From 01a69402cf9d38ff180345d55c2ee51c7e89fbc7 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 18 May 2024 20:50:03 +0200 Subject: Adding upstream version 6.8.9. Signed-off-by: Daniel Baumann --- drivers/net/ethernet/intel/ice/ice_eswitch.c | 568 +++++++++++++++------------ 1 file changed, 310 insertions(+), 258 deletions(-) (limited to 'drivers/net/ethernet/intel/ice/ice_eswitch.c') diff --git a/drivers/net/ethernet/intel/ice/ice_eswitch.c b/drivers/net/ethernet/intel/ice/ice_eswitch.c index a655d499ab..9069725c71 100644 --- a/drivers/net/ethernet/intel/ice/ice_eswitch.c +++ b/drivers/net/ethernet/intel/ice/ice_eswitch.c @@ -11,17 +11,34 @@ #include "ice_tc_lib.h" /** - * ice_eswitch_add_vf_sp_rule - add adv rule with VF's VSI index + * ice_eswitch_del_sp_rules - delete adv rules added on PRs + * @pf: pointer to the PF struct + * + * Delete all advanced rules that were used to forward packets with the + * device's VSI index to the corresponding eswitch ctrl VSI queue. + */ +static void ice_eswitch_del_sp_rules(struct ice_pf *pf) +{ + struct ice_repr *repr; + unsigned long id; + + xa_for_each(&pf->eswitch.reprs, id, repr) { + if (repr->sp_rule.rid) + ice_rem_adv_rule_by_id(&pf->hw, &repr->sp_rule); + } +} + +/** + * ice_eswitch_add_sp_rule - add adv rule with device's VSI index * @pf: pointer to PF struct - * @vf: pointer to VF struct + * @repr: pointer to the repr struct * * This function adds advanced rule that forwards packets with - * VF's VSI index to the corresponding switchdev ctrl VSI queue. + * device's VSI index to the corresponding eswitch ctrl VSI queue. */ -static int -ice_eswitch_add_vf_sp_rule(struct ice_pf *pf, struct ice_vf *vf) +static int ice_eswitch_add_sp_rule(struct ice_pf *pf, struct ice_repr *repr) { - struct ice_vsi *ctrl_vsi = pf->switchdev.control_vsi; + struct ice_vsi *ctrl_vsi = pf->eswitch.control_vsi; struct ice_adv_rule_info rule_info = { 0 }; struct ice_adv_lkup_elem *list; struct ice_hw *hw = &pf->hw; @@ -38,39 +55,42 @@ ice_eswitch_add_vf_sp_rule(struct ice_pf *pf, struct ice_vf *vf) rule_info.sw_act.vsi_handle = ctrl_vsi->idx; rule_info.sw_act.fltr_act = ICE_FWD_TO_Q; rule_info.sw_act.fwd_id.q_id = hw->func_caps.common_cap.rxq_first_id + - ctrl_vsi->rxq_map[vf->vf_id]; + ctrl_vsi->rxq_map[repr->q_id]; rule_info.flags_info.act |= ICE_SINGLE_ACT_LB_ENABLE; rule_info.flags_info.act_valid = true; rule_info.tun_type = ICE_SW_TUN_AND_NON_TUN; - rule_info.src_vsi = vf->lan_vsi_idx; + rule_info.src_vsi = repr->src_vsi->idx; err = ice_add_adv_rule(hw, list, lkups_cnt, &rule_info, - &vf->repr->sp_rule); + &repr->sp_rule); if (err) - dev_err(ice_pf_to_dev(pf), "Unable to add VF slow-path rule in switchdev mode for VF %d", - vf->vf_id); + dev_err(ice_pf_to_dev(pf), "Unable to add slow-path rule for eswitch for PR %d", + repr->id); kfree(list); return err; } -/** - * ice_eswitch_del_vf_sp_rule - delete adv rule with VF's VSI index - * @vf: pointer to the VF struct - * - * Delete the advanced rule that was used to forward packets