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 "lib/vxlan.h"
  54 #include "fs_core.h"
  55 #include "en/port.h"
  56
  57 struct mlx5_nic_flow_attr {
  58         u32 action;
  59         u32 flow_tag;
  60         u32 mod_hdr_id;
  61         u32 hairpin_tirn;
  62         u8 match_level;
  63         struct mlx5_flow_table  *hairpin_ft;
  64         struct mlx5_fc          *counter;
  65 };
  66
  67 #define MLX5E_TC_FLOW_BASE (MLX5E_TC_LAST_EXPORTED_BIT + 1)
  68
  69 enum {
  70         MLX5E_TC_FLOW_INGRESS   = MLX5E_TC_INGRESS,
  71         MLX5E_TC_FLOW_EGRESS    = MLX5E_TC_EGRESS,
  72         MLX5E_TC_FLOW_ESWITCH   = BIT(MLX5E_TC_FLOW_BASE),
  73         MLX5E_TC_FLOW_NIC       = BIT(MLX5E_TC_FLOW_BASE + 1),
  74         MLX5E_TC_FLOW_OFFLOADED = BIT(MLX5E_TC_FLOW_BASE + 2),
  75         MLX5E_TC_FLOW_HAIRPIN   = BIT(MLX5E_TC_FLOW_BASE + 3),
  76         MLX5E_TC_FLOW_HAIRPIN_RSS = BIT(MLX5E_TC_FLOW_BASE + 4),
  77 };
  78
  79 #define MLX5E_TC_MAX_SPLITS 1
  80
  81 struct mlx5e_tc_flow {
  82         struct rhash_head       node;
  83         struct mlx5e_priv       *priv;
  84         u64                     cookie;
  85         u8                      flags;
  86         struct mlx5_flow_handle *rule[MLX5E_TC_MAX_SPLITS + 1];
  87         struct list_head        encap;   /* flows sharing the same encap ID */
  88         struct list_head        mod_hdr; /* flows sharing the same mod hdr ID */
  89         struct list_head        hairpin; /* flows sharing the same hairpin */
  90         union {
  91                 struct mlx5_esw_flow_attr esw_attr[0];
  92                 struct mlx5_nic_flow_attr nic_attr[0];
  93         };
  94 };
  95
  96 struct mlx5e_tc_flow_parse_attr {
  97         struct ip_tunnel_info tun_info;
  98         struct mlx5_flow_spec spec;
  99         int num_mod_hdr_actions;
 100         void *mod_hdr_actions;
 101         int mirred_ifindex;
 102 };
 103
 104 #define MLX5E_TC_TABLE_NUM_GROUPS 4
 105 #define MLX5E_TC_TABLE_MAX_GROUP_SIZE BIT(16)
 106
 107 struct mlx5e_hairpin {
 108         struct mlx5_hairpin *pair;
 109
 110         struct mlx5_core_dev *func_mdev;
 111         struct mlx5e_priv *func_priv;
 112         u32 tdn;
 113         u32 tirn;
 114
 115         int num_channels;
 116         struct mlx5e_rqt indir_rqt;
 117         u32 indir_tirn[MLX5E_NUM_INDIR_TIRS];
 118         struct mlx5e_ttc_table ttc;
 119 };
 120
 121 struct mlx5e_hairpin_entry {
 122         /* a node of a hash table which keeps all the  hairpin entries */
 123         struct hlist_node hairpin_hlist;
 124
 125         /* flows sharing the same hairpin */
 126         struct list_head flows;
 127
 128         u16 peer_vhca_id;
 129         u8 prio;
 130         struct mlx5e_hairpin *hp;
 131 };
 132
 133 struct mod_hdr_key {
 134         int num_actions;
 135         void *actions;
 136 };
 137
 138 struct mlx5e_mod_hdr_entry {
 139         /* a node of a hash table which keeps all the mod_hdr entries */
 140         struct hlist_node mod_hdr_hlist;
 141
 142         /* flows sharing the same mod_hdr entry */
 143         struct list_head flows;
 144
 145         struct mod_hdr_key key;
 146
 147         u32 mod_hdr_id;
 148 };
 149
 150 #define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto)
 151
 152 static inline u32 hash_mod_hdr_info(struct mod_hdr_key *key)
 153 {
 154         return jhash(key->actions,
 155                      key->num_actions * MLX5_MH_ACT_SZ, 0);
 156 }
 157
 158 static inline int cmp_mod_hdr_info(struct mod_hdr_key *a,
 159                                    struct mod_hdr_key *b)
 160 {
 161         if (a->num_actions != b->num_actions)
 162                 return 1;
 163
 164         return memcmp(a->actions, b->actions, a->num_actions * MLX5_MH_ACT_SZ);
 165 }
 166
 167 static int mlx5e_attach_mod_hdr(struct mlx5e_priv *priv,
 168                                 struct mlx5e_tc_flow *flow,
 169                                 struct mlx5e_tc_flow_parse_attr *parse_attr)
 170 {
 171         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 172         int num_actions, actions_size, namespace, err;
 173         struct mlx5e_mod_hdr_entry *mh;
 174         struct mod_hdr_key key;
 175         bool found = false;
 176         u32 hash_key;
 177
 178         num_actions  = parse_attr->num_mod_hdr_actions;
 179         actions_size = MLX5_MH_ACT_SZ * num_actions;
 180
 181         key.actions = parse_attr->mod_hdr_actions;
 182         key.num_actions = num_actions;
 183
 184         hash_key = hash_mod_hdr_info(&key);
 185
 186         if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
 187                 namespace = MLX5_FLOW_NAMESPACE_FDB;
 188                 hash_for_each_possible(esw->offloads.mod_hdr_tbl, mh,
 189                                        mod_hdr_hlist, hash_key) {
 190                         if (!cmp_mod_hdr_info(&mh->key, &key)) {
 191                                 found = true;
 192                                 break;
 193                         }
 194                 }
 195         } else {
 196                 namespace = MLX5_FLOW_NAMESPACE_KERNEL;
 197                 hash_for_each_possible(priv->fs.tc.mod_hdr_tbl, mh,
 198                                        mod_hdr_hlist, hash_key) {
 199                         if (!cmp_mod_hdr_info(&mh->key, &key)) {
 200                                 found = true;
 201                                 break;
 202                         }
 203                 }
 204         }
 205
 206         if (found)
 207                 goto attach_flow;
 208
 209         mh = kzalloc(sizeof(*mh) + actions_size, GFP_KERNEL);
 210         if (!mh)
 211                 return -ENOMEM;
 212
 213         mh->key.actions = (void *)mh + sizeof(*mh);
 214         memcpy(mh->key.actions, key.actions, actions_size);
 215         mh->key.num_actions = num_actions;
 216         INIT_LIST_HEAD(&mh->flows);
 217
 218         err = mlx5_modify_header_alloc(priv->mdev, namespace,
 219                                        mh->key.num_actions,
 220                                        mh->key.actions,
 221                                        &mh->mod_hdr_id);
 222         if (err)
 223                 goto out_err;
 224
 225         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
 226                 hash_add(esw->offloads.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key);
 227         else
 228                 hash_add(priv->fs.tc.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key);
 229
 230 attach_flow:
 231         list_add(&flow->mod_hdr, &mh->flows);
 232         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
 233                 flow->esw_attr->mod_hdr_id = mh->mod_hdr_id;
 234         else
 235                 flow->nic_attr->mod_hdr_id = mh->mod_hdr_id;
 236
 237         return 0;
 238
 239 out_err:
 240         kfree(mh);
 241         return err;
 242 }
 243
 244 static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv,
 245                                  struct mlx5e_tc_flow *flow)
 246 {
 247         struct list_head *next = flow->mod_hdr.next;
 248
 249         list_del(&flow->mod_hdr);
 250
 251         if (list_empty(next)) {
 252                 struct mlx5e_mod_hdr_entry *mh;
 253
 254                 mh = list_entry(next, struct mlx5e_mod_hdr_entry, flows);
 255
 256                 mlx5_modify_header_dealloc(priv->mdev, mh->mod_hdr_id);
 257                 hash_del(&mh->mod_hdr_hlist);
 258                 kfree(mh);
 259         }
 260 }
 261
 262 static
 263 struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex)
 264 {
 265         struct net_device *netdev;
 266         struct mlx5e_priv *priv;
 267
 268         netdev = __dev_get_by_index(net, ifindex);
 269         priv = netdev_priv(netdev);
 270         return priv->mdev;
 271 }
 272
 273 static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp)
 274 {
 275         u32 in[MLX5_ST_SZ_DW(create_tir_in)] = {0};
 276         void *tirc;
 277         int err;
 278
 279         err = mlx5_core_alloc_transport_domain(hp->func_mdev, &hp->tdn);
 280         if (err)
 281                 goto alloc_tdn_err;
 282
 283         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
 284
 285         MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
 286         MLX5_SET(tirc, tirc, inline_rqn, hp->pair->rqn[0]);
 287         MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
 288
 289         err = mlx5_core_create_tir(hp->func_mdev, in, MLX5_ST_SZ_BYTES(create_tir_in), &hp->tirn);
 290         if (err)
 291                 goto create_tir_err;
 292
 293         return 0;
 294
 295 create_tir_err:
 296         mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
 297 alloc_tdn_err:
 298         return err;
 299 }
 300
 301 static void mlx5e_hairpin_destroy_transport(struct mlx5e_hairpin *hp)
 302 {
 303         mlx5_core_destroy_tir(hp->func_mdev, hp->tirn);
 304         mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
 305 }
 306
 307 static void mlx5e_hairpin_fill_rqt_rqns(struct mlx5e_hairpin *hp, void *rqtc)
 308 {
 309         u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE], rqn;
 310         struct mlx5e_priv *priv = hp->func_priv;
 311         int i, ix, sz = MLX5E_INDIR_RQT_SIZE;
 312
 313         mlx5e_build_default_indir_rqt(indirection_rqt, sz,
 314                                       hp->num_channels);
 315
 316         for (i = 0; i < sz; i++) {
 317                 ix = i;
 318                 if (priv->channels.params.rss_hfunc == ETH_RSS_HASH_XOR)
 319                         ix = mlx5e_bits_invert(i, ilog2(sz));
 320                 ix = indirection_rqt[ix];
 321                 rqn = hp->pair->rqn[ix];
 322                 MLX5_SET(rqtc, rqtc, rq_num[i], rqn);
 323         }
 324 }
 325
 326 static int mlx5e_hairpin_create_indirect_rqt(struct mlx5e_hairpin *hp)
 327 {
 328         int inlen, err, sz = MLX5E_INDIR_RQT_SIZE;
 329         struct mlx5e_priv *priv = hp->func_priv;
 330         struct mlx5_core_dev *mdev = priv->mdev;
 331         void *rqtc;
 332         u32 *in;
 333
 334         inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
 335         in = kvzalloc(inlen, GFP_KERNEL);
 336         if (!in)
 337                 return -ENOMEM;
 338
 339         rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
 340
 341         MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
 342         MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
 343
 344         mlx5e_hairpin_fill_rqt_rqns(hp, rqtc);
 345
 346         err = mlx5_core_create_rqt(mdev, in, inlen, &hp->indir_rqt.rqtn);
 347         if (!err)
 348                 hp->indir_rqt.enabled = true;
 349
 350         kvfree(in);
 351         return err;
 352 }
 353
 354 static int mlx5e_hairpin_create_indirect_tirs(struct mlx5e_hairpin *hp)
 355 {
 356         struct mlx5e_priv *priv = hp->func_priv;
 357         u32 in[MLX5_ST_SZ_DW(create_tir_in)];
 358         int tt, i, err;
 359         void *tirc;
 360
 361         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
 362                 memset(in, 0, MLX5_ST_SZ_BYTES(create_tir_in));
 363                 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
 364
 365                 MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
 366                 MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_INDIRECT);
 367                 MLX5_SET(tirc, tirc, indirect_table, hp->indir_rqt.rqtn);
 368                 mlx5e_build_indir_tir_ctx_hash(&priv->channels.params, tt, tirc, false);
 369
 370                 err = mlx5_core_create_tir(hp->func_mdev, in,
 371                                            MLX5_ST_SZ_BYTES(create_tir_in), &hp->indir_tirn[tt]);
 372                 if (err) {
 373                         mlx5_core_warn(hp->func_mdev, "create indirect tirs failed, %d\n", err);
 374                         goto err_destroy_tirs;
 375                 }
 376         }
 377         return 0;
 378
 379 err_destroy_tirs:
 380         for (i = 0; i < tt; i++)
 381                 mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[i]);
 382         return err;
 383 }
 384
 385 static void mlx5e_hairpin_destroy_indirect_tirs(struct mlx5e_hairpin *hp)
 386 {
 387         int tt;
 388
 389         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
 390                 mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[tt]);
 391 }
 392
 393 static void mlx5e_hairpin_set_ttc_params(struct mlx5e_hairpin *hp,
 394                                          struct ttc_params *ttc_params)
 395 {
 396         struct mlx5_flow_table_attr *ft_attr = &ttc_params->ft_attr;
 397         int tt;
 398
 399         memset(ttc_params, 0, sizeof(*ttc_params));
 400
 401         ttc_params->any_tt_tirn = hp->tirn;
 402
 403         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
 404                 ttc_params->indir_tirn[tt] = hp->indir_tirn[tt];
 405
 406         ft_attr->max_fte = MLX5E_NUM_TT;
 407         ft_attr->level = MLX5E_TC_TTC_FT_LEVEL;
 408         ft_attr->prio = MLX5E_TC_PRIO;
 409 }
 410
 411 static int mlx5e_hairpin_rss_init(struct mlx5e_hairpin *hp)
 412 {
 413         struct mlx5e_priv *priv = hp->func_priv;
 414         struct ttc_params ttc_params;
 415         int err;
 416
 417         err = mlx5e_hairpin_create_indirect_rqt(hp);
 418         if (err)
 419                 return err;
 420
 421         err = mlx5e_hairpin_create_indirect_tirs(hp);
 422         if (err)
 423                 goto err_create_indirect_tirs;
 424
 425         mlx5e_hairpin_set_ttc_params(hp, &ttc_params);
 426         err = mlx5e_create_ttc_table(priv, &ttc_params, &hp->ttc);
 427         if (err)
 428                 goto err_create_ttc_table;
 429
 430         netdev_dbg(priv->netdev, "add hairpin: using %d channels rss ttc table id %x\n",
 431                    hp->num_channels, hp->ttc.ft.t->id);
 432
 433         return 0;
 434
 435 err_create_ttc_table:
 436         mlx5e_hairpin_destroy_indirect_tirs(hp);
 437 err_create_indirect_tirs:
 438         mlx5e_destroy_rqt(priv, &hp->indir_rqt);
 439
 440         return err;
 441 }
 442
 443 static void mlx5e_hairpin_rss_cleanup(struct mlx5e_hairpin *hp)
 444 {
 445         struct mlx5e_priv *priv = hp->func_priv;
 446
 447         mlx5e_destroy_ttc_table(priv, &hp->ttc);
 448         mlx5e_hairpin_destroy_indirect_tirs(hp);
 449         mlx5e_destroy_rqt(priv, &hp->indir_rqt);
 450 }
 451
 452 static struct mlx5e_hairpin *
 453 mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params,
 454                      int peer_ifindex)
 455 {
 456         struct mlx5_core_dev *func_mdev, *peer_mdev;
 457         struct mlx5e_hairpin *hp;
 458         struct mlx5_hairpin *pair;
 459         int err;
 460
 461         hp = kzalloc(sizeof(*hp), GFP_KERNEL);
 462         if (!hp)
 463                 return ERR_PTR(-ENOMEM);
 464
 465         func_mdev = priv->mdev;
 466         peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
 467
 468         pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params);
 469         if (IS_ERR(pair)) {
 470                 err = PTR_ERR(pair);
 471                 goto create_pair_err;
 472         }
 473         hp->pair = pair;
 474         hp->func_mdev = func_mdev;
 475         hp->func_priv = priv;
 476         hp->num_channels = params->num_channels;
 477
 478         err = mlx5e_hairpin_create_transport(hp);
 479         if (err)
 480                 goto create_transport_err;
 481
 482         if (hp->num_channels > 1) {
 483                 err = mlx5e_hairpin_rss_init(hp);
 484                 if (err)
 485                         goto rss_init_err;
 486         }
 487
 488         return hp;
 489
 490 rss_init_err:
 491         mlx5e_hairpin_destroy_transport(hp);
 492 create_transport_err:
 493         mlx5_core_hairpin_destroy(hp->pair);
 494 create_pair_err:
 495         kfree(hp);
 496         return ERR_PTR(err);
 497 }
 498
 499 static void mlx5e_hairpin_destroy(struct mlx5e_hairpin *hp)
 500 {
 501         if (hp->num_channels > 1)
 502                 mlx5e_hairpin_rss_cleanup(hp);
 503         mlx5e_hairpin_destroy_transport(hp);
 504         mlx5_core_hairpin_destroy(hp->pair);
 505         kvfree(hp);
 506 }
 507
 508 static inline u32 hash_hairpin_info(u16 peer_vhca_id, u8 prio)
 509 {
 510         return (peer_vhca_id << 16 | prio);
 511 }
 512
 513 static struct mlx5e_hairpin_entry *mlx5e_hairpin_get(struct mlx5e_priv *priv,
 514                                                      u16 peer_vhca_id, u8 prio)
 515 {
 516         struct mlx5e_hairpin_entry *hpe;
 517         u32 hash_key = hash_hairpin_info(peer_vhca_id, prio);
 518
 519         hash_for_each_possible(priv->fs.tc.hairpin_tbl, hpe,
 520                                hairpin_hlist, hash_key) {
 521                 if (hpe->peer_vhca_id == peer_vhca_id && hpe->prio == prio)
 522                         return hpe;
 523         }
 524
 525         return NULL;
 526 }
 527
 528 #define UNKNOWN_MATCH_PRIO 8
 529
 530 static int mlx5e_hairpin_get_prio(struct mlx5e_priv *priv,
 531                                   struct mlx5_flow_spec *spec, u8 *match_prio,
