0318d6f6e1da7a9ac99639245f672d12a148a153
[sfrench/cifs-2.6.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/tc_act/tc_pedit.h>
46 #include <net/tc_act/tc_csum.h>
47 #include <net/vxlan.h>
48 #include <net/arp.h>
49 #include "en.h"
50 #include "en_rep.h"
51 #include "en_tc.h"
52 #include "eswitch.h"
53 #include "vxlan.h"
54
55 struct mlx5_nic_flow_attr {
56         u32 action;
57         u32 flow_tag;
58         u32 mod_hdr_id;
59 };
60
61 enum {
62         MLX5E_TC_FLOW_ESWITCH   = BIT(0),
63         MLX5E_TC_FLOW_NIC       = BIT(1),
64         MLX5E_TC_FLOW_OFFLOADED = BIT(2),
65 };
66
67 struct mlx5e_tc_flow {
68         struct rhash_head       node;
69         u64                     cookie;
70         u8                      flags;
71         struct mlx5_flow_handle *rule;
72         struct list_head        encap;   /* flows sharing the same encap ID */
73         struct list_head        mod_hdr; /* flows sharing the same mod hdr ID */
74         union {
75                 struct mlx5_esw_flow_attr esw_attr[0];
76                 struct mlx5_nic_flow_attr nic_attr[0];
77         };
78 };
79
80 struct mlx5e_tc_flow_parse_attr {
81         struct mlx5_flow_spec spec;
82         int num_mod_hdr_actions;
83         void *mod_hdr_actions;
84 };
85
86 enum {
87         MLX5_HEADER_TYPE_VXLAN = 0x0,
88         MLX5_HEADER_TYPE_NVGRE = 0x1,
89 };
90
91 #define MLX5E_TC_TABLE_NUM_ENTRIES 1024
92 #define MLX5E_TC_TABLE_NUM_GROUPS 4
93
94 struct mod_hdr_key {
95         int num_actions;
96         void *actions;
97 };
98
99 struct mlx5e_mod_hdr_entry {
100         /* a node of a hash table which keeps all the mod_hdr entries */
101         struct hlist_node mod_hdr_hlist;
102
103         /* flows sharing the same mod_hdr entry */
104         struct list_head flows;
105
106         struct mod_hdr_key key;
107
108         u32 mod_hdr_id;
109 };
110
111 #define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto)
112
113 static inline u32 hash_mod_hdr_info(struct mod_hdr_key *key)
114 {
115         return jhash(key->actions,
116                      key->num_actions * MLX5_MH_ACT_SZ, 0);
117 }
118
119 static inline int cmp_mod_hdr_info(struct mod_hdr_key *a,
120                                    struct mod_hdr_key *b)
121 {
122         if (a->num_actions != b->num_actions)
123                 return 1;
124
125         return memcmp(a->actions, b->actions, a->num_actions * MLX5_MH_ACT_SZ);
126 }
127
128 static int mlx5e_attach_mod_hdr(struct mlx5e_priv *priv,
129                                 struct mlx5e_tc_flow *flow,
130                                 struct mlx5e_tc_flow_parse_attr *parse_attr)
131 {
132         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
133         int num_actions, actions_size, namespace, err;
134         struct mlx5e_mod_hdr_entry *mh;
135         struct mod_hdr_key key;
136         bool found = false;
137         u32 hash_key;
138
139         num_actions  = parse_attr->num_mod_hdr_actions;
140         actions_size = MLX5_MH_ACT_SZ * num_actions;
141
142         key.actions = parse_attr->mod_hdr_actions;
143         key.num_actions = num_actions;
144
145         hash_key = hash_mod_hdr_info(&key);
146
147         if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
148                 namespace = MLX5_FLOW_NAMESPACE_FDB;
149                 hash_for_each_possible(esw->offloads.mod_hdr_tbl, mh,
150                                        mod_hdr_hlist, hash_key) {
151                         if (!cmp_mod_hdr_info(&mh->key, &key)) {
152                                 found = true;
153                                 break;
154                         }
155                 }
156         } else {
157                 namespace = MLX5_FLOW_NAMESPACE_KERNEL;
158                 hash_for_each_possible(priv->fs.tc.mod_hdr_tbl, mh,
159                                        mod_hdr_hlist, hash_key) {
160                         if (!cmp_mod_hdr_info(&mh->key, &key)) {
161                                 found = true;
162                                 break;
163                         }
164                 }
165         }
166
167         if (found)
168                 goto attach_flow;
169
170         mh = kzalloc(sizeof(*mh) + actions_size, GFP_KERNEL);
171         if (!mh)
172                 return -ENOMEM;
173
174         mh->key.actions = (void *)mh + sizeof(*mh);
175         memcpy(mh->key.actions, key.actions, actions_size);
176         mh->key.num_actions = num_actions;
177         INIT_LIST_HEAD(&mh->flows);
178
179         err = mlx5_modify_header_alloc(priv->mdev, namespace,
180                                        mh->key.num_actions,
181                                        mh->key.actions,
182                                        &mh->mod_hdr_id);
183         if (err)
184                 goto out_err;
185
186         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
187                 hash_add(esw->offloads.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key);
188         else
189                 hash_add(priv->fs.tc.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key);
190
191 attach_flow:
192         list_add(&flow->mod_hdr, &mh->flows);
193         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
194                 flow->esw_attr->mod_hdr_id = mh->mod_hdr_id;
195         else
196                 flow->nic_attr->mod_hdr_id = mh->mod_hdr_id;
197
198         return 0;
199
200 out_err:
201         kfree(mh);
202         return err;
203 }
204
205 static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv,
206                                  struct mlx5e_tc_flow *flow)
207 {
208         struct list_head *next = flow->mod_hdr.next;
209
210         list_del(&flow->mod_hdr);
211
212         if (list_empty(next)) {
213                 struct mlx5e_mod_hdr_entry *mh;
214
215                 mh = list_entry(next, struct mlx5e_mod_hdr_entry, flows);
216
217                 mlx5_modify_header_dealloc(priv->mdev, mh->mod_hdr_id);
218                 hash_del(&mh->mod_hdr_hlist);
219                 kfree(mh);
220         }
221 }
222
223 static struct mlx5_flow_handle *
224 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
225                       struct mlx5e_tc_flow_parse_attr *parse_attr,
226                       struct mlx5e_tc_flow *flow)
227 {
228         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
229         struct mlx5_core_dev *dev = priv->mdev;
230         struct mlx5_flow_destination dest = {};
231         struct mlx5_flow_act flow_act = {
232                 .action = attr->action,
233                 .flow_tag = attr->flow_tag,
234                 .encap_id = 0,
235         };
236         struct mlx5_fc *counter = NULL;
237         struct mlx5_flow_handle *rule;
238         bool table_created = false;
239         int err;
240
241         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
242                 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
243                 dest.ft = priv->fs.vlan.ft.t;
244         } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
245                 counter = mlx5_fc_create(dev, true);
246                 if (IS_ERR(counter))
247                         return ERR_CAST(counter);
248
249                 dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
250                 dest.counter = counter;
251         }
252
253         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
254                 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
255                 flow_act.modify_id = attr->mod_hdr_id;
256                 kfree(parse_attr->mod_hdr_actions);
257                 if (err) {
258                         rule = ERR_PTR(err);
259                         goto err_create_mod_hdr_id;
260                 }
261         }
262
263         if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
264                 priv->fs.tc.t =
265                         mlx5_create_auto_grouped_flow_table(priv->fs.ns,
266                                                             MLX5E_TC_PRIO,
267                                                             MLX5E_TC_TABLE_NUM_ENTRIES,
268                                                             MLX5E_TC_TABLE_NUM_GROUPS,
269                                                             0, 0);
270                 if (IS_ERR(priv->fs.tc.t)) {
271                         netdev_err(priv->netdev,
272                                    "Failed to create tc offload table\n");
273                         rule = ERR_CAST(priv->fs.tc.t);
274                         goto err_create_ft;
275                 }
276
277                 table_created = true;
278         }
279
280         parse_attr->spec.match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
281         rule = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec,
282                                    &flow_act, &dest, 1);
283
284         if (IS_ERR(rule))
285                 goto err_add_rule;
286
287         return rule;
288
289 err_add_rule:
290         if (table_created) {
291                 mlx5_destroy_flow_table(priv->fs.tc.t);
292                 priv->fs.tc.t = NULL;
293         }
294 err_create_ft:
295         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
296                 mlx5e_detach_mod_hdr(priv, flow);
297 err_create_mod_hdr_id:
298         mlx5_fc_destroy(dev, counter);
299
300         return rule;
301 }
302
303 static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
304                                   struct mlx5e_tc_flow *flow)
305 {
306         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
307         struct mlx5_fc *counter = NULL;
308
309         counter = mlx5_flow_rule_counter(flow->rule);
310         mlx5_del_flow_rules(flow->rule);
311         mlx5_fc_destroy(priv->mdev, counter);
312
313         if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
314                 mlx5_destroy_flow_table(priv->fs.tc.t);
315                 priv->fs.tc.t = NULL;
316         }
317
318         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
319                 mlx5e_detach_mod_hdr(priv, flow);
320 }
321
322 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
323                                struct mlx5e_tc_flow *flow);
324
325 static struct mlx5_flow_handle *
326 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
327                       struct mlx5e_tc_flow_parse_attr *parse_attr,
328                       struct mlx5e_tc_flow *flow)
329 {
330         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
331         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
332         struct mlx5_flow_handle *rule;
333         int err;
334
335         err = mlx5_eswitch_add_vlan_action(esw, attr);
336         if (err) {
337                 rule = ERR_PTR(err);
338                 goto err_add_vlan;
339         }
340
341         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
342                 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
343                 kfree(parse_attr->mod_hdr_actions);
344                 if (err) {
345                         rule = ERR_PTR(err);
346                         goto err_mod_hdr;
347                 }
348         }
349
350         rule = mlx5_eswitch_add_offloaded_rule(esw, &parse_attr->spec, attr);
351         if (IS_ERR(rule))
352                 goto err_add_rule;
353
354         return rule;
355
356 err_add_rule:
357         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
358                 mlx5e_detach_mod_hdr(priv, flow);
359 err_mod_hdr:
360         mlx5_eswitch_del_vlan_action(esw, attr);
361 err_add_vlan:
362         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
363                 mlx5e_detach_encap(priv, flow);
364         return rule;
365 }
366
367 static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
368                                   struct mlx5e_tc_flow *flow)
369 {
370         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
371         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
372
373         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
374                 flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
375                 mlx5_eswitch_del_offloaded_rule(esw, flow->rule, attr);
376         }
377
378         mlx5_eswitch_del_vlan_action(esw, attr);
379
380         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP) {
381                 mlx5e_detach_encap(priv, flow);
382                 kvfree(attr->parse_attr);
383         }
384
385         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
386                 mlx5e_detach_mod_hdr(priv, flow);
387 }
388
389 void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
390                               struct mlx5e_encap_entry *e)
391 {
392         struct mlx5e_tc_flow *flow;
393         int err;
394
395         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
396                                e->encap_size, e->encap_header,
