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 ip_tunnel_info tun_info;
  82         struct mlx5_flow_spec spec;
  83         int num_mod_hdr_actions;
  84         void *mod_hdr_actions;
  85         int mirred_ifindex;
  86 };
  87
  88 enum {
  89         MLX5_HEADER_TYPE_VXLAN = 0x0,
  90         MLX5_HEADER_TYPE_NVGRE = 0x1,
  91 };
  92
  93 #define MLX5E_TC_TABLE_NUM_GROUPS 4
  94 #define MLX5E_TC_TABLE_MAX_GROUP_SIZE (1 << 16)
  95
  96 struct mod_hdr_key {
  97         int num_actions;
  98         void *actions;
  99 };
 100
 101 struct mlx5e_mod_hdr_entry {
 102         /* a node of a hash table which keeps all the mod_hdr entries */
 103         struct hlist_node mod_hdr_hlist;
 104
 105         /* flows sharing the same mod_hdr entry */
 106         struct list_head flows;
 107
 108         struct mod_hdr_key key;
 109
 110         u32 mod_hdr_id;
 111 };
 112
 113 #define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto)
 114
 115 static inline u32 hash_mod_hdr_info(struct mod_hdr_key *key)
 116 {
 117         return jhash(key->actions,
 118                      key->num_actions * MLX5_MH_ACT_SZ, 0);
 119 }
 120
 121 static inline int cmp_mod_hdr_info(struct mod_hdr_key *a,
 122                                    struct mod_hdr_key *b)
 123 {
 124         if (a->num_actions != b->num_actions)
 125                 return 1;
 126
 127         return memcmp(a->actions, b->actions, a->num_actions * MLX5_MH_ACT_SZ);
 128 }
 129
 130 static int mlx5e_attach_mod_hdr(struct mlx5e_priv *priv,
 131                                 struct mlx5e_tc_flow *flow,
 132                                 struct mlx5e_tc_flow_parse_attr *parse_attr)
 133 {
 134         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 135         int num_actions, actions_size, namespace, err;
 136         struct mlx5e_mod_hdr_entry *mh;
 137         struct mod_hdr_key key;
 138         bool found = false;
 139         u32 hash_key;
 140
 141         num_actions  = parse_attr->num_mod_hdr_actions;
 142         actions_size = MLX5_MH_ACT_SZ * num_actions;
 143
 144         key.actions = parse_attr->mod_hdr_actions;
 145         key.num_actions = num_actions;
 146
 147         hash_key = hash_mod_hdr_info(&key);
 148
 149         if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
 150                 namespace = MLX5_FLOW_NAMESPACE_FDB;
 151                 hash_for_each_possible(esw->offloads.mod_hdr_tbl, mh,
 152                                        mod_hdr_hlist, hash_key) {
 153                         if (!cmp_mod_hdr_info(&mh->key, &key)) {
 154                                 found = true;
 155                                 break;
 156                         }
 157                 }
 158         } else {
 159                 namespace = MLX5_FLOW_NAMESPACE_KERNEL;
 160                 hash_for_each_possible(priv->fs.tc.mod_hdr_tbl, mh,
 161                                        mod_hdr_hlist, hash_key) {
 162                         if (!cmp_mod_hdr_info(&mh->key, &key)) {
 163                                 found = true;
 164                                 break;
 165                         }
 166                 }
 167         }
 168
 169         if (found)
 170                 goto attach_flow;
 171
 172         mh = kzalloc(sizeof(*mh) + actions_size, GFP_KERNEL);
 173         if (!mh)
 174                 return -ENOMEM;
 175
 176         mh->key.actions = (void *)mh + sizeof(*mh);
 177         memcpy(mh->key.actions, key.actions, actions_size);
 178         mh->key.num_actions = num_actions;
 179         INIT_LIST_HEAD(&mh->flows);
 180
 181         err = mlx5_modify_header_alloc(priv->mdev, namespace,
 182                                        mh->key.num_actions,
 183                                        mh->key.actions,
 184                                        &mh->mod_hdr_id);
 185         if (err)
 186                 goto out_err;
 187
 188         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
 189                 hash_add(esw->offloads.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key);
 190         else
 191                 hash_add(priv->fs.tc.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key);
 192
 193 attach_flow:
 194         list_add(&flow->mod_hdr, &mh->flows);
 195         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
 196                 flow->esw_attr->mod_hdr_id = mh->mod_hdr_id;
 197         else
 198                 flow->nic_attr->mod_hdr_id = mh->mod_hdr_id;
 199
 200         return 0;
 201
 202 out_err:
 203         kfree(mh);
 204         return err;
 205 }
 206
 207 static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv,
 208                                  struct mlx5e_tc_flow *flow)
 209 {
 210         struct list_head *next = flow->mod_hdr.next;
 211
 212         list_del(&flow->mod_hdr);
 213
 214         if (list_empty(next)) {
 215                 struct mlx5e_mod_hdr_entry *mh;
 216
 217                 mh = list_entry(next, struct mlx5e_mod_hdr_entry, flows);
 218
 219                 mlx5_modify_header_dealloc(priv->mdev, mh->mod_hdr_id);
 220                 hash_del(&mh->mod_hdr_hlist);
 221                 kfree(mh);
 222         }
 223 }
 224
 225 static struct mlx5_flow_handle *
 226 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
 227                       struct mlx5e_tc_flow_parse_attr *parse_attr,
 228                       struct mlx5e_tc_flow *flow)
 229 {
 230         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
 231         struct mlx5_core_dev *dev = priv->mdev;
 232         struct mlx5_flow_destination dest = {};
 233         struct mlx5_flow_act flow_act = {
 234                 .action = attr->action,
 235                 .flow_tag = attr->flow_tag,
 236                 .encap_id = 0,
 237         };
 238         struct mlx5_fc *counter = NULL;
 239         struct mlx5_flow_handle *rule;
 240         bool table_created = false;
 241         int err;
 242
 243         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
 244                 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
 245                 dest.ft = priv->fs.vlan.ft.t;
 246         } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
 247                 counter = mlx5_fc_create(dev, true);
 248                 if (IS_ERR(counter))
 249                         return ERR_CAST(counter);
 250
 251                 dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
 252                 dest.counter = counter;
 253         }
 254
 255         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
 256                 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
 257                 flow_act.modify_id = attr->mod_hdr_id;
 258                 kfree(parse_attr->mod_hdr_actions);
 259                 if (err) {
 260                         rule = ERR_PTR(err);
 261                         goto err_create_mod_hdr_id;
 262                 }
 263         }
 264
 265         if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
 266                 int tc_grp_size, tc_tbl_size;
 267                 u32 max_flow_counter;
 268
 269                 max_flow_counter = (MLX5_CAP_GEN(dev, max_flow_counter_31_16) << 16) |
 270                                     MLX5_CAP_GEN(dev, max_flow_counter_15_0);
 271
 272                 tc_grp_size = min_t(int, max_flow_counter, MLX5E_TC_TABLE_MAX_GROUP_SIZE);
 273
 274                 tc_tbl_size = min_t(int, tc_grp_size * MLX5E_TC_TABLE_NUM_GROUPS,
 275                                     BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev, log_max_ft_size)));
 276
 277                 priv->fs.tc.t =
 278                         mlx5_create_auto_grouped_flow_table(priv->fs.ns,
 279                                                             MLX5E_TC_PRIO,
 280                                                             tc_tbl_size,
 281                                                             MLX5E_TC_TABLE_NUM_GROUPS,
 282                                                             0, 0);
 283                 if (IS_ERR(priv->fs.tc.t)) {
 284                         netdev_err(priv->netdev,
 285                                    "Failed to create tc offload table\n");
 286                         rule = ERR_CAST(priv->fs.tc.t);
 287                         goto err_create_ft;
 288                 }
 289
 290                 table_created = true;
 291         }
 292
 293         parse_attr->spec.match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
 294         rule = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec,
 295                                    &flow_act, &dest, 1);
 296
 297         if (IS_ERR(rule))
 298                 goto err_add_rule;
 299
 300         return rule;
 301
 302 err_add_rule:
 303         if (table_created) {
 304                 mlx5_destroy_flow_table(priv->fs.tc.t);
 305                 priv->fs.tc.t = NULL;
 306         }
 307 err_create_ft:
 308         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 309                 mlx5e_detach_mod_hdr(priv, flow);
 310 err_create_mod_hdr_id:
 311         mlx5_fc_destroy(dev, counter);
 312
 313         return rule;
 314 }
 315
 316 static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
 317                                   struct mlx5e_tc_flow *flow)
 318 {
 319         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
 320         struct mlx5_fc *counter = NULL;
 321
 322         counter = mlx5_flow_rule_counter(flow->rule);
 323         mlx5_del_flow_rules(flow->rule);
 324         mlx5_fc_destroy(priv->mdev, counter);
 325
 326         if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
 327                 mlx5_destroy_flow_table(priv->fs.tc.t);
 328                 priv->fs.tc.t = NULL;
 329         }
 330
 331         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 332                 mlx5e_detach_mod_hdr(priv, flow);
 333 }
 334
 335 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
 336                                struct mlx5e_tc_flow *flow);
 337
 338 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
 339                               struct ip_tunnel_info *tun_info,
 340                               struct net_device *mirred_dev,
 341                               struct net_device **encap_dev,
 342                               struct mlx5e_tc_flow *flow);
 343
 344 static struct mlx5_flow_handle *
 345 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
 346                       struct mlx5e_tc_flow_parse_attr *parse_attr,
 347                       struct mlx5e_tc_flow *flow)
 348 {
 349         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 350         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
 351         struct net_device *out_dev, *encap_dev = NULL;
 352         struct mlx5_flow_handle *rule = NULL;
 353         struct mlx5e_rep_priv *rpriv;
 354         struct mlx5e_priv *out_priv;
 355         int err;
 356
 357         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP) {
 358                 out_dev = __dev_get_by_index(dev_net(priv->netdev),
 359                                              attr->parse_attr->mirred_ifindex);
 360                 err = mlx5e_attach_encap(priv, &parse_attr->tun_info,
 361                                          out_dev, &encap_dev, flow);
 362                 if (err) {
 363                         rule = ERR_PTR(err);
 364                         if (err != -EAGAIN)
 365                                 goto err_attach_encap;
 366                 }
 367                 out_priv = netdev_priv(encap_dev);
 368                 rpriv = out_priv->ppriv;
 369                 attr->out_rep = rpriv->rep;
 370         }
 371
 372         err = mlx5_eswitch_add_vlan_action(esw, attr);
 373         if (err) {
 374                 rule = ERR_PTR(err);
 375                 goto err_add_vlan;
 376         }
 377
 378         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
 379                 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
 380                 kfree(parse_attr->mod_hdr_actions);
 381                 if (err) {
 382                         rule = ERR_PTR(err);
 383                         goto err_mod_hdr;
 384                 }
 385         }
 386
 387         /* we get here if (1) there's no error (rule being null) or when
 388          * (2) there's an encap action and we're on -EAGAIN (no valid neigh)
 389          */
 390         if (rule != ERR_PTR(-EAGAIN)) {
 391                 rule = mlx5_eswitch_add_offloaded_rule(esw, &parse_attr->spec, attr);
 392                 if (IS_ERR(rule))
 393                         goto err_add_rule;
 394         }
 395         return rule;
 396
 397 err_add_rule:
 398         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 399                 mlx5e_detach_mod_hdr(priv, flow);
 400 err_mod_hdr:
 401         mlx5_eswitch_del_vlan_action(esw, attr);
 402 err_add_vlan:
 403         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
 404                 mlx5e_detach_encap(priv, flow);
 405 err_attach_encap:
 406         return rule;
 407 }
 408
 409 static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
 410                                   struct mlx5e_tc_flow *flow)
 411 {
 412         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 413         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
 414
 415         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
 416                 flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
 417                 mlx5_eswitch_del_offloaded_rule(esw, flow->rule, attr);
 418         }
 419
 420         mlx5_eswitch_del_vlan_action(esw, attr);
 421
 422         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP) {
 423                 mlx5e_detach_encap(priv, flow);
