1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (C) 2018-2021, Intel Corporation. */
4 /* Link Aggregation code */
10 #define ICE_LAG_RES_SHARED BIT(14)
11 #define ICE_LAG_RES_VALID BIT(15)
13 #define LACP_TRAIN_PKT_LEN 16
14 static const u8 lacp_train_pkt[LACP_TRAIN_PKT_LEN] = { 0, 0, 0, 0, 0, 0,
18 #define ICE_RECIPE_LEN 64
19 static const u8 ice_dflt_vsi_rcp[ICE_RECIPE_LEN] = {
20 0x05, 0, 0, 0, 0x20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
21 0x85, 0, 0x01, 0, 0, 0, 0xff, 0xff, 0x08, 0, 0, 0, 0, 0, 0, 0,
22 0, 0, 0, 0, 0, 0, 0x30 };
23 static const u8 ice_lport_rcp[ICE_RECIPE_LEN] = {
24 0x05, 0, 0, 0, 0x20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
25 0x85, 0, 0x16, 0, 0, 0, 0xff, 0xff, 0x07, 0, 0, 0, 0, 0, 0, 0,
26 0, 0, 0, 0, 0, 0, 0x30 };
29 * ice_lag_set_primary - set PF LAG state as Primary
30 * @lag: LAG info struct
32 static void ice_lag_set_primary(struct ice_lag *lag)
34 struct ice_pf *pf = lag->pf;
39 if (lag->role != ICE_LAG_UNSET && lag->role != ICE_LAG_BACKUP) {
40 dev_warn(ice_pf_to_dev(pf), "%s: Attempt to be Primary, but incompatible state.\n",
41 netdev_name(lag->netdev));
45 lag->role = ICE_LAG_PRIMARY;
49 * ice_lag_set_backup - set PF LAG state to Backup
50 * @lag: LAG info struct
52 static void ice_lag_set_backup(struct ice_lag *lag)
54 struct ice_pf *pf = lag->pf;
59 if (lag->role != ICE_LAG_UNSET && lag->role != ICE_LAG_PRIMARY) {
60 dev_dbg(ice_pf_to_dev(pf), "%s: Attempt to be Backup, but incompatible state\n",
61 netdev_name(lag->netdev));
65 lag->role = ICE_LAG_BACKUP;
69 * netif_is_same_ice - determine if netdev is on the same ice NIC as local PF
70 * @pf: local PF struct
71 * @netdev: netdev we are evaluating
73 static bool netif_is_same_ice(struct ice_pf *pf, struct net_device *netdev)
75 struct ice_netdev_priv *np;
76 struct ice_pf *test_pf;
79 if (!netif_is_ice(netdev))
82 np = netdev_priv(netdev);
94 if (pf->pdev->bus != test_pf->pdev->bus ||
95 pf->pdev->slot != test_pf->pdev->slot)
102 * ice_netdev_to_lag - return pointer to associated lag struct from netdev
103 * @netdev: pointer to net_device struct to query
105 static struct ice_lag *ice_netdev_to_lag(struct net_device *netdev)
107 struct ice_netdev_priv *np;
110 if (!netif_is_ice(netdev))
113 np = netdev_priv(netdev);
121 return vsi->back->lag;
125 * ice_lag_find_hw_by_lport - return an hw struct from bond members lport
127 * @lport: lport value to search for
129 static struct ice_hw *
130 ice_lag_find_hw_by_lport(struct ice_lag *lag, u8 lport)
132 struct ice_lag_netdev_list *entry;
133 struct net_device *tmp_netdev;
134 struct ice_netdev_priv *np;
137 list_for_each_entry(entry, lag->netdev_head, node) {
138 tmp_netdev = entry->netdev;
139 if (!tmp_netdev || !netif_is_ice(tmp_netdev))
142 np = netdev_priv(tmp_netdev);
146 hw = &np->vsi->back->hw;
147 if (hw->port_info->lport == lport)
155 * ice_pkg_has_lport_extract - check if lport extraction supported
158 static bool ice_pkg_has_lport_extract(struct ice_hw *hw)
162 for (i = 0; i < hw->blk[ICE_BLK_SW].es.count; i++) {
166 ice_find_prot_off(hw, ICE_BLK_SW, ICE_SW_DEFAULT_PROFILE, i,
168 if (fv_prot == ICE_FV_PROT_MDID &&
169 offset == ICE_LP_EXT_BUF_OFFSET)
176 * ice_lag_find_primary - returns pointer to primary interfaces lag struct
177 * @lag: local interfaces lag struct
179 static struct ice_lag *ice_lag_find_primary(struct ice_lag *lag)
181 struct ice_lag *primary_lag = NULL;
182 struct list_head *tmp;
184 list_for_each(tmp, lag->netdev_head) {
185 struct ice_lag_netdev_list *entry;
186 struct ice_lag *tmp_lag;
188 entry = list_entry(tmp, struct ice_lag_netdev_list, node);
189 tmp_lag = ice_netdev_to_lag(entry->netdev);
190 if (tmp_lag && tmp_lag->primary) {
191 primary_lag = tmp_lag;
200 * ice_lag_cfg_fltr - Add/Remove rule for LAG
201 * @lag: lag struct for local interface
203 * @recipe_id: recipe id for the new rule
204 * @rule_idx: pointer to rule index
205 * @add: boolean on whether we are adding filters
208 ice_lag_cfg_fltr(struct ice_lag *lag, u32 act, u16 recipe_id, u16 *rule_idx,
211 struct ice_sw_rule_lkup_rx_tx *s_rule;
212 u16 s_rule_sz, vsi_num;
219 vsi_num = ice_get_hw_vsi_num(hw, 0);
221 s_rule_sz = ICE_SW_RULE_RX_TX_ETH_HDR_SIZE(s_rule);
222 s_rule = kzalloc(s_rule_sz, GFP_KERNEL);
224 dev_err(ice_pf_to_dev(lag->pf), "error allocating rule for LAG\n");
229 eth_hdr = s_rule->hdr_data;
230 ice_fill_eth_hdr(eth_hdr);
232 act |= FIELD_PREP(ICE_SINGLE_ACT_VSI_ID_M, vsi_num);
234 s_rule->hdr.type = cpu_to_le16(ICE_AQC_SW_RULES_T_LKUP_RX);
235 s_rule->recipe_id = cpu_to_le16(recipe_id);
236 s_rule->src = cpu_to_le16(hw->port_info->lport);
237 s_rule->act = cpu_to_le32(act);
238 s_rule->hdr_len = cpu_to_le16(DUMMY_ETH_HDR_LEN);
239 opc = ice_aqc_opc_add_sw_rules;
241 s_rule->index = cpu_to_le16(*rule_idx);
242 opc = ice_aqc_opc_remove_sw_rules;
245 err = ice_aq_sw_rules(&lag->pf->hw, s_rule, s_rule_sz, 1, opc, NULL);
250 *rule_idx = le16_to_cpu(s_rule->index);
260 * ice_lag_cfg_dflt_fltr - Add/Remove default VSI rule for LAG
261 * @lag: lag struct for local interface
262 * @add: boolean on whether to add filter
265 ice_lag_cfg_dflt_fltr(struct ice_lag *lag, bool add)
267 u32 act = ICE_SINGLE_ACT_VSI_FORWARDING |
268 ICE_SINGLE_ACT_VALID_BIT | ICE_SINGLE_ACT_LAN_ENABLE;
270 return ice_lag_cfg_fltr(lag, act, lag->pf_recipe,
271 &lag->pf_rule_id, add);
275 * ice_lag_cfg_drop_fltr - Add/Remove lport drop rule
276 * @lag: lag struct for local interface
277 * @add: boolean on whether to add filter
280 ice_lag_cfg_drop_fltr(struct ice_lag *lag, bool add)
282 u32 act = ICE_SINGLE_ACT_VSI_FORWARDING |
283 ICE_SINGLE_ACT_VALID_BIT |
286 return ice_lag_cfg_fltr(lag, act, lag->lport_recipe,
287 &lag->lport_rule_idx, add);
291 * ice_lag_cfg_pf_fltrs - set filters up for new active port
292 * @lag: local interfaces lag struct
293 * @ptr: opaque data containing notifier event
296 ice_lag_cfg_pf_fltrs(struct ice_lag *lag, void *ptr)
298 struct netdev_notifier_bonding_info *info;
299 struct netdev_bonding_info *bonding_info;
300 struct net_device *event_netdev;
303 event_netdev = netdev_notifier_info_to_dev(ptr);
304 /* not for this netdev */
305 if (event_netdev != lag->netdev)
308 info = (struct netdev_notifier_bonding_info *)ptr;
309 bonding_info = &info->bonding_info;