 532                                   struct netlink_ext_ack *extack)
 533 {
 534         void *headers_c, *headers_v;
 535         u8 prio_val, prio_mask = 0;
 536         bool vlan_present;
 537
 538 #ifdef CONFIG_MLX5_CORE_EN_DCB
 539         if (priv->dcbx_dp.trust_state != MLX5_QPTS_TRUST_PCP) {
 540                 NL_SET_ERR_MSG_MOD(extack,
 541                                    "only PCP trust state supported for hairpin");
 542                 return -EOPNOTSUPP;
 543         }
 544 #endif
 545         headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers);
 546         headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
 547
 548         vlan_present = MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag);
 549         if (vlan_present) {
 550                 prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
 551                 prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
 552         }
 553
 554         if (!vlan_present || !prio_mask) {
 555                 prio_val = UNKNOWN_MATCH_PRIO;
 556         } else if (prio_mask != 0x7) {
 557                 NL_SET_ERR_MSG_MOD(extack,
 558                                    "masked priority match not supported for hairpin");
 559                 return -EOPNOTSUPP;
 560         }
 561
 562         *match_prio = prio_val;
 563         return 0;
 564 }
 565
 566 static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv,
 567                                   struct mlx5e_tc_flow *flow,
 568                                   struct mlx5e_tc_flow_parse_attr *parse_attr,
 569                                   struct netlink_ext_ack *extack)
 570 {
 571         int peer_ifindex = parse_attr->mirred_ifindex;
 572         struct mlx5_hairpin_params params;
 573         struct mlx5_core_dev *peer_mdev;
 574         struct mlx5e_hairpin_entry *hpe;
 575         struct mlx5e_hairpin *hp;
 576         u64 link_speed64;
 577         u32 link_speed;
 578         u8 match_prio;
 579         u16 peer_id;
 580         int err;
 581
 582         peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
 583         if (!MLX5_CAP_GEN(priv->mdev, hairpin) || !MLX5_CAP_GEN(peer_mdev, hairpin)) {
 584                 NL_SET_ERR_MSG_MOD(extack, "hairpin is not supported");
 585                 return -EOPNOTSUPP;
 586         }
 587
 588         peer_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
 589         err = mlx5e_hairpin_get_prio(priv, &parse_attr->spec, &match_prio,
 590                                      extack);
 591         if (err)
 592                 return err;
 593         hpe = mlx5e_hairpin_get(priv, peer_id, match_prio);
 594         if (hpe)
 595                 goto attach_flow;
 596
 597         hpe = kzalloc(sizeof(*hpe), GFP_KERNEL);
 598         if (!hpe)
 599                 return -ENOMEM;
 600
 601         INIT_LIST_HEAD(&hpe->flows);
 602         hpe->peer_vhca_id = peer_id;
 603         hpe->prio = match_prio;
 604
 605         params.log_data_size = 15;
 606         params.log_data_size = min_t(u8, params.log_data_size,
 607                                      MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz));
 608         params.log_data_size = max_t(u8, params.log_data_size,
 609                                      MLX5_CAP_GEN(priv->mdev, log_min_hairpin_wq_data_sz));
 610
 611         params.log_num_packets = params.log_data_size -
 612                                  MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(priv->mdev);
 613         params.log_num_packets = min_t(u8, params.log_num_packets,
 614                                        MLX5_CAP_GEN(priv->mdev, log_max_hairpin_num_packets));
 615
 616         params.q_counter = priv->q_counter;
 617         /* set hairpin pair per each 50Gbs share of the link */
 618         mlx5e_port_max_linkspeed(priv->mdev, &link_speed);
 619         link_speed = max_t(u32, link_speed, 50000);
 620         link_speed64 = link_speed;
 621         do_div(link_speed64, 50000);
 622         params.num_channels = link_speed64;
 623
 624         hp = mlx5e_hairpin_create(priv, &params, peer_ifindex);
 625         if (IS_ERR(hp)) {
 626                 err = PTR_ERR(hp);
 627                 goto create_hairpin_err;
 628         }
 629
 630         netdev_dbg(priv->netdev, "add hairpin: tirn %x rqn %x peer %s sqn %x prio %d (log) data %d packets %d\n",
 631                    hp->tirn, hp->pair->rqn[0], hp->pair->peer_mdev->priv.name,
 632                    hp->pair->sqn[0], match_prio, params.log_data_size, params.log_num_packets);
 633
 634         hpe->hp = hp;
 635         hash_add(priv->fs.tc.hairpin_tbl, &hpe->hairpin_hlist,
 636                  hash_hairpin_info(peer_id, match_prio));
 637
 638 attach_flow:
 639         if (hpe->hp->num_channels > 1) {
 640                 flow->flags |= MLX5E_TC_FLOW_HAIRPIN_RSS;
 641                 flow->nic_attr->hairpin_ft = hpe->hp->ttc.ft.t;
 642         } else {
 643                 flow->nic_attr->hairpin_tirn = hpe->hp->tirn;
 644         }
 645         list_add(&flow->hairpin, &hpe->flows);
 646
 647         return 0;
 648
 649 create_hairpin_err:
 650         kfree(hpe);
 651         return err;
 652 }
 653
 654 static void mlx5e_hairpin_flow_del(struct mlx5e_priv *priv,
 655                                    struct mlx5e_tc_flow *flow)
 656 {
 657         struct list_head *next = flow->hairpin.next;
 658
 659         list_del(&flow->hairpin);
 660
 661         /* no more hairpin flows for us, release the hairpin pair */
 662         if (list_empty(next)) {
 663                 struct mlx5e_hairpin_entry *hpe;
 664
 665                 hpe = list_entry(next, struct mlx5e_hairpin_entry, flows);
 666
 667                 netdev_dbg(priv->netdev, "del hairpin: peer %s\n",
 668                            hpe->hp->pair->peer_mdev->priv.name);
 669
 670                 mlx5e_hairpin_destroy(hpe->hp);
 671                 hash_del(&hpe->hairpin_hlist);
 672                 kfree(hpe);
 673         }
 674 }
 675
 676 static int
 677 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
 678                       struct mlx5e_tc_flow_parse_attr *parse_attr,
 679                       struct mlx5e_tc_flow *flow,
 680                       struct netlink_ext_ack *extack)
 681 {
 682         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
 683         struct mlx5_core_dev *dev = priv->mdev;
 684         struct mlx5_flow_destination dest[2] = {};
 685         struct mlx5_flow_act flow_act = {
 686                 .action = attr->action,
 687                 .has_flow_tag = true,
 688                 .flow_tag = attr->flow_tag,
 689                 .reformat_id = 0,
 690         };
 691         struct mlx5_fc *counter = NULL;
 692         bool table_created = false;
 693         int err, dest_ix = 0;
 694
 695         if (flow->flags & MLX5E_TC_FLOW_HAIRPIN) {
 696                 err = mlx5e_hairpin_flow_add(priv, flow, parse_attr, extack);
 697                 if (err) {
 698                         goto err_add_hairpin_flow;
 699                 }
 700                 if (flow->flags & MLX5E_TC_FLOW_HAIRPIN_RSS) {
 701                         dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
 702                         dest[dest_ix].ft = attr->hairpin_ft;
 703                 } else {
 704                         dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_TIR;
 705                         dest[dest_ix].tir_num = attr->hairpin_tirn;
 706                 }
 707                 dest_ix++;
 708         } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
 709                 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
 710                 dest[dest_ix].ft = priv->fs.vlan.ft.t;
 711                 dest_ix++;
 712         }
 713
 714         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
 715                 counter = mlx5_fc_create(dev, true);
 716                 if (IS_ERR(counter)) {
 717                         err = PTR_ERR(counter);
 718                         goto err_fc_create;
 719                 }
 720                 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
 721                 dest[dest_ix].counter_id = mlx5_fc_id(counter);
 722                 dest_ix++;
 723                 attr->counter = counter;
 724         }
 725
 726         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
 727                 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
 728                 flow_act.modify_id = attr->mod_hdr_id;
 729                 kfree(parse_attr->mod_hdr_actions);
 730                 if (err)
 731                         goto err_create_mod_hdr_id;
 732         }
 733
 734         if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
 735                 int tc_grp_size, tc_tbl_size;
 736                 u32 max_flow_counter;
 737
 738                 max_flow_counter = (MLX5_CAP_GEN(dev, max_flow_counter_31_16) << 16) |
 739                                     MLX5_CAP_GEN(dev, max_flow_counter_15_0);
 740
 741                 tc_grp_size = min_t(int, max_flow_counter, MLX5E_TC_TABLE_MAX_GROUP_SIZE);
 742
 743                 tc_tbl_size = min_t(int, tc_grp_size * MLX5E_TC_TABLE_NUM_GROUPS,
 744                                     BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev, log_max_ft_size)));
 745
 746                 priv->fs.tc.t =
 747                         mlx5_create_auto_grouped_flow_table(priv->fs.ns,
 748                                                             MLX5E_TC_PRIO,
 749                                                             tc_tbl_size,
 750                                                             MLX5E_TC_TABLE_NUM_GROUPS,
 751                                                             MLX5E_TC_FT_LEVEL, 0);
 752                 if (IS_ERR(priv->fs.tc.t)) {
 753                         NL_SET_ERR_MSG_MOD(extack,
 754                                            "Failed to create tc offload table\n");
 755                         netdev_err(priv->netdev,
 756                                    "Failed to create tc offload table\n");
 757                         err = PTR_ERR(priv->fs.tc.t);
 758                         goto err_create_ft;
 759                 }
 760
 761                 table_created = true;
 762         }
 763
 764         if (attr->match_level != MLX5_MATCH_NONE)
 765                 parse_attr->spec.match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
 766
 767         flow->rule[0] = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec,
 768                                             &flow_act, dest, dest_ix);
 769
 770         if (IS_ERR(flow->rule[0])) {
 771                 err = PTR_ERR(flow->rule[0]);
 772                 goto err_add_rule;
 773         }
 774
 775         return 0;
 776
 777 err_add_rule:
 778         if (table_created) {
 779                 mlx5_destroy_flow_table(priv->fs.tc.t);
 780                 priv->fs.tc.t = NULL;
 781         }
 782 err_create_ft:
 783         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 784                 mlx5e_detach_mod_hdr(priv, flow);
 785 err_create_mod_hdr_id:
 786         mlx5_fc_destroy(dev, counter);
 787 err_fc_create:
 788         if (flow->flags & MLX5E_TC_FLOW_HAIRPIN)
 789                 mlx5e_hairpin_flow_del(priv, flow);
 790 err_add_hairpin_flow:
 791         return err;
 792 }
 793
 794 static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
 795                                   struct mlx5e_tc_flow *flow)
 796 {
 797         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
 798         struct mlx5_fc *counter = NULL;
 799
 800         counter = attr->counter;
 801         mlx5_del_flow_rules(flow->rule[0]);
 802         mlx5_fc_destroy(priv->mdev, counter);
 803
 804         if (!mlx5e_tc_num_filters(priv) && priv->fs.tc.t) {
 805                 mlx5_destroy_flow_table(priv->fs.tc.t);
 806                 priv->fs.tc.t = NULL;
 807         }
 808
 809         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 810                 mlx5e_detach_mod_hdr(priv, flow);
 811
 812         if (flow->flags & MLX5E_TC_FLOW_HAIRPIN)
 813                 mlx5e_hairpin_flow_del(priv, flow);
 814 }
 815
 816 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
 817                                struct mlx5e_tc_flow *flow);
 818
 819 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
 820                               struct ip_tunnel_info *tun_info,
 821                               struct net_device *mirred_dev,
 822                               struct net_device **encap_dev,
 823                               struct mlx5e_tc_flow *flow,
 824                               struct netlink_ext_ack *extack);
 825
 826 static int
 827 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
 828                       struct mlx5e_tc_flow_parse_attr *parse_attr,
 829                       struct mlx5e_tc_flow *flow,
 830                       struct netlink_ext_ack *extack)
 831 {
 832         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 833         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
 834         struct net_device *out_dev, *encap_dev = NULL;
 835         struct mlx5_fc *counter = NULL;
 836         struct mlx5e_rep_priv *rpriv;
 837         struct mlx5e_priv *out_priv;
 838         int err = 0, encap_err = 0;
 839
 840         /* keep the old behaviour, use same prio for all offloaded rules */
 841         attr->prio = 1;
 842
 843         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT) {
 844                 out_dev = __dev_get_by_index(dev_net(priv->netdev),
 845                                              attr->parse_attr->mirred_ifindex);
 846                 encap_err = mlx5e_attach_encap(priv, &parse_attr->tun_info,
 847                                                out_dev, &encap_dev, flow,
 848                                                extack);
 849                 if (encap_err && encap_err != -EAGAIN) {
 850                         err = encap_err;
 851                         goto err_attach_encap;
 852                 }
 853                 out_priv = netdev_priv(encap_dev);
 854                 rpriv = out_priv->ppriv;
 855                 attr->out_rep[attr->out_count] = rpriv->rep;
 856                 attr->out_mdev[attr->out_count++] = out_priv->mdev;
 857         }
 858
 859         err = mlx5_eswitch_add_vlan_action(esw, attr);
 860         if (err)
 861                 goto err_add_vlan;
 862
 863         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
 864                 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
 865                 kfree(parse_attr->mod_hdr_actions);
 866                 if (err)
 867                         goto err_mod_hdr;
 868         }
 869
 870         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
 871                 counter = mlx5_fc_create(esw->dev, true);
 872                 if (IS_ERR(counter)) {
 873                         err = PTR_ERR(counter);
 874                         goto err_create_counter;
 875                 }
 876
 877                 attr->counter = counter;
 878         }
 879
 880         /* we get here if (1) there's no error or when
 881          * (2) there's an encap action and we're on -EAGAIN (no valid neigh)
 882          */
 883         if (encap_err != -EAGAIN) {
 884                 flow->rule[0] = mlx5_eswitch_add_offloaded_rule(esw, &parse_attr->spec, attr);
 885                 if (IS_ERR(flow->rule[0])) {
 886                         err = PTR_ERR(flow->rule[0]);
 887                         goto err_add_rule;
 888                 }
 889
 890                 if (attr->mirror_count) {
 891                         flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, &parse_attr->spec, attr);
 892                         if (IS_ERR(flow->rule[1])) {
 893                                 err = PTR_ERR(flow->rule[1]);
 894                                 goto err_fwd_rule;
 895                         }
 896                 }
 897         }
 898
 899         return encap_err;
 900
 901 err_fwd_rule:
 902         mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
 903 err_add_rule:
 904         mlx5_fc_destroy(esw->dev, counter);
 905 err_create_counter:
 906         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 907                 mlx5e_detach_mod_hdr(priv, flow);
 908 err_mod_hdr:
 909         mlx5_eswitch_del_vlan_action(esw, attr);
 910 err_add_vlan:
 911         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT)
 912                 mlx5e_detach_encap(priv, flow);
 913 err_attach_encap:
 914         return err;
 915 }
 916
 917 static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
 918                                   struct mlx5e_tc_flow *flow)
 919 {
 920         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 921         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
 922
 923         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
 924                 flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
 925                 if (attr->mirror_count)
 926                         mlx5_eswitch_del_fwd_rule(esw, flow->rule[1], attr);