 424                 kvfree(attr->parse_attr);
 425         }
 426
 427         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 428                 mlx5e_detach_mod_hdr(priv, flow);
 429 }
 430
 431 void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
 432                               struct mlx5e_encap_entry *e)
 433 {
 434         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 435         struct mlx5_esw_flow_attr *esw_attr;
 436         struct mlx5e_tc_flow *flow;
 437         int err;
 438
 439         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
 440                                e->encap_size, e->encap_header,
 441                                &e->encap_id);
 442         if (err) {
 443                 mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %d\n",
 444                                err);
 445                 return;
 446         }
 447         e->flags |= MLX5_ENCAP_ENTRY_VALID;
 448         mlx5e_rep_queue_neigh_stats_work(priv);
 449
 450         list_for_each_entry(flow, &e->flows, encap) {
 451                 esw_attr = flow->esw_attr;
 452                 esw_attr->encap_id = e->encap_id;
 453                 flow->rule = mlx5_eswitch_add_offloaded_rule(esw, &esw_attr->parse_attr->spec, esw_attr);
 454                 if (IS_ERR(flow->rule)) {
 455                         err = PTR_ERR(flow->rule);
 456                         mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n",
 457                                        err);
 458                         continue;
 459                 }
 460                 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
 461         }
 462 }
 463
 464 void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
 465                               struct mlx5e_encap_entry *e)
 466 {
 467         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 468         struct mlx5e_tc_flow *flow;
 469
 470         list_for_each_entry(flow, &e->flows, encap) {
 471                 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
 472                         flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
 473                         mlx5_eswitch_del_offloaded_rule(esw, flow->rule, flow->esw_attr);
 474                 }
 475         }
 476
 477         if (e->flags & MLX5_ENCAP_ENTRY_VALID) {
 478                 e->flags &= ~MLX5_ENCAP_ENTRY_VALID;
 479                 mlx5_encap_dealloc(priv->mdev, e->encap_id);
 480         }
 481 }
 482
 483 void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
 484 {
 485         struct mlx5e_neigh *m_neigh = &nhe->m_neigh;
 486         u64 bytes, packets, lastuse = 0;
 487         struct mlx5e_tc_flow *flow;
 488         struct mlx5e_encap_entry *e;
 489         struct mlx5_fc *counter;
 490         struct neigh_table *tbl;
 491         bool neigh_used = false;
 492         struct neighbour *n;
 493
 494         if (m_neigh->family == AF_INET)
 495                 tbl = &arp_tbl;
 496 #if IS_ENABLED(CONFIG_IPV6)
 497         else if (m_neigh->family == AF_INET6)
 498                 tbl = ipv6_stub->nd_tbl;
 499 #endif
 500         else
 501                 return;
 502
 503         list_for_each_entry(e, &nhe->encap_list, encap_list) {
 504                 if (!(e->flags & MLX5_ENCAP_ENTRY_VALID))
 505                         continue;
 506                 list_for_each_entry(flow, &e->flows, encap) {
 507                         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
 508                                 counter = mlx5_flow_rule_counter(flow->rule);
 509                                 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
 510                                 if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) {
 511                                         neigh_used = true;
 512                                         break;
 513                                 }
 514                         }
 515                 }
 516         }
 517
 518         if (neigh_used) {
 519                 nhe->reported_lastuse = jiffies;
 520
 521                 /* find the relevant neigh according to the cached device and
 522                  * dst ip pair
 523                  */
 524                 n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev);
 525                 if (!n) {
 526                         WARN(1, "The neighbour already freed\n");
 527                         return;
 528                 }
 529
 530                 neigh_event_send(n, NULL);
 531                 neigh_release(n);
 532         }
 533 }
 534
 535 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
 536                                struct mlx5e_tc_flow *flow)
 537 {
 538         struct list_head *next = flow->encap.next;
 539
 540         list_del(&flow->encap);
 541         if (list_empty(next)) {
 542                 struct mlx5e_encap_entry *e;
 543
 544                 e = list_entry(next, struct mlx5e_encap_entry, flows);
 545                 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
 546
 547                 if (e->flags & MLX5_ENCAP_ENTRY_VALID)
 548                         mlx5_encap_dealloc(priv->mdev, e->encap_id);
 549
 550                 hash_del_rcu(&e->encap_hlist);
 551                 kfree(e->encap_header);
 552                 kfree(e);
 553         }
 554 }
 555
 556 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
 557                               struct mlx5e_tc_flow *flow)
 558 {
 559         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
 560                 mlx5e_tc_del_fdb_flow(priv, flow);
 561         else
 562                 mlx5e_tc_del_nic_flow(priv, flow);
 563 }
 564
 565 static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
 566                              struct tc_cls_flower_offload *f)
 567 {
 568         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 569                                        outer_headers);
 570         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 571                                        outer_headers);
 572         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 573                                     misc_parameters);
 574         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 575                                     misc_parameters);
 576
 577         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
 578         MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
 579
 580         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
 581                 struct flow_dissector_key_keyid *key =
 582                         skb_flow_dissector_target(f->dissector,
 583                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
 584                                                   f->key);
 585                 struct flow_dissector_key_keyid *mask =
 586                         skb_flow_dissector_target(f->dissector,
 587                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
 588                                                   f->mask);
 589                 MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
 590                          be32_to_cpu(mask->keyid));
 591                 MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
 592                          be32_to_cpu(key->keyid));
 593         }
 594 }
 595
 596 static int parse_tunnel_attr(struct mlx5e_priv *priv,
 597                              struct mlx5_flow_spec *spec,
 598                              struct tc_cls_flower_offload *f)
 599 {
 600         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 601                                        outer_headers);
 602         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 603                                        outer_headers);
 604
 605         struct flow_dissector_key_control *enc_control =
 606                 skb_flow_dissector_target(f->dissector,
 607                                           FLOW_DISSECTOR_KEY_ENC_CONTROL,
 608                                           f->key);
 609
 610         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
 611                 struct flow_dissector_key_ports *key =
 612                         skb_flow_dissector_target(f->dissector,
 613                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
 614                                                   f->key);
 615                 struct flow_dissector_key_ports *mask =
 616                         skb_flow_dissector_target(f->dissector,
 617                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
 618                                                   f->mask);
 619                 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 620                 struct mlx5e_rep_priv *uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
 621                 struct net_device *up_dev = uplink_rpriv->netdev;
 622                 struct mlx5e_priv *up_priv = netdev_priv(up_dev);
 623
 624                 /* Full udp dst port must be given */
 625                 if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
 626                         goto vxlan_match_offload_err;
 627
 628                 if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->dst)) &&
 629                     MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
 630                         parse_vxlan_attr(spec, f);
 631                 else {
 632                         netdev_warn(priv->netdev,
 633                                     "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
 634                         return -EOPNOTSUPP;
 635                 }
 636
 637                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 638                          udp_dport, ntohs(mask->dst));
 639                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 640                          udp_dport, ntohs(key->dst));
 641
 642                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 643                          udp_sport, ntohs(mask->src));
 644                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 645                          udp_sport, ntohs(key->src));
 646         } else { /* udp dst port must be given */
 647 vxlan_match_offload_err:
 648                 netdev_warn(priv->netdev,
 649                             "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
 650                 return -EOPNOTSUPP;
 651         }
 652
 653         if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
 654                 struct flow_dissector_key_ipv4_addrs *key =
 655                         skb_flow_dissector_target(f->dissector,
 656                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
 657                                                   f->key);
 658                 struct flow_dissector_key_ipv4_addrs *mask =
 659                         skb_flow_dissector_target(f->dissector,
 660                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
 661                                                   f->mask);
 662                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 663                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
 664                          ntohl(mask->src));
 665                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 666                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
 667                          ntohl(key->src));
 668
 669                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 670                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
 671                          ntohl(mask->dst));
 672                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 673                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
 674                          ntohl(key->dst));
 675
 676                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
 677                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
 678         } else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
 679                 struct flow_dissector_key_ipv6_addrs *key =
 680                         skb_flow_dissector_target(f->dissector,
 681                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
 682                                                   f->key);
 683                 struct flow_dissector_key_ipv6_addrs *mask =
 684                         skb_flow_dissector_target(f->dissector,
 685                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
 686                                                   f->mask);
 687
 688                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 689                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 690                        &mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 691                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 692                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 693                        &key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 694
 695                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 696                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 697                        &mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 698                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 699                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 700                        &key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 701
 702                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
 703                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6);
 704         }
 705
 706         /* Enforce DMAC when offloading incoming tunneled flows.