397                                &e->encap_id);
398         if (err) {
399                 mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %d\n",
400                                err);
401                 return;
402         }
403         e->flags |= MLX5_ENCAP_ENTRY_VALID;
404         mlx5e_rep_queue_neigh_stats_work(priv);
405
406         list_for_each_entry(flow, &e->flows, encap) {
407                 flow->esw_attr->encap_id = e->encap_id;
408                 flow->rule = mlx5e_tc_add_fdb_flow(priv,
409                                                    flow->esw_attr->parse_attr,
410                                                    flow);
411                 if (IS_ERR(flow->rule)) {
412                         err = PTR_ERR(flow->rule);
413                         mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n",
414                                        err);
415                         continue;
416                 }
417                 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
418         }
419 }
420
421 void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
422                               struct mlx5e_encap_entry *e)
423 {
424         struct mlx5e_tc_flow *flow;
425         struct mlx5_fc *counter;
426
427         list_for_each_entry(flow, &e->flows, encap) {
428                 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
429                         flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
430                         counter = mlx5_flow_rule_counter(flow->rule);
431                         mlx5_del_flow_rules(flow->rule);
432                         mlx5_fc_destroy(priv->mdev, counter);
433                 }
434         }
435
436         if (e->flags & MLX5_ENCAP_ENTRY_VALID) {
437                 e->flags &= ~MLX5_ENCAP_ENTRY_VALID;
438                 mlx5_encap_dealloc(priv->mdev, e->encap_id);
439         }
440 }
441
442 void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
443 {
444         struct mlx5e_neigh *m_neigh = &nhe->m_neigh;
445         u64 bytes, packets, lastuse = 0;
446         struct mlx5e_tc_flow *flow;
447         struct mlx5e_encap_entry *e;
448         struct mlx5_fc *counter;
449         struct neigh_table *tbl;
450         bool neigh_used = false;
451         struct neighbour *n;
452
453         if (m_neigh->family == AF_INET)
454                 tbl = &arp_tbl;
455 #if IS_ENABLED(CONFIG_IPV6)
456         else if (m_neigh->family == AF_INET6)
457                 tbl = ipv6_stub->nd_tbl;
458 #endif
459         else
460                 return;
461
462         list_for_each_entry(e, &nhe->encap_list, encap_list) {
463                 if (!(e->flags & MLX5_ENCAP_ENTRY_VALID))
464                         continue;
465                 list_for_each_entry(flow, &e->flows, encap) {
466                         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
467                                 counter = mlx5_flow_rule_counter(flow->rule);
468                                 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
469                                 if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) {
470                                         neigh_used = true;
471                                         break;
472                                 }
473                         }
474                 }
475         }
476
477         if (neigh_used) {
478                 nhe->reported_lastuse = jiffies;
479
480                 /* find the relevant neigh according to the cached device and
481                  * dst ip pair
482                  */
483                 n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev);
484                 if (!n) {
485                         WARN(1, "The neighbour already freed\n");
486                         return;
487                 }
488
489                 neigh_event_send(n, NULL);
490                 neigh_release(n);
491         }
492 }
493
494 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
495                                struct mlx5e_tc_flow *flow)
496 {
497         struct list_head *next = flow->encap.next;
498
499         list_del(&flow->encap);
500         if (list_empty(next)) {
501                 struct mlx5e_encap_entry *e;
502
503                 e = list_entry(next, struct mlx5e_encap_entry, flows);
504                 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
505
506                 if (e->flags & MLX5_ENCAP_ENTRY_VALID)
507                         mlx5_encap_dealloc(priv->mdev, e->encap_id);
508
509                 hash_del_rcu(&e->encap_hlist);
510                 kfree(e->encap_header);
511                 kfree(e);
512         }
513 }
514
515 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
516                               struct mlx5e_tc_flow *flow)
517 {
518         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
519                 mlx5e_tc_del_fdb_flow(priv, flow);
520         else
521                 mlx5e_tc_del_nic_flow(priv, flow);
522 }
523
524 static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
525                              struct tc_cls_flower_offload *f)
526 {
527         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
528                                        outer_headers);
529         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
530                                        outer_headers);
531         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
532                                     misc_parameters);
533         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
534                                     misc_parameters);
535
536         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
537         MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
538
539         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
540                 struct flow_dissector_key_keyid *key =
541                         skb_flow_dissector_target(f->dissector,
542                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
543                                                   f->key);
544                 struct flow_dissector_key_keyid *mask =
545                         skb_flow_dissector_target(f->dissector,
546                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
547                                                   f->mask);
548                 MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
549                          be32_to_cpu(mask->keyid));
550                 MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
551                          be32_to_cpu(key->keyid));
552         }
553 }
554
555 static int parse_tunnel_attr(struct mlx5e_priv *priv,
556                              struct mlx5_flow_spec *spec,
557                              struct tc_cls_flower_offload *f)
558 {
559         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
560                                        outer_headers);
561         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
562                                        outer_headers);
563
564         struct flow_dissector_key_control *enc_control =
565                 skb_flow_dissector_target(f->dissector,
566                                           FLOW_DISSECTOR_KEY_ENC_CONTROL,
567                                           f->key);
568
569         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
570                 struct flow_dissector_key_ports *key =
571                         skb_flow_dissector_target(f->dissector,
572                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
573                                                   f->key);
574                 struct flow_dissector_key_ports *mask =
575                         skb_flow_dissector_target(f->dissector,
576                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
577                                                   f->mask);
578                 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
579                 struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw);
580                 struct mlx5e_priv *up_priv = netdev_priv(up_dev);
581
582                 /* Full udp dst port must be given */
583                 if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
584                         goto vxlan_match_offload_err;
585
586                 if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->dst)) &&
587                     MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
588                         parse_vxlan_attr(spec, f);
589                 else {
590                         netdev_warn(priv->netdev,
591                                     "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
592                         return -EOPNOTSUPP;
593                 }
594
595                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
596                          udp_dport, ntohs(mask->dst));
597                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
598                          udp_dport, ntohs(key->dst));
599
600                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
601                          udp_sport, ntohs(mask->src));
602                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
603                          udp_sport, ntohs(key->src));
604         } else { /* udp dst port must be given */
605 vxlan_match_offload_err:
606                 netdev_warn(priv->netdev,
607                             "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
608                 return -EOPNOTSUPP;
609         }
610
611         if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
612                 struct flow_dissector_key_ipv4_addrs *key =
613                         skb_flow_dissector_target(f->dissector,
614                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
615                                                   f->key);
616                 struct flow_dissector_key_ipv4_addrs *mask =
617                         skb_flow_dissector_target(f->dissector,
618                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
619                                                   f->mask);
620                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
621                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
622                          ntohl(mask->src));
623                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
624                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
625                          ntohl(key->src));
626
627                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
628                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
629                          ntohl(mask->dst));
630                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
631                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
632                          ntohl(key->dst));
633
634                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
635                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
636         } else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
637                 struct flow_dissector_key_ipv6_addrs *key =
638                         skb_flow_dissector_target(f->dissector,
639                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
640                                                   f->key);
641                 struct flow_dissector_key_ipv6_addrs *mask =
642                         skb_flow_dissector_target(f->dissector,
643                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
644                                                   f->mask);
645
646                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
647                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
648                        &mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
649                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
650                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
651                        &key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
652
653                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
654                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
655                        &mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
656                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
657                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
658                        &key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
659
660                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
661                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6);
662         }
663
664         /* Enforce DMAC when offloading incoming tunneled flows.
