| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Anirudh Venkataramanan | 10968 | 57.00% | 58 | 41.73% |
| Tony Nguyen | 2973 | 15.45% | 6 | 4.32% |
| Sudheer Mogilappagari | 1945 | 10.11% | 1 | 0.72% |
| Brett Creeley | 1416 | 7.36% | 21 | 15.11% |
| Md Fahad Iqbal Polash | 561 | 2.92% | 3 | 2.16% |
| Akeem G. Abodunrin | 467 | 2.43% | 6 | 4.32% |
| Paul Greenwalt | 191 | 0.99% | 2 | 1.44% |
| Dave Ertman | 175 | 0.91% | 9 | 6.47% |
| Bruce W Allan | 123 | 0.64% | 9 | 6.47% |
| Preethi Banala | 86 | 0.45% | 2 | 1.44% |
| Jesse Brandeburg | 86 | 0.45% | 4 | 2.88% |
| Paul M Stillwell Jr | 60 | 0.31% | 1 | 0.72% |
| Usha Ketineni | 58 | 0.30% | 2 | 1.44% |
| Mitch A Williams | 27 | 0.14% | 3 | 2.16% |
| Young_X | 26 | 0.14% | 1 | 0.72% |
| Hieu Tran | 17 | 0.09% | 1 | 0.72% |
| Lukasz Czapnik | 15 | 0.08% | 1 | 0.72% |
| Krzysztof Kazimierczak | 14 | 0.07% | 1 | 0.72% |
| Michal Swiatkowski | 14 | 0.07% | 2 | 1.44% |
| Petr Machata | 11 | 0.06% | 2 | 1.44% |
| Henry Tieman | 5 | 0.03% | 1 | 0.72% |
| Colin Ian King | 1 | 0.01% | 1 | 0.72% |
| Mauro Carvalho Chehab | 1 | 0.01% | 1 | 0.72% |
| Alan Brady | 1 | 0.01% | 1 | 0.72% |
| Total | 19241 | 139 |
// SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2018, Intel Corporation. */ /* Intel(R) Ethernet Connection E800 Series Linux Driver */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include "ice.h" #include "ice_lib.h" #include "ice_dcb_lib.h" #define DRV_VERSION_MAJOR 0 #define DRV_VERSION_MINOR 8 #define DRV_VERSION_BUILD 1 #define DRV_VERSION __stringify(DRV_VERSION_MAJOR) "." \ __stringify(DRV_VERSION_MINOR) "." \ __stringify(DRV_VERSION_BUILD) "-k" #define DRV_SUMMARY "Intel(R) Ethernet Connection E800 Series Linux Driver" const char ice_drv_ver[] = DRV_VERSION; static const char ice_driver_string[] = DRV_SUMMARY; static const char ice_copyright[] = "Copyright (c) 2018, Intel Corporation."; /* DDP Package file located in firmware search paths (e.g. /lib/firmware/) */ #define ICE_DDP_PKG_PATH "intel/ice/ddp/" #define ICE_DDP_PKG_FILE ICE_DDP_PKG_PATH "ice.pkg" MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); MODULE_DESCRIPTION(DRV_SUMMARY); MODULE_LICENSE("GPL v2"); MODULE_VERSION(DRV_VERSION); MODULE_FIRMWARE(ICE_DDP_PKG_FILE); static int debug = -1; module_param(debug, int, 0644); #ifndef CONFIG_DYNAMIC_DEBUG MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all), hw debug_mask (0x8XXXXXXX)"); #else MODULE_PARM_DESC(debug, "netif level (0=none,...,16=all)"); #endif /* !CONFIG_DYNAMIC_DEBUG */ static struct workqueue_struct *ice_wq; static const struct net_device_ops ice_netdev_safe_mode_ops; static const struct net_device_ops ice_netdev_ops; static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type); static void ice_vsi_release_all(struct ice_pf *pf); /** * ice_get_tx_pending - returns number of Tx descriptors not processed * @ring: the ring of descriptors */ static u16 ice_get_tx_pending(struct ice_ring *ring) { u16 head, tail; head = ring->next_to_clean; tail = ring->next_to_use; if (head != tail) return (head < tail) ? tail - head : (tail + ring->count - head); return 0; } /** * ice_check_for_hang_subtask - check for and recover hung queues * @pf: pointer to PF struct */ static void ice_check_for_hang_subtask(struct ice_pf *pf) { struct ice_vsi *vsi = NULL; struct ice_hw *hw; unsigned int i; int packets; u32 v; ice_for_each_vsi(pf, v) if (pf->vsi[v] && pf->vsi[v]->type == ICE_VSI_PF) { vsi = pf->vsi[v]; break; } if (!vsi || test_bit(__ICE_DOWN, vsi->state)) return; if (!(vsi->netdev && netif_carrier_ok(vsi->netdev))) return; hw = &vsi->back->hw; for (i = 0; i < vsi->num_txq; i++) { struct ice_ring *tx_ring = vsi->tx_rings[i]; if (tx_ring && tx_ring->desc) { /* If packet counter has not changed the queue is * likely stalled, so force an interrupt for this * queue. * * prev_pkt would be negative if there was no * pending work. */ packets = tx_ring->stats.pkts & INT_MAX; if (tx_ring->tx_stats.prev_pkt == packets) { /* Trigger sw interrupt to revive the queue */ ice_trigger_sw_intr(hw, tx_ring->q_vector); continue; } /* Memory barrier between read of packet count and call * to ice_get_tx_pending() */ smp_rmb(); tx_ring->tx_stats.prev_pkt = ice_get_tx_pending(tx_ring) ? packets : -1; } } } /** * ice_init_mac_fltr - Set initial MAC filters * @pf: board private structure * * Set initial set of MAC filters for PF VSI; configure filters for permanent * address and broadcast address. If an error is encountered, netdevice will be * unregistered. */ static int ice_init_mac_fltr(struct ice_pf *pf) { enum ice_status status; u8 broadcast[ETH_ALEN]; struct ice_vsi *vsi; vsi = ice_get_main_vsi(pf); if (!vsi) return -EINVAL; /* To add a MAC filter, first add the MAC to a list and then * pass the list to ice_add_mac. */ /* Add a unicast MAC filter so the VSI can get its packets */ status = ice_vsi_cfg_mac_fltr(vsi, vsi->port_info->mac.perm_addr, true); if (status) goto unregister; /* VSI needs to receive broadcast traffic, so add the broadcast * MAC address to the list as well. */ eth_broadcast_addr(broadcast); status = ice_vsi_cfg_mac_fltr(vsi, broadcast, true); if (status) goto unregister; return 0; unregister: /* We aren't useful with no MAC filters, so unregister if we * had an error */ if (status && vsi->netdev->reg_state == NETREG_REGISTERED) { dev_err(&pf->pdev->dev, "Could not add MAC filters error %d. Unregistering device\n", status); unregister_netdev(vsi->netdev); free_netdev(vsi->netdev); vsi->netdev = NULL; } return -EIO; } /** * ice_add_mac_to_sync_list - creates list of MAC addresses to be synced * @netdev: the net device on which the sync is happening * @addr: MAC address to sync * * This is a callback function which is called by the in kernel device sync * functions (like __dev_uc_sync, __dev_mc_sync, etc). This function only * populates the tmp_sync_list, which is later used by ice_add_mac to add the * MAC filters from the hardware. */ static int ice_add_mac_to_sync_list(struct net_device *netdev, const u8 *addr) { struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; if (ice_add_mac_to_list(vsi, &vsi->tmp_sync_list, addr)) return -EINVAL; return 0; } /** * ice_add_mac_to_unsync_list - creates list of MAC addresses to be unsynced * @netdev: the net device on which the unsync is happening * @addr: MAC address to unsync * * This is a callback function which is called by the in kernel device unsync * functions (like __dev_uc_unsync, __dev_mc_unsync, etc). This function only * populates the tmp_unsync_list, which is later used by ice_remove_mac to * delete the MAC filters from the hardware. */ static int ice_add_mac_to_unsync_list(struct net_device *netdev, const u8 *addr) { struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; if (ice_add_mac_to_list(vsi, &vsi->tmp_unsync_list, addr)) return -EINVAL; return 0; } /** * ice_vsi_fltr_changed - check if filter state changed * @vsi: VSI to be checked * * returns true if filter state has changed, false otherwise. */ static bool ice_vsi_fltr_changed(struct ice_vsi *vsi) { return test_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags) || test_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags) || test_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags); } /** * ice_cfg_promisc - Enable or disable promiscuous mode for a given PF * @vsi: the VSI being configured * @promisc_m: mask of promiscuous config bits * @set_promisc: enable or disable promisc flag request * */ static int ice_cfg_promisc(struct ice_vsi *vsi, u8 promisc_m, bool set_promisc) { struct ice_hw *hw = &vsi->back->hw; enum ice_status status = 0; if (vsi->type != ICE_VSI_PF) return 0; if (vsi->vlan_ena) { status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m, set_promisc); } else { if (set_promisc) status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m, 0); else status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m, 0); } if (status) return -EIO; return 0; } /** * ice_vsi_sync_fltr - Update the VSI filter list to the HW * @vsi: ptr to the VSI * * Push any outstanding VSI filter changes through the AdminQ. */ static int ice_vsi_sync_fltr(struct ice_vsi *vsi) { struct device *dev = &vsi->back->pdev->dev; struct net_device *netdev = vsi->netdev; bool promisc_forced_on = false; struct ice_pf *pf = vsi->back; struct ice_hw *hw = &pf->hw; enum ice_status status = 0; u32 changed_flags = 0; u8 promisc_m; int err = 0; if (!vsi->netdev) return -EINVAL; while (test_and_set_bit(__ICE_CFG_BUSY, vsi->state)) usleep_range(1000, 2000); changed_flags = vsi->current_netdev_flags ^ vsi->netdev->flags; vsi->current_netdev_flags = vsi->netdev->flags; INIT_LIST_HEAD(&vsi->tmp_sync_list); INIT_LIST_HEAD(&vsi->tmp_unsync_list); if (ice_vsi_fltr_changed(vsi)) { clear_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags); clear_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags); clear_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags); /* grab the netdev's addr_list_lock */ netif_addr_lock_bh(netdev); __dev_uc_sync(netdev, ice_add_mac_to_sync_list, ice_add_mac_to_unsync_list); __dev_mc_sync(netdev, ice_add_mac_to_sync_list, ice_add_mac_to_unsync_list); /* our temp lists are populated. release lock */ netif_addr_unlock_bh(netdev); } /* Remove MAC addresses in the unsync list */ status = ice_remove_mac(hw, &vsi->tmp_unsync_list); ice_free_fltr_list(dev, &vsi->tmp_unsync_list); if (status) { netdev_err(netdev, "Failed to delete MAC filters\n"); /* if we failed because of alloc failures, just bail */ if (status == ICE_ERR_NO_MEMORY) { err = -ENOMEM; goto out; } } /* Add MAC addresses in the sync list */ status = ice_add_mac(hw, &vsi->tmp_sync_list); ice_free_fltr_list(dev, &vsi->tmp_sync_list); /* If filter is added successfully or already exists, do not go into * 'if' condition and report it as error. Instead continue processing * rest of the function. */ if (status && status != ICE_ERR_ALREADY_EXISTS) { netdev_err(netdev, "Failed to add MAC filters\n"); /* If there is no more space for new umac filters, VSI * should go into promiscuous mode. There should be some * space reserved for promiscuous filters. */ if (hw->adminq.sq_last_status == ICE_AQ_RC_ENOSPC && !test_and_set_bit(__ICE_FLTR_OVERFLOW_PROMISC, vsi->state)) { promisc_forced_on = true; netdev_warn(netdev, "Reached MAC filter limit, forcing promisc mode on VSI %d\n", vsi->vsi_num); } else { err = -EIO; goto out; } } /* check for changes in promiscuous modes */ if (changed_flags & IFF_ALLMULTI) { if (vsi->current_netdev_flags & IFF_ALLMULTI) { if (vsi->vlan_ena) promisc_m = ICE_MCAST_VLAN_PROMISC_BITS; else promisc_m = ICE_MCAST_PROMISC_BITS; err = ice_cfg_promisc(vsi, promisc_m, true); if (err) { netdev_err(netdev, "Error setting Multicast promiscuous mode on VSI %i\n", vsi->vsi_num); vsi->current_netdev_flags &= ~IFF_ALLMULTI; goto out_promisc; } } else if (!(vsi->current_netdev_flags & IFF_ALLMULTI)) { if (vsi->vlan_ena) promisc_m = ICE_MCAST_VLAN_PROMISC_BITS; else promisc_m = ICE_MCAST_PROMISC_BITS; err = ice_cfg_promisc(vsi, promisc_m, false); if (err) { netdev_err(netdev, "Error clearing Multicast promiscuous mode on VSI %i\n", vsi->vsi_num); vsi->current_netdev_flags |= IFF_ALLMULTI; goto out_promisc; } } } if (((changed_flags & IFF_PROMISC) || promisc_forced_on) || test_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags)) { clear_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags); if (vsi->current_netdev_flags & IFF_PROMISC) { /* Apply Rx filter rule to get traffic from wire */ status = ice_cfg_dflt_vsi(hw, vsi->idx, true, ICE_FLTR_RX); if (status) { netdev_err(netdev, "Error setting default VSI %i Rx rule\n", vsi->vsi_num); vsi->current_netdev_flags &= ~IFF_PROMISC; err = -EIO; goto out_promisc; } } else { /* Clear Rx filter to remove traffic from wire */ status = ice_cfg_dflt_vsi(hw, vsi->idx, false, ICE_FLTR_RX); if (status) { netdev_err(netdev, "Error clearing default VSI %i Rx rule\n", vsi->vsi_num); vsi->current_netdev_flags |= IFF_PROMISC; err = -EIO; goto out_promisc; } } } goto exit; out_promisc: set_bit(ICE_VSI_FLAG_PROMISC_CHANGED, vsi->flags); goto exit; out: /* if something went wrong then set the changed flag so we try again */ set_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags); set_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags); exit: clear_bit(__ICE_CFG_BUSY, vsi->state); return err; } /** * ice_sync_fltr_subtask - Sync the VSI filter list with HW * @pf: board private structure */ static void ice_sync_fltr_subtask(struct ice_pf *pf) { int v; if (!pf || !(test_bit(ICE_FLAG_FLTR_SYNC, pf->flags))) return; clear_bit(ICE_FLAG_FLTR_SYNC, pf->flags); ice_for_each_vsi(pf, v) if (pf->vsi[v] && ice_vsi_fltr_changed(pf->vsi[v]) && ice_vsi_sync_fltr(pf->vsi[v])) { /* come back and try again later */ set_bit(ICE_FLAG_FLTR_SYNC, pf->flags); break; } } /** * ice_dis_vsi - pause a VSI * @vsi: the VSI being paused * @locked: is the rtnl_lock already held */ static void ice_dis_vsi(struct ice_vsi *vsi, bool locked) { if (test_bit(__ICE_DOWN, vsi->state)) return; set_bit(__ICE_NEEDS_RESTART, vsi->state); if (vsi->type == ICE_VSI_PF && vsi->netdev) { if (netif_running(vsi->netdev)) { if (!locked) rtnl_lock(); ice_stop(vsi->netdev); if (!locked) rtnl_unlock(); } else { ice_vsi_close(vsi); } } } /** * ice_pf_dis_all_vsi - Pause all VSIs on a PF * @pf: the PF * @locked: is the rtnl_lock already held */ #ifdef CONFIG_DCB void ice_pf_dis_all_vsi(struct ice_pf *pf, bool locked) #else static void ice_pf_dis_all_vsi(struct ice_pf *pf, bool locked) #endif /* CONFIG_DCB */ { int v; ice_for_each_vsi(pf, v) if (pf->vsi[v]) ice_dis_vsi(pf->vsi[v], locked); } /** * ice_prepare_for_reset - prep for the core to reset * @pf: board private structure * * Inform or close all dependent features in prep for reset. */ static void ice_prepare_for_reset(struct ice_pf *pf) { struct ice_hw *hw = &pf->hw; int i; /* already prepared for reset */ if (test_bit(__ICE_PREPARED_FOR_RESET, pf->state)) return; /* Notify VFs of impending reset */ if (ice_check_sq_alive(hw, &hw->mailboxq)) ice_vc_notify_reset(pf); /* Disable VFs until reset is completed */ for (i = 0; i < pf->num_alloc_vfs; i++) ice_set_vf_state_qs_dis(&pf->vf[i]); /* clear SW filtering DB */ ice_clear_hw_tbls(hw); /* disable the VSIs and their queues that are not already DOWN */ ice_pf_dis_all_vsi(pf, false); if (hw->port_info) ice_sched_clear_port(hw->port_info); ice_shutdown_all_ctrlq(hw); set_bit(__ICE_PREPARED_FOR_RESET, pf->state); } /** * ice_do_reset - Initiate one of many types of resets * @pf: board private structure * @reset_type: reset type requested * before this function was called. */ static void ice_do_reset(struct ice_pf *pf, enum ice_reset_req reset_type) { struct device *dev = &pf->pdev->dev; struct ice_hw *hw = &pf->hw; dev_dbg(dev, "reset_type 0x%x requested\n", reset_type); WARN_ON(in_interrupt()); ice_prepare_for_reset(pf); /* trigger the reset */ if (ice_reset(hw, reset_type)) { dev_err(dev, "reset %d failed\n", reset_type); set_bit(__ICE_RESET_FAILED, pf->state); clear_bit(__ICE_RESET_OICR_RECV, pf->state); clear_bit(__ICE_PREPARED_FOR_RESET, pf->state); clear_bit(__ICE_PFR_REQ, pf->state); clear_bit(__ICE_CORER_REQ, pf->state); clear_bit(__ICE_GLOBR_REQ, pf->state); return; } /* PFR is a bit of a special case because it doesn't result in an OICR * interrupt. So for PFR, rebuild after the reset and clear the reset- * associated state bits. */ if (reset_type == ICE_RESET_PFR) { pf->pfr_count++; ice_rebuild(pf, reset_type); clear_bit(__ICE_PREPARED_FOR_RESET, pf->state); clear_bit(__ICE_PFR_REQ, pf->state); ice_reset_all_vfs(pf, true); } } /** * ice_reset_subtask - Set up for resetting the device and driver * @pf: board private structure */ static void ice_reset_subtask(struct ice_pf *pf) { enum ice_reset_req reset_type = ICE_RESET_INVAL; /* When a CORER/GLOBR/EMPR is about to happen, the hardware triggers an * OICR interrupt. The OICR handler (ice_misc_intr) determines what type * of reset is pending and sets bits in pf->state indicating the reset * type and __ICE_RESET_OICR_RECV. So, if the latter bit is set * prepare for pending reset if not already (for PF software-initiated * global resets the software should already be prepared for it as * indicated by __ICE_PREPARED_FOR_RESET; for global resets initiated * by firmware or software on other PFs, that bit is not set so prepare * for the reset now), poll for reset done, rebuild and return. */ if (test_bit(__ICE_RESET_OICR_RECV, pf->state)) { /* Perform the largest reset requested */ if (test_and_clear_bit(__ICE_CORER_RECV, pf->state)) reset_type = ICE_RESET_CORER; if (test_and_clear_bit(__ICE_GLOBR_RECV, pf->state)) reset_type = ICE_RESET_GLOBR; if (test_and_clear_bit(__ICE_EMPR_RECV, pf->state)) reset_type = ICE_RESET_EMPR; /* return if no valid reset type requested */ if (reset_type == ICE_RESET_INVAL) return; ice_prepare_for_reset(pf); /* make sure we are ready to rebuild */ if (ice_check_reset(&pf->hw)) { set_bit(__ICE_RESET_FAILED, pf->state); } else { /* done with reset. start rebuild */ pf->hw.reset_ongoing = false; ice_rebuild(pf, reset_type); /* clear bit to resume normal operations, but * ICE_NEEDS_RESTART bit is set in case rebuild failed */ clear_bit(__ICE_RESET_OICR_RECV, pf->state); clear_bit(__ICE_PREPARED_FOR_RESET, pf->state); clear_bit(__ICE_PFR_REQ, pf->state); clear_bit(__ICE_CORER_REQ, pf->state); clear_bit(__ICE_GLOBR_REQ, pf->state); ice_reset_all_vfs(pf, true); } return; } /* No pending resets to finish processing. Check for new resets */ if (test_bit(__ICE_PFR_REQ, pf->state)) reset_type = ICE_RESET_PFR; if (test_bit(__ICE_CORER_REQ, pf->state)) reset_type = ICE_RESET_CORER; if (test_bit(__ICE_GLOBR_REQ, pf->state)) reset_type = ICE_RESET_GLOBR; /* If no valid reset type requested just return */ if (reset_type == ICE_RESET_INVAL) return; /* reset if not already down or busy */ if (!test_bit(__ICE_DOWN, pf->state) && !test_bit(__ICE_CFG_BUSY, pf->state)) { ice_do_reset(pf, reset_type); } } /** * ice_print_topo_conflict - print topology conflict message * @vsi: the VSI whose topology status is being checked */ static void ice_print_topo_conflict(struct ice_vsi *vsi) { switch (vsi->port_info->phy.link_info.topo_media_conflict) { case ICE_AQ_LINK_TOPO_CONFLICT: case ICE_AQ_LINK_MEDIA_CONFLICT: netdev_info(vsi->netdev, "Possible mis-configuration of the Ethernet port detected, please use the Intel(R) Ethernet Port Configuration Tool application to address the issue.\n"); break; default: break; } } /** * ice_print_link_msg - print link up or down message * @vsi: the VSI whose link status is being queried * @isup: boolean for if the link is now up or down */ void ice_print_link_msg(struct ice_vsi *vsi, bool isup) { struct ice_aqc_get_phy_caps_data *caps; enum ice_status status; const char *fec_req; const char *speed; const char *fec; const char *fc; const char *an; if (!vsi) return; if (vsi->current_isup == isup) return; vsi->current_isup = isup; if (!isup) { netdev_info(vsi->netdev, "NIC Link is Down\n"); return; } switch (vsi->port_info->phy.link_info.link_speed) { case ICE_AQ_LINK_SPEED_100GB: speed = "100 G"; break; case ICE_AQ_LINK_SPEED_50GB: speed = "50 G"; break; case ICE_AQ_LINK_SPEED_40GB: speed = "40 G"; break; case ICE_AQ_LINK_SPEED_25GB: speed = "25 G"; break; case ICE_AQ_LINK_SPEED_20GB: speed = "20 G"; break; case ICE_AQ_LINK_SPEED_10GB: speed = "10 G"; break; case ICE_AQ_LINK_SPEED_5GB: speed = "5 G"; break; case ICE_AQ_LINK_SPEED_2500MB: speed = "2.5 G"; break; case ICE_AQ_LINK_SPEED_1000MB: speed = "1 G"; break; case ICE_AQ_LINK_SPEED_100MB: speed = "100 M"; break; default: speed = "Unknown"; break; } switch (vsi->port_info->fc.current_mode) { case ICE_FC_FULL: fc = "Rx/Tx"; break; case ICE_FC_TX_PAUSE: fc = "Tx"; break; case ICE_FC_RX_PAUSE: fc = "Rx"; break; case ICE_FC_NONE: fc = "None"; break; default: fc = "Unknown"; break; } /* Get FEC mode based on negotiated link info */ switch (vsi->port_info->phy.link_info.fec_info) { case ICE_AQ_LINK_25G_RS_528_FEC_EN: /* fall through */ case ICE_AQ_LINK_25G_RS_544_FEC_EN: fec = "RS-FEC"; break; case ICE_AQ_LINK_25G_KR_FEC_EN: fec = "FC-FEC/BASE-R"; break; default: fec = "NONE"; break; } /* check if autoneg completed, might be false due to not supported */ if (vsi->port_info->phy.link_info.an_info & ICE_AQ_AN_COMPLETED) an = "True"; else an = "False"; /* Get FEC mode requested based on PHY caps last SW configuration */ caps = devm_kzalloc(&vsi->back->pdev->dev, sizeof(*caps), GFP_KERNEL); if (!caps) { fec_req = "Unknown"; goto done; } status = ice_aq_get_phy_caps(vsi->port_info, false, ICE_AQC_REPORT_SW_CFG, caps, NULL); if (status) netdev_info(vsi->netdev, "Get phy capability failed.\n"); if (caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_528_REQ || caps->link_fec_options & ICE_AQC_PHY_FEC_25G_RS_544_REQ) fec_req = "RS-FEC"; else if (caps->link_fec_options & ICE_AQC_PHY_FEC_10G_KR_40G_KR4_REQ || caps->link_fec_options & ICE_AQC_PHY_FEC_25G_KR_REQ) fec_req = "FC-FEC/BASE-R"; else fec_req = "NONE"; devm_kfree(&vsi->back->pdev->dev, caps); done: netdev_info(vsi->netdev, "NIC Link is up %sbps, Requested FEC: %s, FEC: %s, Autoneg: %s, Flow Control: %s\n", speed, fec_req, fec, an, fc); ice_print_topo_conflict(vsi); } /** * ice_vsi_link_event - update the VSI's netdev * @vsi: the VSI on which the link event occurred * @link_up: whether or not the VSI needs to be set up or down */ static void ice_vsi_link_event(struct ice_vsi *vsi, bool link_up) { if (!vsi) return; if (test_bit(__ICE_DOWN, vsi->state) || !vsi->netdev) return; if (vsi->type == ICE_VSI_PF) { if (link_up == netif_carrier_ok(vsi->netdev)) return; if (link_up) { netif_carrier_on(vsi->netdev); netif_tx_wake_all_queues(vsi->netdev); } else { netif_carrier_off(vsi->netdev); netif_tx_stop_all_queues(vsi->netdev); } } } /** * ice_link_event - process the link event * @pf: PF that the link event is associated with * @pi: port_info for the port that the link event is associated with * @link_up: true if the physical link is up and false if it is down * @link_speed: current link speed received from the link event * * Returns 0 on success and negative on failure */ static int ice_link_event(struct ice_pf *pf, struct ice_port_info *pi, bool link_up, u16 link_speed) { struct ice_phy_info *phy_info; struct ice_vsi *vsi; u16 old_link_speed; bool old_link; int result; phy_info = &pi->phy; phy_info->link_info_old = phy_info->link_info; old_link = !!(phy_info->link_info_old.link_info & ICE_AQ_LINK_UP); old_link_speed = phy_info->link_info_old.link_speed; /* update the link info structures and re-enable link events, * don't bail on failure due to other book keeping needed */ result = ice_update_link_info(pi); if (result) dev_dbg(&pf->pdev->dev, "Failed to update link status and re-enable link events for port %d\n", pi->lport); /* if the old link up/down and speed is the same as the new */ if (link_up == old_link && link_speed == old_link_speed) return result; vsi = ice_get_main_vsi(pf); if (!vsi || !vsi->port_info) return -EINVAL; /* turn off PHY if media was removed */ if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags) && !(pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE)) { set_bit(ICE_FLAG_NO_MEDIA, pf->flags); result = ice_aq_set_link_restart_an(pi, false, NULL); if (result) { dev_dbg(&pf->pdev->dev, "Failed to set link down, VSI %d error %d\n", vsi->vsi_num, result); return result; } } ice_vsi_link_event(vsi, link_up); ice_print_link_msg(vsi, link_up); if (pf->num_alloc_vfs) ice_vc_notify_link_state(pf); return result; } /** * ice_watchdog_subtask - periodic tasks not using event driven scheduling * @pf: board private structure */ static void ice_watchdog_subtask(struct ice_pf *pf) { int i; /* if interface is down do nothing */ if (test_bit(__ICE_DOWN, pf->state) || test_bit(__ICE_CFG_BUSY, pf->state)) return; /* make sure we don't do these things too often */ if (time_before(jiffies, pf->serv_tmr_prev + pf->serv_tmr_period)) return; pf->serv_tmr_prev = jiffies; /* Update the stats for active netdevs so the network stack * can look at updated numbers whenever it cares to */ ice_update_pf_stats(pf); ice_for_each_vsi(pf, i) if (pf->vsi[i] && pf->vsi[i]->netdev) ice_update_vsi_stats(pf->vsi[i]); } /** * ice_init_link_events - enable/initialize link events * @pi: pointer to the port_info instance * * Returns -EIO on failure, 0 on success */ static int ice_init_link_events(struct ice_port_info *pi) { u16 mask; mask = ~((u16)(ICE_AQ_LINK_EVENT_UPDOWN | ICE_AQ_LINK_EVENT_MEDIA_NA | ICE_AQ_LINK_EVENT_MODULE_QUAL_FAIL)); if (ice_aq_set_event_mask(pi->hw, pi->lport, mask, NULL)) { dev_dbg(ice_hw_to_dev(pi->hw), "Failed to set link event mask for port %d\n", pi->lport); return -EIO; } if (ice_aq_get_link_info(pi, true, NULL, NULL)) { dev_dbg(ice_hw_to_dev(pi->hw), "Failed to enable link events for port %d\n", pi->lport); return -EIO; } return 0; } /** * ice_handle_link_event - handle link event via ARQ * @pf: PF that the link event is associated with * @event: event structure containing link status info */ static int ice_handle_link_event(struct ice_pf *pf, struct ice_rq_event_info *event) { struct ice_aqc_get_link_status_data *link_data; struct ice_port_info *port_info; int status; link_data = (struct ice_aqc_get_link_status_data *)event->msg_buf; port_info = pf->hw.port_info; if (!port_info) return -EINVAL; status = ice_link_event(pf, port_info, !!(link_data->link_info & ICE_AQ_LINK_UP), le16_to_cpu(link_data->link_speed)); if (status) dev_dbg(&pf->pdev->dev, "Could not process link event, error %d\n", status); return status; } /** * __ice_clean_ctrlq - helper function to clean controlq rings * @pf: ptr to struct ice_pf * @q_type: specific Control queue type */ static int __ice_clean_ctrlq(struct ice_pf *pf, enum ice_ctl_q q_type) { struct ice_rq_event_info event; struct ice_hw *hw = &pf->hw; struct ice_ctl_q_info *cq; u16 pending, i = 0; const char *qtype; u32 oldval, val; /* Do not clean control queue if/when PF reset fails */ if (test_bit(__ICE_RESET_FAILED, pf->state)) return 0; switch (q_type) { case ICE_CTL_Q_ADMIN: cq = &hw->adminq; qtype = "Admin"; break; case ICE_CTL_Q_MAILBOX: cq = &hw->mailboxq; qtype = "Mailbox"; break; default: dev_warn(&pf->pdev->dev, "Unknown control queue type 0x%x\n", q_type); return 0; } /* check for error indications - PF_xx_AxQLEN register layout for * FW/MBX/SB are identical so just use defines for PF_FW_AxQLEN. */ val = rd32(hw, cq->rq.len); if (val & (PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M | PF_FW_ARQLEN_ARQCRIT_M)) { oldval = val; if (val & PF_FW_ARQLEN_ARQVFE_M) dev_dbg(&pf->pdev->dev, "%s Receive Queue VF Error detected\n", qtype); if (val & PF_FW_ARQLEN_ARQOVFL_M) { dev_dbg(&pf->pdev->dev, "%s Receive Queue Overflow Error detected\n", qtype); } if (val & PF_FW_ARQLEN_ARQCRIT_M) dev_dbg(&pf->pdev->dev, "%s Receive Queue Critical Error detected\n", qtype); val &= ~(PF_FW_ARQLEN_ARQVFE_M | PF_FW_ARQLEN_ARQOVFL_M | PF_FW_ARQLEN_ARQCRIT_M); if (oldval != val) wr32(hw, cq->rq.len, val); } val = rd32(hw, cq->sq.len); if (val & (PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M | PF_FW_ATQLEN_ATQCRIT_M)) { oldval = val; if (val & PF_FW_ATQLEN_ATQVFE_M) dev_dbg(&pf->pdev->dev, "%s Send Queue VF Error detected\n", qtype); if (val & PF_FW_ATQLEN_ATQOVFL_M) { dev_dbg(&pf->pdev->dev, "%s Send Queue Overflow Error detected\n", qtype); } if (val & PF_FW_ATQLEN_ATQCRIT_M) dev_dbg(&pf->pdev->dev, "%s Send Queue Critical Error detected\n", qtype); val &= ~(PF_FW_ATQLEN_ATQVFE_M | PF_FW_ATQLEN_ATQOVFL_M | PF_FW_ATQLEN_ATQCRIT_M); if (oldval != val) wr32(hw, cq->sq.len, val); } event.buf_len = cq->rq_buf_size; event.msg_buf = devm_kzalloc(&pf->pdev->dev, event.buf_len, GFP_KERNEL); if (!event.msg_buf) return 0; do { enum ice_status ret; u16 opcode; ret = ice_clean_rq_elem(hw, cq, &event, &pending); if (ret == ICE_ERR_AQ_NO_WORK) break; if (ret) { dev_err(&pf->pdev->dev, "%s Receive Queue event error %d\n", qtype, ret); break; } opcode = le16_to_cpu(event.desc.opcode); switch (opcode) { case ice_aqc_opc_get_link_status: if (ice_handle_link_event(pf, &event)) dev_err(&pf->pdev->dev, "Could not handle link event\n"); break; case ice_mbx_opc_send_msg_to_pf: ice_vc_process_vf_msg(pf, &event); break; case ice_aqc_opc_fw_logging: ice_output_fw_log(hw, &event.desc, event.msg_buf); break; case ice_aqc_opc_lldp_set_mib_change: ice_dcb_process_lldp_set_mib_change(pf, &event); break; default: dev_dbg(&pf->pdev->dev, "%s Receive Queue unknown event 0x%04x ignored\n", qtype, opcode); break; } } while (pending && (i++ < ICE_DFLT_IRQ_WORK)); devm_kfree(&pf->pdev->dev, event.msg_buf); return pending && (i == ICE_DFLT_IRQ_WORK); } /** * ice_ctrlq_pending - check if there is a difference between ntc and ntu * @hw: pointer to hardware info * @cq: control queue information * * returns true if there are pending messages in a queue, false if there aren't */ static bool ice_ctrlq_pending(struct ice_hw *hw, struct ice_ctl_q_info *cq) { u16 ntu; ntu = (u16)(rd32(hw, cq->rq.head) & cq->rq.head_mask); return cq->rq.next_to_clean != ntu; } /** * ice_clean_adminq_subtask - clean the AdminQ rings * @pf: board private structure */ static void ice_clean_adminq_subtask(struct ice_pf *pf) { struct ice_hw *hw = &pf->hw; if (!test_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state)) return; if (__ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN)) return; clear_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state); /* There might be a situation where new messages arrive to a control * queue between processing the last message and clearing the * EVENT_PENDING bit. So before exiting, check queue head again (using * ice_ctrlq_pending) and process new messages if any. */ if (ice_ctrlq_pending(hw, &hw->adminq)) __ice_clean_ctrlq(pf, ICE_CTL_Q_ADMIN); ice_flush(hw); } /** * ice_clean_mailboxq_subtask - clean the MailboxQ rings * @pf: board private structure */ static void ice_clean_mailboxq_subtask(struct ice_pf *pf) { struct ice_hw *hw = &pf->hw; if (!test_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state)) return; if (__ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX)) return; clear_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state); if (ice_ctrlq_pending(hw, &hw->mailboxq)) __ice_clean_ctrlq(pf, ICE_CTL_Q_MAILBOX); ice_flush(hw); } /** * ice_service_task_schedule - schedule the service task to wake up * @pf: board private structure * * If not already scheduled, this puts the task into the work queue. */ static void ice_service_task_schedule(struct ice_pf *pf) { if (!test_bit(__ICE_SERVICE_DIS, pf->state) && !test_and_set_bit(__ICE_SERVICE_SCHED, pf->state) && !test_bit(__ICE_NEEDS_RESTART, pf->state)) queue_work(ice_wq, &pf->serv_task); } /** * ice_service_task_complete - finish up the service task * @pf: board private structure */ static void ice_service_task_complete(struct ice_pf *pf) { WARN_ON(!test_bit(__ICE_SERVICE_SCHED, pf->state)); /* force memory (pf->state) to sync before next service task */ smp_mb__before_atomic(); clear_bit(__ICE_SERVICE_SCHED, pf->state); } /** * ice_service_task_stop - stop service task and cancel works * @pf: board private structure */ static void ice_service_task_stop(struct ice_pf *pf) { set_bit(__ICE_SERVICE_DIS, pf->state); if (pf->serv_tmr.function) del_timer_sync(&pf->serv_tmr); if (pf->serv_task.func) cancel_work_sync(&pf->serv_task); clear_bit(__ICE_SERVICE_SCHED, pf->state); } /** * ice_service_task_restart - restart service task and schedule works * @pf: board private structure * * This function is needed for suspend and resume works (e.g WoL scenario) */ static void ice_service_task_restart(struct ice_pf *pf) { clear_bit(__ICE_SERVICE_DIS, pf->state); ice_service_task_schedule(pf); } /** * ice_service_timer - timer callback to schedule service task * @t: pointer to timer_list */ static void ice_service_timer(struct timer_list *t) { struct ice_pf *pf = from_timer(pf, t, serv_tmr); mod_timer(&pf->serv_tmr, round_jiffies(pf->serv_tmr_period + jiffies)); ice_service_task_schedule(pf); } /** * ice_handle_mdd_event - handle malicious driver detect event * @pf: pointer to the PF structure * * Called from service task. OICR interrupt handler indicates MDD event */ static void ice_handle_mdd_event(struct ice_pf *pf) { struct ice_hw *hw = &pf->hw; bool mdd_detected = false; u32 reg; int i; if (!test_and_clear_bit(__ICE_MDD_EVENT_PENDING, pf->state)) return; /* find what triggered the MDD event */ reg = rd32(hw, GL_MDET_TX_PQM); if (reg & GL_MDET_TX_PQM_VALID_M) { u8 pf_num = (reg & GL_MDET_TX_PQM_PF_NUM_M) >> GL_MDET_TX_PQM_PF_NUM_S; u16 vf_num = (reg & GL_MDET_TX_PQM_VF_NUM_M) >> GL_MDET_TX_PQM_VF_NUM_S; u8 event = (reg & GL_MDET_TX_PQM_MAL_TYPE_M) >> GL_MDET_TX_PQM_MAL_TYPE_S; u16 queue = ((reg & GL_MDET_TX_PQM_QNUM_M) >> GL_MDET_TX_PQM_QNUM_S); if (netif_msg_tx_err(pf)) dev_info(&pf->pdev->dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n", event, queue, pf_num, vf_num); wr32(hw, GL_MDET_TX_PQM, 0xffffffff); mdd_detected = true; } reg = rd32(hw, GL_MDET_TX_TCLAN); if (reg & GL_MDET_TX_TCLAN_VALID_M) { u8 pf_num = (reg & GL_MDET_TX_TCLAN_PF_NUM_M) >> GL_MDET_TX_TCLAN_PF_NUM_S; u16 vf_num = (reg & GL_MDET_TX_TCLAN_VF_NUM_M) >> GL_MDET_TX_TCLAN_VF_NUM_S; u8 event = (reg & GL_MDET_TX_TCLAN_MAL_TYPE_M) >> GL_MDET_TX_TCLAN_MAL_TYPE_S; u16 queue = ((reg & GL_MDET_TX_TCLAN_QNUM_M) >> GL_MDET_TX_TCLAN_QNUM_S); if (netif_msg_rx_err(pf)) dev_info(&pf->pdev->dev, "Malicious Driver Detection event %d on TX queue %d PF# %d VF# %d\n", event, queue, pf_num, vf_num); wr32(hw, GL_MDET_TX_TCLAN, 0xffffffff); mdd_detected = true; } reg = rd32(hw, GL_MDET_RX); if (reg & GL_MDET_RX_VALID_M) { u8 pf_num = (reg & GL_MDET_RX_PF_NUM_M) >> GL_MDET_RX_PF_NUM_S; u16 vf_num = (reg & GL_MDET_RX_VF_NUM_M) >> GL_MDET_RX_VF_NUM_S; u8 event = (reg & GL_MDET_RX_MAL_TYPE_M) >> GL_MDET_RX_MAL_TYPE_S; u16 queue = ((reg & GL_MDET_RX_QNUM_M) >> GL_MDET_RX_QNUM_S); if (netif_msg_rx_err(pf)) dev_info(&pf->pdev->dev, "Malicious Driver Detection event %d on RX queue %d PF# %d VF# %d\n", event, queue, pf_num, vf_num); wr32(hw, GL_MDET_RX, 0xffffffff); mdd_detected = true; } if (mdd_detected) { bool pf_mdd_detected = false; reg = rd32(hw, PF_MDET_TX_PQM); if (reg & PF_MDET_TX_PQM_VALID_M) { wr32(hw, PF_MDET_TX_PQM, 0xFFFF); dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n"); pf_mdd_detected = true; } reg = rd32(hw, PF_MDET_TX_TCLAN); if (reg & PF_MDET_TX_TCLAN_VALID_M) { wr32(hw, PF_MDET_TX_TCLAN, 0xFFFF); dev_info(&pf->pdev->dev, "TX driver issue detected, PF reset issued\n"); pf_mdd_detected = true; } reg = rd32(hw, PF_MDET_RX); if (reg & PF_MDET_RX_VALID_M) { wr32(hw, PF_MDET_RX, 0xFFFF); dev_info(&pf->pdev->dev, "RX driver issue detected, PF reset issued\n"); pf_mdd_detected = true; } /* Queue belongs to the PF initiate a reset */ if (pf_mdd_detected) { set_bit(__ICE_NEEDS_RESTART, pf->state); ice_service_task_schedule(pf); } } /* check to see if one of the VFs caused the MDD */ for (i = 0; i < pf->num_alloc_vfs; i++) { struct ice_vf *vf = &pf->vf[i]; bool vf_mdd_detected = false; reg = rd32(hw, VP_MDET_TX_PQM(i)); if (reg & VP_MDET_TX_PQM_VALID_M) { wr32(hw, VP_MDET_TX_PQM(i), 0xFFFF); vf_mdd_detected = true; dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n", i); } reg = rd32(hw, VP_MDET_TX_TCLAN(i)); if (reg & VP_MDET_TX_TCLAN_VALID_M) { wr32(hw, VP_MDET_TX_TCLAN(i), 0xFFFF); vf_mdd_detected = true; dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n", i); } reg = rd32(hw, VP_MDET_TX_TDPU(i)); if (reg & VP_MDET_TX_TDPU_VALID_M) { wr32(hw, VP_MDET_TX_TDPU(i), 0xFFFF); vf_mdd_detected = true; dev_info(&pf->pdev->dev, "TX driver issue detected on VF %d\n", i); } reg = rd32(hw, VP_MDET_RX(i)); if (reg & VP_MDET_RX_VALID_M) { wr32(hw, VP_MDET_RX(i), 0xFFFF); vf_mdd_detected = true; dev_info(&pf->pdev->dev, "RX driver issue detected on VF %d\n", i); } if (vf_mdd_detected) { vf->num_mdd_events++; if (vf->num_mdd_events && vf->num_mdd_events <= ICE_MDD_EVENTS_THRESHOLD) dev_info(&pf->pdev->dev, "VF %d has had %llu MDD events since last boot, Admin might need to reload AVF driver with this number of events\n", i, vf->num_mdd_events); } } } /** * ice_force_phys_link_state - Force the physical link state * @vsi: VSI to force the physical link state to up/down * @link_up: true/false indicates to set the physical link to up/down * * Force the physical link state by getting the current PHY capabilities from * hardware and setting the PHY config based on the determined capabilities. If * link changes a link event will be triggered because both the Enable Automatic * Link Update and LESM Enable bits are set when setting the PHY capabilities. * * Returns 0 on success, negative on failure */ static int ice_force_phys_link_state(struct ice_vsi *vsi, bool link_up) { struct ice_aqc_get_phy_caps_data *pcaps; struct ice_aqc_set_phy_cfg_data *cfg; struct ice_port_info *pi; struct device *dev; int retcode; if (!vsi || !vsi->port_info || !vsi->back) return -EINVAL; if (vsi->type != ICE_VSI_PF) return 0; dev = &vsi->back->pdev->dev; pi = vsi->port_info; pcaps = devm_kzalloc(dev, sizeof(*pcaps), GFP_KERNEL); if (!pcaps) return -ENOMEM; retcode = ice_aq_get_phy_caps(pi, false, ICE_AQC_REPORT_SW_CFG, pcaps, NULL); if (retcode) { dev_err(dev, "Failed to get phy capabilities, VSI %d error %d\n", vsi->vsi_num, retcode); retcode = -EIO; goto out; } /* No change in link */ if (link_up == !!(pcaps->caps & ICE_AQC_PHY_EN_LINK) && link_up == !!(pi->phy.link_info.link_info & ICE_AQ_LINK_UP)) goto out; cfg = devm_kzalloc(dev, sizeof(*cfg), GFP_KERNEL); if (!cfg) { retcode = -ENOMEM; goto out; } cfg->phy_type_low = pcaps->phy_type_low; cfg->phy_type_high = pcaps->phy_type_high; cfg->caps = pcaps->caps | ICE_AQ_PHY_ENA_AUTO_LINK_UPDT; cfg->low_power_ctrl = pcaps->low_power_ctrl; cfg->eee_cap = pcaps->eee_cap; cfg->eeer_value = pcaps->eeer_value; cfg->link_fec_opt = pcaps->link_fec_options; if (link_up) cfg->caps |= ICE_AQ_PHY_ENA_LINK; else cfg->caps &= ~ICE_AQ_PHY_ENA_LINK; retcode = ice_aq_set_phy_cfg(&vsi->back->hw, pi->lport, cfg, NULL); if (retcode) { dev_err(dev, "Failed to set phy config, VSI %d error %d\n", vsi->vsi_num, retcode); retcode = -EIO; } devm_kfree(dev, cfg); out: devm_kfree(dev, pcaps); return retcode; } /** * ice_check_media_subtask - Check for media; bring link up if detected. * @pf: pointer to PF struct */ static void ice_check_media_subtask(struct ice_pf *pf) { struct ice_port_info *pi; struct ice_vsi *vsi; int err; vsi = ice_get_main_vsi(pf); if (!vsi) return; /* No need to check for media if it's already present or the interface * is down */ if (!test_bit(ICE_FLAG_NO_MEDIA, pf->flags) || test_bit(__ICE_DOWN, vsi->state)) return; /* Refresh link info and check if media is present */ pi = vsi->port_info; err = ice_update_link_info(pi); if (err) return; if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) { err = ice_force_phys_link_state(vsi, true); if (err) return; clear_bit(ICE_FLAG_NO_MEDIA, pf->flags); /* A Link Status Event will be generated; the event handler * will complete bringing the interface up */ } } /** * ice_service_task - manage and run subtasks * @work: pointer to work_struct contained by the PF struct */ static void ice_service_task(struct work_struct *work) { struct ice_pf *pf = container_of(work, struct ice_pf, serv_task); unsigned long start_time = jiffies; /* subtasks */ /* process reset requests first */ ice_reset_subtask(pf); /* bail if a reset/recovery cycle is pending or rebuild failed */ if (ice_is_reset_in_progress(pf->state) || test_bit(__ICE_SUSPENDED, pf->state) || test_bit(__ICE_NEEDS_RESTART, pf->state)) { ice_service_task_complete(pf); return; } ice_clean_adminq_subtask(pf); ice_check_media_subtask(pf); ice_check_for_hang_subtask(pf); ice_sync_fltr_subtask(pf); ice_handle_mdd_event(pf); ice_watchdog_subtask(pf); if (ice_is_safe_mode(pf)) { ice_service_task_complete(pf); return; } ice_process_vflr_event(pf); ice_clean_mailboxq_subtask(pf); /* Clear __ICE_SERVICE_SCHED flag to allow scheduling next event */ ice_service_task_complete(pf); /* If the tasks have taken longer than one service timer period * or there is more work to be done, reset the service timer to * schedule the service task now. */ if (time_after(jiffies, (start_time + pf->serv_tmr_period)) || test_bit(__ICE_MDD_EVENT_PENDING, pf->state) || test_bit(__ICE_VFLR_EVENT_PENDING, pf->state) || test_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state) || test_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state)) mod_timer(&pf->serv_tmr, jiffies); } /** * ice_set_ctrlq_len - helper function to set controlq length * @hw: pointer to the HW instance */ static void ice_set_ctrlq_len(struct ice_hw *hw) { hw->adminq.num_rq_entries = ICE_AQ_LEN; hw->adminq.num_sq_entries = ICE_AQ_LEN; hw->adminq.rq_buf_size = ICE_AQ_MAX_BUF_LEN; hw->adminq.sq_buf_size = ICE_AQ_MAX_BUF_LEN; hw->mailboxq.num_rq_entries = ICE_MBXRQ_LEN; hw->mailboxq.num_sq_entries = ICE_MBXSQ_LEN; hw->mailboxq.rq_buf_size = ICE_MBXQ_MAX_BUF_LEN; hw->mailboxq.sq_buf_size = ICE_MBXQ_MAX_BUF_LEN; } /** * ice_irq_affinity_notify - Callback for affinity changes * @notify: context as to what irq was changed * @mask: the new affinity mask * * This is a callback function used by the irq_set_affinity_notifier function * so that we may register to receive changes to the irq affinity masks. */ static void ice_irq_affinity_notify(struct irq_affinity_notify *notify, const cpumask_t *mask) { struct ice_q_vector *q_vector = container_of(notify, struct ice_q_vector, affinity_notify); cpumask_copy(&q_vector->affinity_mask, mask); } /** * ice_irq_affinity_release - Callback for affinity notifier release * @ref: internal core kernel usage * * This is a callback function used by the irq_set_affinity_notifier function * to inform the current notification subscriber that they will no longer * receive notifications. */ static void ice_irq_affinity_release(struct kref __always_unused *ref) {} /** * ice_vsi_ena_irq - Enable IRQ for the given VSI * @vsi: the VSI being configured */ static int ice_vsi_ena_irq(struct ice_vsi *vsi) { struct ice_hw *hw = &vsi->back->hw; int i; ice_for_each_q_vector(vsi, i) ice_irq_dynamic_ena(hw, vsi, vsi->q_vectors[i]); ice_flush(hw); return 0; } /** * ice_vsi_req_irq_msix - get MSI-X vectors from the OS for the VSI * @vsi: the VSI being configured * @basename: name for the vector */ static int ice_vsi_req_irq_msix(struct ice_vsi *vsi, char *basename) { int q_vectors = vsi->num_q_vectors; struct ice_pf *pf = vsi->back; int base = vsi->base_vector; int rx_int_idx = 0; int tx_int_idx = 0; int vector, err; int irq_num; for (vector = 0; vector < q_vectors; vector++) { struct ice_q_vector *q_vector = vsi->q_vectors[vector]; irq_num = pf->msix_entries[base + vector].vector; if (q_vector->tx.ring && q_vector->rx.ring) { snprintf(q_vector->name, sizeof(q_vector->name) - 1, "%s-%s-%d", basename, "TxRx", rx_int_idx++); tx_int_idx++; } else if (q_vector->rx.ring) { snprintf(q_vector->name, sizeof(q_vector->name) - 1, "%s-%s-%d", basename, "rx", rx_int_idx++); } else if (q_vector->tx.ring) { snprintf(q_vector->name, sizeof(q_vector->name) - 1, "%s-%s-%d", basename, "tx", tx_int_idx++); } else { /* skip this unused q_vector */ continue; } err = devm_request_irq(&pf->pdev->dev, irq_num, vsi->irq_handler, 0, q_vector->name, q_vector); if (err) { netdev_err(vsi->netdev, "MSIX request_irq failed, error: %d\n", err); goto free_q_irqs; } /* register for affinity change notifications */ q_vector->affinity_notify.notify = ice_irq_affinity_notify; q_vector->affinity_notify.release = ice_irq_affinity_release; irq_set_affinity_notifier(irq_num, &q_vector->affinity_notify); /* assign the mask for this irq */ irq_set_affinity_hint(irq_num, &q_vector->affinity_mask); } vsi->irqs_ready = true; return 0; free_q_irqs: while (vector) { vector--; irq_num = pf->msix_entries[base + vector].vector, irq_set_affinity_notifier(irq_num, NULL); irq_set_affinity_hint(irq_num, NULL); devm_free_irq(&pf->pdev->dev, irq_num, &vsi->q_vectors[vector]); } return err; } /** * ice_ena_misc_vector - enable the non-queue interrupts * @pf: board private structure */ static void ice_ena_misc_vector(struct ice_pf *pf) { struct ice_hw *hw = &pf->hw; u32 val; /* clear things first */ wr32(hw, PFINT_OICR_ENA, 0); /* disable all */ rd32(hw, PFINT_OICR); /* read to clear */ val = (PFINT_OICR_ECC_ERR_M | PFINT_OICR_MAL_DETECT_M | PFINT_OICR_GRST_M | PFINT_OICR_PCI_EXCEPTION_M | PFINT_OICR_VFLR_M | PFINT_OICR_HMC_ERR_M | PFINT_OICR_PE_CRITERR_M); wr32(hw, PFINT_OICR_ENA, val); /* SW_ITR_IDX = 0, but don't change INTENA */ wr32(hw, GLINT_DYN_CTL(pf->oicr_idx), GLINT_DYN_CTL_SW_ITR_INDX_M | GLINT_DYN_CTL_INTENA_MSK_M); } /** * ice_misc_intr - misc interrupt handler * @irq: interrupt number * @data: pointer to a q_vector */ static irqreturn_t ice_misc_intr(int __always_unused irq, void *data) { struct ice_pf *pf = (struct ice_pf *)data; struct ice_hw *hw = &pf->hw; irqreturn_t ret = IRQ_NONE; u32 oicr, ena_mask; set_bit(__ICE_ADMINQ_EVENT_PENDING, pf->state); set_bit(__ICE_MAILBOXQ_EVENT_PENDING, pf->state); oicr = rd32(hw, PFINT_OICR); ena_mask = rd32(hw, PFINT_OICR_ENA); if (oicr & PFINT_OICR_SWINT_M) { ena_mask &= ~PFINT_OICR_SWINT_M; pf->sw_int_count++; } if (oicr & PFINT_OICR_MAL_DETECT_M) { ena_mask &= ~PFINT_OICR_MAL_DETECT_M; set_bit(__ICE_MDD_EVENT_PENDING, pf->state); } if (oicr & PFINT_OICR_VFLR_M) { ena_mask &= ~PFINT_OICR_VFLR_M; set_bit(__ICE_VFLR_EVENT_PENDING, pf->state); } if (oicr & PFINT_OICR_GRST_M) { u32 reset; /* we have a reset warning */ ena_mask &= ~PFINT_OICR_GRST_M; reset = (rd32(hw, GLGEN_RSTAT) & GLGEN_RSTAT_RESET_TYPE_M) >> GLGEN_RSTAT_RESET_TYPE_S; if (reset == ICE_RESET_CORER) pf->corer_count++; else if (reset == ICE_RESET_GLOBR) pf->globr_count++; else if (reset == ICE_RESET_EMPR) pf->empr_count++; else dev_dbg(&pf->pdev->dev, "Invalid reset type %d\n", reset); /* If a reset cycle isn't already in progress, we set a bit in * pf->state so that the service task can start a reset/rebuild. * We also make note of which reset happened so that peer * devices/drivers can be informed. */ if (!test_and_set_bit(__ICE_RESET_OICR_RECV, pf->state)) { if (reset == ICE_RESET_CORER) set_bit(__ICE_CORER_RECV, pf->state); else if (reset == ICE_RESET_GLOBR) set_bit(__ICE_GLOBR_RECV, pf->state); else set_bit(__ICE_EMPR_RECV, pf->state); /* There