310 dev = ice_pf_to_dev(lag->pf);
312 /* interface not active - remove old default VSI rule */
313 if (bonding_info->slave.state && lag->pf_rule_id) {
314 if (ice_lag_cfg_dflt_fltr(lag, false))
315 dev_err(dev, "Error removing old default VSI filter\n");
316 if (ice_lag_cfg_drop_fltr(lag, true))
317 dev_err(dev, "Error adding new drop filter\n");
321 /* interface becoming active - add new default VSI rule */
322 if (!bonding_info->slave.state && !lag->pf_rule_id) {
323 if (ice_lag_cfg_dflt_fltr(lag, true))
324 dev_err(dev, "Error adding new default VSI filter\n");
325 if (lag->lport_rule_idx && ice_lag_cfg_drop_fltr(lag, false))
326 dev_err(dev, "Error removing old drop filter\n");
331 * ice_display_lag_info - print LAG info
332 * @lag: LAG info struct
334 static void ice_display_lag_info(struct ice_lag *lag)
336 const char *name, *upper, *role, *bonded, *primary;
337 struct device *dev = &lag->pf->pdev->dev;
339 name = lag->netdev ? netdev_name(lag->netdev) : "unset";
340 upper = lag->upper_netdev ? netdev_name(lag->upper_netdev) : "unset";
341 primary = lag->primary ? "TRUE" : "FALSE";
342 bonded = lag->bonded ? "BONDED" : "UNBONDED";
348 case ICE_LAG_PRIMARY:
361 dev_dbg(dev, "%s %s, upper:%s, role:%s, primary:%s\n", name, bonded,
362 upper, role, primary);
366 * ice_lag_qbuf_recfg - generate a buffer of queues for a reconfigure command
367 * @hw: HW struct that contains the queue contexts
368 * @qbuf: pointer to buffer to populate
369 * @vsi_num: index of the VSI in PF space
370 * @numq: number of queues to search for
371 * @tc: traffic class that contains the queues
373 * function returns the number of valid queues in buffer
376 ice_lag_qbuf_recfg(struct ice_hw *hw, struct ice_aqc_cfg_txqs_buf *qbuf,
377 u16 vsi_num, u16 numq, u8 tc)
379 struct ice_q_ctx *q_ctx;
385 for (i = 0; i < numq; i++) {
386 q_ctx = ice_get_lan_q_ctx(hw, vsi_num, tc, i);
388 dev_dbg(ice_hw_to_dev(hw), "%s queue %d NO Q CONTEXT\n",
392 if (q_ctx->q_teid == ICE_INVAL_TEID) {
393 dev_dbg(ice_hw_to_dev(hw), "%s queue %d INVAL TEID\n",
397 if (q_ctx->q_handle == ICE_INVAL_Q_HANDLE) {
398 dev_dbg(ice_hw_to_dev(hw), "%s queue %d INVAL Q HANDLE\n",
403 qid = pf->vsi[vsi_num]->txq_map[q_ctx->q_handle];
404 qbuf->queue_info[count].q_handle = cpu_to_le16(qid);
405 qbuf->queue_info[count].tc = tc;
406 qbuf->queue_info[count].q_teid = cpu_to_le32(q_ctx->q_teid);
414 * ice_lag_get_sched_parent - locate or create a sched node parent
415 * @hw: HW struct for getting parent in
416 * @tc: traffic class on parent/node
418 static struct ice_sched_node *
419 ice_lag_get_sched_parent(struct ice_hw *hw, u8 tc)
421 struct ice_sched_node *tc_node, *aggnode, *parent = NULL;
422 u16 num_nodes[ICE_AQC_TOPO_MAX_LEVEL_NUM] = { 0 };
423 struct ice_port_info *pi = hw->port_info;
428 dev = ice_hw_to_dev(hw);
430 tc_node = ice_sched_get_tc_node(pi, tc);
432 dev_warn(dev, "Failure to find TC node for LAG move\n");
436 aggnode = ice_sched_get_agg_node(pi, tc_node, ICE_DFLT_AGG_ID);
438 dev_warn(dev, "Failure to find aggregate node for LAG move\n");
442 aggl = ice_sched_get_agg_layer(hw);
443 vsil = ice_sched_get_vsi_layer(hw);
445 for (n = aggl + 1; n < vsil; n++)
448 for (n = 0; n < aggnode->num_children; n++) {
449 parent = ice_sched_get_free_vsi_parent(hw, aggnode->children[n],
455 /* if free parent not found - add one */
457 for (n = aggl + 1; n < vsil; n++) {
462 err = ice_sched_add_nodes_to_layer(pi, tc_node, parent, n,
463 num_nodes[n], &first_teid,
465 if (err || num_nodes[n] != num_nodes_added)
469 parent = ice_sched_find_node_by_teid(tc_node,
472 parent = parent->children[0];
474 dev_warn(dev, "Failure to add new parent for LAG move\n");
483 * ice_lag_move_vf_node_tc - move scheduling nodes for one VF on one TC
484 * @lag: lag info struct
485 * @oldport: lport of previous nodes location
486 * @newport: lport of destination nodes location
487 * @vsi_num: array index of VSI in PF space
488 * @tc: traffic class to move
491 ice_lag_move_vf_node_tc(struct ice_lag *lag, u8 oldport, u8 newport,
494 DEFINE_RAW_FLEX(struct ice_aqc_move_elem, buf, teid, 1);
495 struct device *dev = ice_pf_to_dev(lag->pf);
496 u16 numq, valq, num_moved, qbuf_size;
497 u16 buf_size = __struct_size(buf);
498 struct ice_aqc_cfg_txqs_buf *qbuf;
499 struct ice_sched_node *n_prt;
500 struct ice_hw *new_hw = NULL;
501 __le32 teid, parent_teid;
502 struct ice_vsi_ctx *ctx;
505 ctx = ice_get_vsi_ctx(&lag->pf->hw, vsi_num);
507 dev_warn(dev, "Unable to locate VSI context for LAG failover\n");
511 /* check to see if this VF is enabled on this TC */
512 if (!ctx->sched.vsi_node[tc])
515 /* locate HW struct for destination port */
516 new_hw = ice_lag_find_hw_by_lport(lag, newport);
518 dev_warn(dev, "Unable to locate HW struct for LAG node destination\n");
522 numq = ctx->num_lan_q_entries[tc];
523 teid = ctx->sched.vsi_node[tc]->info.node_teid;
524 tmp_teid = le32_to_cpu(teid);
525 parent_teid = ctx->sched.vsi_node[tc]->info.parent_teid;
526 /* if no teid assigned or numq == 0, then this TC is not active */
527 if (!tmp_teid || !numq)
530 /* suspend VSI subtree for Traffic Class "tc" on
533 if (ice_sched_suspend_resume_elems(&lag->pf->hw, 1, &tmp_teid, true))
534 dev_dbg(dev, "Problem suspending traffic for LAG node move\n");
536 /* reconfigure all VF's queues on this Traffic Class
539 qbuf_size = struct_size(qbuf, queue_info, numq);
540 qbuf = kzalloc(qbuf_size, GFP_KERNEL);
542 dev_warn(dev, "Failure allocating memory for VF queue recfg buffer\n");
546 /* add the per queue info for the reconfigure command buffer */
547 valq = ice_lag_qbuf_recfg(&lag->pf->hw, qbuf, vsi_num, numq, tc);
549 dev_dbg(dev, "No valid queues found for LAG failover\n");
553 if (ice_aq_cfg_lan_txq(&lag->pf->hw, qbuf, qbuf_size, valq, oldport,
555 dev_warn(dev, "Failure to configure queues for LAG failover\n");
562 /* find new parent in destination port's tree for VF VSI node on this
565 n_prt = ice_lag_get_sched_parent(new_hw, tc);
569 /* Move Vf's VSI node for this TC to newport's scheduler tree */
570 buf->hdr.src_parent_teid = parent_teid;
571 buf->hdr.dest_parent_teid = n_prt->info.node_teid;
572 buf->hdr.num_elems = cpu_to_le16(1);
573 buf->hdr.mode = ICE_AQC_MOVE_ELEM_MODE_KEEP_OWN;
576 if (ice_aq_move_sched_elems(&lag->pf->hw, buf, buf_size, &num_moved))
