/* Public functions which may be accessed by all driver files */
/** * ice_get_vf_by_id - Get pointer to VF by ID * @pf: the PF private structure * @vf_id: the VF ID to locate * * Locate and return a pointer to the VF structure associated with a given ID. * Returns NULL if the ID does not have a valid VF structure associated with * it. * * This function takes a reference to the VF, which must be released by * calling ice_put_vf() once the caller is finished accessing the VF structure * returned.
*/ struct ice_vf *ice_get_vf_by_id(struct ice_pf *pf, u16 vf_id)
{ struct ice_vf *vf;
/** * ice_release_vf - Release VF associated with a refcount * @ref: the kref decremented to zero * * Callback function for kref_put to release a VF once its reference count has * hit zero.
*/ staticvoid ice_release_vf(struct kref *ref)
{ struct ice_vf *vf = container_of(ref, struct ice_vf, refcnt);
pci_dev_put(vf->vfdev);
vf->vf_ops->free(vf);
}
/** * ice_put_vf - Release a reference to a VF * @vf: the VF structure to decrease reference count on * * Decrease the reference count for a VF, and free the entry if it is no * longer in use. * * This must be called after ice_get_vf_by_id() once the reference to the VF * structure is no longer used. Otherwise, the VF structure will never be * freed.
*/ void ice_put_vf(struct ice_vf *vf)
{
kref_put(&vf->refcnt, ice_release_vf);
}
/** * ice_has_vfs - Return true if the PF has any associated VFs * @pf: the PF private structure * * Return whether or not the PF has any allocated VFs. * * Note that this function only guarantees that there are no VFs at the point * of calling it. It does not guarantee that no more VFs will be added.
*/ bool ice_has_vfs(struct ice_pf *pf)
{ /* A simple check that the hash table is not empty does not require * the mutex or rcu_read_lock.
*/ return !hash_empty(pf->vfs.table);
}
/** * ice_get_num_vfs - Get number of allocated VFs * @pf: the PF private structure * * Return the total number of allocated VFs. NOTE: VF IDs are not guaranteed * to be contiguous. Do not assume that a VF ID is guaranteed to be less than * the output of this function.
*/
u16 ice_get_num_vfs(struct ice_pf *pf)
{ struct ice_vf *vf; unsignedint bkt;
u16 num_vfs = 0;
/** * ice_get_vf_vsi - get VF's VSI based on the stored index * @vf: VF used to get VSI
*/ struct ice_vsi *ice_get_vf_vsi(struct ice_vf *vf)
{ if (vf->lan_vsi_idx == ICE_NO_VSI) return NULL;
return vf->pf->vsi[vf->lan_vsi_idx];
}
/** * ice_is_vf_disabled * @vf: pointer to the VF info * * 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. * * Returns true if the caller should consider the VF as disabled whether * because that single VF is explicitly disabled or because the PF is * currently disabled.
*/ bool ice_is_vf_disabled(struct ice_vf *vf)
{ struct ice_pf *pf = vf->pf;
/** * 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.
*/ staticvoid 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.
*/ int ice_check_vf_ready_for_cfg(struct ice_vf *vf)
{
ice_wait_on_vf_reset(vf);
if (ice_is_vf_disabled(vf)) return -EINVAL;
if (ice_check_vf_init(vf)) return -EBUSY;
return 0;
}
/** * 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.
*/ staticvoid ice_trigger_vf_reset(struct ice_vf *vf, bool is_vflr, bool is_pfr)
{ /* 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)
vf->vf_ops->clear_mbx_register(vf);
/** * 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.
*/ staticvoid ice_vf_pre_vsi_rebuild(struct ice_vf *vf)
{ /* Close any IRQ mapping now */ if (vf->vf_ops->irq_close)
vf->vf_ops->irq_close(vf);
/** * ice_vf_reconfig_vsi - Reconfigure a VF VSI with the device * @vf: VF to reconfigure the VSI for * * This is called when a single VF is being reset (i.e. VVF, VFLR, host VF * configuration change, etc). * * It brings the VSI down and then reconfigures it with the hardware.
