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 = mlx5_modify_header_alloc(dev, MLX5_FLOW_NAMESPACE_KERNEL,
 255                                                parse_attr->num_mod_hdr_actions,
 256                                                parse_attr->mod_hdr_actions,
 257                                                &attr->mod_hdr_id);
 258                 flow_act.modify_id = attr->mod_hdr_id;
 259                 kfree(parse_attr->mod_hdr_actions);
 260                 if (err) {
 261                         rule = ERR_PTR(err);
 262                         goto err_create_mod_hdr_id;
 263                 }
 264         }
 265
 266         if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
 267                 priv->fs.tc.t =
 268                         mlx5_create_auto_grouped_flow_table(priv->fs.ns,
 269                                                             MLX5E_TC_PRIO,
 270                                                             MLX5E_TC_TABLE_NUM_ENTRIES,
 271                                                             MLX5E_TC_TABLE_NUM_GROUPS,
 272                                                             0, 0);
 273                 if (IS_ERR(priv->fs.tc.t)) {
 274                         netdev_err(priv->netdev,
 275                                    "Failed to create tc offload table\n");
 276                         rule = ERR_CAST(priv->fs.tc.t);
 277                         goto err_create_ft;
 278                 }
 279
 280                 table_created = true;
 281         }
 282
 283         parse_attr->spec.match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
 284         rule = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec,
 285                                    &flow_act, &dest, 1);
 286
 287         if (IS_ERR(rule))
 288                 goto err_add_rule;
 289
 290         return rule;
 291
 292 err_add_rule:
 293         if (table_created) {
 294                 mlx5_destroy_flow_table(priv->fs.tc.t);
 295                 priv->fs.tc.t = NULL;
 296         }
 297 err_create_ft:
 298         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 299                 mlx5_modify_header_dealloc(priv->mdev,
 300                                            attr->mod_hdr_id);
 301 err_create_mod_hdr_id:
 302         mlx5_fc_destroy(dev, counter);
 303
 304         return rule;
 305 }
 306
 307 static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
 308                                   struct mlx5e_tc_flow *flow)
 309 {
 310         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
 311         struct mlx5_fc *counter = NULL;
 312
 313         counter = mlx5_flow_rule_counter(flow->rule);
 314         mlx5_del_flow_rules(flow->rule);
 315         mlx5_fc_destroy(priv->mdev, counter);
 316
 317         if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
 318                 mlx5_destroy_flow_table(priv->fs.tc.t);
 319                 priv->fs.tc.t = NULL;
 320         }
 321
 322         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 323                 mlx5_modify_header_dealloc(priv->mdev,
 324                                            attr->mod_hdr_id);
 325 }
 326
 327 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
 328                                struct mlx5e_tc_flow *flow);
 329
 330 static struct mlx5_flow_handle *
 331 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
 332                       struct mlx5e_tc_flow_parse_attr *parse_attr,
 333                       struct mlx5e_tc_flow *flow)
 334 {
 335         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 336         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
 337         struct mlx5_flow_handle *rule;
 338         int err;
 339
 340         err = mlx5_eswitch_add_vlan_action(esw, attr);
 341         if (err) {
 342                 rule = ERR_PTR(err);
 343                 goto err_add_vlan;
 344         }
 345
 346         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
 347                 err = mlx5_modify_header_alloc(priv->mdev, MLX5_FLOW_NAMESPACE_FDB,
 348                                                parse_attr->num_mod_hdr_actions,
 349                                                parse_attr->mod_hdr_actions,
 350                                                &attr->mod_hdr_id);
 351                 kfree(parse_attr->mod_hdr_actions);
 352                 if (err) {
 353                         rule = ERR_PTR(err);
 354                         goto err_mod_hdr;
 355                 }
 356         }
 357
 358         rule = mlx5_eswitch_add_offloaded_rule(esw, &parse_attr->spec, attr);
 359         if (IS_ERR(rule))
 360                 goto err_add_rule;
 361
 362         return rule;
 363
 364 err_add_rule:
 365         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 366                 mlx5_modify_header_dealloc(priv->mdev,
 367                                            attr->mod_hdr_id);
 368 err_mod_hdr:
 369         mlx5_eswitch_del_vlan_action(esw, attr);
 370 err_add_vlan:
 371         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
 372                 mlx5e_detach_encap(priv, flow);
 373         return rule;
 374 }
 375
 376 static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
 377                                   struct mlx5e_tc_flow *flow)
 378 {
 379         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 380         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
 381
 382         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
 383                 flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
 384                 mlx5_eswitch_del_offloaded_rule(esw, flow->rule, attr);
 385         }
 386
 387         mlx5_eswitch_del_vlan_action(esw, attr);
 388
 389         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP) {
 390                 mlx5e_detach_encap(priv, flow);
 391                 kvfree(attr->parse_attr);
 392         }
 393
 394         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 395                 mlx5_modify_header_dealloc(priv->mdev,
 396                                            attr->mod_hdr_id);
 397 }
 398
 399 void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
 400                               struct mlx5e_encap_entry *e)
 401 {
 402         struct mlx5e_tc_flow *flow;
 403         int err;
 404
 405         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
 406                                e->encap_size, e->encap_header,
 407                                &e->encap_id);
 408         if (err) {
 409                 mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %d\n",
 410                                err);
 411                 return;
 412         }
 413         e->flags |= MLX5_ENCAP_ENTRY_VALID;
 414         mlx5e_rep_queue_neigh_stats_work(priv);
 415
 416         list_for_each_entry(flow, &e->flows, encap) {
 417                 flow->esw_attr->encap_id = e->encap_id;
 418                 flow->rule = mlx5e_tc_add_fdb_flow(priv,
 419                                                    flow->esw_attr->parse_attr,
 420                                                    flow);
 421                 if (IS_ERR(flow->rule)) {
 422                         err = PTR_ERR(flow->rule);
 423                         mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n",
 424                                        err);
 425                         continue;
 426                 }
 427                 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
 428         }
 429 }
 430
 431 void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
 432                               struct mlx5e_encap_entry *e)
 433 {
 434         struct mlx5e_tc_flow *flow;
 435         struct mlx5_fc *counter;
 436
 437         list_for_each_entry(flow, &e->flows, encap) {
 438                 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
 439                         flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
 440                         counter = mlx5_flow_rule_counter(flow->rule);
 441                         mlx5_del_flow_rules(flow->rule);
 442                         mlx5_fc_destroy(priv->mdev, counter);
 443                 }
 444         }
 445
 446         if (e->flags & MLX5_ENCAP_ENTRY_VALID) {
 447                 e->flags &= ~MLX5_ENCAP_ENTRY_VALID;
 448                 mlx5_encap_dealloc(priv->mdev, e->encap_id);
 449         }
 450 }
 451
 452 void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
 453 {
 454         struct mlx5e_neigh *m_neigh = &nhe->m_neigh;
 455         u64 bytes, packets, lastuse = 0;
 456         struct mlx5e_tc_flow *flow;
 457         struct mlx5e_encap_entry *e;
 458         struct mlx5_fc *counter;
 459         struct neigh_table *tbl;
 460         bool neigh_used = false;
 461         struct neighbour *n;
 462
 463         if (m_neigh->family == AF_INET)
 464                 tbl = &arp_tbl;
 465 #if IS_ENABLED(CONFIG_IPV6)
 466         else if (m_neigh->family == AF_INET6)
 467                 tbl = ipv6_stub->nd_tbl;
 468 #endif
 469         else
 470                 return;
 471
 472         list_for_each_entry(e, &nhe->encap_list, encap_list) {
 473                 if (!(e->flags & MLX5_ENCAP_ENTRY_VALID))
 474                         continue;
 475                 list_for_each_entry(flow, &e->flows, encap) {
 476                         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
 477                                 counter = mlx5_flow_rule_counter(flow->rule);
 478                                 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
 479                                 if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) {
 480                                         neigh_used = true;
 481                                         break;
 482                                 }
