| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Alexander Duyck | 16814 | 34.50% | 239 | 28.18% |
| John Fastabend | 5577 | 11.44% | 47 | 5.54% |
| Auke-Jan H Kok | 3592 | 7.37% | 4 | 0.47% |
| Donald Skidmore | 2580 | 5.29% | 73 | 8.61% |
| Mark D Rustad | 2019 | 4.14% | 43 | 5.07% |
| Jacob E Keller | 1880 | 3.86% | 41 | 4.83% |
| Emil Tantilov | 1735 | 3.56% | 52 | 6.13% |
| Peter P. Waskiewicz Jr | 1699 | 3.49% | 27 | 3.18% |
| Taku Izumi | 1462 | 3.00% | 1 | 0.12% |
| Jesse Brandeburg | 1155 | 2.37% | 32 | 3.77% |
| Björn Töpel | 1044 | 2.14% | 5 | 0.59% |
| Amritha Nambiar | 994 | 2.04% | 5 | 0.59% |
| Greg Rose | 876 | 1.80% | 17 | 2.00% |
| Ayyappan Veeraiyan | 764 | 1.57% | 9 | 1.06% |
| Jeb J. Cramer | 385 | 0.79% | 1 | 0.12% |
| Sridhar Samudrala | 383 | 0.79% | 2 | 0.24% |
| Vladislav Zolotarov | 360 | 0.74% | 2 | 0.24% |
| Yi Zou | 342 | 0.70% | 16 | 1.89% |
| Usha Ketineni | 317 | 0.65% | 1 | 0.12% |
| Ben Hutchings | 296 | 0.61% | 3 | 0.35% |
| Tony Nguyen | 295 | 0.61% | 10 | 1.18% |
| Shannon Nelson | 294 | 0.60% | 11 | 1.30% |
| Paul Greenwalt | 265 | 0.54% | 5 | 0.59% |
| Jesper Dangaard Brouer | 260 | 0.53% | 11 | 1.30% |
| Jiri Pirko | 253 | 0.52% | 11 | 1.30% |
| Joe Perches | 243 | 0.50% | 6 | 0.71% |
| Mallikarjuna R Chilakala | 237 | 0.49% | 11 | 1.30% |
| Daniel Borkmann | 203 | 0.42% | 6 | 0.71% |
| David Ahern | 183 | 0.38% | 1 | 0.12% |
| Eric Dumazet | 154 | 0.32% | 6 | 0.71% |
| Sebastian Basierski | 152 | 0.31% | 1 | 0.12% |
| Jeff Kirsher | 127 | 0.26% | 7 | 0.83% |
| Stephen Douthit | 105 | 0.22% | 2 | 0.24% |
| Rostislav Pehlivanov | 100 | 0.21% | 1 | 0.12% |
| Rafael J. Wysocki | 99 | 0.20% | 1 | 0.12% |
| Jesse Gross | 94 | 0.19% | 1 | 0.12% |
| Sowmini Varadhan | 90 | 0.18% | 3 | 0.35% |
| Stephen Hemminger | 72 | 0.15% | 11 | 1.30% |
| Joshua Hay | 68 | 0.14% | 4 | 0.47% |
| Ben Greear | 66 | 0.14% | 3 | 0.35% |
| Paolo Abeni | 63 | 0.13% | 2 | 0.24% |
| Radoslaw Tyl | 59 | 0.12% | 2 | 0.24% |
| Magnus Karlsson | 57 | 0.12% | 1 | 0.12% |
| Liwei Song | 56 | 0.11% | 1 | 0.12% |
| Cathy Zhou | 51 | 0.10% | 1 | 0.12% |
| Fan Du | 49 | 0.10% | 1 | 0.12% |
| Neerav Parikh | 47 | 0.10% | 3 | 0.35% |
| Jakub Kiciński | 44 | 0.09% | 5 | 0.59% |
| Andy Gospodarek | 34 | 0.07% | 1 | 0.12% |
| Amir Hanania | 34 | 0.07% | 1 | 0.12% |
| Scott Peterson | 34 | 0.07% | 1 | 0.12% |
| Nicholas Nunley | 29 | 0.06% | 1 | 0.12% |
| Patrick McHardy | 26 | 0.05% | 4 | 0.47% |
| Thomas Graf | 25 | 0.05% | 2 | 0.24% |
| Américo Wang | 24 | 0.05% | 3 | 0.35% |
| Ajit Khaparde | 21 | 0.04% | 1 | 0.12% |
| Jarod Wilson | 21 | 0.04% | 1 | 0.12% |
| Kees Cook | 21 | 0.04% | 2 | 0.24% |
| Jeff Garzik | 20 | 0.04% | 1 | 0.12% |
| Catherine Sullivan | 16 | 0.03% | 1 | 0.12% |
| Martin KaFai Lau | 16 | 0.03% | 1 | 0.12% |
| Tushar Dave | 16 | 0.03% | 1 | 0.12% |
| Christopher Leech | 16 | 0.03% | 1 | 0.12% |
| Dan Carpenter | 13 | 0.03% | 1 | 0.12% |
| Mauro S. M. Rodrigues | 12 | 0.02% | 1 | 0.12% |
| Florian Westphal | 12 | 0.02% | 3 | 0.35% |
| Eric W. Biedermann | 11 | 0.02% | 2 | 0.24% |
| Eliezer Tamir | 10 | 0.02% | 1 | 0.12% |
| Wendy Xiong | 10 | 0.02% | 1 | 0.12% |
| Alex Williamson | 10 | 0.02% | 1 | 0.12% |
| François Romieu | 9 | 0.02% | 1 | 0.12% |
| Tejun Heo | 9 | 0.02% | 2 | 0.24% |
| Jason (Hui) Wang | 9 | 0.02% | 1 | 0.12% |
| Michael S. Tsirkin | 9 | 0.02% | 1 | 0.12% |
| Yang Hongyang | 8 | 0.02% | 2 | 0.24% |
| Song Liu | 8 | 0.02% | 1 | 0.12% |
| Scott Feldman | 8 | 0.02% | 2 | 0.24% |
| Yijing Wang | 8 | 0.02% | 2 | 0.24% |
| Hao Zheng | 7 | 0.01% | 1 | 0.12% |
| Martin K. Petersen | 7 | 0.01% | 1 | 0.12% |
| Ethan Zhao | 7 | 0.01% | 2 | 0.24% |
| Toshiaki Makita | 7 | 0.01% | 1 | 0.12% |
| Jeff Mahoney | 7 | 0.01% | 1 | 0.12% |
| Tom Herbert | 7 | 0.01% | 2 | 0.24% |
| Donald Dutile | 6 | 0.01% | 1 | 0.12% |
| Robert Love | 6 | 0.01% | 1 | 0.12% |
| Benoit Taine | 6 | 0.01% | 1 | 0.12% |
| Breno Leitão | 5 | 0.01% | 1 | 0.12% |
| Ondřej Hlavatý | 5 | 0.01% | 1 | 0.12% |
| Hiroshi Shimamoto | 5 | 0.01% | 1 | 0.12% |
| Nicolas Dichtel | 5 | 0.01% | 1 | 0.12% |
| Wei Yongjun | 5 | 0.01% | 1 | 0.12% |
| Petr Machata | 5 | 0.01% | 1 | 0.12% |
| Peter Zijlstra | 4 | 0.01% | 1 | 0.12% |
| John Hurley | 4 | 0.01% | 1 | 0.12% |
| Guillaume Gaudonville | 4 | 0.01% | 1 | 0.12% |
| Colin Ian King | 4 | 0.01% | 1 | 0.12% |
| Mark Rutland | 4 | 0.01% | 1 | 0.12% |
| gouji-new | 4 | 0.01% | 1 | 0.12% |
| Denis V. Lunev | 3 | 0.01% | 1 | 0.12% |
| Roopa Prabhu | 3 | 0.01% | 1 | 0.12% |
| Jean Sacren | 3 | 0.01% | 1 | 0.12% |
| Paul E. McKenney | 3 | 0.01% | 1 | 0.12% |
| Alexey Dobriyan | 3 | 0.01% | 1 | 0.12% |
| Lucy Liu | 3 | 0.01% | 1 | 0.12% |
| Johannes Thumshirn | 3 | 0.01% | 1 | 0.12% |
| Michal Hocko | 3 | 0.01% | 1 | 0.12% |
| Lior Levy | 3 | 0.01% | 1 | 0.12% |
| Hannes Frederic Sowa | 3 | 0.01% | 1 | 0.12% |
| Paul Gortmaker | 3 | 0.01% | 1 | 0.12% |
| Vlad Yasevich | 3 | 0.01% | 1 | 0.12% |
| Atita Shirwaikar | 2 | 0.00% | 1 | 0.12% |
| Jon Mason | 2 | 0.00% | 1 | 0.12% |
| Ian Campbell | 2 | 0.00% | 1 | 0.12% |
| Wang Chen | 2 | 0.00% | 1 | 0.12% |
| Michał Mirosław | 2 | 0.00% | 1 | 0.12% |
| Tobias Klauser | 2 | 0.00% | 1 | 0.12% |
| Christoph Hellwig | 2 | 0.00% | 1 | 0.12% |
| Tony Breeds | 2 | 0.00% | 1 | 0.12% |
| Russell King | 2 | 0.00% | 1 | 0.12% |
| Brian King | 1 | 0.00% | 1 | 0.12% |
| Junwei (Martin) Zhang | 1 | 0.00% | 1 | 0.12% |
| Qinghuang Feng | 1 | 0.00% | 1 | 0.12% |
| Björn Helgaas | 1 | 0.00% | 1 | 0.12% |
| Herbert Xu | 1 | 0.00% | 1 | 0.12% |
| Shmulik Ladkani | 1 | 0.00% | 1 | 0.12% |
| Rusty Russell | 1 | 0.00% | 1 | 0.12% |
| Sucheta Chakraborty | 1 | 0.00% | 1 | 0.12% |
| Tonghao Zhang | 1 | 0.00% | 1 | 0.12% |
| Nogah Frankel | 1 | 0.00% | 1 | 0.12% |
| Jia-Ju Bai | 1 | 0.00% | 1 | 0.12% |
| Sabrina Dubroca | 1 | 0.00% | 1 | 0.12% |
| Total | 48739 | 848 |
// SPDX-License-Identifier: GPL-2.0 /* Copyright(c) 1999 - 2018 Intel Corporation. */ #include <linux/types.h> #include <linux/module.h> #include <linux/pci.h> #include <linux/netdevice.h> #include <linux/vmalloc.h> #include <linux/string.h> #include <linux/in.h> #include <linux/interrupt.h> #include <linux/ip.h> #include <linux/tcp.h> #include <linux/sctp.h> #include <linux/pkt_sched.h> #include <linux/ipv6.h> #include <linux/slab.h> #include <net/checksum.h> #include <net/ip6_checksum.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/if.h> #include <linux/if_vlan.h> #include <linux/if_macvlan.h> #include <linux/if_bridge.h> #include <linux/prefetch.h> #include <linux/bpf.h> #include <linux/bpf_trace.h> #include <linux/atomic.h> #include <scsi/fc/fc_fcoe.h> #include <net/udp_tunnel.h> #include <net/pkt_cls.h> #include <net/tc_act/tc_gact.h> #include <net/tc_act/tc_mirred.h> #include <net/vxlan.h> #include <net/mpls.h> #include <net/xdp_sock.h> #include "ixgbe.h" #include "ixgbe_common.h" #include "ixgbe_dcb_82599.h" #include "ixgbe_phy.h" #include "ixgbe_sriov.h" #include "ixgbe_model.h" #include "ixgbe_txrx_common.h" char ixgbe_driver_name[] = "ixgbe"; static const char ixgbe_driver_string[] = "Intel(R) 10 Gigabit PCI Express Network Driver"; #ifdef IXGBE_FCOE char ixgbe_default_device_descr[] = "Intel(R) 10 Gigabit Network Connection"; #else static char ixgbe_default_device_descr[] = "Intel(R) 10 Gigabit Network Connection"; #endif #define DRV_VERSION "5.1.0-k" const char ixgbe_driver_version[] = DRV_VERSION; static const char ixgbe_copyright[] = "Copyright (c) 1999-2016 Intel Corporation."; 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"; static const struct ixgbe_info *ixgbe_info_tbl[] = { [board_82598] = &ixgbe_82598_info, [board_82599] = &ixgbe_82599_info, [board_X540] = &ixgbe_X540_info, [board_X550] = &ixgbe_X550_info, [board_X550EM_x] = &ixgbe_X550EM_x_info, [board_x550em_x_fw] = &ixgbe_x550em_x_fw_info, [board_x550em_a] = &ixgbe_x550em_a_info, [board_x550em_a_fw] = &ixgbe_x550em_a_fw_info, }; /* ixgbe_pci_tbl - PCI Device ID Table * * Wildcard entries (PCI_ANY_ID) should come last * Last entry must be all 0s * * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, * Class, Class Mask, private data (not used) } */ static const struct pci_device_id ixgbe_pci_tbl[] = { {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), board_82598 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T), board_X540 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_QSFP_SF_QP), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599EN_SFP), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF_QP), board_82599 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T1), board_X540 }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T), board_X550}, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T1), board_X550}, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KX4), board_X550EM_x}, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_XFI), board_X550EM_x}, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KR), board_X550EM_x}, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_10G_T), board_X550EM_x}, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_SFP), board_X550EM_x}, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_1G_T), board_x550em_x_fw}, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR), board_x550em_a }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR_L), board_x550em_a }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP_N), board_x550em_a }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII), board_x550em_a }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII_L), board_x550em_a }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_10G_T), board_x550em_a}, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP), board_x550em_a }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T), board_x550em_a_fw }, {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T_L), board_x550em_a_fw }, /* required last entry */ {0, } }; MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); #ifdef CONFIG_IXGBE_DCA static int ixgbe_notify_dca(struct notifier_block *, unsigned long event, void *p); static struct notifier_block dca_notifier = { .notifier_call = ixgbe_notify_dca, .next = NULL, .priority = 0 }; #endif #ifdef CONFIG_PCI_IOV static unsigned int max_vfs; module_param(max_vfs, uint, 0); MODULE_PARM_DESC(max_vfs, "Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)"); #endif /* CONFIG_PCI_IOV */ static unsigned int allow_unsupported_sfp; module_param(allow_unsupported_sfp, uint, 0); MODULE_PARM_DESC(allow_unsupported_sfp, "Allow unsupported and untested SFP+ modules on 82599-based adapters"); #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) static int debug = -1; module_param(debug, int, 0); MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); MODULE_LICENSE("GPL v2"); MODULE_VERSION(DRV_VERSION); static struct workqueue_struct *ixgbe_wq; static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev); static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *); static const struct net_device_ops ixgbe_netdev_ops; static bool netif_is_ixgbe(struct net_device *dev) { return dev && (dev->netdev_ops == &ixgbe_netdev_ops); } static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter, u32 reg, u16 *value) { struct pci_dev *parent_dev; struct pci_bus *parent_bus; parent_bus = adapter->pdev->bus->parent; if (!parent_bus) return -1; parent_dev = parent_bus->self; if (!parent_dev) return -1; if (!pci_is_pcie(parent_dev)) return -1; pcie_capability_read_word(parent_dev, reg, value); if (*value == IXGBE_FAILED_READ_CFG_WORD && ixgbe_check_cfg_remove(&adapter->hw, parent_dev)) return -1; return 0; } static s32 ixgbe_get_parent_bus_info(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u16 link_status = 0; int err; hw->bus.type = ixgbe_bus_type_pci_express; /* Get the negotiated link width and speed from PCI config space of the * parent, as this device is behind a switch */ err = ixgbe_read_pci_cfg_word_parent(adapter, 18, &link_status); /* assume caller will handle error case */ if (err) return err; hw->bus.width = ixgbe_convert_bus_width(link_status); hw->bus.speed = ixgbe_convert_bus_speed(link_status); return 0; } /** * ixgbe_check_from_parent - Determine whether PCIe info should come from parent * @hw: hw specific details * * This function is used by probe to determine whether a device's PCI-Express * bandwidth details should be gathered from the parent bus instead of from the * device. Used to ensure that various locations all have the correct device ID * checks. */ static inline bool ixgbe_pcie_from_parent(struct ixgbe_hw *hw) { switch (hw->device_id) { case IXGBE_DEV_ID_82599_SFP_SF_QP: case IXGBE_DEV_ID_82599_QSFP_SF_QP: return true; default: return false; } } static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter, int expected_gts) { struct ixgbe_hw *hw = &adapter->hw; struct pci_dev *pdev; /* Some devices are not connected over PCIe and thus do not negotiate * speed. These devices do not have valid bus info, and thus any report * we generate may not be correct. */ if (hw->bus.type == ixgbe_bus_type_internal) return; /* determine whether to use the parent device */ if (ixgbe_pcie_from_parent(&adapter->hw)) pdev = adapter->pdev->bus->parent->self; else pdev = adapter->pdev; pcie_print_link_status(pdev); } static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter) { if (!test_bit(__IXGBE_DOWN, &adapter->state) && !test_bit(__IXGBE_REMOVING, &adapter->state) && !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state)) queue_work(ixgbe_wq, &adapter->service_task); } static void ixgbe_remove_adapter(struct ixgbe_hw *hw) { struct ixgbe_adapter *adapter = hw->back; if (!hw->hw_addr) return; hw->hw_addr = NULL; e_dev_err("Adapter removed\n"); if (test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) ixgbe_service_event_schedule(adapter); } static u32 ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg) { u8 __iomem *reg_addr; u32 value; int i; reg_addr = READ_ONCE(hw->hw_addr); if (ixgbe_removed(reg_addr)) return IXGBE_FAILED_READ_REG; /* Register read of 0xFFFFFFF can indicate the adapter has been removed, * so perform several status register reads to determine if the adapter * has been removed. */ for (i = 0; i < IXGBE_FAILED_READ_RETRIES; i++) { value = readl(reg_addr + IXGBE_STATUS); if (value != IXGBE_FAILED_READ_REG) break; mdelay(3); } if (value == IXGBE_FAILED_READ_REG) ixgbe_remove_adapter(hw); else value = readl(reg_addr + reg); return value; } /** * ixgbe_read_reg - Read from device register * @hw: hw specific details * @reg: offset of register to read * * Returns : value read or IXGBE_FAILED_READ_REG if removed * * This function is used to read device registers. It checks for device * removal by confirming any read that returns all ones by checking the * status register value for all ones. This function avoids reading from * the hardware if a removal was previously detected in which case it * returns IXGBE_FAILED_READ_REG (all ones). */ u32 ixgbe_read_reg(struct ixgbe_hw *hw, u32 reg) { u8 __iomem *reg_addr = READ_ONCE(hw->hw_addr); u32 value; if (ixgbe_removed(reg_addr)) return IXGBE_FAILED_READ_REG; if (unlikely(hw->phy.nw_mng_if_sel & IXGBE_NW_MNG_IF_SEL_SGMII_ENABLE)) { struct ixgbe_adapter *adapter; int i; for (i = 0; i < 200; ++i) { value = readl(reg_addr + IXGBE_MAC_SGMII_BUSY); if (likely(!value)) goto writes_completed; if (value == IXGBE_FAILED_READ_REG) { ixgbe_remove_adapter(hw); return IXGBE_FAILED_READ_REG; } udelay(5); } adapter = hw->back; e_warn(hw, "register writes incomplete %08x\n", value); } writes_completed: value = readl(reg_addr + reg); if (unlikely(value == IXGBE_FAILED_READ_REG)) value = ixgbe_check_remove(hw, reg); return value; } static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev) { u16 value; pci_read_config_word(pdev, PCI_VENDOR_ID, &value); if (value == IXGBE_FAILED_READ_CFG_WORD) { ixgbe_remove_adapter(hw); return true; } return false; } u16 ixgbe_read_pci_cfg_word(struct ixgbe_hw *hw, u32 reg) { struct ixgbe_adapter *adapter = hw->back; u16 value; if (ixgbe_removed(hw->hw_addr)) return IXGBE_FAILED_READ_CFG_WORD; pci_read_config_word(adapter->pdev, reg, &value); if (value == IXGBE_FAILED_READ_CFG_WORD && ixgbe_check_cfg_remove(hw, adapter->pdev)) return IXGBE_FAILED_READ_CFG_WORD; return value; } #ifdef CONFIG_PCI_IOV static u32 ixgbe_read_pci_cfg_dword(struct ixgbe_hw *hw, u32 reg) { struct ixgbe_adapter *adapter = hw->back; u32 value; if (ixgbe_removed(hw->hw_addr)) return IXGBE_FAILED_READ_CFG_DWORD; pci_read_config_dword(adapter->pdev, reg, &value); if (value == IXGBE_FAILED_READ_CFG_DWORD && ixgbe_check_cfg_remove(hw, adapter->pdev)) return IXGBE_FAILED_READ_CFG_DWORD; return value; } #endif /* CONFIG_PCI_IOV */ void ixgbe_write_pci_cfg_word(struct ixgbe_hw *hw, u32 reg, u16 value) { struct ixgbe_adapter *adapter = hw->back; if (ixgbe_removed(hw->hw_addr)) return; pci_write_config_word(adapter->pdev, reg, value); } static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter) { BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state)); /* flush memory to make sure state is correct before next watchdog */ smp_mb__before_atomic(); clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); } struct ixgbe_reg_info { u32 ofs; char *name; }; static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = { /* General Registers */ {IXGBE_CTRL, "CTRL"}, {IXGBE_STATUS, "STATUS"}, {IXGBE_CTRL_EXT, "CTRL_EXT"}, /* Interrupt Registers */ {IXGBE_EICR, "EICR"}, /* RX Registers */ {IXGBE_SRRCTL(0), "SRRCTL"}, {IXGBE_DCA_RXCTRL(0), "DRXCTL"}, {IXGBE_RDLEN(0), "RDLEN"}, {IXGBE_RDH(0), "RDH"}, {IXGBE_RDT(0), "RDT"}, {IXGBE_RXDCTL(0), "RXDCTL"}, {IXGBE_RDBAL(0), "RDBAL"}, {IXGBE_RDBAH(0), "RDBAH"}, /* TX Registers */ {IXGBE_TDBAL(0), "TDBAL"}, {IXGBE_TDBAH(0), "TDBAH"}, {IXGBE_TDLEN(0), "TDLEN"}, {IXGBE_TDH(0), "TDH"}, {IXGBE_TDT(0), "TDT"}, {IXGBE_TXDCTL(0), "TXDCTL"}, /* List Terminator */ { .name = NULL } }; /* * ixgbe_regdump - register printout routine */ static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo) { int i; char rname[16]; u32 regs[64]; switch (reginfo->ofs) { case IXGBE_SRRCTL(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i)); break; case IXGBE_DCA_RXCTRL(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i)); break; case IXGBE_RDLEN(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i)); break; case IXGBE_RDH(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i)); break; case IXGBE_RDT(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i)); break; case IXGBE_RXDCTL(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); break; case IXGBE_RDBAL(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i)); break; case IXGBE_RDBAH(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i)); break; case IXGBE_TDBAL(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i)); break; case IXGBE_TDBAH(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i)); break; case IXGBE_TDLEN(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i)); break; case IXGBE_TDH(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i)); break; case IXGBE_TDT(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i)); break; case IXGBE_TXDCTL(0): for (i = 0; i < 64; i++) regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i)); break; default: pr_info("%-15s %08x\n", reginfo->name, IXGBE_READ_REG(hw, reginfo->ofs)); return; } i = 0; while (i < 64) { int j; char buf[9 * 8 + 1]; char *p = buf; snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i, i + 7); for (j = 0; j < 8; j++) p += sprintf(p, " %08x", regs[i++]); pr_err("%-15s%s\n", rname, buf); } } static void ixgbe_print_buffer(struct ixgbe_ring *ring, int n) { struct ixgbe_tx_buffer *tx_buffer; tx_buffer = &ring->tx_buffer_info[ring->next_to_clean]; pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n", n, ring->next_to_use, ring->next_to_clean, (u64)dma_unmap_addr(tx_buffer, dma), dma_unmap_len(tx_buffer, len), tx_buffer->next_to_watch, (u64)tx_buffer->time_stamp); } /* * ixgbe_dump - Print registers, tx-rings and rx-rings */ static void ixgbe_dump(struct ixgbe_adapter *adapter) { struct net_device *netdev = adapter->netdev; struct ixgbe_hw *hw = &adapter->hw; struct ixgbe_reg_info *reginfo; int n = 0; struct ixgbe_ring *ring; struct ixgbe_tx_buffer *tx_buffer; union ixgbe_adv_tx_desc *tx_desc; struct my_u0 { u64 a; u64 b; } *u0; struct ixgbe_ring *rx_ring; union ixgbe_adv_rx_desc *rx_desc; struct ixgbe_rx_buffer *rx_buffer_info; int i = 0; if (!netif_msg_hw(adapter)) return; /* Print netdevice Info */ if (netdev) { dev_info(&adapter->pdev->dev, "Net device Info\n"); pr_info("Device Name state " "trans_start\n"); pr_info("%-15s %016lX %016lX\n", netdev->name, netdev->state, dev_trans_start(netdev)); } /* Print Registers */ dev_info(&adapter->pdev->dev, "Register Dump\n"); pr_info(" Register Name Value\n"); for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl; reginfo->name; reginfo++) { ixgbe_regdump(hw, reginfo); } /* Print TX Ring Summary */ if (!netdev || !netif_running(netdev)) return; dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); pr_info(" %s %s %s %s\n", "Queue [NTU] [NTC] [bi(ntc)->dma ]", "leng", "ntw", "timestamp"); for (n = 0; n < adapter->num_tx_queues; n++) { ring = adapter->tx_ring[n]; ixgbe_print_buffer(ring, n); } for (n = 0; n < adapter->num_xdp_queues; n++) { ring = adapter->xdp_ring[n]; ixgbe_print_buffer(ring, n); } /* Print TX Rings */ if (!netif_msg_tx_done(adapter)) goto rx_ring_summary; dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); /* Transmit Descriptor Formats * * 82598 Advanced Transmit Descriptor * +--------------------------------------------------------------+ * 0 | Buffer Address [63:0] | * +--------------------------------------------------------------+ * 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN | * +--------------------------------------------------------------+ * 63 46 45 40 39 36 35 32 31 24 23 20 19 0 * * 82598 Advanced Transmit Descriptor (Write-Back Format) * +--------------------------------------------------------------+ * 0 | RSV [63:0] | * +--------------------------------------------------------------+ * 8 | RSV | STA | NXTSEQ | * +--------------------------------------------------------------+ * 63 36 35 32 31 0 * * 82599+ Advanced Transmit Descriptor * +--------------------------------------------------------------+ * 0 | Buffer Address [63:0] | * +--------------------------------------------------------------+ * 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN | * +--------------------------------------------------------------+ * 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0 * * 82599+ Advanced Transmit Descriptor (Write-Back Format) * +--------------------------------------------------------------+ * 0 | RSV [63:0] | * +--------------------------------------------------------------+ * 8 | RSV | STA | RSV | * +--------------------------------------------------------------+ * 63 36 35 32 31 0 */ for (n = 0; n < adapter->num_tx_queues; n++) { ring = adapter->tx_ring[n]; pr_info("------------------------------------\n"); pr_info("TX QUEUE INDEX = %d\n", ring->queue_index); pr_info("------------------------------------\n"); pr_info("%s%s %s %s %s %s\n", "T [desc] [address 63:0 ] ", "[PlPOIdStDDt Ln] [bi->dma ] ", "leng", "ntw", "timestamp", "bi->skb"); for (i = 0; ring->desc && (i < ring->count); i++) { tx_desc = IXGBE_TX_DESC(ring, i); tx_buffer = &ring->tx_buffer_info[i]; u0 = (struct my_u0 *)tx_desc; if (dma_unmap_len(tx_buffer, len) > 0) { const char *ring_desc; if (i == ring->next_to_use && i == ring->next_to_clean) ring_desc = " NTC/U"; else if (i == ring->next_to_use) ring_desc = " NTU"; else if (i == ring->next_to_clean) ring_desc = " NTC"; else ring_desc = ""; pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p%s", i, le64_to_cpu((__force __le64)u0->a), le64_to_cpu((__force __le64)u0->b), (u64)dma_unmap_addr(tx_buffer, dma), dma_unmap_len(tx_buffer, len), tx_buffer->next_to_watch, (u64)tx_buffer->time_stamp, tx_buffer->skb, ring_desc); if (netif_msg_pktdata(adapter) && tx_buffer->skb) print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, 16, 1, tx_buffer->skb->data, dma_unmap_len(tx_buffer, len), true); } } } /* Print RX Rings Summary */ rx_ring_summary: dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); pr_info("Queue [NTU] [NTC]\n"); for (n = 0; n < adapter->num_rx_queues; n++) { rx_ring = adapter->rx_ring[n]; pr_info("%5d %5X %5X\n", n, rx_ring->next_to_use, rx_ring->next_to_clean); } /* Print RX Rings */ if (!netif_msg_rx_status(adapter)) return; dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); /* Receive Descriptor Formats * * 82598 Advanced Receive Descriptor (Read) Format * 63 1 0 * +-----------------------------------------------------+ * 0 | Packet Buffer Address [63:1] |A0/NSE| * +----------------------------------------------+------+ * 8 | Header Buffer Address [63:1] | DD | * +-----------------------------------------------------+ * * * 82598 Advanced Receive Descriptor (Write-Back) Format * * 63 48 47 32 31 30 21 20 16 15 4 3 0 * +------------------------------------------------------+ * 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS | * | Packet | IP | | | | Type | Type | * | Checksum | Ident | | | | | | * +------------------------------------------------------+ * 8 | VLAN Tag | Length | Extended Error | Extended Status | * +------------------------------------------------------+ * 63 48 47 32 31 20 19 0 * * 82599+ Advanced Receive Descriptor (Read) Format * 63 1 0 * +-----------------------------------------------------+ * 0 | Packet Buffer Address [63:1] |A0/NSE| * +----------------------------------------------+------+ * 8 | Header Buffer Address [63:1] | DD | * +-----------------------------------------------------+ * * * 82599+ Advanced Receive Descriptor (Write-Back) Format * * 63 48 47 32 31 30 21 20 17 16 4 3 0 * +------------------------------------------------------+ * 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS | * |/ RTT / PCoE_PARAM | | | CNT | Type | Type | * |/ Flow Dir Flt ID | | | | | | * +------------------------------------------------------+ * 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP | * +------------------------------------------------------+ * 63 48 47 32 31 20 19 0 */ for (n = 0; n < adapter->num_rx_queues; n++) { rx_ring = adapter->rx_ring[n]; pr_info("------------------------------------\n"); pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index); pr_info("------------------------------------\n"); pr_info("%s%s%s\n", "R [desc] [ PktBuf A0] ", "[ HeadBuf DD] [bi->dma ] [bi->skb ] ", "<-- Adv Rx Read format"); pr_info("%s%s%s\n", "RWB[desc] [PcsmIpSHl PtRs] ", "[vl er S cks ln] ---------------- [bi->skb ] ", "<-- Adv Rx Write-Back format"); for (i = 0; i < rx_ring->count; i++) { const char *ring_desc; if (i == rx_ring->next_to_use) ring_desc = " NTU"; else if (i == rx_ring->next_to_clean) ring_desc = " NTC"; else ring_desc = ""; rx_buffer_info = &rx_ring->rx_buffer_info[i]; rx_desc = IXGBE_RX_DESC(rx_ring, i); u0 = (struct my_u0 *)rx_desc; if (rx_desc->wb.upper.length) { /* Descriptor Done */ pr_info("RWB[0x%03X] %016llX %016llX ---------------- %p%s\n", i, le64_to_cpu((__force __le64)u0->a), le64_to_cpu((__force __le64)u0->b), rx_buffer_info->skb, ring_desc); } else { pr_info("R [0x%03X] %016llX %016llX %016llX %p%s\n", i, le64_to_cpu((__force __le64)u0->a), le64_to_cpu((__force __le64)u0->b), (u64)rx_buffer_info->dma, rx_buffer_info->skb, ring_desc); if (netif_msg_pktdata(adapter) && rx_buffer_info->dma) { print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, 16, 1, page_address(rx_buffer_info->page) + rx_buffer_info->page_offset, ixgbe_rx_bufsz(rx_ring), true); } } } } } static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) { u32 ctrl_ext; /* Let firmware take over control of h/w */ ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); } static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) { u32 ctrl_ext; /* Let firmware know the driver has taken over */ ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); } /** * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors * @adapter: pointer to adapter struct * @direction: 0 for Rx, 1 for Tx, -1 for other causes * @queue: queue to map the corresponding interrupt to * @msix_vector: the vector to map to the corresponding queue * */ static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction, u8 queue, u8 msix_vector) { u32 ivar, index; struct ixgbe_hw *hw = &adapter->hw; switch (hw->mac.type) { case ixgbe_mac_82598EB: msix_vector |= IXGBE_IVAR_ALLOC_VAL; if (direction == -1) direction = 0; index = (((direction * 64) + queue) >> 2) & 0x1F; ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index)); ivar &= ~(0xFF << (8 * (queue & 0x3))); ivar |= (msix_vector << (8 * (queue & 0x3))); IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: if (direction == -1) { /* other causes */ msix_vector |= IXGBE_IVAR_ALLOC_VAL; index = ((queue & 1) * 8); ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC); ivar &= ~(0xFF << index); ivar |= (msix_vector << index); IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar); break; } else { /* tx or rx causes */ msix_vector |= IXGBE_IVAR_ALLOC_VAL; index = ((16 * (queue & 1)) + (8 * direction)); ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1)); ivar &= ~(0xFF << index); ivar |= (msix_vector << index); IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar); break; } default: break; } } void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter, u64 qmask) { u32 mask; switch (adapter->hw.mac.type) { case ixgbe_mac_82598EB: mask = (IXGBE_EIMS_RTX_QUEUE & qmask); IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: mask = (qmask & 0xFFFFFFFF); IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask); mask = (qmask >> 32); IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask); break; default: break; } } static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; struct ixgbe_hw_stats *hwstats = &adapter->stats; int i; u32 data; if ((hw->fc.current_mode != ixgbe_fc_full) && (hw->fc.current_mode != ixgbe_fc_rx_pause)) return; switch (hw->mac.type) { case ixgbe_mac_82598EB: data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); break; default: data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); } hwstats->lxoffrxc += data; /* refill credits (no tx hang) if we received xoff */ if (!data) return; for (i = 0; i < adapter->num_tx_queues; i++) clear_bit(__IXGBE_HANG_CHECK_ARMED, &adapter->tx_ring[i]->state); for (i = 0; i < adapter->num_xdp_queues; i++) clear_bit(__IXGBE_HANG_CHECK_ARMED, &adapter->xdp_ring[i]->state); } static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; struct ixgbe_hw_stats *hwstats = &adapter->stats; u32 xoff[8] = {0}; u8 tc; int i; bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; if (adapter->ixgbe_ieee_pfc) pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED) || !pfc_en) { ixgbe_update_xoff_rx_lfc(adapter); return; } /* update stats for each tc, only valid with PFC enabled */ for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) { u32 pxoffrxc; switch (hw->mac.type) { case ixgbe_mac_82598EB: pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); break; default: pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i)); } hwstats->pxoffrxc[i] += pxoffrxc; /* Get the TC for given UP */ tc = netdev_get_prio_tc_map(adapter->netdev, i); xoff[tc] += pxoffrxc; } /* disarm tx queues that have received xoff frames */ for (i = 0; i < adapter->num_tx_queues; i++) { struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; tc = tx_ring->dcb_tc; if (xoff[tc]) clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); } for (i = 0; i < adapter->num_xdp_queues; i++) { struct ixgbe_ring *xdp_ring = adapter->xdp_ring[i]; tc = xdp_ring->dcb_tc; if (xoff[tc]) clear_bit(__IXGBE_HANG_CHECK_ARMED, &xdp_ring->state); } } static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring) { return ring->stats.packets; } static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring) { unsigned int head, tail; head = ring->next_to_clean; tail = ring->next_to_use; return ((head <= tail) ? tail : tail + ring->count) - head; } static inline bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring) { u32 tx_done = ixgbe_get_tx_completed(tx_ring); u32 tx_done_old = tx_ring->tx_stats.tx_done_old; u32 tx_pending = ixgbe_get_tx_pending(tx_ring); clear_check_for_tx_hang(tx_ring); /* * Check for a hung queue, but be thorough. This verifies * that a transmit has been completed since the previous * check AND there is at least one packet pending. The * ARMED bit is set to indicate a potential hang. The * bit is cleared if a pause frame is received to remove * false hang detection due to PFC or 802.3x frames. By * requiring this to fail twice we avoid races with * pfc clearing the ARMED bit and conditions where we * run the check_tx_hang logic with a transmit completion * pending but without time to complete it yet. */ if (tx_done_old == tx_done && tx_pending) /* make sure it is true for two checks in a row */ return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); /* update completed stats and continue */ tx_ring->tx_stats.tx_done_old = tx_done; /* reset the countdown */ clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); return false; } /** * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout * @adapter: driver private struct **/ static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter) { /* Do the reset outside of interrupt context */ if (!test_bit(__IXGBE_DOWN, &adapter->state)) { set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); e_warn(drv, "initiating reset due to tx timeout\n"); ixgbe_service_event_schedule(adapter); } } /** * ixgbe_tx_maxrate - callback to set the maximum per-queue bitrate * @netdev: network interface device structure * @queue_index: Tx queue to set * @maxrate: desired maximum transmit bitrate **/ static int ixgbe_tx_maxrate(struct net_device *netdev, int queue_index, u32 maxrate) { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_hw *hw = &adapter->hw; u32 bcnrc_val = ixgbe_link_mbps(adapter); if (!maxrate) return 0; /* Calculate the rate factor values to set */ bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; bcnrc_val /= maxrate; /* clear everything but the rate factor */ bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | IXGBE_RTTBCNRC_RF_DEC_MASK; /* enable the rate scheduler */ bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, queue_index); IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); return 0; } /** * ixgbe_clean_tx_irq - Reclaim resources after transmit completes * @q_vector: structure containing interrupt and ring information * @tx_ring: tx ring to clean * @napi_budget: Used to determine if we are in netpoll **/ static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector, struct ixgbe_ring *tx_ring, int napi_budget) { struct ixgbe_adapter *adapter = q_vector->adapter; struct ixgbe_tx_buffer *tx_buffer; union ixgbe_adv_tx_desc *tx_desc; unsigned int total_bytes = 0, total_packets = 0, total_ipsec = 0; unsigned int budget = q_vector->tx.work_limit; unsigned int i = tx_ring->next_to_clean; if (test_bit(__IXGBE_DOWN, &adapter->state)) return true; tx_buffer = &tx_ring->tx_buffer_info[i]; tx_desc = IXGBE_TX_DESC(tx_ring, i); i -= tx_ring->count; do { union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; /* if next_to_watch is not set then there is no work pending */ if (!eop_desc) break; /* prevent any other reads prior to eop_desc */ smp_rmb(); /* if DD is not set pending work has not been completed */ if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD))) break; /* clear next_to_watch to prevent false hangs */ tx_buffer->next_to_watch = NULL; /* update the statistics for this packet */ total_bytes += tx_buffer->bytecount; total_packets += tx_buffer->gso_segs; if (tx_buffer->tx_flags & IXGBE_TX_FLAGS_IPSEC) total_ipsec++; /* free the skb */ if (ring_is_xdp(tx_ring)) xdp_return_frame(tx_buffer->xdpf); else napi_consume_skb(tx_buffer->skb, napi_budget); /* unmap skb header data */ dma_unmap_single(tx_ring->dev, dma_unmap_addr(tx_buffer, dma), dma_unmap_len(tx_buffer, len), DMA_TO_DEVICE); /* clear tx_buffer data */ dma_unmap_len_set(tx_buffer, len, 0); /* unmap remaining buffers */ while (tx_desc != eop_desc) { tx_buffer++; tx_desc++; i++; if (unlikely(!i)) { i -= tx_ring->count; tx_buffer = tx_ring->tx_buffer_info; tx_desc = IXGBE_TX_DESC(tx_ring, 0); } /* unmap any remaining paged data */ if (dma_unmap_len(tx_buffer, len)) { dma_unmap_page(tx_ring->dev, dma_unmap_addr(tx_buffer, dma), dma_unmap_len(tx_buffer, len), DMA_TO_DEVICE); dma_unmap_len_set(tx_buffer, len, 0); } } /* move us one more past the eop_desc for start of next pkt */ tx_buffer++; tx_desc++; i++; if (unlikely(!i)) { i -= tx_ring->count; tx_buffer = tx_ring->tx_buffer_info; tx_desc = IXGBE_TX_DESC(tx_ring, 0); } /* issue prefetch for next Tx descriptor */ prefetch(tx_desc); /* update budget accounting */ budget--; } while (likely(budget)); i += tx_ring->count; tx_ring->next_to_clean = i; u64_stats_update_begin(&tx_ring->syncp); tx_ring->stats.bytes += total_bytes; tx_ring->stats.packets += total_packets; u64_stats_update_end(&tx_ring->syncp); q_vector->tx.total_bytes += total_bytes; q_vector->tx.total_packets += total_packets; adapter->tx_ipsec += total_ipsec; if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) { /* schedule immediate reset if we believe we hung */ struct ixgbe_hw *hw = &adapter->hw; e_err(drv, "Detected Tx Unit Hang %s\n" " Tx Queue <%d>\n" " TDH, TDT <%x>, <%x>\n" " next_to_use <%x>\n" " next_to_clean <%x>\n" "tx_buffer_info[next_to_clean]\n" " time_stamp <%lx>\n" " jiffies <%lx>\n", ring_is_xdp(tx_ring) ? "(XDP)" : "", tx_ring->queue_index, IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)), IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)), tx_ring->next_to_use, i, tx_ring->tx_buffer_info[i].time_stamp, jiffies); if (!ring_is_xdp(tx_ring)) netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index); e_info(probe, "tx hang %d detected on queue %d, resetting adapter\n", adapter->tx_timeout_count + 1, tx_ring->queue_index); /* schedule immediate reset if we believe we hung */ ixgbe_tx_timeout_reset(adapter); /* the adapter is about to reset, no point in enabling stuff */ return true; } if (ring_is_xdp(tx_ring)) return !!budget; netdev_tx_completed_queue(txring_txq(tx_ring), total_packets, total_bytes); #define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) if (unlikely(total_packets && netif_carrier_ok(tx_ring->netdev) && (ixgbe_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD))) { /* Make sure that anybody stopping the queue after this * sees the new next_to_clean. */ smp_mb(); if (__netif_subqueue_stopped(tx_ring->netdev, tx_ring->queue_index) && !test_bit(__IXGBE_DOWN, &adapter->state)) { netif_wake_subqueue(tx_ring->netdev, tx_ring->queue_index); ++tx_ring->tx_stats.restart_queue; } } return !!budget; } #ifdef CONFIG_IXGBE_DCA static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, struct ixgbe_ring *tx_ring, int cpu) { struct ixgbe_hw *hw = &adapter->hw; u32 txctrl = 0; u16 reg_offset; if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) txctrl = dca3_get_tag(tx_ring->dev, cpu); switch (hw->mac.type) { case ixgbe_mac_82598EB: reg_offset = IXGBE_DCA_TXCTRL(tx_ring->reg_idx); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: reg_offset = IXGBE_DCA_TXCTRL_82599(tx_ring->reg_idx); txctrl <<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599; break; default: /* for unknown hardware do not write register */ return; } /* * We can enable relaxed ordering for reads, but not writes when * DCA is enabled. This is due to a known issue in some chipsets * which will cause the DCA tag to be cleared. */ txctrl |= IXGBE_DCA_TXCTRL_DESC_RRO_EN | IXGBE_DCA_TXCTRL_DATA_RRO_EN | IXGBE_DCA_TXCTRL_DESC_DCA_EN; IXGBE_WRITE_REG(hw, reg_offset, txctrl); } static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter, struct ixgbe_ring *rx_ring, int cpu) { struct ixgbe_hw *hw = &adapter->hw; u32 rxctrl = 0; u8 reg_idx = rx_ring->reg_idx; if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) rxctrl = dca3_get_tag(rx_ring->dev, cpu); switch (hw->mac.type) { case ixgbe_mac_82599EB: case ixgbe_mac_X540: rxctrl <<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599; break; default: break; } /* * We can enable relaxed ordering for reads, but not writes when * DCA is enabled. This is due to a known issue in some chipsets * which will cause the DCA tag to be cleared. */ rxctrl |= IXGBE_DCA_RXCTRL_DESC_RRO_EN | IXGBE_DCA_RXCTRL_DATA_DCA_EN | IXGBE_DCA_RXCTRL_DESC_DCA_EN; IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl); } static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector) { struct ixgbe_adapter *adapter = q_vector->adapter; struct ixgbe_ring *ring; int cpu = get_cpu(); if (q_vector->cpu == cpu) goto out_no_update; ixgbe_for_each_ring(ring, q_vector->tx) ixgbe_update_tx_dca(adapter, ring, cpu); ixgbe_for_each_ring(ring, q_vector->rx) ixgbe_update_rx_dca(adapter, ring, cpu); q_vector->cpu = cpu; out_no_update: put_cpu(); } static void ixgbe_setup_dca(struct ixgbe_adapter *adapter) { int i; /* always use CB2 mode, difference is masked in the CB driver */ if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, IXGBE_DCA_CTRL_DCA_MODE_CB2); else IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, IXGBE_DCA_CTRL_DCA_DISABLE); for (i = 0; i < adapter->num_q_vectors; i++) { adapter->q_vector[i]->cpu = -1; ixgbe_update_dca(adapter->q_vector[i]); } } static int __ixgbe_notify_dca(struct device *dev, void *data) { struct ixgbe_adapter *adapter = dev_get_drvdata(dev); unsigned long event = *(unsigned long *)data; if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE)) return 0; switch (event) { case DCA_PROVIDER_ADD: /* if we're already enabled, don't do it again */ if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) break; if (dca_add_requester(dev) == 0) { adapter->flags |= IXGBE_FLAG_DCA_ENABLED; IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, IXGBE_DCA_CTRL_DCA_MODE_CB2); break; } /* fall through - DCA is disabled. */ case DCA_PROVIDER_REMOVE: if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { dca_remove_requester(dev); adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, IXGBE_DCA_CTRL_DCA_DISABLE); } break; } return 0; } #endif /* CONFIG_IXGBE_DCA */ #define IXGBE_RSS_L4_TYPES_MASK \ ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \ (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \ (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \ (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP)) static inline void ixgbe_rx_hash(struct ixgbe_ring *ring, union ixgbe_adv_rx_desc *rx_desc, struct sk_buff *skb) { u16 rss_type; if (!