*/ staticint ice_vf_reconfig_vsi(struct ice_vf *vf)
{ struct ice_vsi *vsi = ice_get_vf_vsi(vf); struct ice_pf *pf = vf->pf; int err;
if (WARN_ON(!vsi)) return -EINVAL;
vsi->flags = ICE_VSI_FLAG_NO_INIT;
ice_vsi_decfg(vsi);
ice_fltr_remove_all(vsi);
err = ice_vsi_cfg(vsi); if (err) {
dev_err(ice_pf_to_dev(pf), "Failed to reconfigure the VF%u's VSI, error %d\n",
vf->vf_id, err); return err;
}
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.). * * It reprograms the VSI configuration back into hardware.
*/ staticint ice_vf_rebuild_vsi(struct ice_vf *vf)
{ struct ice_vsi *vsi = ice_get_vf_vsi(vf); struct ice_pf *pf = vf->pf;
if (WARN_ON(!vsi)) return -EINVAL;
if (ice_vsi_rebuild(vsi, ICE_VSI_FLAG_INIT)) {
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);
return 0;
}
/** * ice_vf_rebuild_host_vlan_cfg - add VLAN 0 filter or rebuild the Port VLAN * @vf: VF to add MAC filters for * @vsi: Pointer to VSI * * 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.
*/ staticint ice_vf_rebuild_host_vlan_cfg(struct ice_vf *vf, struct ice_vsi *vsi)
{ struct ice_vsi_vlan_ops *vlan_ops = ice_get_compat_vsi_vlan_ops(vsi); struct device *dev = ice_pf_to_dev(vf->pf); int err;
if (ice_vf_is_port_vlan_ena(vf)) {
err = vlan_ops->set_port_vlan(vsi, &vf->port_vlan_info); 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;
}
err = vlan_ops->add_vlan(vsi, &vf->port_vlan_info);
} else { /* clear possible previous port vlan config */
err = ice_vsi_clear_port_vlan(vsi); if (err) {
dev_err(dev, "failed to clear port VLAN via VSI parameters for VF %u, error %d\n",
vf->vf_id, err); return err;
}
err = ice_vsi_add_vlan_zero(vsi);
}
if (err) {
dev_err(dev, "failed to add VLAN %u filter for VF %u during VF rebuild, error %d\n",
ice_vf_is_port_vlan_ena(vf) ?
ice_vf_get_port_vlan_id(vf) : 0, vf->vf_id, err); return err;
}
err = vlan_ops->ena_rx_filtering(vsi); if (err)
dev_warn(dev, "failed to enable Rx VLAN filtering for VF %d VSI %d during VF rebuild, error %d\n",
vf->vf_id, vsi->idx, err);
return 0;
}
/** * ice_vf_rebuild_host_tx_rate_cfg - re-apply the Tx rate limiting configuration * @vf: VF to re-apply the configuration for * * Called after a VF VSI has been re-added/rebuild during reset. The PF driver * needs to re-apply the host configured Tx rate limiting configuration.
*/ staticint ice_vf_rebuild_host_tx_rate_cfg(struct ice_vf *vf)
{ struct device *dev = ice_pf_to_dev(vf->pf); struct ice_vsi *vsi = ice_get_vf_vsi(vf); int err;
if (WARN_ON(!vsi)) return -EINVAL;
if (vf->min_tx_rate) {
err = ice_set_min_bw_limit(vsi, (u64)vf->min_tx_rate * 1000); if (err) {
dev_err(dev, "failed to set min Tx rate to %d Mbps for VF %u, error %d\n",
vf->min_tx_rate, vf->vf_id, err); return err;
}
}
if (vf->max_tx_rate) {
err = ice_set_max_bw_limit(vsi, (u64)vf->max_tx_rate * 1000); if (err) {
dev_err(dev, "failed to set max Tx rate to %d Mbps for VF %u, error %d\n",
vf->max_tx_rate, vf->vf_id, err); return err;
}
}
return 0;
}
/** * ice_vf_set_host_trust_cfg - set trust setting based on pre-reset value * @vf: VF to configure trust setting for
*/ staticvoid ice_vf_set_host_trust_cfg(struct ice_vf *vf)
{
assign_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps, vf->trusted);
}
/** * 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.
