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 <net/flow_dissector.h>
34 #include <net/sch_generic.h>
35 #include <net/pkt_cls.h>
36 #include <net/tc_act/tc_gact.h>
37 #include <net/tc_act/tc_skbedit.h>
38 #include <linux/mlx5/fs.h>
39 #include <linux/mlx5/device.h>
40 #include <linux/rhashtable.h>
41 #include <net/switchdev.h>
42 #include <net/tc_act/tc_mirred.h>
43 #include <net/tc_act/tc_vlan.h>
44 #include <net/tc_act/tc_tunnel_key.h>
45 #include <net/tc_act/tc_pedit.h>
46 #include <net/tc_act/tc_csum.h>
47 #include <net/vxlan.h>
55 struct mlx5_nic_flow_attr {
62 MLX5E_TC_FLOW_ESWITCH = BIT(0),
63 MLX5E_TC_FLOW_NIC = BIT(1),
64 MLX5E_TC_FLOW_OFFLOADED = BIT(2),
67 struct mlx5e_tc_flow {
68 struct rhash_head node;
71 struct mlx5_flow_handle *rule;
72 struct list_head encap; /* flows sharing the same encap */
74 struct mlx5_esw_flow_attr esw_attr[0];
75 struct mlx5_nic_flow_attr nic_attr[0];
79 struct mlx5e_tc_flow_parse_attr {
80 struct mlx5_flow_spec spec;
81 int num_mod_hdr_actions;
82 void *mod_hdr_actions;
86 MLX5_HEADER_TYPE_VXLAN = 0x0,
87 MLX5_HEADER_TYPE_NVGRE = 0x1,
90 #define MLX5E_TC_TABLE_NUM_ENTRIES 1024
91 #define MLX5E_TC_TABLE_NUM_GROUPS 4
93 static struct mlx5_flow_handle *
94 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
95 struct mlx5e_tc_flow_parse_attr *parse_attr,
96 struct mlx5e_tc_flow *flow)
98 struct mlx5_nic_flow_attr *attr = flow->nic_attr;
99 struct mlx5_core_dev *dev = priv->mdev;
100 struct mlx5_flow_destination dest = {};
101 struct mlx5_flow_act flow_act = {
102 .action = attr->action,
103 .flow_tag = attr->flow_tag,
106 struct mlx5_fc *counter = NULL;
107 struct mlx5_flow_handle *rule;
108 bool table_created = false;
111 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
112 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
113 dest.ft = priv->fs.vlan.ft.t;
114 } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
115 counter = mlx5_fc_create(dev, true);
117 return ERR_CAST(counter);
119 dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
120 dest.counter = counter;
123 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
124 err = mlx5_modify_header_alloc(dev, MLX5_FLOW_NAMESPACE_KERNEL,
125 parse_attr->num_mod_hdr_actions,
126 parse_attr->mod_hdr_actions,
128 flow_act.modify_id = attr->mod_hdr_id;
129 kfree(parse_attr->mod_hdr_actions);
132 goto err_create_mod_hdr_id;
136 if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
138 mlx5_create_auto_grouped_flow_table(priv->fs.ns,
140 MLX5E_TC_TABLE_NUM_ENTRIES,
141 MLX5E_TC_TABLE_NUM_GROUPS,
143 if (IS_ERR(priv->fs.tc.t)) {
144 netdev_err(priv->netdev,
145 "Failed to create tc offload table\n");
146 rule = ERR_CAST(priv->fs.tc.t);
150 table_created = true;
153 parse_attr->spec.match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
154 rule = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec,
155 &flow_act, &dest, 1);
164 mlx5_destroy_flow_table(priv->fs.tc.t);
165 priv->fs.tc.t = NULL;
168 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
169 mlx5_modify_header_dealloc(priv->mdev,
171 err_create_mod_hdr_id:
172 mlx5_fc_destroy(dev, counter);
177 static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
178 struct mlx5e_tc_flow *flow)
180 struct mlx5_fc *counter = NULL;
182 counter = mlx5_flow_rule_counter(flow->rule);
183 mlx5_del_flow_rules(flow->rule);
184 mlx5_fc_destroy(priv->mdev, counter);
186 if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
187 mlx5_destroy_flow_table(priv->fs.tc.t);
188 priv->fs.tc.t = NULL;
191 if (flow->nic_attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
192 mlx5_modify_header_dealloc(priv->mdev,
193 flow->nic_attr->mod_hdr_id);
196 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
197 struct mlx5e_tc_flow *flow);
199 static struct mlx5_flow_handle *
200 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
201 struct mlx5e_tc_flow_parse_attr *parse_attr,
202 struct mlx5e_tc_flow *flow)
204 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
205 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
206 struct mlx5_flow_handle *rule;
209 err = mlx5_eswitch_add_vlan_action(esw, attr);
215 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
216 err = mlx5_modify_header_alloc(priv->mdev, MLX5_FLOW_NAMESPACE_FDB,
217 parse_attr->num_mod_hdr_actions,
218 parse_attr->mod_hdr_actions,
220 kfree(parse_attr->mod_hdr_actions);
227 rule = mlx5_eswitch_add_offloaded_rule(esw, &parse_attr->spec, attr);
234 if (flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
235 mlx5_modify_header_dealloc(priv->mdev,
238 mlx5_eswitch_del_vlan_action(esw, attr);
240 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
241 mlx5e_detach_encap(priv, flow);
245 static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
246 struct mlx5e_tc_flow *flow)
248 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
249 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
251 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
252 flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
253 mlx5_eswitch_del_offloaded_rule(esw, flow->rule, flow->esw_attr);
256 mlx5_eswitch_del_vlan_action(esw, flow->esw_attr);
258 if (flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP) {
259 mlx5e_detach_encap(priv, flow);
260 kvfree(flow->esw_attr->parse_attr);
263 if (flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
264 mlx5_modify_header_dealloc(priv->mdev,
268 void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
269 struct mlx5e_encap_entry *e)
271 struct mlx5e_tc_flow *flow;
274 err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
275 e->encap_size, e->encap_header,
278 mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %d\n",
282 e->flags |= MLX5_ENCAP_ENTRY_VALID;
283 mlx5e_rep_queue_neigh_stats_work(priv);
285 list_for_each_entry(flow, &e->flows, encap) {
286 flow->esw_attr->encap_id = e->encap_id;
287 flow->rule = mlx5e_tc_add_fdb_flow(priv,
288 flow->esw_attr->parse_attr,
290 if (IS_ERR(flow->rule)) {
291 err = PTR_ERR(flow->rule);
292 mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n",
296 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
300 void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
301 struct mlx5e_encap_entry *e)
303 struct mlx5e_tc_flow *flow;
304 struct mlx5_fc *counter;
306 list_for_each_entry(flow, &e->flows, encap) {
307 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
308 flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
309 counter = mlx5_flow_rule_counter(flow->rule);
310 mlx5_del_flow_rules(flow->rule);
311 mlx5_fc_destroy(priv->mdev, counter);
315 if (e->flags & MLX5_ENCAP_ENTRY_VALID) {
316 e->flags &= ~MLX5_ENCAP_ENTRY_VALID;
