i < adapter->num_xdp_queues; i++) { 7557 struct ixgbe_ring *ring = adapter->xdp_ring[i]; 7558 7559 if (ring->next_to_use != ring->next_to_clean) 7560 return true; 7561 } 7562 7563 return false; 7564 } 7565 7566 static bool ixgbe_vf_tx_pending(struct ixgbe_adapter *adapter) 7567 { 7568 struct ixgbe_hw *hw = &adapter->hw; 7569 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 7570 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 7571 7572 int i, j; 7573 7574 if (!adapter->num_vfs) 7575 return false; 7576 7577 /* resetting the PF is only needed for MAC before X550 */ 7578 if (hw->mac.type >= ixgbe_mac_X550) 7579 return false; 7580 7581 for (i = 0; i < adapter->num_vfs; i++) { 7582 for (j = 0; j < q_per_pool; j++) { 7583 u32 h, t; 7584 7585 h = IXGBE_READ_REG(hw, IXGBE_PVFTDHN(q_per_pool, i, j)); 7586 t = IXGBE_READ_REG(hw, IXGBE_PVFTDTN(q_per_pool, i, j)); 7587 7588 if (h != t) 7589 return true; 7590 } 7591 } 7592 7593 return false; 7594 } 7595 7596 /** 7597 * ixgbe_watchdog_flush_tx - flush queues on link down 7598 * @adapter: pointer to the device adapter structure 7599 **/ 7600 static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter) 7601 { 7602 if (!netif_carrier_ok(adapter->netdev)) { 7603 if (ixgbe_ring_tx_pending(adapter) || 7604 ixgbe_vf_tx_pending(adapter)) { 7605 /* We've lost link, so the controller stops DMA, 7606 * but we've got queued Tx work that's never going 7607 * to get done, so reset controller to flush Tx. 7608 * (Do the reset outside of interrupt context). 7609 */ 7610 e_warn(drv, "initiating reset to clear Tx work after link loss\n"); 7611 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 7612 } 7613 } 7614 } 7615 7616 #ifdef CONFIG_PCI_IOV 7617 static void ixgbe_bad_vf_abort(struct ixgbe_adapter *adapter, u32 vf) 7618 { 7619 struct ixgbe_hw *hw = &adapter->hw; 7620 7621 if (adapter->hw.mac.type == ixgbe_mac_82599EB && 7622 adapter->flags2 & IXGBE_FLAG2_AUTO_DISABLE_VF) { 7623 adapter->vfinfo[vf].primary_abort_count++; 7624 if (adapter->vfinfo[vf].primary_abort_count == 7625 IXGBE_PRIMARY_ABORT_LIMIT) { 7626 ixgbe_set_vf_link_state(adapter, vf, 7627 IFLA_VF_LINK_STATE_DISABLE); 7628 adapter->vfinfo[vf].primary_abort_count = 0; 7629 7630 e_info(drv, 7631 "Malicious Driver Detection event detected on PF %d VF %d MAC: %pM mdd-disable-vf=on", 7632 hw->bus.func, vf, 7633 adapter->vfinfo[vf].vf_mac_addresses); 7634 } 7635 } 7636 } 7637 7638 static void ixgbe_check_for_bad_vf(struct ixgbe_adapter *adapter) 7639 { 7640 struct ixgbe_hw *hw = &adapter->hw; 7641 struct pci_dev *pdev = adapter->pdev; 7642 unsigned int vf; 7643 u32 gpc; 7644 7645 if (!(netif_carrier_ok(adapter->netdev))) 7646 return; 7647 7648 gpc = IXGBE_READ_REG(hw, IXGBE_TXDGPC); 7649 if (gpc) /* If incrementing then no need for the check below */ 7650 return; 7651 /* Check to see if a bad DMA write target from an errant or 7652 * malicious VF has caused a PCIe error. If so then we can 7653 * issue a VFLR to the offending VF(s) and then resume without 7654 * requesting a full slot reset. 7655 */ 7656 7657 if (!pdev) 7658 return; 7659 7660 /* check status reg for all VFs owned by this PF */ 7661 for (vf = 0; vf < adapter->num_vfs; ++vf) { 7662 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev; 7663 u16 status_reg; 7664 7665 if (!vfdev) 7666 continue; 7667 pci_read_config_word(vfdev, PCI_STATUS, &status_reg); 7668 if (status_reg != IXGBE_FAILED_READ_CFG_WORD && 7669 status_reg & PCI_STATUS_REC_MASTER_ABORT) { 7670 ixgbe_bad_vf_abort(adapter, vf); 7671 pcie_flr(vfdev); 7672 } 7673 } 7674 } 7675 7676 static void ixgbe_spoof_check(struct ixgbe_adapter *adapter) 7677 { 7678 u32 ssvpc; 7679 7680 /* Do not perform spoof check for 82598 or if not in IOV mode */ 7681 if (adapter->hw.mac.type == ixgbe_mac_82598EB || 7682 adapter->num_vfs == 0) 7683 return; 7684 7685 ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC); 7686 7687 /* 7688 * ssvpc register is cleared on read, if zero then no 7689 * spoofed packets in the last interval. 7690 */ 7691 if (!ssvpc) 7692 return; 7693 7694 e_warn(drv, "%u Spoofed packets detected\n", ssvpc); 7695 } 7696 #else 7697 static void ixgbe_spoof_check(struct ixgbe_adapter __always_unused *adapter) 7698 { 7699 } 7700 7701 static void 7702 ixgbe_check_for_bad_vf(struct ixgbe_adapter __always_unused *adapter) 7703 { 7704 } 7705 #endif /* CONFIG_PCI_IOV */ 7706 7707 7708 /** 7709 * ixgbe_watchdog_subtask - check and bring link up 7710 * @adapter: pointer to the device adapter structure 7711 **/ 7712 static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter) 7713 { 7714 /* if interface is down, removing or resetting, do nothing */ 7715 if (test_bit(__IXGBE_DOWN, &adapter->state) || 7716 test_bit(__IXGBE_REMOVING, &adapter->state) || 7717 test_bit(__IXGBE_RESETTING, &adapter->state)) 7718 return; 7719 7720 ixgbe_watchdog_update_link(adapter); 7721 7722 if (adapter->link_up) 7723 ixgbe_watchdog_link_is_up(adapter); 7724 else 7725 ixgbe_watchdog_link_is_down(adapter); 7726 7727 ixgbe_check_for_bad_vf(adapter); 7728 ixgbe_spoof_check(adapter); 7729 ixgbe_update_stats(adapter); 7730 7731 ixgbe_watchdog_flush_tx(adapter); 7732 } 7733 7734 /** 7735 * ixgbe_sfp_detection_subtask - poll for SFP+ cable 7736 * @adapter: the ixgbe adapter structure 7737 **/ 7738 static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter) 7739 { 7740 struct ixgbe_hw *hw = &adapter->hw; 7741 s32 err; 7742 7743 /* not searching for SFP so there is nothing to do here */ 7744 if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) && 7745 !(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) 7746 return; 7747 7748 if (adapter->sfp_poll_time && 7749 time_after(adapter->sfp_poll_time, jiffies)) 7750 return; /* If not yet time to poll for SFP */ 7751 7752 /* someone else is in init, wait until next service event */ 7753 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 7754 return; 7755 7756 adapter->sfp_poll_time = jiffies + IXGBE_SFP_POLL_JIFFIES - 1; 7757 7758 err = hw->phy.ops.identify_sfp(hw); 7759 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) 7760 goto sfp_out; 7761 7762 if (err == IXGBE_ERR_SFP_NOT_PRESENT) { 7763 /* If no cable is present, then we need to reset 7764 * the next time we find a good cable. */ 7765 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 7766 } 7767 7768 /* exit on error */ 7769 if (err) 7770 goto sfp_out; 7771 7772 /* exit if reset not needed */ 7773 if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) 7774 goto sfp_out; 7775 7776 adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET; 7777 7778 /* 7779 * A module may be identified correctly, but the EEPROM may not have 7780 * support for that module. setup_sfp() will fail in that case, so 7781 * we should not allow that module to load. 7782 */ 7783 if (hw->mac.type == ixgbe_mac_82598EB) 7784 err = hw->phy.ops.reset(hw); 7785 else 7786 err = hw->mac.ops.setup_sfp(hw); 7787 7788 if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) 7789 goto sfp_out; 7790 7791 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; 7792 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type); 7793 7794 sfp_out: 7795 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 7796 7797 if ((err == IXGBE_ERR_SFP_NOT_SUPPORTED) && 7798 (adapter->netdev->reg_state == NETREG_REGISTERED)) { 7799 e_dev_err("failed to initialize because an unsupported " 7800 "SFP+ module type was detected.\n"); 7801 e_dev_err("Reload the driver after installing a " 7802 "supported module.\n"); 7803 unregister_netdev(adapter->netdev); 7804 } 7805 } 7806 7807 /** 7808 * ixgbe_sfp_link_config_subtask - set up link SFP after module install 7809 * @adapter: the ixgbe adapter structure 7810 **/ 7811 static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter) 7812 { 7813 struct ixgbe_hw *hw = &adapter->hw; 7814 u32 cap_speed; 7815 u32 speed; 7816 bool autoneg = false; 7817 7818 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG)) 7819 return; 7820 7821 /* someone else is in init, wait until next service event */ 7822 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 7823 return; 7824 7825 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; 7826 7827 hw->mac.ops.get_link_capabilities(hw, &cap_speed, &autoneg); 7828 7829 /* advertise highest capable link speed */ 7830 if (!autoneg && (cap_speed & IXGBE_LINK_SPEED_10GB_FULL)) 7831 speed = IXGBE_LINK_SPEED_10GB_FULL; 7832 else 7833 speed = cap_speed & (IXGBE_LINK_SPEED_10GB_FULL | 7834 IXGBE_LINK_SPEED_1GB_FULL); 7835 7836 if (hw->mac.ops.setup_link) 7837 hw->mac.ops.setup_link(hw, speed, true); 7838 7839 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 7840 adapter->link_check_timeout = jiffies; 7841 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 7842 } 7843 7844 /** 7845 * ixgbe_service_timer - Timer Call-back 7846 * @t: pointer to timer_list structure 7847 **/ 7848 static void ixgbe_service_timer(struct timer_list *t) 7849 { 7850 struct ixgbe_adapter *adapter = from_timer(adapter, t, service_timer); 7851 unsigned long next_event_offset; 7852 7853 /* poll faster when waiting for link */ 7854 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) 7855 next_event_offset = HZ / 10; 7856 else 7857 next_event_offset = HZ * 2; 7858 7859 /* Reset the timer */ 7860 mod_timer(&adapter->service_timer, next_event_offset + jiffies); 7861 7862 ixgbe_service_event_schedule(adapter); 7863 } 7864 7865 static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter *adapter) 7866 { 7867 struct ixgbe_hw *hw = &adapter->hw; 7868 u32 status; 7869 7870 if (!(adapter->flags2 & IXGBE_FLAG2_PHY_INTERRUPT)) 7871 return; 7872 7873 adapter->flags2 &= ~IXGBE_FLAG2_PHY_INTERRUPT; 7874 7875 if (!hw->phy.ops.handle_lasi) 7876 return; 7877 7878 status = hw->phy.ops.handle_lasi(&adapter->hw); 7879 if (status != IXGBE_ERR_OVERTEMP) 7880 return; 7881 7882 e_crit(drv, "%s\n", ixgbe_overheat_msg); 7883 } 7884 7885 static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter) 7886 { 7887 if (!test_and_clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state)) 7888 return; 7889 7890 rtnl_lock(); 7891 /* If we're already down, removing or resetting, just bail */ 7892 if (test_bit(__IXGBE_DOWN, &adapter->state) || 7893 test_bit(__IXGBE_REMOVING, &adapter->state) || 7894 test_bit(__IXGBE_RESETTING, &adapter->state)) { 7895 rtnl_unlock(); 7896 return; 7897 } 7898 7899 ixgbe_dump(adapter); 7900 netdev_err(adapter->netdev, "Reset adapter\n"); 7901 adapter->tx_timeout_count++; 7902 7903 ixgbe_reinit_locked(adapter); 7904 rtnl_unlock(); 7905 } 7906 7907 /** 7908 * ixgbe_check_fw_error - Check firmware for errors 7909 * @adapter: the adapter private structure 7910 * 7911 * Check firmware errors in register FWSM 7912 */ 7913 static bool ixgbe_check_fw_error(struct ixgbe_adapter *adapter) 7914 { 7915 struct ixgbe_hw *hw = &adapter->hw; 7916 u32 fwsm; 7917 7918 /* read fwsm.ext_err_ind register and log errors */ 7919 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw)); 7920 7921 if (fwsm & IXGBE_FWSM_EXT_ERR_IND_MASK || 7922 !(fwsm & IXGBE_FWSM_FW_VAL_BIT)) 7923 e_dev_warn("Warning firmware error detected FWSM: 0x%08X\n", 7924 fwsm); 7925 7926 if (hw->mac.ops.fw_recovery_mode && hw->mac.ops.fw_recovery_mode(hw)) { 7927 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"); 7928 return true; 7929 } 7930 7931 return false; 7932 } 7933 7934 /** 7935 * ixgbe_service_task - manages and runs subtasks 7936 * @work: pointer to work_struct containing our data 7937 **/ 7938 static void ixgbe_service_task(struct work_struct *work) 7939 { 7940 struct ixgbe_adapter *adapter = container_of(work, 7941 struct ixgbe_adapter, 7942 service_task); 7943 if (ixgbe_removed(adapter->hw.hw_addr)) { 7944 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 7945 rtnl_lock(); 7946 ixgbe_down(adapter); 7947 rtnl_unlock(); 7948 } 7949 ixgbe_service_event_complete(adapter); 7950 return; 7951 } 7952 if (ixgbe_check_fw_error(adapter)) { 7953 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 7954 unregister_netdev(adapter->netdev); 7955 ixgbe_service_event_complete(adapter); 7956 return; 7957 } 7958 ixgbe_reset_subtask(adapter); 7959 ixgbe_phy_interrupt_subtask(adapter); 7960 ixgbe_sfp_detection_subtask(adapter); 7961 ixgbe_sfp_link_config_subtask(adapter); 7962 ixgbe_check_overtemp_subtask(adapter); 7963 ixgbe_watchdog_subtask(adapter); 7964 ixgbe_fdir_reinit_subtask(adapter); 7965 ixgbe_check_hang_subtask(adapter); 7966 7967 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) { 7968 ixgbe_ptp_overflow_check(adapter); 7969 if (adapter->flags & IXGBE_FLAG_RX_HWTSTAMP_IN_REGISTER) 7970 ixgbe_ptp_rx_hang(adapter); 7971 ixgbe_ptp_tx_hang(adapter); 7972 } 7973 7974 ixgbe_service_event_complete(adapter); 7975 } 7976 7977 static int ixgbe_tso(struct ixgbe_ring *tx_ring, 7978 struct ixgbe_tx_buffer *first, 7979 u8 *hdr_len, 7980 struct ixgbe_ipsec_tx_data *itd) 7981 { 7982 u32 vlan_macip_lens, type_tucmd, mss_l4len_idx; 7983 struct sk_buff *skb = first->skb; 7984 union { 7985 struct iphdr *v4; 7986 struct ipv6hdr *v6; 7987 unsigned char *hdr; 7988 } ip; 7989 union { 7990 struct tcphdr *tcp; 7991 struct udphdr *udp; 7992 unsigned char *hdr; 7993 } l4; 7994 u32 paylen, l4_offset; 7995 u32 fceof_saidx = 0; 7996 int err; 7997 7998 if (skb->ip_summed != CHECKSUM_PARTIAL) 7999 return 0; 8000 8001 if (!skb_is_gso(skb)) 8002 return 0; 8003 8004 err = skb_cow_head(skb, 0); 8005 if (err < 0) 8006 return err; 8007 8008 if (eth_p_mpls(first->protocol)) 8009 ip.hdr = skb_inner_network_header(skb); 8010 else 8011 ip.hdr = skb_network_header(skb); 8012 l4.hdr = skb_checksum_start(skb); 8013 8014 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ 8015 type_tucmd = (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ? 8016 IXGBE_ADVTXD_TUCMD_L4T_UDP : IXGBE_ADVTXD_TUCMD_L4T_TCP; 8017 8018 /* initialize outer IP header fields */ 8019 if (ip.v4->version == 4) { 8020 unsigned char *csum_start = skb_checksum_start(skb); 8021 unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4); 8022 int len = csum_start - trans_start; 8023 8024 /* IP header will have to cancel out any data that 8025 * is not a part of the outer IP header, so set to 8026 * a reverse csum if needed, else init check to 0. 8027 */ 8028 ip.v4->check = (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) ? 