*/ staticint ice_vf_rebuild_host_mac_cfg(struct ice_vf *vf)
{ struct device *dev = ice_pf_to_dev(vf->pf); struct ice_vsi *vsi = ice_get_vf_vsi(vf);
u8 broadcast[ETH_ALEN]; int status;
if (WARN_ON(!vsi)) return -EINVAL;
if (ice_is_eswitch_mode_switchdev(vf->pf)) return 0;
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 %d\n",
vf->vf_id, status); return status;
}
vf->num_mac++;
if (is_valid_ether_addr(vf->hw_lan_addr)) {
status = ice_fltr_add_mac(vsi, vf->hw_lan_addr,
ICE_FWD_TO_VSI); if (status) {
dev_err(dev, "failed to add default unicast MAC filter %pM for VF %u, error %d\n",
&vf->hw_lan_addr[0], vf->vf_id,
status); return status;
}
vf->num_mac++;
/** * ice_vf_rebuild_aggregator_node_cfg - rebuild aggregator node config * @vsi: Pointer to VSI * * This function moves VSI into corresponding scheduler aggregator node * based on cached value of "aggregator node info" per VSI
*/ staticvoid ice_vf_rebuild_aggregator_node_cfg(struct ice_vsi *vsi)
{ struct ice_pf *pf = vsi->back; struct device *dev; int status;
if (!vsi->agg_node) return;
dev = ice_pf_to_dev(pf); if (vsi->agg_node->num_vsis == ICE_MAX_VSIS_IN_AGG_NODE) {
dev_dbg(dev, "agg_id %u already has reached max_num_vsis %u\n",
vsi->agg_node->agg_id, vsi->agg_node->num_vsis); return;
}
status = ice_move_vsi_to_agg(pf->hw.port_info, vsi->agg_node->agg_id,
vsi->idx, vsi->tc_cfg.ena_tc); if (status)
dev_dbg(dev, "unable to move VSI idx %u into aggregator %u node",
vsi->idx, vsi->agg_node->agg_id); else
vsi->agg_node->num_vsis++;
}
/** * ice_vf_rebuild_host_cfg - host admin configuration is persistent across reset * @vf: VF to rebuild host configuration on
*/ staticvoid ice_vf_rebuild_host_cfg(struct ice_vf *vf)
{ struct device *dev = ice_pf_to_dev(vf->pf); struct ice_vsi *vsi = ice_get_vf_vsi(vf);
if (WARN_ON(!vsi)) return;
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, vsi))
dev_err(dev, "failed to rebuild VLAN configuration for VF %u\n",
vf->vf_id);
if (ice_vf_rebuild_host_tx_rate_cfg(vf))
dev_err(dev, "failed to rebuild Tx rate limiting configuration for VF %u\n",
vf->vf_id);
if (ice_vsi_apply_spoofchk(vsi, vf->spoofchk))
dev_err(dev, "failed to rebuild spoofchk configuration for VF %d\n",
vf->vf_id);
/* rebuild aggregator node config for main VF VSI */
ice_vf_rebuild_aggregator_node_cfg(vsi);
}
/** * ice_set_vf_state_qs_dis - Set VF queues state to disabled * @vf: pointer to the VF structure
*/ staticvoid 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_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
*/ staticvoid 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);
memset(&vf->vlan_v2_caps, 0, sizeof(vf->vlan_v2_caps));
}
/** * ice_vf_post_vsi_rebuild - Reset tasks that occur after VSI rebuild * @vf: the VF being reset * * Perform reset tasks which must occur after the VSI has been re-created or * rebuilt during a VF reset.