 927                 mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
 928         }
 929
 930         mlx5_eswitch_del_vlan_action(esw, attr);
 931
 932         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT) {
 933                 mlx5e_detach_encap(priv, flow);
 934                 kvfree(attr->parse_attr);
 935         }
 936
 937         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 938                 mlx5e_detach_mod_hdr(priv, flow);
 939
 940         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
 941                 mlx5_fc_destroy(esw->dev, attr->counter);
 942 }
 943
 944 void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
 945                               struct mlx5e_encap_entry *e)
 946 {
 947         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 948         struct mlx5_esw_flow_attr *esw_attr;
 949         struct mlx5e_tc_flow *flow;
 950         int err;
 951
 952         err = mlx5_packet_reformat_alloc(priv->mdev, e->tunnel_type,
 953                                          e->encap_size, e->encap_header,
 954                                          MLX5_FLOW_NAMESPACE_FDB,
 955                                          &e->encap_id);
 956         if (err) {
 957                 mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %d\n",
 958                                err);
 959                 return;
 960         }
 961         e->flags |= MLX5_ENCAP_ENTRY_VALID;
 962         mlx5e_rep_queue_neigh_stats_work(priv);
 963
 964         list_for_each_entry(flow, &e->flows, encap) {
 965                 esw_attr = flow->esw_attr;
 966                 esw_attr->encap_id = e->encap_id;
 967                 flow->rule[0] = mlx5_eswitch_add_offloaded_rule(esw, &esw_attr->parse_attr->spec, esw_attr);
 968                 if (IS_ERR(flow->rule[0])) {
 969                         err = PTR_ERR(flow->rule[0]);
 970                         mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n",
 971                                        err);
 972                         continue;
 973                 }
 974
 975                 if (esw_attr->mirror_count) {
 976                         flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, &esw_attr->parse_attr->spec, esw_attr);
 977                         if (IS_ERR(flow->rule[1])) {
 978                                 mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], esw_attr);
 979                                 err = PTR_ERR(flow->rule[1]);
 980                                 mlx5_core_warn(priv->mdev, "Failed to update cached mirror flow, %d\n",
 981                                                err);
 982                                 continue;
 983                         }
 984                 }
 985
 986                 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
 987         }
 988 }
 989
 990 void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
 991                               struct mlx5e_encap_entry *e)
 992 {
 993         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 994         struct mlx5e_tc_flow *flow;
 995
 996         list_for_each_entry(flow, &e->flows, encap) {
 997                 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
 998                         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
 999
1000                         flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
1001                         if (attr->mirror_count)
1002                                 mlx5_eswitch_del_fwd_rule(esw, flow->rule[1], attr);
1003                         mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
1004                 }
1005         }
1006
1007         if (e->flags & MLX5_ENCAP_ENTRY_VALID) {
1008                 e->flags &= ~MLX5_ENCAP_ENTRY_VALID;
1009                 mlx5_packet_reformat_dealloc(priv->mdev, e->encap_id);
1010         }
1011 }
1012
1013 static struct mlx5_fc *mlx5e_tc_get_counter(struct mlx5e_tc_flow *flow)
1014 {
1015         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
1016                 return flow->esw_attr->counter;
1017         else
1018                 return flow->nic_attr->counter;
1019 }
1020
1021 void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
1022 {
1023         struct mlx5e_neigh *m_neigh = &nhe->m_neigh;
1024         u64 bytes, packets, lastuse = 0;
1025         struct mlx5e_tc_flow *flow;
1026         struct mlx5e_encap_entry *e;
1027         struct mlx5_fc *counter;
1028         struct neigh_table *tbl;
1029         bool neigh_used = false;
1030         struct neighbour *n;
1031
1032         if (m_neigh->family == AF_INET)
1033                 tbl = &arp_tbl;
1034 #if IS_ENABLED(CONFIG_IPV6)
1035         else if (m_neigh->family == AF_INET6)
1036                 tbl = &nd_tbl;
1037 #endif
1038         else
1039                 return;
1040
1041         list_for_each_entry(e, &nhe->encap_list, encap_list) {
1042                 if (!(e->flags & MLX5_ENCAP_ENTRY_VALID))
1043                         continue;
1044                 list_for_each_entry(flow, &e->flows, encap) {
1045                         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
1046                                 counter = mlx5e_tc_get_counter(flow);
1047                                 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
1048                                 if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) {
1049                                         neigh_used = true;
1050                                         break;
1051                                 }
1052                         }
1053                 }
1054                 if (neigh_used)
1055                         break;
1056         }
1057
1058         if (neigh_used) {
1059                 nhe->reported_lastuse = jiffies;
1060
1061                 /* find the relevant neigh according to the cached device and
1062                  * dst ip pair
1063                  */
1064                 n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev);
1065                 if (!n)
1066                         return;
1067
1068                 neigh_event_send(n, NULL);
1069                 neigh_release(n);
1070         }
1071 }
1072
1073 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
1074                                struct mlx5e_tc_flow *flow)
1075 {
1076         struct list_head *next = flow->encap.next;
1077
1078         list_del(&flow->encap);
1079         if (list_empty(next)) {
1080                 struct mlx5e_encap_entry *e;
1081
1082                 e = list_entry(next, struct mlx5e_encap_entry, flows);
1083                 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1084
1085                 if (e->flags & MLX5_ENCAP_ENTRY_VALID)
1086                         mlx5_packet_reformat_dealloc(priv->mdev, e->encap_id);
1087
1088                 hash_del_rcu(&e->encap_hlist);
1089                 kfree(e->encap_header);
1090                 kfree(e);
1091         }
1092 }
1093
1094 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
1095                               struct mlx5e_tc_flow *flow)
1096 {
1097         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
1098                 mlx5e_tc_del_fdb_flow(priv, flow);
1099         else
1100                 mlx5e_tc_del_nic_flow(priv, flow);
1101 }
1102
1103 static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
1104                              struct tc_cls_flower_offload *f)
1105 {
1106         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1107                                        outer_headers);
1108         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1109                                        outer_headers);
1110         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1111                                     misc_parameters);
1112         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1113                                     misc_parameters);
1114
1115         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
1116         MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
1117
1118         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
1119                 struct flow_dissector_key_keyid *key =
1120                         skb_flow_dissector_target(f->dissector,
1121                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
1122                                                   f->key);
1123                 struct flow_dissector_key_keyid *mask =
1124                         skb_flow_dissector_target(f->dissector,
1125                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
1126                                                   f->mask);
1127                 MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
1128                          be32_to_cpu(mask->keyid));
1129                 MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
1130                          be32_to_cpu(key->keyid));
1131         }
1132 }
1133
1134 static int parse_tunnel_attr(struct mlx5e_priv *priv,
1135                              struct mlx5_flow_spec *spec,
1136                              struct tc_cls_flower_offload *f)
1137 {
1138         struct netlink_ext_ack *extack = f->common.extack;
1139         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1140                                        outer_headers);
1141         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1142                                        outer_headers);
1143
1144         struct flow_dissector_key_control *enc_control =
1145                 skb_flow_dissector_target(f->dissector,
1146                                           FLOW_DISSECTOR_KEY_ENC_CONTROL,
1147                                           f->key);
1148
1149         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
1150                 struct flow_dissector_key_ports *key =
1151                         skb_flow_dissector_target(f->dissector,
1152                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
1153                                                   f->key);
1154                 struct flow_dissector_key_ports *mask =
1155                         skb_flow_dissector_target(f->dissector,
1156                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
1157                                                   f->mask);
1158
1159                 /* Full udp dst port must be given */
1160                 if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
1161                         goto vxlan_match_offload_err;
1162
1163                 if (mlx5_vxlan_lookup_port(priv->mdev->vxlan, be16_to_cpu(key->dst)) &&
1164                     MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
1165                         parse_vxlan_attr(spec, f);
1166                 else {
1167                         NL_SET_ERR_MSG_MOD(extack,
1168                                            "port isn't an offloaded vxlan udp dport");
1169                         netdev_warn(priv->netdev,
1170                                     "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
1171                         return -EOPNOTSUPP;
1172                 }
1173
1174                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1175                          udp_dport, ntohs(mask->dst));
1176                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1177                          udp_dport, ntohs(key->dst));
1178
1179                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1180                          udp_sport, ntohs(mask->src));
1181                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1182                          udp_sport, ntohs(key->src));
1183         } else { /* udp dst port must be given */
1184 vxlan_match_offload_err:
1185                 NL_SET_ERR_MSG_MOD(extack,
1186                                    "IP tunnel decap offload supported only for vxlan, must set UDP dport");
1187                 netdev_warn(priv->netdev,
1188                             "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
1189                 return -EOPNOTSUPP;
1190         }
1191
1192         if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1193                 struct flow_dissector_key_ipv4_addrs *key =
1194                         skb_flow_dissector_target(f->dissector,
1195                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
1196                                                   f->key);
1197                 struct flow_dissector_key_ipv4_addrs *mask =
1198                         skb_flow_dissector_target(f->dissector,
1199                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
1200                                                   f->mask);
1201                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1202                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
1203                          ntohl(mask->src));
1204                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1205                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
1206                          ntohl(key->src));
1207
1208                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1209                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
1210                          ntohl(mask->dst));
1211                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1212                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
1213                          ntohl(key->dst));
1214
1215                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
1216                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
1217         } else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1218                 struct flow_dissector_key_ipv6_addrs *key =
1219                         skb_flow_dissector_target(f->dissector,
1220                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
1221                                                   f->key);
1222                 struct flow_dissector_key_ipv6_addrs *mask =
1223                         skb_flow_dissector_target(f->dissector,
1224                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
1225                                                   f->mask);
1226
1227                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1228                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
1229                        &mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
1230                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1231                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
1232                        &key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
1233
1234                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1235                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1236                        &mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
1237                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1238                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1239                        &key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
1240
1241                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
1242                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6);
1243         }
1244
1245         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_IP)) {
1246                 struct flow_dissector_key_ip *key =
1247                         skb_flow_dissector_target(f->dissector,
1248                                                   FLOW_DISSECTOR_KEY_ENC_IP,
1249                                                   f->key);
1250                 struct flow_dissector_key_ip *mask =
1251                         skb_flow_dissector_target(f->dissector,
1252                                                   FLOW_DISSECTOR_KEY_ENC_IP,
1253                                                   f->mask);
1254
1255                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, mask->tos & 0x3);
1256                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, key->tos & 0x3);
1257
1258                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, mask->tos >> 2);
1259                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, key->tos  >> 2);
1260
1261                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, mask->ttl);
1262                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, key->ttl);
1263
1264                 if (mask->ttl &&
1265                     !MLX5_CAP_ESW_FLOWTABLE_FDB
1266                         (priv->mdev,
1267                          ft_field_support.outer_ipv4_ttl)) {
1268                         NL_SET_ERR_MSG_MOD(extack,
1269                                            "Matching on TTL is not supported");
1270                         return -EOPNOTSUPP;
1271                 }
1272
1273         }
1274
1275         /* Enforce DMAC when offloading incoming tunneled flows.