8029 csum_fold(csum_partial(trans_start, 8030 len, 0)) : 0; 8031 type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4; 8032 8033 ip.v4->tot_len = 0; 8034 first->tx_flags |= IXGBE_TX_FLAGS_TSO | 8035 IXGBE_TX_FLAGS_CSUM | 8036 IXGBE_TX_FLAGS_IPV4; 8037 } else { 8038 ip.v6->payload_len = 0; 8039 first->tx_flags |= IXGBE_TX_FLAGS_TSO | 8040 IXGBE_TX_FLAGS_CSUM; 8041 } 8042 8043 /* determine offset of inner transport header */ 8044 l4_offset = l4.hdr - skb->data; 8045 8046 /* remove payload length from inner checksum */ 8047 paylen = skb->len - l4_offset; 8048 8049 if (type_tucmd & IXGBE_ADVTXD_TUCMD_L4T_TCP) { 8050 /* compute length of segmentation header */ 8051 *hdr_len = (l4.tcp->doff * 4) + l4_offset; 8052 csum_replace_by_diff(&l4.tcp->check, 8053 (__force __wsum)htonl(paylen)); 8054 } else { 8055 /* compute length of segmentation header */ 8056 *hdr_len = sizeof(*l4.udp) + l4_offset; 8057 csum_replace_by_diff(&l4.udp->check, 8058 (__force __wsum)htonl(paylen)); 8059 } 8060 8061 /* update gso size and bytecount with header size */ 8062 first->gso_segs = skb_shinfo(skb)->gso_segs; 8063 first->bytecount += (first->gso_segs - 1) * *hdr_len; 8064 8065 /* mss_l4len_id: use 0 as index for TSO */ 8066 mss_l4len_idx = (*hdr_len - l4_offset) << IXGBE_ADVTXD_L4LEN_SHIFT; 8067 mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT; 8068 8069 fceof_saidx |= itd->sa_idx; 8070 type_tucmd |= itd->flags | itd->trailer_len; 8071 8072 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */ 8073 vlan_macip_lens = l4.hdr - ip.hdr; 8074 vlan_macip_lens |= (ip.hdr - skb->data) << IXGBE_ADVTXD_MACLEN_SHIFT; 8075 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; 8076 8077 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, 8078 mss_l4len_idx); 8079 8080 return 1; 8081 } 8082 8083 static void ixgbe_tx_csum(struct ixgbe_ring *tx_ring, 8084 struct ixgbe_tx_buffer *first, 8085 struct ixgbe_ipsec_tx_data *itd) 8086 { 8087 struct sk_buff *skb = first->skb; 8088 u32 vlan_macip_lens = 0; 8089 u32 fceof_saidx = 0; 8090 u32 type_tucmd = 0; 8091 8092 if (skb->ip_summed != CHECKSUM_PARTIAL) { 8093 csum_failed: 8094 if (!(first->tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | 8095 IXGBE_TX_FLAGS_CC))) 8096 return; 8097 goto no_csum; 8098 } 8099 8100 switch (skb->csum_offset) { 8101 case offsetof(struct tcphdr, check): 8102 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP; 8103 fallthrough; 8104 case offsetof(struct udphdr, check): 8105 break; 8106 case offsetof(struct sctphdr, checksum): 8107 /* validate that this is actually an SCTP request */ 8108 if (skb_csum_is_sctp(skb)) { 8109 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_SCTP; 8110 break; 8111 } 8112 fallthrough; 8113 default: 8114 skb_checksum_help(skb); 8115 goto csum_failed; 8116 } 8117 8118 /* update TX checksum flag */ 8119 first->tx_flags |= IXGBE_TX_FLAGS_CSUM; 8120 vlan_macip_lens = skb_checksum_start_offset(skb) - 8121 skb_network_offset(skb); 8122 no_csum: 8123 /* vlan_macip_lens: MACLEN, VLAN tag */ 8124 vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT; 8125 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; 8126 8127 fceof_saidx |= itd->sa_idx; 8128 type_tucmd |= itd->flags | itd->trailer_len; 8129 8130 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, 0); 8131 } 8132 8133 #define IXGBE_SET_FLAG(_input, _flag, _result) \ 8134 ((_flag <= _result) ? \ 8135 ((u32)(_input & _flag) * (_result / _flag)) : \ 8136 ((u32)(_input & _flag) / (_flag / _result))) 8137 8138 static u32 ixgbe_tx_cmd_type(struct sk_buff *skb, u32 tx_flags) 8139 { 8140 /* set type for advanced descriptor with frame checksum insertion */ 8141 u32 cmd_type = IXGBE_ADVTXD_DTYP_DATA | 8142 IXGBE_ADVTXD_DCMD_DEXT | 8143 IXGBE_ADVTXD_DCMD_IFCS; 8144 8145 /* set HW vlan bit if vlan is present */ 8146 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_HW_VLAN, 8147 IXGBE_ADVTXD_DCMD_VLE); 8148 8149 /* set segmentation enable bits for TSO/FSO */ 8150 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSO, 8151 IXGBE_ADVTXD_DCMD_TSE); 8152 8153 /* set timestamp bit if present */ 8154 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSTAMP, 8155 IXGBE_ADVTXD_MAC_TSTAMP); 8156 8157 /* insert frame checksum */ 8158 cmd_type ^= IXGBE_SET_FLAG(skb->no_fcs, 1, IXGBE_ADVTXD_DCMD_IFCS); 8159 8160 return cmd_type; 8161 } 8162 8163 static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc, 8164 u32 tx_flags, unsigned int paylen) 8165 { 8166 u32 olinfo_status = paylen << IXGBE_ADVTXD_PAYLEN_SHIFT; 8167 8168 /* enable L4 checksum for TSO and TX checksum offload */ 8169 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8170 IXGBE_TX_FLAGS_CSUM, 8171 IXGBE_ADVTXD_POPTS_TXSM); 8172 8173 /* enable IPv4 checksum for TSO */ 8174 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8175 IXGBE_TX_FLAGS_IPV4, 8176 IXGBE_ADVTXD_POPTS_IXSM); 8177 8178 /* enable IPsec */ 8179 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8180 IXGBE_TX_FLAGS_IPSEC, 8181 IXGBE_ADVTXD_POPTS_IPSEC); 8182 8183 /* 8184 * Check Context must be set if Tx switch is enabled, which it 8185 * always is for case where virtual functions are running 8186 */ 8187 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8188 IXGBE_TX_FLAGS_CC, 8189 IXGBE_ADVTXD_CC); 8190 8191 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); 8192 } 8193 8194 static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) 8195 { 8196 netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index); 8197 8198 /* Herbert's original patch had: 8199 * smp_mb__after_netif_stop_queue(); 8200 * but since that doesn't exist yet, just open code it. 8201 */ 8202 smp_mb(); 8203 8204 /* We need to check again in a case another CPU has just 8205 * made room available. 8206 */ 8207 if (likely(ixgbe_desc_unused(tx_ring) < size)) 8208 return -EBUSY; 8209 8210 /* A reprieve! - use start_queue because it doesn't call schedule */ 8211 netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index); 8212 ++tx_ring->tx_stats.restart_queue; 8213 return 0; 8214 } 8215 8216 static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) 8217 { 8218 if (likely(ixgbe_desc_unused(tx_ring) >= size)) 8219 return 0; 8220 8221 return __ixgbe_maybe_stop_tx(tx_ring, size); 8222 } 8223 8224 static int ixgbe_tx_map(struct ixgbe_ring *tx_ring, 8225 struct ixgbe_tx_buffer *first, 8226 const u8 hdr_len) 8227 { 8228 struct sk_buff *skb = first->skb; 8229 struct ixgbe_tx_buffer *tx_buffer; 8230 union ixgbe_adv_tx_desc *tx_desc; 8231 skb_frag_t *frag; 8232 dma_addr_t dma; 8233 unsigned int data_len, size; 8234 u32 tx_flags = first->tx_flags; 8235 u32 cmd_type = ixgbe_tx_cmd_type(skb, tx_flags); 8236 u16 i = tx_ring->next_to_use; 8237 8238 tx_desc = IXGBE_TX_DESC(tx_ring, i); 8239 8240 ixgbe_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len); 8241 8242 size = skb_headlen(skb); 8243 data_len = skb->data_len; 8244 8245 #ifdef IXGBE_FCOE 8246 if (tx_flags & IXGBE_TX_FLAGS_FCOE) { 8247 if (data_len < sizeof(struct fcoe_crc_eof)) { 8248 size -= sizeof(struct fcoe_crc_eof) - data_len; 8249 data_len = 0; 8250 } else { 8251 data_len -= sizeof(struct fcoe_crc_eof); 8252 } 8253 } 8254 8255 #endif 8256 dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); 8257 8258 tx_buffer = first; 8259 8260 for (frag = &skb_shinfo(skb)->frags[0];; frag++) { 8261 if (dma_mapping_error(tx_ring->dev, dma)) 8262 goto dma_error; 8263 8264 /* record length, and DMA address */ 8265 dma_unmap_len_set(tx_buffer, len, size); 8266 dma_unmap_addr_set(tx_buffer, dma, dma); 8267 8268 tx_desc->read.buffer_addr = cpu_to_le64(dma); 8269 8270 while (unlikely(size > IXGBE_MAX_DATA_PER_TXD)) { 8271 tx_desc->read.cmd_type_len = 8272 cpu_to_le32(cmd_type ^ IXGBE_MAX_DATA_PER_TXD); 8273 8274 i++; 8275 tx_desc++; 8276 if (i == tx_ring->count) { 8277 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 8278 i = 0; 8279 } 8280 tx_desc->read.olinfo_status = 0; 8281 8282 dma += IXGBE_MAX_DATA_PER_TXD; 8283 size -= IXGBE_MAX_DATA_PER_TXD; 8284 8285 tx_desc->read.buffer_addr = cpu_to_le64(dma); 8286 } 8287 8288 if (likely(!data_len)) 8289 break; 8290 8291 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size); 8292 8293 i++; 8294 tx_desc++; 8295 if (i == tx_ring->count) { 8296 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 8297 i = 0; 8298 } 8299 tx_desc->read.olinfo_status = 0; 8300 8301 #ifdef IXGBE_FCOE 8302 size = min_t(unsigned int, data_len, skb_frag_size(frag)); 8303 #else 8304 size = skb_frag_size(frag); 8305 #endif 8306 data_len -= size; 8307 8308 dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size, 8309 DMA_TO_DEVICE); 8310 8311 tx_buffer = &tx_ring->tx_buffer_info[i]; 8312 } 8313 8314 /* write last descriptor with RS and EOP bits */ 8315 cmd_type |= size | IXGBE_TXD_CMD; 8316 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 8317 8318 netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); 8319 8320 /* set the timestamp */ 8321 first->time_stamp = jiffies; 8322 8323 skb_tx_timestamp(skb); 8324 8325 /* 8326 * Force memory writes to complete before letting h/w know there 8327 * are new descriptors to fetch. (Only applicable for weak-ordered 8328 * memory model archs, such as IA-64). 8329 * 8330 * We also need this memory barrier to make certain all of the 8331 * status bits have been updated before next_to_watch is written. 8332 */ 8333 wmb(); 8334 8335 /* set next_to_watch value indicating a packet is present */ 8336 first->next_to_watch = tx_desc; 8337 8338 i++; 8339 if (i == tx_ring->count) 8340 i = 0; 8341 8342 tx_ring->next_to_use = i; 8343 8344 ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED); 8345 8346 if (netif_xmit_stopped(txring_txq(tx_ring)) || !netdev_xmit_more()) { 8347 writel(i, tx_ring->tail); 8348 } 8349 8350 return 0; 8351 dma_error: 8352 dev_err(tx_ring->dev, "TX DMA map failed\n"); 8353 8354 /* clear dma mappings for failed tx_buffer_info map */ 8355 for (;;) { 8356 tx_buffer = &tx_ring->tx_buffer_info[i]; 8357 if (dma_unmap_len(tx_buffer, len)) 8358 dma_unmap_page(tx_ring->dev, 8359 dma_unmap_addr(tx_buffer, dma), 8360 dma_unmap_len(tx_buffer, len), 8361 DMA_TO_DEVICE); 8362 dma_unmap_len_set(tx_buffer, len, 0); 8363 if (tx_buffer == first) 8364 break; 8365 if (i == 0) 8366 i += tx_ring->count; 8367 i--; 8368 } 8369 8370 dev_kfree_skb_any(first->skb); 8371 first->skb = NULL; 8372 8373 tx_ring->next_to_use = i; 8374 8375 return -1; 8376 } 8377 8378 static void ixgbe_atr(struct ixgbe_ring *ring, 8379 struct ixgbe_tx_buffer *first) 8380 { 8381 struct ixgbe_q_vector *q_vector = ring->q_vector; 8382 union ixgbe_atr_hash_dword input = { .dword = 0 }; 8383 union ixgbe_atr_hash_dword common = { .dword = 0 }; 8384 union { 8385 unsigned char *network; 8386 struct iphdr *ipv4; 8387 struct ipv6hdr *ipv6; 8388 } hdr; 8389 struct tcphdr *th; 8390 unsigned int hlen; 8391 struct sk_buff *skb; 8392 __be16 vlan_id; 8393 int l4_proto; 8394 8395 /* if ring doesn't have a interrupt vector, cannot perform ATR */ 8396 if (!q_vector) 8397 return; 8398 8399 /* do nothing if sampling is disabled */ 8400 if (!ring->atr_sample_rate) 8401 return; 8402 8403 ring->atr_count++; 8404 8405 /* currently only IPv4/IPv6 with TCP is supported */ 8406 if ((first->protocol != htons(ETH_P_IP)) && 8407 (first->protocol != htons(ETH_P_IPV6))) 8408 return; 8409 8410 /* snag network header to get L4 type and address */ 8411 skb = first->skb; 8412 hdr.network = skb_network_header(skb); 8413 if (unlikely(hdr.network <= skb->data)) 8414 return; 8415 if (skb->encapsulation && 8416 first->protocol == htons(ETH_P_IP) && 8417 hdr.ipv4->protocol == IPPROTO_UDP) { 8418 struct ixgbe_adapter *adapter = q_vector->adapter; 8419 8420 if (unlikely(skb_tail_pointer(skb) < hdr.network + 8421 VXLAN_HEADROOM)) 8422 return; 8423 8424 /* verify the port is recognized as VXLAN */ 8425 if (adapter->vxlan_port && 8426 udp_hdr(skb)->dest == adapter->vxlan_port) 8427 hdr.network = skb_inner_network_header(skb); 8428 8429 if (adapter->geneve_port && 8430 udp_hdr(skb)->dest == adapter->geneve_port) 8431 hdr.network = skb_inner_network_header(skb); 8432 } 8433 8434 /* Make sure we have at least [minimum IPv4 header + TCP] 8435 * or [IPv6 header] bytes 8436 */ 8437 if (unlikely(skb_tail_pointer(skb) < hdr.network + 40)) 8438 return; 8439 8440 /* Currently only IPv4/IPv6 with TCP is supported */ 8441 switch (hdr.ipv4->version) { 8442 case IPVERSION: 8443 /* access ihl as u8 to avoid unaligned access on ia64 */ 8444 hlen = (hdr.network[0] & 0x0F) << 2; 8445 l4_proto = hdr.ipv4->protocol; 8446 break; 8447 case 6: 8448 hlen = hdr.network - skb->data; 8449 l4_proto = ipv6_find_hdr(skb, &hlen, IPPROTO_TCP, NULL, NULL); 8450 hlen -= hdr.network - skb->data; 8451 break; 8452 default: 8453 return; 8454 } 8455 8456 if (l4_proto != IPPROTO_TCP) 8457 return; 8458 8459 if (unlikely(skb_tail_pointer(skb) < hdr.network + 8460 hlen + sizeof(struct tcphdr))) 8461 return; 8462 8463 th = (struct tcphdr *)(hdr.network + hlen); 8464 8465 /* skip this packet since the socket is closing */ 8466 if (th->fin) 8467 return; 8468 8469 /* sample on all syn packets or once every atr sample count */ 8470 if (!th->syn && (ring->atr_count < ring->atr_sample_rate)) 8471 return; 8472 8473 /* reset sample count */ 8474 ring->atr_count = 0; 8475 8476 vlan_id = htons(first->tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT); 8477 8478 /* 8479 * src and dst are inverted, think how the receiver sees them 8480 * 8481 * The input is broken into two sections, a non-compressed section 8482 * containing vm_pool, vlan_id, and flow_type. The rest of the data 8483 * is XORed together and stored in the compressed dword. 8484 */ 8485 input.formatted.vlan_id = vlan_id; 8486 8487 /* 8488 * since src port and flex bytes occupy the same word XOR them together 8489 * and write the value to source port portion of compressed dword 8490 */ 8491 if (first->tx_flags & (IXGBE_TX_FLAGS_SW_VLAN | IXGBE_TX_FLAGS_HW_VLAN)) 8492 common.port.src ^= th->dest ^ htons(ETH_P_8021Q); 8493 else 8494 common.port.src ^= th->dest ^ first->protocol; 8495 common.port.dst ^= th->source; 8496 8497 switch (hdr.ipv4->version) { 8498 case IPVERSION: 8499 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4; 8500 common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr; 8501 break; 8502 case 6: 8503 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6; 8504 common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^ 8505 hdr.ipv6->saddr.s6_addr32[1] ^ 8506 hdr.ipv6->saddr.s6_addr32[2] ^ 8507 hdr.ipv6->saddr.s6_addr32[3] ^ 8508 hdr.ipv6->daddr.s6_addr32[0] ^ 8509 hdr.ipv6->daddr.s6_addr32[1] ^ 8510 hdr.ipv6->daddr.s6_addr32[2] ^ 8511 hdr.ipv6->daddr.s6_addr32[3]; 8512 break; 8513 default: 8514 break; 8515 } 8516 8517 if (hdr.network != skb_network_header(skb)) 8518 input.formatted.flow_type |= IXGBE_ATR_L4TYPE_TUNNEL_MASK; 8519 8520 /* This assumes the Rx queue and Tx queue are bound to the same CPU */ 8521 ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw, 8522 input, common, ring->queue_index); 8523 } 8524 8525 #ifdef IXGBE_FCOE 8526 static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb, 8527 struct net_device *sb_dev) 8528 { 8529 struct ixgbe_adapter *adapter; 8530 struct ixgbe_ring_feature *f; 8531 int txq; 8532 8533 if (sb_dev) { 8534 u8 tc = netdev_get_prio_tc_map(dev, skb->priority); 8535 struct net_device *vdev = sb_dev; 8536 8537 txq = vdev->tc_to_txq[tc].offset; 8538 txq += reciprocal_scale(skb_get_hash(skb), 8539 vdev->tc_to_txq[tc].count); 8540 8541 return txq; 8542 } 8543 8544 /* 8545 * only execute the code below if protocol is FCoE 8546 * or FIP and we have FCoE enabled on the adapter 8547 */ 8548 switch (vlan_get_protocol(skb)) { 8549 case htons(ETH_P_FCOE): 8550 case htons(ETH_P_FIP): 8551 adapter = netdev_priv(dev); 8552 8553 if (!sb_dev && (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) 8554 break; 8555 fallthrough; 8556 default: 8557 return netdev_pick_tx(dev, skb, sb_dev); 8558 } 8559 8560 f = &adapter->ring_feature[RING_F_FCOE]; 8561 8562 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 8563 smp_processor_id(); 8564 8565 while (txq >= f->indices) 8566 txq -= f->indices; 8567 8568 return txq + f->offset; 8569 } 8570 8571 #endif 8572 int ixgbe_xmit_xdp_ring(struct ixgbe_ring *ring, 8573 struct xdp_frame *xdpf) 8574 { 8575 struct skb_shared_info *sinfo = xdp_get_shared_info_from_frame(xdpf); 8576 u8 nr_frags = unlikely(xdp_frame_has_frags(xdpf)) ? sinfo->nr_frags : 0; 8577 u16 i = 0, index = ring->next_to_use; 8578 struct ixgbe_tx_buffer *tx_head = &ring->tx_buffer_info[index]; 8579 struct ixgbe_tx_buffer *tx_buff = tx_head; 8580 union ixgbe_adv_tx_desc *tx_desc = IXGBE_TX_DESC(ring, index); 8581 u32 cmd_type, len = xdpf->len; 8582 void *data = xdpf->data; 8583 8584 if (unlikely(ixgbe_desc_unused(ring) < 1 + nr_frags)) 8585 return IXGBE_XDP_CONSUMED; 8586 8587 tx_head->bytecount = xdp_get_frame_len(xdpf); 8588 tx_head->gso_segs = 1; 8589 tx_head->xdpf = xdpf; 8590 8591 tx_desc->read.olinfo_status = 8592 cpu_to_le32(tx_head->bytecount << IXGBE_ADVTXD_PAYLEN_SHIFT); 8593 8594 for (;;) { 8595 dma_addr_t dma; 8596 8597 dma = dma_map_single(ring->dev, data, len, DMA_TO_DEVICE); 8598 if (dma_mapping_error(ring->dev, dma)) 8599 goto unmap; 8600 8601 dma_unmap_len_set(tx_buff, len, len); 8602 dma_unmap_addr_set(tx_buff, dma, dma); 8603 8604 cmd_type = IXGBE_ADVTXD_DTYP_DATA | IXGBE_ADVTXD_DCMD_DEXT | 8605 IXGBE_ADVTXD_DCMD_IFCS | len; 8606 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 8607 tx_desc->read.buffer_addr = cpu_to_le64(dma); 8608 tx_buff->protocol = 0; 8609 8610 if (++index == ring->count) 8611 index = 0; 8612 8613 if (i == nr_frags) 8614 break; 8615 8616 tx_buff = &ring->tx_buffer_info[index]; 8617 tx_desc = IXGBE_TX_DESC(ring, index); 8618 tx_desc->read.olinfo_status = 0; 8619 8620 data = skb_frag_address(&sinfo->frags[i]); 8621 len = skb_frag_size(&sinfo->frags[i]); 8622 i++; 8623 } 8624 /* put descriptor type bits */ 8625 tx_desc->read.cmd_type_len |= cpu_to_le32(IXGBE_TXD_CMD); 8626 8627 /* Avoid any potential race with xdp_xmit and cleanup */ 8628 smp_wmb(); 8629 8630 tx_head->next_to_watch = tx_desc; 8631 ring->next_to_use = index; 8632 8633 return IXGBE_XDP_TX; 8634 8635 unmap: 8636 for (;;) { 8637 tx_buff = &ring->tx_buffer_info[index]; 8638 if (dma_unmap_len(tx_buff, len)) 8639 dma_unmap_page(ring->dev, dma_unmap_addr(tx_buff, dma), 8640 dma_unmap_len(tx_buff, len), 8641 DMA_TO_DEVICE); 8642 dma_unmap_len_set(tx_buff, len, 0); 8643 if (tx_buff == tx_head) 8644 break; 8645 8646 if (!index) 8647 index += ring->count; 8648 index--; 8649 } 8650 8651 return IXGBE_XDP_CONSUMED; 8652 } 8653 8654 netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, 8655 struct ixgbe_adapter *adapter, 8656 struct ixgbe_ring *tx_ring) 8657 { 8658 struct ixgbe_tx_buffer *first; 8659 int tso; 8660 u32 tx_flags = 0; 8661 unsigned short f; 8662 u16 count = TXD_USE_COUNT(skb_headlen(skb)); 8663 struct ixgbe_ipsec_tx_data ipsec_tx = { 0 }; 8664 __be16 protocol = skb->protocol; 8665 u8 hdr_len = 0; 8666 8667 /* 8668 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD, 8669 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD, 8670 * + 2 desc gap to keep tail from touching head, 8671 * + 1 desc for context descriptor, 8672 * otherwise try next time 8673 */ 8674 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) 8675 count += TXD_USE_COUNT(skb_frag_size( 8676 &skb_shinfo(skb)->frags[f])); 8677 8678 if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) { 8679 tx_ring->tx_stats.tx_busy++; 8680 return NETDEV_TX_BUSY; 8681 } 8682 8683 /* record the location of the first descriptor for this packet */ 8684 first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; 8685 first->skb = skb; 8686 first->bytecount = skb->len; 8687 first->gso_segs = 1; 8688 8689 /* if we have a HW VLAN tag being added default to the HW one */ 8690 if (skb_vlan_tag_present(skb)) { 8691 tx_flags |= skb_vlan_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT; 8692 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; 8693 /* else if it is a SW VLAN check the next protocol and store the tag */ 8694 } else if (protocol == htons(ETH_P_8021Q)) { 8695 struct vlan_hdr *vhdr, _vhdr; 8696 vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr), &_vhdr); 8697 if (!vhdr) 8698 goto out_drop; 8699 8700 tx_flags |= ntohs(vhdr->h_vlan_TCI) << 8701 IXGBE_TX_FLAGS_VLAN_SHIFT; 8702 tx_flags |= IXGBE_TX_FLAGS_SW_VLAN; 8703 } 8704 protocol = vlan_get_protocol(skb); 8705 8706 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 8707 adapter->ptp_clock) { 8708 if (adapter->tstamp_config.tx_type == HWTSTAMP_TX_ON && 8709 !test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS, 8710 &adapter->state)) { 8711 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 8712 tx_flags |= IXGBE_TX_FLAGS_TSTAMP; 8713 8714 /* schedule check for Tx timestamp */ 8715 adapter->ptp_tx_skb = skb_get(skb); 8716 adapter->ptp_tx_start = jiffies; 8717 schedule_work(&adapter->ptp_tx_work); 8718 } else { 8719 adapter->tx_hwtstamp_skipped++; 8720 } 8721 } 8722 8723 #ifdef CONFIG_PCI_IOV 8724 /* 8725 * Use the l2switch_enable flag - would be false if the DMA 8726 * Tx switch had been disabled. 8727 */ 8728 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 8729 tx_flags |= IXGBE_TX_FLAGS_CC; 8730 8731 #endif 8732 /* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */ 8733 if ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && 8734 ((tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | IXGBE_TX_FLAGS_SW_VLAN)) || 8735 (skb->priority != TC_PRIO_CONTROL))) { 8736 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK; 8737 tx_flags |= (skb->priority & 0x7) << 8738 IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT; 8739 if (tx_flags & IXGBE_TX_FLAGS_SW_VLAN) { 8740 struct vlan_ethhdr *vhdr; 8741 8742 if (skb_cow_head(skb, 0)) 8743 goto out_drop; 8744 vhdr = (struct vlan_ethhdr *)skb->data; 8745 vhdr->h_vlan_TCI = htons(tx_flags >> 8746 IXGBE_TX_FLAGS_VLAN_SHIFT); 8747 } else { 8748 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; 8749 } 8750 } 8751 8752 /* record initial flags and protocol */ 8753 first->tx_flags = tx_flags; 8754 first->protocol = protocol; 8755 8756 #ifdef IXGBE_FCOE 8757 /* setup tx offload for FCoE */ 8758 if ((protocol == htons(ETH_P_FCOE)) && 8759 (tx_ring->netdev->features & (NETIF_F_FSO | NETIF_F_FCOE_CRC))) { 8760 tso = ixgbe_fso(tx_ring, first, &hdr_len); 8761 if (tso < 0) 8762 goto out_drop; 8763 8764 goto xmit_fcoe; 8765 } 8766 8767 #endif /* IXGBE_FCOE */ 8768 8769 #ifdef CONFIG_IXGBE_IPSEC 8770 if (xfrm_offload(skb) && 8771 !ixgbe_ipsec_tx(tx_ring, first, &ipsec_tx)) 8772 goto out_drop; 8773 #endif 8774 tso = ixgbe_tso(tx_ring, first, &hdr_len, &ipsec_tx); 8775 if (tso < 0) 8776 goto out_drop; 8777 else if (!tso) 8778 ixgbe_tx_csum(tx_ring, first, &ipsec_tx); 8779 8780 /* add the ATR filter if ATR is on */ 8781 if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state)) 8782 ixgbe_atr(tx_ring, first); 8783 8784 #ifdef IXGBE_FCOE 8785 xmit_fcoe: 8786 #endif /* IXGBE_FCOE */ 8787 if (ixgbe_tx_map(tx_ring, first, hdr_len)) 8788 goto cleanup_tx_timestamp; 8789 8790 return NETDEV_TX_OK; 8791 8792 out_drop: 8793 dev_kfree_skb_any(first->skb); 8794 first->skb = NULL; 8795 cleanup_tx_timestamp: 8796 if (unlikely(tx_flags & IXGBE_TX_FLAGS_TSTAMP)) { 8797 dev_kfree_skb_any(adapter->ptp_tx_skb); 8798 adapter->ptp_tx_skb = NULL; 8799 cancel_work_sync(&adapter->ptp_tx_work); 8800 clear_bit_unlock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state); 8801 } 8802 8803 return NETDEV_TX_OK; 8804 } 8805 8806 static netdev_tx_t __ixgbe_xmit_frame(struct sk_buff *skb, 8807 struct net_device *netdev, 8808 struct ixgbe_ring *ring) 8809 { 8810 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8811 struct ixgbe_ring *tx_ring; 8812 8813 /* 8814 * The minimum packet size for olinfo paylen is 17 so pad the skb 8815 * in order to meet this minimum size requirement. 8816 */ 8817 if (skb_put_padto(skb, 17)) 8818 return NETDEV_TX_OK; 8819 8820 tx_ring = ring ? ring : adapter->tx_ring[skb_get_queue_mapping(skb)]; 8821 if (unlikely(test_bit(__IXGBE_TX_DISABLED, &tx_ring->state))) 8822 return NETDEV_TX_BUSY; 8823 8824 return ixgbe_xmit_frame_ring(skb, adapter, tx_ring); 8825 } 8826 8827 static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, 8828 struct net_device *netdev) 8829 { 8830 return __ixgbe_xmit_frame(skb, netdev, NULL); 8831 } 8832 8833 /** 8834 * ixgbe_set_mac - Change the Ethernet Address of the NIC 8835 * @netdev: network interface device structure 8836 * @p: pointer to an address structure 8837 * 8838 * Returns 0 on success, negative on failure 8839 **/ 8840 static int ixgbe_set_mac(struct net_device *netdev, void *p) 8841 { 8842 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8843 struct ixgbe_hw *hw = &adapter->hw; 8844 struct sockaddr *addr = p; 8845 8846 if (!is_valid_ether_addr(addr->sa_data)) 8847 return -EADDRNOTAVAIL; 8848 8849 eth_hw_addr_set(netdev, addr->sa_data); 8850 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); 8851 8852 ixgbe_mac_set_default_filter(adapter); 8853 8854 return 0; 8855 } 8856 8857 static int 8858 ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr) 8859 { 8860 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8861 struct ixgbe_hw *hw = &adapter->hw; 8862 u16 value; 8863 int rc; 8864 8865 if (adapter->mii_bus) { 8866 int regnum = addr; 8867 8868 if (devad != MDIO_DEVAD_NONE) 8869 regnum |= (devad << 16) | MII_ADDR_C45; 8870 8871 return mdiobus_read(adapter->mii_bus, prtad, regnum); 8872 } 8873 8874 if (prtad != hw->phy.mdio.prtad) 8875 return -EINVAL; 8876 rc = hw->phy.ops.read_reg(hw, addr, devad, &value); 8877 if (!rc) 8878 rc = value; 8879 return rc; 8880 } 8881 8882 static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad, 8883 u16 addr, u16 value) 8884 { 8885 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8886 struct ixgbe_hw *hw = &adapter->hw; 8887 8888 if (adapter->mii_bus) { 8889 int regnum = addr; 8890 8891 if (devad != MDIO_DEVAD_NONE) 8892 regnum |= (devad << 16) | MII_ADDR_C45; 8893 8894 return mdiobus_write(adapter->mii_bus, prtad, regnum, value); 8895 } 8896 8897 if (prtad != hw->phy.mdio.prtad) 8898 return -EINVAL; 8899 return hw->phy.ops.write_reg(hw, addr, devad, value); 8900 } 8901 8902 static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd) 8903 { 8904 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8905 8906 switch (cmd) { 8907 case SIOCSHWTSTAMP: 8908 return ixgbe_ptp_set_ts_config(adapter, req); 8909 case SIOCGHWTSTAMP: 8910 return ixgbe_ptp_get_ts_config(adapter, req); 8911 case SIOCGMIIPHY: 8912 if (!adapter->hw.phy.ops.read_reg) 8913 return -EOPNOTSUPP; 8914 fallthrough; 8915 default: 8916 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd); 8917 } 8918 } 8919 8920 /** 8921 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding 8922 * netdev->dev_addrs 8923 * @dev: network interface device structure 8924 * 8925 * Returns non-zero on failure 8926 **/ 8927 static int ixgbe_add_sanmac_netdev(struct net_device *dev) 8928 { 8929 int err = 0; 8930 struct ixgbe_adapter *adapter = netdev_priv(dev); 8931 struct ixgbe_hw *hw = &adapter->hw; 8932 8933 if (is_valid_ether_addr(hw->mac.san_addr)) { 8934 rtnl_lock(); 8935 err = dev_addr_add(dev, hw->mac.san_addr, NETDEV_HW_ADDR_T_SAN); 8936 rtnl_unlock(); 8937 8938 /* update SAN MAC vmdq pool selection */ 8939 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0)); 8940 } 8941 return err; 8942 } 8943 8944 /** 8945 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding 8946 * netdev->dev_addrs 8947 * @dev: network interface device structure 8948 * 8949 * Returns non-zero on failure 8950 **/ 8951 static int ixgbe_del_sanmac_netdev(struct net_device *dev) 8952 { 8953 int err = 0; 8954 struct ixgbe_adapter *adapter = netdev_priv(dev); 8955 struct ixgbe_mac_info *mac = &adapter->hw.mac; 8956 8957 if (is_valid_ether_addr(mac->san_addr)) { 8958 rtnl_lock(); 8959 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN); 8960 rtnl_unlock(); 8961 } 8962 return err; 8963 } 8964 8965 static void ixgbe_get_ring_stats64(struct rtnl_link_stats64 *stats, 8966 struct ixgbe_ring *ring) 8967 { 8968 u64 bytes, packets; 8969 unsigned int start; 8970 8971 if (ring) { 8972 do { 8973 start = u64_stats_fetch_begin_irq(&ring->syncp); 8974 packets = ring->stats.packets; 8975 bytes = ring->stats.bytes; 8976 } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); 8977 stats->tx_packets += packets; 8978 stats->tx_bytes += bytes; 8979 } 8980 } 8981 8982 static void ixgbe_get_stats64(struct net_device *netdev, 8983 struct rtnl_link_stats64 *stats) 8984 { 8985 struct ixgbe_adapter *adapter = netdev_priv(netdev); 8986 int i; 8987 8988 rcu_read_lock(); 8989 for (i = 0; i < adapter->num_rx_queues; i++) { 8990 struct ixgbe_ring *ring = READ_ONCE(adapter->rx_ring[i]); 8991 u64 bytes, packets; 8992 unsigned int start; 8993 8994 if (ring) { 8995 do { 8996 start = u64_stats_fetch_begin_irq(&ring->syncp); 8997 packets = ring->stats.packets; 8998 bytes = ring->stats.bytes; 8999 } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); 9000 stats->rx_packets += packets; 9001 stats->rx_bytes += bytes; 9002 } 9003 } 9004 9005 for (i = 0; i < adapter->num_tx_queues; i++) { 9006 struct ixgbe_ring *ring = READ_ONCE(adapter->tx_ring[i]); 9007 9008 ixgbe_get_ring_stats64(stats, ring); 9009 } 9010 for (i = 0; i < adapter->num_xdp_queues; i++) { 9011 struct ixgbe_ring *ring = READ_ONCE(adapter->xdp_ring[i]); 9012 9013 ixgbe_get_ring_stats64(stats, ring); 9014 } 9015 rcu_read_unlock(); 9016 9017 /* following stats updated by ixgbe_watchdog_task() */ 9018 stats->multicast = netdev->stats.multicast; 9019 stats->rx_errors = netdev->stats.rx_errors; 9020 stats->rx_length_errors = netdev->stats.rx_length_errors; 9021 stats->rx_crc_errors = netdev->stats.rx_crc_errors; 9022 stats->rx_missed_errors = netdev->stats.rx_missed_errors; 9023 } 9024 9025 #ifdef CONFIG_IXGBE_DCB 9026 /** 9027 * ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid. 9028 * @adapter: pointer to ixgbe_adapter 9029 * @tc: number of traffic classes currently enabled 9030 * 9031 * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm 9032 * 802.1Q priority maps to a packet buffer that exists. 9033 */ 9034 static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc) 9035 { 9036 struct ixgbe_hw *hw = &adapter->hw; 9037 u32 reg, rsave; 9038 int i; 9039 9040 /* 82598 have a static priority to TC mapping that can not 9041 * be changed so no validation is needed. 