 707          * Flow counters require a match on the DMAC.
 708          */
 709         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
 710         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
 711         ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 712                                      dmac_47_16), priv->netdev->dev_addr);
 713
 714         /* let software handle IP fragments */
 715         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
 716         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
 717
 718         return 0;
 719 }
 720
 721 static int __parse_cls_flower(struct mlx5e_priv *priv,
 722                               struct mlx5_flow_spec *spec,
 723                               struct tc_cls_flower_offload *f,
 724                               u8 *min_inline)
 725 {
 726         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 727                                        outer_headers);
 728         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 729                                        outer_headers);
 730         u16 addr_type = 0;
 731         u8 ip_proto = 0;
 732
 733         *min_inline = MLX5_INLINE_MODE_L2;
 734
 735         if (f->dissector->used_keys &
 736             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
 737               BIT(FLOW_DISSECTOR_KEY_BASIC) |
 738               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
 739               BIT(FLOW_DISSECTOR_KEY_VLAN) |
 740               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
 741               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
 742               BIT(FLOW_DISSECTOR_KEY_PORTS) |
 743               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
 744               BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
 745               BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
 746               BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
 747               BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
 748               BIT(FLOW_DISSECTOR_KEY_TCP) |
 749               BIT(FLOW_DISSECTOR_KEY_IP))) {
 750                 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
 751                             f->dissector->used_keys);
 752                 return -EOPNOTSUPP;
 753         }
 754
 755         if ((dissector_uses_key(f->dissector,
 756                                 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
 757              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
 758              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
 759             dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
 760                 struct flow_dissector_key_control *key =
 761                         skb_flow_dissector_target(f->dissector,
 762                                                   FLOW_DISSECTOR_KEY_ENC_CONTROL,
 763                                                   f->key);
 764                 switch (key->addr_type) {
 765                 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
 766                 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
 767                         if (parse_tunnel_attr(priv, spec, f))
 768                                 return -EOPNOTSUPP;
 769                         break;
 770                 default:
 771                         return -EOPNOTSUPP;
 772                 }
 773
 774                 /* In decap flow, header pointers should point to the inner
 775                  * headers, outer header were already set by parse_tunnel_attr
 776                  */
 777                 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 778                                          inner_headers);
 779                 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 780                                          inner_headers);
 781         }
 782
 783         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
 784                 struct flow_dissector_key_control *key =
 785                         skb_flow_dissector_target(f->dissector,
 786                                                   FLOW_DISSECTOR_KEY_CONTROL,
 787                                                   f->key);
 788
 789                 struct flow_dissector_key_control *mask =
 790                         skb_flow_dissector_target(f->dissector,
 791                                                   FLOW_DISSECTOR_KEY_CONTROL,
 792                                                   f->mask);
 793                 addr_type = key->addr_type;
 794
 795                 if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
 796                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
 797                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
 798                                  key->flags & FLOW_DIS_IS_FRAGMENT);
 799
 800                         /* the HW doesn't need L3 inline to match on frag=no */
 801                         if (key->flags & FLOW_DIS_IS_FRAGMENT)
 802                                 *min_inline = MLX5_INLINE_MODE_IP;
 803                 }
 804         }
 805
 806         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
 807                 struct flow_dissector_key_basic *key =
 808                         skb_flow_dissector_target(f->dissector,
 809                                                   FLOW_DISSECTOR_KEY_BASIC,
 810                                                   f->key);
 811                 struct flow_dissector_key_basic *mask =
 812                         skb_flow_dissector_target(f->dissector,
 813                                                   FLOW_DISSECTOR_KEY_BASIC,
 814                                                   f->mask);
 815                 ip_proto = key->ip_proto;
 816
 817                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
 818                          ntohs(mask->n_proto));
 819                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
 820                          ntohs(key->n_proto));
 821
 822                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
 823                          mask->ip_proto);
 824                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
 825                          key->ip_proto);
 826
 827                 if (mask->ip_proto)
 828                         *min_inline = MLX5_INLINE_MODE_IP;
 829         }
 830
 831         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
 832                 struct flow_dissector_key_eth_addrs *key =
 833                         skb_flow_dissector_target(f->dissector,
 834                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
 835                                                   f->key);
 836                 struct flow_dissector_key_eth_addrs *mask =
 837                         skb_flow_dissector_target(f->dissector,
 838                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
 839                                                   f->mask);
 840
 841                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 842                                              dmac_47_16),
 843                                 mask->dst);
 844                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 845                                              dmac_47_16),
 846                                 key->dst);
 847
 848                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 849                                              smac_47_16),
 850                                 mask->src);
 851                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 852                                              smac_47_16),
 853                                 key->src);
 854         }
 855
 856         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
 857                 struct flow_dissector_key_vlan *key =
 858                         skb_flow_dissector_target(f->dissector,
 859                                                   FLOW_DISSECTOR_KEY_VLAN,
 860                                                   f->key);
 861                 struct flow_dissector_key_vlan *mask =
 862                         skb_flow_dissector_target(f->dissector,
 863                                                   FLOW_DISSECTOR_KEY_VLAN,
 864                                                   f->mask);
 865                 if (mask->vlan_id || mask->vlan_priority) {
 866                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
 867                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1);
 868
 869                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
 870                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
 871
 872                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
 873                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
 874                 }
 875         }
 876
 877         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
 878                 struct flow_dissector_key_ipv4_addrs *key =
 879                         skb_flow_dissector_target(f->dissector,
 880                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
 881                                                   f->key);
 882                 struct flow_dissector_key_ipv4_addrs *mask =
 883                         skb_flow_dissector_target(f->dissector,
 884                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
 885                                                   f->mask);
 886
 887                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 888                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
 889                        &mask->src, sizeof(mask->src));
 890                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 891                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
 892                        &key->src, sizeof(key->src));
 893                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 894                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
 895                        &mask->dst, sizeof(mask->dst));
 896                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 897                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
 898                        &key->dst, sizeof(key->dst));
 899
 900                 if (mask->src || mask->dst)
 901                         *min_inline = MLX5_INLINE_MODE_IP;
 902         }
 903
 904         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
 905                 struct flow_dissector_key_ipv6_addrs *key =
 906                         skb_flow_dissector_target(f->dissector,
 907                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
 908                                                   f->key);