665          * Flow counters require a match on the DMAC.
666          */
667         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
668         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
669         ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
670                                      dmac_47_16), priv->netdev->dev_addr);
671
672         /* let software handle IP fragments */
673         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
674         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
675
676         return 0;
677 }
678
679 static int __parse_cls_flower(struct mlx5e_priv *priv,
680                               struct mlx5_flow_spec *spec,
681                               struct tc_cls_flower_offload *f,
682                               u8 *min_inline)
683 {
684         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
685                                        outer_headers);
686         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
687                                        outer_headers);
688         u16 addr_type = 0;
689         u8 ip_proto = 0;
690
691         *min_inline = MLX5_INLINE_MODE_L2;
692
693         if (f->dissector->used_keys &
694             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
695               BIT(FLOW_DISSECTOR_KEY_BASIC) |
696               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
697               BIT(FLOW_DISSECTOR_KEY_VLAN) |
698               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
699               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
700               BIT(FLOW_DISSECTOR_KEY_PORTS) |
701               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
702               BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
703               BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
704               BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
705               BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
706               BIT(FLOW_DISSECTOR_KEY_TCP) |
707               BIT(FLOW_DISSECTOR_KEY_IP))) {
708                 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
709                             f->dissector->used_keys);
710                 return -EOPNOTSUPP;
711         }
712
713         if ((dissector_uses_key(f->dissector,
714                                 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
715              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
716              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
717             dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
718                 struct flow_dissector_key_control *key =
719                         skb_flow_dissector_target(f->dissector,
720                                                   FLOW_DISSECTOR_KEY_ENC_CONTROL,
721                                                   f->key);
722                 switch (key->addr_type) {
723                 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
724                 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
725                         if (parse_tunnel_attr(priv, spec, f))
726                                 return -EOPNOTSUPP;
727                         break;
728                 default:
729                         return -EOPNOTSUPP;
730                 }
731
732                 /* In decap flow, header pointers should point to the inner
733                  * headers, outer header were already set by parse_tunnel_attr
734                  */
735                 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
736                                          inner_headers);
737                 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
738                                          inner_headers);
739         }
740
741         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
742                 struct flow_dissector_key_control *key =
743                         skb_flow_dissector_target(f->dissector,
744                                                   FLOW_DISSECTOR_KEY_CONTROL,
745                                                   f->key);
746
747                 struct flow_dissector_key_control *mask =
748                         skb_flow_dissector_target(f->dissector,
749                                                   FLOW_DISSECTOR_KEY_CONTROL,
750                                                   f->mask);
751                 addr_type = key->addr_type;
752
753                 if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
754                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
755                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
756                                  key->flags & FLOW_DIS_IS_FRAGMENT);
757
758                         /* the HW doesn't need L3 inline to match on frag=no */
759                         if (key->flags & FLOW_DIS_IS_FRAGMENT)
760                                 *min_inline = MLX5_INLINE_MODE_IP;
761                 }
762         }
763
764         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
765                 struct flow_dissector_key_basic *key =
766                         skb_flow_dissector_target(f->dissector,
767                                                   FLOW_DISSECTOR_KEY_BASIC,
768                                                   f->key);
769                 struct flow_dissector_key_basic *mask =
770                         skb_flow_dissector_target(f->dissector,
771                                                   FLOW_DISSECTOR_KEY_BASIC,
772                                                   f->mask);
773                 ip_proto = key->ip_proto;
774
775                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
776                          ntohs(mask->n_proto));
777                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
778                          ntohs(key->n_proto));
779
780                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
781                          mask->ip_proto);
782                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
783                          key->ip_proto);
784
785                 if (mask->ip_proto)
786                         *min_inline = MLX5_INLINE_MODE_IP;
787         }
788
789         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
790                 struct flow_dissector_key_eth_addrs *key =
791                         skb_flow_dissector_target(f->dissector,
792                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
793                                                   f->key);
794                 struct flow_dissector_key_eth_addrs *mask =
795                         skb_flow_dissector_target(f->dissector,
796                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
797                                                   f->mask);
798
799                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
800                                              dmac_47_16),
801                                 mask->dst);
802                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
803                                              dmac_47_16),
804                                 key->dst);
805
806                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
807                                              smac_47_16),
808                                 mask->src);
809                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
810                                              smac_47_16),
811                                 key->src);
812         }
813
814         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
815                 struct flow_dissector_key_vlan *key =
816                         skb_flow_dissector_target(f->dissector,
817                                                   FLOW_DISSECTOR_KEY_VLAN,
818                                                   f->key);
819                 struct flow_dissector_key_vlan *mask =
820                         skb_flow_dissector_target(f->dissector,
821                                                   FLOW_DISSECTOR_KEY_VLAN,
822                                                   f->mask);
823                 if (mask->vlan_id || mask->vlan_priority) {
824                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
825                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1);
826
827                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
828                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
829
830                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
831                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
832                 }
833         }
834
835         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
836                 struct flow_dissector_key_ipv4_addrs *key =
837                         skb_flow_dissector_target(f->dissector,
838                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
839                                                   f->key);
840                 struct flow_dissector_key_ipv4_addrs *mask =
841                         skb_flow_dissector_target(f->dissector,
842                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
843                                                   f->mask);
844
845                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
846                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
847                        &mask->src, sizeof(mask->src));
848                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
849                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
850                        &key->src, sizeof(key->src));
851                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
852                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
853                        &mask->dst, sizeof(mask->dst));
854                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
855                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
856                        &key->dst, sizeof(key->dst));
857
858                 if (mask->src || mask->dst)
859                         *min_inline = MLX5_INLINE_MODE_IP;
860         }
861
862         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
863                 struct flow_dissector_key_ipv6_addrs *key =
864                         skb_flow_dissector_target(f->dissector,
865                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
866                                                   f->key);
