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[mirror_ubuntu-bionic-kernel.git] / drivers / net / ethernet / mellanox / mlx5 / core / en_tc.c
1 /*
2 * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
3 *
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:
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 *
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
16 * disclaimer.
17 *
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.
22 *
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
30 * SOFTWARE.
31 */
32
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>
46 #include "en.h"
47 #include "en_tc.h"
48 #include "eswitch.h"
49 #include "vxlan.h"
50
51 enum {
52 MLX5E_TC_FLOW_ESWITCH = BIT(0),
53 };
54
55 struct mlx5e_tc_flow {
56 struct rhash_head node;
57 u64 cookie;
58 u8 flags;
59 struct mlx5_flow_handle *rule;
60 struct list_head encap; /* flows sharing the same encap */
61 struct mlx5_esw_flow_attr *attr;
62 };
63
64 enum {
65 MLX5_HEADER_TYPE_VXLAN = 0x0,
66 MLX5_HEADER_TYPE_NVGRE = 0x1,
67 };
68
69 #define MLX5E_TC_TABLE_NUM_ENTRIES 1024
70 #define MLX5E_TC_TABLE_NUM_GROUPS 4
71
72 static struct mlx5_flow_handle *
73 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
74 struct mlx5_flow_spec *spec,
75 u32 action, u32 flow_tag)
76 {
77 struct mlx5_core_dev *dev = priv->mdev;
78 struct mlx5_flow_destination dest = { 0 };
79 struct mlx5_flow_act flow_act = {
80 .action = action,
81 .flow_tag = flow_tag,
82 .encap_id = 0,
83 };
84 struct mlx5_fc *counter = NULL;
85 struct mlx5_flow_handle *rule;
86 bool table_created = false;
87
88 if (action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
89 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
90 dest.ft = priv->fs.vlan.ft.t;
91 } else if (action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
92 counter = mlx5_fc_create(dev, true);
93 if (IS_ERR(counter))
94 return ERR_CAST(counter);
95
96 dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
97 dest.counter = counter;
98 }
99
100 if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
101 priv->fs.tc.t =
102 mlx5_create_auto_grouped_flow_table(priv->fs.ns,
103 MLX5E_TC_PRIO,
104 MLX5E_TC_TABLE_NUM_ENTRIES,
105 MLX5E_TC_TABLE_NUM_GROUPS,
106 0, 0);
107 if (IS_ERR(priv->fs.tc.t)) {
108 netdev_err(priv->netdev,
109 "Failed to create tc offload table\n");
110 rule = ERR_CAST(priv->fs.tc.t);
111 goto err_create_ft;
112 }
113
114 table_created = true;
115 }
116
117 spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
118 rule = mlx5_add_flow_rules(priv->fs.tc.t, spec, &flow_act, &dest, 1);
119
120 if (IS_ERR(rule))
121 goto err_add_rule;
122
123 return rule;
124
125 err_add_rule:
126 if (table_created) {
127 mlx5_destroy_flow_table(priv->fs.tc.t);
128 priv->fs.tc.t = NULL;
129 }
130 err_create_ft:
131 mlx5_fc_destroy(dev, counter);
132
133 return rule;
134 }
135
136 static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
137 struct mlx5e_tc_flow *flow)
138 {
139 struct mlx5_fc *counter = NULL;
140
141 if (!IS_ERR(flow->rule)) {
142 counter = mlx5_flow_rule_counter(flow->rule);
143 mlx5_del_flow_rules(flow->rule);
144 mlx5_fc_destroy(priv->mdev, counter);
145 }
146
147 if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
148 mlx5_destroy_flow_table(priv->fs.tc.t);
149 priv->fs.tc.t = NULL;
150 }
151 }
152
153 static struct mlx5_flow_handle *
154 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
155 struct mlx5_flow_spec *spec,
156 struct mlx5_esw_flow_attr *attr)
157 {
158 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
159 int err;
160
161 err = mlx5_eswitch_add_vlan_action(esw, attr);
162 if (err)
163 return ERR_PTR(err);
164
165 return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
166 }
167
168 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
169 struct mlx5e_tc_flow *flow);
170
171 static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
172 struct mlx5e_tc_flow *flow)
173 {
174 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
175
176 mlx5_eswitch_del_offloaded_rule(esw, flow->rule, flow->attr);
177
178 mlx5_eswitch_del_vlan_action(esw, flow->attr);
179
180 if (flow->attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
181 mlx5e_detach_encap(priv, flow);
182 }
183
184 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
185 struct mlx5e_tc_flow *flow)
186 {
187 struct list_head *next = flow->encap.next;
188
189 list_del(&flow->encap);
190 if (list_empty(next)) {
191 struct mlx5_encap_entry *e;
192
193 e = list_entry(next, struct mlx5_encap_entry, flows);
194 if (e->n) {
195 mlx5_encap_dealloc(priv->mdev, e->encap_id);
196 neigh_release(e->n);
197 }
198 hlist_del_rcu(&e->encap_hlist);
199 kfree(e);
200 }
201 }
202
203 /* we get here also when setting rule to the FW failed, etc. It means that the
204 * flow rule itself might not exist, but some offloading related to the actions
205 * should be cleaned.