with the VF's VSI - * index to the corresponding switchdev ctrl VSI queue. - */ -static void ice_eswitch_del_vf_sp_rule(struct ice_vf *vf) +static int +ice_eswitch_add_sp_rules(struct ice_pf *pf) { - if (!vf->repr) - return; + struct ice_repr *repr; + unsigned long id; + int err; + + xa_for_each(&pf->eswitch.reprs, id, repr) { + err = ice_eswitch_add_sp_rule(pf, repr); + if (err) { + ice_eswitch_del_sp_rules(pf); + return err; + } + } - ice_rem_adv_rule_by_id(&vf->pf->hw, &vf->repr->sp_rule); + return 0; } /** - * ice_eswitch_setup_env - configure switchdev HW filters + * ice_eswitch_setup_env - configure eswitch HW filters * @pf: pointer to PF struct * * This function adds HW filters configuration specific for switchdev @@ -78,18 +98,18 @@ static void ice_eswitch_del_vf_sp_rule(struct ice_vf *vf) */ static int ice_eswitch_setup_env(struct ice_pf *pf) { - struct ice_vsi *uplink_vsi = pf->switchdev.uplink_vsi; - struct net_device *uplink_netdev = uplink_vsi->netdev; - struct ice_vsi *ctrl_vsi = pf->switchdev.control_vsi; + struct ice_vsi *uplink_vsi = pf->eswitch.uplink_vsi; + struct ice_vsi *ctrl_vsi = pf->eswitch.control_vsi; + struct net_device *netdev = uplink_vsi->netdev; struct ice_vsi_vlan_ops *vlan_ops; bool rule_added = false; ice_remove_vsi_fltr(&pf->hw, uplink_vsi->idx); - netif_addr_lock_bh(uplink_netdev); - __dev_uc_unsync(uplink_netdev, NULL); - __dev_mc_unsync(uplink_netdev, NULL); - netif_addr_unlock_bh(uplink_netdev); + netif_addr_lock_bh(netdev); + __dev_uc_unsync(netdev, NULL); + __dev_mc_unsync(netdev, NULL); + netif_addr_unlock_bh(netdev); if (ice_vsi_add_vlan_zero(uplink_vsi)) goto err_def_rx; @@ -132,19 +152,20 @@ err_def_rx: } /** - * ice_eswitch_remap_rings_to_vectors - reconfigure rings of switchdev ctrl VSI - * @pf: pointer to PF struct + * ice_eswitch_remap_rings_to_vectors - reconfigure rings of eswitch ctrl VSI + * @eswitch: pointer to eswitch struct * - * In switchdev number of allocated Tx/Rx rings is equal. + * In eswitch number of allocated Tx/Rx rings is equal. * * This function fills q_vectors structures associated with representor and * move each ring pairs to port representor netdevs. Each port representor * will have dedicated 1 Tx/Rx ring pair, so number of rings pair is equal to * number of VFs. */ -static void ice_eswitch_remap_rings_to_vectors(struct ice_pf *pf) +static void ice_eswitch_remap_rings_to_vectors(struct ice_eswitch *eswitch) { - struct ice_vsi *vsi = pf->switchdev.control_vsi; + struct ice_vsi *vsi = eswitch->control_vsi; + unsigned long repr_id = 0; int q_id; ice_for_each_txq(vsi, q_id) { @@ -152,13 +173,14 @@ static void ice_eswitch_remap_rings_to_vectors(struct ice_pf *pf) struct ice_tx_ring *tx_ring; struct ice_rx_ring *rx_ring; struct ice_repr *repr; - struct ice_vf *vf; - vf = ice_get_vf_by_id(pf, q_id); - if (WARN_ON(!vf)) - continue; + repr = xa_find(&eswitch->reprs, &repr_id, U32_MAX, + XA_PRESENT); + if (!repr) + break; - repr = vf->repr; + repr_id += 1; + repr->q_id = q_id; q_vector = repr->q_vector; tx_ring = vsi->tx_rings[q_id]; rx_ring = vsi->rx_rings[q_id]; @@ -181,136 +203,96 @@ static void ice_eswitch_remap_rings_to_vectors(struct ice_pf *pf) rx_ring->q_vector = q_vector; rx_ring->next = NULL; rx_ring->netdev = repr->netdev; - - ice_put_vf(vf); } } /** - * ice_eswitch_release_reprs - clear PR VSIs configuration + * ice_eswitch_release_repr - clear PR VSI configuration * @pf: poiner to PF struct - * @ctrl_vsi: pointer to switchdev control VSI + * @repr: pointer to PR */ static void -ice_eswitch_release_reprs(struct ice_pf *pf, struct ice_vsi *ctrl_vsi) +ice_eswitch_release_repr(struct ice_pf *pf, struct ice_repr *repr) { - struct ice_vf *vf; - unsigned int bkt; + struct ice_vsi *vsi = repr->src_vsi; - lockdep_assert_held(&pf->vfs.table_lock); - - ice_for_each_vf(pf, bkt, vf) { - struct ice_vsi *vsi = vf->repr->src_vsi; - - /* Skip VFs that aren't configured */ - if (!vf->repr->dst) - continue; + /* Skip representors that aren't configured */ + if (!repr->dst) + return; - ice_vsi_update_security(vsi, ice_vsi_ctx_set_antispoof); - metadata_dst_free(vf->repr->dst); - vf->repr->dst = NULL; - ice_eswitch_del_vf_sp_rule(vf); - ice_fltr_add_mac_and_broadcast(vsi, vf->hw_lan_addr, - ICE_FWD_TO_VSI); + ice_vsi_update_security(vsi, ice_vsi_ctx_set_antispoof); + metadata_dst_free(repr->dst); + repr->dst = NULL; + ice_fltr_add_mac_and_broadcast(vsi, repr->parent_mac, + ICE_FWD_TO_VSI); - netif_napi_del(&vf->repr->q_vector->napi); - } + netif_napi_del(&repr->q_vector->napi); } /** - * ice_eswitch_setup_reprs - configure port reprs to run in switchdev mode + * ice_eswitch_setup_repr - configure PR to run in switchdev mode * @pf: pointer to PF struct + * @repr: pointer to PR struct */ -static int ice_eswitch_setup_reprs(struct ice_pf *pf) +static int ice_eswitch_setup_repr(struct ice_pf *pf, struct ice_repr *repr) { - struct ice_vsi *ctrl_vsi = pf->switchdev.control_vsi; - int max_vsi_num = 0; - struct ice_vf *vf; - unsigned int bkt; - - lockdep_assert_held(&pf->vfs.table_lock); - - ice_for_each_vf(pf, bkt, vf) { - struct ice_vsi *vsi = vf->repr->src_vsi; - - ice_remove_vsi_fltr(&pf->hw, vsi->idx); - vf->repr->dst = metadata_dst_alloc(0, METADATA_HW_PORT_MUX, - GFP_KERNEL); - if (!vf->repr->dst) { - ice_fltr_add_mac_and_broadcast(vsi, vf->hw_lan_addr, - ICE_FWD_TO_VSI); - goto err; - } + struct ice_vsi *ctrl_vsi = pf->eswitch.control_vsi; + struct ice_vsi *vsi = repr->src_vsi; + struct metadata_dst *dst; - if (ice_eswitch_add_vf_sp_rule(pf, vf)) { - ice_fltr_add_mac_and_broadcast(vsi, vf->hw_lan_addr, - ICE_FWD_TO_VSI); - goto err; - } + ice_remove_vsi_fltr(&pf->hw, vsi->idx); + repr->dst = metadata_dst_alloc(0, METADATA_HW_PORT_MUX, + GFP_KERNEL); + if (!repr->dst) + goto err_add_mac_fltr; - if (ice_vsi_update_security(vsi, ice_vsi_ctx_clear_antispoof)) { - ice_fltr_add_mac_and_broadcast(vsi, vf->hw_lan_addr, - ICE_FWD_TO_VSI); - ice_eswitch_del_vf_sp_rule(vf); - metadata_dst_free(vf->repr->dst); - vf->repr->dst = NULL; - goto err; - } + if (ice_vsi_update_security(vsi, ice_vsi_ctx_clear_antispoof)) + goto err_dst_free; - if (ice_vsi_add_vlan_zero(vsi)) { - ice_fltr_add_mac_and_broadcast(vsi, vf->hw_lan_addr, - ICE_FWD_TO_VSI); - ice_eswitch_del_vf_sp_rule(vf); - metadata_dst_free(vf->repr->dst); - vf->repr->dst = NULL; - ice_vsi_update_security(vsi, ice_vsi_ctx_set_antispoof); - goto err; - } - - if (max_vsi_num < vsi->vsi_num) - max_vsi_num = vsi->vsi_num; + if (ice_vsi_add_vlan_zero(vsi)) + goto err_update_security; - netif_napi_add(vf->repr->netdev, &vf->repr->q_vector->napi, - ice_napi_poll); + netif_napi_add(repr->netdev, &repr->q_vector->napi, + ice_napi_poll); - netif_keep_dst(vf->repr->netdev); - } + netif_keep_dst(repr->netdev); - ice_for_each_vf(pf, bkt, vf) { - struct ice_repr *repr = vf->repr; - struct ice_vsi *vsi = repr->src_vsi; - struct metadata_dst *dst; - - dst = repr->dst; - dst->u.port_info.port_id = vsi->vsi_num; - dst->u.port_info.lower_dev = repr->netdev; - ice_repr_set_traffic_vsi(repr, ctrl_vsi); - } + dst = repr->dst; + dst->u.port_info.port_id = vsi->vsi_num; + dst->u.port_info.lower_dev = repr->netdev; + ice_repr_set_traffic_vsi(repr, ctrl_vsi); return 0; -err: - ice_eswitch_release_reprs(pf, ctrl_vsi); +err_update_security: + ice_vsi_update_security(vsi, ice_vsi_ctx_set_antispoof); +err_dst_free: + metadata_dst_free(repr->dst); + repr->dst = NULL; +err_add_mac_fltr: + ice_fltr_add_mac_and_broadcast(vsi, repr->parent_mac, ICE_FWD_TO_VSI); return -ENODEV; } /** - * ice_eswitch_update_repr - reconfigure VF port representor - * @vsi: VF VSI for which port representor is configured + * ice_eswitch_update_repr - reconfigure port representor + * @repr_id: representor ID + * @vsi: VSI for which port representor is configured */ -void ice_eswitch_update_repr(struct ice_vsi *vsi) +void ice_eswitch_update_repr(unsigned long repr_id, struct ice_vsi *vsi) { struct ice_pf *pf = vsi->back; struct ice_repr *repr; - struct ice_vf *vf; int ret; if (!ice_is_switchdev_running(pf)) return; - vf = vsi->vf; - repr = vf->repr; + repr = xa_load(&pf->eswitch.reprs, repr_id); + if (!repr) + return; + repr->src_vsi = vsi; repr->dst->u.port_info.port_id = vsi->vsi_num; @@ -319,9 +301,10 @@ void ice_eswitch_update_repr(struct ice_vsi *vsi) ret = ice_vsi_update_security(vsi, ice_vsi_ctx_clear_antispoof); if (ret) { - ice_fltr_add_mac_and_broadcast(vsi, vf->hw_lan_addr, ICE_FWD_TO_VSI); - dev_err(ice_pf_to_dev(pf), "Failed to update VF %d port representor", - vsi->vf->vf_id); + ice_fltr_add_mac_and_broadcast(vsi, repr->parent_mac, + ICE_FWD_TO_VSI); + dev_err(ice_pf_to_dev(pf), "Failed to update VSI of port representor %d", + repr->id); } } @@ -353,13 +336,13 @@ ice_eswitch_port_start_xmit(struct sk_buff *skb, struct net_device *netdev) skb_dst_drop(skb); dst_hold((struct dst_entry *)repr->dst); skb_dst_set(skb, (struct dst_entry *)repr->dst); - skb->queue_mapping = repr->vf->vf_id; + skb->queue_mapping = repr->q_id; return ice_start_xmit(skb, netdev); } /** - * ice_eswitch_set_target_vsi - set