2 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/hash.h>
34 #include <linux/mlx5/fs.h>
36 #include <linux/ipv6.h>
40 #define ARFS_HASH_SHIFT BITS_PER_BYTE
41 #define ARFS_HASH_SIZE BIT(BITS_PER_BYTE)
44 struct mlx5e_flow_table ft;
45 struct mlx5_flow_handle *default_rule;
46 struct hlist_head rules_hash[ARFS_HASH_SIZE];
50 MLX5E_ARFS_STATE_ENABLED,
61 struct mlx5e_arfs_tables {
62 struct arfs_table arfs_tables[ARFS_NUM_TYPES];
63 /* Protect aRFS rules list */
66 struct workqueue_struct *wq;
75 struct in6_addr src_ipv6;
79 struct in6_addr dst_ipv6;
86 struct mlx5e_priv *priv;
87 struct work_struct arfs_work;
88 struct mlx5_flow_handle *rule;
89 struct hlist_node hlist;
91 /* Flow ID passed to ndo_rx_flow_steer */
93 /* Filter ID returned by ndo_rx_flow_steer */
95 struct arfs_tuple tuple;
98 #define mlx5e_for_each_arfs_rule(hn, tmp, arfs_tables, i, j) \
99 for (i = 0; i < ARFS_NUM_TYPES; i++) \
100 mlx5e_for_each_hash_arfs_rule(hn, tmp, arfs_tables[i].rules_hash, j)
102 #define mlx5e_for_each_hash_arfs_rule(hn, tmp, hash, j) \
103 for (j = 0; j < ARFS_HASH_SIZE; j++) \
104 hlist_for_each_entry_safe(hn, tmp, &hash[j], hlist)
106 static enum mlx5_traffic_types arfs_get_tt(enum arfs_type type)
110 return MLX5_TT_IPV4_TCP;
112 return MLX5_TT_IPV4_UDP;
114 return MLX5_TT_IPV6_TCP;
116 return MLX5_TT_IPV6_UDP;
122 static int arfs_disable(struct mlx5e_flow_steering *fs)
124 struct mlx5_ttc_table *ttc = mlx5e_fs_get_ttc(fs, false);
127 for (i = 0; i < ARFS_NUM_TYPES; i++) {
128 /* Modify ttc rules destination back to their default */
129 err = mlx5_ttc_fwd_default_dest(ttc, arfs_get_tt(i));
132 "%s: modify ttc[%d] default destination failed, err(%d)\n",
133 __func__, arfs_get_tt(i), err);
140 static void arfs_del_rules(struct mlx5e_flow_steering *fs);
142 int mlx5e_arfs_disable(struct mlx5e_flow_steering *fs)
144 /* Moving to switchdev mode, fs->arfs is freed by mlx5e_nic_profile
145 * cleanup_rx callback and it is not recreated when
146 * mlx5e_uplink_rep_profile is loaded as mlx5e_create_flow_steering()
147 * is not called by the uplink_rep profile init_rx callback. Thus, if
148 * ntuple is set, moving to switchdev flow will enter this function
149 * with fs->arfs nullified.