317 mlx5_encap_dealloc(priv->mdev, e->encap_id);
321 void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
323 struct mlx5e_neigh *m_neigh = &nhe->m_neigh;
324 u64 bytes, packets, lastuse = 0;
325 struct mlx5e_tc_flow *flow;
326 struct mlx5e_encap_entry *e;
327 struct mlx5_fc *counter;
328 struct neigh_table *tbl;
329 bool neigh_used = false;
332 if (m_neigh->family == AF_INET)
334 #if IS_ENABLED(CONFIG_IPV6)
335 else if (m_neigh->family == AF_INET6)
336 tbl = ipv6_stub->nd_tbl;
341 list_for_each_entry(e, &nhe->encap_list, encap_list) {
342 if (!(e->flags & MLX5_ENCAP_ENTRY_VALID))
344 list_for_each_entry(flow, &e->flows, encap) {
345 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
346 counter = mlx5_flow_rule_counter(flow->rule);
347 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
348 if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) {
357 nhe->reported_lastuse = jiffies;
359 /* find the relevant neigh according to the cached device and
362 n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev);
364 WARN(1, "The neighbour already freed\n");
368 neigh_event_send(n, NULL);
373 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
374 struct mlx5e_tc_flow *flow)
376 struct list_head *next = flow->encap.next;
378 list_del(&flow->encap);
379 if (list_empty(next)) {
380 struct mlx5e_encap_entry *e;
382 e = list_entry(next, struct mlx5e_encap_entry, flows);
383 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
385 if (e->flags & MLX5_ENCAP_ENTRY_VALID)
386 mlx5_encap_dealloc(priv->mdev, e->encap_id);
388 hash_del_rcu(&e->encap_hlist);
389 kfree(e->encap_header);
394 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
395 struct mlx5e_tc_flow *flow)
397 if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
398 mlx5e_tc_del_fdb_flow(priv, flow);
400 mlx5e_tc_del_nic_flow(priv, flow);
403 static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
404 struct tc_cls_flower_offload *f)
406 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
408 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
410 void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
412 void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
415 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
416 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
418 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
419 struct flow_dissector_key_keyid *key =
420 skb_flow_dissector_target(f->dissector,
421 FLOW_DISSECTOR_KEY_ENC_KEYID,
423 struct flow_dissector_key_keyid *mask =
424 skb_flow_dissector_target(f->dissector,
425 FLOW_DISSECTOR_KEY_ENC_KEYID,
427 MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
428 be32_to_cpu(mask->keyid));
429 MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
430 be32_to_cpu(key->keyid));
434 static int parse_tunnel_attr(struct mlx5e_priv *priv,
435 struct mlx5_flow_spec *spec,
436 struct tc_cls_flower_offload *f)
438 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
440 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
443 struct flow_dissector_key_control *enc_control =
444 skb_flow_dissector_target(f->dissector,
445 FLOW_DISSECTOR_KEY_ENC_CONTROL,
448 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
449 struct flow_dissector_key_ports *key =
450 skb_flow_dissector_target(f->dissector,
451 FLOW_DISSECTOR_KEY_ENC_PORTS,
453 struct flow_dissector_key_ports *mask =
454 skb_flow_dissector_target(f->dissector,
455 FLOW_DISSECTOR_KEY_ENC_PORTS,
457 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
458 struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw);
459 struct mlx5e_priv *up_priv = netdev_priv(up_dev);
461 /* Full udp dst port must be given */
462 if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
463 goto vxlan_match_offload_err;
465 if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->dst)) &&
466 MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
467 parse_vxlan_attr(spec, f);
469 netdev_warn(priv->netdev,
470 "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
474 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
475 udp_dport, ntohs(mask->dst));
476 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
477 udp_dport, ntohs(key->dst));
479 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
480 udp_sport, ntohs(mask->src));
481 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
482 udp_sport, ntohs(key->src));
483 } else { /* udp dst port must be given */
484 vxlan_match_offload_err:
485 netdev_warn(priv->netdev,
486 "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
490 if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
491 struct flow_dissector_key_ipv4_addrs *key =
492 skb_flow_dissector_target(f->dissector,
493 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
495 struct flow_dissector_key_ipv4_addrs *mask =
496 skb_flow_dissector_target(f->dissector,
497 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
499 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
500 src_ipv4_src_ipv6.ipv4_layout.ipv4,
502 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
503 src_ipv4_src_ipv6.ipv4_layout.ipv4,
506 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
507 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
509 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
510 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
513 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
514 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
515 } else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
516 struct flow_dissector_key_ipv6_addrs *key =
517 skb_flow_dissector_target(f->dissector,
518 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
520 struct flow_dissector_key_ipv6_addrs *mask =
521 skb_flow_dissector_target(f->dissector,
522 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
525 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
526 src_ipv4_src_ipv6.ipv6_layout.ipv6),
527 &mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
528 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
529 src_ipv4_src_ipv6.ipv6_layout.ipv6),
530 &key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
532 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
533 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
534 &mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
535 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
536 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
537 &key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
539 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
540 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6);
543 /* Enforce DMAC when offloading incoming tunneled flows.
