net/mlx5e: Use short attribute form when adding/deleting offloaded TC flows
[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 */
73         union {
74                 struct mlx5_esw_flow_attr esw_attr[0];
75                 struct mlx5_nic_flow_attr nic_attr[0];
76         };
77 };
78
79 struct mlx5e_tc_flow_parse_attr {
80         struct mlx5_flow_spec spec;
81         int num_mod_hdr_actions;
82         void *mod_hdr_actions;
83 };
84
85 enum {
86         MLX5_HEADER_TYPE_VXLAN = 0x0,
87         MLX5_HEADER_TYPE_NVGRE = 0x1,
88 };
89
90 #define MLX5E_TC_TABLE_NUM_ENTRIES 1024
91 #define MLX5E_TC_TABLE_NUM_GROUPS 4
92
93 static struct mlx5_flow_handle *
94 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
95                       struct mlx5e_tc_flow_parse_attr *parse_attr,
96                       struct mlx5e_tc_flow *flow)
97 {
98         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
99         struct mlx5_core_dev *dev = priv->mdev;
100         struct mlx5_flow_destination dest = {};
101         struct mlx5_flow_act flow_act = {
102                 .action = attr->action,
103                 .flow_tag = attr->flow_tag,
104                 .encap_id = 0,
105         };
106         struct mlx5_fc *counter = NULL;
107         struct mlx5_flow_handle *rule;
108         bool table_created = false;
109         int err;
110
111         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
112                 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
113                 dest.ft = priv->fs.vlan.ft.t;
114         } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
115                 counter = mlx5_fc_create(dev, true);
116                 if (IS_ERR(counter))
117                         return ERR_CAST(counter);
118
119                 dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
120                 dest.counter = counter;
121         }
122
123         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
124                 err = mlx5_modify_header_alloc(dev, MLX5_FLOW_NAMESPACE_KERNEL,
125                                                parse_attr->num_mod_hdr_actions,
126                                                parse_attr->mod_hdr_actions,
127                                                &attr->mod_hdr_id);
128                 flow_act.modify_id = attr->mod_hdr_id;
129                 kfree(parse_attr->mod_hdr_actions);
130                 if (err) {
131                         rule = ERR_PTR(err);
132                         goto err_create_mod_hdr_id;
133                 }
134         }
135
136         if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
137                 priv->fs.tc.t =
138                         mlx5_create_auto_grouped_flow_table(priv->fs.ns,
139                                                             MLX5E_TC_PRIO,
140                                                             MLX5E_TC_TABLE_NUM_ENTRIES,
141                                                             MLX5E_TC_TABLE_NUM_GROUPS,
142                                                             0, 0);
143                 if (IS_ERR(priv->fs.tc.t)) {
144                         netdev_err(priv->netdev,
145                                    "Failed to create tc offload table\n");
146                         rule = ERR_CAST(priv->fs.tc.t);
147                         goto err_create_ft;
148                 }
149
150                 table_created = true;
151         }
152
153         parse_attr->spec.match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
154         rule = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec,
155                                    &flow_act, &dest, 1);
156
157         if (IS_ERR(rule))
158                 goto err_add_rule;
159
160         return rule;
161
162 err_add_rule:
163         if (table_created) {
164                 mlx5_destroy_flow_table(priv->fs.tc.t);
165                 priv->fs.tc.t = NULL;
166         }
167 err_create_ft:
168         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
169                 mlx5_modify_header_dealloc(priv->mdev,
170                                            attr->mod_hdr_id);
171 err_create_mod_hdr_id:
172         mlx5_fc_destroy(dev, counter);
173
174         return rule;
175 }
176
177 static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
178                                   struct mlx5e_tc_flow *flow)
179 {
180         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
181         struct mlx5_fc *counter = NULL;
182
183         counter = mlx5_flow_rule_counter(flow->rule);
184         mlx5_del_flow_rules(flow->rule);
185         mlx5_fc_destroy(priv->mdev, counter);
186
187         if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
188                 mlx5_destroy_flow_table(priv->fs.tc.t);
189                 priv->fs.tc.t = NULL;
190         }
191
192         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
193                 mlx5_modify_header_dealloc(priv->mdev,
194                                            attr->mod_hdr_id);
195 }
196
197 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
198                                struct mlx5e_tc_flow *flow);
199
200 static struct mlx5_flow_handle *
201 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
202                       struct mlx5e_tc_flow_parse_attr *parse_attr,
203                       struct mlx5e_tc_flow *flow)
204 {
205         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
206         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
207         struct mlx5_flow_handle *rule;
208         int err;
209
210         err = mlx5_eswitch_add_vlan_action(esw, attr);
211         if (err) {
212                 rule = ERR_PTR(err);
213                 goto err_add_vlan;
214         }
215
216         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
217                 err = mlx5_modify_header_alloc(priv->mdev, MLX5_FLOW_NAMESPACE_FDB,
218                                                parse_attr->num_mod_hdr_actions,
219                                                parse_attr->mod_hdr_actions,
220                                                &attr->mod_hdr_id);
221                 kfree(parse_attr->mod_hdr_actions);
222                 if (err) {
223                         rule = ERR_PTR(err);
224                         goto err_mod_hdr;
225                 }
226         }
227
228         rule = mlx5_eswitch_add_offloaded_rule(esw, &parse_attr->spec, attr);
229         if (IS_ERR(rule))
230                 goto err_add_rule;
231
232         return rule;
233
234 err_add_rule:
235         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
236                 mlx5_modify_header_dealloc(priv->mdev,
237                                            attr->mod_hdr_id);
238 err_mod_hdr:
239         mlx5_eswitch_del_vlan_action(esw, attr);
240 err_add_vlan:
241         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
242                 mlx5e_detach_encap(priv, flow);
243         return rule;
244 }
245
246 static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
247                                   struct mlx5e_tc_flow *flow)
248 {
249         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
250         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
251
252         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
253                 flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
254                 mlx5_eswitch_del_offloaded_rule(esw, flow->rule, attr);
255         }
256
257         mlx5_eswitch_del_vlan_action(esw, attr);
258
259         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP) {
260                 mlx5e_detach_encap(priv, flow);
261                 kvfree(attr->parse_attr);
262         }
263
264         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
265                 mlx5_modify_header_dealloc(priv->mdev,
266                                            attr->mod_hdr_id);
267 }
268
269 void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
270                               struct mlx5e_encap_entry *e)
271 {
272         struct mlx5e_tc_flow *flow;
273         int err;
274
275         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
276                                e->encap_size, e->encap_header,
277                                &e->encap_id);
278         if (err) {
279                 mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %d\n",
280                                err);
281                 return;
282         }
283         e->flags |= MLX5_ENCAP_ENTRY_VALID;
284         mlx5e_rep_queue_neigh_stats_work(priv);
285
286         list_for_each_entry(flow, &e->flows, encap) {
287                 flow->esw_attr->encap_id = e->encap_id;
288                 flow->rule = mlx5e_tc_add_fdb_flow(priv,
289                                                    flow->esw_attr->parse_attr,
290                                                    flow);
291                 if (IS_ERR(flow->rule)) {
292                         err = PTR_ERR(flow->rule);
293                         mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n",
294                                        err);
295                         continue;
296                 }
297                 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
298         }
299 }
300
301 void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
302                               struct mlx5e_encap_entry *e)
303 {
304         struct mlx5e_tc_flow *flow;
305         struct mlx5_fc *counter;
306
307         list_for_each_entry(flow, &e->flows, encap) {
308                 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
309                         flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
310                         counter = mlx5_flow_rule_counter(flow->rule);
311                         mlx5_del_flow_rules(flow->rule);
312                         mlx5_fc_destroy(priv->mdev, counter);
313                 }
314         }
315
316         if (e->flags & MLX5_ENCAP_ENTRY_VALID) {
317                 e->flags &= ~MLX5_ENCAP_ENTRY_VALID;
318                 mlx5_encap_dealloc(priv->mdev, e->encap_id);
319         }
320 }
321
322 void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
323 {
324         struct mlx5e_neigh *m_neigh = &nhe->m_neigh;
325         u64 bytes, packets, lastuse = 0;
326         struct mlx5e_tc_flow *flow;
327         struct mlx5e_encap_entry *e;
328         struct mlx5_fc *counter;
329         struct neigh_table *tbl;
330         bool neigh_used = false;
331         struct neighbour *n;
332
333         if (m_neigh->family == AF_INET)
