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/vxlan.h>
51 struct mlx5e_tc_flow {
52 struct rhash_head node;
54 struct mlx5_flow_handle *rule;
55 struct list_head encap; /* flows sharing the same encap */
56 struct mlx5_esw_flow_attr *attr;
60 MLX5_HEADER_TYPE_VXLAN = 0x0,
61 MLX5_HEADER_TYPE_NVGRE = 0x1,
64 #define MLX5E_TC_TABLE_NUM_ENTRIES 1024
65 #define MLX5E_TC_TABLE_NUM_GROUPS 4
67 static struct mlx5_flow_handle *
68 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
69 struct mlx5_flow_spec *spec,
70 u32 action, u32 flow_tag)
72 struct mlx5_core_dev *dev = priv->mdev;
73 struct mlx5_flow_destination dest = { 0 };
74 struct mlx5_flow_act flow_act = {
79 struct mlx5_fc *counter = NULL;
80 struct mlx5_flow_handle *rule;
81 bool table_created = false;
83 if (action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
84 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
85 dest.ft = priv->fs.vlan.ft.t;
86 } else if (action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
87 counter = mlx5_fc_create(dev, true);
89 return ERR_CAST(counter);
91 dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
92 dest.counter = counter;
95 if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
97 mlx5_create_auto_grouped_flow_table(priv->fs.ns,
99 MLX5E_TC_TABLE_NUM_ENTRIES,
100 MLX5E_TC_TABLE_NUM_GROUPS,
102 if (IS_ERR(priv->fs.tc.t)) {
103 netdev_err(priv->netdev,
104 "Failed to create tc offload table\n");
105 rule = ERR_CAST(priv->fs.tc.t);
109 table_created = true;
112 spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
113 rule = mlx5_add_flow_rules(priv->fs.tc.t, spec, &flow_act, &dest, 1);
122 mlx5_destroy_flow_table(priv->fs.tc.t);
123 priv->fs.tc.t = NULL;
126 mlx5_fc_destroy(dev, counter);
131 static struct mlx5_flow_handle *
132 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
133 struct mlx5_flow_spec *spec,
134 struct mlx5_esw_flow_attr *attr)
136 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
139 err = mlx5_eswitch_add_vlan_action(esw, attr);
143 return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
146 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
147 struct mlx5e_tc_flow *flow) {
148 struct list_head *next = flow->encap.next;
150 list_del(&flow->encap);
151 if (list_empty(next)) {
152 struct mlx5_encap_entry *e;
154 e = list_entry(next, struct mlx5_encap_entry, flows);
156 mlx5_encap_dealloc(priv->mdev, e->encap_id);
159 hlist_del_rcu(&e->encap_hlist);
164 /* we get here also when setting rule to the FW failed, etc. It means that the
165 * flow rule itself might not exist, but some offloading related to the actions
168 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
169 struct mlx5e_tc_flow *flow)
171 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
172 struct mlx5_fc *counter = NULL;
174 if (!IS_ERR(flow->rule)) {
175 counter = mlx5_flow_rule_counter(flow->rule);
176 mlx5_del_flow_rules(flow->rule);
177 mlx5_fc_destroy(priv->mdev, counter);
180 if (esw && esw->mode == SRIOV_OFFLOADS) {
181 mlx5_eswitch_del_vlan_action(esw, flow->attr);
182 if (flow->attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
183 mlx5e_detach_encap(priv, flow);
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;
192 static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
193 struct tc_cls_flower_offload *f)
195 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
197 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
199 void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
201 void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
204 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
205 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
207 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
208 struct flow_dissector_key_keyid *key =
209 skb_flow_dissector_target(f->dissector,
210 FLOW_DISSECTOR_KEY_ENC_KEYID,
212 struct flow_dissector_key_keyid *mask =
213 skb_flow_dissector_target(f->dissector,
214 FLOW_DISSECTOR_KEY_ENC_KEYID,
216 MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
217 be32_to_cpu(mask->keyid));
218 MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
219 be32_to_cpu(key->keyid));
223 static int parse_tunnel_attr(struct mlx5e_priv *priv,
224 struct mlx5_flow_spec *spec,