544 * Flow counters require a match on the DMAC.
546 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
547 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
548 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
549 dmac_47_16), priv->netdev->dev_addr);
551 /* let software handle IP fragments */
552 MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
553 MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
558 static int __parse_cls_flower(struct mlx5e_priv *priv,
559 struct mlx5_flow_spec *spec,
560 struct tc_cls_flower_offload *f,
563 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
565 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
570 *min_inline = MLX5_INLINE_MODE_L2;
572 if (f->dissector->used_keys &
573 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
574 BIT(FLOW_DISSECTOR_KEY_BASIC) |
575 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
576 BIT(FLOW_DISSECTOR_KEY_VLAN) |
577 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
578 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
579 BIT(FLOW_DISSECTOR_KEY_PORTS) |
580 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
581 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
582 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
583 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
584 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL))) {
585 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
586 f->dissector->used_keys);
590 if ((dissector_uses_key(f->dissector,
591 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
592 dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
593 dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
594 dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
595 struct flow_dissector_key_control *key =
596 skb_flow_dissector_target(f->dissector,
597 FLOW_DISSECTOR_KEY_ENC_CONTROL,
599 switch (key->addr_type) {
600 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
601 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
602 if (parse_tunnel_attr(priv, spec, f))
609 /* In decap flow, header pointers should point to the inner
610 * headers, outer header were already set by parse_tunnel_attr
612 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
614 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
618 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
619 struct flow_dissector_key_control *key =
620 skb_flow_dissector_target(f->dissector,
621 FLOW_DISSECTOR_KEY_CONTROL,
624 struct flow_dissector_key_control *mask =
625 skb_flow_dissector_target(f->dissector,
626 FLOW_DISSECTOR_KEY_CONTROL,
628 addr_type = key->addr_type;
630 if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
631 MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
632 MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
633 key->flags & FLOW_DIS_IS_FRAGMENT);
635 /* the HW doesn't need L3 inline to match on frag=no */
636 if (key->flags & FLOW_DIS_IS_FRAGMENT)
637 *min_inline = MLX5_INLINE_MODE_IP;
641 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
642 struct flow_dissector_key_basic *key =
643 skb_flow_dissector_target(f->dissector,
644 FLOW_DISSECTOR_KEY_BASIC,
646 struct flow_dissector_key_basic *mask =
647 skb_flow_dissector_target(f->dissector,
648 FLOW_DISSECTOR_KEY_BASIC,
650 ip_proto = key->ip_proto;
652 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
653 ntohs(mask->n_proto));
654 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
655 ntohs(key->n_proto));
657 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
659 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
663 *min_inline = MLX5_INLINE_MODE_IP;
666 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
667 struct flow_dissector_key_eth_addrs *key =
668 skb_flow_dissector_target(f->dissector,
669 FLOW_DISSECTOR_KEY_ETH_ADDRS,
671 struct flow_dissector_key_eth_addrs *mask =
672 skb_flow_dissector_target(f->dissector,
673 FLOW_DISSECTOR_KEY_ETH_ADDRS,
676 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
679 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
683 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
686 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
691 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
692 struct flow_dissector_key_vlan *key =
693 skb_flow_dissector_target(f->dissector,
694 FLOW_DISSECTOR_KEY_VLAN,
696 struct flow_dissector_key_vlan *mask =
697 skb_flow_dissector_target(f->dissector,
698 FLOW_DISSECTOR_KEY_VLAN,
700 if (mask->vlan_id || mask->vlan_priority) {
701 MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
702 MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1);
704 MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
705 MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
707 MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
708 MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
712 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
713 struct flow_dissector_key_ipv4_addrs *key =
714 skb_flow_dissector_target(f->dissector,
715 FLOW_DISSECTOR_KEY_IPV4_ADDRS,
717 struct flow_dissector_key_ipv4_addrs *mask =
718 skb_flow_dissector_target(f->dissector,
719 FLOW_DISSECTOR_KEY_IPV4_ADDRS,
722 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
723 src_ipv4_src_ipv6.ipv4_layout.ipv4),
724 &mask->src, sizeof(mask->src));
725 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
726 src_ipv4_src_ipv6.ipv4_layout.ipv4),
727 &key->src, sizeof(key->src));
728 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
729 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
730 &mask->dst, sizeof(mask->dst));
731 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
732 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
733 &key->dst, sizeof(key->dst));
735 if (mask->src || mask->dst)
736 *min_inline = MLX5_INLINE_MODE_IP;
739 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