*/ staticvoid ice_vf_post_vsi_rebuild(struct ice_vf *vf)
{
ice_vf_rebuild_host_cfg(vf);
ice_vf_set_initialized(vf);
vf->vf_ops->post_vsi_rebuild(vf);
}
/** * ice_is_any_vf_in_unicast_promisc - check if any VF(s) * are in unicast promiscuous mode * @pf: PF structure for accessing VF(s) * * Return false if no VF(s) are in unicast promiscuous mode, * else return true
*/ bool ice_is_any_vf_in_unicast_promisc(struct ice_pf *pf)
{ bool is_vf_promisc = false; struct ice_vf *vf; unsignedint bkt;
rcu_read_lock();
ice_for_each_vf_rcu(pf, bkt, vf) { /* found a VF that has promiscuous mode configured */ if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states)) {
is_vf_promisc = true; break;
}
}
rcu_read_unlock();
return is_vf_promisc;
}
/** * ice_vf_get_promisc_masks - Calculate masks for promiscuous modes * @vf: the VF pointer * @vsi: the VSI to configure * @ucast_m: promiscuous mask to apply to unicast * @mcast_m: promiscuous mask to apply to multicast * * Decide which mask should be used for unicast and multicast filter, * based on presence of VLANs
*/ void
ice_vf_get_promisc_masks(struct ice_vf *vf, struct ice_vsi *vsi,
u8 *ucast_m, u8 *mcast_m)
{ if (ice_vf_is_port_vlan_ena(vf) ||
ice_vsi_has_non_zero_vlans(vsi)) {
*mcast_m = ICE_MCAST_VLAN_PROMISC_BITS;
*ucast_m = ICE_UCAST_VLAN_PROMISC_BITS;
} else {
*mcast_m = ICE_MCAST_PROMISC_BITS;
*ucast_m = ICE_UCAST_PROMISC_BITS;
}
}
/** * ice_vf_clear_all_promisc_modes - Clear promisc/allmulticast on VF VSI * @vf: the VF pointer * @vsi: the VSI to configure * * Clear all promiscuous/allmulticast filters for a VF
*/ staticint
ice_vf_clear_all_promisc_modes(struct ice_vf *vf, struct ice_vsi *vsi)
{ struct ice_pf *pf = vf->pf;
u8 ucast_m, mcast_m; int ret = 0;
ice_vf_get_promisc_masks(vf, vsi, &ucast_m, &mcast_m); if (test_bit(ICE_VF_STATE_UC_PROMISC, vf->vf_states)) { if (!test_bit(ICE_FLAG_VF_TRUE_PROMISC_ENA, pf->flags)) { if (ice_is_dflt_vsi_in_use(vsi->port_info))
ret = ice_clear_dflt_vsi(vsi);
} else {
ret = ice_vf_clear_vsi_promisc(vf, vsi, ucast_m);
}
/** * ice_vf_set_vsi_promisc - Enable promiscuous mode for a VF VSI * @vf: the VF to configure * @vsi: the VF's VSI * @promisc_m: the promiscuous mode to enable
*/ int
ice_vf_set_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m)
{ struct ice_hw *hw = &vsi->back->hw; int status;
if (ice_vf_is_port_vlan_ena(vf))
status = ice_fltr_set_vsi_promisc(hw, vsi->idx, promisc_m,
ice_vf_get_port_vlan_id(vf)); elseif (ice_vsi_has_non_zero_vlans(vsi))
status = ice_fltr_set_vlan_vsi_promisc(hw, vsi, promisc_m); else
status = ice_fltr_set_vsi_promisc(hw, vsi->idx, promisc_m, 0);
if (status && status != -EEXIST) {
dev_err(ice_pf_to_dev(vsi->back), "enable Tx/Rx filter promiscuous mode on VF-%u failed, error: %d\n",
vf->vf_id, status); return status;
}
return 0;
}
/** * ice_vf_clear_vsi_promisc - Disable promiscuous mode for a VF VSI * @vf: the VF to configure * @vsi: the VF's VSI * @promisc_m: the promiscuous mode to disable
*/ int
ice_vf_clear_vsi_promisc(struct ice_vf *vf, struct ice_vsi *vsi, u8 promisc_m)
{ struct ice_hw *hw = &vsi->back->hw; int status;
if (ice_vf_is_port_vlan_ena(vf))
status = ice_fltr_clear_vsi_promisc(hw, vsi->idx, promisc_m,
ice_vf_get_port_vlan_id(vf)); elseif (ice_vsi_has_non_zero_vlans(vsi))
status = ice_fltr_clear_vlan_vsi_promisc(hw, vsi, promisc_m); else
status = ice_fltr_clear_vsi_promisc(hw, vsi->idx, promisc_m, 0);
if (status && status != -ENOENT) {
dev_err(ice_pf_to_dev(vsi->back), "disable Tx/Rx filter promiscuous mode on VF-%u failed, error: %d\n",
vf->vf_id, status); return status;
}
return 0;
}
/** * ice_reset_vf_mbx_cnt - reset VF mailbox message count * @vf: pointer to the VF structure * * This function clears the VF mailbox message count, and should be called on * VF reset.