206 */
207 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
208 struct mlx5e_tc_flow *flow)
209 {
210 if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
211 mlx5e_tc_del_fdb_flow(priv, flow);
212 else
213 mlx5e_tc_del_nic_flow(priv, flow);
214 }
215
216 static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
217 struct tc_cls_flower_offload *f)
218 {
219 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
220 outer_headers);
221 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
222 outer_headers);
223 void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
224 misc_parameters);
225 void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
226 misc_parameters);
227
228 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
229 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
230
231 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
232 struct flow_dissector_key_keyid *key =
233 skb_flow_dissector_target(f->dissector,
234 FLOW_DISSECTOR_KEY_ENC_KEYID,
235 f->key);
236 struct flow_dissector_key_keyid *mask =
237 skb_flow_dissector_target(f->dissector,
238 FLOW_DISSECTOR_KEY_ENC_KEYID,
239 f->mask);
240 MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
241 be32_to_cpu(mask->keyid));
242 MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
243 be32_to_cpu(key->keyid));
244 }
245 }
246
247 static int parse_tunnel_attr(struct mlx5e_priv *priv,
248 struct mlx5_flow_spec *spec,
249 struct tc_cls_flower_offload *f)
250 {
251 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
252 outer_headers);
253 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
254 outer_headers);
255
256 struct flow_dissector_key_control *enc_control =
257 skb_flow_dissector_target(f->dissector,
258 FLOW_DISSECTOR_KEY_ENC_CONTROL,
259 f->key);
260
261 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
262 struct flow_dissector_key_ports *key =
263 skb_flow_dissector_target(f->dissector,
264 FLOW_DISSECTOR_KEY_ENC_PORTS,
265 f->key);
266 struct flow_dissector_key_ports *mask =
267 skb_flow_dissector_target(f->dissector,
268 FLOW_DISSECTOR_KEY_ENC_PORTS,
269 f->mask);
270 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
271 struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw);
272 struct mlx5e_priv *up_priv = netdev_priv(up_dev);
273
274 /* Full udp dst port must be given */
275 if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
276 goto vxlan_match_offload_err;
277
278 if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->dst)) &&
279 MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
280 parse_vxlan_attr(spec, f);
281 else {
282 netdev_warn(priv->netdev,
283 "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
284 return -EOPNOTSUPP;
285 }
286
287 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
288 udp_dport, ntohs(mask->dst));
289 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
290 udp_dport, ntohs(key->dst));
291
292 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
293 udp_sport, ntohs(mask->src));
294 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
295 udp_sport, ntohs(key->src));
296 } else { /* udp dst port must be given */
297 vxlan_match_offload_err:
298 netdev_warn(priv->netdev,
299 "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
300 return -EOPNOTSUPP;
301 }
302
303 if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
304 struct flow_dissector_key_ipv4_addrs *key =
305 skb_flow_dissector_target(f->dissector,
306 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
307 f->key);
308 struct flow_dissector_key_ipv4_addrs *mask =
309 skb_flow_dissector_target(f->dissector,
310 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
311 f->mask);
312 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
313 src_ipv4_src_ipv6.ipv4_layout.ipv4,
314 ntohl(mask->src));
315 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
316 src_ipv4_src_ipv6.ipv4_layout.ipv4,
317 ntohl(key->src));
318
319 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
320 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
321 ntohl(mask->dst));
322 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
323 dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
324 ntohl(key->dst));
325
326 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
327 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
328 } else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
329 struct flow_dissector_key_ipv6_addrs *key =
330 skb_flow_dissector_target(f->dissector,
331 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
332 f->key);
333 struct flow_dissector_key_ipv6_addrs *mask =
334 skb_flow_dissector_target(f->dissector,
335 FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
336 f->mask);
337
338 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
339 src_ipv4_src_ipv6.ipv6_layout.ipv6),
340 &mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
341 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
342 src_ipv4_src_ipv6.ipv6_layout.ipv6),
343 &key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
344
345 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
346 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
347 &mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
348 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
349 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
350 &key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
351
352 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
353 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6);
354 }
355
356 /* Enforce DMAC when offloading incoming tunneled flows.
357 * Flow counters require a match on the DMAC.