740 struct flow_dissector_key_ipv6_addrs *key =
741 skb_flow_dissector_target(f->dissector,
742 FLOW_DISSECTOR_KEY_IPV6_ADDRS,
744 struct flow_dissector_key_ipv6_addrs *mask =
745 skb_flow_dissector_target(f->dissector,
746 FLOW_DISSECTOR_KEY_IPV6_ADDRS,
749 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
750 src_ipv4_src_ipv6.ipv6_layout.ipv6),
751 &mask->src, sizeof(mask->src));
752 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
753 src_ipv4_src_ipv6.ipv6_layout.ipv6),
754 &key->src, sizeof(key->src));
756 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
757 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
758 &mask->dst, sizeof(mask->dst));
759 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
760 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
761 &key->dst, sizeof(key->dst));
763 if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
764 ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
765 *min_inline = MLX5_INLINE_MODE_IP;
768 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
769 struct flow_dissector_key_ports *key =
770 skb_flow_dissector_target(f->dissector,
771 FLOW_DISSECTOR_KEY_PORTS,
773 struct flow_dissector_key_ports *mask =
774 skb_flow_dissector_target(f->dissector,
775 FLOW_DISSECTOR_KEY_PORTS,
779 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
780 tcp_sport, ntohs(mask->src));
781 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
782 tcp_sport, ntohs(key->src));
784 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
785 tcp_dport, ntohs(mask->dst));
786 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
787 tcp_dport, ntohs(key->dst));
791 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
792 udp_sport, ntohs(mask->src));
793 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
794 udp_sport, ntohs(key->src));
796 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
797 udp_dport, ntohs(mask->dst));
798 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
799 udp_dport, ntohs(key->dst));
802 netdev_err(priv->netdev,
803 "Only UDP and TCP transport are supported\n");
807 if (mask->src || mask->dst)
808 *min_inline = MLX5_INLINE_MODE_TCP_UDP;
814 static int parse_cls_flower(struct mlx5e_priv *priv,
815 struct mlx5e_tc_flow *flow,
816 struct mlx5_flow_spec *spec,
817 struct tc_cls_flower_offload *f)
819 struct mlx5_core_dev *dev = priv->mdev;
820 struct mlx5_eswitch *esw = dev->priv.eswitch;
821 struct mlx5e_rep_priv *rpriv = priv->ppriv;
822 struct mlx5_eswitch_rep *rep;
826 err = __parse_cls_flower(priv, spec, f, &min_inline);
828 if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH)) {
830 if (rep->vport != FDB_UPLINK_VPORT &&
831 (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
832 esw->offloads.inline_mode < min_inline)) {
833 netdev_warn(priv->netdev,
834 "Flow is not offloaded due to min inline setting, required %d actual %d\n",
835 min_inline, esw->offloads.inline_mode);
843 struct pedit_headers {
851 static int pedit_header_offsets[] = {
852 [TCA_PEDIT_KEY_EX_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth),
853 [TCA_PEDIT_KEY_EX_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4),
854 [TCA_PEDIT_KEY_EX_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6),
855 [TCA_PEDIT_KEY_EX_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp),
856 [TCA_PEDIT_KEY_EX_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp),
859 #define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype])
861 static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset,
862 struct pedit_headers *masks,
863 struct pedit_headers *vals)
865 u32 *curr_pmask, *curr_pval;
867 if (hdr_type >= __PEDIT_HDR_TYPE_MAX)
870 curr_pmask = (u32 *)(pedit_header(masks, hdr_type) + offset);
871 curr_pval = (u32 *)(pedit_header(vals, hdr_type) + offset);
873 if (*curr_pmask & mask) /* disallow acting twice on the same location */
877 *curr_pval |= (val & mask);
891 static struct mlx5_fields fields[] = {
892 {MLX5_ACTION_IN_FIELD_OUT_DMAC_47_16, 4, offsetof(struct pedit_headers, eth.h_dest[0])},
893 {MLX5_ACTION_IN_FIELD_OUT_DMAC_15_0, 2, offsetof(struct pedit_headers, eth.h_dest[4])},
894 {MLX5_ACTION_IN_FIELD_OUT_SMAC_47_16, 4, offsetof(struct pedit_headers, eth.h_source[0])},
895 {MLX5_ACTION_IN_FIELD_OUT_SMAC_15_0, 2, offsetof(struct pedit_headers, eth.h_source[4])},
896 {MLX5_ACTION_IN_FIELD_OUT_ETHERTYPE, 2, offsetof(struct pedit_headers, eth.h_proto)},
898 {MLX5_ACTION_IN_FIELD_OUT_IP_TTL, 1, offsetof(struct pedit_headers, ip4.ttl)},
899 {MLX5_ACTION_IN_FIELD_OUT_SIPV4, 4, offsetof(struct pedit_headers, ip4.saddr)},
900 {MLX5_ACTION_IN_FIELD_OUT_DIPV4, 4, offsetof(struct pedit_headers, ip4.daddr)},
902 {MLX5_ACTION_IN_FIELD_OUT_SIPV6_127_96, 4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[0])},
903 {MLX5_ACTION_IN_FIELD_OUT_SIPV6_95_64, 4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[1])},
904 {MLX5_ACTION_IN_FIELD_OUT_SIPV6_63_32, 4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[2])},
905 {MLX5_ACTION_IN_FIELD_OUT_SIPV6_31_0, 4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[3])},
906 {MLX5_ACTION_IN_FIELD_OUT_DIPV6_127_96, 4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[0])},
907 {MLX5_ACTION_IN_FIELD_OUT_DIPV6_95_64, 4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[1])},
908 {MLX5_ACTION_IN_FIELD_OUT_DIPV6_63_32, 4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[2])},
909 {MLX5_ACTION_IN_FIELD_OUT_DIPV6_31_0, 4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[3])},
911 {MLX5_ACTION_IN_FIELD_OUT_TCP_SPORT, 2, offsetof(struct pedit_headers, tcp.source)},
912 {MLX5_ACTION_IN_FIELD_OUT_TCP_DPORT, 2, offsetof(struct pedit_headers, tcp.dest)},
913 {MLX5_ACTION_IN_FIELD_OUT_TCP_FLAGS, 1, offsetof(struct pedit_headers, tcp.ack_seq) + 5},
915 {MLX5_ACTION_IN_FIELD_OUT_UDP_SPORT, 2, offsetof(struct pedit_headers, udp.source)},