*/ staticvoid ice_reset_vf_mbx_cnt(struct ice_vf *vf)
{ struct ice_pf *pf = vf->pf;
if (ice_is_feature_supported(pf, ICE_F_MBX_LIMIT))
ice_mbx_vf_clear_cnt_e830(&pf->hw, vf->vf_id); else
ice_mbx_clear_malvf(&vf->mbx_info);
}
/** * ice_reset_all_vfs - reset all allocated VFs in one go * @pf: pointer to the PF structure * * Reset all VFs at once, in response to a PF or other device reset. * * 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.
*/ void ice_reset_all_vfs(struct ice_pf *pf)
{ struct device *dev = ice_pf_to_dev(pf); struct ice_hw *hw = &pf->hw; struct ice_vf *vf; unsignedint bkt;
/* If we don't have any VFs, then there is nothing to reset */ if (!ice_has_vfs(pf)) return;
mutex_lock(&pf->vfs.table_lock);
/* clear all malicious info if the VFs are getting reset */
ice_for_each_vf(pf, bkt, vf)
ice_reset_vf_mbx_cnt(vf);
/* If VFs have been disabled, there is no need to reset */ if (test_and_set_bit(ICE_VF_DIS, pf->state)) {
mutex_unlock(&pf->vfs.table_lock); return;
}
/* Begin reset on all VFs at once */
ice_for_each_vf(pf, bkt, vf)
ice_trigger_vf_reset(vf, true, true);
/* HW requires some time to make sure it can flush the FIFO for a VF * when it resets it. Now that we've triggered all of the VFs, iterate * the table again and wait for each VF to complete.
*/
ice_for_each_vf(pf, bkt, vf) { if (!vf->vf_ops->poll_reset_status(vf)) { /* Display a warning if at least one VF didn't manage * to reset in time, but continue on with the * operation.
*/
dev_warn(dev, "VF %u reset check timeout\n", vf->vf_id); break;
}
}
/* free VF resources to begin resetting the VSI state */
ice_for_each_vf(pf, bkt, vf) {
mutex_lock(&vf->cfg_lock);
ice_vf_fdir_exit(vf);
ice_vf_fdir_init(vf); /* clean VF control VSI when resetting VFs since it should be * setup only when VF creates its first FDIR rule.
*/ if (vf->ctrl_vsi_idx != ICE_NO_VSI)
ice_vf_ctrl_invalidate_vsi(vf);
/** * ice_notify_vf_reset - Notify VF of a reset event * @vf: pointer to the VF structure
*/ staticvoid ice_notify_vf_reset(struct ice_vf *vf)
{ struct ice_hw *hw = &vf->pf->hw; struct virtchnl_pf_event pfe;
/* 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;
/** * ice_reset_vf - Reset a particular VF * @vf: pointer to the VF structure * @flags: flags controlling behavior of the reset * * Flags: * ICE_VF_RESET_VFLR - Indicates a reset is due to VFLR event * ICE_VF_RESET_NOTIFY - Send VF a notification prior to reset * ICE_VF_RESET_LOCK - Acquire VF cfg_lock before resetting * * Returns 0 if the VF is currently in reset, if resets are disabled, or if * the VF resets successfully. Returns an error code if the VF fails to * rebuild.