334                 tbl = &arp_tbl;
335 #if IS_ENABLED(CONFIG_IPV6)
336         else if (m_neigh->family == AF_INET6)
337                 tbl = ipv6_stub->nd_tbl;
338 #endif
339         else
340                 return;
341
342         list_for_each_entry(e, &nhe->encap_list, encap_list) {
343                 if (!(e->flags & MLX5_ENCAP_ENTRY_VALID))
344                         continue;
345                 list_for_each_entry(flow, &e->flows, encap) {
346                         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
347                                 counter = mlx5_flow_rule_counter(flow->rule);
348                                 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
349                                 if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) {
350                                         neigh_used = true;
351                                         break;
352                                 }
353                         }
354                 }
355         }
356
357         if (neigh_used) {
358                 nhe->reported_lastuse = jiffies;
359
360                 /* find the relevant neigh according to the cached device and
361                  * dst ip pair
362                  */
363                 n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev);
364                 if (!n) {
365                         WARN(1, "The neighbour already freed\n");
366                         return;
367                 }
368
369                 neigh_event_send(n, NULL);
370                 neigh_release(n);
371         }
372 }
373
374 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
375                                struct mlx5e_tc_flow *flow)
376 {
377         struct list_head *next = flow->encap.next;
378
379         list_del(&flow->encap);
380         if (list_empty(next)) {
381                 struct mlx5e_encap_entry *e;
382
383                 e = list_entry(next, struct mlx5e_encap_entry, flows);
384                 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
385
386                 if (e->flags & MLX5_ENCAP_ENTRY_VALID)
387                         mlx5_encap_dealloc(priv->mdev, e->encap_id);
388
389                 hash_del_rcu(&e->encap_hlist);
390                 kfree(e->encap_header);
391                 kfree(e);
392         }
393 }
394
395 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
396                               struct mlx5e_tc_flow *flow)
397 {
398         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
399                 mlx5e_tc_del_fdb_flow(priv, flow);
400         else
401                 mlx5e_tc_del_nic_flow(priv, flow);
402 }
403
404 static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
405                              struct tc_cls_flower_offload *f)
406 {
407         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
408                                        outer_headers);
409         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
410                                        outer_headers);
411         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
412                                     misc_parameters);
413         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
414                                     misc_parameters);
415
416         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
417         MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
418
419         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
420                 struct flow_dissector_key_keyid *key =
421                         skb_flow_dissector_target(f->dissector,
422                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
423                                                   f->key);
424                 struct flow_dissector_key_keyid *mask =
425                         skb_flow_dissector_target(f->dissector,
426                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
427                                                   f->mask);
428                 MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
429                          be32_to_cpu(mask->keyid));
430                 MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
431                          be32_to_cpu(key->keyid));
432         }
433 }
434
435 static int parse_tunnel_attr(struct mlx5e_priv *priv,
436                              struct mlx5_flow_spec *spec,
437                              struct tc_cls_flower_offload *f)
438 {
439         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
440                                        outer_headers);
441         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
442                                        outer_headers);
443
444         struct flow_dissector_key_control *enc_control =
445                 skb_flow_dissector_target(f->dissector,
446                                           FLOW_DISSECTOR_KEY_ENC_CONTROL,
447                                           f->key);
448
449         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
450                 struct flow_dissector_key_ports *key =
451                         skb_flow_dissector_target(f->dissector,
452                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
453                                                   f->key);
454                 struct flow_dissector_key_ports *mask =
455                         skb_flow_dissector_target(f->dissector,
456                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
457                                                   f->mask);
458                 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
459                 struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw);
460                 struct mlx5e_priv *up_priv = netdev_priv(up_dev);
461
462                 /* Full udp dst port must be given */
463                 if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
464                         goto vxlan_match_offload_err;
465
466                 if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->dst)) &&
467                     MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
468                         parse_vxlan_attr(spec, f);
469                 else {
470                         netdev_warn(priv->netdev,
471                                     "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
472                         return -EOPNOTSUPP;
473                 }
474
475                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
476                          udp_dport, ntohs(mask->dst));
477                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
478                          udp_dport, ntohs(key->dst));
479
480                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
481                          udp_sport, ntohs(mask->src));
482                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
483                          udp_sport, ntohs(key->src));
484         } else { /* udp dst port must be given */
485 vxlan_match_offload_err:
486                 netdev_warn(priv->netdev,
487                             "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
488                 return -EOPNOTSUPP;
489         }
490
491         if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
492                 struct flow_dissector_key_ipv4_addrs *key =
493                         skb_flow_dissector_target(f->dissector,
494                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
495                                                   f->key);
496                 struct flow_dissector_key_ipv4_addrs *mask =
497                         skb_flow_dissector_target(f->dissector,
498                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
499                                                   f->mask);
500                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
501                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
502                          ntohl(mask->src));
503                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
504                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
505                          ntohl(key->src));
506
507                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
508                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
509                          ntohl(mask->dst));
510                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
511                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
512                          ntohl(key->dst));
513
514                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
515                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
516         } else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
517                 struct flow_dissector_key_ipv6_addrs *key =
518                         skb_flow_dissector_target(f->dissector,
519                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
520                                                   f->key);
521                 struct flow_dissector_key_ipv6_addrs *mask =
522                         skb_flow_dissector_target(f->dissector,
523                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
524                                                   f->mask);
525
526                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
527                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
528                        &mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
529                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
530                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
531                        &key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
532
533                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
534                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
535                        &mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
536                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
537                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
538                        &key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
539
540                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
541                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6);
542         }
543
544         /* Enforce DMAC when offloading incoming tunneled flows.
545          * Flow counters require a match on the DMAC.