(ring->netdev->features & NETIF_F_RXHASH)) return; rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) & IXGBE_RXDADV_RSSTYPE_MASK; if (!rss_type) return; skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), (IXGBE_RSS_L4_TYPES_MASK & (1ul << rss_type)) ? PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3); } #ifdef IXGBE_FCOE /** * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type * @ring: structure containing ring specific data * @rx_desc: advanced rx descriptor * * Returns : true if it is FCoE pkt */ static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring *ring, union ixgbe_adv_rx_desc *rx_desc) { __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; return test_bit(__IXGBE_RX_FCOE, &ring->state) && ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) == (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE << IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT))); } #endif /* IXGBE_FCOE */ /** * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum * @ring: structure containing ring specific data * @rx_desc: current Rx descriptor being processed * @skb: skb currently being received and modified **/ static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring, union ixgbe_adv_rx_desc *rx_desc, struct sk_buff *skb) { __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; bool encap_pkt = false; skb_checksum_none_assert(skb); /* Rx csum disabled */ if (!(ring->netdev->features & NETIF_F_RXCSUM)) return; /* check for VXLAN and Geneve packets */ if (pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN)) { encap_pkt = true; skb->encapsulation = 1; } /* if IP and error */ if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) && ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) { ring->rx_stats.csum_err++; return; } if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS)) return; if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) { /* * 82599 errata, UDP frames with a 0 checksum can be marked as * checksum errors. */ if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP)) && test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state)) return; ring->rx_stats.csum_err++; return; } /* It must be a TCP or UDP packet with a valid checksum */ skb->ip_summed = CHECKSUM_UNNECESSARY; if (encap_pkt) { if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_OUTERIPCS)) return; if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_OUTERIPER)) { skb->ip_summed = CHECKSUM_NONE; return; } /* If we checked the outer header let the stack know */ skb->csum_level = 1; } } static inline unsigned int ixgbe_rx_offset(struct ixgbe_ring *rx_ring) { return ring_uses_build_skb(rx_ring) ? IXGBE_SKB_PAD : 0; } static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring, struct ixgbe_rx_buffer *bi) { struct page *page = bi->page; dma_addr_t dma; /* since we are recycling buffers we should seldom need to alloc */ if (likely(page)) return true; /* alloc new page for storage */ page = dev_alloc_pages(ixgbe_rx_pg_order(rx_ring)); if (unlikely(!page)) { rx_ring->rx_stats.alloc_rx_page_failed++; return false; } /* map page for use */ dma = dma_map_page_attrs(rx_ring->dev, page, 0, ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE, IXGBE_RX_DMA_ATTR); /* * if mapping failed free memory back to system since * there isn't much point in holding memory we can't use */ if (dma_mapping_error(rx_ring->dev, dma)) { __free_pages(page, ixgbe_rx_pg_order(rx_ring)); rx_ring->rx_stats.alloc_rx_page_failed++; return false; } bi->dma = dma; bi->page = page; bi->page_offset = ixgbe_rx_offset(rx_ring); page_ref_add(page, USHRT_MAX - 1); bi->pagecnt_bias = USHRT_MAX; rx_ring->rx_stats.alloc_rx_page++; return true; } /** * ixgbe_alloc_rx_buffers - Replace used receive buffers * @rx_ring: ring to place buffers on * @cleaned_count: number of buffers to replace **/ void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count) { union ixgbe_adv_rx_desc *rx_desc; struct ixgbe_rx_buffer *bi; u16 i = rx_ring->next_to_use; u16 bufsz; /* nothing to do */ if (!cleaned_count) return; rx_desc = IXGBE_RX_DESC(rx_ring, i); bi = &rx_ring->rx_buffer_info[i]; i -= rx_ring->count; bufsz = ixgbe_rx_bufsz(rx_ring); do { if (!ixgbe_alloc_mapped_page(rx_ring, bi)) break; /* sync the buffer for use by the device */ dma_sync_single_range_for_device(rx_ring->dev, bi->dma, bi->page_offset, bufsz, DMA_FROM_DEVICE); /* * Refresh the desc even if buffer_addrs didn't change * because each write-back erases this info. */ rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); rx_desc++; bi++; i++; if (unlikely(!i)) { rx_desc = IXGBE_RX_DESC(rx_ring, 0); bi = rx_ring->rx_buffer_info; i -= rx_ring->count; } /* clear the length for the next_to_use descriptor */ rx_desc->wb.upper.length = 0; cleaned_count--; } while (cleaned_count); i += rx_ring->count; if (rx_ring->next_to_use != i) { rx_ring->next_to_use = i; /* update next to alloc since we have filled the ring */ rx_ring->next_to_alloc = i; /* Force memory writes to complete before letting h/w * know there are new descriptors to fetch. (Only * applicable for weak-ordered memory model archs, * such as IA-64). */ wmb(); writel(i, rx_ring->tail); } } static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring, struct sk_buff *skb) { u16 hdr_len = skb_headlen(skb); /* set gso_size to avoid messing up TCP MSS */ skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len), IXGBE_CB(skb)->append_cnt); skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; } static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring, struct sk_buff *skb) { /* if append_cnt is 0 then frame is not RSC */ if (!IXGBE_CB(skb)->append_cnt) return; rx_ring->rx_stats.rsc_count += IXGBE_CB(skb)->append_cnt; rx_ring->rx_stats.rsc_flush++; ixgbe_set_rsc_gso_size(rx_ring, skb); /* gso_size is computed using append_cnt so always clear it last */ IXGBE_CB(skb)->append_cnt = 0; } /** * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor * @rx_ring: rx descriptor ring packet is being transacted on * @rx_desc: pointer to the EOP Rx descriptor * @skb: pointer to current skb being populated * * This function checks the ring, descriptor, and packet information in * order to populate the hash, checksum, VLAN, timestamp, protocol, and * other fields within the skb. **/ void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring, union ixgbe_adv_rx_desc *rx_desc, struct sk_buff *skb) { struct net_device *dev = rx_ring->netdev; u32 flags = rx_ring->q_vector->adapter->flags; ixgbe_update_rsc_stats(rx_ring, skb); ixgbe_rx_hash(rx_ring, rx_desc, skb); ixgbe_rx_checksum(rx_ring, rx_desc, skb); if (unlikely(flags & IXGBE_FLAG_RX_HWTSTAMP_ENABLED)) ixgbe_ptp_rx_hwtstamp(rx_ring, rx_desc, skb); if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) { u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan); __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); } if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_STAT_SECP)) ixgbe_ipsec_rx(rx_ring, rx_desc, skb); /* record Rx queue, or update MACVLAN statistics */ if (netif_is_ixgbe(dev)) skb_record_rx_queue(skb, rx_ring->queue_index); else macvlan_count_rx(netdev_priv(dev), skb->len + ETH_HLEN, true, false); skb->protocol = eth_type_trans(skb, dev); } void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector, struct sk_buff *skb) { napi_gro_receive(&q_vector->napi, skb); } /** * ixgbe_is_non_eop - process handling of non-EOP buffers * @rx_ring: Rx ring being processed * @rx_desc: Rx descriptor for current buffer * @skb: Current socket buffer containing buffer in progress * * This function updates next to clean. If the buffer is an EOP buffer * this function exits returning false, otherwise it will place the * sk_buff in the next buffer to be chained and return true indicating * that this is in fact a non-EOP buffer. **/ static bool ixgbe_is_non_eop(struct ixgbe_ring *rx_ring, union ixgbe_adv_rx_desc *rx_desc, struct sk_buff *skb) { u32 ntc = rx_ring->next_to_clean + 1; /* fetch, update, and store next to clean */ ntc = (ntc < rx_ring->count) ? ntc : 0; rx_ring->next_to_clean = ntc; prefetch(IXGBE_RX_DESC(rx_ring, ntc)); /* update RSC append count if present */ if (ring_is_rsc_enabled(rx_ring)) { __le32 rsc_enabled = rx_desc->wb.lower.lo_dword.data & cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK); if (unlikely(rsc_enabled)) { u32 rsc_cnt = le32_to_cpu(rsc_enabled); rsc_cnt >>= IXGBE_RXDADV_RSCCNT_SHIFT; IXGBE_CB(skb)->append_cnt += rsc_cnt - 1; /* update ntc based on RSC value */ ntc = le32_to_cpu(rx_desc->wb.upper.status_error); ntc &= IXGBE_RXDADV_NEXTP_MASK; ntc >>= IXGBE_RXDADV_NEXTP_SHIFT; } } /* if we are the last buffer then there is nothing else to do */ if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))) return false; /* place skb in next buffer to be received */ rx_ring->rx_buffer_info[ntc].skb = skb; rx_ring->rx_stats.non_eop_descs++; return true; } /** * ixgbe_pull_tail - ixgbe specific version of skb_pull_tail * @rx_ring: rx descriptor ring packet is being transacted on * @skb: pointer to current skb being adjusted * * This function is an ixgbe specific version of __pskb_pull_tail. The * main difference between this version and the original function is that * this function can make several assumptions about the state of things * that allow for significant optimizations versus the standard function. * As a result we can do things like drop a frag and maintain an accurate * truesize for the skb. */ static void ixgbe_pull_tail(struct ixgbe_ring *rx_ring, struct sk_buff *skb) { struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0]; unsigned char *va; unsigned int pull_len; /* * it is valid to use page_address instead of kmap since we are * working with pages allocated out of the lomem pool per * alloc_page(GFP_ATOMIC) */ va = skb_frag_address(frag); /* * we need the header to contain the greater of either ETH_HLEN or * 60 bytes if the skb->len is less than 60 for skb_pad. */ pull_len = eth_get_headlen(va, IXGBE_RX_HDR_SIZE); /* align pull length to size of long to optimize memcpy performance */ skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long))); /* update all of the pointers */ skb_frag_size_sub(frag, pull_len); frag->page_offset += pull_len; skb->data_len -= pull_len; skb->tail += pull_len; } /** * ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB * @rx_ring: rx descriptor ring packet is being transacted on * @skb: pointer to current skb being updated * * This function provides a basic DMA sync up for the first fragment of an * skb. The reason for doing this is that the first fragment cannot be * unmapped until we have reached the end of packet descriptor for a buffer * chain. */ static void ixgbe_dma_sync_frag(struct ixgbe_ring *rx_ring, struct sk_buff *skb) { /* if the page was released unmap it, else just sync our portion */ if (unlikely(IXGBE_CB(skb)->page_released)) { dma_unmap_page_attrs(rx_ring->dev, IXGBE_CB(skb)->dma, ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE, IXGBE_RX_DMA_ATTR); } else if (ring_uses_build_skb(rx_ring)) { unsigned long offset = (unsigned long)(skb->data) & ~PAGE_MASK; dma_sync_single_range_for_cpu(rx_ring->dev, IXGBE_CB(skb)->dma, offset, skb_headlen(skb), DMA_FROM_DEVICE); } else { struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[0]; dma_sync_single_range_for_cpu(rx_ring->dev, IXGBE_CB(skb)->dma, frag->page_offset, skb_frag_size(frag), DMA_FROM_DEVICE); } } /** * ixgbe_cleanup_headers - Correct corrupted or empty headers * @rx_ring: rx descriptor ring packet is being transacted on * @rx_desc: pointer to the EOP Rx descriptor * @skb: pointer to current skb being fixed * * Check if the skb is valid in the XDP case it will be an error pointer. * Return true in this case to abort processing and advance to next * descriptor. * * Check for corrupted packet headers caused by senders on the local L2 * embedded NIC switch not setting up their Tx Descriptors right. These * should be very rare. * * Also address the case where we are pulling data in on pages only * and as such no data is present in the skb header. * * In addition if skb is not at least 60 bytes we need to pad it so that * it is large enough to qualify as a valid Ethernet frame. * * Returns true if an error was encountered and skb was freed. **/ bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring, union ixgbe_adv_rx_desc *rx_desc, struct sk_buff *skb) { struct net_device *netdev = rx_ring->netdev; /* XDP packets use error pointer so abort at this point */ if (IS_ERR(skb)) return true; /* Verify netdev is present, and that packet does not have any * errors that would be unacceptable to the netdev. */ if (!netdev || (unlikely(ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_FRAME_ERR_MASK) && !(netdev->features & NETIF_F_RXALL)))) { dev_kfree_skb_any(skb); return true; } /* place header in linear portion of buffer */ if (!skb_headlen(skb)) ixgbe_pull_tail(rx_ring, skb); #ifdef IXGBE_FCOE /* do not attempt to pad FCoE Frames as this will disrupt DDP */ if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) return false; #endif /* if eth_skb_pad returns an error the skb was freed */ if (eth_skb_pad(skb)) return true; return false; } /** * ixgbe_reuse_rx_page - page flip buffer and store it back on the ring * @rx_ring: rx descriptor ring to store buffers on * @old_buff: donor buffer to have page reused * * Synchronizes page for reuse by the adapter **/ static void ixgbe_reuse_rx_page(struct ixgbe_ring *rx_ring, struct ixgbe_rx_buffer *old_buff) { struct ixgbe_rx_buffer *new_buff; u16 nta = rx_ring->next_to_alloc; new_buff = &rx_ring->rx_buffer_info[nta]; /* update, and store next to alloc */ nta++; rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; /* Transfer page from old buffer to new buffer. * Move each member individually to avoid possible store * forwarding stalls and unnecessary copy of skb. */ new_buff->dma = old_buff->dma; new_buff->page = old_buff->page; new_buff->page_offset = old_buff->page_offset; new_buff->pagecnt_bias = old_buff->pagecnt_bias; } static inline bool ixgbe_page_is_reserved(struct page *page) { return (page_to_nid(page) != numa_mem_id()) || page_is_pfmemalloc(page); } static bool ixgbe_can_reuse_rx_page(struct ixgbe_rx_buffer *rx_buffer) { unsigned int pagecnt_bias = rx_buffer->pagecnt_bias; struct page *page = rx_buffer->page; /* avoid re-using remote pages */ if (unlikely(ixgbe_page_is_reserved(page))) return false; #if (PAGE_SIZE < 8192) /* if we are only owner of page we can reuse it */ if (unlikely((page_ref_count(page) - pagecnt_bias) > 1)) return false; #else /* The last offset is a bit aggressive in that we assume the * worst case of FCoE being enabled and using a 3K buffer. * However this should have minimal impact as the 1K extra is * still less than one buffer in size. */ #define IXGBE_LAST_OFFSET \ (SKB_WITH_OVERHEAD(PAGE_SIZE) - IXGBE_RXBUFFER_3K) if (rx_buffer->page_offset > IXGBE_LAST_OFFSET) return false; #endif /* If we have drained the page fragment pool we need to update * the pagecnt_bias and page count so that we fully restock the * number of references the driver holds. */ if (unlikely(pagecnt_bias == 1)) { page_ref_add(page, USHRT_MAX - 1); rx_buffer->pagecnt_bias = USHRT_MAX; } return true; } /** * ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff * @rx_ring: rx descriptor ring to transact packets on * @rx_buffer: buffer containing page to add * @skb: sk_buff to place the data into * @size: size of data in rx_buffer * * This function will add the data contained in rx_buffer->page to the skb. * This is done either through a direct copy if the data in the buffer is * less than the skb header size, otherwise it will just attach the page as * a frag to the skb. * * The function will then update the page offset if necessary and return * true if the buffer can be reused by the adapter. **/ static void ixgbe_add_rx_frag(struct ixgbe_ring *rx_ring, struct ixgbe_rx_buffer *rx_buffer, struct sk_buff *skb, unsigned int size) { #if (PAGE_SIZE < 8192) unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; #else unsigned int truesize = ring_uses_build_skb(rx_ring) ? SKB_DATA_ALIGN(IXGBE_SKB_PAD + size) : SKB_DATA_ALIGN(size); #endif skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buffer->page, rx_buffer->page_offset, size, truesize); #if (PAGE_SIZE < 8192) rx_buffer->page_offset ^= truesize; #else rx_buffer->page_offset += truesize; #endif } static struct ixgbe_rx_buffer *ixgbe_get_rx_buffer(struct ixgbe_ring *rx_ring, union ixgbe_adv_rx_desc *rx_desc, struct sk_buff **skb, const unsigned int size) { struct ixgbe_rx_buffer *rx_buffer; rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; prefetchw(rx_buffer->page); *skb = rx_buffer->skb; /* Delay unmapping of the first packet. It carries the header * information, HW may still access the header after the writeback. * Only unmap it when EOP is reached */ if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) { if (!*skb) goto skip_sync; } else { if (*skb) ixgbe_dma_sync_frag(rx_ring, *skb); } /* we are reusing so sync this buffer for CPU use */ dma_sync_single_range_for_cpu(rx_ring->dev, rx_buffer->dma, rx_buffer->page_offset, size, DMA_FROM_DEVICE); skip_sync: rx_buffer->pagecnt_bias--; return rx_buffer; } static void ixgbe_put_rx_buffer(struct ixgbe_ring *rx_ring, struct ixgbe_rx_buffer *rx_buffer, struct sk_buff *skb) { if (ixgbe_can_reuse_rx_page(rx_buffer)) { /* hand second half of page back to the ring */ ixgbe_reuse_rx_page(rx_ring, rx_buffer); } else { if (!IS_ERR(skb) && IXGBE_CB(skb)->dma == rx_buffer->dma) { /* the page has been released from the ring */ IXGBE_CB(skb)->page_released = true; } else { /* we are not reusing the buffer so unmap it */ dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE, IXGBE_RX_DMA_ATTR); } __page_frag_cache_drain(rx_buffer->page, rx_buffer->pagecnt_bias); } /* clear contents of rx_buffer */ rx_buffer->page = NULL; rx_buffer->skb = NULL; } static struct sk_buff *ixgbe_construct_skb(struct ixgbe_ring *rx_ring, struct ixgbe_rx_buffer *rx_buffer, struct xdp_buff *xdp, union ixgbe_adv_rx_desc *rx_desc) { unsigned int size = xdp->data_end - xdp->data; #if (PAGE_SIZE < 8192) unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; #else unsigned int truesize = SKB_DATA_ALIGN(xdp->data_end - xdp->data_hard_start); #endif struct sk_buff *skb; /* prefetch first cache line of first page */ prefetch(xdp->data); #if L1_CACHE_BYTES < 128 prefetch(xdp->data + L1_CACHE_BYTES); #endif /* Note, we get here by enabling legacy-rx via: * * ethtool --set-priv-flags <dev> legacy-rx on * * In this mode, we currently get 0 extra XDP headroom as * opposed to having legacy-rx off, where we process XDP * packets going to stack via ixgbe_build_skb(). The latter * provides us currently with 192 bytes of headroom. * * For ixgbe_construct_skb() mode it means that the * xdp->data_meta will always point to xdp->data, since * the helper cannot expand the head. Should this ever * change in future for legacy-rx mode on, then lets also * add xdp->data_meta handling here. */ /* allocate a skb to store the frags */ skb = napi_alloc_skb(&rx_ring->q_vector->napi, IXGBE_RX_HDR_SIZE); if (unlikely(!skb)) return NULL; if (size > IXGBE_RX_HDR_SIZE) { if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) IXGBE_CB(skb)->dma = rx_buffer->dma; skb_add_rx_frag(skb, 0, rx_buffer->page, xdp->data - page_address(rx_buffer->page), size, truesize); #if (PAGE_SIZE < 8192) rx_buffer->page_offset ^= truesize; #else rx_buffer->page_offset += truesize; #endif } else { memcpy(__skb_put(skb, size), xdp->data, ALIGN(size, sizeof(long))); rx_buffer->pagecnt_bias++; } return skb; } static struct sk_buff *ixgbe_build_skb(struct ixgbe_ring *rx_ring, struct ixgbe_rx_buffer *rx_buffer, struct xdp_buff *xdp, union ixgbe_adv_rx_desc *rx_desc) { unsigned int metasize = xdp->data - xdp->data_meta; #if (PAGE_SIZE < 8192) unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; #else unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + SKB_DATA_ALIGN(xdp->data_end - xdp->data_hard_start); #endif struct sk_buff *skb; /* Prefetch first cache line of first page. If xdp->data_meta * is unused, this points extactly as xdp->data, otherwise we * likely have a consumer accessing first few bytes of meta * data, and then actual data. */ prefetch(xdp->data_meta); #if L1_CACHE_BYTES < 128 prefetch(xdp->data_meta + L1_CACHE_BYTES); #endif /* build an skb to around the page buffer */ skb = build_skb(xdp->data_hard_start, truesize); if (unlikely(!skb)) return NULL; /* update pointers within the skb to store the data */ skb_reserve(skb, xdp->data - xdp->data_hard_start); __skb_put(skb, xdp->data_end - xdp->data); if (metasize) skb_metadata_set(skb, metasize); /* record DMA address if this is the start of a chain of buffers */ if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) IXGBE_CB(skb)->dma = rx_buffer->dma; /* update buffer offset */ #if (PAGE_SIZE < 8192) rx_buffer->page_offset ^= truesize; #else rx_buffer->page_offset += truesize; #endif return skb; } static struct sk_buff *ixgbe_run_xdp(struct ixgbe_adapter *adapter, struct ixgbe_ring *rx_ring, struct xdp_buff *xdp) { int err, result = IXGBE_XDP_PASS; struct bpf_prog *xdp_prog; struct xdp_frame *xdpf; u32 act; rcu_read_lock(); xdp_prog = READ_ONCE(rx_ring->xdp_prog); if (!xdp_prog) goto xdp_out; prefetchw(xdp->data_hard_start); /* xdp_frame write */ act = bpf_prog_run_xdp(xdp_prog, xdp); switch (act) { case XDP_PASS: break; case XDP_TX: xdpf = convert_to_xdp_frame(xdp); if (unlikely(!xdpf)) { result = IXGBE_XDP_CONSUMED; break; } result = ixgbe_xmit_xdp_ring(adapter, xdpf); break; case XDP_REDIRECT: err = xdp_do_redirect(adapter->netdev, xdp, xdp_prog); if (!err) result = IXGBE_XDP_REDIR; else result = IXGBE_XDP_CONSUMED; break; default: bpf_warn_invalid_xdp_action(act); /* fallthrough */ case XDP_ABORTED: trace_xdp_exception(rx_ring->netdev, xdp_prog, act); /* fallthrough -- handle aborts by dropping packet */ case XDP_DROP: result = IXGBE_XDP_CONSUMED; break; } xdp_out: rcu_read_unlock(); return ERR_PTR(-result); } static void ixgbe_rx_buffer_flip(struct ixgbe_ring *rx_ring, struct ixgbe_rx_buffer *rx_buffer, unsigned int size) { #if (PAGE_SIZE < 8192) unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; rx_buffer->page_offset ^= truesize; #else unsigned int truesize = ring_uses_build_skb(rx_ring) ? SKB_DATA_ALIGN(IXGBE_SKB_PAD + size) : SKB_DATA_ALIGN(size); rx_buffer->page_offset += truesize; #endif } /** * ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf * @q_vector: structure containing interrupt and ring information * @rx_ring: rx descriptor ring to transact packets on * @budget: Total limit on number of packets to process * * This function provides a "bounce buffer" approach to Rx interrupt * processing. The advantage to this is that on systems that have * expensive overhead for IOMMU access this provides a means of avoiding * it by maintaining the mapping of the page to the syste. * * Returns amount of work completed **/ static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, struct ixgbe_ring *rx_ring, const int budget) { unsigned int total_rx_bytes = 0, total_rx_packets = 0; struct ixgbe_adapter *adapter = q_vector->adapter; #ifdef IXGBE_FCOE int ddp_bytes; unsigned int mss = 0; #endif /* IXGBE_FCOE */ u16 cleaned_count = ixgbe_desc_unused(rx_ring); unsigned int xdp_xmit = 0; struct xdp_buff xdp; xdp.rxq = &rx_ring->xdp_rxq; while (likely(total_rx_packets < budget)) { union ixgbe_adv_rx_desc *rx_desc; struct ixgbe_rx_buffer *rx_buffer; struct sk_buff *skb; unsigned int size; /* return some buffers to hardware, one at a time is too slow */ if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { ixgbe_alloc_rx_buffers(rx_ring, cleaned_count); cleaned_count = 0; } rx_desc = IXGBE_RX_DESC(rx_ring, rx_ring->next_to_clean); size = le16_to_cpu(rx_desc->wb.upper.length); if (!size) break; /* This memory barrier is needed to keep us from reading * any other fields out of the rx_desc until we know the * descriptor has been written back */ dma_rmb(); rx_buffer = ixgbe_get_rx_buffer(rx_ring, rx_desc, &skb, size); /* retrieve a buffer from the ring */ if (!skb) { xdp.data = page_address(rx_buffer->page) + rx_buffer->page_offset; xdp.data_meta = xdp.data; xdp.data_hard_start = xdp.data - ixgbe_rx_offset(rx_ring); xdp.data_end = xdp.data + size; skb = ixgbe_run_xdp(adapter, rx_ring, &xdp); } if (IS_ERR(skb)) { unsigned int xdp_res = -PTR_ERR(skb); if (xdp_res & (IXGBE_XDP_TX | IXGBE_XDP_REDIR)) { xdp_xmit |= xdp_res; ixgbe_rx_buffer_flip(rx_ring, rx_buffer, size); } else { rx_buffer->pagecnt_bias++; } total_rx_packets++; total_rx_bytes += size; } else if (skb) { ixgbe_add_rx_frag(rx_ring, rx_buffer, skb, size); } else if (ring_uses_build_skb(rx_ring)) { skb = ixgbe_build_skb(rx_ring, rx_buffer, &xdp, rx_desc); } else { skb = ixgbe_construct_skb(rx_ring, rx_buffer, &xdp, rx_desc); } /* exit if we failed to retrieve a buffer */ if (!skb) { rx_ring->rx_stats.alloc_rx_buff_failed++; rx_buffer->pagecnt_bias++; break; } ixgbe_put_rx_buffer(rx_ring, rx_buffer, skb); cleaned_count++; /* place incomplete frames back on ring for completion */ if (ixgbe_is_non_eop(rx_ring, rx_desc, skb)) continue; /* verify the packet layout is correct */ if (ixgbe_cleanup_headers(rx_ring, rx_desc, skb)) continue; /* probably a little skewed due to removing CRC */ total_rx_bytes += skb->len; /* populate checksum, timestamp, VLAN, and protocol */ ixgbe_process_skb_fields(rx_ring, rx_desc, skb); #ifdef IXGBE_FCOE /* if ddp, not passing to ULD unless for FCP_RSP or error */ if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) { ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb); /* include DDPed FCoE data */ if (ddp_bytes > 0) { if (!mss) { mss = rx_ring->netdev->mtu - sizeof(struct fcoe_hdr) - sizeof(struct fc_frame_header) - sizeof(struct fcoe_crc_eof); if (mss > 512) mss &= ~511; } total_rx_bytes += ddp_bytes; total_rx_packets += DIV_ROUND_UP(ddp_bytes, mss); } if (!ddp_bytes) { dev_kfree_skb_any(skb); continue; } } #endif /* IXGBE_FCOE */ ixgbe_rx_skb(q_vector, skb); /* update budget accounting */ total_rx_packets++; } if (xdp_xmit & IXGBE_XDP_REDIR) xdp_do_flush_map(); if (xdp_xmit & IXGBE_XDP_TX) { struct ixgbe_ring *ring = adapter->xdp_ring[smp_processor_id()]; /* Force memory writes to complete before letting h/w * know there are new descriptors to fetch. */ wmb(); writel(ring->next_to_use, ring->tail); } u64_stats_update_begin(&rx_ring->syncp); rx_ring->stats.packets += total_rx_packets; rx_ring->stats.bytes += total_rx_bytes; u64_stats_update_end(&rx_ring->syncp); q_vector->rx.total_packets += total_rx_packets; q_vector->rx.total_bytes += total_rx_bytes; return total_rx_packets; } /** * ixgbe_configure_msix - Configure MSI-X hardware * @adapter: board private structure * * ixgbe_configure_msix sets up the hardware to properly generate MSI-X * interrupts. **/ static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) { struct ixgbe_q_vector *q_vector; int v_idx; u32 mask; /* Populate MSIX to EITR Select */ if (adapter->num_vfs > 32) { u32 eitrsel = BIT(adapter->num_vfs - 32) - 1; IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel); } /* * Populate the IVAR table and set the ITR values to the * corresponding register. */ for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { struct ixgbe_ring *ring; q_vector = adapter->q_vector[v_idx]; ixgbe_for_each_ring(ring, q_vector->rx) ixgbe_set_ivar(adapter, 0, ring->reg_idx, v_idx); ixgbe_for_each_ring(ring, q_vector->tx) ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx); ixgbe_write_eitr(q_vector); } switch (adapter->hw.mac.type) { case ixgbe_mac_82598EB: ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX, v_idx); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: ixgbe_set_ivar(adapter, -1, 1, v_idx); break; default: break; } IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950); /* set up to autoclear timer, and the vectors */ mask = IXGBE_EIMS_ENABLE_MASK; mask &= ~(IXGBE_EIMS_OTHER | IXGBE_EIMS_MAILBOX | IXGBE_EIMS_LSC); IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); } /** * ixgbe_update_itr - update the dynamic ITR value based on statistics * @q_vector: structure containing interrupt and ring information * @ring_container: structure containing ring performance data * * Stores a new ITR value based on packets and byte * counts during the last interrupt. The advantage of per interrupt * computation is faster updates and more accurate ITR for the current * traffic pattern. Constants in this function were computed * based on theoretical maximum wire speed and thresholds were set based * on testing data as well as attempting to minimize response time * while increasing bulk throughput. **/ static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector, struct ixgbe_ring_container *ring_container) { unsigned int itr = IXGBE_ITR_ADAPTIVE_MIN_USECS | IXGBE_ITR_ADAPTIVE_LATENCY; unsigned int avg_wire_size, packets, bytes; unsigned long next_update = jiffies; /* If we don't have any rings just leave ourselves set for maximum * possible latency so we take ourselves out of the equation. */ if (!ring_container->ring) return; /* If we didn't update within up to 1 - 2 jiffies we can assume * that either packets are coming in so slow there hasn't been * any work, or that there is so much work that NAPI is dealing * with interrupt moderation and we don't need to do anything. */ if (time_after(next_update, ring_container->next_update)) goto clear_counts; packets = ring_container->total_packets; /* We have no packets to actually measure against. This means * either one of the other queues on this vector is active or * we are a Tx queue doing TSO with too high of an interrupt rate. * * When this occurs just tick up our delay by the minimum value * and hope that this extra delay will prevent us from being called * without any work on our queue. */ if (!packets) { itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; itr += ring_container->itr & IXGBE_ITR_ADAPTIVE_LATENCY; goto clear_counts; } bytes = ring_container->total_bytes; /* If packets are less than 4 or bytes are less than 9000 assume * insufficient data to use bulk rate limiting approach. We are * likely latency driven. */ if (packets < 4 && bytes < 9000) { itr = IXGBE_ITR_ADAPTIVE_LATENCY; goto adjust_by_size; } /* Between 4 and 48 we can assume that our current interrupt delay * is only slightly too low. As such we should increase it by a small * fixed amount. */ if (packets < 48) { itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; goto clear_counts; } /* Between 48 and 96 is our "goldilocks" zone where we are working * out "just right". Just report that our current ITR is good for us. */ if (packets < 96) { itr = q_vector->itr >> 2; goto clear_counts; } /* If packet count is 96 or greater we are likely looking at a slight * overrun of the delay we want. Try halving our delay to see if that * will cut the number of packets in half per interrupt. */ if (packets < 256) { itr = q_vector->itr >> 3; if (itr < IXGBE_ITR_ADAPTIVE_MIN_USECS) itr = IXGBE_ITR_ADAPTIVE_MIN_USECS; goto clear_counts; } /* The paths below assume we are dealing with a bulk ITR since number * of packets is 256 or greater. We are just going to have to compute * a value and try to bring the count under control, though for smaller * packet sizes there isn't much we can do as NAPI polling will likely * be kicking in sooner rather than later. */ itr = IXGBE_ITR_ADAPTIVE_BULK; adjust_by_size: /* If packet counts are 256 or greater we can assume we have a gross * overestimation of what the rate should be. Instead of trying to fine * tune it just use the formula below to try and dial in an exact value * give the current packet size of the frame. */ avg_wire_size = bytes / packets; /* The following is a crude approximation of: * wmem_default / (size + overhead) = desired_pkts_per_int * rate / bits_per_byte / (size + ethernet overhead) = pkt_rate * (desired_pkt_rate / pkt_rate) * usecs_per_sec = ITR value * * Assuming wmem_default is 212992 and overhead is 640 bytes per * packet, (256 skb, 64 headroom, 320 shared info), we can reduce the * formula down to * * (170 * (size + 24)) / (size + 640) = ITR * * We first do some math on the packet size and then finally bitshift * by 8 after rounding up. We also have to account for PCIe link speed * difference as ITR scales based on this. */ if (avg_wire_size <= 60) { /* Start at 50k ints/sec */ avg_wire_size = 5120; } else if (avg_wire_size <= 316) { /* 50K ints/sec to 16K ints/sec */ avg_wire_size *= 40; avg_wire_size += 2720; } else if (avg_wire_size <= 1084) { /* 16K ints/sec to 9.2K ints/sec */ avg_wire_size *= 15; avg_wire_size += 11452; } else if (avg_wire_size <= 1980) { /* 9.2K ints/sec to 8K ints/sec */ avg_wire_size *= 5; avg_wire_size += 22420; } else { /* plateau at a limit of 8K ints/sec */ avg_wire_size = 32256; } /* If we are in low latency mode half our delay which doubles the rate * to somewhere between 100K to 16K ints/sec */ if (itr & IXGBE_ITR_ADAPTIVE_LATENCY) avg_wire_size >>= 1; /* Resultant value is 256 times larger than it needs to be. This * gives us room to adjust the value as needed to either increase * or decrease the value based on link speeds of 10G, 2.5G, 1G, etc. * * Use addition as we have already recorded the new latency flag * for the ITR value. */ switch (q_vector->adapter->link_speed) { case IXGBE_LINK_SPEED_10GB_FULL: case IXGBE_LINK_SPEED_100_FULL: default: itr += DIV_ROUND_UP(avg_wire_size, IXGBE_ITR_ADAPTIVE_MIN_INC * 256) * IXGBE_ITR_ADAPTIVE_MIN_INC; break; case IXGBE_LINK_SPEED_2_5GB_FULL: case IXGBE_LINK_SPEED_1GB_FULL: case IXGBE_LINK_SPEED_10_FULL: itr += DIV_ROUND_UP(avg_wire_size, IXGBE_ITR_ADAPTIVE_MIN_INC * 64) * IXGBE_ITR_ADAPTIVE_MIN_INC; break; } clear_counts: /* write back value */ ring_container->itr = itr; /* next update should occur within next jiffy */ ring_container->next_update = next_update + 1; ring_container->total_bytes = 0; ring_container->total_packets = 0; } /** * ixgbe_write_eitr - write EITR register in hardware specific way * @q_vector: structure containing interrupt and ring information * * This function is made to be called by ethtool and by the driver * when it needs to update EITR registers at runtime. Hardware * specific quirks/differences are taken care of here. */ void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector) { struct ixgbe_adapter *adapter = q_vector->adapter; struct ixgbe_hw *hw = &adapter->hw; int v_idx = q_vector->v_idx; u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR; switch (adapter->hw.mac.type) { case ixgbe_mac_82598EB: /* must write high and low 16 bits to reset counter */ itr_reg |= (itr_reg << 16); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: /* * set the WDIS bit to not clear the timer bits and cause an * immediate assertion of the interrupt */ itr_reg |= IXGBE_EITR_CNT_WDIS; break; default: break; } IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg); } static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector) { u32 new_itr; ixgbe_update_itr(q_vector, &q_vector->tx); ixgbe_update_itr(q_vector, &q_vector->rx); /* use the smallest value of new ITR delay calculations */ new_itr = min(q_vector->rx.itr, q_vector->tx.itr); /* Clear latency flag if set, shift into correct position */ new_itr &= ~IXGBE_ITR_ADAPTIVE_LATENCY; new_itr <<= 2; if (new_itr != q_vector->itr) { /* save the algorithm value here */ q_vector->itr = new_itr; ixgbe_write_eitr(q_vector); } } /** * ixgbe_check_overtemp_subtask - check for over temperature * @adapter: pointer to adapter **/ static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 eicr = adapter->interrupt_event; s32 rc; if (test_bit(__IXGBE_DOWN, &adapter->state)) return; if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT)) return; adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT; switch (hw->device_id) { case IXGBE_DEV_ID_82599_T3_LOM: /* * Since the warning interrupt is for both ports * we don't have to check if: * - This interrupt wasn't for our port. * - We may have missed the interrupt so always have to * check if we got a LSC */ if (!