577 dev_warn(dev, "Failure to move VF nodes for failover\n");
579 ice_sched_update_parent(n_prt, ctx->sched.vsi_node[tc]);
587 /* restart traffic for VSI node */
588 if (ice_sched_suspend_resume_elems(&lag->pf->hw, 1, &tmp_teid, false))
589 dev_dbg(dev, "Problem restarting traffic for LAG node move\n");
593 * ice_lag_build_netdev_list - populate the lag struct's netdev list
594 * @lag: local lag struct
595 * @ndlist: pointer to netdev list to populate
597 static void ice_lag_build_netdev_list(struct ice_lag *lag,
598 struct ice_lag_netdev_list *ndlist)
600 struct ice_lag_netdev_list *nl;
601 struct net_device *tmp_nd;
603 INIT_LIST_HEAD(&ndlist->node);
605 for_each_netdev_in_bond_rcu(lag->upper_netdev, tmp_nd) {
606 nl = kzalloc(sizeof(*nl), GFP_ATOMIC);
611 list_add(&nl->node, &ndlist->node);
614 lag->netdev_head = &ndlist->node;
618 * ice_lag_destroy_netdev_list - free lag struct's netdev list
619 * @lag: pointer to local lag struct
620 * @ndlist: pointer to lag struct netdev list
622 static void ice_lag_destroy_netdev_list(struct ice_lag *lag,
623 struct ice_lag_netdev_list *ndlist)
625 struct ice_lag_netdev_list *entry, *n;
628 list_for_each_entry_safe(entry, n, &ndlist->node, node) {
629 list_del(&entry->node);
633 lag->netdev_head = NULL;
637 * ice_lag_move_single_vf_nodes - Move Tx scheduling nodes for single VF
638 * @lag: primary interface LAG struct
639 * @oldport: lport of previous interface
640 * @newport: lport of destination interface
641 * @vsi_num: SW index of VF's VSI
644 ice_lag_move_single_vf_nodes(struct ice_lag *lag, u8 oldport, u8 newport,
649 ice_for_each_traffic_class(tc)
650 ice_lag_move_vf_node_tc(lag, oldport, newport, vsi_num, tc);
654 * ice_lag_move_new_vf_nodes - Move Tx scheduling nodes for a VF if required
655 * @vf: the VF to move Tx nodes for
657 * Called just after configuring new VF queues. Check whether the VF Tx
658 * scheduling nodes need to be updated to fail over to the active port. If so,
661 void ice_lag_move_new_vf_nodes(struct ice_vf *vf)
663 struct ice_lag_netdev_list ndlist;
664 u8 pri_port, act_port;
669 vsi = ice_get_vf_vsi(vf);
674 if (WARN_ON(vsi->type != ICE_VSI_VF))
680 mutex_lock(&pf->lag_mutex);
684 pri_port = pf->hw.port_info->lport;
685 act_port = lag->active_port;
687 if (lag->upper_netdev)
688 ice_lag_build_netdev_list(lag, &ndlist);
690 if (ice_is_feature_supported(pf, ICE_F_SRIOV_LAG) &&
691 lag->bonded && lag->primary && pri_port != act_port &&
692 !list_empty(lag->netdev_head))
693 ice_lag_move_single_vf_nodes(lag, pri_port, act_port, vsi->idx);
695 ice_lag_destroy_netdev_list(lag, &ndlist);
698 mutex_unlock(&pf->lag_mutex);
702 * ice_lag_move_vf_nodes - move Tx scheduling nodes for all VFs to new port
703 * @lag: lag info struct
704 * @oldport: lport of previous interface
705 * @newport: lport of destination interface
707 static void ice_lag_move_vf_nodes(struct ice_lag *lag, u8 oldport, u8 newport)
716 ice_for_each_vsi(pf, i)
717 if (pf->vsi[i] && (pf->vsi[i]->type == ICE_VSI_VF ||
718 pf->vsi[i]->type == ICE_VSI_SWITCHDEV_CTRL))
719 ice_lag_move_single_vf_nodes(lag, oldport, newport, i);
723 * ice_lag_move_vf_nodes_cfg - move vf nodes outside LAG netdev event context
724 * @lag: local lag struct
725 * @src_prt: lport value for source port
726 * @dst_prt: lport value for destination port
728 * This function is used to move nodes during an out-of-netdev-event situation,
729 * primarily when the driver needs to reconfigure or recreate resources.
731 * Must be called while holding the lag_mutex to avoid lag events from
732 * processing while out-of-sync moves are happening. Also, paired moves,
733 * such as used in a reset flow, should both be called under the same mutex
734 * lock to avoid changes between start of reset and end of reset.
736 void ice_lag_move_vf_nodes_cfg(struct ice_lag *lag, u8 src_prt, u8 dst_prt)
738 struct ice_lag_netdev_list ndlist;
740 ice_lag_build_netdev_list(lag, &ndlist);
741 ice_lag_move_vf_nodes(lag, src_prt, dst_prt);
742 ice_lag_destroy_netdev_list(lag, &ndlist);
745 #define ICE_LAG_SRIOV_CP_RECIPE 10
746 #define ICE_LAG_SRIOV_TRAIN_PKT_LEN 16
749 * ice_lag_cfg_cp_fltr - configure filter for control packets
750 * @lag: local interface's lag struct
751 * @add: add or remove rule
754 ice_lag_cfg_cp_fltr(struct ice_lag *lag, bool add)
756 struct ice_sw_rule_lkup_rx_tx *s_rule = NULL;
760 vsi = lag->pf->vsi[0];
762 buf_len = ICE_SW_RULE_RX_TX_HDR_SIZE(s_rule,
763 ICE_LAG_SRIOV_TRAIN_PKT_LEN);
764 s_rule = kzalloc(buf_len, GFP_KERNEL);
766 netdev_warn(lag->netdev, "-ENOMEM error configuring CP filter\n");
771 s_rule->hdr.type = cpu_to_le16(ICE_AQC_SW_RULES_T_LKUP_RX);
772 s_rule->recipe_id = cpu_to_le16(ICE_LAG_SRIOV_CP_RECIPE);
773 s_rule->src = cpu_to_le16(vsi->port_info->lport);
774 s_rule->act = cpu_to_le32(ICE_FWD_TO_VSI |
775 ICE_SINGLE_ACT_LAN_ENABLE |
776 ICE_SINGLE_ACT_VALID_BIT |
777 FIELD_PREP(ICE_SINGLE_ACT_VSI_ID_M, vsi->vsi_num));
778 s_rule->hdr_len = cpu_to_le16(ICE_LAG_SRIOV_TRAIN_PKT_LEN);
779 memcpy(s_rule->hdr_data, lacp_train_pkt, LACP_TRAIN_PKT_LEN);
780 opc = ice_aqc_opc_add_sw_rules;
782 opc = ice_aqc_opc_remove_sw_rules;
783 s_rule->index = cpu_to_le16(lag->cp_rule_idx);
785 if (ice_aq_sw_rules(&lag->pf->hw, s_rule, buf_len, 1, opc, NULL)) {
786 netdev_warn(lag->netdev, "Error %s CP rule for fail-over\n",
787 add ? "ADDING" : "REMOVING");
792 lag->cp_rule_idx = le16_to_cpu(s_rule->index);
794 lag->cp_rule_idx = 0;
801 * ice_lag_info_event - handle NETDEV_BONDING_INFO event
802 * @lag: LAG info struct
803 * @ptr: opaque data pointer
805 * ptr is to be cast to (netdev_notifier_bonding_info *)
807 static void ice_lag_info_event(struct ice_lag *lag, void *ptr)
809 struct netdev_notifier_bonding_info *info;
810 struct netdev_bonding_info *bonding_info;
811 struct net_device *event_netdev;
812 const char *lag_netdev_name;
814 event_netdev = netdev_notifier_info_to_dev(ptr);
816 lag_netdev_name = netdev_name(lag->netdev);
817 bonding_info = &info->bonding_info;
819 if (event_netdev != lag->netdev || !lag->bonded || !lag->upper_netdev)
822 if (bonding_info->master.bond_mode != BOND_MODE_ACTIVEBACKUP) {
823 netdev_dbg(lag->netdev, "Bonding event recv, but mode not active/backup\n");
827 if (strcmp(bonding_info->slave.slave_name, lag_netdev_name)) {
