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 };
  65
  66 #define MLX5E_TC_FLOW_BASE (MLX5E_TC_LAST_EXPORTED_BIT + 1)
  67
  68 enum {
  69         MLX5E_TC_FLOW_INGRESS   = MLX5E_TC_INGRESS,
  70         MLX5E_TC_FLOW_EGRESS    = MLX5E_TC_EGRESS,
  71         MLX5E_TC_FLOW_ESWITCH   = BIT(MLX5E_TC_FLOW_BASE),
  72         MLX5E_TC_FLOW_NIC       = BIT(MLX5E_TC_FLOW_BASE + 1),
  73         MLX5E_TC_FLOW_OFFLOADED = BIT(MLX5E_TC_FLOW_BASE + 2),
  74         MLX5E_TC_FLOW_HAIRPIN   = BIT(MLX5E_TC_FLOW_BASE + 3),
  75         MLX5E_TC_FLOW_HAIRPIN_RSS = BIT(MLX5E_TC_FLOW_BASE + 4),
  76 };
  77
  78 #define MLX5E_TC_MAX_SPLITS 1
  79
  80 struct mlx5e_tc_flow {
  81         struct rhash_head       node;
  82         struct mlx5e_priv       *priv;
  83         u64                     cookie;
  84         u8                      flags;
  85         struct mlx5_flow_handle *rule[MLX5E_TC_MAX_SPLITS + 1];
  86         struct list_head        encap;   /* flows sharing the same encap ID */
  87         struct list_head        mod_hdr; /* flows sharing the same mod hdr ID */
  88         struct list_head        hairpin; /* flows sharing the same hairpin */
  89         union {
  90                 struct mlx5_esw_flow_attr esw_attr[0];
  91                 struct mlx5_nic_flow_attr nic_attr[0];
  92         };
  93 };
  94
  95 struct mlx5e_tc_flow_parse_attr {
  96         struct ip_tunnel_info tun_info;
  97         struct mlx5_flow_spec spec;
  98         int num_mod_hdr_actions;
  99         void *mod_hdr_actions;
 100         int mirred_ifindex;
 101 };
 102
 103 #define MLX5E_TC_TABLE_NUM_GROUPS 4
 104 #define MLX5E_TC_TABLE_MAX_GROUP_SIZE BIT(16)
 105
 106 struct mlx5e_hairpin {
 107         struct mlx5_hairpin *pair;
 108
 109         struct mlx5_core_dev *func_mdev;
 110         struct mlx5e_priv *func_priv;
 111         u32 tdn;
 112         u32 tirn;
 113
 114         int num_channels;
 115         struct mlx5e_rqt indir_rqt;
 116         u32 indir_tirn[MLX5E_NUM_INDIR_TIRS];
 117         struct mlx5e_ttc_table ttc;
 118 };
 119
 120 struct mlx5e_hairpin_entry {
 121         /* a node of a hash table which keeps all the  hairpin entries */
 122         struct hlist_node hairpin_hlist;
 123
 124         /* flows sharing the same hairpin */
 125         struct list_head flows;
 126
 127         u16 peer_vhca_id;
 128         u8 prio;
 129         struct mlx5e_hairpin *hp;
 130 };
 131
 132 struct mod_hdr_key {
 133         int num_actions;
 134         void *actions;
 135 };
 136
 137 struct mlx5e_mod_hdr_entry {
 138         /* a node of a hash table which keeps all the mod_hdr entries */
 139         struct hlist_node mod_hdr_hlist;
 140
 141         /* flows sharing the same mod_hdr entry */
 142         struct list_head flows;
 143
 144         struct mod_hdr_key key;
 145
 146         u32 mod_hdr_id;
 147 };
 148
 149 #define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto)
 150
 151 static inline u32 hash_mod_hdr_info(struct mod_hdr_key *key)
 152 {
 153         return jhash(key->actions,
 154                      key->num_actions * MLX5_MH_ACT_SZ, 0);
 155 }
 156
 157 static inline int cmp_mod_hdr_info(struct mod_hdr_key *a,
 158                                    struct mod_hdr_key *b)
 159 {
 160         if (a->num_actions != b->num_actions)
 161                 return 1;
 162
 163         return memcmp(a->actions, b->actions, a->num_actions * MLX5_MH_ACT_SZ);
 164 }
 165
 166 static int mlx5e_attach_mod_hdr(struct mlx5e_priv *priv,
 167                                 struct mlx5e_tc_flow *flow,
 168                                 struct mlx5e_tc_flow_parse_attr *parse_attr)
 169 {
 170         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 171         int num_actions, actions_size, namespace, err;
 172         struct mlx5e_mod_hdr_entry *mh;
 173         struct mod_hdr_key key;
 174         bool found = false;
 175         u32 hash_key;
 176
 177         num_actions  = parse_attr->num_mod_hdr_actions;
 178         actions_size = MLX5_MH_ACT_SZ * num_actions;
 179
 180         key.actions = parse_attr->mod_hdr_actions;
 181         key.num_actions = num_actions;
 182
 183         hash_key = hash_mod_hdr_info(&key);
 184
 185         if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
 186                 namespace = MLX5_FLOW_NAMESPACE_FDB;
 187                 hash_for_each_possible(esw->offloads.mod_hdr_tbl, mh,
 188                                        mod_hdr_hlist, hash_key) {
 189                         if (!cmp_mod_hdr_info(&mh->key, &key)) {
 190                                 found = true;
 191                                 break;
 192                         }
 193                 }
 194         } else {
 195                 namespace = MLX5_FLOW_NAMESPACE_KERNEL;
 196                 hash_for_each_possible(priv->fs.tc.mod_hdr_tbl, mh,
 197                                        mod_hdr_hlist, hash_key) {
 198                         if (!cmp_mod_hdr_info(&mh->key, &key)) {
 199                                 found = true;
 200                                 break;
 201                         }
 202                 }
 203         }
 204
 205         if (found)
 206                 goto attach_flow;
 207
 208         mh = kzalloc(sizeof(*mh) + actions_size, GFP_KERNEL);
 209         if (!mh)
 210                 return -ENOMEM;
 211
 212         mh->key.actions = (void *)mh + sizeof(*mh);
 213         memcpy(mh->key.actions, key.actions, actions_size);
 214         mh->key.num_actions = num_actions;
 215         INIT_LIST_HEAD(&mh->flows);
 216
 217         err = mlx5_modify_header_alloc(priv->mdev, namespace,
 218                                        mh->key.num_actions,
 219                                        mh->key.actions,
 220                                        &mh->mod_hdr_id);
 221         if (err)
 222                 goto out_err;
 223
 224         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
 225                 hash_add(esw->offloads.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key);
 226         else
 227                 hash_add(priv->fs.tc.mod_hdr_tbl, &mh->mod_hdr_hlist, hash_key);
 228
 229 attach_flow:
 230         list_add(&flow->mod_hdr, &mh->flows);
 231         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
 232                 flow->esw_attr->mod_hdr_id = mh->mod_hdr_id;
 233         else
 234                 flow->nic_attr->mod_hdr_id = mh->mod_hdr_id;
 235
 236         return 0;
 237
 238 out_err:
 239         kfree(mh);
 240         return err;
 241 }
 242
 243 static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv,
 244                                  struct mlx5e_tc_flow *flow)
 245 {
 246         struct list_head *next = flow->mod_hdr.next;
 247
 248         list_del(&flow->mod_hdr);
 249
 250         if (list_empty(next)) {
 251                 struct mlx5e_mod_hdr_entry *mh;
 252
 253                 mh = list_entry(next, struct mlx5e_mod_hdr_entry, flows);
 254
 255                 mlx5_modify_header_dealloc(priv->mdev, mh->mod_hdr_id);
 256                 hash_del(&mh->mod_hdr_hlist);
 257                 kfree(mh);
 258         }
 259 }
 260
 261 static
 262 struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex)
 263 {
 264         struct net_device *netdev;
 265         struct mlx5e_priv *priv;
 266
 267         netdev = __dev_get_by_index(net, ifindex);
 268         priv = netdev_priv(netdev);
 269         return priv->mdev;
 270 }
 271
 272 static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp)
 273 {
 274         u32 in[MLX5_ST_SZ_DW(create_tir_in)] = {0};
 275         void *tirc;
 276         int err;
 277
 278         err = mlx5_core_alloc_transport_domain(hp->func_mdev, &hp->tdn);
 279         if (err)
 280                 goto alloc_tdn_err;
 281
 282         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
 283
 284         MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
 285         MLX5_SET(tirc, tirc, inline_rqn, hp->pair->rqn[0]);
 286         MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
 287