 483                         }
 484                 }
 485         }
 486
 487         if (neigh_used) {
 488                 nhe->reported_lastuse = jiffies;
 489
 490                 /* find the relevant neigh according to the cached device and
 491                  * dst ip pair
 492                  */
 493                 n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev);
 494                 if (!n) {
 495                         WARN(1, "The neighbour already freed\n");
 496                         return;
 497                 }
 498
 499                 neigh_event_send(n, NULL);
 500                 neigh_release(n);
 501         }
 502 }
 503
 504 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
 505                                struct mlx5e_tc_flow *flow)
 506 {
 507         struct list_head *next = flow->encap.next;
 508
 509         list_del(&flow->encap);
 510         if (list_empty(next)) {
 511                 struct mlx5e_encap_entry *e;
 512
 513                 e = list_entry(next, struct mlx5e_encap_entry, flows);
 514                 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
 515
 516                 if (e->flags & MLX5_ENCAP_ENTRY_VALID)
 517                         mlx5_encap_dealloc(priv->mdev, e->encap_id);
 518
 519                 hash_del_rcu(&e->encap_hlist);
 520                 kfree(e->encap_header);
 521                 kfree(e);
 522         }
 523 }
 524
 525 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
 526                               struct mlx5e_tc_flow *flow)
 527 {
 528         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
 529                 mlx5e_tc_del_fdb_flow(priv, flow);
 530         else
 531                 mlx5e_tc_del_nic_flow(priv, flow);
 532 }
 533
 534 static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
 535                              struct tc_cls_flower_offload *f)
 536 {
 537         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 538                                        outer_headers);
 539         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 540                                        outer_headers);
 541         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 542                                     misc_parameters);
 543         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 544                                     misc_parameters);
 545
 546         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
 547         MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
 548
 549         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
 550                 struct flow_dissector_key_keyid *key =
 551                         skb_flow_dissector_target(f->dissector,
 552                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
 553                                                   f->key);
 554                 struct flow_dissector_key_keyid *mask =
 555                         skb_flow_dissector_target(f->dissector,
 556                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
 557                                                   f->mask);
 558                 MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
 559                          be32_to_cpu(mask->keyid));
 560                 MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
 561                          be32_to_cpu(key->keyid));
 562         }
 563 }
 564
 565 static int parse_tunnel_attr(struct mlx5e_priv *priv,
 566                              struct mlx5_flow_spec *spec,
 567                              struct tc_cls_flower_offload *f)
 568 {
 569         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 570                                        outer_headers);
 571         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 572                                        outer_headers);
 573
 574         struct flow_dissector_key_control *enc_control =
 575                 skb_flow_dissector_target(f->dissector,
 576                                           FLOW_DISSECTOR_KEY_ENC_CONTROL,
 577                                           f->key);
 578
 579         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
 580                 struct flow_dissector_key_ports *key =
 581                         skb_flow_dissector_target(f->dissector,
 582                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
 583                                                   f->key);
 584                 struct flow_dissector_key_ports *mask =
 585                         skb_flow_dissector_target(f->dissector,
 586                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
 587                                                   f->mask);
 588                 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 589                 struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw);
 590                 struct mlx5e_priv *up_priv = netdev_priv(up_dev);
 591
 592                 /* Full udp dst port must be given */
 593                 if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
 594                         goto vxlan_match_offload_err;
 595
 596                 if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->dst)) &&
 597                     MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
 598                         parse_vxlan_attr(spec, f);
 599                 else {
 600                         netdev_warn(priv->netdev,
 601                                     "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
 602                         return -EOPNOTSUPP;
 603                 }
 604
 605                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 606                          udp_dport, ntohs(mask->dst));
 607                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 608                          udp_dport, ntohs(key->dst));
 609
 610                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 611                          udp_sport, ntohs(mask->src));
 612                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 613                          udp_sport, ntohs(key->src));
 614         } else { /* udp dst port must be given */
 615 vxlan_match_offload_err:
 616                 netdev_warn(priv->netdev,
 617                             "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
 618                 return -EOPNOTSUPP;
 619         }
 620
 621         if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
 622                 struct flow_dissector_key_ipv4_addrs *key =
 623                         skb_flow_dissector_target(f->dissector,
 624                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
 625                                                   f->key);
 626                 struct flow_dissector_key_ipv4_addrs *mask =
 627                         skb_flow_dissector_target(f->dissector,
 628                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
 629                                                   f->mask);
 630                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 631                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
 632                          ntohl(mask->src));
 633                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 634                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
 635                          ntohl(key->src));
 636
 637                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 638                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
 639                          ntohl(mask->dst));
 640                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 641                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
 642                          ntohl(key->dst));
 643
 644                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
 645                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
 646         } else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
 647                 struct flow_dissector_key_ipv6_addrs *key =
 648                         skb_flow_dissector_target(f->dissector,
 649                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
 650                                                   f->key);
 651                 struct flow_dissector_key_ipv6_addrs *mask =
 652                         skb_flow_dissector_target(f->dissector,
 653                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
 654                                                   f->mask);
 655
 656                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 657                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 658                        &mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 659                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 660                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 661                        &key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 662
 663                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 664                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 665                        &mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 666                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 667                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 668                        &key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 669
 670                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
 671                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6);
 672         }
 673
 674         /* Enforce DMAC when offloading incoming tunneled flows.
 675          * Flow counters require a match on the DMAC.
