diff options
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c | 4167 |
1 files changed, 4167 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c new file mode 100644 index 000000000..a980d3378 --- /dev/null +++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c @@ -0,0 +1,4167 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2018, Intel Corporation. */ + +#include "ice.h" +#include "ice_base.h" +#include "ice_lib.h" +#include "ice_fltr.h" + +/** + * ice_validate_vf_id - helper to check if VF ID is valid + * @pf: pointer to the PF structure + * @vf_id: the ID of the VF to check + */ +static int ice_validate_vf_id(struct ice_pf *pf, u16 vf_id) +{ + /* vf_id range is only valid for 0-255, and should always be unsigned */ + if (vf_id >= pf->num_alloc_vfs) { + dev_err(ice_pf_to_dev(pf), "Invalid VF ID: %u\n", vf_id); + return -EINVAL; + } + return 0; +} + +/** + * ice_check_vf_init - helper to check if VF init complete + * @pf: pointer to the PF structure + * @vf: the pointer to the VF to check + */ +static int ice_check_vf_init(struct ice_pf *pf, struct ice_vf *vf) +{ + if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states)) { + dev_err(ice_pf_to_dev(pf), "VF ID: %u in reset. Try again.\n", + vf->vf_id); + return -EBUSY; + } + return 0; +} + +/** + * ice_err_to_virt_err - translate errors for VF return code + * @ice_err: error return code + */ +static enum virtchnl_status_code ice_err_to_virt_err(enum ice_status ice_err) +{ + switch (ice_err) { + case ICE_SUCCESS: + return VIRTCHNL_STATUS_SUCCESS; + case ICE_ERR_BAD_PTR: + case ICE_ERR_INVAL_SIZE: + case ICE_ERR_DEVICE_NOT_SUPPORTED: + case ICE_ERR_PARAM: + case ICE_ERR_CFG: + return VIRTCHNL_STATUS_ERR_PARAM; + case ICE_ERR_NO_MEMORY: + return VIRTCHNL_STATUS_ERR_NO_MEMORY; + case ICE_ERR_NOT_READY: + case ICE_ERR_RESET_FAILED: + case ICE_ERR_FW_API_VER: + case ICE_ERR_AQ_ERROR: + case ICE_ERR_AQ_TIMEOUT: + case ICE_ERR_AQ_FULL: + case ICE_ERR_AQ_NO_WORK: + case ICE_ERR_AQ_EMPTY: + return VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR; + default: + return VIRTCHNL_STATUS_ERR_NOT_SUPPORTED; + } +} + +/** + * ice_vc_vf_broadcast - Broadcast a message to all VFs on PF + * @pf: pointer to the PF structure + * @v_opcode: operation code + * @v_retval: return value + * @msg: pointer to the msg buffer + * @msglen: msg length + */ +static void +ice_vc_vf_broadcast(struct ice_pf *pf, enum virtchnl_ops v_opcode, + enum virtchnl_status_code v_retval, u8 *msg, u16 msglen) +{ + struct ice_hw *hw = &pf->hw; + unsigned int i; + + ice_for_each_vf(pf, i) { + struct ice_vf *vf = &pf->vf[i]; + + /* Not all vfs are enabled so skip the ones that are not */ + if (!test_bit(ICE_VF_STATE_INIT, vf->vf_states) && + !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) + continue; + + /* Ignore return value on purpose - a given VF may fail, but + * we need to keep going and send to all of them + */ + ice_aq_send_msg_to_vf(hw, vf->vf_id, v_opcode, v_retval, msg, + msglen, NULL); + } +} + +/** + * ice_set_pfe_link - Set the link speed/status of the virtchnl_pf_event + * @vf: pointer to the VF structure + * @pfe: pointer to the virtchnl_pf_event to set link speed/status for + * @ice_link_speed: link speed specified by ICE_AQ_LINK_SPEED_* + * @link_up: whether or not to set the link up/down + */ +static void +ice_set_pfe_link(struct ice_vf *vf, struct virtchnl_pf_event *pfe, + int ice_link_speed, bool link_up) +{ + if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) { + pfe->event_data.link_event_adv.link_status = link_up; + /* Speed in Mbps */ + pfe->event_data.link_event_adv.link_speed = + ice_conv_link_speed_to_virtchnl(true, ice_link_speed); + } else { + pfe->event_data.link_event.link_status = link_up; + /* Legacy method for virtchnl link speeds */ + pfe->event_data.link_event.link_speed = + (enum virtchnl_link_speed) + ice_conv_link_speed_to_virtchnl(false, ice_link_speed); + } +} + +/** + * ice_vf_has_no_qs_ena - check if the VF has any Rx or Tx queues enabled + * @vf: the VF to check + * + * Returns true if the VF has no Rx and no Tx queues enabled and returns false + * otherwise + */ +static bool ice_vf_has_no_qs_ena(struct ice_vf *vf) +{ + return (!bitmap_weight(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF) && + !bitmap_weight(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF)); +} + +/** + * ice_is_vf_link_up - check if the VF's link is up + * @vf: VF to check if link is up + */ +static bool ice_is_vf_link_up(struct ice_vf *vf) +{ + struct ice_pf *pf = vf->pf; + + if (ice_check_vf_init(pf, vf)) + return false; + + if (ice_vf_has_no_qs_ena(vf)) + return false; + else if (vf->link_forced) + return vf->link_up; + else + return pf->hw.port_info->phy.link_info.link_info & + ICE_AQ_LINK_UP; +} + +/** + * ice_vc_notify_vf_link_state - Inform a VF of link status + * @vf: pointer to the VF structure + * + * send a link status message to a single VF + */ +static void ice_vc_notify_vf_link_state(struct ice_vf *vf) +{ + struct virtchnl_pf_event pfe = { 0 }; + struct ice_hw *hw = &vf->pf->hw; + + pfe.event = VIRTCHNL_EVENT_LINK_CHANGE; + pfe.severity = PF_EVENT_SEVERITY_INFO; + + if (ice_is_vf_link_up(vf)) + ice_set_pfe_link(vf, &pfe, + hw->port_info->phy.link_info.link_speed, true); + else + ice_set_pfe_link(vf, &pfe, ICE_AQ_LINK_SPEED_UNKNOWN, false); + + ice_aq_send_msg_to_vf(hw, vf->vf_id, VIRTCHNL_OP_EVENT, + VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe, + sizeof(pfe), NULL); +} + +/** + * ice_vf_invalidate_vsi - invalidate vsi_idx/vsi_num to remove VSI access + * @vf: VF to remove access to VSI for + */ +static void ice_vf_invalidate_vsi(struct ice_vf *vf) +{ + vf->lan_vsi_idx = ICE_NO_VSI; + vf->lan_vsi_num = ICE_NO_VSI; +} + +/** + * ice_vf_vsi_release - invalidate the VF's VSI after freeing it + * @vf: invalidate this VF's VSI after freeing it + */ +static void ice_vf_vsi_release(struct ice_vf *vf) +{ + ice_vsi_release(vf->pf->vsi[vf->lan_vsi_idx]); + ice_vf_invalidate_vsi(vf); +} + +/** + * ice_free_vf_res - Free a VF's resources + * @vf: pointer to the VF info + */ +static void ice_free_vf_res(struct ice_vf *vf) +{ + struct ice_pf *pf = vf->pf; + int i, last_vector_idx; + + /* First, disable VF's configuration API to prevent OS from + * accessing the VF's VSI after it's freed or invalidated. + */ + clear_bit(ICE_VF_STATE_INIT, vf->vf_states); + + /* free VSI and disconnect it from the parent uplink */ + if (vf->lan_vsi_idx != ICE_NO_VSI) { + ice_vf_vsi_release(vf); + vf->num_mac = 0; + } + + last_vector_idx = vf->first_vector_idx + pf->num_msix_per_vf - 1; + + /* clear VF MDD event information */ + memset(&vf->mdd_tx_events, 0, sizeof(vf->mdd_tx_events)); + memset(&vf->mdd_rx_events, 0, sizeof(vf->mdd_rx_events)); + + /* Disable interrupts so that VF starts in a known state */ + for (i = vf->first_vector_idx; i <= last_vector_idx; i++) { + wr32(&pf->hw, GLINT_DYN_CTL(i), GLINT_DYN_CTL_CLEARPBA_M); + ice_flush(&pf->hw); + } + /* reset some of the state variables keeping track of the resources */ + clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states); + clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states); +} + +/** + * ice_dis_vf_mappings + * @vf: pointer to the VF structure + */ +static void ice_dis_vf_mappings(struct ice_vf *vf) +{ + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + struct device *dev; + int first, last, v; + struct ice_hw *hw; + + hw = &pf->hw; + vsi = pf->vsi[vf->lan_vsi_idx]; + + dev = ice_pf_to_dev(pf); + wr32(hw, VPINT_ALLOC(vf->vf_id), 0); + wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), 0); + + first = vf->first_vector_idx; + last = first + pf->num_msix_per_vf - 1; + for (v = first; v <= last; v++) { + u32 reg; + + reg = (((1 << GLINT_VECT2FUNC_IS_PF_S) & + GLINT_VECT2FUNC_IS_PF_M) | + ((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) & + GLINT_VECT2FUNC_PF_NUM_M)); + wr32(hw, GLINT_VECT2FUNC(v), reg); + } + + if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG) + wr32(hw, VPLAN_TX_QBASE(vf->vf_id), 0); + else + dev_err(dev, "Scattered mode for VF Tx queues is not yet implemented\n"); + + if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG) + wr32(hw, VPLAN_RX_QBASE(vf->vf_id), 0); + else + dev_err(dev, "Scattered mode for VF Rx queues is not yet implemented\n"); +} + +/** + * ice_sriov_free_msix_res - Reset/free any used MSIX resources + * @pf: pointer to the PF structure + * + * Since no MSIX entries are taken from the pf->irq_tracker then just clear + * the pf->sriov_base_vector. + * + * Returns 0 on success, and -EINVAL on error. + */ +static int ice_sriov_free_msix_res(struct ice_pf *pf) +{ + struct ice_res_tracker *res; + + if (!pf) + return -EINVAL; + + res = pf->irq_tracker; + if (!res) + return -EINVAL; + + /* give back irq_tracker resources used */ + WARN_ON(pf->sriov_base_vector < res->num_entries); + + pf->sriov_base_vector = 0; + + return 0; +} + +/** + * ice_set_vf_state_qs_dis - Set VF queues state to disabled + * @vf: pointer to the VF structure + */ +void ice_set_vf_state_qs_dis(struct ice_vf *vf) +{ + /* Clear Rx/Tx enabled queues flag */ + bitmap_zero(vf->txq_ena, ICE_MAX_RSS_QS_PER_VF); + bitmap_zero(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF); + clear_bit(ICE_VF_STATE_QS_ENA, vf->vf_states); +} + +/** + * ice_dis_vf_qs - Disable the VF queues + * @vf: pointer to the VF structure + */ +static void ice_dis_vf_qs(struct ice_vf *vf) +{ + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + + vsi = pf->vsi[vf->lan_vsi_idx]; + + ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id); + ice_vsi_stop_all_rx_rings(vsi); + ice_set_vf_state_qs_dis(vf); +} + +/** + * ice_free_vfs - Free all VFs + * @pf: pointer to the PF structure + */ +void ice_free_vfs(struct ice_pf *pf) +{ + struct device *dev = ice_pf_to_dev(pf); + struct ice_hw *hw = &pf->hw; + unsigned int tmp, i; + + if (!pf->vf) + return; + + while (test_and_set_bit(__ICE_VF_DIS, pf->state)) + usleep_range(1000, 2000); + + /* Disable IOV before freeing resources. This lets any VF drivers + * running in the host get themselves cleaned up before we yank + * the carpet out from underneath their feet. + */ + if (!pci_vfs_assigned(pf->pdev)) + pci_disable_sriov(pf->pdev); + else + dev_warn(dev, "VFs are assigned - not disabling SR-IOV\n"); + + tmp = pf->num_alloc_vfs; + pf->num_qps_per_vf = 0; + pf->num_alloc_vfs = 0; + for (i = 0; i < tmp; i++) { + struct ice_vf *vf = &pf->vf[i]; + + mutex_lock(&vf->cfg_lock); + + ice_dis_vf_qs(vf); + + if (test_bit(ICE_VF_STATE_INIT, vf->vf_states)) { + /* disable VF qp mappings and set VF disable state */ + ice_dis_vf_mappings(vf); + set_bit(ICE_VF_STATE_DIS, vf->vf_states); + ice_free_vf_res(vf); + } + + mutex_unlock(&vf->cfg_lock); + + mutex_destroy(&vf->cfg_lock); + } + + if (ice_sriov_free_msix_res(pf)) + dev_err(dev, "Failed to free MSIX resources used by SR-IOV\n"); + + devm_kfree(dev, pf->vf); + pf->vf = NULL; + + /* This check is for when the driver is unloaded while VFs are + * assigned. Setting the number of VFs to 0 through sysfs is caught + * before this function ever gets called. + */ + if (!pci_vfs_assigned(pf->pdev)) { + unsigned int vf_id; + + /* Acknowledge VFLR for all VFs. Without this, VFs will fail to + * work correctly when SR-IOV gets re-enabled. + */ + for (vf_id = 0; vf_id < tmp; vf_id++) { + u32 reg_idx, bit_idx; + + reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32; + bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32; + wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx)); + } + } + clear_bit(__ICE_VF_DIS, pf->state); + clear_bit(ICE_FLAG_SRIOV_ENA, pf->flags); +} + +/** + * ice_trigger_vf_reset - Reset a VF on HW + * @vf: pointer to the VF structure + * @is_vflr: true if VFLR was issued, false if not + * @is_pfr: true if the reset was triggered due to a previous PFR + * + * Trigger hardware to start a reset for a particular VF. Expects the caller + * to wait the proper amount of time to allow hardware to reset the VF before + * it cleans up and restores VF functionality. + */ +static void ice_trigger_vf_reset(struct ice_vf *vf, bool is_vflr, bool is_pfr) +{ + struct ice_pf *pf = vf->pf; + u32 reg, reg_idx, bit_idx; + unsigned int vf_abs_id, i; + struct device *dev; + struct ice_hw *hw; + + dev = ice_pf_to_dev(pf); + hw = &pf->hw; + vf_abs_id = vf->vf_id + hw->func_caps.vf_base_id; + + /* Inform VF that it is no longer active, as a warning */ + clear_bit(ICE_VF_STATE_ACTIVE, vf->vf_states); + + /* Disable VF's configuration API during reset. The flag is re-enabled + * when it's safe again to access VF's VSI. + */ + clear_bit(ICE_VF_STATE_INIT, vf->vf_states); + + /* VF_MBX_ARQLEN and VF_MBX_ATQLEN are cleared by PFR, so the driver + * needs to clear them in the case of VFR/VFLR. If this is done for + * PFR, it can mess up VF resets because the VF driver may already + * have started cleanup by the time we get here. + */ + if (!is_pfr) { + wr32(hw, VF_MBX_ARQLEN(vf->vf_id), 0); + wr32(hw, VF_MBX_ATQLEN(vf->vf_id), 0); + } + + /* In the case of a VFLR, the HW has already reset the VF and we + * just need to clean up, so don't hit the VFRTRIG register. + */ + if (!is_vflr) { + /* reset VF using VPGEN_VFRTRIG reg */ + reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id)); + reg |= VPGEN_VFRTRIG_VFSWR_M; + wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg); + } + /* clear the VFLR bit in GLGEN_VFLRSTAT */ + reg_idx = (vf_abs_id) / 32; + bit_idx = (vf_abs_id) % 32; + wr32(hw, GLGEN_VFLRSTAT(reg_idx), BIT(bit_idx)); + ice_flush(hw); + + wr32(hw, PF_PCI_CIAA, + VF_DEVICE_STATUS | (vf_abs_id << PF_PCI_CIAA_VF_NUM_S)); + for (i = 0; i < ICE_PCI_CIAD_WAIT_COUNT; i++) { + reg = rd32(hw, PF_PCI_CIAD); + /* no transactions pending so stop polling */ + if ((reg & VF_TRANS_PENDING_M) == 0) + break; + + dev_err(dev, "VF %u PCI transactions stuck\n", vf->vf_id); + udelay(ICE_PCI_CIAD_WAIT_DELAY_US); + } +} + +/** + * ice_vsi_manage_pvid - Enable or disable port VLAN for VSI + * @vsi: the VSI to update + * @pvid_info: VLAN ID and QoS used to set the PVID VSI context field + * @enable: true for enable PVID false for disable + */ +static int ice_vsi_manage_pvid(struct ice_vsi *vsi, u16 pvid_info, bool enable) +{ + struct ice_hw *hw = &vsi->back->hw; + struct ice_aqc_vsi_props *info; + struct ice_vsi_ctx *ctxt; + enum ice_status status; + int ret = 0; + + ctxt = kzalloc(sizeof(*ctxt), GFP_KERNEL); + if (!ctxt) + return -ENOMEM; + + ctxt->info = vsi->info; + info = &ctxt->info; + if (enable) { + info->vlan_flags = ICE_AQ_VSI_VLAN_MODE_UNTAGGED | + ICE_AQ_VSI_PVLAN_INSERT_PVID | + ICE_AQ_VSI_VLAN_EMOD_STR; + info->sw_flags2 |= ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA; + } else { + info->vlan_flags = ICE_AQ_VSI_VLAN_EMOD_NOTHING | + ICE_AQ_VSI_VLAN_MODE_ALL; + info->sw_flags2 &= ~ICE_AQ_VSI_SW_FLAG_RX_VLAN_PRUNE_ENA; + } + + info->pvid = cpu_to_le16(pvid_info); + info->valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_VLAN_VALID | + ICE_AQ_VSI_PROP_SW_VALID); + + status = ice_update_vsi(hw, vsi->idx, ctxt, NULL); + if (status) { + dev_info(ice_hw_to_dev(hw), "update VSI for port VLAN failed, err %s aq_err %s\n", + ice_stat_str(status), + ice_aq_str(hw->adminq.sq_last_status)); + ret = -EIO; + goto out; + } + + vsi->info.vlan_flags = info->vlan_flags; + vsi->info.sw_flags2 = info->sw_flags2; + vsi->info.pvid = info->pvid; +out: + kfree(ctxt); + return ret; +} + +/** + * ice_vf_get_port_info - Get the VF's port info structure + * @vf: VF used to get the port info structure for + */ +static struct ice_port_info *ice_vf_get_port_info(struct ice_vf *vf) +{ + return vf->pf->hw.port_info; +} + +/** + * ice_vf_vsi_setup - Set up a VF VSI + * @vf: VF to setup VSI for + * + * Returns pointer to the successfully allocated VSI struct on success, + * otherwise returns NULL on failure. + */ +static struct ice_vsi *ice_vf_vsi_setup(struct ice_vf *vf) +{ + struct ice_port_info *pi = ice_vf_get_port_info(vf); + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + + vsi = ice_vsi_setup(pf, pi, ICE_VSI_VF, vf->vf_id); + + if (!vsi) { + dev_err(ice_pf_to_dev(pf), "Failed to create VF VSI\n"); + ice_vf_invalidate_vsi(vf); + return NULL; + } + + vf->lan_vsi_idx = vsi->idx; + vf->lan_vsi_num = vsi->vsi_num; + + return vsi; +} + +/** + * ice_calc_vf_first_vector_idx - Calculate MSIX vector index in the PF space + * @pf: pointer to PF structure + * @vf: pointer to VF that the first MSIX vector index is being calculated for + * + * This returns the first MSIX vector index in PF space that is used by this VF. + * This index is used when accessing PF relative registers such as + * GLINT_VECT2FUNC and GLINT_DYN_CTL. + * This will always be the OICR index in the AVF driver so any functionality + * using vf->first_vector_idx for queue configuration will have to increment by + * 1 to avoid meddling with the OICR index. + */ +static int ice_calc_vf_first_vector_idx(struct ice_pf *pf, struct ice_vf *vf) +{ + return pf->sriov_base_vector + vf->vf_id * pf->num_msix_per_vf; +} + +/** + * ice_vf_rebuild_host_vlan_cfg - add VLAN 0 filter or rebuild the Port VLAN + * @vf: VF to add MAC filters for + * + * Called after a VF VSI has been re-added/rebuilt during reset. The PF driver + * always re-adds either a VLAN 0 or port VLAN based filter after reset. + */ +static int ice_vf_rebuild_host_vlan_cfg(struct ice_vf *vf) +{ + struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx]; + struct device *dev = ice_pf_to_dev(vf->pf); + u16 vlan_id = 0; + int err; + + if (vf->port_vlan_info) { + err = ice_vsi_manage_pvid(vsi, vf->port_vlan_info, true); + if (err) { + dev_err(dev, "failed to configure port VLAN via VSI parameters for VF %u, error %d\n", + vf->vf_id, err); + return err; + } + + vlan_id = vf->port_vlan_info & VLAN_VID_MASK; + } + + /* vlan_id will either be 0 or the port VLAN number */ + err = ice_vsi_add_vlan(vsi, vlan_id, ICE_FWD_TO_VSI); + if (err) { + dev_err(dev, "failed to add %s VLAN %u filter for VF %u, error %d\n", + vf->port_vlan_info ? "port" : "", vlan_id, vf->vf_id, + err); + return err; + } + + return 0; +} + +/** + * ice_vf_rebuild_host_mac_cfg - add broadcast and the VF's perm_addr/LAA + * @vf: VF to add MAC filters for + * + * Called after a VF VSI has been re-added/rebuilt during reset. The PF driver + * always re-adds a broadcast filter and the VF's perm_addr/LAA after reset. + */ +static int ice_vf_rebuild_host_mac_cfg(struct ice_vf *vf) +{ + struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx]; + struct device *dev = ice_pf_to_dev(vf->pf); + enum ice_status status; + u8 broadcast[ETH_ALEN]; + + eth_broadcast_addr(broadcast); + status = ice_fltr_add_mac(vsi, broadcast, ICE_FWD_TO_VSI); + if (status) { + dev_err(dev, "failed to add broadcast MAC filter for VF %u, error %s\n", + vf->vf_id, ice_stat_str(status)); + return ice_status_to_errno(status); + } + + vf->num_mac++; + + if (is_valid_ether_addr(vf->dflt_lan_addr.addr)) { + status = ice_fltr_add_mac(vsi, vf->dflt_lan_addr.addr, + ICE_FWD_TO_VSI); + if (status) { + dev_err(dev, "failed to add default unicast MAC filter %pM for VF %u, error %s\n", + &vf->dflt_lan_addr.addr[0], vf->vf_id, + ice_stat_str(status)); + return ice_status_to_errno(status); + } + vf->num_mac++; + } + + return 0; +} + +/** + * ice_vf_set_host_trust_cfg - set trust setting based on pre-reset value + * @vf: VF to configure trust setting for + */ +static void ice_vf_set_host_trust_cfg(struct ice_vf *vf) +{ + if (vf->trusted) + set_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); + else + clear_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); +} + +/** + * ice_ena_vf_msix_mappings - enable VF MSIX mappings in hardware + * @vf: VF to enable MSIX mappings for + * + * Some of the registers need to be indexed/configured using hardware global + * device values and other registers need 0-based values, which represent PF + * based values. + */ +static void ice_ena_vf_msix_mappings(struct ice_vf *vf) +{ + int device_based_first_msix, device_based_last_msix; + int pf_based_first_msix, pf_based_last_msix, v; + struct ice_pf *pf = vf->pf; + int device_based_vf_id; + struct ice_hw *hw; + u32 reg; + + hw = &pf->hw; + pf_based_first_msix = vf->first_vector_idx; + pf_based_last_msix = (pf_based_first_msix + pf->num_msix_per_vf) - 1; + + device_based_first_msix = pf_based_first_msix + + pf->hw.func_caps.common_cap.msix_vector_first_id; + device_based_last_msix = + (device_based_first_msix + pf->num_msix_per_vf) - 1; + device_based_vf_id = vf->vf_id + hw->func_caps.vf_base_id; + + reg = (((device_based_first_msix << VPINT_ALLOC_FIRST_S) & + VPINT_ALLOC_FIRST_M) | + ((device_based_last_msix << VPINT_ALLOC_LAST_S) & + VPINT_ALLOC_LAST_M) | VPINT_ALLOC_VALID_M); + wr32(hw, VPINT_ALLOC(vf->vf_id), reg); + + reg = (((device_based_first_msix << VPINT_ALLOC_PCI_FIRST_S) + & VPINT_ALLOC_PCI_FIRST_M) | + ((device_based_last_msix << VPINT_ALLOC_PCI_LAST_S) & + VPINT_ALLOC_PCI_LAST_M) | VPINT_ALLOC_PCI_VALID_M); + wr32(hw, VPINT_ALLOC_PCI(vf->vf_id), reg); + + /* map the interrupts to its functions */ + for (v = pf_based_first_msix; v <= pf_based_last_msix; v++) { + reg = (((device_based_vf_id << GLINT_VECT2FUNC_VF_NUM_S) & + GLINT_VECT2FUNC_VF_NUM_M) | + ((hw->pf_id << GLINT_VECT2FUNC_PF_NUM_S) & + GLINT_VECT2FUNC_PF_NUM_M)); + wr32(hw, GLINT_VECT2FUNC(v), reg); + } + + /* Map mailbox interrupt to VF MSI-X vector 0 */ + wr32(hw, VPINT_MBX_CTL(device_based_vf_id), VPINT_MBX_CTL_CAUSE_ENA_M); +} + +/** + * ice_ena_vf_q_mappings - enable Rx/Tx queue mappings for a VF + * @vf: VF to enable the mappings for + * @max_txq: max Tx queues allowed on the VF's VSI + * @max_rxq: max Rx queues allowed on the VF's VSI + */ +static void ice_ena_vf_q_mappings(struct ice_vf *vf, u16 max_txq, u16 max_rxq) +{ + struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx]; + struct device *dev = ice_pf_to_dev(vf->pf); + struct ice_hw *hw = &vf->pf->hw; + u32 reg; + + /* set regardless of mapping mode */ + wr32(hw, VPLAN_TXQ_MAPENA(vf->vf_id), VPLAN_TXQ_MAPENA_TX_ENA_M); + + /* VF Tx queues allocation */ + if (vsi->tx_mapping_mode == ICE_VSI_MAP_CONTIG) { + /* set the VF PF Tx queue range + * VFNUMQ value should be set to (number of queues - 1). A value + * of 0 means 1 queue and a value of 255 means 256 queues + */ + reg = (((vsi->txq_map[0] << VPLAN_TX_QBASE_VFFIRSTQ_S) & + VPLAN_TX_QBASE_VFFIRSTQ_M) | + (((max_txq - 1) << VPLAN_TX_QBASE_VFNUMQ_S) & + VPLAN_TX_QBASE_VFNUMQ_M)); + wr32(hw, VPLAN_TX_QBASE(vf->vf_id), reg); + } else { + dev_err(dev, "Scattered mode for VF Tx queues is not yet implemented\n"); + } + + /* set regardless of mapping mode */ + wr32(hw, VPLAN_RXQ_MAPENA(vf->vf_id), VPLAN_RXQ_MAPENA_RX_ENA_M); + + /* VF Rx queues allocation */ + if (vsi->rx_mapping_mode == ICE_VSI_MAP_CONTIG) { + /* set the VF PF Rx queue range + * VFNUMQ value should be set to (number of queues - 1). A value + * of 0 means 1 queue and a value of 255 means 256 queues + */ + reg = (((vsi->rxq_map[0] << VPLAN_RX_QBASE_VFFIRSTQ_S) & + VPLAN_RX_QBASE_VFFIRSTQ_M) | + (((max_rxq - 1) << VPLAN_RX_QBASE_VFNUMQ_S) & + VPLAN_RX_QBASE_VFNUMQ_M)); + wr32(hw, VPLAN_RX_QBASE(vf->vf_id), reg); + } else { + dev_err(dev, "Scattered mode for VF Rx queues is not yet implemented\n"); + } +} + +/** + * ice_ena_vf_mappings - enable VF MSIX and queue mapping + * @vf: pointer to the VF structure + */ +static void ice_ena_vf_mappings(struct ice_vf *vf) +{ + struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx]; + + ice_ena_vf_msix_mappings(vf); + ice_ena_vf_q_mappings(vf, vsi->alloc_txq, vsi->alloc_rxq); +} + +/** + * ice_determine_res + * @pf: pointer to the PF structure + * @avail_res: available resources in the PF structure + * @max_res: maximum resources that can be given per VF + * @min_res: minimum resources that can be given per VF + * + * Returns non-zero value if resources (queues/vectors) are available or + * returns zero if PF cannot accommodate for all num_alloc_vfs. + */ +static int +ice_determine_res(struct ice_pf *pf, u16 avail_res, u16 max_res, u16 min_res) +{ + bool checked_min_res = false; + int res; + + /* start by checking if PF can assign max number of resources for + * all num_alloc_vfs. + * if yes, return number per VF + * If no, divide by 2 and roundup, check again + * repeat the loop till we reach a point where even minimum resources + * are not available, in that case return 0 + */ + res = max_res; + while ((res >= min_res) && !checked_min_res) { + int num_all_res; + + num_all_res = pf->num_alloc_vfs * res; + if (num_all_res <= avail_res) + return res; + + if (res == min_res) + checked_min_res = true; + + res = DIV_ROUND_UP(res, 2); + } + return 0; +} + +/** + * ice_calc_vf_reg_idx - Calculate the VF's register index in the PF space + * @vf: VF to calculate the register index for + * @q_vector: a q_vector associated to the VF + */ +int ice_calc_vf_reg_idx(struct ice_vf *vf, struct ice_q_vector *q_vector) +{ + struct ice_pf *pf; + + if (!vf || !q_vector) + return -EINVAL; + + pf = vf->pf; + + /* always add one to account for the OICR being the first MSIX */ + return pf->sriov_base_vector + pf->num_msix_per_vf * vf->vf_id + + q_vector->v_idx + 1; +} + +/** + * ice_get_max_valid_res_idx - Get the max valid resource index + * @res: pointer to the resource to find the max valid index for + * + * Start from the end of the ice_res_tracker and return right when we find the + * first res->list entry with the ICE_RES_VALID_BIT set. This function is only + * valid for SR-IOV because it is the only consumer that manipulates the + * res->end and this is always called when res->end is set to res->num_entries. + */ +static int ice_get_max_valid_res_idx(struct ice_res_tracker *res) +{ + int i; + + if (!res) + return -EINVAL; + + for (i = res->num_entries - 1; i >= 0; i--) + if (res->list[i] & ICE_RES_VALID_BIT) + return i; + + return 0; +} + +/** + * ice_sriov_set_msix_res - Set any used MSIX resources + * @pf: pointer to PF structure + * @num_msix_needed: number of MSIX vectors needed for all SR-IOV VFs + * + * This function allows SR-IOV resources to be taken from the end of the PF's + * allowed HW MSIX vectors so that the irq_tracker will not be affected. We + * just set the pf->sriov_base_vector and return success. + * + * If there are not enough resources available, return an error. This should + * always be caught by ice_set_per_vf_res(). + * + * Return 0 on success, and -EINVAL when there are not enough MSIX vectors + * in the PF's space available for SR-IOV. + */ +static int ice_sriov_set_msix_res(struct ice_pf *pf, u16 num_msix_needed) +{ + u16 total_vectors = pf->hw.func_caps.common_cap.num_msix_vectors; + int vectors_used = pf->irq_tracker->num_entries; + int sriov_base_vector; + + sriov_base_vector = total_vectors - num_msix_needed; + + /* make sure we only grab irq_tracker entries from the list end and + * that we have enough available MSIX vectors + */ + if (sriov_base_vector < vectors_used) + return -EINVAL; + + pf->sriov_base_vector = sriov_base_vector; + + return 0; +} + +/** + * ice_set_per_vf_res - check if vectors and queues are available + * @pf: pointer to the PF structure + * + * First, determine HW interrupts from common pool. If we allocate fewer VFs, we + * get more vectors and can enable more queues per VF. Note that this does not + * grab any vectors from the SW pool already allocated. Also note, that all + * vector counts include one for each VF's miscellaneous interrupt vector + * (i.e. OICR). + * + * Minimum VFs - 2 vectors, 1 queue pair + * Small VFs - 5 vectors, 4 queue pairs + * Medium VFs - 17 vectors, 16 queue pairs + * + * Second, determine number of queue pairs per VF by starting with a pre-defined + * maximum each VF supports. If this is not possible, then we adjust based on + * queue pairs available on the device. + * + * Lastly, set queue and MSI-X VF variables tracked by the PF so it can be used + * by each VF during VF initialization and reset. + */ +static int ice_set_per_vf_res(struct ice_pf *pf) +{ + int