 909                 struct flow_dissector_key_ipv6_addrs *mask =
 910                         skb_flow_dissector_target(f->dissector,
 911                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
 912                                                   f->mask);
 913
 914                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 915                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 916                        &mask->src, sizeof(mask->src));
 917                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 918                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 919                        &key->src, sizeof(key->src));
 920
 921                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 922                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 923                        &mask->dst, sizeof(mask->dst));
 924                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 925                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 926                        &key->dst, sizeof(key->dst));
 927
 928                 if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
 929                     ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
 930                         *min_inline = MLX5_INLINE_MODE_IP;
 931         }
 932
 933         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_IP)) {
 934                 struct flow_dissector_key_ip *key =
 935                         skb_flow_dissector_target(f->dissector,
 936                                                   FLOW_DISSECTOR_KEY_IP,
 937                                                   f->key);
 938                 struct flow_dissector_key_ip *mask =
 939                         skb_flow_dissector_target(f->dissector,
 940                                                   FLOW_DISSECTOR_KEY_IP,
 941                                                   f->mask);
 942
 943                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, mask->tos & 0x3);
 944                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, key->tos & 0x3);
 945
 946                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, mask->tos >> 2);
 947                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, key->tos  >> 2);
 948
 949                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, mask->ttl);
 950                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, key->ttl);
 951
 952                 if (mask->ttl &&
 953                     !MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
 954                                                 ft_field_support.outer_ipv4_ttl))
 955                         return -EOPNOTSUPP;
 956
 957                 if (mask->tos || mask->ttl)
 958                         *min_inline = MLX5_INLINE_MODE_IP;
 959         }
 960
 961         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
 962                 struct flow_dissector_key_ports *key =
 963                         skb_flow_dissector_target(f->dissector,
 964                                                   FLOW_DISSECTOR_KEY_PORTS,
 965                                                   f->key);
 966                 struct flow_dissector_key_ports *mask =
 967                         skb_flow_dissector_target(f->dissector,
 968                                                   FLOW_DISSECTOR_KEY_PORTS,
 969                                                   f->mask);
 970                 switch (ip_proto) {
 971                 case IPPROTO_TCP:
 972                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 973                                  tcp_sport, ntohs(mask->src));
 974                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 975                                  tcp_sport, ntohs(key->src));
 976
 977                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 978                                  tcp_dport, ntohs(mask->dst));
 979                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 980                                  tcp_dport, ntohs(key->dst));
 981                         break;
 982
 983                 case IPPROTO_UDP:
 984                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 985                                  udp_sport, ntohs(mask->src));
 986                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 987                                  udp_sport, ntohs(key->src));
 988
 989                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 990                                  udp_dport, ntohs(mask->dst));
 991                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 992                                  udp_dport, ntohs(key->dst));
 993                         break;
 994                 default:
 995                         netdev_err(priv->netdev,
 996                                    "Only UDP and TCP transport are supported\n");
 997                         return -EINVAL;
 998                 }
 999
1000                 if (mask->src || mask->dst)
1001                         *min_inline = MLX5_INLINE_MODE_TCP_UDP;
1002         }
1003
1004         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_TCP)) {
1005                 struct flow_dissector_key_tcp *key =
1006                         skb_flow_dissector_target(f->dissector,
1007                                                   FLOW_DISSECTOR_KEY_TCP,
1008                                                   f->key);
1009                 struct flow_dissector_key_tcp *mask =
1010                         skb_flow_dissector_target(f->dissector,
1011                                                   FLOW_DISSECTOR_KEY_TCP,
1012                                                   f->mask);
1013
1014                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
1015                          ntohs(mask->flags));
1016                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
1017                          ntohs(key->flags));
1018
1019                 if (mask->flags)
1020                         *min_inline = MLX5_INLINE_MODE_TCP_UDP;
1021         }
1022
1023         return 0;
1024 }
1025
1026 static int parse_cls_flower(struct mlx5e_priv *priv,
1027                             struct mlx5e_tc_flow *flow,
1028                             struct mlx5_flow_spec *spec,
1029                             struct tc_cls_flower_offload *f)
1030 {
1031         struct mlx5_core_dev *dev = priv->mdev;
1032         struct mlx5_eswitch *esw = dev->priv.eswitch;
1033         struct mlx5e_rep_priv *rpriv = priv->ppriv;
1034         struct mlx5_eswitch_rep *rep;
1035         u8 min_inline;
1036         int err;
1037
1038         err = __parse_cls_flower(priv, spec, f, &min_inline);
1039
1040         if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH)) {
1041                 rep = rpriv->rep;
1042                 if (rep->vport != FDB_UPLINK_VPORT &&
1043                     (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
1044                     esw->offloads.inline_mode < min_inline)) {
1045                         netdev_warn(priv->netdev,
1046                                     "Flow is not offloaded due to min inline setting, required %d actual %d\n",
1047                                     min_inline, esw->offloads.inline_mode);
1048                         return -EOPNOTSUPP;
1049                 }
1050         }
1051
1052         return err;
1053 }
1054
1055 struct pedit_headers {
1056         struct ethhdr  eth;
1057         struct iphdr   ip4;
1058         struct ipv6hdr ip6;
1059         struct tcphdr  tcp;
1060         struct udphdr  udp;
1061 };
1062
1063 static int pedit_header_offsets[] = {
1064         [TCA_PEDIT_KEY_EX_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth),
1065         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4),
1066         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6),
1067         [TCA_PEDIT_KEY_EX_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp),
1068         [TCA_PEDIT_KEY_EX_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp),
1069 };
1070
1071 #define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype])
1072
1073 static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset,
1074                          struct pedit_headers *masks,
1075                          struct pedit_headers *vals)
1076 {
1077         u32 *curr_pmask, *curr_pval;
1078
1079         if (hdr_type >= __PEDIT_HDR_TYPE_MAX)
1080                 goto out_err;
1081
1082         curr_pmask = (u32 *)(pedit_header(masks, hdr_type) + offset);
1083         curr_pval  = (u32 *)(pedit_header(vals, hdr_type) + offset);
1084
1085         if (*curr_pmask & mask)  /* disallow acting twice on the same location */
1086                 goto out_err;
1087
1088         *curr_pmask |= mask;
1089         *curr_pval  |= (val & mask);
1090
1091         return 0;
1092
1093 out_err:
1094         return -EOPNOTSUPP;
1095 }
1096
1097 struct mlx5_fields {
1098         u8  field;
1099         u8  size;
1100         u32 offset;
1101 };
1102
1103 #define OFFLOAD(fw_field, size, field, off) \
1104                 {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, size, offsetof(struct pedit_headers, field) + (off)}
1105
1106 static struct mlx5_fields fields[] = {
1107         OFFLOAD(DMAC_47_16, 4, eth.h_dest[0], 0),
1108         OFFLOAD(DMAC_47_16, 4, eth.h_dest[0], 0),
1109         OFFLOAD(DMAC_15_0,  2, eth.h_dest[4], 0),
1110         OFFLOAD(SMAC_47_16, 4, eth.h_source[0], 0),
1111         OFFLOAD(SMAC_15_0,  2, eth.h_source[4], 0),
1112         OFFLOAD(ETHERTYPE,  2, eth.h_proto, 0),
1113
1114         OFFLOAD(IP_TTL, 1, ip4.ttl,   0),
1115         OFFLOAD(SIPV4,  4, ip4.saddr, 0),
1116         OFFLOAD(DIPV4,  4, ip4.daddr, 0),
1117
1118         OFFLOAD(SIPV6_127_96, 4, ip6.saddr.s6_addr32[0], 0),
1119         OFFLOAD(SIPV6_95_64,  4, ip6.saddr.s6_addr32[1], 0),
1120         OFFLOAD(SIPV6_63_32,  4, ip6.saddr.s6_addr32[2], 0),
1121         OFFLOAD(SIPV6_31_0,   4, ip6.saddr.s6_addr32[3], 0),
1122         OFFLOAD(DIPV6_127_96, 4, ip6.daddr.s6_addr32[0], 0),
1123         OFFLOAD(DIPV6_95_64,  4, ip6.daddr.s6_addr32[1], 0),
1124         OFFLOAD(DIPV6_63_32,  4, ip6.daddr.s6_addr32[2], 0),
1125         OFFLOAD(DIPV6_31_0,   4, ip6.daddr.s6_addr32[3], 0),
1126         OFFLOAD(IPV6_HOPLIMIT, 1, ip6.hop_limit, 0),
1127
1128         OFFLOAD(TCP_SPORT, 2, tcp.source,  0),
1129         OFFLOAD(TCP_DPORT, 2, tcp.dest,    0),
1130         OFFLOAD(TCP_FLAGS, 1, tcp.ack_seq, 5),
1131
1132         OFFLOAD(UDP_SPORT, 2, udp.source, 0),
1133         OFFLOAD(UDP_DPORT, 2, udp.dest,   0),
1134 };
1135
1136 /* On input attr->num_mod_hdr_actions tells how many HW actions can be parsed at
1137  * max from the SW pedit action. On success, it says how many HW actions were
1138  * actually parsed.