 676          */
 677         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
 678         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
 679         ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 680                                      dmac_47_16), priv->netdev->dev_addr);
 681
 682         /* let software handle IP fragments */
 683         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
 684         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
 685
 686         return 0;
 687 }
 688
 689 static int __parse_cls_flower(struct mlx5e_priv *priv,
 690                               struct mlx5_flow_spec *spec,
 691                               struct tc_cls_flower_offload *f,
 692                               u8 *min_inline)
 693 {
 694         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 695                                        outer_headers);
 696         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 697                                        outer_headers);
 698         u16 addr_type = 0;
 699         u8 ip_proto = 0;
 700
 701         *min_inline = MLX5_INLINE_MODE_L2;
 702
 703         if (f->dissector->used_keys &
 704             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
 705               BIT(FLOW_DISSECTOR_KEY_BASIC) |
 706               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
 707               BIT(FLOW_DISSECTOR_KEY_VLAN) |
 708               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
 709               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
 710               BIT(FLOW_DISSECTOR_KEY_PORTS) |
 711               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
 712               BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
 713               BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
 714               BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
 715               BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
 716               BIT(FLOW_DISSECTOR_KEY_TCP) |
 717               BIT(FLOW_DISSECTOR_KEY_IP))) {
 718                 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
 719                             f->dissector->used_keys);
 720                 return -EOPNOTSUPP;
 721         }
 722
 723         if ((dissector_uses_key(f->dissector,
 724                                 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
 725              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
 726              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
 727             dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
 728                 struct flow_dissector_key_control *key =
 729                         skb_flow_dissector_target(f->dissector,
 730                                                   FLOW_DISSECTOR_KEY_ENC_CONTROL,
 731                                                   f->key);
 732                 switch (key->addr_type) {
 733                 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
 734                 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
 735                         if (parse_tunnel_attr(priv, spec, f))
 736                                 return -EOPNOTSUPP;
 737                         break;
 738                 default:
 739                         return -EOPNOTSUPP;
 740                 }
 741
 742                 /* In decap flow, header pointers should point to the inner
 743                  * headers, outer header were already set by parse_tunnel_attr
 744                  */
 745                 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 746                                          inner_headers);
 747                 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 748                                          inner_headers);
 749         }
 750
 751         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
 752                 struct flow_dissector_key_control *key =
 753                         skb_flow_dissector_target(f->dissector,
 754                                                   FLOW_DISSECTOR_KEY_CONTROL,
 755                                                   f->key);
 756
 757                 struct flow_dissector_key_control *mask =
 758                         skb_flow_dissector_target(f->dissector,
 759                                                   FLOW_DISSECTOR_KEY_CONTROL,
 760                                                   f->mask);
 761                 addr_type = key->addr_type;
 762
 763                 if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
 764                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
 765                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
 766                                  key->flags & FLOW_DIS_IS_FRAGMENT);
 767
 768                         /* the HW doesn't need L3 inline to match on frag=no */
 769                         if (key->flags & FLOW_DIS_IS_FRAGMENT)
 770                                 *min_inline = MLX5_INLINE_MODE_IP;
 771                 }
 772         }
 773
 774         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
 775                 struct flow_dissector_key_basic *key =
 776                         skb_flow_dissector_target(f->dissector,
 777                                                   FLOW_DISSECTOR_KEY_BASIC,
 778                                                   f->key);
 779                 struct flow_dissector_key_basic *mask =
 780                         skb_flow_dissector_target(f->dissector,
 781                                                   FLOW_DISSECTOR_KEY_BASIC,
 782                                                   f->mask);
 783                 ip_proto = key->ip_proto;
 784
 785                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
 786                          ntohs(mask->n_proto));
 787                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
 788                          ntohs(key->n_proto));
 789
 790                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
 791                          mask->ip_proto);
 792                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
 793                          key->ip_proto);
 794
 795                 if (mask->ip_proto)
 796                         *min_inline = MLX5_INLINE_MODE_IP;
 797         }
 798
 799         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
 800                 struct flow_dissector_key_eth_addrs *key =
 801                         skb_flow_dissector_target(f->dissector,
 802                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
 803                                                   f->key);
 804                 struct flow_dissector_key_eth_addrs *mask =
 805                         skb_flow_dissector_target(f->dissector,
 806                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
 807                                                   f->mask);
 808
 809                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 810                                              dmac_47_16),
 811                                 mask->dst);
 812                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 813                                              dmac_47_16),
 814                                 key->dst);
 815
 816                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 817                                              smac_47_16),
 818                                 mask->src);
 819                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 820                                              smac_47_16),
 821                                 key->src);
 822         }
 823
 824         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
 825                 struct flow_dissector_key_vlan *key =
 826                         skb_flow_dissector_target(f->dissector,
 827                                                   FLOW_DISSECTOR_KEY_VLAN,
 828                                                   f->key);
 829                 struct flow_dissector_key_vlan *mask =
 830                         skb_flow_dissector_target(f->dissector,
 831                                                   FLOW_DISSECTOR_KEY_VLAN,
 832                                                   f->mask);
 833                 if (mask->vlan_id || mask->vlan_priority) {
 834                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
 835                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1);
 836
 837                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
 838                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
 839
 840                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
 841                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
 842                 }
 843         }
 844
 845         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
 846                 struct flow_dissector_key_ipv4_addrs *key =
 847                         skb_flow_dissector_target(f->dissector,
 848                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
 849                                                   f->key);
 850                 struct flow_dissector_key_ipv4_addrs *mask =
 851                         skb_flow_dissector_target(f->dissector,
 852                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
 853                                                   f->mask);
 854
 855                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 856                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
 857                        &mask->src, sizeof(mask->src));
 858                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 859                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
 860                        &key->src, sizeof(key->src));
 861                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 862                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
 863                        &mask->dst, sizeof(mask->dst));
 864                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 865                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
 866                        &key->dst, sizeof(key->dst));
 867
 868                 if (mask->src || mask->dst)
 869                         *min_inline = MLX5_INLINE_MODE_IP;
 870         }
 871
 872         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
 873                 struct flow_dissector_key_ipv6_addrs *key =
 874                         skb_flow_dissector_target(f->dissector,
 875                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
 876                                                   f->key);
 877                 struct flow_dissector_key_ipv6_addrs *mask =
 878                         skb_flow_dissector_target(f->dissector,
 879                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
 880                                                   f->mask);