916 {MLX5_ACTION_IN_FIELD_OUT_UDP_DPORT, 2, offsetof(struct pedit_headers, udp.dest)},
919 /* On input attr->num_mod_hdr_actions tells how many HW actions can be parsed at
920 * max from the SW pedit action. On success, it says how many HW actions were
923 static int offload_pedit_fields(struct pedit_headers *masks,
924 struct pedit_headers *vals,
925 struct mlx5e_tc_flow_parse_attr *parse_attr)
927 struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
928 int i, action_size, nactions, max_actions, first, last, first_z;
929 void *s_masks_p, *a_masks_p, *vals_p;
930 struct mlx5_fields *f;
936 set_masks = &masks[TCA_PEDIT_KEY_EX_CMD_SET];
937 add_masks = &masks[TCA_PEDIT_KEY_EX_CMD_ADD];
938 set_vals = &vals[TCA_PEDIT_KEY_EX_CMD_SET];
939 add_vals = &vals[TCA_PEDIT_KEY_EX_CMD_ADD];
941 action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
942 action = parse_attr->mod_hdr_actions;
943 max_actions = parse_attr->num_mod_hdr_actions;
946 for (i = 0; i < ARRAY_SIZE(fields); i++) {
948 /* avoid seeing bits set from previous iterations */
952 s_masks_p = (void *)set_masks + f->offset;
953 a_masks_p = (void *)add_masks + f->offset;
955 memcpy(&s_mask, s_masks_p, f->size);
956 memcpy(&a_mask, a_masks_p, f->size);
958 if (!s_mask && !a_mask) /* nothing to offload here */
961 if (s_mask && a_mask) {
962 printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field);
966 if (nactions == max_actions) {
967 printk(KERN_WARNING "mlx5: parsed %d pedit actions, can't do more\n", nactions);
972 cmd = MLX5_ACTION_TYPE_SET;
974 vals_p = (void *)set_vals + f->offset;
975 /* clear to denote we consumed this field */
976 memset(s_masks_p, 0, f->size);
978 cmd = MLX5_ACTION_TYPE_ADD;
980 vals_p = (void *)add_vals + f->offset;
981 /* clear to denote we consumed this field */
982 memset(a_masks_p, 0, f->size);
985 field_bsize = f->size * BITS_PER_BYTE;
987 first_z = find_first_zero_bit(&mask, field_bsize);
988 first = find_first_bit(&mask, field_bsize);
989 last = find_last_bit(&mask, field_bsize);
990 if (first > 0 || last != (field_bsize - 1) || first_z < last) {
991 printk(KERN_WARNING "mlx5: partial rewrite (mask %lx) is currently not offloaded\n",
996 MLX5_SET(set_action_in, action, action_type, cmd);
997 MLX5_SET(set_action_in, action, field, f->field);
999 if (cmd == MLX5_ACTION_TYPE_SET) {
1000 MLX5_SET(set_action_in, action, offset, 0);
1001 /* length is num of bits to be written, zero means length of 32 */
1002 MLX5_SET(set_action_in, action, length, field_bsize);
1005 if (field_bsize == 32)
1006 MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p));
1007 else if (field_bsize == 16)
1008 MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p));
1009 else if (field_bsize == 8)
1010 MLX5_SET(set_action_in, action, data, *(u8 *)vals_p);
1012 action += action_size;
1016 parse_attr->num_mod_hdr_actions = nactions;
1020 static int alloc_mod_hdr_actions(struct mlx5e_priv *priv,
1021 const struct tc_action *a, int namespace,
1022 struct mlx5e_tc_flow_parse_attr *parse_attr)
1024 int nkeys, action_size, max_actions;
1026 nkeys = tcf_pedit_nkeys(a);
1027 action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
1029 if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
1030 max_actions = MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, max_modify_header_actions);
1031 else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
1032 max_actions = MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, max_modify_header_actions);
1034 /* can get up to crazingly 16 HW actions in 32 bits pedit SW key */
1035 max_actions = min(max_actions, nkeys * 16);
1037 parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL);
1038 if (!parse_attr->mod_hdr_actions)
1041 parse_attr->num_mod_hdr_actions = max_actions;
1045 static const struct pedit_headers zero_masks = {};
1047 static int parse_tc_pedit_action(struct mlx5e_priv *priv,
1048 const struct tc_action *a, int namespace,
1049 struct mlx5e_tc_flow_parse_attr *parse_attr)
1051 struct pedit_headers masks[__PEDIT_CMD_MAX], vals[__PEDIT_CMD_MAX], *cmd_masks;
1052 int nkeys, i, err = -EOPNOTSUPP;
1053 u32 mask, val, offset;
1056 nkeys = tcf_pedit_nkeys(a);
1058 memset(masks, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1059 memset(vals, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1061 for (i = 0; i < nkeys; i++) {
1062 htype = tcf_pedit_htype(a, i);
1063 cmd = tcf_pedit_cmd(a, i);
1064 err = -EOPNOTSUPP; /* can't be all optimistic */
1066 if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK) {
1067 printk(KERN_WARNING "mlx5: legacy pedit isn't offloaded\n");
1071 if (cmd != TCA_PEDIT_KEY_EX_CMD_SET && cmd != TCA_PEDIT_KEY_EX_CMD_ADD) {
1072 printk(KERN_WARNING "mlx5: pedit cmd %d isn't offloaded\n", cmd);
1076 mask = tcf_pedit_mask(a, i);
1077 val = tcf_pedit_val(a, i);
1078 offset = tcf_pedit_offset(a, i);
1080 err = set_pedit_val(htype, ~mask, val, offset, &masks[cmd], &vals[cmd]);
1085 err = alloc_mod_hdr_actions(priv, a, namespace, parse_attr);
1089 err = offload_pedit_fields(masks, vals, parse_attr);
1091 goto out_dealloc_parsed_actions;
1093 for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
1094 cmd_masks = &masks[cmd];
1095 if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
1096 printk(KERN_WARNING "mlx5: attempt to offload an unsupported field (cmd %d)\n",
1098 print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
1099 16, 1, cmd_masks, sizeof(zero_masks), true);
1101 goto out_dealloc_parsed_actions;
1107 out_dealloc_parsed_actions:
1108 kfree(parse_attr->mod_hdr_actions);
1113 static bool csum_offload_supported(struct mlx5e_priv *priv, u32 action, u32 update_flags)
1115 u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP |
1116 TCA_CSUM_UPDATE_FLAG_UDP;
1118 /* The HW recalcs checksums only if re-writing headers */
1119 if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) {
1120 netdev_warn(priv->netdev,