546          */
547         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
548         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
549         ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
550                                      dmac_47_16), priv->netdev->dev_addr);
551
552         /* let software handle IP fragments */
553         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
554         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
555
556         return 0;
557 }
558
559 static int __parse_cls_flower(struct mlx5e_priv *priv,
560                               struct mlx5_flow_spec *spec,
561                               struct tc_cls_flower_offload *f,
562                               u8 *min_inline)
563 {
564         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
565                                        outer_headers);
566         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
567                                        outer_headers);
568         u16 addr_type = 0;
569         u8 ip_proto = 0;
570
571         *min_inline = MLX5_INLINE_MODE_L2;
572
573         if (f->dissector->used_keys &
574             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
575               BIT(FLOW_DISSECTOR_KEY_BASIC) |
576               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
577               BIT(FLOW_DISSECTOR_KEY_VLAN) |
578               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
579               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
580               BIT(FLOW_DISSECTOR_KEY_PORTS) |
581               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
582               BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
583               BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
584               BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
585               BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
586               BIT(FLOW_DISSECTOR_KEY_TCP) |
587               BIT(FLOW_DISSECTOR_KEY_IP))) {
588                 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
589                             f->dissector->used_keys);
590                 return -EOPNOTSUPP;
591         }
592
593         if ((dissector_uses_key(f->dissector,
594                                 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
595              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
596              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
597             dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
598                 struct flow_dissector_key_control *key =
599                         skb_flow_dissector_target(f->dissector,
600                                                   FLOW_DISSECTOR_KEY_ENC_CONTROL,
601                                                   f->key);
602                 switch (key->addr_type) {
603                 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
604                 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
605                         if (parse_tunnel_attr(priv, spec, f))
606                                 return -EOPNOTSUPP;
607                         break;
608                 default:
609                         return -EOPNOTSUPP;
610                 }
611
612                 /* In decap flow, header pointers should point to the inner
613                  * headers, outer header were already set by parse_tunnel_attr
614                  */
615                 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
616                                          inner_headers);
617                 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
618                                          inner_headers);
619         }
620
621         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
622                 struct flow_dissector_key_control *key =
623                         skb_flow_dissector_target(f->dissector,
624                                                   FLOW_DISSECTOR_KEY_CONTROL,
625                                                   f->key);
626
627                 struct flow_dissector_key_control *mask =
628                         skb_flow_dissector_target(f->dissector,
629                                                   FLOW_DISSECTOR_KEY_CONTROL,
630                                                   f->mask);
631                 addr_type = key->addr_type;
632
633                 if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
634                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
635                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
636                                  key->flags & FLOW_DIS_IS_FRAGMENT);
637
638                         /* the HW doesn't need L3 inline to match on frag=no */
639                         if (key->flags & FLOW_DIS_IS_FRAGMENT)
640                                 *min_inline = MLX5_INLINE_MODE_IP;
641                 }
642         }
643
644         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
645                 struct flow_dissector_key_basic *key =
646                         skb_flow_dissector_target(f->dissector,
647                                                   FLOW_DISSECTOR_KEY_BASIC,
648                                                   f->key);
649                 struct flow_dissector_key_basic *mask =
650                         skb_flow_dissector_target(f->dissector,
651                                                   FLOW_DISSECTOR_KEY_BASIC,
652                                                   f->mask);
653                 ip_proto = key->ip_proto;
654
655                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
656                          ntohs(mask->n_proto));
657                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
658                          ntohs(key->n_proto));
659
660                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
661                          mask->ip_proto);
662                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
663                          key->ip_proto);
664
665                 if (mask->ip_proto)
666                         *min_inline = MLX5_INLINE_MODE_IP;
667         }
668
669         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
670                 struct flow_dissector_key_eth_addrs *key =
671                         skb_flow_dissector_target(f->dissector,
672                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
673                                                   f->key);
674                 struct flow_dissector_key_eth_addrs *mask =
675                         skb_flow_dissector_target(f->dissector,
676                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
677                                                   f->mask);
678
679                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
680                                              dmac_47_16),
681                                 mask->dst);
682                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
683                                              dmac_47_16),
684                                 key->dst);
685
686                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
687                                              smac_47_16),
688                                 mask->src);
689                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
690                                              smac_47_16),
691                                 key->src);
692         }
693
694         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
695                 struct flow_dissector_key_vlan *key =
696                         skb_flow_dissector_target(f->dissector,
697                                                   FLOW_DISSECTOR_KEY_VLAN,
698                                                   f->key);
699                 struct flow_dissector_key_vlan *mask =
700                         skb_flow_dissector_target(f->dissector,
701                                                   FLOW_DISSECTOR_KEY_VLAN,
702                                                   f->mask);
703                 if (mask->vlan_id || mask->vlan_priority) {
704                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
705                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1);
706
707                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
708                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
709
710                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
711                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
712                 }
713         }
714
715         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
716                 struct flow_dissector_key_ipv4_addrs *key =
717                         skb_flow_dissector_target(f->dissector,
718                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
719                                                   f->key);
720                 struct flow_dissector_key_ipv4_addrs *mask =
721                         skb_flow_dissector_target(f->dissector,
722                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
723                                                   f->mask);
724
725                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
726                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
727                        &mask->src, sizeof(mask->src));
728                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
729                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
730                        &key->src, sizeof(key->src));
731                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
732                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
733                        &mask->dst, sizeof(mask->dst));
734                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
735                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
736                        &key->dst, sizeof(key->dst));
737
738                 if (mask->src || mask->dst)
739                         *min_inline = MLX5_INLINE_MODE_IP;
740         }
741
742         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
743                 struct flow_dissector_key_ipv6_addrs *key =
744                         skb_flow_dissector_target(f->dissector,