 288         err = mlx5_core_create_tir(hp->func_mdev, in, MLX5_ST_SZ_BYTES(create_tir_in), &hp->tirn);
 289         if (err)
 290                 goto create_tir_err;
 291
 292         return 0;
 293
 294 create_tir_err:
 295         mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
 296 alloc_tdn_err:
 297         return err;
 298 }
 299
 300 static void mlx5e_hairpin_destroy_transport(struct mlx5e_hairpin *hp)
 301 {
 302         mlx5_core_destroy_tir(hp->func_mdev, hp->tirn);
 303         mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
 304 }
 305
 306 static void mlx5e_hairpin_fill_rqt_rqns(struct mlx5e_hairpin *hp, void *rqtc)
 307 {
 308         u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE], rqn;
 309         struct mlx5e_priv *priv = hp->func_priv;
 310         int i, ix, sz = MLX5E_INDIR_RQT_SIZE;
 311
 312         mlx5e_build_default_indir_rqt(indirection_rqt, sz,
 313                                       hp->num_channels);
 314
 315         for (i = 0; i < sz; i++) {
 316                 ix = i;
 317                 if (priv->channels.params.rss_hfunc == ETH_RSS_HASH_XOR)
 318                         ix = mlx5e_bits_invert(i, ilog2(sz));
 319                 ix = indirection_rqt[ix];
 320                 rqn = hp->pair->rqn[ix];
 321                 MLX5_SET(rqtc, rqtc, rq_num[i], rqn);
 322         }
 323 }
 324
 325 static int mlx5e_hairpin_create_indirect_rqt(struct mlx5e_hairpin *hp)
 326 {
 327         int inlen, err, sz = MLX5E_INDIR_RQT_SIZE;
 328         struct mlx5e_priv *priv = hp->func_priv;
 329         struct mlx5_core_dev *mdev = priv->mdev;
 330         void *rqtc;
 331         u32 *in;
 332
 333         inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
 334         in = kvzalloc(inlen, GFP_KERNEL);
 335         if (!in)
 336                 return -ENOMEM;
 337
 338         rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
 339
 340         MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
 341         MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
 342
 343         mlx5e_hairpin_fill_rqt_rqns(hp, rqtc);
 344
 345         err = mlx5_core_create_rqt(mdev, in, inlen, &hp->indir_rqt.rqtn);
 346         if (!err)
 347                 hp->indir_rqt.enabled = true;
 348
 349         kvfree(in);
 350         return err;
 351 }
 352
 353 static int mlx5e_hairpin_create_indirect_tirs(struct mlx5e_hairpin *hp)
 354 {
 355         struct mlx5e_priv *priv = hp->func_priv;
 356         u32 in[MLX5_ST_SZ_DW(create_tir_in)];
 357         int tt, i, err;
 358         void *tirc;
 359
 360         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
 361                 memset(in, 0, MLX5_ST_SZ_BYTES(create_tir_in));
 362                 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
 363
 364                 MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
 365                 MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_INDIRECT);
 366                 MLX5_SET(tirc, tirc, indirect_table, hp->indir_rqt.rqtn);
 367                 mlx5e_build_indir_tir_ctx_hash(&priv->channels.params, tt, tirc, false);
 368
 369                 err = mlx5_core_create_tir(hp->func_mdev, in,
 370                                            MLX5_ST_SZ_BYTES(create_tir_in), &hp->indir_tirn[tt]);
 371                 if (err) {
 372                         mlx5_core_warn(hp->func_mdev, "create indirect tirs failed, %d\n", err);
 373                         goto err_destroy_tirs;
 374                 }
 375         }
 376         return 0;
 377
 378 err_destroy_tirs:
 379         for (i = 0; i < tt; i++)
 380                 mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[i]);
 381         return err;
 382 }
 383
 384 static void mlx5e_hairpin_destroy_indirect_tirs(struct mlx5e_hairpin *hp)
 385 {
 386         int tt;
 387
 388         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
 389                 mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[tt]);
 390 }
 391
 392 static void mlx5e_hairpin_set_ttc_params(struct mlx5e_hairpin *hp,
 393                                          struct ttc_params *ttc_params)
 394 {
 395         struct mlx5_flow_table_attr *ft_attr = &ttc_params->ft_attr;
 396         int tt;
 397
 398         memset(ttc_params, 0, sizeof(*ttc_params));
 399
 400         ttc_params->any_tt_tirn = hp->tirn;
 401
 402         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
 403                 ttc_params->indir_tirn[tt] = hp->indir_tirn[tt];
 404
 405         ft_attr->max_fte = MLX5E_NUM_TT;
 406         ft_attr->level = MLX5E_TC_TTC_FT_LEVEL;
 407         ft_attr->prio = MLX5E_TC_PRIO;
 408 }
 409
 410 static int mlx5e_hairpin_rss_init(struct mlx5e_hairpin *hp)
 411 {
 412         struct mlx5e_priv *priv = hp->func_priv;
 413         struct ttc_params ttc_params;
 414         int err;
 415
 416         err = mlx5e_hairpin_create_indirect_rqt(hp);
 417         if (err)
 418                 return err;
 419
 420         err = mlx5e_hairpin_create_indirect_tirs(hp);
 421         if (err)
 422                 goto err_create_indirect_tirs;
 423
 424         mlx5e_hairpin_set_ttc_params(hp, &ttc_params);
 425         err = mlx5e_create_ttc_table(priv, &ttc_params, &hp->ttc);
 426         if (err)
 427                 goto err_create_ttc_table;
 428
 429         netdev_dbg(priv->netdev, "add hairpin: using %d channels rss ttc table id %x\n",
 430                    hp->num_channels, hp->ttc.ft.t->id);
 431
 432         return 0;
 433
 434 err_create_ttc_table:
 435         mlx5e_hairpin_destroy_indirect_tirs(hp);
 436 err_create_indirect_tirs:
 437         mlx5e_destroy_rqt(priv, &hp->indir_rqt);
 438
 439         return err;
 440 }
 441
 442 static void mlx5e_hairpin_rss_cleanup(struct mlx5e_hairpin *hp)
 443 {
 444         struct mlx5e_priv *priv = hp->func_priv;
 445
 446         mlx5e_destroy_ttc_table(priv, &hp->ttc);
 447         mlx5e_hairpin_destroy_indirect_tirs(hp);
 448         mlx5e_destroy_rqt(priv, &hp->indir_rqt);
 449 }
 450
 451 static struct mlx5e_hairpin *
 452 mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params,
 453                      int peer_ifindex)
 454 {
 455         struct mlx5_core_dev *func_mdev, *peer_mdev;
 456         struct mlx5e_hairpin *hp;
 457         struct mlx5_hairpin *pair;
 458         int err;
 459
 460         hp = kzalloc(sizeof(*hp), GFP_KERNEL);
 461         if (!hp)
 462                 return ERR_PTR(-ENOMEM);
 463
 464         func_mdev = priv->mdev;
 465         peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
 466
 467         pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params);
 468         if (IS_ERR(pair)) {
 469                 err = PTR_ERR(pair);
 470                 goto create_pair_err;
 471         }
 472         hp->pair = pair;
 473         hp->func_mdev = func_mdev;
 474         hp->func_priv = priv;
 475         hp->num_channels = params->num_channels;
 476
 477         err = mlx5e_hairpin_create_transport(hp);
 478         if (err)
 479                 goto create_transport_err;
 480
 481         if (hp->num_channels > 1) {
 482                 err = mlx5e_hairpin_rss_init(hp);
 483                 if (err)
 484                         goto rss_init_err;
 485         }
 486
 487         return hp;
 488
 489 rss_init_err:
 490         mlx5e_hairpin_destroy_transport(hp);
 491 create_transport_err:
 492         mlx5_core_hairpin_destroy(hp->pair);
 493 create_pair_err:
 494         kfree(hp);
 495         return ERR_PTR(err);
 496 }
 497
 498 static void mlx5e_hairpin_destroy(struct mlx5e_hairpin *hp)
 499 {
 500         if (hp->num_channels > 1)
 501                 mlx5e_hairpin_rss_cleanup(hp);
 502         mlx5e_hairpin_destroy_transport(hp);
 503         mlx5_core_hairpin_destroy(hp->pair);
 504         kvfree(hp);
 505 }
 506
 507 static inline u32 hash_hairpin_info(u16 peer_vhca_id, u8 prio)
 508 {
 509         return (peer_vhca_id << 16 | prio);
 510 }
 511
 512 static struct mlx5e_hairpin_entry *mlx5e_hairpin_get(struct mlx5e_priv *priv,
 513                                                      u16 peer_vhca_id, u8 prio)