151 if (!mlx5e_fs_get_arfs(fs))
156 return arfs_disable(fs);
159 int mlx5e_arfs_enable(struct mlx5e_flow_steering *fs)
161 struct mlx5_ttc_table *ttc = mlx5e_fs_get_ttc(fs, false);
162 struct mlx5e_arfs_tables *arfs = mlx5e_fs_get_arfs(fs);
163 struct mlx5_flow_destination dest = {};
166 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
167 for (i = 0; i < ARFS_NUM_TYPES; i++) {
168 dest.ft = arfs->arfs_tables[i].ft.t;
169 /* Modify ttc rules destination to point on the aRFS FTs */
170 err = mlx5_ttc_fwd_dest(ttc, arfs_get_tt(i), &dest);
172 fs_err(fs, "%s: modify ttc[%d] dest to arfs, failed err(%d)\n",
173 __func__, arfs_get_tt(i), err);
178 set_bit(MLX5E_ARFS_STATE_ENABLED, &arfs->state);
183 static void arfs_destroy_table(struct arfs_table *arfs_t)
185 mlx5_del_flow_rules(arfs_t->default_rule);
186 mlx5e_destroy_flow_table(&arfs_t->ft);
189 static void _mlx5e_cleanup_tables(struct mlx5e_flow_steering *fs)
191 struct mlx5e_arfs_tables *arfs = mlx5e_fs_get_arfs(fs);
195 destroy_workqueue(arfs->wq);
196 for (i = 0; i < ARFS_NUM_TYPES; i++) {
197 if (!IS_ERR_OR_NULL(arfs->arfs_tables[i].ft.t))
198 arfs_destroy_table(&arfs->arfs_tables[i]);
202 void mlx5e_arfs_destroy_tables(struct mlx5e_flow_steering *fs, bool ntuple)
204 struct mlx5e_arfs_tables *arfs = mlx5e_fs_get_arfs(fs);
209 _mlx5e_cleanup_tables(fs);
210 mlx5e_fs_set_arfs(fs, NULL);
214 static int arfs_add_default_rule(struct mlx5e_flow_steering *fs,
215 struct mlx5e_rx_res *rx_res,
218 struct mlx5e_arfs_tables *arfs = mlx5e_fs_get_arfs(fs);
219 struct arfs_table *arfs_t = &arfs->arfs_tables[type];
220 struct mlx5_flow_destination dest = {};
221 MLX5_DECLARE_FLOW_ACT(flow_act);
222 enum mlx5_traffic_types tt;
225 dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
226 tt = arfs_get_tt(type);
228 fs_err(fs, "%s: bad arfs_type: %d\n", __func__, type);
232 /* FIXME: Must use mlx5_ttc_get_default_dest(),
233 * but can't since TTC default is not setup yet !
235 dest.tir_num = mlx5e_rx_res_get_tirn_rss(rx_res, tt);
236 arfs_t->default_rule = mlx5_add_flow_rules(arfs_t->ft.t, NULL,
239 if (IS_ERR(arfs_t->default_rule)) {
240 err = PTR_ERR(arfs_t->default_rule);
241 arfs_t->default_rule = NULL;
242 fs_err(fs, "%s: add rule failed, arfs type=%d\n", __func__, type);
248 #define MLX5E_ARFS_NUM_GROUPS 2
249 #define MLX5E_ARFS_GROUP1_SIZE (BIT(16) - 1)
250 #define MLX5E_ARFS_GROUP2_SIZE BIT(0)
251 #define MLX5E_ARFS_TABLE_SIZE (MLX5E_ARFS_GROUP1_SIZE +\
252 MLX5E_ARFS_GROUP2_SIZE)
253 static int arfs_create_groups(struct mlx5e_flow_table *ft,
256 int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);
257 void *outer_headers_c;
263 ft->g = kcalloc(MLX5E_ARFS_NUM_GROUPS,
264 sizeof(*ft->g), GFP_KERNEL);
268 in = kvzalloc(inlen, GFP_KERNEL);
274 mc = MLX5_ADDR_OF(create_flow_group_in, in, match_criteria);
275 outer_headers_c = MLX5_ADDR_OF(fte_match_param, mc,
277 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c, ethertype);
281 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c, tcp_dport);
282 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c, tcp_sport);