745                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
746                                                   f->key);
747                 struct flow_dissector_key_ipv6_addrs *mask =
748                         skb_flow_dissector_target(f->dissector,
749                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
750                                                   f->mask);
751
752                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
753                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
754                        &mask->src, sizeof(mask->src));
755                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
756                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
757                        &key->src, sizeof(key->src));
758
759                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
760                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
761                        &mask->dst, sizeof(mask->dst));
762                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
763                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
764                        &key->dst, sizeof(key->dst));
765
766                 if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
767                     ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
768                         *min_inline = MLX5_INLINE_MODE_IP;
769         }
770
771         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
772                 struct flow_dissector_key_ports *key =
773                         skb_flow_dissector_target(f->dissector,
774                                                   FLOW_DISSECTOR_KEY_PORTS,
775                                                   f->key);
776                 struct flow_dissector_key_ports *mask =
777                         skb_flow_dissector_target(f->dissector,
778                                                   FLOW_DISSECTOR_KEY_PORTS,
779                                                   f->mask);
780                 switch (ip_proto) {
781                 case IPPROTO_TCP:
782                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
783                                  tcp_sport, ntohs(mask->src));
784                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
785                                  tcp_sport, ntohs(key->src));
786
787                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
788                                  tcp_dport, ntohs(mask->dst));
789                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
790                                  tcp_dport, ntohs(key->dst));
791                         break;
792
793                 case IPPROTO_UDP:
794                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
795                                  udp_sport, ntohs(mask->src));
796                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
797                                  udp_sport, ntohs(key->src));
798
799                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
800                                  udp_dport, ntohs(mask->dst));
801                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
802                                  udp_dport, ntohs(key->dst));
803                         break;
804                 default:
805                         netdev_err(priv->netdev,
806                                    "Only UDP and TCP transport are supported\n");
807                         return -EINVAL;
808                 }
809
810                 if (mask->src || mask->dst)
811                         *min_inline = MLX5_INLINE_MODE_TCP_UDP;
812         }
813
814         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_IP)) {
815                 struct flow_dissector_key_ip *key =
816                         skb_flow_dissector_target(f->dissector,
817                                                   FLOW_DISSECTOR_KEY_IP,
818                                                   f->key);
819                 struct flow_dissector_key_ip *mask =
820                         skb_flow_dissector_target(f->dissector,
821                                                   FLOW_DISSECTOR_KEY_IP,
822                                                   f->mask);
823
824                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, mask->tos & 0x3);
825                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, key->tos & 0x3);
826
827                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, mask->tos >> 2);
828                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, key->tos  >> 2);
829
830                 if (mask->tos)
831                         *min_inline = MLX5_INLINE_MODE_IP;
832
833                 if (mask->ttl) /* currently not supported */
834                         return -EOPNOTSUPP;
835         }
836
837         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_TCP)) {
838                 struct flow_dissector_key_tcp *key =
839                         skb_flow_dissector_target(f->dissector,
840                                                   FLOW_DISSECTOR_KEY_TCP,
841                                                   f->key);
842                 struct flow_dissector_key_tcp *mask =
843                         skb_flow_dissector_target(f->dissector,
844                                                   FLOW_DISSECTOR_KEY_TCP,
845                                                   f->mask);
846
847                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
848                          ntohs(mask->flags));
849                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
850                          ntohs(key->flags));
851
852                 if (mask->flags)
853                         *min_inline = MLX5_INLINE_MODE_TCP_UDP;
854         }
855
856         return 0;
857 }
858
859 static int parse_cls_flower(struct mlx5e_priv *priv,
860                             struct mlx5e_tc_flow *flow,
861                             struct mlx5_flow_spec *spec,
862                             struct tc_cls_flower_offload *f)
863 {
864         struct mlx5_core_dev *dev = priv->mdev;
865         struct mlx5_eswitch *esw = dev->priv.eswitch;
866         struct mlx5e_rep_priv *rpriv = priv->ppriv;
867         struct mlx5_eswitch_rep *rep;
868         u8 min_inline;
869         int err;
870
871         err = __parse_cls_flower(priv, spec, f, &min_inline);
872
873         if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH)) {
874                 rep = rpriv->rep;
875                 if (rep->vport != FDB_UPLINK_VPORT &&
876                     (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
877                     esw->offloads.inline_mode < min_inline)) {
878                         netdev_warn(priv->netdev,
879                                     "Flow is not offloaded due to min inline setting, required %d actual %d\n",
880                                     min_inline, esw->offloads.inline_mode);
881                         return -EOPNOTSUPP;
882                 }
883         }
884
885         return err;
886 }
887
888 struct pedit_headers {
889         struct ethhdr  eth;
890         struct iphdr   ip4;
891         struct ipv6hdr ip6;
892         struct tcphdr  tcp;
893         struct udphdr  udp;
894 };
895
896 static int pedit_header_offsets[] = {
897         [TCA_PEDIT_KEY_EX_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth),
898         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4),
899         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6),
900         [TCA_PEDIT_KEY_EX_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp),
901         [TCA_PEDIT_KEY_EX_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp),
902 };
903
904 #define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype])
905
906 static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset,
907                          struct pedit_headers *masks,
908                          struct pedit_headers *vals)
909 {
910         u32 *curr_pmask, *curr_pval;
911
912         if (hdr_type >= __PEDIT_HDR_TYPE_MAX)
913                 goto out_err;
914
915         curr_pmask = (u32 *)(pedit_header(masks, hdr_type) + offset);
916         curr_pval  = (u32 *)(pedit_header(vals, hdr_type) + offset);
917
918         if (*curr_pmask & mask)  /* disallow acting twice on the same location */
919                 goto out_err;
920
921         *curr_pmask |= mask;
922         *curr_pval  |= (val & mask);
923
924         return 0;
925
926 out_err:
927         return -EOPNOTSUPP;
928 }
929
930 struct mlx5_fields {
931         u8  field;
932         u8  size;
933         u32 offset;
934 };
935
936 static struct mlx5_fields fields[] = {
937         {MLX5_ACTION_IN_FIELD_OUT_DMAC_47_16, 4, offsetof(struct pedit_headers, eth.h_dest[0])},
938         {MLX5_ACTION_IN_FIELD_OUT_DMAC_15_0,  2, offsetof(struct pedit_headers, eth.h_dest[4])},
939         {MLX5_ACTION_IN_FIELD_OUT_SMAC_47_16, 4, offsetof(struct pedit_headers, eth.h_source[0])},
940         {MLX5_ACTION_IN_FIELD_OUT_SMAC_15_0,  2, offsetof(struct pedit_headers, eth.h_source[4])},
941         {MLX5_ACTION_IN_FIELD_OUT_ETHERTYPE,  2, offsetof(struct pedit_headers, eth.h_proto)},
942
943         {MLX5_ACTION_IN_FIELD_OUT_IP_DSCP, 1, offsetof(struct pedit_headers, ip4.tos)},
944         {MLX5_ACTION_IN_FIELD_OUT_IP_TTL,  1, offsetof(struct pedit_headers, ip4.ttl)},
945         {MLX5_ACTION_IN_FIELD_OUT_SIPV4,   4, offsetof(struct pedit_headers, ip4.saddr)},
946         {MLX5_ACTION_IN_FIELD_OUT_DIPV4,   4, offsetof(struct pedit_headers, ip4.daddr)},
947
948         {MLX5_ACTION_IN_FIELD_OUT_SIPV6_127_96, 4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[0])},
949         {MLX5_ACTION_IN_FIELD_OUT_SIPV6_95_64,  4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[1])},
950         {MLX5_ACTION_IN_FIELD_OUT_SIPV6_63_32,  4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[2])},
951         {MLX5_ACTION_IN_FIELD_OUT_SIPV6_31_0,   4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[3])},
952         {MLX5_ACTION_IN_FIELD_OUT_DIPV6_127_96, 4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[0])},
953         {MLX5_ACTION_IN_FIELD_OUT_DIPV6_95_64,  4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[1])},
954         {MLX5_ACTION_IN_FIELD_OUT_DIPV6_63_32,  4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[2])},