 514 {
 515         struct mlx5e_hairpin_entry *hpe;
 516         u32 hash_key = hash_hairpin_info(peer_vhca_id, prio);
 517
 518         hash_for_each_possible(priv->fs.tc.hairpin_tbl, hpe,
 519                                hairpin_hlist, hash_key) {
 520                 if (hpe->peer_vhca_id == peer_vhca_id && hpe->prio == prio)
 521                         return hpe;
 522         }
 523
 524         return NULL;
 525 }
 526
 527 #define UNKNOWN_MATCH_PRIO 8
 528
 529 static int mlx5e_hairpin_get_prio(struct mlx5e_priv *priv,
 530                                   struct mlx5_flow_spec *spec, u8 *match_prio,
 531                                   struct netlink_ext_ack *extack)
 532 {
 533         void *headers_c, *headers_v;
 534         u8 prio_val, prio_mask = 0;
 535         bool vlan_present;
 536
 537 #ifdef CONFIG_MLX5_CORE_EN_DCB
 538         if (priv->dcbx_dp.trust_state != MLX5_QPTS_TRUST_PCP) {
 539                 NL_SET_ERR_MSG_MOD(extack,
 540                                    "only PCP trust state supported for hairpin");
 541                 return -EOPNOTSUPP;
 542         }
 543 #endif
 544         headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers);
 545         headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
 546
 547         vlan_present = MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag);
 548         if (vlan_present) {
 549                 prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
 550                 prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
 551         }
 552
 553         if (!vlan_present || !prio_mask) {
 554                 prio_val = UNKNOWN_MATCH_PRIO;
 555         } else if (prio_mask != 0x7) {
 556                 NL_SET_ERR_MSG_MOD(extack,
 557                                    "masked priority match not supported for hairpin");
 558                 return -EOPNOTSUPP;
 559         }
 560
 561         *match_prio = prio_val;
 562         return 0;
 563 }
 564
 565 static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv,
 566                                   struct mlx5e_tc_flow *flow,
 567                                   struct mlx5e_tc_flow_parse_attr *parse_attr,
 568                                   struct netlink_ext_ack *extack)
 569 {
 570         int peer_ifindex = parse_attr->mirred_ifindex;
 571         struct mlx5_hairpin_params params;
 572         struct mlx5_core_dev *peer_mdev;
 573         struct mlx5e_hairpin_entry *hpe;
 574         struct mlx5e_hairpin *hp;
 575         u64 link_speed64;
 576         u32 link_speed;
 577         u8 match_prio;
 578         u16 peer_id;
 579         int err;
 580
 581         peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
 582         if (!MLX5_CAP_GEN(priv->mdev, hairpin) || !MLX5_CAP_GEN(peer_mdev, hairpin)) {
 583                 NL_SET_ERR_MSG_MOD(extack, "hairpin is not supported");
 584                 return -EOPNOTSUPP;
 585         }
 586
 587         peer_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
 588         err = mlx5e_hairpin_get_prio(priv, &parse_attr->spec, &match_prio,
 589                                      extack);
 590         if (err)
 591                 return err;
 592         hpe = mlx5e_hairpin_get(priv, peer_id, match_prio);
 593         if (hpe)
 594                 goto attach_flow;
 595
 596         hpe = kzalloc(sizeof(*hpe), GFP_KERNEL);
 597         if (!hpe)
 598                 return -ENOMEM;
 599
 600         INIT_LIST_HEAD(&hpe->flows);
 601         hpe->peer_vhca_id = peer_id;
 602         hpe->prio = match_prio;
 603
 604         params.log_data_size = 15;
 605         params.log_data_size = min_t(u8, params.log_data_size,
 606                                      MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz));
 607         params.log_data_size = max_t(u8, params.log_data_size,
 608                                      MLX5_CAP_GEN(priv->mdev, log_min_hairpin_wq_data_sz));
 609
 610         params.log_num_packets = params.log_data_size -
 611                                  MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(priv->mdev);
 612         params.log_num_packets = min_t(u8, params.log_num_packets,
 613                                        MLX5_CAP_GEN(priv->mdev, log_max_hairpin_num_packets));
 614
 615         params.q_counter = priv->q_counter;
 616         /* set hairpin pair per each 50Gbs share of the link */
 617         mlx5e_port_max_linkspeed(priv->mdev, &link_speed);
 618         link_speed = max_t(u32, link_speed, 50000);
 619         link_speed64 = link_speed;
 620         do_div(link_speed64, 50000);
 621         params.num_channels = link_speed64;
 622
 623         hp = mlx5e_hairpin_create(priv, &params, peer_ifindex);
 624         if (IS_ERR(hp)) {
 625                 err = PTR_ERR(hp);
 626                 goto create_hairpin_err;
 627         }
 628
 629         netdev_dbg(priv->netdev, "add hairpin: tirn %x rqn %x peer %s sqn %x prio %d (log) data %d packets %d\n",
 630                    hp->tirn, hp->pair->rqn[0], hp->pair->peer_mdev->priv.name,
 631                    hp->pair->sqn[0], match_prio, params.log_data_size, params.log_num_packets);
 632
 633         hpe->hp = hp;
 634         hash_add(priv->fs.tc.hairpin_tbl, &hpe->hairpin_hlist,
 635                  hash_hairpin_info(peer_id, match_prio));
 636
 637 attach_flow:
 638         if (hpe->hp->num_channels > 1) {
 639                 flow->flags |= MLX5E_TC_FLOW_HAIRPIN_RSS;
 640                 flow->nic_attr->hairpin_ft = hpe->hp->ttc.ft.t;
 641         } else {
 642                 flow->nic_attr->hairpin_tirn = hpe->hp->tirn;
 643         }
 644         list_add(&flow->hairpin, &hpe->flows);
 645
 646         return 0;
 647
 648 create_hairpin_err:
 649         kfree(hpe);
 650         return err;
 651 }
 652
 653 static void mlx5e_hairpin_flow_del(struct mlx5e_priv *priv,
 654                                    struct mlx5e_tc_flow *flow)
 655 {
 656         struct list_head *next = flow->hairpin.next;
 657
 658         list_del(&flow->hairpin);
 659
 660         /* no more hairpin flows for us, release the hairpin pair */
 661         if (list_empty(next)) {
 662                 struct mlx5e_hairpin_entry *hpe;
 663
 664                 hpe = list_entry(next, struct mlx5e_hairpin_entry, flows);
 665
 666                 netdev_dbg(priv->netdev, "del hairpin: peer %s\n",
 667                            hpe->hp->pair->peer_mdev->priv.name);
 668
 669                 mlx5e_hairpin_destroy(hpe->hp);
 670                 hash_del(&hpe->hairpin_hlist);
 671                 kfree(hpe);
 672         }
 673 }
 674
 675 static struct mlx5_flow_handle *
 676 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
 677                       struct mlx5e_tc_flow_parse_attr *parse_attr,
 678                       struct mlx5e_tc_flow *flow,
 679                       struct netlink_ext_ack *extack)
 680 {
 681         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
 682         struct mlx5_core_dev *dev = priv->mdev;
 683         struct mlx5_flow_destination dest[2] = {};
 684         struct mlx5_flow_act flow_act = {
 685                 .action = attr->action,
 686                 .has_flow_tag = true,
 687                 .flow_tag = attr->flow_tag,
 688                 .reformat_id = 0,
 689         };
 690         struct mlx5_fc *counter = NULL;
 691         struct mlx5_flow_handle *rule;
 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                         rule = ERR_PTR(err);
 699                         goto err_add_hairpin_flow;
 700                 }
 701                 if (flow->flags & MLX5E_TC_FLOW_HAIRPIN_RSS) {
 702                         dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
 703                         dest[dest_ix].ft = attr->hairpin_ft;
 704                 } else {
 705                         dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_TIR;
 706                         dest[dest_ix].tir_num = attr->hairpin_tirn;
 707                 }
 708                 dest_ix++;
 709         } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