1276          * Flow counters require a match on the DMAC.
1277          */
1278         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
1279         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
1280         ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1281                                      dmac_47_16), priv->netdev->dev_addr);
1282
1283         /* let software handle IP fragments */
1284         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
1285         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
1286
1287         return 0;
1288 }
1289
1290 static int __parse_cls_flower(struct mlx5e_priv *priv,
1291                               struct mlx5_flow_spec *spec,
1292                               struct tc_cls_flower_offload *f,
1293                               u8 *match_level)
1294 {
1295         struct netlink_ext_ack *extack = f->common.extack;
1296         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1297                                        outer_headers);
1298         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1299                                        outer_headers);
1300         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1301                                     misc_parameters);
1302         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1303                                     misc_parameters);
1304         u16 addr_type = 0;
1305         u8 ip_proto = 0;
1306
1307         *match_level = MLX5_MATCH_NONE;
1308
1309         if (f->dissector->used_keys &
1310             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
1311               BIT(FLOW_DISSECTOR_KEY_BASIC) |
1312               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
1313               BIT(FLOW_DISSECTOR_KEY_VLAN) |
1314               BIT(FLOW_DISSECTOR_KEY_CVLAN) |
1315               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
1316               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
1317               BIT(FLOW_DISSECTOR_KEY_PORTS) |
1318               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
1319               BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
1320               BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
1321               BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
1322               BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
1323               BIT(FLOW_DISSECTOR_KEY_TCP) |
1324               BIT(FLOW_DISSECTOR_KEY_IP)  |
1325               BIT(FLOW_DISSECTOR_KEY_ENC_IP))) {
1326                 NL_SET_ERR_MSG_MOD(extack, "Unsupported key");
1327                 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
1328                             f->dissector->used_keys);
1329                 return -EOPNOTSUPP;
1330         }
1331
1332         if ((dissector_uses_key(f->dissector,
1333                                 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
1334              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
1335              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
1336             dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
1337                 struct flow_dissector_key_control *key =
1338                         skb_flow_dissector_target(f->dissector,
1339                                                   FLOW_DISSECTOR_KEY_ENC_CONTROL,
1340                                                   f->key);
1341                 switch (key->addr_type) {
1342                 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
1343                 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
1344                         if (parse_tunnel_attr(priv, spec, f))
1345                                 return -EOPNOTSUPP;
1346                         break;
1347                 default:
1348                         return -EOPNOTSUPP;
1349                 }
1350
1351                 /* In decap flow, header pointers should point to the inner
1352                  * headers, outer header were already set by parse_tunnel_attr
1353                  */
1354                 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1355                                          inner_headers);
1356                 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1357                                          inner_headers);
1358         }
1359
1360         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
1361                 struct flow_dissector_key_eth_addrs *key =
1362                         skb_flow_dissector_target(f->dissector,
1363                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
1364                                                   f->key);
1365                 struct flow_dissector_key_eth_addrs *mask =
1366                         skb_flow_dissector_target(f->dissector,
1367                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
1368                                                   f->mask);
1369
1370                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1371                                              dmac_47_16),
1372                                 mask->dst);
1373                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1374                                              dmac_47_16),
1375                                 key->dst);
1376
1377                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1378                                              smac_47_16),
1379                                 mask->src);
1380                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1381                                              smac_47_16),
1382                                 key->src);
1383
1384                 if (!is_zero_ether_addr(mask->src) || !is_zero_ether_addr(mask->dst))
1385                         *match_level = MLX5_MATCH_L2;
1386         }
1387
1388         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
1389                 struct flow_dissector_key_vlan *key =
1390                         skb_flow_dissector_target(f->dissector,
1391                                                   FLOW_DISSECTOR_KEY_VLAN,
1392                                                   f->key);
1393                 struct flow_dissector_key_vlan *mask =
1394                         skb_flow_dissector_target(f->dissector,
1395                                                   FLOW_DISSECTOR_KEY_VLAN,
1396                                                   f->mask);
1397                 if (mask->vlan_id || mask->vlan_priority || mask->vlan_tpid) {
1398                         if (key->vlan_tpid == htons(ETH_P_8021AD)) {
1399                                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1400                                          svlan_tag, 1);
1401                                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1402                                          svlan_tag, 1);
1403                         } else {
1404                                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1405                                          cvlan_tag, 1);
1406                                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1407                                          cvlan_tag, 1);
1408                         }
1409
1410                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
1411                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
1412
1413                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
1414                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
1415
1416                         *match_level = MLX5_MATCH_L2;
1417                 }
1418         } else {
1419                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, svlan_tag, 1);
1420                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
1421         }
1422
1423         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CVLAN)) {
1424                 struct flow_dissector_key_vlan *key =
1425                         skb_flow_dissector_target(f->dissector,
1426                                                   FLOW_DISSECTOR_KEY_CVLAN,
1427                                                   f->key);
1428                 struct flow_dissector_key_vlan *mask =
1429                         skb_flow_dissector_target(f->dissector,
1430                                                   FLOW_DISSECTOR_KEY_CVLAN,
1431                                                   f->mask);
1432                 if (mask->vlan_id || mask->vlan_priority || mask->vlan_tpid) {
1433                         if (key->vlan_tpid == htons(ETH_P_8021AD)) {
1434                                 MLX5_SET(fte_match_set_misc, misc_c,
1435                                          outer_second_svlan_tag, 1);
1436                                 MLX5_SET(fte_match_set_misc, misc_v,
1437                                          outer_second_svlan_tag, 1);
1438                         } else {
1439                                 MLX5_SET(fte_match_set_misc, misc_c,
1440                                          outer_second_cvlan_tag, 1);
1441                                 MLX5_SET(fte_match_set_misc, misc_v,
1442                                          outer_second_cvlan_tag, 1);
1443                         }
1444
1445                         MLX5_SET(fte_match_set_misc, misc_c, outer_second_vid,
1446                                  mask->vlan_id);
1447                         MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid,
1448                                  key->vlan_id);
1449                         MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio,
1450                                  mask->vlan_priority);
1451                         MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio,
1452                                  key->vlan_priority);
1453
1454                         *match_level = MLX5_MATCH_L2;
1455                 }
1456         }
1457
1458         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
1459                 struct flow_dissector_key_basic *key =
1460                         skb_flow_dissector_target(f->dissector,
1461                                                   FLOW_DISSECTOR_KEY_BASIC,
1462                                                   f->key);
1463                 struct flow_dissector_key_basic *mask =
1464                         skb_flow_dissector_target(f->dissector,
1465                                                   FLOW_DISSECTOR_KEY_BASIC,
1466                                                   f->mask);
1467                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
1468                          ntohs(mask->n_proto));
1469                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
1470                          ntohs(key->n_proto));
1471
1472                 if (mask->n_proto)
1473                         *match_level = MLX5_MATCH_L2;
1474         }
1475
1476         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
1477                 struct flow_dissector_key_control *key =
1478                         skb_flow_dissector_target(f->dissector,
1479                                                   FLOW_DISSECTOR_KEY_CONTROL,
1480                                                   f->key);
1481
1482                 struct flow_dissector_key_control *mask =
1483                         skb_flow_dissector_target(f->dissector,
1484                                                   FLOW_DISSECTOR_KEY_CONTROL,
1485                                                   f->mask);
1486                 addr_type = key->addr_type;
1487
1488                 /* the HW doesn't support frag first/later */
1489                 if (mask->flags & FLOW_DIS_FIRST_FRAG)
1490                         return -EOPNOTSUPP;
1491
1492                 if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
1493                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
1494                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
1495                                  key->flags & FLOW_DIS_IS_FRAGMENT);
1496
1497                         /* the HW doesn't need L3 inline to match on frag=no */
1498                         if (!(key->flags & FLOW_DIS_IS_FRAGMENT))
1499                                 *match_level = MLX5_INLINE_MODE_L2;
1500         /* ***  L2 attributes parsing up to here *** */
1501                         else
1502                                 *match_level = MLX5_INLINE_MODE_IP;
1503                 }
1504         }
1505
1506         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
1507                 struct flow_dissector_key_basic *key =
1508                         skb_flow_dissector_target(f->dissector,
1509                                                   FLOW_DISSECTOR_KEY_BASIC,
1510                                                   f->key);
1511                 struct flow_dissector_key_basic *mask =
1512                         skb_flow_dissector_target(f->dissector,
1513                                                   FLOW_DISSECTOR_KEY_BASIC,
1514                                                   f->mask);
1515                 ip_proto = key->ip_proto;
1516
1517                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
1518                          mask->ip_proto);
1519                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
1520                          key->ip_proto);
1521
1522                 if (mask->ip_proto)
1523                         *match_level = MLX5_MATCH_L3;
1524         }
1525
1526         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1527                 struct flow_dissector_key_ipv4_addrs *key =
1528                         skb_flow_dissector_target(f->dissector,
1529                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
1530                                                   f->key);
1531                 struct flow_dissector_key_ipv4_addrs *mask =
1532                         skb_flow_dissector_target(f->dissector,
1533                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
1534                                                   f->mask);
1535
1536                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1537                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
1538                        &mask->src, sizeof(mask->src));
1539                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1540                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
1541                        &key->src, sizeof(key->src));
1542                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1543                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
1544                        &mask->dst, sizeof(mask->dst));
1545                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1546                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
1547                        &key->dst, sizeof(key->dst));
1548
1549                 if (mask->src || mask->dst)
1550                         *match_level = MLX5_MATCH_L3;
1551         }
1552
1553         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1554                 struct flow_dissector_key_ipv6_addrs *key =
1555                         skb_flow_dissector_target(f->dissector,
1556                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
1557                                                   f->key);
1558                 struct flow_dissector_key_ipv6_addrs *mask =
1559                         skb_flow_dissector_target(f->dissector,
1560                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
1561                                                   f->mask);
1562
1563                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1564                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
1565                        &mask->src, sizeof(mask->src));
1566                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1567                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
1568                        &key->src, sizeof(key->src));
1569
1570                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1571                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1572                        &mask->dst, sizeof(mask->dst));
1573                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1574                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1575                        &key->dst, sizeof(key->dst));
1576
1577                 if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
1578                     ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
1579                         *match_level = MLX5_MATCH_L3;
1580         }
1581
1582         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_IP)) {
1583                 struct flow_dissector_key_ip *key =
1584                         skb_flow_dissector_target(f->dissector,
1585                                                   FLOW_DISSECTOR_KEY_IP,
1586                                                   f->key);
1587                 struct flow_dissector_key_ip *mask =
1588                         skb_flow_dissector_target(f->dissector,
1589                                                   FLOW_DISSECTOR_KEY_IP,
1590                                                   f->mask);
1591
1592                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, mask->tos & 0x3);
1593                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, key->tos & 0x3);
1594
1595                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, mask->tos >> 2);
1596                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, key->tos  >> 2);
1597
1598                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, mask->ttl);
1599                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, key->ttl);
1600
1601                 if (mask->ttl &&
1602                     !MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
1603                                                 ft_field_support.outer_ipv4_ttl)) {
1604                         NL_SET_ERR_MSG_MOD(extack,