1121 "TC csum action is only offloaded with pedit\n");
1125 if (update_flags & ~prot_flags) {
1126 netdev_warn(priv->netdev,
1127 "can't offload TC csum action for some header/s - flags %#x\n",
1135 static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1136 struct mlx5e_tc_flow_parse_attr *parse_attr,
1137 struct mlx5e_tc_flow *flow)
1139 struct mlx5_nic_flow_attr *attr = flow->nic_attr;
1140 const struct tc_action *a;
1144 if (tc_no_actions(exts))
1147 attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
1150 tcf_exts_to_list(exts, &actions);
1151 list_for_each_entry(a, &actions, list) {
1152 /* Only support a single action per rule */
1156 if (is_tcf_gact_shot(a)) {
1157 attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
1158 if (MLX5_CAP_FLOWTABLE(priv->mdev,
1159 flow_table_properties_nic_receive.flow_counter))
1160 attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
1164 if (is_tcf_pedit(a)) {
1165 err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_KERNEL,
1170 attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR |
1171 MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1175 if (is_tcf_csum(a)) {
1176 if (csum_offload_supported(priv, attr->action,
1177 tcf_csum_update_flags(a)))
1183 if (is_tcf_skbedit_mark(a)) {
1184 u32 mark = tcf_skbedit_mark(a);
1186 if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
1187 netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
1192 attr->flow_tag = mark;
1193 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1203 static inline int cmp_encap_info(struct ip_tunnel_key *a,
1204 struct ip_tunnel_key *b)
1206 return memcmp(a, b, sizeof(*a));
1209 static inline int hash_encap_info(struct ip_tunnel_key *key)
1211 return jhash(key, sizeof(*key), 0);
1214 static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
1215 struct net_device *mirred_dev,
1216 struct net_device **out_dev,
1218 struct neighbour **out_n,
1221 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1223 struct neighbour *n = NULL;
1225 #if IS_ENABLED(CONFIG_INET)
1228 rt = ip_route_output_key(dev_net(mirred_dev), fl4);
1229 ret = PTR_ERR_OR_ZERO(rt);
1235 /* if the egress device isn't on the same HW e-switch, we use the uplink */
1236 if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
1237 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
1239 *out_dev = rt->dst.dev;
1241 *out_ttl = ip4_dst_hoplimit(&rt->dst);
1242 n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
1251 static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
1252 struct net_device *mirred_dev,
1253 struct net_device **out_dev,
1255 struct neighbour **out_n,
1258 struct neighbour *n = NULL;
1259 struct dst_entry *dst;
1261 #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
1262 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1265 dst = ip6_route_output(dev_net(mirred_dev), NULL, fl6);
1272 *out_ttl = ip6_dst_hoplimit(dst);
1274 /* if the egress device isn't on the same HW e-switch, we use the uplink */
1275 if (!switchdev_port_same_parent_id(priv->netdev, dst->dev))
1276 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
1278 *out_dev = dst->dev;
1283 n = dst_neigh_lookup(dst, &fl6->daddr);
1292 static void gen_vxlan_header_ipv4(struct net_device *out_dev,
1293 char buf[], int encap_size,
1294 unsigned char h_dest[ETH_ALEN],
1298 __be16 udp_dst_port,
1301 struct ethhdr *eth = (struct ethhdr *)buf;
1302 struct iphdr *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
1303 struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
1304 struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
1306 memset(buf, 0, encap_size);
1308 ether_addr_copy(eth->h_dest, h_dest);
1309 ether_addr_copy(eth->h_source, out_dev->dev_addr);
1310 eth->h_proto = htons(ETH_P_IP);
1316 ip->protocol = IPPROTO_UDP;
1320 udp->dest = udp_dst_port;
1321 vxh->vx_flags = VXLAN_HF_VNI;
1322 vxh->vx_vni = vxlan_vni_field(vx_vni);
1325 static void gen_vxlan_header_ipv6(struct net_device *out_dev,
1326 char buf[], int encap_size,
1327 unsigned char h_dest[ETH_ALEN],
1329 struct in6_addr *daddr,
1330 struct in6_addr *saddr,
1331 __be16 udp_dst_port,
1334 struct ethhdr *eth = (struct ethhdr *)buf;
1335 struct ipv6hdr *ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr));
1336 struct udphdr *udp = (struct udphdr *)((char *)ip6h + sizeof(struct ipv6hdr));
1337 struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
1339 memset(buf, 0, encap_size);
1341 ether_addr_copy(eth->h_dest, h_dest);
1342 ether_addr_copy(eth->h_source, out_dev->dev_addr);
1343 eth->h_proto = htons(ETH_P_IPV6);
1345 ip6_flow_hdr(ip6h, 0, 0);
1346 /* the HW fills up ipv6 payload len */
1347 ip6h->nexthdr = IPPROTO_UDP;
1348 ip6h->hop_limit = ttl;
1349 ip6h->daddr = *daddr;
1350 ip6h->saddr = *saddr;
1352 udp->dest = udp_dst_port;
1353 vxh->vx_flags = VXLAN_HF_VNI;
1354 vxh->vx_vni = vxlan_vni_field(vx_vni);
1357 static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
1358 struct net_device *mirred_dev,
1359 struct mlx5e_encap_entry *e)
1361 int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
1362 int ipv4_encap_size = ETH_HLEN + sizeof(struct iphdr) + VXLAN_HLEN;
1363 struct ip_tunnel_key *tun_key = &e->tun_info.key;
1364 struct net_device *out_dev;
1365 struct neighbour *n = NULL;
1366 struct flowi4 fl4 = {};
1371 if (max_encap_size < ipv4_encap_size) {
1372 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
1373 ipv4_encap_size, max_encap_size);
1377 encap_header = kzalloc(ipv4_encap_size, GFP_KERNEL);
1381 switch (e->tunnel_type) {
1382 case MLX5_HEADER_TYPE_VXLAN:
1383 fl4.flowi4_proto = IPPROTO_UDP;
1384 fl4.fl4_dport = tun_key->tp_dst;
1390 fl4.flowi4_tos = tun_key->tos;
1391 fl4.daddr = tun_key->u.ipv4.dst;
1392 fl4.saddr = tun_key->u.ipv4.src;
1394 err = mlx5e_route_lookup_ipv4(priv, mirred_dev, &out_dev,
1399 /* used by mlx5e_detach_encap to lookup a neigh hash table