9042 */ 9043 if (hw->mac.type == ixgbe_mac_82598EB) 9044 return; 9045 9046 reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC); 9047 rsave = reg; 9048 9049 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { 9050 u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT); 9051 9052 /* If up2tc is out of bounds default to zero */ 9053 if (up2tc > tc) 9054 reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT); 9055 } 9056 9057 if (reg != rsave) 9058 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg); 9059 9060 return; 9061 } 9062 9063 /** 9064 * ixgbe_set_prio_tc_map - Configure netdev prio tc map 9065 * @adapter: Pointer to adapter struct 9066 * 9067 * Populate the netdev user priority to tc map 9068 */ 9069 static void ixgbe_set_prio_tc_map(struct ixgbe_adapter *adapter) 9070 { 9071 struct net_device *dev = adapter->netdev; 9072 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg; 9073 struct ieee_ets *ets = adapter->ixgbe_ieee_ets; 9074 u8 prio; 9075 9076 for (prio = 0; prio < MAX_USER_PRIORITY; prio++) { 9077 u8 tc = 0; 9078 9079 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) 9080 tc = ixgbe_dcb_get_tc_from_up(dcb_cfg, 0, prio); 9081 else if (ets) 9082 tc = ets->prio_tc[prio]; 9083 9084 netdev_set_prio_tc_map(dev, prio, tc); 9085 } 9086 } 9087 9088 #endif /* CONFIG_IXGBE_DCB */ 9089 static int ixgbe_reassign_macvlan_pool(struct net_device *vdev, 9090 struct netdev_nested_priv *priv) 9091 { 9092 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)priv->data; 9093 struct ixgbe_fwd_adapter *accel; 9094 int pool; 9095 9096 /* we only care about macvlans... */ 9097 if (!netif_is_macvlan(vdev)) 9098 return 0; 9099 9100 /* that have hardware offload enabled... */ 9101 accel = macvlan_accel_priv(vdev); 9102 if (!accel) 9103 return 0; 9104 9105 /* If we can relocate to a different bit do so */ 9106 pool = find_first_zero_bit(adapter->fwd_bitmask, adapter->num_rx_pools); 9107 if (pool < adapter->num_rx_pools) { 9108 set_bit(pool, adapter->fwd_bitmask); 9109 accel->pool = pool; 9110 return 0; 9111 } 9112 9113 /* if we cannot find a free pool then disable the offload */ 9114 netdev_err(vdev, "L2FW offload disabled due to lack of queue resources\n"); 9115 macvlan_release_l2fw_offload(vdev); 9116 9117 /* unbind the queues and drop the subordinate channel config */ 9118 netdev_unbind_sb_channel(adapter->netdev, vdev); 9119 netdev_set_sb_channel(vdev, 0); 9120 9121 kfree(accel); 9122 9123 return 0; 9124 } 9125 9126 static void ixgbe_defrag_macvlan_pools(struct net_device *dev) 9127 { 9128 struct ixgbe_adapter *adapter = netdev_priv(dev); 9129 struct netdev_nested_priv priv = { 9130 .data = (void *)adapter, 9131 }; 9132 9133 /* flush any stale bits out of the fwd bitmask */ 9134 bitmap_clear(adapter->fwd_bitmask, 1, 63); 9135 9136 /* walk through upper devices reassigning pools */ 9137 netdev_walk_all_upper_dev_rcu(dev, ixgbe_reassign_macvlan_pool, 9138 &priv); 9139 } 9140 9141 /** 9142 * ixgbe_setup_tc - configure net_device for multiple traffic classes 9143 * 9144 * @dev: net device to configure 9145 * @tc: number of traffic classes to enable 9146 */ 9147 int ixgbe_setup_tc(struct net_device *dev, u8 tc) 9148 { 9149 struct ixgbe_adapter *adapter = netdev_priv(dev); 9150 struct ixgbe_hw *hw = &adapter->hw; 9151 9152 /* Hardware supports up to 8 traffic classes */ 9153 if (tc > adapter->dcb_cfg.num_tcs.pg_tcs) 9154 return -EINVAL; 9155 9156 if (hw->mac.type == ixgbe_mac_82598EB && tc && tc < MAX_TRAFFIC_CLASS) 9157 return -EINVAL; 9158 9159 /* Hardware has to reinitialize queues and interrupts to 9160 * match packet buffer alignment. Unfortunately, the 9161 * hardware is not flexible enough to do this dynamically. 9162 */ 9163 if (netif_running(dev)) 9164 ixgbe_close(dev); 9165 else 9166 ixgbe_reset(adapter); 9167 9168 ixgbe_clear_interrupt_scheme(adapter); 9169 9170 #ifdef CONFIG_IXGBE_DCB 9171 if (tc) { 9172 if (adapter->xdp_prog) { 9173 e_warn(probe, "DCB is not supported with XDP\n"); 9174 9175 ixgbe_init_interrupt_scheme(adapter); 9176 if (netif_running(dev)) 9177 ixgbe_open(dev); 9178 return -EINVAL; 9179 } 9180 9181 netdev_set_num_tc(dev, tc); 9182 ixgbe_set_prio_tc_map(adapter); 9183 9184 adapter->hw_tcs = tc; 9185 adapter->flags |= IXGBE_FLAG_DCB_ENABLED; 9186 9187 if (adapter->hw.mac.type == ixgbe_mac_82598EB) { 9188 adapter->last_lfc_mode = adapter->hw.fc.requested_mode; 9189 adapter->hw.fc.requested_mode = ixgbe_fc_none; 9190 } 9191 } else { 9192 netdev_reset_tc(dev); 9193 9194 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 9195 adapter->hw.fc.requested_mode = adapter->last_lfc_mode; 9196 9197 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; 9198 adapter->hw_tcs = tc; 9199 9200 adapter->temp_dcb_cfg.pfc_mode_enable = false; 9201 adapter->dcb_cfg.pfc_mode_enable = false; 9202 } 9203 9204 ixgbe_validate_rtr(adapter, tc); 9205 9206 #endif /* CONFIG_IXGBE_DCB */ 9207 ixgbe_init_interrupt_scheme(adapter); 9208 9209 ixgbe_defrag_macvlan_pools(dev); 9210 9211 if (netif_running(dev)) 9212 return ixgbe_open(dev); 9213 9214 return 0; 9215 } 9216 9217 static int ixgbe_delete_clsu32(struct ixgbe_adapter *adapter, 9218 struct tc_cls_u32_offload *cls) 9219 { 9220 u32 hdl = cls->knode.handle; 9221 u32 uhtid = TC_U32_USERHTID(cls->knode.handle); 9222 u32 loc = cls->knode.handle & 0xfffff; 9223 int err = 0, i, j; 9224 struct ixgbe_jump_table *jump = NULL; 9225 9226 if (loc > IXGBE_MAX_HW_ENTRIES) 9227 return -EINVAL; 9228 9229 if ((uhtid != 0x800) && (uhtid >= IXGBE_MAX_LINK_HANDLE)) 9230 return -EINVAL; 9231 9232 /* Clear this filter in the link data it is associated with */ 9233 if (uhtid != 0x800) { 9234 jump = adapter->jump_tables[uhtid]; 9235 if (!jump) 9236 return -EINVAL; 9237 if (!test_bit(loc - 1, jump->child_loc_map)) 9238 return -EINVAL; 9239 clear_bit(loc - 1, jump->child_loc_map); 9240 } 9241 9242 /* Check if the filter being deleted is a link */ 9243 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { 9244 jump = adapter->jump_tables[i]; 9245 if (jump && jump->link_hdl == hdl) { 9246 /* Delete filters in the hardware in the child hash 9247 * table associated with this link 9248 */ 9249 for (j = 0; j < IXGBE_MAX_HW_ENTRIES; j++) { 9250 if (!test_bit(j, jump->child_loc_map)) 9251 continue; 9252 spin_lock(&adapter->fdir_perfect_lock); 9253 err = ixgbe_update_ethtool_fdir_entry(adapter, 9254 NULL, 9255 j + 1); 9256 spin_unlock(&adapter->fdir_perfect_lock); 9257 clear_bit(j, jump->child_loc_map); 9258 } 9259 /* Remove resources for this link */ 9260 kfree(jump->input); 9261 kfree(jump->mask); 9262 kfree(jump); 9263 adapter->jump_tables[i] = NULL; 9264 return err; 9265 } 9266 } 9267 9268 spin_lock(&adapter->fdir_perfect_lock); 9269 err = ixgbe_update_ethtool_fdir_entry(adapter, NULL, loc); 9270 spin_unlock(&adapter->fdir_perfect_lock); 9271 return err; 9272 } 9273 9274 static int ixgbe_configure_clsu32_add_hnode(struct ixgbe_adapter *adapter, 9275 struct tc_cls_u32_offload *cls) 9276 { 9277 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); 9278 9279 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 9280 return -EINVAL; 9281 9282 /* This ixgbe devices do not support hash tables at the moment 9283 * so abort when given hash tables. 9284 */ 9285 if (cls->hnode.divisor > 0) 9286 return -EINVAL; 9287 9288 set_bit(uhtid - 1, &adapter->tables); 9289 return 0; 9290 } 9291 9292 static int ixgbe_configure_clsu32_del_hnode(struct ixgbe_adapter *adapter, 9293 struct tc_cls_u32_offload *cls) 9294 { 9295 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); 9296 9297 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 9298 return -EINVAL; 9299 9300 clear_bit(uhtid - 1, &adapter->tables); 9301 return 0; 9302 } 9303 9304 #ifdef CONFIG_NET_CLS_ACT 9305 struct upper_walk_data { 9306 struct ixgbe_adapter *adapter; 9307 u64 action; 9308 int ifindex; 9309 u8 queue; 9310 }; 9311 9312 static int get_macvlan_queue(struct net_device *upper, 9313 struct netdev_nested_priv *priv) 9314 { 9315 if (netif_is_macvlan(upper)) { 9316 struct ixgbe_fwd_adapter *vadapter = macvlan_accel_priv(upper); 9317 struct ixgbe_adapter *adapter; 9318 struct upper_walk_data *data; 9319 int ifindex; 9320 9321 data = (struct upper_walk_data *)priv->data; 9322 ifindex = data->ifindex; 9323 adapter = data->adapter; 9324 if (vadapter && upper->ifindex == ifindex) { 9325 data->queue = adapter->rx_ring[vadapter->rx_base_queue]->reg_idx; 9326 data->action = data->queue; 9327 return 1; 9328 } 9329 } 9330 9331 return 0; 9332 } 9333 9334 static int handle_redirect_action(struct ixgbe_adapter *adapter, int ifindex, 9335 u8 *queue, u64 *action) 9336 { 9337 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 9338 unsigned int num_vfs = adapter->num_vfs, vf; 9339 struct netdev_nested_priv priv; 9340 struct upper_walk_data data; 9341 struct net_device *upper; 9342 9343 /* redirect to a SRIOV VF */ 9344 for (vf = 0; vf < num_vfs; ++vf) { 9345 upper = pci_get_drvdata(adapter->vfinfo[vf].vfdev); 9346 if (upper->ifindex == ifindex) { 9347 *queue = vf * __ALIGN_MASK(1, ~vmdq->mask); 9348 *action = vf + 1; 9349 *action <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF; 9350 return 0; 9351 } 9352 } 9353 9354 /* redirect to a offloaded macvlan netdev */ 9355 data.adapter = adapter; 9356 data.ifindex = ifindex; 9357 data.action = 0; 9358 data.queue = 0; 9359 priv.data = (void *)&data; 9360 if (netdev_walk_all_upper_dev_rcu(adapter->netdev, 9361 get_macvlan_queue, &priv)) { 9362 *action = data.action; 9363 *queue = data.queue; 9364 9365 return 0; 9366 } 9367 9368 return -EINVAL; 9369 } 9370 9371 static int parse_tc_actions(struct ixgbe_adapter *adapter, 9372 struct tcf_exts *exts, u64 *action, u8 *queue) 9373 { 9374 const struct tc_action *a; 9375 int i; 9376 9377 if (!tcf_exts_has_actions(exts)) 9378 return -EINVAL; 9379 9380 tcf_exts_for_each_action(i, a, exts) { 9381 /* Drop action */ 9382 if (is_tcf_gact_shot(a)) { 9383 *action = IXGBE_FDIR_DROP_QUEUE; 9384 *queue = IXGBE_FDIR_DROP_QUEUE; 9385 return 0; 9386 } 9387 9388 /* Redirect to a VF or a offloaded macvlan */ 9389 if (is_tcf_mirred_egress_redirect(a)) { 9390 struct net_device *dev = tcf_mirred_dev(a); 9391 9392 if (!dev) 9393 return -EINVAL; 9394 return handle_redirect_action(adapter, dev->ifindex, 9395 queue, action); 9396 } 9397 9398 return -EINVAL; 9399 } 9400 9401 return -EINVAL; 9402 } 9403 #else 9404 static int parse_tc_actions(struct ixgbe_adapter *adapter, 9405 struct tcf_exts *exts, u64 *action, u8 *queue) 9406 { 9407 return -EINVAL; 9408 } 9409 #endif /* CONFIG_NET_CLS_ACT */ 9410 9411 static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter *input, 9412 union ixgbe_atr_input *mask, 9413 struct tc_cls_u32_offload *cls, 9414 struct ixgbe_mat_field *field_ptr, 9415 struct ixgbe_nexthdr *nexthdr) 9416 { 9417 int i, j, off; 9418 __be32 val, m; 9419 bool found_entry = false, found_jump_field = false; 9420 9421 for (i = 0; i < cls->knode.sel->nkeys; i++) { 9422 off = cls->knode.sel->keys[i].off; 9423 val = cls->knode.sel->keys[i].val; 9424 m = cls->knode.sel->keys[i].mask; 9425 9426 for (j = 0; field_ptr[j].val; j++) { 9427 if (field_ptr[j].off == off) { 9428 field_ptr[j].val(input, mask, (__force u32)val, 9429 (__force u32)m); 9430 input->filter.formatted.flow_type |= 9431 field_ptr[j].type; 9432 found_entry = true; 9433 break; 9434 } 9435 } 9436 if (nexthdr) { 9437 if (nexthdr->off == cls->knode.sel->keys[i].off && 9438 nexthdr->val == 9439 (__force u32)cls->knode.sel->keys[i].val && 9440 nexthdr->mask == 9441 (__force u32)cls->knode.sel->keys[i].mask) 9442 found_jump_field = true; 9443 else 9444 continue; 9445 } 9446 } 9447 9448 if (nexthdr && !found_jump_field) 9449 return -EINVAL; 9450 9451 if (!found_entry) 9452 return 0; 9453 9454 mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK | 9455 IXGBE_ATR_L4TYPE_MASK; 9456 9457 if (input->filter.formatted.flow_type == IXGBE_ATR_FLOW_TYPE_IPV4) 9458 mask->formatted.flow_type &= IXGBE_ATR_L4TYPE_IPV6_MASK; 9459 9460 return 0; 9461 } 9462 9463 static int ixgbe_configure_clsu32(struct ixgbe_adapter *adapter, 9464 struct tc_cls_u32_offload *cls) 9465 { 9466 __be16 protocol = cls->common.protocol; 9467 u32 loc = cls->knode.handle & 0xfffff; 9468 struct ixgbe_hw *hw = &adapter->hw; 9469 struct ixgbe_mat_field *field_ptr; 9470 struct ixgbe_fdir_filter *input = NULL; 9471 union ixgbe_atr_input *mask = NULL; 9472 struct ixgbe_jump_table *jump = NULL; 9473 int i, err = -EINVAL; 9474 u8 queue; 9475 u32 uhtid, link_uhtid; 9476 9477 uhtid = TC_U32_USERHTID(cls->knode.handle); 9478 link_uhtid = TC_U32_USERHTID(cls->knode.link_handle); 9479 9480 /* At the moment cls_u32 jumps to network layer and skips past 9481 * L2 headers. The canonical method to match L2 frames is to use 9482 * negative values. However this is error prone at best but really 9483 * just broken because there is no way to "know" what sort of hdr 9484 * is in front of the network layer. Fix cls_u32 to support L2 9485 * headers when needed. 9486 */ 9487 if (protocol != htons(ETH_P_IP)) 9488 return err; 9489 9490 if (loc >= ((1024 << adapter->fdir_pballoc) - 2)) { 9491 e_err(drv, "Location out of range\n"); 9492 return err; 9493 } 9494 9495 /* cls u32 is a graph starting at root node 0x800. The driver tracks 9496 * links and also the fields used to advance the parser across each 9497 * link (e.g. nexthdr/eat parameters from 'tc'). This way we can map 9498 * the u32 graph onto the hardware parse graph denoted in ixgbe_model.h 9499 * To add support for new nodes update ixgbe_model.h parse structures 9500 * this function _should_ be generic try not to hardcode values here. 9501 */ 9502 if (uhtid == 0x800) { 9503 field_ptr = (adapter->jump_tables[0])->mat; 9504 } else { 9505 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 9506 return err; 9507 if (!adapter->jump_tables[uhtid]) 9508 return err; 9509 field_ptr = (adapter->jump_tables[uhtid])->mat; 9510 } 9511 9512 if (!field_ptr) 9513 return err; 9514 9515 /* At this point we know the field_ptr is valid and need to either 9516 * build cls_u32 link or attach filter. Because adding a link to 9517 * a handle that does not exist is invalid and the same for adding 9518 * rules to handles that don't exist. 9519 */ 9520 9521 if (link_uhtid) { 9522 struct ixgbe_nexthdr *nexthdr = ixgbe_ipv4_jumps; 9523 9524 if (link_uhtid >= IXGBE_MAX_LINK_HANDLE) 9525 return err; 9526 9527 if (!test_bit(link_uhtid - 1, &adapter->tables)) 9528 return err; 9529 9530 /* Multiple filters as links to the same hash table are not 9531 * supported. To add a new filter with the same next header 9532 * but different match/jump conditions, create a new hash table 9533 * and link to it. 9534 */ 9535 if (adapter->jump_tables[link_uhtid] && 9536 (adapter->jump_tables[link_uhtid])->link_hdl) { 9537 e_err(drv, "Link filter exists for link: %x\n", 9538 link_uhtid); 9539 return err; 9540 } 9541 9542 for (i = 0; nexthdr[i].jump; i++) { 9543 if (nexthdr[i].o != cls->knode.sel->offoff || 9544 nexthdr[i].s != cls->knode.sel->offshift || 9545 nexthdr[i].m != 9546 (__force u32)cls->knode.sel->offmask) 9547 return err; 9548 9549 jump = kzalloc(sizeof(*jump), GFP_KERNEL); 9550 if (!jump) 9551 return -ENOMEM; 9552 input = kzalloc(sizeof(*input), GFP_KERNEL); 9553 if (!input) { 9554 err = -ENOMEM; 9555 goto free_jump; 9556 } 9557 mask = kzalloc(sizeof(*mask), GFP_KERNEL); 9558 if (!mask) { 9559 err = -ENOMEM; 9560 goto free_input; 9561 } 9562 jump->input = input; 9563 jump->mask = mask; 9564 jump->link_hdl = cls->knode.handle; 9565 9566 err = ixgbe_clsu32_build_input(input, mask, cls, 9567 field_ptr, &nexthdr[i]); 9568 if (!err) { 9569 jump->mat = nexthdr[i].jump; 9570 adapter->jump_tables[link_uhtid] = jump; 9571 break; 9572 } else { 9573 kfree(mask); 9574 kfree(input); 9575 kfree(jump); 9576 } 9577 } 9578 return 0; 9579 } 9580 9581 input = kzalloc(sizeof(*input), GFP_KERNEL); 9582 if (!input) 9583 return -ENOMEM; 9584 mask = kzalloc(sizeof(*mask), GFP_KERNEL); 9585 if (!mask) { 9586 err = -ENOMEM; 9587 goto free_input; 9588 } 9589 9590 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) { 9591 if ((adapter->jump_tables[uhtid])->input) 9592 memcpy(input, (adapter->jump_tables[uhtid])->input, 9593 sizeof(*input)); 9594 if ((adapter->jump_tables[uhtid])->mask) 9595 memcpy(mask, (adapter->jump_tables[uhtid])->mask, 9596 sizeof(*mask)); 9597 9598 /* Lookup in all child hash tables if this location is already 9599 * filled with a filter 9600 */ 9601 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { 9602 struct ixgbe_jump_table *link = adapter->jump_tables[i]; 9603 9604 if (link && (test_bit(loc - 