286 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c, udp_dport);
287 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c, udp_sport);
297 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c,
298 src_ipv4_src_ipv6.ipv4_layout.ipv4);
299 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, outer_headers_c,
300 dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
304 memset(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
305 src_ipv4_src_ipv6.ipv6_layout.ipv6),
307 memset(MLX5_ADDR_OF(fte_match_set_lyr_2_4, outer_headers_c,
308 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
316 MLX5_SET_CFG(in, match_criteria_enable, MLX5_MATCH_OUTER_HEADERS);
317 MLX5_SET_CFG(in, start_flow_index, ix);
318 ix += MLX5E_ARFS_GROUP1_SIZE;
319 MLX5_SET_CFG(in, end_flow_index, ix - 1);
320 ft->g[ft->num_groups] = mlx5_create_flow_group(ft->t, in);
321 if (IS_ERR(ft->g[ft->num_groups]))
322 goto err_clean_group;
325 memset(in, 0, inlen);
326 MLX5_SET_CFG(in, start_flow_index, ix);
327 ix += MLX5E_ARFS_GROUP2_SIZE;
328 MLX5_SET_CFG(in, end_flow_index, ix - 1);
329 ft->g[ft->num_groups] = mlx5_create_flow_group(ft->t, in);
330 if (IS_ERR(ft->g[ft->num_groups]))
331 goto err_clean_group;
338 err = PTR_ERR(ft->g[ft->num_groups]);
339 ft->g[ft->num_groups] = NULL;
348 static int arfs_create_table(struct mlx5e_flow_steering *fs,
349 struct mlx5e_rx_res *rx_res,
352 struct mlx5_flow_namespace *ns = mlx5e_fs_get_ns(fs, false);
353 struct mlx5e_arfs_tables *arfs = mlx5e_fs_get_arfs(fs);
354 struct mlx5e_flow_table *ft = &arfs->arfs_tables[type].ft;
355 struct mlx5_flow_table_attr ft_attr = {};
360 ft_attr.max_fte = MLX5E_ARFS_TABLE_SIZE;
361 ft_attr.level = MLX5E_ARFS_FT_LEVEL;
362 ft_attr.prio = MLX5E_NIC_PRIO;
364 ft->t = mlx5_create_flow_table(ns, &ft_attr);
366 err = PTR_ERR(ft->t);
371 err = arfs_create_groups(ft, type);
375 err = arfs_add_default_rule(fs, rx_res, type);
381 mlx5e_destroy_flow_table(ft);
385 int mlx5e_arfs_create_tables(struct mlx5e_flow_steering *fs,
386 struct mlx5e_rx_res *rx_res, bool ntuple)
388 struct mlx5e_arfs_tables *arfs;
395 arfs = kvzalloc(sizeof(*arfs), GFP_KERNEL);
399 spin_lock_init(&arfs->arfs_lock);
400 arfs->wq = create_singlethread_workqueue("mlx5e_arfs");
404 mlx5e_fs_set_arfs(fs, arfs);
406 for (i = 0; i < ARFS_NUM_TYPES; i++) {
407 err = arfs_create_table(fs, rx_res, i);
414 _mlx5e_cleanup_tables(fs);
416 mlx5e_fs_set_arfs(fs, NULL);
421 #define MLX5E_ARFS_EXPIRY_QUOTA 60
423 static void arfs_may_expire_flow(struct mlx5e_priv *priv)
425 struct mlx5e_arfs_tables *arfs = mlx5e_fs_get_arfs(priv->fs);
426 struct arfs_rule *arfs_rule;
427 struct hlist_node *htmp;
428 HLIST_HEAD(del_list);
433 spin_lock_bh(&arfs->arfs_lock);
434 mlx5e_for_each_arfs_rule(arfs_rule, htmp, arfs->arfs_tables, i, j) {
435 if (!work_pending(&arfs_rule->arfs_work) &&
436 rps_may_expire_flow(priv->netdev,
437 arfs_rule->rxq, arfs_rule->flow_id,
438 arfs_rule->filter_id)) {
439 hlist_del_init(&arfs_rule->hlist);
440 hlist_add_head(&arfs_rule->hlist, &del_list);
441 if (quota++ > MLX5E_ARFS_EXPIRY_QUOTA)
445 spin_unlock_bh(&arfs->arfs_lock);