1139  */
1140 static int offload_pedit_fields(struct pedit_headers *masks,
1141                                 struct pedit_headers *vals,
1142                                 struct mlx5e_tc_flow_parse_attr *parse_attr)
1143 {
1144         struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
1145         int i, action_size, nactions, max_actions, first, last, next_z;
1146         void *s_masks_p, *a_masks_p, *vals_p;
1147         struct mlx5_fields *f;
1148         u8 cmd, field_bsize;
1149         u32 s_mask, a_mask;
1150         unsigned long mask;
1151         __be32 mask_be32;
1152         __be16 mask_be16;
1153         void *action;
1154
1155         set_masks = &masks[TCA_PEDIT_KEY_EX_CMD_SET];
1156         add_masks = &masks[TCA_PEDIT_KEY_EX_CMD_ADD];
1157         set_vals = &vals[TCA_PEDIT_KEY_EX_CMD_SET];
1158         add_vals = &vals[TCA_PEDIT_KEY_EX_CMD_ADD];
1159
1160         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
1161         action = parse_attr->mod_hdr_actions;
1162         max_actions = parse_attr->num_mod_hdr_actions;
1163         nactions = 0;
1164
1165         for (i = 0; i < ARRAY_SIZE(fields); i++) {
1166                 f = &fields[i];
1167                 /* avoid seeing bits set from previous iterations */
1168                 s_mask = 0;
1169                 a_mask = 0;
1170
1171                 s_masks_p = (void *)set_masks + f->offset;
1172                 a_masks_p = (void *)add_masks + f->offset;
1173
1174                 memcpy(&s_mask, s_masks_p, f->size);
1175                 memcpy(&a_mask, a_masks_p, f->size);
1176
1177                 if (!s_mask && !a_mask) /* nothing to offload here */
1178                         continue;
1179
1180                 if (s_mask && a_mask) {
1181                         printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field);
1182                         return -EOPNOTSUPP;
1183                 }
1184
1185                 if (nactions == max_actions) {
1186                         printk(KERN_WARNING "mlx5: parsed %d pedit actions, can't do more\n", nactions);
1187                         return -EOPNOTSUPP;
1188                 }
1189
1190                 if (s_mask) {
1191                         cmd  = MLX5_ACTION_TYPE_SET;
1192                         mask = s_mask;
1193                         vals_p = (void *)set_vals + f->offset;
1194                         /* clear to denote we consumed this field */
1195                         memset(s_masks_p, 0, f->size);
1196                 } else {
1197                         cmd  = MLX5_ACTION_TYPE_ADD;
1198                         mask = a_mask;
1199                         vals_p = (void *)add_vals + f->offset;
1200                         /* clear to denote we consumed this field */
1201                         memset(a_masks_p, 0, f->size);
1202                 }
1203
1204                 field_bsize = f->size * BITS_PER_BYTE;
1205
1206                 if (field_bsize == 32) {
1207                         mask_be32 = *(__be32 *)&mask;
1208                         mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32));
1209                 } else if (field_bsize == 16) {
1210                         mask_be16 = *(__be16 *)&mask;
1211                         mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16));
1212                 }
1213
1214                 first = find_first_bit(&mask, field_bsize);
1215                 next_z = find_next_zero_bit(&mask, field_bsize, first);
1216                 last  = find_last_bit(&mask, field_bsize);
1217                 if (first < next_z && next_z < last) {
1218                         printk(KERN_WARNING "mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n",
1219                                mask);
1220                         return -EOPNOTSUPP;
1221                 }
1222
1223                 MLX5_SET(set_action_in, action, action_type, cmd);
1224                 MLX5_SET(set_action_in, action, field, f->field);
1225
1226                 if (cmd == MLX5_ACTION_TYPE_SET) {
1227                         MLX5_SET(set_action_in, action, offset, first);
1228                         /* length is num of bits to be written, zero means length of 32 */
1229                         MLX5_SET(set_action_in, action, length, (last - first + 1));
1230                 }
1231
1232                 if (field_bsize == 32)
1233                         MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first);
1234                 else if (field_bsize == 16)
1235                         MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first);
1236                 else if (field_bsize == 8)
1237                         MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first);
1238
1239                 action += action_size;
1240                 nactions++;
1241         }
1242
1243         parse_attr->num_mod_hdr_actions = nactions;
1244         return 0;
1245 }
1246
1247 static int alloc_mod_hdr_actions(struct mlx5e_priv *priv,
1248                                  const struct tc_action *a, int namespace,
1249                                  struct mlx5e_tc_flow_parse_attr *parse_attr)
1250 {
1251         int nkeys, action_size, max_actions;
1252
1253         nkeys = tcf_pedit_nkeys(a);
1254         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
1255
1256         if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
1257                 max_actions = MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, max_modify_header_actions);
1258         else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
1259                 max_actions = MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, max_modify_header_actions);
1260
1261         /* can get up to crazingly 16 HW actions in 32 bits pedit SW key */
1262         max_actions = min(max_actions, nkeys * 16);
1263
1264         parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL);
1265         if (!parse_attr->mod_hdr_actions)
1266                 return -ENOMEM;
1267
1268         parse_attr->num_mod_hdr_actions = max_actions;
1269         return 0;
1270 }
1271
1272 static const struct pedit_headers zero_masks = {};
1273
1274 static int parse_tc_pedit_action(struct mlx5e_priv *priv,
1275                                  const struct tc_action *a, int namespace,
1276                                  struct mlx5e_tc_flow_parse_attr *parse_attr)
1277 {
1278         struct pedit_headers masks[__PEDIT_CMD_MAX], vals[__PEDIT_CMD_MAX], *cmd_masks;
1279         int nkeys, i, err = -EOPNOTSUPP;
1280         u32 mask, val, offset;
1281         u8 cmd, htype;
1282
1283         nkeys = tcf_pedit_nkeys(a);
1284
1285         memset(masks, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1286         memset(vals,  0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1287
1288         for (i = 0; i < nkeys; i++) {
1289                 htype = tcf_pedit_htype(a, i);
1290                 cmd = tcf_pedit_cmd(a, i);
1291                 err = -EOPNOTSUPP; /* can't be all optimistic */
1292
1293                 if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK) {
1294                         printk(KERN_WARNING "mlx5: legacy pedit isn't offloaded\n");
1295                         goto out_err;
1296                 }
1297
1298                 if (cmd != TCA_PEDIT_KEY_EX_CMD_SET && cmd != TCA_PEDIT_KEY_EX_CMD_ADD) {
1299                         printk(KERN_WARNING "mlx5: pedit cmd %d isn't offloaded\n", cmd);
1300                         goto out_err;
1301                 }
1302
1303                 mask = tcf_pedit_mask(a, i);
1304                 val = tcf_pedit_val(a, i);
1305                 offset = tcf_pedit_offset(a, i);
1306
1307                 err = set_pedit_val(htype, ~mask, val, offset, &masks[cmd], &vals[cmd]);
1308                 if (err)
1309                         goto out_err;
1310         }
1311
1312         err = alloc_mod_hdr_actions(priv, a, namespace, parse_attr);
1313         if (err)
1314                 goto out_err;
1315
1316         err = offload_pedit_fields(masks, vals, parse_attr);
1317         if (err < 0)
1318                 goto out_dealloc_parsed_actions;
1319
1320         for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
1321                 cmd_masks = &masks[cmd];
1322                 if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
1323                         printk(KERN_WARNING "mlx5: attempt to offload an unsupported field (cmd %d)\n",
1324                                cmd);
1325                         print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
1326                                        16, 1, cmd_masks, sizeof(zero_masks), true);
1327                         err = -EOPNOTSUPP;
1328                         goto out_dealloc_parsed_actions;
1329                 }
1330         }
1331
1332         return 0;
1333
1334 out_dealloc_parsed_actions:
1335         kfree(parse_attr->mod_hdr_actions);
1336 out_err:
1337         return err;
1338 }
1339
1340 static bool csum_offload_supported(struct mlx5e_priv *priv, u32 action, u32 update_flags)
1341 {
1342         u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP |
1343                          TCA_CSUM_UPDATE_FLAG_UDP;
1344
1345         /*  The HW recalcs checksums only if re-writing headers */
1346         if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) {
1347                 netdev_warn(priv->netdev,
1348                             "TC csum action is only offloaded with pedit\n");
1349                 return false;
1350         }
1351
1352         if (update_flags & ~prot_flags) {
1353                 netdev_warn(priv->netdev,
1354                             "can't offload TC csum action for some header/s - flags %#x\n",
1355                             update_flags);
1356                 return false;
1357         }
1358
1359         return true;
1360 }
1361
1362 static bool modify_header_match_supported(struct mlx5_flow_spec *spec,
1363                                           struct tcf_exts *exts)
1364 {
1365         const struct tc_action *a;
1366         bool modify_ip_header;
1367         LIST_HEAD(actions);
1368         u8 htype, ip_proto;
1369         void *headers_v;
1370         u16 ethertype;
1371         int nkeys, i;
1372
1373         headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
1374         ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
1375
1376         /* for non-IP we only re-write MACs, so we're okay */
1377         if (ethertype != ETH_P_IP && ethertype != ETH_P_IPV6)
1378                 goto out_ok;
1379
1380         modify_ip_header = false;
1381         tcf_exts_to_list(exts, &actions);
1382         list_for_each_entry(a, &actions, list) {
1383                 if (!is_tcf_pedit(a))
1384                         continue;
1385
1386                 nkeys = tcf_pedit_nkeys(a);
1387                 for (i = 0; i < nkeys; i++) {
1388                         htype = tcf_pedit_htype(a, i);
1389                         if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_IP4 ||
1390                             htype == TCA_PEDIT_KEY_EX_HDR_TYPE_IP6) {
1391                                 modify_ip_header = true;
1392                                 break;
1393                         }
1394                 }
1395         }
1396
1397         ip_proto = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol);
1398         if (modify_ip_header && ip_proto != IPPROTO_TCP && ip_proto != IPPROTO_UDP) {
1399                 pr_info("can't offload re-write of ip proto %d\n", ip_proto);
1400                 return false;
1401         }
1402
1403 out_ok:
1404         return true;
1405 }
1406
1407 static bool actions_match_supported(struct mlx5e_priv *priv,
1408                                     struct tcf_exts *exts,