max_valid_res_idx = ice_get_max_valid_res_idx(pf->irq_tracker); + int msix_avail_per_vf, msix_avail_for_sriov; + struct device *dev = ice_pf_to_dev(pf); + u16 num_msix_per_vf, num_txq, num_rxq; + + if (!pf->num_alloc_vfs || max_valid_res_idx < 0) + return -EINVAL; + + /* determine MSI-X resources per VF */ + msix_avail_for_sriov = pf->hw.func_caps.common_cap.num_msix_vectors - + pf->irq_tracker->num_entries; + msix_avail_per_vf = msix_avail_for_sriov / pf->num_alloc_vfs; + if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_MED) { + num_msix_per_vf = ICE_NUM_VF_MSIX_MED; + } else if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_SMALL) { + num_msix_per_vf = ICE_NUM_VF_MSIX_SMALL; + } else if (msix_avail_per_vf >= ICE_NUM_VF_MSIX_MULTIQ_MIN) { + num_msix_per_vf = ICE_NUM_VF_MSIX_MULTIQ_MIN; + } else if (msix_avail_per_vf >= ICE_MIN_INTR_PER_VF) { + num_msix_per_vf = ICE_MIN_INTR_PER_VF; + } else { + dev_err(dev, "Only %d MSI-X interrupts available for SR-IOV. Not enough to support minimum of %d MSI-X interrupts per VF for %d VFs\n", + msix_avail_for_sriov, ICE_MIN_INTR_PER_VF, + pf->num_alloc_vfs); + return -EIO; + } + + /* determine queue resources per VF */ + num_txq = ice_determine_res(pf, ice_get_avail_txq_count(pf), + min_t(u16, + num_msix_per_vf - ICE_NONQ_VECS_VF, + ICE_MAX_RSS_QS_PER_VF), + ICE_MIN_QS_PER_VF); + + num_rxq = ice_determine_res(pf, ice_get_avail_rxq_count(pf), + min_t(u16, + num_msix_per_vf - ICE_NONQ_VECS_VF, + ICE_MAX_RSS_QS_PER_VF), + ICE_MIN_QS_PER_VF); + + if (!num_txq || !num_rxq) { + dev_err(dev, "Not enough queues to support minimum of %d queue pairs per VF for %d VFs\n", + ICE_MIN_QS_PER_VF, pf->num_alloc_vfs); + return -EIO; + } + + if (ice_sriov_set_msix_res(pf, num_msix_per_vf * pf->num_alloc_vfs)) { + dev_err(dev, "Unable to set MSI-X resources for %d VFs\n", + pf->num_alloc_vfs); + return -EINVAL; + } + + /* only allow equal Tx/Rx queue count (i.e. queue pairs) */ + pf->num_qps_per_vf = min_t(int, num_txq, num_rxq); + pf->num_msix_per_vf = num_msix_per_vf; + dev_info(dev, "Enabling %d VFs with %d vectors and %d queues per VF\n", + pf->num_alloc_vfs, pf->num_msix_per_vf, pf->num_qps_per_vf); + + return 0; +} + +/** + * ice_clear_vf_reset_trigger - enable VF to access hardware + * @vf: VF to enabled hardware access for + */ +static void ice_clear_vf_reset_trigger(struct ice_vf *vf) +{ + struct ice_hw *hw = &vf->pf->hw; + u32 reg; + + reg = rd32(hw, VPGEN_VFRTRIG(vf->vf_id)); + reg &= ~VPGEN_VFRTRIG_VFSWR_M; + wr32(hw, VPGEN_VFRTRIG(vf->vf_id), reg); + ice_flush(hw); +} + +/** + * ice_vf_set_vsi_promisc - set given VF VSI to given promiscuous mode(s) + * @vf: pointer to the VF info + * @vsi: the VSI being configured + * @promisc_m: mask of promiscuous config bits + * @rm_promisc: promisc flag request from the VF to remove or add filter + * + * This function configures VF VSI promiscuous mode, based on the VF requests, + * for Unicast, Multicast and VLAN + */ +static enum ice_status +ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m, + bool rm_promisc) +{ + struct ice_pf *pf = vf->pf; + enum ice_status status = 0; + struct ice_hw *hw; + + hw = &pf->hw; + if (vsi->num_vlan) { + status = ice_set_vlan_vsi_promisc(hw, vsi->idx, promisc_m, + rm_promisc); + } else if (vf->port_vlan_info) { + if (rm_promisc) + status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m, + vf->port_vlan_info); + else + status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m, + vf->port_vlan_info); + } else { + if (rm_promisc) + status = ice_clear_vsi_promisc(hw, vsi->idx, promisc_m, + 0); + else + status = ice_set_vsi_promisc(hw, vsi->idx, promisc_m, + 0); + } + + return status; +} + +static void ice_vf_clear_counters(struct ice_vf *vf) +{ + struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx]; + + vf->num_mac = 0; + vsi->num_vlan = 0; + memset(&vf->mdd_tx_events, 0, sizeof(vf->mdd_tx_events)); + memset(&vf->mdd_rx_events, 0, sizeof(vf->mdd_rx_events)); +} + +/** + * ice_vf_pre_vsi_rebuild - tasks to be done prior to VSI rebuild + * @vf: VF to perform pre VSI rebuild tasks + * + * These tasks are items that don't need to be amortized since they are most + * likely called in a for loop with all VF(s) in the reset_all_vfs() case. + */ +static void ice_vf_pre_vsi_rebuild(struct ice_vf *vf) +{ + ice_vf_clear_counters(vf); + ice_clear_vf_reset_trigger(vf); +} + +/** + * ice_vf_rebuild_host_cfg - host admin configuration is persistent across reset + * @vf: VF to rebuild host configuration on + */ +static void ice_vf_rebuild_host_cfg(struct ice_vf *vf) +{ + struct device *dev = ice_pf_to_dev(vf->pf); + + ice_vf_set_host_trust_cfg(vf); + + if (ice_vf_rebuild_host_mac_cfg(vf)) + dev_err(dev, "failed to rebuild default MAC configuration for VF %d\n", + vf->vf_id); + + if (ice_vf_rebuild_host_vlan_cfg(vf)) + dev_err(dev, "failed to rebuild VLAN configuration for VF %u\n", + vf->vf_id); +} + +/** + * ice_vf_rebuild_vsi_with_release - release and setup the VF's VSI + * @vf: VF to release and setup the VSI for + * + * This is only called when a single VF is being reset (i.e. VFR, VFLR, host VF + * configuration change, etc.). + */ +static int ice_vf_rebuild_vsi_with_release(struct ice_vf *vf) +{ + ice_vf_vsi_release(vf); + if (!ice_vf_vsi_setup(vf)) + return -ENOMEM; + + return 0; +} + +/** + * ice_vf_rebuild_vsi - rebuild the VF's VSI + * @vf: VF to rebuild the VSI for + * + * This is only called when all VF(s) are being reset (i.e. PCIe Reset on the + * host, PFR, CORER, etc.). + */ +static int ice_vf_rebuild_vsi(struct ice_vf *vf) +{ + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + + vsi = pf->vsi[vf->lan_vsi_idx]; + + if (ice_vsi_rebuild(vsi, true)) { + dev_err(ice_pf_to_dev(pf), "failed to rebuild VF %d VSI\n", + vf->vf_id); + return -EIO; + } + /* vsi->idx will remain the same in this case so don't update + * vf->lan_vsi_idx + */ + vsi->vsi_num = ice_get_hw_vsi_num(&pf->hw, vsi->idx); + vf->lan_vsi_num = vsi->vsi_num; + + return 0; +} + +/** + * ice_vf_set_initialized - VF is ready for VIRTCHNL communication + * @vf: VF to set in initialized state + * + * After this function the VF will be ready to receive/handle the + * VIRTCHNL_OP_GET_VF_RESOURCES message + */ +static void ice_vf_set_initialized(struct ice_vf *vf) +{ + ice_set_vf_state_qs_dis(vf); + clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states); + clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states); + clear_bit(ICE_VF_STATE_DIS, vf->vf_states); + set_bit(ICE_VF_STATE_INIT, vf->vf_states); +} + +/** + * ice_vf_post_vsi_rebuild - tasks to do after the VF's VSI have been rebuilt + * @vf: VF to perform tasks on + */ +static void ice_vf_post_vsi_rebuild(struct ice_vf *vf) +{ + struct ice_pf *pf = vf->pf; + struct ice_hw *hw; + + hw = &pf->hw; + + ice_vf_rebuild_host_cfg(vf); + + ice_vf_set_initialized(vf); + ice_ena_vf_mappings(vf); + wr32(hw, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_VFACTIVE); +} + +/** + * ice_reset_all_vfs - reset all allocated VFs in one go + * @pf: pointer to the PF structure + * @is_vflr: true if VFLR was issued, false if not + * + * First, tell the hardware to reset each VF, then do all the waiting in one + * chunk, and finally finish restoring each VF after the wait. This is useful + * during PF routines which need to reset all VFs, as otherwise it must perform + * these resets in a serialized fashion. + * + * Returns true if any VFs were reset, and false otherwise. + */ +bool ice_reset_all_vfs(struct ice_pf *pf, bool is_vflr) +{ + struct device *dev = ice_pf_to_dev(pf); + struct ice_hw *hw = &pf->hw; + struct ice_vf *vf; + int v, i; + + /* If we don't have any VFs, then there is nothing to reset */ + if (!pf->num_alloc_vfs) + return false; + + /* If VFs have been disabled, there is no need to reset */ + if (test_and_set_bit(__ICE_VF_DIS, pf->state)) + return false; + + /* Begin reset on all VFs at once */ + ice_for_each_vf(pf, v) + ice_trigger_vf_reset(&pf->vf[v], is_vflr, true); + + /* HW requires some time to make sure it can flush the FIFO for a VF + * when it resets it. Poll the VPGEN_VFRSTAT register for each VF in + * sequence to make sure that it has completed. We'll keep track of + * the VFs using a simple iterator that increments once that VF has + * finished resetting. + */ + for (i = 0, v = 0; i < 10 && v < pf->num_alloc_vfs; i++) { + /* Check each VF in sequence */ + while (v < pf->num_alloc_vfs) { + u32 reg; + + vf = &pf->vf[v]; + reg = rd32(hw, VPGEN_VFRSTAT(vf->vf_id)); + if (!(reg & VPGEN_VFRSTAT_VFRD_M)) { + /* only delay if the check failed */ + usleep_range(10, 20); + break; + } + + /* If the current VF has finished resetting, move on + * to the next VF in sequence. + */ + v++; + } + } + + /* Display a warning if at least one VF didn't manage to reset in + * time, but continue on with the operation. + */ + if (v < pf->num_alloc_vfs) + dev_warn(dev, "VF reset check timeout\n"); + + /* free VF resources to begin resetting the VSI state */ + ice_for_each_vf(pf, v) { + vf = &pf->vf[v]; + + mutex_lock(&vf->cfg_lock); + + ice_vf_pre_vsi_rebuild(vf); + ice_vf_rebuild_vsi(vf); + ice_vf_post_vsi_rebuild(vf); + + mutex_unlock(&vf->cfg_lock); + } + + ice_flush(hw); + clear_bit(__ICE_VF_DIS, pf->state); + + return true; +} + +/** + * ice_is_vf_disabled + * @vf: pointer to the VF info + * + * Returns true if the PF or VF is disabled, false otherwise. + */ +static bool ice_is_vf_disabled(struct ice_vf *vf) +{ + struct ice_pf *pf = vf->pf; + + /* If the PF has been disabled, there is no need resetting VF until + * PF is active again. Similarly, if the VF has been disabled, this + * means something else is resetting the VF, so we shouldn't continue. + * Otherwise, set disable VF state bit for actual reset, and continue. + */ + return (test_bit(__ICE_VF_DIS, pf->state) || + test_bit(ICE_VF_STATE_DIS, vf->vf_states)); +} + +/** + * ice_reset_vf - Reset a particular VF + * @vf: pointer to the VF structure + * @is_vflr: true if VFLR was issued, false if not + * + * Returns true if the VF is currently in reset, resets successfully, or resets + * are disabled and false otherwise. + */ +bool ice_reset_vf(struct ice_vf *vf, bool is_vflr) +{ + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + struct device *dev; + struct ice_hw *hw; + bool rsd = false; + u8 promisc_m; + u32 reg; + int i; + + lockdep_assert_held(&vf->cfg_lock); + + dev = ice_pf_to_dev(pf); + + if (test_bit(__ICE_VF_RESETS_DISABLED, pf->state)) { + dev_dbg(dev, "Trying to reset VF %d, but all VF resets are disabled\n", + vf->vf_id); + return true; + } + + if (ice_is_vf_disabled(vf)) { + dev_dbg(dev, "VF is already disabled, there is no need for resetting it, telling VM, all is fine %d\n", + vf->vf_id); + return true; + } + + /* Set VF disable bit state here, before triggering reset */ + set_bit(ICE_VF_STATE_DIS, vf->vf_states); + ice_trigger_vf_reset(vf, is_vflr, false); + + vsi = pf->vsi[vf->lan_vsi_idx]; + + ice_dis_vf_qs(vf); + + /* Call Disable LAN Tx queue AQ whether or not queues are + * enabled. This is needed for successful completion of VFR. + */ + ice_dis_vsi_txq(vsi->port_info, vsi->idx, 0, 0, NULL, NULL, + NULL, ICE_VF_RESET, vf->vf_id, NULL); + + hw = &pf->hw; + /* poll VPGEN_VFRSTAT reg to make sure + * that reset is complete + */ + for (i = 0; i < 10; i++) { + /* VF reset requires driver to first reset the VF and then + * poll the status register to make sure that the reset + * completed successfully. + */ + reg = rd32(hw, VPGEN_VFRSTAT(vf->vf_id)); + if (reg & VPGEN_VFRSTAT_VFRD_M) { + rsd = true; + break; + } + + /* only sleep if the reset is not done */ + usleep_range(10, 20); + } + + /* Display a warning if VF didn't manage to reset in time, but need to + * continue on with the operation. + */ + if (!rsd) + dev_warn(dev, "VF reset check timeout on VF %d\n", vf->vf_id); + + /* disable promiscuous modes in case they were enabled + * ignore any error if disabling process failed + */ + if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) || + test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states)) { + if (vf->port_vlan_info || vsi->num_vlan) + promisc_m = ICE_UCAST_VLAN_PROMISC_BITS; + else + promisc_m = ICE_UCAST_PROMISC_BITS; + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (ice_vf_set_vsi_promisc(vf, vsi, promisc_m, true)) + dev_err(dev, "disabling promiscuous mode failed\n"); + } + + ice_vf_pre_vsi_rebuild(vf); + + if (ice_vf_rebuild_vsi_with_release(vf)) { + dev_err(dev, "Failed to release and setup the VF%u's VSI\n", vf->vf_id); + return false; + } + + ice_vf_post_vsi_rebuild(vf); + + return true; +} + +/** + * ice_vc_notify_link_state - Inform all VFs on a PF of link status + * @pf: pointer to the PF structure + */ +void ice_vc_notify_link_state(struct ice_pf *pf) +{ + int i; + + ice_for_each_vf(pf, i) + ice_vc_notify_vf_link_state(&pf->vf[i]); +} + +/** + * ice_vc_notify_reset - Send pending reset message to all VFs + * @pf: pointer to the PF structure + * + * indicate a pending reset to all VFs on a given PF + */ +void ice_vc_notify_reset(struct ice_pf *pf) +{ + struct virtchnl_pf_event pfe; + + if (!pf->num_alloc_vfs) + return; + + pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING; + pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM; + ice_vc_vf_broadcast(pf, VIRTCHNL_OP_EVENT, VIRTCHNL_STATUS_SUCCESS, + (u8 *)&pfe, sizeof(struct virtchnl_pf_event)); +} + +/** + * ice_vc_notify_vf_reset - Notify VF of a reset event + * @vf: pointer to the VF structure + */ +static void ice_vc_notify_vf_reset(struct ice_vf *vf) +{ + struct virtchnl_pf_event pfe; + struct ice_pf *pf; + + if (!vf) + return; + + pf = vf->pf; + if (ice_validate_vf_id(pf, vf->vf_id)) + return; + + /* Bail out if VF is in disabled state, neither initialized, nor active + * state - otherwise proceed with notifications + */ + if ((!test_bit(ICE_VF_STATE_INIT, vf->vf_states) && + !test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) || + test_bit(ICE_VF_STATE_DIS, vf->vf_states)) + return; + + pfe.event = VIRTCHNL_EVENT_RESET_IMPENDING; + pfe.severity = PF_EVENT_SEVERITY_CERTAIN_DOOM; + ice_aq_send_msg_to_vf(&pf->hw, vf->vf_id, VIRTCHNL_OP_EVENT, + VIRTCHNL_STATUS_SUCCESS, (u8 *)&pfe, sizeof(pfe), + NULL); +} + +/** + * ice_init_vf_vsi_res - initialize/setup VF VSI resources + * @vf: VF to initialize/setup the VSI for + * + * This function creates a VSI for the VF, adds a VLAN 0 filter, and sets up the + * VF VSI's broadcast filter and is only used during initial VF creation. + */ +static int ice_init_vf_vsi_res(struct ice_vf *vf) +{ + struct ice_pf *pf = vf->pf; + u8 broadcast[ETH_ALEN]; + enum ice_status status; + struct ice_vsi *vsi; + struct device *dev; + int err; + + vf->first_vector_idx = ice_calc_vf_first_vector_idx(pf, vf); + + dev = ice_pf_to_dev(pf); + vsi = ice_vf_vsi_setup(vf); + if (!vsi) + return -ENOMEM; + + err = ice_vsi_add_vlan(vsi, 0, ICE_FWD_TO_VSI); + if (err) { + dev_warn(dev, "Failed to add VLAN 0 filter for VF %d\n", + vf->vf_id); + goto release_vsi; + } + + eth_broadcast_addr(broadcast); + status = ice_fltr_add_mac(vsi, broadcast, ICE_FWD_TO_VSI); + if (status) { + dev_err(dev, "Failed to add broadcast MAC filter for VF %d, status %s\n", + vf->vf_id, ice_stat_str(status)); + err = ice_status_to_errno(status); + goto release_vsi; + } + + vf->num_mac = 1; + + return 0; + +release_vsi: + ice_vf_vsi_release(vf); + return err; +} + +/** + * ice_start_vfs - start VFs so they are ready to be used by SR-IOV + * @pf: PF the VFs are associated with + */ +static int ice_start_vfs(struct ice_pf *pf) +{ + struct ice_hw *hw = &pf->hw; + int retval, i; + + ice_for_each_vf(pf, i) { + struct ice_vf *vf = &pf->vf[i]; + + ice_clear_vf_reset_trigger(vf); + + retval = ice_init_vf_vsi_res(vf); + if (retval) { + dev_err(ice_pf_to_dev(pf), "Failed to initialize VSI resources for VF %d, error %d\n", + vf->vf_id, retval); + goto teardown; + } + + set_bit(ICE_VF_STATE_INIT, vf->vf_states); + ice_ena_vf_mappings(vf); + wr32(hw, VFGEN_RSTAT(vf->vf_id), VIRTCHNL_VFR_VFACTIVE); + } + + ice_flush(hw); + return 0; + +teardown: + for (i = i - 1; i >= 0; i--) { + struct ice_vf *vf = &pf->vf[i]; + + ice_dis_vf_mappings(vf); + ice_vf_vsi_release(vf); + } + + return retval; +} + +/** + * ice_set_dflt_settings - set VF defaults during initialization/creation + * @pf: PF holding reference to all VFs for default configuration + */ +static void ice_set_dflt_settings_vfs(struct ice_pf *pf) +{ + int i; + + ice_for_each_vf(pf, i) { + struct ice_vf *vf = &pf->vf[i]; + + vf->pf = pf; + vf->vf_id = i; + vf->vf_sw_id = pf->first_sw; + /* assign default capabilities */ + set_bit(ICE_VIRTCHNL_VF_CAP_L2, &vf->vf_caps); + vf->spoofchk = true; + vf->num_vf_qs = pf->num_qps_per_vf; + + mutex_init(&vf->cfg_lock); + } +} + +/** + * ice_alloc_vfs - allocate num_vfs in the PF structure + * @pf: PF to store the allocated VFs in + * @num_vfs: number of VFs to allocate + */ +static int ice_alloc_vfs(struct ice_pf *pf, int num_vfs) +{ + struct ice_vf *vfs; + + vfs = devm_kcalloc(ice_pf_to_dev(pf), num_vfs, sizeof(*vfs), + GFP_KERNEL); + if (!vfs) + return -ENOMEM; + + pf->vf = vfs; + pf->num_alloc_vfs = num_vfs; + + return 0; +} + +/** + * ice_ena_vfs - enable VFs so they are ready to be used + * @pf: pointer to the PF structure + * @num_vfs: number of VFs to enable + */ +static int ice_ena_vfs(struct ice_pf *pf, u16 num_vfs) +{ + struct device *dev = ice_pf_to_dev(pf); + struct ice_hw *hw = &pf->hw; + int ret; + + /* Disable global interrupt 0 so we don't try to handle the VFLR. */ + wr32(hw, GLINT_DYN_CTL(pf->oicr_idx), + ICE_ITR_NONE << GLINT_DYN_CTL_ITR_INDX_S); + set_bit(__ICE_OICR_INTR_DIS, pf->state); + ice_flush(hw); + + ret = pci_enable_sriov(pf->pdev, num_vfs); + if (ret) { + pf->num_alloc_vfs = 0; + goto err_unroll_intr; + } + + ret = ice_alloc_vfs(pf, num_vfs); + if (ret) + goto err_pci_disable_sriov; + + if (ice_set_per_vf_res(pf)) { + dev_err(dev, "Not enough resources for %d VFs, try with fewer number of VFs\n", + num_vfs); + ret = -ENOSPC; + goto err_unroll_sriov; + } + + ice_set_dflt_settings_vfs(pf); + + if (ice_start_vfs(pf)) { + dev_err(dev, "Failed to start VF(s)\n"); + ret = -EAGAIN; + goto err_unroll_sriov; + } + + clear_bit(__ICE_VF_DIS, pf->state); + return 0; + +err_unroll_sriov: + devm_kfree(dev, pf->vf); + pf->vf = NULL; + pf->num_alloc_vfs = 0; +err_pci_disable_sriov: + pci_disable_sriov(pf->pdev); +err_unroll_intr: + /* rearm interrupts here */ + ice_irq_dynamic_ena(hw, NULL, NULL); + clear_bit(__ICE_OICR_INTR_DIS, pf->state); + return ret; +} + +/** + * ice_pci_sriov_ena - Enable or change number of VFs + * @pf: pointer to the PF structure + * @num_vfs: number of VFs to allocate + * + * Returns 0 on success and negative on failure + */ +static int ice_pci_sriov_ena(struct ice_pf *pf, int num_vfs) +{ + int pre_existing_vfs = pci_num_vf(pf->pdev); + struct device *dev = ice_pf_to_dev(pf); + int err; + + if (pre_existing_vfs && pre_existing_vfs != num_vfs) + ice_free_vfs(pf); + else if (pre_existing_vfs && pre_existing_vfs == num_vfs) + return 0; + + if (num_vfs > pf->num_vfs_supported) { + dev_err(dev, "Can't enable %d VFs, max VFs supported is %d\n", + num_vfs, pf->num_vfs_supported); + return -EOPNOTSUPP; + } + + dev_info(dev, "Enabling %d VFs\n", num_vfs); + err = ice_ena_vfs(pf, num_vfs); + if (err) { + dev_err(dev, "Failed to enable SR-IOV: %d\n", err); + return err; + } + + set_bit(ICE_FLAG_SRIOV_ENA, pf->flags); + return 0; +} + +/** + * ice_check_sriov_allowed - check if SR-IOV is allowed based on various checks + * @pf: PF to enabled SR-IOV on + */ +static int ice_check_sriov_allowed(struct ice_pf *pf) +{ + struct device *dev = ice_pf_to_dev(pf); + + if (!test_bit(ICE_FLAG_SRIOV_CAPABLE, pf->flags)) { + dev_err(dev, "This device is not capable of SR-IOV\n"); + return -EOPNOTSUPP; + } + + if (ice_is_safe_mode(pf)) { + dev_err(dev, "SR-IOV cannot be configured - Device is in Safe Mode\n"); + return -EOPNOTSUPP; + } + + if (!ice_pf_state_is_nominal(pf)) { + dev_err(dev, "Cannot enable SR-IOV, device not ready\n"); + return -EBUSY; + } + + return 0; +} + +/** + * ice_sriov_configure - Enable or change number of VFs via sysfs + * @pdev: pointer to a pci_dev structure + * @num_vfs: number of VFs to allocate or 0 to free VFs + * + * This function is called when the user updates the number of VFs in sysfs. On + * success return whatever num_vfs was set to by the caller. Return negative on + * failure. + */ +int ice_sriov_configure(struct pci_dev *pdev, int num_vfs) +{ + struct ice_pf *pf = pci_get_drvdata(pdev); + struct device *dev = ice_pf_to_dev(pf); + int err; + + err = ice_check_sriov_allowed(pf); + if (err) + return err; + + if (!num_vfs) { + if (!pci_vfs_assigned(pdev)) { + ice_free_vfs(pf); + return 0; + } + + dev_err(dev, "can't free VFs because some are assigned to VMs.\n"); + return -EBUSY; + } + + err = ice_pci_sriov_ena(pf, num_vfs); + if (err) + return err; + + return num_vfs; +} + +/** + * ice_process_vflr_event - Free VF resources via IRQ calls + * @pf: pointer to the PF structure + * + * called from the VFLR IRQ handler to + * free up VF resources and state variables + */ +void ice_process_vflr_event(struct ice_pf *pf) +{ + struct ice_hw *hw = &pf->hw; + unsigned int vf_id; + u32 reg; + + if (!test_and_clear_bit(__ICE_VFLR_EVENT_PENDING, pf->state) || + !pf->num_alloc_vfs) + return; + + ice_for_each_vf(pf, vf_id) { + struct ice_vf *vf = &pf->vf[vf_id]; + u32 reg_idx, bit_idx; + + reg_idx = (hw->func_caps.vf_base_id + vf_id) / 32; + bit_idx = (hw->func_caps.vf_base_id + vf_id) % 32; + /* read GLGEN_VFLRSTAT register to find out the flr VFs */ + reg = rd32(hw, GLGEN_VFLRSTAT(reg_idx)); + if (reg & BIT(bit_idx)) { + /* GLGEN_VFLRSTAT bit will be cleared in ice_reset_vf */ + mutex_lock(&vf->cfg_lock); + ice_reset_vf(vf, true); + mutex_unlock(&vf->cfg_lock); + } + } +} + +/** + * ice_vc_reset_vf - Perform software reset on the VF after informing the AVF + * @vf: pointer to the VF info + */ +static void ice_vc_reset_vf(struct ice_vf *vf) +{ + ice_vc_notify_vf_reset(vf); + ice_reset_vf(vf, false); +} + +/** + * ice_get_vf_from_pfq - get the VF who owns the PF space queue passed in + * @pf: PF used to index all VFs + * @pfq: queue index relative to the PF's function space + * + * If no VF is found who owns the pfq then return NULL, otherwise return a + * pointer to the VF who owns the pfq + */ +static struct ice_vf *ice_get_vf_from_pfq(struct ice_pf *pf, u16 pfq) +{ + unsigned int vf_id; + + ice_for_each_vf(pf, vf_id) { + struct ice_vf *vf = &pf->vf[vf_id]; + struct ice_vsi *vsi; + u16 rxq_idx; + + vsi = pf->vsi[vf->lan_vsi_idx]; + + ice_for_each_rxq(vsi, rxq_idx) + if (vsi->rxq_map[rxq_idx] == pfq) + return vf; + } + + return NULL; +} + +/** + * ice_globalq_to_pfq - convert from global queue index to PF space queue index + * @pf: PF used for conversion + * @globalq: global queue index used to convert to PF space queue index + */ +static u32 ice_globalq_to_pfq(struct ice_pf *pf, u32 globalq) +{ + return globalq - pf->hw.func_caps.common_cap.rxq_first_id; +} + +/** + * ice_vf_lan_overflow_event - handle LAN overflow event for a VF + * @pf: PF that the LAN overflow event happened on + * @event: structure holding the event information for the LAN overflow event + * + * Determine if the LAN overflow event was caused by a VF queue. If it was not + * caused by a VF, do nothing. If a VF caused this LAN overflow event trigger a + * reset on the offending VF. + */ +void +ice_vf_lan_overflow_event(struct ice_pf *pf, struct ice_rq_event_info *event) +{ + u32 gldcb_rtctq, queue; + struct ice_vf *vf; + + gldcb_rtctq = le32_to_cpu(event->desc.params.lan_overflow.prtdcb_ruptq); + dev_dbg(ice_pf_to_dev(pf), "GLDCB_RTCTQ: 0x%08x\n", gldcb_rtctq); + + /* event returns device global Rx queue number */ + queue = (gldcb_rtctq & GLDCB_RTCTQ_RXQNUM_M) >> + GLDCB_RTCTQ_RXQNUM_S; + + vf = ice_get_vf_from_pfq(pf, ice_globalq_to_pfq(pf, queue)); + if (!vf) + return; + + mutex_lock(&vf->cfg_lock); + ice_vc_reset_vf(vf); + mutex_unlock(&vf->cfg_lock); +} + +/** + * ice_vc_send_msg_to_vf - Send message to VF + * @vf: pointer to the VF info + * @v_opcode: virtual channel opcode + * @v_retval: virtual channel return value + * @msg: pointer to the msg buffer + * @msglen: msg length + * + * send msg to VF + */ +static int +ice_vc_send_msg_to_vf(struct ice_vf *vf, u32 v_opcode, + enum virtchnl_status_code v_retval, u8 *msg, u16 msglen) +{ + enum ice_status aq_ret; + struct device *dev; + struct ice_pf *pf; + + if (!vf) + return -EINVAL; + + pf = vf->pf; + if (ice_validate_vf_id(pf, vf->vf_id)) + return -EINVAL; + + dev = ice_pf_to_dev(pf); + + aq_ret = ice_aq_send_msg_to_vf(&pf->hw, vf->vf_id, v_opcode, v_retval, + msg, msglen, NULL); + if (aq_ret && pf->hw.mailboxq.sq_last_status != ICE_AQ_RC_ENOSYS) { + dev_info(dev, "Unable to send the message to VF %d ret %s aq_err %s\n", + vf->vf_id, ice_stat_str(aq_ret), + ice_aq_str(pf->hw.mailboxq.sq_last_status)); + return -EIO; + } + + return 0; +} + +/** + * ice_vc_get_ver_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * called from the VF to request the API version used by the PF + */ +static int ice_vc_get_ver_msg(struct ice_vf *vf, u8 *msg) +{ + struct virtchnl_version_info info = { + VIRTCHNL_VERSION_MAJOR, VIRTCHNL_VERSION_MINOR + }; + + vf->vf_ver = *(struct virtchnl_version_info *)msg; + /* VFs running the 1.0 API expect to get 1.0 back or they will cry. */ + if (VF_IS_V10(&vf->vf_ver)) + info.minor = VIRTCHNL_VERSION_MINOR_NO_VF_CAPS; + + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_VERSION, + VIRTCHNL_STATUS_SUCCESS, (u8 *)&info, + sizeof(struct virtchnl_version_info)); +} + +/** + * ice_vc_get_max_frame_size - get max frame size allowed for VF + * @vf: VF used to determine max frame size + * + * Max frame size is determined based on the current port's max frame size and + * whether a port VLAN is configured on this VF. The VF is not aware whether + * it's in a port VLAN so the PF needs to account for this in max frame size + * checks and sending the max frame size to the VF. + */ +static u16 ice_vc_get_max_frame_size(struct ice_vf *vf) +{ + struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx]; + struct ice_port_info *pi = vsi->port_info; + u16 max_frame_size; + + max_frame_size = pi->phy.link_info.max_frame_size; + + if (vf->port_vlan_info) + max_frame_size -= VLAN_HLEN; + + return max_frame_size; +} + +/** + * ice_vc_get_vf_res_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * called from the VF to request its resources + */ +static int ice_vc_get_vf_res_msg(struct ice_vf *vf, u8 *msg) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct virtchnl_vf_resource *vfres = NULL; + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + int len = 0; + int ret; + + if (ice_check_vf_init(pf, vf)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto err; + } + + len = sizeof(struct virtchnl_vf_resource); + + vfres = kzalloc(len, GFP_KERNEL); + if (!vfres) { + v_ret = VIRTCHNL_STATUS_ERR_NO_MEMORY; + len = 0; + goto err; + } + if (VF_IS_V11(&vf->vf_ver)) + vf->driver_caps = *(u32 *)msg; + else + vf->driver_caps = VIRTCHNL_VF_OFFLOAD_L2 | + VIRTCHNL_VF_OFFLOAD_RSS_REG | + VIRTCHNL_VF_OFFLOAD_VLAN; + + vfres->vf_cap_flags = VIRTCHNL_VF_OFFLOAD_L2; + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto err; + } + + if (!vsi->info.pvid) + vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_VLAN; + + if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PF) { + vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PF; + } else { + if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_AQ) + vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_AQ; + else + vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_REG; + } + + if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2) + vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RSS_PCTYPE_V2; + + if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP) + vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP; + + if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM) + vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_ENCAP_CSUM; + + if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_RX_POLLING) + vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_RX_POLLING; + + if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_WB_ON_ITR) + vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_WB_ON_ITR; + + if (vf->driver_caps & VIRTCHNL_VF_OFFLOAD_REQ_QUEUES) + vfres->vf_cap_flags |= VIRTCHNL_VF_OFFLOAD_REQ_QUEUES; + + if (vf->driver_caps & VIRTCHNL_VF_CAP_ADV_LINK_SPEED) + vfres->vf_cap_flags |= VIRTCHNL_VF_CAP_ADV_LINK_SPEED; + + vfres->num_vsis = 1; + /* Tx and Rx queue are equal for VF */ + vfres->num_queue_pairs = vsi->num_txq; + vfres->max_vectors = pf->num_msix_per_vf; + vfres->rss_key_size = ICE_VSIQF_HKEY_ARRAY_SIZE; + vfres->rss_lut_size = ICE_VSIQF_HLUT_ARRAY_SIZE; + vfres->max_mtu = ice_vc_get_max_frame_size(vf); + + vfres->vsi_res[0].vsi_id = vf->lan_vsi_num; + vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV; + vfres->vsi_res[0].num_queue_pairs = vsi->num_txq; + ether_addr_copy(vfres->vsi_res[0].default_mac_addr, + vf->dflt_lan_addr.addr); + + /* match guest capabilities */ + vf->driver_caps = vfres->vf_cap_flags; + + set_bit(ICE_VF_STATE_ACTIVE, vf->vf_states); + +err: + /* send the response back to the VF */ + ret = ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_VF_RESOURCES, v_ret, + (u8 *)vfres, len); + + kfree(vfres); + return ret; +} + +/** + * ice_vc_reset_vf_msg + * @vf: pointer to the VF info + * + * called from the VF to reset itself, + * unlike other virtchnl messages, PF driver + * doesn't send the response back to the VF + */ +static void ice_vc_reset_vf_msg(struct ice_vf *vf) +{ + if (test_bit(ICE_VF_STATE_INIT, vf->vf_states)) + ice_reset_vf(vf, false); +} + +/** + * ice_find_vsi_from_id + * @pf: the PF structure to search for the VSI + * @id: ID of the VSI it is searching for + * + * searches for the VSI with the given ID + */ +static struct ice_vsi *ice_find_vsi_from_id(struct ice_pf *pf, u16 id) +{ + int i; + + ice_for_each_vsi(pf, i) + if (pf->vsi[i] && pf->vsi[i]->vsi_num == id) + return pf->vsi[i]; + + return NULL; +} + +/** + * ice_vc_isvalid_vsi_id + * @vf: pointer to the VF info + * @vsi_id: VF relative VSI ID + * + * check for the valid VSI ID + */ +static bool ice_vc_isvalid_vsi_id(struct ice_vf *vf, u16 vsi_id) +{ + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + + vsi = ice_find_vsi_from_id(pf, vsi_id); + + return (vsi && (vsi->vf_id == vf->vf_id)); +} + +/** + * ice_vc_isvalid_q_id + * @vf: pointer to the VF info + * @vsi_id: VSI ID + * @qid: VSI relative queue ID + * + * check for the valid queue ID + */ +static bool ice_vc_isvalid_q_id(struct ice_vf *vf, u16 vsi_id, u8 qid) +{ + struct ice_vsi *vsi = ice_find_vsi_from_id(vf->pf, vsi_id); + /* allocated Tx and Rx queues should be always equal for VF VSI */ + return (vsi && (qid < vsi->alloc_txq)); +} + +/** + * ice_vc_isvalid_ring_len + * @ring_len: length of ring + * + * check for the valid ring count, should be multiple of ICE_REQ_DESC_MULTIPLE + * or zero + */ +static bool ice_vc_isvalid_ring_len(u16 ring_len) +{ + return ring_len == 0 || + (ring_len >= ICE_MIN_NUM_DESC && + ring_len <= ICE_MAX_NUM_DESC && + !(ring_len % ICE_REQ_DESC_MULTIPLE)); +} + +/** + * ice_vc_config_rss_key + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * Configure the VF's RSS key + */ +static int ice_vc_config_rss_key(struct ice_vf *vf, u8 *msg) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct virtchnl_rss_key *vrk = + (struct virtchnl_rss_key *)msg; + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vc_isvalid_vsi_id(vf, vrk->vsi_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (vrk->key_len != ICE_VSIQF_HKEY_ARRAY_SIZE) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (ice_set_rss(vsi, vrk->key, NULL, 0)) + v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR; +error_param: + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_KEY, v_ret, + NULL, 0); +} + +/** + * ice_vc_config_rss_lut + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * Configure the VF's RSS LUT + */ +static int ice_vc_config_rss_lut(struct ice_vf *vf, u8 *msg) +{ + struct virtchnl_rss_lut *vrl = (struct virtchnl_rss_lut *)msg; + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vc_isvalid_vsi_id(vf, vrl->vsi_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (vrl->lut_entries != ICE_VSIQF_HLUT_ARRAY_SIZE) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!test_bit(ICE_FLAG_RSS_ENA, vf->pf->flags)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (ice_set_rss(vsi, NULL, vrl->lut, ICE_VSIQF_HLUT_ARRAY_SIZE)) + v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR; +error_param: + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_RSS_LUT, v_ret, + NULL, 0); +} + +/** + * ice_wait_on_vf_reset - poll to make sure a given VF is ready after reset + * @vf: The VF being resseting + * + * The max poll time is about ~800ms, which is about the maximum time it takes + * for a VF to be reset and/or a VF driver to be removed. + */ +static void ice_wait_on_vf_reset(struct ice_vf *vf) +{ + int i; + + for (i = 0; i < ICE_MAX_VF_RESET_TRIES; i++) { + if (test_bit(ICE_VF_STATE_INIT, vf->vf_states)) + break; + msleep(ICE_MAX_VF_RESET_SLEEP_MS); + } +} + +/** + * ice_check_vf_ready_for_cfg - check if VF is ready to be configured/queried + * @vf: VF to check if it's ready to be configured/queried + * + * The purpose of this function is to make sure the VF is not in reset, not + * disabled, and initialized so it can be configured and/or queried by a host + * administrator. + */ +static int ice_check_vf_ready_for_cfg(struct ice_vf *vf) +{ + struct ice_pf *pf; + + ice_wait_on_vf_reset(vf); + + if (ice_is_vf_disabled(vf)) + return -EINVAL; + + pf = vf->pf; + if (ice_check_vf_init(pf, vf)) + return -EBUSY; + + return 0; +} + +/** + * ice_set_vf_spoofchk + * @netdev: network interface device structure + * @vf_id: VF identifier + * @ena: flag to enable or disable feature + * + * Enable or disable VF spoof checking + */ +int ice_set_vf_spoofchk(struct net_device *netdev, int vf_id, bool ena) +{ + struct ice_netdev_priv *np = netdev_priv(netdev); + struct ice_pf *pf = np->vsi->back; + struct ice_vsi_ctx *ctx; + struct ice_vsi *vf_vsi; + enum ice_status status; + struct device *dev; + struct ice_vf *vf; + int ret; + + dev = ice_pf_to_dev(pf); + if (ice_validate_vf_id(pf, vf_id)) + return -EINVAL; + + vf = &pf->vf[vf_id]; + ret = ice_check_vf_ready_for_cfg(vf); + if (ret) + return ret; + + vf_vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vf_vsi) { + netdev_err(netdev, "VSI %d for VF %d is null\n", + vf->lan_vsi_idx, vf->vf_id); + return -EINVAL; + } + + if (vf_vsi->type != ICE_VSI_VF) { + netdev_err(netdev, "Type %d of VSI %d for VF %d is no ICE_VSI_VF\n", + vf_vsi->type, vf_vsi->vsi_num, vf->vf_id); + return -ENODEV; + } + + if (ena == vf->spoofchk) { + dev_dbg(dev, "VF spoofchk already %s\n", ena ? "ON" : "OFF"); + return 0; + } + + ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + if (!ctx) + return -ENOMEM; + + ctx->info.sec_flags = vf_vsi->info.sec_flags; + ctx->info.valid_sections = cpu_to_le16(ICE_AQ_VSI_PROP_SECURITY_VALID); + if (ena) { + ctx->info.sec_flags |= + ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF | + (ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA << + ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S); + } else { + ctx->info.sec_flags &= + ~(ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF | + (ICE_AQ_VSI_SEC_TX_VLAN_PRUNE_ENA << + ICE_AQ_VSI_SEC_TX_PRUNE_ENA_S)); + } + + status = ice_update_vsi(&pf->hw, vf_vsi->idx, ctx, NULL); + if (status) { + dev_err(dev, "Failed to %sable spoofchk on VF %d VSI %d\n error %s\n", + ena ? "en" : "dis", vf->vf_id, vf_vsi->vsi_num, + ice_stat_str(status)); + ret = -EIO; + goto out; + } + + /* only update spoofchk state and VSI context on success */ + vf_vsi->info.sec_flags = ctx->info.sec_flags; + vf->spoofchk = ena; + +out: + kfree(ctx); + return ret; +} + +/** + * ice_is_any_vf_in_promisc - check if any VF(s) are in promiscuous mode + * @pf: PF structure for accessing VF(s) + * + * Return false if no VF(s) are in unicast and/or multicast promiscuous mode, + * else return true + */ +bool ice_is_any_vf_in_promisc(struct ice_pf *pf) +{ + int vf_idx; + + ice_for_each_vf(pf, vf_idx) { + struct ice_vf *vf = &pf->vf[vf_idx]; + + /* found a VF that has promiscuous mode configured */ + if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) || + test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states)) + return true; + } + + return false; +} + +/** + * ice_vc_cfg_promiscuous_mode_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * called from the VF to configure VF VSIs promiscuous mode + */ +static int ice_vc_cfg_promiscuous_mode_msg(struct ice_vf *vf, u8 *msg) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct virtchnl_promisc_info *info = + (struct virtchnl_promisc_info *)msg; + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + struct device *dev; + bool rm_promisc; + int ret = 0; + + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vc_isvalid_vsi_id(vf, info->vsi_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + dev = ice_pf_to_dev(pf); + if (!test_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps)) { + dev_err(dev, "Unprivileged VF %d is attempting to configure promiscuous mode\n", + vf->vf_id); + /* Leave v_ret alone, lie to the VF on purpose. */ + goto error_param; + } + + rm_promisc = !(info->flags & FLAG_VF_UNICAST_PROMISC) && + !(info->flags & FLAG_VF_MULTICAST_PROMISC); + + if (vsi->num_vlan || vf->port_vlan_info) { + struct ice_vsi *pf_vsi = ice_get_main_vsi(pf); + struct net_device *pf_netdev; + + if (!pf_vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + pf_netdev = pf_vsi->netdev; + + ret = ice_set_vf_spoofchk(pf_netdev, vf->vf_id, rm_promisc); + if (ret) { + dev_err(dev, "Failed to update spoofchk to %s for VF %d VSI %d when setting promiscuous mode\n", + rm_promisc ? "ON" : "OFF", vf->vf_id, + vsi->vsi_num); + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + } + + ret = ice_cfg_vlan_pruning(vsi, true, !rm_promisc); + if (ret) { + dev_err(dev, "Failed to configure VLAN pruning in promiscuous mode\n"); + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + } + + if (!test_bit(ICE_FLAG_VF_TRUE_PROMISC_ENA, pf->flags)) { + bool set_dflt_vsi = !!(info->flags & FLAG_VF_UNICAST_PROMISC); + + if (set_dflt_vsi && !ice_is_dflt_vsi_in_use(pf->first_sw)) + /* only attempt to set the default forwarding VSI if + * it's not currently set + */ + ret = ice_set_dflt_vsi(pf->first_sw, vsi); + else if (!set_dflt_vsi && + ice_is_vsi_dflt_vsi(pf->first_sw, vsi)) + /* only attempt to free the default forwarding VSI if we + * are the owner + */ + ret = ice_clear_dflt_vsi(pf->first_sw); + + if (ret) { + dev_err(dev, "%sable VF %d as the default VSI failed, error %d\n", + set_dflt_vsi ? "en" : "dis", vf->vf_id, ret); + v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR; + goto error_param; + } + } else { + enum ice_status status; + u8 promisc_m; + + if (info->flags & FLAG_VF_UNICAST_PROMISC) { + if (vf->port_vlan_info || vsi->num_vlan) + promisc_m = ICE_UCAST_VLAN_PROMISC_BITS; + else + promisc_m = ICE_UCAST_PROMISC_BITS; + } else if (info->flags & FLAG_VF_MULTICAST_PROMISC) { + if (vf->port_vlan_info || vsi->num_vlan) + promisc_m = ICE_MCAST_VLAN_PROMISC_BITS; + else + promisc_m = ICE_MCAST_PROMISC_BITS; + } else { + if (vf->port_vlan_info || vsi->num_vlan) + promisc_m = ICE_UCAST_VLAN_PROMISC_BITS; + else + promisc_m = ICE_UCAST_PROMISC_BITS; + } + + /* Configure multicast/unicast with or without VLAN promiscuous + * mode + */ + status = ice_vf_set_vsi_promisc(vf, vsi, promisc_m, rm_promisc); + if (status) { + dev_err(dev, "%sable Tx/Rx filter promiscuous mode on VF-%d failed, error: %s\n", + rm_promisc ? "dis" : "en", vf->vf_id, + ice_stat_str(status)); + v_ret = ice_err_to_virt_err(status); + goto error_param; + } else { + dev_dbg(dev, "%sable Tx/Rx filter promiscuous mode on VF-%d succeeded\n", + rm_promisc ? "dis" : "en", vf->vf_id); + } + } + + if (info->flags & FLAG_VF_MULTICAST_PROMISC) + set_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states); + else + clear_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states); + + if (info->flags & FLAG_VF_UNICAST_PROMISC) + set_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states); + else + clear_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states); + +error_param: + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE, + v_ret, NULL, 0); +} + +/** + * ice_vc_get_stats_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * called from the VF to get VSI stats + */ +static int ice_vc_get_stats_msg(struct ice_vf *vf, u8 *msg) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct virtchnl_queue_select *vqs = + (struct virtchnl_queue_select *)msg; + struct ice_eth_stats stats = { 0 }; + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + ice_update_eth_stats(vsi); + + stats = vsi->eth_stats; + +error_param: + /* send the response to the VF */ + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_GET_STATS, v_ret, + (u8 *)&stats, sizeof(stats)); +} + +/** + * ice_vc_validate_vqs_bitmaps - validate Rx/Tx queue bitmaps from VIRTCHNL + * @vqs: virtchnl_queue_select structure containing bitmaps to validate + * + * Return true on successful validation, else false + */ +static bool ice_vc_validate_vqs_bitmaps(struct virtchnl_queue_select *vqs) +{ + if ((!vqs->rx_queues && !vqs->tx_queues) || + vqs->rx_queues >= BIT(ICE_MAX_RSS_QS_PER_VF) || + vqs->tx_queues >= BIT(ICE_MAX_RSS_QS_PER_VF)) + return false; + + return true; +} + +/** + * ice_vf_ena_txq_interrupt - enable Tx queue interrupt via QINT_TQCTL + * @vsi: VSI of the VF to configure + * @q_idx: VF queue index used to determine the queue in the PF's space + */ +static void ice_vf_ena_txq_interrupt(struct ice_vsi *vsi, u32 q_idx) +{ + struct ice_hw *hw = &vsi->back->hw; + u32 pfq = vsi->txq_map[q_idx]; + u32 reg; + + reg = rd32(hw, QINT_TQCTL(pfq)); + + /* MSI-X index 0 in the VF's space is always for the OICR, which means + * this is most likely a poll mode VF driver, so don't enable an + * interrupt that was never configured via VIRTCHNL_OP_CONFIG_IRQ_MAP + */ + if (!