1605                                            "Matching on TTL is not supported");
1606                         return -EOPNOTSUPP;
1607                 }
1608
1609                 if (mask->tos || mask->ttl)
1610                         *match_level = MLX5_MATCH_L3;
1611         }
1612
1613         /* ***  L3 attributes parsing up to here *** */
1614
1615         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
1616                 struct flow_dissector_key_ports *key =
1617                         skb_flow_dissector_target(f->dissector,
1618                                                   FLOW_DISSECTOR_KEY_PORTS,
1619                                                   f->key);
1620                 struct flow_dissector_key_ports *mask =
1621                         skb_flow_dissector_target(f->dissector,
1622                                                   FLOW_DISSECTOR_KEY_PORTS,
1623                                                   f->mask);
1624                 switch (ip_proto) {
1625                 case IPPROTO_TCP:
1626                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1627                                  tcp_sport, ntohs(mask->src));
1628                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1629                                  tcp_sport, ntohs(key->src));
1630
1631                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1632                                  tcp_dport, ntohs(mask->dst));
1633                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1634                                  tcp_dport, ntohs(key->dst));
1635                         break;
1636
1637                 case IPPROTO_UDP:
1638                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1639                                  udp_sport, ntohs(mask->src));
1640                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1641                                  udp_sport, ntohs(key->src));
1642
1643                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1644                                  udp_dport, ntohs(mask->dst));
1645                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1646                                  udp_dport, ntohs(key->dst));
1647                         break;
1648                 default:
1649                         NL_SET_ERR_MSG_MOD(extack,
1650                                            "Only UDP and TCP transports are supported for L4 matching");
1651                         netdev_err(priv->netdev,
1652                                    "Only UDP and TCP transport are supported\n");
1653                         return -EINVAL;
1654                 }
1655
1656                 if (mask->src || mask->dst)
1657                         *match_level = MLX5_MATCH_L4;
1658         }
1659
1660         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_TCP)) {
1661                 struct flow_dissector_key_tcp *key =
1662                         skb_flow_dissector_target(f->dissector,
1663                                                   FLOW_DISSECTOR_KEY_TCP,
1664                                                   f->key);
1665                 struct flow_dissector_key_tcp *mask =
1666                         skb_flow_dissector_target(f->dissector,
1667                                                   FLOW_DISSECTOR_KEY_TCP,
1668                                                   f->mask);
1669
1670                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
1671                          ntohs(mask->flags));
1672                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
1673                          ntohs(key->flags));
1674
1675                 if (mask->flags)
1676                         *match_level = MLX5_MATCH_L4;
1677         }
1678
1679         return 0;
1680 }
1681
1682 static int parse_cls_flower(struct mlx5e_priv *priv,
1683                             struct mlx5e_tc_flow *flow,
1684                             struct mlx5_flow_spec *spec,
1685                             struct tc_cls_flower_offload *f)
1686 {
1687         struct netlink_ext_ack *extack = f->common.extack;
1688         struct mlx5_core_dev *dev = priv->mdev;
1689         struct mlx5_eswitch *esw = dev->priv.eswitch;
1690         struct mlx5e_rep_priv *rpriv = priv->ppriv;
1691         struct mlx5_eswitch_rep *rep;
1692         u8 match_level;
1693         int err;
1694
1695         err = __parse_cls_flower(priv, spec, f, &match_level);
1696
1697         if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH)) {
1698                 rep = rpriv->rep;
1699                 if (rep->vport != FDB_UPLINK_VPORT &&
1700                     (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
1701                     esw->offloads.inline_mode < match_level)) {
1702                         NL_SET_ERR_MSG_MOD(extack,
1703                                            "Flow is not offloaded due to min inline setting");
1704                         netdev_warn(priv->netdev,
1705                                     "Flow is not offloaded due to min inline setting, required %d actual %d\n",
1706                                     match_level, esw->offloads.inline_mode);
1707                         return -EOPNOTSUPP;
1708                 }
1709         }
1710
1711         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
1712                 flow->esw_attr->match_level = match_level;
1713         else
1714                 flow->nic_attr->match_level = match_level;
1715
1716         return err;
1717 }
1718
1719 struct pedit_headers {
1720         struct ethhdr  eth;
1721         struct iphdr   ip4;
1722         struct ipv6hdr ip6;
1723         struct tcphdr  tcp;
1724         struct udphdr  udp;
1725 };
1726
1727 static int pedit_header_offsets[] = {
1728         [TCA_PEDIT_KEY_EX_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth),
1729         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4),
1730         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6),
1731         [TCA_PEDIT_KEY_EX_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp),
1732         [TCA_PEDIT_KEY_EX_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp),
1733 };
1734
1735 #define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype])
1736
1737 static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset,
1738                          struct pedit_headers *masks,
1739                          struct pedit_headers *vals)
1740 {
1741         u32 *curr_pmask, *curr_pval;
1742
1743         if (hdr_type >= __PEDIT_HDR_TYPE_MAX)
1744                 goto out_err;
1745
1746         curr_pmask = (u32 *)(pedit_header(masks, hdr_type) + offset);
1747         curr_pval  = (u32 *)(pedit_header(vals, hdr_type) + offset);
1748
1749         if (*curr_pmask & mask)  /* disallow acting twice on the same location */
1750                 goto out_err;
1751
1752         *curr_pmask |= mask;
1753         *curr_pval  |= (val & mask);
1754
1755         return 0;
1756
1757 out_err:
1758         return -EOPNOTSUPP;
1759 }
1760
1761 struct mlx5_fields {
1762         u8  field;
1763         u8  size;
1764         u32 offset;
1765 };
1766
1767 #define OFFLOAD(fw_field, size, field, off) \
1768                 {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, size, offsetof(struct pedit_headers, field) + (off)}
1769
1770 static struct mlx5_fields fields[] = {
1771         OFFLOAD(DMAC_47_16, 4, eth.h_dest[0], 0),
1772         OFFLOAD(DMAC_15_0,  2, eth.h_dest[4], 0),
1773         OFFLOAD(SMAC_47_16, 4, eth.h_source[0], 0),
1774         OFFLOAD(SMAC_15_0,  2, eth.h_source[4], 0),
1775         OFFLOAD(ETHERTYPE,  2, eth.h_proto, 0),
1776
1777         OFFLOAD(IP_TTL, 1, ip4.ttl,   0),
1778         OFFLOAD(SIPV4,  4, ip4.saddr, 0),
1779         OFFLOAD(DIPV4,  4, ip4.daddr, 0),
1780
1781         OFFLOAD(SIPV6_127_96, 4, ip6.saddr.s6_addr32[0], 0),
1782         OFFLOAD(SIPV6_95_64,  4, ip6.saddr.s6_addr32[1], 0),
1783         OFFLOAD(SIPV6_63_32,  4, ip6.saddr.s6_addr32[2], 0),
1784         OFFLOAD(SIPV6_31_0,   4, ip6.saddr.s6_addr32[3], 0),
1785         OFFLOAD(DIPV6_127_96, 4, ip6.daddr.s6_addr32[0], 0),
1786         OFFLOAD(DIPV6_95_64,  4, ip6.daddr.s6_addr32[1], 0),
1787         OFFLOAD(DIPV6_63_32,  4, ip6.daddr.s6_addr32[2], 0),
1788         OFFLOAD(DIPV6_31_0,   4, ip6.daddr.s6_addr32[3], 0),
1789         OFFLOAD(IPV6_HOPLIMIT, 1, ip6.hop_limit, 0),
1790
1791         OFFLOAD(TCP_SPORT, 2, tcp.source,  0),
1792         OFFLOAD(TCP_DPORT, 2, tcp.dest,    0),
1793         OFFLOAD(TCP_FLAGS, 1, tcp.ack_seq, 5),
1794
1795         OFFLOAD(UDP_SPORT, 2, udp.source, 0),
1796         OFFLOAD(UDP_DPORT, 2, udp.dest,   0),
1797 };
1798
1799 /* On input attr->num_mod_hdr_actions tells how many HW actions can be parsed at
1800  * max from the SW pedit action. On success, it says how many HW actions were
1801  * actually parsed.
1802  */
1803 static int offload_pedit_fields(struct pedit_headers *masks,
1804                                 struct pedit_headers *vals,
1805                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
1806                                 struct netlink_ext_ack *extack)
1807 {
1808         struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
1809         int i, action_size, nactions, max_actions, first, last, next_z;
1810         void *s_masks_p, *a_masks_p, *vals_p;
1811         struct mlx5_fields *f;
1812         u8 cmd, field_bsize;
1813         u32 s_mask, a_mask;
1814         unsigned long mask;
1815         __be32 mask_be32;
1816         __be16 mask_be16;
1817         void *action;
1818
1819         set_masks = &masks[TCA_PEDIT_KEY_EX_CMD_SET];
1820         add_masks = &masks[TCA_PEDIT_KEY_EX_CMD_ADD];
1821         set_vals = &vals[TCA_PEDIT_KEY_EX_CMD_SET];
1822         add_vals = &vals[TCA_PEDIT_KEY_EX_CMD_ADD];
1823
1824         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
1825         action = parse_attr->mod_hdr_actions;
1826         max_actions = parse_attr->num_mod_hdr_actions;
1827         nactions = 0;
1828
1829         for (i = 0; i < ARRAY_SIZE(fields); i++) {
1830                 f = &fields[i];
1831                 /* avoid seeing bits set from previous iterations */
1832                 s_mask = 0;
1833                 a_mask = 0;
1834
1835                 s_masks_p = (void *)set_masks + f->offset;
1836                 a_masks_p = (void *)add_masks + f->offset;
1837
1838                 memcpy(&s_mask, s_masks_p, f->size);
1839                 memcpy(&a_mask, a_masks_p, f->size);
1840
1841                 if (!s_mask && !a_mask) /* nothing to offload here */
1842                         continue;
1843
1844                 if (s_mask && a_mask) {
1845                         NL_SET_ERR_MSG_MOD(extack,
1846                                            "can't set and add to the same HW field");
1847                         printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field);
1848                         return -EOPNOTSUPP;
1849                 }
1850
1851                 if (nactions == max_actions) {
1852                         NL_SET_ERR_MSG_MOD(extack,
1853                                            "too many pedit actions, can't offload");
1854                         printk(KERN_WARNING "mlx5: parsed %d pedit actions, can't do more\n", nactions);
1855                         return -EOPNOTSUPP;
1856                 }
1857
1858                 if (s_mask) {
1859                         cmd  = MLX5_ACTION_TYPE_SET;
1860                         mask = s_mask;
1861                         vals_p = (void *)set_vals + f->offset;
1862                         /* clear to denote we consumed this field */
1863                         memset(s_masks_p, 0, f->size);
1864                 } else {
1865                         cmd  = MLX5_ACTION_TYPE_ADD;
1866                         mask = a_mask;
1867                         vals_p = (void *)add_vals + f->offset;
1868                         /* clear to denote we consumed this field */
1869                         memset(a_masks_p, 0, f->size);
1870                 }
1871
1872                 field_bsize = f->size * BITS_PER_BYTE;
1873
1874                 if (field_bsize == 32) {
1875                         mask_be32 = *(__be32 *)&mask;
1876                         mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32));
1877                 } else if (field_bsize == 16) {
1878                         mask_be16 = *(__be16 *)&mask;
1879                         mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16));
1880                 }
1881
1882                 first = find_first_bit(&mask, field_bsize);
1883                 next_z = find_next_zero_bit(&mask, field_bsize, first);
1884                 last  = find_last_bit(&mask, field_bsize);
1885                 if (first < next_z && next_z < last) {
1886                         NL_SET_ERR_MSG_MOD(extack,
1887                                            "rewrite of few sub-fields isn't supported");
1888                         printk(KERN_WARNING "mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n",
1889                                mask);
1890                         return -EOPNOTSUPP;
1891                 }
1892
1893                 MLX5_SET(set_action_in, action, action_type, cmd);
1894                 MLX5_SET(set_action_in, action, field, f->field);
1895
1896                 if (cmd == MLX5_ACTION_TYPE_SET) {
1897                         MLX5_SET(set_action_in, action, offset, first);
1898                         /* length is num of bits to be written, zero means length of 32 */
1899                         MLX5_SET(set_action_in, action, length, (last - first + 1));
1900                 }
1901
1902                 if (field_bsize == 32)
1903                         MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first);
1904                 else if (field_bsize == 16)
1905                         MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first);
1906                 else if (field_bsize == 8)
1907                         MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first);
1908
1909                 action += action_size;
1910                 nactions++;
1911         }
1912
1913         parse_attr->num_mod_hdr_actions = nactions;
1914         return 0;
1915 }
1916
1917 static int alloc_mod_hdr_actions(struct mlx5e_priv *priv,
1918                                  const struct tc_action *a, int namespace,
1919                                  struct mlx5e_tc_flow_parse_attr *parse_attr)
1920 {
1921         int nkeys, action_size, max_actions;
1922
1923         nkeys = tcf_pedit_nkeys(a);
1924         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
1925
1926         if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
1927                 max_actions = MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, max_modify_header_actions);
1928         else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
1929                 max_actions = MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, max_modify_header_actions);
1930
1931         /* can get up to crazingly 16 HW actions in 32 bits pedit SW key */
1932         max_actions = min(max_actions, nkeys * 16);
1933
1934         parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL);
1935         if (!parse_attr->mod_hdr_actions)
1936                 return -ENOMEM;
1937
1938         parse_attr->num_mod_hdr_actions = max_actions;
1939         return 0;
1940 }
1941
1942 static const struct pedit_headers zero_masks = {};
1943
1944 static int parse_tc_pedit_action(struct mlx5e_priv *priv,
1945                                  const struct tc_action *a, int namespace,
1946                                  struct mlx5e_tc_flow_parse_attr *parse_attr,
1947                                  struct netlink_ext_ack *extack)
1948 {
1949         struct pedit_headers masks[__PEDIT_CMD_MAX], vals[__PEDIT_CMD_MAX], *cmd_masks;
1950         int nkeys, i, err = -EOPNOTSUPP;
1951         u32 mask, val, offset;
1952         u8 cmd, htype;
1953
1954         nkeys = tcf_pedit_nkeys(a);
1955
1956         memset(masks, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1957         memset(vals,  0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1958
1959         for (i = 0; i < nkeys; i++) {
1960                 htype = tcf_pedit_htype(a, i);
1961                 cmd = tcf_pedit_cmd(a, i);
1962                 err = -EOPNOTSUPP; /* can't be all optimistic */
1963
1964                 if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK) {
1965                         NL_SET_ERR_MSG_MOD(extack,
1966                                            "legacy pedit isn't offloaded");
1967                         goto out_err;
1968                 }
1969
1970                 if (cmd != TCA_PEDIT_KEY_EX_CMD_SET && cmd != TCA_PEDIT_KEY_EX_CMD_ADD) {
1971                         NL_SET_ERR_MSG_MOD(extack, "pedit cmd isn't offloaded");
1972                         goto out_err;
1973                 }
1974
1975                 mask = tcf_pedit_mask(a, i);
1976                 val = tcf_pedit_val(a, i);
1977                 offset = tcf_pedit_offset(a, i);
1978
1979                 err = set_pedit_val(htype, ~mask, val, offset, &masks[cmd], &vals[cmd]);
1980                 if (err)
1981                         goto out_err;
1982         }
1983
1984         err = alloc_mod_hdr_actions(priv, a, namespace, parse_attr);
1985         if (err)
1986                 goto out_err;
1987
1988         err = offload_pedit_fields(masks, vals, parse_attr, extack);
1989         if (err < 0)
1990                 goto out_dealloc_parsed_actions;
1991
1992         for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
1993                 cmd_masks = &masks[cmd];
1994                 if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
1995                         NL_SET_ERR_MSG_MOD(extack,
1996                                            "attempt to offload an unsupported field");
1997                         netdev_warn(priv->netdev, "attempt to offload an unsupported field (cmd %d)\n", cmd);
1998                         print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
1999                                        16, 1, cmd_masks, sizeof(zero_masks), true);
2000                         err = -EOPNOTSUPP;
2001                         goto out_dealloc_parsed_actions;