(eicr & IXGBE_EICR_GPI_SDP0_8259X) && !(eicr & IXGBE_EICR_LSC)) return; if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) { u32 speed; bool link_up = false; hw->mac.ops.check_link(hw, &speed, &link_up, false); if (link_up) return; } /* Check if this is not due to overtemp */ if (hw->phy.ops.check_overtemp(hw) != IXGBE_ERR_OVERTEMP) return; break; case IXGBE_DEV_ID_X550EM_A_1G_T: case IXGBE_DEV_ID_X550EM_A_1G_T_L: rc = hw->phy.ops.check_overtemp(hw); if (rc != IXGBE_ERR_OVERTEMP) return; break; default: if (adapter->hw.mac.type >= ixgbe_mac_X540) return; if (!(eicr & IXGBE_EICR_GPI_SDP0(hw))) return; break; } e_crit(drv, "%s\n", ixgbe_overheat_msg); adapter->interrupt_event = 0; } static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr) { struct ixgbe_hw *hw = &adapter->hw; if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) && (eicr & IXGBE_EICR_GPI_SDP1(hw))) { e_crit(probe, "Fan has stopped, replace the adapter\n"); /* write to clear the interrupt */ IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); } } static void ixgbe_check_overtemp_event(struct ixgbe_adapter *adapter, u32 eicr) { struct ixgbe_hw *hw = &adapter->hw; if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)) return; switch (adapter->hw.mac.type) { case ixgbe_mac_82599EB: /* * Need to check link state so complete overtemp check * on service task */ if (((eicr & IXGBE_EICR_GPI_SDP0(hw)) || (eicr & IXGBE_EICR_LSC)) && (!test_bit(__IXGBE_DOWN, &adapter->state))) { adapter->interrupt_event = eicr; adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; ixgbe_service_event_schedule(adapter); return; } return; case ixgbe_mac_x550em_a: if (eicr & IXGBE_EICR_GPI_SDP0_X550EM_a) { adapter->interrupt_event = eicr; adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; ixgbe_service_event_schedule(adapter); IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, IXGBE_EICR_GPI_SDP0_X550EM_a); IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP0_X550EM_a); } return; case ixgbe_mac_X550: case ixgbe_mac_X540: if (!(eicr & IXGBE_EICR_TS)) return; break; default: return; } e_crit(drv, "%s\n", ixgbe_overheat_msg); } static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw) { switch (hw->mac.type) { case ixgbe_mac_82598EB: if (hw->phy.type == ixgbe_phy_nl) return true; return false; case ixgbe_mac_82599EB: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: switch (hw->mac.ops.get_media_type(hw)) { case ixgbe_media_type_fiber: case ixgbe_media_type_fiber_qsfp: return true; default: return false; } default: return false; } } static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr) { struct ixgbe_hw *hw = &adapter->hw; u32 eicr_mask = IXGBE_EICR_GPI_SDP2(hw); if (!ixgbe_is_sfp(hw)) return; /* Later MAC's use different SDP */ if (hw->mac.type >= ixgbe_mac_X540) eicr_mask = IXGBE_EICR_GPI_SDP0_X540; if (eicr & eicr_mask) { /* Clear the interrupt */ IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr_mask); if (!test_bit(__IXGBE_DOWN, &adapter->state)) { adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; adapter->sfp_poll_time = 0; ixgbe_service_event_schedule(adapter); } } if (adapter->hw.mac.type == ixgbe_mac_82599EB && (eicr & IXGBE_EICR_GPI_SDP1(hw))) { /* Clear the interrupt */ IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); if (!test_bit(__IXGBE_DOWN, &adapter->state)) { adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; ixgbe_service_event_schedule(adapter); } } } static void ixgbe_check_lsc(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; adapter->lsc_int++; adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; adapter->link_check_timeout = jiffies; if (!test_bit(__IXGBE_DOWN, &adapter->state)) { IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC); IXGBE_WRITE_FLUSH(hw); ixgbe_service_event_schedule(adapter); } } static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter, u64 qmask) { u32 mask; struct ixgbe_hw *hw = &adapter->hw; switch (hw->mac.type) { case ixgbe_mac_82598EB: mask = (IXGBE_EIMS_RTX_QUEUE & qmask); IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: mask = (qmask & 0xFFFFFFFF); if (mask) IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask); mask = (qmask >> 32); if (mask) IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask); break; default: break; } /* skip the flush */ } static inline void ixgbe_irq_disable_queues(struct ixgbe_adapter *adapter, u64 qmask) { u32 mask; struct ixgbe_hw *hw = &adapter->hw; switch (hw->mac.type) { case ixgbe_mac_82598EB: mask = (IXGBE_EIMS_RTX_QUEUE & qmask); IXGBE_WRITE_REG(hw, IXGBE_EIMC, mask); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: mask = (qmask & 0xFFFFFFFF); if (mask) IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(0), mask); mask = (qmask >> 32); if (mask) IXGBE_WRITE_REG(hw, IXGBE_EIMC_EX(1), mask); break; default: break; } /* skip the flush */ } /** * ixgbe_irq_enable - Enable default interrupt generation settings * @adapter: board private structure * @queues: enable irqs for queues * @flush: flush register write **/ static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues, bool flush) { struct ixgbe_hw *hw = &adapter->hw; u32 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE); /* don't reenable LSC while waiting for link */ if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) mask &= ~IXGBE_EIMS_LSC; if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) switch (adapter->hw.mac.type) { case ixgbe_mac_82599EB: mask |= IXGBE_EIMS_GPI_SDP0(hw); break; case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: mask |= IXGBE_EIMS_TS; break; default: break; } if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) mask |= IXGBE_EIMS_GPI_SDP1(hw); switch (adapter->hw.mac.type) { case ixgbe_mac_82599EB: mask |= IXGBE_EIMS_GPI_SDP1(hw); mask |= IXGBE_EIMS_GPI_SDP2(hw); /* fall through */ case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: if (adapter->hw.device_id == IXGBE_DEV_ID_X550EM_X_SFP || adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP || adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP_N) mask |= IXGBE_EIMS_GPI_SDP0(&adapter->hw); if (adapter->hw.phy.type == ixgbe_phy_x550em_ext_t) mask |= IXGBE_EICR_GPI_SDP0_X540; mask |= IXGBE_EIMS_ECC; mask |= IXGBE_EIMS_MAILBOX; break; default: break; } if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) && !(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT)) mask |= IXGBE_EIMS_FLOW_DIR; IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); if (queues) ixgbe_irq_enable_queues(adapter, ~0); if (flush) IXGBE_WRITE_FLUSH(&adapter->hw); } static irqreturn_t ixgbe_msix_other(int irq, void *data) { struct ixgbe_adapter *adapter = data; struct ixgbe_hw *hw = &adapter->hw; u32 eicr; /* * Workaround for Silicon errata. Use clear-by-write instead * of clear-by-read. Reading with EICS will return the * interrupt causes without clearing, which later be done * with the write to EICR. */ eicr = IXGBE_READ_REG(hw, IXGBE_EICS); /* The lower 16bits of the EICR register are for the queue interrupts * which should be masked here in order to not accidentally clear them if * the bits are high when ixgbe_msix_other is called. There is a race * condition otherwise which results in possible performance loss * especially if the ixgbe_msix_other interrupt is triggering * consistently (as it would when PPS is turned on for the X540 device) */ eicr &= 0xFFFF0000; IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr); if (eicr & IXGBE_EICR_LSC) ixgbe_check_lsc(adapter); if (eicr & IXGBE_EICR_MAILBOX) ixgbe_msg_task(adapter); switch (hw->mac.type) { case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: if (hw->phy.type == ixgbe_phy_x550em_ext_t && (eicr & IXGBE_EICR_GPI_SDP0_X540)) { adapter->flags2 |= IXGBE_FLAG2_PHY_INTERRUPT; ixgbe_service_event_schedule(adapter); IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP0_X540); } if (eicr & IXGBE_EICR_ECC) { e_info(link, "Received ECC Err, initiating reset\n"); set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); ixgbe_service_event_schedule(adapter); IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); } /* Handle Flow Director Full threshold interrupt */ if (eicr & IXGBE_EICR_FLOW_DIR) { int reinit_count = 0; int i; for (i = 0; i < adapter->num_tx_queues; i++) { struct ixgbe_ring *ring = adapter->tx_ring[i]; if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state)) reinit_count++; } if (reinit_count) { /* no more flow director interrupts until after init */ IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR); adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT; ixgbe_service_event_schedule(adapter); } } ixgbe_check_sfp_event(adapter, eicr); ixgbe_check_overtemp_event(adapter, eicr); break; default: break; } ixgbe_check_fan_failure(adapter, eicr); if (unlikely(eicr & IXGBE_EICR_TIMESYNC)) ixgbe_ptp_check_pps_event(adapter); /* re-enable the original interrupt state, no lsc, no queues */ if (!test_bit(__IXGBE_DOWN, &adapter->state)) ixgbe_irq_enable(adapter, false, false); return IRQ_HANDLED; } static irqreturn_t ixgbe_msix_clean_rings(int irq, void *data) { struct ixgbe_q_vector *q_vector = data; /* EIAM disabled interrupts (on this vector) for us */ if (q_vector->rx.ring || q_vector->tx.ring) napi_schedule_irqoff(&q_vector->napi); return IRQ_HANDLED; } /** * ixgbe_poll - NAPI Rx polling callback * @napi: structure for representing this polling device * @budget: how many packets driver is allowed to clean * * This function is used for legacy and MSI, NAPI mode **/ int ixgbe_poll(struct napi_struct *napi, int budget) { struct ixgbe_q_vector *q_vector = container_of(napi, struct ixgbe_q_vector, napi); struct ixgbe_adapter *adapter = q_vector->adapter; struct ixgbe_ring *ring; int per_ring_budget, work_done = 0; bool clean_complete = true; #ifdef CONFIG_IXGBE_DCA if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) ixgbe_update_dca(q_vector); #endif ixgbe_for_each_ring(ring, q_vector->tx) { bool wd = ring->xsk_umem ? ixgbe_clean_xdp_tx_irq(q_vector, ring, budget) : ixgbe_clean_tx_irq(q_vector, ring, budget); if (!wd) clean_complete = false; } /* Exit if we are called by netpoll */ if (budget <= 0) return budget; /* attempt to distribute budget to each queue fairly, but don't allow * the budget to go below 1 because we'll exit polling */ if (q_vector->rx.count > 1) per_ring_budget = max(budget/q_vector->rx.count, 1); else per_ring_budget = budget; ixgbe_for_each_ring(ring, q_vector->rx) { int cleaned = ring->xsk_umem ? ixgbe_clean_rx_irq_zc(q_vector, ring, per_ring_budget) : ixgbe_clean_rx_irq(q_vector, ring, per_ring_budget); work_done += cleaned; if (cleaned >= per_ring_budget) clean_complete = false; } /* If all work not completed, return budget and keep polling */ if (!clean_complete) return budget; /* all work done, exit the polling mode */ if (likely(napi_complete_done(napi, work_done))) { if (adapter->rx_itr_setting & 1) ixgbe_set_itr(q_vector); if (!test_bit(__IXGBE_DOWN, &adapter->state)) ixgbe_irq_enable_queues(adapter, BIT_ULL(q_vector->v_idx)); } return min(work_done, budget - 1); } /** * ixgbe_request_msix_irqs - Initialize MSI-X interrupts * @adapter: board private structure * * ixgbe_request_msix_irqs allocates MSI-X vectors and requests * interrupts from the kernel. **/ static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter) { struct net_device *netdev = adapter->netdev; unsigned int ri = 0, ti = 0; int vector, err; for (vector = 0; vector < adapter->num_q_vectors; vector++) { struct ixgbe_q_vector *q_vector = adapter->q_vector[vector]; struct msix_entry *entry = &adapter->msix_entries[vector]; if (q_vector->tx.ring && q_vector->rx.ring) { snprintf(q_vector->name, sizeof(q_vector->name), "%s-TxRx-%u", netdev->name, ri++); ti++; } else if (q_vector->rx.ring) { snprintf(q_vector->name, sizeof(q_vector->name), "%s-rx-%u", netdev->name, ri++); } else if (q_vector->tx.ring) { snprintf(q_vector->name, sizeof(q_vector->name), "%s-tx-%u", netdev->name, ti++); } else { /* skip this unused q_vector */ continue; } err = request_irq(entry->vector, &ixgbe_msix_clean_rings, 0, q_vector->name, q_vector); if (err) { e_err(probe, "request_irq failed for MSIX interrupt " "Error: %d\n", err); goto free_queue_irqs; } /* If Flow Director is enabled, set interrupt affinity */ if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { /* assign the mask for this irq */ irq_set_affinity_hint(entry->vector, &q_vector->affinity_mask); } } err = request_irq(adapter->msix_entries[vector].vector, ixgbe_msix_other, 0, netdev->name, adapter); if (err) { e_err(probe, "request_irq for msix_other failed: %d\n", err); goto free_queue_irqs; } return 0; free_queue_irqs: while (vector) { vector--; irq_set_affinity_hint(adapter->msix_entries[vector].vector, NULL); free_irq(adapter->msix_entries[vector].vector, adapter->q_vector[vector]); } adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; pci_disable_msix(adapter->pdev); kfree(adapter->msix_entries); adapter->msix_entries = NULL; return err; } /** * ixgbe_intr - legacy mode Interrupt Handler * @irq: interrupt number * @data: pointer to a network interface device structure **/ static irqreturn_t ixgbe_intr(int irq, void *data) { struct ixgbe_adapter *adapter = data; struct ixgbe_hw *hw = &adapter->hw; struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; u32 eicr; /* * Workaround for silicon errata #26 on 82598. Mask the interrupt * before the read of EICR. */ IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read * therefore no explicit interrupt disable is necessary */ eicr = IXGBE_READ_REG(hw, IXGBE_EICR); if (!eicr) { /* * shared interrupt alert! * make sure interrupts are enabled because the read will * have disabled interrupts due to EIAM * finish the workaround of silicon errata on 82598. Unmask * the interrupt that we masked before the EICR read. */ if (!test_bit(__IXGBE_DOWN, &adapter->state)) ixgbe_irq_enable(adapter, true, true); return IRQ_NONE; /* Not our interrupt */ } if (eicr & IXGBE_EICR_LSC) ixgbe_check_lsc(adapter); switch (hw->mac.type) { case ixgbe_mac_82599EB: ixgbe_check_sfp_event(adapter, eicr); /* Fall through */ case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: if (eicr & IXGBE_EICR_ECC) { e_info(link, "Received ECC Err, initiating reset\n"); set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); ixgbe_service_event_schedule(adapter); IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); } ixgbe_check_overtemp_event(adapter, eicr); break; default: break; } ixgbe_check_fan_failure(adapter, eicr); if (unlikely(eicr & IXGBE_EICR_TIMESYNC)) ixgbe_ptp_check_pps_event(adapter); /* would disable interrupts here but EIAM disabled it */ napi_schedule_irqoff(&q_vector->napi); /* * re-enable link(maybe) and non-queue interrupts, no flush. * ixgbe_poll will re-enable the queue interrupts */ if (!test_bit(__IXGBE_DOWN, &adapter->state)) ixgbe_irq_enable(adapter, false, false); return IRQ_HANDLED; } /** * ixgbe_request_irq - initialize interrupts * @adapter: board private structure * * Attempts to configure interrupts using the best available * capabilities of the hardware and kernel. **/ static int ixgbe_request_irq(struct ixgbe_adapter *adapter) { struct net_device *netdev = adapter->netdev; int err; if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) err = ixgbe_request_msix_irqs(adapter); else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) err = request_irq(adapter->pdev->irq, ixgbe_intr, 0, netdev->name, adapter); else err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED, netdev->name, adapter); if (err) e_err(probe, "request_irq failed, Error %d\n", err); return err; } static void ixgbe_free_irq(struct ixgbe_adapter *adapter) { int vector; if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { free_irq(adapter->pdev->irq, adapter); return; } if (!adapter->msix_entries) return; for (vector = 0; vector < adapter->num_q_vectors; vector++) { struct ixgbe_q_vector *q_vector = adapter->q_vector[vector]; struct msix_entry *entry = &adapter->msix_entries[vector]; /* free only the irqs that were actually requested */ if (!q_vector->rx.ring && !q_vector->tx.ring) continue; /* clear the affinity_mask in the IRQ descriptor */ irq_set_affinity_hint(entry->vector, NULL); free_irq(entry->vector, q_vector); } free_irq(adapter->msix_entries[vector].vector, adapter); } /** * ixgbe_irq_disable - Mask off interrupt generation on the NIC * @adapter: board private structure **/ static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) { switch (adapter->hw.mac.type) { case ixgbe_mac_82598EB: IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000); IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0); IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0); break; default: break; } IXGBE_WRITE_FLUSH(&adapter->hw); if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { int vector; for (vector = 0; vector < adapter->num_q_vectors; vector++) synchronize_irq(adapter->msix_entries[vector].vector); synchronize_irq(adapter->msix_entries[vector++].vector); } else { synchronize_irq(adapter->pdev->irq); } } /** * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts * @adapter: board private structure * **/ static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) { struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; ixgbe_write_eitr(q_vector); ixgbe_set_ivar(adapter, 0, 0, 0); ixgbe_set_ivar(adapter, 1, 0, 0); e_info(hw, "Legacy interrupt IVAR setup done\n"); } /** * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset * @adapter: board private structure * @ring: structure containing ring specific data * * Configure the Tx descriptor ring after a reset. **/ void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter, struct ixgbe_ring *ring) { struct ixgbe_hw *hw = &adapter->hw; u64 tdba = ring->dma; int wait_loop = 10; u32 txdctl = IXGBE_TXDCTL_ENABLE; u8 reg_idx = ring->reg_idx; ring->xsk_umem = NULL; if (ring_is_xdp(ring)) ring->xsk_umem = ixgbe_xsk_umem(adapter, ring); /* disable queue to avoid issues while updating state */ IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), 0); IXGBE_WRITE_FLUSH(hw); IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx), (tdba & DMA_BIT_MASK(32))); IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32)); IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx), ring->count * sizeof(union ixgbe_adv_tx_desc)); IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0); IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0); ring->tail = adapter->io_addr + IXGBE_TDT(reg_idx); /* * set WTHRESH to encourage burst writeback, it should not be set * higher than 1 when: * - ITR is 0 as it could cause false TX hangs * - ITR is set to > 100k int/sec and BQL is enabled * * In order to avoid issues WTHRESH + PTHRESH should always be equal * to or less than the number of on chip descriptors, which is * currently 40. */ if (!ring->q_vector || (ring->q_vector->itr < IXGBE_100K_ITR)) txdctl |= 1u << 16; /* WTHRESH = 1 */ else txdctl |= 8u << 16; /* WTHRESH = 8 */ /* * Setting PTHRESH to 32 both improves performance * and avoids a TX hang with DFP enabled */ txdctl |= (1u << 8) | /* HTHRESH = 1 */ 32; /* PTHRESH = 32 */ /* reinitialize flowdirector state */ if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { ring->atr_sample_rate = adapter->atr_sample_rate; ring->atr_count = 0; set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state); } else { ring->atr_sample_rate = 0; } /* initialize XPS */ if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE, &ring->state)) { struct ixgbe_q_vector *q_vector = ring->q_vector; if (q_vector) netif_set_xps_queue(ring->netdev, &q_vector->affinity_mask, ring->queue_index); } clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state); /* reinitialize tx_buffer_info */ memset(ring->tx_buffer_info, 0, sizeof(struct ixgbe_tx_buffer) * ring->count); /* enable queue */ IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl); /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */ if (hw->mac.type == ixgbe_mac_82598EB && !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) return; /* poll to verify queue is enabled */ do { usleep_range(1000, 2000); txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE)); if (!wait_loop) hw_dbg(hw, "Could not enable Tx Queue %d\n", reg_idx); } static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 rttdcs, mtqc; u8 tcs = adapter->hw_tcs; if (hw->mac.type == ixgbe_mac_82598EB) return; /* disable the arbiter while setting MTQC */ rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS); rttdcs |= IXGBE_RTTDCS_ARBDIS; IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); /* set transmit pool layout */ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { mtqc = IXGBE_MTQC_VT_ENA; if (tcs > 4) mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; else if (tcs > 1) mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; else if (adapter->ring_feature[RING_F_VMDQ].mask == IXGBE_82599_VMDQ_4Q_MASK) mtqc |= IXGBE_MTQC_32VF; else mtqc |= IXGBE_MTQC_64VF; } else { if (tcs > 4) { mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; } else if (tcs > 1) { mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; } else { u8 max_txq = adapter->num_tx_queues + adapter->num_xdp_queues; if (max_txq > 63) mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; else mtqc = IXGBE_MTQC_64Q_1PB; } } IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc); /* Enable Security TX Buffer IFG for multiple pb */ if (tcs) { u32 sectx = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG); sectx |= IXGBE_SECTX_DCB; IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, sectx); } /* re-enable the arbiter */ rttdcs &= ~IXGBE_RTTDCS_ARBDIS; IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); } /** * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset * @adapter: board private structure * * Configure the Tx unit of the MAC after a reset. **/ static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 dmatxctl; u32 i; ixgbe_setup_mtqc(adapter); if (hw->mac.type != ixgbe_mac_82598EB) { /* DMATXCTL.EN must be before Tx queues are enabled */ dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL); dmatxctl |= IXGBE_DMATXCTL_TE; IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl); } /* Setup the HW Tx Head and Tail descriptor pointers */ for (i = 0; i < adapter->num_tx_queues; i++) ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]); for (i = 0; i < adapter->num_xdp_queues; i++) ixgbe_configure_tx_ring(adapter, adapter->xdp_ring[i]); } static void ixgbe_enable_rx_drop(struct ixgbe_adapter *adapter, struct ixgbe_ring *ring) { struct ixgbe_hw *hw = &adapter->hw; u8 reg_idx = ring->reg_idx; u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx)); srrctl |= IXGBE_SRRCTL_DROP_EN; IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); } static void ixgbe_disable_rx_drop(struct ixgbe_adapter *adapter, struct ixgbe_ring *ring) { struct ixgbe_hw *hw = &adapter->hw; u8 reg_idx = ring->reg_idx; u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx)); srrctl &= ~IXGBE_SRRCTL_DROP_EN; IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); } #ifdef CONFIG_IXGBE_DCB void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter) #else static void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter) #endif { int i; bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; if (adapter->ixgbe_ieee_pfc) pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); /* * We should set the drop enable bit if: * SR-IOV is enabled * or * Number of Rx queues > 1 and flow control is disabled * * This allows us to avoid head of line blocking for security * and performance reasons. */ if (adapter->num_vfs || (adapter->num_rx_queues > 1 && !(adapter->hw.fc.current_mode & ixgbe_fc_tx_pause) && !pfc_en)) { for (i = 0; i < adapter->num_rx_queues; i++) ixgbe_enable_rx_drop(adapter, adapter->rx_ring[i]); } else { for (i = 0; i < adapter->num_rx_queues; i++) ixgbe_disable_rx_drop(adapter, adapter->rx_ring[i]); } } #define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, struct ixgbe_ring *rx_ring) { struct ixgbe_hw *hw = &adapter->hw; u32 srrctl; u8 reg_idx = rx_ring->reg_idx; if (hw->mac.type == ixgbe_mac_82598EB) { u16 mask = adapter->ring_feature[RING_F_RSS].mask; /* * if VMDq is not active we must program one srrctl register * per RSS queue since we have enabled RDRXCTL.MVMEN */ reg_idx &= mask; } /* configure header buffer length, needed for RSC */ srrctl = IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT; /* configure the packet buffer length */ if (rx_ring->xsk_umem) { u32 xsk_buf_len = rx_ring->xsk_umem->chunk_size_nohr - XDP_PACKET_HEADROOM; /* If the MAC support setting RXDCTL.RLPML, the * SRRCTL[n].BSIZEPKT is set to PAGE_SIZE and * RXDCTL.RLPML is set to the actual UMEM buffer * size. If not, then we are stuck with a 1k buffer * size resolution. In this case frames larger than * the UMEM buffer size viewed in a 1k resolution will * be dropped. */ if (hw->mac.type != ixgbe_mac_82599EB) srrctl |= PAGE_SIZE >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; else srrctl |= xsk_buf_len >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; } else if (test_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state)) { srrctl |= IXGBE_RXBUFFER_3K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; } else { srrctl |= IXGBE_RXBUFFER_2K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; } /* configure descriptor type */ srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); } /** * ixgbe_rss_indir_tbl_entries - Return RSS indirection table entries * @adapter: device handle * * - 82598/82599/X540: 128 * - X550(non-SRIOV mode): 512 * - X550(SRIOV mode): 64 */ u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter) { if (adapter->hw.mac.type < ixgbe_mac_X550) return 128; else if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) return 64; else return 512; } /** * ixgbe_store_key - Write the RSS key to HW * @adapter: device handle * * Write the RSS key stored in adapter.rss_key to HW. */ void ixgbe_store_key(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; int i; for (i = 0; i < 10; i++) IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), adapter->rss_key[i]); } /** * ixgbe_init_rss_key - Initialize adapter RSS key * @adapter: device handle * * Allocates and initializes the RSS key if it is not allocated. **/ static inline int ixgbe_init_rss_key(struct ixgbe_adapter *adapter) { u32 *rss_key; if (!adapter->rss_key) { rss_key = kzalloc(IXGBE_RSS_KEY_SIZE, GFP_KERNEL); if (unlikely(!rss_key)) return -ENOMEM; netdev_rss_key_fill(rss_key, IXGBE_RSS_KEY_SIZE); adapter->rss_key = rss_key; } return 0; } /** * ixgbe_store_reta - Write the RETA table to HW * @adapter: device handle * * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW. */ void ixgbe_store_reta(struct ixgbe_adapter *adapter) { u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter); struct ixgbe_hw *hw = &adapter->hw; u32 reta = 0; u32 indices_multi; u8 *indir_tbl = adapter->rss_indir_tbl; /* Fill out the redirection table as follows: * - 82598: 8 bit wide entries containing pair of 4 bit RSS * indices. * - 82599/X540: 8 bit wide entries containing 4 bit RSS index * - X550: 8 bit wide entries containing 6 bit RSS index */ if (adapter->hw.mac.type == ixgbe_mac_82598EB) indices_multi = 0x11; else indices_multi = 0x1; /* Write redirection table to HW */ for (i = 0; i < reta_entries; i++) { reta |= indices_multi * indir_tbl[i] << (i & 0x3) * 8; if ((i & 3) == 3) { if (i < 128) IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); else IXGBE_WRITE_REG(hw, IXGBE_ERETA((i >> 2) - 32), reta); reta = 0; } } } /** * ixgbe_store_vfreta - Write the RETA table to HW (x550 devices in SRIOV mode) * @adapter: device handle * * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW. */ static void ixgbe_store_vfreta(struct ixgbe_adapter *adapter) { u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter); struct ixgbe_hw *hw = &adapter->hw; u32 vfreta = 0; /* Write redirection table to HW */ for (i = 0; i < reta_entries; i++) { u16 pool = adapter->num_rx_pools; vfreta |= (u32)adapter->rss_indir_tbl[i] << (i & 0x3) * 8; if ((i & 3) != 3) continue; while (pool--) IXGBE_WRITE_REG(hw, IXGBE_PFVFRETA(i >> 2, VMDQ_P(pool)), vfreta); vfreta = 0; } } static void ixgbe_setup_reta(struct ixgbe_adapter *adapter) { u32 i, j; u32 reta_entries = ixgbe_rss_indir_tbl_entries(adapter); u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; /* Program table for at least 4 queues w/ SR-IOV so that VFs can * make full use of any rings they may have. We will use the * PSRTYPE register to control how many rings we use within the PF. */ if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && (rss_i < 4)) rss_i = 4; /* Fill out hash function seeds */ ixgbe_store_key(adapter); /* Fill out redirection table */ memset(adapter->rss_indir_tbl, 0, sizeof(adapter->rss_indir_tbl)); for (i = 0, j = 0; i < reta_entries; i++, j++) { if (j == rss_i) j = 0; adapter->rss_indir_tbl[i] = j; } ixgbe_store_reta(adapter); } static void ixgbe_setup_vfreta(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; int i, j; /* Fill out hash function seeds */ for (i = 0; i < 10; i++) { u16 pool = adapter->num_rx_pools; while (pool--) IXGBE_WRITE_REG(hw, IXGBE_PFVFRSSRK(i, VMDQ_P(pool)), *(adapter->rss_key + i)); } /* Fill out the redirection table */ for (i = 0, j = 0; i < 64; i++, j++) { if (j == rss_i) j = 0; adapter->rss_indir_tbl[i] = j; } ixgbe_store_vfreta(adapter); } static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 mrqc = 0, rss_field = 0, vfmrqc = 0; u32 rxcsum; /* Disable indicating checksum in descriptor, enables RSS hash */ rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); rxcsum |= IXGBE_RXCSUM_PCSD; IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); if (adapter->hw.mac.type == ixgbe_mac_82598EB) { if (adapter->ring_feature[RING_F_RSS].mask) mrqc = IXGBE_MRQC_RSSEN; } else { u8 tcs = adapter->hw_tcs; if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { if (tcs > 4) mrqc = IXGBE_MRQC_VMDQRT8TCEN; /* 8 TCs */ else if (tcs > 1) mrqc = IXGBE_MRQC_VMDQRT4TCEN; /* 4 TCs */ else if (adapter->ring_feature[RING_F_VMDQ].mask == IXGBE_82599_VMDQ_4Q_MASK) mrqc = IXGBE_MRQC_VMDQRSS32EN; else mrqc = IXGBE_MRQC_VMDQRSS64EN; /* Enable L3/L4 for Tx Switched packets only for X550, * older devices do not support this feature */ if (hw->mac.type >= ixgbe_mac_X550) mrqc |= IXGBE_MRQC_L3L4TXSWEN; } else { if (tcs > 4) mrqc = IXGBE_MRQC_RTRSS8TCEN; else if (tcs > 1) mrqc = IXGBE_MRQC_RTRSS4TCEN; else mrqc = IXGBE_MRQC_RSSEN; } } /* Perform hash on these packet types */ rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4 | IXGBE_MRQC_RSS_FIELD_IPV4_TCP | IXGBE_MRQC_RSS_FIELD_IPV6 | IXGBE_MRQC_RSS_FIELD_IPV6_TCP; if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV4_UDP) rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP; if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV6_UDP) rss_field |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP; if ((hw->mac.type >= ixgbe_mac_X550) && (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) { u16 pool = adapter->num_rx_pools; /* Enable VF RSS mode */ mrqc |= IXGBE_MRQC_MULTIPLE_RSS; IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); /* Setup RSS through the VF registers */ ixgbe_setup_vfreta(adapter); vfmrqc = IXGBE_MRQC_RSSEN; vfmrqc |= rss_field; while (pool--) IXGBE_WRITE_REG(hw, IXGBE_PFVFMRQC(VMDQ_P(pool)), vfmrqc); } else { ixgbe_setup_reta(adapter); mrqc |= rss_field; IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); } } /** * ixgbe_configure_rscctl - enable RSC for the indicated ring * @adapter: address of board private structure * @ring: structure containing ring specific data **/ static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter, struct ixgbe_ring *ring) { struct ixgbe_hw *hw = &adapter->hw; u32 rscctrl; u8 reg_idx = ring->reg_idx; if (!ring_is_rsc_enabled(ring)) return; rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx)); rscctrl |= IXGBE_RSCCTL_RSCEN; /* * we must limit the number of descriptors so that the * total size of max desc * buf_len is not greater * than 65536 */ rscctrl |= IXGBE_RSCCTL_MAXDESC_16; IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl); } #define IXGBE_MAX_RX_DESC_POLL 10 static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter, struct ixgbe_ring *ring) { struct ixgbe_hw *hw = &adapter->hw; int wait_loop = IXGBE_MAX_RX_DESC_POLL; u32 rxdctl; u8 reg_idx = ring->reg_idx; if (ixgbe_removed(hw->hw_addr)) return; /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */ if (hw->mac.type == ixgbe_mac_82598EB && !