1409                                     struct mlx5e_tc_flow_parse_attr *parse_attr,
1410                                     struct mlx5e_tc_flow *flow)
1411 {
1412         u32 actions;
1413
1414         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
1415                 actions = flow->esw_attr->action;
1416         else
1417                 actions = flow->nic_attr->action;
1418
1419         if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
1420                 return modify_header_match_supported(&parse_attr->spec, exts);
1421
1422         return true;
1423 }
1424
1425 static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1426                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
1427                                 struct mlx5e_tc_flow *flow)
1428 {
1429         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
1430         const struct tc_action *a;
1431         LIST_HEAD(actions);
1432         int err;
1433
1434         if (!tcf_exts_has_actions(exts))
1435                 return -EINVAL;
1436
1437         attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
1438         attr->action = 0;
1439
1440         tcf_exts_to_list(exts, &actions);
1441         list_for_each_entry(a, &actions, list) {
1442                 if (is_tcf_gact_shot(a)) {
1443                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
1444                         if (MLX5_CAP_FLOWTABLE(priv->mdev,
1445                                                flow_table_properties_nic_receive.flow_counter))
1446                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
1447                         continue;
1448                 }
1449
1450                 if (is_tcf_pedit(a)) {
1451                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_KERNEL,
1452                                                     parse_attr);
1453                         if (err)
1454                                 return err;
1455
1456                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR |
1457                                         MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1458                         continue;
1459                 }
1460
1461                 if (is_tcf_csum(a)) {
1462                         if (csum_offload_supported(priv, attr->action,
1463                                                    tcf_csum_update_flags(a)))
1464                                 continue;
1465
1466                         return -EOPNOTSUPP;
1467                 }
1468
1469                 if (is_tcf_skbedit_mark(a)) {
1470                         u32 mark = tcf_skbedit_mark(a);
1471
1472                         if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
1473                                 netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
1474                                             mark);
1475                                 return -EINVAL;
1476                         }
1477
1478                         attr->flow_tag = mark;
1479                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1480                         continue;
1481                 }
1482
1483                 return -EINVAL;
1484         }
1485
1486         if (!actions_match_supported(priv, exts, parse_attr, flow))
1487                 return -EOPNOTSUPP;
1488
1489         return 0;
1490 }
1491
1492 static inline int cmp_encap_info(struct ip_tunnel_key *a,
1493                                  struct ip_tunnel_key *b)
1494 {
1495         return memcmp(a, b, sizeof(*a));
1496 }
1497
1498 static inline int hash_encap_info(struct ip_tunnel_key *key)
1499 {
1500         return jhash(key, sizeof(*key), 0);
1501 }
1502
1503 static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
1504                                    struct net_device *mirred_dev,
1505                                    struct net_device **out_dev,
1506                                    struct flowi4 *fl4,
1507                                    struct neighbour **out_n,
1508                                    int *out_ttl)
1509 {
1510         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1511         struct mlx5e_rep_priv *uplink_rpriv;
1512         struct rtable *rt;
1513         struct neighbour *n = NULL;
1514
1515 #if IS_ENABLED(CONFIG_INET)
1516         int ret;
1517
1518         rt = ip_route_output_key(dev_net(mirred_dev), fl4);
1519         ret = PTR_ERR_OR_ZERO(rt);
1520         if (ret)
1521                 return ret;
1522 #else
1523         return -EOPNOTSUPP;
1524 #endif
1525         uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
1526         /* if the egress device isn't on the same HW e-switch, we use the uplink */
1527         if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
1528                 *out_dev = uplink_rpriv->netdev;
1529         else
1530                 *out_dev = rt->dst.dev;
1531
1532         *out_ttl = ip4_dst_hoplimit(&rt->dst);
1533         n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
1534         ip_rt_put(rt);
1535         if (!n)
1536                 return -ENOMEM;
1537
1538         *out_n = n;
1539         return 0;
1540 }
1541
1542 static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
1543                                    struct net_device *mirred_dev,
1544                                    struct net_device **out_dev,
1545                                    struct flowi6 *fl6,
1546                                    struct neighbour **out_n,
1547                                    int *out_ttl)
1548 {
1549         struct neighbour *n = NULL;
1550         struct dst_entry *dst;
1551
1552 #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
1553         struct mlx5e_rep_priv *uplink_rpriv;
1554         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1555         int ret;
1556
1557         ret = ipv6_stub->ipv6_dst_lookup(dev_net(mirred_dev), NULL, &dst,
1558                                          fl6);
1559         if (ret < 0)
1560                 return ret;
1561
1562         *out_ttl = ip6_dst_hoplimit(dst);
1563
1564         uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
1565         /* if the egress device isn't on the same HW e-switch, we use the uplink */
1566         if (!switchdev_port_same_parent_id(priv->netdev, dst->dev))
1567                 *out_dev = uplink_rpriv->netdev;
1568         else
1569                 *out_dev = dst->dev;
1570 #else
1571         return -EOPNOTSUPP;
1572 #endif
1573
1574         n = dst_neigh_lookup(dst, &fl6->daddr);
1575         dst_release(dst);
1576         if (!n)
1577                 return -ENOMEM;
1578
1579         *out_n = n;
1580         return 0;
1581 }
1582
1583 static void gen_vxlan_header_ipv4(struct net_device *out_dev,
1584                                   char buf[], int encap_size,
1585                                   unsigned char h_dest[ETH_ALEN],
1586                                   int ttl,
1587                                   __be32 daddr,
1588                                   __be32 saddr,
1589                                   __be16 udp_dst_port,
1590                                   __be32 vx_vni)
1591 {
1592         struct ethhdr *eth = (struct ethhdr *)buf;
1593         struct iphdr  *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
1594         struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
1595         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
1596
1597         memset(buf, 0, encap_size);
1598
1599         ether_addr_copy(eth->h_dest, h_dest);
1600         ether_addr_copy(eth->h_source, out_dev->dev_addr);
1601         eth->h_proto = htons(ETH_P_IP);
1602
1603         ip->daddr = daddr;
1604         ip->saddr = saddr;
1605
1606         ip->ttl = ttl;
1607         ip->protocol = IPPROTO_UDP;
1608         ip->version = 0x4;
1609         ip->ihl = 0x5;
1610
1611         udp->dest = udp_dst_port;
1612         vxh->vx_flags = VXLAN_HF_VNI;
1613         vxh->vx_vni = vxlan_vni_field(vx_vni);
1614 }
1615
1616 static void gen_vxlan_header_ipv6(struct net_device *out_dev,
1617                                   char buf[], int encap_size,
1618                                   unsigned char h_dest[ETH_ALEN],
1619                                   int ttl,
1620                                   struct in6_addr *daddr,
1621                                   struct in6_addr *saddr,
1622                                   __be16 udp_dst_port,
1623                                   __be32 vx_vni)
1624 {
1625         struct ethhdr *eth = (struct ethhdr *)buf;
1626         struct ipv6hdr *ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr));
1627         struct udphdr *udp = (struct udphdr *)((char *)ip6h + sizeof(struct ipv6hdr));
1628         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
1629
1630         memset(buf, 0, encap_size);
1631
1632         ether_addr_copy(eth->h_dest, h_dest);
1633         ether_addr_copy(eth->h_source, out_dev->dev_addr);
1634         eth->h_proto = htons(ETH_P_IPV6);
1635
1636         ip6_flow_hdr(ip6h, 0, 0);
1637         /* the HW fills up ipv6 payload len */
1638         ip6h->nexthdr     = IPPROTO_UDP;
1639         ip6h->hop_limit   = ttl;
1640         ip6h->daddr       = *daddr;
1641         ip6h->saddr       = *saddr;
1642
1643         udp->dest = udp_dst_port;
1644         vxh->vx_flags = VXLAN_HF_VNI;
1645         vxh->vx_vni = vxlan_vni_field(vx_vni);
1646 }
1647
1648 static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
1649                                           struct net_device *mirred_dev,
1650                                           struct mlx5e_encap_entry *e)
1651 {
1652         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
1653         int ipv4_encap_size = ETH_HLEN + sizeof(struct iphdr) + VXLAN_HLEN;
1654         struct ip_tunnel_key *tun_key = &e->tun_info.key;
1655         struct net_device *out_dev;
1656         struct neighbour *n = NULL;
1657         struct flowi4 fl4 = {};
1658         char *encap_header;
1659         int ttl, err;
1660         u8 nud_state;
1661
1662         if (max_encap_size < ipv4_encap_size) {
1663                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
1664                                ipv4_encap_size, max_encap_size);
1665                 return -EOPNOTSUPP;
1666         }
1667
1668         encap_header = kzalloc(ipv4_encap_size, GFP_KERNEL);
1669         if (!encap_header)
1670                 return -ENOMEM;
1671
1672         switch (e->tunnel_type) {
1673         case MLX5_HEADER_TYPE_VXLAN:
1674                 fl4.flowi4_proto = IPPROTO_UDP;
1675                 fl4.fl4_dport = tun_key->tp_dst;
1676                 break;
1677         default:
1678                 err = -EOPNOTSUPP;
1679                 goto free_encap;
1680         }
1681         fl4.flowi4_tos = tun_key->tos;
1682         fl4.daddr = tun_key->u.ipv4.dst;
1683         fl4.saddr = tun_key->u.ipv4.src;
1684
1685         err = mlx5e_route_lookup_ipv4(priv, mirred_dev, &out_dev,
1686                                       &fl4, &n, &ttl);
1687         if (err)
1688                 goto free_encap;
1689
1690         /* used by mlx5e_detach_encap to lookup a neigh hash table
1691          * entry in the neigh hash table when a user deletes a rule
1692          */
1693         e->m_neigh.dev = n->dev;
1694         e->m_neigh.family = n->ops->family;
1695         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
1696         e->out_dev = out_dev;
1697
1698         /* It's importent to add the neigh to the hash table before checking
1699          * the neigh validity state. So if we'll get a notification, in case the
1700          * neigh changes it's validity state, we would find the relevant neigh
1701          * in the hash.