867                 struct flow_dissector_key_ipv6_addrs *mask =
868                         skb_flow_dissector_target(f->dissector,
869                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
870                                                   f->mask);
871
872                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
873                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
874                        &mask->src, sizeof(mask->src));
875                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
876                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
877                        &key->src, sizeof(key->src));
878
879                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
880                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
881                        &mask->dst, sizeof(mask->dst));
882                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
883                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
884                        &key->dst, sizeof(key->dst));
885
886                 if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
887                     ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
888                         *min_inline = MLX5_INLINE_MODE_IP;
889         }
890
891         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_IP)) {
892                 struct flow_dissector_key_ip *key =
893                         skb_flow_dissector_target(f->dissector,
894                                                   FLOW_DISSECTOR_KEY_IP,
895                                                   f->key);
896                 struct flow_dissector_key_ip *mask =
897                         skb_flow_dissector_target(f->dissector,
898                                                   FLOW_DISSECTOR_KEY_IP,
899                                                   f->mask);
900
901                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, mask->tos & 0x3);
902                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, key->tos & 0x3);
903
904                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, mask->tos >> 2);
905                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, key->tos  >> 2);
906
907                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, mask->ttl);
908                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, key->ttl);
909
910                 if (mask->ttl &&
911                     !MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
912                                                 ft_field_support.outer_ipv4_ttl))
913                         return -EOPNOTSUPP;
914
915                 if (mask->tos || mask->ttl)
916                         *min_inline = MLX5_INLINE_MODE_IP;
917         }
918
919         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
920                 struct flow_dissector_key_ports *key =
921                         skb_flow_dissector_target(f->dissector,
922                                                   FLOW_DISSECTOR_KEY_PORTS,
923                                                   f->key);
924                 struct flow_dissector_key_ports *mask =
925                         skb_flow_dissector_target(f->dissector,
926                                                   FLOW_DISSECTOR_KEY_PORTS,
927                                                   f->mask);
928                 switch (ip_proto) {
929                 case IPPROTO_TCP:
930                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
931                                  tcp_sport, ntohs(mask->src));
932                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
933                                  tcp_sport, ntohs(key->src));
934
935                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
936                                  tcp_dport, ntohs(mask->dst));
937                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
938                                  tcp_dport, ntohs(key->dst));
939                         break;
940
941                 case IPPROTO_UDP:
942                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
943                                  udp_sport, ntohs(mask->src));
944                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
945                                  udp_sport, ntohs(key->src));
946
947                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
948                                  udp_dport, ntohs(mask->dst));
949                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
950                                  udp_dport, ntohs(key->dst));
951                         break;
952                 default:
953                         netdev_err(priv->netdev,
954                                    "Only UDP and TCP transport are supported\n");
955                         return -EINVAL;
956                 }
957
958                 if (mask->src || mask->dst)
959                         *min_inline = MLX5_INLINE_MODE_TCP_UDP;
960         }
961
962         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_TCP)) {
963                 struct flow_dissector_key_tcp *key =
964                         skb_flow_dissector_target(f->dissector,
965                                                   FLOW_DISSECTOR_KEY_TCP,
966                                                   f->key);
967                 struct flow_dissector_key_tcp *mask =
968                         skb_flow_dissector_target(f->dissector,
969                                                   FLOW_DISSECTOR_KEY_TCP,
970                                                   f->mask);
971
972                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
973                          ntohs(mask->flags));
974                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
975                          ntohs(key->flags));
976
977                 if (mask->flags)
978                         *min_inline = MLX5_INLINE_MODE_TCP_UDP;
979         }
980
981         return 0;
982 }
983
984 static int parse_cls_flower(struct mlx5e_priv *priv,
985                             struct mlx5e_tc_flow *flow,
986                             struct mlx5_flow_spec *spec,
987                             struct tc_cls_flower_offload *f)
988 {
989         struct mlx5_core_dev *dev = priv->mdev;
990         struct mlx5_eswitch *esw = dev->priv.eswitch;
991         struct mlx5e_rep_priv *rpriv = priv->ppriv;
992         struct mlx5_eswitch_rep *rep;
993         u8 min_inline;
994         int err;
995
996         err = __parse_cls_flower(priv, spec, f, &min_inline);
997
998         if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH)) {
999                 rep = rpriv->rep;
1000                 if (rep->vport != FDB_UPLINK_VPORT &&
1001                     (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
1002                     esw->offloads.inline_mode < min_inline)) {
1003                         netdev_warn(priv->netdev,
1004                                     "Flow is not offloaded due to min inline setting, required %d actual %d\n",
1005                                     min_inline, esw->offloads.inline_mode);
1006                         return -EOPNOTSUPP;
1007                 }
1008         }
1009
1010         return err;
1011 }
1012
1013 struct pedit_headers {
1014         struct ethhdr  eth;
1015         struct iphdr   ip4;
1016         struct ipv6hdr ip6;
1017         struct tcphdr  tcp;
1018         struct udphdr  udp;
1019 };
1020
1021 static int pedit_header_offsets[] = {
1022         [TCA_PEDIT_KEY_EX_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth),
1023         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4),
1024         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6),
1025         [TCA_PEDIT_KEY_EX_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp),
1026         [TCA_PEDIT_KEY_EX_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp),
1027 };
1028
1029 #define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype])
1030
1031 static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset,
1032                          struct pedit_headers *masks,
1033                          struct pedit_headers *vals)
1034 {
1035         u32 *curr_pmask, *curr_pval;
1036
1037         if (hdr_type >= __PEDIT_HDR_TYPE_MAX)
1038                 goto out_err;
1039
1040         curr_pmask = (u32 *)(pedit_header(masks, hdr_type) + offset);
1041         curr_pval  = (u32 *)(pedit_header(vals, hdr_type) + offset);
1042
1043         if (*curr_pmask & mask)  /* disallow acting twice on the same location */
1044                 goto out_err;
1045
1046         *curr_pmask |= mask;
1047         *curr_pval  |= (val & mask);
1048
1049         return 0;
1050
1051 out_err:
1052         return -EOPNOTSUPP;
1053 }
1054
1055 struct mlx5_fields {
1056         u8  field;
1057         u8  size;
1058         u32 offset;
1059 };
1060
1061 #define OFFLOAD(fw_field, size, field, off) \
1062                 {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, size, offsetof(struct pedit_headers, field) + (off)}
1063
1064 static struct mlx5_fields fields[] = {
1065         OFFLOAD(DMAC_47_16, 4, eth.h_dest[0], 0),
1066         OFFLOAD(DMAC_47_16, 4, eth.h_dest[0], 0),
1067         OFFLOAD(DMAC_15_0,  2, eth.h_dest[4], 0),
1068         OFFLOAD(SMAC_47_16, 4, eth.h_source[0], 0),
1069         OFFLOAD(SMAC_15_0,  2, eth.h_source[4], 0),
1070         OFFLOAD(ETHERTYPE,  2, eth.h_proto, 0),
1071
1072         OFFLOAD(IP_TTL, 1, ip4.ttl,   0),
1073         OFFLOAD(SIPV4,  4, ip4.saddr, 0),
1074         OFFLOAD(DIPV4,  4, ip4.daddr, 0),
1075
1076         OFFLOAD(SIPV6_127_96, 4, ip6.saddr.s6_addr32[0], 0),
1077         OFFLOAD(SIPV6_95_64,  4, ip6.saddr.s6_addr32[1], 0),
1078         OFFLOAD(SIPV6_63_32,  4, ip6.saddr.s6_addr32[2], 0),
1079         OFFLOAD(SIPV6_31_0,   4, ip6.saddr.s6_addr32[3], 0),
1080         OFFLOAD(DIPV6_127_96, 4, ip6.daddr.s6_addr32[0], 0),
1081         OFFLOAD(DIPV6_95_64,  4, ip6.daddr.s6_addr32[1], 0),
1082         OFFLOAD(DIPV6_63_32,  4, ip6.daddr.s6_addr32[2], 0),
1083         OFFLOAD(DIPV6_31_0,   4, ip6.daddr.s6_addr32[3], 0),
1084
1085         OFFLOAD(TCP_SPORT, 2, tcp.source,  0),
1086         OFFLOAD(TCP_DPORT, 2, tcp.dest,    0),
1087         OFFLOAD(TCP_FLAGS, 1, tcp.ack_seq, 5),
1088
1089         OFFLOAD(UDP_SPORT, 2, udp.source, 0),
1090         OFFLOAD(UDP_DPORT, 2, udp.dest,   0),
1091 };
1092
1093 /* On input attr->num_mod_hdr_actions tells how many HW actions can be parsed at
1094  * max from the SW pedit action. On success, it says how many HW actions were
1095  * actually parsed.