446 hlist_for_each_entry_safe(arfs_rule, htmp, &del_list, hlist) {
447 if (arfs_rule->rule) {
448 mlx5_del_flow_rules(arfs_rule->rule);
449 priv->channel_stats[arfs_rule->rxq]->rq.arfs_expired++;
451 hlist_del(&arfs_rule->hlist);
456 static void arfs_del_rules(struct mlx5e_flow_steering *fs)
458 struct mlx5e_arfs_tables *arfs = mlx5e_fs_get_arfs(fs);
459 struct hlist_node *htmp;
460 struct arfs_rule *rule;
461 HLIST_HEAD(del_list);
465 clear_bit(MLX5E_ARFS_STATE_ENABLED, &arfs->state);
467 spin_lock_bh(&arfs->arfs_lock);
468 mlx5e_for_each_arfs_rule(rule, htmp, arfs->arfs_tables, i, j) {
469 hlist_del_init(&rule->hlist);
470 hlist_add_head(&rule->hlist, &del_list);
472 spin_unlock_bh(&arfs->arfs_lock);
474 hlist_for_each_entry_safe(rule, htmp, &del_list, hlist) {
475 cancel_work_sync(&rule->arfs_work);
477 mlx5_del_flow_rules(rule->rule);
478 hlist_del(&rule->hlist);
483 static struct hlist_head *
484 arfs_hash_bucket(struct arfs_table *arfs_t, __be16 src_port,
490 l = (__force unsigned long)src_port |
491 ((__force unsigned long)dst_port << 2);
493 bucket_idx = hash_long(l, ARFS_HASH_SHIFT);
495 return &arfs_t->rules_hash[bucket_idx];
498 static struct arfs_table *arfs_get_table(struct mlx5e_arfs_tables *arfs,
499 u8 ip_proto, __be16 etype)
501 if (etype == htons(ETH_P_IP) && ip_proto == IPPROTO_TCP)
502 return &arfs->arfs_tables[ARFS_IPV4_TCP];
503 if (etype == htons(ETH_P_IP) && ip_proto == IPPROTO_UDP)
504 return &arfs->arfs_tables[ARFS_IPV4_UDP];
505 if (etype == htons(ETH_P_IPV6) && ip_proto == IPPROTO_TCP)
506 return &arfs->arfs_tables[ARFS_IPV6_TCP];
507 if (etype == htons(ETH_P_IPV6) && ip_proto == IPPROTO_UDP)
508 return &arfs->arfs_tables[ARFS_IPV6_UDP];
513 static struct mlx5_flow_handle *arfs_add_rule(struct mlx5e_priv *priv,
514 struct arfs_rule *arfs_rule)
516 struct mlx5e_arfs_tables *arfs = mlx5e_fs_get_arfs(priv->fs);
517 struct arfs_tuple *tuple = &arfs_rule->tuple;
518 struct mlx5_flow_handle *rule = NULL;
519 struct mlx5_flow_destination dest = {};
520 MLX5_DECLARE_FLOW_ACT(flow_act);
521 struct arfs_table *arfs_table;
522 struct mlx5_flow_spec *spec;
523 struct mlx5_flow_table *ft;
526 spec = kvzalloc(sizeof(*spec), GFP_KERNEL);
528 priv->channel_stats[arfs_rule->rxq]->rq.arfs_err++;
532 spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
533 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
534 outer_headers.ethertype);
535 MLX5_SET(fte_match_param, spec->match_value, outer_headers.ethertype,
536 ntohs(tuple->etype));
537 arfs_table = arfs_get_table(arfs, tuple->ip_proto, tuple->etype);
539 WARN_ONCE(1, "arfs table does not exist for etype %u and ip_proto %u\n",
540 tuple->etype, tuple->ip_proto);
545 ft = arfs_table->ft.t;
546 if (tuple->ip_proto == IPPROTO_TCP) {
547 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
548 outer_headers.tcp_dport);
549 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
550 outer_headers.tcp_sport);
551 MLX5_SET(fte_match_param, spec->match_value, outer_headers.tcp_dport,
552 ntohs(tuple->dst_port));
553 MLX5_SET(fte_match_param, spec->match_value, outer_headers.tcp_sport,
554 ntohs(tuple->src_port));