1, link->child_loc_map))) { 9605 e_err(drv, "Filter exists in location: %x\n", 9606 loc); 9607 err = -EINVAL; 9608 goto err_out; 9609 } 9610 } 9611 } 9612 err = ixgbe_clsu32_build_input(input, mask, cls, field_ptr, NULL); 9613 if (err) 9614 goto err_out; 9615 9616 err = parse_tc_actions(adapter, cls->knode.exts, &input->action, 9617 &queue); 9618 if (err < 0) 9619 goto err_out; 9620 9621 input->sw_idx = loc; 9622 9623 spin_lock(&adapter->fdir_perfect_lock); 9624 9625 if (hlist_empty(&adapter->fdir_filter_list)) { 9626 memcpy(&adapter->fdir_mask, mask, sizeof(*mask)); 9627 err = ixgbe_fdir_set_input_mask_82599(hw, mask); 9628 if (err) 9629 goto err_out_w_lock; 9630 } else if (memcmp(&adapter->fdir_mask, mask, sizeof(*mask))) { 9631 err = -EINVAL; 9632 goto err_out_w_lock; 9633 } 9634 9635 ixgbe_atr_compute_perfect_hash_82599(&input->filter, mask); 9636 err = ixgbe_fdir_write_perfect_filter_82599(hw, &input->filter, 9637 input->sw_idx, queue); 9638 if (err) 9639 goto err_out_w_lock; 9640 9641 ixgbe_update_ethtool_fdir_entry(adapter, input, input->sw_idx); 9642 spin_unlock(&adapter->fdir_perfect_lock); 9643 9644 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) 9645 set_bit(loc - 1, (adapter->jump_tables[uhtid])->child_loc_map); 9646 9647 kfree(mask); 9648 return err; 9649 err_out_w_lock: 9650 spin_unlock(&adapter->fdir_perfect_lock); 9651 err_out: 9652 kfree(mask); 9653 free_input: 9654 kfree(input); 9655 free_jump: 9656 kfree(jump); 9657 return err; 9658 } 9659 9660 static int ixgbe_setup_tc_cls_u32(struct ixgbe_adapter *adapter, 9661 struct tc_cls_u32_offload *cls_u32) 9662 { 9663 switch (cls_u32->command) { 9664 case TC_CLSU32_NEW_KNODE: 9665 case TC_CLSU32_REPLACE_KNODE: 9666 return ixgbe_configure_clsu32(adapter, cls_u32); 9667 case TC_CLSU32_DELETE_KNODE: 9668 return ixgbe_delete_clsu32(adapter, cls_u32); 9669 case TC_CLSU32_NEW_HNODE: 9670 case TC_CLSU32_REPLACE_HNODE: 9671 return ixgbe_configure_clsu32_add_hnode(adapter, cls_u32); 9672 case TC_CLSU32_DELETE_HNODE: 9673 return ixgbe_configure_clsu32_del_hnode(adapter, cls_u32); 9674 default: 9675 return -EOPNOTSUPP; 9676 } 9677 } 9678 9679 static int ixgbe_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 9680 void *cb_priv) 9681 { 9682 struct ixgbe_adapter *adapter = cb_priv; 9683 9684 if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) 9685 return -EOPNOTSUPP; 9686 9687 switch (type) { 9688 case TC_SETUP_CLSU32: 9689 return ixgbe_setup_tc_cls_u32(adapter, type_data); 9690 default: 9691 return -EOPNOTSUPP; 9692 } 9693 } 9694 9695 static int ixgbe_setup_tc_mqprio(struct net_device *dev, 9696 struct tc_mqprio_qopt *mqprio) 9697 { 9698 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; 9699 return ixgbe_setup_tc(dev, mqprio->num_tc); 9700 } 9701 9702 static LIST_HEAD(ixgbe_block_cb_list); 9703 9704 static int __ixgbe_setup_tc(struct net_device *dev, enum tc_setup_type type, 9705 void *type_data) 9706 { 9707 struct ixgbe_adapter *adapter = netdev_priv(dev); 9708 9709 switch (type) { 9710 case TC_SETUP_BLOCK: 9711 return flow_block_cb_setup_simple(type_data, 9712 &ixgbe_block_cb_list, 9713 ixgbe_setup_tc_block_cb, 9714 adapter, adapter, true); 9715 case TC_SETUP_QDISC_MQPRIO: 9716 return ixgbe_setup_tc_mqprio(dev, type_data); 9717 default: 9718 return -EOPNOTSUPP; 9719 } 9720 } 9721 9722 #ifdef CONFIG_PCI_IOV 9723 void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter) 9724 { 9725 struct net_device *netdev = adapter->netdev; 9726 9727 rtnl_lock(); 9728 ixgbe_setup_tc(netdev, adapter->hw_tcs); 9729 rtnl_unlock(); 9730 } 9731 9732 #endif 9733 void ixgbe_do_reset(struct net_device *netdev) 9734 { 9735 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9736 9737 if (netif_running(netdev)) 9738 ixgbe_reinit_locked(adapter); 9739 else 9740 ixgbe_reset(adapter); 9741 } 9742 9743 static netdev_features_t ixgbe_fix_features(struct net_device *netdev, 9744 netdev_features_t features) 9745 { 9746 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9747 9748 /* If Rx checksum is disabled, then RSC/LRO should also be disabled */ 9749 if (!(features & NETIF_F_RXCSUM)) 9750 features &= ~NETIF_F_LRO; 9751 9752 /* Turn off LRO if not RSC capable */ 9753 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)) 9754 features &= ~NETIF_F_LRO; 9755 9756 if (adapter->xdp_prog && (features & NETIF_F_LRO)) { 9757 e_dev_err("LRO is not supported with XDP\n"); 9758 features &= ~NETIF_F_LRO; 9759 } 9760 9761 return features; 9762 } 9763 9764 static void ixgbe_reset_l2fw_offload(struct ixgbe_adapter *adapter) 9765 { 9766 int rss = min_t(int, ixgbe_max_rss_indices(adapter), 9767 num_online_cpus()); 9768 9769 /* go back to full RSS if we're not running SR-IOV */ 9770 if (!adapter->ring_feature[RING_F_VMDQ].offset) 9771 adapter->flags &= ~(IXGBE_FLAG_VMDQ_ENABLED | 9772 IXGBE_FLAG_SRIOV_ENABLED); 9773 9774 adapter->ring_feature[RING_F_RSS].limit = rss; 9775 adapter->ring_feature[RING_F_VMDQ].limit = 1; 9776 9777 ixgbe_setup_tc(adapter->netdev, adapter->hw_tcs); 9778 } 9779 9780 static int ixgbe_set_features(struct net_device *netdev, 9781 netdev_features_t features) 9782 { 9783 struct ixgbe_adapter *adapter = netdev_priv(netdev); 9784 netdev_features_t changed = netdev->features ^ features; 9785 bool need_reset = false; 9786 9787 /* Make sure RSC matches LRO, reset if change */ 9788 if (!(features & NETIF_F_LRO)) { 9789 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 9790 need_reset = true; 9791 adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED; 9792 } else if ((adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) && 9793 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) { 9794 if (adapter->rx_itr_setting == 1 || 9795 adapter->rx_itr_setting > IXGBE_MIN_RSC_ITR) { 9796 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED; 9797 need_reset = true; 9798 } else if ((changed ^ features) & NETIF_F_LRO) { 9799 e_info(probe, "rx-usecs set too low, " 9800 "disabling RSC\n"); 9801 } 9802 } 9803 9804 /* 9805 * Check if Flow Director n-tuple support or hw_tc support was 9806 * enabled or disabled. If the state changed, we need to reset. 9807 */ 9808 if ((features & NETIF_F_NTUPLE) || (features & NETIF_F_HW_TC)) { 9809 /* turn off ATR, enable perfect filters and reset */ 9810 if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) 9811 need_reset = true; 9812 9813 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; 9814 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE; 9815 } else { 9816 /* turn off perfect filters, enable ATR and reset */ 9817 if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) 9818 need_reset = true; 9819 9820 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE; 9821 9822 /* We cannot enable ATR if SR-IOV is enabled */ 9823 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED || 9824 /* We cannot enable ATR if we have 2 or more tcs */ 9825 (adapter->hw_tcs > 1) || 9826 /* We cannot enable ATR if RSS is disabled */ 9827 (adapter->ring_feature[RING_F_RSS].limit <= 1) || 9828 /* A sample rate of 0 indicates ATR disabled */ 9829 (!adapter->atr_sample_rate)) 9830 ; /* do nothing not supported */ 9831 else /* otherwise supported and set the flag */ 9832 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE; 9833 } 9834 9835 if (changed & NETIF_F_RXALL) 9836 need_reset = true; 9837 9838 netdev->features = features; 9839 9840 if ((changed & NETIF_F_HW_L2FW_DOFFLOAD) && adapter->num_rx_pools > 1) 9841 ixgbe_reset_l2fw_offload(adapter); 9842 else if (need_reset) 9843 ixgbe_do_reset(netdev); 9844 else if (changed & (NETIF_F_HW_VLAN_CTAG_RX | 9845 NETIF_F_HW_VLAN_CTAG_FILTER)) 9846 ixgbe_set_rx_mode(netdev); 9847 9848 return 1; 9849 } 9850 9851 static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 9852 struct net_device *dev, 9853 const unsigned char *addr, u16 vid, 9854 u16 flags, 9855 struct netlink_ext_ack *extack) 9856 { 9857 /* guarantee we can provide a unique filter for the unicast address */ 9858 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) { 9859 struct ixgbe_adapter *adapter = netdev_priv(dev); 9860 u16 pool = VMDQ_P(0); 9861 9862 if (netdev_uc_count(dev) >= ixgbe_available_rars(adapter, pool)) 9863 return -ENOMEM; 9864 } 9865 9866 return ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, flags); 9867 } 9868 9869 /** 9870 * ixgbe_configure_bridge_mode - set various bridge modes 9871 * @adapter: the private structure 9872 * @mode: requested bridge mode 9873 * 9874 * Configure some settings require for various bridge modes. 9875 **/ 9876 static int ixgbe_configure_bridge_mode(struct ixgbe_adapter *adapter, 9877 __u16 mode) 9878 { 9879 struct ixgbe_hw *hw = &adapter->hw; 9880 unsigned int p, num_pools; 9881 u32 vmdctl; 9882 9883 switch (mode) { 9884 case BRIDGE_MODE_VEPA: 9885 /* disable Tx loopback, rely on switch hairpin mode */ 9886 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 0); 9887 9888 /* must enable Rx switching replication to allow multicast 9889 * packet reception on all VFs, and to enable source address 9890 * pruning. 9891 */ 9892 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); 9893 vmdctl |= IXGBE_VT_CTL_REPLEN; 9894 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); 9895 9896 /* enable Rx source address pruning. Note, this requires 9897 * replication to be enabled or else it does nothing. 9898 */ 9899 num_pools = adapter->num_vfs + adapter->num_rx_pools; 9900 for (p = 0; p < num_pools; p++) { 9901 if (hw->mac.ops.set_source_address_pruning) 9902 hw->mac.ops.set_source_address_pruning(hw, 9903 true, 9904 p); 9905 } 9906 break; 9907 case BRIDGE_MODE_VEB: 9908 /* enable Tx loopback for internal VF/PF communication */ 9909 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 9910 IXGBE_PFDTXGSWC_VT_LBEN); 9911 9912 /* disable Rx switching replication unless we have SR-IOV 9913 * virtual functions 9914 */ 9915 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); 9916 if (!adapter->num_vfs) 9917 vmdctl &= ~IXGBE_VT_CTL_REPLEN; 9918 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); 9919 9920 /* disable Rx source address pruning, since we don't expect to 9921 * be receiving external loopback of our transmitted frames. 9922 */ 9923 num_pools = adapter->num_vfs + adapter->num_rx_pools; 9924 for (p = 0; p < num_pools; p++) { 9925 if (hw->mac.ops.set_source_address_pruning) 9926 hw->mac.ops.set_source_address_pruning(hw, 9927 false, 9928 p); 9929 } 9930 break; 9931 default: 9932 return -EINVAL; 9933 } 9934 9935 adapter->bridge_mode = mode; 9936 9937 e_info(drv, "enabling bridge mode: %s\n", 9938 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB"); 9939 9940 return 0; 9941 } 9942 9943 static int ixgbe_ndo_bridge_setlink(struct net_device *dev, 9944 struct nlmsghdr *nlh, u16 flags, 9945 struct netlink_ext_ack *extack) 9946 { 9947 struct ixgbe_adapter *adapter = netdev_priv(dev); 9948 struct nlattr *attr, *br_spec; 9949 int rem; 9950 9951 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 9952 return -EOPNOTSUPP; 9953 9954 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 9955 if (!br_spec) 9956 return -EINVAL; 9957 9958 nla_for_each_nested(attr, br_spec, rem) { 9959 int status; 9960 __u16 mode; 9961 9962 if (nla_type(attr) != IFLA_BRIDGE_MODE) 9963 continue; 9964 9965 if (nla_len(attr) < sizeof(mode)) 9966 return -EINVAL; 9967 9968 mode = nla_get_u16(attr); 9969 status = ixgbe_configure_bridge_mode(adapter, mode); 9970 if (status) 9971 return status; 9972 9973 break; 9974 } 9975 9976 return 0; 9977 } 9978 9979 static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, 9980 struct net_device *dev, 9981 u32 filter_mask, int nlflags) 9982 { 9983 struct ixgbe_adapter *adapter = netdev_priv(dev); 9984 9985 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 9986 return 0; 9987 9988 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, 9989 adapter->bridge_mode, 0, 0, nlflags, 9990 filter_mask, NULL); 9991 } 9992 9993 static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev) 9994 { 9995 struct ixgbe_adapter *adapter = netdev_priv(pdev); 9996 struct ixgbe_fwd_adapter *accel; 9997 int tcs = adapter->hw_tcs ? : 1; 9998 int pool, err; 9999 10000 if (adapter->xdp_prog) { 10001 e_warn(probe, "L2FW offload is not supported with XDP\n"); 10002 return ERR_PTR(-EINVAL); 10003 } 10004 10005 /* The hardware supported by ixgbe only filters on the destination MAC 10006 * address. In order to avoid issues we only support offloading modes 10007 * where the hardware can actually provide the functionality. 10008 */ 10009 if (!macvlan_supports_dest_filter(vdev)) 10010 return ERR_PTR(-EMEDIUMTYPE); 10011 10012 /* We need to lock down the macvlan to be a single queue device so that 10013 * we can reuse the tc_to_txq field in the macvlan netdev to represent 10014 * the queue mapping to our netdev. 10015 */ 10016 if (netif_is_multiqueue(vdev)) 10017 return ERR_PTR(-ERANGE); 10018 10019 pool = find_first_zero_bit(adapter->fwd_bitmask, adapter->num_rx_pools); 10020 if (pool == adapter->num_rx_pools) { 10021 u16 used_pools = adapter->num_vfs + adapter->num_rx_pools; 10022 u16 reserved_pools; 10023 10024 if (((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && 10025 adapter->num_rx_pools >= (MAX_TX_QUEUES / tcs)) || 10026 adapter->num_rx_pools > IXGBE_MAX_MACVLANS) 10027 return ERR_PTR(-EBUSY); 10028 10029 /* Hardware has a limited number of available pools. Each VF, 10030 * and the PF require a pool. Check to ensure we don't 10031 * attempt to use more then the available number of pools. 