358 */
359 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
360 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
361 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
362 dmac_47_16), priv->netdev->dev_addr);
363
364 /* let software handle IP fragments */
365 MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
366 MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
367
368 return 0;
369 }
370
371 static int __parse_cls_flower(struct mlx5e_priv *priv,
372 struct mlx5_flow_spec *spec,
373 struct tc_cls_flower_offload *f,
374 u8 *min_inline)
375 {
376 void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
377 outer_headers);
378 void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
379 outer_headers);
380 u16 addr_type = 0;
381 u8 ip_proto = 0;
382
383 *min_inline = MLX5_INLINE_MODE_L2;
384
385 if (f->dissector->used_keys &
386 ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
387 BIT(FLOW_DISSECTOR_KEY_BASIC) |
388 BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
389 BIT(FLOW_DISSECTOR_KEY_VLAN) |
390 BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
391 BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
392 BIT(FLOW_DISSECTOR_KEY_PORTS) |
393 BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
394 BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
395 BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
396 BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
397 BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL))) {
398 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
399 f->dissector->used_keys);
400 return -EOPNOTSUPP;
401 }
402
403 if ((dissector_uses_key(f->dissector,
404 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
405 dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
406 dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
407 dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
408 struct flow_dissector_key_control *key =
409 skb_flow_dissector_target(f->dissector,
410 FLOW_DISSECTOR_KEY_ENC_CONTROL,
411 f->key);
412 switch (key->addr_type) {
413 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
414 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
415 if (parse_tunnel_attr(priv, spec, f))
416 return -EOPNOTSUPP;
417 break;
418 default:
419 return -EOPNOTSUPP;
420 }
421
422 /* In decap flow, header pointers should point to the inner
423 * headers, outer header were already set by parse_tunnel_attr
424 */
425 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
426 inner_headers);
427 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
428 inner_headers);
429 }
430
431 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
432 struct flow_dissector_key_control *key =
433 skb_flow_dissector_target(f->dissector,
434 FLOW_DISSECTOR_KEY_CONTROL,
435 f->key);
436
437 struct flow_dissector_key_control *mask =
438 skb_flow_dissector_target(f->dissector,
439 FLOW_DISSECTOR_KEY_CONTROL,
440 f->mask);
441 addr_type = key->addr_type;
442
443 if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
444 MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
445 MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
446 key->flags & FLOW_DIS_IS_FRAGMENT);
447
448 /* the HW doesn't need L3 inline to match on frag=no */
449 if (key->flags & FLOW_DIS_IS_FRAGMENT)
450 *min_inline = MLX5_INLINE_MODE_IP;
451 }
452 }
453
454 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
455 struct flow_dissector_key_basic *key =
456 skb_flow_dissector_target(f->dissector,
457 FLOW_DISSECTOR_KEY_BASIC,
458 f->key);
459 struct flow_dissector_key_basic *mask =
460 skb_flow_dissector_target(f->dissector,
461 FLOW_DISSECTOR_KEY_BASIC,
462 f->mask);
463 ip_proto = key->ip_proto;
464
465 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
466 ntohs(mask->n_proto));
467 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
468 ntohs(key->n_proto));
469
470 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
471 mask->ip_proto);
472 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
473 key->ip_proto);
474
475 if (mask->ip_proto)
476 *min_inline = MLX5_INLINE_MODE_IP;
477 }
478
479 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
480 struct flow_dissector_key_eth_addrs *key =
481 skb_flow_dissector_target(f->dissector,
482 FLOW_DISSECTOR_KEY_ETH_ADDRS,
483 f->key);
484 struct flow_dissector_key_eth_addrs *mask =
485 skb_flow_dissector_target(f->dissector,
486 FLOW_DISSECTOR_KEY_ETH_ADDRS,
487 f->mask);
488
489 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
490 dmac_47_16),
491 mask->dst);
492 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