2002                 }
2003         }
2004
2005         return 0;
2006
2007 out_dealloc_parsed_actions:
2008         kfree(parse_attr->mod_hdr_actions);
2009 out_err:
2010         return err;
2011 }
2012
2013 static bool csum_offload_supported(struct mlx5e_priv *priv,
2014                                    u32 action,
2015                                    u32 update_flags,
2016                                    struct netlink_ext_ack *extack)
2017 {
2018         u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP |
2019                          TCA_CSUM_UPDATE_FLAG_UDP;
2020
2021         /*  The HW recalcs checksums only if re-writing headers */
2022         if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) {
2023                 NL_SET_ERR_MSG_MOD(extack,
2024                                    "TC csum action is only offloaded with pedit");
2025                 netdev_warn(priv->netdev,
2026                             "TC csum action is only offloaded with pedit\n");
2027                 return false;
2028         }
2029
2030         if (update_flags & ~prot_flags) {
2031                 NL_SET_ERR_MSG_MOD(extack,
2032                                    "can't offload TC csum action for some header/s");
2033                 netdev_warn(priv->netdev,
2034                             "can't offload TC csum action for some header/s - flags %#x\n",
2035                             update_flags);
2036                 return false;
2037         }
2038
2039         return true;
2040 }
2041
2042 static bool modify_header_match_supported(struct mlx5_flow_spec *spec,
2043                                           struct tcf_exts *exts,
2044                                           struct netlink_ext_ack *extack)
2045 {
2046         const struct tc_action *a;
2047         bool modify_ip_header;
2048         LIST_HEAD(actions);
2049         u8 htype, ip_proto;
2050         void *headers_v;
2051         u16 ethertype;
2052         int nkeys, i;
2053
2054         headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
2055         ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
2056
2057         /* for non-IP we only re-write MACs, so we're okay */
2058         if (ethertype != ETH_P_IP && ethertype != ETH_P_IPV6)
2059                 goto out_ok;
2060
2061         modify_ip_header = false;
2062         tcf_exts_for_each_action(i, a, exts) {
2063                 int k;
2064
2065                 if (!is_tcf_pedit(a))
2066                         continue;
2067
2068                 nkeys = tcf_pedit_nkeys(a);
2069                 for (k = 0; k < nkeys; k++) {
2070                         htype = tcf_pedit_htype(a, k);
2071                         if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_IP4 ||
2072                             htype == TCA_PEDIT_KEY_EX_HDR_TYPE_IP6) {
2073                                 modify_ip_header = true;
2074                                 break;
2075                         }
2076                 }
2077         }
2078
2079         ip_proto = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol);
2080         if (modify_ip_header && ip_proto != IPPROTO_TCP &&
2081             ip_proto != IPPROTO_UDP && ip_proto != IPPROTO_ICMP) {
2082                 NL_SET_ERR_MSG_MOD(extack,
2083                                    "can't offload re-write of non TCP/UDP");
2084                 pr_info("can't offload re-write of ip proto %d\n", ip_proto);
2085                 return false;
2086         }
2087
2088 out_ok:
2089         return true;
2090 }
2091
2092 static bool actions_match_supported(struct mlx5e_priv *priv,
2093                                     struct tcf_exts *exts,
2094                                     struct mlx5e_tc_flow_parse_attr *parse_attr,
2095                                     struct mlx5e_tc_flow *flow,
2096                                     struct netlink_ext_ack *extack)
2097 {
2098         u32 actions;
2099
2100         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
2101                 actions = flow->esw_attr->action;
2102         else
2103                 actions = flow->nic_attr->action;
2104
2105         if (flow->flags & MLX5E_TC_FLOW_EGRESS &&
2106             !(actions & MLX5_FLOW_CONTEXT_ACTION_DECAP))
2107                 return false;
2108
2109         if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
2110                 return modify_header_match_supported(&parse_attr->spec, exts,
2111                                                      extack);
2112
2113         return true;
2114 }
2115
2116 static bool same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
2117 {
2118         struct mlx5_core_dev *fmdev, *pmdev;
2119         u64 fsystem_guid, psystem_guid;
2120
2121         fmdev = priv->mdev;
2122         pmdev = peer_priv->mdev;
2123
2124         fsystem_guid = mlx5_query_nic_system_image_guid(fmdev);
2125         psystem_guid = mlx5_query_nic_system_image_guid(pmdev);
2126
2127         return (fsystem_guid == psystem_guid);
2128 }
2129
2130 static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
2131                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
2132                                 struct mlx5e_tc_flow *flow,
2133                                 struct netlink_ext_ack *extack)
2134 {
2135         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
2136         const struct tc_action *a;
2137         LIST_HEAD(actions);
2138         u32 action = 0;
2139         int err, i;
2140
2141         if (!tcf_exts_has_actions(exts))
2142                 return -EINVAL;
2143
2144         attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
2145
2146         tcf_exts_for_each_action(i, a, exts) {
2147                 if (is_tcf_gact_shot(a)) {
2148                         action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
2149                         if (MLX5_CAP_FLOWTABLE(priv->mdev,
2150                                                flow_table_properties_nic_receive.flow_counter))
2151                                 action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
2152                         continue;
2153                 }
2154
2155                 if (is_tcf_pedit(a)) {
2156                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_KERNEL,
2157                                                     parse_attr, extack);
2158                         if (err)
2159                                 return err;
2160
2161                         action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR |
2162                                   MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2163                         continue;
2164                 }
2165
2166                 if (is_tcf_csum(a)) {
2167                         if (csum_offload_supported(priv, action,
2168                                                    tcf_csum_update_flags(a),
2169                                                    extack))
2170                                 continue;
2171
2172                         return -EOPNOTSUPP;
2173                 }
2174
2175                 if (is_tcf_mirred_egress_redirect(a)) {
2176                         struct net_device *peer_dev = tcf_mirred_dev(a);
2177
2178                         if (priv->netdev->netdev_ops == peer_dev->netdev_ops &&
2179                             same_hw_devs(priv, netdev_priv(peer_dev))) {
2180                                 parse_attr->mirred_ifindex = peer_dev->ifindex;
2181                                 flow->flags |= MLX5E_TC_FLOW_HAIRPIN;
2182                                 action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2183                                           MLX5_FLOW_CONTEXT_ACTION_COUNT;
2184                         } else {
2185                                 NL_SET_ERR_MSG_MOD(extack,
2186                                                    "device is not on same HW, can't offload");
2187                                 netdev_warn(priv->netdev, "device %s not on same HW, can't offload\n",
2188                                             peer_dev->name);
2189                                 return -EINVAL;
2190                         }
2191                         continue;
2192                 }
2193
2194                 if (is_tcf_skbedit_mark(a)) {
2195                         u32 mark = tcf_skbedit_mark(a);
2196
2197                         if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
2198                                 NL_SET_ERR_MSG_MOD(extack,
2199                                                    "Bad flow mark - only 16 bit is supported");
2200                                 return -EINVAL;
2201                         }
2202
2203                         attr->flow_tag = mark;
2204                         action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2205                         continue;
2206                 }
2207
2208                 return -EINVAL;
2209         }
2210
2211         attr->action = action;
2212         if (!actions_match_supported(priv, exts, parse_attr, flow, extack))
2213                 return -EOPNOTSUPP;
2214
2215         return 0;
2216 }
2217
2218 static inline int cmp_encap_info(struct ip_tunnel_key *a,
2219                                  struct ip_tunnel_key *b)
2220 {
2221         return memcmp(a, b, sizeof(*a));
2222 }
2223
2224 static inline int hash_encap_info(struct ip_tunnel_key *key)
2225 {
2226         return jhash(key, sizeof(*key), 0);
2227 }
2228
2229 static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
2230                                    struct net_device *mirred_dev,
2231                                    struct net_device **out_dev,
2232                                    struct flowi4 *fl4,
2233                                    struct neighbour **out_n,
2234                                    u8 *out_ttl)
2235 {
2236         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2237         struct mlx5e_rep_priv *uplink_rpriv;
2238         struct rtable *rt;
2239         struct neighbour *n = NULL;
2240
2241 #if IS_ENABLED(CONFIG_INET)
2242         int ret;
2243
2244         rt = ip_route_output_key(dev_net(mirred_dev), fl4);
2245         ret = PTR_ERR_OR_ZERO(rt);
2246         if (ret)
2247                 return ret;
2248 #else
2249         return -EOPNOTSUPP;
2250 #endif
2251         uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
2252         /* if the egress device isn't on the same HW e-switch, we use the uplink */
2253         if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
2254                 *out_dev = uplink_rpriv->netdev;
2255         else
2256                 *out_dev = rt->dst.dev;
2257
2258         if (!(*out_ttl))
2259                 *out_ttl = ip4_dst_hoplimit(&rt->dst);
2260         n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
2261         ip_rt_put(rt);
2262         if (!n)
2263                 return -ENOMEM;
2264
2265         *out_n = n;
2266         return 0;
2267 }
2268
2269 static bool is_merged_eswitch_dev(struct mlx5e_priv *priv,
2270                                   struct net_device *peer_netdev)
2271 {
2272         struct mlx5e_priv *peer_priv;
2273
2274         peer_priv = netdev_priv(peer_netdev);
2275
2276         return (MLX5_CAP_ESW(priv->mdev, merged_eswitch) &&
2277                 (priv->netdev->netdev_ops == peer_netdev->netdev_ops) &&
2278                 same_hw_devs(priv, peer_priv) &&
2279                 MLX5_VPORT_MANAGER(peer_priv->mdev) &&
2280                 (peer_priv->mdev->priv.eswitch->mode == SRIOV_OFFLOADS));
2281 }
2282
2283 static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
2284                                    struct net_device *mirred_dev,
2285                                    struct net_device **out_dev,
2286                                    struct flowi6 *fl6,
2287                                    struct neighbour **out_n,
2288                                    u8 *out_ttl)
2289 {
2290         struct neighbour *n = NULL;
2291         struct dst_entry *dst;
2292
2293 #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
2294         struct mlx5e_rep_priv *uplink_rpriv;
2295         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2296         int ret;
2297
2298         ret = ipv6_stub->ipv6_dst_lookup(dev_net(mirred_dev), NULL, &dst,
2299                                          fl6);
2300         if (ret < 0)
2301                 return ret;
2302
2303         if (!(*out_ttl))
2304                 *out_ttl = ip6_dst_hoplimit(dst);
2305
2306         uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
2307         /* if the egress device isn't on the same HW e-switch, we use the uplink */
2308         if (!switchdev_port_same_parent_id(priv->netdev, dst->dev))
2309                 *out_dev = uplink_rpriv->netdev;
2310         else
2311                 *out_dev = dst->dev;
2312 #else
2313         return -EOPNOTSUPP;
2314 #endif
2315
2316         n = dst_neigh_lookup(dst, &fl6->daddr);
2317         dst_release(dst);
2318         if (!n)
2319                 return -ENOMEM;
2320
2321         *out_n = n;
2322         return 0;
2323 }
2324
2325 static void gen_vxlan_header_ipv4(struct net_device *out_dev,
2326                                   char buf[], int encap_size,
2327                                   unsigned char h_dest[ETH_ALEN],
2328                                   u8 tos, u8 ttl,
2329                                   __be32 daddr,
2330                                   __be32 saddr,
2331                                   __be16 udp_dst_port,
2332                                   __be32 vx_vni)
2333 {
2334         struct ethhdr *eth = (struct ethhdr *)buf;
2335         struct iphdr  *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
2336         struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
2337         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
2338
2339         memset(buf, 0, encap_size);
2340
2341         ether_addr_copy(eth->h_dest, h_dest);
2342         ether_addr_copy(eth->h_source, out_dev->dev_addr);
2343         eth->h_proto = htons(ETH_P_IP);
2344
2345         ip->daddr = daddr;
2346         ip->saddr = saddr;
2347
2348         ip->tos = tos;
2349         ip->ttl = ttl;
2350         ip->protocol = IPPROTO_UDP;
2351         ip->version = 0x4;
2352         ip->ihl = 0x5;
2353
2354         udp->dest = udp_dst_port;
2355         vxh->vx_flags = VXLAN_HF_VNI;
2356         vxh->vx_vni = vxlan_vni_field(vx_vni);
2357 }
2358
2359 static void gen_vxlan_header_ipv6(struct net_device *out_dev,
2360                                   char buf[], int encap_size,
2361                                   unsigned char h_dest[ETH_ALEN],
2362                                   u8 tos, u8 ttl,
2363                                   struct in6_addr *daddr,
2364                                   struct in6_addr *saddr,
2365                                   __be16 udp_dst_port,
2366                                   __be32 vx_vni)
2367 {
2368         struct ethhdr *eth = (struct ethhdr *)buf;
2369         struct ipv6hdr *ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr));
2370         struct udphdr *udp = (struct udphdr *)((char *)ip6h + sizeof(struct ipv6hdr));
2371         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
2372
2373         memset(buf, 0, encap_size);
2374
2375         ether_addr_copy(eth->h_dest, h_dest);
2376         ether_addr_copy(eth->h_source, out_dev->dev_addr);
2377         eth->h_proto = htons(ETH_P_IPV6);
2378
2379         ip6_flow_hdr(ip6h, tos, 0);
2380         /* the HW fills up ipv6 payload len */
2381         ip6h->nexthdr     = IPPROTO_UDP;
2382         ip6h->hop_limit   = ttl;
2383         ip6h->daddr       = *daddr;
2384         ip6h->saddr       = *saddr;
2385
2386         udp->dest = udp_dst_port;
2387         vxh->vx_flags = VXLAN_HF_VNI;
2388         vxh->vx_vni = vxlan_vni_field(vx_vni);
2389 }
2390
2391 static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
2392                                           struct net_device *mirred_dev,
2393                                           struct mlx5e_encap_entry *e)
2394 {
2395         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
2396         int ipv4_encap_size = ETH_HLEN + sizeof(struct iphdr) + VXLAN_HLEN;
2397         struct ip_tunnel_key *tun_key = &e->tun_info.key;
2398         struct net_device *out_dev;
2399         struct neighbour *n = NULL;
2400         struct flowi4 fl4 = {};
2401         u8 nud_state, tos, ttl;
2402         char *encap_header;
2403         int err;
2404
2405         if (max_encap_size < ipv4_encap_size) {
2406                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
2407                                ipv4_encap_size, max_encap_size);
2408                 return -EOPNOTSUPP;
2409         }
2410
2411         encap_header = kzalloc(ipv4_encap_size, GFP_KERNEL);
2412         if (!encap_header)
2413                 return -ENOMEM;
2414
2415         switch (e->tunnel_type) {
2416         case MLX5_REFORMAT_TYPE_L2_TO_VXLAN:
2417                 fl4.flowi4_proto = IPPROTO_UDP;
2418                 fl4.fl4_dport = tun_key->tp_dst;
2419                 break;
2420         default:
2421                 err = -EOPNOTSUPP;
2422                 goto free_encap;
2423         }
2424
2425         tos = tun_key->tos;
2426         ttl = tun_key->ttl;
2427
2428         fl4.flowi4_tos = tun_key->tos;
2429         fl4.daddr = tun_key->u.ipv4.dst;
2430         fl4.saddr = tun_key->u.ipv4.src;
2431
2432         err = mlx5e_route_lookup_ipv4(priv, mirred_dev, &out_dev,
2433                                       &fl4, &n, &ttl);
2434         if (err)
2435                 goto free_encap;
2436
2437         /* used by mlx5e_detach_encap to lookup a neigh hash table
2438          * entry in the neigh hash table when a user deletes a rule
2439          */
2440         e->m_neigh.dev = n->dev;
2441         e->m_neigh.family = n->ops->family;
2442         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
2443         e->out_dev = out_dev;
2444
2445         /* It's importent to add the neigh to the hash table before checking
2446          * the neigh validity state. So if we'll get a notification, in case the
2447          * neigh changes it's validity state, we would find the relevant neigh
2448          * in the hash.