225 struct tc_cls_flower_offload *f)
227 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
229 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
232 struct flow_dissector_key_control *enc_control =
233 skb_flow_dissector_target(f->dissector,
234 FLOW_DISSECTOR_KEY_ENC_CONTROL,
237 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
238 struct flow_dissector_key_ports *key =
239 skb_flow_dissector_target(f->dissector,
240 FLOW_DISSECTOR_KEY_ENC_PORTS,
242 struct flow_dissector_key_ports *mask =
243 skb_flow_dissector_target(f->dissector,
244 FLOW_DISSECTOR_KEY_ENC_PORTS,
247 /* Full udp dst port must be given */
248 if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
249 goto vxlan_match_offload_err;
251 if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->dst)) &&
252 MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
253 parse_vxlan_attr(spec, f);
255 netdev_warn(priv->netdev,
256 "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
260 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
261 udp_dport, ntohs(mask->dst));
262 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
263 udp_dport, ntohs(key->dst));
265 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
266 udp_sport, ntohs(mask->src));
267 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
268 udp_sport, ntohs(key->src));
269 } else { /* udp dst port must be given */
270 vxlan_match_offload_err:
271 netdev_warn(priv->netdev,
272 "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
276 if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
277 struct flow_dissector_key_ipv4_addrs *key =
278 skb_flow_dissector_target(f->dissector,
279 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
281 struct flow_dissector_key_ipv4_addrs *mask =
282 skb_flow_dissector_target(f->dissector,
283 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
285 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
286 src_ipv4_src_ipv6.ipv4_layout.ipv4,
288 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
289 src_ipv4_src_ipv6.ipv4_layout.ipv4,
292 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
293 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
295 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
296 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
299 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
300 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
303 /* Enforce DMAC when offloading incoming tunneled flows.
304 * Flow counters require a match on the DMAC.
306 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
307 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
308 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
309 dmac_47_16), priv->netdev->dev_addr);
311 /* let software handle IP fragments */
312 MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
313 MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
318 static int __parse_cls_flower(struct mlx5e_priv *priv,
319 struct mlx5_flow_spec *spec,
320 struct tc_cls_flower_offload *f,
323 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
325 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
330 *min_inline = MLX5_INLINE_MODE_L2;
332 if (f->dissector->used_keys &
333 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
334 BIT(FLOW_DISSECTOR_KEY_BASIC) |
335 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
336 BIT(FLOW_DISSECTOR_KEY_VLAN) |
337 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
338 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
339 BIT(FLOW_DISSECTOR_KEY_PORTS) |
340 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
341 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
342 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
343 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
344 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL))) {
345 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
346 f->dissector->used_keys);
350 if ((dissector_uses_key(f->dissector,
351 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
352 dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
353 dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
354 dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