828 netdev_dbg(lag->netdev, "Bonding event recv, but secondary info not for us\n");
832 if (bonding_info->slave.state)
833 ice_lag_set_backup(lag);
835 ice_lag_set_primary(lag);
838 ice_display_lag_info(lag);
842 * ice_lag_reclaim_vf_tc - move scheduling nodes back to primary interface
843 * @lag: primary interface lag struct
844 * @src_hw: HW struct current node location
845 * @vsi_num: VSI index in PF space
846 * @tc: traffic class to move
849 ice_lag_reclaim_vf_tc(struct ice_lag *lag, struct ice_hw *src_hw, u16 vsi_num,
852 DEFINE_RAW_FLEX(struct ice_aqc_move_elem, buf, teid, 1);
853 struct device *dev = ice_pf_to_dev(lag->pf);
854 u16 numq, valq, num_moved, qbuf_size;
855 u16 buf_size = __struct_size(buf);
856 struct ice_aqc_cfg_txqs_buf *qbuf;
857 struct ice_sched_node *n_prt;
858 __le32 teid, parent_teid;
859 struct ice_vsi_ctx *ctx;
864 ctx = ice_get_vsi_ctx(hw, vsi_num);
866 dev_warn(dev, "Unable to locate VSI context for LAG reclaim\n");
870 /* check to see if this VF is enabled on this TC */
871 if (!ctx->sched.vsi_node[tc])
874 numq = ctx->num_lan_q_entries[tc];
875 teid = ctx->sched.vsi_node[tc]->info.node_teid;
876 tmp_teid = le32_to_cpu(teid);
877 parent_teid = ctx->sched.vsi_node[tc]->info.parent_teid;
879 /* if !teid or !numq, then this TC is not active */
880 if (!tmp_teid || !numq)
883 /* suspend traffic */
884 if (ice_sched_suspend_resume_elems(hw, 1, &tmp_teid, true))
885 dev_dbg(dev, "Problem suspending traffic for LAG node move\n");
887 /* reconfig queues for new port */
888 qbuf_size = struct_size(qbuf, queue_info, numq);
889 qbuf = kzalloc(qbuf_size, GFP_KERNEL);
891 dev_warn(dev, "Failure allocating memory for VF queue recfg buffer\n");
895 /* add the per queue info for the reconfigure command buffer */
896 valq = ice_lag_qbuf_recfg(hw, qbuf, vsi_num, numq, tc);
898 dev_dbg(dev, "No valid queues found for LAG reclaim\n");
902 if (ice_aq_cfg_lan_txq(hw, qbuf, qbuf_size, numq,
903 src_hw->port_info->lport, hw->port_info->lport,
905 dev_warn(dev, "Failure to configure queues for LAG failover\n");
912 /* find parent in primary tree */
913 n_prt = ice_lag_get_sched_parent(hw, tc);
917 /* Move node to new parent */
918 buf->hdr.src_parent_teid = parent_teid;
919 buf->hdr.dest_parent_teid = n_prt->info.node_teid;
920 buf->hdr.num_elems = cpu_to_le16(1);
921 buf->hdr.mode = ICE_AQC_MOVE_ELEM_MODE_KEEP_OWN;
924 if (ice_aq_move_sched_elems(&lag->pf->hw, buf, buf_size, &num_moved))
925 dev_warn(dev, "Failure to move VF nodes for LAG reclaim\n");
927 ice_sched_update_parent(n_prt, ctx->sched.vsi_node[tc]);
935 /* restart traffic */
936 if (ice_sched_suspend_resume_elems(hw, 1, &tmp_teid, false))
937 dev_warn(dev, "Problem restarting traffic for LAG node reclaim\n");
941 * ice_lag_reclaim_vf_nodes - When interface leaving bond primary reclaims nodes
942 * @lag: primary interface lag struct
943 * @src_hw: HW struct for current node location
946 ice_lag_reclaim_vf_nodes(struct ice_lag *lag, struct ice_hw *src_hw)
951 if (!lag->primary || !src_hw)
955 ice_for_each_vsi(pf, i)
956 if (pf->vsi[i] && (pf->vsi[i]->type == ICE_VSI_VF ||
957 pf->vsi[i]->type == ICE_VSI_SWITCHDEV_CTRL))
958 ice_for_each_traffic_class(tc)
959 ice_lag_reclaim_vf_tc(lag, src_hw, i, tc);
963 * ice_lag_link - handle LAG link event
964 * @lag: LAG info struct
966 static void ice_lag_link(struct ice_lag *lag)
968 struct ice_pf *pf = lag->pf;
971 dev_warn(ice_pf_to_dev(pf), "%s Already part of a bond\n",
972 netdev_name(lag->netdev));
975 lag->role = ICE_LAG_UNSET;
976 netdev_info(lag->netdev, "Shared SR-IOV resources in bond are active\n");
980 * ice_lag_unlink - handle unlink event
981 * @lag: LAG info struct
983 static void ice_lag_unlink(struct ice_lag *lag)
985 u8 pri_port, act_port, loc_port;
986 struct ice_pf *pf = lag->pf;
989 netdev_dbg(lag->netdev, "bonding unlink event on non-LAG netdev\n");
994 act_port = lag->active_port;
995 pri_port = lag->pf->hw.port_info->lport;
996 if (act_port != pri_port && act_port != ICE_LAG_INVALID_PORT)
997 ice_lag_move_vf_nodes(lag, act_port, pri_port);
998 lag->primary = false;
999 lag->active_port = ICE_LAG_INVALID_PORT;
1001 struct ice_lag *primary_lag;
1003 primary_lag = ice_lag_find_primary(lag);
1005 act_port = primary_lag->active_port;
1006 pri_port = primary_lag->pf->hw.port_info->lport;
1007 loc_port = pf->hw.port_info->lport;
1008 if (act_port == loc_port &&
1009 act_port != ICE_LAG_INVALID_PORT) {
1010 ice_lag_reclaim_vf_nodes(primary_lag,
1012 primary_lag->active_port = ICE_LAG_INVALID_PORT;
1017 lag->bonded = false;
1018 lag->role = ICE_LAG_NONE;
1019 lag->upper_netdev = NULL;
1023 * ice_lag_link_unlink - helper function to call lag_link/unlink
1024 * @lag: lag info struct
1025 * @ptr: opaque pointer data
1027 static void ice_lag_link_unlink(struct ice_lag *lag, void *ptr)
1029 struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
1030 struct netdev_notifier_changeupper_info *info = ptr;
1032 if (netdev != lag->netdev)
1038 ice_lag_unlink(lag);
1042 * ice_lag_set_swid - set the SWID on secondary interface
1043 * @primary_swid: primary interface's SWID
1044 * @local_lag: local interfaces LAG struct
1045 * @link: Is this a linking activity
1047 * If link is false, then primary_swid should be expected to not be valid
1048 * This function should never be called in interrupt context.
1051 ice_lag_set_swid(u16 primary_swid, struct ice_lag *local_lag,
1054 struct ice_aqc_alloc_free_res_elem *buf;
1055 struct ice_aqc_set_port_params *cmd;
1056 struct ice_aq_desc desc;
1060 buf_len = struct_size(buf, elem, 1);
1061 buf = kzalloc(buf_len, GFP_KERNEL);
1063 dev_err(ice_pf_to_dev(local_lag->pf), "-ENOMEM error setting SWID\n");
1067 buf->num_elems = cpu_to_le16(1);
1068 buf->res_type = cpu_to_le16(ICE_AQC_RES_TYPE_SWID);
1069 /* if unlinnking need to free the shared resource */
1070 if (!link && local_lag->bond_swid) {
1071 buf->elem[0].e.sw_resp = cpu_to_le16(local_lag->bond_swid);
1072 status = ice_aq_alloc_free_res(&local_lag->pf->hw, buf,
1073 buf_len, ice_aqc_opc_free_res);
1075 dev_err(ice_pf_to_dev(local_lag->pf), "Error freeing SWID during LAG unlink\n");
1076 local_lag->bond_swid = 0;
1080 buf->res_type |= cpu_to_le16(ICE_LAG_RES_SHARED |
1082 /* store the primary's SWID in case it leaves bond first */