are couple of different bits at play here. * hw->reset_ongoing indicates whether the hardware is * in reset. This is set to true when a reset interrupt * is received and set back to false after the driver * has determined that the hardware is out of reset. * * __ICE_RESET_OICR_RECV in pf->state indicates * that a post reset rebuild is required before the * driver is operational again. This is set above. * * As this is the start of the reset/rebuild cycle, set * both to indicate that. */ hw->reset_ongoing = true; } } if (oicr & PFINT_OICR_HMC_ERR_M) { ena_mask &= ~PFINT_OICR_HMC_ERR_M; dev_dbg(&pf->pdev->dev, "HMC Error interrupt - info 0x%x, data 0x%x\n", rd32(hw, PFHMC_ERRORINFO), rd32(hw, PFHMC_ERRORDATA)); } /* Report any remaining unexpected interrupts */ oicr &= ena_mask; if (oicr) { dev_dbg(&pf->pdev->dev, "unhandled interrupt oicr=0x%08x\n", oicr); /* If a critical error is pending there is no choice but to * reset the device. */ if (oicr & (PFINT_OICR_PE_CRITERR_M | PFINT_OICR_PCI_EXCEPTION_M | PFINT_OICR_ECC_ERR_M)) { set_bit(__ICE_PFR_REQ, pf->state); ice_service_task_schedule(pf); } } ret = IRQ_HANDLED; if (!test_bit(__ICE_DOWN, pf->state)) { ice_service_task_schedule(pf); ice_irq_dynamic_ena(hw, NULL, NULL); } return ret; } /** * ice_dis_ctrlq_interrupts - disable control queue interrupts * @hw: pointer to HW structure */ static void ice_dis_ctrlq_interrupts(struct ice_hw *hw) { /* disable Admin queue Interrupt causes */ wr32(hw, PFINT_FW_CTL, rd32(hw, PFINT_FW_CTL) & ~PFINT_FW_CTL_CAUSE_ENA_M); /* disable Mailbox queue Interrupt causes */ wr32(hw, PFINT_MBX_CTL, rd32(hw, PFINT_MBX_CTL) & ~PFINT_MBX_CTL_CAUSE_ENA_M); /* disable Control queue Interrupt causes */ wr32(hw, PFINT_OICR_CTL, rd32(hw, PFINT_OICR_CTL) & ~PFINT_OICR_CTL_CAUSE_ENA_M); ice_flush(hw); } /** * ice_free_irq_msix_misc - Unroll misc vector setup * @pf: board private structure */ static void ice_free_irq_msix_misc(struct ice_pf *pf) { struct ice_hw *hw = &pf->hw; ice_dis_ctrlq_interrupts(hw); /* disable OICR interrupt */ wr32(hw, PFINT_OICR_ENA, 0); ice_flush(hw); if (pf->msix_entries) { synchronize_irq(pf->msix_entries[pf->oicr_idx].vector); devm_free_irq(&pf->pdev->dev, pf->msix_entries[pf->oicr_idx].vector, pf); } pf->num_avail_sw_msix += 1; ice_free_res(pf->irq_tracker, pf->oicr_idx, ICE_RES_MISC_VEC_ID); } /** * ice_ena_ctrlq_interrupts - enable control queue interrupts * @hw: pointer to HW structure * @reg_idx: HW vector index to associate the control queue interrupts with */ static void ice_ena_ctrlq_interrupts(struct ice_hw *hw, u16 reg_idx) { u32 val; val = ((reg_idx & PFINT_OICR_CTL_MSIX_INDX_M) | PFINT_OICR_CTL_CAUSE_ENA_M); wr32(hw, PFINT_OICR_CTL, val); /* enable Admin queue Interrupt causes */ val = ((reg_idx & PFINT_FW_CTL_MSIX_INDX_M) | PFINT_FW_CTL_CAUSE_ENA_M); wr32(hw, PFINT_FW_CTL, val); /* enable Mailbox queue Interrupt causes */ val = ((reg_idx & PFINT_MBX_CTL_MSIX_INDX_M) | PFINT_MBX_CTL_CAUSE_ENA_M); wr32(hw, PFINT_MBX_CTL, val); ice_flush(hw); } /** * ice_req_irq_msix_misc - Setup the misc vector to handle non queue events * @pf: board private structure * * This sets up the handler for MSIX 0, which is used to manage the * non-queue interrupts, e.g. AdminQ and errors. This is not used * when in MSI or Legacy interrupt mode. */ static int ice_req_irq_msix_misc(struct ice_pf *pf) { struct ice_hw *hw = &pf->hw; int oicr_idx, err = 0; if (!pf->int_name[0]) snprintf(pf->int_name, sizeof(pf->int_name) - 1, "%s-%s:misc", dev_driver_string(&pf->pdev->dev), dev_name(&pf->pdev->dev)); /* Do not request IRQ but do enable OICR interrupt since settings are * lost during reset. Note that this function is called only during * rebuild path and not while reset is in progress. */ if (ice_is_reset_in_progress(pf->state)) goto skip_req_irq; /* reserve one vector in irq_tracker for misc interrupts */ oicr_idx = ice_get_res(pf, pf->irq_tracker, 1, ICE_RES_MISC_VEC_ID); if (oicr_idx < 0) return oicr_idx; pf->num_avail_sw_msix -= 1; pf->oicr_idx = oicr_idx; err = devm_request_irq(&pf->pdev->dev, pf->msix_entries[pf->oicr_idx].vector, ice_misc_intr, 0, pf->int_name, pf); if (err) { dev_err(&pf->pdev->dev, "devm_request_irq for %s failed: %d\n", pf->int_name, err); ice_free_res(pf->irq_tracker, 1, ICE_RES_MISC_VEC_ID); pf->num_avail_sw_msix += 1; return err; } skip_req_irq: ice_ena_misc_vector(pf); ice_ena_ctrlq_interrupts(hw, pf->oicr_idx); wr32(hw, GLINT_ITR(ICE_RX_ITR, pf->oicr_idx), ITR_REG_ALIGN(ICE_ITR_8K) >> ICE_ITR_GRAN_S); ice_flush(hw); ice_irq_dynamic_ena(hw, NULL, NULL); return 0; } /** * ice_napi_add - register NAPI handler for the VSI * @vsi: VSI for which NAPI handler is to be registered * * This function is only called in the driver's load path. Registering the NAPI * handler is done in ice_vsi_alloc_q_vector() for all other cases (i.e. resume, * reset/rebuild, etc.) */ static void ice_napi_add(struct ice_vsi *vsi) { int v_idx; if (!vsi->netdev) return; ice_for_each_q_vector(vsi, v_idx) netif_napi_add(vsi->netdev, &vsi->q_vectors[v_idx]->napi, ice_napi_poll, NAPI_POLL_WEIGHT); } /** * ice_set_ops - set netdev and ethtools ops for the given netdev * @netdev: netdev instance */ static void ice_set_ops(struct net_device *netdev) { struct ice_pf *pf = ice_netdev_to_pf(netdev); if (ice_is_safe_mode(pf)) { netdev->netdev_ops = &ice_netdev_safe_mode_ops; ice_set_ethtool_safe_mode_ops(netdev); return; } netdev->netdev_ops = &ice_netdev_ops; ice_set_ethtool_ops(netdev); } /** * ice_set_netdev_features - set features for the given netdev * @netdev: netdev instance */ static void ice_set_netdev_features(struct net_device *netdev) { struct ice_pf *pf = ice_netdev_to_pf(netdev); netdev_features_t csumo_features; netdev_features_t vlano_features; netdev_features_t dflt_features; netdev_features_t tso_features; if (ice_is_safe_mode(pf)) { /* safe mode */ netdev->features = NETIF_F_SG | NETIF_F_HIGHDMA; netdev->hw_features = netdev->features; return; } dflt_features = NETIF_F_SG | NETIF_F_HIGHDMA | NETIF_F_RXHASH; csumo_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_SCTP_CRC | NETIF_F_IPV6_CSUM; vlano_features = NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX; tso_features = NETIF_F_TSO; /* set features that user can change */ netdev->hw_features = dflt_features | csumo_features | vlano_features | tso_features; /* enable features */ netdev->features |= netdev->hw_features; /* encap and VLAN devices inherit default, csumo and tso features */ netdev->hw_enc_features |= dflt_features | csumo_features | tso_features; netdev->vlan_features |= dflt_features | csumo_features | tso_features; } /** * ice_cfg_netdev - Allocate, configure and register a netdev * @vsi: the VSI associated with the new netdev * * Returns 0 on success, negative value on failure */ static int ice_cfg_netdev(struct ice_vsi *vsi) { struct ice_pf *pf = vsi->back; struct ice_netdev_priv *np; struct net_device *netdev; u8 mac_addr[ETH_ALEN]; int err; netdev = alloc_etherdev_mqs(sizeof(*np), vsi->alloc_txq, vsi->alloc_rxq); if (!netdev) return -ENOMEM; vsi->netdev = netdev; np = netdev_priv(netdev); np->vsi = vsi; ice_set_netdev_features(netdev); ice_set_ops(netdev); if (vsi->type == ICE_VSI_PF) { SET_NETDEV_DEV(netdev, &pf->pdev->dev); ether_addr_copy(mac_addr, vsi->port_info->mac.perm_addr); ether_addr_copy(netdev->dev_addr, mac_addr); ether_addr_copy(netdev->perm_addr, mac_addr); } netdev->priv_flags |= IFF_UNICAST_FLT; /* Setup netdev TC information */ ice_vsi_cfg_netdev_tc(vsi, vsi->tc_cfg.ena_tc); /* setup watchdog timeout value to be 5 second */ netdev->watchdog_timeo = 5 * HZ; netdev->min_mtu = ETH_MIN_MTU; netdev->max_mtu = ICE_MAX_MTU; err = register_netdev(vsi->netdev); if (err) return err; netif_carrier_off(vsi->netdev); /* make sure transmit queues start off as stopped */ netif_tx_stop_all_queues(vsi->netdev); return 0; } /** * ice_fill_rss_lut - Fill the RSS lookup table with default values * @lut: Lookup table * @rss_table_size: Lookup table size * @rss_size: Range of queue number for hashing */ void ice_fill_rss_lut(u8 *lut, u16 rss_table_size, u16 rss_size) { u16 i; for (i = 0; i < rss_table_size; i++) lut[i] = i % rss_size; } /** * ice_pf_vsi_setup - Set up a PF VSI * @pf: board private structure * @pi: pointer to the port_info instance * * Returns pointer to the successfully allocated VSI software struct * on success, otherwise returns NULL on failure. */ static struct ice_vsi * ice_pf_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi) { return ice_vsi_setup(pf, pi, ICE_VSI_PF, ICE_INVAL_VFID); } /** * ice_lb_vsi_setup - Set up a loopback VSI * @pf: board private structure * @pi: pointer to the port_info instance * * Returns pointer to the successfully allocated VSI software struct * on success, otherwise returns NULL on failure. */ struct ice_vsi * ice_lb_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi) { return ice_vsi_setup(pf, pi, ICE_VSI_LB, ICE_INVAL_VFID); } /** * ice_vlan_rx_add_vid - Add a VLAN ID filter to HW offload * @netdev: network interface to be adjusted * @proto: unused protocol * @vid: VLAN ID to be added * * net_device_ops implementation for adding VLAN IDs */ static int ice_vlan_rx_add_vid(struct net_device *netdev, __always_unused __be16 proto, u16 vid) { struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; int ret; if (vid >= VLAN_N_VID) { netdev_err(netdev, "VLAN id requested %d is out of range %d\n", vid, VLAN_N_VID); return -EINVAL; } if (vsi->info.pvid) return -EINVAL; /* Enable VLAN pruning when VLAN 0 is added */ if (unlikely(!vid)) { ret = ice_cfg_vlan_pruning(vsi, true, false); if (ret) return ret; } /* Add all VLAN IDs including 0 to the switch filter. VLAN ID 0 is * needed to continue allowing all untagged packets since VLAN prune * list is applied to all packets by the switch */ ret = ice_vsi_add_vlan(vsi, vid); if (!ret) { vsi->vlan_ena = true; set_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags); } return ret; } /** * ice_vlan_rx_kill_vid - Remove a VLAN ID filter from HW offload * @netdev: network interface to be adjusted * @proto: unused protocol * @vid: VLAN ID to be removed * * net_device_ops implementation for removing VLAN IDs */ static int ice_vlan_rx_kill_vid(struct net_device *netdev, __always_unused __be16 proto, u16 vid) { struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; int ret; if (vsi->info.pvid) return -EINVAL; /* Make sure ice_vsi_kill_vlan is successful before updating VLAN * information */ ret = ice_vsi_kill_vlan(vsi, vid); if (ret) return ret; /* Disable VLAN pruning when VLAN 0 is removed */ if (unlikely(!vid)) ret = ice_cfg_vlan_pruning(vsi, false, false); vsi->vlan_ena = false; set_bit(ICE_VSI_FLAG_VLAN_FLTR_CHANGED, vsi->flags); return ret; } /** * ice_setup_pf_sw - Setup the HW switch on startup or after reset * @pf: board private structure * * Returns 0 on success, negative value on failure */ static int ice_setup_pf_sw(struct ice_pf *pf) { struct ice_vsi *vsi; int status = 0; if (ice_is_reset_in_progress(pf->state)) return -EBUSY; vsi = ice_pf_vsi_setup(pf, pf->hw.port_info); if (!vsi) { status = -ENOMEM; goto unroll_vsi_setup; } status = ice_cfg_netdev(vsi); if (status) { status = -ENODEV; goto unroll_vsi_setup; } /* registering the NAPI handler requires both the queues and * netdev to be created, which are done in ice_pf_vsi_setup() * and ice_cfg_netdev() respectively */ ice_napi_add(vsi); status = ice_init_mac_fltr(pf); if (status) goto unroll_napi_add; return status; unroll_napi_add: if (vsi) { ice_napi_del(vsi); if (vsi->netdev) { if (vsi->netdev->reg_state == NETREG_REGISTERED) unregister_netdev(vsi->netdev); free_netdev(vsi->netdev); vsi->netdev = NULL; } } unroll_vsi_setup: if (vsi) { ice_vsi_free_q_vectors(vsi); ice_vsi_delete(vsi); ice_vsi_put_qs(vsi); ice_vsi_clear(vsi); } return status; } /** * ice_get_avail_q_count - Get count of queues in use * @pf_qmap: bitmap to get queue use count from * @lock: pointer to a mutex that protects access to pf_qmap * @size: size of the bitmap */ static u16 ice_get_avail_q_count(unsigned long *pf_qmap, struct mutex *lock, u16 size) { u16 count = 0, bit; mutex_lock(lock); for_each_clear_bit(bit, pf_qmap, size) count++; mutex_unlock(lock); return count; } /** * ice_get_avail_txq_count - Get count of Tx queues in use * @pf: pointer to an ice_pf instance */ u16 ice_get_avail_txq_count(struct ice_pf *pf) { return ice_get_avail_q_count(pf->avail_txqs, &pf->avail_q_mutex, pf->max_pf_txqs); } /** * ice_get_avail_rxq_count - Get count of Rx queues in use * @pf: pointer to an ice_pf instance */ u16 ice_get_avail_rxq_count(struct ice_pf *pf) { return ice_get_avail_q_count(pf->avail_rxqs, &pf->avail_q_mutex, pf->max_pf_rxqs); } /** * ice_deinit_pf - Unrolls initialziations done by ice_init_pf * @pf: board private structure to initialize */ static void ice_deinit_pf(struct ice_pf *pf) { ice_service_task_stop(pf); mutex_destroy(&pf->sw_mutex); mutex_destroy(&pf->avail_q_mutex); if (pf->avail_txqs) { bitmap_free(pf->avail_txqs); pf->avail_txqs = NULL; } if (pf->avail_rxqs) { bitmap_free(pf->avail_rxqs); pf->avail_rxqs = NULL; } } /** * ice_set_pf_caps - set PFs capability flags * @pf: pointer to the PF instance */ static void ice_set_pf_caps(struct ice_pf *pf) { struct ice_hw_func_caps *func_caps = &pf->hw.func_caps; clear_bit(ICE_FLAG_DCB_CAPABLE, pf->flags); if (func_caps->common_cap.dcb) set_bit(ICE_FLAG_DCB_CAPABLE, pf->flags); #ifdef CONFIG_PCI_IOV clear_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags); if (func_caps->common_cap.sr_iov_1_1) { set_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags); pf->num_vfs_supported = min_t(int, func_caps->num_allocd_vfs, ICE_MAX_VF_COUNT); } #endif /* CONFIG_PCI_IOV */ clear_bit(ICE_FLAG_RSS_ENA, pf->flags); if (func_caps->common_cap.rss_table_size) set_bit(ICE_FLAG_RSS_ENA, pf->flags); pf->max_pf_txqs = func_caps->common_cap.num_txq; pf->max_pf_rxqs = func_caps->common_cap.num_rxq; } /** * ice_init_pf - Initialize general software structures (struct ice_pf) * @pf: board private structure to initialize */ static int ice_init_pf(struct ice_pf *pf) { ice_set_pf_caps(pf); mutex_init(&pf->sw_mutex); /* setup service timer and periodic service task */ timer_setup(&pf->serv_tmr, ice_service_timer, 0); pf->serv_tmr_period = HZ; INIT_WORK(&pf->serv_task, ice_service_task); clear_bit(__ICE_SERVICE_SCHED, pf->state); mutex_init(&pf->avail_q_mutex); pf->avail_txqs = bitmap_zalloc(pf->max_pf_txqs, GFP_KERNEL); if (!pf->avail_txqs) return -ENOMEM; pf->avail_rxqs = bitmap_zalloc(pf->max_pf_rxqs, GFP_KERNEL); if (!pf->avail_rxqs) { devm_kfree(&pf->pdev->dev, pf->avail_txqs); pf->avail_txqs = NULL; return -ENOMEM; } return 0; } /** * ice_ena_msix_range - Request a range of MSIX vectors from the OS * @pf: board private structure * * compute the number of MSIX vectors required (v_budget) and request from * the OS. Return the number of vectors reserved or negative on failure */ static int ice_ena_msix_range(struct ice_pf *pf) { int v_left, v_actual, v_budget = 0; int needed, err, i; v_left = pf->hw.func_caps.common_cap.num_msix_vectors; /* reserve one vector for miscellaneous handler */ needed = 1; if (v_left < needed) goto no_hw_vecs_left_err; v_budget += needed; v_left -= needed; /* reserve vectors for LAN traffic */ needed = min_t(int, num_online_cpus(), v_left); if (v_left < needed) goto no_hw_vecs_left_err; pf->num_lan_msix = needed; v_budget += needed; v_left -= needed; pf->msix_entries = devm_kcalloc(&pf->pdev->dev, v_budget, sizeof(*pf->msix_entries), GFP_KERNEL); if (!pf->msix_entries) { err = -ENOMEM; goto exit_err; } for (i = 0; i < v_budget; i++) pf->msix_entries[i].entry = i; /* actually reserve the vectors */ v_actual = pci_enable_msix_range(pf->pdev, pf->msix_entries, ICE_MIN_MSIX, v_budget); if (v_actual < 0) { dev_err(&pf->pdev->dev, "unable to reserve MSI-X vectors\n"); err = v_actual; goto msix_err; } if (v_actual < v_budget) { dev_warn(&pf->pdev->dev, "not enough OS MSI-X vectors. requested = %d, obtained = %d\n", v_budget, v_actual); /* 2 vectors for LAN (traffic + OICR) */ #define ICE_MIN_LAN_VECS 2 if (v_actual < ICE_MIN_LAN_VECS) { /* error if we can't get minimum vectors */ pci_disable_msix(pf->pdev); err = -ERANGE; goto msix_err; } else { pf->num_lan_msix = ICE_MIN_LAN_VECS; } } return v_actual; msix_err: devm_kfree(&pf->pdev->dev, pf->msix_entries); goto exit_err; no_hw_vecs_left_err: dev_err(&pf->pdev->dev, "not enough device MSI-X vectors. requested = %d, available = %d\n", needed, v_left); err = -ERANGE; exit_err: pf->num_lan_msix = 0; return err; } /** * ice_dis_msix - Disable MSI-X interrupt setup in OS * @pf: board private structure */ static void ice_dis_msix(struct ice_pf *pf) { pci_disable_msix(pf->pdev); devm_kfree(&pf->pdev->dev, pf->msix_entries); pf->msix_entries = NULL; } /** * ice_clear_interrupt_scheme - Undo things done by ice_init_interrupt_scheme * @pf: board private structure */ static void ice_clear_interrupt_scheme(struct ice_pf *pf) { ice_dis_msix(pf); if (pf->irq_tracker) { devm_kfree(&pf->pdev->dev, pf->irq_tracker); pf->irq_tracker = NULL; } } /** * ice_init_interrupt_scheme - Determine proper interrupt scheme * @pf: board private structure to initialize */ static int ice_init_interrupt_scheme(struct ice_pf *pf) { int vectors; vectors = ice_ena_msix_range(pf); if (vectors < 0) return vectors; /* set up vector assignment tracking */ pf->irq_tracker = devm_kzalloc(&pf->pdev->dev, sizeof(*pf->irq_tracker) + (sizeof(u16) * vectors), GFP_KERNEL); if (!pf->irq_tracker) { ice_dis_msix(pf); return -ENOMEM; } /* populate SW interrupts pool with number of OS granted IRQs. */ pf->num_avail_sw_msix = vectors; pf->irq_tracker->num_entries = vectors; pf->irq_tracker->end = pf->irq_tracker->num_entries; return 0; } /** * ice_log_pkg_init - log result of DDP package load * @hw: pointer to hardware info * @status: status of package load */ static void ice_log_pkg_init(struct ice_hw *hw, enum ice_status *status) { struct ice_pf *pf = (struct ice_pf *)hw->back; struct device *dev = &pf->pdev->dev; switch (*status) { case ICE_SUCCESS: /* The package download AdminQ command returned success because * this download succeeded or ICE_ERR_AQ_NO_WORK since there is * already a package loaded on the device. */ if (hw->pkg_ver.major == hw->active_pkg_ver.major && hw->pkg_ver.minor == hw->active_pkg_ver.minor && hw->pkg_ver.update == hw->active_pkg_ver.update && hw->pkg_ver.draft == hw->active_pkg_ver.draft && !memcmp(hw->pkg_name, hw->active_pkg_name, sizeof(hw->pkg_name))) { if (hw->pkg_dwnld_status == ICE_AQ_RC_EEXIST) dev_info(dev, "DDP package already present on device: %s version %d.%d.%d.%d\n", hw->active_pkg_name, hw->active_pkg_ver.major, hw->active_pkg_ver.minor, hw->active_pkg_ver.update, hw->active_pkg_ver.draft); else dev_info(dev, "The DDP package was successfully loaded: %s version %d.%d.%d.%d\n", hw->active_pkg_name, hw->active_pkg_ver.major, hw->active_pkg_ver.minor, hw->active_pkg_ver.update, hw->active_pkg_ver.draft); } else if (hw->active_pkg_ver.major != ICE_PKG_SUPP_VER_MAJ || hw->active_pkg_ver.minor != ICE_PKG_SUPP_VER_MNR) { dev_err(dev, "The device has a DDP package that is not supported by the driver. The device has package '%s' version %d.%d.x.x. The driver requires version %d.%d.x.x. Entering Safe Mode.\n", hw->active_pkg_name, hw->active_pkg_ver.major, hw->active_pkg_ver.minor, ICE_PKG_SUPP_VER_MAJ, ICE_PKG_SUPP_VER_MNR); *status = ICE_ERR_NOT_SUPPORTED; } else if (hw->active_pkg_ver.major == ICE_PKG_SUPP_VER_MAJ && hw->active_pkg_ver.minor == ICE_PKG_SUPP_VER_MNR) { dev_info(dev, "The driver could not load the DDP package file because a compatible DDP package is already present on the device. The device has package '%s' version %d.%d.%d.%d. The package file found by the driver: '%s' version %d.%d.%d.%d.\n", hw->active_pkg_name, hw->active_pkg_ver.major, hw->active_pkg_ver.minor, hw->active_pkg_ver.update, hw->active_pkg_ver.draft, hw->pkg_name, hw->pkg_ver.major, hw->pkg_ver.minor, hw->pkg_ver.update, hw->pkg_ver.draft); } else { dev_err(dev, "An unknown error occurred when loading the DDP package, please reboot the system. If the problem persists, update the NVM. Entering Safe Mode.\n"); *status = ICE_ERR_NOT_SUPPORTED; } break; case ICE_ERR_BUF_TOO_SHORT: /* fall-through */ case ICE_ERR_CFG: dev_err(dev, "The DDP package file is invalid. Entering Safe Mode.\n"); break; case ICE_ERR_NOT_SUPPORTED: /* Package File version not supported */ if (hw->pkg_ver.major > ICE_PKG_SUPP_VER_MAJ || (hw->pkg_ver.major == ICE_PKG_SUPP_VER_MAJ && hw->pkg_ver.minor > ICE_PKG_SUPP_VER_MNR)) dev_err(dev, "The DDP package file version is higher than the driver supports. Please use an updated driver. Entering Safe Mode.\n"); else if (hw->pkg_ver.major < ICE_PKG_SUPP_VER_MAJ || (hw->pkg_ver.major == ICE_PKG_SUPP_VER_MAJ && hw->pkg_ver.minor < ICE_PKG_SUPP_VER_MNR)) dev_err(dev, "The DDP package file version is lower than the driver supports. The driver requires version %d.%d.x.x. Please use an updated DDP Package file. Entering Safe Mode.\n", ICE_PKG_SUPP_VER_MAJ, ICE_PKG_SUPP_VER_MNR); break; case ICE_ERR_AQ_ERROR: switch (hw->adminq.sq_last_status) { case ICE_AQ_RC_ENOSEC: case ICE_AQ_RC_EBADSIG: dev_err(dev, "The DDP package could not be loaded because its signature is not valid. Please use a valid DDP Package. Entering Safe Mode.\n"); return; case ICE_AQ_RC_ESVN: dev_err(dev, "The DDP Package could not be loaded because its security revision is too low. Please use an updated DDP Package. Entering Safe Mode.\n"); return; case ICE_AQ_RC_EBADMAN: case ICE_AQ_RC_EBADBUF: dev_err(dev, "An error occurred on the device while loading the DDP package. The device will be reset.\n"); return; default: break; } /* fall-through */ default: dev_err(dev, "An unknown error (%d) occurred when loading the DDP package. Entering Safe Mode.\n", *status); break; } } /** * ice_load_pkg - load/reload the DDP Package file * @firmware: firmware structure when firmware requested or NULL for reload * @pf: pointer to the PF instance * * Called on probe and post CORER/GLOBR rebuild to load DDP Package and * initialize HW tables. */ static void ice_load_pkg(const struct firmware *firmware, struct ice_pf *pf) { enum ice_status status = ICE_ERR_PARAM; struct device *dev = &pf->pdev->dev; struct ice_hw *hw = &pf->hw; /* Load DDP Package */ if (firmware && !hw->pkg_copy) { status = ice_copy_and_init_pkg(hw, firmware->data, firmware->size); ice_log_pkg_init(hw, &status); } else if (!firmware && hw->pkg_copy) { /* Reload package during rebuild after CORER/GLOBR reset */ status = ice_init_pkg(hw, hw->pkg_copy, hw->pkg_size); ice_log_pkg_init(hw, &status); } else { dev_err(dev, "The DDP package file failed to load. Entering Safe Mode.\n"); } if (status) { /* Safe Mode */ clear_bit(ICE_FLAG_ADV_FEATURES, pf->flags); return; } /* Successful download package is the precondition for advanced * features, hence setting the ICE_FLAG_ADV_FEATURES flag */ set_bit(ICE_FLAG_ADV_FEATURES, pf->flags); } /** * ice_verify_cacheline_size - verify driver's assumption of 64 Byte cache lines * @pf: pointer to the PF structure * * There is no error returned here because the driver should be able to handle * 128 Byte cache lines, so we only print a warning in case issues are seen, * specifically with Tx. */ static void ice_verify_cacheline_size(struct ice_pf *pf) { if (rd32(&pf->hw, GLPCI_CNF2) & GLPCI_CNF2_CACHELINE_SIZE_M) dev_warn(&pf->pdev->dev, "%d Byte cache line assumption is invalid, driver may have Tx timeouts!\n", ICE_CACHE_LINE_BYTES); } /** * ice_send_version - update firmware with driver version * @pf: PF struct * * Returns ICE_SUCCESS on success, else error code */ static enum ice_status ice_send_version(struct ice_pf *pf) { struct ice_driver_ver dv; dv.major_ver = DRV_VERSION_MAJOR; dv.minor_ver = DRV_VERSION_MINOR; dv.build_ver = DRV_VERSION_BUILD; dv.subbuild_ver = 0; strscpy((char *)dv.driver_string, DRV_VERSION, sizeof(dv.driver_string)); return ice_aq_send_driver_ver(&pf->hw, &dv, NULL); } /** * ice_get_opt_fw_name - return optional firmware file name or NULL * @pf: pointer to the PF instance */ static char *ice_get_opt_fw_name(struct ice_pf *pf) { /* Optional firmware name same as default with additional dash * followed by a EUI-64 identifier (PCIe Device Serial Number) */ struct pci_dev *pdev = pf->pdev; char *opt_fw_filename = NULL; u32 dword; u8 dsn[8]; int pos; /* Determine the name of the optional file using the DSN (two * dwords following the start of the DSN Capability). */ pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_DSN); if (pos) { opt_fw_filename = kzalloc(NAME_MAX, GFP_KERNEL); if (!opt_fw_filename) return NULL; pci_read_config_dword(pdev, pos + 4, &dword); put_unaligned_le32(dword, &dsn[0]); pci_read_config_dword(pdev, pos + 8, &dword); put_unaligned_le32(dword, &dsn[4]); snprintf(opt_fw_filename, NAME_MAX, "%sice-%02x%02x%02x%02x%02x%02x%02x%02x.pkg", ICE_DDP_PKG_PATH, dsn[7], dsn[6], dsn[5], dsn[4], dsn[3], dsn[2], dsn[1], dsn[0]); } return opt_fw_filename; } /** * ice_request_fw - Device initialization routine * @pf: pointer to the PF instance */ static void ice_request_fw(struct ice_pf *pf) { char *opt_fw_filename = ice_get_opt_fw_name(pf); const struct firmware *firmware = NULL; struct device *dev = &pf->pdev->dev; int err = 0; /* optional device-specific DDP (if present) overrides the default DDP * package file. kernel logs a debug message if the file doesn't exist, * and warning messages for other errors. */ if (opt_fw_filename) { err = firmware_request_nowarn(&firmware, opt_fw_filename, dev); if (err) { kfree(opt_fw_filename); goto dflt_pkg_load; } /* request for firmware was successful. Download to device */ ice_load_pkg(firmware, pf); kfree(opt_fw_filename); release_firmware(firmware); return; } dflt_pkg_load: err = request_firmware(&firmware, ICE_DDP_PKG_FILE, dev); if (err) { dev_err(dev, "The DDP package file was not found or could not be read. Entering Safe Mode\n"); return; } /* request for firmware was successful. Download to device */ ice_load_pkg(firmware, pf); release_firmware(firmware); } /** * ice_probe - Device initialization routine * @pdev: PCI device information struct * @ent: entry in ice_pci_tbl * * Returns 0 on success, negative on failure */ static int ice_probe(struct pci_dev *pdev, const struct pci_device_id __always_unused *ent) { struct device *dev = &pdev->dev; struct ice_pf *pf; struct ice_hw *hw; int err; /* this driver uses devres, see Documentation/driver-api/driver-model/devres.rst */ err = pcim_enable_device(pdev); if (err) return err; err = pcim_iomap_regions(pdev, BIT(ICE_BAR0), pci_name(pdev)); if (err) { dev_err(dev, "BAR0 I/O map error %d\n", err); return err; } pf = devm_kzalloc(dev, sizeof(*pf), GFP_KERNEL); if (!pf) return -ENOMEM; /* set up for high or low DMA */ err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); if (err) err = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32)); if (err) { dev_err(dev, "DMA configuration failed: 0x%x\n", err); return err; } pci_enable_pcie_error_reporting(pdev); pci_set_master(pdev); pf->pdev = pdev; pci_set_drvdata(pdev, pf); set_bit(__ICE_DOWN, pf->state); /* Disable service task until DOWN bit is cleared */ set_bit(__ICE_SERVICE_DIS, pf->state); hw = &pf->hw; hw->hw_addr = pcim_iomap_table(pdev)[ICE_BAR0]; hw->back = pf; hw->vendor_id = pdev->vendor; hw->device_id = pdev->device; pci_read_config_byte(pdev, PCI_REVISION_ID, &hw->revision_id); hw->subsystem_vendor_id = pdev->subsystem_vendor; hw->subsystem_device_id = pdev->subsystem_device; hw->bus.device = PCI_SLOT(pdev->devfn); hw->bus.func = PCI_FUNC(pdev->devfn); ice_set_ctrlq_len(hw); pf->msg_enable = netif_msg_init(debug, ICE_DFLT_NETIF_M); #ifndef CONFIG_DYNAMIC_DEBUG if (debug < -1) hw->debug_mask = debug; #endif err = ice_init_hw(hw); if (err) { dev_err(dev, "ice_init_hw failed: %d\n", err); err = -EIO; goto err_exit_unroll; } dev_info(dev, "firmware %d.%d.%d api %d.%d.%d nvm %s build 0x%08x\n", hw->fw_maj_ver, hw->fw_min_ver, hw->fw_patch, hw->api_maj_ver, hw->api_min_ver, hw->api_patch, ice_nvm_version_str(hw), hw->fw_build); ice_request_fw(pf); /* if ice_request_fw fails, ICE_FLAG_ADV_FEATURES bit won't be * set in pf->state, which will cause ice_is_safe_mode to return * true */ if (ice_is_safe_mode(pf)) { dev_err(dev, "Package download failed. Advanced features disabled - Device now in Safe Mode\n"); /* we already got function/device capabilities but these don't * reflect what the driver needs to do in safe mode. Instead of * adding conditional logic everywhere to ignore these * device/function capabilities, override them. */ ice_set_safe_mode_caps(hw); } err = ice_init_pf(pf); if (err) { dev_err(dev, "ice_init_pf failed: %d\n", err); goto err_init_pf_unroll; } pf->num_alloc_vsi = hw->func_caps.guar_num_vsi; if (!pf->num_alloc_vsi) { err = -EIO; goto err_init_pf_unroll; } pf->vsi = devm_kcalloc(dev, pf->num_alloc_vsi, sizeof(*pf->vsi), GFP_KERNEL); if (!pf->vsi) { err = -ENOMEM; goto err_init_pf_unroll; } err = ice_init_interrupt_scheme(pf); if (err) { dev_err(dev, "ice_init_interrupt_scheme failed: %d\n", err); err = -EIO; goto err_init_interrupt_unroll; } /* Driver is mostly up */ clear_bit(__ICE_DOWN, pf->state); /* In case of MSIX we are going to setup the misc vector right here * to handle admin queue events etc. In case of legacy and MSI * the misc functionality and queue processing is combined in * the same vector and that gets setup at open. */ err = ice_req_irq_msix_misc(pf); if (err) { dev_err(dev, "setup of misc vector failed: %d\n", err); goto err_init_interrupt_unroll; } /* create switch struct for the switch element created by FW on boot */ pf->first_sw = devm_kzalloc(dev, sizeof(*pf->first_sw), GFP_KERNEL); if (!pf->first_sw) { err = -ENOMEM; goto err_msix_misc_unroll; } if (hw->evb_veb) pf->first_sw->bridge_mode = BRIDGE_MODE_VEB; else pf->first_sw->bridge_mode = BRIDGE_MODE_VEPA; pf->first_sw->pf = pf; /* record the sw_id available for later use */ pf->first_sw->sw_id = hw->port_info->sw_id; err = ice_setup_pf_sw(pf); if (err) { dev_err(dev, "probe failed due to setup PF switch:%d\n", err); goto err_alloc_sw_unroll; } clear_bit(__ICE_SERVICE_DIS, pf->state); /* tell the firmware we are up */ err = ice_send_version(pf); if (err) { dev_err(dev, "probe failed sending driver version %s. error: %d\n", ice_drv_ver, err); goto err_alloc_sw_unroll; } /* since everything is good, start the service timer */ mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period)); err = ice_init_link_events(pf->hw.port_info); if (err) { dev_err(dev, "ice_init_link_events failed: %d\n", err); goto err_alloc_sw_unroll; } ice_verify_cacheline_size(pf); /* If no DDP driven features have to be setup, return here */ if (ice_is_safe_mode(pf)) return 0; /* initialize DDP driven features */ /* Note: DCB init failure is non-fatal to load */ if (ice_init_pf_dcb(pf, false)) { clear_bit(ICE_FLAG_DCB_CAPABLE, pf->flags); clear_bit(ICE_FLAG_DCB_ENA, pf->flags); } else { ice_cfg_lldp_mib_change(&pf->hw, true); } return 0; err_alloc_sw_unroll: set_bit(__ICE_SERVICE_DIS, pf->state); set_bit(__ICE_DOWN, pf->state); devm_kfree(&pf->pdev->dev, pf->first_sw); err_msix_misc_unroll: ice_free_irq_msix_misc(pf); err_init_interrupt_unroll: ice_clear_interrupt_scheme(pf); devm_kfree(dev, pf->vsi); err_init_pf_unroll: ice_deinit_pf(pf); ice_deinit_hw(hw); err_exit_unroll: pci_disable_pcie_error_reporting(pdev); return err; } /** * ice_remove - Device removal routine * @pdev: PCI device information struct */ static void ice_remove(struct pci_dev *pdev) { struct ice_pf *pf = pci_get_drvdata(pdev); int i; if (!pf) return; for (i = 0; i < ICE_MAX_RESET_WAIT; i++) { if (!ice_is_reset_in_progress(pf->state)) break; msleep(100); } set_bit(__ICE_DOWN, pf->state); ice_service_task_stop(pf); if (test_bit(ICE_FLAG_SRIOV_ENA, pf->flags)) ice_free_vfs(pf); ice_vsi_release_all(pf); ice_free_irq_msix_misc(pf); ice_for_each_vsi(pf, i) { if (!pf->vsi[i]) continue; ice_vsi_free_q_vectors(pf->vsi[i]); } ice_deinit_pf(pf); ice_deinit_hw(&pf->hw); ice_clear_interrupt_scheme(pf); /* Issue a PFR as part of the prescribed driver unload flow. Do not * do it via ice_schedule_reset() since there is no need to rebuild * and the service task is already stopped. */ ice_reset(&pf->hw, ICE_RESET_PFR); pci_disable_pcie_error_reporting(pdev); } /** * ice_pci_err_detected - warning that PCI error has been detected * @pdev: PCI device information struct * @err: the type of PCI error * * Called to warn that something happened on the PCI bus and the error handling * is in progress. Allows the driver to gracefully prepare/handle PCI errors. */ static pci_ers_result_t ice_pci_err_detected(struct pci_dev *pdev, enum pci_channel_state err) { struct ice_pf *pf = pci_get_drvdata(pdev); if (!pf) { dev_err(&pdev->dev, "%s: unrecoverable device error %d\n", __func__, err); return PCI_ERS_RESULT_DISCONNECT; } if (!test_bit(__ICE_SUSPENDED, pf->state)) { ice_service_task_stop(pf); if (!test_bit(__ICE_PREPARED_FOR_RESET, pf->state)) { set_bit(__ICE_PFR_REQ, pf->state); ice_prepare_for_reset(pf); } } return PCI_ERS_RESULT_NEED_RESET; } /** * ice_pci_err_slot_reset - a PCI slot reset has just happened * @pdev: PCI device information struct * * Called to determine if the driver can recover from the PCI slot reset by * using a register read to determine if the device is recoverable. */ static pci_ers_result_t ice_pci_err_slot_reset(struct pci_dev *pdev) { struct ice_pf *pf = pci_get_drvdata(pdev); pci_ers_result_t result; int err; u32 reg; err = pci_enable_device_mem(pdev); if (err) { dev_err(&pdev->dev, "Cannot re-enable PCI device after reset, error %d\n", err); result = PCI_ERS_RESULT_DISCONNECT; } else { pci_set_master(pdev); pci_restore_state(pdev); pci_save_state(pdev); pci_wake_from_d3(pdev, false); /* Check for life */ reg = rd32(&pf->hw, GLGEN_RTRIG); if (!reg) result = PCI_ERS_RESULT_RECOVERED; else result = PCI_ERS_RESULT_DISCONNECT; } err = pci_cleanup_aer_uncorrect_error_status(pdev); if (err) dev_dbg(&pdev->dev, "pci_cleanup_aer_uncorrect_error_status failed, error %d\n", err); /* non-fatal, continue */ return result; } /** * ice_pci_err_resume - restart operations after PCI error recovery * @pdev: PCI device information struct * * Called to allow the driver to bring things back up after PCI error and/or * reset recovery have finished */ static void ice_pci_err_resume(struct pci_dev *pdev) { struct ice_pf *pf = pci_get_drvdata(pdev); if (!pf) { dev_err(&pdev->dev, "%s failed, device is unrecoverable\n", __func__); return; } if (test_bit(__ICE_SUSPENDED, pf->state)) { dev_dbg(&pdev->dev, "%s failed to resume normal operations!\n", __func__); return; } ice_do_reset(pf, ICE_RESET_PFR); ice_service_task_restart(pf); mod_timer(&pf->serv_tmr, round_jiffies(jiffies + pf->serv_tmr_period)); } /** * ice_pci_err_reset_prepare - prepare device driver for PCI reset * @pdev: PCI device information struct */ static void ice_pci_err_reset_prepare(struct pci_dev *pdev) { struct ice_pf *pf = pci_get_drvdata(pdev); if (!test_bit(__ICE_SUSPENDED, pf->state)) { ice_service_task_stop(pf); if (!test_bit(__ICE_PREPARED_FOR_RESET, pf->state)) { set_bit(__ICE_PFR_REQ, pf->state); ice_prepare_for_reset(pf); } } } /** * ice_pci_err_reset_done - PCI reset done, device driver reset can begin * @pdev: PCI device information struct */ static void ice_pci_err_reset_done(struct pci_dev *pdev) { ice_pci_err_resume(pdev); } /* ice_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 ice_pci_tbl[] = { { PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_BACKPLANE), 0 }, { PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_QSFP), 0 }, { PCI_VDEVICE(INTEL, ICE_DEV_ID_E810C_SFP), 0 }, /* required last entry */ { 0, } }; MODULE_DEVICE_TABLE(pci, ice_pci_tbl); static const struct pci_error_handlers ice_pci_err_handler = { .error_detected = ice_pci_err_detected, .slot_reset = ice_pci_err_slot_reset, .reset_prepare = ice_pci_err_reset_prepare, .reset_done = ice_pci_err_reset_done, .resume = ice_pci_err_resume }; static struct pci_driver ice_driver = { .name = KBUILD_MODNAME, .id_table = ice_pci_tbl, .probe = ice_probe, .remove = ice_remove, .sriov_configure = ice_sriov_configure, .err_handler = &ice_pci_err_handler }; /** * ice_module_init - Driver registration routine * * ice_module_init is the first routine called when the driver is * loaded. All it does is register with the PCI subsystem. */ static int __init ice_module_init(void) { int status; pr_info("%s - version %s\n", ice_driver_string, ice_drv_ver); pr_info("%s\n", ice_copyright); ice_wq = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0, KBUILD_MODNAME); if (!ice_wq) { pr_err("Failed to create workqueue\n"); return -ENOMEM; } status = pci_register_driver(&ice_driver); if (status) { pr_err("failed to register PCI driver, err %d\n", status); destroy_workqueue(ice_wq); } return status; } module_init(ice_module_init); /** * ice_module_exit - Driver exit cleanup routine * * ice_module_exit is called just before the driver is removed * from memory. */ static void __exit ice_module_exit(void) { pci_unregister_driver(&ice_driver); destroy_workqueue(ice_wq); pr_info("module unloaded\n"); } module_exit(ice_module_exit); /** * ice_set_mac_address - NDO callback to set MAC address * @netdev: network interface device structure * @pi: pointer to an address structure * * Returns 0 on success, negative on failure */ static int ice_set_mac_address(struct net_device *netdev, void *pi) { struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; struct ice_pf *pf = vsi->back; struct ice_hw *hw = &pf->hw; struct sockaddr *addr = pi; enum ice_status status; u8 flags = 0; int err = 0; u8 *mac; mac = (u8 *)addr->sa_data; if (!is_valid_ether_addr(mac)) return -EADDRNOTAVAIL; if (ether_addr_equal(netdev->dev_addr, mac)) { netdev_warn(netdev, "already using mac %pM\n", mac); return 0; } if (test_bit(__ICE_DOWN, pf->state) || ice_is_reset_in_progress(pf->state)) { netdev_err(netdev, "can't set mac %pM. device not ready\n", mac); return -EBUSY; } /* When we change the MAC address we also have to change the MAC address * based filter rules that were created previously for the old MAC * address. So first, we remove the old filter rule using ice_remove_mac * and then create a new filter rule using ice_add_mac via * ice_vsi_cfg_mac_fltr function call for both add and/or remove * filters. */ status = ice_vsi_cfg_mac_fltr(vsi, netdev->dev_addr, false); if (status) { err = -EADDRNOTAVAIL; goto err_update_filters; } status = ice_vsi_cfg_mac_fltr(vsi, mac, true); if (status) { err = -EADDRNOTAVAIL; goto err_update_filters; } err_update_filters: if (err) { netdev_err(netdev, "can't set MAC %pM. filter update failed\n", mac); return err; } /* change the netdev's MAC address */ memcpy(netdev->dev_addr, mac, netdev->addr_len); netdev_dbg(vsi->netdev, "updated MAC address to %pM\n", netdev->dev_addr); /* write new MAC address to the firmware */ flags = ICE_AQC_MAN_MAC_UPDATE_LAA_WOL; status = ice_aq_manage_mac_write(hw, mac, flags, NULL); if (status) { netdev_err(netdev, "can't set MAC %pM. write to firmware failed error %d\n", mac, status); } return 0; } /** * ice_set_rx_mode - NDO callback to set the netdev filters * @netdev: network interface device structure */ static void ice_set_rx_mode(struct net_device *netdev) { struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; if (!vsi) return; /* Set the flags to synchronize filters * ndo_set_rx_mode may be triggered even without a change in netdev * flags */ set_bit(ICE_VSI_FLAG_UMAC_FLTR_CHANGED, vsi->flags); set_bit(ICE_VSI_FLAG_MMAC_FLTR_CHANGED, vsi->flags); set_bit(ICE_FLAG_FLTR_SYNC, vsi->back->flags); /* schedule our worker thread which will take care of * applying the new filter changes */ ice_service_task_schedule(vsi->back); } /** * ice_fdb_add - add an entry to the hardware database * @ndm: the input from the stack * @tb: pointer to array of nladdr (unused) * @dev: the net device pointer * @addr: the MAC address entry being added * @vid: VLAN ID * @flags: instructions from stack about fdb operation * @extack: netlink extended ack */ static int ice_fdb_add(struct ndmsg *ndm, struct nlattr __always_unused *tb[], struct net_device *dev, const unsigned char *addr, u16 vid, u16 flags, struct netlink_ext_ack __always_unused *extack) { int err; if (vid) { netdev_err(dev, "VLANs aren't supported yet for dev_uc|mc_add()\n"); return -EINVAL; } if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { netdev_err(dev, "FDB only supports static addresses\n"); return -EINVAL; } if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) err = dev_uc_add_excl(dev, addr); else if (is_multicast_ether_addr(addr)) err = dev_mc_add_excl(dev, addr); else err = -EINVAL; /* Only return duplicate errors if NLM_F_EXCL is set */ if (err == -EEXIST && !(flags & NLM_F_EXCL)) err = 0; return err; } /** * ice_fdb_del - delete an entry from the hardware database * @ndm: the input from the stack * @tb: pointer to array of nladdr (unused) * @dev: the net device pointer * @addr: the MAC address entry being added * @vid: VLAN ID */ static int ice_fdb_del(struct ndmsg *ndm, __always_unused struct nlattr *tb[], struct net_device *dev, const unsigned char *addr, __always_unused u16 vid) { int err; if (ndm->ndm_state & NUD_PERMANENT) { netdev_err(dev, "FDB only supports static addresses\n"); return -EINVAL; } if (is_unicast_ether_addr(addr)) err = dev_uc_del(dev, addr); else if (is_multicast_ether_addr(addr)) err = dev_mc_del(dev, addr); else err = -EINVAL; return err; } /** * ice_set_features - set the netdev feature flags * @netdev: ptr to the netdev being adjusted * @features: the feature set that the stack is suggesting */ static int ice_set_features(struct net_device *netdev, netdev_features_t features) { struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; int ret = 0; /* Don't set any netdev advanced features with device in Safe Mode */ if (ice_is_safe_mode(vsi->back)) { dev_err(&vsi->back->pdev->dev, "Device is in Safe Mode - not enabling advanced netdev features\n"); return ret; } /* Multiple features can be changed in one call so keep features in * separate if/else statements to guarantee each feature is checked */ if (features & NETIF_F_RXHASH && !(netdev->features & NETIF_F_RXHASH)) ret = ice_vsi_manage_rss_lut(vsi, true); else if (!(features & NETIF_F_RXHASH) && netdev->features & NETIF_F_RXHASH) ret = ice_vsi_manage_rss_lut(vsi, false); if ((features & NETIF_F_HW_VLAN_CTAG_RX) && !(netdev->features & NETIF_F_HW_VLAN_CTAG_RX)) ret = ice_vsi_manage_vlan_stripping(vsi, true); else if (!(features & NETIF_F_HW_VLAN_CTAG_RX) && (netdev->features & NETIF_F_HW_VLAN_CTAG_RX)) ret = ice_vsi_manage_vlan_stripping(vsi, false); if ((features & NETIF_F_HW_VLAN_CTAG_TX) && !(netdev->features & NETIF_F_HW_VLAN_CTAG_TX)) ret = ice_vsi_manage_vlan_insertion(vsi); else if (!(features & NETIF_F_HW_VLAN_CTAG_TX) && (netdev->features & NETIF_F_HW_VLAN_CTAG_TX)) ret = ice_vsi_manage_vlan_insertion(vsi); if ((features & NETIF_F_HW_VLAN_CTAG_FILTER) && !(netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) ret = ice_cfg_vlan_pruning(vsi, true, false); else if (!(features & NETIF_F_HW_VLAN_CTAG_FILTER) && (netdev->features & NETIF_F_HW_VLAN_CTAG_FILTER)) ret = ice_cfg_vlan_pruning(vsi, false, false); return ret; } /** * ice_vsi_vlan_setup - Setup VLAN offload properties on a VSI * @vsi: VSI to setup VLAN properties for */ static int ice_vsi_vlan_setup(struct ice_vsi *vsi) { int ret = 0; if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_RX) ret = ice_vsi_manage_vlan_stripping(vsi, true); if (vsi->netdev->features & NETIF_F_HW_VLAN_CTAG_TX) ret = ice_vsi_manage_vlan_insertion(vsi); return ret; } /** * ice_vsi_cfg - Setup the VSI * @vsi: the VSI being configured * * Return 0 on success and negative value on error */ int ice_vsi_cfg(struct ice_vsi *vsi) { int err; if (vsi->netdev) { ice_set_rx_mode(vsi->netdev); err = ice_vsi_vlan_setup(vsi); if (err) return err; } ice_vsi_cfg_dcb_rings(vsi); err = ice_vsi_cfg_lan_txqs(vsi); if (!err) err = ice_vsi_cfg_rxqs(vsi); return err; } /** * ice_napi_enable_all - Enable NAPI for all q_vectors in the VSI * @vsi: the VSI being configured */ static void ice_napi_enable_all(struct ice_vsi *vsi) { int q_idx; if (!vsi->netdev) return; ice_for_each_q_vector(vsi, q_idx) { struct ice_q_vector *q_vector = vsi->q_vectors[q_idx]; if (q_vector->rx.ring || q_vector->tx.ring) napi_enable(&q_vector->napi); } } /** * ice_up_complete - Finish the last steps of bringing up a connection * @vsi: The VSI being configured * * Return 0 on success and negative value on error */ static int ice_up_complete(struct ice_vsi *vsi) { struct ice_pf *pf = vsi->back; int err; ice_vsi_cfg_msix(vsi); /* Enable only Rx rings, Tx rings were enabled by the FW when the * Tx queue group list was configured and the context bits were * programmed using ice_vsi_cfg_txqs */ err = ice_vsi_start_rx_rings(vsi); if (err) return err; clear_bit(__ICE_DOWN, vsi->state); ice_napi_enable_all(vsi); ice_vsi_ena_irq(vsi); if (vsi->port_info && (vsi->port_info->phy.link_info.link_info & ICE_AQ_LINK_UP) && vsi->netdev) { ice_print_link_msg(vsi, true); netif_tx_start_all_queues(vsi->netdev); netif_carrier_on(vsi->netdev); } ice_service_task_schedule(pf); return 0; } /** * ice_up - Bring the connection back up after being down * @vsi: VSI being configured */ int ice_up(struct ice_vsi *vsi) { int err; err = ice_vsi_cfg(vsi); if (!err) err = ice_up_complete(vsi); return err; } /** * ice_fetch_u64_stats_per_ring - get packets and bytes stats per ring * @ring: Tx or Rx ring to read stats from * @pkts: packets stats counter * @bytes: bytes stats counter * * This function fetches stats from the ring considering the atomic operations * that needs to be performed to read u64 values in 32 bit machine. */ static void ice_fetch_u64_stats_per_ring(struct ice_ring *ring, u64 *pkts, u64 *bytes) { unsigned int start; *pkts = 0; *bytes = 0; if (!ring) return; do { start = u64_stats_fetch_begin_irq(&ring->syncp); *pkts = ring->stats.pkts; *bytes = ring->stats.bytes; } while (u64_stats_fetch_retry_irq(&ring->syncp, start)); } /** * ice_update_vsi_ring_stats - Update VSI stats counters * @vsi: the VSI to be updated */ static void ice_update_vsi_ring_stats(struct ice_vsi *vsi) { struct rtnl_link_stats64 *vsi_stats = &vsi->net_stats; struct