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) return; do { usleep_range(1000, 2000); rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE)); if (!wait_loop) { e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within " "the polling period\n", reg_idx); } } void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter, struct ixgbe_ring *ring) { struct ixgbe_hw *hw = &adapter->hw; union ixgbe_adv_rx_desc *rx_desc; u64 rdba = ring->dma; u32 rxdctl; u8 reg_idx = ring->reg_idx; xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq); ring->xsk_umem = ixgbe_xsk_umem(adapter, ring); if (ring->xsk_umem) { ring->zca.free = ixgbe_zca_free; WARN_ON(xdp_rxq_info_reg_mem_model(&ring->xdp_rxq, MEM_TYPE_ZERO_COPY, &ring->zca)); } else { WARN_ON(xdp_rxq_info_reg_mem_model(&ring->xdp_rxq, MEM_TYPE_PAGE_SHARED, NULL)); } /* disable queue to avoid use of these values while updating state */ rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); rxdctl &= ~IXGBE_RXDCTL_ENABLE; /* write value back with RXDCTL.ENABLE bit cleared */ IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); IXGBE_WRITE_FLUSH(hw); IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32))); IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32)); IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx), ring->count * sizeof(union ixgbe_adv_rx_desc)); /* Force flushing of IXGBE_RDLEN to prevent MDD */ IXGBE_WRITE_FLUSH(hw); IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0); IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0); ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx); ixgbe_configure_srrctl(adapter, ring); ixgbe_configure_rscctl(adapter, ring); if (hw->mac.type == ixgbe_mac_82598EB) { /* * enable cache line friendly hardware writes: * PTHRESH=32 descriptors (half the internal cache), * this also removes ugly rx_no_buffer_count increment * HTHRESH=4 descriptors (to minimize latency on fetch) * WTHRESH=8 burst writeback up to two cache lines */ rxdctl &= ~0x3FFFFF; rxdctl |= 0x080420; #if (PAGE_SIZE < 8192) /* RXDCTL.RLPML does not work on 82599 */ } else if (hw->mac.type != ixgbe_mac_82599EB) { rxdctl &= ~(IXGBE_RXDCTL_RLPMLMASK | IXGBE_RXDCTL_RLPML_EN); /* Limit the maximum frame size so we don't overrun the skb. * This can happen in SRIOV mode when the MTU of the VF is * higher than the MTU of the PF. */ if (ring_uses_build_skb(ring) && !test_bit(__IXGBE_RX_3K_BUFFER, &ring->state)) rxdctl |= IXGBE_MAX_2K_FRAME_BUILD_SKB | IXGBE_RXDCTL_RLPML_EN; #endif } if (ring->xsk_umem && hw->mac.type != ixgbe_mac_82599EB) { u32 xsk_buf_len = ring->xsk_umem->chunk_size_nohr - XDP_PACKET_HEADROOM; rxdctl &= ~(IXGBE_RXDCTL_RLPMLMASK | IXGBE_RXDCTL_RLPML_EN); rxdctl |= xsk_buf_len | IXGBE_RXDCTL_RLPML_EN; ring->rx_buf_len = xsk_buf_len; } /* initialize rx_buffer_info */ memset(ring->rx_buffer_info, 0, sizeof(struct ixgbe_rx_buffer) * ring->count); /* initialize Rx descriptor 0 */ rx_desc = IXGBE_RX_DESC(ring, 0); rx_desc->wb.upper.length = 0; /* enable receive descriptor ring */ rxdctl |= IXGBE_RXDCTL_ENABLE; IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); ixgbe_rx_desc_queue_enable(adapter, ring); if (ring->xsk_umem) ixgbe_alloc_rx_buffers_zc(ring, ixgbe_desc_unused(ring)); else ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring)); } static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; int rss_i = adapter->ring_feature[RING_F_RSS].indices; u16 pool = adapter->num_rx_pools; /* PSRTYPE must be initialized in non 82598 adapters */ u32 psrtype = IXGBE_PSRTYPE_TCPHDR | IXGBE_PSRTYPE_UDPHDR | IXGBE_PSRTYPE_IPV4HDR | IXGBE_PSRTYPE_L2HDR | IXGBE_PSRTYPE_IPV6HDR; if (hw->mac.type == ixgbe_mac_82598EB) return; if (rss_i > 3) psrtype |= 2u << 29; else if (rss_i > 1) psrtype |= 1u << 29; while (pool--) IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype); } static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u16 pool = adapter->num_rx_pools; u32 reg_offset, vf_shift, vmolr; u32 gcr_ext, vmdctl; int i; if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) return; vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); vmdctl |= IXGBE_VMD_CTL_VMDQ_EN; vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; vmdctl |= VMDQ_P(0) << IXGBE_VT_CTL_POOL_SHIFT; vmdctl |= IXGBE_VT_CTL_REPLEN; IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); /* accept untagged packets until a vlan tag is * specifically set for the VMDQ queue/pool */ vmolr = IXGBE_VMOLR_AUPE; while (pool--) IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(pool)), vmolr); vf_shift = VMDQ_P(0) % 32; reg_offset = (VMDQ_P(0) >= 32) ? 1 : 0; /* Enable only the PF's pool for Tx/Rx */ IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), GENMASK(31, vf_shift)); IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), reg_offset - 1); IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), GENMASK(31, vf_shift)); IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), reg_offset - 1); if (adapter->bridge_mode == BRIDGE_MODE_VEB) IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); /* Map PF MAC address in RAR Entry 0 to first pool following VFs */ hw->mac.ops.set_vmdq(hw, 0, VMDQ_P(0)); /* clear VLAN promisc flag so VFTA will be updated if necessary */ adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC; /* * Set up VF register offsets for selected VT Mode, * i.e. 32 or 64 VFs for SR-IOV */ switch (adapter->ring_feature[RING_F_VMDQ].mask) { case IXGBE_82599_VMDQ_8Q_MASK: gcr_ext = IXGBE_GCR_EXT_VT_MODE_16; break; case IXGBE_82599_VMDQ_4Q_MASK: gcr_ext = IXGBE_GCR_EXT_VT_MODE_32; break; default: gcr_ext = IXGBE_GCR_EXT_VT_MODE_64; break; } IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext); for (i = 0; i < adapter->num_vfs; i++) { /* configure spoof checking */ ixgbe_ndo_set_vf_spoofchk(adapter->netdev, i, adapter->vfinfo[i].spoofchk_enabled); /* Enable/Disable RSS query feature */ ixgbe_ndo_set_vf_rss_query_en(adapter->netdev, i, adapter->vfinfo[i].rss_query_enabled); } } static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; struct net_device *netdev = adapter->netdev; int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; struct ixgbe_ring *rx_ring; int i; u32 mhadd, hlreg0; #ifdef IXGBE_FCOE /* adjust max frame to be able to do baby jumbo for FCoE */ if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) && (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE)) max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE; #endif /* IXGBE_FCOE */ /* adjust max frame to be at least the size of a standard frame */ if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) max_frame = (ETH_FRAME_LEN + ETH_FCS_LEN); mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { mhadd &= ~IXGBE_MHADD_MFS_MASK; mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); } hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */ hlreg0 |= IXGBE_HLREG0_JUMBOEN; IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); /* * Setup the HW Rx Head and Tail Descriptor Pointers and * the Base and Length of the Rx Descriptor Ring */ for (i = 0; i < adapter->num_rx_queues; i++) { rx_ring = adapter->rx_ring[i]; clear_ring_rsc_enabled(rx_ring); clear_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); clear_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) set_ring_rsc_enabled(rx_ring); if (test_bit(__IXGBE_RX_FCOE, &rx_ring->state)) set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); clear_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); if (adapter->flags2 & IXGBE_FLAG2_RX_LEGACY) continue; set_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); #if (PAGE_SIZE < 8192) if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); if (IXGBE_2K_TOO_SMALL_WITH_PADDING || (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); #endif } } static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); switch (hw->mac.type) { case ixgbe_mac_82598EB: /* * For VMDq support of different descriptor types or * buffer sizes through the use of multiple SRRCTL * registers, RDRXCTL.MVMEN must be set to 1 * * also, the manual doesn't mention it clearly but DCA hints * will only use queue 0's tags unless this bit is set. Side * effects of setting this bit are only that SRRCTL must be * fully programmed [0..15] */ rdrxctl |= IXGBE_RDRXCTL_MVMEN; break; case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: if (adapter->num_vfs) rdrxctl |= IXGBE_RDRXCTL_PSP; /* fall through */ case ixgbe_mac_82599EB: case ixgbe_mac_X540: /* Disable RSC for ACK packets */ IXGBE_WRITE_REG(hw, IXGBE_RSCDBU, (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU))); rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE; /* hardware requires some bits to be set by default */ rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX); rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP; break; default: /* We should do nothing since we don't know this hardware */ return; } IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); } /** * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset * @adapter: board private structure * * Configure the Rx unit of the MAC after a reset. **/ static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; int i; u32 rxctrl, rfctl; /* disable receives while setting up the descriptors */ hw->mac.ops.disable_rx(hw); ixgbe_setup_psrtype(adapter); ixgbe_setup_rdrxctl(adapter); /* RSC Setup */ rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL); rfctl &= ~IXGBE_RFCTL_RSC_DIS; if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) rfctl |= IXGBE_RFCTL_RSC_DIS; /* disable NFS filtering */ rfctl |= (IXGBE_RFCTL_NFSW_DIS | IXGBE_RFCTL_NFSR_DIS); IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl); /* Program registers for the distribution of queues */ ixgbe_setup_mrqc(adapter); /* set_rx_buffer_len must be called before ring initialization */ ixgbe_set_rx_buffer_len(adapter); /* * Setup the HW Rx Head and Tail Descriptor Pointers and * the Base and Length of the Rx Descriptor Ring */ for (i = 0; i < adapter->num_rx_queues; i++) ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]); rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); /* disable drop enable for 82598 parts */ if (hw->mac.type == ixgbe_mac_82598EB) rxctrl |= IXGBE_RXCTRL_DMBYPS; /* enable all receives */ rxctrl |= IXGBE_RXCTRL_RXEN; hw->mac.ops.enable_rx_dma(hw, rxctrl); } static int ixgbe_vlan_rx_add_vid(struct net_device *netdev, __be16 proto, u16 vid) { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_hw *hw = &adapter->hw; /* add VID to filter table */ if (!vid || !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) hw->mac.ops.set_vfta(&adapter->hw, vid, VMDQ_P(0), true, !!vid); set_bit(vid, adapter->active_vlans); return 0; } static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan) { u32 vlvf; int idx; /* short cut the special case */ if (vlan == 0) return 0; /* Search for the vlan id in the VLVF entries */ for (idx = IXGBE_VLVF_ENTRIES; --idx;) { vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(idx)); if ((vlvf & VLAN_VID_MASK) == vlan) break; } return idx; } void ixgbe_update_pf_promisc_vlvf(struct ixgbe_adapter *adapter, u32 vid) { struct ixgbe_hw *hw = &adapter->hw; u32 bits, word; int idx; idx = ixgbe_find_vlvf_entry(hw, vid); if (!idx) return; /* See if any other pools are set for this VLAN filter * entry other than the PF. */ word = idx * 2 + (VMDQ_P(0) / 32); bits = ~BIT(VMDQ_P(0) % 32); bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); /* Disable the filter so this falls into the default pool. */ if (!bits && !IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1))) { if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), 0); IXGBE_WRITE_REG(hw, IXGBE_VLVF(idx), 0); } } static int ixgbe_vlan_rx_kill_vid(struct net_device *netdev, __be16 proto, u16 vid) { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_hw *hw = &adapter->hw; /* remove VID from filter table */ if (vid && !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), false, true); clear_bit(vid, adapter->active_vlans); return 0; } /** * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping * @adapter: driver data */ static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 vlnctrl; int i, j; switch (hw->mac.type) { case ixgbe_mac_82598EB: vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); vlnctrl &= ~IXGBE_VLNCTRL_VME; IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: for (i = 0; i < adapter->num_rx_queues; i++) { struct ixgbe_ring *ring = adapter->rx_ring[i]; if (!netif_is_ixgbe(ring->netdev)) continue; j = ring->reg_idx; vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); vlnctrl &= ~IXGBE_RXDCTL_VME; IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); } break; default: break; } } /** * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping * @adapter: driver data */ static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 vlnctrl; int i, j; switch (hw->mac.type) { case ixgbe_mac_82598EB: vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); vlnctrl |= IXGBE_VLNCTRL_VME; IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: for (i = 0; i < adapter->num_rx_queues; i++) { struct ixgbe_ring *ring = adapter->rx_ring[i]; if (!netif_is_ixgbe(ring->netdev)) continue; j = ring->reg_idx; vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); vlnctrl |= IXGBE_RXDCTL_VME; IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); } break; default: break; } } static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 vlnctrl, i; vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) { /* For VMDq and SR-IOV we must leave VLAN filtering enabled */ vlnctrl |= IXGBE_VLNCTRL_VFE; IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); } else { vlnctrl &= ~IXGBE_VLNCTRL_VFE; IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); return; } /* Nothing to do for 82598 */ if (hw->mac.type == ixgbe_mac_82598EB) return; /* We are already in VLAN promisc, nothing to do */ if (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC) return; /* Set flag so we don't redo unnecessary work */ adapter->flags2 |= IXGBE_FLAG2_VLAN_PROMISC; /* Add PF to all active pools */ for (i = IXGBE_VLVF_ENTRIES; --i;) { u32 reg_offset = IXGBE_VLVFB(i * 2 + VMDQ_P(0) / 32); u32 vlvfb = IXGBE_READ_REG(hw, reg_offset); vlvfb |= BIT(VMDQ_P(0) % 32); IXGBE_WRITE_REG(hw, reg_offset, vlvfb); } /* Set all bits in the VLAN filter table array */ for (i = hw->mac.vft_size; i--;) IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), ~0U); } #define VFTA_BLOCK_SIZE 8 static void ixgbe_scrub_vfta(struct ixgbe_adapter *adapter, u32 vfta_offset) { struct ixgbe_hw *hw = &adapter->hw; u32 vfta[VFTA_BLOCK_SIZE] = { 0 }; u32 vid_start = vfta_offset * 32; u32 vid_end = vid_start + (VFTA_BLOCK_SIZE * 32); u32 i, vid, word, bits; for (i = IXGBE_VLVF_ENTRIES; --i;) { u32 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); /* pull VLAN ID from VLVF */ vid = vlvf & VLAN_VID_MASK; /* only concern outselves with a certain range */ if (vid < vid_start || vid >= vid_end) continue; if (vlvf) { /* record VLAN ID in VFTA */ vfta[(vid - vid_start) / 32] |= BIT(vid % 32); /* if PF is part of this then continue */ if (test_bit(vid, adapter->active_vlans)) continue; } /* remove PF from the pool */ word = i * 2 + VMDQ_P(0) / 32; bits = ~BIT(VMDQ_P(0) % 32); bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), bits); } /* extract values from active_vlans and write back to VFTA */ for (i = VFTA_BLOCK_SIZE; i--;) { vid = (vfta_offset + i) * 32; word = vid / BITS_PER_LONG; bits = vid % BITS_PER_LONG; vfta[i] |= adapter->active_vlans[word] >> bits; IXGBE_WRITE_REG(hw, IXGBE_VFTA(vfta_offset + i), vfta[i]); } } static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 vlnctrl, i; /* Set VLAN filtering to enabled */ vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); vlnctrl |= IXGBE_VLNCTRL_VFE; IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); if (!(adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) || hw->mac.type == ixgbe_mac_82598EB) return; /* We are not in VLAN promisc, nothing to do */ if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) return; /* Set flag so we don't redo unnecessary work */ adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC; for (i = 0; i < hw->mac.vft_size; i += VFTA_BLOCK_SIZE) ixgbe_scrub_vfta(adapter, i); } static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) { u16 vid = 1; ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0); for_each_set_bit_from(vid, adapter->active_vlans, VLAN_N_VID) ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); } /** * ixgbe_write_mc_addr_list - write multicast addresses to MTA * @netdev: network interface device structure * * Writes multicast address list to the MTA hash table. * Returns: -ENOMEM on failure * 0 on no addresses written * X on writing X addresses to MTA **/ static int ixgbe_write_mc_addr_list(struct net_device *netdev) { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_hw *hw = &adapter->hw; if (!netif_running(netdev)) return 0; if (hw->mac.ops.update_mc_addr_list) hw->mac.ops.update_mc_addr_list(hw, netdev); else return -ENOMEM; #ifdef CONFIG_PCI_IOV ixgbe_restore_vf_multicasts(adapter); #endif return netdev_mc_count(netdev); } #ifdef CONFIG_PCI_IOV void ixgbe_full_sync_mac_table(struct ixgbe_adapter *adapter) { struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; struct ixgbe_hw *hw = &adapter->hw; int i; for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED; if (mac_table->state & IXGBE_MAC_STATE_IN_USE) hw->mac.ops.set_rar(hw, i, mac_table->addr, mac_table->pool, IXGBE_RAH_AV); else hw->mac.ops.clear_rar(hw, i); } } #endif static void ixgbe_sync_mac_table(struct ixgbe_adapter *adapter) { struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; struct ixgbe_hw *hw = &adapter->hw; int i; for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { if (!(mac_table->state & IXGBE_MAC_STATE_MODIFIED)) continue; mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED; if (mac_table->state & IXGBE_MAC_STATE_IN_USE) hw->mac.ops.set_rar(hw, i, mac_table->addr, mac_table->pool, IXGBE_RAH_AV); else hw->mac.ops.clear_rar(hw, i); } } static void ixgbe_flush_sw_mac_table(struct ixgbe_adapter *adapter) { struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; struct ixgbe_hw *hw = &adapter->hw; int i; for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { mac_table->state |= IXGBE_MAC_STATE_MODIFIED; mac_table->state &= ~IXGBE_MAC_STATE_IN_USE; } ixgbe_sync_mac_table(adapter); } static int ixgbe_available_rars(struct ixgbe_adapter *adapter, u16 pool) { struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; struct ixgbe_hw *hw = &adapter->hw; int i, count = 0; for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { /* do not count default RAR as available */ if (mac_table->state & IXGBE_MAC_STATE_DEFAULT) continue; /* only count unused and addresses that belong to us */ if (mac_table->state & IXGBE_MAC_STATE_IN_USE) { if (mac_table->pool != pool) continue; } count++; } return count; } /* this function destroys the first RAR entry */ static void ixgbe_mac_set_default_filter(struct ixgbe_adapter *adapter) { struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; struct ixgbe_hw *hw = &adapter->hw; memcpy(&mac_table->addr, hw->mac.addr, ETH_ALEN); mac_table->pool = VMDQ_P(0); mac_table->state = IXGBE_MAC_STATE_DEFAULT | IXGBE_MAC_STATE_IN_USE; hw->mac.ops.set_rar(hw, 0, mac_table->addr, mac_table->pool, IXGBE_RAH_AV); } int ixgbe_add_mac_filter(struct ixgbe_adapter *adapter, const u8 *addr, u16 pool) { struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; struct ixgbe_hw *hw = &adapter->hw; int i; if (is_zero_ether_addr(addr)) return -EINVAL; for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { if (mac_table->state & IXGBE_MAC_STATE_IN_USE) continue; ether_addr_copy(mac_table->addr, addr); mac_table->pool = pool; mac_table->state |= IXGBE_MAC_STATE_MODIFIED | IXGBE_MAC_STATE_IN_USE; ixgbe_sync_mac_table(adapter); return i; } return -ENOMEM; } int ixgbe_del_mac_filter(struct ixgbe_adapter *adapter, const u8 *addr, u16 pool) { struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; struct ixgbe_hw *hw = &adapter->hw; int i; if (is_zero_ether_addr(addr)) return -EINVAL; /* search table for addr, if found clear IN_USE flag and sync */ for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { /* we can only delete an entry if it is in use */ if (!(mac_table->state & IXGBE_MAC_STATE_IN_USE)) continue; /* we only care about entries that belong to the given pool */ if (mac_table->pool != pool) continue; /* we only care about a specific MAC address */ if (!ether_addr_equal(addr, mac_table->addr)) continue; mac_table->state |= IXGBE_MAC_STATE_MODIFIED; mac_table->state &= ~IXGBE_MAC_STATE_IN_USE; ixgbe_sync_mac_table(adapter); return 0; } return -ENOMEM; } static int ixgbe_uc_sync(struct net_device *netdev, const unsigned char *addr) { struct ixgbe_adapter *adapter = netdev_priv(netdev); int ret; ret = ixgbe_add_mac_filter(adapter, addr, VMDQ_P(0)); return min_t(int, ret, 0); } static int ixgbe_uc_unsync(struct net_device *netdev, const unsigned char *addr) { struct ixgbe_adapter *adapter = netdev_priv(netdev); ixgbe_del_mac_filter(adapter, addr, VMDQ_P(0)); return 0; } /** * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set * @netdev: network interface device structure * * The set_rx_method entry point is called whenever the unicast/multicast * address list or the network interface flags are updated. This routine is * responsible for configuring the hardware for proper unicast, multicast and * promiscuous mode. **/ void ixgbe_set_rx_mode(struct net_device *netdev) { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_hw *hw = &adapter->hw; u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE; netdev_features_t features = netdev->features; int count; /* Check for Promiscuous and All Multicast modes */ fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); /* set all bits that we expect to always be set */ fctrl &= ~IXGBE_FCTRL_SBP; /* disable store-bad-packets */ fctrl |= IXGBE_FCTRL_BAM; fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */ fctrl |= IXGBE_FCTRL_PMCF; /* clear the bits we are changing the status of */ fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); if (netdev->flags & IFF_PROMISC) { hw->addr_ctrl.user_set_promisc = true; fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); vmolr |= IXGBE_VMOLR_MPE; features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; } else { if (netdev->flags & IFF_ALLMULTI) { fctrl |= IXGBE_FCTRL_MPE; vmolr |= IXGBE_VMOLR_MPE; } hw->addr_ctrl.user_set_promisc = false; } /* * Write addresses to available RAR registers, if there is not * sufficient space to store all the addresses then enable * unicast promiscuous mode */ if (__dev_uc_sync(netdev, ixgbe_uc_sync, ixgbe_uc_unsync)) { fctrl |= IXGBE_FCTRL_UPE; vmolr |= IXGBE_VMOLR_ROPE; } /* Write addresses to the MTA, if the attempt fails * then we should just turn on promiscuous mode so * that we can at least receive multicast traffic */ count = ixgbe_write_mc_addr_list(netdev); if (count < 0) { fctrl |= IXGBE_FCTRL_MPE; vmolr |= IXGBE_VMOLR_MPE; } else if (count) { vmolr |= IXGBE_VMOLR_ROMPE; } if (hw->mac.type != ixgbe_mac_82598EB) { vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(VMDQ_P(0))) & ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE | IXGBE_VMOLR_ROPE); IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(0)), vmolr); } /* This is useful for sniffing bad packets. */ if (features & NETIF_F_RXALL) { /* UPE and MPE will be handled by normal PROMISC logic * in e1000e_set_rx_mode */ fctrl |= (IXGBE_FCTRL_SBP | /* Receive bad packets */ IXGBE_FCTRL_BAM | /* RX All Bcast Pkts */ IXGBE_FCTRL_PMCF); /* RX All MAC Ctrl Pkts */ fctrl &= ~(IXGBE_FCTRL_DPF); /* NOTE: VLAN filtering is disabled by setting PROMISC */ } IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); if (features & NETIF_F_HW_VLAN_CTAG_RX) ixgbe_vlan_strip_enable(adapter); else ixgbe_vlan_strip_disable(adapter); if (features & NETIF_F_HW_VLAN_CTAG_FILTER) ixgbe_vlan_promisc_disable(adapter); else ixgbe_vlan_promisc_enable(adapter); } static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter) { int q_idx; for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) napi_enable(&adapter->q_vector[q_idx]->napi); } static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) { int q_idx; for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) napi_disable(&adapter->q_vector[q_idx]->napi); } static void ixgbe_clear_udp_tunnel_port(struct ixgbe_adapter *adapter, u32 mask) { struct ixgbe_hw *hw = &adapter->hw; u32 vxlanctrl; if (!(adapter->flags & (IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE | IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE))) return; vxlanctrl = IXGBE_READ_REG(hw, IXGBE_VXLANCTRL) & ~mask; IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, vxlanctrl); if (mask & IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK) adapter->vxlan_port = 0; if (mask & IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK) adapter->geneve_port = 0; } #ifdef CONFIG_IXGBE_DCB /** * ixgbe_configure_dcb - Configure DCB hardware * @adapter: ixgbe adapter struct * * This is called by the driver on open to configure the DCB hardware. * This is also called by the gennetlink interface when reconfiguring * the DCB state. */ static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN; if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) { if (hw->mac.type == ixgbe_mac_82598EB) netif_set_gso_max_size(adapter->netdev, 65536); return; } if (hw->mac.type == ixgbe_mac_82598EB) netif_set_gso_max_size(adapter->netdev, 32768); #ifdef IXGBE_FCOE if (adapter->netdev->features & NETIF_F_FCOE_MTU) max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE); #endif /* reconfigure the hardware */ if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) { ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, DCB_TX_CONFIG); ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, DCB_RX_CONFIG); ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg); } else if (adapter->ixgbe_ieee_ets && adapter->ixgbe_ieee_pfc) { ixgbe_dcb_hw_ets(&adapter->hw, adapter->ixgbe_ieee_ets, max_frame); ixgbe_dcb_hw_pfc_config(&adapter->hw, adapter->ixgbe_ieee_pfc->pfc_en, adapter->ixgbe_ieee_ets->prio_tc); } /* Enable RSS Hash per TC */ if (hw->mac.type != ixgbe_mac_82598EB) { u32 msb = 0; u16 rss_i = adapter->ring_feature[RING_F_RSS].indices - 1; while (rss_i) { msb++; rss_i >>= 1; } /* write msb to all 8 TCs in one write */ IXGBE_WRITE_REG(hw, IXGBE_RQTC, msb * 0x11111111); } } #endif /* Additional bittime to account for IXGBE framing */ #define IXGBE_ETH_FRAMING 20 /** * ixgbe_hpbthresh - calculate high water mark for flow control * * @adapter: board private structure to calculate for * @pb: packet buffer to calculate */ static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb) { struct ixgbe_hw *hw = &adapter->hw; struct net_device *dev = adapter->netdev; int link, tc, kb, marker; u32 dv_id, rx_pba; /* Calculate max LAN frame size */ tc = link = dev->mtu + ETH_HLEN + ETH_FCS_LEN + IXGBE_ETH_FRAMING; #ifdef IXGBE_FCOE /* FCoE traffic class uses FCOE jumbo frames */ if ((dev->features & NETIF_F_FCOE_MTU) && (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) && (pb == ixgbe_fcoe_get_tc(adapter))) tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; #endif /* Calculate delay value for device */ switch (hw->mac.type) { case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: dv_id = IXGBE_DV_X540(link, tc); break; default: dv_id = IXGBE_DV(link, tc); break; } /* Loopback switch introduces additional latency */ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) dv_id += IXGBE_B2BT(tc); /* Delay value is calculated in bit times convert to KB */ kb = IXGBE_BT2KB(dv_id); rx_pba = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(pb)) >> 10; marker = rx_pba - kb; /* It is possible that the packet buffer is not large enough * to provide required headroom. In this case throw an error * to user and a do the best we can. */ if (marker < 0) { e_warn(drv, "Packet Buffer(%i) can not provide enough" "headroom to support flow control." "Decrease MTU or number of traffic classes\n", pb); marker = tc + 1; } return marker; } /** * ixgbe_lpbthresh - calculate low water mark for for flow control * * @adapter: board private structure to calculate for * @pb: packet buffer to calculate */ static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter, int pb) { struct ixgbe_hw *hw = &adapter->hw; struct net_device *dev = adapter->netdev; int tc; u32 dv_id; /* Calculate max LAN frame size */ tc = dev->mtu + ETH_HLEN + ETH_FCS_LEN; #ifdef IXGBE_FCOE /* FCoE traffic class uses FCOE jumbo frames */ if ((dev->features & NETIF_F_FCOE_MTU) && (tc < IXGBE_FCOE_JUMBO_FRAME_SIZE) && (pb == netdev_get_prio_tc_map(dev, adapter->fcoe.up))) tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; #endif /* Calculate delay value for device */ switch (hw->mac.type) { case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: dv_id = IXGBE_LOW_DV_X540(tc); break; default: dv_id = IXGBE_LOW_DV(tc); break; } /* Delay value is calculated in bit times convert to KB */ return IXGBE_BT2KB(dv_id); } /* * ixgbe_pbthresh_setup - calculate and setup high low water marks */ static void ixgbe_pbthresh_setup(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; int num_tc = adapter->hw_tcs; int i; if (!num_tc) num_tc = 1; for (i = 0; i < num_tc; i++) { hw->fc.high_water[i] = ixgbe_hpbthresh(adapter, i); hw->fc.low_water[i] = ixgbe_lpbthresh(adapter, i); /* Low water marks must not be larger than high water marks */ if (hw->fc.low_water[i] > hw->fc.high_water[i]) hw->fc.low_water[i] = 0; } for (; i < MAX_TRAFFIC_CLASS; i++) hw->fc.high_water[i] = 0; } static void ixgbe_configure_pb(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; int hdrm; u8 tc = adapter->hw_tcs; if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE || adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) hdrm = 32 << adapter->fdir_pballoc; else hdrm = 0; hw->mac.ops.set_rxpba(hw, tc, hdrm, PBA_STRATEGY_EQUAL); ixgbe_pbthresh_setup(adapter); } static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; struct hlist_node *node2; struct ixgbe_fdir_filter *filter; u64 action; spin_lock(&adapter->fdir_perfect_lock); if (!hlist_empty(&adapter->fdir_filter_list)) ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask); hlist_for_each_entry_safe(filter, node2, &adapter->fdir_filter_list, fdir_node) { action = filter->action; if (action != IXGBE_FDIR_DROP_QUEUE && action != 0) action = (action >> ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF) - 1; ixgbe_fdir_write_perfect_filter_82599(hw, &filter->filter, filter->sw_idx, (action == IXGBE_FDIR_DROP_QUEUE) ? IXGBE_FDIR_DROP_QUEUE : adapter->rx_ring[action]->reg_idx); } spin_unlock(&adapter->fdir_perfect_lock); } /** * ixgbe_clean_rx_ring - Free Rx Buffers per Queue * @rx_ring: ring to free buffers from **/ static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring) { u16 i = rx_ring->next_to_clean; struct ixgbe_rx_buffer *rx_buffer = &rx_ring->rx_buffer_info[i]; if (rx_ring->xsk_umem) { ixgbe_xsk_clean_rx_ring(rx_ring); goto skip_free; } /* Free all the Rx ring sk_buffs */ while (i != rx_ring->next_to_alloc) { if (rx_buffer->skb) { struct sk_buff *skb = rx_buffer->skb; if (IXGBE_CB(skb)->page_released) dma_unmap_page_attrs(rx_ring->dev, IXGBE_CB(skb)->dma, ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE, IXGBE_RX_DMA_ATTR); dev_kfree_skb(skb); } /* Invalidate cache lines that may have been written to by * device so that we avoid corrupting memory. */ dma_sync_single_range_for_cpu(rx_ring->dev, rx_buffer->dma, rx_buffer->page_offset, ixgbe_rx_bufsz(rx_ring), DMA_FROM_DEVICE); /* free resources associated with mapping */ dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, ixgbe_rx_pg_size(rx_ring), DMA_FROM_DEVICE, IXGBE_RX_DMA_ATTR); __page_frag_cache_drain(rx_buffer->page, rx_buffer->pagecnt_bias); i++; rx_buffer++; if (i == rx_ring->count) { i = 0; rx_buffer = rx_ring->rx_buffer_info; } } skip_free: rx_ring->next_to_alloc = 0; rx_ring->next_to_clean = 0; rx_ring->next_to_use = 0; } static int ixgbe_fwd_ring_up(struct ixgbe_adapter *adapter, struct ixgbe_fwd_adapter *accel) { u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; int num_tc = netdev_get_num_tc(adapter->netdev); struct net_device *vdev = accel->netdev; int i, baseq, err; baseq = accel->pool * adapter->num_rx_queues_per_pool; netdev_dbg(vdev, "pool %i:%i queues %i:%i\n", accel->pool, adapter->num_rx_pools, baseq, baseq + adapter->num_rx_queues_per_pool); accel->rx_base_queue = baseq; accel->tx_base_queue = baseq; /* record configuration for macvlan interface in vdev */ for (i = 0; i < num_tc; i++) netdev_bind_sb_channel_queue(adapter->netdev, vdev, i, rss_i, baseq + (rss_i * i)); for (i = 0; i < adapter->num_rx_queues_per_pool; i++) adapter->rx_ring[baseq + i]->netdev = vdev; /* Guarantee all rings are updated before we update the * MAC address filter. */ wmb(); /* ixgbe_add_mac_filter will return an index if it succeeds, so we * need to only treat it as an error value if it is negative. */ err = ixgbe_add_mac_filter(adapter, vdev->dev_addr, VMDQ_P(accel->pool)); if (err >= 0) return 0; /* if we cannot add the MAC rule then disable the offload */ macvlan_release_l2fw_offload(vdev); for (i = 0; i < adapter->num_rx_queues_per_pool; i++) adapter->rx_ring[baseq + i]->netdev = NULL; netdev_err(vdev, "L2FW offload disabled due to L2 filter error\n"); /* unbind the queues and drop the subordinate channel config */ netdev_unbind_sb_channel(adapter->netdev, vdev); netdev_set_sb_channel(vdev, 0); clear_bit(accel->pool, adapter->fwd_bitmask); kfree(accel); return err; } static int ixgbe_macvlan_up(struct net_device *vdev, void *data) { struct ixgbe_adapter *adapter = data; struct ixgbe_fwd_adapter *accel; if (!netif_is_macvlan(vdev)) return 0; accel = macvlan_accel_priv(vdev); if (!accel) return 0; ixgbe_fwd_ring_up(adapter, accel); return 0; } static void ixgbe_configure_dfwd(struct ixgbe_adapter *adapter) { netdev_walk_all_upper_dev_rcu(adapter->netdev, ixgbe_macvlan_up, adapter); } static void ixgbe_configure(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; ixgbe_configure_pb(adapter); #ifdef CONFIG_IXGBE_DCB ixgbe_configure_dcb(adapter); #endif /* * We must restore virtualization before VLANs or else * the VLVF registers will not be populated */ ixgbe_configure_virtualization(adapter); ixgbe_set_rx_mode(adapter->netdev); ixgbe_restore_vlan(adapter); ixgbe_ipsec_restore(adapter); switch (hw->mac.type) { case ixgbe_mac_82599EB: case ixgbe_mac_X540: hw->mac.ops.disable_rx_buff(hw); break; default: break; } if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { ixgbe_init_fdir_signature_82599(&adapter->hw, adapter->fdir_pballoc); } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) { ixgbe_init_fdir_perfect_82599(&adapter->hw, adapter->fdir_pballoc); ixgbe_fdir_filter_restore(adapter); } switch (hw->mac.type) { case ixgbe_mac_82599EB: case ixgbe_mac_X540: hw->mac.ops.enable_rx_buff(hw); break; default: break; } #ifdef CONFIG_IXGBE_DCA /* configure DCA */ if (adapter->flags & IXGBE_FLAG_DCA_CAPABLE) ixgbe_setup_dca(adapter); #endif /* CONFIG_IXGBE_DCA */ #ifdef IXGBE_FCOE /* configure FCoE L2 filters, redirection table, and Rx control */ ixgbe_configure_fcoe(adapter); #endif /* IXGBE_FCOE */ ixgbe_configure_tx(adapter); ixgbe_configure_rx(adapter); ixgbe_configure_dfwd(adapter); } /** * ixgbe_sfp_link_config - set up SFP+ link * @adapter: pointer to private adapter struct **/ static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter) { /* * We are assuming the worst case scenario here, and that * is that an SFP was inserted/removed after the reset * but before SFP detection was enabled. As such the best * solution is to just start searching as soon as we start */ if (adapter->hw.mac.type == ixgbe_mac_82598EB) adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; adapter->sfp_poll_time = 0; } /** * ixgbe_non_sfp_link_config - set up non-SFP+ link * @hw: pointer to private hardware struct * * Returns 0 on success, negative on failure **/ static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw) { u32 speed; bool autoneg, link_up = false; int ret = IXGBE_ERR_LINK_SETUP; if (hw->mac.ops.check_link) ret = hw->mac.ops.check_link(hw, &speed, &link_up, false); if (ret) return ret; speed = hw->phy.autoneg_advertised; if ((!speed) && (hw->mac.ops.get_link_capabilities)) ret = hw->mac.ops.get_link_capabilities(hw, &speed, &autoneg); if (ret) return ret; if (hw->mac.ops.setup_link) ret = hw->mac.ops.setup_link(hw, speed, link_up); return ret; } static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 gpie = 0; if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT | IXGBE_GPIE_OCD; gpie |= IXGBE_GPIE_EIAME; /* * use EIAM to auto-mask when MSI-X interrupt is asserted * this saves a register write for every interrupt */ switch (hw->mac.type) { case ixgbe_mac_82598EB: IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: default: IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF); IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF); break; } } else { /* legacy interrupts, use EIAM to auto-mask when reading EICR, * specifically only auto mask tx and rx interrupts */ IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); } /* XXX: to interrupt immediately for EICS writes, enable this */ /* gpie |= IXGBE_GPIE_EIMEN; */ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { gpie &= ~IXGBE_GPIE_VTMODE_MASK; switch (adapter->ring_feature[RING_F_VMDQ].mask) { case IXGBE_82599_VMDQ_8Q_MASK: gpie |= IXGBE_GPIE_VTMODE_16; break; case IXGBE_82599_VMDQ_4Q_MASK: gpie |= IXGBE_GPIE_VTMODE_32; break; default: gpie |= IXGBE_GPIE_VTMODE_64; break; } } /* Enable Thermal over heat sensor interrupt */ if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) { switch (adapter->hw.mac.type) { case ixgbe_mac_82599EB: gpie |= IXGBE_SDP0_GPIEN_8259X; break; default: break; } } /* Enable fan failure interrupt */ if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) gpie |= IXGBE_SDP1_GPIEN(hw); switch (hw->mac.type) { case ixgbe_mac_82599EB: gpie |= IXGBE_SDP1_GPIEN_8259X | IXGBE_SDP2_GPIEN_8259X; break; case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: gpie |= IXGBE_SDP0_GPIEN_X540; break; default: break; } IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); } static void ixgbe_up_complete(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; int err; u32 ctrl_ext; ixgbe_get_hw_control(adapter); ixgbe_setup_gpie(adapter); if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) ixgbe_configure_msix(adapter); else ixgbe_configure_msi_and_legacy(adapter); /* enable the optics for 82599 SFP+ fiber */ if (hw->mac.ops.enable_tx_laser) hw->mac.ops.enable_tx_laser(hw); if (hw->phy.ops.set_phy_power) hw->phy.ops.set_phy_power(hw, true); smp_mb__before_atomic(); clear_bit(__IXGBE_DOWN, &adapter->state); ixgbe_napi_enable_all(adapter); if (ixgbe_is_sfp(hw)) { ixgbe_sfp_link_config(adapter); } else { err = ixgbe_non_sfp_link_config(hw); if (err) e_err(probe, "link_config FAILED %d\n", err); } /* clear any pending interrupts, may auto mask */ IXGBE_READ_REG(hw, IXGBE_EICR); ixgbe_irq_enable(adapter, true, true); /* * If this adapter has a fan, check to see if we had a failure * before we enabled the interrupt. */ if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); if (esdp & IXGBE_ESDP_SDP1) e_crit(drv, "Fan has stopped, replace the adapter\n"); } /* bring the link up in the watchdog, this could race with our first * link up interrupt but shouldn't be a problem */ adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; adapter->link_check_timeout = jiffies; mod_timer(&adapter->service_timer, jiffies); /* Set PF Reset Done bit so PF/VF Mail Ops can work */ ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT); ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD; IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext); } void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) { WARN_ON(in_interrupt()); /* put off any impending NetWatchDogTimeout */ netif_trans_update(adapter->netdev); while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) usleep_range(1000, 2000); if (adapter->hw.phy.type == ixgbe_phy_fw) ixgbe_watchdog_link_is_down(adapter); ixgbe_down(adapter); /* * If SR-IOV enabled then wait a bit before bringing the adapter * back up to give the VFs time to respond to the reset. The * two second wait is based upon the watchdog timer cycle in * the VF driver. */ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) msleep(2000); ixgbe_up(adapter); clear_bit(__IXGBE_RESETTING, &adapter->state); } void ixgbe_up(struct ixgbe_adapter *adapter) { /* hardware has been reset, we need to reload some things */ ixgbe_configure(adapter); ixgbe_up_complete(adapter); } static unsigned long ixgbe_get_completion_timeout(struct ixgbe_adapter *adapter) { u16 devctl2; pcie_capability_read_word(adapter->pdev, PCI_EXP_DEVCTL2, &devctl2); switch (devctl2 & IXGBE_PCIDEVCTRL2_TIMEO_MASK) { case IXGBE_PCIDEVCTRL2_17_34s: case IXGBE_PCIDEVCTRL2_4_8s: /* For now we cap the upper limit on delay to 2 seconds * as we end up going up to 34 seconds of delay in worst * case timeout value. */ case IXGBE_PCIDEVCTRL2_1_2s: return 2000000ul; /* 2.0 s */ case IXGBE_PCIDEVCTRL2_260_520ms: return 520000ul; /* 520 ms */ case IXGBE_PCIDEVCTRL2_65_130ms: return 130000ul; /* 130 ms */ case IXGBE_PCIDEVCTRL2_16_32ms: return 32000ul; /* 32 ms */ case IXGBE_PCIDEVCTRL2_1_2ms: return 2000ul; /* 2 ms */ case IXGBE_PCIDEVCTRL2_50_100us: return 100ul; /* 100 us */ case IXGBE_PCIDEVCTRL2_16_32ms_def: return 32000ul; /* 32 ms */ default: break; } /* We shouldn't need to hit this path, but just in case default as * though completion timeout is not supported and support 32ms. */ return 32000ul; } void ixgbe_disable_rx(struct ixgbe_adapter *adapter) { unsigned long wait_delay, delay_interval; struct ixgbe_hw *hw = &adapter->hw; int i, wait_loop; u32 rxdctl; /* disable receives */ hw->mac.ops.disable_rx(hw); if (ixgbe_removed(hw->hw_addr)) return; /* disable all enabled Rx queues */ for (i = 0; i < adapter->num_rx_queues; i++) { struct ixgbe_ring *ring = adapter->rx_ring[i]; u8 reg_idx = ring->reg_idx; rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); rxdctl &= ~IXGBE_RXDCTL_ENABLE; rxdctl |= IXGBE_RXDCTL_SWFLSH; /* write value back with RXDCTL.ENABLE bit cleared */ IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); } /* RXDCTL.EN may not change on 82598 if link is down, so skip it */ if (hw->mac.type == ixgbe_mac_82598EB && !