1083 local_lag->bond_swid = primary_swid;
1084 buf->elem[0].e.sw_resp = cpu_to_le16(local_lag->bond_swid);
1086 buf->elem[0].e.sw_resp =
1087 cpu_to_le16(local_lag->pf->hw.port_info->sw_id);
1090 status = ice_aq_alloc_free_res(&local_lag->pf->hw, buf, buf_len,
1091 ice_aqc_opc_alloc_res);
1093 dev_err(ice_pf_to_dev(local_lag->pf), "Error subscribing to SWID 0x%04X\n",
1094 local_lag->bond_swid);
1098 /* Configure port param SWID to correct value */
1100 swid = primary_swid;
1102 swid = local_lag->pf->hw.port_info->sw_id;
1104 cmd = &desc.params.set_port_params;
1105 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_set_port_params);
1107 cmd->swid = cpu_to_le16(ICE_AQC_PORT_SWID_VALID | swid);
1108 /* If this is happening in reset context, it is possible that the
1109 * primary interface has not finished setting its SWID to SHARED
1110 * yet. Allow retries to account for this timing issue between
1113 for (i = 0; i < ICE_LAG_RESET_RETRIES; i++) {
1114 status = ice_aq_send_cmd(&local_lag->pf->hw, &desc, NULL, 0,
1119 usleep_range(1000, 2000);
1123 dev_err(ice_pf_to_dev(local_lag->pf), "Error setting SWID in port params %d\n",
1128 * ice_lag_primary_swid - set/clear the SHARED attrib of primary's SWID
1129 * @lag: primary interface's lag struct
1130 * @link: is this a linking activity
1132 * Implement setting primary SWID as shared using 0x020B
1134 static void ice_lag_primary_swid(struct ice_lag *lag, bool link)
1140 swid = hw->port_info->sw_id;
1142 if (ice_share_res(hw, ICE_AQC_RES_TYPE_SWID, link, swid))
1143 dev_warn(ice_pf_to_dev(lag->pf), "Failure to set primary interface shared status\n");
1147 * ice_lag_add_prune_list - Adds event_pf's VSI to primary's prune list
1148 * @lag: lag info struct
1149 * @event_pf: PF struct for VSI we are adding to primary's prune list
1151 static void ice_lag_add_prune_list(struct ice_lag *lag, struct ice_pf *event_pf)
1153 u16 num_vsi, rule_buf_sz, vsi_list_id, event_vsi_num, prim_vsi_idx;
1154 struct ice_sw_rule_vsi_list *s_rule = NULL;
1159 dev = ice_pf_to_dev(lag->pf);
1160 event_vsi_num = event_pf->vsi[0]->vsi_num;
1161 prim_vsi_idx = lag->pf->vsi[0]->idx;
1163 if (!ice_find_vsi_list_entry(&lag->pf->hw, ICE_SW_LKUP_VLAN,
1164 prim_vsi_idx, &vsi_list_id)) {
1165 dev_warn(dev, "Could not locate prune list when setting up SRIOV LAG\n");
1169 rule_buf_sz = (u16)ICE_SW_RULE_VSI_LIST_SIZE(s_rule, num_vsi);
1170 s_rule = kzalloc(rule_buf_sz, GFP_KERNEL);
1172 dev_warn(dev, "Error allocating space for prune list when configuring SRIOV LAG\n");
1176 s_rule->hdr.type = cpu_to_le16(ICE_AQC_SW_RULES_T_PRUNE_LIST_SET);
1177 s_rule->index = cpu_to_le16(vsi_list_id);
1178 s_rule->number_vsi = cpu_to_le16(num_vsi);
1179 s_rule->vsi[0] = cpu_to_le16(event_vsi_num);
1181 if (ice_aq_sw_rules(&event_pf->hw, s_rule, rule_buf_sz, 1,
1182 ice_aqc_opc_update_sw_rules, NULL))
1183 dev_warn(dev, "Error adding VSI prune list\n");
1188 * ice_lag_del_prune_list - Remove secondary's vsi from primary's prune list
1189 * @lag: primary interface's ice_lag struct
1190 * @event_pf: PF struct for unlinking interface
1192 static void ice_lag_del_prune_list(struct ice_lag *lag, struct ice_pf *event_pf)
1194 u16 num_vsi, vsi_num, vsi_idx, rule_buf_sz, vsi_list_id;
1195 struct ice_sw_rule_vsi_list *s_rule = NULL;
1200 dev = ice_pf_to_dev(lag->pf);
1201 vsi_num = event_pf->vsi[0]->vsi_num;
1202 vsi_idx = lag->pf->vsi[0]->idx;
1204 if (!ice_find_vsi_list_entry(&lag->pf->hw, ICE_SW_LKUP_VLAN,
1205 vsi_idx, &vsi_list_id)) {
1206 dev_warn(dev, "Could not locate prune list when unwinding SRIOV LAG\n");
1210 rule_buf_sz = (u16)ICE_SW_RULE_VSI_LIST_SIZE(s_rule, num_vsi);
1211 s_rule = kzalloc(rule_buf_sz, GFP_KERNEL);
1213 dev_warn(dev, "Error allocating prune list when unwinding SRIOV LAG\n");
1217 s_rule->hdr.type = cpu_to_le16(ICE_AQC_SW_RULES_T_PRUNE_LIST_CLEAR);
1218 s_rule->index = cpu_to_le16(vsi_list_id);
1219 s_rule->number_vsi = cpu_to_le16(num_vsi);
1220 s_rule->vsi[0] = cpu_to_le16(vsi_num);
1222 if (ice_aq_sw_rules(&event_pf->hw, (struct ice_aqc_sw_rules *)s_rule,
1223 rule_buf_sz, 1, ice_aqc_opc_update_sw_rules, NULL))
1224 dev_warn(dev, "Error clearing VSI prune list\n");
1230 * ice_lag_init_feature_support_flag - Check for package and NVM support for LAG
1233 static void ice_lag_init_feature_support_flag(struct ice_pf *pf)
1235 struct ice_hw_common_caps *caps;
1237 caps = &pf->hw.dev_caps.common_cap;
1239 ice_set_feature_support(pf, ICE_F_ROCE_LAG);
1241 ice_clear_feature_support(pf, ICE_F_ROCE_LAG);
1243 if (caps->sriov_lag && ice_pkg_has_lport_extract(&pf->hw))
1244 ice_set_feature_support(pf, ICE_F_SRIOV_LAG);
1246 ice_clear_feature_support(pf, ICE_F_SRIOV_LAG);
1250 * ice_lag_changeupper_event - handle LAG changeupper event
1251 * @lag: LAG info struct
1252 * @ptr: opaque pointer data
1254 static void ice_lag_changeupper_event(struct ice_lag *lag, void *ptr)
1256 struct netdev_notifier_changeupper_info *info;
1257 struct ice_lag *primary_lag;
1258 struct net_device *netdev;
1261 netdev = netdev_notifier_info_to_dev(ptr);
1263 /* not for this netdev */
1264 if (netdev != lag->netdev)
1267 primary_lag = ice_lag_find_primary(lag);
1268 if (info->linking) {
1269 lag->upper_netdev = info->upper_dev;
1270 /* If there is not already a primary interface in the LAG,
1271 * then mark this one as primary.
1274 lag->primary = true;
1275 /* Configure primary's SWID to be shared */
1276 ice_lag_primary_swid(lag, true);
1281 swid = primary_lag->pf->hw.port_info->sw_id;
1282 ice_lag_set_swid(swid, lag, true);
1283 ice_lag_add_prune_list(primary_lag, lag->pf);
1284 ice_lag_cfg_drop_fltr(lag, true);
1286 /* add filter for primary control packets */
1287 ice_lag_cfg_cp_fltr(lag, true);
1289 if (!primary_lag && lag->primary)
1292 if (!lag->primary) {
1293 ice_lag_set_swid(0, lag, false);
1295 if (primary_lag && lag->primary) {
1296 ice_lag_primary_swid(lag, false);
1297 ice_lag_del_prune_list(primary_lag, lag->pf);
1300 /* remove filter for control packets */
1301 ice_lag_cfg_cp_fltr(lag, false);
1306 * ice_lag_monitor_link - monitor interfaces entering/leaving the aggregate
1307 * @lag: lag info struct
1308 * @ptr: opaque data containing notifier event
1310 * This function only operates after a primary has been set.