355 struct flow_dissector_key_control *key =
356 skb_flow_dissector_target(f->dissector,
357 FLOW_DISSECTOR_KEY_ENC_CONTROL,
359 switch (key->addr_type) {
360 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
361 if (parse_tunnel_attr(priv, spec, f))
364 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
365 netdev_warn(priv->netdev,
366 "IPv6 tunnel decap offload isn't supported\n");
371 /* In decap flow, header pointers should point to the inner
372 * headers, outer header were already set by parse_tunnel_attr
374 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
376 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
380 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
381 struct flow_dissector_key_control *key =
382 skb_flow_dissector_target(f->dissector,
383 FLOW_DISSECTOR_KEY_CONTROL,
386 struct flow_dissector_key_control *mask =
387 skb_flow_dissector_target(f->dissector,
388 FLOW_DISSECTOR_KEY_CONTROL,
390 addr_type = key->addr_type;
392 if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
393 MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
394 MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
395 key->flags & FLOW_DIS_IS_FRAGMENT);
397 /* the HW doesn't need L3 inline to match on frag=no */
398 if (key->flags & FLOW_DIS_IS_FRAGMENT)
399 *min_inline = MLX5_INLINE_MODE_IP;
403 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
404 struct flow_dissector_key_basic *key =
405 skb_flow_dissector_target(f->dissector,
406 FLOW_DISSECTOR_KEY_BASIC,
408 struct flow_dissector_key_basic *mask =
409 skb_flow_dissector_target(f->dissector,
410 FLOW_DISSECTOR_KEY_BASIC,
412 ip_proto = key->ip_proto;
414 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
415 ntohs(mask->n_proto));
416 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
417 ntohs(key->n_proto));
419 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
421 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
425 *min_inline = MLX5_INLINE_MODE_IP;
428 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
429 struct flow_dissector_key_eth_addrs *key =
430 skb_flow_dissector_target(f->dissector,
431 FLOW_DISSECTOR_KEY_ETH_ADDRS,
433 struct flow_dissector_key_eth_addrs *mask =
434 skb_flow_dissector_target(f->dissector,
435 FLOW_DISSECTOR_KEY_ETH_ADDRS,
438 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
441 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
445 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
448 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
453 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
454 struct flow_dissector_key_vlan *key =
455 skb_flow_dissector_target(f->dissector,
456 FLOW_DISSECTOR_KEY_VLAN,
458 struct flow_dissector_key_vlan *mask =
459 skb_flow_dissector_target(f->dissector,
460 FLOW_DISSECTOR_KEY_VLAN,
462 if (mask->vlan_id || mask->vlan_priority) {
463 MLX5_SET(fte_match_set_lyr_2_4, headers_c, vlan_tag, 1);
464 MLX5_SET(fte_match_set_lyr_2_4, headers_v, vlan_tag, 1);
466 MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
467 MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
469 MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
470 MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
474 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
475 struct flow_dissector_key_ipv4_addrs *key =
476 skb_flow_dissector_target(f->dissector,
477 FLOW_DISSECTOR_KEY_IPV4_ADDRS,
479 struct flow_dissector_key_ipv4_addrs *mask =
480 skb_flow_dissector_target(f->dissector,
481 FLOW_DISSECTOR_KEY_IPV4_ADDRS,
484 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
485 src_ipv4_src_ipv6.ipv4_layout.ipv4),
486 &mask->src, sizeof(mask->src));
487 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
488 src_ipv4_src_ipv6.ipv4_layout.ipv4),
489 &key->src, sizeof(key->src));
490 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
491 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
492 &mask->dst, sizeof(mask->dst));
493 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
494 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
495 &key->dst, sizeof(key->dst));
497 if (mask->src || mask->dst)
498 *min_inline = MLX5_INLINE_MODE_IP;
501 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
502 struct flow_dissector_key_ipv6_addrs *key =