1096  */
1097 static int offload_pedit_fields(struct pedit_headers *masks,
1098                                 struct pedit_headers *vals,
1099                                 struct mlx5e_tc_flow_parse_attr *parse_attr)
1100 {
1101         struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
1102         int i, action_size, nactions, max_actions, first, last, next_z;
1103         void *s_masks_p, *a_masks_p, *vals_p;
1104         struct mlx5_fields *f;
1105         u8 cmd, field_bsize;
1106         u32 s_mask, a_mask;
1107         unsigned long mask;
1108         __be32 mask_be32;
1109         __be16 mask_be16;
1110         void *action;
1111
1112         set_masks = &masks[TCA_PEDIT_KEY_EX_CMD_SET];
1113         add_masks = &masks[TCA_PEDIT_KEY_EX_CMD_ADD];
1114         set_vals = &vals[TCA_PEDIT_KEY_EX_CMD_SET];
1115         add_vals = &vals[TCA_PEDIT_KEY_EX_CMD_ADD];
1116
1117         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
1118         action = parse_attr->mod_hdr_actions;
1119         max_actions = parse_attr->num_mod_hdr_actions;
1120         nactions = 0;
1121
1122         for (i = 0; i < ARRAY_SIZE(fields); i++) {
1123                 f = &fields[i];
1124                 /* avoid seeing bits set from previous iterations */
1125                 s_mask = 0;
1126                 a_mask = 0;
1127
1128                 s_masks_p = (void *)set_masks + f->offset;
1129                 a_masks_p = (void *)add_masks + f->offset;
1130
1131                 memcpy(&s_mask, s_masks_p, f->size);
1132                 memcpy(&a_mask, a_masks_p, f->size);
1133
1134                 if (!s_mask && !a_mask) /* nothing to offload here */
1135                         continue;
1136
1137                 if (s_mask && a_mask) {
1138                         printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field);
1139                         return -EOPNOTSUPP;
1140                 }
1141
1142                 if (nactions == max_actions) {
1143                         printk(KERN_WARNING "mlx5: parsed %d pedit actions, can't do more\n", nactions);
1144                         return -EOPNOTSUPP;
1145                 }
1146
1147                 if (s_mask) {
1148                         cmd  = MLX5_ACTION_TYPE_SET;
1149                         mask = s_mask;
1150                         vals_p = (void *)set_vals + f->offset;
1151                         /* clear to denote we consumed this field */
1152                         memset(s_masks_p, 0, f->size);
1153                 } else {
1154                         cmd  = MLX5_ACTION_TYPE_ADD;
1155                         mask = a_mask;
1156                         vals_p = (void *)add_vals + f->offset;
1157                         /* clear to denote we consumed this field */
1158                         memset(a_masks_p, 0, f->size);
1159                 }
1160
1161                 field_bsize = f->size * BITS_PER_BYTE;
1162
1163                 if (field_bsize == 32) {
1164                         mask_be32 = *(__be32 *)&mask;
1165                         mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32));
1166                 } else if (field_bsize == 16) {
1167                         mask_be16 = *(__be16 *)&mask;
1168                         mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16));
1169                 }
1170
1171                 first = find_first_bit(&mask, field_bsize);
1172                 next_z = find_next_zero_bit(&mask, field_bsize, first);
1173                 last  = find_last_bit(&mask, field_bsize);
1174                 if (first < next_z && next_z < last) {
1175                         printk(KERN_WARNING "mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n",
1176                                mask);
1177                         return -EOPNOTSUPP;
1178                 }
1179
1180                 MLX5_SET(set_action_in, action, action_type, cmd);
1181                 MLX5_SET(set_action_in, action, field, f->field);
1182
1183                 if (cmd == MLX5_ACTION_TYPE_SET) {
1184                         MLX5_SET(set_action_in, action, offset, first);
1185                         /* length is num of bits to be written, zero means length of 32 */
1186                         MLX5_SET(set_action_in, action, length, (last - first + 1));
1187                 }
1188
1189                 if (field_bsize == 32)
1190                         MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first);
1191                 else if (field_bsize == 16)
1192                         MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first);
1193                 else if (field_bsize == 8)
1194                         MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first);
1195
1196                 action += action_size;
1197                 nactions++;
1198         }
1199
1200         parse_attr->num_mod_hdr_actions = nactions;
1201         return 0;
1202 }
1203
1204 static int alloc_mod_hdr_actions(struct mlx5e_priv *priv,
1205                                  const struct tc_action *a, int namespace,
1206                                  struct mlx5e_tc_flow_parse_attr *parse_attr)
1207 {
1208         int nkeys, action_size, max_actions;
1209
1210         nkeys = tcf_pedit_nkeys(a);
1211         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
1212
1213         if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
1214                 max_actions = MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, max_modify_header_actions);
1215         else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
1216                 max_actions = MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, max_modify_header_actions);
1217
1218         /* can get up to crazingly 16 HW actions in 32 bits pedit SW key */
1219         max_actions = min(max_actions, nkeys * 16);
1220
1221         parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL);
1222         if (!parse_attr->mod_hdr_actions)
1223                 return -ENOMEM;
1224
1225         parse_attr->num_mod_hdr_actions = max_actions;
1226         return 0;
1227 }
1228
1229 static const struct pedit_headers zero_masks = {};
1230
1231 static int parse_tc_pedit_action(struct mlx5e_priv *priv,
1232                                  const struct tc_action *a, int namespace,
1233                                  struct mlx5e_tc_flow_parse_attr *parse_attr)
1234 {
1235         struct pedit_headers masks[__PEDIT_CMD_MAX], vals[__PEDIT_CMD_MAX], *cmd_masks;
1236         int nkeys, i, err = -EOPNOTSUPP;
1237         u32 mask, val, offset;
1238         u8 cmd, htype;
1239
1240         nkeys = tcf_pedit_nkeys(a);
1241
1242         memset(masks, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1243         memset(vals,  0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1244
1245         for (i = 0; i < nkeys; i++) {
1246                 htype = tcf_pedit_htype(a, i);
1247                 cmd = tcf_pedit_cmd(a, i);
1248                 err = -EOPNOTSUPP; /* can't be all optimistic */
1249
1250                 if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK) {
1251                         printk(KERN_WARNING "mlx5: legacy pedit isn't offloaded\n");
1252                         goto out_err;
1253                 }
1254
1255                 if (cmd != TCA_PEDIT_KEY_EX_CMD_SET && cmd != TCA_PEDIT_KEY_EX_CMD_ADD) {
1256                         printk(KERN_WARNING "mlx5: pedit cmd %d isn't offloaded\n", cmd);
1257                         goto out_err;
1258                 }
1259
1260                 mask = tcf_pedit_mask(a, i);
1261                 val = tcf_pedit_val(a, i);
1262                 offset = tcf_pedit_offset(a, i);
1263
1264                 err = set_pedit_val(htype, ~mask, val, offset, &masks[cmd], &vals[cmd]);
1265                 if (err)
1266                         goto out_err;
1267         }
1268
1269         err = alloc_mod_hdr_actions(priv, a, namespace, parse_attr);
1270         if (err)
1271                 goto out_err;
1272
1273         err = offload_pedit_fields(masks, vals, parse_attr);
1274         if (err < 0)
1275                 goto out_dealloc_parsed_actions;
1276
1277         for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
1278                 cmd_masks = &masks[cmd];
1279                 if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
1280                         printk(KERN_WARNING "mlx5: attempt to offload an unsupported field (cmd %d)\n",
1281                                cmd);
1282                         print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
1283                                        16, 1, cmd_masks, sizeof(zero_masks), true);
1284                         err = -EOPNOTSUPP;
1285                         goto out_dealloc_parsed_actions;
1286                 }
1287         }
1288
1289         return 0;
1290
1291 out_dealloc_parsed_actions:
1292         kfree(parse_attr->mod_hdr_actions);
1293 out_err:
1294         return err;
1295 }
1296
1297 static bool csum_offload_supported(struct mlx5e_priv *priv, u32 action, u32 update_flags)
1298 {
1299         u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP |
1300                          TCA_CSUM_UPDATE_FLAG_UDP;
1301
1302         /*  The HW recalcs checksums only if re-writing headers */
1303         if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) {
1304                 netdev_warn(priv->netdev,
1305                             "TC csum action is only offloaded with pedit\n");
1306                 return false;
1307         }
1308
1309         if (update_flags & ~prot_flags) {
1310                 netdev_warn(priv->netdev,
1311                             "can't offload TC csum action for some header/s - flags %#x\n",
1312                             update_flags);
1313                 return false;
1314         }
1315
1316         return true;
1317 }
1318
1319 static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1320                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
1321                                 struct mlx5e_tc_flow *flow)
1322 {
1323         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
1324         const struct tc_action *a;
1325         LIST_HEAD(actions);
1326         int err;
1327
1328         if (tc_no_actions(exts))
1329                 return -EINVAL;
1330
1331         attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