1400 * entry in the neigh hash table when a user deletes a rule
1402 e->m_neigh.dev = n->dev;
1403 e->m_neigh.family = n->ops->family;
1404 memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
1405 e->out_dev = out_dev;
1407 /* It's importent to add the neigh to the hash table before checking
1408 * the neigh validity state. So if we'll get a notification, in case the
1409 * neigh changes it's validity state, we would find the relevant neigh
1412 err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
1416 read_lock_bh(&n->lock);
1417 nud_state = n->nud_state;
1418 ether_addr_copy(e->h_dest, n->ha);
1419 read_unlock_bh(&n->lock);
1421 switch (e->tunnel_type) {
1422 case MLX5_HEADER_TYPE_VXLAN:
1423 gen_vxlan_header_ipv4(out_dev, encap_header,
1424 ipv4_encap_size, e->h_dest, ttl,
1426 fl4.saddr, tun_key->tp_dst,
1427 tunnel_id_to_key32(tun_key->tun_id));
1431 goto destroy_neigh_entry;
1433 e->encap_size = ipv4_encap_size;
1434 e->encap_header = encap_header;
1436 if (!(nud_state & NUD_VALID)) {
1437 neigh_event_send(n, NULL);
1442 err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
1443 ipv4_encap_size, encap_header, &e->encap_id);
1445 goto destroy_neigh_entry;
1447 e->flags |= MLX5_ENCAP_ENTRY_VALID;
1448 mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
1452 destroy_neigh_entry:
1453 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1455 kfree(encap_header);
1461 static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
1462 struct net_device *mirred_dev,
1463 struct mlx5e_encap_entry *e)
1465 int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
1466 int ipv6_encap_size = ETH_HLEN + sizeof(struct ipv6hdr) + VXLAN_HLEN;
1467 struct ip_tunnel_key *tun_key = &e->tun_info.key;
1468 struct net_device *out_dev;
1469 struct neighbour *n = NULL;
1470 struct flowi6 fl6 = {};
1475 if (max_encap_size < ipv6_encap_size) {
1476 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
1477 ipv6_encap_size, max_encap_size);
1481 encap_header = kzalloc(ipv6_encap_size, GFP_KERNEL);
1485 switch (e->tunnel_type) {
1486 case MLX5_HEADER_TYPE_VXLAN:
1487 fl6.flowi6_proto = IPPROTO_UDP;
1488 fl6.fl6_dport = tun_key->tp_dst;
1495 fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label);
1496 fl6.daddr = tun_key->u.ipv6.dst;
1497 fl6.saddr = tun_key->u.ipv6.src;
1499 err = mlx5e_route_lookup_ipv6(priv, mirred_dev, &out_dev,
1504 /* used by mlx5e_detach_encap to lookup a neigh hash table
1505 * entry in the neigh hash table when a user deletes a rule
1507 e->m_neigh.dev = n->dev;
1508 e->m_neigh.family = n->ops->family;
1509 memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
1510 e->out_dev = out_dev;
1512 /* It's importent to add the neigh to the hash table before checking
1513 * the neigh validity state. So if we'll get a notification, in case the
1514 * neigh changes it's validity state, we would find the relevant neigh
1517 err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
1521 read_lock_bh(&n->lock);
1522 nud_state = n->nud_state;
1523 ether_addr_copy(e->h_dest, n->ha);
1524 read_unlock_bh(&n->lock);
1526 switch (e->tunnel_type) {
1527 case MLX5_HEADER_TYPE_VXLAN:
1528 gen_vxlan_header_ipv6(out_dev, encap_header,
1529 ipv6_encap_size, e->h_dest, ttl,
1531 &fl6.saddr, tun_key->tp_dst,
1532 tunnel_id_to_key32(tun_key->tun_id));
1536 goto destroy_neigh_entry;
1539 e->encap_size = ipv6_encap_size;
1540 e->encap_header = encap_header;
1542 if (!(nud_state & NUD_VALID)) {
1543 neigh_event_send(n, NULL);
1548 err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
1549 ipv6_encap_size, encap_header, &e->encap_id);
1551 goto destroy_neigh_entry;
1553 e->flags |= MLX5_ENCAP_ENTRY_VALID;
1554 mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
1558 destroy_neigh_entry:
1559 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1561 kfree(encap_header);
1567 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
1568 struct ip_tunnel_info *tun_info,
1569 struct net_device *mirred_dev,
1570 struct net_device **encap_dev,
1571 struct mlx5e_tc_flow *flow)
1573 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1574 struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw);
1575 unsigned short family = ip_tunnel_info_af(tun_info);
1576 struct mlx5e_priv *up_priv = netdev_priv(up_dev);
1577 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1578 struct ip_tunnel_key *key = &tun_info->key;
1579 struct mlx5e_encap_entry *e;
1580 int tunnel_type, err = 0;
1584 /* udp dst port must be set */
1585 if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
1586 goto vxlan_encap_offload_err;
1588 /* setting udp src port isn't supported */
1589 if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
1590 vxlan_encap_offload_err:
1591 netdev_warn(priv->netdev,
1592 "must set udp dst port and not set udp src port\n");
1596 if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->tp_dst)) &&
1597 MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
1598 tunnel_type = MLX5_HEADER_TYPE_VXLAN;
1600 netdev_warn(priv->netdev,
1601 "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
1605 hash_key = hash_encap_info(key);
1607 hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
1608 encap_hlist, hash_key) {
1609 if (!cmp_encap_info(&e->tun_info.key, key)) {
1618 e = kzalloc(sizeof(*e), GFP_KERNEL);
1622 e->tun_info = *tun_info;
1623 e->tunnel_type = tunnel_type;
1624 INIT_LIST_HEAD(&e->flows);
1626 if (family == AF_INET)
1627 err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e);
1628 else if (family == AF_INET6)
1629 err = mlx5e_create_encap_header_ipv6(priv, mirred_dev, e);
1631 if (err && err != -EAGAIN)
1634 hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
1637 list_add(&flow->encap, &e->flows);
1638 *encap_dev = e->out_dev;
1639 if (e->flags & MLX5_ENCAP_ENTRY_VALID)
1640 attr->encap_id = e->encap_id;