503 skb_flow_dissector_target(f->dissector,
504 FLOW_DISSECTOR_KEY_IPV6_ADDRS,
506 struct flow_dissector_key_ipv6_addrs *mask =
507 skb_flow_dissector_target(f->dissector,
508 FLOW_DISSECTOR_KEY_IPV6_ADDRS,
511 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
512 src_ipv4_src_ipv6.ipv6_layout.ipv6),
513 &mask->src, sizeof(mask->src));
514 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
515 src_ipv4_src_ipv6.ipv6_layout.ipv6),
516 &key->src, sizeof(key->src));
518 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
519 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
520 &mask->dst, sizeof(mask->dst));
521 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
522 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
523 &key->dst, sizeof(key->dst));
525 if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
526 ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
527 *min_inline = MLX5_INLINE_MODE_IP;
530 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
531 struct flow_dissector_key_ports *key =
532 skb_flow_dissector_target(f->dissector,
533 FLOW_DISSECTOR_KEY_PORTS,
535 struct flow_dissector_key_ports *mask =
536 skb_flow_dissector_target(f->dissector,
537 FLOW_DISSECTOR_KEY_PORTS,
541 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
542 tcp_sport, ntohs(mask->src));
543 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
544 tcp_sport, ntohs(key->src));
546 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
547 tcp_dport, ntohs(mask->dst));
548 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
549 tcp_dport, ntohs(key->dst));
553 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
554 udp_sport, ntohs(mask->src));
555 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
556 udp_sport, ntohs(key->src));
558 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
559 udp_dport, ntohs(mask->dst));
560 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
561 udp_dport, ntohs(key->dst));
564 netdev_err(priv->netdev,
565 "Only UDP and TCP transport are supported\n");
569 if (mask->src || mask->dst)
570 *min_inline = MLX5_INLINE_MODE_TCP_UDP;
576 static int parse_cls_flower(struct mlx5e_priv *priv,
577 struct mlx5_flow_spec *spec,
578 struct tc_cls_flower_offload *f)
580 struct mlx5_core_dev *dev = priv->mdev;
581 struct mlx5_eswitch *esw = dev->priv.eswitch;
582 struct mlx5_eswitch_rep *rep = priv->ppriv;
586 err = __parse_cls_flower(priv, spec, f, &min_inline);
588 if (!err && esw->mode == SRIOV_OFFLOADS &&
589 rep->vport != FDB_UPLINK_VPORT) {
590 if (min_inline > esw->offloads.inline_mode) {
591 netdev_warn(priv->netdev,
592 "Flow is not offloaded due to min inline setting, required %d actual %d\n",
593 min_inline, esw->offloads.inline_mode);
601 static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
602 u32 *action, u32 *flow_tag)
604 const struct tc_action *a;
607 if (tc_no_actions(exts))
610 *flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
613 tcf_exts_to_list(exts, &actions);
614 list_for_each_entry(a, &actions, list) {
615 /* Only support a single action per rule */
619 if (is_tcf_gact_shot(a)) {
620 *action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
621 if (MLX5_CAP_FLOWTABLE(priv->mdev,
622 flow_table_properties_nic_receive.flow_counter))
623 *action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
627 if (is_tcf_skbedit_mark(a)) {
628 u32 mark = tcf_skbedit_mark(a);
630 if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
631 netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
637 *action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
647 static inline int cmp_encap_info(struct mlx5_encap_info *a,
648 struct mlx5_encap_info *b)
650 return memcmp(a, b, sizeof(*a));
653 static inline int hash_encap_info(struct mlx5_encap_info *info)
655 return jhash(info, sizeof(*info), 0);
658 static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
659 struct net_device *mirred_dev,
660 struct net_device **out_dev,
662 struct neighbour **out_n,
666 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
668 struct neighbour *n = NULL;
671 #if IS_ENABLED(CONFIG_INET)
674 rt = ip_route_output_key(dev_net(mirred_dev), fl4);
675 ret = PTR_ERR_OR_ZERO(rt);