1332         attr->action = 0;
1333
1334         tcf_exts_to_list(exts, &actions);
1335         list_for_each_entry(a, &actions, list) {
1336                 if (is_tcf_gact_shot(a)) {
1337                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
1338                         if (MLX5_CAP_FLOWTABLE(priv->mdev,
1339                                                flow_table_properties_nic_receive.flow_counter))
1340                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
1341                         continue;
1342                 }
1343
1344                 if (is_tcf_pedit(a)) {
1345                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_KERNEL,
1346                                                     parse_attr);
1347                         if (err)
1348                                 return err;
1349
1350                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR |
1351                                         MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1352                         continue;
1353                 }
1354
1355                 if (is_tcf_csum(a)) {
1356                         if (csum_offload_supported(priv, attr->action,
1357                                                    tcf_csum_update_flags(a)))
1358                                 continue;
1359
1360                         return -EOPNOTSUPP;
1361                 }
1362
1363                 if (is_tcf_skbedit_mark(a)) {
1364                         u32 mark = tcf_skbedit_mark(a);
1365
1366                         if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
1367                                 netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
1368                                             mark);
1369                                 return -EINVAL;
1370                         }
1371
1372                         attr->flow_tag = mark;
1373                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1374                         continue;
1375                 }
1376
1377                 return -EINVAL;
1378         }
1379
1380         return 0;
1381 }
1382
1383 static inline int cmp_encap_info(struct ip_tunnel_key *a,
1384                                  struct ip_tunnel_key *b)
1385 {
1386         return memcmp(a, b, sizeof(*a));
1387 }
1388
1389 static inline int hash_encap_info(struct ip_tunnel_key *key)
1390 {
1391         return jhash(key, sizeof(*key), 0);
1392 }
1393
1394 static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
1395                                    struct net_device *mirred_dev,
1396                                    struct net_device **out_dev,
1397                                    struct flowi4 *fl4,
1398                                    struct neighbour **out_n,
1399                                    int *out_ttl)
1400 {
1401         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1402         struct rtable *rt;
1403         struct neighbour *n = NULL;
1404
1405 #if IS_ENABLED(CONFIG_INET)
1406         int ret;
1407
1408         rt = ip_route_output_key(dev_net(mirred_dev), fl4);
1409         ret = PTR_ERR_OR_ZERO(rt);
1410         if (ret)
1411                 return ret;
1412 #else
1413         return -EOPNOTSUPP;
1414 #endif
1415         /* if the egress device isn't on the same HW e-switch, we use the uplink */
1416         if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
1417                 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
1418         else
1419                 *out_dev = rt->dst.dev;
1420
1421         *out_ttl = ip4_dst_hoplimit(&rt->dst);
1422         n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
1423         ip_rt_put(rt);
1424         if (!n)
1425                 return -ENOMEM;
1426
1427         *out_n = n;
1428         return 0;
1429 }
1430
1431 static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
1432                                    struct net_device *mirred_dev,
1433                                    struct net_device **out_dev,
1434                                    struct flowi6 *fl6,
1435                                    struct neighbour **out_n,
1436                                    int *out_ttl)
1437 {
1438         struct neighbour *n = NULL;
1439         struct dst_entry *dst;
1440
1441 #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
1442         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1443         int ret;
1444
1445         dst = ip6_route_output(dev_net(mirred_dev), NULL, fl6);
1446         ret = dst->error;
1447         if (ret) {
1448                 dst_release(dst);
1449                 return ret;
1450         }
1451
1452         *out_ttl = ip6_dst_hoplimit(dst);
1453
1454         /* if the egress device isn't on the same HW e-switch, we use the uplink */
1455         if (!switchdev_port_same_parent_id(priv->netdev, dst->dev))
1456                 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
1457         else
1458                 *out_dev = dst->dev;
1459 #else
1460         return -EOPNOTSUPP;
1461 #endif
1462
1463         n = dst_neigh_lookup(dst, &fl6->daddr);
1464         dst_release(dst);
1465         if (!n)
1466                 return -ENOMEM;
1467
1468         *out_n = n;
1469         return 0;
1470 }
1471
1472 static void gen_vxlan_header_ipv4(struct net_device *out_dev,
1473                                   char buf[], int encap_size,
1474                                   unsigned char h_dest[ETH_ALEN],
1475                                   int ttl,
1476                                   __be32 daddr,
1477                                   __be32 saddr,
1478                                   __be16 udp_dst_port,
1479                                   __be32 vx_vni)
1480 {
1481         struct ethhdr *eth = (struct ethhdr *)buf;
1482         struct iphdr  *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
1483         struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
1484         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
1485
1486         memset(buf, 0, encap_size);
1487
1488         ether_addr_copy(eth->h_dest, h_dest);
1489         ether_addr_copy(eth->h_source, out_dev->dev_addr);
1490         eth->h_proto = htons(ETH_P_IP);
1491
1492         ip->daddr = daddr;
1493         ip->saddr = saddr;
1494
1495         ip->ttl = ttl;
1496         ip->protocol = IPPROTO_UDP;
1497         ip->version = 0x4;
1498         ip->ihl = 0x5;
1499
1500         udp->dest = udp_dst_port;
1501         vxh->vx_flags = VXLAN_HF_VNI;
1502         vxh->vx_vni = vxlan_vni_field(vx_vni);
1503 }
1504
1505 static void gen_vxlan_header_ipv6(struct net_device *out_dev,
1506                                   char buf[], int encap_size,
1507                                   unsigned char h_dest[ETH_ALEN],
1508                                   int ttl,
1509                                   struct in6_addr *daddr,
1510                                   struct in6_addr *saddr,
1511                                   __be16 udp_dst_port,
1512                                   __be32 vx_vni)
1513 {
1514         struct ethhdr *eth = (struct ethhdr *)buf;
1515         struct ipv6hdr *ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr));
1516         struct udphdr *udp = (struct udphdr *)((char *)ip6h + sizeof(struct ipv6hdr));
1517         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
1518
1519         memset(buf, 0, encap_size);
1520
1521         ether_addr_copy(eth->h_dest, h_dest);
1522         ether_addr_copy(eth->h_source, out_dev->dev_addr);
1523         eth->h_proto = htons(ETH_P_IPV6);
1524
1525         ip6_flow_hdr(ip6h, 0, 0);
1526         /* the HW fills up ipv6 payload len */
1527         ip6h->nexthdr     = IPPROTO_UDP;
1528         ip6h->hop_limit   = ttl;
1529         ip6h->daddr       = *daddr;
1530         ip6h->saddr       = *saddr;
1531
1532         udp->dest = udp_dst_port;
1533         vxh->vx_flags = VXLAN_HF_VNI;
1534         vxh->vx_vni = vxlan_vni_field(vx_vni);
1535 }
1536
1537 static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
1538                                           struct net_device *mirred_dev,
1539                                           struct mlx5e_encap_entry *e)
1540 {
1541         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
1542         int ipv4_encap_size = ETH_HLEN + sizeof(struct iphdr) + VXLAN_HLEN;
1543         struct ip_tunnel_key *tun_key = &e->tun_info.key;
1544         struct net_device *out_dev;
1545         struct neighbour *n = NULL;
1546         struct flowi4 fl4 = {};
1547         char *encap_header;
1548         int ttl, err;
1549         u8 nud_state;
1550
1551         if (max_encap_size < ipv4_encap_size) {
1552                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
1553                                ipv4_encap_size, max_encap_size);
1554                 return -EOPNOTSUPP;
1555         }
1556
1557         encap_header = kzalloc(ipv4_encap_size, GFP_KERNEL);
1558         if (!encap_header)
1559                 return -ENOMEM;
1560
1561         switch (e->tunnel_type) {
1562         case MLX5_HEADER_TYPE_VXLAN:
1563                 fl4.flowi4_proto = IPPROTO_UDP;
1564                 fl4.fl4_dport = tun_key->tp_dst;
1565                 break;
1566         default:
1567                 err = -EOPNOTSUPP;
1568                 goto out;
1569         }
1570         fl4.flowi4_tos = tun_key->tos;
1571         fl4.daddr = tun_key->u.ipv4.dst;
1572         fl4.saddr = tun_key->u.ipv4.src;
1573
1574         err = mlx5e_route_lookup_ipv4(priv, mirred_dev, &out_dev,
1575                                       &fl4, &n, &ttl);
1576         if (err)
1577                 goto out;
1578
1579         /* used by mlx5e_detach_encap to lookup a neigh hash table
1580          * entry in the neigh hash table when a user deletes a rule
1581          */
1582         e->m_neigh.dev = n->dev;
1583         e->m_neigh.family = n->ops->family;
1584         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
1585         e->out_dev = out_dev;
1586
1587         /* It's importent to add the neigh to the hash table before checking
1588          * the neigh validity state. So if we'll get a notification, in case the
1589          * neigh changes it's validity state, we would find the relevant neigh
1590          * in the hash.