955         {MLX5_ACTION_IN_FIELD_OUT_DIPV6_31_0,   4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[3])},
956
957         {MLX5_ACTION_IN_FIELD_OUT_TCP_SPORT, 2, offsetof(struct pedit_headers, tcp.source)},
958         {MLX5_ACTION_IN_FIELD_OUT_TCP_DPORT, 2, offsetof(struct pedit_headers, tcp.dest)},
959         {MLX5_ACTION_IN_FIELD_OUT_TCP_FLAGS, 1, offsetof(struct pedit_headers, tcp.ack_seq) + 5},
960
961         {MLX5_ACTION_IN_FIELD_OUT_UDP_SPORT, 2, offsetof(struct pedit_headers, udp.source)},
962         {MLX5_ACTION_IN_FIELD_OUT_UDP_DPORT, 2, offsetof(struct pedit_headers, udp.dest)},
963 };
964
965 /* On input attr->num_mod_hdr_actions tells how many HW actions can be parsed at
966  * max from the SW pedit action. On success, it says how many HW actions were
967  * actually parsed.
968  */
969 static int offload_pedit_fields(struct pedit_headers *masks,
970                                 struct pedit_headers *vals,
971                                 struct mlx5e_tc_flow_parse_attr *parse_attr)
972 {
973         struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
974         int i, action_size, nactions, max_actions, first, last, first_z;
975         void *s_masks_p, *a_masks_p, *vals_p;
976         struct mlx5_fields *f;
977         u8 cmd, field_bsize;
978         u32 s_mask, a_mask;
979         unsigned long mask;
980         void *action;
981
982         set_masks = &masks[TCA_PEDIT_KEY_EX_CMD_SET];
983         add_masks = &masks[TCA_PEDIT_KEY_EX_CMD_ADD];
984         set_vals = &vals[TCA_PEDIT_KEY_EX_CMD_SET];
985         add_vals = &vals[TCA_PEDIT_KEY_EX_CMD_ADD];
986
987         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
988         action = parse_attr->mod_hdr_actions;
989         max_actions = parse_attr->num_mod_hdr_actions;
990         nactions = 0;
991
992         for (i = 0; i < ARRAY_SIZE(fields); i++) {
993                 f = &fields[i];
994                 /* avoid seeing bits set from previous iterations */
995                 s_mask = 0;
996                 a_mask = 0;
997
998                 s_masks_p = (void *)set_masks + f->offset;
999                 a_masks_p = (void *)add_masks + f->offset;
1000
1001                 memcpy(&s_mask, s_masks_p, f->size);
1002                 memcpy(&a_mask, a_masks_p, f->size);
1003
1004                 if (!s_mask && !a_mask) /* nothing to offload here */
1005                         continue;
1006
1007                 if (s_mask && a_mask) {
1008                         printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field);
1009                         return -EOPNOTSUPP;
1010                 }
1011
1012                 if (nactions == max_actions) {
1013                         printk(KERN_WARNING "mlx5: parsed %d pedit actions, can't do more\n", nactions);
1014                         return -EOPNOTSUPP;
1015                 }
1016
1017                 if (s_mask) {
1018                         cmd  = MLX5_ACTION_TYPE_SET;
1019                         mask = s_mask;
1020                         vals_p = (void *)set_vals + f->offset;
1021                         /* clear to denote we consumed this field */
1022                         memset(s_masks_p, 0, f->size);
1023                 } else {
1024                         cmd  = MLX5_ACTION_TYPE_ADD;
1025                         mask = a_mask;
1026                         vals_p = (void *)add_vals + f->offset;
1027                         /* clear to denote we consumed this field */
1028                         memset(a_masks_p, 0, f->size);
1029                 }
1030
1031                 field_bsize = f->size * BITS_PER_BYTE;
1032
1033                 first_z = find_first_zero_bit(&mask, field_bsize);
1034                 first = find_first_bit(&mask, field_bsize);
1035                 last  = find_last_bit(&mask, field_bsize);
1036                 if (first > 0 || last != (field_bsize - 1) || first_z < last) {
1037                         printk(KERN_WARNING "mlx5: partial rewrite (mask %lx) is currently not offloaded\n",
1038                                mask);
1039                         return -EOPNOTSUPP;
1040                 }
1041
1042                 MLX5_SET(set_action_in, action, action_type, cmd);
1043                 MLX5_SET(set_action_in, action, field, f->field);
1044
1045                 if (cmd == MLX5_ACTION_TYPE_SET) {
1046                         MLX5_SET(set_action_in, action, offset, 0);
1047                         /* length is num of bits to be written, zero means length of 32 */
1048                         MLX5_SET(set_action_in, action, length, field_bsize);
1049                 }
1050
1051                 if (field_bsize == 32)
1052                         MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p));
1053                 else if (field_bsize == 16)
1054                         MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p));
1055                 else if (field_bsize == 8)
1056                         MLX5_SET(set_action_in, action, data, *(u8 *)vals_p);
1057
1058                 action += action_size;
1059                 nactions++;
1060         }
1061
1062         parse_attr->num_mod_hdr_actions = nactions;
1063         return 0;
1064 }
1065
1066 static int alloc_mod_hdr_actions(struct mlx5e_priv *priv,
1067                                  const struct tc_action *a, int namespace,
1068                                  struct mlx5e_tc_flow_parse_attr *parse_attr)
1069 {
1070         int nkeys, action_size, max_actions;
1071
1072         nkeys = tcf_pedit_nkeys(a);
1073         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
1074
1075         if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
1076                 max_actions = MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, max_modify_header_actions);
1077         else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
1078                 max_actions = MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, max_modify_header_actions);
1079
1080         /* can get up to crazingly 16 HW actions in 32 bits pedit SW key */
1081         max_actions = min(max_actions, nkeys * 16);
1082
1083         parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL);
1084         if (!parse_attr->mod_hdr_actions)
1085                 return -ENOMEM;
1086
1087         parse_attr->num_mod_hdr_actions = max_actions;
1088         return 0;
1089 }
1090
1091 static const struct pedit_headers zero_masks = {};
1092
1093 static int parse_tc_pedit_action(struct mlx5e_priv *priv,
1094                                  const struct tc_action *a, int namespace,
1095                                  struct mlx5e_tc_flow_parse_attr *parse_attr)
1096 {
1097         struct pedit_headers masks[__PEDIT_CMD_MAX], vals[__PEDIT_CMD_MAX], *cmd_masks;
1098         int nkeys, i, err = -EOPNOTSUPP;
1099         u32 mask, val, offset;
1100         u8 cmd, htype;
1101
1102         nkeys = tcf_pedit_nkeys(a);
1103
1104         memset(masks, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1105         memset(vals,  0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1106
1107         for (i = 0; i < nkeys; i++) {
1108                 htype = tcf_pedit_htype(a, i);
1109                 cmd = tcf_pedit_cmd(a, i);
1110                 err = -EOPNOTSUPP; /* can't be all optimistic */
1111
1112                 if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK) {
1113                         printk(KERN_WARNING "mlx5: legacy pedit isn't offloaded\n");
1114                         goto out_err;
1115                 }
1116
1117                 if (cmd != TCA_PEDIT_KEY_EX_CMD_SET && cmd != TCA_PEDIT_KEY_EX_CMD_ADD) {
1118                         printk(KERN_WARNING "mlx5: pedit cmd %d isn't offloaded\n", cmd);
1119                         goto out_err;
1120                 }
1121
1122                 mask = tcf_pedit_mask(a, i);
1123                 val = tcf_pedit_val(a, i);
1124                 offset = tcf_pedit_offset(a, i);
1125
1126                 err = set_pedit_val(htype, ~mask, val, offset, &masks[cmd], &vals[cmd]);
1127                 if (err)
1128                         goto out_err;
1129         }
1130
1131         err = alloc_mod_hdr_actions(priv, a, namespace, parse_attr);
1132         if (err)
1133                 goto out_err;
1134
1135         err = offload_pedit_fields(masks, vals, parse_attr);
1136         if (err < 0)
1137                 goto out_dealloc_parsed_actions;
1138
1139         for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
1140                 cmd_masks = &masks[cmd];
1141                 if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
1142                         printk(KERN_WARNING "mlx5: attempt to offload an unsupported field (cmd %d)\n",
1143                                cmd);
1144                         print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
1145                                        16, 1, cmd_masks, sizeof(zero_masks), true);
1146                         err = -EOPNOTSUPP;
1147                         goto out_dealloc_parsed_actions;
1148                 }
1149         }
1150
1151         return 0;
1152
1153 out_dealloc_parsed_actions:
1154         kfree(parse_attr->mod_hdr_actions);
1155 out_err:
1156         return err;
1157 }
1158
1159 static bool csum_offload_supported(struct mlx5e_priv *priv, u32 action, u32 update_flags)
1160 {
1161         u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP |
1162                          TCA_CSUM_UPDATE_FLAG_UDP;
1163
1164         /*  The HW recalcs checksums only if re-writing headers */
1165         if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) {
1166                 netdev_warn(priv->netdev,
1167                             "TC csum action is only offloaded with pedit\n");
1168                 return false;
1169         }
1170
1171         if (update_flags & ~prot_flags) {
1172                 netdev_warn(priv->netdev,
1173                             "can't offload TC csum action for some header/s - flags %#x\n",
1174                             update_flags);
1175                 return false;
1176         }
1177
1178         return true;
1179 }
1180
1181 static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1182                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
1183                                 struct mlx5e_tc_flow *flow)
1184 {
1185         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
1186         const struct tc_action *a;
1187         LIST_HEAD(actions);