10032 */ 10033 if (used_pools >= IXGBE_MAX_VF_FUNCTIONS) 10034 return ERR_PTR(-EBUSY); 10035 10036 /* Enable VMDq flag so device will be set in VM mode */ 10037 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED | 10038 IXGBE_FLAG_SRIOV_ENABLED; 10039 10040 /* Try to reserve as many queues per pool as possible, 10041 * we start with the configurations that support 4 queues 10042 * per pools, followed by 2, and then by just 1 per pool. 10043 */ 10044 if (used_pools < 32 && adapter->num_rx_pools < 16) 10045 reserved_pools = min_t(u16, 10046 32 - used_pools, 10047 16 - adapter->num_rx_pools); 10048 else if (adapter->num_rx_pools < 32) 10049 reserved_pools = min_t(u16, 10050 64 - used_pools, 10051 32 - adapter->num_rx_pools); 10052 else 10053 reserved_pools = 64 - used_pools; 10054 10055 10056 if (!reserved_pools) 10057 return ERR_PTR(-EBUSY); 10058 10059 adapter->ring_feature[RING_F_VMDQ].limit += reserved_pools; 10060 10061 /* Force reinit of ring allocation with VMDQ enabled */ 10062 err = ixgbe_setup_tc(pdev, adapter->hw_tcs); 10063 if (err) 10064 return ERR_PTR(err); 10065 10066 if (pool >= adapter->num_rx_pools) 10067 return ERR_PTR(-ENOMEM); 10068 } 10069 10070 accel = kzalloc(sizeof(*accel), GFP_KERNEL); 10071 if (!accel) 10072 return ERR_PTR(-ENOMEM); 10073 10074 set_bit(pool, adapter->fwd_bitmask); 10075 netdev_set_sb_channel(vdev, pool); 10076 accel->pool = pool; 10077 accel->netdev = vdev; 10078 10079 if (!netif_running(pdev)) 10080 return accel; 10081 10082 err = ixgbe_fwd_ring_up(adapter, accel); 10083 if (err) 10084 return ERR_PTR(err); 10085 10086 return accel; 10087 } 10088 10089 static void ixgbe_fwd_del(struct net_device *pdev, void *priv) 10090 { 10091 struct ixgbe_fwd_adapter *accel = priv; 10092 struct ixgbe_adapter *adapter = netdev_priv(pdev); 10093 unsigned int rxbase = accel->rx_base_queue; 10094 unsigned int i; 10095 10096 /* delete unicast filter associated with offloaded interface */ 10097 ixgbe_del_mac_filter(adapter, accel->netdev->dev_addr, 10098 VMDQ_P(accel->pool)); 10099 10100 /* Allow remaining Rx packets to get flushed out of the 10101 * Rx FIFO before we drop the netdev for the ring. 10102 */ 10103 usleep_range(10000, 20000); 10104 10105 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) { 10106 struct ixgbe_ring *ring = adapter->rx_ring[rxbase + i]; 10107 struct ixgbe_q_vector *qv = ring->q_vector; 10108 10109 /* Make sure we aren't processing any packets and clear 10110 * netdev to shut down the ring. 10111 */ 10112 if (netif_running(adapter->netdev)) 10113 napi_synchronize(&qv->napi); 10114 ring->netdev = NULL; 10115 } 10116 10117 /* unbind the queues and drop the subordinate channel config */ 10118 netdev_unbind_sb_channel(pdev, accel->netdev); 10119 netdev_set_sb_channel(accel->netdev, 0); 10120 10121 clear_bit(accel->pool, adapter->fwd_bitmask); 10122 kfree(accel); 10123 } 10124 10125 #define IXGBE_MAX_MAC_HDR_LEN 127 10126 #define IXGBE_MAX_NETWORK_HDR_LEN 511 10127 10128 static netdev_features_t 10129 ixgbe_features_check(struct sk_buff *skb, struct net_device *dev, 10130 netdev_features_t features) 10131 { 10132 unsigned int network_hdr_len, mac_hdr_len; 10133 10134 /* Make certain the headers can be described by a context descriptor */ 10135 mac_hdr_len = skb_network_header(skb) - skb->data; 10136 if (unlikely(mac_hdr_len > IXGBE_MAX_MAC_HDR_LEN)) 10137 return features & ~(NETIF_F_HW_CSUM | 10138 NETIF_F_SCTP_CRC | 10139 NETIF_F_GSO_UDP_L4 | 10140 NETIF_F_HW_VLAN_CTAG_TX | 10141 NETIF_F_TSO | 10142 NETIF_F_TSO6); 10143 10144 network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb); 10145 if (unlikely(network_hdr_len > IXGBE_MAX_NETWORK_HDR_LEN)) 10146 return features & ~(NETIF_F_HW_CSUM | 10147 NETIF_F_SCTP_CRC | 10148 NETIF_F_GSO_UDP_L4 | 10149 NETIF_F_TSO | 10150 NETIF_F_TSO6); 10151 10152 /* We can only support IPV4 TSO in tunnels if we can mangle the 10153 * inner IP ID field, so strip TSO if MANGLEID is not supported. 10154 * IPsec offoad sets skb->encapsulation but still can handle 10155 * the TSO, so it's the exception. 10156 */ 10157 if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) { 10158 #ifdef CONFIG_IXGBE_IPSEC 10159 if (!secpath_exists(skb)) 10160 #endif 10161 features &= ~NETIF_F_TSO; 10162 } 10163 10164 return features; 10165 } 10166 10167 static int ixgbe_xdp_setup(struct net_device *dev, struct bpf_prog *prog) 10168 { 10169 int i, frame_size = dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; 10170 struct ixgbe_adapter *adapter = netdev_priv(dev); 10171 struct bpf_prog *old_prog; 10172 bool need_reset; 10173 int num_queues; 10174 10175 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 10176 return -EINVAL; 10177 10178 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) 10179 return -EINVAL; 10180 10181 /* verify ixgbe ring attributes are sufficient for XDP */ 10182 for (i = 0; i < adapter->num_rx_queues; i++) { 10183 struct ixgbe_ring *ring = adapter->rx_ring[i]; 10184 10185 if (ring_is_rsc_enabled(ring)) 10186 return -EINVAL; 10187 10188 if (frame_size > ixgbe_rx_bufsz(ring)) 10189 return -EINVAL; 10190 } 10191 10192 /* if the number of cpus is much larger than the maximum of queues, 10193 * we should stop it and then return with ENOMEM like before. 10194 */ 10195 if (nr_cpu_ids > IXGBE_MAX_XDP_QS * 2) 10196 return -ENOMEM; 10197 else if (nr_cpu_ids > IXGBE_MAX_XDP_QS) 10198 static_branch_inc(&ixgbe_xdp_locking_key); 10199 10200 old_prog = xchg(&adapter->xdp_prog, prog); 10201 need_reset = (!!prog != !!old_prog); 10202 10203 /* If transitioning XDP modes reconfigure rings */ 10204 if (need_reset) { 10205 int err; 10206 10207 if (!prog) 10208 /* Wait until ndo_xsk_wakeup completes. */ 10209 synchronize_rcu(); 10210 err = ixgbe_setup_tc(dev, adapter->hw_tcs); 10211 10212 if (err) { 10213 rcu_assign_pointer(adapter->xdp_prog, old_prog); 10214 return -EINVAL; 10215 } 10216 } else { 10217 for (i = 0; i < adapter->num_rx_queues; i++) 10218 (void)xchg(&adapter->rx_ring[i]->xdp_prog, 10219 adapter->xdp_prog); 10220 } 10221 10222 if (old_prog) 10223 bpf_prog_put(old_prog); 10224 10225 /* Kick start the NAPI context if there is an AF_XDP socket open 10226 * on that queue id. This so that receiving will start. 10227 */ 10228 if (need_reset && prog) { 10229 num_queues = min_t(int, adapter->num_rx_queues, 10230 adapter->num_xdp_queues); 10231 for (i = 0; i < num_queues; i++) 10232 if (adapter->xdp_ring[i]->xsk_pool) 10233 (void)ixgbe_xsk_wakeup(adapter->netdev, i, 10234 XDP_WAKEUP_RX); 10235 } 10236 10237 return 0; 10238 } 10239 10240 static int ixgbe_xdp(struct net_device *dev, struct netdev_bpf *xdp) 10241 { 10242 struct ixgbe_adapter *adapter = netdev_priv(dev); 10243 10244 switch (xdp->command) { 10245 case XDP_SETUP_PROG: 10246 return ixgbe_xdp_setup(dev, xdp->prog); 10247 case XDP_SETUP_XSK_POOL: 10248 return ixgbe_xsk_pool_setup(adapter, xdp->xsk.pool, 10249 xdp->xsk.queue_id); 10250 10251 default: 10252 return -EINVAL; 10253 } 10254 } 10255 10256 void ixgbe_xdp_ring_update_tail(struct ixgbe_ring *ring) 10257 { 10258 /* Force memory writes to complete before letting h/w know there 10259 * are new descriptors to fetch. 10260 */ 10261 wmb(); 10262 writel(ring->next_to_use, ring->tail); 10263 } 10264 10265 void ixgbe_xdp_ring_update_tail_locked(struct ixgbe_ring *ring) 10266 { 10267 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10268 spin_lock(&ring->tx_lock); 10269 ixgbe_xdp_ring_update_tail(ring); 10270 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10271 spin_unlock(&ring->tx_lock); 10272 } 10273 10274 static int ixgbe_xdp_xmit(struct net_device *dev, int n, 10275 struct xdp_frame **frames, u32 flags) 10276 { 10277 struct ixgbe_adapter *adapter = netdev_priv(dev); 10278 struct ixgbe_ring *ring; 10279 int nxmit = 0; 10280 int i; 10281 10282 if (unlikely(test_bit(__IXGBE_DOWN, &adapter->state))) 10283 return -ENETDOWN; 10284 10285 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) 10286 return -EINVAL; 10287 10288 /* During program transitions its possible adapter->xdp_prog is assigned 10289 * but ring has not been configured yet. In this case simply abort xmit. 10290 */ 10291 ring = adapter->xdp_prog ? ixgbe_determine_xdp_ring(adapter) : NULL; 10292 if (unlikely(!ring)) 10293 return -ENXIO; 10294 10295 if (unlikely(test_bit(__IXGBE_TX_DISABLED, &ring->state))) 10296 return -ENXIO; 10297 10298 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10299 spin_lock(&ring->tx_lock); 10300 10301 for (i = 0; i < n; i++) { 10302 struct xdp_frame *xdpf = frames[i]; 10303 int err; 10304 10305 err = ixgbe_xmit_xdp_ring(ring, xdpf); 10306 if (err != IXGBE_XDP_TX) 10307 break; 10308 nxmit++; 10309 } 10310 10311 if (unlikely(flags & XDP_XMIT_FLUSH)) 10312 ixgbe_xdp_ring_update_tail(ring); 10313 10314 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10315 spin_unlock(&ring->tx_lock); 10316 10317 return nxmit; 10318 } 10319 10320 static const struct net_device_ops ixgbe_netdev_ops = { 10321 .ndo_open = ixgbe_open, 10322 .ndo_stop = ixgbe_close, 10323 .ndo_start_xmit = ixgbe_xmit_frame, 10324 .ndo_set_rx_mode = ixgbe_set_rx_mode, 10325 .ndo_validate_addr = eth_validate_addr, 10326 .ndo_set_mac_address = ixgbe_set_mac, 10327 .ndo_change_mtu = ixgbe_change_mtu, 10328 .ndo_tx_timeout = ixgbe_tx_timeout, 10329 .ndo_set_tx_maxrate = ixgbe_tx_maxrate, 10330 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid, 10331 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid, 10332 .ndo_eth_ioctl = ixgbe_ioctl, 10333 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac, 10334 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan, 10335 .ndo_set_vf_rate = ixgbe_ndo_set_vf_bw, 10336 .ndo_set_vf_spoofchk = ixgbe_ndo_set_vf_spoofchk, 10337 .ndo_set_vf_link_state = ixgbe_ndo_set_vf_link_state, 10338 .ndo_set_vf_rss_query_en = ixgbe_ndo_set_vf_rss_query_en, 10339 .ndo_set_vf_trust = ixgbe_ndo_set_vf_trust, 10340 .ndo_get_vf_config = ixgbe_ndo_get_vf_config, 10341 .ndo_get_stats64 = ixgbe_get_stats64, 10342 .ndo_setup_tc = __ixgbe_setup_tc, 10343 #ifdef IXGBE_FCOE 10344 .ndo_select_queue = ixgbe_select_queue, 10345 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get, 10346 .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target, 10347 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put, 10348 .ndo_fcoe_enable = ixgbe_fcoe_enable, 10349 .ndo_fcoe_disable = ixgbe_fcoe_disable, 10350 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn, 10351 .ndo_fcoe_get_hbainfo = ixgbe_fcoe_get_hbainfo, 10352 #endif /* IXGBE_FCOE */ 10353 .ndo_set_features = ixgbe_set_features, 10354 .ndo_fix_features = ixgbe_fix_features, 10355 .ndo_fdb_add = ixgbe_ndo_fdb_add, 10356 .ndo_bridge_setlink = ixgbe_ndo_bridge_setlink, 10357 .ndo_bridge_getlink = ixgbe_ndo_bridge_getlink, 10358 .ndo_dfwd_add_station = ixgbe_fwd_add, 10359 .ndo_dfwd_del_station = ixgbe_fwd_del, 10360 .ndo_features_check = ixgbe_features_check, 10361 .ndo_bpf = ixgbe_xdp, 10362 .ndo_xdp_xmit = ixgbe_xdp_xmit, 10363 .ndo_xsk_wakeup = ixgbe_xsk_wakeup, 10364 }; 10365 10366 static void ixgbe_disable_txr_hw(struct ixgbe_adapter *adapter, 10367 struct ixgbe_ring *tx_ring) 10368 { 10369 unsigned long wait_delay, delay_interval; 10370 struct ixgbe_hw *hw = &adapter->hw; 10371 u8 reg_idx = tx_ring->reg_idx; 10372 int wait_loop; 10373 u32 txdctl; 10374 10375 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 10376 10377 /* delay mechanism from ixgbe_disable_tx */ 10378 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 10379 10380 wait_loop = IXGBE_MAX_RX_DESC_POLL; 10381 wait_delay = delay_interval; 10382 10383 while (wait_loop--) { 10384 usleep_range(wait_delay, wait_delay + 10); 10385 wait_delay += delay_interval * 2; 10386 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 10387 10388 if (!(txdctl & IXGBE_TXDCTL_ENABLE)) 10389 return; 10390 } 10391 10392 e_err(drv, "TXDCTL.ENABLE not cleared within the polling period\n"); 10393 } 10394 10395 static void ixgbe_disable_txr(struct ixgbe_adapter *adapter, 10396 struct ixgbe_ring *tx_ring) 10397 { 10398 set_bit(__IXGBE_TX_DISABLED, &tx_ring->state); 10399 ixgbe_disable_txr_hw(adapter, tx_ring); 10400 } 10401 10402 static void ixgbe_disable_rxr_hw(struct ixgbe_adapter *adapter, 10403 struct ixgbe_ring *rx_ring) 10404 { 10405 unsigned long wait_delay, delay_interval; 10406 struct ixgbe_hw *hw = &adapter->hw; 10407 u8 reg_idx = rx_ring->reg_idx; 10408 int wait_loop; 10409 u32 rxdctl; 10410 10411 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 10412 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 10413 rxdctl |= IXGBE_RXDCTL_SWFLSH; 10414 10415 /* write value back with RXDCTL.ENABLE bit cleared */ 10416 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 10417 10418 /* RXDCTL.EN may not change on 82598 if link is down, so skip it */ 10419 if (hw->mac.type == ixgbe_mac_82598EB && 10420 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 10421 return; 10422 10423 /* delay mechanism from ixgbe_disable_rx */ 10424 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 10425 10426 wait_loop = IXGBE_MAX_RX_DESC_POLL; 10427 wait_delay = delay_interval; 10428 10429 while (wait_loop--) { 10430 usleep_range(wait_delay, wait_delay + 10); 10431 wait_delay += delay_interval * 2; 10432 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 10433 10434 if (!(rxdctl & IXGBE_RXDCTL_ENABLE)) 10435 return; 10436 } 10437 10438 e_err(drv, "RXDCTL.ENABLE not cleared within the polling period\n"); 10439 } 10440 10441 static void ixgbe_reset_txr_stats(struct ixgbe_ring *tx_ring) 10442 { 10443 memset(&tx_ring->stats, 0, sizeof(tx_ring->stats)); 10444 memset(&tx_ring->tx_stats, 0, sizeof(tx_ring->tx_stats)); 10445 } 10446 10447 static void ixgbe_reset_rxr_stats(struct ixgbe_ring *rx_ring) 10448 { 10449 memset(&rx_ring->stats, 0, sizeof(rx_ring->stats)); 10450 memset(&rx_ring->rx_stats, 0, sizeof(rx_ring->rx_stats)); 10451 } 10452 10453 /** 10454 * ixgbe_txrx_ring_disable - Disable Rx/Tx/XDP Tx rings 10455 * @adapter: adapter structure 10456 * @ring: ring index 10457 * 10458 * This function disables a certain Rx/Tx/XDP Tx ring. The function 10459 * assumes that the netdev is running. 10460 **/ 10461 void ixgbe_txrx_ring_disable(struct ixgbe_adapter *adapter, int ring) 10462 { 10463 struct ixgbe_ring *rx_ring, *tx_ring, *xdp_ring; 10464 10465 rx_ring = adapter->rx_ring[ring]; 10466 tx_ring = adapter->tx_ring[ring]; 10467 xdp_ring = adapter->xdp_ring[ring]; 10468 10469 ixgbe_disable_txr(adapter, tx_ring); 10470 if (xdp_ring) 10471 ixgbe_disable_txr(adapter, xdp_ring); 10472 ixgbe_disable_rxr_hw(adapter, rx_ring); 10473 10474 if (xdp_ring) 10475 synchronize_rcu(); 10476 10477 /* Rx/Tx/XDP Tx share the same napi context. */ 10478 napi_disable(&rx_ring->q_vector->napi); 10479 10480 ixgbe_clean_tx_ring(tx_ring); 10481 if (xdp_ring) 10482 ixgbe_clean_tx_ring(xdp_ring); 10483 ixgbe_clean_rx_ring(rx_ring); 10484 10485 ixgbe_reset_txr_stats(tx_ring); 10486 if (xdp_ring) 10487 ixgbe_reset_txr_stats(xdp_ring); 10488 ixgbe_reset_rxr_stats(rx_ring); 10489 } 10490 10491 /** 10492 * ixgbe_txrx_ring_enable - Enable Rx/Tx/XDP Tx rings 10493 * @adapter: adapter structure 10494 * @ring: ring index 10495 * 10496 * This function enables a certain Rx/Tx/XDP Tx ring. The function 10497 * assumes that the netdev is running. 10498 **/ 10499 void ixgbe_txrx_ring_enable(struct ixgbe_adapter *adapter, int ring) 10500 { 10501 struct ixgbe_ring *rx_ring, *tx_ring, *xdp_ring; 10502 10503 rx_ring = adapter->rx_ring[ring]; 10504 tx_ring = adapter->tx_ring[ring]; 10505 xdp_ring = adapter->xdp_ring[ring]; 10506 10507 /* Rx/Tx/XDP Tx share the same napi context. */ 10508 napi_enable(&rx_ring->q_vector->napi); 10509 10510 ixgbe_configure_tx_ring(adapter, tx_ring); 10511 if (xdp_ring) 10512 ixgbe_configure_tx_ring(adapter, xdp_ring); 10513 ixgbe_configure_rx_ring(adapter, rx_ring); 10514 10515 clear_bit(__IXGBE_TX_DISABLED, &tx_ring->state); 10516 if (xdp_ring) 10517 clear_bit(__IXGBE_TX_DISABLED, &xdp_ring->state); 10518 } 10519 10520 /** 10521 * ixgbe_enumerate_functions - Get the number of ports this device has 10522 * @adapter: adapter structure 10523 * 10524 * This function enumerates the phsyical functions co-located on a single slot, 10525 * in order to determine how many ports a device has. This is most useful in 10526 * determining the required GT/s of PCIe bandwidth necessary for optimal 10527 * performance. 10528 **/ 10529 static inline int ixgbe_enumerate_functions(struct ixgbe_adapter *adapter) 10530 { 10531 struct pci_dev *entry, *pdev = adapter->pdev; 10532 int physfns = 0; 10533 10534 /* Some cards can not use the generic count PCIe functions method, 10535 * because they are behind a parent switch, so we hardcode these with 10536 * the correct number of functions. 