1312 static void ice_lag_monitor_link(struct ice_lag *lag, void *ptr)
1314 struct netdev_notifier_changeupper_info *info;
1315 struct ice_hw *prim_hw, *active_hw;
1316 struct net_device *event_netdev;
1323 event_netdev = netdev_notifier_info_to_dev(ptr);
1324 if (!netif_is_same_ice(lag->pf, event_netdev))
1329 prim_port = prim_hw->port_info->lport;
1331 info = (struct netdev_notifier_changeupper_info *)ptr;
1332 if (info->upper_dev != lag->upper_netdev)
1335 if (!info->linking) {
1336 /* Since there are only two interfaces allowed in SRIOV+LAG, if
1337 * one port is leaving, then nodes need to be on primary
1340 if (prim_port != lag->active_port &&
1341 lag->active_port != ICE_LAG_INVALID_PORT) {
1342 active_hw = ice_lag_find_hw_by_lport(lag,
1344 ice_lag_reclaim_vf_nodes(lag, active_hw);
1345 lag->active_port = ICE_LAG_INVALID_PORT;
1351 * ice_lag_monitor_active - main PF keep track of which port is active
1352 * @lag: lag info struct
1353 * @ptr: opaque data containing notifier event
1355 * This function is for the primary PF to monitor changes in which port is
1356 * active and handle changes for SRIOV VF functionality
1358 static void ice_lag_monitor_active(struct ice_lag *lag, void *ptr)
1360 struct net_device *event_netdev, *event_upper;
1361 struct netdev_notifier_bonding_info *info;
1362 struct netdev_bonding_info *bonding_info;
1363 struct ice_netdev_priv *event_np;
1364 struct ice_pf *pf, *event_pf;
1365 u8 prim_port, event_port;
1374 event_netdev = netdev_notifier_info_to_dev(ptr);
1376 event_upper = netdev_master_upper_dev_get_rcu(event_netdev);
1378 if (!netif_is_ice(event_netdev) || event_upper != lag->upper_netdev)
1381 event_np = netdev_priv(event_netdev);
1382 event_pf = event_np->vsi->back;
1383 event_port = event_pf->hw.port_info->lport;
1384 prim_port = pf->hw.port_info->lport;
1386 info = (struct netdev_notifier_bonding_info *)ptr;
1387 bonding_info = &info->bonding_info;
1389 if (!bonding_info->slave.state) {
1390 /* if no port is currently active, then nodes and filters exist
1391 * on primary port, check if we need to move them
1393 if (lag->active_port == ICE_LAG_INVALID_PORT) {
1394 if (event_port != prim_port)
1395 ice_lag_move_vf_nodes(lag, prim_port,
1397 lag->active_port = event_port;
1401 /* active port is already set and is current event port */
1402 if (lag->active_port == event_port)
1404 /* new active port */
1405 ice_lag_move_vf_nodes(lag, lag->active_port, event_port);
1406 lag->active_port = event_port;
1408 /* port not set as currently active (e.g. new active port
1409 * has already claimed the nodes and filters
1411 if (lag->active_port != event_port)
1413 /* This is the case when neither port is active (both link down)
1414 * Link down on the bond - set active port to invalid and move
1415 * nodes and filters back to primary if not already there
1417 if (event_port != prim_port)
1418 ice_lag_move_vf_nodes(lag, event_port, prim_port);
1419 lag->active_port = ICE_LAG_INVALID_PORT;
1424 * ice_lag_chk_comp - evaluate bonded interface for feature support
1425 * @lag: lag info struct
1426 * @ptr: opaque data for netdev event info
1429 ice_lag_chk_comp(struct ice_lag *lag, void *ptr)
1431 struct net_device *event_netdev, *event_upper;
1432 struct netdev_notifier_bonding_info *info;
1433 struct netdev_bonding_info *bonding_info;
1434 struct list_head *tmp;
1441 event_netdev = netdev_notifier_info_to_dev(ptr);
1443 event_upper = netdev_master_upper_dev_get_rcu(event_netdev);
1445 if (event_upper != lag->upper_netdev)
1448 dev = ice_pf_to_dev(lag->pf);
1450 /* only supporting switchdev mode for SRIOV VF LAG.
1451 * primary interface has to be in switchdev mode
1453 if (!ice_is_switchdev_running(lag->pf)) {
1454 dev_info(dev, "Primary interface not in switchdev mode - VF LAG disabled\n");
1458 info = (struct netdev_notifier_bonding_info *)ptr;
1459 bonding_info = &info->bonding_info;
1460 lag->bond_mode = bonding_info->master.bond_mode;
1461 if (lag->bond_mode != BOND_MODE_ACTIVEBACKUP) {
1462 dev_info(dev, "Bond Mode not ACTIVE-BACKUP - VF LAG disabled\n");
1466 list_for_each(tmp, lag->netdev_head) {
1467 struct ice_dcbx_cfg *dcb_cfg, *peer_dcb_cfg;
1468 struct ice_lag_netdev_list *entry;
1469 struct ice_netdev_priv *peer_np;
1470 struct net_device *peer_netdev;
1471 struct ice_vsi *vsi, *peer_vsi;
1472 struct ice_pf *peer_pf;
1474 entry = list_entry(tmp, struct ice_lag_netdev_list, node);
1475 peer_netdev = entry->netdev;
1476 if (!netif_is_ice(peer_netdev)) {
1477 dev_info(dev, "Found %s non-ice netdev in LAG - VF LAG disabled\n",
1478 netdev_name(peer_netdev));
1484 dev_info(dev, "Found more than two netdevs in LAG - VF LAG disabled\n");
1488 peer_np = netdev_priv(peer_netdev);
1489 vsi = ice_get_main_vsi(lag->pf);
1490 peer_vsi = peer_np->vsi;
1491 if (lag->pf->pdev->bus != peer_vsi->back->pdev->bus ||
1492 lag->pf->pdev->slot != peer_vsi->back->pdev->slot) {
1493 dev_info(dev, "Found %s on different device in LAG - VF LAG disabled\n",
1494 netdev_name(peer_netdev));
1498 dcb_cfg = &vsi->port_info->qos_cfg.local_dcbx_cfg;
1499 peer_dcb_cfg = &peer_vsi->port_info->qos_cfg.local_dcbx_cfg;
1500 if (memcmp(dcb_cfg, peer_dcb_cfg,
1501 sizeof(struct ice_dcbx_cfg))) {
1502 dev_info(dev, "Found %s with different DCB in LAG - VF LAG disabled\n",
1503 netdev_name(peer_netdev));
1507 peer_pf = peer_vsi->back;
1508 if (test_bit(ICE_FLAG_FW_LLDP_AGENT, peer_pf->flags)) {
1509 dev_warn(dev, "Found %s with FW LLDP agent active - VF LAG disabled\n",
1510 netdev_name(peer_netdev));
1519 * ice_lag_unregister - handle netdev unregister events
1520 * @lag: LAG info struct
1521 * @event_netdev: netdev struct for target of notifier event
1524 ice_lag_unregister(struct ice_lag *lag, struct net_device *event_netdev)
1526 struct ice_netdev_priv *np;
1527 struct ice_pf *event_pf;
1528 struct ice_lag *p_lag;
1530 p_lag = ice_lag_find_primary(lag);
1531 np = netdev_priv(event_netdev);
1532 event_pf = np->vsi->back;
1535 if (p_lag->active_port != p_lag->pf->hw.port_info->lport &&
1536 p_lag->active_port != ICE_LAG_INVALID_PORT) {
1537 struct ice_hw *active_hw;
1539 active_hw = ice_lag_find_hw_by_lport(lag,
1540 p_lag->active_port);
1542 ice_lag_reclaim_vf_nodes(p_lag, active_hw);
1543 lag->active_port = ICE_LAG_INVALID_PORT;
1547 /* primary processing for primary */
1548 if (lag->primary && lag->netdev == event_netdev)
1549 ice_lag_primary_swid(lag, false);
1551 /* primary processing for secondary */
1552 if (lag->primary && lag->netdev != event_netdev)
1553 ice_lag_del_prune_list(lag, event_pf);
1555 /* secondary processing for secondary */
1556 if (!lag->primary && lag->netdev == event_netdev)
1557 ice_lag_set_swid(0, lag, false);
1561 * ice_lag_monitor_rdma - set and clear rdma functionality
1562 * @lag: pointer to lag struct
1563 * @ptr: opaque data for netdev event info
1566 ice_lag_monitor_rdma(struct ice_lag *lag, void *ptr)
1568 struct netdev_notifier_changeupper_info *info;
1569 struct net_device *netdev;
1572 netdev = netdev_notifier_info_to_dev(ptr);
1574 if (netdev != lag->netdev)
1578 ice_clear_rdma_cap(lag->pf);
1580 ice_set_rdma_cap(lag->pf);
1584 * ice_lag_chk_disabled_bond - monitor interfaces entering/leaving disabled bond
1585 * @lag: lag info struct
1586 * @ptr: opaque data containing event
1588 * as interfaces enter a bond - determine if the bond is currently
1589 * SRIOV LAG compliant and flag if not. As interfaces leave the
1590 * bond, reset their compliant status.