ice_ring *ring; u64 pkts, bytes; int i; /* reset netdev stats */ vsi_stats->tx_packets = 0; vsi_stats->tx_bytes = 0; vsi_stats->rx_packets = 0; vsi_stats->rx_bytes = 0; /* reset non-netdev (extended) stats */ vsi->tx_restart = 0; vsi->tx_busy = 0; vsi->tx_linearize = 0; vsi->rx_buf_failed = 0; vsi->rx_page_failed = 0; rcu_read_lock(); /* update Tx rings counters */ ice_for_each_txq(vsi, i) { ring = READ_ONCE(vsi->tx_rings[i]); ice_fetch_u64_stats_per_ring(ring, &pkts, &bytes); vsi_stats->tx_packets += pkts; vsi_stats->tx_bytes += bytes; vsi->tx_restart += ring->tx_stats.restart_q; vsi->tx_busy += ring->tx_stats.tx_busy; vsi->tx_linearize += ring->tx_stats.tx_linearize; } /* update Rx rings counters */ ice_for_each_rxq(vsi, i) { ring = READ_ONCE(vsi->rx_rings[i]); ice_fetch_u64_stats_per_ring(ring, &pkts, &bytes); vsi_stats->rx_packets += pkts; vsi_stats->rx_bytes += bytes; vsi->rx_buf_failed += ring->rx_stats.alloc_buf_failed; vsi->rx_page_failed += ring->rx_stats.alloc_page_failed; } rcu_read_unlock(); } /** * ice_update_vsi_stats - Update VSI stats counters * @vsi: the VSI to be updated */ void ice_update_vsi_stats(struct ice_vsi *vsi) { struct rtnl_link_stats64 *cur_ns = &vsi->net_stats; struct ice_eth_stats *cur_es = &vsi->eth_stats; struct ice_pf *pf = vsi->back; if (test_bit(__ICE_DOWN, vsi->state) || test_bit(__ICE_CFG_BUSY, pf->state)) return; /* get stats as recorded by Tx/Rx rings */ ice_update_vsi_ring_stats(vsi); /* get VSI stats as recorded by the hardware */ ice_update_eth_stats(vsi); cur_ns->tx_errors = cur_es->tx_errors; cur_ns->rx_dropped = cur_es->rx_discards; cur_ns->tx_dropped = cur_es->tx_discards; cur_ns->multicast = cur_es->rx_multicast; /* update some more netdev stats if this is main VSI */ if (vsi->type == ICE_VSI_PF) { cur_ns->rx_crc_errors = pf->stats.crc_errors; cur_ns->rx_errors = pf->stats.crc_errors + pf->stats.illegal_bytes; cur_ns->rx_length_errors = pf->stats.rx_len_errors; /* record drops from the port level */ cur_ns->rx_missed_errors = pf->stats.eth.rx_discards; } } /** * ice_update_pf_stats - Update PF port stats counters * @pf: PF whose stats needs to be updated */ void ice_update_pf_stats(struct ice_pf *pf) { struct ice_hw_port_stats *prev_ps, *cur_ps; struct ice_hw *hw = &pf->hw; u8 port; port = hw->port_info->lport; prev_ps = &pf->stats_prev; cur_ps = &pf->stats; ice_stat_update40(hw, GLPRT_GORCL(port), pf->stat_prev_loaded, &prev_ps->eth.rx_bytes, &cur_ps->eth.rx_bytes); ice_stat_update40(hw, GLPRT_UPRCL(port), pf->stat_prev_loaded, &prev_ps->eth.rx_unicast, &cur_ps->eth.rx_unicast); ice_stat_update40(hw, GLPRT_MPRCL(port), pf->stat_prev_loaded, &prev_ps->eth.rx_multicast, &cur_ps->eth.rx_multicast); ice_stat_update40(hw, GLPRT_BPRCL(port), pf->stat_prev_loaded, &prev_ps->eth.rx_broadcast, &cur_ps->eth.rx_broadcast); ice_stat_update32(hw, PRTRPB_RDPC, pf->stat_prev_loaded, &prev_ps->eth.rx_discards, &cur_ps->eth.rx_discards); ice_stat_update40(hw, GLPRT_GOTCL(port), pf->stat_prev_loaded, &prev_ps->eth.tx_bytes, &cur_ps->eth.tx_bytes); ice_stat_update40(hw, GLPRT_UPTCL(port), pf->stat_prev_loaded, &prev_ps->eth.tx_unicast, &cur_ps->eth.tx_unicast); ice_stat_update40(hw, GLPRT_MPTCL(port), pf->stat_prev_loaded, &prev_ps->eth.tx_multicast, &cur_ps->eth.tx_multicast); ice_stat_update40(hw, GLPRT_BPTCL(port), pf->stat_prev_loaded, &prev_ps->eth.tx_broadcast, &cur_ps->eth.tx_broadcast); ice_stat_update32(hw, GLPRT_TDOLD(port), pf->stat_prev_loaded, &prev_ps->tx_dropped_link_down, &cur_ps->tx_dropped_link_down); ice_stat_update40(hw, GLPRT_PRC64L(port), pf->stat_prev_loaded, &prev_ps->rx_size_64, &cur_ps->rx_size_64); ice_stat_update40(hw, GLPRT_PRC127L(port), pf->stat_prev_loaded, &prev_ps->rx_size_127, &cur_ps->rx_size_127); ice_stat_update40(hw, GLPRT_PRC255L(port), pf->stat_prev_loaded, &prev_ps->rx_size_255, &cur_ps->rx_size_255); ice_stat_update40(hw, GLPRT_PRC511L(port), pf->stat_prev_loaded, &prev_ps->rx_size_511, &cur_ps->rx_size_511); ice_stat_update40(hw, GLPRT_PRC1023L(port), pf->stat_prev_loaded, &prev_ps->rx_size_1023, &cur_ps->rx_size_1023); ice_stat_update40(hw, GLPRT_PRC1522L(port), pf->stat_prev_loaded, &prev_ps->rx_size_1522, &cur_ps->rx_size_1522); ice_stat_update40(hw, GLPRT_PRC9522L(port), pf->stat_prev_loaded, &prev_ps->rx_size_big, &cur_ps->rx_size_big); ice_stat_update40(hw, GLPRT_PTC64L(port), pf->stat_prev_loaded, &prev_ps->tx_size_64, &cur_ps->tx_size_64); ice_stat_update40(hw, GLPRT_PTC127L(port), pf->stat_prev_loaded, &prev_ps->tx_size_127, &cur_ps->tx_size_127); ice_stat_update40(hw, GLPRT_PTC255L(port), pf->stat_prev_loaded, &prev_ps->tx_size_255, &cur_ps->tx_size_255); ice_stat_update40(hw, GLPRT_PTC511L(port), pf->stat_prev_loaded, &prev_ps->tx_size_511, &cur_ps->tx_size_511); ice_stat_update40(hw, GLPRT_PTC1023L(port), pf->stat_prev_loaded, &prev_ps->tx_size_1023, &cur_ps->tx_size_1023); ice_stat_update40(hw, GLPRT_PTC1522L(port), pf->stat_prev_loaded, &prev_ps->tx_size_1522, &cur_ps->tx_size_1522); ice_stat_update40(hw, GLPRT_PTC9522L(port), pf->stat_prev_loaded, &prev_ps->tx_size_big, &cur_ps->tx_size_big); ice_stat_update32(hw, GLPRT_LXONRXC(port), pf->stat_prev_loaded, &prev_ps->link_xon_rx, &cur_ps->link_xon_rx); ice_stat_update32(hw, GLPRT_LXOFFRXC(port), pf->stat_prev_loaded, &prev_ps->link_xoff_rx, &cur_ps->link_xoff_rx); ice_stat_update32(hw, GLPRT_LXONTXC(port), pf->stat_prev_loaded, &prev_ps->link_xon_tx, &cur_ps->link_xon_tx); ice_stat_update32(hw, GLPRT_LXOFFTXC(port), pf->stat_prev_loaded, &prev_ps->link_xoff_tx, &cur_ps->link_xoff_tx); ice_update_dcb_stats(pf); ice_stat_update32(hw, GLPRT_CRCERRS(port), pf->stat_prev_loaded, &prev_ps->crc_errors, &cur_ps->crc_errors); ice_stat_update32(hw, GLPRT_ILLERRC(port), pf->stat_prev_loaded, &prev_ps->illegal_bytes, &cur_ps->illegal_bytes); ice_stat_update32(hw, GLPRT_MLFC(port), pf->stat_prev_loaded, &prev_ps->mac_local_faults, &cur_ps->mac_local_faults); ice_stat_update32(hw, GLPRT_MRFC(port), pf->stat_prev_loaded, &prev_ps->mac_remote_faults, &cur_ps->mac_remote_faults); ice_stat_update32(hw, GLPRT_RLEC(port), pf->stat_prev_loaded, &prev_ps->rx_len_errors, &cur_ps->rx_len_errors); ice_stat_update32(hw, GLPRT_RUC(port), pf->stat_prev_loaded, &prev_ps->rx_undersize, &cur_ps->rx_undersize); ice_stat_update32(hw, GLPRT_RFC(port), pf->stat_prev_loaded, &prev_ps->rx_fragments, &cur_ps->rx_fragments); ice_stat_update32(hw, GLPRT_ROC(port), pf->stat_prev_loaded, &prev_ps->rx_oversize, &cur_ps->rx_oversize); ice_stat_update32(hw, GLPRT_RJC(port), pf->stat_prev_loaded, &prev_ps->rx_jabber, &cur_ps->rx_jabber); pf->stat_prev_loaded = true; } /** * ice_get_stats64 - get statistics for network device structure * @netdev: network interface device structure * @stats: main device statistics structure */ static void ice_get_stats64(struct net_device *netdev, struct rtnl_link_stats64 *stats) { struct ice_netdev_priv *np = netdev_priv(netdev); struct rtnl_link_stats64 *vsi_stats; struct ice_vsi *vsi = np->vsi; vsi_stats = &vsi->net_stats; if (!vsi->num_txq || !vsi->num_rxq) return; /* netdev packet/byte stats come from ring counter. These are obtained * by summing up ring counters (done by ice_update_vsi_ring_stats). * But, only call the update routine and read the registers if VSI is * not down. */ if (!test_bit(__ICE_DOWN, vsi->state)) ice_update_vsi_ring_stats(vsi); stats->tx_packets = vsi_stats->tx_packets; stats->tx_bytes = vsi_stats->tx_bytes; stats->rx_packets = vsi_stats->rx_packets; stats->rx_bytes = vsi_stats->rx_bytes; /* The rest of the stats can be read from the hardware but instead we * just return values that the watchdog task has already obtained from * the hardware. */ stats->multicast = vsi_stats->multicast; stats->tx_errors = vsi_stats->tx_errors; stats->tx_dropped = vsi_stats->tx_dropped; stats->rx_errors = vsi_stats->rx_errors; stats->rx_dropped = vsi_stats->rx_dropped; stats->rx_crc_errors = vsi_stats->rx_crc_errors; stats->rx_length_errors = vsi_stats->rx_length_errors; } /** * ice_napi_disable_all - Disable NAPI for all q_vectors in the VSI * @vsi: VSI having NAPI disabled */ static void ice_napi_disable_all(struct ice_vsi *vsi) { int q_idx; if (!vsi->netdev) return; ice_for_each_q_vector(vsi, q_idx) { struct ice_q_vector *q_vector = vsi->q_vectors[q_idx]; if (q_vector->rx.ring || q_vector->tx.ring) napi_disable(&q_vector->napi); } } /** * ice_down - Shutdown the connection * @vsi: The VSI being stopped */ int ice_down(struct ice_vsi *vsi) { int i, tx_err, rx_err, link_err = 0; /* Caller of this function is expected to set the * vsi->state __ICE_DOWN bit */ if (vsi->netdev) { netif_carrier_off(vsi->netdev); netif_tx_disable(vsi->netdev); } ice_vsi_dis_irq(vsi); tx_err = ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, 0); if (tx_err) netdev_err(vsi->netdev, "Failed stop Tx rings, VSI %d error %d\n", vsi->vsi_num, tx_err); rx_err = ice_vsi_stop_rx_rings(vsi); if (rx_err) netdev_err(vsi->netdev, "Failed stop Rx rings, VSI %d error %d\n", vsi->vsi_num, rx_err); ice_napi_disable_all(vsi); if (test_bit(ICE_FLAG_LINK_DOWN_ON_CLOSE_ENA, vsi->back->flags)) { link_err = ice_force_phys_link_state(vsi, false); if (link_err) netdev_err(vsi->netdev, "Failed to set physical link down, VSI %d error %d\n", vsi->vsi_num, link_err); } ice_for_each_txq(vsi, i) ice_clean_tx_ring(vsi->tx_rings[i]); ice_for_each_rxq(vsi, i) ice_clean_rx_ring(vsi->rx_rings[i]); if (tx_err || rx_err || link_err) { netdev_err(vsi->netdev, "Failed to close VSI 0x%04X on switch 0x%04X\n", vsi->vsi_num, vsi->vsw->sw_id); return -EIO; } return 0; } /** * ice_vsi_setup_tx_rings - Allocate VSI Tx queue resources * @vsi: VSI having resources allocated * * Return 0 on success, negative on failure */ int ice_vsi_setup_tx_rings(struct ice_vsi *vsi) { int i, err = 0; if (!vsi->num_txq) { dev_err(&vsi->back->pdev->dev, "VSI %d has 0 Tx queues\n", vsi->vsi_num); return -EINVAL; } ice_for_each_txq(vsi, i) { vsi->tx_rings[i]->netdev = vsi->netdev; err = ice_setup_tx_ring(vsi->tx_rings[i]); if (err) break; } return err; } /** * ice_vsi_setup_rx_rings - Allocate VSI Rx queue resources * @vsi: VSI having resources allocated * * Return 0 on success, negative on failure */ int ice_vsi_setup_rx_rings(struct ice_vsi *vsi) { int i, err = 0; if (!vsi->num_rxq) { dev_err(&vsi->back->pdev->dev, "VSI %d has 0 Rx queues\n", vsi->vsi_num); return -EINVAL; } ice_for_each_rxq(vsi, i) { vsi->rx_rings[i]->netdev = vsi->netdev; err = ice_setup_rx_ring(vsi->rx_rings[i]); if (err) break; } return err; } /** * ice_vsi_open - Called when a network interface is made active * @vsi: the VSI to open * * Initialization of the VSI * * Returns 0 on success, negative value on error */ static int ice_vsi_open(struct ice_vsi *vsi) { char int_name[ICE_INT_NAME_STR_LEN]; struct ice_pf *pf = vsi->back; int err; /* allocate descriptors */ err = ice_vsi_setup_tx_rings(vsi); if (err) goto err_setup_tx; err = ice_vsi_setup_rx_rings(vsi); if (err) goto err_setup_rx; err = ice_vsi_cfg(vsi); if (err) goto err_setup_rx; snprintf(int_name, sizeof(int_name) - 1, "%s-%s", dev_driver_string(&pf->pdev->dev), vsi->netdev->name); err = ice_vsi_req_irq_msix(vsi, int_name); if (err) goto err_setup_rx; /* Notify the stack of the actual queue counts. */ err = netif_set_real_num_tx_queues(vsi->netdev, vsi->num_txq); if (err) goto err_set_qs; err = netif_set_real_num_rx_queues(vsi->netdev, vsi->num_rxq); if (err) goto err_set_qs; err = ice_up_complete(vsi); if (err) goto err_up_complete; return 0; err_up_complete: ice_down(vsi); err_set_qs: ice_vsi_free_irq(vsi); err_setup_rx: ice_vsi_free_rx_rings(vsi); err_setup_tx: ice_vsi_free_tx_rings(vsi); return err; } /** * ice_vsi_release_all - Delete all VSIs * @pf: PF from which all VSIs are being removed */ static void ice_vsi_release_all(struct ice_pf *pf) { int err, i; if (!pf->vsi) return; ice_for_each_vsi(pf, i) { if (!pf->vsi[i]) continue; err = ice_vsi_release(pf->vsi[i]); if (err) dev_dbg(&pf->pdev->dev, "Failed to release pf->vsi[%d], err %d, vsi_num = %d\n", i, err, pf->vsi[i]->vsi_num); } } /** * ice_ena_vsi - resume a VSI * @vsi: the VSI being resume * @locked: is the rtnl_lock already held */ static int ice_ena_vsi(struct ice_vsi *vsi, bool locked) { int err = 0; if (!test_bit(__ICE_NEEDS_RESTART, vsi->state)) return 0; clear_bit(__ICE_NEEDS_RESTART, vsi->state); if (vsi->netdev && vsi->type == ICE_VSI_PF) { if (netif_running(vsi->netdev)) { if (!locked) rtnl_lock(); err = ice_open(vsi->netdev); if (!locked) rtnl_unlock(); } } return err; } /** * ice_pf_ena_all_vsi - Resume all VSIs on a PF * @pf: the PF * @locked: is the rtnl_lock already held */ #ifdef CONFIG_DCB int ice_pf_ena_all_vsi(struct ice_pf *pf, bool locked) { int v; ice_for_each_vsi(pf, v) if (pf->vsi[v]) if (ice_ena_vsi(pf->vsi[v], locked)) return -EIO; return 0; } #endif /* CONFIG_DCB */ /** * ice_vsi_rebuild_by_type - Rebuild VSI of a given type * @pf: pointer to the PF instance * @type: VSI type to rebuild * * Iterates through the pf->vsi array and rebuilds VSIs of the requested type */ static int ice_vsi_rebuild_by_type(struct ice_pf *pf, enum ice_vsi_type type) { enum ice_status status; int i, err; ice_for_each_vsi(pf, i) { struct ice_vsi *vsi = pf->vsi[i]; if (!vsi || vsi->type != type) continue; /* rebuild the VSI */ err = ice_vsi_rebuild(vsi); if (err) { dev_err(&pf->pdev->dev, "rebuild VSI failed, err %d, VSI index %d, type %d\n", err, vsi->idx, type); return err; } /* replay filters for the VSI */ status = ice_replay_vsi(&pf->hw, vsi->idx); if (status) { dev_err(&pf->pdev->dev, "replay VSI failed, status %d, VSI index %d, type %d\n", status, vsi->idx, type); return -EIO; } /* Re-map HW VSI number, using VSI handle that has been * previously validated in ice_replay_vsi() call above */ vsi->vsi_num = ice_get_hw_vsi_num(&pf->hw, vsi->idx); /* enable the VSI */ err = ice_ena_vsi(vsi, false); if (err) { dev_err(&pf->pdev->dev, "enable VSI failed, err %d, VSI index %d, type %d\n", err, vsi->idx, type); return err; } dev_info(&pf->pdev->dev, "VSI rebuilt. VSI index %d, type %d\n", vsi->idx, type); } return 0; } /** * ice_update_pf_netdev_link - Update PF netdev link status * @pf: pointer to the PF instance */ static void ice_update_pf_netdev_link(struct ice_pf *pf) { bool link_up; int i; ice_for_each_vsi(pf, i) { struct ice_vsi *vsi = pf->vsi[i]; if (!vsi || vsi->type != ICE_VSI_PF) return; ice_get_link_status(pf->vsi[i]->port_info, &link_up); if (link_up) { netif_carrier_on(pf->vsi[i]->netdev); netif_tx_wake_all_queues(pf->vsi[i]->netdev); } else { netif_carrier_off(pf->vsi[i]->netdev); netif_tx_stop_all_queues(pf->vsi[i]->netdev); } } } /** * ice_rebuild - rebuild after reset * @pf: PF to rebuild * @reset_type: type of reset */ static void ice_rebuild(struct ice_pf *pf, enum ice_reset_req reset_type) { struct device *dev = &pf->pdev->dev; struct ice_hw *hw = &pf->hw; enum ice_status ret; int err; if (test_bit(__ICE_DOWN, pf->state)) goto clear_recovery; dev_dbg(dev, "rebuilding PF after reset_type=%d\n", reset_type); ret = ice_init_all_ctrlq(hw); if (ret) { dev_err(dev, "control queues init failed %d\n", ret); goto err_init_ctrlq; } /* if DDP was previously loaded successfully */ if (!ice_is_safe_mode(pf)) { /* reload the SW DB of filter tables */ if (reset_type == ICE_RESET_PFR) ice_fill_blk_tbls(hw); else /* Reload DDP Package after CORER/GLOBR reset */ ice_load_pkg(NULL, pf); } ret = ice_clear_pf_cfg(hw); if (ret) { dev_err(dev, "clear PF configuration failed %d\n", ret); goto