10537 */ 10538 if (ixgbe_pcie_from_parent(&adapter->hw)) 10539 physfns = 4; 10540 10541 list_for_each_entry(entry, &adapter->pdev->bus->devices, bus_list) { 10542 /* don't count virtual functions */ 10543 if (entry->is_virtfn) 10544 continue; 10545 10546 /* When the devices on the bus don't all match our device ID, 10547 * we can't reliably determine the correct number of 10548 * functions. This can occur if a function has been direct 10549 * attached to a virtual machine using VT-d, for example. In 10550 * this case, simply return -1 to indicate this. 10551 */ 10552 if ((entry->vendor != pdev->vendor) || 10553 (entry->device != pdev->device)) 10554 return -1; 10555 10556 physfns++; 10557 } 10558 10559 return physfns; 10560 } 10561 10562 /** 10563 * ixgbe_wol_supported - Check whether device supports WoL 10564 * @adapter: the adapter private structure 10565 * @device_id: the device ID 10566 * @subdevice_id: the subsystem device ID 10567 * 10568 * This function is used by probe and ethtool to determine 10569 * which devices have WoL support 10570 * 10571 **/ 10572 bool ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id, 10573 u16 subdevice_id) 10574 { 10575 struct ixgbe_hw *hw = &adapter->hw; 10576 u16 wol_cap = adapter->eeprom_cap & IXGBE_DEVICE_CAPS_WOL_MASK; 10577 10578 /* WOL not supported on 82598 */ 10579 if (hw->mac.type == ixgbe_mac_82598EB) 10580 return false; 10581 10582 /* check eeprom to see if WOL is enabled for X540 and newer */ 10583 if (hw->mac.type >= ixgbe_mac_X540) { 10584 if ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0_1) || 10585 ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0) && 10586 (hw->bus.func == 0))) 10587 return true; 10588 } 10589 10590 /* WOL is determined based on device IDs for 82599 MACs */ 10591 switch (device_id) { 10592 case IXGBE_DEV_ID_82599_SFP: 10593 /* Only these subdevices could supports WOL */ 10594 switch (subdevice_id) { 10595 case IXGBE_SUBDEV_ID_82599_560FLR: 10596 case IXGBE_SUBDEV_ID_82599_LOM_SNAP6: 10597 case IXGBE_SUBDEV_ID_82599_SFP_WOL0: 10598 case IXGBE_SUBDEV_ID_82599_SFP_2OCP: 10599 /* only support first port */ 10600 if (hw->bus.func != 0) 10601 break; 10602 fallthrough; 10603 case IXGBE_SUBDEV_ID_82599_SP_560FLR: 10604 case IXGBE_SUBDEV_ID_82599_SFP: 10605 case IXGBE_SUBDEV_ID_82599_RNDC: 10606 case IXGBE_SUBDEV_ID_82599_ECNA_DP: 10607 case IXGBE_SUBDEV_ID_82599_SFP_1OCP: 10608 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM1: 10609 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM2: 10610 return true; 10611 } 10612 break; 10613 case IXGBE_DEV_ID_82599EN_SFP: 10614 /* Only these subdevices support WOL */ 10615 switch (subdevice_id) { 10616 case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1: 10617 return true; 10618 } 10619 break; 10620 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE: 10621 /* All except this subdevice support WOL */ 10622 if (subdevice_id != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ) 10623 return true; 10624 break; 10625 case IXGBE_DEV_ID_82599_KX4: 10626 return true; 10627 default: 10628 break; 10629 } 10630 10631 return false; 10632 } 10633 10634 /** 10635 * ixgbe_set_fw_version - Set FW version 10636 * @adapter: the adapter private structure 10637 * 10638 * This function is used by probe and ethtool to determine the FW version to 10639 * format to display. The FW version is taken from the EEPROM/NVM. 10640 */ 10641 static void ixgbe_set_fw_version(struct ixgbe_adapter *adapter) 10642 { 10643 struct ixgbe_hw *hw = &adapter->hw; 10644 struct ixgbe_nvm_version nvm_ver; 10645 10646 ixgbe_get_oem_prod_version(hw, &nvm_ver); 10647 if (nvm_ver.oem_valid) { 10648 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 10649 "%x.%x.%x", nvm_ver.oem_major, nvm_ver.oem_minor, 10650 nvm_ver.oem_release); 10651 return; 10652 } 10653 10654 ixgbe_get_etk_id(hw, &nvm_ver); 10655 ixgbe_get_orom_version(hw, &nvm_ver); 10656 10657 if (nvm_ver.or_valid) { 10658 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 10659 "0x%08x, %d.%d.%d", nvm_ver.etk_id, nvm_ver.or_major, 10660 nvm_ver.or_build, nvm_ver.or_patch); 10661 return; 10662 } 10663 10664 /* Set ETrack ID format */ 10665 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 10666 "0x%08x", nvm_ver.etk_id); 10667 } 10668 10669 /** 10670 * ixgbe_probe - Device Initialization Routine 10671 * @pdev: PCI device information struct 10672 * @ent: entry in ixgbe_pci_tbl 10673 * 10674 * Returns 0 on success, negative on failure 10675 * 10676 * ixgbe_probe initializes an adapter identified by a pci_dev structure. 10677 * The OS initialization, configuring of the adapter private structure, 10678 * and a hardware reset occur. 10679 **/ 10680 static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 10681 { 10682 struct net_device *netdev; 10683 struct ixgbe_adapter *adapter = NULL; 10684 struct ixgbe_hw *hw; 10685 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; 10686 unsigned int indices = MAX_TX_QUEUES; 10687 u8 part_str[IXGBE_PBANUM_LENGTH]; 10688 int i, err, expected_gts; 10689 bool disable_dev = false; 10690 #ifdef IXGBE_FCOE 10691 u16 device_caps; 10692 #endif 10693 u32 eec; 10694 10695 /* Catch broken hardware that put the wrong VF device ID in 10696 * the PCIe SR-IOV capability. 10697 */ 10698 if (pdev->is_virtfn) { 10699 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", 10700 pci_name(pdev), pdev->vendor, pdev->device); 10701 return -EINVAL; 10702 } 10703 10704 err = pci_enable_device_mem(pdev); 10705 if (err) 10706 return err; 10707 10708 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 10709 if (err) { 10710 dev_err(&pdev->dev, 10711 "No usable DMA configuration, aborting\n"); 10712 goto err_dma; 10713 } 10714 10715 err = pci_request_mem_regions(pdev, ixgbe_driver_name); 10716 if (err) { 10717 dev_err(&pdev->dev, 10718 "pci_request_selected_regions failed 0x%x\n", err); 10719 goto err_pci_reg; 10720 } 10721 10722 pci_enable_pcie_error_reporting(pdev); 10723 10724 pci_set_master(pdev); 10725 pci_save_state(pdev); 10726 10727 if (ii->mac == ixgbe_mac_82598EB) { 10728 #ifdef CONFIG_IXGBE_DCB 10729 /* 8 TC w/ 4 queues per TC */ 10730 indices = 4 * MAX_TRAFFIC_CLASS; 10731 #else 10732 indices = IXGBE_MAX_RSS_INDICES; 10733 #endif 10734 } 10735 10736 netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices); 10737 if (!netdev) { 10738 err = -ENOMEM; 10739 goto err_alloc_etherdev; 10740 } 10741 10742 SET_NETDEV_DEV(netdev, &pdev->dev); 10743 10744 adapter = netdev_priv(netdev); 10745 10746 adapter->netdev = netdev; 10747 adapter->pdev = pdev; 10748 hw = &adapter->hw; 10749 hw->back = adapter; 10750 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); 10751 10752 hw->hw_addr = ioremap(pci_resource_start(pdev, 0), 10753 pci_resource_len(pdev, 0)); 10754 adapter->io_addr = hw->hw_addr; 10755 if (!hw->hw_addr) { 10756 err = -EIO; 10757 goto err_ioremap; 10758 } 10759 10760 netdev->netdev_ops = &ixgbe_netdev_ops; 10761 ixgbe_set_ethtool_ops(netdev); 10762 netdev->watchdog_timeo = 5 * HZ; 10763 strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); 10764 10765 /* Setup hw api */ 10766 hw->mac.ops = *ii->mac_ops; 10767 hw->mac.type = ii->mac; 10768 hw->mvals = ii->mvals; 10769 if (ii->link_ops) 10770 hw->link.ops = *ii->link_ops; 10771 10772 /* EEPROM */ 10773 hw->eeprom.ops = *ii->eeprom_ops; 10774 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); 10775 if (ixgbe_removed(hw->hw_addr)) { 10776 err = -EIO; 10777 goto err_ioremap; 10778 } 10779 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */ 10780 if (!(eec & BIT(8))) 10781 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic; 10782 10783 /* PHY */ 10784 hw->phy.ops = *ii->phy_ops; 10785 hw->phy.sfp_type = ixgbe_sfp_type_unknown; 10786 /* ixgbe_identify_phy_generic will set prtad and mmds properly */ 10787 hw->phy.mdio.prtad = MDIO_PRTAD_NONE; 10788 hw->phy.mdio.mmds = 0; 10789 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 10790 hw->phy.mdio.dev = netdev; 10791 hw->phy.mdio.mdio_read = ixgbe_mdio_read; 10792 hw->phy.mdio.mdio_write = ixgbe_mdio_write; 10793 10794 /* setup the private structure */ 10795 err = ixgbe_sw_init(adapter, ii); 10796 if (err) 10797 goto err_sw_init; 10798 10799 if (adapter->hw.mac.type == ixgbe_mac_82599EB) 10800 adapter->flags2 |= IXGBE_FLAG2_AUTO_DISABLE_VF; 10801 10802 switch (adapter->hw.mac.type) { 10803 case ixgbe_mac_X550: 10804 case ixgbe_mac_X550EM_x: 10805 netdev->udp_tunnel_nic_info = &ixgbe_udp_tunnels_x550; 10806 break; 10807 case ixgbe_mac_x550em_a: 10808 netdev->udp_tunnel_nic_info = &ixgbe_udp_tunnels_x550em_a; 10809 break; 10810 default: 10811 break; 10812 } 10813 10814 /* Make sure the SWFW semaphore is in a valid state */ 10815 if (hw->mac.ops.init_swfw_sync) 10816 hw->mac.ops.init_swfw_sync(hw); 10817 10818 /* Make it possible the adapter to be woken up via WOL */ 10819 switch (adapter->hw.mac.type) { 10820 case ixgbe_mac_82599EB: 10821 case ixgbe_mac_X540: 10822 case ixgbe_mac_X550: 10823 case ixgbe_mac_X550EM_x: 10824 case ixgbe_mac_x550em_a: 10825 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 10826 break; 10827 default: 10828 break; 10829 } 10830 10831 /* 10832 * If there is a fan on this device and it has failed log the 10833 * failure. 10834 */ 10835 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { 10836 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); 10837 if (esdp & IXGBE_ESDP_SDP1) 10838 e_crit(probe, "Fan has stopped, replace the adapter\n"); 10839 } 10840 10841 if (allow_unsupported_sfp) 10842 hw->allow_unsupported_sfp = allow_unsupported_sfp; 10843 10844 /* reset_hw fills in the perm_addr as well */ 10845 hw->phy.reset_if_overtemp = true; 10846 err = hw->mac.ops.reset_hw(hw); 10847 hw->phy.reset_if_overtemp = false; 10848 ixgbe_set_eee_capable(adapter); 10849 if (err == IXGBE_ERR_SFP_NOT_PRESENT) { 10850 err = 0; 10851 } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { 10852 e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n"); 10853 e_dev_err("Reload the driver after installing a supported module.\n"); 10854 goto err_sw_init; 10855 } else if (err) { 10856 e_dev_err("HW Init failed: %d\n", err); 10857 goto err_sw_init; 10858 } 10859 10860 #ifdef CONFIG_PCI_IOV 10861 /* SR-IOV not supported on the 82598 */ 10862 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 10863 goto skip_sriov; 10864 /* Mailbox */ 10865 ixgbe_init_mbx_params_pf(hw); 10866 hw->mbx.ops = ii->mbx_ops; 10867 pci_sriov_set_totalvfs(pdev, IXGBE_MAX_VFS_DRV_LIMIT); 10868 ixgbe_enable_sriov(adapter, max_vfs); 10869 skip_sriov: 10870 10871 #endif 10872 netdev->features = NETIF_F_SG | 10873 NETIF_F_TSO | 10874 NETIF_F_TSO6 | 10875 NETIF_F_RXHASH | 10876 NETIF_F_RXCSUM | 10877 NETIF_F_HW_CSUM; 10878 10879 #define IXGBE_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \ 10880 NETIF_F_GSO_GRE_CSUM | \ 10881 NETIF_F_GSO_IPXIP4 | \ 10882 NETIF_F_GSO_IPXIP6 | \ 10883 NETIF_F_GSO_UDP_TUNNEL | \ 10884 NETIF_F_GSO_UDP_TUNNEL_CSUM) 10885 10886 netdev->gso_partial_features = IXGBE_GSO_PARTIAL_FEATURES; 10887 netdev->features |= NETIF_F_GSO_PARTIAL | 10888 IXGBE_GSO_PARTIAL_FEATURES; 10889 10890 if (hw->mac.type >= ixgbe_mac_82599EB) 10891 netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_GSO_UDP_L4; 10892 10893 #ifdef CONFIG_IXGBE_IPSEC 10894 #define IXGBE_ESP_FEATURES (NETIF_F_HW_ESP | \ 10895 NETIF_F_HW_ESP_TX_CSUM | \ 10896 NETIF_F_GSO_ESP) 10897 10898 if (adapter->ipsec) 10899 netdev->features |= IXGBE_ESP_FEATURES; 10900 #endif 10901 /* copy netdev features into list of user selectable features */ 10902 netdev->hw_features |= netdev->features | 10903 NETIF_F_HW_VLAN_CTAG_FILTER | 10904 NETIF_F_HW_VLAN_CTAG_RX | 10905 NETIF_F_HW_VLAN_CTAG_TX | 10906 NETIF_F_RXALL | 10907 NETIF_F_HW_L2FW_DOFFLOAD; 10908 10909 if (hw->mac.type >= ixgbe_mac_82599EB) 10910 netdev->hw_features |= NETIF_F_NTUPLE | 10911 NETIF_F_HW_TC; 10912 10913 netdev->features |= NETIF_F_HIGHDMA; 10914 10915 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; 10916 netdev->hw_enc_features |= netdev->vlan_features; 10917 netdev->mpls_features |= NETIF_F_SG | 10918 NETIF_F_TSO | 10919 NETIF_F_TSO6 | 10920 NETIF_F_HW_CSUM; 10921 netdev->mpls_features |= IXGBE_GSO_PARTIAL_FEATURES; 10922 10923 /* set this bit last since it cannot be part of vlan_features */ 10924 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | 10925 NETIF_F_HW_VLAN_CTAG_RX | 10926 NETIF_F_HW_VLAN_CTAG_TX; 10927 10928 netdev->priv_flags |= IFF_UNICAST_FLT; 10929 netdev->priv_flags |= IFF_SUPP_NOFCS; 10930 10931 /* MTU range: 68 - 9710 */ 10932 netdev->min_mtu = ETH_MIN_MTU; 10933 netdev->max_mtu = IXGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN); 10934 10935 #ifdef CONFIG_IXGBE_DCB 10936 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE) 10937 netdev->dcbnl_ops = &ixgbe_dcbnl_ops; 10938 #endif 10939 10940 #ifdef IXGBE_FCOE 10941 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) { 10942 unsigned int fcoe_l; 10943 10944 if (hw->mac.ops.get_device_caps) { 10945 hw->mac.ops.get_device_caps(hw, &device_caps); 10946 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS) 10947 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 10948 } 10949 10950 10951 fcoe_l = min_t(int, IXGBE_FCRETA_SIZE, num_online_cpus()); 10952 adapter->ring_feature[RING_F_FCOE].limit = fcoe_l; 10953 10954 netdev->features |= NETIF_F_FSO | 10955 NETIF_F_FCOE_CRC; 10956 10957 netdev->vlan_features |= NETIF_F_FSO | 10958 NETIF_F_FCOE_CRC | 10959 NETIF_F_FCOE_MTU; 10960 } 10961 #endif /* IXGBE_FCOE */ 10962 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) 10963 netdev->hw_features |= NETIF_F_LRO; 10964 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 10965 netdev->features |= NETIF_F_LRO; 10966 10967 if (ixgbe_check_fw_error(adapter)) { 10968 err = -EIO; 10969 goto err_sw_init; 10970 } 10971 10972 /* make sure the EEPROM is good */ 10973 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) { 10974 e_dev_err("The EEPROM Checksum Is Not Valid\n"); 10975 err = -EIO; 10976 goto err_sw_init; 10977 } 10978 10979 eth_platform_get_mac_address(&adapter->pdev->dev, 10980 adapter->hw.mac.perm_addr); 10981 10982 eth_hw_addr_set(netdev, hw->mac.perm_addr); 10983 10984 if (!is_valid_ether_addr(netdev->dev_addr)) { 10985 e_dev_err("invalid MAC address\n"); 10986 err = -EIO; 10987 goto err_sw_init; 10988 } 10989 10990 /* Set hw->mac.addr to permanent MAC address */ 10991 ether_addr_copy(hw->mac.addr, hw->mac.perm_addr); 10992 ixgbe_mac_set_default_filter(adapter); 10993 10994 timer_setup(&adapter->service_timer, ixgbe_service_timer, 0); 10995 10996 if (ixgbe_removed(hw->hw_addr)) { 10997 err = -EIO; 10998 goto err_sw_init; 10999 } 11000 INIT_WORK(&adapter->service_task, ixgbe_service_task); 11001 set_bit(__IXGBE_SERVICE_INITED, &adapter->state); 11002 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 11003 11004 err = ixgbe_init_interrupt_scheme(adapter); 11005 if (err) 11006 goto err_sw_init; 11007 11008 for (i = 0; i < adapter->num_rx_queues; i++) 11009 u64_stats_init(&adapter->rx_ring[i]->syncp); 11010 for (i = 0; i < adapter->num_tx_queues; i++) 11011 u64_stats_init(&adapter->tx_ring[i]->syncp); 11012 for (i = 0; i < adapter->num_xdp_queues; i++) 11013 u64_stats_init(&adapter->xdp_ring[i]->syncp); 11014 11015 /* WOL not supported for all devices */ 11016 adapter->wol = 0; 11017 hw->eeprom.ops.read(hw, 0x2c, &adapter->eeprom_cap); 11018 hw->wol_enabled = ixgbe_wol_supported(adapter, pdev->device, 11019 pdev->subsystem_device); 11020 if (hw->wol_enabled) 11021 adapter->wol = IXGBE_WUFC_MAG; 11022 11023 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); 11024 11025 /* save off EEPROM version number */ 11026 ixgbe_set_fw_version(adapter); 11027 11028 /* pick up the PCI bus settings for reporting later */ 11029 if (ixgbe_pcie_from_parent(hw)) 11030 ixgbe_get_parent_bus_info(adapter); 11031 else 11032 hw->mac.ops.get_bus_info(hw); 11033 11034 /* calculate the expected PCIe bandwidth required for optimal 11035 * performance. Note that some older parts will never have enough 11036 * bandwidth due to being older generation PCIe parts. We clamp these 11037 * parts to ensure no warning is displayed if it can't be fixed. 