1591          */
1592         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
1593         if (err)
1594                 goto out;
1595
1596         read_lock_bh(&n->lock);
1597         nud_state = n->nud_state;
1598         ether_addr_copy(e->h_dest, n->ha);
1599         read_unlock_bh(&n->lock);
1600
1601         switch (e->tunnel_type) {
1602         case MLX5_HEADER_TYPE_VXLAN:
1603                 gen_vxlan_header_ipv4(out_dev, encap_header,
1604                                       ipv4_encap_size, e->h_dest, ttl,
1605                                       fl4.daddr,
1606                                       fl4.saddr, tun_key->tp_dst,
1607                                       tunnel_id_to_key32(tun_key->tun_id));
1608                 break;
1609         default:
1610                 err = -EOPNOTSUPP;
1611                 goto destroy_neigh_entry;
1612         }
1613         e->encap_size = ipv4_encap_size;
1614         e->encap_header = encap_header;
1615
1616         if (!(nud_state & NUD_VALID)) {
1617                 neigh_event_send(n, NULL);
1618                 err = -EAGAIN;
1619                 goto out;
1620         }
1621
1622         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
1623                                ipv4_encap_size, encap_header, &e->encap_id);
1624         if (err)
1625                 goto destroy_neigh_entry;
1626
1627         e->flags |= MLX5_ENCAP_ENTRY_VALID;
1628         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
1629         neigh_release(n);
1630         return err;
1631
1632 destroy_neigh_entry:
1633         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1634 out:
1635         kfree(encap_header);
1636         if (n)
1637                 neigh_release(n);
1638         return err;
1639 }
1640
1641 static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
1642                                           struct net_device *mirred_dev,
1643                                           struct mlx5e_encap_entry *e)
1644 {
1645         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
1646         int ipv6_encap_size = ETH_HLEN + sizeof(struct ipv6hdr) + VXLAN_HLEN;
1647         struct ip_tunnel_key *tun_key = &e->tun_info.key;
1648         struct net_device *out_dev;
1649         struct neighbour *n = NULL;
1650         struct flowi6 fl6 = {};
1651         char *encap_header;
1652         int err, ttl = 0;
1653         u8 nud_state;
1654
1655         if (max_encap_size < ipv6_encap_size) {
1656                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
1657                                ipv6_encap_size, max_encap_size);
1658                 return -EOPNOTSUPP;
1659         }
1660
1661         encap_header = kzalloc(ipv6_encap_size, GFP_KERNEL);
1662         if (!encap_header)
1663                 return -ENOMEM;
1664
1665         switch (e->tunnel_type) {
1666         case MLX5_HEADER_TYPE_VXLAN:
1667                 fl6.flowi6_proto = IPPROTO_UDP;
1668                 fl6.fl6_dport = tun_key->tp_dst;
1669                 break;
1670         default:
1671                 err = -EOPNOTSUPP;
1672                 goto out;
1673         }
1674
1675         fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label);
1676         fl6.daddr = tun_key->u.ipv6.dst;
1677         fl6.saddr = tun_key->u.ipv6.src;
1678
1679         err = mlx5e_route_lookup_ipv6(priv, mirred_dev, &out_dev,
1680                                       &fl6, &n, &ttl);
1681         if (err)
1682                 goto out;
1683
1684         /* used by mlx5e_detach_encap to lookup a neigh hash table
1685          * entry in the neigh hash table when a user deletes a rule
1686          */
1687         e->m_neigh.dev = n->dev;
1688         e->m_neigh.family = n->ops->family;
1689         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
1690         e->out_dev = out_dev;
1691
1692         /* It's importent to add the neigh to the hash table before checking
1693          * the neigh validity state. So if we'll get a notification, in case the
1694          * neigh changes it's validity state, we would find the relevant neigh
1695          * in the hash.
1696          */
1697         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
1698         if (err)
1699                 goto out;
1700
1701         read_lock_bh(&n->lock);
1702         nud_state = n->nud_state;
1703         ether_addr_copy(e->h_dest, n->ha);
1704         read_unlock_bh(&n->lock);
1705
1706         switch (e->tunnel_type) {
1707         case MLX5_HEADER_TYPE_VXLAN:
1708                 gen_vxlan_header_ipv6(out_dev, encap_header,
1709                                       ipv6_encap_size, e->h_dest, ttl,
1710                                       &fl6.daddr,
1711                                       &fl6.saddr, tun_key->tp_dst,
1712                                       tunnel_id_to_key32(tun_key->tun_id));
1713                 break;
1714         default:
1715                 err = -EOPNOTSUPP;
1716                 goto destroy_neigh_entry;
1717         }
1718
1719         e->encap_size = ipv6_encap_size;
1720         e->encap_header = encap_header;
1721
1722         if (!(nud_state & NUD_VALID)) {
1723                 neigh_event_send(n, NULL);
1724                 err = -EAGAIN;
1725                 goto out;
1726         }
1727
1728         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
1729                                ipv6_encap_size, encap_header, &e->encap_id);
1730         if (err)
1731                 goto destroy_neigh_entry;
1732
1733         e->flags |= MLX5_ENCAP_ENTRY_VALID;
1734         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
1735         neigh_release(n);
1736         return err;
1737
1738 destroy_neigh_entry:
1739         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1740 out:
1741         kfree(encap_header);
1742         if (n)
1743                 neigh_release(n);
1744         return err;
1745 }
1746
1747 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
1748                               struct ip_tunnel_info *tun_info,
1749                               struct net_device *mirred_dev,
1750                               struct net_device **encap_dev,
1751                               struct mlx5e_tc_flow *flow)
1752 {
1753         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1754         struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw);
1755         unsigned short family = ip_tunnel_info_af(tun_info);
1756         struct mlx5e_priv *up_priv = netdev_priv(up_dev);
1757         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1758         struct ip_tunnel_key *key = &tun_info->key;
1759         struct mlx5e_encap_entry *e;
1760         int tunnel_type, err = 0;
1761         uintptr_t hash_key;
1762         bool found = false;
1763
1764         /* udp dst port must be set */
1765         if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
1766                 goto vxlan_encap_offload_err;
1767
1768         /* setting udp src port isn't supported */
1769         if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
1770 vxlan_encap_offload_err:
1771                 netdev_warn(priv->netdev,
1772                             "must set udp dst port and not set udp src port\n");
1773                 return -EOPNOTSUPP;
1774         }
1775
1776         if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->tp_dst)) &&
1777             MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
1778                 tunnel_type = MLX5_HEADER_TYPE_VXLAN;
1779         } else {
1780                 netdev_warn(priv->netdev,
1781                             "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
1782                 return -EOPNOTSUPP;
1783         }
1784
1785         hash_key = hash_encap_info(key);
1786
1787         hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
1788                                    encap_hlist, hash_key) {
1789                 if (!cmp_encap_info(&e->tun_info.key, key)) {
1790                         found = true;
1791                         break;
1792                 }
1793         }
1794
1795         if (found)
1796                 goto attach_flow;
1797
1798         e = kzalloc(sizeof(*e), GFP_KERNEL);
1799         if (!e)
1800                 return -ENOMEM;
1801
1802         e->tun_info = *tun_info;
1803         e->tunnel_type = tunnel_type;
1804         INIT_LIST_HEAD(&e->flows);
1805
1806         if (family == AF_INET)
1807                 err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e);
1808         else if (family == AF_INET6)
1809                 err = mlx5e_create_encap_header_ipv6(priv, mirred_dev, e);
1810
1811         if (err && err != -EAGAIN)
1812                 goto out_err;
1813
1814         hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
1815
1816 attach_flow:
1817         list_add(&flow->encap, &e->flows);
1818         *encap_dev = e->out_dev;
1819         if (e->flags & MLX5_ENCAP_ENTRY_VALID)
1820                 attr->encap_id = e->encap_id;
1821
1822         return err;
1823
1824 out_err:
1825         kfree(e);
1826         return err;
1827 }
1828
1829 static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1830                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
1831                                 struct mlx5e_tc_flow *flow)
1832 {
1833         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1834         struct mlx5e_rep_priv *rpriv = priv->ppriv;
1835         struct ip_tunnel_info *info = NULL;
1836         const struct tc_action *a;
1837         LIST_HEAD(actions);
1838         bool encap = false;
1839         int err = 0;
1840
1841         if (tc_no_actions(exts))
1842                 return -EINVAL;
1843
1844         memset(attr, 0, sizeof(*attr));
1845         attr->in_rep = rpriv->rep;
1846
1847         tcf_exts_to_list(exts, &actions);
1848         list_for_each_entry(a, &actions, list) {
1849                 if (is_tcf_gact_shot(a)) {
1850                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