493 dmac_47_16),
494 key->dst);
495
496 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
497 smac_47_16),
498 mask->src);
499 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
500 smac_47_16),
501 key->src);
502 }
503
504 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
505 struct flow_dissector_key_vlan *key =
506 skb_flow_dissector_target(f->dissector,
507 FLOW_DISSECTOR_KEY_VLAN,
508 f->key);
509 struct flow_dissector_key_vlan *mask =
510 skb_flow_dissector_target(f->dissector,
511 FLOW_DISSECTOR_KEY_VLAN,
512 f->mask);
513 if (mask->vlan_id || mask->vlan_priority) {
514 MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
515 MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1);
516
517 MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
518 MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
519
520 MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
521 MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
522 }
523 }
524
525 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
526 struct flow_dissector_key_ipv4_addrs *key =
527 skb_flow_dissector_target(f->dissector,
528 FLOW_DISSECTOR_KEY_IPV4_ADDRS,
529 f->key);
530 struct flow_dissector_key_ipv4_addrs *mask =
531 skb_flow_dissector_target(f->dissector,
532 FLOW_DISSECTOR_KEY_IPV4_ADDRS,
533 f->mask);
534
535 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
536 src_ipv4_src_ipv6.ipv4_layout.ipv4),
537 &mask->src, sizeof(mask->src));
538 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
539 src_ipv4_src_ipv6.ipv4_layout.ipv4),
540 &key->src, sizeof(key->src));
541 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
542 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
543 &mask->dst, sizeof(mask->dst));
544 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
545 dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
546 &key->dst, sizeof(key->dst));
547
548 if (mask->src || mask->dst)
549 *min_inline = MLX5_INLINE_MODE_IP;
550 }
551
552 if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
553 struct flow_dissector_key_ipv6_addrs *key =
554 skb_flow_dissector_target(f->dissector,
555 FLOW_DISSECTOR_KEY_IPV6_ADDRS,
556 f->key);
557 struct flow_dissector_key_ipv6_addrs *mask =
558 skb_flow_dissector_target(f->dissector,
559 FLOW_DISSECTOR_KEY_IPV6_ADDRS,
560 f->mask);
561
562 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
563 src_ipv4_src_ipv6.ipv6_layout.ipv6),
564 &mask->src, sizeof(mask->src));
565 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
566 src_ipv4_src_ipv6.ipv6_layout.ipv6),
567 &key->src, sizeof(key->src));
568
569 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
570 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
571 &mask->dst, sizeof(mask->dst));
572 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
573 dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
574 &key->dst, sizeof(key->dst));
575
576 if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
577 ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
578 *min_inline = MLX5_INLINE_MODE_IP;
579 }
580
581 if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
582 struct flow_dissector_key_ports *key =
583 skb_flow_dissector_target(f->dissector,
584 FLOW_DISSECTOR_KEY_PORTS,
585 f->key);
586 struct flow_dissector_key_ports *mask =
587 skb_flow_dissector_target(f->dissector,
588 FLOW_DISSECTOR_KEY_PORTS,
589 f->mask);
590 switch (ip_proto) {
591 case IPPROTO_TCP:
592 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
593 tcp_sport, ntohs(mask->src));
594 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
595 tcp_sport, ntohs(key->src));
596
597 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
598 tcp_dport, ntohs(mask->dst));
599 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
600 tcp_dport, ntohs(key->dst));
601 break;
602
603 case IPPROTO_UDP:
604 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
605 udp_sport, ntohs(mask->src));
606 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
607 udp_sport, ntohs(key->src));
608
609 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
610 udp_dport, ntohs(mask->dst));
611 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
612 udp_dport, ntohs(key->dst));
613 break;
614 default:
615 netdev_err(priv->netdev,
616 "Only UDP and TCP transport are supported\n");
617 return -EINVAL;
618 }
619
620 if (mask->src || mask->dst)
621 *min_inline = MLX5_INLINE_MODE_TCP_UDP;
622 }
623
624 return 0;
625 }
626
627 static int parse_cls_flower(struct mlx5e_priv *priv,
628 struct mlx5e_tc_flow *flow,
629 struct mlx5_flow_spec *spec,
630 struct tc_cls_flower_offload *f)
631 {