 881
 882                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 883                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 884                        &mask->src, sizeof(mask->src));
 885                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 886                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 887                        &key->src, sizeof(key->src));
 888
 889                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 890                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 891                        &mask->dst, sizeof(mask->dst));
 892                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 893                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 894                        &key->dst, sizeof(key->dst));
 895
 896                 if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
 897                     ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
 898                         *min_inline = MLX5_INLINE_MODE_IP;
 899         }
 900
 901         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
 902                 struct flow_dissector_key_ports *key =
 903                         skb_flow_dissector_target(f->dissector,
 904                                                   FLOW_DISSECTOR_KEY_PORTS,
 905                                                   f->key);
 906                 struct flow_dissector_key_ports *mask =
 907                         skb_flow_dissector_target(f->dissector,
 908                                                   FLOW_DISSECTOR_KEY_PORTS,
 909                                                   f->mask);
 910                 switch (ip_proto) {
 911                 case IPPROTO_TCP:
 912                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 913                                  tcp_sport, ntohs(mask->src));
 914                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 915                                  tcp_sport, ntohs(key->src));
 916
 917                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 918                                  tcp_dport, ntohs(mask->dst));
 919                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 920                                  tcp_dport, ntohs(key->dst));
 921                         break;
 922
 923                 case IPPROTO_UDP:
 924                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 925                                  udp_sport, ntohs(mask->src));
 926                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 927                                  udp_sport, ntohs(key->src));
 928
 929                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 930                                  udp_dport, ntohs(mask->dst));
 931                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 932                                  udp_dport, ntohs(key->dst));
 933                         break;
 934                 default:
 935                         netdev_err(priv->netdev,
 936                                    "Only UDP and TCP transport are supported\n");
 937                         return -EINVAL;
 938                 }
 939
 940                 if (mask->src || mask->dst)
 941                         *min_inline = MLX5_INLINE_MODE_TCP_UDP;
 942         }
 943
 944         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_IP)) {
 945                 struct flow_dissector_key_ip *key =
 946                         skb_flow_dissector_target(f->dissector,
 947                                                   FLOW_DISSECTOR_KEY_IP,
 948                                                   f->key);
 949                 struct flow_dissector_key_ip *mask =
 950                         skb_flow_dissector_target(f->dissector,
 951                                                   FLOW_DISSECTOR_KEY_IP,
 952                                                   f->mask);
 953
 954                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, mask->tos & 0x3);
 955                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, key->tos & 0x3);
 956
 957                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, mask->tos >> 2);
 958                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, key->tos  >> 2);
 959
 960                 if (mask->tos)
 961                         *min_inline = MLX5_INLINE_MODE_IP;
 962
 963                 if (mask->ttl) /* currently not supported */
 964                         return -EOPNOTSUPP;
 965         }
 966
 967         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_TCP)) {
 968                 struct flow_dissector_key_tcp *key =
 969                         skb_flow_dissector_target(f->dissector,
 970                                                   FLOW_DISSECTOR_KEY_TCP,
 971                                                   f->key);
 972                 struct flow_dissector_key_tcp *mask =
 973                         skb_flow_dissector_target(f->dissector,
 974                                                   FLOW_DISSECTOR_KEY_TCP,
 975                                                   f->mask);
 976
 977                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
 978                          ntohs(mask->flags));
 979                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
 980                          ntohs(key->flags));
 981
 982                 if (mask->flags)
 983                         *min_inline = MLX5_INLINE_MODE_TCP_UDP;
 984         }
 985
 986         return 0;
 987 }
 988
 989 static int parse_cls_flower(struct mlx5e_priv *priv,
 990                             struct mlx5e_tc_flow *flow,
 991                             struct mlx5_flow_spec *spec,
 992                             struct tc_cls_flower_offload *f)
 993 {
 994         struct mlx5_core_dev *dev = priv->mdev;
 995         struct mlx5_eswitch *esw = dev->priv.eswitch;
 996         struct mlx5e_rep_priv *rpriv = priv->ppriv;
 997         struct mlx5_eswitch_rep *rep;
 998         u8 min_inline;
 999         int err;
1000
1001         err = __parse_cls_flower(priv, spec, f, &min_inline);
1002
1003         if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH)) {
1004                 rep = rpriv->rep;
1005                 if (rep->vport != FDB_UPLINK_VPORT &&
1006                     (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
1007                     esw->offloads.inline_mode < min_inline)) {
1008                         netdev_warn(priv->netdev,
1009                                     "Flow is not offloaded due to min inline setting, required %d actual %d\n",
1010                                     min_inline, esw->offloads.inline_mode);
1011                         return -EOPNOTSUPP;
1012                 }
1013         }
1014
1015         return err;
1016 }
1017
1018 struct pedit_headers {
1019         struct ethhdr  eth;
1020         struct iphdr   ip4;
1021         struct ipv6hdr ip6;
1022         struct tcphdr  tcp;
1023         struct udphdr  udp;
1024 };
1025
1026 static int pedit_header_offsets[] = {
1027         [TCA_PEDIT_KEY_EX_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth),
1028         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4),
1029         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6),
1030         [TCA_PEDIT_KEY_EX_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp),
1031         [TCA_PEDIT_KEY_EX_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp),
1032 };
1033
1034 #define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype])
1035
1036 static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset,
1037                          struct pedit_headers *masks,
1038                          struct pedit_headers *vals)
1039 {
1040         u32 *curr_pmask, *curr_pval;
1041
1042         if (hdr_type >= __PEDIT_HDR_TYPE_MAX)
1043                 goto out_err;
1044
1045         curr_pmask = (u32 *)(pedit_header(masks, hdr_type) + offset);
1046         curr_pval  = (u32 *)(pedit_header(vals, hdr_type) + offset);
1047
1048         if (*curr_pmask & mask)  /* disallow acting twice on the same location */
1049                 goto out_err;
1050
1051         *curr_pmask |= mask;
1052         *curr_pval  |= (val & mask);
1053
1054         return 0;
1055
1056 out_err:
1057         return -EOPNOTSUPP;
1058 }
1059
1060 struct mlx5_fields {
1061         u8  field;
1062         u8  size;
1063         u32 offset;
1064 };
1065
1066 static struct mlx5_fields fields[] = {
1067         {MLX5_ACTION_IN_FIELD_OUT_DMAC_47_16, 4, offsetof(struct pedit_headers, eth.h_dest[0])},
1068         {MLX5_ACTION_IN_FIELD_OUT_DMAC_15_0,  2, offsetof(struct pedit_headers, eth.h_dest[4])},
1069         {MLX5_ACTION_IN_FIELD_OUT_SMAC_47_16, 4, offsetof(struct pedit_headers, eth.h_source[0])},
1070         {MLX5_ACTION_IN_FIELD_OUT_SMAC_15_0,  2, offsetof(struct pedit_headers, eth.h_source[4])},
1071         {MLX5_ACTION_IN_FIELD_OUT_ETHERTYPE,  2, offsetof(struct pedit_headers, eth.h_proto)},
1072
1073         {MLX5_ACTION_IN_FIELD_OUT_IP_DSCP, 1, offsetof(struct pedit_headers, ip4.tos)},
1074         {MLX5_ACTION_IN_FIELD_OUT_IP_TTL,  1, offsetof(struct pedit_headers, ip4.ttl)},
1075         {MLX5_ACTION_IN_FIELD_OUT_SIPV4,   4, offsetof(struct pedit_headers, ip4.saddr)},
1076         {MLX5_ACTION_IN_FIELD_OUT_DIPV4,   4, offsetof(struct pedit_headers, ip4.daddr)},
1077
1078         {MLX5_ACTION_IN_FIELD_OUT_SIPV6_127_96, 4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[0])},
1079         {MLX5_ACTION_IN_FIELD_OUT_SIPV6_95_64,  4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[1])},
1080         {MLX5_ACTION_IN_FIELD_OUT_SIPV6_63_32,  4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[2])},
1081         {MLX5_ACTION_IN_FIELD_OUT_SIPV6_31_0,   4, offsetof(struct pedit_headers, ip6.saddr.s6_addr32[3])},
1082         {MLX5_ACTION_IN_FIELD_OUT_DIPV6_127_96, 4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[0])},
1083         {MLX5_ACTION_IN_FIELD_OUT_DIPV6_95_64,  4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[1])},
1084         {MLX5_ACTION_IN_FIELD_OUT_DIPV6_63_32,  4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[2])},
1085         {MLX5_ACTION_IN_FIELD_OUT_DIPV6_31_0,   4, offsetof(struct pedit_headers, ip6.daddr.s6_addr32[3])},
1086
1087         {MLX5_ACTION_IN_FIELD_OUT_TCP_SPORT, 2, offsetof(struct pedit_headers, tcp.source)},
1088         {MLX5_ACTION_IN_FIELD_OUT_TCP_DPORT, 2, offsetof(struct pedit_headers, tcp.dest)},
1089         {MLX5_ACTION_IN_FIELD_OUT_TCP_FLAGS, 1, offsetof(struct pedit_headers, tcp.ack_seq) + 5},
1090
1091         {MLX5_ACTION_IN_FIELD_OUT_UDP_SPORT, 2, offsetof(struct pedit_headers, udp.source)},
1092         {MLX5_ACTION_IN_FIELD_OUT_UDP_DPORT, 2, offsetof(struct pedit_headers, udp.dest)},
1093 };
1094
1095 /* On input attr->num_mod_hdr_actions tells how many HW actions can be parsed at
1096  * max from the SW pedit action. On success, it says how many HW actions were
1097  * actually parsed.