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) return; /* Determine our minimum delay interval. We will increase this value * with each subsequent test. This way if the device returns quickly * we should spend as little time as possible waiting, however as * the time increases we will wait for larger periods of time. * * The trick here is that we increase the interval using the * following pattern: 1x 3x 5x 7x 9x 11x 13x 15x 17x 19x. The result * of that wait is that it totals up to 100x whatever interval we * choose. Since our minimum wait is 100us we can just divide the * total timeout by 100 to get our minimum delay interval. */ delay_interval = ixgbe_get_completion_timeout(adapter) / 100; wait_loop = IXGBE_MAX_RX_DESC_POLL; wait_delay = delay_interval; while (wait_loop--) { usleep_range(wait_delay, wait_delay + 10); wait_delay += delay_interval * 2; rxdctl = 0; /* OR together the reading of all the active RXDCTL registers, * and then test the result. We need the disable to complete * before we start freeing the memory and invalidating the * DMA mappings. */ for (i = 0; i < adapter->num_rx_queues; i++) { struct ixgbe_ring *ring = adapter->rx_ring[i]; u8 reg_idx = ring->reg_idx; rxdctl |= IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); } if (!(rxdctl & IXGBE_RXDCTL_ENABLE)) return; } e_err(drv, "RXDCTL.ENABLE for one or more queues not cleared within the polling period\n"); } void ixgbe_disable_tx(struct ixgbe_adapter *adapter) { unsigned long wait_delay, delay_interval; struct ixgbe_hw *hw = &adapter->hw; int i, wait_loop; u32 txdctl; if (ixgbe_removed(hw->hw_addr)) return; /* disable all enabled Tx queues */ for (i = 0; i < adapter->num_tx_queues; i++) { struct ixgbe_ring *ring = adapter->tx_ring[i]; u8 reg_idx = ring->reg_idx; IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); } /* disable all enabled XDP Tx queues */ for (i = 0; i < adapter->num_xdp_queues; i++) { struct ixgbe_ring *ring = adapter->xdp_ring[i]; u8 reg_idx = ring->reg_idx; IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); } /* If the link is not up there shouldn't be much in the way of * pending transactions. Those that are left will be flushed out * when the reset logic goes through the flush sequence to clean out * the pending Tx transactions. */ if (!(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) goto dma_engine_disable; /* Determine our minimum delay interval. We will increase this value * with each subsequent test. This way if the device returns quickly * we should spend as little time as possible waiting, however as * the time increases we will wait for larger periods of time. * * The trick here is that we increase the interval using the * following pattern: 1x 3x 5x 7x 9x 11x 13x 15x 17x 19x. The result * of that wait is that it totals up to 100x whatever interval we * choose. Since our minimum wait is 100us we can just divide the * total timeout by 100 to get our minimum delay interval. */ delay_interval = ixgbe_get_completion_timeout(adapter) / 100; wait_loop = IXGBE_MAX_RX_DESC_POLL; wait_delay = delay_interval; while (wait_loop--) { usleep_range(wait_delay, wait_delay + 10); wait_delay += delay_interval * 2; txdctl = 0; /* OR together the reading of all the active TXDCTL registers, * and then test the result. We need the disable to complete * before we start freeing the memory and invalidating the * DMA mappings. */ for (i = 0; i < adapter->num_tx_queues; i++) { struct ixgbe_ring *ring = adapter->tx_ring[i]; u8 reg_idx = ring->reg_idx; txdctl |= IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); } for (i = 0; i < adapter->num_xdp_queues; i++) { struct ixgbe_ring *ring = adapter->xdp_ring[i]; u8 reg_idx = ring->reg_idx; txdctl |= IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); } if (!(txdctl & IXGBE_TXDCTL_ENABLE)) goto dma_engine_disable; } e_err(drv, "TXDCTL.ENABLE for one or more queues not cleared within the polling period\n"); dma_engine_disable: /* Disable the Tx DMA engine on 82599 and later MAC */ switch (hw->mac.type) { case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) & ~IXGBE_DMATXCTL_TE)); /* fall through */ default: break; } } void ixgbe_reset(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; struct net_device *netdev = adapter->netdev; int err; if (ixgbe_removed(hw->hw_addr)) return; /* lock SFP init bit to prevent race conditions with the watchdog */ while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) usleep_range(1000, 2000); /* clear all SFP and link config related flags while holding SFP_INIT */ adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP | IXGBE_FLAG2_SFP_NEEDS_RESET); adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; err = hw->mac.ops.init_hw(hw); switch (err) { case 0: case IXGBE_ERR_SFP_NOT_PRESENT: case IXGBE_ERR_SFP_NOT_SUPPORTED: break; case IXGBE_ERR_MASTER_REQUESTS_PENDING: e_dev_err("master disable timed out\n"); break; case IXGBE_ERR_EEPROM_VERSION: /* We are running on a pre-production device, log a warning */ e_dev_warn("This device is a pre-production adapter/LOM. " "Please be aware there may be issues associated with " "your hardware. If you are experiencing problems " "please contact your Intel or hardware " "representative who provided you with this " "hardware.\n"); break; default: e_dev_err("Hardware Error: %d\n", err); } clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); /* flush entries out of MAC table */ ixgbe_flush_sw_mac_table(adapter); __dev_uc_unsync(netdev, NULL); /* do not flush user set addresses */ ixgbe_mac_set_default_filter(adapter); /* update SAN MAC vmdq pool selection */ if (hw->mac.san_mac_rar_index) hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0)); if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) ixgbe_ptp_reset(adapter); if (hw->phy.ops.set_phy_power) { if (!netif_running(adapter->netdev) && !adapter->wol) hw->phy.ops.set_phy_power(hw, false); else hw->phy.ops.set_phy_power(hw, true); } } /** * ixgbe_clean_tx_ring - Free Tx Buffers * @tx_ring: ring to be cleaned **/ static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring) { u16 i = tx_ring->next_to_clean; struct ixgbe_tx_buffer *tx_buffer = &tx_ring->tx_buffer_info[i]; if (tx_ring->xsk_umem) { ixgbe_xsk_clean_tx_ring(tx_ring); goto out; } while (i != tx_ring->next_to_use) { union ixgbe_adv_tx_desc *eop_desc, *tx_desc; /* Free all the Tx ring sk_buffs */ if (ring_is_xdp(tx_ring)) xdp_return_frame(tx_buffer->xdpf); else dev_kfree_skb_any(tx_buffer->skb); /* unmap skb header data */ dma_unmap_single(tx_ring->dev, dma_unmap_addr(tx_buffer, dma), dma_unmap_len(tx_buffer, len), DMA_TO_DEVICE); /* check for eop_desc to determine the end of the packet */ eop_desc = tx_buffer->next_to_watch; tx_desc = IXGBE_TX_DESC(tx_ring, i); /* unmap remaining buffers */ while (tx_desc != eop_desc) { tx_buffer++; tx_desc++; i++; if (unlikely(i == tx_ring->count)) { i = 0; tx_buffer = tx_ring->tx_buffer_info; tx_desc = IXGBE_TX_DESC(tx_ring, 0); } /* unmap any remaining paged data */ if (dma_unmap_len(tx_buffer, len)) dma_unmap_page(tx_ring->dev, dma_unmap_addr(tx_buffer, dma), dma_unmap_len(tx_buffer, len), DMA_TO_DEVICE); } /* move us one more past the eop_desc for start of next pkt */ tx_buffer++; i++; if (unlikely(i == tx_ring->count)) { i = 0; tx_buffer = tx_ring->tx_buffer_info; } } /* reset BQL for queue */ if (!ring_is_xdp(tx_ring)) netdev_tx_reset_queue(txring_txq(tx_ring)); out: /* reset next_to_use and next_to_clean */ tx_ring->next_to_use = 0; tx_ring->next_to_clean = 0; } /** * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues * @adapter: board private structure **/ static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) { int i; for (i = 0; i < adapter->num_rx_queues; i++) ixgbe_clean_rx_ring(adapter->rx_ring[i]); } /** * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues * @adapter: board private structure **/ static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) { int i; for (i = 0; i < adapter->num_tx_queues; i++) ixgbe_clean_tx_ring(adapter->tx_ring[i]); for (i = 0; i < adapter->num_xdp_queues; i++) ixgbe_clean_tx_ring(adapter->xdp_ring[i]); } static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter) { struct hlist_node *node2; struct ixgbe_fdir_filter *filter; spin_lock(&adapter->fdir_perfect_lock); hlist_for_each_entry_safe(filter, node2, &adapter->fdir_filter_list, fdir_node) { hlist_del(&filter->fdir_node); kfree(filter); } adapter->fdir_filter_count = 0; spin_unlock(&adapter->fdir_perfect_lock); } void ixgbe_down(struct ixgbe_adapter *adapter) { struct net_device *netdev = adapter->netdev; struct ixgbe_hw *hw = &adapter->hw; int i; /* signal that we are down to the interrupt handler */ if (test_and_set_bit(__IXGBE_DOWN, &adapter->state)) return; /* do nothing if already down */ /* Shut off incoming Tx traffic */ netif_tx_stop_all_queues(netdev); /* call carrier off first to avoid false dev_watchdog timeouts */ netif_carrier_off(netdev); netif_tx_disable(netdev); /* Disable Rx */ ixgbe_disable_rx(adapter); /* synchronize_rcu() needed for pending XDP buffers to drain */ if (adapter->xdp_ring[0]) synchronize_rcu(); ixgbe_irq_disable(adapter); ixgbe_napi_disable_all(adapter); clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state); adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; del_timer_sync(&adapter->service_timer); if (adapter->num_vfs) { /* Clear EITR Select mapping */ IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0); /* Mark all the VFs as inactive */ for (i = 0 ; i < adapter->num_vfs; i++) adapter->vfinfo[i].clear_to_send = false; /* ping all the active vfs to let them know we are going down */ ixgbe_ping_all_vfs(adapter); /* Disable all VFTE/VFRE TX/RX */ ixgbe_disable_tx_rx(adapter); } /* disable transmits in the hardware now that interrupts are off */ ixgbe_disable_tx(adapter); if (!pci_channel_offline(adapter->pdev)) ixgbe_reset(adapter); /* power down the optics for 82599 SFP+ fiber */ if (hw->mac.ops.disable_tx_laser) hw->mac.ops.disable_tx_laser(hw); ixgbe_clean_all_tx_rings(adapter); ixgbe_clean_all_rx_rings(adapter); } /** * ixgbe_eee_capable - helper function to determine EEE support on X550 * @adapter: board private structure */ static void ixgbe_set_eee_capable(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; switch (hw->device_id) { case IXGBE_DEV_ID_X550EM_A_1G_T: case IXGBE_DEV_ID_X550EM_A_1G_T_L: if (!hw->phy.eee_speeds_supported) break; adapter->flags2 |= IXGBE_FLAG2_EEE_CAPABLE; if (!hw->phy.eee_speeds_advertised) break; adapter->flags2 |= IXGBE_FLAG2_EEE_ENABLED; break; default: adapter->flags2 &= ~IXGBE_FLAG2_EEE_CAPABLE; adapter->flags2 &= ~IXGBE_FLAG2_EEE_ENABLED; break; } } /** * ixgbe_tx_timeout - Respond to a Tx Hang * @netdev: network interface device structure **/ static void ixgbe_tx_timeout(struct net_device *netdev) { struct ixgbe_adapter *adapter = netdev_priv(netdev); /* Do the reset outside of interrupt context */ ixgbe_tx_timeout_reset(adapter); } #ifdef CONFIG_IXGBE_DCB static void ixgbe_init_dcb(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; struct tc_configuration *tc; int j; switch (hw->mac.type) { case ixgbe_mac_82598EB: case ixgbe_mac_82599EB: adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; break; case ixgbe_mac_X540: case ixgbe_mac_X550: adapter->dcb_cfg.num_tcs.pg_tcs = X540_TRAFFIC_CLASS; adapter->dcb_cfg.num_tcs.pfc_tcs = X540_TRAFFIC_CLASS; break; case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: default: adapter->dcb_cfg.num_tcs.pg_tcs = DEF_TRAFFIC_CLASS; adapter->dcb_cfg.num_tcs.pfc_tcs = DEF_TRAFFIC_CLASS; break; } /* Configure DCB traffic classes */ for (j = 0; j < MAX_TRAFFIC_CLASS; j++) { tc = &adapter->dcb_cfg.tc_config[j]; tc->path[DCB_TX_CONFIG].bwg_id = 0; tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1); tc->path[DCB_RX_CONFIG].bwg_id = 0; tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1); tc->dcb_pfc = pfc_disabled; } /* Initialize default user to priority mapping, UPx->TC0 */ tc = &adapter->dcb_cfg.tc_config[0]; tc->path[DCB_TX_CONFIG].up_to_tc_bitmap = 0xFF; tc->path[DCB_RX_CONFIG].up_to_tc_bitmap = 0xFF; adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100; adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100; adapter->dcb_cfg.pfc_mode_enable = false; adapter->dcb_set_bitmap = 0x00; if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE) adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE; memcpy(&adapter->temp_dcb_cfg, &adapter->dcb_cfg, sizeof(adapter->temp_dcb_cfg)); } #endif /** * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) * @adapter: board private structure to initialize * @ii: pointer to ixgbe_info for device * * ixgbe_sw_init initializes the Adapter private data structure. * Fields are initialized based on PCI device information and * OS network device settings (MTU size). **/ static int ixgbe_sw_init(struct ixgbe_adapter *adapter, const struct ixgbe_info *ii) { struct ixgbe_hw *hw = &adapter->hw; struct pci_dev *pdev = adapter->pdev; unsigned int rss, fdir; u32 fwsm; int i; /* PCI config space info */ hw->vendor_id = pdev->vendor; hw->device_id = pdev->device; hw->revision_id = pdev->revision; hw->subsystem_vendor_id = pdev->subsystem_vendor; hw->subsystem_device_id = pdev->subsystem_device; /* get_invariants needs the device IDs */ ii->get_invariants(hw); /* Set common capability flags and settings */ rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus()); adapter->ring_feature[RING_F_RSS].limit = rss; adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE; adapter->max_q_vectors = MAX_Q_VECTORS_82599; adapter->atr_sample_rate = 20; fdir = min_t(int, IXGBE_MAX_FDIR_INDICES, num_online_cpus()); adapter->ring_feature[RING_F_FDIR].limit = fdir; adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K; adapter->ring_feature[RING_F_VMDQ].limit = 1; #ifdef CONFIG_IXGBE_DCA adapter->flags |= IXGBE_FLAG_DCA_CAPABLE; #endif #ifdef CONFIG_IXGBE_DCB adapter->flags |= IXGBE_FLAG_DCB_CAPABLE; adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; #endif #ifdef IXGBE_FCOE adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE; adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; #ifdef CONFIG_IXGBE_DCB /* Default traffic class to use for FCoE */ adapter->fcoe.up = IXGBE_FCOE_DEFTC; #endif /* CONFIG_IXGBE_DCB */ #endif /* IXGBE_FCOE */ /* initialize static ixgbe jump table entries */ adapter->jump_tables[0] = kzalloc(sizeof(*adapter->jump_tables[0]), GFP_KERNEL); if (!adapter->jump_tables[0]) return -ENOMEM; adapter->jump_tables[0]->mat = ixgbe_ipv4_fields; for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) adapter->jump_tables[i] = NULL; adapter->mac_table = kcalloc(hw->mac.num_rar_entries, sizeof(struct ixgbe_mac_addr), GFP_KERNEL); if (!adapter->mac_table) return -ENOMEM; if (ixgbe_init_rss_key(adapter)) return -ENOMEM; /* Set MAC specific capability flags and exceptions */ switch (hw->mac.type) { case ixgbe_mac_82598EB: adapter->flags2 &= ~IXGBE_FLAG2_RSC_CAPABLE; if (hw->device_id == IXGBE_DEV_ID_82598AT) adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE; adapter->max_q_vectors = MAX_Q_VECTORS_82598; adapter->ring_feature[RING_F_FDIR].limit = 0; adapter->atr_sample_rate = 0; adapter->fdir_pballoc = 0; #ifdef IXGBE_FCOE adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; #ifdef CONFIG_IXGBE_DCB adapter->fcoe.up = 0; #endif /* IXGBE_DCB */ #endif /* IXGBE_FCOE */ break; case ixgbe_mac_82599EB: if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM) adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; break; case ixgbe_mac_X540: fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw)); if (fwsm & IXGBE_FWSM_TS_ENABLED) adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; break; case ixgbe_mac_x550em_a: adapter->flags |= IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE; switch (hw->device_id) { case IXGBE_DEV_ID_X550EM_A_1G_T: case IXGBE_DEV_ID_X550EM_A_1G_T_L: adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; break; default: break; } /* fall through */ case ixgbe_mac_X550EM_x: #ifdef CONFIG_IXGBE_DCB adapter->flags &= ~IXGBE_FLAG_DCB_CAPABLE; #endif #ifdef IXGBE_FCOE adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; #ifdef CONFIG_IXGBE_DCB adapter->fcoe.up = 0; #endif /* IXGBE_DCB */ #endif /* IXGBE_FCOE */ /* Fall Through */ case ixgbe_mac_X550: if (hw->mac.type == ixgbe_mac_X550) adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; #ifdef CONFIG_IXGBE_DCA adapter->flags &= ~IXGBE_FLAG_DCA_CAPABLE; #endif adapter->flags |= IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE; break; default: break; } #ifdef IXGBE_FCOE /* FCoE support exists, always init the FCoE lock */ spin_lock_init(&adapter->fcoe.lock); #endif /* n-tuple support exists, always init our spinlock */ spin_lock_init(&adapter->fdir_perfect_lock); #ifdef CONFIG_IXGBE_DCB ixgbe_init_dcb(adapter); #endif ixgbe_init_ipsec_offload(adapter); /* default flow control settings */ hw->fc.requested_mode = ixgbe_fc_full; hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */ ixgbe_pbthresh_setup(adapter); hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; hw->fc.send_xon = true; hw->fc.disable_fc_autoneg = ixgbe_device_supports_autoneg_fc(hw); #ifdef CONFIG_PCI_IOV if (max_vfs > 0) e_dev_warn("Enabling SR-IOV VFs using the max_vfs module parameter is deprecated - please use the pci sysfs interface instead.\n"); /* assign number of SR-IOV VFs */ if (hw->mac.type != ixgbe_mac_82598EB) { if (max_vfs > IXGBE_MAX_VFS_DRV_LIMIT) { max_vfs = 0; e_dev_warn("max_vfs parameter out of range. Not assigning any SR-IOV VFs\n"); } } #endif /* CONFIG_PCI_IOV */ /* enable itr by default in dynamic mode */ adapter->rx_itr_setting = 1; adapter->tx_itr_setting = 1; /* set default ring sizes */ adapter->tx_ring_count = IXGBE_DEFAULT_TXD; adapter->rx_ring_count = IXGBE_DEFAULT_RXD; /* set default work limits */ adapter->tx_work_limit = IXGBE_DEFAULT_TX_WORK; /* initialize eeprom parameters */ if (ixgbe_init_eeprom_params_generic(hw)) { e_dev_err("EEPROM initialization failed\n"); return -EIO; } /* PF holds first pool slot */ set_bit(0, adapter->fwd_bitmask); set_bit(__IXGBE_DOWN, &adapter->state); return 0; } /** * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) * @tx_ring: tx descriptor ring (for a specific queue) to setup * * Return 0 on success, negative on failure **/ int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring) { struct device *dev = tx_ring->dev; int orig_node = dev_to_node(dev); int ring_node = -1; int size; size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; if (tx_ring->q_vector) ring_node = tx_ring->q_vector->numa_node; tx_ring->tx_buffer_info = vmalloc_node(size, ring_node); if (!tx_ring->tx_buffer_info) tx_ring->tx_buffer_info = vmalloc(size); if (!tx_ring->tx_buffer_info) goto err; /* round up to nearest 4K */ tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc); tx_ring->size = ALIGN(tx_ring->size, 4096); set_dev_node(dev, ring_node); tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, &tx_ring->dma, GFP_KERNEL); set_dev_node(dev, orig_node); if (!tx_ring->desc) tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, &tx_ring->dma, GFP_KERNEL); if (!tx_ring->desc) goto err; tx_ring->next_to_use = 0; tx_ring->next_to_clean = 0; return 0; err: vfree(tx_ring->tx_buffer_info); tx_ring->tx_buffer_info = NULL; dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n"); return -ENOMEM; } /** * ixgbe_setup_all_tx_resources - allocate all queues Tx resources * @adapter: board private structure * * If this function returns with an error, then it's possible one or * more of the rings is populated (while the rest are not). It is the * callers duty to clean those orphaned rings. * * Return 0 on success, negative on failure **/ static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) { int i, j = 0, err = 0; for (i = 0; i < adapter->num_tx_queues; i++) { err = ixgbe_setup_tx_resources(adapter->tx_ring[i]); if (!err) continue; e_err(probe, "Allocation for Tx Queue %u failed\n", i); goto err_setup_tx; } for (j = 0; j < adapter->num_xdp_queues; j++) { err = ixgbe_setup_tx_resources(adapter->xdp_ring[j]); if (!err) continue; e_err(probe, "Allocation for Tx Queue %u failed\n", j); goto err_setup_tx; } return 0; err_setup_tx: /* rewind the index freeing the rings as we go */ while (j--) ixgbe_free_tx_resources(adapter->xdp_ring[j]); while (i--) ixgbe_free_tx_resources(adapter->tx_ring[i]); return err; } /** * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) * @adapter: pointer to ixgbe_adapter * @rx_ring: rx descriptor ring (for a specific queue) to setup * * Returns 0 on success, negative on failure **/ int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, struct ixgbe_ring *rx_ring) { struct device *dev = rx_ring->dev; int orig_node = dev_to_node(dev); int ring_node = -1; int size; size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; if (rx_ring->q_vector) ring_node = rx_ring->q_vector->numa_node; rx_ring->rx_buffer_info = vmalloc_node(size, ring_node); if (!rx_ring->rx_buffer_info) rx_ring->rx_buffer_info = vmalloc(size); if (!rx_ring->rx_buffer_info) goto err; /* Round up to nearest 4K */ rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); rx_ring->size = ALIGN(rx_ring->size, 4096); set_dev_node(dev, ring_node); rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, &rx_ring->dma, GFP_KERNEL); set_dev_node(dev, orig_node); if (!rx_ring->desc) rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, &rx_ring->dma, GFP_KERNEL); if (!rx_ring->desc) goto err; rx_ring->next_to_clean = 0; rx_ring->next_to_use = 0; /* XDP RX-queue info */ if (xdp_rxq_info_reg(&rx_ring->xdp_rxq, adapter->netdev, rx_ring->queue_index) < 0) goto err; rx_ring->xdp_prog = adapter->xdp_prog; return 0; err: vfree(rx_ring->rx_buffer_info); rx_ring->rx_buffer_info = NULL; dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n"); return -ENOMEM; } /** * ixgbe_setup_all_rx_resources - allocate all queues Rx resources * @adapter: board private structure * * If this function returns with an error, then it's possible one or * more of the rings is populated (while the rest are not). It is the * callers duty to clean those orphaned rings. * * Return 0 on success, negative on failure **/ static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) { int i, err = 0; for (i = 0; i < adapter->num_rx_queues; i++) { err = ixgbe_setup_rx_resources(adapter, adapter->rx_ring[i]); if (!err) continue; e_err(probe, "Allocation for Rx Queue %u failed\n", i); goto err_setup_rx; } #ifdef IXGBE_FCOE err = ixgbe_setup_fcoe_ddp_resources(adapter); if (!err) #endif return 0; err_setup_rx: /* rewind the index freeing the rings as we go */ while (i--) ixgbe_free_rx_resources(adapter->rx_ring[i]); return err; } /** * ixgbe_free_tx_resources - Free Tx Resources per Queue * @tx_ring: Tx descriptor ring for a specific queue * * Free all transmit software resources **/ void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring) { ixgbe_clean_tx_ring(tx_ring); vfree(tx_ring->tx_buffer_info); tx_ring->tx_buffer_info = NULL; /* if not set, then don't free */ if (!tx_ring->desc) return; dma_free_coherent(tx_ring->dev, tx_ring->size, tx_ring->desc, tx_ring->dma); tx_ring->desc = NULL; } /** * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues * @adapter: board private structure * * Free all transmit software resources **/ static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) { int i; for (i = 0; i < adapter->num_tx_queues; i++) if (adapter->tx_ring[i]->desc) ixgbe_free_tx_resources(adapter->tx_ring[i]); for (i = 0; i < adapter->num_xdp_queues; i++) if (adapter->xdp_ring[i]->desc) ixgbe_free_tx_resources(adapter->xdp_ring[i]); } /** * ixgbe_free_rx_resources - Free Rx Resources * @rx_ring: ring to clean the resources from * * Free all receive software resources **/ void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring) { ixgbe_clean_rx_ring(rx_ring); rx_ring->xdp_prog = NULL; xdp_rxq_info_unreg(&rx_ring->xdp_rxq); vfree(rx_ring->rx_buffer_info); rx_ring->rx_buffer_info = NULL; /* if not set, then don't free */ if (!rx_ring->desc) return; dma_free_coherent(rx_ring->dev, rx_ring->size, rx_ring->desc, rx_ring->dma); rx_ring->desc = NULL; } /** * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues * @adapter: board private structure * * Free all receive software resources **/ static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) { int i; #ifdef IXGBE_FCOE ixgbe_free_fcoe_ddp_resources(adapter); #endif for (i = 0; i < adapter->num_rx_queues; i++) if (adapter->rx_ring[i]->desc) ixgbe_free_rx_resources(adapter->rx_ring[i]); } /** * ixgbe_change_mtu - Change the Maximum Transfer Unit * @netdev: network interface device structure * @new_mtu: new value for maximum frame size * * Returns 0 on success, negative on failure **/ static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) { struct ixgbe_adapter *adapter = netdev_priv(netdev); if (adapter->xdp_prog) { int new_frame_size = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; int i; for (i = 0; i < adapter->num_rx_queues; i++) { struct ixgbe_ring *ring = adapter->rx_ring[i]; if (new_frame_size > ixgbe_rx_bufsz(ring)) { e_warn(probe, "Requested MTU size is not supported with XDP\n"); return -EINVAL; } } } /* * For 82599EB we cannot allow legacy VFs to enable their receive * paths when MTU greater than 1500 is configured. So display a * warning that legacy VFs will be disabled. */ if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && (adapter->hw.mac.type == ixgbe_mac_82599EB) && (new_mtu > ETH_DATA_LEN)) e_warn(probe, "Setting MTU > 1500 will disable legacy VFs\n"); e_info(probe, "changing MTU from %d to %d\n", netdev->mtu, new_mtu); /* must set new MTU before calling down or up */ netdev->mtu = new_mtu; if (netif_running(netdev)) ixgbe_reinit_locked(adapter); return 0; } /** * ixgbe_open - Called when a network interface is made active * @netdev: network interface device structure * * Returns 0 on success, negative value on failure * * The open entry point is called when a network interface is made * active by the system (IFF_UP). At this point all resources needed * for transmit and receive operations are allocated, the interrupt * handler is registered with the OS, the watchdog timer is started, * and the stack is notified that the interface is ready. **/ int ixgbe_open(struct net_device *netdev) { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_hw *hw = &adapter->hw; int err, queues; /* disallow open during test */ if (test_bit(__IXGBE_TESTING, &adapter->state)) return -EBUSY; netif_carrier_off(netdev); /* allocate transmit descriptors */ err = ixgbe_setup_all_tx_resources(adapter); if (err) goto err_setup_tx; /* allocate receive descriptors */ err = ixgbe_setup_all_rx_resources(adapter); if (err) goto err_setup_rx; ixgbe_configure(adapter); err = ixgbe_request_irq(adapter); if (err) goto err_req_irq; /* Notify the stack of the actual queue counts. */ queues = adapter->num_tx_queues; err = netif_set_real_num_tx_queues(netdev, queues); if (err) goto err_set_queues; queues = adapter->num_rx_queues; err = netif_set_real_num_rx_queues(netdev, queues); if (err) goto err_set_queues; ixgbe_ptp_init(adapter); ixgbe_up_complete(adapter); ixgbe_clear_udp_tunnel_port(adapter, IXGBE_VXLANCTRL_ALL_UDPPORT_MASK); udp_tunnel_get_rx_info(netdev); return 0; err_set_queues: ixgbe_free_irq(adapter); err_req_irq: ixgbe_free_all_rx_resources(adapter); if (hw->phy.ops.set_phy_power && !adapter->wol) hw->phy.ops.set_phy_power(&adapter->hw, false); err_setup_rx: ixgbe_free_all_tx_resources(adapter); err_setup_tx: ixgbe_reset(adapter); return err; } static void ixgbe_close_suspend(struct ixgbe_adapter *adapter) { ixgbe_ptp_suspend(adapter); if (adapter->hw.phy.ops.enter_lplu) { adapter->hw.phy.reset_disable = true; ixgbe_down(adapter); adapter->hw.phy.ops.enter_lplu(&adapter->hw); adapter->hw.phy.reset_disable = false; } else { ixgbe_down(adapter); } ixgbe_free_irq(adapter); ixgbe_free_all_tx_resources(adapter); ixgbe_free_all_rx_resources(adapter); } /** * ixgbe_close - Disables a network interface * @netdev: network interface device structure * * Returns 0, this is not allowed to fail * * The close entry point is called when an interface is de-activated * by the OS. The hardware is still under the drivers control, but * needs to be disabled. A global MAC reset is issued to stop the * hardware, and all transmit and receive resources are freed. **/ int ixgbe_close(struct net_device *netdev) { struct ixgbe_adapter *adapter = netdev_priv(netdev); ixgbe_ptp_stop(adapter); if (netif_device_present(netdev)) ixgbe_close_suspend(adapter); ixgbe_fdir_filter_exit(adapter); ixgbe_release_hw_control(adapter); return 0; } #ifdef CONFIG_PM static int ixgbe_resume(struct pci_dev *pdev) { struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); struct net_device *netdev = adapter->netdev; u32 err; adapter->hw.hw_addr = adapter->io_addr; pci_set_power_state(pdev, PCI_D0); pci_restore_state(pdev); /* * pci_restore_state clears dev->state_saved so call * pci_save_state to restore it. */ pci_save_state(pdev); err = pci_enable_device_mem(pdev); if (err) { e_dev_err("Cannot enable PCI device from suspend\n"); return err; } smp_mb__before_atomic(); clear_bit(__IXGBE_DISABLED, &adapter->state); pci_set_master(pdev); pci_wake_from_d3(pdev, false); ixgbe_reset(adapter); IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); rtnl_lock(); err = ixgbe_init_interrupt_scheme(adapter); if (!err && netif_running(netdev)) err = ixgbe_open(netdev); if (!err) netif_device_attach(netdev); rtnl_unlock(); return err; } #endif /* CONFIG_PM */ static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake) { struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); struct net_device *netdev = adapter->netdev; struct ixgbe_hw *hw = &adapter->hw; u32 ctrl; u32 wufc = adapter->wol; #ifdef CONFIG_PM int retval = 0; #endif rtnl_lock(); netif_device_detach(netdev); if (netif_running(netdev)) ixgbe_close_suspend(adapter); ixgbe_clear_interrupt_scheme(adapter); rtnl_unlock(); #ifdef CONFIG_PM retval = pci_save_state(pdev); if (retval) return retval; #endif if (hw->mac.ops.stop_link_on_d3) hw->mac.ops.stop_link_on_d3(hw); if (wufc) { u32 fctrl; ixgbe_set_rx_mode(netdev); /* enable the optics for 82599 SFP+ fiber as we can WoL */ if (hw->mac.ops.enable_tx_laser) hw->mac.ops.enable_tx_laser(hw); /* enable the reception of multicast packets */ fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); fctrl |= IXGBE_FCTRL_MPE; IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL); ctrl |= IXGBE_CTRL_GIO_DIS; IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl); IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc); } else { IXGBE_WRITE_REG(hw, IXGBE_WUC, 0); IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0); } switch (hw->mac.type) { case ixgbe_mac_82598EB: pci_wake_from_d3(pdev, false); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: pci_wake_from_d3(pdev, !!wufc); break; default: break; } *enable_wake = !!wufc; if (hw->phy.ops.set_phy_power && !