632 struct mlx5_core_dev *dev = priv->mdev;
633 struct mlx5_eswitch *esw = dev->priv.eswitch;
634 struct mlx5_eswitch_rep *rep = priv->ppriv;
635 u8 min_inline;
636 int err;
637
638 err = __parse_cls_flower(priv, spec, f, &min_inline);
639
640 if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH) &&
641 rep->vport != FDB_UPLINK_VPORT) {
642 if (min_inline > esw->offloads.inline_mode) {
643 netdev_warn(priv->netdev,
644 "Flow is not offloaded due to min inline setting, required %d actual %d\n",
645 min_inline, esw->offloads.inline_mode);
646 return -EOPNOTSUPP;
647 }
648 }
649
650 return err;
651 }
652
653 static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
654 u32 *action, u32 *flow_tag)
655 {
656 const struct tc_action *a;
657 LIST_HEAD(actions);
658
659 if (tc_no_actions(exts))
660 return -EINVAL;
661
662 *flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
663 *action = 0;
664
665 tcf_exts_to_list(exts, &actions);
666 list_for_each_entry(a, &actions, list) {
667 /* Only support a single action per rule */
668 if (*action)
669 return -EINVAL;
670
671 if (is_tcf_gact_shot(a)) {
672 *action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
673 if (MLX5_CAP_FLOWTABLE(priv->mdev,
674 flow_table_properties_nic_receive.flow_counter))
675 *action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
676 continue;
677 }
678
679 if (is_tcf_skbedit_mark(a)) {
680 u32 mark = tcf_skbedit_mark(a);
681
682 if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
683 netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
684 mark);
685 return -EINVAL;
686 }
687
688 *flow_tag = mark;
689 *action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
690 continue;
691 }
692
693 return -EINVAL;
694 }
695
696 return 0;
697 }
698
699 static inline int cmp_encap_info(struct ip_tunnel_key *a,
700 struct ip_tunnel_key *b)
701 {
702 return memcmp(a, b, sizeof(*a));
703 }
704
705 static inline int hash_encap_info(struct ip_tunnel_key *key)
706 {
707 return jhash(key, sizeof(*key), 0);
708 }
709
710 static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
711 struct net_device *mirred_dev,
712 struct net_device **out_dev,
713 struct flowi4 *fl4,
714 struct neighbour **out_n,
715 int *out_ttl)
716 {
717 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
718 struct rtable *rt;
719 struct neighbour *n = NULL;
720
721 #if IS_ENABLED(CONFIG_INET)
722 int ret;
723
724 rt = ip_route_output_key(dev_net(mirred_dev), fl4);
725 ret = PTR_ERR_OR_ZERO(rt);
726 if (ret)
727 return ret;
728 #else
729 return -EOPNOTSUPP;
730 #endif
731 /* if the egress device isn't on the same HW e-switch, we use the uplink */
732 if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
733 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
734 else
735 *out_dev = rt->dst.dev;
736
737 *out_ttl = ip4_dst_hoplimit(&rt->dst);
738 n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
739 ip_rt_put(rt);
740 if (!n)
741 return -ENOMEM;
742
743 *out_n = n;
744 return 0;
745 }
746
747 static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
748 struct net_device *mirred_dev,
749 struct net_device **out_dev,
750 struct flowi6 *fl6,
751 struct neighbour **out_n,
752 int *out_ttl)
753 {
754 struct neighbour *n = NULL;
755 struct dst_entry *dst;
756
757 #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
758 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
759 int ret;
760
761 dst = ip6_route_output(dev_net(mirred_dev), NULL, fl6);
762 ret = dst->error;
763 if (ret) {
764 dst_release(dst);
765 return ret;
766 }
767
768 *out_ttl = ip6_dst_hoplimit(dst);
769
770 /* if the egress device isn't on the same HW e-switch, we use the uplink */
771 if (!switchdev_port_same_parent_id(priv->netdev, dst->dev))
772 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
773 else
774 *out_dev = dst->dev;
775 #else
776 return -EOPNOTSUPP;
777 #endif
778
779 n = dst_neigh_lookup(dst, &fl6->daddr);
780 dst_release(dst);
781 if (!n)
782 return -ENOMEM;
783
784 *out_n = n;
785 return 0;
786 }
787
788 static int gen_vxlan_header_ipv4(struct net_device *out_dev,
789 char buf[],
790 unsigned char h_dest[ETH_ALEN],
791 int ttl,
792 __be32 daddr,
793 __be32 saddr,
794 __be16 udp_dst_port,
795 __be32 vx_vni)
796 {
797 int encap_size = VXLAN_HLEN + sizeof(struct iphdr) + ETH_HLEN;
798 struct ethhdr *eth = (struct ethhdr *)buf;
799 struct iphdr *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
800 struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
801 struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
802
803 memset(buf, 0, encap_size);
804
805 ether_addr_copy(eth->h_dest, h_dest);