556 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
557 outer_headers.udp_dport);
558 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
559 outer_headers.udp_sport);
560 MLX5_SET(fte_match_param, spec->match_value, outer_headers.udp_dport,
561 ntohs(tuple->dst_port));
562 MLX5_SET(fte_match_param, spec->match_value, outer_headers.udp_sport,
563 ntohs(tuple->src_port));
565 if (tuple->etype == htons(ETH_P_IP)) {
566 memcpy(MLX5_ADDR_OF(fte_match_param, spec->match_value,
567 outer_headers.src_ipv4_src_ipv6.ipv4_layout.ipv4),
570 memcpy(MLX5_ADDR_OF(fte_match_param, spec->match_value,
571 outer_headers.dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
574 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
575 outer_headers.src_ipv4_src_ipv6.ipv4_layout.ipv4);
576 MLX5_SET_TO_ONES(fte_match_param, spec->match_criteria,
577 outer_headers.dst_ipv4_dst_ipv6.ipv4_layout.ipv4);
579 memcpy(MLX5_ADDR_OF(fte_match_param, spec->match_value,
580 outer_headers.src_ipv4_src_ipv6.ipv6_layout.ipv6),
583 memcpy(MLX5_ADDR_OF(fte_match_param, spec->match_value,
584 outer_headers.dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
587 memset(MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
588 outer_headers.src_ipv4_src_ipv6.ipv6_layout.ipv6),
591 memset(MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
592 outer_headers.dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
596 dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
597 dest.tir_num = mlx5e_rx_res_get_tirn_direct(priv->rx_res, arfs_rule->rxq);
598 rule = mlx5_add_flow_rules(ft, spec, &flow_act, &dest, 1);
601 priv->channel_stats[arfs_rule->rxq]->rq.arfs_err++;
602 netdev_dbg(priv->netdev,
603 "%s: add rule(filter id=%d, rq idx=%d, ip proto=0x%x) failed,err=%d\n",
604 __func__, arfs_rule->filter_id, arfs_rule->rxq,
605 tuple->ip_proto, err);
610 return err ? ERR_PTR(err) : rule;
613 static void arfs_modify_rule_rq(struct mlx5e_priv *priv,
614 struct mlx5_flow_handle *rule, u16 rxq)
616 struct mlx5_flow_destination dst = {};
619 dst.type = MLX5_FLOW_DESTINATION_TYPE_TIR;
620 dst.tir_num = mlx5e_rx_res_get_tirn_direct(priv->rx_res, rxq);
621 err = mlx5_modify_rule_destination(rule, &dst, NULL);
623 priv->channel_stats[rxq]->rq.arfs_err++;
624 netdev_warn(priv->netdev,
625 "Failed to modify aRFS rule destination to rq=%d\n", rxq);
629 static void arfs_handle_work(struct work_struct *work)
631 struct arfs_rule *arfs_rule = container_of(work,
634 struct mlx5e_priv *priv = arfs_rule->priv;
635 struct mlx5e_arfs_tables *arfs;
636 struct mlx5_flow_handle *rule;
638 arfs = mlx5e_fs_get_arfs(priv->fs);
639 if (!test_bit(MLX5E_ARFS_STATE_ENABLED, &arfs->state))
642 if (!arfs_rule->rule) {
643 rule = arfs_add_rule(priv, arfs_rule);
646 arfs_rule->rule = rule;
647 priv->channel_stats[arfs_rule->rxq]->rq.arfs_add++;
649 arfs_modify_rule_rq(priv, arfs_rule->rule,
653 arfs_may_expire_flow(priv);
656 static struct arfs_rule *arfs_alloc_rule(struct mlx5e_priv *priv,
657 struct arfs_table *arfs_t,
658 const struct flow_keys *fk,
659 u16 rxq, u32 flow_id)
661 struct mlx5e_arfs_tables *arfs = mlx5e_fs_get_arfs(priv->fs);