*/ int ice_reset_vf(struct ice_vf *vf, u32 flags)
{ struct ice_pf *pf = vf->pf; struct ice_vsi *vsi; struct device *dev; int err = 0;
u8 act_prt; bool rsd;
dev = ice_pf_to_dev(pf);
if (flags & ICE_VF_RESET_NOTIFY)
ice_notify_vf_reset(vf);
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 0;
}
if (flags & ICE_VF_RESET_LOCK)
mutex_lock(&vf->cfg_lock); else
lockdep_assert_held(&vf->cfg_lock);
if (ice_is_vf_disabled(vf)) {
vsi = ice_get_vf_vsi(vf); if (!vsi) {
dev_dbg(dev, "VF is already removed\n");
err = -EINVAL; goto out_unlock;
}
ice_vsi_stop_lan_tx_rings(vsi, ICE_NO_RESET, vf->vf_id);
if (ice_vsi_is_rx_queue_active(vsi))
ice_vsi_stop_all_rx_rings(vsi);
dev_dbg(dev, "VF is already disabled, there is no need for resetting it, telling VM, all is fine %d\n",
vf->vf_id); goto out_unlock;
}
/* Set VF disable bit state here, before triggering reset */
set_bit(ICE_VF_STATE_DIS, vf->vf_states);
ice_trigger_vf_reset(vf, flags & ICE_VF_RESET_VFLR, false);
vsi = ice_get_vf_vsi(vf); if (WARN_ON(!vsi)) {
err = -EIO; goto out_unlock;
}
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, vf->vf_ops->reset_type, vf->vf_id, NULL);
/* poll VPGEN_VFRSTAT reg to make sure * that reset is complete
*/
rsd = vf->vf_ops->poll_reset_status(vf);
/* 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
*/
ice_vf_clear_all_promisc_modes(vf, vsi);
ice_vf_fdir_exit(vf);
ice_vf_fdir_init(vf); /* clean VF control VSI when resetting VF since it should be setup * only when VF creates its first FDIR rule.
*/ if (vf->ctrl_vsi_idx != ICE_NO_VSI)
ice_vf_ctrl_vsi_release(vf);
ice_vf_pre_vsi_rebuild(vf);
if (ice_vf_reconfig_vsi(vf)) {
dev_err(dev, "Failed to release and setup the VF%u's VSI\n",
vf->vf_id);
err = -EFAULT; goto out_unlock;
}
ice_vf_post_vsi_rebuild(vf);
vsi = ice_get_vf_vsi(vf); if (WARN_ON(!vsi)) {
err = -EINVAL; goto out_unlock;
}
ice_eswitch_update_repr(&vf->repr_id, vsi);
/* if the VF has been reset allow it to come up again */
ice_reset_vf_mbx_cnt(vf);
if (flags & ICE_VF_RESET_LOCK)
mutex_unlock(&vf->cfg_lock);
return err;
}
/** * ice_set_vf_state_dis - Set VF state to disabled * @vf: pointer to the VF structure
*/ void ice_set_vf_state_dis(struct ice_vf *vf)
{
ice_set_vf_state_qs_dis(vf);
vf->vf_ops->clear_reset_state(vf);
}
/* Private functions only accessed from other virtualization files */
/** * ice_initialize_vf_entry - Initialize a VF entry * @vf: pointer to the VF structure
*/ void ice_initialize_vf_entry(struct ice_vf *vf)
{ struct ice_pf *pf = vf->pf; struct ice_vfs *vfs;
/* set default number of MSI-X */
vf->num_msix = vfs->num_msix_per;
vf->num_vf_qs = vfs->num_qps_per;
/* set default RSS hash configuration */
vf->rss_hashcfg = ICE_DEFAULT_RSS_HASHCFG;
/* ctrl_vsi_idx will be set to a valid value only when iAVF * creates its first fdir rule.
*/
ice_vf_ctrl_invalidate_vsi(vf);
ice_vf_fdir_init(vf);
/* Initialize mailbox info for this VF */ if (ice_is_feature_supported(pf, ICE_F_MBX_LIMIT))
ice_mbx_vf_clear_cnt_e830(&pf->hw, vf->vf_id); else
ice_mbx_init_vf_info(&pf->hw, &vf->mbx_info);
/** * ice_err_to_virt_err - translate errors for VF return code * @err: error return code
*/ enum virtchnl_status_code ice_err_to_virt_err(int err)
{ switch (err) { case 0: return VIRTCHNL_STATUS_SUCCESS; case -EINVAL: case -ENODEV: return VIRTCHNL_STATUS_ERR_PARAM; case -ENOMEM: return VIRTCHNL_STATUS_ERR_NO_MEMORY; case -EALREADY: case -EBUSY: case -EIO: case -ENOSPC: return VIRTCHNL_STATUS_ERR_ADMIN_QUEUE_ERROR; default: return VIRTCHNL_STATUS_ERR_NOT_SUPPORTED;
}
}
/** * ice_check_vf_init - helper to check if VF init complete * @vf: the pointer to the VF to check
*/ int ice_check_vf_init(struct ice_vf *vf)
{ struct ice_pf *pf = vf->pf;
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_vf_get_port_info - Get the VF's port info structure * @vf: VF used to get the port info structure for
*/ struct ice_port_info *ice_vf_get_port_info(struct ice_vf *vf)
{ return vf->pf->hw.port_info;
}
/** * ice_cfg_mac_antispoof - Configure MAC antispoof checking behavior * @vsi: the VSI to configure * @enable: whether to enable or disable the spoof checking * * Configure a VSI to enable (or disable) spoof checking behavior.