1592 static void ice_lag_chk_disabled_bond(struct ice_lag *lag, void *ptr)
1594 struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
1595 struct netdev_notifier_changeupper_info *info = ptr;
1596 struct ice_lag *prim_lag;
1598 if (netdev != lag->netdev)
1601 if (info->linking) {
1602 prim_lag = ice_lag_find_primary(lag);
1604 !ice_is_feature_supported(prim_lag->pf, ICE_F_SRIOV_LAG)) {
1605 ice_clear_feature_support(lag->pf, ICE_F_SRIOV_LAG);
1606 netdev_info(netdev, "Interface added to non-compliant SRIOV LAG aggregate\n");
1609 ice_lag_init_feature_support_flag(lag->pf);
1614 * ice_lag_disable_sriov_bond - set members of bond as not supporting SRIOV LAG
1615 * @lag: primary interfaces lag struct
1617 static void ice_lag_disable_sriov_bond(struct ice_lag *lag)
1619 struct ice_netdev_priv *np;
1622 np = netdev_priv(lag->netdev);
1624 ice_clear_feature_support(pf, ICE_F_SRIOV_LAG);
1628 * ice_lag_process_event - process a task assigned to the lag_wq
1629 * @work: pointer to work_struct
1631 static void ice_lag_process_event(struct work_struct *work)
1633 struct netdev_notifier_changeupper_info *info;
1634 struct ice_lag_work *lag_work;
1635 struct net_device *netdev;
1636 struct list_head *tmp, *n;
1639 lag_work = container_of(work, struct ice_lag_work, lag_task);
1640 pf = lag_work->lag->pf;
1642 mutex_lock(&pf->lag_mutex);
1643 lag_work->lag->netdev_head = &lag_work->netdev_list.node;
1645 switch (lag_work->event) {
1646 case NETDEV_CHANGEUPPER:
1647 info = &lag_work->info.changeupper_info;
1648 ice_lag_chk_disabled_bond(lag_work->lag, info);
1649 if (ice_is_feature_supported(pf, ICE_F_SRIOV_LAG)) {
1650 ice_lag_monitor_link(lag_work->lag, info);
1651 ice_lag_changeupper_event(lag_work->lag, info);
1652 ice_lag_link_unlink(lag_work->lag, info);
1654 ice_lag_monitor_rdma(lag_work->lag, info);
1656 case NETDEV_BONDING_INFO:
1657 if (ice_is_feature_supported(pf, ICE_F_SRIOV_LAG)) {
1658 if (!ice_lag_chk_comp(lag_work->lag,
1659 &lag_work->info.bonding_info)) {
1660 netdev = lag_work->info.bonding_info.info.dev;
1661 ice_lag_disable_sriov_bond(lag_work->lag);
1662 ice_lag_unregister(lag_work->lag, netdev);
1665 ice_lag_monitor_active(lag_work->lag,
1666 &lag_work->info.bonding_info);
1667 ice_lag_cfg_pf_fltrs(lag_work->lag,
1668 &lag_work->info.bonding_info);
1670 ice_lag_info_event(lag_work->lag, &lag_work->info.bonding_info);
1672 case NETDEV_UNREGISTER:
1673 if (ice_is_feature_supported(pf, ICE_F_SRIOV_LAG)) {
1674 netdev = lag_work->info.bonding_info.info.dev;
1675 if ((netdev == lag_work->lag->netdev ||
1676 lag_work->lag->primary) && lag_work->lag->bonded)
1677 ice_lag_unregister(lag_work->lag, netdev);
1685 /* cleanup resources allocated for this work item */
1686 list_for_each_safe(tmp, n, &lag_work->netdev_list.node) {
1687 struct ice_lag_netdev_list *entry;
1689 entry = list_entry(tmp, struct ice_lag_netdev_list, node);
1690 list_del(&entry->node);
1693 lag_work->lag->netdev_head = NULL;
1695 mutex_unlock(&pf->lag_mutex);
1701 * ice_lag_event_handler - handle LAG events from netdev
1702 * @notif_blk: notifier block registered by this netdev
1703 * @event: event type
1704 * @ptr: opaque data containing notifier event
1707 ice_lag_event_handler(struct notifier_block *notif_blk, unsigned long event,
1710 struct net_device *netdev = netdev_notifier_info_to_dev(ptr);
1711 struct net_device *upper_netdev;
1712 struct ice_lag_work *lag_work;
1713 struct ice_lag *lag;
1715 if (!netif_is_ice(netdev))
1718 if (event != NETDEV_CHANGEUPPER && event != NETDEV_BONDING_INFO &&
1719 event != NETDEV_UNREGISTER)
1722 if (!(netdev->priv_flags & IFF_BONDING))
1725 lag = container_of(notif_blk, struct ice_lag, notif_block);
1729 if (!net_eq(dev_net(netdev), &init_net))
1732 /* This memory will be freed at the end of ice_lag_process_event */
1733 lag_work = kzalloc(sizeof(*lag_work), GFP_KERNEL);
1737 lag_work->event_netdev = netdev;
1738 lag_work->lag = lag;
1739 lag_work->event = event;
1740 if (event == NETDEV_CHANGEUPPER) {
1741 struct netdev_notifier_changeupper_info *info;
1744 upper_netdev = info->upper_dev;
1746 upper_netdev = netdev_master_upper_dev_get(netdev);
1749 INIT_LIST_HEAD(&lag_work->netdev_list.node);
1751 struct ice_lag_netdev_list *nd_list;
1752 struct net_device *tmp_nd;
1755 for_each_netdev_in_bond_rcu(upper_netdev, tmp_nd) {
1756 nd_list = kzalloc(sizeof(*nd_list), GFP_ATOMIC);
1760 nd_list->netdev = tmp_nd;
1761 list_add(&nd_list->node, &lag_work->netdev_list.node);
1767 case NETDEV_CHANGEUPPER:
1768 lag_work->info.changeupper_info =
1769 *((struct netdev_notifier_changeupper_info *)ptr);
1771 case NETDEV_BONDING_INFO:
1772 lag_work->info.bonding_info =
1773 *((struct netdev_notifier_bonding_info *)ptr);
1776 lag_work->info.notifier_info =
1777 *((struct netdev_notifier_info *)ptr);
1781 INIT_WORK(&lag_work->lag_task, ice_lag_process_event);
1782 queue_work(ice_lag_wq, &lag_work->lag_task);
1788 * ice_register_lag_handler - register LAG handler on netdev
1791 static int ice_register_lag_handler(struct ice_lag *lag)
1793 struct device *dev = ice_pf_to_dev(lag->pf);
1794 struct notifier_block *notif_blk;
1796 notif_blk = &lag->notif_block;
1798 if (!notif_blk->notifier_call) {
1799 notif_blk->notifier_call = ice_lag_event_handler;
1800 if (register_netdevice_notifier(notif_blk)) {
1801 notif_blk->notifier_call = NULL;
1802 dev_err(dev, "FAIL register LAG event handler!\n");
1805 dev_dbg(dev, "LAG event handler registered\n");
1811 * ice_unregister_lag_handler - unregister LAG handler on netdev
1814 static void ice_unregister_lag_handler(struct ice_lag *lag)
1816 struct device *dev = ice_pf_to_dev(lag->pf);
1817 struct notifier_block *notif_blk;
1819 notif_blk = &lag->notif_block;
1820 if (notif_blk->notifier_call) {
1821 unregister_netdevice_notifier(notif_blk);
1822 dev_dbg(dev, "LAG event handler unregistered\n");
1827 * ice_create_lag_recipe
1828 * @hw: pointer to HW struct
1829 * @rid: pointer to u16 to pass back recipe index
1830 * @base_recipe: recipe to base the new recipe on
1831 * @prio: priority for new recipe
1833 * function returns 0 on error
1835 static int ice_create_lag_recipe(struct ice_hw *hw, u16 *rid,
1836 const u8 *base_recipe, u8 prio)
1838 struct ice_aqc_recipe_data_elem *new_rcp;
1841 err = ice_alloc_recipe(hw, rid);
1845 new_rcp = kzalloc(ICE_RECIPE_LEN * ICE_MAX_NUM_RECIPES, GFP_KERNEL);
1849 memcpy(new_rcp, base_recipe, ICE_RECIPE_LEN);
1850 new_rcp->content.act_ctrl_fwd_priority = prio;
1851 new_rcp->content.rid = *rid | ICE_AQ_RECIPE_ID_IS_ROOT;
1852 new_rcp->recipe_indx = *rid;
1853 bitmap_zero((unsigned long *)new_rcp->recipe_bitmap,
1854 ICE_MAX_NUM_RECIPES);
1855 set_bit(*rid, (unsigned long *)new_rcp->recipe_bitmap);
1857 err = ice_aq_add_recipe(hw, new_rcp, 1, NULL);
1866 * ice_lag_move_vf_nodes_tc_sync - move a VF's nodes for a tc during reset
1867 * @lag: primary interfaces lag struct
1868 * @dest_hw: HW struct for destination's interface
1869 * @vsi_num: VSI index in PF space
1870 * @tc: traffic class to move
1873 ice_lag_move_vf_nodes_tc_sync(struct ice_lag *lag, struct ice_hw *dest_hw,