1188         int err;
1189
1190         if (tc_no_actions(exts))
1191                 return -EINVAL;
1192
1193         attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
1194         attr->action = 0;
1195
1196         tcf_exts_to_list(exts, &actions);
1197         list_for_each_entry(a, &actions, list) {
1198                 if (is_tcf_gact_shot(a)) {
1199                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
1200                         if (MLX5_CAP_FLOWTABLE(priv->mdev,
1201                                                flow_table_properties_nic_receive.flow_counter))
1202                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
1203                         continue;
1204                 }
1205
1206                 if (is_tcf_pedit(a)) {
1207                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_KERNEL,
1208                                                     parse_attr);
1209                         if (err)
1210                                 return err;
1211
1212                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR |
1213                                         MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1214                         continue;
1215                 }
1216
1217                 if (is_tcf_csum(a)) {
1218                         if (csum_offload_supported(priv, attr->action,
1219                                                    tcf_csum_update_flags(a)))
1220                                 continue;
1221
1222                         return -EOPNOTSUPP;
1223                 }
1224
1225                 if (is_tcf_skbedit_mark(a)) {
1226                         u32 mark = tcf_skbedit_mark(a);
1227
1228                         if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
1229                                 netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
1230                                             mark);
1231                                 return -EINVAL;
1232                         }
1233
1234                         attr->flow_tag = mark;
1235                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1236                         continue;
1237                 }
1238
1239                 return -EINVAL;
1240         }
1241
1242         return 0;
1243 }
1244
1245 static inline int cmp_encap_info(struct ip_tunnel_key *a,
1246                                  struct ip_tunnel_key *b)
1247 {
1248         return memcmp(a, b, sizeof(*a));
1249 }
1250
1251 static inline int hash_encap_info(struct ip_tunnel_key *key)
1252 {
1253         return jhash(key, sizeof(*key), 0);
1254 }
1255
1256 static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
1257                                    struct net_device *mirred_dev,
1258                                    struct net_device **out_dev,
1259                                    struct flowi4 *fl4,
1260                                    struct neighbour **out_n,
1261                                    int *out_ttl)
1262 {
1263         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1264         struct rtable *rt;
1265         struct neighbour *n = NULL;
1266
1267 #if IS_ENABLED(CONFIG_INET)
1268         int ret;
1269
1270         rt = ip_route_output_key(dev_net(mirred_dev), fl4);
1271         ret = PTR_ERR_OR_ZERO(rt);
1272         if (ret)
1273                 return ret;
1274 #else
1275         return -EOPNOTSUPP;
1276 #endif
1277         /* if the egress device isn't on the same HW e-switch, we use the uplink */
1278         if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
1279                 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
1280         else
1281                 *out_dev = rt->dst.dev;
1282
1283         *out_ttl = ip4_dst_hoplimit(&rt->dst);
1284         n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
1285         ip_rt_put(rt);
1286         if (!n)
1287                 return -ENOMEM;
1288
1289         *out_n = n;
1290         return 0;
1291 }
1292
1293 static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
1294                                    struct net_device *mirred_dev,
1295                                    struct net_device **out_dev,
1296                                    struct flowi6 *fl6,
1297                                    struct neighbour **out_n,
1298                                    int *out_ttl)
1299 {
1300         struct neighbour *n = NULL;
1301         struct dst_entry *dst;
1302
1303 #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
1304         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1305         int ret;
1306
1307         dst = ip6_route_output(dev_net(mirred_dev), NULL, fl6);
1308         ret = dst->error;
1309         if (ret) {
1310                 dst_release(dst);
1311                 return ret;
1312         }
1313
1314         *out_ttl = ip6_dst_hoplimit(dst);
1315
1316         /* if the egress device isn't on the same HW e-switch, we use the uplink */
1317         if (!switchdev_port_same_parent_id(priv->netdev, dst->dev))
1318                 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
1319         else
1320                 *out_dev = dst->dev;
1321 #else
1322         return -EOPNOTSUPP;
1323 #endif
1324
1325         n = dst_neigh_lookup(dst, &fl6->daddr);
1326         dst_release(dst);
1327         if (!n)
1328                 return -ENOMEM;
1329
1330         *out_n = n;
1331         return 0;
1332 }
1333
1334 static void gen_vxlan_header_ipv4(struct net_device *out_dev,
1335                                   char buf[], int encap_size,
1336                                   unsigned char h_dest[ETH_ALEN],
1337                                   int ttl,
1338                                   __be32 daddr,
1339                                   __be32 saddr,
1340                                   __be16 udp_dst_port,
1341                                   __be32 vx_vni)
1342 {
1343         struct ethhdr *eth = (struct ethhdr *)buf;
1344         struct iphdr  *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
1345         struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
1346         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
1347
1348         memset(buf, 0, encap_size);
1349
1350         ether_addr_copy(eth->h_dest, h_dest);
1351         ether_addr_copy(eth->h_source, out_dev->dev_addr);
1352         eth->h_proto = htons(ETH_P_IP);
1353
1354         ip->daddr = daddr;
1355         ip->saddr = saddr;
1356
1357         ip->ttl = ttl;
1358         ip->protocol = IPPROTO_UDP;
1359         ip->version = 0x4;
1360         ip->ihl = 0x5;
1361
1362         udp->dest = udp_dst_port;
1363         vxh->vx_flags = VXLAN_HF_VNI;
1364         vxh->vx_vni = vxlan_vni_field(vx_vni);
1365 }
1366
1367 static void gen_vxlan_header_ipv6(struct net_device *out_dev,
1368                                   char buf[], int encap_size,
1369                                   unsigned char h_dest[ETH_ALEN],
1370                                   int ttl,
1371                                   struct in6_addr *daddr,
1372                                   struct in6_addr *saddr,
1373                                   __be16 udp_dst_port,
1374                                   __be32 vx_vni)
1375 {
1376         struct ethhdr *eth = (struct ethhdr *)buf;
1377         struct ipv6hdr *ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr));
1378         struct udphdr *udp = (struct udphdr *)((char *)ip6h + sizeof(struct ipv6hdr));
1379         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
1380
1381         memset(buf, 0, encap_size);
1382
1383         ether_addr_copy(eth->h_dest, h_dest);
1384         ether_addr_copy(eth->h_source, out_dev->dev_addr);
1385         eth->h_proto = htons(ETH_P_IPV6);
1386
1387         ip6_flow_hdr(ip6h, 0, 0);
1388         /* the HW fills up ipv6 payload len */
1389         ip6h->nexthdr     = IPPROTO_UDP;
1390         ip6h->hop_limit   = ttl;
1391         ip6h->daddr       = *daddr;
1392         ip6h->saddr       = *saddr;
1393
1394         udp->dest = udp_dst_port;
1395         vxh->vx_flags = VXLAN_HF_VNI;
1396         vxh->vx_vni = vxlan_vni_field(vx_vni);
1397 }
1398
1399 static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
1400                                           struct net_device *mirred_dev,
1401                                           struct mlx5e_encap_entry *e)
1402 {
1403         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
1404         int ipv4_encap_size = ETH_HLEN + sizeof(struct iphdr) + VXLAN_HLEN;
1405         struct ip_tunnel_key *tun_key = &e->tun_info.key;
1406         struct net_device *out_dev;
1407         struct neighbour *n = NULL;
1408         struct flowi4 fl4 = {};
1409         char *encap_header;
1410         int ttl, err;
1411         u8 nud_state;
1412
1413         if (max_encap_size < ipv4_encap_size) {
1414                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
1415                                ipv4_encap_size, max_encap_size);
1416                 return -EOPNOTSUPP;
1417         }
1418
1419         encap_header = kzalloc(ipv4_encap_size, GFP_KERNEL);
1420         if (!encap_header)
1421                 return -ENOMEM;
1422
1423         switch (e->tunnel_type) {
1424         case MLX5_HEADER_TYPE_VXLAN:
1425                 fl4.flowi4_proto = IPPROTO_UDP;
1426                 fl4.fl4_dport = tun_key->tp_dst;
1427                 break;
1428         default:
1429                 err = -EOPNOTSUPP;
1430                 goto out;
1431         }
1432         fl4.flowi4_tos = tun_key->tos;
1433         fl4.daddr = tun_key->u.ipv4.dst;
1434         fl4.saddr = tun_key->u.ipv4.src;
1435
1436         err = mlx5e_route_lookup_ipv4(priv, mirred_dev, &out_dev,
1437                                       &fl4, &n, &ttl);
1438         if (err)
1439                 goto out;
1440
1441         /* used by mlx5e_detach_encap to lookup a neigh hash table
1442          * entry in the neigh hash table when a user deletes a rule
1443          */
1444         e->m_neigh.dev = n->dev;
1445         e->m_neigh.family = n->ops->family;
1446         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
1447         e->out_dev = out_dev;
1448
1449         /* It's importent to add the neigh to the hash table before checking
1450          * the neigh validity state. So if we'll get a notification, in case the
1451          * neigh changes it's validity state, we would find the relevant neigh
1452          * in the hash.