806 ether_addr_copy(eth->h_source, out_dev->dev_addr);
807 eth->h_proto = htons(ETH_P_IP);
808
809 ip->daddr = daddr;
810 ip->saddr = saddr;
811
812 ip->ttl = ttl;
813 ip->protocol = IPPROTO_UDP;
814 ip->version = 0x4;
815 ip->ihl = 0x5;
816
817 udp->dest = udp_dst_port;
818 vxh->vx_flags = VXLAN_HF_VNI;
819 vxh->vx_vni = vxlan_vni_field(vx_vni);
820
821 return encap_size;
822 }
823
824 static int gen_vxlan_header_ipv6(struct net_device *out_dev,
825 char buf[],
826 unsigned char h_dest[ETH_ALEN],
827 int ttl,
828 struct in6_addr *daddr,
829 struct in6_addr *saddr,
830 __be16 udp_dst_port,
831 __be32 vx_vni)
832 {
833 int encap_size = VXLAN_HLEN + sizeof(struct ipv6hdr) + ETH_HLEN;
834 struct ethhdr *eth = (struct ethhdr *)buf;
835 struct ipv6hdr *ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr));
836 struct udphdr *udp = (struct udphdr *)((char *)ip6h + sizeof(struct ipv6hdr));
837 struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
838
839 memset(buf, 0, encap_size);
840
841 ether_addr_copy(eth->h_dest, h_dest);
842 ether_addr_copy(eth->h_source, out_dev->dev_addr);
843 eth->h_proto = htons(ETH_P_IPV6);
844
845 ip6_flow_hdr(ip6h, 0, 0);
846 /* the HW fills up ipv6 payload len */
847 ip6h->nexthdr = IPPROTO_UDP;
848 ip6h->hop_limit = ttl;
849 ip6h->daddr = *daddr;
850 ip6h->saddr = *saddr;
851
852 udp->dest = udp_dst_port;
853 vxh->vx_flags = VXLAN_HF_VNI;
854 vxh->vx_vni = vxlan_vni_field(vx_vni);
855
856 return encap_size;
857 }
858
859 static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
860 struct net_device *mirred_dev,
861 struct mlx5_encap_entry *e,
862 struct net_device **out_dev)
863 {
864 int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
865 struct ip_tunnel_key *tun_key = &e->tun_info.key;
866 int encap_size, ttl, err;
867 struct neighbour *n = NULL;
868 struct flowi4 fl4 = {};
869 char *encap_header;
870
871 encap_header = kzalloc(max_encap_size, GFP_KERNEL);
872 if (!encap_header)
873 return -ENOMEM;
874
875 switch (e->tunnel_type) {
876 case MLX5_HEADER_TYPE_VXLAN:
877 fl4.flowi4_proto = IPPROTO_UDP;
878 fl4.fl4_dport = tun_key->tp_dst;
879 break;
880 default:
881 err = -EOPNOTSUPP;
882 goto out;
883 }
884 fl4.flowi4_tos = tun_key->tos;
885 fl4.daddr = tun_key->u.ipv4.dst;
886 fl4.saddr = tun_key->u.ipv4.src;
887
888 err = mlx5e_route_lookup_ipv4(priv, mirred_dev, out_dev,
889 &fl4, &n, &ttl);
890 if (err)
891 goto out;
892
893 if (!(n->nud_state & NUD_VALID)) {
894 pr_warn("%s: can't offload, neighbour to %pI4 invalid\n", __func__, &fl4.daddr);
895 err = -EOPNOTSUPP;
896 goto out;
897 }
898
899 e->n = n;
900 e->out_dev = *out_dev;
901
902 neigh_ha_snapshot(e->h_dest, n, *out_dev);
903
904 switch (e->tunnel_type) {
905 case MLX5_HEADER_TYPE_VXLAN:
906 encap_size = gen_vxlan_header_ipv4(*out_dev, encap_header,
907 e->h_dest, ttl,
908 fl4.daddr,
909 fl4.saddr, tun_key->tp_dst,
910 tunnel_id_to_key32(tun_key->tun_id));
911 break;
912 default:
913 err = -EOPNOTSUPP;
914 goto out;
915 }
916
917 err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
918 encap_size, encap_header, &e->encap_id);
919 out:
920 if (err && n)
921 neigh_release(n);
922 kfree(encap_header);
923 return err;
924 }
925
926 static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
927 struct net_device *mirred_dev,
928 struct mlx5_encap_entry *e,
929 struct net_device **out_dev)
930
931 {
932 int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
933 struct ip_tunnel_key *tun_key = &e->tun_info.key;
934 int encap_size, err, ttl = 0;
935 struct neighbour *n = NULL;
936 struct flowi6 fl6 = {};
937 char *encap_header;
938
939 encap_header = kzalloc(max_encap_size, GFP_KERNEL);
940 if (!encap_header)
941 return -ENOMEM;
942
943 switch (e->tunnel_type) {
944 case MLX5_HEADER_TYPE_VXLAN:
945 fl6.flowi6_proto = IPPROTO_UDP;
946 fl6.fl6_dport = tun_key->tp_dst;
947 break;
948 default:
949 err = -EOPNOTSUPP;
950 goto out;
951 }
952
953 fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label);
954 fl6.daddr = tun_key->u.ipv6.dst;
955 fl6.saddr = tun_key->u.ipv6.src;
956
957 err = mlx5e_route_lookup_ipv6(priv, mirred_dev, out_dev,
958 &fl6, &n, &ttl);
959 if (err)
960 goto out;
961
962 if (!(n->nud_state & NUD_VALID)) {
963 pr_warn("%s: can't offload, neighbour to %pI6 invalid\n", __func__, &fl6.daddr);
964 err = -EOPNOTSUPP;
965 goto out;
966 }
967
968 e->n = n;
969 e->out_dev = *out_dev;
970
971 neigh_ha_snapshot(e->h_dest, n, *out_dev);
972
973 switch (e->tunnel_type) {
974 case MLX5_HEADER_TYPE_VXLAN:
975 encap_size = gen_vxlan_header_ipv6(*out_dev, encap_header,
976 e->h_dest, ttl,
977 &fl6.daddr,