11038 */ 11039 switch (hw->mac.type) { 11040 case ixgbe_mac_82598EB: 11041 expected_gts = min(ixgbe_enumerate_functions(adapter) * 10, 16); 11042 break; 11043 default: 11044 expected_gts = ixgbe_enumerate_functions(adapter) * 10; 11045 break; 11046 } 11047 11048 /* don't check link if we failed to enumerate functions */ 11049 if (expected_gts > 0) 11050 ixgbe_check_minimum_link(adapter, expected_gts); 11051 11052 err = ixgbe_read_pba_string_generic(hw, part_str, sizeof(part_str)); 11053 if (err) 11054 strlcpy(part_str, "Unknown", sizeof(part_str)); 11055 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present) 11056 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n", 11057 hw->mac.type, hw->phy.type, hw->phy.sfp_type, 11058 part_str); 11059 else 11060 e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n", 11061 hw->mac.type, hw->phy.type, part_str); 11062 11063 e_dev_info("%pM\n", netdev->dev_addr); 11064 11065 /* reset the hardware with the new settings */ 11066 err = hw->mac.ops.start_hw(hw); 11067 if (err == IXGBE_ERR_EEPROM_VERSION) { 11068 /* We are running on a pre-production device, log a warning */ 11069 e_dev_warn("This device is a pre-production adapter/LOM. " 11070 "Please be aware there may be issues associated " 11071 "with your hardware. If you are experiencing " 11072 "problems please contact your Intel or hardware " 11073 "representative who provided you with this " 11074 "hardware.\n"); 11075 } 11076 strcpy(netdev->name, "eth%d"); 11077 pci_set_drvdata(pdev, adapter); 11078 err = register_netdev(netdev); 11079 if (err) 11080 goto err_register; 11081 11082 11083 /* power down the optics for 82599 SFP+ fiber */ 11084 if (hw->mac.ops.disable_tx_laser) 11085 hw->mac.ops.disable_tx_laser(hw); 11086 11087 /* carrier off reporting is important to ethtool even BEFORE open */ 11088 netif_carrier_off(netdev); 11089 11090 #ifdef CONFIG_IXGBE_DCA 11091 if (dca_add_requester(&pdev->dev) == 0) { 11092 adapter->flags |= IXGBE_FLAG_DCA_ENABLED; 11093 ixgbe_setup_dca(adapter); 11094 } 11095 #endif 11096 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 11097 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs); 11098 for (i = 0; i < adapter->num_vfs; i++) 11099 ixgbe_vf_configuration(pdev, (i | 0x10000000)); 11100 } 11101 11102 /* firmware requires driver version to be 0xFFFFFFFF 11103 * since os does not support feature 11104 */ 11105 if (hw->mac.ops.set_fw_drv_ver) 11106 hw->mac.ops.set_fw_drv_ver(hw, 0xFF, 0xFF, 0xFF, 0xFF, 11107 sizeof(UTS_RELEASE) - 1, 11108 UTS_RELEASE); 11109 11110 /* add san mac addr to netdev */ 11111 ixgbe_add_sanmac_netdev(netdev); 11112 11113 e_dev_info("%s\n", ixgbe_default_device_descr); 11114 11115 #ifdef CONFIG_IXGBE_HWMON 11116 if (ixgbe_sysfs_init(adapter)) 11117 e_err(probe, "failed to allocate sysfs resources\n"); 11118 #endif /* CONFIG_IXGBE_HWMON */ 11119 11120 ixgbe_dbg_adapter_init(adapter); 11121 11122 /* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */ 11123 if (ixgbe_mng_enabled(hw) && ixgbe_is_sfp(hw) && hw->mac.ops.setup_link) 11124 hw->mac.ops.setup_link(hw, 11125 IXGBE_LINK_SPEED_10GB_FULL | IXGBE_LINK_SPEED_1GB_FULL, 11126 true); 11127 11128 err = ixgbe_mii_bus_init(hw); 11129 if (err) 11130 goto err_netdev; 11131 11132 return 0; 11133 11134 err_netdev: 11135 unregister_netdev(netdev); 11136 err_register: 11137 ixgbe_release_hw_control(adapter); 11138 ixgbe_clear_interrupt_scheme(adapter); 11139 err_sw_init: 11140 ixgbe_disable_sriov(adapter); 11141 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; 11142 iounmap(adapter->io_addr); 11143 kfree(adapter->jump_tables[0]); 11144 kfree(adapter->mac_table); 11145 kfree(adapter->rss_key); 11146 bitmap_free(adapter->af_xdp_zc_qps); 11147 err_ioremap: 11148 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); 11149 free_netdev(netdev); 11150 err_alloc_etherdev: 11151 pci_disable_pcie_error_reporting(pdev); 11152 pci_release_mem_regions(pdev); 11153 err_pci_reg: 11154 err_dma: 11155 if (!adapter || disable_dev) 11156 pci_disable_device(pdev); 11157 return err; 11158 } 11159 11160 /** 11161 * ixgbe_remove - Device Removal Routine 11162 * @pdev: PCI device information struct 11163 * 11164 * ixgbe_remove is called by the PCI subsystem to alert the driver 11165 * that it should release a PCI device. The could be caused by a 11166 * Hot-Plug event, or because the driver is going to be removed from 11167 * memory. 11168 **/ 11169 static void ixgbe_remove(struct pci_dev *pdev) 11170 { 11171 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 11172 struct net_device *netdev; 11173 bool disable_dev; 11174 int i; 11175 11176 /* if !adapter then we already cleaned up in probe */ 11177 if (!adapter) 11178 return; 11179 11180 netdev = adapter->netdev; 11181 ixgbe_dbg_adapter_exit(adapter); 11182 11183 set_bit(__IXGBE_REMOVING, &adapter->state); 11184 cancel_work_sync(&adapter->service_task); 11185 11186 if (adapter->mii_bus) 11187 mdiobus_unregister(adapter->mii_bus); 11188 11189 #ifdef CONFIG_IXGBE_DCA 11190 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { 11191 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; 11192 dca_remove_requester(&pdev->dev); 11193 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 11194 IXGBE_DCA_CTRL_DCA_DISABLE); 11195 } 11196 11197 #endif 11198 #ifdef CONFIG_IXGBE_HWMON 11199 ixgbe_sysfs_exit(adapter); 11200 #endif /* CONFIG_IXGBE_HWMON */ 11201 11202 /* remove the added san mac */ 11203 ixgbe_del_sanmac_netdev(netdev); 11204 11205 #ifdef CONFIG_PCI_IOV 11206 ixgbe_disable_sriov(adapter); 11207 #endif 11208 if (netdev->reg_state == NETREG_REGISTERED) 11209 unregister_netdev(netdev); 11210 11211 ixgbe_stop_ipsec_offload(adapter); 11212 ixgbe_clear_interrupt_scheme(adapter); 11213 11214 ixgbe_release_hw_control(adapter); 11215 11216 #ifdef CONFIG_DCB 11217 kfree(adapter->ixgbe_ieee_pfc); 11218 kfree(adapter->ixgbe_ieee_ets); 11219 11220 #endif 11221 iounmap(adapter->io_addr); 11222 pci_release_mem_regions(pdev); 11223 11224 e_dev_info("complete\n"); 11225 11226 for (i = 0; i < IXGBE_MAX_LINK_HANDLE; i++) { 11227 if (adapter->jump_tables[i]) { 11228 kfree(adapter->jump_tables[i]->input); 11229 kfree(adapter->jump_tables[i]->mask); 11230 } 11231 kfree(adapter->jump_tables[i]); 11232 } 11233 11234 kfree(adapter->mac_table); 11235 kfree(adapter->rss_key); 11236 bitmap_free(adapter->af_xdp_zc_qps); 11237 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); 11238 free_netdev(netdev); 11239 11240 pci_disable_pcie_error_reporting(pdev); 11241 11242 if (disable_dev) 11243 pci_disable_device(pdev); 11244 } 11245 11246 /** 11247 * ixgbe_io_error_detected - called when PCI error is detected 11248 * @pdev: Pointer to PCI device 11249 * @state: The current pci connection state 11250 * 11251 * This function is called after a PCI bus error affecting 11252 * this device has been detected. 11253 */ 11254 static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, 11255 pci_channel_state_t state) 11256 { 11257 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 11258 struct net_device *netdev = adapter->netdev; 11259 11260 #ifdef CONFIG_PCI_IOV 11261 struct ixgbe_hw *hw = &adapter->hw; 11262 struct pci_dev *bdev, *vfdev; 11263 u32 dw0, dw1, dw2, dw3; 11264 int vf, pos; 11265 u16 req_id, pf_func; 11266 11267 if (adapter->hw.mac.type == ixgbe_mac_82598EB || 11268 adapter->num_vfs == 0) 11269 goto skip_bad_vf_detection; 11270 11271 bdev = pdev->bus->self; 11272 while (bdev && (pci_pcie_type(bdev) != PCI_EXP_TYPE_ROOT_PORT)) 11273 bdev = bdev->bus->self; 11274 11275 if (!bdev) 11276 goto skip_bad_vf_detection; 11277 11278 pos = pci_find_ext_capability(bdev, PCI_EXT_CAP_ID_ERR); 11279 if (!pos) 11280 goto skip_bad_vf_detection; 11281 11282 dw0 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG); 11283 dw1 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 4); 11284 dw2 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 8); 11285 dw3 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 12); 11286 if (ixgbe_removed(hw->hw_addr)) 11287 goto skip_bad_vf_detection; 11288 11289 req_id = dw1 >> 16; 11290 /* On the 82599 if bit 7 of the requestor ID is set then it's a VF */ 11291 if (!(req_id & 0x0080)) 11292 goto skip_bad_vf_detection; 11293 11294 pf_func = req_id & 0x01; 11295 if ((pf_func & 1) == (pdev->devfn & 1)) { 11296 unsigned int device_id; 11297 11298 vf = (req_id & 0x7F) >> 1; 11299 e_dev_err("VF %d has caused a PCIe error\n", vf); 11300 e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: " 11301 "%8.8x\tdw3: %8.8x\n", 11302 dw0, dw1, dw2, dw3); 11303 switch (adapter->hw.mac.type) { 11304 case ixgbe_mac_82599EB: 11305 device_id = IXGBE_82599_VF_DEVICE_ID; 11306 break; 11307 case ixgbe_mac_X540: 11308 device_id = IXGBE_X540_VF_DEVICE_ID; 11309 break; 11310 case ixgbe_mac_X550: 11311 device_id = IXGBE_DEV_ID_X550_VF; 11312 break; 11313 case ixgbe_mac_X550EM_x: 11314 device_id = IXGBE_DEV_ID_X550EM_X_VF; 11315 break; 11316 case ixgbe_mac_x550em_a: 11317 device_id = IXGBE_DEV_ID_X550EM_A_VF; 11318 break; 11319 default: 11320 device_id = 0; 11321 break; 11322 } 11323 11324 /* Find the pci device of the offending VF */ 11325 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, device_id, NULL); 11326 while (vfdev) { 11327 if (vfdev->devfn == (req_id & 0xFF)) 11328 break; 11329 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, 11330 device_id, vfdev); 11331 } 11332 /* 11333 * There's a slim chance the VF could have been hot plugged, 11334 * so if it is no longer present we don't need to issue the 11335 * VFLR. Just clean up the AER in that case. 11336 */ 11337 if (vfdev) { 11338 pcie_flr(vfdev); 11339 /* Free device reference count */ 11340 pci_dev_put(vfdev); 11341 } 11342 } 11343 11344 /* 11345 * Even though the error may have occurred on the other port 11346 * we still need to increment the vf error reference count for 11347 * both ports because the I/O resume function will be called 11348 * for both of them. 11349 */ 11350 adapter->vferr_refcount++; 11351 11352 return PCI_ERS_RESULT_RECOVERED; 11353 11354 skip_bad_vf_detection: 11355 #endif /* CONFIG_PCI_IOV */ 11356 if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) 11357 return PCI_ERS_RESULT_DISCONNECT; 11358 11359 if (!netif_device_present(netdev)) 11360 return PCI_ERS_RESULT_DISCONNECT; 11361 11362 rtnl_lock(); 11363 netif_device_detach(netdev); 11364 11365 if (netif_running(netdev)) 11366 ixgbe_close_suspend(adapter); 11367 11368 if (state == pci_channel_io_perm_failure) { 11369 rtnl_unlock(); 11370 return PCI_ERS_RESULT_DISCONNECT; 11371 } 11372 11373 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) 11374 pci_disable_device(pdev); 11375 rtnl_unlock(); 11376 11377 /* Request a slot reset. */ 11378 return PCI_ERS_RESULT_NEED_RESET; 11379 } 11380 11381 /** 11382 * ixgbe_io_slot_reset - called after the pci bus has been reset. 11383 * @pdev: Pointer to PCI device 11384 * 11385 * Restart the card from scratch, as if from a cold-boot. 11386 */ 11387 static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) 11388 { 11389 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 11390 pci_ers_result_t result; 11391 11392 if (pci_enable_device_mem(pdev)) { 11393 e_err(probe, "Cannot re-enable PCI device after reset.\n"); 11394 result = PCI_ERS_RESULT_DISCONNECT; 11395 } else { 11396 smp_mb__before_atomic(); 11397 clear_bit(__IXGBE_DISABLED, &adapter->state); 11398 adapter->hw.hw_addr = adapter->io_addr; 11399 pci_set_master(pdev); 11400 pci_restore_state(pdev); 11401 pci_save_state(pdev); 11402 11403 pci_wake_from_d3(pdev, false); 11404 11405 ixgbe_reset(adapter); 11406 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 11407 result = PCI_ERS_RESULT_RECOVERED; 11408 } 11409 11410 return result; 11411 } 11412 11413 /** 11414 * ixgbe_io_resume - called when traffic can start flowing again. 11415 * @pdev: Pointer to PCI device 11416 * 11417 * This callback is called when the error recovery driver tells us that 11418 * its OK to resume normal operation. 11419 */ 11420 static void ixgbe_io_resume(struct pci_dev *pdev) 11421 { 11422 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 11423 struct net_device *netdev = adapter->netdev; 11424 11425 #ifdef CONFIG_PCI_IOV 11426 if (adapter->vferr_refcount) { 11427 e_info(drv, "Resuming after VF err\n"); 11428 adapter->vferr_refcount--; 11429 return; 11430 } 11431 11432 #endif 11433 rtnl_lock(); 11434 if (netif_running(netdev)) 11435 ixgbe_open(netdev); 11436 11437 netif_device_attach(netdev); 11438 rtnl_unlock(); 11439 } 11440 11441 static const struct pci_error_handlers ixgbe_err_handler = { 11442 .error_detected = ixgbe_io_error_detected, 11443 .slot_reset = ixgbe_io_slot_reset, 11444 .resume = ixgbe_io_resume, 11445 }; 11446 11447 static SIMPLE_DEV_PM_OPS(ixgbe_pm_ops, ixgbe_suspend, ixgbe_resume); 11448 11449 static struct pci_driver ixgbe_driver = { 11450 .name = ixgbe_driver_name, 11451 .id_table = ixgbe_pci_tbl, 11452 .probe = ixgbe_probe, 11453 .remove = ixgbe_remove, 11454 .driver.pm = &ixgbe_pm_ops, 11455 .shutdown = ixgbe_shutdown, 11456 .sriov_configure = ixgbe_pci_sriov_configure, 11457 .err_handler = &ixgbe_err_handler 11458 }; 11459 11460 /** 11461 * ixgbe_init_module - Driver Registration Routine 11462 * 11463 * ixgbe_init_module is the first routine called when the driver is 11464 * loaded. All it does is register with the PCI subsystem. 11465 **/ 11466 static int __init ixgbe_init_module(void) 11467 { 11468 int ret; 11469 pr_info("%s\n", ixgbe_driver_string); 11470 pr_info("%s\n", ixgbe_copyright); 11471 11472 ixgbe_wq = create_singlethread_workqueue(ixgbe_driver_name); 11473 if (!ixgbe_wq) { 11474 pr_err("%s: Failed to create workqueue\n", ixgbe_driver_name); 11475 return -ENOMEM; 11476 } 11477 11478 ixgbe_dbg_init(); 11479 11480 ret = pci_register_driver(&ixgbe_driver); 11481 if (ret) { 11482 destroy_workqueue(ixgbe_wq); 11483 ixgbe_dbg_exit(); 11484 return ret; 11485 } 11486 11487 #ifdef CONFIG_IXGBE_DCA 11488 dca_register_notify(&dca_notifier); 11489 #endif 11490 11491 return 0; 11492 } 11493 11494 module_init(ixgbe_init_module); 11495 11496 /** 11497 * ixgbe_exit_module - Driver Exit Cleanup Routine 11498 * 11499 * ixgbe_exit_module is called just before the driver is removed 11500 * from memory. 11501 **/ 11502 static void __exit ixgbe_exit_module(void) 11503 { 11504 #ifdef CONFIG_IXGBE_DCA 11505 dca_unregister_notify(&dca_notifier); 11506 #endif 11507 pci_unregister_driver(&ixgbe_driver); 11508 11509 ixgbe_dbg_exit(); 11510 if (ixgbe_wq) { 11511 destroy_workqueue(ixgbe_wq); 11512 ixgbe_wq = NULL; 11513 } 11514 } 11515 11516 #ifdef CONFIG_IXGBE_DCA 11517 static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event, 11518 void *p) 11519 { 11520 int ret_val; 11521 11522 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event, 11523 __ixgbe_notify_dca); 11524 11525 return ret_val ? NOTIFY_BAD : NOTIFY_DONE; 11526 } 11527 11528 #endif /* CONFIG_IXGBE_DCA */ 11529 11530 module_exit(ixgbe_exit_module); 11531 11532 /* ixgbe_main.c */ 11533