1098  */
1099 static int offload_pedit_fields(struct pedit_headers *masks,
1100                                 struct pedit_headers *vals,
1101                                 struct mlx5e_tc_flow_parse_attr *parse_attr)
1102 {
1103         struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
1104         int i, action_size, nactions, max_actions, first, last, first_z;
1105         void *s_masks_p, *a_masks_p, *vals_p;
1106         struct mlx5_fields *f;
1107         u8 cmd, field_bsize;
1108         u32 s_mask, a_mask;
1109         unsigned long mask;
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                 first_z = find_first_zero_bit(&mask, field_bsize);
1164                 first = find_first_bit(&mask, field_bsize);
1165                 last  = find_last_bit(&mask, field_bsize);
1166                 if (first > 0 || last != (field_bsize - 1) || first_z < last) {
1167                         printk(KERN_WARNING "mlx5: partial rewrite (mask %lx) is currently not offloaded\n",
1168                                mask);
1169                         return -EOPNOTSUPP;
1170                 }
1171
1172                 MLX5_SET(set_action_in, action, action_type, cmd);
1173                 MLX5_SET(set_action_in, action, field, f->field);
1174
1175                 if (cmd == MLX5_ACTION_TYPE_SET) {
1176                         MLX5_SET(set_action_in, action, offset, 0);
1177                         /* length is num of bits to be written, zero means length of 32 */
1178                         MLX5_SET(set_action_in, action, length, field_bsize);
1179                 }
1180
1181                 if (field_bsize == 32)
1182                         MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p));
1183                 else if (field_bsize == 16)
1184                         MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p));
1185                 else if (field_bsize == 8)
1186                         MLX5_SET(set_action_in, action, data, *(u8 *)vals_p);
1187
1188                 action += action_size;
1189                 nactions++;
1190         }
1191
1192         parse_attr->num_mod_hdr_actions = nactions;
1193         return 0;
1194 }
1195
1196 static int alloc_mod_hdr_actions(struct mlx5e_priv *priv,
1197                                  const struct tc_action *a, int namespace,
1198                                  struct mlx5e_tc_flow_parse_attr *parse_attr)
1199 {
1200         int nkeys, action_size, max_actions;
1201
1202         nkeys = tcf_pedit_nkeys(a);
1203         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
1204
1205         if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
1206                 max_actions = MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, max_modify_header_actions);
1207         else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
1208                 max_actions = MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, max_modify_header_actions);
1209
1210         /* can get up to crazingly 16 HW actions in 32 bits pedit SW key */
1211         max_actions = min(max_actions, nkeys * 16);
1212
1213         parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL);
1214         if (!parse_attr->mod_hdr_actions)
1215                 return -ENOMEM;
1216
1217         parse_attr->num_mod_hdr_actions = max_actions;
1218         return 0;
1219 }
1220
1221 static const struct pedit_headers zero_masks = {};
1222
1223 static int parse_tc_pedit_action(struct mlx5e_priv *priv,
1224                                  const struct tc_action *a, int namespace,
1225                                  struct mlx5e_tc_flow_parse_attr *parse_attr)
1226 {
1227         struct pedit_headers masks[__PEDIT_CMD_MAX], vals[__PEDIT_CMD_MAX], *cmd_masks;
1228         int nkeys, i, err = -EOPNOTSUPP;
1229         u32 mask, val, offset;
1230         u8 cmd, htype;
1231
1232         nkeys = tcf_pedit_nkeys(a);
1233
1234         memset(masks, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1235         memset(vals,  0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1236
1237         for (i = 0; i < nkeys; i++) {
1238                 htype = tcf_pedit_htype(a, i);
1239                 cmd = tcf_pedit_cmd(a, i);
1240                 err = -EOPNOTSUPP; /* can't be all optimistic */
1241
1242                 if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK) {
1243                         printk(KERN_WARNING "mlx5: legacy pedit isn't offloaded\n");
1244                         goto out_err;
1245                 }
1246
1247                 if (cmd != TCA_PEDIT_KEY_EX_CMD_SET && cmd != TCA_PEDIT_KEY_EX_CMD_ADD) {
1248                         printk(KERN_WARNING "mlx5: pedit cmd %d isn't offloaded\n", cmd);
1249                         goto out_err;
1250                 }
1251
1252                 mask = tcf_pedit_mask(a, i);
1253                 val = tcf_pedit_val(a, i);
1254                 offset = tcf_pedit_offset(a, i);
1255
1256                 err = set_pedit_val(htype, ~mask, val, offset, &masks[cmd], &vals[cmd]);
1257                 if (err)
1258                         goto out_err;
1259         }
1260
1261         err = alloc_mod_hdr_actions(priv, a, namespace, parse_attr);
1262         if (err)
1263                 goto out_err;
1264
1265         err = offload_pedit_fields(masks, vals, parse_attr);
1266         if (err < 0)
1267                 goto out_dealloc_parsed_actions;
1268
1269         for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
1270                 cmd_masks = &masks[cmd];
1271                 if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
1272                         printk(KERN_WARNING "mlx5: attempt to offload an unsupported field (cmd %d)\n",
1273                                cmd);
1274                         print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
1275                                        16, 1, cmd_masks, sizeof(zero_masks), true);
1276                         err = -EOPNOTSUPP;
1277                         goto out_dealloc_parsed_actions;
1278                 }
1279         }
1280
1281         return 0;
1282
1283 out_dealloc_parsed_actions:
1284         kfree(parse_attr->mod_hdr_actions);
1285 out_err:
1286         return err;
1287 }
1288
1289 static bool csum_offload_supported(struct mlx5e_priv *priv, u32 action, u32 update_flags)
1290 {
1291         u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP |
1292                          TCA_CSUM_UPDATE_FLAG_UDP;
1293
1294         /*  The HW recalcs checksums only if re-writing headers */
1295         if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) {
1296                 netdev_warn(priv->netdev,
1297                             "TC csum action is only offloaded with pedit\n");
1298                 return false;
1299         }
1300
1301         if (update_flags & ~prot_flags) {
1302                 netdev_warn(priv->netdev,
1303                             "can't offload TC csum action for some header/s - flags %#x\n",
1304                             update_flags);
1305                 return false;
1306         }
1307
1308         return true;
1309 }
1310
1311 static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1312                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
1313                                 struct mlx5e_tc_flow *flow)
1314 {
1315         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
1316         const struct tc_action *a;
1317         LIST_HEAD(actions);
1318         int err;
1319
1320         if (tc_no_actions(exts))
1321                 return -EINVAL;
1322
1323         attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
1324         attr->action = 0;
1325
1326         tcf_exts_to_list(exts, &actions);
1327         list_for_each_entry(a, &actions, list) {
1328                 if (is_tcf_gact_shot(a)) {
1329                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
1330                         if (MLX5_CAP_FLOWTABLE(priv->mdev,
1331                                                flow_table_properties_nic_receive.flow_counter))
1332                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
1333                         continue;
1334                 }
1335
1336                 if (is_tcf_pedit(a)) {
1337                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_KERNEL,
1338                                                     parse_attr);
1339                         if (err)
1340                                 return err;
1341
1342                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR |
1343                                         MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1344                         continue;
1345                 }
1346
1347                 if (is_tcf_csum(a)) {
1348                         if (csum_offload_supported(priv, attr->action,
1349                                                    tcf_csum_update_flags(a)))
1350                                 continue;