978 &fl6.saddr, tun_key->tp_dst,
979 tunnel_id_to_key32(tun_key->tun_id));
980 break;
981 default:
982 err = -EOPNOTSUPP;
983 goto out;
984 }
985
986 err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
987 encap_size, encap_header, &e->encap_id);
988 out:
989 if (err && n)
990 neigh_release(n);
991 kfree(encap_header);
992 return err;
993 }
994
995 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
996 struct ip_tunnel_info *tun_info,
997 struct net_device *mirred_dev,
998 struct mlx5_esw_flow_attr *attr)
999 {
1000 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1001 struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw);
1002 struct mlx5e_priv *up_priv = netdev_priv(up_dev);
1003 unsigned short family = ip_tunnel_info_af(tun_info);
1004 struct ip_tunnel_key *key = &tun_info->key;
1005 struct mlx5_encap_entry *e;
1006 struct net_device *out_dev;
1007 int tunnel_type, err = -EOPNOTSUPP;
1008 uintptr_t hash_key;
1009 bool found = false;
1010
1011 /* udp dst port must be set */
1012 if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
1013 goto vxlan_encap_offload_err;
1014
1015 /* setting udp src port isn't supported */
1016 if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
1017 vxlan_encap_offload_err:
1018 netdev_warn(priv->netdev,
1019 "must set udp dst port and not set udp src port\n");
1020 return -EOPNOTSUPP;
1021 }
1022
1023 if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->tp_dst)) &&
1024 MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
1025 tunnel_type = MLX5_HEADER_TYPE_VXLAN;
1026 } else {
1027 netdev_warn(priv->netdev,
1028 "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
1029 return -EOPNOTSUPP;
1030 }
1031
1032 hash_key = hash_encap_info(key);
1033
1034 hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
1035 encap_hlist, hash_key) {
1036 if (!cmp_encap_info(&e->tun_info.key, key)) {
1037 found = true;
1038 break;
1039 }
1040 }
1041
1042 if (found) {
1043 attr->encap = e;
1044 return 0;
1045 }
1046
1047 e = kzalloc(sizeof(*e), GFP_KERNEL);
1048 if (!e)
1049 return -ENOMEM;
1050
1051 e->tun_info = *tun_info;
1052 e->tunnel_type = tunnel_type;
1053 INIT_LIST_HEAD(&e->flows);
1054
1055 if (family == AF_INET)
1056 err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e, &out_dev);
1057 else if (family == AF_INET6)
1058 err = mlx5e_create_encap_header_ipv6(priv, mirred_dev, e, &out_dev);
1059
1060 if (err)
1061 goto out_err;
1062
1063 attr->encap = e;
1064 hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
1065
1066 return err;
1067
1068 out_err:
1069 kfree(e);
1070 return err;
1071 }
1072
1073 static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1074 struct mlx5e_tc_flow *flow)
1075 {
1076 struct mlx5_esw_flow_attr *attr = flow->attr;
1077 struct ip_tunnel_info *info = NULL;
1078 const struct tc_action *a;
1079 LIST_HEAD(actions);
1080 bool encap = false;
1081 int err;
1082
1083 if (tc_no_actions(exts))
1084 return -EINVAL;
1085
1086 memset(attr, 0, sizeof(*attr));
1087 attr->in_rep = priv->ppriv;
1088
1089 tcf_exts_to_list(exts, &actions);
1090 list_for_each_entry(a, &actions, list) {
1091 if (is_tcf_gact_shot(a)) {
1092 attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
1093 MLX5_FLOW_CONTEXT_ACTION_COUNT;
1094 continue;
1095 }
1096
1097 if (is_tcf_mirred_egress_redirect(a)) {
1098 int ifindex = tcf_mirred_ifindex(a);
1099 struct net_device *out_dev;
1100 struct mlx5e_priv *out_priv;
1101
1102 out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
1103
1104 if (switchdev_port_same_parent_id(priv->netdev,
1105 out_dev)) {
1106 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1107 MLX5_FLOW_CONTEXT_ACTION_COUNT;
1108 out_priv = netdev_priv(out_dev);
1109 attr->out_rep = out_priv->ppriv;
1110 } else if (encap) {
1111 err = mlx5e_attach_encap(priv, info,
1112 out_dev, attr);
1113 if (err)
1114 return err;
1115 list_add(&flow->encap, &attr->encap->flows);
1116 attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
1117 MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1118 MLX5_FLOW_CONTEXT_ACTION_COUNT;
1119 out_priv = netdev_priv(attr->encap->out_dev);
1120 attr->out_rep = out_priv->ppriv;
1121 } else {
1122 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
1123 priv->netdev->name, out_dev->name);
1124 return -EINVAL;
1125 }
1126 continue;
1127 }
1128
1129 if (is_tcf_tunnel_set(a)) {
1130 info = tcf_tunnel_info(a);
1131 if (info)
1132 encap = true;
1133 else
1134 return -EOPNOTSUPP;
1135 continue;
1136 }
1137
1138 if (is_tcf_vlan(a)) {
1139 if (tcf_vlan_action(a) == TCA_VLAN_ACT_POP) {
1140 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