662 struct arfs_rule *rule;
663 struct arfs_tuple *tuple;
665 rule = kzalloc(sizeof(*rule), GFP_ATOMIC);
667 priv->channel_stats[rxq]->rq.arfs_err++;
673 INIT_WORK(&rule->arfs_work, arfs_handle_work);
675 tuple = &rule->tuple;
676 tuple->etype = fk->basic.n_proto;
677 tuple->ip_proto = fk->basic.ip_proto;
678 if (tuple->etype == htons(ETH_P_IP)) {
679 tuple->src_ipv4 = fk->addrs.v4addrs.src;
680 tuple->dst_ipv4 = fk->addrs.v4addrs.dst;
682 memcpy(&tuple->src_ipv6, &fk->addrs.v6addrs.src,
683 sizeof(struct in6_addr));
684 memcpy(&tuple->dst_ipv6, &fk->addrs.v6addrs.dst,
685 sizeof(struct in6_addr));
687 tuple->src_port = fk->ports.src;
688 tuple->dst_port = fk->ports.dst;
690 rule->flow_id = flow_id;
691 rule->filter_id = arfs->last_filter_id++ % RPS_NO_FILTER;
693 hlist_add_head(&rule->hlist,
694 arfs_hash_bucket(arfs_t, tuple->src_port,
699 static bool arfs_cmp(const struct arfs_tuple *tuple, const struct flow_keys *fk)
701 if (tuple->src_port != fk->ports.src || tuple->dst_port != fk->ports.dst)
703 if (tuple->etype != fk->basic.n_proto)
705 if (tuple->etype == htons(ETH_P_IP))
706 return tuple->src_ipv4 == fk->addrs.v4addrs.src &&
707 tuple->dst_ipv4 == fk->addrs.v4addrs.dst;
708 if (tuple->etype == htons(ETH_P_IPV6))
709 return !memcmp(&tuple->src_ipv6, &fk->addrs.v6addrs.src,
710 sizeof(struct in6_addr)) &&
711 !memcmp(&tuple->dst_ipv6, &fk->addrs.v6addrs.dst,
712 sizeof(struct in6_addr));
716 static struct arfs_rule *arfs_find_rule(struct arfs_table *arfs_t,
717 const struct flow_keys *fk)
719 struct arfs_rule *arfs_rule;
720 struct hlist_head *head;
722 head = arfs_hash_bucket(arfs_t, fk->ports.src, fk->ports.dst);
723 hlist_for_each_entry(arfs_rule, head, hlist) {
724 if (arfs_cmp(&arfs_rule->tuple, fk))
731 int mlx5e_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
732 u16 rxq_index, u32 flow_id)
734 struct mlx5e_priv *priv = netdev_priv(dev);
735 struct mlx5e_arfs_tables *arfs;
736 struct arfs_rule *arfs_rule;
737 struct arfs_table *arfs_t;
740 arfs = mlx5e_fs_get_arfs(priv->fs);
741 if (!skb_flow_dissect_flow_keys(skb, &fk, 0))
742 return -EPROTONOSUPPORT;
744 if (fk.basic.n_proto != htons(ETH_P_IP) &&
745 fk.basic.n_proto != htons(ETH_P_IPV6))
746 return -EPROTONOSUPPORT;
748 if (skb->encapsulation)
749 return -EPROTONOSUPPORT;
751 arfs_t = arfs_get_table(arfs, fk.basic.ip_proto, fk.basic.n_proto);
753 return -EPROTONOSUPPORT;
755 spin_lock_bh(&arfs->arfs_lock);
756 if (!test_bit(MLX5E_ARFS_STATE_ENABLED, &arfs->state)) {
757 spin_unlock_bh(&arfs->arfs_lock);
761 arfs_rule = arfs_find_rule(arfs_t, &fk);
763 if (arfs_rule->rxq == rxq_index || work_busy(&arfs_rule->arfs_work)) {
764 spin_unlock_bh(&arfs->arfs_lock);
765 return arfs_rule->filter_id;
768 priv->channel_stats[rxq_index]->rq.arfs_request_in++;
769 priv->channel_stats[arfs_rule->rxq]->rq.arfs_request_out++;
770 arfs_rule->rxq = rxq_index;
772 arfs_rule = arfs_alloc_rule(priv, arfs_t, &fk, rxq_index, flow_id);
774 spin_unlock_bh(&arfs->arfs_lock);
778 queue_work(arfs->wq, &arfs_rule->arfs_work);
779 spin_unlock_bh(&arfs->arfs_lock);
780 return arfs_rule->filter_id;