1351
1352                         return -EOPNOTSUPP;
1353                 }
1354
1355                 if (is_tcf_skbedit_mark(a)) {
1356                         u32 mark = tcf_skbedit_mark(a);
1357
1358                         if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
1359                                 netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
1360                                             mark);
1361                                 return -EINVAL;
1362                         }
1363
1364                         attr->flow_tag = mark;
1365                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1366                         continue;
1367                 }
1368
1369                 return -EINVAL;
1370         }
1371
1372         return 0;
1373 }
1374
1375 static inline int cmp_encap_info(struct ip_tunnel_key *a,
1376                                  struct ip_tunnel_key *b)
1377 {
1378         return memcmp(a, b, sizeof(*a));
1379 }
1380
1381 static inline int hash_encap_info(struct ip_tunnel_key *key)
1382 {
1383         return jhash(key, sizeof(*key), 0);
1384 }
1385
1386 static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
1387                                    struct net_device *mirred_dev,
1388                                    struct net_device **out_dev,
1389                                    struct flowi4 *fl4,
1390                                    struct neighbour **out_n,
1391                                    int *out_ttl)
1392 {
1393         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1394         struct rtable *rt;
1395         struct neighbour *n = NULL;
1396
1397 #if IS_ENABLED(CONFIG_INET)
1398         int ret;
1399
1400         rt = ip_route_output_key(dev_net(mirred_dev), fl4);
1401         ret = PTR_ERR_OR_ZERO(rt);
1402         if (ret)
1403                 return ret;
1404 #else
1405         return -EOPNOTSUPP;
1406 #endif
1407         /* if the egress device isn't on the same HW e-switch, we use the uplink */
1408         if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
1409                 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
1410         else
1411                 *out_dev = rt->dst.dev;
1412
1413         *out_ttl = ip4_dst_hoplimit(&rt->dst);
1414         n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
1415         ip_rt_put(rt);
1416         if (!n)
1417                 return -ENOMEM;
1418
1419         *out_n = n;
1420         return 0;
1421 }
1422
1423 static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
1424                                    struct net_device *mirred_dev,
1425                                    struct net_device **out_dev,
1426                                    struct flowi6 *fl6,
1427                                    struct neighbour **out_n,
1428                                    int *out_ttl)
1429 {
1430         struct neighbour *n = NULL;
1431         struct dst_entry *dst;
1432
1433 #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
1434         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1435         int ret;
1436
1437         dst = ip6_route_output(dev_net(mirred_dev), NULL, fl6);
1438         ret = dst->error;
1439         if (ret) {
1440                 dst_release(dst);
1441                 return ret;
1442         }
1443
1444         *out_ttl = ip6_dst_hoplimit(dst);
1445
1446         /* if the egress device isn't on the same HW e-switch, we use the uplink */
1447         if (!switchdev_port_same_parent_id(priv->netdev, dst->dev))
1448                 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
1449         else
1450                 *out_dev = dst->dev;
1451 #else
1452         return -EOPNOTSUPP;
1453 #endif
1454
1455         n = dst_neigh_lookup(dst, &fl6->daddr);
1456         dst_release(dst);
1457         if (!n)
1458                 return -ENOMEM;
1459
1460         *out_n = n;
1461         return 0;
1462 }
1463
1464 static void gen_vxlan_header_ipv4(struct net_device *out_dev,
1465                                   char buf[], int encap_size,
1466                                   unsigned char h_dest[ETH_ALEN],
1467                                   int ttl,
1468                                   __be32 daddr,
1469                                   __be32 saddr,
1470                                   __be16 udp_dst_port,
1471                                   __be32 vx_vni)
1472 {
1473         struct ethhdr *eth = (struct ethhdr *)buf;
1474         struct iphdr  *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
1475         struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
1476         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
1477
1478         memset(buf, 0, encap_size);
1479
1480         ether_addr_copy(eth->h_dest, h_dest);
1481         ether_addr_copy(eth->h_source, out_dev->dev_addr);
1482         eth->h_proto = htons(ETH_P_IP);
1483
1484         ip->daddr = daddr;
1485         ip->saddr = saddr;
1486
1487         ip->ttl = ttl;
1488         ip->protocol = IPPROTO_UDP;
1489         ip->version = 0x4;
1490         ip->ihl = 0x5;
1491
1492         udp->dest = udp_dst_port;
1493         vxh->vx_flags = VXLAN_HF_VNI;
1494         vxh->vx_vni = vxlan_vni_field(vx_vni);
1495 }
1496
1497 static void gen_vxlan_header_ipv6(struct net_device *out_dev,
1498                                   char buf[], int encap_size,
1499                                   unsigned char h_dest[ETH_ALEN],
1500                                   int ttl,
1501                                   struct in6_addr *daddr,
1502                                   struct in6_addr *saddr,
1503                                   __be16 udp_dst_port,
1504                                   __be32 vx_vni)
1505 {
1506         struct ethhdr *eth = (struct ethhdr *)buf;
1507         struct ipv6hdr *ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr));
1508         struct udphdr *udp = (struct udphdr *)((char *)ip6h + sizeof(struct ipv6hdr));
1509         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
1510
1511         memset(buf, 0, encap_size);
1512
1513         ether_addr_copy(eth->h_dest, h_dest);
1514         ether_addr_copy(eth->h_source, out_dev->dev_addr);
1515         eth->h_proto = htons(ETH_P_IPV6);
1516
1517         ip6_flow_hdr(ip6h, 0, 0);
1518         /* the HW fills up ipv6 payload len */
1519         ip6h->nexthdr     = IPPROTO_UDP;
1520         ip6h->hop_limit   = ttl;
1521         ip6h->daddr       = *daddr;
1522         ip6h->saddr       = *saddr;
1523
1524         udp->dest = udp_dst_port;
1525         vxh->vx_flags = VXLAN_HF_VNI;
1526         vxh->vx_vni = vxlan_vni_field(vx_vni);
1527 }
1528
1529 static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
1530                                           struct net_device *mirred_dev,
1531                                           struct mlx5e_encap_entry *e)
1532 {
1533         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
1534         int ipv4_encap_size = ETH_HLEN + sizeof(struct iphdr) + VXLAN_HLEN;
1535         struct ip_tunnel_key *tun_key = &e->tun_info.key;
1536         struct net_device *out_dev;
1537         struct neighbour *n = NULL;
1538         struct flowi4 fl4 = {};
1539         char *encap_header;
1540         int ttl, err;
1541         u8 nud_state;
1542
1543         if (max_encap_size < ipv4_encap_size) {
1544                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
1545                                ipv4_encap_size, max_encap_size);
1546                 return -EOPNOTSUPP;
1547         }
1548
1549         encap_header = kzalloc(ipv4_encap_size, GFP_KERNEL);
1550         if (!encap_header)
1551                 return -ENOMEM;
1552
1553         switch (e->tunnel_type) {
1554         case MLX5_HEADER_TYPE_VXLAN:
1555                 fl4.flowi4_proto = IPPROTO_UDP;
1556                 fl4.fl4_dport = tun_key->tp_dst;
1557                 break;
1558         default:
1559                 err = -EOPNOTSUPP;
1560                 goto out;
1561         }
1562         fl4.flowi4_tos = tun_key->tos;
1563         fl4.daddr = tun_key->u.ipv4.dst;
1564         fl4.saddr = tun_key->u.ipv4.src;
1565
1566         err = mlx5e_route_lookup_ipv4(priv, mirred_dev, &out_dev,
1567                                       &fl4, &n, &ttl);
1568         if (err)
1569                 goto out;
1570
1571         /* used by mlx5e_detach_encap to lookup a neigh hash table
1572          * entry in the neigh hash table when a user deletes a rule
1573          */
1574         e->m_neigh.dev = n->dev;
1575         e->m_neigh.family = n->ops->family;
1576         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
1577         e->out_dev = out_dev;
1578
1579         /* It's importent to add the neigh to the hash table before checking
1580          * the neigh validity state. So if we'll get a notification, in case the
1581          * neigh changes it's validity state, we would find the relevant neigh
1582          * in the hash.