 710                 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
 711                 dest[dest_ix].ft = priv->fs.vlan.ft.t;
 712                 dest_ix++;
 713         }
 714
 715         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
 716                 counter = mlx5_fc_create(dev, true);
 717                 if (IS_ERR(counter)) {
 718                         rule = ERR_CAST(counter);
 719                         goto err_fc_create;
 720                 }
 721                 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
 722                 dest[dest_ix].counter = counter;
 723                 dest_ix++;
 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                         rule = ERR_PTR(err);
 732                         goto err_create_mod_hdr_id;
 733                 }
 734         }
 735
 736         if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
 737                 int tc_grp_size, tc_tbl_size;
 738                 u32 max_flow_counter;
 739
 740                 max_flow_counter = (MLX5_CAP_GEN(dev, max_flow_counter_31_16) << 16) |
 741                                     MLX5_CAP_GEN(dev, max_flow_counter_15_0);
 742
 743                 tc_grp_size = min_t(int, max_flow_counter, MLX5E_TC_TABLE_MAX_GROUP_SIZE);
 744
 745                 tc_tbl_size = min_t(int, tc_grp_size * MLX5E_TC_TABLE_NUM_GROUPS,
 746                                     BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev, log_max_ft_size)));
 747
 748                 priv->fs.tc.t =
 749                         mlx5_create_auto_grouped_flow_table(priv->fs.ns,
 750                                                             MLX5E_TC_PRIO,
 751                                                             tc_tbl_size,
 752                                                             MLX5E_TC_TABLE_NUM_GROUPS,
 753                                                             MLX5E_TC_FT_LEVEL, 0);
 754                 if (IS_ERR(priv->fs.tc.t)) {
 755                         NL_SET_ERR_MSG_MOD(extack,
 756                                            "Failed to create tc offload table\n");
 757                         netdev_err(priv->netdev,
 758                                    "Failed to create tc offload table\n");
 759                         rule = ERR_CAST(priv->fs.tc.t);
 760                         goto err_create_ft;
 761                 }
 762
 763                 table_created = true;
 764         }
 765
 766         if (attr->match_level != MLX5_MATCH_NONE)
 767                 parse_attr->spec.match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
 768
 769         rule = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec,
 770                                    &flow_act, dest, dest_ix);
 771
 772         if (IS_ERR(rule))
 773                 goto err_add_rule;
 774
 775         return rule;
 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 rule;
 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 = mlx5_flow_rule_counter(flow->rule[0]);
 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 struct mlx5_flow_handle *
 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_flow_handle *rule = NULL;
 836         struct mlx5e_rep_priv *rpriv;
 837         struct mlx5e_priv *out_priv;
 838         int err;
 839
 840         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT) {
 841                 out_dev = __dev_get_by_index(dev_net(priv->netdev),
 842                                              attr->parse_attr->mirred_ifindex);
 843                 err = mlx5e_attach_encap(priv, &parse_attr->tun_info,
 844                                          out_dev, &encap_dev, flow, extack);
 845                 if (err) {
 846                         rule = ERR_PTR(err);
 847                         if (err != -EAGAIN)
 848                                 goto err_attach_encap;
 849                 }
 850                 out_priv = netdev_priv(encap_dev);
 851                 rpriv = out_priv->ppriv;
 852                 attr->out_rep[attr->out_count] = rpriv->rep;
 853                 attr->out_mdev[attr->out_count++] = out_priv->mdev;
 854         }
 855
 856         err = mlx5_eswitch_add_vlan_action(esw, attr);
 857         if (err) {
 858                 rule = ERR_PTR(err);
 859                 goto err_add_vlan;
 860         }
 861
 862         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
 863                 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
 864                 kfree(parse_attr->mod_hdr_actions);
 865                 if (err) {
 866                         rule = ERR_PTR(err);
 867                         goto err_mod_hdr;
 868                 }
 869         }
 870
 871         /* we get here if (1) there's no error (rule being null) or when
 872          * (2) there's an encap action and we're on -EAGAIN (no valid neigh)
 873          */
 874         if (rule != ERR_PTR(-EAGAIN)) {
 875                 rule = mlx5_eswitch_add_offloaded_rule(esw, &parse_attr->spec, attr);
 876                 if (IS_ERR(rule))
 877                         goto err_add_rule;
 878
 879                 if (attr->mirror_count) {
 880                         flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, &parse_attr->spec, attr);
 881                         if (IS_ERR(flow->rule[1]))
 882                                 goto err_fwd_rule;
 883                 }
 884         }
 885         return rule;
 886
 887 err_fwd_rule:
 888         mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
 889         rule = flow->rule[1];
 890 err_add_rule:
 891         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 892                 mlx5e_detach_mod_hdr(priv, flow);
 893 err_mod_hdr:
 894         mlx5_eswitch_del_vlan_action(esw, attr);
 895 err_add_vlan:
 896         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT)
 897                 mlx5e_detach_encap(priv, flow);
 898 err_attach_encap:
 899         return rule;
 900 }
 901
 902 static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
 903                                   struct mlx5e_tc_flow *flow)
 904 {
 905         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 906         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
 907
 908         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
 909                 flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
 910                 if (attr->mirror_count)
 911                         mlx5_eswitch_del_offloaded_rule(esw, flow->rule[1], attr);
 912                 mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
 913         }
 914
 915         mlx5_eswitch_del_vlan_action(esw, attr);
 916
 917         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT) {
 918                 mlx5e_detach_encap(priv, flow);
 919                 kvfree(attr->parse_attr);
 920         }
 921
 922         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
 923                 mlx5e_detach_mod_hdr(priv, flow);
 924 }
 925
 926 void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
 927                               struct mlx5e_encap_entry *e)
 928 {
 929         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 930         struct mlx5_esw_flow_attr *esw_attr;
 931         struct mlx5e_tc_flow *flow;
 932         int err;
 933
 934         err = mlx5_packet_reformat_alloc(priv->mdev, e->tunnel_type,
 935                                          e->encap_size, e->encap_header,
 936                                          MLX5_FLOW_NAMESPACE_FDB,
 937                                          &e->encap_id);
 938         if (err) {
 939                 mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %d\n",
 940                                err);
 941                 return;
 942         }
 943         e->flags |= MLX5_ENCAP_ENTRY_VALID;
 944         mlx5e_rep_queue_neigh_stats_work(priv);
 945
 946         list_for_each_entry(flow, &e->flows, encap) {
 947                 esw_attr = flow->esw_attr;
 948                 esw_attr->encap_id = e->encap_id;