(reg & QINT_TQCTL_MSIX_INDX_M)) + return; + + wr32(hw, QINT_TQCTL(pfq), reg | QINT_TQCTL_CAUSE_ENA_M); +} + +/** + * ice_vf_ena_rxq_interrupt - enable Tx queue interrupt via QINT_RQCTL + * @vsi: VSI of the VF to configure + * @q_idx: VF queue index used to determine the queue in the PF's space + */ +static void ice_vf_ena_rxq_interrupt(struct ice_vsi *vsi, u32 q_idx) +{ + struct ice_hw *hw = &vsi->back->hw; + u32 pfq = vsi->rxq_map[q_idx]; + u32 reg; + + reg = rd32(hw, QINT_RQCTL(pfq)); + + /* MSI-X index 0 in the VF's space is always for the OICR, which means + * this is most likely a poll mode VF driver, so don't enable an + * interrupt that was never configured via VIRTCHNL_OP_CONFIG_IRQ_MAP + */ + if (!(reg & QINT_RQCTL_MSIX_INDX_M)) + return; + + wr32(hw, QINT_RQCTL(pfq), reg | QINT_RQCTL_CAUSE_ENA_M); +} + +/** + * ice_vc_ena_qs_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * called from the VF to enable all or specific queue(s) + */ +static int ice_vc_ena_qs_msg(struct ice_vf *vf, u8 *msg) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct virtchnl_queue_select *vqs = + (struct virtchnl_queue_select *)msg; + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + unsigned long q_map; + u16 vf_q_id; + + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vc_validate_vqs_bitmaps(vqs)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + /* 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 + */ + q_map = vqs->rx_queues; + for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) { + if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + /* Skip queue if enabled */ + if (test_bit(vf_q_id, vf->rxq_ena)) + continue; + + if (ice_vsi_ctrl_one_rx_ring(vsi, true, vf_q_id, true)) { + dev_err(ice_pf_to_dev(vsi->back), "Failed to enable Rx ring %d on VSI %d\n", + vf_q_id, vsi->vsi_num); + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + ice_vf_ena_rxq_interrupt(vsi, vf_q_id); + set_bit(vf_q_id, vf->rxq_ena); + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + q_map = vqs->tx_queues; + for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) { + if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + /* Skip queue if enabled */ + if (test_bit(vf_q_id, vf->txq_ena)) + continue; + + ice_vf_ena_txq_interrupt(vsi, vf_q_id); + set_bit(vf_q_id, vf->txq_ena); + } + + /* Set flag to indicate that queues are enabled */ + if (v_ret == VIRTCHNL_STATUS_SUCCESS) + set_bit(ICE_VF_STATE_QS_ENA, vf->vf_states); + +error_param: + /* send the response to the VF */ + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ENABLE_QUEUES, v_ret, + NULL, 0); +} + +/** + * ice_vc_dis_qs_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * called from the VF to disable all or specific + * queue(s) + */ +static int ice_vc_dis_qs_msg(struct ice_vf *vf, u8 *msg) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct virtchnl_queue_select *vqs = + (struct virtchnl_queue_select *)msg; + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + unsigned long q_map; + u16 vf_q_id; + + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) && + !test_bit(ICE_VF_STATE_QS_ENA, vf->vf_states)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vc_isvalid_vsi_id(vf, vqs->vsi_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vc_validate_vqs_bitmaps(vqs)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (vqs->tx_queues) { + q_map = vqs->tx_queues; + + for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) { + struct ice_ring *ring = vsi->tx_rings[vf_q_id]; + struct ice_txq_meta txq_meta = { 0 }; + + if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!test_bit(vf_q_id, vf->txq_ena)) + dev_dbg(ice_pf_to_dev(vsi->back), "Queue %u on VSI %u is not enabled, but stopping it anyway\n", + vf_q_id, vsi->vsi_num); + + ice_fill_txq_meta(vsi, ring, &txq_meta); + + if (ice_vsi_stop_tx_ring(vsi, ICE_NO_RESET, vf->vf_id, + ring, &txq_meta)) { + dev_err(ice_pf_to_dev(vsi->back), "Failed to stop Tx ring %d on VSI %d\n", + vf_q_id, vsi->vsi_num); + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + /* Clear enabled queues flag */ + clear_bit(vf_q_id, vf->txq_ena); + } + } + + q_map = vqs->rx_queues; + /* speed up Rx queue disable by batching them if possible */ + if (q_map && + bitmap_equal(&q_map, vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF)) { + if (ice_vsi_stop_all_rx_rings(vsi)) { + dev_err(ice_pf_to_dev(vsi->back), "Failed to stop all Rx rings on VSI %d\n", + vsi->vsi_num); + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + bitmap_zero(vf->rxq_ena, ICE_MAX_RSS_QS_PER_VF); + } else if (q_map) { + for_each_set_bit(vf_q_id, &q_map, ICE_MAX_RSS_QS_PER_VF) { + if (!ice_vc_isvalid_q_id(vf, vqs->vsi_id, vf_q_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + /* Skip queue if not enabled */ + if (!test_bit(vf_q_id, vf->rxq_ena)) + continue; + + if (ice_vsi_ctrl_one_rx_ring(vsi, false, vf_q_id, + true)) { + dev_err(ice_pf_to_dev(vsi->back), "Failed to stop Rx ring %d on VSI %d\n", + vf_q_id, vsi->vsi_num); + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + /* Clear enabled queues flag */ + clear_bit(vf_q_id, vf->rxq_ena); + } + } + + /* Clear enabled queues flag */ + if (v_ret == VIRTCHNL_STATUS_SUCCESS && ice_vf_has_no_qs_ena(vf)) + clear_bit(ICE_VF_STATE_QS_ENA, vf->vf_states); + +error_param: + /* send the response to the VF */ + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DISABLE_QUEUES, v_ret, + NULL, 0); +} + +/** + * ice_cfg_interrupt + * @vf: pointer to the VF info + * @vsi: the VSI being configured + * @vector_id: vector ID + * @map: vector map for mapping vectors to queues + * @q_vector: structure for interrupt vector + * configure the IRQ to queue map + */ +static int +ice_cfg_interrupt(struct ice_vf *vf, struct ice_vsi *vsi, u16 vector_id, + struct virtchnl_vector_map *map, + struct ice_q_vector *q_vector) +{ + u16 vsi_q_id, vsi_q_id_idx; + unsigned long qmap; + + q_vector->num_ring_rx = 0; + q_vector->num_ring_tx = 0; + + qmap = map->rxq_map; + for_each_set_bit(vsi_q_id_idx, &qmap, ICE_MAX_RSS_QS_PER_VF) { + vsi_q_id = vsi_q_id_idx; + + if (!ice_vc_isvalid_q_id(vf, vsi->vsi_num, vsi_q_id)) + return VIRTCHNL_STATUS_ERR_PARAM; + + q_vector->num_ring_rx++; + q_vector->rx.itr_idx = map->rxitr_idx; + vsi->rx_rings[vsi_q_id]->q_vector = q_vector; + ice_cfg_rxq_interrupt(vsi, vsi_q_id, vector_id, + q_vector->rx.itr_idx); + } + + qmap = map->txq_map; + for_each_set_bit(vsi_q_id_idx, &qmap, ICE_MAX_RSS_QS_PER_VF) { + vsi_q_id = vsi_q_id_idx; + + if (!ice_vc_isvalid_q_id(vf, vsi->vsi_num, vsi_q_id)) + return VIRTCHNL_STATUS_ERR_PARAM; + + q_vector->num_ring_tx++; + q_vector->tx.itr_idx = map->txitr_idx; + vsi->tx_rings[vsi_q_id]->q_vector = q_vector; + ice_cfg_txq_interrupt(vsi, vsi_q_id, vector_id, + q_vector->tx.itr_idx); + } + + return VIRTCHNL_STATUS_SUCCESS; +} + +/** + * ice_vc_cfg_irq_map_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * called from the VF to configure the IRQ to queue map + */ +static int ice_vc_cfg_irq_map_msg(struct ice_vf *vf, u8 *msg) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + u16 num_q_vectors_mapped, vsi_id, vector_id; + struct virtchnl_irq_map_info *irqmap_info; + struct virtchnl_vector_map *map; + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + int i; + + irqmap_info = (struct virtchnl_irq_map_info *)msg; + num_q_vectors_mapped = irqmap_info->num_vectors; + + /* Check to make sure number of VF vectors mapped is not greater than + * number of VF vectors originally allocated, and check that + * there is actually at least a single VF queue vector mapped + */ + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) || + pf->num_msix_per_vf < num_q_vectors_mapped || + !num_q_vectors_mapped) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + for (i = 0; i < num_q_vectors_mapped; i++) { + struct ice_q_vector *q_vector; + + map = &irqmap_info->vecmap[i]; + + vector_id = map->vector_id; + vsi_id = map->vsi_id; + /* vector_id is always 0-based for each VF, and can never be + * larger than or equal to the max allowed interrupts per VF + */ + if (!(vector_id < pf->num_msix_per_vf) || + !ice_vc_isvalid_vsi_id(vf, vsi_id) || + (!vector_id && (map->rxq_map || map->txq_map))) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + /* No need to map VF miscellaneous or rogue vector */ + if (!vector_id) + continue; + + /* Subtract non queue vector from vector_id passed by VF + * to get actual number of VSI queue vector array index + */ + q_vector = vsi->q_vectors[vector_id - ICE_NONQ_VECS_VF]; + if (!q_vector) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + /* lookout for the invalid queue index */ + v_ret = (enum virtchnl_status_code) + ice_cfg_interrupt(vf, vsi, vector_id, map, q_vector); + if (v_ret) + goto error_param; + } + +error_param: + /* send the response to the VF */ + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_IRQ_MAP, v_ret, + NULL, 0); +} + +/** + * ice_vc_cfg_qs_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * called from the VF to configure the Rx/Tx queues + */ +static int ice_vc_cfg_qs_msg(struct ice_vf *vf, u8 *msg) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct virtchnl_vsi_queue_config_info *qci = + (struct virtchnl_vsi_queue_config_info *)msg; + struct virtchnl_queue_pair_info *qpi; + u16 num_rxq = 0, num_txq = 0; + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + int i; + + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vc_isvalid_vsi_id(vf, qci->vsi_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (qci->num_queue_pairs > ICE_MAX_RSS_QS_PER_VF || + qci->num_queue_pairs > min_t(u16, vsi->alloc_txq, vsi->alloc_rxq)) { + dev_err(ice_pf_to_dev(pf), "VF-%d requesting more than supported number of queues: %d\n", + vf->vf_id, min_t(u16, vsi->alloc_txq, vsi->alloc_rxq)); + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + for (i = 0; i < qci->num_queue_pairs; i++) { + qpi = &qci->qpair[i]; + if (qpi->txq.vsi_id != qci->vsi_id || + qpi->rxq.vsi_id != qci->vsi_id || + qpi->rxq.queue_id != qpi->txq.queue_id || + qpi->txq.headwb_enabled || + !ice_vc_isvalid_ring_len(qpi->txq.ring_len) || + !ice_vc_isvalid_ring_len(qpi->rxq.ring_len) || + !ice_vc_isvalid_q_id(vf, qci->vsi_id, qpi->txq.queue_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + /* copy Tx queue info from VF into VSI */ + if (qpi->txq.ring_len > 0) { + num_txq++; + vsi->tx_rings[i]->dma = qpi->txq.dma_ring_addr; + vsi->tx_rings[i]->count = qpi->txq.ring_len; + } + + /* copy Rx queue info from VF into VSI */ + if (qpi->rxq.ring_len > 0) { + u16 max_frame_size = ice_vc_get_max_frame_size(vf); + + num_rxq++; + vsi->rx_rings[i]->dma = qpi->rxq.dma_ring_addr; + vsi->rx_rings[i]->count = qpi->rxq.ring_len; + + if (qpi->rxq.databuffer_size != 0 && + (qpi->rxq.databuffer_size > ((16 * 1024) - 128) || + qpi->rxq.databuffer_size < 1024)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + vsi->rx_buf_len = qpi->rxq.databuffer_size; + vsi->rx_rings[i]->rx_buf_len = vsi->rx_buf_len; + if (qpi->rxq.max_pkt_size > max_frame_size || + qpi->rxq.max_pkt_size < 64) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + } + + vsi->max_frame = qpi->rxq.max_pkt_size; + /* add space for the port VLAN since the VF driver is not + * expected to account for it in the MTU calculation + */ + if (vf->port_vlan_info) + vsi->max_frame += VLAN_HLEN; + } + + /* VF can request to configure less than allocated queues or default + * allocated queues. So update the VSI with new number + */ + vsi->num_txq = num_txq; + vsi->num_rxq = num_rxq; + /* All queues of VF VSI are in TC 0 */ + vsi->tc_cfg.tc_info[0].qcount_tx = num_txq; + vsi->tc_cfg.tc_info[0].qcount_rx = num_rxq; + + if (ice_vsi_cfg_lan_txqs(vsi) || ice_vsi_cfg_rxqs(vsi)) + v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR; + +error_param: + /* send the response to the VF */ + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_CONFIG_VSI_QUEUES, v_ret, + NULL, 0); +} + +/** + * ice_is_vf_trusted + * @vf: pointer to the VF info + */ +static bool ice_is_vf_trusted(struct ice_vf *vf) +{ + return test_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps); +} + +/** + * ice_can_vf_change_mac + * @vf: pointer to the VF info + * + * Return true if the VF is allowed to change its MAC filters, false otherwise + */ +static bool ice_can_vf_change_mac(struct ice_vf *vf) +{ + /* If the VF MAC address has been set administratively (via the + * ndo_set_vf_mac command), then deny permission to the VF to + * add/delete unicast MAC addresses, unless the VF is trusted + */ + if (vf->pf_set_mac && !ice_is_vf_trusted(vf)) + return false; + + return true; +} + +/** + * ice_vc_add_mac_addr - attempt to add the MAC address passed in + * @vf: pointer to the VF info + * @vsi: pointer to the VF's VSI + * @mac_addr: MAC address to add + */ +static int +ice_vc_add_mac_addr(struct ice_vf *vf, struct ice_vsi *vsi, u8 *mac_addr) +{ + struct device *dev = ice_pf_to_dev(vf->pf); + enum ice_status status; + int ret = 0; + + /* default unicast MAC already added */ + if (ether_addr_equal(mac_addr, vf->dflt_lan_addr.addr)) + return 0; + + if (is_unicast_ether_addr(mac_addr) && !ice_can_vf_change_mac(vf)) { + dev_err(dev, "VF attempting to override administratively set MAC address, bring down and up the VF interface to resume normal operation\n"); + return -EPERM; + } + + status = ice_fltr_add_mac(vsi, mac_addr, ICE_FWD_TO_VSI); + if (status == ICE_ERR_ALREADY_EXISTS) { + dev_dbg(dev, "MAC %pM already exists for VF %d\n", mac_addr, + vf->vf_id); + /* don't return since we might need to update + * the primary MAC in ice_vfhw_mac_add() below + */ + ret = -EEXIST; + } else if (status) { + dev_err(dev, "Failed