2449          */
2450         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
2451         if (err)
2452                 goto free_encap;
2453
2454         read_lock_bh(&n->lock);
2455         nud_state = n->nud_state;
2456         ether_addr_copy(e->h_dest, n->ha);
2457         read_unlock_bh(&n->lock);
2458
2459         switch (e->tunnel_type) {
2460         case MLX5_REFORMAT_TYPE_L2_TO_VXLAN:
2461                 gen_vxlan_header_ipv4(out_dev, encap_header,
2462                                       ipv4_encap_size, e->h_dest, tos, ttl,
2463                                       fl4.daddr,
2464                                       fl4.saddr, tun_key->tp_dst,
2465                                       tunnel_id_to_key32(tun_key->tun_id));
2466                 break;
2467         default:
2468                 err = -EOPNOTSUPP;
2469                 goto destroy_neigh_entry;
2470         }
2471         e->encap_size = ipv4_encap_size;
2472         e->encap_header = encap_header;
2473
2474         if (!(nud_state & NUD_VALID)) {
2475                 neigh_event_send(n, NULL);
2476                 err = -EAGAIN;
2477                 goto out;
2478         }
2479
2480         err = mlx5_packet_reformat_alloc(priv->mdev, e->tunnel_type,
2481                                          ipv4_encap_size, encap_header,
2482                                          MLX5_FLOW_NAMESPACE_FDB,
2483                                          &e->encap_id);
2484         if (err)
2485                 goto destroy_neigh_entry;
2486
2487         e->flags |= MLX5_ENCAP_ENTRY_VALID;
2488         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
2489         neigh_release(n);
2490         return err;
2491
2492 destroy_neigh_entry:
2493         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
2494 free_encap:
2495         kfree(encap_header);
2496 out:
2497         if (n)
2498                 neigh_release(n);
2499         return err;
2500 }
2501
2502 static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
2503                                           struct net_device *mirred_dev,
2504                                           struct mlx5e_encap_entry *e)
2505 {
2506         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
2507         int ipv6_encap_size = ETH_HLEN + sizeof(struct ipv6hdr) + VXLAN_HLEN;
2508         struct ip_tunnel_key *tun_key = &e->tun_info.key;
2509         struct net_device *out_dev;
2510         struct neighbour *n = NULL;
2511         struct flowi6 fl6 = {};
2512         u8 nud_state, tos, ttl;
2513         char *encap_header;
2514         int err;
2515
2516         if (max_encap_size < ipv6_encap_size) {
2517                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
2518                                ipv6_encap_size, max_encap_size);
2519                 return -EOPNOTSUPP;
2520         }
2521
2522         encap_header = kzalloc(ipv6_encap_size, GFP_KERNEL);
2523         if (!encap_header)
2524                 return -ENOMEM;
2525
2526         switch (e->tunnel_type) {
2527         case MLX5_REFORMAT_TYPE_L2_TO_VXLAN:
2528                 fl6.flowi6_proto = IPPROTO_UDP;
2529                 fl6.fl6_dport = tun_key->tp_dst;
2530                 break;
2531         default:
2532                 err = -EOPNOTSUPP;
2533                 goto free_encap;
2534         }
2535
2536         tos = tun_key->tos;
2537         ttl = tun_key->ttl;
2538
2539         fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label);
2540         fl6.daddr = tun_key->u.ipv6.dst;
2541         fl6.saddr = tun_key->u.ipv6.src;
2542
2543         err = mlx5e_route_lookup_ipv6(priv, mirred_dev, &out_dev,
2544                                       &fl6, &n, &ttl);
2545         if (err)
2546                 goto free_encap;
2547
2548         /* used by mlx5e_detach_encap to lookup a neigh hash table
2549          * entry in the neigh hash table when a user deletes a rule
2550          */
2551         e->m_neigh.dev = n->dev;
2552         e->m_neigh.family = n->ops->family;
2553         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
2554         e->out_dev = out_dev;
2555
2556         /* It's importent to add the neigh to the hash table before checking
2557          * the neigh validity state. So if we'll get a notification, in case the
2558          * neigh changes it's validity state, we would find the relevant neigh
2559          * in the hash.
2560          */
2561         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
2562         if (err)
2563                 goto free_encap;
2564
2565         read_lock_bh(&n->lock);
2566         nud_state = n->nud_state;
2567         ether_addr_copy(e->h_dest, n->ha);
2568         read_unlock_bh(&n->lock);
2569
2570         switch (e->tunnel_type) {
2571         case MLX5_REFORMAT_TYPE_L2_TO_VXLAN:
2572                 gen_vxlan_header_ipv6(out_dev, encap_header,
2573                                       ipv6_encap_size, e->h_dest, tos, ttl,
2574                                       &fl6.daddr,
2575                                       &fl6.saddr, tun_key->tp_dst,
2576                                       tunnel_id_to_key32(tun_key->tun_id));
2577                 break;
2578         default:
2579                 err = -EOPNOTSUPP;
2580                 goto destroy_neigh_entry;
2581         }
2582
2583         e->encap_size = ipv6_encap_size;
2584         e->encap_header = encap_header;
2585
2586         if (!(nud_state & NUD_VALID)) {
2587                 neigh_event_send(n, NULL);
2588                 err = -EAGAIN;
2589                 goto out;
2590         }
2591
2592         err = mlx5_packet_reformat_alloc(priv->mdev, e->tunnel_type,
2593                                          ipv6_encap_size, encap_header,
2594                                          MLX5_FLOW_NAMESPACE_FDB,
2595                                          &e->encap_id);
2596         if (err)
2597                 goto destroy_neigh_entry;
2598
2599         e->flags |= MLX5_ENCAP_ENTRY_VALID;
2600         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
2601         neigh_release(n);
2602         return err;
2603
2604 destroy_neigh_entry:
2605         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
2606 free_encap:
2607         kfree(encap_header);
2608 out:
2609         if (n)
2610                 neigh_release(n);
2611         return err;
2612 }
2613
2614 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
2615                               struct ip_tunnel_info *tun_info,
2616                               struct net_device *mirred_dev,
2617                               struct net_device **encap_dev,
2618                               struct mlx5e_tc_flow *flow,
2619                               struct netlink_ext_ack *extack)
2620 {
2621         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2622         unsigned short family = ip_tunnel_info_af(tun_info);
2623         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
2624         struct ip_tunnel_key *key = &tun_info->key;
2625         struct mlx5e_encap_entry *e;
2626         int tunnel_type, err = 0;
2627         uintptr_t hash_key;
2628         bool found = false;
2629
2630         /* udp dst port must be set */
2631         if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
2632                 goto vxlan_encap_offload_err;
2633
2634         /* setting udp src port isn't supported */
2635         if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
2636 vxlan_encap_offload_err:
2637                 NL_SET_ERR_MSG_MOD(extack,
2638                                    "must set udp dst port and not set udp src port");
2639                 netdev_warn(priv->netdev,
2640                             "must set udp dst port and not set udp src port\n");
2641                 return -EOPNOTSUPP;
2642         }
2643
2644         if (mlx5_vxlan_lookup_port(priv->mdev->vxlan, be16_to_cpu(key->tp_dst)) &&
2645             MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
2646                 tunnel_type = MLX5_REFORMAT_TYPE_L2_TO_VXLAN;
2647         } else {
2648                 NL_SET_ERR_MSG_MOD(extack,
2649                                    "port isn't an offloaded vxlan udp dport");
2650                 netdev_warn(priv->netdev,
2651                             "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
2652                 return -EOPNOTSUPP;
2653         }
2654
2655         hash_key = hash_encap_info(key);
2656
2657         hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
2658                                    encap_hlist, hash_key) {
2659                 if (!cmp_encap_info(&e->tun_info.key, key)) {
2660                         found = true;
2661                         break;
2662                 }
2663         }
2664
2665         /* must verify if encap is valid or not */
2666         if (found)
2667                 goto attach_flow;
2668
2669         e = kzalloc(sizeof(*e), GFP_KERNEL);
2670         if (!e)
2671                 return -ENOMEM;
2672
2673         e->tun_info = *tun_info;
2674         e->tunnel_type = tunnel_type;
2675         INIT_LIST_HEAD(&e->flows);
2676
2677         if (family == AF_INET)
2678                 err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e);
2679         else if (family == AF_INET6)
2680                 err = mlx5e_create_encap_header_ipv6(priv, mirred_dev, e);
2681
2682         if (err && err != -EAGAIN)
2683                 goto out_err;
2684
2685         hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
2686
2687 attach_flow:
2688         list_add(&flow->encap, &e->flows);
2689         *encap_dev = e->out_dev;
2690         if (e->flags & MLX5_ENCAP_ENTRY_VALID)
2691                 attr->encap_id = e->encap_id;
2692         else
2693                 err = -EAGAIN;
2694
2695         return err;
2696
2697 out_err:
2698         kfree(e);
2699         return err;
2700 }
2701
2702 static int parse_tc_vlan_action(struct mlx5e_priv *priv,
2703                                 const struct tc_action *a,
2704                                 struct mlx5_esw_flow_attr *attr,
2705                                 u32 *action)
2706 {
2707         u8 vlan_idx = attr->total_vlan;
2708
2709         if (vlan_idx >= MLX5_FS_VLAN_DEPTH)
2710                 return -EOPNOTSUPP;
2711
2712         if (tcf_vlan_action(a) == TCA_VLAN_ACT_POP) {
2713                 if (vlan_idx) {
2714                         if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
2715                                                                  MLX5_FS_VLAN_DEPTH))
2716                                 return -EOPNOTSUPP;
2717
2718                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP_2;
2719                 } else {
2720                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
2721                 }
2722         } else if (tcf_vlan_action(a) == TCA_VLAN_ACT_PUSH) {
2723                 attr->vlan_vid[vlan_idx] = tcf_vlan_push_vid(a);
2724                 attr->vlan_prio[vlan_idx] = tcf_vlan_push_prio(a);
2725                 attr->vlan_proto[vlan_idx] = tcf_vlan_push_proto(a);
2726                 if (!attr->vlan_proto[vlan_idx])
2727                         attr->vlan_proto[vlan_idx] = htons(ETH_P_8021Q);
2728
2729                 if (vlan_idx) {
2730                         if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
2731                                                                  MLX5_FS_VLAN_DEPTH))
2732                                 return -EOPNOTSUPP;
2733
2734                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH_2;
2735                 } else {
2736                         if (!mlx5_eswitch_vlan_actions_supported(priv->mdev, 1) &&
2737                             (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q) ||
2738                              tcf_vlan_push_prio(a)))
2739                                 return -EOPNOTSUPP;
2740
2741                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
2742                 }
2743         } else { /* action is TCA_VLAN_ACT_MODIFY */
2744                 return -EOPNOTSUPP;
2745         }
2746
2747         attr->total_vlan = vlan_idx + 1;
2748
2749         return 0;
2750 }
2751
2752 static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
2753                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
2754                                 struct mlx5e_tc_flow *flow,
2755                                 struct netlink_ext_ack *extack)
2756 {
2757         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
2758         struct mlx5e_rep_priv *rpriv = priv->ppriv;
2759         struct ip_tunnel_info *info = NULL;
2760         const struct tc_action *a;
2761         LIST_HEAD(actions);
2762         bool encap = false;
2763         u32 action = 0;
2764         int err, i;
2765
2766         if (!tcf_exts_has_actions(exts))
2767                 return -EINVAL;
2768
2769         attr->in_rep = rpriv->rep;
2770         attr->in_mdev = priv->mdev;
2771
2772         tcf_exts_for_each_action(i, a, exts) {
2773                 if (is_tcf_gact_shot(a)) {
2774                         action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
2775                                   MLX5_FLOW_CONTEXT_ACTION_COUNT;
2776                         continue;
2777                 }
2778
2779                 if (is_tcf_pedit(a)) {
2780                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_FDB,
2781                                                     parse_attr, extack);
2782                         if (err)
2783                                 return err;
2784
2785                         action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
2786                         attr->mirror_count = attr->out_count;
2787                         continue;
2788                 }
2789
2790                 if (is_tcf_csum(a)) {
2791                         if (csum_offload_supported(priv, action,
2792                                                    tcf_csum_update_flags(a),
2793                                                    extack))
2794                                 continue;
2795
2796                         return -EOPNOTSUPP;
2797                 }
2798
2799                 if (is_tcf_mirred_egress_redirect(a) || is_tcf_mirred_egress_mirror(a)) {
2800                         struct mlx5e_priv *out_priv;
2801                         struct net_device *out_dev;
2802
2803                         out_dev = tcf_mirred_dev(a);
2804
2805                         if (attr->out_count >= MLX5_MAX_FLOW_FWD_VPORTS) {
2806                                 NL_SET_ERR_MSG_MOD(extack,
2807                                                    "can't support more output ports, can't offload forwarding");
2808                                 pr_err("can't support more than %d output ports, can't offload forwarding\n",
2809                                        attr->out_count);
2810                                 return -EOPNOTSUPP;
2811                         }
2812
2813                         if (switchdev_port_same_parent_id(priv->netdev,
2814                                                           out_dev) ||
2815                             is_merged_eswitch_dev(priv, out_dev)) {
2816                                 action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2817                                           MLX5_FLOW_CONTEXT_ACTION_COUNT;
2818                                 out_priv = netdev_priv(out_dev);