1583          */
1584         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
1585         if (err)
1586                 goto out;
1587
1588         read_lock_bh(&n->lock);
1589         nud_state = n->nud_state;
1590         ether_addr_copy(e->h_dest, n->ha);
1591         read_unlock_bh(&n->lock);
1592
1593         switch (e->tunnel_type) {
1594         case MLX5_HEADER_TYPE_VXLAN:
1595                 gen_vxlan_header_ipv4(out_dev, encap_header,
1596                                       ipv4_encap_size, e->h_dest, ttl,
1597                                       fl4.daddr,
1598                                       fl4.saddr, tun_key->tp_dst,
1599                                       tunnel_id_to_key32(tun_key->tun_id));
1600                 break;
1601         default:
1602                 err = -EOPNOTSUPP;
1603                 goto destroy_neigh_entry;
1604         }
1605         e->encap_size = ipv4_encap_size;
1606         e->encap_header = encap_header;
1607
1608         if (!(nud_state & NUD_VALID)) {
1609                 neigh_event_send(n, NULL);
1610                 err = -EAGAIN;
1611                 goto out;
1612         }
1613
1614         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
1615                                ipv4_encap_size, encap_header, &e->encap_id);
1616         if (err)
1617                 goto destroy_neigh_entry;
1618
1619         e->flags |= MLX5_ENCAP_ENTRY_VALID;
1620         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
1621         neigh_release(n);
1622         return err;
1623
1624 destroy_neigh_entry:
1625         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1626 out:
1627         kfree(encap_header);
1628         if (n)
1629                 neigh_release(n);
1630         return err;
1631 }
1632
1633 static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
1634                                           struct net_device *mirred_dev,
1635                                           struct mlx5e_encap_entry *e)
1636 {
1637         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
1638         int ipv6_encap_size = ETH_HLEN + sizeof(struct ipv6hdr) + VXLAN_HLEN;
1639         struct ip_tunnel_key *tun_key = &e->tun_info.key;
1640         struct net_device *out_dev;
1641         struct neighbour *n = NULL;
1642         struct flowi6 fl6 = {};
1643         char *encap_header;
1644         int err, ttl = 0;
1645         u8 nud_state;
1646
1647         if (max_encap_size < ipv6_encap_size) {
1648                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
1649                                ipv6_encap_size, max_encap_size);
1650                 return -EOPNOTSUPP;
1651         }
1652
1653         encap_header = kzalloc(ipv6_encap_size, GFP_KERNEL);
1654         if (!encap_header)
1655                 return -ENOMEM;
1656
1657         switch (e->tunnel_type) {
1658         case MLX5_HEADER_TYPE_VXLAN:
1659                 fl6.flowi6_proto = IPPROTO_UDP;
1660                 fl6.fl6_dport = tun_key->tp_dst;
1661                 break;
1662         default:
1663                 err = -EOPNOTSUPP;
1664                 goto out;
1665         }
1666
1667         fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label);
1668         fl6.daddr = tun_key->u.ipv6.dst;
1669         fl6.saddr = tun_key->u.ipv6.src;
1670
1671         err = mlx5e_route_lookup_ipv6(priv, mirred_dev, &out_dev,
1672                                       &fl6, &n, &ttl);
1673         if (err)
1674                 goto out;
1675
1676         /* used by mlx5e_detach_encap to lookup a neigh hash table
1677          * entry in the neigh hash table when a user deletes a rule
1678          */
1679         e->m_neigh.dev = n->dev;
1680         e->m_neigh.family = n->ops->family;
1681         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
1682         e->out_dev = out_dev;
1683
1684         /* It's importent to add the neigh to the hash table before checking
1685          * the neigh validity state. So if we'll get a notification, in case the
1686          * neigh changes it's validity state, we would find the relevant neigh
1687          * in the hash.
1688          */
1689         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
1690         if (err)
1691                 goto out;
1692
1693         read_lock_bh(&n->lock);
1694         nud_state = n->nud_state;
1695         ether_addr_copy(e->h_dest, n->ha);
1696         read_unlock_bh(&n->lock);
1697
1698         switch (e->tunnel_type) {
1699         case MLX5_HEADER_TYPE_VXLAN:
1700                 gen_vxlan_header_ipv6(out_dev, encap_header,
1701                                       ipv6_encap_size, e->h_dest, ttl,
1702                                       &fl6.daddr,
1703                                       &fl6.saddr, tun_key->tp_dst,
1704                                       tunnel_id_to_key32(tun_key->tun_id));
1705                 break;
1706         default:
1707                 err = -EOPNOTSUPP;
1708                 goto destroy_neigh_entry;
1709         }
1710
1711         e->encap_size = ipv6_encap_size;
1712         e->encap_header = encap_header;
1713
1714         if (!(nud_state & NUD_VALID)) {
1715                 neigh_event_send(n, NULL);
1716                 err = -EAGAIN;
1717                 goto out;
1718         }
1719
1720         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
1721                                ipv6_encap_size, encap_header, &e->encap_id);
1722         if (err)
1723                 goto destroy_neigh_entry;
1724
1725         e->flags |= MLX5_ENCAP_ENTRY_VALID;
1726         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
1727         neigh_release(n);
1728         return err;
1729
1730 destroy_neigh_entry:
1731         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1732 out:
1733         kfree(encap_header);
1734         if (n)
1735                 neigh_release(n);
1736         return err;
1737 }
1738
1739 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
1740                               struct ip_tunnel_info *tun_info,
1741                               struct net_device *mirred_dev,
1742                               struct net_device **encap_dev,
1743                               struct mlx5e_tc_flow *flow)
1744 {
1745         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1746         struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw);
1747         unsigned short family = ip_tunnel_info_af(tun_info);
1748         struct mlx5e_priv *up_priv = netdev_priv(up_dev);
1749         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1750         struct ip_tunnel_key *key = &tun_info->key;
1751         struct mlx5e_encap_entry *e;
1752         int tunnel_type, err = 0;
1753         uintptr_t hash_key;
1754         bool found = false;
1755
1756         /* udp dst port must be set */
1757         if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
1758                 goto vxlan_encap_offload_err;
1759
1760         /* setting udp src port isn't supported */
1761         if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
1762 vxlan_encap_offload_err:
1763                 netdev_warn(priv->netdev,
1764                             "must set udp dst port and not set udp src port\n");
1765                 return -EOPNOTSUPP;
1766         }
1767
1768         if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->tp_dst)) &&
1769             MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
1770                 tunnel_type = MLX5_HEADER_TYPE_VXLAN;
1771         } else {
1772                 netdev_warn(priv->netdev,
1773                             "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
1774                 return -EOPNOTSUPP;
1775         }
1776
1777         hash_key = hash_encap_info(key);
1778
1779         hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
1780                                    encap_hlist, hash_key) {
1781                 if (!cmp_encap_info(&e->tun_info.key, key)) {
1782                         found = true;
1783                         break;
1784                 }
1785         }
1786
1787         if (found)
1788                 goto attach_flow;
1789
1790         e = kzalloc(sizeof(*e), GFP_KERNEL);
1791         if (!e)
1792                 return -ENOMEM;
1793
1794         e->tun_info = *tun_info;
1795         e->tunnel_type = tunnel_type;
1796         INIT_LIST_HEAD(&e->flows);
1797
1798         if (family == AF_INET)
1799                 err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e);
1800         else if (family == AF_INET6)
1801                 err = mlx5e_create_encap_header_ipv6(priv, mirred_dev, e);
1802
1803         if (err && err != -EAGAIN)
1804                 goto out_err;
1805
1806         hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
1807
1808 attach_flow:
1809         list_add(&flow->encap, &e->flows);
1810         *encap_dev = e->out_dev;
1811         if (e->flags & MLX5_ENCAP_ENTRY_VALID)
1812                 attr->encap_id = e->encap_id;
1813
1814         return err;
1815
1816 out_err:
1817         kfree(e);
1818         return err;
1819 }
1820
1821 static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1822                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
1823                                 struct mlx5e_tc_flow *flow)
1824 {
1825         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1826         struct mlx5e_rep_priv *rpriv = priv->ppriv;
1827         struct ip_tunnel_info *info = NULL;
1828         const struct tc_action *a;
1829         LIST_HEAD(actions);
1830         bool encap = false;
1831         int err = 0;
1832
1833         if (tc_no_actions(exts))
1834                 return -EINVAL;
1835
1836         memset(attr, 0, sizeof(*attr));
1837         attr->in_rep = rpriv->rep;
1838
1839         tcf_exts_to_list(exts, &actions);
1840         list_for_each_entry(a, &actions, list) {
1841                 if (is_tcf_gact_shot(a)) {
1842                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