 949                 flow->rule[0] = mlx5_eswitch_add_offloaded_rule(esw, &esw_attr->parse_attr->spec, esw_attr);
 950                 if (IS_ERR(flow->rule[0])) {
 951                         err = PTR_ERR(flow->rule[0]);
 952                         mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n",
 953                                        err);
 954                         continue;
 955                 }
 956
 957                 if (esw_attr->mirror_count) {
 958                         flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, &esw_attr->parse_attr->spec, esw_attr);
 959                         if (IS_ERR(flow->rule[1])) {
 960                                 mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], esw_attr);
 961                                 err = PTR_ERR(flow->rule[1]);
 962                                 mlx5_core_warn(priv->mdev, "Failed to update cached mirror flow, %d\n",
 963                                                err);
 964                                 continue;
 965                         }
 966                 }
 967
 968                 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
 969         }
 970 }
 971
 972 void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
 973                               struct mlx5e_encap_entry *e)
 974 {
 975         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 976         struct mlx5e_tc_flow *flow;
 977
 978         list_for_each_entry(flow, &e->flows, encap) {
 979                 if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
 980                         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
 981
 982                         flow->flags &= ~MLX5E_TC_FLOW_OFFLOADED;
 983                         if (attr->mirror_count)
 984                                 mlx5_eswitch_del_offloaded_rule(esw, flow->rule[1], attr);
 985                         mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
 986                 }
 987         }
 988
 989         if (e->flags & MLX5_ENCAP_ENTRY_VALID) {
 990                 e->flags &= ~MLX5_ENCAP_ENTRY_VALID;
 991                 mlx5_packet_reformat_dealloc(priv->mdev, e->encap_id);
 992         }
 993 }
 994
 995 void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
 996 {
 997         struct mlx5e_neigh *m_neigh = &nhe->m_neigh;
 998         u64 bytes, packets, lastuse = 0;
 999         struct mlx5e_tc_flow *flow;
1000         struct mlx5e_encap_entry *e;
1001         struct mlx5_fc *counter;
1002         struct neigh_table *tbl;
1003         bool neigh_used = false;
1004         struct neighbour *n;
1005
1006         if (m_neigh->family == AF_INET)
1007                 tbl = &arp_tbl;
1008 #if IS_ENABLED(CONFIG_IPV6)
1009         else if (m_neigh->family == AF_INET6)
1010                 tbl = &nd_tbl;
1011 #endif
1012         else
1013                 return;
1014
1015         list_for_each_entry(e, &nhe->encap_list, encap_list) {
1016                 if (!(e->flags & MLX5_ENCAP_ENTRY_VALID))
1017                         continue;
1018                 list_for_each_entry(flow, &e->flows, encap) {
1019                         if (flow->flags & MLX5E_TC_FLOW_OFFLOADED) {
1020                                 counter = mlx5_flow_rule_counter(flow->rule[0]);
1021                                 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
1022                                 if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) {
1023                                         neigh_used = true;
1024                                         break;
1025                                 }
1026                         }
1027                 }
1028                 if (neigh_used)
1029                         break;
1030         }
1031
1032         if (neigh_used) {
1033                 nhe->reported_lastuse = jiffies;
1034
1035                 /* find the relevant neigh according to the cached device and
1036                  * dst ip pair
1037                  */
1038                 n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev);
1039                 if (!n)
1040                         return;
1041
1042                 neigh_event_send(n, NULL);
1043                 neigh_release(n);
1044         }
1045 }
1046
1047 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
1048                                struct mlx5e_tc_flow *flow)
1049 {
1050         struct list_head *next = flow->encap.next;
1051
1052         list_del(&flow->encap);
1053         if (list_empty(next)) {
1054                 struct mlx5e_encap_entry *e;
1055
1056                 e = list_entry(next, struct mlx5e_encap_entry, flows);
1057                 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1058
1059                 if (e->flags & MLX5_ENCAP_ENTRY_VALID)
1060                         mlx5_packet_reformat_dealloc(priv->mdev, e->encap_id);
1061
1062                 hash_del_rcu(&e->encap_hlist);
1063                 kfree(e->encap_header);
1064                 kfree(e);
1065         }
1066 }
1067
1068 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
1069                               struct mlx5e_tc_flow *flow)
1070 {
1071         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
1072                 mlx5e_tc_del_fdb_flow(priv, flow);
1073         else
1074                 mlx5e_tc_del_nic_flow(priv, flow);
1075 }
1076
1077 static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
1078                              struct tc_cls_flower_offload *f)
1079 {
1080         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1081                                        outer_headers);
1082         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1083                                        outer_headers);
1084         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1085                                     misc_parameters);
1086         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1087                                     misc_parameters);
1088
1089         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
1090         MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
1091
1092         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
1093                 struct flow_dissector_key_keyid *key =
1094                         skb_flow_dissector_target(f->dissector,
1095                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
1096                                                   f->key);
1097                 struct flow_dissector_key_keyid *mask =
1098                         skb_flow_dissector_target(f->dissector,
1099                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
1100                                                   f->mask);
1101                 MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
1102                          be32_to_cpu(mask->keyid));
1103                 MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
1104                          be32_to_cpu(key->keyid));
1105         }
1106 }
1107
1108 static int parse_tunnel_attr(struct mlx5e_priv *priv,
1109                              struct mlx5_flow_spec *spec,
1110                              struct tc_cls_flower_offload *f)
1111 {
1112         struct netlink_ext_ack *extack = f->common.extack;
1113         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1114                                        outer_headers);
1115         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1116                                        outer_headers);
1117
1118         struct flow_dissector_key_control *enc_control =
1119                 skb_flow_dissector_target(f->dissector,
1120                                           FLOW_DISSECTOR_KEY_ENC_CONTROL,
1121                                           f->key);
1122
1123         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
1124                 struct flow_dissector_key_ports *key =
1125                         skb_flow_dissector_target(f->dissector,
1126                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