1453          */
1454         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
1455         if (err)
1456                 goto out;
1457
1458         read_lock_bh(&n->lock);
1459         nud_state = n->nud_state;
1460         ether_addr_copy(e->h_dest, n->ha);
1461         read_unlock_bh(&n->lock);
1462
1463         switch (e->tunnel_type) {
1464         case MLX5_HEADER_TYPE_VXLAN:
1465                 gen_vxlan_header_ipv4(out_dev, encap_header,
1466                                       ipv4_encap_size, e->h_dest, ttl,
1467                                       fl4.daddr,
1468                                       fl4.saddr, tun_key->tp_dst,
1469                                       tunnel_id_to_key32(tun_key->tun_id));
1470                 break;
1471         default:
1472                 err = -EOPNOTSUPP;
1473                 goto destroy_neigh_entry;
1474         }
1475         e->encap_size = ipv4_encap_size;
1476         e->encap_header = encap_header;
1477
1478         if (!(nud_state & NUD_VALID)) {
1479                 neigh_event_send(n, NULL);
1480                 err = -EAGAIN;
1481                 goto out;
1482         }
1483
1484         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
1485                                ipv4_encap_size, encap_header, &e->encap_id);
1486         if (err)
1487                 goto destroy_neigh_entry;
1488
1489         e->flags |= MLX5_ENCAP_ENTRY_VALID;
1490         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
1491         neigh_release(n);
1492         return err;
1493
1494 destroy_neigh_entry:
1495         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1496 out:
1497         kfree(encap_header);
1498         if (n)
1499                 neigh_release(n);
1500         return err;
1501 }
1502
1503 static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
1504                                           struct net_device *mirred_dev,
1505                                           struct mlx5e_encap_entry *e)
1506 {
1507         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
1508         int ipv6_encap_size = ETH_HLEN + sizeof(struct ipv6hdr) + VXLAN_HLEN;
1509         struct ip_tunnel_key *tun_key = &e->tun_info.key;
1510         struct net_device *out_dev;
1511         struct neighbour *n = NULL;
1512         struct flowi6 fl6 = {};
1513         char *encap_header;
1514         int err, ttl = 0;
1515         u8 nud_state;
1516
1517         if (max_encap_size < ipv6_encap_size) {
1518                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
1519                                ipv6_encap_size, max_encap_size);
1520                 return -EOPNOTSUPP;
1521         }
1522
1523         encap_header = kzalloc(ipv6_encap_size, GFP_KERNEL);
1524         if (!encap_header)
1525                 return -ENOMEM;
1526
1527         switch (e->tunnel_type) {
1528         case MLX5_HEADER_TYPE_VXLAN:
1529                 fl6.flowi6_proto = IPPROTO_UDP;
1530                 fl6.fl6_dport = tun_key->tp_dst;
1531                 break;
1532         default:
1533                 err = -EOPNOTSUPP;
1534                 goto out;
1535         }
1536
1537         fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label);
1538         fl6.daddr = tun_key->u.ipv6.dst;
1539         fl6.saddr = tun_key->u.ipv6.src;
1540
1541         err = mlx5e_route_lookup_ipv6(priv, mirred_dev, &out_dev,
1542                                       &fl6, &n, &ttl);
1543         if (err)
1544                 goto out;
1545
1546         /* used by mlx5e_detach_encap to lookup a neigh hash table
1547          * entry in the neigh hash table when a user deletes a rule
1548          */
1549         e->m_neigh.dev = n->dev;
1550         e->m_neigh.family = n->ops->family;
1551         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
1552         e->out_dev = out_dev;
1553
1554         /* It's importent to add the neigh to the hash table before checking
1555          * the neigh validity state. So if we'll get a notification, in case the
1556          * neigh changes it's validity state, we would find the relevant neigh
1557          * in the hash.
1558          */
1559         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
1560         if (err)
1561                 goto out;
1562
1563         read_lock_bh(&n->lock);
1564         nud_state = n->nud_state;
1565         ether_addr_copy(e->h_dest, n->ha);
1566         read_unlock_bh(&n->lock);
1567
1568         switch (e->tunnel_type) {
1569         case MLX5_HEADER_TYPE_VXLAN:
1570                 gen_vxlan_header_ipv6(out_dev, encap_header,
1571                                       ipv6_encap_size, e->h_dest, ttl,
1572                                       &fl6.daddr,
1573                                       &fl6.saddr, tun_key->tp_dst,
1574                                       tunnel_id_to_key32(tun_key->tun_id));
1575                 break;
1576         default:
1577                 err = -EOPNOTSUPP;
1578                 goto destroy_neigh_entry;
1579         }
1580
1581         e->encap_size = ipv6_encap_size;
1582         e->encap_header = encap_header;
1583
1584         if (!(nud_state & NUD_VALID)) {
1585                 neigh_event_send(n, NULL);
1586                 err = -EAGAIN;
1587                 goto out;
1588         }
1589
1590         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
1591                                ipv6_encap_size, encap_header, &e->encap_id);
1592         if (err)
1593                 goto destroy_neigh_entry;
1594
1595         e->flags |= MLX5_ENCAP_ENTRY_VALID;
1596         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
1597         neigh_release(n);
1598         return err;
1599
1600 destroy_neigh_entry:
1601         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1602 out:
1603         kfree(encap_header);
1604         if (n)
1605                 neigh_release(n);
1606         return err;
1607 }
1608
1609 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
1610                               struct ip_tunnel_info *tun_info,
1611                               struct net_device *mirred_dev,
1612                               struct net_device **encap_dev,
1613                               struct mlx5e_tc_flow *flow)
1614 {
1615         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1616         struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw);
1617         unsigned short family = ip_tunnel_info_af(tun_info);
1618         struct mlx5e_priv *up_priv = netdev_priv(up_dev);
1619         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1620         struct ip_tunnel_key *key = &tun_info->key;
1621         struct mlx5e_encap_entry *e;
1622         int tunnel_type, err = 0;
1623         uintptr_t hash_key;
1624         bool found = false;
1625
1626         /* udp dst port must be set */
1627         if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
1628                 goto vxlan_encap_offload_err;
1629
1630         /* setting udp src port isn't supported */
1631         if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
1632 vxlan_encap_offload_err:
1633                 netdev_warn(priv->netdev,
1634                             "must set udp dst port and not set udp src port\n");
1635                 return -EOPNOTSUPP;
1636         }
1637
1638         if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->tp_dst)) &&
1639             MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
1640                 tunnel_type = MLX5_HEADER_TYPE_VXLAN;
1641         } else {
1642                 netdev_warn(priv->netdev,
1643                             "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
1644                 return -EOPNOTSUPP;
1645         }
1646
1647         hash_key = hash_encap_info(key);
1648
1649         hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
1650                                    encap_hlist, hash_key) {
1651                 if (!cmp_encap_info(&e->tun_info.key, key)) {
1652                         found = true;
1653                         break;
1654                 }
1655         }
1656
1657         if (found)
1658                 goto attach_flow;
1659
1660         e = kzalloc(sizeof(*e), GFP_KERNEL);
1661         if (!e)
1662                 return -ENOMEM;
1663
1664         e->tun_info = *tun_info;
1665         e->tunnel_type = tunnel_type;
1666         INIT_LIST_HEAD(&e->flows);
1667
1668         if (family == AF_INET)
1669                 err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e);
1670         else if (family == AF_INET6)
1671                 err = mlx5e_create_encap_header_ipv6(priv, mirred_dev, e);
1672
1673         if (err && err != -EAGAIN)
1674                 goto out_err;
1675
1676         hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
1677
1678 attach_flow:
1679         list_add(&flow->encap, &e->flows);
1680         *encap_dev = e->out_dev;
1681         if (e->flags & MLX5_ENCAP_ENTRY_VALID)
1682                 attr->encap_id = e->encap_id;
1683
1684         return err;
1685
1686 out_err:
1687         kfree(e);
1688         return err;
1689 }
1690
1691 static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1692                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
1693                                 struct mlx5e_tc_flow *flow)
1694 {
1695         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1696         struct mlx5e_rep_priv *rpriv = priv->ppriv;
1697         struct ip_tunnel_info *info = NULL;
1698         const struct tc_action *a;
1699         LIST_HEAD(actions);
1700         bool encap = false;
1701         int err = 0;
1702
1703         if (tc_no_actions(exts))
1704                 return -EINVAL;
1705
1706         memset(attr, 0, sizeof(*attr));
1707         attr->in_rep = rpriv->rep;
1708
1709         tcf_exts_to_list(exts, &actions);
1710         list_for_each_entry(a, &actions, list) {
1711                 if (is_tcf_gact_shot(a)) {
1712                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