1843                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1844                         continue;
1845                 }
1846
1847                 if (is_tcf_pedit(a)) {
1848                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_FDB,
1849                                                     parse_attr);
1850                         if (err)
1851                                 return err;
1852
1853                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
1854                         continue;
1855                 }
1856
1857                 if (is_tcf_csum(a)) {
1858                         if (csum_offload_supported(priv, attr->action,
1859                                                    tcf_csum_update_flags(a)))
1860                                 continue;
1861
1862                         return -EOPNOTSUPP;
1863                 }
1864
1865                 if (is_tcf_mirred_egress_redirect(a)) {
1866                         int ifindex = tcf_mirred_ifindex(a);
1867                         struct net_device *out_dev, *encap_dev = NULL;
1868                         struct mlx5e_priv *out_priv;
1869
1870                         out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
1871
1872                         if (switchdev_port_same_parent_id(priv->netdev,
1873                                                           out_dev)) {
1874                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1875                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1876                                 out_priv = netdev_priv(out_dev);
1877                                 rpriv = out_priv->ppriv;
1878                                 attr->out_rep = rpriv->rep;
1879                         } else if (encap) {
1880                                 err = mlx5e_attach_encap(priv, info,
1881                                                          out_dev, &encap_dev, flow);
1882                                 if (err && err != -EAGAIN)
1883                                         return err;
1884                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
1885                                         MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1886                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1887                                 out_priv = netdev_priv(encap_dev);
1888                                 rpriv = out_priv->ppriv;
1889                                 attr->out_rep = rpriv->rep;
1890                                 attr->parse_attr = parse_attr;
1891                         } else {
1892                                 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
1893                                        priv->netdev->name, out_dev->name);
1894                                 return -EINVAL;
1895                         }
1896                         continue;
1897                 }
1898
1899                 if (is_tcf_tunnel_set(a)) {
1900                         info = tcf_tunnel_info(a);
1901                         if (info)
1902                                 encap = true;
1903                         else
1904                                 return -EOPNOTSUPP;
1905                         continue;
1906                 }
1907
1908                 if (is_tcf_vlan(a)) {
1909                         if (tcf_vlan_action(a) == TCA_VLAN_ACT_POP) {
1910                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
1911                         } else if (tcf_vlan_action(a) == TCA_VLAN_ACT_PUSH) {
1912                                 if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
1913                                         return -EOPNOTSUPP;
1914
1915                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
1916                                 attr->vlan = tcf_vlan_push_vid(a);
1917                         } else { /* action is TCA_VLAN_ACT_MODIFY */
1918                                 return -EOPNOTSUPP;
1919                         }
1920                         continue;
1921                 }
1922
1923                 if (is_tcf_tunnel_release(a)) {
1924                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
1925                         continue;
1926                 }
1927
1928                 return -EINVAL;
1929         }
1930         return err;
1931 }
1932
1933 int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
1934                            struct tc_cls_flower_offload *f)
1935 {
1936         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1937         struct mlx5e_tc_flow_parse_attr *parse_attr;
1938         struct mlx5e_tc_table *tc = &priv->fs.tc;
1939         struct mlx5e_tc_flow *flow;
1940         int attr_size, err = 0;
1941         u8 flow_flags = 0;
1942
1943         if (esw && esw->mode == SRIOV_OFFLOADS) {
1944                 flow_flags = MLX5E_TC_FLOW_ESWITCH;
1945                 attr_size  = sizeof(struct mlx5_esw_flow_attr);
1946         } else {
1947                 flow_flags = MLX5E_TC_FLOW_NIC;
1948                 attr_size  = sizeof(struct mlx5_nic_flow_attr);
1949         }
1950
1951         flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
1952         parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
1953         if (!parse_attr || !flow) {
1954                 err = -ENOMEM;
1955                 goto err_free;
1956         }
1957
1958         flow->cookie = f->cookie;
1959         flow->flags = flow_flags;
1960
1961         err = parse_cls_flower(priv, flow, &parse_attr->spec, f);
1962         if (err < 0)
1963                 goto err_free;
1964
1965         if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
1966                 err = parse_tc_fdb_actions(priv, f->exts, parse_attr, flow);
1967                 if (err < 0)
1968                         goto err_handle_encap_flow;
1969                 flow->rule = mlx5e_tc_add_fdb_flow(priv, parse_attr, flow);
1970         } else {
1971                 err = parse_tc_nic_actions(priv, f->exts, parse_attr, flow);
1972                 if (err < 0)
1973                         goto err_free;
1974                 flow->rule = mlx5e_tc_add_nic_flow(priv, parse_attr, flow);
1975         }
1976
1977         if (IS_ERR(flow->rule)) {
1978                 err = PTR_ERR(flow->rule);
1979                 goto err_free;
1980         }
1981
1982         flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
1983         err = rhashtable_insert_fast(&tc->ht, &flow->node,
1984                                      tc->ht_params);
1985         if (err)
1986                 goto err_del_rule;
1987
1988         if (flow->flags & MLX5E_TC_FLOW_ESWITCH &&
1989             !(flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP))
1990                 kvfree(parse_attr);
1991         return err;
1992
1993 err_del_rule:
1994         mlx5e_tc_del_flow(priv, flow);
1995
1996 err_handle_encap_flow:
1997         if (err == -EAGAIN) {
1998                 err = rhashtable_insert_fast(&tc->ht, &flow->node,
1999                                              tc->ht_params);
2000                 if (err)
2001                         mlx5e_tc_del_flow(priv, flow);
2002                 else
2003                         return 0;
2004         }
2005
2006 err_free:
2007         kvfree(parse_attr);
2008         kfree(flow);
2009         return err;
2010 }
2011
2012 int mlx5e_delete_flower(struct mlx5e_priv *priv,
2013                         struct tc_cls_flower_offload *f)
2014 {
2015         struct mlx5e_tc_flow *flow;
2016         struct mlx5e_tc_table *tc = &priv->fs.tc;
2017
2018         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
2019                                       tc->ht_params);
2020         if (!flow)
2021                 return -EINVAL;
2022
2023         rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
2024
2025         mlx5e_tc_del_flow(priv, flow);
2026
2027         kfree(flow);
2028
2029         return 0;
2030 }
2031
2032 int mlx5e_stats_flower(struct mlx5e_priv *priv,
2033                        struct tc_cls_flower_offload *f)
2034 {
2035         struct mlx5e_tc_table *tc = &priv->fs.tc;
2036         struct mlx5e_tc_flow *flow;
2037         struct mlx5_fc *counter;
2038         u64 bytes;
2039         u64 packets;
2040         u64 lastuse;
2041
2042         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
2043                                       tc->ht_params);
2044         if (!flow)
2045                 return -EINVAL;
2046
2047         if (!(flow->flags & MLX5E_TC_FLOW_OFFLOADED))
2048                 return 0;
2049
2050         counter = mlx5_flow_rule_counter(flow->rule);
2051         if (!counter)
2052                 return 0;
2053
2054         mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
2055
2056         tcf_exts_stats_update(f->exts, bytes, packets, lastuse);
2057
2058         return 0;
2059 }
2060
2061 static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
2062         .head_offset = offsetof(struct mlx5e_tc_flow, node),
2063         .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
2064         .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
2065         .automatic_shrinking = true,
2066 };
2067
2068 int mlx5e_tc_init(struct mlx5e_priv *priv)
2069 {
2070         struct mlx5e_tc_table *tc = &priv->fs.tc;
2071
2072         hash_init(tc->mod_hdr_tbl);
2073
2074         tc->ht_params = mlx5e_tc_flow_ht_params;
2075         return rhashtable_init(&tc->ht, &tc->ht_params);
2076 }
2077
2078 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
2079 {
2080         struct mlx5e_tc_flow *flow = ptr;
2081         struct mlx5e_priv *priv = arg;
2082
2083         mlx5e_tc_del_flow(priv, flow);
2084         kfree(flow);
2085 }
2086
2087 void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
2088 {
2089         struct mlx5e_tc_table *tc = &priv->fs.tc;
2090
2091         rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
2092
2093         if (!IS_ERR_OR_NULL(tc->t)) {
2094                 mlx5_destroy_flow_table(tc->t);
2095                 tc->t = NULL;
2096         }
2097 }