switchdev context in Tx context descriptor + * ice_eswitch_set_target_vsi - set eswitch context in Tx context descriptor * @skb: pointer to send buffer * @off: pointer to offload struct */ @@ -375,14 +358,14 @@ ice_eswitch_set_target_vsi(struct sk_buff *skb, off->cd_qw1 |= (cd_cmd | ICE_TX_DESC_DTYPE_CTX); } else { cd_cmd = ICE_TX_CTX_DESC_SWTCH_VSI << ICE_TXD_CTX_QW1_CMD_S; - dst_vsi = ((u64)dst->u.port_info.port_id << - ICE_TXD_CTX_QW1_VSI_S) & ICE_TXD_CTX_QW1_VSI_M; + dst_vsi = FIELD_PREP(ICE_TXD_CTX_QW1_VSI_M, + dst->u.port_info.port_id); off->cd_qw1 = cd_cmd | dst_vsi | ICE_TX_DESC_DTYPE_CTX; } } /** - * ice_eswitch_release_env - clear switchdev HW filters + * ice_eswitch_release_env - clear eswitch HW filters * @pf: pointer to PF struct * * This function removes HW filters configuration specific for switchdev @@ -390,8 +373,8 @@ ice_eswitch_set_target_vsi(struct sk_buff *skb, */ static void ice_eswitch_release_env(struct ice_pf *pf) { - struct ice_vsi *uplink_vsi = pf->switchdev.uplink_vsi; - struct ice_vsi *ctrl_vsi = pf->switchdev.control_vsi; + struct ice_vsi *uplink_vsi = pf->eswitch.uplink_vsi; + struct ice_vsi *ctrl_vsi = pf->eswitch.control_vsi; struct ice_vsi_vlan_ops *vlan_ops; vlan_ops = ice_get_compat_vsi_vlan_ops(uplink_vsi); @@ -407,7 +390,7 @@ static void ice_eswitch_release_env(struct ice_pf *pf) } /** - * ice_eswitch_vsi_setup - configure switchdev control VSI + * ice_eswitch_vsi_setup - configure eswitch control VSI * @pf: pointer to PF structure * @pi: pointer to port_info structure */ @@ -423,49 +406,30 @@ ice_eswitch_vsi_setup(struct ice_pf *pf, struct ice_port_info *pi) return ice_vsi_setup(pf, ¶ms); } -/** - * ice_eswitch_napi_del - remove NAPI handle for all port representors - * @pf: pointer to PF structure - */ -static void ice_eswitch_napi_del(struct ice_pf *pf) -{ - struct ice_vf *vf; - unsigned int bkt; - - lockdep_assert_held(&pf->vfs.table_lock); - - ice_for_each_vf(pf, bkt, vf) - netif_napi_del(&vf->repr->q_vector->napi); -} - /** * ice_eswitch_napi_enable - enable NAPI for all port representors - * @pf: pointer to PF structure + * @reprs: xarray of reprs */ -static void ice_eswitch_napi_enable(struct ice_pf *pf) +static void ice_eswitch_napi_enable(struct xarray *reprs) { - struct ice_vf *vf; - unsigned int bkt; - - lockdep_assert_held(&pf->vfs.table_lock); + struct ice_repr *repr; + unsigned long id; - ice_for_each_vf(pf, bkt, vf) - napi_enable(&vf->repr->q_vector->napi); + xa_for_each(reprs, id, repr) + napi_enable(&repr->q_vector->napi); } /** * ice_eswitch_napi_disable - disable NAPI for all port representors - * @pf: pointer to PF structure + * @reprs: xarray of reprs */ -static void ice_eswitch_napi_disable(struct ice_pf *pf) +static void ice_eswitch_napi_disable(struct xarray *reprs) { - struct ice_vf *vf; - unsigned int bkt; - - lockdep_assert_held(&pf->vfs.table_lock); + struct ice_repr *repr; + unsigned long id; - ice_for_each_vf(pf, bkt, vf) - napi_disable(&vf->repr->q_vector->napi); + xa_for_each(reprs, id, repr) + napi_disable(&repr->q_vector->napi); } /** @@ -486,39 +450,26 @@ static int ice_eswitch_enable_switchdev(struct ice_pf *pf) return -EINVAL; } - pf->switchdev.control_vsi = ice_eswitch_vsi_setup(pf, pf->hw.port_info); - if (!pf->switchdev.control_vsi) + pf->eswitch.control_vsi = ice_eswitch_vsi_setup(pf, pf->hw.port_info); + if (!pf->eswitch.control_vsi) return -ENODEV; - ctrl_vsi = pf->switchdev.control_vsi; - pf->switchdev.uplink_vsi = uplink_vsi; + ctrl_vsi = pf->eswitch.control_vsi; + /* cp VSI is createad with 1 queue as default */ + pf->eswitch.qs.value = 1; + pf->eswitch.uplink_vsi = uplink_vsi; if (ice_eswitch_setup_env(pf)) goto err_vsi; - if (ice_repr_add_for_all_vfs(pf)) - goto err_repr_add; - - if (ice_eswitch_setup_reprs(pf)) - goto err_setup_reprs; - - ice_eswitch_remap_rings_to_vectors(pf); - - if (ice_vsi_open(ctrl_vsi)) - goto err_setup_reprs; - if (ice_eswitch_br_offloads_init(pf)) goto err_br_offloads; - ice_eswitch_napi_enable(pf); + pf->eswitch.is_running = true; return 0; err_br_offloads: - ice_vsi_close(ctrl_vsi); -err_setup_reprs: - ice_repr_rem_from_all_vfs(pf); -err_repr_add: ice_eswitch_release_env(pf); err_vsi: ice_vsi_release(ctrl_vsi); @@ -526,19 +477,19 @@ err_vsi: } /** - * ice_eswitch_disable_switchdev - disable switchdev resources + * ice_eswitch_disable_switchdev - disable eswitch resources * @pf: pointer to PF structure */ static void ice_eswitch_disable_switchdev(struct ice_pf *pf) { - struct ice_vsi *ctrl_vsi = pf->switchdev.control_vsi; + struct ice_vsi *ctrl_vsi = pf->eswitch.control_vsi; - ice_eswitch_napi_disable(pf); ice_eswitch_br_offloads_deinit(pf); ice_eswitch_release_env(pf); - ice_eswitch_release_reprs(pf, ctrl_vsi); ice_vsi_release(ctrl_vsi); - ice_repr_rem_from_all_vfs(pf); + + pf->eswitch.is_running = false; + pf->eswitch.qs.is_reaching = false; } /** @@ -566,6 +517,7 @@ ice_eswitch_mode_set(struct devlink *devlink, u16 mode, case DEVLINK_ESWITCH_MODE_LEGACY: dev_info(ice_pf_to_dev(pf), "PF %d changed eswitch mode to legacy", pf->hw.pf_id); + xa_destroy(&pf->eswitch.reprs); NL_SET_ERR_MSG_MOD(extack, "Changed eswitch mode to legacy"); break; case DEVLINK_ESWITCH_MODE_SWITCHDEV: @@ -578,6 +530,7 @@ ice_eswitch_mode_set(struct devlink *devlink, u16 mode, dev_info(ice_pf_to_dev(pf), "PF %d changed eswitch mode to switchdev", pf->hw.pf_id); + xa_init_flags(&pf->eswitch.reprs, XA_FLAGS_ALLOC); NL_SET_ERR_MSG_MOD(extack, "Changed eswitch mode to switchdev"); break; } @@ -616,74 +569,168 @@ bool ice_is_eswitch_mode_switchdev(struct ice_pf *pf) } /** - * ice_eswitch_release - cleanup eswitch + * ice_eswitch_start_all_tx_queues - start Tx queues of all port representors * @pf: pointer to PF structure */ -void ice_eswitch_release(struct ice_pf *pf) +static void ice_eswitch_start_all_tx_queues(struct ice_pf *pf) { - if (pf->eswitch_mode == DEVLINK_ESWITCH_MODE_LEGACY) + struct ice_repr *repr; + unsigned long id; + + if (test_bit(ICE_DOWN, pf->state)) return; - ice_eswitch_disable_switchdev(pf); - pf->switchdev.is_running = false; + xa_for_each(&pf->eswitch.reprs, id, repr) + ice_repr_start_tx_queues(repr); } /** - * ice_eswitch_configure - configure eswitch + * ice_eswitch_stop_all_tx_queues - stop Tx queues of all port representors * @pf: pointer to PF structure */ -int ice_eswitch_configure(struct ice_pf *pf) +void ice_eswitch_stop_all_tx_queues(struct ice_pf *pf) { - int status; - - if (pf->eswitch_mode == DEVLINK_ESWITCH_MODE_LEGACY || pf->switchdev.is_running) - return 0; + struct ice_repr *repr; + unsigned long id; - status = ice_eswitch_enable_switchdev(pf); - if (status) - return status; + if (test_bit(ICE_DOWN, pf->state)) + return; - pf->switchdev.is_running = true; - return 0; + xa_for_each(&pf->eswitch.reprs, id, repr) + ice_repr_stop_tx_queues(repr); } -/** - * ice_eswitch_start_all_tx_queues - start Tx queues of all port representors - * @pf: pointer to PF structure - */ -static void ice_eswitch_start_all_tx_queues(struct ice_pf *pf) +static void ice_eswitch_stop_reprs(struct ice_pf *pf) { - struct ice_vf *vf; - unsigned int bkt; + ice_eswitch_del_sp_rules(pf); + ice_eswitch_stop_all_tx_queues(pf); + ice_eswitch_napi_disable(&pf->eswitch.reprs); +} - lockdep_assert_held(&pf->vfs.table_lock); +static void ice_eswitch_start_reprs(struct ice_pf *pf) +{ + ice_eswitch_napi_enable(&pf->eswitch.reprs); + ice_eswitch_start_all_tx_queues(pf); + ice_eswitch_add_sp_rules(pf); +} - if (test_bit(ICE_DOWN, pf->state)) - return; +static void +ice_eswitch_cp_change_queues(struct ice_eswitch *eswitch, int change) +{ + struct ice_vsi *cp = eswitch->control_vsi; + int queues = 0; + + if (eswitch->qs.is_reaching) { + if (eswitch->qs.to_reach >= eswitch->qs.value + change) { + queues = eswitch->qs.to_reach; + eswitch->qs.is_reaching = false; + } else { + queues = 0; + } + } else if ((change > 0 && cp->alloc_txq <= eswitch->qs.value) || + change < 0) { + queues = cp->alloc_txq + change; + } - ice_for_each_vf(pf, bkt, vf) { - if (vf->repr) - ice_repr_start_tx_queues(vf->repr); + if (queues) { + cp->req_txq = queues; + cp->req_rxq = queues; + ice_vsi_close(cp); + ice_vsi_rebuild(cp, ICE_VSI_FLAG_NO_INIT); + ice_vsi_open(cp); + } else if (!change) { + /* change == 0 means that VSI wasn't open, open it here */ + ice_vsi_open(cp); } + + eswitch->qs.value += change; + ice_eswitch_remap_rings_to_vectors(eswitch); } -/** - * ice_eswitch_stop_all_tx_queues - stop Tx queues of all port representors - * @pf: pointer to PF structure - */ -void ice_eswitch_stop_all_tx_queues(struct ice_pf *pf) +int +ice_eswitch_attach(struct ice_pf *pf, struct ice_vf *vf) { - struct ice_vf *vf; - unsigned int bkt; + struct ice_repr *repr; + int change = 1; + int err; - lockdep_assert_held(&pf->vfs.table_lock); + if (pf->eswitch_mode == DEVLINK_ESWITCH_MODE_LEGACY) + return 0; - if (test_bit(ICE_DOWN, pf->state)) + if (xa_empty(&pf->eswitch.reprs)) { + err = ice_eswitch_enable_switchdev(pf); + if (err) + return err; + /* Control plane VSI is created with 1 queue as default */ + pf->eswitch.qs.to_reach -= 1; + change = 0; + } + + ice_eswitch_stop_reprs(pf); + + repr = ice_repr_add_vf(vf); + if (IS_ERR(repr)) { + err = PTR_ERR(repr); + goto err_create_repr; + } + + err = ice_eswitch_setup_repr(pf, repr); + if (err) + goto err_setup_repr; + + err = xa_alloc(&pf->eswitch.reprs, &repr->id, repr, + XA_LIMIT(1, INT_MAX), GFP_KERNEL); + if (err) + goto err_xa_alloc; + + vf->repr_id = repr->id; + + ice_eswitch_cp_change_queues(&pf->eswitch, change); + ice_eswitch_start_reprs(pf); + + return 0; + +err_xa_alloc: + ice_eswitch_release_repr(pf, repr); +err_setup_repr: + ice_repr_rem_vf(repr); +err_create_repr: + if (xa_empty(&pf->eswitch.reprs)) + ice_eswitch_disable_switchdev(pf); + ice_eswitch_start_reprs(pf); + + return err; +} + +void ice_eswitch_detach(struct ice_pf *pf, struct ice_vf *vf) +{ + struct ice_repr *repr = xa_load(&pf->eswitch.reprs, vf->repr_id); + struct devlink *devlink = priv_to_devlink(pf); + + if (!repr) return; - ice_for_each_vf(pf, bkt, vf) { - if (vf->repr) - ice_repr_stop_tx_queues(vf->repr); + ice_eswitch_stop_reprs(pf); + xa_erase(&pf->eswitch.reprs, repr->id); + + if (xa_empty(&pf->eswitch.reprs)) + ice_eswitch_disable_switchdev(pf); + else + ice_eswitch_cp_change_queues(&pf->eswitch, -1); + + ice_eswitch_release_repr(pf, repr); + ice_repr_rem_vf(repr); + + if (xa_empty(&pf->eswitch.reprs)) { + /* since all port representors are destroyed, there is + * no point in keeping the nodes + */ + ice_devlink_rate_clear_tx_topology(ice_get_main_vsi(pf)); + devl_lock(devlink); + devl_rate_nodes_destroy(devlink); + devl_unlock(devlink); + } else { + ice_eswitch_start_reprs(pf); } } @@ -693,30 +740,35 @@ void ice_eswitch_stop_all_tx_queues(struct ice_pf *pf) */ int ice_eswitch_rebuild(struct ice_pf *pf) { - struct ice_vsi *ctrl_vsi = pf->switchdev.control_vsi; - int status; - - ice_eswitch_napi_disable(pf); - ice_eswitch_napi_del(pf); - - status = ice_eswitch_setup_env(pf); - if (status) - return status; + struct ice_repr *repr; + unsigned long id; + int err; - status = ice_eswitch_setup_reprs(pf); - if (status) - return status; + if (!ice_is_switchdev_running(pf)) + return 0; - ice_eswitch_remap_rings_to_vectors(pf); + err = ice_vsi_rebuild(pf->eswitch.control_vsi, ICE_VSI_FLAG_INIT); + if (err) + return err; - ice_replay_tc_fltrs(pf); + xa_for_each(&pf->eswitch.reprs, id, repr) + ice_eswitch_detach(pf, repr->vf); - status = ice_vsi_open(ctrl_vsi); - if (status) - return status; + return 0; +} - ice_eswitch_napi_enable(pf); - ice_eswitch_start_all_tx_queues(pf); +/** + * ice_eswitch_reserve_cp_queues - reserve control plane VSI queues + * @pf: pointer to PF structure + * @change: how many more (or less) queues is needed + * + * Remember to call ice_eswitch_attach/detach() the "change" times. + */ +void ice_eswitch_reserve_cp_queues(struct ice_pf *pf, int change) +{ + if (pf->eswitch.qs.value + change < 0) + return; - return 0; + pf->eswitch.qs.to_reach = pf->eswitch.qs.value + change; + pf->eswitch.qs.is_reaching = true; } -- cgit v1.2.3