*enable_wake) hw->phy.ops.set_phy_power(hw, false); ixgbe_release_hw_control(adapter); if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) pci_disable_device(pdev); return 0; } #ifdef CONFIG_PM static int ixgbe_suspend(struct pci_dev *pdev, pm_message_t state) { int retval; bool wake; retval = __ixgbe_shutdown(pdev, &wake); if (retval) return retval; if (wake) { pci_prepare_to_sleep(pdev); } else { pci_wake_from_d3(pdev, false); pci_set_power_state(pdev, PCI_D3hot); } return 0; } #endif /* CONFIG_PM */ static void ixgbe_shutdown(struct pci_dev *pdev) { bool wake; __ixgbe_shutdown(pdev, &wake); if (system_state == SYSTEM_POWER_OFF) { pci_wake_from_d3(pdev, wake); pci_set_power_state(pdev, PCI_D3hot); } } /** * ixgbe_update_stats - Update the board statistics counters. * @adapter: board private structure **/ void ixgbe_update_stats(struct ixgbe_adapter *adapter) { struct net_device *netdev = adapter->netdev; struct ixgbe_hw *hw = &adapter->hw; struct ixgbe_hw_stats *hwstats = &adapter->stats; u64 total_mpc = 0; u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0; u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0; u64 alloc_rx_page = 0; u64 bytes = 0, packets = 0, hw_csum_rx_error = 0; if (test_bit(__IXGBE_DOWN, &adapter->state) || test_bit(__IXGBE_RESETTING, &adapter->state)) return; if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) { u64 rsc_count = 0; u64 rsc_flush = 0; for (i = 0; i < adapter->num_rx_queues; i++) { rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count; rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush; } adapter->rsc_total_count = rsc_count; adapter->rsc_total_flush = rsc_flush; } for (i = 0; i < adapter->num_rx_queues; i++) { struct ixgbe_ring *rx_ring = adapter->rx_ring[i]; non_eop_descs += rx_ring->rx_stats.non_eop_descs; alloc_rx_page += rx_ring->rx_stats.alloc_rx_page; alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed; alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed; hw_csum_rx_error += rx_ring->rx_stats.csum_err; bytes += rx_ring->stats.bytes; packets += rx_ring->stats.packets; } adapter->non_eop_descs = non_eop_descs; adapter->alloc_rx_page = alloc_rx_page; adapter->alloc_rx_page_failed = alloc_rx_page_failed; adapter->alloc_rx_buff_failed = alloc_rx_buff_failed; adapter->hw_csum_rx_error = hw_csum_rx_error; netdev->stats.rx_bytes = bytes; netdev->stats.rx_packets = packets; bytes = 0; packets = 0; /* gather some stats to the adapter struct that are per queue */ for (i = 0; i < adapter->num_tx_queues; i++) { struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; restart_queue += tx_ring->tx_stats.restart_queue; tx_busy += tx_ring->tx_stats.tx_busy; bytes += tx_ring->stats.bytes; packets += tx_ring->stats.packets; } for (i = 0; i < adapter->num_xdp_queues; i++) { struct ixgbe_ring *xdp_ring = adapter->xdp_ring[i]; restart_queue += xdp_ring->tx_stats.restart_queue; tx_busy += xdp_ring->tx_stats.tx_busy; bytes += xdp_ring->stats.bytes; packets += xdp_ring->stats.packets; } adapter->restart_queue = restart_queue; adapter->tx_busy = tx_busy; netdev->stats.tx_bytes = bytes; netdev->stats.tx_packets = packets; hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); /* 8 register reads */ for (i = 0; i < 8; i++) { /* for packet buffers not used, the register should read 0 */ mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); missed_rx += mpc; hwstats->mpc[i] += mpc; total_mpc += hwstats->mpc[i]; hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i)); hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i)); switch (hw->mac.type) { case ixgbe_mac_82598EB: hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i)); hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i)); hwstats->pxonrxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONRXC(i)); break; case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: hwstats->pxonrxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i)); break; default: break; } } /*16 register reads */ for (i = 0; i < 16; i++) { hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i)); hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i)); if ((hw->mac.type == ixgbe_mac_82599EB) || (hw->mac.type == ixgbe_mac_X540) || (hw->mac.type == ixgbe_mac_X550) || (hw->mac.type == ixgbe_mac_X550EM_x) || (hw->mac.type == ixgbe_mac_x550em_a)) { hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC_L(i)); IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); /* to clear */ hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC_L(i)); IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); /* to clear */ } } hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); /* work around hardware counting issue */ hwstats->gprc -= missed_rx; ixgbe_update_xoff_received(adapter); /* 82598 hardware only has a 32 bit counter in the high register */ switch (hw->mac.type) { case ixgbe_mac_82598EB: hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH); break; case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: /* OS2BMC stats are X540 and later */ hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC); hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC); hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC); hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC); /* fall through */ case ixgbe_mac_82599EB: for (i = 0; i < 16; i++) adapter->hw_rx_no_dma_resources += IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL); IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */ hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL); IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */ hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL); IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */ hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH); hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS); #ifdef IXGBE_FCOE hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC); hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC); hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC); hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC); hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC); hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC); /* Add up per cpu counters for total ddp aloc fail */ if (adapter->fcoe.ddp_pool) { struct ixgbe_fcoe *fcoe = &adapter->fcoe; struct ixgbe_fcoe_ddp_pool *ddp_pool; unsigned int cpu; u64 noddp = 0, noddp_ext_buff = 0; for_each_possible_cpu(cpu) { ddp_pool = per_cpu_ptr(fcoe->ddp_pool, cpu); noddp += ddp_pool->noddp; noddp_ext_buff += ddp_pool->noddp_ext_buff; } hwstats->fcoe_noddp = noddp; hwstats->fcoe_noddp_ext_buff = noddp_ext_buff; } #endif /* IXGBE_FCOE */ break; default: break; } bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); hwstats->bprc += bprc; hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); if (hw->mac.type == ixgbe_mac_82598EB) hwstats->mprc -= bprc; hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC); hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); hwstats->lxontxc += lxon; lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); hwstats->lxofftxc += lxoff; hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); /* * 82598 errata - tx of flow control packets is included in tx counters */ xon_off_tot = lxon + lxoff; hwstats->gptc -= xon_off_tot; hwstats->mptc -= xon_off_tot; hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC); hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC); hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC); hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR); hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); hwstats->ptc64 -= xon_off_tot; hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); /* Fill out the OS statistics structure */ netdev->stats.multicast = hwstats->mprc; /* Rx Errors */ netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec; netdev->stats.rx_dropped = 0; netdev->stats.rx_length_errors = hwstats->rlec; netdev->stats.rx_crc_errors = hwstats->crcerrs; netdev->stats.rx_missed_errors = total_mpc; } /** * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table * @adapter: pointer to the device adapter structure **/ static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; int i; if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT)) return; adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; /* if interface is down do nothing */ if (test_bit(__IXGBE_DOWN, &adapter->state)) return; /* do nothing if we are not using signature filters */ if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)) return; adapter->fdir_overflow++; if (ixgbe_reinit_fdir_tables_82599(hw) == 0) { for (i = 0; i < adapter->num_tx_queues; i++) set_bit(__IXGBE_TX_FDIR_INIT_DONE, &(adapter->tx_ring[i]->state)); for (i = 0; i < adapter->num_xdp_queues; i++) set_bit(__IXGBE_TX_FDIR_INIT_DONE, &adapter->xdp_ring[i]->state); /* re-enable flow director interrupts */ IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR); } else { e_err(probe, "failed to finish FDIR re-initialization, " "ignored adding FDIR ATR filters\n"); } } /** * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts * @adapter: pointer to the device adapter structure * * This function serves two purposes. First it strobes the interrupt lines * in order to make certain interrupts are occurring. Secondly it sets the * bits needed to check for TX hangs. As a result we should immediately * determine if a hang has occurred. */ static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u64 eics = 0; int i; /* If we're down, removing or resetting, just bail */ if (test_bit(__IXGBE_DOWN, &adapter->state) || test_bit(__IXGBE_REMOVING, &adapter->state) || test_bit(__IXGBE_RESETTING, &adapter->state)) return; /* Force detection of hung controller */ if (netif_carrier_ok(adapter->netdev)) { for (i = 0; i < adapter->num_tx_queues; i++) set_check_for_tx_hang(adapter->tx_ring[i]); for (i = 0; i < adapter->num_xdp_queues; i++) set_check_for_tx_hang(adapter->xdp_ring[i]); } if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { /* * for legacy and MSI interrupts don't set any bits * that are enabled for EIAM, because this operation * would set *both* EIMS and EICS for any bit in EIAM */ IXGBE_WRITE_REG(hw, IXGBE_EICS, (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); } else { /* get one bit for every active tx/rx interrupt vector */ for (i = 0; i < adapter->num_q_vectors; i++) { struct ixgbe_q_vector *qv = adapter->q_vector[i]; if (qv->rx.ring || qv->tx.ring) eics |= BIT_ULL(i); } } /* Cause software interrupt to ensure rings are cleaned */ ixgbe_irq_rearm_queues(adapter, eics); } /** * ixgbe_watchdog_update_link - update the link status * @adapter: pointer to the device adapter structure **/ static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 link_speed = adapter->link_speed; bool link_up = adapter->link_up; bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)) return; if (hw->mac.ops.check_link) { hw->mac.ops.check_link(hw, &link_speed, &link_up, false); } else { /* always assume link is up, if no check link function */ link_speed = IXGBE_LINK_SPEED_10GB_FULL; link_up = true; } if (adapter->ixgbe_ieee_pfc) pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); if (link_up && !((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && pfc_en)) { hw->mac.ops.fc_enable(hw); ixgbe_set_rx_drop_en(adapter); } if (link_up || time_after(jiffies, (adapter->link_check_timeout + IXGBE_TRY_LINK_TIMEOUT))) { adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC); IXGBE_WRITE_FLUSH(hw); } adapter->link_up = link_up; adapter->link_speed = link_speed; } static void ixgbe_update_default_up(struct ixgbe_adapter *adapter) { #ifdef CONFIG_IXGBE_DCB struct net_device *netdev = adapter->netdev; struct dcb_app app = { .selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE, .protocol = 0, }; u8 up = 0; if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) up = dcb_ieee_getapp_mask(netdev, &app); adapter->default_up = (up > 1) ? (ffs(up) - 1) : 0; #endif } /** * ixgbe_watchdog_link_is_up - update netif_carrier status and * print link up message * @adapter: pointer to the device adapter structure **/ static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter) { struct net_device *netdev = adapter->netdev; struct ixgbe_hw *hw = &adapter->hw; u32 link_speed = adapter->link_speed; const char *speed_str; bool flow_rx, flow_tx; /* only continue if link was previously down */ if (netif_carrier_ok(netdev)) return; adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; switch (hw->mac.type) { case ixgbe_mac_82598EB: { u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL); u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS); flow_rx = !!(frctl & IXGBE_FCTRL_RFCE); flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X); } break; case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: case ixgbe_mac_82599EB: { u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN); u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG); flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE); flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X); } break; default: flow_tx = false; flow_rx = false; break; } adapter->last_rx_ptp_check = jiffies; if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) ixgbe_ptp_start_cyclecounter(adapter); switch (link_speed) { case IXGBE_LINK_SPEED_10GB_FULL: speed_str = "10 Gbps"; break; case IXGBE_LINK_SPEED_5GB_FULL: speed_str = "5 Gbps"; break; case IXGBE_LINK_SPEED_2_5GB_FULL: speed_str = "2.5 Gbps"; break; case IXGBE_LINK_SPEED_1GB_FULL: speed_str = "1 Gbps"; break; case IXGBE_LINK_SPEED_100_FULL: speed_str = "100 Mbps"; break; case IXGBE_LINK_SPEED_10_FULL: speed_str = "10 Mbps"; break; default: speed_str = "unknown speed"; break; } e_info(drv, "NIC Link is Up %s, Flow Control: %s\n", speed_str, ((flow_rx && flow_tx) ? "RX/TX" : (flow_rx ? "RX" : (flow_tx ? "TX" : "None")))); netif_carrier_on(netdev); ixgbe_check_vf_rate_limit(adapter); /* enable transmits */ netif_tx_wake_all_queues(adapter->netdev); /* update the default user priority for VFs */ ixgbe_update_default_up(adapter); /* ping all the active vfs to let them know link has changed */ ixgbe_ping_all_vfs(adapter); } /** * ixgbe_watchdog_link_is_down - update netif_carrier status and * print link down message * @adapter: pointer to the adapter structure **/ static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *adapter) { struct net_device *netdev = adapter->netdev; struct ixgbe_hw *hw = &adapter->hw; adapter->link_up = false; adapter->link_speed = 0; /* only continue if link was up previously */ if (!netif_carrier_ok(netdev)) return; /* poll for SFP+ cable when link is down */ if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB) adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) ixgbe_ptp_start_cyclecounter(adapter); e_info(drv, "NIC Link is Down\n"); netif_carrier_off(netdev); /* ping all the active vfs to let them know link has changed */ ixgbe_ping_all_vfs(adapter); } static bool ixgbe_ring_tx_pending(struct ixgbe_adapter *adapter) { int i; for (i = 0; i < adapter->num_tx_queues; i++) { struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; if (tx_ring->next_to_use != tx_ring->next_to_clean) return true; } for (i = 0; i < adapter->num_xdp_queues; i++) { struct ixgbe_ring *ring = adapter->xdp_ring[i]; if (ring->next_to_use != ring->next_to_clean) return true; } return false; } static bool ixgbe_vf_tx_pending(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); int i, j; if (!adapter->num_vfs) return false; /* resetting the PF is only needed for MAC before X550 */ if (hw->mac.type >= ixgbe_mac_X550) return false; for (i = 0; i < adapter->num_vfs; i++) { for (j = 0; j < q_per_pool; j++) { u32 h, t; h = IXGBE_READ_REG(hw, IXGBE_PVFTDHN(q_per_pool, i, j)); t = IXGBE_READ_REG(hw, IXGBE_PVFTDTN(q_per_pool, i, j)); if (h != t) return true; } } return false; } /** * ixgbe_watchdog_flush_tx - flush queues on link down * @adapter: pointer to the device adapter structure **/ static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter) { if (!netif_carrier_ok(adapter->netdev)) { if (ixgbe_ring_tx_pending(adapter) || ixgbe_vf_tx_pending(adapter)) { /* We've lost link, so the controller stops DMA, * but we've got queued Tx work that's never going * to get done, so reset controller to flush Tx. * (Do the reset outside of interrupt context). */ e_warn(drv, "initiating reset to clear Tx work after link loss\n"); set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); } } } #ifdef CONFIG_PCI_IOV static void ixgbe_check_for_bad_vf(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; struct pci_dev *pdev = adapter->pdev; unsigned int vf; u32 gpc; if (!(netif_carrier_ok(adapter->netdev))) return; gpc = IXGBE_READ_REG(hw, IXGBE_TXDGPC); if (gpc) /* If incrementing then no need for the check below */ return; /* Check to see if a bad DMA write target from an errant or * malicious VF has caused a PCIe error. If so then we can * issue a VFLR to the offending VF(s) and then resume without * requesting a full slot reset. */ if (!pdev) return; /* check status reg for all VFs owned by this PF */ for (vf = 0; vf < adapter->num_vfs; ++vf) { struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev; u16 status_reg; if (!vfdev) continue; pci_read_config_word(vfdev, PCI_STATUS, &status_reg); if (status_reg != IXGBE_FAILED_READ_CFG_WORD && status_reg & PCI_STATUS_REC_MASTER_ABORT) pcie_flr(vfdev); } } static void ixgbe_spoof_check(struct ixgbe_adapter *adapter) { u32 ssvpc; /* Do not perform spoof check for 82598 or if not in IOV mode */ if (adapter->hw.mac.type == ixgbe_mac_82598EB || adapter->num_vfs == 0) return; ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC); /* * ssvpc register is cleared on read, if zero then no * spoofed packets in the last interval. */ if (!ssvpc) return; e_warn(drv, "%u Spoofed packets detected\n", ssvpc); } #else static void ixgbe_spoof_check(struct ixgbe_adapter __always_unused *adapter) { } static void ixgbe_check_for_bad_vf(struct ixgbe_adapter __always_unused *adapter) { } #endif /* CONFIG_PCI_IOV */ /** * ixgbe_watchdog_subtask - check and bring link up * @adapter: pointer to the device adapter structure **/ static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter) { /* if interface is down, removing or resetting, do nothing */ if (test_bit(__IXGBE_DOWN, &adapter->state) || test_bit(__IXGBE_REMOVING, &adapter->state) || test_bit(__IXGBE_RESETTING, &adapter->state)) return; ixgbe_watchdog_update_link(adapter); if (adapter->link_up) ixgbe_watchdog_link_is_up(adapter); else ixgbe_watchdog_link_is_down(adapter); ixgbe_check_for_bad_vf(adapter); ixgbe_spoof_check(adapter); ixgbe_update_stats(adapter); ixgbe_watchdog_flush_tx(adapter); } /** * ixgbe_sfp_detection_subtask - poll for SFP+ cable * @adapter: the ixgbe adapter structure **/ static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; s32 err; /* not searching for SFP so there is nothing to do here */ if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) && !(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) return; if (adapter->sfp_poll_time && time_after(adapter->sfp_poll_time, jiffies)) return; /* If not yet time to poll for SFP */ /* someone else is in init, wait until next service event */ if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) return; adapter->sfp_poll_time = jiffies + IXGBE_SFP_POLL_JIFFIES - 1; err = hw->phy.ops.identify_sfp(hw); if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) goto sfp_out; if (err == IXGBE_ERR_SFP_NOT_PRESENT) { /* If no cable is present, then we need to reset * the next time we find a good cable. */ adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; } /* exit on error */ if (err) goto sfp_out; /* exit if reset not needed */ if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) goto sfp_out; adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET; /* * A module may be identified correctly, but the EEPROM may not have * support for that module. setup_sfp() will fail in that case, so * we should not allow that module to load. */ if (hw->mac.type == ixgbe_mac_82598EB) err = hw->phy.ops.reset(hw); else err = hw->mac.ops.setup_sfp(hw); if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) goto sfp_out; adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type); sfp_out: clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); if ((err == IXGBE_ERR_SFP_NOT_SUPPORTED) && (adapter->netdev->reg_state == NETREG_REGISTERED)) { e_dev_err("failed to initialize because an unsupported " "SFP+ module type was detected.\n"); e_dev_err("Reload the driver after installing a " "supported module.\n"); unregister_netdev(adapter->netdev); } } /** * ixgbe_sfp_link_config_subtask - set up link SFP after module install * @adapter: the ixgbe adapter structure **/ static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 cap_speed; u32 speed; bool autoneg = false; if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG)) return; /* someone else is in init, wait until next service event */ if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) return; adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; hw->mac.ops.get_link_capabilities(hw, &cap_speed, &autoneg); /* advertise highest capable link speed */ if (!autoneg && (cap_speed & IXGBE_LINK_SPEED_10GB_FULL)) speed = IXGBE_LINK_SPEED_10GB_FULL; else speed = cap_speed & (IXGBE_LINK_SPEED_10GB_FULL | IXGBE_LINK_SPEED_1GB_FULL); if (hw->mac.ops.setup_link) hw->mac.ops.setup_link(hw, speed, true); adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; adapter->link_check_timeout = jiffies; clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); } /** * ixgbe_service_timer - Timer Call-back * @t: pointer to timer_list structure **/ static void ixgbe_service_timer(struct timer_list *t) { struct ixgbe_adapter *adapter = from_timer(adapter, t, service_timer); unsigned long next_event_offset; /* poll faster when waiting for link */ if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) next_event_offset = HZ / 10; else next_event_offset = HZ * 2; /* Reset the timer */ mod_timer(&adapter->service_timer, next_event_offset + jiffies); ixgbe_service_event_schedule(adapter); } static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 status; if (!(adapter->flags2 & IXGBE_FLAG2_PHY_INTERRUPT)) return; adapter->flags2 &= ~IXGBE_FLAG2_PHY_INTERRUPT; if (!hw->phy.ops.handle_lasi) return; status = hw->phy.ops.handle_lasi(&adapter->hw); if (status != IXGBE_ERR_OVERTEMP) return; e_crit(drv, "%s\n", ixgbe_overheat_msg); } static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter) { if (!test_and_clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state)) return; rtnl_lock(); /* If we're already down, removing or resetting, just bail */ if (test_bit(__IXGBE_DOWN, &adapter->state) || test_bit(__IXGBE_REMOVING, &adapter->state) || test_bit(__IXGBE_RESETTING, &adapter->state)) { rtnl_unlock(); return; } ixgbe_dump(adapter); netdev_err(adapter->netdev, "Reset adapter\n"); adapter->tx_timeout_count++; ixgbe_reinit_locked(adapter); rtnl_unlock(); } /** * ixgbe_check_fw_error - Check firmware for errors * @adapter: the adapter private structure * * Check firmware errors in register FWSM */ static bool ixgbe_check_fw_error(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; u32 fwsm; /* read fwsm.ext_err_ind register and log errors */ fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw)); if (fwsm & IXGBE_FWSM_EXT_ERR_IND_MASK || !(fwsm & IXGBE_FWSM_FW_VAL_BIT)) e_dev_warn("Warning firmware error detected FWSM: 0x%08X\n", fwsm); if (hw->mac.ops.fw_recovery_mode && hw->mac.ops.fw_recovery_mode(hw)) { 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"); return true; } return false; } /** * ixgbe_service_task - manages and runs subtasks * @work: pointer to work_struct containing our data **/ static void ixgbe_service_task(struct work_struct *work) { struct ixgbe_adapter *adapter = container_of(work, struct ixgbe_adapter, service_task); if (ixgbe_removed(adapter->hw.hw_addr)) { if (!test_bit(__IXGBE_DOWN, &adapter->state)) { rtnl_lock(); ixgbe_down(adapter); rtnl_unlock(); } ixgbe_service_event_complete(adapter); return; } if (ixgbe_check_fw_error(adapter)) { if (!test_bit(__IXGBE_DOWN, &adapter->state)) { rtnl_lock(); unregister_netdev(adapter->netdev); rtnl_unlock(); } ixgbe_service_event_complete(adapter); return; } if (adapter->flags2 & IXGBE_FLAG2_UDP_TUN_REREG_NEEDED) { rtnl_lock(); adapter->flags2 &= ~IXGBE_FLAG2_UDP_TUN_REREG_NEEDED; udp_tunnel_get_rx_info(adapter->netdev); rtnl_unlock(); } ixgbe_reset_subtask(adapter); ixgbe_phy_interrupt_subtask(adapter); ixgbe_sfp_detection_subtask(adapter); ixgbe_sfp_link_config_subtask(adapter); ixgbe_check_overtemp_subtask(adapter); ixgbe_watchdog_subtask(adapter); ixgbe_fdir_reinit_subtask(adapter); ixgbe_check_hang_subtask(adapter); if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) { ixgbe_ptp_overflow_check(adapter); if (adapter->flags & IXGBE_FLAG_RX_HWTSTAMP_IN_REGISTER) ixgbe_ptp_rx_hang(adapter); ixgbe_ptp_tx_hang(adapter); } ixgbe_service_event_complete(adapter); } static int ixgbe_tso(struct ixgbe_ring *tx_ring, struct ixgbe_tx_buffer *first, u8 *hdr_len, struct ixgbe_ipsec_tx_data *itd) { u32 vlan_macip_lens, type_tucmd, mss_l4len_idx; struct sk_buff *skb = first->skb; union { struct iphdr *v4; struct ipv6hdr *v6; unsigned char *hdr; } ip; union { struct tcphdr *tcp; unsigned char *hdr; } l4; u32 paylen, l4_offset; u32 fceof_saidx = 0; int err; if (skb->ip_summed != CHECKSUM_PARTIAL) return 0; if (!skb_is_gso(skb)) return 0; err = skb_cow_head(skb, 0); if (err < 0) return err; if (eth_p_mpls(first->protocol)) ip.hdr = skb_inner_network_header(skb); else ip.hdr = skb_network_header(skb); l4.hdr = skb_checksum_start(skb); /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP; /* initialize outer IP header fields */ if (ip.v4->version == 4) { unsigned char *csum_start = skb_checksum_start(skb); unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4); int len = csum_start - trans_start; /* IP header will have to cancel out any data that * is not a part of the outer IP header, so set to * a reverse csum if needed, else init check to 0. */ ip.v4->check = (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) ? csum_fold(csum_partial(trans_start, len, 0)) : 0; type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4; ip.v4->tot_len = 0; first->tx_flags |= IXGBE_TX_FLAGS_TSO | IXGBE_TX_FLAGS_CSUM | IXGBE_TX_FLAGS_IPV4; } else { ip.v6->payload_len = 0; first->tx_flags |= IXGBE_TX_FLAGS_TSO | IXGBE_TX_FLAGS_CSUM; } /* determine offset of inner transport header */ l4_offset = l4.hdr - skb->data; /* compute length of segmentation header */ *hdr_len = (l4.tcp->doff * 4) + l4_offset; /* remove payload length from inner checksum */ paylen = skb->len - l4_offset; csum_replace_by_diff(&l4.tcp->check, (__force __wsum)htonl(paylen)); /* update gso size and bytecount with header size */ first->gso_segs = skb_shinfo(skb)->gso_segs; first->bytecount += (first->gso_segs - 1) * *hdr_len; /* mss_l4len_id: use 0 as index for TSO */ mss_l4len_idx = (*hdr_len - l4_offset) << IXGBE_ADVTXD_L4LEN_SHIFT; mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT; fceof_saidx |= itd->sa_idx; type_tucmd |= itd->flags | itd->trailer_len; /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */ vlan_macip_lens = l4.hdr - ip.hdr; vlan_macip_lens |= (ip.hdr - skb->data) << IXGBE_ADVTXD_MACLEN_SHIFT; vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, mss_l4len_idx); return 1; } static inline bool ixgbe_ipv6_csum_is_sctp(struct sk_buff *skb) { unsigned int offset = 0; ipv6_find_hdr(skb, &offset, IPPROTO_SCTP, NULL, NULL); return offset == skb_checksum_start_offset(skb); } static void ixgbe_tx_csum(struct ixgbe_ring *tx_ring, struct ixgbe_tx_buffer *first, struct ixgbe_ipsec_tx_data *itd) { struct sk_buff *skb = first->skb; u32 vlan_macip_lens = 0; u32 fceof_saidx = 0; u32 type_tucmd = 0; if (skb->ip_summed != CHECKSUM_PARTIAL) { csum_failed: if (!(first->tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | IXGBE_TX_FLAGS_CC))) return; goto no_csum; } switch (skb->csum_offset) { case offsetof(struct tcphdr, check): type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP; /* fall through */ case offsetof(struct udphdr, check): break; case offsetof(struct sctphdr, checksum): /* validate that this is actually an SCTP request */ if (((first->protocol == htons(ETH_P_IP)) && (ip_hdr(skb)->protocol == IPPROTO_SCTP)) || ((first->protocol == htons(ETH_P_IPV6)) && ixgbe_ipv6_csum_is_sctp(skb))) { type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_SCTP; break; } /* fall through */ default: skb_checksum_help(skb); goto csum_failed; } /* update TX checksum flag */ first->tx_flags |= IXGBE_TX_FLAGS_CSUM; vlan_macip_lens = skb_checksum_start_offset(skb) - skb_network_offset(skb); no_csum: /* vlan_macip_lens: MACLEN, VLAN tag */ vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT; vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; fceof_saidx |= itd->sa_idx; type_tucmd |= itd->flags | itd->trailer_len; ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, 0); } #define IXGBE_SET_FLAG(_input, _flag, _result) \ ((_flag <= _result) ? \ ((u32)(_input & _flag) * (_result / _flag)) : \ ((u32)(_input & _flag) / (_flag / _result))) static u32 ixgbe_tx_cmd_type(struct sk_buff *skb, u32 tx_flags) { /* set type for advanced descriptor with frame checksum insertion */ u32 cmd_type = IXGBE_ADVTXD_DTYP_DATA | IXGBE_ADVTXD_DCMD_DEXT | IXGBE_ADVTXD_DCMD_IFCS; /* set HW vlan bit if vlan is present */ cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_HW_VLAN, IXGBE_ADVTXD_DCMD_VLE); /* set segmentation enable bits for TSO/FSO */ cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSO, IXGBE_ADVTXD_DCMD_TSE); /* set timestamp bit if present */ cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSTAMP, IXGBE_ADVTXD_MAC_TSTAMP); /* insert frame checksum */ cmd_type ^= IXGBE_SET_FLAG(skb->no_fcs, 1, IXGBE_ADVTXD_DCMD_IFCS); return cmd_type; } static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc, u32 tx_flags, unsigned int paylen) { u32 olinfo_status = paylen << IXGBE_ADVTXD_PAYLEN_SHIFT; /* enable L4 checksum for TSO and TX checksum offload */ olinfo_status |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_CSUM, IXGBE_ADVTXD_POPTS_TXSM); /* enable IPv4 checksum for TSO */ olinfo_status |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_IPV4, IXGBE_ADVTXD_POPTS_IXSM); /* enable IPsec */ olinfo_status |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_IPSEC, IXGBE_ADVTXD_POPTS_IPSEC); /* * Check Context must be set if Tx switch is enabled, which it * always is for case where virtual functions are running */ olinfo_status |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_CC, IXGBE_ADVTXD_CC); tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); } static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) { netif_stop_subqueue(tx_ring->netdev, tx_ring->queue_index); /* Herbert's original patch had: * smp_mb__after_netif_stop_queue(); * but since that doesn't exist yet, just open code it. */ smp_mb(); /* We need to check again in a case another CPU has just * made room available. */ if (likely(ixgbe_desc_unused(tx_ring) < size)) return -EBUSY; /* A reprieve! - use start_queue because it doesn't call schedule */ netif_start_subqueue(tx_ring->netdev, tx_ring->queue_index); ++tx_ring->tx_stats.restart_queue; return 0; } static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) { if (likely(ixgbe_desc_unused(tx_ring) >= size)) return 0; return __ixgbe_maybe_stop_tx(tx_ring, size); } static int ixgbe_tx_map(struct ixgbe_ring *tx_ring, struct ixgbe_tx_buffer *first, const u8 hdr_len) { struct sk_buff *skb = first->skb; struct ixgbe_tx_buffer *tx_buffer; union ixgbe_adv_tx_desc *tx_desc; struct skb_frag_struct *frag; dma_addr_t dma; unsigned int data_len, size; u32 tx_flags = first->tx_flags; u32 cmd_type = ixgbe_tx_cmd_type(skb, tx_flags); u16 i = tx_ring->next_to_use; tx_desc = IXGBE_TX_DESC(tx_ring, i); ixgbe_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len); size = skb_headlen(skb); data_len = skb->data_len; #ifdef IXGBE_FCOE if (tx_flags & IXGBE_TX_FLAGS_FCOE) { if (data_len < sizeof(struct fcoe_crc_eof)) { size -= sizeof(struct fcoe_crc_eof) - data_len; data_len = 0; } else { data_len -= sizeof(struct fcoe_crc_eof); } } #endif dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); tx_buffer = first; for (frag = &skb_shinfo(skb)->frags[0];; frag++) { if (dma_mapping_error(tx_ring->dev, dma)) goto dma_error; /* record length, and DMA address */ dma_unmap_len_set(tx_buffer, len, size); dma_unmap_addr_set(tx_buffer, dma, dma); tx_desc->read.buffer_addr = cpu_to_le64(dma); while (unlikely(size > IXGBE_MAX_DATA_PER_TXD)) { tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ IXGBE_MAX_DATA_PER_TXD); i++; tx_desc++; if (i == tx_ring->count) { tx_desc = IXGBE_TX_DESC(tx_ring, 0); i = 0; } tx_desc->read.olinfo_status = 0; dma += IXGBE_MAX_DATA_PER_TXD; size -= IXGBE_MAX_DATA_PER_TXD; tx_desc->read.buffer_addr = cpu_to_le64(dma); } if (likely(!data_len)) break; tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size); i++; tx_desc++; if (i == tx_ring->count) { tx_desc = IXGBE_TX_DESC(tx_ring, 0); i = 0; } tx_desc->read.olinfo_status = 0; #ifdef IXGBE_FCOE size = min_t(unsigned int, data_len, skb_frag_size(frag)); #else size = skb_frag_size(frag); #endif data_len -= size; dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size, DMA_TO_DEVICE); tx_buffer = &tx_ring->tx_buffer_info[i]; } /* write last descriptor with RS and EOP bits */ cmd_type |= size | IXGBE_TXD_CMD; tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); /* set the timestamp */ first->time_stamp = jiffies; skb_tx_timestamp(skb); /* * Force memory writes to complete before letting h/w know there * are new descriptors to fetch. (Only applicable for weak-ordered * memory model archs, such as IA-64). * * We also need this memory barrier to make certain all of the * status bits have been updated before next_to_watch is written. */ wmb(); /* set next_to_watch value indicating a packet is present */ first->next_to_watch = tx_desc; i++; if (i == tx_ring->count) i = 0; tx_ring->next_to_use = i; ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED); if (netif_xmit_stopped(txring_txq(tx_ring)) || !skb->xmit_more) { writel(i, tx_ring->tail); /* we need this if more than one processor can write to our tail * at a time, it synchronizes IO on IA64/Altix systems */ mmiowb(); } return 0; dma_error: dev_err(tx_ring->dev, "TX DMA map failed\n"); /* clear dma mappings for failed tx_buffer_info map */ for (;;) { tx_buffer = &tx_ring->tx_buffer_info[i]; if (dma_unmap_len(tx_buffer, len)) dma_unmap_page(tx_ring->dev, dma_unmap_addr(tx_buffer, dma), dma_unmap_len(tx_buffer, len), DMA_TO_DEVICE); dma_unmap_len_set(tx_buffer, len, 0); if (tx_buffer == first) break; if (i == 0) i += tx_ring->count; i--; } dev_kfree_skb_any(first->skb); first->skb = NULL; tx_ring->next_to_use = i; return -1; } static void ixgbe_atr(struct ixgbe_ring *ring, struct ixgbe_tx_buffer *first) { struct ixgbe_q_vector *q_vector = ring->q_vector; union ixgbe_atr_hash_dword input = { .dword = 0 }; union ixgbe_atr_hash_dword common = { .dword = 0 }; union { unsigned char *network; struct iphdr *ipv4; struct ipv6hdr *ipv6; } hdr; struct tcphdr *th; unsigned int hlen; struct sk_buff *skb; __be16 vlan_id; int l4_proto; /* if ring doesn't have a interrupt vector, cannot perform ATR */ if (!q_vector) return; /* do nothing if sampling is disabled */ if (!ring->atr_sample_rate) return; ring->atr_count++; /* currently only IPv4/IPv6 with TCP is supported */ if ((first->protocol != htons(ETH_P_IP)) && (first->protocol != htons(ETH_P_IPV6))) return; /* snag network header to get L4 type and address */ skb = first->skb; hdr.network = skb_network_header(skb); if (unlikely(hdr.network <= skb->data)) return; if (skb->encapsulation && first->protocol == htons(ETH_P_IP) && hdr.ipv4->protocol == IPPROTO_UDP) { struct ixgbe_adapter *adapter = q_vector->adapter; if (unlikely(skb_tail_pointer(skb) < hdr.network + VXLAN_HEADROOM)) return; /* verify the port is recognized as VXLAN */ if (adapter->vxlan_port && udp_hdr(skb)->dest == adapter->vxlan_port) hdr.network = skb_inner_network_header(skb); if (adapter->geneve_port && udp_hdr(skb)->dest == adapter->geneve_port) hdr.network = skb_inner_network_header(skb); } /* Make sure we have at least [minimum IPv4 header + TCP] * or [IPv6 header] bytes */ if (unlikely(skb_tail_pointer(skb) < hdr.network + 40)) return; /* Currently only IPv4/IPv6 with TCP is supported */ switch (hdr.ipv4->version) { case IPVERSION: /* access ihl as u8 to avoid unaligned access on ia64 */ hlen = (hdr.network[0] & 0x0F) << 2; l4_proto = hdr.ipv4->protocol; break; case 6: hlen = hdr.network - skb->data; l4_proto = ipv6_find_hdr(skb, &hlen, IPPROTO_TCP, NULL, NULL); hlen -= hdr.network - skb->data; break; default: return; } if (l4_proto != IPPROTO_TCP) return; if (unlikely(skb_tail_pointer(skb) < hdr.network + hlen + sizeof(struct tcphdr))) return; th = (struct tcphdr *)(hdr.network + hlen); /* skip this packet since the socket is closing */ if (th->fin) return; /* sample on all syn packets or once every atr sample count */ if (!th->syn && (ring->atr_count < ring->atr_sample_rate)) return; /* reset sample count */ ring->atr_count = 0; vlan_id = htons(first->tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT); /* * src and dst are inverted, think how the receiver sees them * * The input is broken into two sections, a non-compressed section * containing vm_pool, vlan_id, and flow_type. The rest of the data * is XORed together and stored in the compressed dword. */ input.formatted.vlan_id = vlan_id; /* * since src port and flex bytes occupy the same word XOR them together * and write the value to source port portion of compressed dword */ if (first->tx_flags & (IXGBE_TX_FLAGS_SW_VLAN | IXGBE_TX_FLAGS_HW_VLAN)) common.port.src ^= th->dest ^ htons(ETH_P_8021Q); else common.port.src ^= th->dest ^ first->protocol; common.port.dst ^= th->source; switch (hdr.ipv4->version) { case IPVERSION: input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4; common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr; break; case 6: input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6; common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^ hdr.ipv6->saddr.s6_addr32[1] ^ hdr.ipv6->saddr.s6_addr32[2] ^ hdr.ipv6->saddr.s6_addr32[3] ^ hdr.ipv6->daddr.s6_addr32[0] ^ hdr.ipv6->daddr.s6_addr32[1] ^ hdr.ipv6->daddr.s6_addr32[2] ^ hdr.ipv6->daddr.s6_addr32[3]; break; default: break; } if (hdr.network != skb_network_header(skb)) input.formatted.flow_type |= IXGBE_ATR_L4TYPE_TUNNEL_MASK; /* This assumes the Rx queue and Tx queue are bound to the same CPU */ ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw, input, common, ring->queue_index); } #ifdef IXGBE_FCOE static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb, struct net_device *sb_dev, select_queue_fallback_t fallback) { struct ixgbe_adapter *adapter; struct ixgbe_ring_feature *f; int txq; if (sb_dev) { u8 tc = netdev_get_prio_tc_map(dev, skb->priority); struct net_device *vdev = sb_dev; txq = vdev->tc_to_txq[tc].offset; txq += reciprocal_scale(skb_get_hash(skb), vdev->tc_to_txq[tc].count); return txq; } /* * only execute the code below if protocol is FCoE * or FIP and we have FCoE enabled on the adapter */ switch (vlan_get_protocol(skb)) { case htons(ETH_P_FCOE): case htons(ETH_P_FIP): adapter = netdev_priv(dev); if (!sb_dev && (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) break; /* fall through */ default: return fallback(dev, skb, sb_dev); } f = &adapter->ring_feature[RING_F_FCOE]; txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : smp_processor_id(); while (txq >= f->indices) txq -= f->indices; return txq + f->offset; } #endif int ixgbe_xmit_xdp_ring(struct ixgbe_adapter *adapter, struct xdp_frame *xdpf) { struct ixgbe_ring *ring = adapter->xdp_ring[smp_processor_id()]; struct ixgbe_tx_buffer *tx_buffer; union ixgbe_adv_tx_desc *tx_desc; u32 len, cmd_type; dma_addr_t dma; u16 i; len = xdpf->len; if (unlikely(!ixgbe_desc_unused(ring))) return IXGBE_XDP_CONSUMED; dma = dma_map_single(ring->dev, xdpf->data, len, DMA_TO_DEVICE); if (dma_mapping_error(ring->dev, dma)) return IXGBE_XDP_CONSUMED; /* record the location of the first descriptor for this packet */ tx_buffer = &ring->tx_buffer_info[ring->next_to_use]; tx_buffer->bytecount = len; tx_buffer->gso_segs = 1; tx_buffer->protocol = 0; i = ring->next_to_use; tx_desc = IXGBE_TX_DESC(ring, i); dma_unmap_len_set(tx_buffer, len, len); dma_unmap_addr_set(tx_buffer, dma, dma); tx_buffer->xdpf = xdpf; tx_desc->read.buffer_addr = cpu_to_le64(dma); /* put descriptor type bits */ cmd_type = IXGBE_ADVTXD_DTYP_DATA | IXGBE_ADVTXD_DCMD_DEXT | IXGBE_ADVTXD_DCMD_IFCS; cmd_type |= len | IXGBE_TXD_CMD; tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); tx_desc->read.olinfo_status = cpu_to_le32(len << IXGBE_ADVTXD_PAYLEN_SHIFT); /* Avoid any potential race with xdp_xmit and cleanup */ smp_wmb(); /* set