err_init_ctrlq; } ice_clear_pxe_mode(hw); ret = ice_get_caps(hw); if (ret) { dev_err(dev, "ice_get_caps failed %d\n", ret); goto err_init_ctrlq; } err = ice_sched_init_port(hw->port_info); if (err) goto err_sched_init_port; err = ice_update_link_info(hw->port_info); if (err) dev_err(&pf->pdev->dev, "Get link status error %d\n", err); /* start misc vector */ err = ice_req_irq_msix_misc(pf); if (err) { dev_err(dev, "misc vector setup failed: %d\n", err); goto err_sched_init_port; } if (test_bit(ICE_FLAG_DCB_ENA, pf->flags)) ice_dcb_rebuild(pf); /* rebuild PF VSI */ err = ice_vsi_rebuild_by_type(pf, ICE_VSI_PF); if (err) { dev_err(dev, "PF VSI rebuild failed: %d\n", err); goto err_vsi_rebuild; } if (test_bit(ICE_FLAG_SRIOV_ENA, pf->flags)) { err = ice_vsi_rebuild_by_type(pf, ICE_VSI_VF); if (err) { dev_err(dev, "VF VSI rebuild failed: %d\n", err); goto err_vsi_rebuild; } } ice_update_pf_netdev_link(pf); /* tell the firmware we are up */ ret = ice_send_version(pf); if (ret) { dev_err(dev, "Rebuild failed due to error sending driver version: %d\n", ret); goto err_vsi_rebuild; } ice_replay_post(hw); /* if we get here, reset flow is successful */ clear_bit(__ICE_RESET_FAILED, pf->state); return; err_vsi_rebuild: err_sched_init_port: ice_sched_cleanup_all(hw); err_init_ctrlq: ice_shutdown_all_ctrlq(hw); set_bit(__ICE_RESET_FAILED, pf->state); clear_recovery: /* set this bit in PF state to control service task scheduling */ set_bit(__ICE_NEEDS_RESTART, pf->state); dev_err(dev, "Rebuild failed, unload and reload driver\n"); } /** * ice_change_mtu - NDO callback to change the MTU * @netdev: network interface device structure * @new_mtu: new value for maximum frame size * * Returns 0 on success, negative on failure */ static int ice_change_mtu(struct net_device *netdev, int new_mtu) { struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; struct ice_pf *pf = vsi->back; u8 count = 0; if (new_mtu == netdev->mtu) { netdev_warn(netdev, "MTU is already %u\n", netdev->mtu); return 0; } if (new_mtu < netdev->min_mtu) { netdev_err(netdev, "new MTU invalid. min_mtu is %d\n", netdev->min_mtu); return -EINVAL; } else if (new_mtu > netdev->max_mtu) { netdev_err(netdev, "new MTU invalid. max_mtu is %d\n", netdev->min_mtu); return -EINVAL; } /* if a reset is in progress, wait for some time for it to complete */ do { if (ice_is_reset_in_progress(pf->state)) { count++; usleep_range(1000, 2000); } else { break; } } while (count < 100); if (count == 100) { netdev_err(netdev, "can't change MTU. Device is busy\n"); return -EBUSY; } netdev->mtu = new_mtu; /* if VSI is up, bring it down and then back up */ if (!test_and_set_bit(__ICE_DOWN, vsi->state)) { int err; err = ice_down(vsi); if (err) { netdev_err(netdev, "change MTU if_up err %d\n", err); return err; } err = ice_up(vsi); if (err) { netdev_err(netdev, "change MTU if_up err %d\n", err); return err; } } netdev_info(netdev, "changed MTU to %d\n", new_mtu); return 0; } /** * ice_set_rss - Set RSS keys and lut * @vsi: Pointer to VSI structure * @seed: RSS hash seed * @lut: Lookup table * @lut_size: Lookup table size * * Returns 0 on success, negative on failure */ int ice_set_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size) { struct ice_pf *pf = vsi->back; struct ice_hw *hw = &pf->hw; enum ice_status status; if (seed) { struct ice_aqc_get_set_rss_keys *buf = (struct ice_aqc_get_set_rss_keys *)seed; status = ice_aq_set_rss_key(hw, vsi->idx, buf); if (status) { dev_err(&pf->pdev->dev, "Cannot set RSS key, err %d aq_err %d\n", status, hw->adminq.rq_last_status); return -EIO; } } if (lut) { status = ice_aq_set_rss_lut(hw, vsi->idx, vsi->rss_lut_type, lut, lut_size); if (status) { dev_err(&pf->pdev->dev, "Cannot set RSS lut, err %d aq_err %d\n", status, hw->adminq.rq_last_status); return -EIO; } } return 0; } /** * ice_get_rss - Get RSS keys and lut * @vsi: Pointer to VSI structure * @seed: Buffer to store the keys * @lut: Buffer to store the lookup table entries * @lut_size: Size of buffer to store the lookup table entries * * Returns 0 on success, negative on failure */ int ice_get_rss(struct ice_vsi *vsi, u8 *seed, u8 *lut, u16 lut_size) { struct ice_pf *pf = vsi->back; struct ice_hw *hw = &pf->hw; enum ice_status status; if (seed) { struct ice_aqc_get_set_rss_keys *buf = (struct ice_aqc_get_set_rss_keys *)seed; status = ice_aq_get_rss_key(hw, vsi->idx, buf); if (status) { dev_err(&pf->pdev->dev, "Cannot get RSS key, err %d aq_err %d\n", status, hw->adminq.rq_last_status); return -EIO; } } if (lut) { status = ice_aq_get_rss_lut(hw, vsi->idx, vsi->rss_lut_type, lut, lut_size); if (status) { dev_err(&pf->pdev->dev, "Cannot get RSS lut, err %d aq_err %d\n", status, hw->adminq.rq_last_status); return -EIO; } } return 0; } /** * ice_bridge_getlink - Get the hardware bridge mode * @skb: skb buff * @pid: process ID * @seq: RTNL message seq * @dev: the netdev being configured * @filter_mask: filter mask passed in * @nlflags: netlink flags passed in * * Return the bridge mode (VEB/VEPA) */ static int ice_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, struct net_device *dev, u32 filter_mask, int nlflags) { struct ice_netdev_priv *np = netdev_priv(dev); struct ice_vsi *vsi = np->vsi; struct ice_pf *pf = vsi->back; u16 bmode; bmode = pf->first_sw->bridge_mode; return ndo_dflt_bridge_getlink(skb, pid, seq, dev, bmode, 0, 0, nlflags, filter_mask, NULL); } /** * ice_vsi_update_bridge_mode - Update VSI for switching bridge mode (VEB/VEPA) * @vsi: Pointer to VSI structure * @bmode: Hardware bridge mode (VEB/VEPA) * * Returns 0 on success, negative on failure */ static int ice_vsi_update_bridge_mode(struct ice_vsi *vsi, u16 bmode) { struct device *dev = &vsi->back->pdev->dev; struct ice_aqc_vsi_props *vsi_props; struct ice_hw *hw = &vsi->back->hw; struct ice_vsi_ctx *ctxt; enum ice_status status; int ret = 0; vsi_props = &vsi->info; ctxt = devm_kzalloc(dev, sizeof(*ctxt), GFP_KERNEL); if (!ctxt) return -ENOMEM; ctxt->info = vsi->info; if (bmode == BRIDGE_MODE_VEB) /* change from VEPA to VEB mode */ ctxt->info.sw_flags |= ICE_AQ_VSI_SW_FLAG_ALLOW_LB; else /* change from VEB to VEPA mode */ ctxt->info.sw_flags &= ~ICE_AQ_VSI_SW_FLAG_ALLOW_LB; ctxt->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SW_VALID); status = ice_update_vsi(hw, vsi->idx, ctxt, NULL); if (status) { dev_err(dev, "update VSI for bridge mode failed, bmode = %d err %d aq_err %d\n", bmode, status, hw->adminq.sq_last_status); ret = -EIO; goto out; } /* Update sw flags for book keeping */ vsi_props->sw_flags = ctxt->info.sw_flags; out: devm_kfree(dev, ctxt); return ret; } /** * ice_bridge_setlink - Set the hardware bridge mode * @dev: the netdev being configured * @nlh: RTNL message * @flags: bridge setlink flags * @extack: netlink extended ack * * Sets the bridge mode (VEB/VEPA) of the switch to which the netdev (VSI) is * hooked up to. Iterates through the PF VSI list and sets the loopback mode (if * not already set for all VSIs connected to this switch. And also update the * unicast switch filter rules for the corresponding switch of the netdev. */ static int ice_bridge_setlink(struct net_device *dev, struct nlmsghdr *nlh, u16 __always_unused flags, struct netlink_ext_ack __always_unused *extack) { struct ice_netdev_priv *np = netdev_priv(dev); struct ice_pf *pf = np->vsi->back; struct nlattr *attr, *br_spec; struct ice_hw *hw = &pf->hw; enum ice_status status; struct ice_sw *pf_sw; int rem, v, err = 0; pf_sw = pf->first_sw; /* find the attribute in the netlink message */ br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); nla_for_each_nested(attr, br_spec, rem) { __u16 mode; if (nla_type(attr) != IFLA_BRIDGE_MODE) continue; mode = nla_get_u16(attr); if (mode != BRIDGE_MODE_VEPA && mode != BRIDGE_MODE_VEB) return -EINVAL; /* Continue if bridge mode is not being flipped */ if (mode == pf_sw->bridge_mode) continue; /* Iterates through the PF VSI list and update the loopback * mode of the VSI */ ice_for_each_vsi(pf, v) { if (!pf->vsi[v]) continue; err = ice_vsi_update_bridge_mode(pf->vsi[v], mode); if (err) return err; } hw->evb_veb = (mode == BRIDGE_MODE_VEB); /* Update the unicast switch filter rules for the corresponding * switch of the netdev */ status = ice_update_sw_rule_bridge_mode(hw); if (status) { netdev_err(dev, "switch rule update failed, mode = %d err %d aq_err %d\n", mode, status, hw->adminq.sq_last_status); /* revert hw->evb_veb */ hw->evb_veb = (pf_sw->bridge_mode == BRIDGE_MODE_VEB); return -EIO; } pf_sw->bridge_mode = mode; } return 0; } /** * ice_tx_timeout - Respond to a Tx Hang * @netdev: network interface device structure */ static void ice_tx_timeout(struct net_device *netdev) { struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_ring *tx_ring = NULL; struct ice_vsi *vsi = np->vsi; struct ice_pf *pf = vsi->back; int hung_queue = -1; u32 i; pf->tx_timeout_count++; /* find the stopped queue the same way dev_watchdog() does */ for (i = 0; i < netdev->num_tx_queues; i++) { unsigned long trans_start; struct netdev_queue *q; q = netdev_get_tx_queue(netdev, i); trans_start = q->trans_start; if (netif_xmit_stopped(q) && time_after(jiffies, trans_start + netdev->watchdog_timeo)) { hung_queue = i; break; } } if (i == netdev->num_tx_queues) netdev_info(netdev, "tx_timeout: no netdev hung queue found\n"); else /* now that we have an index, find the tx_ring struct */ for (i = 0; i < vsi->num_txq; i++) if (vsi->tx_rings[i] && vsi->tx_rings[i]->desc) if (hung_queue == vsi->tx_rings[i]->q_index) { tx_ring = vsi->tx_rings[i]; break; } /* Reset recovery level if enough time has elapsed after last timeout. * Also ensure no new reset action happens before next timeout period. */ if (time_after(jiffies, (pf->tx_timeout_last_recovery + HZ * 20))) pf->tx_timeout_recovery_level = 1; else if (time_before(jiffies, (pf->tx_timeout_last_recovery + netdev->watchdog_timeo))) return; if (tx_ring) { struct ice_hw *hw = &pf->hw; u32 head, val = 0; head = (rd32(hw, QTX_COMM_HEAD(vsi->txq_map[hung_queue])) & QTX_COMM_HEAD_HEAD_M) >> QTX_COMM_HEAD_HEAD_S; /* Read interrupt register */ val = rd32(hw, GLINT_DYN_CTL(tx_ring->q_vector->reg_idx)); netdev_info(netdev, "tx_timeout: VSI_num: %d, Q %d, NTC: 0x%x, HW_HEAD: 0x%x, NTU: 0x%x, INT: 0x%x\n", vsi->vsi_num, hung_queue, tx_ring->next_to_clean, head, tx_ring->next_to_use, val); } pf->tx_timeout_last_recovery = jiffies; netdev_info(netdev, "tx_timeout recovery level %d, hung_queue %d\n", pf->tx_timeout_recovery_level, hung_queue); switch (pf->tx_timeout_recovery_level) { case 1: set_bit(__ICE_PFR_REQ, pf->state); break; case 2: set_bit(__ICE_CORER_REQ, pf->state); break; case 3: set_bit(__ICE_GLOBR_REQ, pf->state); break; default: netdev_err(netdev, "tx_timeout recovery unsuccessful, device is in unrecoverable state.\n"); set_bit(__ICE_DOWN, pf->state); set_bit(__ICE_NEEDS_RESTART, vsi->state); set_bit(__ICE_SERVICE_DIS, pf->state); break; } ice_service_task_schedule(pf); pf->tx_timeout_recovery_level++; } /** * ice_open - Called when a network interface becomes active * @netdev: network interface device structure * * 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 netdev watchdog is enabled, * and the stack is notified that the interface is ready. * * Returns 0 on success, negative value on failure */ int ice_open(struct net_device *netdev) { struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; struct ice_port_info *pi; int err; if (test_bit(__ICE_NEEDS_RESTART, vsi->back->state)) { netdev_err(netdev, "driver needs to be unloaded and reloaded\n"); return -EIO; } netif_carrier_off(netdev); pi = vsi->port_info; err = ice_update_link_info(pi); if (err) { netdev_err(netdev, "Failed to get link info, error %d\n", err); return err; } /* Set PHY if there is media, otherwise, turn off PHY */ if (pi->phy.link_info.link_info & ICE_AQ_MEDIA_AVAILABLE) { err = ice_force_phys_link_state(vsi, true); if (err) { netdev_err(netdev, "Failed to set physical link up, error %d\n", err); return err; } } else { err = ice_aq_set_link_restart_an(pi, false, NULL); if (err) { netdev_err(netdev, "Failed to set PHY state, VSI %d error %d\n", vsi->vsi_num, err); return err; } set_bit(ICE_FLAG_NO_MEDIA, vsi->back->flags); } err = ice_vsi_open(vsi); if (err) netdev_err(netdev, "Failed to open VSI 0x%04X on switch 0x%04X\n", vsi->vsi_num, vsi->vsw->sw_id); return err; } /** * ice_stop - Disables a network interface * @netdev: network interface device structure * * The stop entry point is called when an interface is de-activated by the OS, * and the netdevice enters the DOWN state. The hardware is still under the * driver's control, but the netdev interface is disabled. * * Returns success only - not allowed to fail */ int ice_stop(struct net_device *netdev) { struct ice_netdev_priv *np = netdev_priv(netdev); struct ice_vsi *vsi = np->vsi; ice_vsi_close(vsi); return 0; } /** * ice_features_check - Validate encapsulated packet conforms to limits * @skb: skb buffer * @netdev: This port's netdev * @features: Offload features that the stack believes apply */ static netdev_features_t ice_features_check(struct sk_buff *skb, struct net_device __always_unused *netdev, netdev_features_t features) { size_t len; /* No point in doing any of this if neither checksum nor GSO are * being requested for this frame. We can rule out both by just * checking for CHECKSUM_PARTIAL */ if (skb->ip_summed != CHECKSUM_PARTIAL) return features; /* We cannot support GSO if the MSS is going to be less than * 64 bytes. If it is then we need to drop support for GSO. */ if (skb_is_gso(skb) && (skb_shinfo(skb)->gso_size < 64)) features &= ~NETIF_F_GSO_MASK; len = skb_network_header(skb) - skb->data; if (len & ~(ICE_TXD_MACLEN_MAX)) goto out_rm_features; len = skb_transport_header(skb) - skb_network_header(skb); if (len & ~(ICE_TXD_IPLEN_MAX)) goto out_rm_features; if (skb->encapsulation) { len = skb_inner_network_header(skb) - skb_transport_header(skb); if (len & ~(ICE_TXD_L4LEN_MAX)) goto out_rm_features; len = skb_inner_transport_header(skb) - skb_inner_network_header(skb); if (len & ~(ICE_TXD_IPLEN_MAX)) goto out_rm_features; } return features; out_rm_features: return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); } static const struct net_device_ops ice_netdev_safe_mode_ops = { .ndo_open = ice_open, .ndo_stop = ice_stop, .ndo_start_xmit = ice_start_xmit, .ndo_set_mac_address = ice_set_mac_address, .ndo_validate_addr = eth_validate_addr, .ndo_change_mtu = ice_change_mtu, .ndo_get_stats64 = ice_get_stats64, .ndo_tx_timeout = ice_tx_timeout, }; static const struct net_device_ops ice_netdev_ops = { .ndo_open = ice_open, .ndo_stop = ice_stop, .ndo_start_xmit = ice_start_xmit, .ndo_features_check = ice_features_check, .ndo_set_rx_mode = ice_set_rx_mode, .ndo_set_mac_address = ice_set_mac_address, .ndo_validate_addr = eth_validate_addr, .ndo_change_mtu = ice_change_mtu, .ndo_get_stats64 = ice_get_stats64, .ndo_set_vf_spoofchk = ice_set_vf_spoofchk, .ndo_set_vf_mac = ice_set_vf_mac, .ndo_get_vf_config = ice_get_vf_cfg, .ndo_set_vf_trust = ice_set_vf_trust, .ndo_set_vf_vlan = ice_set_vf_port_vlan, .ndo_set_vf_link_state = ice_set_vf_link_state, .ndo_vlan_rx_add_vid = ice_vlan_rx_add_vid, .ndo_vlan_rx_kill_vid = ice_vlan_rx_kill_vid, .ndo_set_features = ice_set_features, .ndo_bridge_getlink = ice_bridge_getlink, .ndo_bridge_setlink = ice_bridge_setlink, .ndo_fdb_add = ice_fdb_add, .ndo_fdb_del = ice_fdb_del, .ndo_tx_timeout = ice_tx_timeout, };
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