2819                                 rpriv = out_priv->ppriv;
2820                                 attr->out_rep[attr->out_count] = rpriv->rep;
2821                                 attr->out_mdev[attr->out_count++] = out_priv->mdev;
2822                         } else if (encap) {
2823                                 parse_attr->mirred_ifindex = out_dev->ifindex;
2824                                 parse_attr->tun_info = *info;
2825                                 attr->parse_attr = parse_attr;
2826                                 action |= MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT |
2827                                           MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2828                                           MLX5_FLOW_CONTEXT_ACTION_COUNT;
2829                                 /* attr->out_rep is resolved when we handle encap */
2830                         } else {
2831                                 NL_SET_ERR_MSG_MOD(extack,
2832                                                    "devices are not on same switch HW, can't offload forwarding");
2833                                 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
2834                                        priv->netdev->name, out_dev->name);
2835                                 return -EINVAL;
2836                         }
2837                         continue;
2838                 }
2839
2840                 if (is_tcf_tunnel_set(a)) {
2841                         info = tcf_tunnel_info(a);
2842                         if (info)
2843                                 encap = true;
2844                         else
2845                                 return -EOPNOTSUPP;
2846                         attr->mirror_count = attr->out_count;
2847                         continue;
2848                 }
2849
2850                 if (is_tcf_vlan(a)) {
2851                         err = parse_tc_vlan_action(priv, a, attr, &action);
2852
2853                         if (err)
2854                                 return err;
2855
2856                         attr->mirror_count = attr->out_count;
2857                         continue;
2858                 }
2859
2860                 if (is_tcf_tunnel_release(a)) {
2861                         action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
2862                         continue;
2863                 }
2864
2865                 return -EINVAL;
2866         }
2867
2868         attr->action = action;
2869         if (!actions_match_supported(priv, exts, parse_attr, flow, extack))
2870                 return -EOPNOTSUPP;
2871
2872         if (attr->out_count > 1 && !mlx5_esw_has_fwd_fdb(priv->mdev)) {
2873                 NL_SET_ERR_MSG_MOD(extack,
2874                                    "current firmware doesn't support split rule for port mirroring");
2875                 netdev_warn_once(priv->netdev, "current firmware doesn't support split rule for port mirroring\n");
2876                 return -EOPNOTSUPP;
2877         }
2878
2879         return 0;
2880 }
2881
2882 static void get_flags(int flags, u8 *flow_flags)
2883 {
2884         u8 __flow_flags = 0;
2885
2886         if (flags & MLX5E_TC_INGRESS)
2887                 __flow_flags |= MLX5E_TC_FLOW_INGRESS;
2888         if (flags & MLX5E_TC_EGRESS)
2889                 __flow_flags |= MLX5E_TC_FLOW_EGRESS;
2890
2891         *flow_flags = __flow_flags;
2892 }
2893
2894 static const struct rhashtable_params tc_ht_params = {
2895         .head_offset = offsetof(struct mlx5e_tc_flow, node),
2896         .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
2897         .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
2898         .automatic_shrinking = true,
2899 };
2900
2901 static struct rhashtable *get_tc_ht(struct mlx5e_priv *priv)
2902 {
2903         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2904         struct mlx5e_rep_priv *uplink_rpriv;
2905
2906         if (MLX5_VPORT_MANAGER(priv->mdev) && esw->mode == SRIOV_OFFLOADS) {
2907                 uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
2908                 return &uplink_rpriv->tc_ht;
2909         } else
2910                 return &priv->fs.tc.ht;
2911 }
2912
2913 static int
2914 mlx5e_alloc_flow(struct mlx5e_priv *priv, int attr_size,
2915                  struct tc_cls_flower_offload *f, u8 flow_flags,
2916                  struct mlx5e_tc_flow_parse_attr **__parse_attr,
2917                  struct mlx5e_tc_flow **__flow)
2918 {
2919         struct mlx5e_tc_flow_parse_attr *parse_attr;
2920         struct mlx5e_tc_flow *flow;
2921         int err;
2922
2923         flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
2924         parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
2925         if (!parse_attr || !flow) {
2926                 err = -ENOMEM;
2927                 goto err_free;
2928         }
2929
2930         flow->cookie = f->cookie;
2931         flow->flags = flow_flags;
2932         flow->priv = priv;
2933
2934         err = parse_cls_flower(priv, flow, &parse_attr->spec, f);
2935         if (err)
2936                 goto err_free;
2937
2938         *__flow = flow;
2939         *__parse_attr = parse_attr;
2940
2941         return 0;
2942
2943 err_free:
2944         kfree(flow);
2945         kvfree(parse_attr);
2946         return err;
2947 }
2948
2949 static int
2950 mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
2951                    struct tc_cls_flower_offload *f,
2952                    u8 flow_flags,
2953                    struct mlx5e_tc_flow **__flow)
2954 {
2955         struct netlink_ext_ack *extack = f->common.extack;
2956         struct mlx5e_tc_flow_parse_attr *parse_attr;
2957         struct mlx5e_tc_flow *flow;
2958         int attr_size, err;
2959
2960         flow_flags |= MLX5E_TC_FLOW_ESWITCH;
2961         attr_size  = sizeof(struct mlx5_esw_flow_attr);
2962         err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
2963                                &parse_attr, &flow);
2964         if (err)
2965                 goto out;
2966
2967         err = parse_tc_fdb_actions(priv, f->exts, parse_attr, flow, extack);
2968         if (err)
2969                 goto err_free;
2970
2971         err = mlx5e_tc_add_fdb_flow(priv, parse_attr, flow, extack);
2972         if (err && err != -EAGAIN)
2973                 goto err_free;
2974
2975         if (!err)
2976                 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
2977
2978         if (!(flow->esw_attr->action &
2979               MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT))
2980                 kvfree(parse_attr);
2981
2982         *__flow = flow;
2983
2984         return 0;
2985
2986 err_free:
2987         kfree(flow);
2988         kvfree(parse_attr);
2989 out:
2990         return err;
2991 }
2992
2993 static int
2994 mlx5e_add_nic_flow(struct mlx5e_priv *priv,
2995                    struct tc_cls_flower_offload *f,
2996                    u8 flow_flags,
2997                    struct mlx5e_tc_flow **__flow)
2998 {
2999         struct netlink_ext_ack *extack = f->common.extack;
3000         struct mlx5e_tc_flow_parse_attr *parse_attr;
3001         struct mlx5e_tc_flow *flow;
3002         int attr_size, err;
3003
3004         flow_flags |= MLX5E_TC_FLOW_NIC;
3005         attr_size  = sizeof(struct mlx5_nic_flow_attr);
3006         err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
3007                                &parse_attr, &flow);
3008         if (err)
3009                 goto out;
3010
3011         err = parse_tc_nic_actions(priv, f->exts, parse_attr, flow, extack);
3012         if (err)
3013                 goto err_free;
3014
3015         err = mlx5e_tc_add_nic_flow(priv, parse_attr, flow, extack);
3016         if (err)
3017                 goto err_free;
3018
3019         flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
3020         kvfree(parse_attr);
3021         *__flow = flow;
3022
3023         return 0;
3024
3025 err_free:
3026         kfree(flow);
3027         kvfree(parse_attr);
3028 out:
3029         return err;
3030 }
3031
3032 static int
3033 mlx5e_tc_add_flow(struct mlx5e_priv *priv,
3034                   struct tc_cls_flower_offload *f,
3035                   int flags,
3036                   struct mlx5e_tc_flow **flow)
3037 {
3038         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3039         u8 flow_flags;
3040         int err;
3041
3042         get_flags(flags, &flow_flags);
3043
3044         if (esw && esw->mode == SRIOV_OFFLOADS)
3045                 err = mlx5e_add_fdb_flow(priv, f, flow_flags, flow);
3046         else
3047                 err = mlx5e_add_nic_flow(priv, f, flow_flags, flow);
3048
3049         return err;
3050 }
3051
3052 int mlx5e_configure_flower(struct mlx5e_priv *priv,
3053                            struct tc_cls_flower_offload *f, int flags)
3054 {
3055         struct netlink_ext_ack *extack = f->common.extack;
3056         struct rhashtable *tc_ht = get_tc_ht(priv);
3057         struct mlx5e_tc_flow *flow;
3058         int err = 0;
3059
3060         flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params);
3061         if (flow) {
3062                 NL_SET_ERR_MSG_MOD(extack,
3063                                    "flow cookie already exists, ignoring");
3064                 netdev_warn_once(priv->netdev,
3065                                  "flow cookie %lx already exists, ignoring\n",
3066                                  f->cookie);
3067                 goto out;
3068         }
3069
3070         err = mlx5e_tc_add_flow(priv, f, flags, &flow);
3071         if (err)
3072                 goto out;
3073
3074         err = rhashtable_insert_fast(tc_ht, &flow->node, tc_ht_params);
3075         if (err)
3076                 goto err_free;
3077
3078         return 0;
3079
3080 err_free:
3081         mlx5e_tc_del_flow(priv, flow);
3082         kfree(flow);
3083 out:
3084         return err;
3085 }
3086
3087 #define DIRECTION_MASK (MLX5E_TC_INGRESS | MLX5E_TC_EGRESS)
3088 #define FLOW_DIRECTION_MASK (MLX5E_TC_FLOW_INGRESS | MLX5E_TC_FLOW_EGRESS)
3089
3090 static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags)
3091 {
3092         if ((flow->flags & FLOW_DIRECTION_MASK) == (flags & DIRECTION_MASK))
3093                 return true;
3094
3095         return false;
3096 }
3097
3098 int mlx5e_delete_flower(struct mlx5e_priv *priv,
3099                         struct tc_cls_flower_offload *f, int flags)
3100 {
3101         struct rhashtable *tc_ht = get_tc_ht(priv);
3102         struct mlx5e_tc_flow *flow;
3103
3104         flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params);
3105         if (!flow || !same_flow_direction(flow, flags))
3106                 return -EINVAL;
3107
3108         rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params);
3109
3110         mlx5e_tc_del_flow(priv, flow);
3111
3112         kfree(flow);
3113
3114         return 0;
3115 }
3116
3117 int mlx5e_stats_flower(struct mlx5e_priv *priv,
3118                        struct tc_cls_flower_offload *f, int flags)
3119 {
3120         struct rhashtable *tc_ht = get_tc_ht(priv);
3121         struct mlx5e_tc_flow *flow;
3122         struct mlx5_fc *counter;
3123         u64 bytes;
3124         u64 packets;
3125         u64 lastuse;
3126
3127         flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params);
3128         if (!flow || !same_flow_direction(flow, flags))
3129                 return -EINVAL;
3130
3131         if (!(flow->flags & MLX5E_TC_FLOW_OFFLOADED))
3132                 return 0;
3133
3134         counter = mlx5e_tc_get_counter(flow);
3135         if (!counter)
3136                 return 0;
3137
3138         mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
3139
3140         tcf_exts_stats_update(f->exts, bytes, packets, lastuse);
3141
3142         return 0;
3143 }
3144
3145 static void mlx5e_tc_hairpin_update_dead_peer(struct mlx5e_priv *priv,
3146                                               struct mlx5e_priv *peer_priv)
3147 {
3148         struct mlx5_core_dev *peer_mdev = peer_priv->mdev;
3149         struct mlx5e_hairpin_entry *hpe;
3150         u16 peer_vhca_id;
3151         int bkt;
3152
3153         if (!same_hw_devs(priv, peer_priv))
3154                 return;
3155
3156         peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
3157
3158         hash_for_each(priv->fs.tc.hairpin_tbl, bkt, hpe, hairpin_hlist) {
3159                 if (hpe->peer_vhca_id == peer_vhca_id)
3160                         hpe->hp->pair->peer_gone = true;
3161         }
3162 }
3163
3164 static int mlx5e_tc_netdev_event(struct notifier_block *this,
3165                                  unsigned long event, void *ptr)
3166 {
3167         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
3168         struct mlx5e_flow_steering *fs;
3169         struct mlx5e_priv *peer_priv;
3170         struct mlx5e_tc_table *tc;
3171         struct mlx5e_priv *priv;
3172
3173         if (ndev->netdev_ops != &mlx5e_netdev_ops ||
3174             event != NETDEV_UNREGISTER ||
3175             ndev->reg_state == NETREG_REGISTERED)
3176                 return NOTIFY_DONE;
3177
3178         tc = container_of(this, struct mlx5e_tc_table, netdevice_nb);
3179         fs = container_of(tc, struct mlx5e_flow_steering, tc);
3180         priv = container_of(fs, struct mlx5e_priv, fs);
3181         peer_priv = netdev_priv(ndev);
3182         if (priv == peer_priv ||
3183             !(priv->netdev->features & NETIF_F_HW_TC))
3184                 return NOTIFY_DONE;
3185
3186         mlx5e_tc_hairpin_update_dead_peer(priv, peer_priv);
3187
3188         return NOTIFY_DONE;
3189 }
3190
3191 int mlx5e_tc_nic_init(struct mlx5e_priv *priv)
3192 {
3193         struct mlx5e_tc_table *tc = &priv->fs.tc;
3194         int err;
3195
3196         hash_init(tc->mod_hdr_tbl);
3197         hash_init(tc->hairpin_tbl);
3198
3199         err = rhashtable_init(&tc->ht, &tc_ht_params);
3200         if (err)
3201                 return err;
3202
3203         tc->netdevice_nb.notifier_call = mlx5e_tc_netdev_event;
3204         if (register_netdevice_notifier(&tc->netdevice_nb)) {
3205                 tc->netdevice_nb.notifier_call = NULL;
3206                 mlx5_core_warn(priv->mdev, "Failed to register netdev notifier\n");
3207         }
3208
3209         return err;
3210 }
3211
3212 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
3213 {
3214         struct mlx5e_tc_flow *flow = ptr;
3215         struct mlx5e_priv *priv = flow->priv;
3216
3217         mlx5e_tc_del_flow(priv, flow);
3218         kfree(flow);
3219 }
3220
3221 void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv)
3222 {
3223         struct mlx5e_tc_table *tc = &priv->fs.tc;
3224
3225         if (tc->netdevice_nb.notifier_call)
3226                 unregister_netdevice_notifier(&tc->netdevice_nb);
3227
3228         rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, NULL);
3229
3230         if (!IS_ERR_OR_NULL(tc->t)) {
3231                 mlx5_destroy_flow_table(tc->t);
3232                 tc->t = NULL;
3233         }
3234 }
3235
3236 int mlx5e_tc_esw_init(struct rhashtable *tc_ht)
3237 {
3238         return rhashtable_init(tc_ht, &tc_ht_params);
3239 }
3240
3241 void mlx5e_tc_esw_cleanup(struct rhashtable *tc_ht)
3242 {
3243         rhashtable_free_and_destroy(tc_ht, _mlx5e_tc_del_flow, NULL);
3244 }
3245
3246 int mlx5e_tc_num_filters(struct mlx5e_priv *priv)
3247 {
3248         struct rhashtable *tc_ht = get_tc_ht(priv);
3249
3250         return atomic_read(&tc_ht->nelems);
3251 }