681 /* if the egress device isn't on the same HW e-switch, we use the uplink */
682 if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
683 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
685 *out_dev = rt->dst.dev;
687 ttl = ip4_dst_hoplimit(&rt->dst);
688 n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
700 static int gen_vxlan_header_ipv4(struct net_device *out_dev,
702 unsigned char h_dest[ETH_ALEN],
709 int encap_size = VXLAN_HLEN + sizeof(struct iphdr) + ETH_HLEN;
710 struct ethhdr *eth = (struct ethhdr *)buf;
711 struct iphdr *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
712 struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
713 struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
715 memset(buf, 0, encap_size);
717 ether_addr_copy(eth->h_dest, h_dest);
718 ether_addr_copy(eth->h_source, out_dev->dev_addr);
719 eth->h_proto = htons(ETH_P_IP);
725 ip->protocol = IPPROTO_UDP;
729 udp->dest = udp_dst_port;
730 vxh->vx_flags = VXLAN_HF_VNI;
731 vxh->vx_vni = vxlan_vni_field(vx_vni);
736 static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
737 struct net_device *mirred_dev,
738 struct mlx5_encap_entry *e,
739 struct net_device **out_dev)
741 int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
742 struct neighbour *n = NULL;
743 struct flowi4 fl4 = {};
750 encap_header = kzalloc(max_encap_size, GFP_KERNEL);
754 switch (e->tunnel_type) {
755 case MLX5_HEADER_TYPE_VXLAN:
756 fl4.flowi4_proto = IPPROTO_UDP;
757 fl4.fl4_dport = e->tun_info.tp_dst;
763 fl4.daddr = e->tun_info.daddr;
765 err = mlx5e_route_lookup_ipv4(priv, mirred_dev, out_dev,
766 &fl4, &n, &saddr, &ttl);
771 e->out_dev = *out_dev;
773 if (!(n->nud_state & NUD_VALID)) {
774 pr_warn("%s: can't offload, neighbour to %pI4 invalid\n", __func__, &fl4.daddr);
779 neigh_ha_snapshot(e->h_dest, n, *out_dev);
781 switch (e->tunnel_type) {
782 case MLX5_HEADER_TYPE_VXLAN:
783 encap_size = gen_vxlan_header_ipv4(*out_dev, encap_header,
786 saddr, e->tun_info.tp_dst,
794 err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
795 encap_size, encap_header, &e->encap_id);
803 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
804 struct ip_tunnel_info *tun_info,
805 struct net_device *mirred_dev,
806 struct mlx5_esw_flow_attr *attr)
808 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
809 unsigned short family = ip_tunnel_info_af(tun_info);
810 struct ip_tunnel_key *key = &tun_info->key;
811 struct mlx5_encap_info info;
812 struct mlx5_encap_entry *e;
813 struct net_device *out_dev;
819 /* udp dst port must be set */
820 if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
821 goto vxlan_encap_offload_err;
823 /* setting udp src port isn't supported */
824 if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
825 vxlan_encap_offload_err:
826 netdev_warn(priv->netdev,
827 "must set udp dst port and not set udp src port\n");
831 if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->tp_dst)) &&
832 MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
833 info.tp_dst = key->tp_dst;
834 info.tun_id = tunnel_id_to_key32(key->tun_id);
835 tunnel_type = MLX5_HEADER_TYPE_VXLAN;
837 netdev_warn(priv->netdev,
838 "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
844 info.daddr = key->u.ipv4.dst;
847 netdev_warn(priv->netdev,
848 "IPv6 tunnel encap offload isn't supported\n");
853 hash_key = hash_encap_info(&info);
855 hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
856 encap_hlist, hash_key) {
857 if (!cmp_encap_info(&e->tun_info, &info)) {
868 e = kzalloc(sizeof(*e), GFP_KERNEL);
873 e->tunnel_type = tunnel_type;
874 INIT_LIST_HEAD(&e->flows);
876 err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e, &out_dev);
881 hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
890 static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
891 struct mlx5e_tc_flow *flow)
893 struct mlx5_esw_flow_attr *attr = flow->attr;
894 struct ip_tunnel_info *info = NULL;
895 const struct tc_action *a;
900 if (tc_no_actions(exts))
903 memset(attr, 0, sizeof(*attr));
904 attr->in_rep = priv->ppriv;
906 tcf_exts_to_list(exts, &actions);
907 list_for_each_entry(a, &actions, list) {
908 if (is_tcf_gact_shot(a)) {
909 attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