1649 static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1650 struct mlx5e_tc_flow_parse_attr *parse_attr,
1651 struct mlx5e_tc_flow *flow)
1653 struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1654 struct mlx5e_rep_priv *rpriv = priv->ppriv;
1655 struct ip_tunnel_info *info = NULL;
1656 const struct tc_action *a;
1661 if (tc_no_actions(exts))
1664 memset(attr, 0, sizeof(*attr));
1665 attr->in_rep = rpriv->rep;
1667 tcf_exts_to_list(exts, &actions);
1668 list_for_each_entry(a, &actions, list) {
1669 if (is_tcf_gact_shot(a)) {
1670 attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
1671 MLX5_FLOW_CONTEXT_ACTION_COUNT;
1675 if (is_tcf_pedit(a)) {
1676 err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_FDB,
1681 attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
1685 if (is_tcf_csum(a)) {
1686 if (csum_offload_supported(priv, attr->action,
1687 tcf_csum_update_flags(a)))
1693 if (is_tcf_mirred_egress_redirect(a)) {
1694 int ifindex = tcf_mirred_ifindex(a);
1695 struct net_device *out_dev, *encap_dev = NULL;
1696 struct mlx5e_priv *out_priv;
1698 out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
1700 if (switchdev_port_same_parent_id(priv->netdev,
1702 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1703 MLX5_FLOW_CONTEXT_ACTION_COUNT;
1704 out_priv = netdev_priv(out_dev);
1705 rpriv = out_priv->ppriv;
1706 attr->out_rep = rpriv->rep;
1708 err = mlx5e_attach_encap(priv, info,
1709 out_dev, &encap_dev, flow);
1710 if (err && err != -EAGAIN)
1712 attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
1713 MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1714 MLX5_FLOW_CONTEXT_ACTION_COUNT;
1715 out_priv = netdev_priv(encap_dev);
1716 rpriv = out_priv->ppriv;
1717 attr->out_rep = rpriv->rep;
1718 attr->parse_attr = parse_attr;
1720 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
1721 priv->netdev->name, out_dev->name);
1727 if (is_tcf_tunnel_set(a)) {
1728 info = tcf_tunnel_info(a);
1736 if (is_tcf_vlan(a)) {
1737 if (tcf_vlan_action(a) == TCA_VLAN_ACT_POP) {
1738 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
1739 } else if (tcf_vlan_action(a) == TCA_VLAN_ACT_PUSH) {
1740 if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
1743 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
1744 attr->vlan = tcf_vlan_push_vid(a);
1745 } else { /* action is TCA_VLAN_ACT_MODIFY */
1751 if (is_tcf_tunnel_release(a)) {
1752 attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
1761 int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
1762 struct tc_cls_flower_offload *f)
1764 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1765 struct mlx5e_tc_flow_parse_attr *parse_attr;
1766 struct mlx5e_tc_table *tc = &priv->fs.tc;
1767 struct mlx5e_tc_flow *flow;
1768 int attr_size, err = 0;
1771 if (esw && esw->mode == SRIOV_OFFLOADS) {
1772 flow_flags = MLX5E_TC_FLOW_ESWITCH;
1773 attr_size = sizeof(struct mlx5_esw_flow_attr);
1775 flow_flags = MLX5E_TC_FLOW_NIC;
1776 attr_size = sizeof(struct mlx5_nic_flow_attr);
1779 flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
1780 parse_attr = mlx5_vzalloc(sizeof(*parse_attr));
1781 if (!parse_attr || !flow) {
1786 flow->cookie = f->cookie;
1787 flow->flags = flow_flags;
1789 err = parse_cls_flower(priv, flow, &parse_attr->spec, f);
1793 if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
1794 err = parse_tc_fdb_actions(priv, f->exts, parse_attr, flow);
1796 goto err_handle_encap_flow;
1797 flow->rule = mlx5e_tc_add_fdb_flow(priv, parse_attr, flow);
1799 err = parse_tc_nic_actions(priv, f->exts, parse_attr, flow);
1802 flow->rule = mlx5e_tc_add_nic_flow(priv, parse_attr, flow);
1805 if (IS_ERR(flow->rule)) {
1806 err = PTR_ERR(flow->rule);
1810 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
1811 err = rhashtable_insert_fast(&tc->ht, &flow->node,
1816 if (flow->flags & MLX5E_TC_FLOW_ESWITCH &&
1817 !(flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP))
1822 mlx5e_tc_del_flow(priv, flow);
1824 err_handle_encap_flow:
1825 if (err == -EAGAIN) {
1826 err = rhashtable_insert_fast(&tc->ht, &flow->node,
1829 mlx5e_tc_del_flow(priv, flow);
1840 int mlx5e_delete_flower(struct mlx5e_priv *priv,
1841 struct tc_cls_flower_offload *f)
1843 struct mlx5e_tc_flow *flow;
1844 struct mlx5e_tc_table *tc = &priv->fs.tc;
1846 flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1851 rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
1853 mlx5e_tc_del_flow(priv, flow);
1860 int mlx5e_stats_flower(struct mlx5e_priv *priv,
1861 struct tc_cls_flower_offload *f)
1863 struct mlx5e_tc_table *tc = &priv->fs.tc;
1864 struct mlx5e_tc_flow *flow;
1865 struct tc_action *a;
1866 struct mlx5_fc *counter;
1872 flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1877 if (!(flow->flags & MLX5E_TC_FLOW_OFFLOADED))
1880 counter = mlx5_flow_rule_counter(flow->rule);
1884 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
1888 tcf_exts_to_list(f->exts, &actions);
1889 list_for_each_entry(a, &actions, list)
1890 tcf_action_stats_update(a, bytes, packets, lastuse);
1897 static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
1898 .head_offset = offsetof(struct mlx5e_tc_flow, node),
1899 .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
1900 .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
1901 .automatic_shrinking = true,
1904 int mlx5e_tc_init(struct mlx5e_priv *priv)
1906 struct mlx5e_tc_table *tc = &priv->fs.tc;
1908 tc->ht_params = mlx5e_tc_flow_ht_params;
1909 return rhashtable_init(&tc->ht, &tc->ht_params);
1912 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
1914 struct mlx5e_tc_flow *flow = ptr;
1915 struct mlx5e_priv *priv = arg;
1917 mlx5e_tc_del_flow(priv, flow);
1921 void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
1923 struct mlx5e_tc_table *tc = &priv->fs.tc;
1925 rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
1927 if (!IS_ERR_OR_NULL(tc->t)) {
1928 mlx5_destroy_flow_table(tc->t);