1127                                                   f->key);
1128                 struct flow_dissector_key_ports *mask =
1129                         skb_flow_dissector_target(f->dissector,
1130                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
1131                                                   f->mask);
1132
1133                 /* Full udp dst port must be given */
1134                 if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
1135                         goto vxlan_match_offload_err;
1136
1137                 if (mlx5_vxlan_lookup_port(priv->mdev->vxlan, be16_to_cpu(key->dst)) &&
1138                     MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
1139                         parse_vxlan_attr(spec, f);
1140                 else {
1141                         NL_SET_ERR_MSG_MOD(extack,
1142                                            "port isn't an offloaded vxlan udp dport");
1143                         netdev_warn(priv->netdev,
1144                                     "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
1145                         return -EOPNOTSUPP;
1146                 }
1147
1148                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1149                          udp_dport, ntohs(mask->dst));
1150                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1151                          udp_dport, ntohs(key->dst));
1152
1153                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1154                          udp_sport, ntohs(mask->src));
1155                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1156                          udp_sport, ntohs(key->src));
1157         } else { /* udp dst port must be given */
1158 vxlan_match_offload_err:
1159                 NL_SET_ERR_MSG_MOD(extack,
1160                                    "IP tunnel decap offload supported only for vxlan, must set UDP dport");
1161                 netdev_warn(priv->netdev,
1162                             "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
1163                 return -EOPNOTSUPP;
1164         }
1165
1166         if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1167                 struct flow_dissector_key_ipv4_addrs *key =
1168                         skb_flow_dissector_target(f->dissector,
1169                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
1170                                                   f->key);
1171                 struct flow_dissector_key_ipv4_addrs *mask =
1172                         skb_flow_dissector_target(f->dissector,
1173                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
1174                                                   f->mask);
1175                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1176                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
1177                          ntohl(mask->src));
1178                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1179                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
1180                          ntohl(key->src));
1181
1182                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1183                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
1184                          ntohl(mask->dst));
1185                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1186                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
1187                          ntohl(key->dst));
1188
1189                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
1190                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
1191         } else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1192                 struct flow_dissector_key_ipv6_addrs *key =
1193                         skb_flow_dissector_target(f->dissector,
1194                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
1195                                                   f->key);
1196                 struct flow_dissector_key_ipv6_addrs *mask =
1197                         skb_flow_dissector_target(f->dissector,
1198                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
1199                                                   f->mask);
1200
1201                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1202                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
1203                        &mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
1204                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1205                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
1206                        &key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
1207
1208                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1209                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1210                        &mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
1211                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1212                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1213                        &key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
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_IPV6);
1217         }
1218
1219         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_IP)) {
1220                 struct flow_dissector_key_ip *key =
1221                         skb_flow_dissector_target(f->dissector,
1222                                                   FLOW_DISSECTOR_KEY_ENC_IP,
1223                                                   f->key);
1224                 struct flow_dissector_key_ip *mask =
1225                         skb_flow_dissector_target(f->dissector,
1226                                                   FLOW_DISSECTOR_KEY_ENC_IP,
1227                                                   f->mask);
1228
1229                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, mask->tos & 0x3);
1230                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, key->tos & 0x3);
1231
1232                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, mask->tos >> 2);
1233                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, key->tos  >> 2);
1234
1235                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, mask->ttl);
1236                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, key->ttl);
1237
1238                 if (mask->ttl &&
1239                     !MLX5_CAP_ESW_FLOWTABLE_FDB
1240                         (priv->mdev,
1241                          ft_field_support.outer_ipv4_ttl)) {
1242                         NL_SET_ERR_MSG_MOD(extack,
1243                                            "Matching on TTL is not supported");
1244                         return -EOPNOTSUPP;
1245                 }
1246
1247         }
1248
1249         /* Enforce DMAC when offloading incoming tunneled flows.
1250          * Flow counters require a match on the DMAC.
1251          */
1252         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
1253         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
1254         ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1255                                      dmac_47_16), priv->netdev->dev_addr);
1256
1257         /* let software handle IP fragments */
1258         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
1259         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
1260
1261         return 0;
1262 }
1263
1264 static int __parse_cls_flower(struct mlx5e_priv *priv,
1265                               struct mlx5_flow_spec *spec,
1266                               struct tc_cls_flower_offload *f,
1267                               u8 *match_level)
1268 {
1269         struct netlink_ext_ack *extack = f->common.extack;
1270         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1271                                        outer_headers);
1272         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1273                                        outer_headers);