next_to_watch value indicating a packet is present */ i++; if (i == ring->count) i = 0; tx_buffer->next_to_watch = tx_desc; ring->next_to_use = i; return IXGBE_XDP_TX; } netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, struct ixgbe_adapter *adapter, struct ixgbe_ring *tx_ring) { struct ixgbe_tx_buffer *first; int tso; u32 tx_flags = 0; unsigned short f; u16 count = TXD_USE_COUNT(skb_headlen(skb)); struct ixgbe_ipsec_tx_data ipsec_tx = { 0 }; __be16 protocol = skb->protocol; u8 hdr_len = 0; /* * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD, * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD, * + 2 desc gap to keep tail from touching head, * + 1 desc for context descriptor, * otherwise try next time */ for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size); if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) { tx_ring->tx_stats.tx_busy++; return NETDEV_TX_BUSY; } /* record the location of the first descriptor for this packet */ first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; first->skb = skb; first->bytecount = skb->len; first->gso_segs = 1; /* if we have a HW VLAN tag being added default to the HW one */ if (skb_vlan_tag_present(skb)) { tx_flags |= skb_vlan_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT; tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; /* else if it is a SW VLAN check the next protocol and store the tag */ } else if (protocol == htons(ETH_P_8021Q)) { struct vlan_hdr *vhdr, _vhdr; vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr), &_vhdr); if (!vhdr) goto out_drop; tx_flags |= ntohs(vhdr->h_vlan_TCI) << IXGBE_TX_FLAGS_VLAN_SHIFT; tx_flags |= IXGBE_TX_FLAGS_SW_VLAN; } protocol = vlan_get_protocol(skb); if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && adapter->ptp_clock) { if (!test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state)) { skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; tx_flags |= IXGBE_TX_FLAGS_TSTAMP; /* schedule check for Tx timestamp */ adapter->ptp_tx_skb = skb_get(skb); adapter->ptp_tx_start = jiffies; schedule_work(&adapter->ptp_tx_work); } else { adapter->tx_hwtstamp_skipped++; } } #ifdef CONFIG_PCI_IOV /* * Use the l2switch_enable flag - would be false if the DMA * Tx switch had been disabled. */ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) tx_flags |= IXGBE_TX_FLAGS_CC; #endif /* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */ if ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && ((tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | IXGBE_TX_FLAGS_SW_VLAN)) || (skb->priority != TC_PRIO_CONTROL))) { tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK; tx_flags |= (skb->priority & 0x7) << IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT; if (tx_flags & IXGBE_TX_FLAGS_SW_VLAN) { struct vlan_ethhdr *vhdr; if (skb_cow_head(skb, 0)) goto out_drop; vhdr = (struct vlan_ethhdr *)skb->data; vhdr->h_vlan_TCI = htons(tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT); } else { tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; } } /* record initial flags and protocol */ first->tx_flags = tx_flags; first->protocol = protocol; #ifdef IXGBE_FCOE /* setup tx offload for FCoE */ if ((protocol == htons(ETH_P_FCOE)) && (tx_ring->netdev->features & (NETIF_F_FSO | NETIF_F_FCOE_CRC))) { tso = ixgbe_fso(tx_ring, first, &hdr_len); if (tso < 0) goto out_drop; goto xmit_fcoe; } #endif /* IXGBE_FCOE */ #ifdef CONFIG_IXGBE_IPSEC if (secpath_exists(skb) && !ixgbe_ipsec_tx(tx_ring, first, &ipsec_tx)) goto out_drop; #endif tso = ixgbe_tso(tx_ring, first, &hdr_len, &ipsec_tx); if (tso < 0) goto out_drop; else if (!tso) ixgbe_tx_csum(tx_ring, first, &ipsec_tx); /* add the ATR filter if ATR is on */ if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state)) ixgbe_atr(tx_ring, first); #ifdef IXGBE_FCOE xmit_fcoe: #endif /* IXGBE_FCOE */ if (ixgbe_tx_map(tx_ring, first, hdr_len)) goto cleanup_tx_timestamp; return NETDEV_TX_OK; out_drop: dev_kfree_skb_any(first->skb); first->skb = NULL; cleanup_tx_timestamp: if (unlikely(tx_flags & IXGBE_TX_FLAGS_TSTAMP)) { dev_kfree_skb_any(adapter->ptp_tx_skb); adapter->ptp_tx_skb = NULL; cancel_work_sync(&adapter->ptp_tx_work); clear_bit_unlock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state); } return NETDEV_TX_OK; } static netdev_tx_t __ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev, struct ixgbe_ring *ring) { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_ring *tx_ring; /* * The minimum packet size for olinfo paylen is 17 so pad the skb * in order to meet this minimum size requirement. */ if (skb_put_padto(skb, 17)) return NETDEV_TX_OK; tx_ring = ring ? ring : adapter->tx_ring[skb->queue_mapping]; if (unlikely(test_bit(__IXGBE_TX_DISABLED, &tx_ring->state))) return NETDEV_TX_BUSY; return ixgbe_xmit_frame_ring(skb, adapter, tx_ring); } static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, struct net_device *netdev) { return __ixgbe_xmit_frame(skb, netdev, NULL); } /** * ixgbe_set_mac - Change the Ethernet Address of the NIC * @netdev: network interface device structure * @p: pointer to an address structure * * Returns 0 on success, negative on failure **/ static int ixgbe_set_mac(struct net_device *netdev, void *p) { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_hw *hw = &adapter->hw; struct sockaddr *addr = p; if (!is_valid_ether_addr(addr->sa_data)) return -EADDRNOTAVAIL; memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); ixgbe_mac_set_default_filter(adapter); return 0; } static int ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr) { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_hw *hw = &adapter->hw; u16 value; int rc; if (adapter->mii_bus) { int regnum = addr; if (devad != MDIO_DEVAD_NONE) regnum |= (devad << 16) | MII_ADDR_C45; return mdiobus_read(adapter->mii_bus, prtad, regnum); } if (prtad != hw->phy.mdio.prtad) return -EINVAL; rc = hw->phy.ops.read_reg(hw, addr, devad, &value); if (!rc) rc = value; return rc; } static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad, u16 addr, u16 value) { struct ixgbe_adapter *adapter = netdev_priv(netdev); struct ixgbe_hw *hw = &adapter->hw; if (adapter->mii_bus) { int regnum = addr; if (devad != MDIO_DEVAD_NONE) regnum |= (devad << 16) | MII_ADDR_C45; return mdiobus_write(adapter->mii_bus, prtad, regnum, value); } if (prtad != hw->phy.mdio.prtad) return -EINVAL; return hw->phy.ops.write_reg(hw, addr, devad, value); } static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd) { struct ixgbe_adapter *adapter = netdev_priv(netdev); switch (cmd) { case SIOCSHWTSTAMP: return ixgbe_ptp_set_ts_config(adapter, req); case SIOCGHWTSTAMP: return ixgbe_ptp_get_ts_config(adapter, req); case SIOCGMIIPHY: if (!adapter->hw.phy.ops.read_reg) return -EOPNOTSUPP; /* fall through */ default: return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd); } } /** * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding * netdev->dev_addrs * @dev: network interface device structure * * Returns non-zero on failure **/ static int ixgbe_add_sanmac_netdev(struct net_device *dev) { int err = 0; struct ixgbe_adapter *adapter = netdev_priv(dev); struct ixgbe_hw *hw = &adapter->hw; if (is_valid_ether_addr(hw->mac.san_addr)) { rtnl_lock(); err = dev_addr_add(dev, hw->mac.san_addr, NETDEV_HW_ADDR_T_SAN); rtnl_unlock(); /* update SAN MAC vmdq pool selection */ hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0)); } return err; } /** * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding * netdev->dev_addrs * @dev: network interface device structure * * Returns non-zero on failure **/ static int ixgbe_del_sanmac_netdev(struct net_device *dev) { int err = 0; struct ixgbe_adapter *adapter = netdev_priv(dev); struct ixgbe_mac_info *mac = &adapter->hw.mac; if (is_valid_ether_addr(mac->san_addr)) { rtnl_lock(); err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN); rtnl_unlock(); } return err; } static void ixgbe_get_ring_stats64(struct rtnl_link_stats64 *stats, struct ixgbe_ring *ring) { u64 bytes, packets; unsigned int start; if (ring) { do { start = u64_stats_fetch_begin_irq(&ring->syncp); packets = ring->stats.packets; bytes = ring->stats.bytes; } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); stats->tx_packets += packets; stats->tx_bytes += bytes; } } static void ixgbe_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) { struct ixgbe_adapter *adapter = netdev_priv(netdev); int i; rcu_read_lock(); for (i = 0; i < adapter->num_rx_queues; i++) { struct ixgbe_ring *ring = READ_ONCE(adapter->rx_ring[i]); u64 bytes, packets; unsigned int start; if (ring) { do { start = u64_stats_fetch_begin_irq(&ring->syncp); packets = ring->stats.packets; bytes = ring->stats.bytes; } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); stats->rx_packets += packets; stats->rx_bytes += bytes; } } for (i = 0; i < adapter->num_tx_queues; i++) { struct ixgbe_ring *ring = READ_ONCE(adapter->tx_ring[i]); ixgbe_get_ring_stats64(stats, ring); } for (i = 0; i < adapter->num_xdp_queues; i++) { struct ixgbe_ring *ring = READ_ONCE(adapter->xdp_ring[i]); ixgbe_get_ring_stats64(stats, ring); } rcu_read_unlock(); /* following stats updated by ixgbe_watchdog_task() */ stats->multicast = netdev->stats.multicast; stats->rx_errors = netdev->stats.rx_errors; stats->rx_length_errors = netdev->stats.rx_length_errors; stats->rx_crc_errors = netdev->stats.rx_crc_errors; stats->rx_missed_errors = netdev->stats.rx_missed_errors; } #ifdef CONFIG_IXGBE_DCB /** * ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid. * @adapter: pointer to ixgbe_adapter * @tc: number of traffic classes currently enabled * * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm * 802.1Q priority maps to a packet buffer that exists. */ static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc) { struct ixgbe_hw *hw = &adapter->hw; u32 reg, rsave; int i; /* 82598 have a static priority to TC mapping that can not * be changed so no validation is needed. */ if (hw->mac.type == ixgbe_mac_82598EB) return; reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC); rsave = reg; for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT); /* If up2tc is out of bounds default to zero */ if (up2tc > tc) reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT); } if (reg != rsave) IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg); return; } /** * ixgbe_set_prio_tc_map - Configure netdev prio tc map * @adapter: Pointer to adapter struct * * Populate the netdev user priority to tc map */ static void ixgbe_set_prio_tc_map(struct ixgbe_adapter *adapter) { struct net_device *dev = adapter->netdev; struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg; struct ieee_ets *ets = adapter->ixgbe_ieee_ets; u8 prio; for (prio = 0; prio < MAX_USER_PRIORITY; prio++) { u8 tc = 0; if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) tc = ixgbe_dcb_get_tc_from_up(dcb_cfg, 0, prio); else if (ets) tc = ets->prio_tc[prio]; netdev_set_prio_tc_map(dev, prio, tc); } } #endif /* CONFIG_IXGBE_DCB */ static int ixgbe_reassign_macvlan_pool(struct net_device *vdev, void *data) { struct ixgbe_adapter *adapter = data; struct ixgbe_fwd_adapter *accel; int pool; /* we only care about macvlans... */ if (!netif_is_macvlan(vdev)) return 0; /* that have hardware offload enabled... */ accel = macvlan_accel_priv(vdev); if (!accel) return 0; /* If we can relocate to a different bit do so */ pool = find_first_zero_bit(adapter->fwd_bitmask, adapter->num_rx_pools); if (pool < adapter->num_rx_pools) { set_bit(pool, adapter->fwd_bitmask); accel->pool = pool; return 0; } /* if we cannot find a free pool then disable the offload */ netdev_err(vdev, "L2FW offload disabled due to lack of queue resources\n"); macvlan_release_l2fw_offload(vdev); /* unbind the queues and drop the subordinate channel config */ netdev_unbind_sb_channel(adapter->netdev, vdev); netdev_set_sb_channel(vdev, 0); kfree(accel); return 0; } static void ixgbe_defrag_macvlan_pools(struct net_device *dev) { struct ixgbe_adapter *adapter = netdev_priv(dev); /* flush any stale bits out of the fwd bitmask */ bitmap_clear(adapter->fwd_bitmask, 1, 63); /* walk through upper devices reassigning pools */ netdev_walk_all_upper_dev_rcu(dev, ixgbe_reassign_macvlan_pool, adapter); } /** * ixgbe_setup_tc - configure net_device for multiple traffic classes * * @dev: net device to configure * @tc: number of traffic classes to enable */ int ixgbe_setup_tc(struct net_device *dev, u8 tc) { struct ixgbe_adapter *adapter = netdev_priv(dev); struct ixgbe_hw *hw = &adapter->hw; /* Hardware supports up to 8 traffic classes */ if (tc > adapter->dcb_cfg.num_tcs.pg_tcs) return -EINVAL; if (hw->mac.type == ixgbe_mac_82598EB && tc && tc < MAX_TRAFFIC_CLASS) return -EINVAL; /* Hardware has to reinitialize queues and interrupts to * match packet buffer alignment. Unfortunately, the * hardware is not flexible enough to do this dynamically. */ if (netif_running(dev)) ixgbe_close(dev); else ixgbe_reset(adapter); ixgbe_clear_interrupt_scheme(adapter); #ifdef CONFIG_IXGBE_DCB if (tc) { if (adapter->xdp_prog) { e_warn(probe, "DCB is not supported with XDP\n"); ixgbe_init_interrupt_scheme(adapter); if (netif_running(dev)) ixgbe_open(dev); return -EINVAL; } netdev_set_num_tc(dev, tc); ixgbe_set_prio_tc_map(adapter); adapter->hw_tcs = tc; adapter->flags |= IXGBE_FLAG_DCB_ENABLED; if (adapter->hw.mac.type == ixgbe_mac_82598EB) { adapter->last_lfc_mode = adapter->hw.fc.requested_mode; adapter->hw.fc.requested_mode = ixgbe_fc_none; } } else { netdev_reset_tc(dev); if (adapter->hw.mac.type == ixgbe_mac_82598EB) adapter->hw.fc.requested_mode = adapter->last_lfc_mode; adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; adapter->hw_tcs = tc; adapter->temp_dcb_cfg.pfc_mode_enable = false; adapter->dcb_cfg.pfc_mode_enable = false; } ixgbe_validate_rtr(adapter, tc); #endif /* CONFIG_IXGBE_DCB */ ixgbe_init_interrupt_scheme(adapter); ixgbe_defrag_macvlan_pools(dev); if (netif_running(dev)) return ixgbe_open(dev); return 0; } static int ixgbe_delete_clsu32(struct ixgbe_adapter *adapter, struct tc_cls_u32_offload *cls) { u32 hdl = cls->knode.handle; u32 uhtid = TC_U32_USERHTID(cls->knode.handle); u32 loc = cls->knode.handle & 0xfffff; int err = 0, i, j; struct ixgbe_jump_table *jump = NULL; if (loc > IXGBE_MAX_HW_ENTRIES) return -EINVAL; if ((uhtid != 0x800) && (uhtid >= IXGBE_MAX_LINK_HANDLE)) return -EINVAL; /* Clear this filter in the link data it is associated with */ if (uhtid != 0x800) { jump = adapter->jump_tables[uhtid]; if (!jump) return -EINVAL; if (!test_bit(loc - 1, jump->child_loc_map)) return -EINVAL; clear_bit(loc - 1, jump->child_loc_map); } /* Check if the filter being deleted is a link */ for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { jump = adapter->jump_tables[i]; if (jump && jump->link_hdl == hdl) { /* Delete filters in the hardware in the child hash * table associated with this link */ for (j = 0; j < IXGBE_MAX_HW_ENTRIES; j++) { if (!test_bit(j, jump->child_loc_map)) continue; spin_lock(&adapter->fdir_perfect_lock); err = ixgbe_update_ethtool_fdir_entry(adapter, NULL, j + 1); spin_unlock(&adapter->fdir_perfect_lock); clear_bit(j, jump->child_loc_map); } /* Remove resources for this link */ kfree(jump->input); kfree(jump->mask); kfree(jump); adapter->jump_tables[i] = NULL; return err; } } spin_lock(&adapter->fdir_perfect_lock); err = ixgbe_update_ethtool_fdir_entry(adapter, NULL, loc); spin_unlock(&adapter->fdir_perfect_lock); return err; } static int ixgbe_configure_clsu32_add_hnode(struct ixgbe_adapter *adapter, struct tc_cls_u32_offload *cls) { u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); if (uhtid >= IXGBE_MAX_LINK_HANDLE) return -EINVAL; /* This ixgbe devices do not support hash tables at the moment * so abort when given hash tables. */ if (cls->hnode.divisor > 0) return -EINVAL; set_bit(uhtid - 1, &adapter->tables); return 0; } static int ixgbe_configure_clsu32_del_hnode(struct ixgbe_adapter *adapter, struct tc_cls_u32_offload *cls) { u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); if (uhtid >= IXGBE_MAX_LINK_HANDLE) return -EINVAL; clear_bit(uhtid - 1, &adapter->tables); return 0; } #ifdef CONFIG_NET_CLS_ACT struct upper_walk_data { struct ixgbe_adapter *adapter; u64 action; int ifindex; u8 queue; }; static int get_macvlan_queue(struct net_device *upper, void *_data) { if (netif_is_macvlan(upper)) { struct ixgbe_fwd_adapter *vadapter = macvlan_accel_priv(upper); struct upper_walk_data *data = _data; struct ixgbe_adapter *adapter = data->adapter; int ifindex = data->ifindex; if (vadapter && upper->ifindex == ifindex) { data->queue = adapter->rx_ring[vadapter->rx_base_queue]->reg_idx; data->action = data->queue; return 1; } } return 0; } static int handle_redirect_action(struct ixgbe_adapter *adapter, int ifindex, u8 *queue, u64 *action) { struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; unsigned int num_vfs = adapter->num_vfs, vf; struct upper_walk_data data; struct net_device *upper; /* redirect to a SRIOV VF */ for (vf = 0; vf < num_vfs; ++vf) { upper = pci_get_drvdata(adapter->vfinfo[vf].vfdev); if (upper->ifindex == ifindex) { *queue = vf * __ALIGN_MASK(1, ~vmdq->mask); *action = vf + 1; *action <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF; return 0; } } /* redirect to a offloaded macvlan netdev */ data.adapter = adapter; data.ifindex = ifindex; data.action = 0; data.queue = 0; if (netdev_walk_all_upper_dev_rcu(adapter->netdev, get_macvlan_queue, &data)) { *action = data.action; *queue = data.queue; return 0; } return -EINVAL; } static int parse_tc_actions(struct ixgbe_adapter *adapter, struct tcf_exts *exts, u64 *action, u8 *queue) { const struct tc_action *a; int i; if (!tcf_exts_has_actions(exts)) return -EINVAL; tcf_exts_for_each_action(i, a, exts) { /* Drop action */ if (is_tcf_gact_shot(a)) { *action = IXGBE_FDIR_DROP_QUEUE; *queue = IXGBE_FDIR_DROP_QUEUE; return 0; } /* Redirect to a VF or a offloaded macvlan */ if (is_tcf_mirred_egress_redirect(a)) { struct net_device *dev = tcf_mirred_dev(a); if (!dev) return -EINVAL; return handle_redirect_action(adapter, dev->ifindex, queue, action); } return -EINVAL; } return -EINVAL; } #else static int parse_tc_actions(struct ixgbe_adapter *adapter, struct tcf_exts *exts, u64 *action, u8 *queue) { return -EINVAL; } #endif /* CONFIG_NET_CLS_ACT */ static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter *input, union ixgbe_atr_input *mask, struct tc_cls_u32_offload *cls, struct ixgbe_mat_field *field_ptr, struct ixgbe_nexthdr *nexthdr) { int i, j, off; __be32 val, m; bool found_entry = false, found_jump_field = false; for (i = 0; i < cls->knode.sel->nkeys; i++) { off = cls->knode.sel->keys[i].off; val = cls->knode.sel->keys[i].val; m = cls->knode.sel->keys[i].mask; for (j = 0; field_ptr[j].val; j++) { if (field_ptr[j].off == off) { field_ptr[j].val(input, mask, (__force u32)val, (__force u32)m); input->filter.formatted.flow_type |= field_ptr[j].type; found_entry = true; break; } } if (nexthdr) { if (nexthdr->off == cls->knode.sel->keys[i].off && nexthdr->val == (__force u32)cls->knode.sel->keys[i].val && nexthdr->mask == (__force u32)cls->knode.sel->keys[i].mask) found_jump_field = true; else continue; } } if (nexthdr && !found_jump_field) return -EINVAL; if (!found_entry) return 0; mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK | IXGBE_ATR_L4TYPE_MASK; if (input->filter.formatted.flow_type == IXGBE_ATR_FLOW_TYPE_IPV4) mask->formatted.flow_type &= IXGBE_ATR_L4TYPE_IPV6_MASK; return 0; } static int ixgbe_configure_clsu32(struct ixgbe_adapter *adapter, struct tc_cls_u32_offload *cls) { __be16 protocol = cls->common.protocol; u32 loc = cls->knode.handle & 0xfffff; struct ixgbe_hw *hw = &adapter->hw; struct ixgbe_mat_field *field_ptr; struct ixgbe_fdir_filter *input = NULL; union ixgbe_atr_input *mask = NULL; struct ixgbe_jump_table *jump = NULL; int i, err = -EINVAL; u8 queue; u32 uhtid, link_uhtid; uhtid = TC_U32_USERHTID(cls->knode.handle); link_uhtid = TC_U32_USERHTID(cls->knode.link_handle); /* At the moment cls_u32 jumps to network layer and skips past * L2 headers. The canonical method to match L2 frames is to use * negative values. However this is error prone at best but really * just broken because there is no way to "know" what sort of hdr * is in front of the network layer. Fix cls_u32 to support L2 * headers when needed. */ if (protocol != htons(ETH_P_IP)) return err; if (loc >= ((1024 << adapter->fdir_pballoc) - 2)) { e_err(drv, "Location out of range\n"); return err; } /* cls u32 is a graph starting at root node 0x800. The driver tracks * links and also the fields used to advance the parser across each * link (e.g. nexthdr/eat parameters from 'tc'). This way we can map * the u32 graph onto the hardware parse graph denoted in ixgbe_model.h * To add support for new nodes update ixgbe_model.h parse structures * this function _should_ be generic try not to hardcode values here. */ if (uhtid == 0x800) { field_ptr = (adapter->jump_tables[0])->mat; } else { if (uhtid >= IXGBE_MAX_LINK_HANDLE) return err; if (!adapter->jump_tables[uhtid]) return err; field_ptr = (adapter->jump_tables[uhtid])->mat; } if (!field_ptr) return err; /* At this point we know the field_ptr is valid and need to either * build cls_u32 link or attach filter. Because adding a link to * a handle that does not exist is invalid and the same for adding * rules to handles that don't exist. */ if (link_uhtid) { struct ixgbe_nexthdr *nexthdr = ixgbe_ipv4_jumps; if (link_uhtid >= IXGBE_MAX_LINK_HANDLE) return err; if (!test_bit(link_uhtid - 1, &adapter->tables)) return err; /* Multiple filters as links to the same hash table are not * supported. To add a new filter with the same next header * but different match/jump conditions, create a new hash table * and link to it. */ if (adapter->jump_tables[link_uhtid] && (adapter->jump_tables[link_uhtid])->link_hdl) { e_err(drv, "Link filter exists for link: %x\n", link_uhtid); return err; } for (i = 0; nexthdr[i].jump; i++) { if (nexthdr[i].o != cls->knode.sel->offoff || nexthdr[i].s != cls->knode.sel->offshift || nexthdr[i].m != (__force u32)cls->knode.sel->offmask) return err; jump = kzalloc(sizeof(*jump), GFP_KERNEL); if (!jump) return -ENOMEM; input = kzalloc(sizeof(*input), GFP_KERNEL); if (!input) { err = -ENOMEM; goto free_jump; } mask = kzalloc(sizeof(*mask), GFP_KERNEL); if (!mask) { err = -ENOMEM; goto free_input; } jump->input = input; jump->mask = mask; jump->link_hdl = cls->knode.handle; err = ixgbe_clsu32_build_input(input, mask, cls, field_ptr, &nexthdr[i]); if (!err) { jump->mat = nexthdr[i].jump; adapter->jump_tables[link_uhtid] = jump; break; } } return 0; } input = kzalloc(sizeof(*input), GFP_KERNEL); if (!input) return -ENOMEM; mask = kzalloc(sizeof(*mask), GFP_KERNEL); if (!mask) { err = -ENOMEM; goto free_input; } if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) { if ((adapter->jump_tables[uhtid])->input) memcpy(input, (adapter->jump_tables[uhtid])->input, sizeof(*input)); if ((adapter->jump_tables[uhtid])->mask) memcpy(mask, (adapter->jump_tables[uhtid])->mask, sizeof(*mask)); /* Lookup in all child hash tables if this location is already * filled with a filter */ for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { struct ixgbe_jump_table *link = adapter->jump_tables[i]; if (link && (test_bit(loc - 1, link->child_loc_map))) { e_err(drv, "Filter exists in location: %x\n", loc); err = -EINVAL; goto err_out; } } } err = ixgbe_clsu32_build_input(input, mask, cls, field_ptr, NULL); if (err) goto err_out; err = parse_tc_actions(adapter, cls->knode.exts, &input->action, &queue); if (err < 0) goto err_out; input->sw_idx = loc; spin_lock(&adapter->fdir_perfect_lock); if (hlist_empty(&adapter->fdir_filter_list)) { memcpy(&adapter->fdir_mask, mask, sizeof(*mask)); err = ixgbe_fdir_set_input_mask_82599(hw, mask); if (err) goto err_out_w_lock; } else if (memcmp(&adapter->fdir_mask, mask, sizeof(*mask))) { err = -EINVAL; goto err_out_w_lock; } ixgbe_atr_compute_perfect_hash_82599(&input->filter, mask); err = ixgbe_fdir_write_perfect_filter_82599(hw, &input->filter, input->sw_idx, queue); if (!err) ixgbe_update_ethtool_fdir_entry(adapter, input, input->sw_idx); spin_unlock(&adapter->fdir_perfect_lock); if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) set_bit(loc - 1, (adapter->jump_tables[uhtid])->child_loc_map); kfree(mask); return err; err_out_w_lock: spin_unlock(&adapter->fdir_perfect_lock); err_out: kfree(mask); free_input: kfree(input); free_jump: kfree(jump); return err; } static int ixgbe_setup_tc_cls_u32(struct ixgbe_adapter *adapter, struct tc_cls_u32_offload *cls_u32) { switch (cls_u32->command) { case TC_CLSU32_NEW_KNODE: case TC_CLSU32_REPLACE_KNODE: return ixgbe_configure_clsu32(adapter, cls_u32); case TC_CLSU32_DELETE_KNODE: return ixgbe_delete_clsu32(adapter, cls_u32); case TC_CLSU32_NEW_HNODE: case TC_CLSU32_REPLACE_HNODE: return ixgbe_configure_clsu32_add_hnode(adapter, cls_u32); case TC_CLSU32_DELETE_HNODE: return ixgbe_configure_clsu32_del_hnode(adapter, cls_u32); default: return -EOPNOTSUPP; } } static int ixgbe_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv) { struct ixgbe_adapter *adapter = cb_priv; if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) return -EOPNOTSUPP; switch (type) { case TC_SETUP_CLSU32: return ixgbe_setup_tc_cls_u32(adapter, type_data); default: return -EOPNOTSUPP; } } static int ixgbe_setup_tc_block(struct net_device *dev, struct tc_block_offload *f) { struct ixgbe_adapter *adapter = netdev_priv(dev); if (f->binder_type != TCF_BLOCK_BINDER_TYPE_CLSACT_INGRESS) return -EOPNOTSUPP; switch (f->command) { case TC_BLOCK_BIND: return tcf_block_cb_register(f->block, ixgbe_setup_tc_block_cb, adapter, adapter, f->extack); case TC_BLOCK_UNBIND: tcf_block_cb_unregister(f->block, ixgbe_setup_tc_block_cb, adapter); return 0; default: return -EOPNOTSUPP; } } static int ixgbe_setup_tc_mqprio(struct net_device *dev, struct tc_mqprio_qopt *mqprio) { mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; return ixgbe_setup_tc(dev, mqprio->num_tc); } static int __ixgbe_setup_tc(struct net_device *dev, enum tc_setup_type type, void *type_data) { switch (type) { case TC_SETUP_BLOCK: return ixgbe_setup_tc_block(dev, type_data); case TC_SETUP_QDISC_MQPRIO: return ixgbe_setup_tc_mqprio(dev, type_data); default: return -EOPNOTSUPP; } } #ifdef CONFIG_PCI_IOV void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter) { struct net_device *netdev = adapter->netdev; rtnl_lock(); ixgbe_setup_tc(netdev, adapter->hw_tcs); rtnl_unlock(); } #endif void ixgbe_do_reset(struct net_device *netdev) { struct ixgbe_adapter *adapter = netdev_priv(netdev); if (netif_running(netdev)) ixgbe_reinit_locked(adapter); else ixgbe_reset(adapter); } static netdev_features_t ixgbe_fix_features(struct net_device *netdev, netdev_features_t features) { struct ixgbe_adapter *adapter = netdev_priv(netdev); /* If Rx checksum is disabled, then RSC/LRO should also be disabled */ if (!(features & NETIF_F_RXCSUM)) features &= ~NETIF_F_LRO; /* Turn off LRO if not RSC capable */ if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)) features &= ~NETIF_F_LRO; if (adapter->xdp_prog && (features & NETIF_F_LRO)) { e_dev_err("LRO is not supported with XDP\n"); features &= ~NETIF_F_LRO; } return features; } static void ixgbe_reset_l2fw_offload(struct ixgbe_adapter *adapter) { int rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus()); /* go back to full RSS if we're not running SR-IOV */ if (!adapter->ring_feature[RING_F_VMDQ].offset) adapter->flags &= ~(IXGBE_FLAG_VMDQ_ENABLED | IXGBE_FLAG_SRIOV_ENABLED); adapter->ring_feature[RING_F_RSS].limit = rss; adapter->ring_feature[RING_F_VMDQ].limit = 1; ixgbe_setup_tc(adapter->netdev, adapter->hw_tcs); } static int ixgbe_set_features(struct net_device *netdev, netdev_features_t features) { struct ixgbe_adapter *adapter = netdev_priv(netdev); netdev_features_t changed = netdev->features ^ features; bool need_reset = false; /* Make sure RSC matches LRO, reset if change */ if (!(features & NETIF_F_LRO)) { if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) need_reset = true; adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED; } else if ((adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) && !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) { if (adapter->rx_itr_setting == 1 || adapter->rx_itr_setting > IXGBE_MIN_RSC_ITR) { adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED; need_reset = true; } else if ((changed ^ features) & NETIF_F_LRO) { e_info(probe, "rx-usecs set too low, " "disabling RSC\n"); } } /* * Check if Flow Director n-tuple support or hw_tc support was * enabled or disabled. If the state changed, we need to reset. */ if ((features & NETIF_F_NTUPLE) || (features & NETIF_F_HW_TC)) { /* turn off ATR, enable perfect filters and reset */ if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) need_reset = true; adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE; } else { /* turn off perfect filters, enable ATR and reset */ if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) need_reset = true; adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE; /* We cannot enable ATR if SR-IOV is enabled */ if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED || /* We cannot enable ATR if we have 2 or more tcs */ (adapter->hw_tcs > 1) || /* We cannot enable ATR if RSS is disabled */ (adapter->ring_feature[RING_F_RSS].limit <= 1) || /* A sample rate of 0 indicates ATR disabled */ (!adapter->atr_sample_rate)) ; /* do nothing not supported */ else /* otherwise supported and set the flag */ adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE; } if (changed & NETIF_F_RXALL) need_reset = true; netdev->features = features; if ((adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE)) { if (features & NETIF_F_RXCSUM) { adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED; } else { u32 port_mask = IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK; ixgbe_clear_udp_tunnel_port(adapter, port_mask); } } if ((adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE)) { if (features & NETIF_F_RXCSUM) { adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED; } else { u32 port_mask = IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK; ixgbe_clear_udp_tunnel_port(adapter, port_mask); } } if ((changed & NETIF_F_HW_L2FW_DOFFLOAD) && adapter->num_rx_pools > 1) ixgbe_reset_l2fw_offload(adapter); else if (need_reset) ixgbe_do_reset(netdev); else if (changed & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER)) ixgbe_set_rx_mode(netdev); return 0; } /** * ixgbe_add_udp_tunnel_port - Get notifications about adding UDP tunnel ports * @dev: The port's netdev * @ti: Tunnel endpoint information **/ static void ixgbe_add_udp_tunnel_port(struct net_device *dev, struct udp_tunnel_info *ti) { struct ixgbe_adapter *adapter = netdev_priv(dev); struct ixgbe_hw *hw = &adapter->hw; __be16 port = ti->port; u32 port_shift = 0; u32 reg; if (ti->sa_family != AF_INET) return; switch (ti->type) { case UDP_TUNNEL_TYPE_VXLAN: if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE)) return; if (adapter->vxlan_port == port) return; if (adapter->vxlan_port) { netdev_info(dev, "VXLAN port %d set, not adding port %d\n", ntohs(adapter->vxlan_port), ntohs(port)); return; } adapter->vxlan_port = port; break; case UDP_TUNNEL_TYPE_GENEVE: if (!(adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE)) return; if (adapter->geneve_port == port) return; if (adapter->geneve_port) { netdev_info(dev, "GENEVE port %d set, not adding port %d\n", ntohs(adapter->geneve_port), ntohs(port)); return; } port_shift = IXGBE_VXLANCTRL_GENEVE_UDPPORT_SHIFT; adapter->geneve_port = port; break; default: return; } reg = IXGBE_READ_REG(hw, IXGBE_VXLANCTRL) | ntohs(port) << port_shift; IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, reg); } /** * ixgbe_del_udp_tunnel_port - Get notifications about removing UDP tunnel ports * @dev: The port's netdev * @ti: Tunnel endpoint information **/ static void ixgbe_del_udp_tunnel_port(struct net_device *dev, struct udp_tunnel_info *ti) { struct ixgbe_adapter *adapter = netdev_priv(dev); u32 port_mask; if (ti->type != UDP_TUNNEL_TYPE_VXLAN && ti->type != UDP_TUNNEL_TYPE_GENEVE) return; if (ti->sa_family != AF_INET) return; switch (ti->type) { case UDP_TUNNEL_TYPE_VXLAN: if (!(adapter->flags & IXGBE_FLAG_VXLAN_OFFLOAD_CAPABLE)) return; if (adapter->vxlan_port != ti->port) { netdev_info(dev, "VXLAN port %d not found\n", ntohs(ti->port)); return; } port_mask = IXGBE_VXLANCTRL_VXLAN_UDPPORT_MASK; break; case UDP_TUNNEL_TYPE_GENEVE: if (!