910 MLX5_FLOW_CONTEXT_ACTION_COUNT;
914 if (is_tcf_mirred_egress_redirect(a)) {
915 int ifindex = tcf_mirred_ifindex(a);
916 struct net_device *out_dev;
917 struct mlx5e_priv *out_priv;
919 out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
921 if (switchdev_port_same_parent_id(priv->netdev,
923 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
924 MLX5_FLOW_CONTEXT_ACTION_COUNT;
925 out_priv = netdev_priv(out_dev);
926 attr->out_rep = out_priv->ppriv;
928 err = mlx5e_attach_encap(priv, info,
932 list_add(&flow->encap, &attr->encap->flows);
933 attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
934 MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
935 MLX5_FLOW_CONTEXT_ACTION_COUNT;
936 out_priv = netdev_priv(attr->encap->out_dev);
937 attr->out_rep = out_priv->ppriv;
939 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
940 priv->netdev->name, out_dev->name);
946 if (is_tcf_tunnel_set(a)) {
947 info = tcf_tunnel_info(a);
955 if (is_tcf_vlan(a)) {
956 if (tcf_vlan_action(a) == VLAN_F_POP) {
957 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
958 } else if (tcf_vlan_action(a) == VLAN_F_PUSH) {
959 if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
962 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
963 attr->vlan = tcf_vlan_push_vid(a);
968 if (is_tcf_tunnel_release(a)) {
969 attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
978 int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
979 struct tc_cls_flower_offload *f)
981 struct mlx5e_tc_table *tc = &priv->fs.tc;
983 bool fdb_flow = false;
984 u32 flow_tag, action;
985 struct mlx5e_tc_flow *flow;
986 struct mlx5_flow_spec *spec;
987 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
989 if (esw && esw->mode == SRIOV_OFFLOADS)
993 flow = kzalloc(sizeof(*flow) +
994 sizeof(struct mlx5_esw_flow_attr),
997 flow = kzalloc(sizeof(*flow), GFP_KERNEL);
999 spec = mlx5_vzalloc(sizeof(*spec));
1000 if (!spec || !flow) {
1005 flow->cookie = f->cookie;
1007 err = parse_cls_flower(priv, spec, f);
1012 flow->attr = (struct mlx5_esw_flow_attr *)(flow + 1);
1013 err = parse_tc_fdb_actions(priv, f->exts, flow);
1016 flow->rule = mlx5e_tc_add_fdb_flow(priv, spec, flow->attr);
1018 err = parse_tc_nic_actions(priv, f->exts, &action, &flow_tag);
1021 flow->rule = mlx5e_tc_add_nic_flow(priv, spec, action, flow_tag);
1024 if (IS_ERR(flow->rule)) {
1025 err = PTR_ERR(flow->rule);
1029 err = rhashtable_insert_fast(&tc->ht, &flow->node,
1037 mlx5e_tc_del_flow(priv, flow);
1046 int mlx5e_delete_flower(struct mlx5e_priv *priv,
1047 struct tc_cls_flower_offload *f)
1049 struct mlx5e_tc_flow *flow;
1050 struct mlx5e_tc_table *tc = &priv->fs.tc;
1052 flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1057 rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
1059 mlx5e_tc_del_flow(priv, flow);
1067 int mlx5e_stats_flower(struct mlx5e_priv *priv,
1068 struct tc_cls_flower_offload *f)
1070 struct mlx5e_tc_table *tc = &priv->fs.tc;
1071 struct mlx5e_tc_flow *flow;
1072 struct tc_action *a;
1073 struct mlx5_fc *counter;
1079 flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1084 counter = mlx5_flow_rule_counter(flow->rule);
1088 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
1090 tcf_exts_to_list(f->exts, &actions);
1091 list_for_each_entry(a, &actions, list)
1092 tcf_action_stats_update(a, bytes, packets, lastuse);
1097 static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
1098 .head_offset = offsetof(struct mlx5e_tc_flow, node),
1099 .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
1100 .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
1101 .automatic_shrinking = true,
1104 int mlx5e_tc_init(struct mlx5e_priv *priv)
1106 struct mlx5e_tc_table *tc = &priv->fs.tc;
1108 tc->ht_params = mlx5e_tc_flow_ht_params;
1109 return rhashtable_init(&tc->ht, &tc->ht_params);
1112 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
1114 struct mlx5e_tc_flow *flow = ptr;
1115 struct mlx5e_priv *priv = arg;
1117 mlx5e_tc_del_flow(priv, flow);
1121 void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
1123 struct mlx5e_tc_table *tc = &priv->fs.tc;
1125 rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
1127 if (!IS_ERR_OR_NULL(tc->t)) {
1128 mlx5_destroy_flow_table(tc->t);