1713                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1714                         continue;
1715                 }
1716
1717                 if (is_tcf_pedit(a)) {
1718                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_FDB,
1719                                                     parse_attr);
1720                         if (err)
1721                                 return err;
1722
1723                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
1724                         continue;
1725                 }
1726
1727                 if (is_tcf_csum(a)) {
1728                         if (csum_offload_supported(priv, attr->action,
1729                                                    tcf_csum_update_flags(a)))
1730                                 continue;
1731
1732                         return -EOPNOTSUPP;
1733                 }
1734
1735                 if (is_tcf_mirred_egress_redirect(a)) {
1736                         int ifindex = tcf_mirred_ifindex(a);
1737                         struct net_device *out_dev, *encap_dev = NULL;
1738                         struct mlx5e_priv *out_priv;
1739
1740                         out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
1741
1742                         if (switchdev_port_same_parent_id(priv->netdev,
1743                                                           out_dev)) {
1744                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1745                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1746                                 out_priv = netdev_priv(out_dev);
1747                                 rpriv = out_priv->ppriv;
1748                                 attr->out_rep = rpriv->rep;
1749                         } else if (encap) {
1750                                 err = mlx5e_attach_encap(priv, info,
1751                                                          out_dev, &encap_dev, flow);
1752                                 if (err && err != -EAGAIN)
1753                                         return err;
1754                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
1755                                         MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1756                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1757                                 out_priv = netdev_priv(encap_dev);
1758                                 rpriv = out_priv->ppriv;
1759                                 attr->out_rep = rpriv->rep;
1760                                 attr->parse_attr = parse_attr;
1761                         } else {
1762                                 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
1763                                        priv->netdev->name, out_dev->name);
1764                                 return -EINVAL;
1765                         }
1766                         continue;
1767                 }
1768
1769                 if (is_tcf_tunnel_set(a)) {
1770                         info = tcf_tunnel_info(a);
1771                         if (info)
1772                                 encap = true;
1773                         else
1774                                 return -EOPNOTSUPP;
1775                         continue;
1776                 }
1777
1778                 if (is_tcf_vlan(a)) {
1779                         if (tcf_vlan_action(a) == TCA_VLAN_ACT_POP) {
1780                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
1781                         } else if (tcf_vlan_action(a) == TCA_VLAN_ACT_PUSH) {
1782                                 if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
1783                                         return -EOPNOTSUPP;
1784
1785                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
1786                                 attr->vlan = tcf_vlan_push_vid(a);
1787                         } else { /* action is TCA_VLAN_ACT_MODIFY */
1788                                 return -EOPNOTSUPP;
1789                         }
1790                         continue;
1791                 }
1792
1793                 if (is_tcf_tunnel_release(a)) {
1794                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
1795                         continue;
1796                 }
1797
1798                 return -EINVAL;
1799         }
1800         return err;
1801 }
1802
1803 int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
1804                            struct tc_cls_flower_offload *f)
1805 {
1806         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1807         struct mlx5e_tc_flow_parse_attr *parse_attr;
1808         struct mlx5e_tc_table *tc = &priv->fs.tc;
1809         struct mlx5e_tc_flow *flow;
1810         int attr_size, err = 0;
1811         u8 flow_flags = 0;
1812
1813         if (esw && esw->mode == SRIOV_OFFLOADS) {
1814                 flow_flags = MLX5E_TC_FLOW_ESWITCH;
1815                 attr_size  = sizeof(struct mlx5_esw_flow_attr);
1816         } else {
1817                 flow_flags = MLX5E_TC_FLOW_NIC;
1818                 attr_size  = sizeof(struct mlx5_nic_flow_attr);
1819         }
1820
1821         flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
1822         parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
1823         if (!parse_attr || !flow) {
1824                 err = -ENOMEM;
1825                 goto err_free;
1826         }
1827
1828         flow->cookie = f->cookie;
1829         flow->flags = flow_flags;
1830
1831         err = parse_cls_flower(priv, flow, &parse_attr->spec, f);
1832         if (err < 0)
1833                 goto err_free;
1834
1835         if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
1836                 err = parse_tc_fdb_actions(priv, f->exts, parse_attr, flow);
1837                 if (err < 0)
1838                         goto err_handle_encap_flow;
1839                 flow->rule = mlx5e_tc_add_fdb_flow(priv, parse_attr, flow);
1840         } else {
1841                 err = parse_tc_nic_actions(priv, f->exts, parse_attr, flow);
1842                 if (err < 0)
1843                         goto err_free;
1844                 flow->rule = mlx5e_tc_add_nic_flow(priv, parse_attr, flow);
1845         }
1846
1847         if (IS_ERR(flow->rule)) {
1848                 err = PTR_ERR(flow->rule);
1849                 goto err_free;
1850         }
1851
1852         flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
1853         err = rhashtable_insert_fast(&tc->ht, &flow->node,
1854                                      tc->ht_params);
1855         if (err)
1856                 goto err_del_rule;
1857
1858         if (flow->flags & MLX5E_TC_FLOW_ESWITCH &&
1859             !(flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP))
1860                 kvfree(parse_attr);
1861         return err;
1862
1863 err_del_rule:
1864         mlx5e_tc_del_flow(priv, flow);
1865
1866 err_handle_encap_flow:
1867         if (err == -EAGAIN) {
1868                 err = rhashtable_insert_fast(&tc->ht, &flow->node,
1869                                              tc->ht_params);
1870                 if (err)
1871                         mlx5e_tc_del_flow(priv, flow);
1872                 else
1873                         return 0;
1874         }
1875
1876 err_free:
1877         kvfree(parse_attr);
1878         kfree(flow);
1879         return err;
1880 }
1881
1882 int mlx5e_delete_flower(struct mlx5e_priv *priv,
1883                         struct tc_cls_flower_offload *f)
1884 {
1885         struct mlx5e_tc_flow *flow;
1886         struct mlx5e_tc_table *tc = &priv->fs.tc;
1887
1888         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1889                                       tc->ht_params);
1890         if (!flow)
1891                 return -EINVAL;
1892
1893         rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
1894
1895         mlx5e_tc_del_flow(priv, flow);
1896
1897         kfree(flow);
1898
1899         return 0;
1900 }
1901
1902 int mlx5e_stats_flower(struct mlx5e_priv *priv,
1903                        struct tc_cls_flower_offload *f)
1904 {
1905         struct mlx5e_tc_table *tc = &priv->fs.tc;
1906         struct mlx5e_tc_flow *flow;
1907         struct mlx5_fc *counter;
1908         u64 bytes;
1909         u64 packets;
1910         u64 lastuse;
1911
1912         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1913                                       tc->ht_params);
1914         if (!flow)
1915                 return -EINVAL;
1916
1917         if (!(flow->flags & MLX5E_TC_FLOW_OFFLOADED))
1918                 return 0;
1919
1920         counter = mlx5_flow_rule_counter(flow->rule);
1921         if (!counter)
1922                 return 0;
1923
1924         mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
1925
1926         tcf_exts_stats_update(f->exts, bytes, packets, lastuse);
1927
1928         return 0;
1929 }
1930
1931 static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
1932         .head_offset = offsetof(struct mlx5e_tc_flow, node),
1933         .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
1934         .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
1935         .automatic_shrinking = true,
1936 };
1937
1938 int mlx5e_tc_init(struct mlx5e_priv *priv)
1939 {
1940         struct mlx5e_tc_table *tc = &priv->fs.tc;
1941
1942         tc->ht_params = mlx5e_tc_flow_ht_params;
1943         return rhashtable_init(&tc->ht, &tc->ht_params);
1944 }
1945
1946 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
1947 {
1948         struct mlx5e_tc_flow *flow = ptr;
1949         struct mlx5e_priv *priv = arg;
1950
1951         mlx5e_tc_del_flow(priv, flow);
1952         kfree(flow);
1953 }
1954
1955 void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
1956 {
1957         struct mlx5e_tc_table *tc = &priv->fs.tc;
1958
1959         rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
1960
1961         if (!IS_ERR_OR_NULL(tc->t)) {
1962                 mlx5_destroy_flow_table(tc->t);
1963                 tc->t = NULL;
1964         }
1965 }