*/ staticint ice_cfg_mac_antispoof(struct ice_vsi *vsi, bool enable)
{ struct ice_vsi_ctx *ctx; int err;
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM;
if (enable)
ctx->info.sec_flags |= ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF; else
ctx->info.sec_flags &= ~ICE_AQ_VSI_SEC_FLAG_ENA_MAC_ANTI_SPOOF;
err = ice_update_vsi(&vsi->back->hw, vsi->idx, ctx, NULL); if (err)
dev_err(ice_pf_to_dev(vsi->back), "Failed to configure Tx MAC anti-spoof %s for VSI %d, error %d\n",
enable ? "ON" : "OFF", vsi->vsi_num, err); else
vsi->info.sec_flags = ctx->info.sec_flags;
kfree(ctx);
return err;
}
/** * ice_vsi_ena_spoofchk - enable Tx spoof checking for this VSI * @vsi: VSI to enable Tx spoof checking for
*/ staticint ice_vsi_ena_spoofchk(struct ice_vsi *vsi)
{ struct ice_vsi_vlan_ops *vlan_ops; int err = 0;
vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);
/* Allow VF with VLAN 0 only to send all tagged traffic */ if (vsi->type != ICE_VSI_VF || ice_vsi_has_non_zero_vlans(vsi)) {
err = vlan_ops->ena_tx_filtering(vsi); if (err) return err;
}
return ice_cfg_mac_antispoof(vsi, true);
}
/** * ice_vsi_dis_spoofchk - disable Tx spoof checking for this VSI * @vsi: VSI to disable Tx spoof checking for
*/ staticint ice_vsi_dis_spoofchk(struct ice_vsi *vsi)
{ struct ice_vsi_vlan_ops *vlan_ops; int err;
vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);
err = vlan_ops->dis_tx_filtering(vsi); if (err) return err;
return ice_cfg_mac_antispoof(vsi, false);
}
/** * ice_vsi_apply_spoofchk - Apply Tx spoof checking setting to a VSI * @vsi: VSI associated to the VF * @enable: whether to enable or disable the spoof checking
*/ int ice_vsi_apply_spoofchk(struct ice_vsi *vsi, bool enable)
{ int err;
if (enable)
err = ice_vsi_ena_spoofchk(vsi); else
err = ice_vsi_dis_spoofchk(vsi);
return err;
}
/** * ice_is_vf_trusted * @vf: pointer to the VF info
*/ bool ice_is_vf_trusted(struct ice_vf *vf)
{ return test_bit(ICE_VIRTCHNL_VF_CAP_PRIVILEGE, &vf->vf_caps);
}
/** * 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
*/ 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
*/ bool ice_is_vf_link_up(struct ice_vf *vf)
{ struct ice_port_info *pi = ice_vf_get_port_info(vf);
/** * ice_vf_ctrl_invalidate_vsi - invalidate ctrl_vsi_idx to remove VSI access * @vf: VF that control VSI is being invalidated on
*/ void ice_vf_ctrl_invalidate_vsi(struct ice_vf *vf)
{
vf->ctrl_vsi_idx = ICE_NO_VSI;
}
/** * ice_vf_ctrl_vsi_release - invalidate the VF's control VSI after freeing it * @vf: VF that control VSI is being released on
*/ void ice_vf_ctrl_vsi_release(struct ice_vf *vf)
{
ice_vsi_release(vf->pf->vsi[vf->ctrl_vsi_idx]);
ice_vf_ctrl_invalidate_vsi(vf);
}
/** * ice_vf_ctrl_vsi_setup - Set up a VF control VSI * @vf: VF to setup control VSI for * * Returns pointer to the successfully allocated VSI struct on success, * otherwise returns NULL on failure.