1851                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1852                         continue;
1853                 }
1854
1855                 if (is_tcf_pedit(a)) {
1856                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_FDB,
1857                                                     parse_attr);
1858                         if (err)
1859                                 return err;
1860
1861                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
1862                         continue;
1863                 }
1864
1865                 if (is_tcf_csum(a)) {
1866                         if (csum_offload_supported(priv, attr->action,
1867                                                    tcf_csum_update_flags(a)))
1868                                 continue;
1869
1870                         return -EOPNOTSUPP;
1871                 }
1872
1873                 if (is_tcf_mirred_egress_redirect(a)) {
1874                         int ifindex = tcf_mirred_ifindex(a);
1875                         struct net_device *out_dev, *encap_dev = NULL;
1876                         struct mlx5e_priv *out_priv;
1877
1878                         out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
1879
1880                         if (switchdev_port_same_parent_id(priv->netdev,
1881                                                           out_dev)) {
1882                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1883                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1884                                 out_priv = netdev_priv(out_dev);
1885                                 rpriv = out_priv->ppriv;
1886                                 attr->out_rep = rpriv->rep;
1887                         } else if (encap) {
1888                                 err = mlx5e_attach_encap(priv, info,
1889                                                          out_dev, &encap_dev, flow);
1890                                 if (err && err != -EAGAIN)
1891                                         return err;
1892                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
1893                                         MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1894                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1895                                 out_priv = netdev_priv(encap_dev);
1896                                 rpriv = out_priv->ppriv;
1897                                 attr->out_rep = rpriv->rep;
1898                                 attr->parse_attr = parse_attr;
1899                         } else {
1900                                 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
1901                                        priv->netdev->name, out_dev->name);
1902                                 return -EINVAL;
1903                         }
1904                         continue;
1905                 }
1906
1907                 if (is_tcf_tunnel_set(a)) {
1908                         info = tcf_tunnel_info(a);
1909                         if (info)
1910                                 encap = true;
1911                         else
1912                                 return -EOPNOTSUPP;
1913                         continue;
1914                 }
1915
1916                 if (is_tcf_vlan(a)) {
1917                         if (tcf_vlan_action(a) == TCA_VLAN_ACT_POP) {
1918                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
1919                         } else if (tcf_vlan_action(a) == TCA_VLAN_ACT_PUSH) {
1920                                 if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
1921                                         return -EOPNOTSUPP;
1922
1923                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
1924                                 attr->vlan = tcf_vlan_push_vid(a);
1925                         } else { /* action is TCA_VLAN_ACT_MODIFY */
1926                                 return -EOPNOTSUPP;
1927                         }
1928                         continue;
1929                 }
1930
1931                 if (is_tcf_tunnel_release(a)) {
1932                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
1933                         continue;
1934                 }
1935
1936                 return -EINVAL;
1937         }
1938         return err;
1939 }
1940
1941 int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
1942                            struct tc_cls_flower_offload *f)
1943 {
1944         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1945         struct mlx5e_tc_flow_parse_attr *parse_attr;
1946         struct mlx5e_tc_table *tc = &priv->fs.tc;
1947         struct mlx5e_tc_flow *flow;
1948         int attr_size, err = 0;
1949         u8 flow_flags = 0;
1950
1951         if (esw && esw->mode == SRIOV_OFFLOADS) {
1952                 flow_flags = MLX5E_TC_FLOW_ESWITCH;
1953                 attr_size  = sizeof(struct mlx5_esw_flow_attr);
1954         } else {
1955                 flow_flags = MLX5E_TC_FLOW_NIC;
1956                 attr_size  = sizeof(struct mlx5_nic_flow_attr);
1957         }
1958
1959         flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
1960         parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
1961         if (!parse_attr || !flow) {
1962                 err = -ENOMEM;
1963                 goto err_free;
1964         }
1965
1966         flow->cookie = f->cookie;
1967         flow->flags = flow_flags;
1968
1969         err = parse_cls_flower(priv, flow, &parse_attr->spec, f);
1970         if (err < 0)
1971                 goto err_free;
1972
1973         if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
1974                 err = parse_tc_fdb_actions(priv, f->exts, parse_attr, flow);
1975                 if (err < 0)
1976                         goto err_handle_encap_flow;
1977                 flow->rule = mlx5e_tc_add_fdb_flow(priv, parse_attr, flow);
1978         } else {
1979                 err = parse_tc_nic_actions(priv, f->exts, parse_attr, flow);
1980                 if (err < 0)
1981                         goto err_free;
1982                 flow->rule = mlx5e_tc_add_nic_flow(priv, parse_attr, flow);
1983         }
1984
1985         if (IS_ERR(flow->rule)) {
1986                 err = PTR_ERR(flow->rule);
1987                 goto err_free;
1988         }
1989
1990         flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
1991         err = rhashtable_insert_fast(&tc->ht, &flow->node,
1992                                      tc->ht_params);
1993         if (err)
1994                 goto err_del_rule;
1995
1996         if (flow->flags & MLX5E_TC_FLOW_ESWITCH &&
1997             !(flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP))
1998                 kvfree(parse_attr);
1999         return err;
2000
2001 err_del_rule:
2002         mlx5e_tc_del_flow(priv, flow);
2003
2004 err_handle_encap_flow:
2005         if (err == -EAGAIN) {
2006                 err = rhashtable_insert_fast(&tc->ht, &flow->node,
2007                                              tc->ht_params);
2008                 if (err)
2009                         mlx5e_tc_del_flow(priv, flow);
2010                 else
2011                         return 0;
2012         }
2013
2014 err_free:
2015         kvfree(parse_attr);
2016         kfree(flow);
2017         return err;
2018 }
2019
2020 int mlx5e_delete_flower(struct mlx5e_priv *priv,
2021                         struct tc_cls_flower_offload *f)
2022 {
2023         struct mlx5e_tc_flow *flow;
2024         struct mlx5e_tc_table *tc = &priv->fs.tc;
2025
2026         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
2027                                       tc->ht_params);
2028         if (!flow)
2029                 return -EINVAL;
2030
2031         rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
2032
2033         mlx5e_tc_del_flow(priv, flow);
2034
2035         kfree(flow);
2036
2037         return 0;
2038 }
2039
2040 int mlx5e_stats_flower(struct mlx5e_priv *priv,
2041                        struct tc_cls_flower_offload *f)
2042 {
2043         struct mlx5e_tc_table *tc = &priv->fs.tc;
2044         struct mlx5e_tc_flow *flow;
2045         struct mlx5_fc *counter;
2046         u64 bytes;
2047         u64 packets;
2048         u64 lastuse;
2049
2050         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
2051                                       tc->ht_params);
2052         if (!flow)
2053                 return -EINVAL;
2054
2055         if (!(flow->flags & MLX5E_TC_FLOW_OFFLOADED))
2056                 return 0;
2057
2058         counter = mlx5_flow_rule_counter(flow->rule);
2059         if (!counter)
2060                 return 0;
2061
2062         mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
2063
2064         tcf_exts_stats_update(f->exts, bytes, packets, lastuse);
2065
2066         return 0;
2067 }
2068
2069 static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
2070         .head_offset = offsetof(struct mlx5e_tc_flow, node),
2071         .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
2072         .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
2073         .automatic_shrinking = true,
2074 };
2075
2076 int mlx5e_tc_init(struct mlx5e_priv *priv)
2077 {
2078         struct mlx5e_tc_table *tc = &priv->fs.tc;
2079
2080         hash_init(tc->mod_hdr_tbl);
2081
2082         tc->ht_params = mlx5e_tc_flow_ht_params;
2083         return rhashtable_init(&tc->ht, &tc->ht_params);
2084 }
2085
2086 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
2087 {
2088         struct mlx5e_tc_flow *flow = ptr;
2089         struct mlx5e_priv *priv = arg;
2090
2091         mlx5e_tc_del_flow(priv, flow);
2092         kfree(flow);
2093 }
2094
2095 void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
2096 {
2097         struct mlx5e_tc_table *tc = &priv->fs.tc;
2098
2099         rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
2100
2101         if (!IS_ERR_OR_NULL(tc->t)) {
2102                 mlx5_destroy_flow_table(tc->t);
2103                 tc->t = NULL;
2104         }
2105 }