to add MAC %pM for VF %d\n, error %s\n", + mac_addr, vf->vf_id, ice_stat_str(status)); + return -EIO; + } else { + vf->num_mac++; + } + + /* Set the default LAN address to the latest unicast MAC address added + * by the VF. The default LAN address is reported by the PF via + * ndo_get_vf_config. + */ + if (is_unicast_ether_addr(mac_addr)) + ether_addr_copy(vf->dflt_lan_addr.addr, mac_addr); + + return ret; +} + +/** + * ice_vc_del_mac_addr - attempt to delete the MAC address passed in + * @vf: pointer to the VF info + * @vsi: pointer to the VF's VSI + * @mac_addr: MAC address to delete + */ +static int +ice_vc_del_mac_addr(struct ice_vf *vf, struct ice_vsi *vsi, u8 *mac_addr) +{ + struct device *dev = ice_pf_to_dev(vf->pf); + enum ice_status status; + + if (!ice_can_vf_change_mac(vf) && + ether_addr_equal(mac_addr, vf->dflt_lan_addr.addr)) + return 0; + + status = ice_fltr_remove_mac(vsi, mac_addr, ICE_FWD_TO_VSI); + if (status == ICE_ERR_DOES_NOT_EXIST) { + dev_err(dev, "MAC %pM does not exist for VF %d\n", mac_addr, + vf->vf_id); + return -ENOENT; + } else if (status) { + dev_err(dev, "Failed to delete MAC %pM for VF %d, error %s\n", + mac_addr, vf->vf_id, ice_stat_str(status)); + return -EIO; + } + + if (ether_addr_equal(mac_addr, vf->dflt_lan_addr.addr)) + eth_zero_addr(vf->dflt_lan_addr.addr); + + vf->num_mac--; + + return 0; +} + +/** + * ice_vc_handle_mac_addr_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @set: true if MAC filters are being set, false otherwise + * + * add guest MAC address filter + */ +static int +ice_vc_handle_mac_addr_msg(struct ice_vf *vf, u8 *msg, bool set) +{ + int (*ice_vc_cfg_mac) + (struct ice_vf *vf, struct ice_vsi *vsi, u8 *mac_addr); + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct virtchnl_ether_addr_list *al = + (struct virtchnl_ether_addr_list *)msg; + struct ice_pf *pf = vf->pf; + enum virtchnl_ops vc_op; + struct ice_vsi *vsi; + int i; + + if (set) { + vc_op = VIRTCHNL_OP_ADD_ETH_ADDR; + ice_vc_cfg_mac = ice_vc_add_mac_addr; + } else { + vc_op = VIRTCHNL_OP_DEL_ETH_ADDR; + ice_vc_cfg_mac = ice_vc_del_mac_addr; + } + + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states) || + !ice_vc_isvalid_vsi_id(vf, al->vsi_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto handle_mac_exit; + } + + /* If this VF is not privileged, then we can't add more than a + * limited number of addresses. Check to make sure that the + * additions do not push us over the limit. + */ + if (set && !ice_is_vf_trusted(vf) && + (vf->num_mac + al->num_elements) > ICE_MAX_MACADDR_PER_VF) { + dev_err(ice_pf_to_dev(pf), "Can't add more MAC addresses, because VF-%d is not trusted, switch the VF to trusted mode in order to add more functionalities\n", + vf->vf_id); + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto handle_mac_exit; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto handle_mac_exit; + } + + for (i = 0; i < al->num_elements; i++) { + u8 *mac_addr = al->list[i].addr; + int result; + + if (is_broadcast_ether_addr(mac_addr) || + is_zero_ether_addr(mac_addr)) + continue; + + result = ice_vc_cfg_mac(vf, vsi, mac_addr); + if (result == -EEXIST || result == -ENOENT) { + continue; + } else if (result) { + v_ret = VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR; + goto handle_mac_exit; + } + } + +handle_mac_exit: + /* send the response to the VF */ + return ice_vc_send_msg_to_vf(vf, vc_op, v_ret, NULL, 0); +} + +/** + * ice_vc_add_mac_addr_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * add guest MAC address filter + */ +static int ice_vc_add_mac_addr_msg(struct ice_vf *vf, u8 *msg) +{ + return ice_vc_handle_mac_addr_msg(vf, msg, true); +} + +/** + * ice_vc_del_mac_addr_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * remove guest MAC address filter + */ +static int ice_vc_del_mac_addr_msg(struct ice_vf *vf, u8 *msg) +{ + return ice_vc_handle_mac_addr_msg(vf, msg, false); +} + +/** + * ice_vc_request_qs_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * VFs get a default number of queues but can use this message to request a + * different number. If the request is successful, PF will reset the VF and + * return 0. If unsuccessful, PF will send message informing VF of number of + * available queue pairs via virtchnl message response to VF. + */ +static int ice_vc_request_qs_msg(struct ice_vf *vf, u8 *msg) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct virtchnl_vf_res_request *vfres = + (struct virtchnl_vf_res_request *)msg; + u16 req_queues = vfres->num_queue_pairs; + struct ice_pf *pf = vf->pf; + u16 max_allowed_vf_queues; + u16 tx_rx_queue_left; + struct device *dev; + u16 cur_queues; + + dev = ice_pf_to_dev(pf); + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + cur_queues = vf->num_vf_qs; + tx_rx_queue_left = min_t(u16, ice_get_avail_txq_count(pf), + ice_get_avail_rxq_count(pf)); + max_allowed_vf_queues = tx_rx_queue_left + cur_queues; + if (!req_queues) { + dev_err(dev, "VF %d tried to request 0 queues. Ignoring.\n", + vf->vf_id); + } else if (req_queues > ICE_MAX_RSS_QS_PER_VF) { + dev_err(dev, "VF %d tried to request more than %d queues.\n", + vf->vf_id, ICE_MAX_RSS_QS_PER_VF); + vfres->num_queue_pairs = ICE_MAX_RSS_QS_PER_VF; + } else if (req_queues > cur_queues && + req_queues - cur_queues > tx_rx_queue_left) { + dev_warn(dev, "VF %d requested %u more queues, but only %u left.\n", + vf->vf_id, req_queues - cur_queues, tx_rx_queue_left); + vfres->num_queue_pairs = min_t(u16, max_allowed_vf_queues, + ICE_MAX_RSS_QS_PER_VF); + } else { + /* request is successful, then reset VF */ + vf->num_req_qs = req_queues; + ice_vc_reset_vf(vf); + dev_info(dev, "VF %d granted request of %u queues.\n", + vf->vf_id, req_queues); + return 0; + } + +error_param: + /* send the response to the VF */ + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_REQUEST_QUEUES, + v_ret, (u8 *)vfres, sizeof(*vfres)); +} + +/** + * ice_set_vf_port_vlan + * @netdev: network interface device structure + * @vf_id: VF identifier + * @vlan_id: VLAN ID being set + * @qos: priority setting + * @vlan_proto: VLAN protocol + * + * program VF Port VLAN ID and/or QoS + */ +int +ice_set_vf_port_vlan(struct net_device *netdev, int vf_id, u16 vlan_id, u8 qos, + __be16 vlan_proto) +{ + struct ice_pf *pf = ice_netdev_to_pf(netdev); + struct device *dev; + struct ice_vf *vf; + u16 vlanprio; + int ret; + + dev = ice_pf_to_dev(pf); + if (ice_validate_vf_id(pf, vf_id)) + return -EINVAL; + + if (vlan_id >= VLAN_N_VID || qos > 7) { + dev_err(dev, "Invalid Port VLAN parameters for VF %d, ID %d, QoS %d\n", + vf_id, vlan_id, qos); + return -EINVAL; + } + + if (vlan_proto != htons(ETH_P_8021Q)) { + dev_err(dev, "VF VLAN protocol is not supported\n"); + return -EPROTONOSUPPORT; + } + + vf = &pf->vf[vf_id]; + ret = ice_check_vf_ready_for_cfg(vf); + if (ret) + return ret; + + vlanprio = vlan_id | (qos << VLAN_PRIO_SHIFT); + + if (vf->port_vlan_info == vlanprio) { + /* duplicate request, so just return success */ + dev_dbg(dev, "Duplicate pvid %d request\n", vlanprio); + return 0; + } + + mutex_lock(&vf->cfg_lock); + + vf->port_vlan_info = vlanprio; + + if (vf->port_vlan_info) + dev_info(dev, "Setting VLAN %d, QoS 0x%x on VF %d\n", + vlan_id, qos, vf_id); + else + dev_info(dev, "Clearing port VLAN on VF %d\n", vf_id); + + ice_vc_reset_vf(vf); + mutex_unlock(&vf->cfg_lock); + + return 0; +} + +/** + * ice_vf_vlan_offload_ena - determine if capabilities support VLAN offloads + * @caps: VF driver negotiated capabilities + * + * Return true if VIRTCHNL_VF_OFFLOAD_VLAN capability is set, else return false + */ +static bool ice_vf_vlan_offload_ena(u32 caps) +{ + return !!(caps & VIRTCHNL_VF_OFFLOAD_VLAN); +} + +/** + * ice_vc_process_vlan_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * @add_v: Add VLAN if true, otherwise delete VLAN + * + * Process virtchnl op to add or remove programmed guest VLAN ID + */ +static int ice_vc_process_vlan_msg(struct ice_vf *vf, u8 *msg, bool add_v) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct virtchnl_vlan_filter_list *vfl = + (struct virtchnl_vlan_filter_list *)msg; + struct ice_pf *pf = vf->pf; + bool vlan_promisc = false; + struct ice_vsi *vsi; + struct device *dev; + struct ice_hw *hw; + int status = 0; + u8 promisc_m; + int i; + + dev = ice_pf_to_dev(pf); + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vf_vlan_offload_ena(vf->driver_caps)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vc_isvalid_vsi_id(vf, vfl->vsi_id)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + for (i = 0; i < vfl->num_elements; i++) { + if (vfl->vlan_id[i] >= VLAN_N_VID) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + dev_err(dev, "invalid VF VLAN id %d\n", + vfl->vlan_id[i]); + goto error_param; + } + } + + hw = &pf->hw; + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (add_v && !ice_is_vf_trusted(vf) && + vsi->num_vlan >= ICE_MAX_VLAN_PER_VF) { + dev_info(dev, "VF-%d is not trusted, switch the VF to trusted mode, in order to add more VLAN addresses\n", + vf->vf_id); + /* There is no need to let VF know about being not trusted, + * so we can just return success message here + */ + goto error_param; + } + + if (vsi->info.pvid) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if ((test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states) || + test_bit(ICE_VF_STATE_MC_PROMISC, vf->vf_states)) && + test_bit(ICE_FLAG_VF_TRUE_PROMISC_ENA, pf->flags)) + vlan_promisc = true; + + if (add_v) { + for (i = 0; i < vfl->num_elements; i++) { + u16 vid = vfl->vlan_id[i]; + + if (!ice_is_vf_trusted(vf) && + vsi->num_vlan >= ICE_MAX_VLAN_PER_VF) { + dev_info(dev, "VF-%d is not trusted, switch the VF to trusted mode, in order to add more VLAN addresses\n", + vf->vf_id); + /* There is no need to let VF know about being + * not trusted, so we can just return success + * message here as well. + */ + goto error_param; + } + + /* we add VLAN 0 by default for each VF so we can enable + * Tx VLAN anti-spoof without triggering MDD events so + * we don't need to add it again here + */ + if (!vid) + continue; + + status = ice_vsi_add_vlan(vsi, vid, ICE_FWD_TO_VSI); + if (status) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + /* Enable VLAN pruning when non-zero VLAN is added */ + if (!vlan_promisc && vid && + !ice_vsi_is_vlan_pruning_ena(vsi)) { + status = ice_cfg_vlan_pruning(vsi, true, false); + if (status) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + dev_err(dev, "Enable VLAN pruning on VLAN ID: %d failed error-%d\n", + vid, status); + goto error_param; + } + } else if (vlan_promisc) { + /* Enable Ucast/Mcast VLAN promiscuous mode */ + promisc_m = ICE_PROMISC_VLAN_TX | + ICE_PROMISC_VLAN_RX; + + status = ice_set_vsi_promisc(hw, vsi->idx, + promisc_m, vid); + if (status) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + dev_err(dev, "Enable Unicast/multicast promiscuous mode on VLAN ID:%d failed error-%d\n", + vid, status); + } + } + } + } else { + /* In case of non_trusted VF, number of VLAN elements passed + * to PF for removal might be greater than number of VLANs + * filter programmed for that VF - So, use actual number of + * VLANS added earlier with add VLAN opcode. In order to avoid + * removing VLAN that doesn't exist, which result to sending + * erroneous failed message back to the VF + */ + int num_vf_vlan; + + num_vf_vlan = vsi->num_vlan; + for (i = 0; i < vfl->num_elements && i < num_vf_vlan; i++) { + u16 vid = vfl->vlan_id[i]; + + /* we add VLAN 0 by default for each VF so we can enable + * Tx VLAN anti-spoof without triggering MDD events so + * we don't want a VIRTCHNL request to remove it + */ + if (!vid) + continue; + + /* Make sure ice_vsi_kill_vlan is successful before + * updating VLAN information + */ + status = ice_vsi_kill_vlan(vsi, vid); + if (status) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + /* Disable VLAN pruning when only VLAN 0 is left */ + if (vsi->num_vlan == 1 && + ice_vsi_is_vlan_pruning_ena(vsi)) + ice_cfg_vlan_pruning(vsi, false, false); + + /* Disable Unicast/Multicast VLAN promiscuous mode */ + if (vlan_promisc) { + promisc_m = ICE_PROMISC_VLAN_TX | + ICE_PROMISC_VLAN_RX; + + ice_clear_vsi_promisc(hw, vsi->idx, + promisc_m, vid); + } + } + } + +error_param: + /* send the response to the VF */ + if (add_v) + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ADD_VLAN, v_ret, + NULL, 0); + else + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DEL_VLAN, v_ret, + NULL, 0); +} + +/** + * ice_vc_add_vlan_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * Add and program guest VLAN ID + */ +static int ice_vc_add_vlan_msg(struct ice_vf *vf, u8 *msg) +{ + return ice_vc_process_vlan_msg(vf, msg, true); +} + +/** + * ice_vc_remove_vlan_msg + * @vf: pointer to the VF info + * @msg: pointer to the msg buffer + * + * remove programmed guest VLAN ID + */ +static int ice_vc_remove_vlan_msg(struct ice_vf *vf, u8 *msg) +{ + return ice_vc_process_vlan_msg(vf, msg, false); +} + +/** + * ice_vc_ena_vlan_stripping + * @vf: pointer to the VF info + * + * Enable VLAN header stripping for a given VF + */ +static int ice_vc_ena_vlan_stripping(struct ice_vf *vf) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vf_vlan_offload_ena(vf->driver_caps)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (ice_vsi_manage_vlan_stripping(vsi, true)) + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + +error_param: + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_ENABLE_VLAN_STRIPPING, + v_ret, NULL, 0); +} + +/** + * ice_vc_dis_vlan_stripping + * @vf: pointer to the VF info + * + * Disable VLAN header stripping for a given VF + */ +static int ice_vc_dis_vlan_stripping(struct ice_vf *vf) +{ + enum virtchnl_status_code v_ret = VIRTCHNL_STATUS_SUCCESS; + struct ice_pf *pf = vf->pf; + struct ice_vsi *vsi; + + if (!test_bit(ICE_VF_STATE_ACTIVE, vf->vf_states)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (!ice_vf_vlan_offload_ena(vf->driver_caps)) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) { + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + goto error_param; + } + + if (ice_vsi_manage_vlan_stripping(vsi, false)) + v_ret = VIRTCHNL_STATUS_ERR_PARAM; + +error_param: + return ice_vc_send_msg_to_vf(vf, VIRTCHNL_OP_DISABLE_VLAN_STRIPPING, + v_ret, NULL, 0); +} + +/** + * ice_vf_init_vlan_stripping - enable/disable VLAN stripping on initialization + * @vf: VF to enable/disable VLAN stripping for on initialization + * + * If the VIRTCHNL_VF_OFFLOAD_VLAN flag is set enable VLAN stripping, else if + * the flag is cleared then we want to disable stripping. For example, the flag + * will be cleared when port VLANs are configured by the administrator before + * passing the VF to the guest or if the AVF driver doesn't support VLAN + * offloads. + */ +static int ice_vf_init_vlan_stripping(struct ice_vf *vf) +{ + struct ice_vsi *vsi = vf->pf->vsi[vf->lan_vsi_idx]; + + if (!vsi) + return -EINVAL; + + /* don't modify stripping if port VLAN is configured */ + if (vsi->info.pvid) + return 0; + + if (ice_vf_vlan_offload_ena(vf->driver_caps)) + return ice_vsi_manage_vlan_stripping(vsi, true); + else + return ice_vsi_manage_vlan_stripping(vsi, false); +} + +/** + * ice_vc_process_vf_msg - Process request from VF + * @pf: pointer to the PF structure + * @event: pointer to the AQ event + * + * called from the common asq/arq handler to + * process request from VF + */ +void ice_vc_process_vf_msg(struct ice_pf *pf, struct ice_rq_event_info *event) +{ + u32 v_opcode = le32_to_cpu(event->desc.cookie_high); + s16 vf_id = le16_to_cpu(event->desc.retval); + u16 msglen = event->msg_len; + u8 *msg = event->msg_buf; + struct ice_vf *vf = NULL; + struct device *dev; + int err = 0; + + dev = ice_pf_to_dev(pf); + if (ice_validate_vf_id(pf, vf_id)) { + err = -EINVAL; + goto error_handler; + } + + vf = &pf->vf[vf_id]; + + /* Check if VF is disabled. */ + if (test_bit(ICE_VF_STATE_DIS, vf->vf_states)) { + err = -EPERM; + goto error_handler; + } + + /* Perform basic checks on the msg */ + err = virtchnl_vc_validate_vf_msg(&vf->vf_ver, v_opcode, msg, msglen); + if (err) { + if (err == VIRTCHNL_STATUS_ERR_PARAM) + err = -EPERM; + else + err = -EINVAL; + } + +error_handler: + if (err) { + ice_vc_send_msg_to_vf(vf, v_opcode, VIRTCHNL_STATUS_ERR_PARAM, + NULL, 0); + dev_err(dev, "Invalid message from VF %d, opcode %d, len %d, error %d\n", + vf_id, v_opcode, msglen, err); + return; + } + + /* VF is being configured in another context that triggers a VFR, so no + * need to process this message + */ + if (!mutex_trylock(&vf->cfg_lock)) { + dev_info(dev, "VF %u is being configured in another context that will trigger a VFR, so there is no need to handle this message\n", + vf->vf_id); + return; + } + + switch (v_opcode) { + case VIRTCHNL_OP_VERSION: + err = ice_vc_get_ver_msg(vf, msg); + break; + case VIRTCHNL_OP_GET_VF_RESOURCES: + err = ice_vc_get_vf_res_msg(vf, msg); + if (ice_vf_init_vlan_stripping(vf)) + dev_err(dev, "Failed to initialize VLAN stripping for VF %d\n", + vf->vf_id); + ice_vc_notify_vf_link_state(vf); + break; + case VIRTCHNL_OP_RESET_VF: + ice_vc_reset_vf_msg(vf); + break; + case VIRTCHNL_OP_ADD_ETH_ADDR: + err = ice_vc_add_mac_addr_msg(vf, msg); + break; + case VIRTCHNL_OP_DEL_ETH_ADDR: + err = ice_vc_del_mac_addr_msg(vf, msg); + break; + case VIRTCHNL_OP_CONFIG_VSI_QUEUES: + err = ice_vc_cfg_qs_msg(vf, msg); + break; + case VIRTCHNL_OP_ENABLE_QUEUES: + err = ice_vc_ena_qs_msg(vf, msg); + ice_vc_notify_vf_link_state(vf); + break; + case VIRTCHNL_OP_DISABLE_QUEUES: + err = ice_vc_dis_qs_msg(vf, msg); + break; + case VIRTCHNL_OP_REQUEST_QUEUES: + err = ice_vc_request_qs_msg(vf, msg); + break; + case VIRTCHNL_OP_CONFIG_IRQ_MAP: + err = ice_vc_cfg_irq_map_msg(vf, msg); + break; + case VIRTCHNL_OP_CONFIG_RSS_KEY: + err = ice_vc_config_rss_key(vf, msg); + break; + case VIRTCHNL_OP_CONFIG_RSS_LUT: + err = ice_vc_config_rss_lut(vf, msg); + break; + case VIRTCHNL_OP_GET_STATS: + err = ice_vc_get_stats_msg(vf, msg); + break; + case VIRTCHNL_OP_CONFIG_PROMISCUOUS_MODE: + err = ice_vc_cfg_promiscuous_mode_msg(vf, msg); + break; + case VIRTCHNL_OP_ADD_VLAN: + err = ice_vc_add_vlan_msg(vf, msg); + break; + case VIRTCHNL_OP_DEL_VLAN: + err = ice_vc_remove_vlan_msg(vf, msg); + break; + case VIRTCHNL_OP_ENABLE_VLAN_STRIPPING: + err = ice_vc_ena_vlan_stripping(vf); + break; + case VIRTCHNL_OP_DISABLE_VLAN_STRIPPING: + err = ice_vc_dis_vlan_stripping(vf); + break; + case VIRTCHNL_OP_UNKNOWN: + default: + dev_err(dev, "Unsupported opcode %d from VF %d\n", v_opcode, + vf_id); + err = ice_vc_send_msg_to_vf(vf, v_opcode, + VIRTCHNL_STATUS_ERR_NOT_SUPPORTED, + NULL, 0); + break; + } + if (err) { + /* Helper function cares less about error return values here + * as it is busy with pending work. + */ + dev_info(dev, "PF failed to honor VF %d, opcode %d, error %d\n", + vf_id, v_opcode, err); + } + + mutex_unlock(&vf->cfg_lock); +} + +/** + * ice_get_vf_cfg + * @netdev: network interface device structure + * @vf_id: VF identifier + * @ivi: VF configuration structure + * + * return VF configuration + */ +int +ice_get_vf_cfg(struct net_device *netdev, int vf_id, struct ifla_vf_info *ivi) +{ + struct ice_pf *pf = ice_netdev_to_pf(netdev); + struct ice_vf *vf; + + if (ice_validate_vf_id(pf, vf_id)) + return -EINVAL; + + vf = &pf->vf[vf_id]; + + if (ice_check_vf_init(pf, vf)) + return -EBUSY; + + ivi->vf = vf_id; + ether_addr_copy(ivi->mac, vf->dflt_lan_addr.addr); + + /* VF configuration for VLAN and applicable QoS */ + ivi->vlan = vf->port_vlan_info & VLAN_VID_MASK; + ivi->qos = (vf->port_vlan_info & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT; + + ivi->trusted = vf->trusted; + ivi->spoofchk = vf->spoofchk; + if (!vf->link_forced) + ivi->linkstate = IFLA_VF_LINK_STATE_AUTO; + else if (vf->link_up) + ivi->linkstate = IFLA_VF_LINK_STATE_ENABLE; + else + ivi->linkstate = IFLA_VF_LINK_STATE_DISABLE; + ivi->max_tx_rate = vf->tx_rate; + ivi->min_tx_rate = 0; + return 0; +} + +/** + * ice_unicast_mac_exists - check if the unicast MAC exists on the PF's switch + * @pf: PF used to reference the switch's rules + * @umac: unicast MAC to compare against existing switch rules + * + * Return true on the first/any match, else return false + */ +static bool ice_unicast_mac_exists(struct ice_pf *pf, u8 *umac) +{ + struct ice_sw_recipe *mac_recipe_list = + &pf->hw.switch_info->recp_list[ICE_SW_LKUP_MAC]; + struct ice_fltr_mgmt_list_entry *list_itr; + struct list_head *rule_head; + struct mutex *rule_lock; /* protect MAC filter list access */ + + rule_head = &mac_recipe_list->filt_rules; + rule_lock = &mac_recipe_list->filt_rule_lock; + + mutex_lock(rule_lock); + list_for_each_entry(list_itr, rule_head, list_entry) { + u8 *existing_mac = &list_itr->fltr_info.l_data.mac.mac_addr[0]; + + if (ether_addr_equal(existing_mac, umac)) { + mutex_unlock(rule_lock); + return true; + } + } + + mutex_unlock(rule_lock); + + return false; +} + +/** + * ice_set_vf_mac + * @netdev: network interface device structure + * @vf_id: VF identifier + * @mac: MAC address + * + * program VF MAC address + */ +int ice_set_vf_mac(struct net_device *netdev, int vf_id, u8 *mac) +{ + struct ice_pf *pf = ice_netdev_to_pf(netdev); + struct ice_vf *vf; + int ret; + + if (ice_validate_vf_id(pf, vf_id)) + return -EINVAL; + + if (is_multicast_ether_addr(mac)) { + netdev_err(netdev, "%pM not a valid unicast address\n", mac); + return -EINVAL; + } + + vf = &pf->vf[vf_id]; + /* nothing left to do, unicast MAC already set */ + if (ether_addr_equal(vf->dflt_lan_addr.addr, mac)) + return 0; + + ret = ice_check_vf_ready_for_cfg(vf); + if (ret) + return ret; + + if (ice_unicast_mac_exists(pf, mac)) { + netdev_err(netdev, "Unicast MAC %pM already exists on this PF. Preventing setting VF %u unicast MAC address to %pM\n", + mac, vf_id, mac); + return -EINVAL; + } + + mutex_lock(&vf->cfg_lock); + + /* VF is notified of its new MAC via the PF's response to the + * VIRTCHNL_OP_GET_VF_RESOURCES message after the VF has been reset + */ + ether_addr_copy(vf->dflt_lan_addr.addr, mac); + if (is_zero_ether_addr(mac)) { + /* VF will send VIRTCHNL_OP_ADD_ETH_ADDR message with its MAC */ + vf->pf_set_mac = false; + netdev_info(netdev, "Removing MAC on VF %d. VF driver will be reinitialized\n", + vf->vf_id); + } else { + /* PF will add MAC rule for the VF */ + vf->pf_set_mac = true; + netdev_info(netdev, "Setting MAC %pM on VF %d. VF driver will be reinitialized\n", + mac, vf_id); + } + + ice_vc_reset_vf(vf); + mutex_unlock(&vf->cfg_lock); + return 0; +} + +/** + * ice_set_vf_trust + * @netdev: network interface device structure + * @vf_id: VF identifier + * @trusted: Boolean value to enable/disable trusted VF + * + * Enable or disable a given VF as trusted + */ +int ice_set_vf_trust(struct net_device *netdev, int vf_id, bool trusted) +{ + struct ice_pf *pf = ice_netdev_to_pf(netdev); + struct ice_vf *vf; + int ret; + + if (ice_validate_vf_id(pf, vf_id)) + return -EINVAL; + + vf = &pf->vf[vf_id]; + ret = ice_check_vf_ready_for_cfg(vf); + if (ret) + return ret; + + /* Check if already trusted */ + if (trusted == vf->trusted) + return 0; + + mutex_lock(&vf->cfg_lock); + + vf->trusted = trusted; + ice_vc_reset_vf(vf); + dev_info(ice_pf_to_dev(pf), "VF %u is now %strusted\n", + vf_id, trusted ? "" : "un"); + + mutex_unlock(&vf->cfg_lock); + + return 0; +} + +/** + * ice_set_vf_link_state + * @netdev: network interface device structure + * @vf_id: VF identifier + * @link_state: required link state + * + * Set VF's link state, irrespective of physical link state status + */ +int ice_set_vf_link_state(struct net_device *netdev, int vf_id, int link_state) +{ + struct ice_pf *pf = ice_netdev_to_pf(netdev); + struct ice_vf *vf; + int ret; + + if (ice_validate_vf_id(pf, vf_id)) + return -EINVAL; + + vf = &pf->vf[vf_id]; + ret = ice_check_vf_ready_for_cfg(vf); + if (ret) + return ret; + + switch (link_state) { + case IFLA_VF_LINK_STATE_AUTO: + vf->link_forced = false; + break; + case IFLA_VF_LINK_STATE_ENABLE: + vf->link_forced = true; + vf->link_up = true; + break; + case IFLA_VF_LINK_STATE_DISABLE: + vf->link_forced = true; + vf->link_up = false; + break; + default: + return -EINVAL; + } + + ice_vc_notify_vf_link_state(vf); + + return 0; +} + +/** + * ice_get_vf_stats - populate some stats for the VF + * @netdev: the netdev of the PF + * @vf_id: the host OS identifier (0-255) + * @vf_stats: pointer to the OS memory to be initialized + */ +int ice_get_vf_stats(struct net_device *netdev, int vf_id, + struct ifla_vf_stats *vf_stats) +{ + struct ice_pf *pf = ice_netdev_to_pf(netdev); + struct ice_eth_stats *stats; + struct ice_vsi *vsi; + struct ice_vf *vf; + int ret; + + if (ice_validate_vf_id(pf, vf_id)) + return -EINVAL; + + vf = &pf->vf[vf_id]; + ret = ice_check_vf_ready_for_cfg(vf); + if (ret) + return ret; + + vsi = pf->vsi[vf->lan_vsi_idx]; + if (!vsi) + return -EINVAL; + + ice_update_eth_stats(vsi); + stats = &vsi->eth_stats; + + memset(vf_stats, 0, sizeof(*vf_stats)); + + vf_stats->rx_packets = stats->rx_unicast + stats->rx_broadcast + + stats->rx_multicast; + vf_stats->tx_packets = stats->tx_unicast + stats->tx_broadcast + + stats->tx_multicast; + vf_stats->rx_bytes = stats->rx_bytes; + vf_stats->tx_bytes = stats->tx_bytes; + vf_stats->broadcast = stats->rx_broadcast; + vf_stats->multicast = stats->rx_multicast; + vf_stats->rx_dropped = stats->rx_discards; + vf_stats->tx_dropped = stats->tx_discards; + + return 0; +} + +/** + * ice_print_vf_rx_mdd_event - print VF Rx malicious driver detect event + * @vf: pointer to the VF structure + */ +void ice_print_vf_rx_mdd_event(struct ice_vf *vf) +{ + struct ice_pf *pf = vf->pf; + struct device *dev; + + dev = ice_pf_to_dev(pf); + + dev_info(dev, "%d Rx Malicious Driver Detection events detected on PF %d VF %d MAC %pM. mdd-auto-reset-vfs=%s\n", + vf->mdd_rx_events.count, pf->hw.pf_id, vf->vf_id, + vf->dflt_lan_addr.addr, + test_bit(ICE_FLAG_MDD_AUTO_RESET_VF, pf->flags) + ? "on" : "off"); +} + +/** + * ice_print_vfs_mdd_event - print VFs malicious driver detect event + * @pf: pointer to the PF structure + * + * Called from ice_handle_mdd_event to rate limit and print VFs MDD events. + */ +void ice_print_vfs_mdd_events(struct ice_pf *pf) +{ + struct device *dev = ice_pf_to_dev(pf); + struct ice_hw *hw = &pf->hw; + int i; + + /* check that there are pending MDD events to print */ + if (!test_and_clear_bit(__ICE_MDD_VF_PRINT_PENDING, pf->state)) + return; + + /* VF MDD event logs are rate limited to one second intervals */ + if (time_is_after_jiffies(pf->last_printed_mdd_jiffies + HZ * 1)) + return; + + pf->last_printed_mdd_jiffies = jiffies; + + ice_for_each_vf(pf, i) { + struct ice_vf *vf = &pf->vf[i]; + + /* only print Rx MDD event message if there are new events */ + if (vf->mdd_rx_events.count != vf->mdd_rx_events.last_printed) { + vf->mdd_rx_events.last_printed = + vf->mdd_rx_events.count; + ice_print_vf_rx_mdd_event(vf); + } + + /* only print Tx MDD event message if there are new events */ + if (vf->mdd_tx_events.count != vf->mdd_tx_events.last_printed) { + vf->mdd_tx_events.last_printed = + vf->mdd_tx_events.count; + + dev_info(dev, "%d Tx Malicious Driver Detection events detected on PF %d VF %d MAC %pM.\n", + vf->mdd_tx_events.count, hw->pf_id, i, + vf->dflt_lan_addr.addr); + } + } +} + +/** + * ice_restore_all_vfs_msi_state - restore VF MSI state after PF FLR + * @pdev: pointer to a pci_dev structure + * + * Called when recovering from a PF FLR to restore interrupt capability to + * the VFs. + */ +void ice_restore_all_vfs_msi_state(struct pci_dev *pdev) +{ + struct pci_dev *vfdev; + u16 vf_id; + int pos; + + if (!pci_num_vf(pdev)) + return; + + pos = pci_find_ext_capability(pdev, PCI_EXT_CAP_ID_SRIOV); + if (pos) { + pci_read_config_word(pdev, pos + PCI_SRIOV_VF_DID, + &vf_id); + vfdev = pci_get_device(pdev->vendor, vf_id, NULL); + while (vfdev) { + if (vfdev->is_virtfn && vfdev->physfn == pdev) + pci_restore_msi_state(vfdev); + vfdev = pci_get_device(pdev->vendor, vf_id, + vfdev); + } + } +} |