1274         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1275                                     misc_parameters);
1276         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1277                                     misc_parameters);
1278         u16 addr_type = 0;
1279         u8 ip_proto = 0;
1280
1281         *match_level = MLX5_MATCH_NONE;
1282
1283         if (f->dissector->used_keys &
1284             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
1285               BIT(FLOW_DISSECTOR_KEY_BASIC) |
1286               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
1287               BIT(FLOW_DISSECTOR_KEY_VLAN) |
1288               BIT(FLOW_DISSECTOR_KEY_CVLAN) |
1289               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
1290               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
1291               BIT(FLOW_DISSECTOR_KEY_PORTS) |
1292               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
1293               BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
1294               BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
1295               BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
1296               BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
1297               BIT(FLOW_DISSECTOR_KEY_TCP) |
1298               BIT(FLOW_DISSECTOR_KEY_IP)  |
1299               BIT(FLOW_DISSECTOR_KEY_ENC_IP))) {
1300                 NL_SET_ERR_MSG_MOD(extack, "Unsupported key");
1301                 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
1302                             f->dissector->used_keys);
1303                 return -EOPNOTSUPP;
1304         }
1305
1306         if ((dissector_uses_key(f->dissector,
1307                                 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
1308              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
1309              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
1310             dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
1311                 struct flow_dissector_key_control *key =
1312                         skb_flow_dissector_target(f->dissector,
1313                                                   FLOW_DISSECTOR_KEY_ENC_CONTROL,
1314                                                   f->key);
1315                 switch (key->addr_type) {
1316                 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
1317                 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
1318                         if (parse_tunnel_attr(priv, spec, f))
1319                                 return -EOPNOTSUPP;
1320                         break;
1321                 default:
1322                         return -EOPNOTSUPP;
1323                 }
1324
1325                 /* In decap flow, header pointers should point to the inner
1326                  * headers, outer header were already set by parse_tunnel_attr
1327                  */
1328                 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1329                                          inner_headers);
1330                 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1331                                          inner_headers);
1332         }
1333
1334         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
1335                 struct flow_dissector_key_eth_addrs *key =
1336                         skb_flow_dissector_target(f->dissector,
1337                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
1338                                                   f->key);
1339                 struct flow_dissector_key_eth_addrs *mask =
1340                         skb_flow_dissector_target(f->dissector,
1341                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
1342                                                   f->mask);
1343
1344                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1345                                              dmac_47_16),
1346                                 mask->dst);
1347                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1348                                              dmac_47_16),
1349                                 key->dst);
1350
1351                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1352                                              smac_47_16),
1353                                 mask->src);
1354                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1355                                              smac_47_16),
1356                                 key->src);
1357
1358                 if (!is_zero_ether_addr(mask->src) || !is_zero_ether_addr(mask->dst))
1359                         *match_level = MLX5_MATCH_L2;
1360         }
1361
1362         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
1363                 struct flow_dissector_key_vlan *key =
1364                         skb_flow_dissector_target(f->dissector,
1365                                                   FLOW_DISSECTOR_KEY_VLAN,
1366                                                   f->key);
1367                 struct flow_dissector_key_vlan *mask =
1368                         skb_flow_dissector_target(f->dissector,
1369                                                   FLOW_DISSECTOR_KEY_VLAN,
1370                                                   f->mask);
1371                 if (mask->vlan_id || mask->vlan_priority || mask->vlan_tpid) {
1372                         if (key->vlan_tpid == htons(ETH_P_8021AD)) {
1373                                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1374                                          svlan_tag, 1);
1375                                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1376                                          svlan_tag, 1);
1377                         } else {
1378                                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1379                                          cvlan_tag, 1);
1380                                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1381                                          cvlan_tag, 1);
1382                         }
1383
1384                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
1385                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
1386
1387                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
1388                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
1389
1390                         *match_level = MLX5_MATCH_L2;
1391                 }
1392         } else {
1393                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, svlan_tag, 1);
1394                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
1395         }
1396
1397         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CVLAN)) {
1398                 struct flow_dissector_key_vlan *key =
1399                         skb_flow_dissector_target(f->dissector,
1400                                                   FLOW_DISSECTOR_KEY_CVLAN,
1401                                                   f->key);
1402                 struct flow_dissector_key_vlan *mask =
1403                         skb_flow_dissector_target(f->dissector,
1404                                                   FLOW_DISSECTOR_KEY_CVLAN,
1405                                                   f->mask);
1406                 if (mask->vlan_id || mask->vlan_priority || mask->vlan_tpid) {
1407                         if (key->vlan_tpid == htons(ETH_P_8021AD)) {
1408                                 MLX5_SET(fte_match_set_misc, misc_c,
1409                                          outer_second_svlan_tag, 1);
1410                                 MLX5_SET(fte_match_set_misc, misc_v,
1411                                          outer_second_svlan_tag, 1);
1412                         } else {
1413                                 MLX5_SET(fte_match_set_misc, misc_c,
1414                                          outer_second_cvlan_tag, 1);