1702          */
1703         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
1704         if (err)
1705                 goto free_encap;
1706
1707         read_lock_bh(&n->lock);
1708         nud_state = n->nud_state;
1709         ether_addr_copy(e->h_dest, n->ha);
1710         read_unlock_bh(&n->lock);
1711
1712         switch (e->tunnel_type) {
1713         case MLX5_HEADER_TYPE_VXLAN:
1714                 gen_vxlan_header_ipv4(out_dev, encap_header,
1715                                       ipv4_encap_size, e->h_dest, ttl,
1716                                       fl4.daddr,
1717                                       fl4.saddr, tun_key->tp_dst,
1718                                       tunnel_id_to_key32(tun_key->tun_id));
1719                 break;
1720         default:
1721                 err = -EOPNOTSUPP;
1722                 goto destroy_neigh_entry;
1723         }
1724         e->encap_size = ipv4_encap_size;
1725         e->encap_header = encap_header;
1726
1727         if (!(nud_state & NUD_VALID)) {
1728                 neigh_event_send(n, NULL);
1729                 err = -EAGAIN;
1730                 goto out;
1731         }
1732
1733         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
1734                                ipv4_encap_size, encap_header, &e->encap_id);
1735         if (err)
1736                 goto destroy_neigh_entry;
1737
1738         e->flags |= MLX5_ENCAP_ENTRY_VALID;
1739         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
1740         neigh_release(n);
1741         return err;
1742
1743 destroy_neigh_entry:
1744         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1745 free_encap:
1746         kfree(encap_header);
1747 out:
1748         if (n)
1749                 neigh_release(n);
1750         return err;
1751 }
1752
1753 static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
1754                                           struct net_device *mirred_dev,
1755                                           struct mlx5e_encap_entry *e)
1756 {
1757         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
1758         int ipv6_encap_size = ETH_HLEN + sizeof(struct ipv6hdr) + VXLAN_HLEN;
1759         struct ip_tunnel_key *tun_key = &e->tun_info.key;
1760         struct net_device *out_dev;
1761         struct neighbour *n = NULL;
1762         struct flowi6 fl6 = {};
1763         char *encap_header;
1764         int err, ttl = 0;
1765         u8 nud_state;
1766
1767         if (max_encap_size < ipv6_encap_size) {
1768                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
1769                                ipv6_encap_size, max_encap_size);
1770                 return -EOPNOTSUPP;
1771         }
1772
1773         encap_header = kzalloc(ipv6_encap_size, GFP_KERNEL);
1774         if (!encap_header)
1775                 return -ENOMEM;
1776
1777         switch (e->tunnel_type) {
1778         case MLX5_HEADER_TYPE_VXLAN:
1779                 fl6.flowi6_proto = IPPROTO_UDP;
1780                 fl6.fl6_dport = tun_key->tp_dst;
1781                 break;
1782         default:
1783                 err = -EOPNOTSUPP;
1784                 goto free_encap;
1785         }
1786
1787         fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label);
1788         fl6.daddr = tun_key->u.ipv6.dst;
1789         fl6.saddr = tun_key->u.ipv6.src;
1790
1791         err = mlx5e_route_lookup_ipv6(priv, mirred_dev, &out_dev,
1792                                       &fl6, &n, &ttl);
1793         if (err)
1794                 goto free_encap;
1795
1796         /* used by mlx5e_detach_encap to lookup a neigh hash table
1797          * entry in the neigh hash table when a user deletes a rule
1798          */
1799         e->m_neigh.dev = n->dev;
1800         e->m_neigh.family = n->ops->family;
1801         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
1802         e->out_dev = out_dev;
1803
1804         /* It's importent to add the neigh to the hash table before checking
1805          * the neigh validity state. So if we'll get a notification, in case the
1806          * neigh changes it's validity state, we would find the relevant neigh
1807          * in the hash.
1808          */
1809         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
1810         if (err)
1811                 goto free_encap;
1812
1813         read_lock_bh(&n->lock);
1814         nud_state = n->nud_state;
1815         ether_addr_copy(e->h_dest, n->ha);
1816         read_unlock_bh(&n->lock);
1817
1818         switch (e->tunnel_type) {
1819         case MLX5_HEADER_TYPE_VXLAN:
1820                 gen_vxlan_header_ipv6(out_dev, encap_header,
1821                                       ipv6_encap_size, e->h_dest, ttl,
1822                                       &fl6.daddr,
1823                                       &fl6.saddr, tun_key->tp_dst,
1824                                       tunnel_id_to_key32(tun_key->tun_id));
1825                 break;
1826         default:
1827                 err = -EOPNOTSUPP;
1828                 goto destroy_neigh_entry;
1829         }
1830
1831         e->encap_size = ipv6_encap_size;
1832         e->encap_header = encap_header;
1833
1834         if (!(nud_state & NUD_VALID)) {
1835                 neigh_event_send(n, NULL);
1836                 err = -EAGAIN;
1837                 goto out;
1838         }
1839
1840         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
1841                                ipv6_encap_size, encap_header, &e->encap_id);
1842         if (err)
1843                 goto destroy_neigh_entry;
1844
1845         e->flags |= MLX5_ENCAP_ENTRY_VALID;
1846         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
1847         neigh_release(n);
1848         return err;
1849
1850 destroy_neigh_entry:
1851         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1852 free_encap:
1853         kfree(encap_header);
1854 out:
1855         if (n)
1856                 neigh_release(n);
1857         return err;
1858 }
1859
1860 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
1861                               struct ip_tunnel_info *tun_info,
1862                               struct net_device *mirred_dev,
1863                               struct net_device **encap_dev,
1864                               struct mlx5e_tc_flow *flow)
1865 {
1866         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1867         struct mlx5e_rep_priv *uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw,
1868                                                                            REP_ETH);
1869         struct net_device *up_dev = uplink_rpriv->netdev;
1870         unsigned short family = ip_tunnel_info_af(tun_info);
1871         struct mlx5e_priv *up_priv = netdev_priv(up_dev);
1872         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1873         struct ip_tunnel_key *key = &tun_info->key;
1874         struct mlx5e_encap_entry *e;
1875         int tunnel_type, err = 0;
1876         uintptr_t hash_key;
1877         bool found = false;
1878
1879         /* udp dst port must be set */
1880         if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
1881                 goto vxlan_encap_offload_err;
1882
1883         /* setting udp src port isn't supported */
1884         if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
1885 vxlan_encap_offload_err:
1886                 netdev_warn(priv->netdev,
1887                             "must set udp dst port and not set udp src port\n");
1888                 return -EOPNOTSUPP;
1889         }
1890
1891         if (mlx5e_vxlan_lookup_port(up_priv, be16_to_cpu(key->tp_dst)) &&
1892             MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
1893                 tunnel_type = MLX5_HEADER_TYPE_VXLAN;
1894         } else {
1895                 netdev_warn(priv->netdev,
1896                             "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
1897                 return -EOPNOTSUPP;
1898         }
1899
1900         hash_key = hash_encap_info(key);
1901
1902         hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
1903                                    encap_hlist, hash_key) {
1904                 if (!cmp_encap_info(&e->tun_info.key, key)) {
1905                         found = true;
1906                         break;
1907                 }
1908         }
1909
1910         /* must verify if encap is valid or not */
1911         if (found)
1912                 goto attach_flow;
1913
1914         e = kzalloc(sizeof(*e), GFP_KERNEL);
1915         if (!e)
1916                 return -ENOMEM;
1917
1918         e->tun_info = *tun_info;
1919         e->tunnel_type = tunnel_type;
1920         INIT_LIST_HEAD(&e->flows);
1921
1922         if (family == AF_INET)
1923                 err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e);
1924         else if (family == AF_INET6)
1925                 err = mlx5e_create_encap_header_ipv6(priv, mirred_dev, e);
1926
1927         if (err && err != -EAGAIN)
1928                 goto out_err;
1929
1930         hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
1931
1932 attach_flow:
1933         list_add(&flow->encap, &e->flows);
1934         *encap_dev = e->out_dev;
1935         if (e->flags & MLX5_ENCAP_ENTRY_VALID)
1936                 attr->encap_id = e->encap_id;
1937         else
1938                 err = -EAGAIN;
1939
1940         return err;
1941
1942 out_err:
1943         kfree(e);
1944         return err;
1945 }
1946
1947 static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1948                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
1949                                 struct mlx5e_tc_flow *flow)
1950 {
1951         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1952         struct mlx5e_rep_priv *rpriv = priv->ppriv;
1953         struct ip_tunnel_info *info = NULL;
1954         const struct tc_action *a;
1955         LIST_HEAD(actions);
1956         bool encap = false;
1957         int err = 0;
1958