(adapter->flags & IXGBE_FLAG_GENEVE_OFFLOAD_CAPABLE)) return; if (adapter->geneve_port != ti->port) { netdev_info(dev, "GENEVE port %d not found\n", ntohs(ti->port)); return; } port_mask = IXGBE_VXLANCTRL_GENEVE_UDPPORT_MASK; break; default: return; } ixgbe_clear_udp_tunnel_port(adapter, port_mask); adapter->flags2 |= IXGBE_FLAG2_UDP_TUN_REREG_NEEDED; } static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], struct net_device *dev, const unsigned char *addr, u16 vid, u16 flags) { /* guarantee we can provide a unique filter for the unicast address */ if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) { struct ixgbe_adapter *adapter = netdev_priv(dev); u16 pool = VMDQ_P(0); if (netdev_uc_count(dev) >= ixgbe_available_rars(adapter, pool)) return -ENOMEM; } return ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, flags); } /** * ixgbe_configure_bridge_mode - set various bridge modes * @adapter: the private structure * @mode: requested bridge mode * * Configure some settings require for various bridge modes. **/ static int ixgbe_configure_bridge_mode(struct ixgbe_adapter *adapter, __u16 mode) { struct ixgbe_hw *hw = &adapter->hw; unsigned int p, num_pools; u32 vmdctl; switch (mode) { case BRIDGE_MODE_VEPA: /* disable Tx loopback, rely on switch hairpin mode */ IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 0); /* must enable Rx switching replication to allow multicast * packet reception on all VFs, and to enable source address * pruning. */ vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); vmdctl |= IXGBE_VT_CTL_REPLEN; IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); /* enable Rx source address pruning. Note, this requires * replication to be enabled or else it does nothing. */ num_pools = adapter->num_vfs + adapter->num_rx_pools; for (p = 0; p < num_pools; p++) { if (hw->mac.ops.set_source_address_pruning) hw->mac.ops.set_source_address_pruning(hw, true, p); } break; case BRIDGE_MODE_VEB: /* enable Tx loopback for internal VF/PF communication */ IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); /* disable Rx switching replication unless we have SR-IOV * virtual functions */ vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); if (!adapter->num_vfs) vmdctl &= ~IXGBE_VT_CTL_REPLEN; IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); /* disable Rx source address pruning, since we don't expect to * be receiving external loopback of our transmitted frames. */ num_pools = adapter->num_vfs + adapter->num_rx_pools; for (p = 0; p < num_pools; p++) { if (hw->mac.ops.set_source_address_pruning) hw->mac.ops.set_source_address_pruning(hw, false, p); } break; default: return -EINVAL; } adapter->bridge_mode = mode; e_info(drv, "enabling bridge mode: %s\n", mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB"); return 0; } static int ixgbe_ndo_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 flags, struct netlink_ext_ack *extack) { struct ixgbe_adapter *adapter = netdev_priv(dev); struct nlattr *attr, *br_spec; int rem; if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) return -EOPNOTSUPP; br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); if (!br_spec) return -EINVAL; nla_for_each_nested(attr, br_spec, rem) { int status; __u16 mode; if (nla_type(attr) != IFLA_BRIDGE_MODE) continue; if (nla_len(attr) < sizeof(mode)) return -EINVAL; mode = nla_get_u16(attr); status = ixgbe_configure_bridge_mode(adapter, mode); if (status) return status; break; } return 0; } static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, u32 filter_mask, int nlflags) { struct ixgbe_adapter *adapter = netdev_priv(dev); if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) return 0; return ndo_dflt_bridge_getlink(skb, pid, seq, dev, adapter->bridge_mode, 0, 0, nlflags, filter_mask, NULL); } static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev) { struct ixgbe_adapter *adapter = netdev_priv(pdev); struct ixgbe_fwd_adapter *accel; int tcs = adapter->hw_tcs ? : 1; int pool, err; if (adapter->xdp_prog) { e_warn(probe, "L2FW offload is not supported with XDP\n"); return ERR_PTR(-EINVAL); } /* The hardware supported by ixgbe only filters on the destination MAC * address. In order to avoid issues we only support offloading modes * where the hardware can actually provide the functionality. */ if (!macvlan_supports_dest_filter(vdev)) return ERR_PTR(-EMEDIUMTYPE); /* We need to lock down the macvlan to be a single queue device so that * we can reuse the tc_to_txq field in the macvlan netdev to represent * the queue mapping to our netdev. */ if (netif_is_multiqueue(vdev)) return ERR_PTR(-ERANGE); pool = find_first_zero_bit(adapter->fwd_bitmask, adapter->num_rx_pools); if (pool == adapter->num_rx_pools) { u16 used_pools = adapter->num_vfs + adapter->num_rx_pools; u16 reserved_pools; if (((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && adapter->num_rx_pools >= (MAX_TX_QUEUES / tcs)) || adapter->num_rx_pools > IXGBE_MAX_MACVLANS) return ERR_PTR(-EBUSY); /* Hardware has a limited number of available pools. Each VF, * and the PF require a pool. Check to ensure we don't * attempt to use more then the available number of pools. */ if (used_pools >= IXGBE_MAX_VF_FUNCTIONS) return ERR_PTR(-EBUSY); /* Enable VMDq flag so device will be set in VM mode */ adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED | IXGBE_FLAG_SRIOV_ENABLED; /* Try to reserve as many queues per pool as possible, * we start with the configurations that support 4 queues * per pools, followed by 2, and then by just 1 per pool. */ if (used_pools < 32 && adapter->num_rx_pools < 16) reserved_pools = min_t(u16, 32 - used_pools, 16 - adapter->num_rx_pools); else if (adapter->num_rx_pools < 32) reserved_pools = min_t(u16, 64 - used_pools, 32 - adapter->num_rx_pools); else reserved_pools = 64 - used_pools; if (!reserved_pools) return ERR_PTR(-EBUSY); adapter->ring_feature[RING_F_VMDQ].limit += reserved_pools; /* Force reinit of ring allocation with VMDQ enabled */ err = ixgbe_setup_tc(pdev, adapter->hw_tcs); if (err) return ERR_PTR(err); if (pool >= adapter->num_rx_pools) return ERR_PTR(-ENOMEM); } accel = kzalloc(sizeof(*accel), GFP_KERNEL); if (!accel) return ERR_PTR(-ENOMEM); set_bit(pool, adapter->fwd_bitmask); netdev_set_sb_channel(vdev, pool); accel->pool = pool; accel->netdev = vdev; if (!netif_running(pdev)) return accel; err = ixgbe_fwd_ring_up(adapter, accel); if (err) return ERR_PTR(err); return accel; } static void ixgbe_fwd_del(struct net_device *pdev, void *priv) { struct ixgbe_fwd_adapter *accel = priv; struct ixgbe_adapter *adapter = netdev_priv(pdev); unsigned int rxbase = accel->rx_base_queue; unsigned int i; /* delete unicast filter associated with offloaded interface */ ixgbe_del_mac_filter(adapter, accel->netdev->dev_addr, VMDQ_P(accel->pool)); /* Allow remaining Rx packets to get flushed out of the * Rx FIFO before we drop the netdev for the ring. */ usleep_range(10000, 20000); for (i = 0; i < adapter->num_rx_queues_per_pool; i++) { struct ixgbe_ring *ring = adapter->rx_ring[rxbase + i]; struct ixgbe_q_vector *qv = ring->q_vector; /* Make sure we aren't processing any packets and clear * netdev to shut down the ring. */ if (netif_running(adapter->netdev)) napi_synchronize(&qv->napi); ring->netdev = NULL; } /* unbind the queues and drop the subordinate channel config */ netdev_unbind_sb_channel(pdev, accel->netdev); netdev_set_sb_channel(accel->netdev, 0); clear_bit(accel->pool, adapter->fwd_bitmask); kfree(accel); } #define IXGBE_MAX_MAC_HDR_LEN 127 #define IXGBE_MAX_NETWORK_HDR_LEN 511 static netdev_features_t ixgbe_features_check(struct sk_buff *skb, struct net_device *dev, netdev_features_t features) { unsigned int network_hdr_len, mac_hdr_len; /* Make certain the headers can be described by a context descriptor */ mac_hdr_len = skb_network_header(skb) - skb->data; if (unlikely(mac_hdr_len > IXGBE_MAX_MAC_HDR_LEN)) return features & ~(NETIF_F_HW_CSUM | NETIF_F_SCTP_CRC | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_TSO | NETIF_F_TSO6); network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb); if (unlikely(network_hdr_len > IXGBE_MAX_NETWORK_HDR_LEN)) return features & ~(NETIF_F_HW_CSUM | NETIF_F_SCTP_CRC | NETIF_F_TSO | NETIF_F_TSO6); /* We can only support IPV4 TSO in tunnels if we can mangle the * inner IP ID field, so strip TSO if MANGLEID is not supported. * IPsec offoad sets skb->encapsulation but still can handle * the TSO, so it's the exception. */ if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) { #ifdef CONFIG_IXGBE_IPSEC if (!secpath_exists(skb)) #endif features &= ~NETIF_F_TSO; } return features; } static int ixgbe_xdp_setup(struct net_device *dev, struct bpf_prog *prog) { int i, frame_size = dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; struct ixgbe_adapter *adapter = netdev_priv(dev); struct bpf_prog *old_prog; bool need_reset; if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) return -EINVAL; if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) return -EINVAL; /* verify ixgbe ring attributes are sufficient for XDP */ for (i = 0; i < adapter->num_rx_queues; i++) { struct ixgbe_ring *ring = adapter->rx_ring[i]; if (ring_is_rsc_enabled(ring)) return -EINVAL; if (frame_size > ixgbe_rx_bufsz(ring)) return -EINVAL; } if (nr_cpu_ids > MAX_XDP_QUEUES) return -ENOMEM; old_prog = xchg(&adapter->xdp_prog, prog); need_reset = (!!prog != !!old_prog); /* If transitioning XDP modes reconfigure rings */ if (need_reset) { int err = ixgbe_setup_tc(dev, adapter->hw_tcs); if (err) { rcu_assign_pointer(adapter->xdp_prog, old_prog); return -EINVAL; } } else { for (i = 0; i < adapter->num_rx_queues; i++) (void)xchg(&adapter->rx_ring[i]->xdp_prog, adapter->xdp_prog); } if (old_prog) bpf_prog_put(old_prog); /* Kick start the NAPI context if there is an AF_XDP socket open * on that queue id. This so that receiving will start. */ if (need_reset && prog) for (i = 0; i < adapter->num_rx_queues; i++) if (adapter->xdp_ring[i]->xsk_umem) (void)ixgbe_xsk_async_xmit(adapter->netdev, i); return 0; } static int ixgbe_xdp(struct net_device *dev, struct netdev_bpf *xdp) { struct ixgbe_adapter *adapter = netdev_priv(dev); switch (xdp->command) { case XDP_SETUP_PROG: return ixgbe_xdp_setup(dev, xdp->prog); case XDP_QUERY_PROG: xdp->prog_id = adapter->xdp_prog ? adapter->xdp_prog->aux->id : 0; return 0; case XDP_QUERY_XSK_UMEM: return ixgbe_xsk_umem_query(adapter, &xdp->xsk.umem, xdp->xsk.queue_id); case XDP_SETUP_XSK_UMEM: return ixgbe_xsk_umem_setup(adapter, xdp->xsk.umem, xdp->xsk.queue_id); default: return -EINVAL; } } void ixgbe_xdp_ring_update_tail(struct ixgbe_ring *ring) { /* Force memory writes to complete before letting h/w know there * are new descriptors to fetch. */ wmb(); writel(ring->next_to_use, ring->tail); } static int ixgbe_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames, u32 flags) { struct ixgbe_adapter *adapter = netdev_priv(dev); struct ixgbe_ring *ring; int drops = 0; int i; if (unlikely(test_bit(__IXGBE_DOWN, &adapter->state))) return -ENETDOWN; if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) return -EINVAL; /* During program transitions its possible adapter->xdp_prog is assigned * but ring has not been configured yet. In this case simply abort xmit. */ ring = adapter->xdp_prog ? adapter->xdp_ring[smp_processor_id()] : NULL; if (unlikely(!ring)) return -ENXIO; if (unlikely(test_bit(__IXGBE_TX_DISABLED, &ring->state))) return -ENXIO; for (i = 0; i < n; i++) { struct xdp_frame *xdpf = frames[i]; int err; err = ixgbe_xmit_xdp_ring(adapter, xdpf); if (err != IXGBE_XDP_TX) { xdp_return_frame_rx_napi(xdpf); drops++; } } if (unlikely(flags & XDP_XMIT_FLUSH)) ixgbe_xdp_ring_update_tail(ring); return n - drops; } static const struct net_device_ops ixgbe_netdev_ops = { .ndo_open = ixgbe_open, .ndo_stop = ixgbe_close, .ndo_start_xmit = ixgbe_xmit_frame, .ndo_set_rx_mode = ixgbe_set_rx_mode, .ndo_validate_addr = eth_validate_addr, .ndo_set_mac_address = ixgbe_set_mac, .ndo_change_mtu = ixgbe_change_mtu, .ndo_tx_timeout = ixgbe_tx_timeout, .ndo_set_tx_maxrate = ixgbe_tx_maxrate, .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid, .ndo_do_ioctl = ixgbe_ioctl, .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac, .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan, .ndo_set_vf_rate = ixgbe_ndo_set_vf_bw, .ndo_set_vf_spoofchk = ixgbe_ndo_set_vf_spoofchk, .ndo_set_vf_rss_query_en = ixgbe_ndo_set_vf_rss_query_en, .ndo_set_vf_trust = ixgbe_ndo_set_vf_trust, .ndo_get_vf_config = ixgbe_ndo_get_vf_config, .ndo_get_stats64 = ixgbe_get_stats64, .ndo_setup_tc = __ixgbe_setup_tc, #ifdef IXGBE_FCOE .ndo_select_queue = ixgbe_select_queue, .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get, .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target, .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put, .ndo_fcoe_enable = ixgbe_fcoe_enable, .ndo_fcoe_disable = ixgbe_fcoe_disable, .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn, .ndo_fcoe_get_hbainfo = ixgbe_fcoe_get_hbainfo, #endif /* IXGBE_FCOE */ .ndo_set_features = ixgbe_set_features, .ndo_fix_features = ixgbe_fix_features, .ndo_fdb_add = ixgbe_ndo_fdb_add, .ndo_bridge_setlink = ixgbe_ndo_bridge_setlink, .ndo_bridge_getlink = ixgbe_ndo_bridge_getlink, .ndo_dfwd_add_station = ixgbe_fwd_add, .ndo_dfwd_del_station = ixgbe_fwd_del, .ndo_udp_tunnel_add = ixgbe_add_udp_tunnel_port, .ndo_udp_tunnel_del = ixgbe_del_udp_tunnel_port, .ndo_features_check = ixgbe_features_check, .ndo_bpf = ixgbe_xdp, .ndo_xdp_xmit = ixgbe_xdp_xmit, .ndo_xsk_async_xmit = ixgbe_xsk_async_xmit, }; static void ixgbe_disable_txr_hw(struct ixgbe_adapter *adapter, struct ixgbe_ring *tx_ring) { unsigned long wait_delay, delay_interval; struct ixgbe_hw *hw = &adapter->hw; u8 reg_idx = tx_ring->reg_idx; int wait_loop; u32 txdctl; IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); /* delay mechanism from ixgbe_disable_tx */ delay_interval = ixgbe_get_completion_timeout(adapter) / 100; wait_loop = IXGBE_MAX_RX_DESC_POLL; wait_delay = delay_interval; while (wait_loop--) { usleep_range(wait_delay, wait_delay + 10); wait_delay += delay_interval * 2; txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); if (!(txdctl & IXGBE_TXDCTL_ENABLE)) return; } e_err(drv, "TXDCTL.ENABLE not cleared within the polling period\n"); } static void ixgbe_disable_txr(struct ixgbe_adapter *adapter, struct ixgbe_ring *tx_ring) { set_bit(__IXGBE_TX_DISABLED, &tx_ring->state); ixgbe_disable_txr_hw(adapter, tx_ring); } static void ixgbe_disable_rxr_hw(struct ixgbe_adapter *adapter, struct ixgbe_ring *rx_ring) { unsigned long wait_delay, delay_interval; struct ixgbe_hw *hw = &adapter->hw; u8 reg_idx = rx_ring->reg_idx; int wait_loop; u32 rxdctl; rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); rxdctl &= ~IXGBE_RXDCTL_ENABLE; rxdctl |= IXGBE_RXDCTL_SWFLSH; /* write value back with RXDCTL.ENABLE bit cleared */ IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); /* RXDCTL.EN may not change on 82598 if link is down, so skip it */ if (hw->mac.type == ixgbe_mac_82598EB && !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) return; /* delay mechanism from ixgbe_disable_rx */ delay_interval = ixgbe_get_completion_timeout(adapter) / 100; wait_loop = IXGBE_MAX_RX_DESC_POLL; wait_delay = delay_interval; while (wait_loop--) { usleep_range(wait_delay, wait_delay + 10); wait_delay += delay_interval * 2; rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); if (!(rxdctl & IXGBE_RXDCTL_ENABLE)) return; } e_err(drv, "RXDCTL.ENABLE not cleared within the polling period\n"); } static void ixgbe_reset_txr_stats(struct ixgbe_ring *tx_ring) { memset(&tx_ring->stats, 0, sizeof(tx_ring->stats)); memset(&tx_ring->tx_stats, 0, sizeof(tx_ring->tx_stats)); } static void ixgbe_reset_rxr_stats(struct ixgbe_ring *rx_ring) { memset(&rx_ring->stats, 0, sizeof(rx_ring->stats)); memset(&rx_ring->rx_stats, 0, sizeof(rx_ring->rx_stats)); } /** * ixgbe_txrx_ring_disable - Disable Rx/Tx/XDP Tx rings * @adapter: adapter structure * @ring: ring index * * This function disables a certain Rx/Tx/XDP Tx ring. The function * assumes that the netdev is running. **/ void ixgbe_txrx_ring_disable(struct ixgbe_adapter *adapter, int ring) { struct ixgbe_ring *rx_ring, *tx_ring, *xdp_ring; rx_ring = adapter->rx_ring[ring]; tx_ring = adapter->tx_ring[ring]; xdp_ring = adapter->xdp_ring[ring]; ixgbe_disable_txr(adapter, tx_ring); if (xdp_ring) ixgbe_disable_txr(adapter, xdp_ring); ixgbe_disable_rxr_hw(adapter, rx_ring); if (xdp_ring) synchronize_rcu(); /* Rx/Tx/XDP Tx share the same napi context. */ napi_disable(&rx_ring->q_vector->napi); ixgbe_clean_tx_ring(tx_ring); if (xdp_ring) ixgbe_clean_tx_ring(xdp_ring); ixgbe_clean_rx_ring(rx_ring); ixgbe_reset_txr_stats(tx_ring); if (xdp_ring) ixgbe_reset_txr_stats(xdp_ring); ixgbe_reset_rxr_stats(rx_ring); } /** * ixgbe_txrx_ring_enable - Enable Rx/Tx/XDP Tx rings * @adapter: adapter structure * @ring: ring index * * This function enables a certain Rx/Tx/XDP Tx ring. The function * assumes that the netdev is running. **/ void ixgbe_txrx_ring_enable(struct ixgbe_adapter *adapter, int ring) { struct ixgbe_ring *rx_ring, *tx_ring, *xdp_ring; rx_ring = adapter->rx_ring[ring]; tx_ring = adapter->tx_ring[ring]; xdp_ring = adapter->xdp_ring[ring]; /* Rx/Tx/XDP Tx share the same napi context. */ napi_enable(&rx_ring->q_vector->napi); ixgbe_configure_tx_ring(adapter, tx_ring); if (xdp_ring) ixgbe_configure_tx_ring(adapter, xdp_ring); ixgbe_configure_rx_ring(adapter, rx_ring); clear_bit(__IXGBE_TX_DISABLED, &tx_ring->state); if (xdp_ring) clear_bit(__IXGBE_TX_DISABLED, &xdp_ring->state); } /** * ixgbe_enumerate_functions - Get the number of ports this device has * @adapter: adapter structure * * This function enumerates the phsyical functions co-located on a single slot, * in order to determine how many ports a device has. This is most useful in * determining the required GT/s of PCIe bandwidth necessary for optimal * performance. **/ static inline int ixgbe_enumerate_functions(struct ixgbe_adapter *adapter) { struct pci_dev *entry, *pdev = adapter->pdev; int physfns = 0; /* Some cards can not use the generic count PCIe functions method, * because they are behind a parent switch, so we hardcode these with * the correct number of functions. */ if (ixgbe_pcie_from_parent(&adapter->hw)) physfns = 4; list_for_each_entry(entry, &adapter->pdev->bus->devices, bus_list) { /* don't count virtual functions */ if (entry->is_virtfn) continue; /* When the devices on the bus don't all match our device ID, * we can't reliably determine the correct number of * functions. This can occur if a function has been direct * attached to a virtual machine using VT-d, for example. In * this case, simply return -1 to indicate this. */ if ((entry->vendor != pdev->vendor) || (entry->device != pdev->device)) return -1; physfns++; } return physfns; } /** * ixgbe_wol_supported - Check whether device supports WoL * @adapter: the adapter private structure * @device_id: the device ID * @subdevice_id: the subsystem device ID * * This function is used by probe and ethtool to determine * which devices have WoL support * **/ bool ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id, u16 subdevice_id) { struct ixgbe_hw *hw = &adapter->hw; u16 wol_cap = adapter->eeprom_cap & IXGBE_DEVICE_CAPS_WOL_MASK; /* WOL not supported on 82598 */ if (hw->mac.type == ixgbe_mac_82598EB) return false; /* check eeprom to see if WOL is enabled for X540 and newer */ if (hw->mac.type >= ixgbe_mac_X540) { if ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0_1) || ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0) && (hw->bus.func == 0))) return true; } /* WOL is determined based on device IDs for 82599 MACs */ switch (device_id) { case IXGBE_DEV_ID_82599_SFP: /* Only these subdevices could supports WOL */ switch (subdevice_id) { case IXGBE_SUBDEV_ID_82599_560FLR: case IXGBE_SUBDEV_ID_82599_LOM_SNAP6: case IXGBE_SUBDEV_ID_82599_SFP_WOL0: case IXGBE_SUBDEV_ID_82599_SFP_2OCP: /* only support first port */ if (hw->bus.func != 0) break; /* fall through */ case IXGBE_SUBDEV_ID_82599_SP_560FLR: case IXGBE_SUBDEV_ID_82599_SFP: case IXGBE_SUBDEV_ID_82599_RNDC: case IXGBE_SUBDEV_ID_82599_ECNA_DP: case IXGBE_SUBDEV_ID_82599_SFP_1OCP: case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM1: case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM2: return true; } break; case IXGBE_DEV_ID_82599EN_SFP: /* Only these subdevices support WOL */ switch (subdevice_id) { case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1: return true; } break; case IXGBE_DEV_ID_82599_COMBO_BACKPLANE: /* All except this subdevice support WOL */ if (subdevice_id != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ) return true; break; case IXGBE_DEV_ID_82599_KX4: return true; default: break; } return false; } /** * ixgbe_set_fw_version - Set FW version * @adapter: the adapter private structure * * This function is used by probe and ethtool to determine the FW version to * format to display. The FW version is taken from the EEPROM/NVM. */ static void ixgbe_set_fw_version(struct ixgbe_adapter *adapter) { struct ixgbe_hw *hw = &adapter->hw; struct ixgbe_nvm_version nvm_ver; ixgbe_get_oem_prod_version(hw, &nvm_ver); if (nvm_ver.oem_valid) { snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), "%x.%x.%x", nvm_ver.oem_major, nvm_ver.oem_minor, nvm_ver.oem_release); return; } ixgbe_get_etk_id(hw, &nvm_ver); ixgbe_get_orom_version(hw, &nvm_ver); if (nvm_ver.or_valid) { snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), "0x%08x, %d.%d.%d", nvm_ver.etk_id, nvm_ver.or_major, nvm_ver.or_build, nvm_ver.or_patch); return; } /* Set ETrack ID format */ snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), "0x%08x", nvm_ver.etk_id); } /** * ixgbe_probe - Device Initialization Routine * @pdev: PCI device information struct * @ent: entry in ixgbe_pci_tbl * * Returns 0 on success, negative on failure * * ixgbe_probe initializes an adapter identified by a pci_dev structure. * The OS initialization, configuring of the adapter private structure, * and a hardware reset occur. **/ static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct net_device *netdev; struct ixgbe_adapter *adapter = NULL; struct ixgbe_hw *hw; const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; int i, err, pci_using_dac, expected_gts; unsigned int indices = MAX_TX_QUEUES; u8 part_str[IXGBE_PBANUM_LENGTH]; bool disable_dev = false; #ifdef IXGBE_FCOE u16 device_caps; #endif u32 eec; /* Catch broken hardware that put the wrong VF device ID in * the PCIe SR-IOV capability. */ if (pdev->is_virtfn) { WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", pci_name(pdev), pdev->vendor, pdev->device); return -EINVAL; } err = pci_enable_device_mem(pdev); if (err) return err; if (!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) { pci_using_dac = 1; } else { err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); if (err) { dev_err(&pdev->dev, "No usable DMA configuration, aborting\n"); goto err_dma; } pci_using_dac = 0; } err = pci_request_mem_regions(pdev, ixgbe_driver_name); if (err) { dev_err(&pdev->dev, "pci_request_selected_regions failed 0x%x\n", err); goto err_pci_reg; } pci_enable_pcie_error_reporting(pdev); pci_set_master(pdev); pci_save_state(pdev); if (ii->mac == ixgbe_mac_82598EB) { #ifdef CONFIG_IXGBE_DCB /* 8 TC w/ 4 queues per TC */ indices = 4 * MAX_TRAFFIC_CLASS; #else indices = IXGBE_MAX_RSS_INDICES; #endif } netdev = alloc_etherdev_mq(sizeof(struct ixgbe_adapter), indices); if (!netdev) { err = -ENOMEM; goto err_alloc_etherdev; } SET_NETDEV_DEV(netdev, &pdev->dev); adapter = netdev_priv(netdev); adapter->netdev = netdev; adapter->pdev = pdev; hw = &adapter->hw; hw->back = adapter; adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); hw->hw_addr = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); adapter->io_addr = hw->hw_addr; if (!hw->hw_addr) { err = -EIO; goto err_ioremap; } netdev->netdev_ops = &ixgbe_netdev_ops; ixgbe_set_ethtool_ops(netdev); netdev->watchdog_timeo = 5 * HZ; strlcpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); /* Setup hw api */ hw->mac.ops = *ii->mac_ops; hw->mac.type = ii->mac; hw->mvals = ii->mvals; if (ii->link_ops) hw->link.ops = *ii->link_ops; /* EEPROM */ hw->eeprom.ops = *ii->eeprom_ops; eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); if (ixgbe_removed(hw->hw_addr)) { err = -EIO; goto err_ioremap; } /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */ if (!(eec & BIT(8))) hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic; /* PHY */ hw->phy.ops = *ii->phy_ops; hw->phy.sfp_type = ixgbe_sfp_type_unknown; /* ixgbe_identify_phy_generic will set prtad and mmds properly */ hw->phy.mdio.prtad = MDIO_PRTAD_NONE; hw->phy.mdio.mmds = 0; hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; hw->phy.mdio.dev = netdev; hw->phy.mdio.mdio_read = ixgbe_mdio_read; hw->phy.mdio.mdio_write = ixgbe_mdio_write; /* setup the private structure */ err = ixgbe_sw_init(adapter, ii); if (err) goto err_sw_init; /* Make sure the SWFW semaphore is in a valid state */ if (hw->mac.ops.init_swfw_sync) hw->mac.ops.init_swfw_sync(hw); /* Make it possible the adapter to be woken up via WOL */ switch (adapter->hw.mac.type) { case ixgbe_mac_82599EB: case ixgbe_mac_X540: case ixgbe_mac_X550: case ixgbe_mac_X550EM_x: case ixgbe_mac_x550em_a: IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); break; default: break; } /* * If there is a fan on this device and it has failed log the * failure. */ if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); if (esdp & IXGBE_ESDP_SDP1) e_crit(probe, "Fan has stopped, replace the adapter\n"); } if (allow_unsupported_sfp) hw->allow_unsupported_sfp = allow_unsupported_sfp; /* reset_hw fills in the perm_addr as well */ hw->phy.reset_if_overtemp = true; err = hw->mac.ops.reset_hw(hw); hw->phy.reset_if_overtemp = false; ixgbe_set_eee_capable(adapter); if (err == IXGBE_ERR_SFP_NOT_PRESENT) { err = 0; } else if (err == IXGBE_ERR_SFP_NOT_SUPPORTED) { e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n"); e_dev_err("Reload the driver after installing a supported module.\n"); goto err_sw_init; } else if (err) { e_dev_err("HW Init failed: %d\n", err); goto err_sw_init; } #ifdef CONFIG_PCI_IOV /* SR-IOV not supported on the 82598 */ if (adapter->hw.mac.type == ixgbe_mac_82598EB) goto skip_sriov; /* Mailbox */ ixgbe_init_mbx_params_pf(hw); hw->mbx.ops = ii->mbx_ops; pci_sriov_set_totalvfs(pdev, IXGBE_MAX_VFS_DRV_LIMIT); ixgbe_enable_sriov(adapter, max_vfs); skip_sriov: #endif netdev->features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_RXHASH | NETIF_F_RXCSUM | NETIF_F_HW_CSUM; #define IXGBE_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \ NETIF_F_GSO_GRE_CSUM | \ NETIF_F_GSO_IPXIP4 | \ NETIF_F_GSO_IPXIP6 | \ NETIF_F_GSO_UDP_TUNNEL | \ NETIF_F_GSO_UDP_TUNNEL_CSUM) netdev->gso_partial_features = IXGBE_GSO_PARTIAL_FEATURES; netdev->features |= NETIF_F_GSO_PARTIAL | IXGBE_GSO_PARTIAL_FEATURES; if (hw->mac.type >= ixgbe_mac_82599EB) netdev->features |= NETIF_F_SCTP_CRC; #ifdef CONFIG_IXGBE_IPSEC #define IXGBE_ESP_FEATURES (NETIF_F_HW_ESP | \ NETIF_F_HW_ESP_TX_CSUM | \ NETIF_F_GSO_ESP) if (adapter->ipsec) netdev->features |= IXGBE_ESP_FEATURES; #endif /* copy netdev features into list of user selectable features */ netdev->hw_features |= netdev->features | NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_RXALL | NETIF_F_HW_L2FW_DOFFLOAD; if (hw->mac.type >= ixgbe_mac_82599EB) netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC; if (pci_using_dac) netdev->features |= NETIF_F_HIGHDMA; netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; netdev->hw_enc_features |= netdev->vlan_features; netdev->mpls_features |= NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_HW_CSUM; netdev->mpls_features |= IXGBE_GSO_PARTIAL_FEATURES; /* set this bit last since it cannot be part of vlan_features */ netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX; netdev->priv_flags |= IFF_UNICAST_FLT; netdev->priv_flags |= IFF_SUPP_NOFCS; /* MTU range: 68 - 9710 */ netdev->min_mtu = ETH_MIN_MTU; netdev->max_mtu = IXGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN); #ifdef CONFIG_IXGBE_DCB if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE) netdev->dcbnl_ops = &ixgbe_dcbnl_ops; #endif #ifdef IXGBE_FCOE if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) { unsigned int fcoe_l; if (hw->mac.ops.get_device_caps) { hw->mac.ops.get_device_caps(hw, &device_caps); if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS) adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; } fcoe_l = min_t(int, IXGBE_FCRETA_SIZE, num_online_cpus()); adapter->ring_feature[RING_F_FCOE].limit = fcoe_l; netdev->features |= NETIF_F_FSO | NETIF_F_FCOE_CRC; netdev->vlan_features |= NETIF_F_FSO | NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU; } #endif /* IXGBE_FCOE */ if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) netdev->hw_features |= NETIF_F_LRO; if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) netdev->features |= NETIF_F_LRO; if (ixgbe_check_fw_error(adapter)) { err = -EIO; goto err_sw_init; } /* make sure the EEPROM is good */ if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) { e_dev_err("The EEPROM Checksum Is Not Valid\n"); err = -EIO; goto err_sw_init; } eth_platform_get_mac_address(&adapter->pdev->dev, adapter->hw.mac.perm_addr); memcpy(netdev->dev_addr, hw->mac.perm_addr, netdev->addr_len); if (!is_valid_ether_addr(netdev->dev_addr)) { e_dev_err("invalid MAC address\n"); err = -EIO; goto err_sw_init; } /* Set hw->mac.addr to permanent MAC address */ ether_addr_copy(hw->mac.addr, hw->mac.perm_addr); ixgbe_mac_set_default_filter(adapter); timer_setup(&adapter->service_timer, ixgbe_service_timer, 0); if (ixgbe_removed(hw->hw_addr)) { err = -EIO; goto err_sw_init; } INIT_WORK(&adapter->service_task, ixgbe_service_task); set_bit(__IXGBE_SERVICE_INITED, &adapter->state); clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); err = ixgbe_init_interrupt_scheme(adapter); if (err) goto err_sw_init; for (i = 0; i < adapter->num_rx_queues; i++) u64_stats_init(&adapter->rx_ring[i]->syncp); for (i = 0; i < adapter->num_tx_queues; i++) u64_stats_init(&adapter->tx_ring[i]->syncp); for (i = 0; i < adapter->num_xdp_queues; i++) u64_stats_init(&adapter->xdp_ring[i]->syncp); /* WOL not supported for all devices */ adapter->wol = 0; hw->eeprom.ops.read(hw, 0x2c, &adapter->eeprom_cap); hw->wol_enabled = ixgbe_wol_supported(adapter, pdev->device, pdev->subsystem_device); if (hw->wol_enabled) adapter->wol = IXGBE_WUFC_MAG; device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); /* save off EEPROM version number */ ixgbe_set_fw_version(adapter); /* pick up the PCI bus settings for reporting later */ if (ixgbe_pcie_from_parent(hw)) ixgbe_get_parent_bus_info(adapter); else hw->mac.ops.get_bus_info(hw); /* calculate the expected PCIe bandwidth required for optimal * performance. Note that some older parts will never have enough * bandwidth due to being older generation PCIe parts. We clamp these * parts to ensure no warning is displayed if it can't be fixed. */ switch (hw->mac.type) { case ixgbe_mac_82598EB: expected_gts = min(ixgbe_enumerate_functions(adapter) * 10, 16); break; default: expected_gts = ixgbe_enumerate_functions(adapter) * 10; break; } /* don't check link if we failed to enumerate functions */ if (expected_gts > 0) ixgbe_check_minimum_link(adapter, expected_gts); err = ixgbe_read_pba_string_generic(hw, part_str, sizeof(part_str)); if (err) strlcpy(part_str, "Unknown", sizeof(part_str)); if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present) e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n", hw->mac.type, hw->phy.type, hw->phy.sfp_type, part_str); else e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n", hw->mac.type, hw->phy.type, part_str); e_dev_info("%pM\n", netdev->dev_addr); /* reset the hardware with the new settings */ err = hw->mac.ops.start_hw(hw); if (err == IXGBE_ERR_EEPROM_VERSION) { /* We are running on a pre-production device, log a warning */ e_dev_warn("This device is a pre-production adapter/LOM. " "Please be aware there may be issues associated " "with your hardware. If you are experiencing " "problems please contact your Intel or hardware " "representative who provided you with this " "hardware.\n"); } strcpy(netdev->name, "eth%d"); pci_set_drvdata(pdev, adapter); err = register_netdev(netdev); if (err) goto err_register; /* power down the optics for 82599 SFP+ fiber */ if (hw->mac.ops.disable_tx_laser) hw->mac.ops.disable_tx_laser(hw); /* carrier off reporting is important to ethtool even BEFORE open */ netif_carrier_off(netdev); #ifdef CONFIG_IXGBE_DCA if (dca_add_requester(&pdev->dev) == 0) { adapter->flags |= IXGBE_FLAG_DCA_ENABLED; ixgbe_setup_dca(adapter); } #endif if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs); for (i = 0; i < adapter->num_vfs; i++) ixgbe_vf_configuration(pdev, (i | 0x10000000)); } /* firmware requires driver version to be 0xFFFFFFFF * since os does not support feature */ if (hw->mac.ops.set_fw_drv_ver) hw->mac.ops.set_fw_drv_ver(hw, 0xFF, 0xFF, 0xFF, 0xFF, sizeof(ixgbe_driver_version) - 1, ixgbe_driver_version); /* add san mac addr to netdev */ ixgbe_add_sanmac_netdev(netdev); e_dev_info("%s\n", ixgbe_default_device_descr); #ifdef CONFIG_IXGBE_HWMON if (ixgbe_sysfs_init(adapter)) e_err(probe, "failed to allocate sysfs resources\n"); #endif /* CONFIG_IXGBE_HWMON */ ixgbe_dbg_adapter_init(adapter); /* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */ if (ixgbe_mng_enabled(hw) && ixgbe_is_sfp(hw) && hw->mac.ops.setup_link) hw->mac.ops.setup_link(hw, IXGBE_LINK_SPEED_10GB_FULL | IXGBE_LINK_SPEED_1GB_FULL, true); ixgbe_mii_bus_init(hw); return 0; err_register: ixgbe_release_hw_control(adapter); ixgbe_clear_interrupt_scheme(adapter); err_sw_init: ixgbe_disable_sriov(adapter); adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; iounmap(adapter->io_addr); kfree(adapter->jump_tables[0]); kfree(adapter->mac_table); kfree(adapter->rss_key); err_ioremap: disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); free_netdev(netdev); err_alloc_etherdev: pci_release_mem_regions(pdev); err_pci_reg: err_dma: if (!adapter || disable_dev) pci_disable_device(pdev); return err; } /** * ixgbe_remove - Device Removal Routine * @pdev: PCI device information struct * * ixgbe_remove is called by the PCI subsystem to alert the driver * that it should release a PCI device. The could be caused by a * Hot-Plug event, or because the driver is going to be removed from * memory. **/ static void ixgbe_remove(struct pci_dev *pdev) { struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); struct net_device *netdev; bool disable_dev; int i; /* if !adapter then we already cleaned up in probe */ if (!adapter) return; netdev = adapter->netdev; ixgbe_dbg_adapter_exit(adapter); set_bit(__IXGBE_REMOVING, &adapter->state); cancel_work_sync(&adapter->service_task); if (adapter->mii_bus) mdiobus_unregister(adapter->mii_bus); #ifdef CONFIG_IXGBE_DCA if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; dca_remove_requester(&pdev->dev); IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, IXGBE_DCA_CTRL_DCA_DISABLE); } #endif #ifdef CONFIG_IXGBE_HWMON ixgbe_sysfs_exit(adapter); #endif /* CONFIG_IXGBE_HWMON */ /* remove the added san mac */ ixgbe_del_sanmac_netdev(netdev); #ifdef CONFIG_PCI_IOV ixgbe_disable_sriov(adapter); #endif if (netdev->reg_state == NETREG_REGISTERED) unregister_netdev(netdev); ixgbe_stop_ipsec_offload(adapter); ixgbe_clear_interrupt_scheme(adapter); ixgbe_release_hw_control(adapter); #ifdef CONFIG_DCB kfree(adapter->ixgbe_ieee_pfc); kfree(adapter->ixgbe_ieee_ets); #endif iounmap(adapter->io_addr); pci_release_mem_regions(pdev); e_dev_info("complete\n"); for (i = 0; i < IXGBE_MAX_LINK_HANDLE; i++) { if (adapter->jump_tables[i]) { kfree(adapter->jump_tables[i]->input); kfree(adapter->jump_tables[i]->mask); } kfree(adapter->jump_tables[i]); } kfree(adapter->mac_table); kfree(adapter->rss_key); disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); free_netdev(netdev); pci_disable_pcie_error_reporting(pdev); if (disable_dev) pci_disable_device(pdev); } /** * ixgbe_io_error_detected - called when PCI error is detected * @pdev: Pointer to PCI device * @state: The current pci connection state * * This function is called after a PCI bus error affecting * this device has been detected. */ static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state) { struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); struct net_device *netdev = adapter->netdev; #ifdef CONFIG_PCI_IOV struct ixgbe_hw *hw = &adapter->hw; struct pci_dev *bdev, *vfdev; u32 dw0, dw1, dw2, dw3; int vf, pos; u16 req_id, pf_func; if (adapter->hw.mac.type == ixgbe_mac_82598EB || adapter->num_vfs == 0) goto skip_bad_vf_detection; bdev = pdev->bus->self; while (bdev && (pci_pcie_type(bdev) != PCI_EXP_TYPE_ROOT_PORT)) bdev = bdev->bus->self; if (!bdev) goto skip_bad_vf_detection; pos = pci_find_ext_capability(bdev, PCI_EXT_CAP_ID_ERR); if (!pos) goto skip_bad_vf_detection; dw0 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG); dw1 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 4); dw2 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 8); dw3 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 12); if (ixgbe_removed(hw->hw_addr)) goto skip_bad_vf_detection; req_id = dw1 >> 16; /* On the 82599 if bit 7 of the requestor ID is set then it's a VF */ if (!(req_id & 0x0080)) goto skip_bad_vf_detection; pf_func = req_id & 0x01; if ((pf_func & 1) == (pdev->devfn & 1)) { unsigned int device_id; vf = (req_id & 0x7F) >> 1; e_dev_err("VF %d has caused a PCIe error\n", vf); e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: " "%8.8x\tdw3: %8.8x\n", dw0, dw1, dw2, dw3); switch (adapter->hw.mac.type) { case ixgbe_mac_82599EB: device_id = IXGBE_82599_VF_DEVICE_ID; break; case ixgbe_mac_X540: device_id = IXGBE_X540_VF_DEVICE_ID; break; case ixgbe_mac_X550: device_id = IXGBE_DEV_ID_X550_VF; break; case ixgbe_mac_X550EM_x: device_id = IXGBE_DEV_ID_X550EM_X_VF; break; case ixgbe_mac_x550em_a: device_id = IXGBE_DEV_ID_X550EM_A_VF; break; default: device_id = 0; break; } /* Find the pci device of the offending VF */ vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, device_id, NULL); while (vfdev) { if (vfdev->devfn == (req_id & 0xFF)) break; vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, device_id, vfdev); } /* * There's a slim chance the VF could have been hot plugged, * so if it is no longer present we don't need to issue the * VFLR. Just clean up the AER in that case. */ if (vfdev) { pcie_flr(vfdev); /* Free device reference count */ pci_dev_put(vfdev); } } /* * Even though the error may have occurred on the other port * we still need to increment the vf error reference count for * both ports because the I/O resume function will be called * for both of them. */ adapter->vferr_refcount++; return PCI_ERS_RESULT_RECOVERED; skip_bad_vf_detection: #endif /* CONFIG_PCI_IOV */ if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) return PCI_ERS_RESULT_DISCONNECT; if (!netif_device_present(netdev)) return PCI_ERS_RESULT_DISCONNECT; rtnl_lock(); netif_device_detach(netdev); if (netif_running(netdev)) ixgbe_close_suspend(adapter); if (state == pci_channel_io_perm_failure) { rtnl_unlock(); return PCI_ERS_RESULT_DISCONNECT; } if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) pci_disable_device(pdev); rtnl_unlock(); /* Request a slot reset. */ return PCI_ERS_RESULT_NEED_RESET; } /** * ixgbe_io_slot_reset - called after the pci bus has been reset. * @pdev: Pointer to PCI device * * Restart the card from scratch, as if from a cold-boot. */ static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) { struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); pci_ers_result_t result; if (pci_enable_device_mem(pdev)) { e_err(probe, "Cannot re-enable PCI device after reset.\n"); result = PCI_ERS_RESULT_DISCONNECT; } else { smp_mb__before_atomic(); clear_bit(__IXGBE_DISABLED, &adapter->state); adapter->hw.hw_addr = adapter->io_addr; pci_set_master(pdev); pci_restore_state(pdev); pci_save_state(pdev); pci_wake_from_d3(pdev, false); ixgbe_reset(adapter); IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); result = PCI_ERS_RESULT_RECOVERED; } return result; } /** * ixgbe_io_resume - called when traffic can start flowing again. * @pdev: Pointer to PCI device * * This callback is called when the error recovery driver tells us that * its OK to resume normal operation. */ static void ixgbe_io_resume(struct pci_dev *pdev) { struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); struct net_device *netdev = adapter->netdev; #ifdef CONFIG_PCI_IOV if (adapter->vferr_refcount) { e_info(drv, "Resuming after VF err\n"); adapter->vferr_refcount--; return; } #endif rtnl_lock(); if (netif_running(netdev)) ixgbe_open(netdev); netif_device_attach(netdev); rtnl_unlock(); } static const struct pci_error_handlers ixgbe_err_handler = { .error_detected = ixgbe_io_error_detected, .slot_reset = ixgbe_io_slot_reset, .resume = ixgbe_io_resume, }; static struct pci_driver ixgbe_driver = { .name = ixgbe_driver_name, .id_table = ixgbe_pci_tbl, .probe = ixgbe_probe, .remove = ixgbe_remove, #ifdef CONFIG_PM .suspend = ixgbe_suspend, .resume = ixgbe_resume, #endif .shutdown = ixgbe_shutdown, .sriov_configure = ixgbe_pci_sriov_configure, .err_handler = &ixgbe_err_handler }; /** * ixgbe_init_module - Driver Registration Routine * * ixgbe_init_module is the first routine called when the driver is * loaded. All it does is register with the PCI subsystem. **/ static int __init ixgbe_init_module(void) { int ret; pr_info("%s - version %s\n", ixgbe_driver_string, ixgbe_driver_version); pr_info("%s\n", ixgbe_copyright); ixgbe_wq = create_singlethread_workqueue(ixgbe_driver_name); if (!ixgbe_wq) { pr_err("%s: Failed to create workqueue\n", ixgbe_driver_name); return -ENOMEM; } ixgbe_dbg_init(); ret = pci_register_driver(&ixgbe_driver); if (ret) { destroy_workqueue(ixgbe_wq); ixgbe_dbg_exit(); return ret; } #ifdef CONFIG_IXGBE_DCA dca_register_notify(&dca_notifier); #endif return 0; } module_init(ixgbe_init_module); /** * ixgbe_exit_module - Driver Exit Cleanup Routine * * ixgbe_exit_module is called just before the driver is removed * from memory. **/ static void __exit ixgbe_exit_module(void) { #ifdef CONFIG_IXGBE_DCA dca_unregister_notify(&dca_notifier); #endif pci_unregister_driver(&ixgbe_driver); ixgbe_dbg_exit(); if (ixgbe_wq) { destroy_workqueue(ixgbe_wq); ixgbe_wq = NULL; } } #ifdef CONFIG_IXGBE_DCA static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event, void *p) { int ret_val; ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event, __ixgbe_notify_dca); return ret_val ? NOTIFY_BAD : NOTIFY_DONE; } #endif /* CONFIG_IXGBE_DCA */ module_exit(ixgbe_exit_module); /* ixgbe_main.c */
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