1141 } else if (tcf_vlan_action(a) == TCA_VLAN_ACT_PUSH) {
1142 if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
1143 return -EOPNOTSUPP;
1144
1145 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
1146 attr->vlan = tcf_vlan_push_vid(a);
1147 } else { /* action is TCA_VLAN_ACT_MODIFY */
1148 return -EOPNOTSUPP;
1149 }
1150 continue;
1151 }
1152
1153 if (is_tcf_tunnel_release(a)) {
1154 attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
1155 continue;
1156 }
1157
1158 return -EINVAL;
1159 }
1160 return 0;
1161 }
1162
1163 int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
1164 struct tc_cls_flower_offload *f)
1165 {
1166 struct mlx5e_tc_table *tc = &priv->fs.tc;
1167 int err, attr_size = 0;
1168 u32 flow_tag, action;
1169 struct mlx5e_tc_flow *flow;
1170 struct mlx5_flow_spec *spec;
1171 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1172 u8 flow_flags = 0;
1173
1174 if (esw && esw->mode == SRIOV_OFFLOADS) {
1175 flow_flags = MLX5E_TC_FLOW_ESWITCH;
1176 attr_size = sizeof(struct mlx5_esw_flow_attr);
1177 }
1178
1179 flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
1180 spec = mlx5_vzalloc(sizeof(*spec));
1181 if (!spec || !flow) {
1182 err = -ENOMEM;
1183 goto err_free;
1184 }
1185
1186 flow->cookie = f->cookie;
1187 flow->flags = flow_flags;
1188
1189 err = parse_cls_flower(priv, flow, spec, f);
1190 if (err < 0)
1191 goto err_free;
1192
1193 if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
1194 flow->attr = (struct mlx5_esw_flow_attr *)(flow + 1);
1195 err = parse_tc_fdb_actions(priv, f->exts, flow);
1196 if (err < 0)
1197 goto err_free;
1198 flow->rule = mlx5e_tc_add_fdb_flow(priv, spec, flow->attr);
1199 } else {
1200 err = parse_tc_nic_actions(priv, f->exts, &action, &flow_tag);
1201 if (err < 0)
1202 goto err_free;
1203 flow->rule = mlx5e_tc_add_nic_flow(priv, spec, action, flow_tag);
1204 }
1205
1206 if (IS_ERR(flow->rule)) {
1207 err = PTR_ERR(flow->rule);
1208 goto err_del_rule;
1209 }
1210
1211 err = rhashtable_insert_fast(&tc->ht, &flow->node,
1212 tc->ht_params);
1213 if (err)
1214 goto err_del_rule;
1215
1216 goto out;
1217
1218 err_del_rule:
1219 mlx5e_tc_del_flow(priv, flow);
1220
1221 err_free:
1222 kfree(flow);
1223 out:
1224 kvfree(spec);
1225 return err;
1226 }
1227
1228 int mlx5e_delete_flower(struct mlx5e_priv *priv,
1229 struct tc_cls_flower_offload *f)
1230 {
1231 struct mlx5e_tc_flow *flow;
1232 struct mlx5e_tc_table *tc = &priv->fs.tc;
1233
1234 flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1235 tc->ht_params);
1236 if (!flow)
1237 return -EINVAL;
1238
1239 rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
1240
1241 mlx5e_tc_del_flow(priv, flow);
1242
1243
1244 kfree(flow);
1245
1246 return 0;
1247 }
1248
1249 int mlx5e_stats_flower(struct mlx5e_priv *priv,
1250 struct tc_cls_flower_offload *f)
1251 {
1252 struct mlx5e_tc_table *tc = &priv->fs.tc;
1253 struct mlx5e_tc_flow *flow;
1254 struct tc_action *a;
1255 struct mlx5_fc *counter;
1256 LIST_HEAD(actions);
1257 u64 bytes;
1258 u64 packets;
1259 u64 lastuse;
1260
1261 flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1262 tc->ht_params);
1263 if (!flow)
1264 return -EINVAL;
1265
1266 counter = mlx5_flow_rule_counter(flow->rule);
1267 if (!counter)
1268 return 0;
1269
1270 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
1271
1272 preempt_disable();
1273
1274 tcf_exts_to_list(f->exts, &actions);
1275 list_for_each_entry(a, &actions, list)
1276 tcf_action_stats_update(a, bytes, packets, lastuse);
1277
1278 preempt_enable();
1279
1280 return 0;
1281 }
1282
1283 static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
1284 .head_offset = offsetof(struct mlx5e_tc_flow, node),
1285 .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
1286 .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
1287 .automatic_shrinking = true,
1288 };
1289
1290 int mlx5e_tc_init(struct mlx5e_priv *priv)
1291 {
1292 struct mlx5e_tc_table *tc = &priv->fs.tc;
1293
1294 tc->ht_params = mlx5e_tc_flow_ht_params;
1295 return rhashtable_init(&tc->ht, &tc->ht_params);
1296 }
1297
1298 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
1299 {
1300 struct mlx5e_tc_flow *flow = ptr;
1301 struct mlx5e_priv *priv = arg;
1302
1303 mlx5e_tc_del_flow(priv, flow);
1304 kfree(flow);
1305 }
1306
1307 void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
1308 {
1309 struct mlx5e_tc_table *tc = &priv->fs.tc;
1310
1311 rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
1312
1313 if (!IS_ERR_OR_NULL(tc->t)) {
1314 mlx5_destroy_flow_table(tc->t);
1315 tc->t = NULL;
1316 }
1317 }
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