1876 DEFINE_RAW_FLEX(struct ice_aqc_move_elem, buf, teid, 1);
1877 struct device *dev = ice_pf_to_dev(lag->pf);
1878 u16 numq, valq, num_moved, qbuf_size;
1879 u16 buf_size = __struct_size(buf);
1880 struct ice_aqc_cfg_txqs_buf *qbuf;
1881 struct ice_sched_node *n_prt;
1882 __le32 teid, parent_teid;
1883 struct ice_vsi_ctx *ctx;
1888 ctx = ice_get_vsi_ctx(hw, vsi_num);
1890 dev_warn(dev, "LAG rebuild failed after reset due to VSI Context failure\n");
1894 if (!ctx->sched.vsi_node[tc])
1897 numq = ctx->num_lan_q_entries[tc];
1898 teid = ctx->sched.vsi_node[tc]->info.node_teid;
1899 tmp_teid = le32_to_cpu(teid);
1900 parent_teid = ctx->sched.vsi_node[tc]->info.parent_teid;
1902 if (!tmp_teid || !numq)
1905 if (ice_sched_suspend_resume_elems(hw, 1, &tmp_teid, true))
1906 dev_dbg(dev, "Problem suspending traffic during reset rebuild\n");
1908 /* reconfig queues for new port */
1909 qbuf_size = struct_size(qbuf, queue_info, numq);
1910 qbuf = kzalloc(qbuf_size, GFP_KERNEL);
1912 dev_warn(dev, "Failure allocating VF queue recfg buffer for reset rebuild\n");
1916 /* add the per queue info for the reconfigure command buffer */
1917 valq = ice_lag_qbuf_recfg(hw, qbuf, vsi_num, numq, tc);
1919 dev_warn(dev, "Failure to reconfig queues for LAG reset rebuild\n");
1923 if (ice_aq_cfg_lan_txq(hw, qbuf, qbuf_size, numq, hw->port_info->lport,
1924 dest_hw->port_info->lport, NULL)) {
1925 dev_warn(dev, "Failure to configure queues for LAG reset rebuild\n");
1932 /* find parent in destination tree */
1933 n_prt = ice_lag_get_sched_parent(dest_hw, tc);
1937 /* Move node to new parent */
1938 buf->hdr.src_parent_teid = parent_teid;
1939 buf->hdr.dest_parent_teid = n_prt->info.node_teid;
1940 buf->hdr.num_elems = cpu_to_le16(1);
1941 buf->hdr.mode = ICE_AQC_MOVE_ELEM_MODE_KEEP_OWN;
1942 buf->teid[0] = teid;
1944 if (ice_aq_move_sched_elems(&lag->pf->hw, buf, buf_size, &num_moved))
1945 dev_warn(dev, "Failure to move VF nodes for LAG reset rebuild\n");
1947 ice_sched_update_parent(n_prt, ctx->sched.vsi_node[tc]);
1955 if (ice_sched_suspend_resume_elems(hw, 1, &tmp_teid, false))
1956 dev_warn(dev, "Problem restarting traffic for LAG node reset rebuild\n");
1960 * ice_lag_move_vf_nodes_sync - move vf nodes to active interface
1961 * @lag: primary interfaces lag struct
1962 * @dest_hw: lport value for currently active port
1964 * This function is used in a reset context, outside of event handling,
1965 * to move the VF nodes to the secondary interface when that interface
1966 * is the active interface during a reset rebuild
1969 ice_lag_move_vf_nodes_sync(struct ice_lag *lag, struct ice_hw *dest_hw)
1974 if (!lag->primary || !dest_hw)
1978 ice_for_each_vsi(pf, i)
1979 if (pf->vsi[i] && (pf->vsi[i]->type == ICE_VSI_VF ||
1980 pf->vsi[i]->type == ICE_VSI_SWITCHDEV_CTRL))
1981 ice_for_each_traffic_class(tc)
1982 ice_lag_move_vf_nodes_tc_sync(lag, dest_hw, i,
1987 * ice_init_lag - initialize support for LAG
1990 * Alloc memory for LAG structs and initialize the elements.
1991 * Memory will be freed in ice_deinit_lag
1993 int ice_init_lag(struct ice_pf *pf)
1995 struct device *dev = ice_pf_to_dev(pf);
1996 struct ice_lag *lag;
1997 struct ice_vsi *vsi;
1998 u64 recipe_bits = 0;
2001 ice_lag_init_feature_support_flag(pf);
2002 if (!ice_is_feature_supported(pf, ICE_F_SRIOV_LAG))
2005 pf->lag = kzalloc(sizeof(*lag), GFP_KERNEL);
2010 vsi = ice_get_main_vsi(pf);
2012 dev_err(dev, "couldn't get main vsi, link aggregation init fail\n");
2018 lag->netdev = vsi->netdev;
2019 lag->role = ICE_LAG_NONE;
2020 lag->active_port = ICE_LAG_INVALID_PORT;
2021 lag->bonded = false;
2022 lag->upper_netdev = NULL;
2023 lag->notif_block.notifier_call = NULL;
2025 err = ice_register_lag_handler(lag);
2027 dev_warn(dev, "INIT LAG: Failed to register event handler\n");
2031 err = ice_create_lag_recipe(&pf->hw, &lag->pf_recipe,
2032 ice_dflt_vsi_rcp, 1);
2036 err = ice_create_lag_recipe(&pf->hw, &lag->lport_recipe,
2041 /* associate recipes to profiles */
2042 for (n = 0; n < ICE_PROFID_IPV6_GTPU_IPV6_TCP_INNER; n++) {
2043 err = ice_aq_get_recipe_to_profile(&pf->hw, n,
2044 &recipe_bits, NULL);
2048 if (recipe_bits & BIT(ICE_SW_LKUP_DFLT)) {
2049 recipe_bits |= BIT(lag->pf_recipe) |
2050 BIT(lag->lport_recipe);
2051 ice_aq_map_recipe_to_profile(&pf->hw, n,
2056 ice_display_lag_info(lag);
2058 dev_dbg(dev, "INIT LAG complete\n");
2062 ice_free_hw_res(&pf->hw, ICE_AQC_RES_TYPE_RECIPE, 1,
2063 &pf->lag->pf_recipe);
2071 * ice_deinit_lag - Clean up LAG
2074 * Clean up kernel LAG info and free memory
2075 * This function is meant to only be called on driver remove/shutdown
2077 void ice_deinit_lag(struct ice_pf *pf)
2079 struct ice_lag *lag;
2087 ice_unregister_lag_handler(lag);
2089 flush_workqueue(ice_lag_wq);
2091 ice_free_hw_res(&pf->hw, ICE_AQC_RES_TYPE_RECIPE, 1,
2092 &pf->lag->pf_recipe);
2093 ice_free_hw_res(&pf->hw, ICE_AQC_RES_TYPE_RECIPE, 1,
2094 &pf->lag->lport_recipe);
2102 * ice_lag_rebuild - rebuild lag resources after reset
2103 * @pf: pointer to local pf struct
2105 * PF resets are promoted to CORER resets when interface in an aggregate. This
2106 * means that we need to rebuild the PF resources for the interface. Since
2107 * this will happen outside the normal event processing, need to acquire the lag
2110 * This function will also evaluate the VF resources if this is the primary
2113 void ice_lag_rebuild(struct ice_pf *pf)
2115 struct ice_lag_netdev_list ndlist;
2116 struct ice_lag *lag, *prim_lag;
2117 u8 act_port, loc_port;
2119 if (!pf->lag || !pf->lag->bonded)
2122 mutex_lock(&pf->lag_mutex);
2128 ice_lag_build_netdev_list(lag, &ndlist);
2129 prim_lag = ice_lag_find_primary(lag);
2133 dev_dbg(ice_pf_to_dev(pf), "No primary interface in aggregate, can't rebuild\n");
2134 goto lag_rebuild_out;
2137 act_port = prim_lag->active_port;
2138 loc_port = lag->pf->hw.port_info->lport;
2140 /* configure SWID for this port */
2142 ice_lag_primary_swid(lag, true);
2144 ice_lag_set_swid(prim_lag->pf->hw.port_info->sw_id, lag, true);
2145 ice_lag_add_prune_list(prim_lag, pf);
2146 if (act_port == loc_port)
2147 ice_lag_move_vf_nodes_sync(prim_lag, &pf->hw);
2150 ice_lag_cfg_cp_fltr(lag, true);
2152 if (lag->pf_rule_id)
2153 if (ice_lag_cfg_dflt_fltr(lag, true))
2154 dev_err(ice_pf_to_dev(pf), "Error adding default VSI rule in rebuild\n");
2156 ice_clear_rdma_cap(pf);
2158 ice_lag_destroy_netdev_list(lag, &ndlist);
2159 mutex_unlock(&pf->lag_mutex);
2163 * ice_lag_is_switchdev_running
2164 * @pf: pointer to PF structure
2166 * Check if switchdev is running on any of the interfaces connected to lag.
2168 bool ice_lag_is_switchdev_running(struct ice_pf *pf)
2170 struct ice_lag *lag = pf->lag;
2171 struct net_device *tmp_nd;
2173 if (!ice_is_feature_supported(pf, ICE_F_SRIOV_LAG) || !lag)
2177 for_each_netdev_in_bond_rcu(lag->upper_netdev, tmp_nd) {
2178 struct ice_netdev_priv *priv = netdev_priv(tmp_nd);
2180 if (!netif_is_ice(tmp_nd) || !priv || !priv->vsi ||
2184 if (ice_is_switchdev_running(priv->vsi->back)) {