1959         if (!tcf_exts_has_actions(exts))
1960                 return -EINVAL;
1961
1962         memset(attr, 0, sizeof(*attr));
1963         attr->in_rep = rpriv->rep;
1964
1965         tcf_exts_to_list(exts, &actions);
1966         list_for_each_entry(a, &actions, list) {
1967                 if (is_tcf_gact_shot(a)) {
1968                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
1969                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1970                         continue;
1971                 }
1972
1973                 if (is_tcf_pedit(a)) {
1974                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_FDB,
1975                                                     parse_attr);
1976                         if (err)
1977                                 return err;
1978
1979                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
1980                         continue;
1981                 }
1982
1983                 if (is_tcf_csum(a)) {
1984                         if (csum_offload_supported(priv, attr->action,
1985                                                    tcf_csum_update_flags(a)))
1986                                 continue;
1987
1988                         return -EOPNOTSUPP;
1989                 }
1990
1991                 if (is_tcf_mirred_egress_redirect(a)) {
1992                         struct net_device *out_dev;
1993                         struct mlx5e_priv *out_priv;
1994
1995                         out_dev = tcf_mirred_dev(a);
1996
1997                         if (switchdev_port_same_parent_id(priv->netdev,
1998                                                           out_dev)) {
1999                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2000                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
2001                                 out_priv = netdev_priv(out_dev);
2002                                 rpriv = out_priv->ppriv;
2003                                 attr->out_rep = rpriv->rep;
2004                         } else if (encap) {
2005                                 parse_attr->mirred_ifindex = out_dev->ifindex;
2006                                 parse_attr->tun_info = *info;
2007                                 attr->parse_attr = parse_attr;
2008                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
2009                                         MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2010                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
2011                                 /* attr->out_rep is resolved when we handle encap */
2012                         } else {
2013                                 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
2014                                        priv->netdev->name, out_dev->name);
2015                                 return -EINVAL;
2016                         }
2017                         continue;
2018                 }
2019
2020                 if (is_tcf_tunnel_set(a)) {
2021                         info = tcf_tunnel_info(a);
2022                         if (info)
2023                                 encap = true;
2024                         else
2025                                 return -EOPNOTSUPP;
2026                         continue;
2027                 }
2028
2029                 if (is_tcf_vlan(a)) {
2030                         if (tcf_vlan_action(a) == TCA_VLAN_ACT_POP) {
2031                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
2032                         } else if (tcf_vlan_action(a) == TCA_VLAN_ACT_PUSH) {
2033                                 if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
2034                                         return -EOPNOTSUPP;
2035
2036                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
2037                                 attr->vlan = tcf_vlan_push_vid(a);
2038                         } else { /* action is TCA_VLAN_ACT_MODIFY */
2039                                 return -EOPNOTSUPP;
2040                         }
2041                         continue;
2042                 }
2043
2044                 if (is_tcf_tunnel_release(a)) {
2045                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
2046                         continue;
2047                 }
2048
2049                 return -EINVAL;
2050         }
2051
2052         if (!actions_match_supported(priv, exts, parse_attr, flow))
2053                 return -EOPNOTSUPP;
2054
2055         return err;
2056 }
2057
2058 int mlx5e_configure_flower(struct mlx5e_priv *priv,
2059                            struct tc_cls_flower_offload *f)
2060 {
2061         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2062         struct mlx5e_tc_flow_parse_attr *parse_attr;
2063         struct mlx5e_tc_table *tc = &priv->fs.tc;
2064         struct mlx5e_tc_flow *flow;
2065         int attr_size, err = 0;
2066         u8 flow_flags = 0;
2067
2068         if (esw && esw->mode == SRIOV_OFFLOADS) {
2069                 flow_flags = MLX5E_TC_FLOW_ESWITCH;
2070                 attr_size  = sizeof(struct mlx5_esw_flow_attr);
2071         } else {
2072                 flow_flags = MLX5E_TC_FLOW_NIC;
2073                 attr_size  = sizeof(struct mlx5_nic_flow_attr);
2074         }
2075
2076         flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
2077         parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
2078         if (!parse_attr || !flow) {
2079                 err = -ENOMEM;
2080                 goto err_free;
2081         }
2082
2083         flow->cookie = f->cookie;
2084         flow->flags = flow_flags;
2085
2086         err = parse_cls_flower(priv, flow, &parse_attr->spec, f);
2087         if (err < 0)
2088                 goto err_free;
2089
2090         if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
2091                 err = parse_tc_fdb_actions(priv, f->exts, parse_attr, flow);
2092                 if (err < 0)
2093                         goto err_free;
2094                 flow->rule = mlx5e_tc_add_fdb_flow(priv, parse_attr, flow);
2095         } else {
2096                 err = parse_tc_nic_actions(priv, f->exts, parse_attr, flow);
2097                 if (err < 0)
2098                         goto err_free;
2099                 flow->rule = mlx5e_tc_add_nic_flow(priv, parse_attr, flow);
2100         }
2101
2102         if (IS_ERR(flow->rule)) {
2103                 err = PTR_ERR(flow->rule);
2104                 if (err != -EAGAIN)
2105                         goto err_free;
2106         }
2107
2108         if (err != -EAGAIN)
2109                 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
2110
2111         err = rhashtable_insert_fast(&tc->ht, &flow->node,
2112                                      tc->ht_params);
2113         if (err)
2114                 goto err_del_rule;
2115
2116         if (flow->flags & MLX5E_TC_FLOW_ESWITCH &&
2117             !(flow->esw_attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP))
2118                 kvfree(parse_attr);
2119         return err;
2120
2121 err_del_rule:
2122         mlx5e_tc_del_flow(priv, flow);
2123
2124 err_free:
2125         kvfree(parse_attr);
2126         kfree(flow);
2127         return err;
2128 }
2129
2130 int mlx5e_delete_flower(struct mlx5e_priv *priv,
2131                         struct tc_cls_flower_offload *f)
2132 {
2133         struct mlx5e_tc_flow *flow;
2134         struct mlx5e_tc_table *tc = &priv->fs.tc;
2135
2136         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
2137                                       tc->ht_params);
2138         if (!flow)
2139                 return -EINVAL;
2140
2141         rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
2142
2143         mlx5e_tc_del_flow(priv, flow);
2144
2145         kfree(flow);
2146
2147         return 0;
2148 }
2149
2150 int mlx5e_stats_flower(struct mlx5e_priv *priv,
2151                        struct tc_cls_flower_offload *f)
2152 {
2153         struct mlx5e_tc_table *tc = &priv->fs.tc;
2154         struct mlx5e_tc_flow *flow;
2155         struct mlx5_fc *counter;
2156         u64 bytes;
2157         u64 packets;
2158         u64 lastuse;
2159
2160         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
2161                                       tc->ht_params);
2162         if (!flow)
2163                 return -EINVAL;
2164
2165         if (!(flow->flags & MLX5E_TC_FLOW_OFFLOADED))
2166                 return 0;
2167
2168         counter = mlx5_flow_rule_counter(flow->rule);
2169         if (!counter)
2170                 return 0;
2171
2172         mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
2173
2174         tcf_exts_stats_update(f->exts, bytes, packets, lastuse);
2175
2176         return 0;
2177 }
2178
2179 static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
2180         .head_offset = offsetof(struct mlx5e_tc_flow, node),
2181         .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
2182         .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
2183         .automatic_shrinking = true,
2184 };
2185
2186 int mlx5e_tc_init(struct mlx5e_priv *priv)
2187 {
2188         struct mlx5e_tc_table *tc = &priv->fs.tc;
2189
2190         hash_init(tc->mod_hdr_tbl);
2191
2192         tc->ht_params = mlx5e_tc_flow_ht_params;
2193         return rhashtable_init(&tc->ht, &tc->ht_params);
2194 }
2195
2196 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
2197 {
2198         struct mlx5e_tc_flow *flow = ptr;
2199         struct mlx5e_priv *priv = arg;
2200
2201         mlx5e_tc_del_flow(priv, flow);
2202         kfree(flow);
2203 }
2204
2205 void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
2206 {
2207         struct mlx5e_tc_table *tc = &priv->fs.tc;
2208
2209         rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
2210
2211         if (!IS_ERR_OR_NULL(tc->t)) {
2212                 mlx5_destroy_flow_table(tc->t);
2213                 tc->t = NULL;
2214         }
2215 }