*/ struct ice_vsi *ice_vf_ctrl_vsi_setup(struct ice_vf *vf)
{ struct ice_vsi_cfg_params params = {}; struct ice_pf *pf = vf->pf; struct ice_vsi *vsi;
vsi = ice_vsi_setup(pf, ¶ms); if (!vsi) {
dev_err(ice_pf_to_dev(pf), "Failed to create VF control VSI\n");
ice_vf_ctrl_invalidate_vsi(vf);
}
return vsi;
}
/** * ice_vf_init_host_cfg - Initialize host admin configuration * @vf: VF to initialize * @vsi: the VSI created at initialization * * Initialize the VF host configuration. Called during VF creation to setup * VLAN 0, add the VF VSI broadcast filter, and setup spoof checking. It * should only be called during VF creation.
*/ int ice_vf_init_host_cfg(struct ice_vf *vf, struct ice_vsi *vsi)
{ struct ice_vsi_vlan_ops *vlan_ops; struct ice_pf *pf = vf->pf;
u8 broadcast[ETH_ALEN]; struct device *dev; int err;
dev = ice_pf_to_dev(pf);
err = ice_vsi_add_vlan_zero(vsi); if (err) {
dev_warn(dev, "Failed to add VLAN 0 filter for VF %d\n",
vf->vf_id); return err;
}
vlan_ops = ice_get_compat_vsi_vlan_ops(vsi);
err = vlan_ops->ena_rx_filtering(vsi); if (err) {
dev_warn(dev, "Failed to enable Rx VLAN filtering for VF %d\n",
vf->vf_id); return err;
}
eth_broadcast_addr(broadcast);
err = ice_fltr_add_mac(vsi, broadcast, ICE_FWD_TO_VSI); if (err) {
dev_err(dev, "Failed to add broadcast MAC filter for VF %d, status %d\n",
vf->vf_id, err); return err;
}
vf->num_mac = 1;
err = ice_vsi_apply_spoofchk(vsi, vf->spoofchk); if (err) {
dev_warn(dev, "Failed to initialize spoofchk setting for VF %d\n",
vf->vf_id); return err;
}
return 0;
}
/** * ice_vf_invalidate_vsi - invalidate vsi_idx to remove VSI access * @vf: VF to remove access to VSI for
*/ void ice_vf_invalidate_vsi(struct ice_vf *vf)
{
vf->lan_vsi_idx = ICE_NO_VSI;
}
/** * ice_vf_vsi_release - Release the VF VSI and invalidate indexes * @vf: pointer to the VF structure * * Release the VF associated with this VSI and then invalidate the VSI * indexes.
*/ void ice_vf_vsi_release(struct ice_vf *vf)
{ struct ice_vsi *vsi = ice_get_vf_vsi(vf);
/** * ice_get_vf_ctrl_vsi - Get first VF control VSI pointer * @pf: the PF private structure * @vsi: pointer to the VSI * * Return first found VF control VSI other than the vsi * passed by parameter. This function is used to determine * whether new resources have to be allocated for control VSI * or they can be shared with existing one. * * Return found VF control VSI pointer other itself. Return * NULL Otherwise. *
*/ struct ice_vsi *ice_get_vf_ctrl_vsi(struct ice_pf *pf, struct ice_vsi *vsi)
{ struct ice_vsi *ctrl_vsi = NULL; struct ice_vf *vf; unsignedint bkt;
/** * ice_vf_update_mac_lldp_num - update the VF's number of LLDP addresses * @vf: a VF to add the address to * @vsi: the corresponding VSI * @incr: is the rule added or removed
*/ void ice_vf_update_mac_lldp_num(struct ice_vf *vf, struct ice_vsi *vsi, bool incr)
{ bool lldp_by_fw = test_bit(ICE_FLAG_FW_LLDP_AGENT, vsi->back->flags); bool was_ena = ice_vf_is_lldp_ena(vf) && !lldp_by_fw; bool is_ena;
if (WARN_ON(!vsi)) {
vf->num_mac_lldp = 0; return;
}
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