1415                                 MLX5_SET(fte_match_set_misc, misc_v,
1416                                          outer_second_cvlan_tag, 1);
1417                         }
1418
1419                         MLX5_SET(fte_match_set_misc, misc_c, outer_second_vid,
1420                                  mask->vlan_id);
1421                         MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid,
1422                                  key->vlan_id);
1423                         MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio,
1424                                  mask->vlan_priority);
1425                         MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio,
1426                                  key->vlan_priority);
1427
1428                         *match_level = MLX5_MATCH_L2;
1429                 }
1430         }
1431
1432         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
1433                 struct flow_dissector_key_basic *key =
1434                         skb_flow_dissector_target(f->dissector,
1435                                                   FLOW_DISSECTOR_KEY_BASIC,
1436                                                   f->key);
1437                 struct flow_dissector_key_basic *mask =
1438                         skb_flow_dissector_target(f->dissector,
1439                                                   FLOW_DISSECTOR_KEY_BASIC,
1440                                                   f->mask);
1441                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
1442                          ntohs(mask->n_proto));
1443                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
1444                          ntohs(key->n_proto));
1445
1446                 if (mask->n_proto)
1447                         *match_level = MLX5_MATCH_L2;
1448         }
1449
1450         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
1451                 struct flow_dissector_key_control *key =
1452                         skb_flow_dissector_target(f->dissector,
1453                                                   FLOW_DISSECTOR_KEY_CONTROL,
1454                                                   f->key);
1455
1456                 struct flow_dissector_key_control *mask =
1457                         skb_flow_dissector_target(f->dissector,
1458                                                   FLOW_DISSECTOR_KEY_CONTROL,
1459                                                   f->mask);
1460                 addr_type = key->addr_type;
1461
1462                 /* the HW doesn't support frag first/later */
1463                 if (mask->flags & FLOW_DIS_FIRST_FRAG)
1464                         return -EOPNOTSUPP;
1465
1466                 if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
1467                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
1468                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
1469                                  key->flags & FLOW_DIS_IS_FRAGMENT);
1470
1471                         /* the HW doesn't need L3 inline to match on frag=no */
1472                         if (!(key->flags & FLOW_DIS_IS_FRAGMENT))
1473                                 *match_level = MLX5_INLINE_MODE_L2;
1474         /* ***  L2 attributes parsing up to here *** */
1475                         else
1476                                 *match_level = MLX5_INLINE_MODE_IP;
1477                 }
1478         }
1479
1480         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
1481                 struct flow_dissector_key_basic *key =
1482                         skb_flow_dissector_target(f->dissector,
1483                                                   FLOW_DISSECTOR_KEY_BASIC,
1484                                                   f->key);
1485                 struct flow_dissector_key_basic *mask =
1486                         skb_flow_dissector_target(f->dissector,
1487                                                   FLOW_DISSECTOR_KEY_BASIC,
1488                                                   f->mask);
1489                 ip_proto = key->ip_proto;
1490
1491                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
1492                          mask->ip_proto);
1493                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
1494                          key->ip_proto);
1495
1496                 if (mask->ip_proto)
1497                         *match_level = MLX5_MATCH_L3;
1498         }
1499
1500         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1501                 struct flow_dissector_key_ipv4_addrs *key =
1502                         skb_flow_dissector_target(f->dissector,
1503                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
1504                                                   f->key);
1505                 struct flow_dissector_key_ipv4_addrs *mask =
1506                         skb_flow_dissector_target(f->dissector,
1507                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
1508                                                   f->mask);
1509
1510                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1511                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
1512                        &mask->src, sizeof(mask->src));
1513                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1514                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
1515                        &key->src, sizeof(key->src));
1516                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1517                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
1518                        &mask->dst, sizeof(mask->dst));
1519                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1520                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
1521                        &key->dst, sizeof(key->dst));
1522
1523                 if (mask->src || mask->dst)
1524                         *match_level = MLX5_MATCH_L3;
1525         }
1526
1527         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1528                 struct flow_dissector_key_ipv6_addrs *key =
1529                         skb_flow_dissector_target(f->dissector,
1530                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
1531                                                   f->key);
1532                 struct flow_dissector_key_ipv6_addrs *mask =
1533                         skb_flow_dissector_target(f->dissector,
1534                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
1535                                                   f->mask);
1536
1537                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1538                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
1539                        &mask->src, sizeof(mask->src));
1540                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1541                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
1542                        &key->src, sizeof(key->src));
1543
1544                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1545                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1546                        &mask->dst, sizeof(mask->dst));
1547                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1548                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1549                        &key->dst, sizeof(key->dst));
1550
1551                 if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
1552                     ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
1553                         *match_level = MLX5_MATCH_L3;
1554         }
1555
1556         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_IP)) {
1557                 struct flow_dissector_key_ip *key =
1558                         skb_flow_dissector_target(f->dissector,
1559                                                   FLOW_DISSECTOR_KEY_IP,
1560                                                   f->key);
1561                 struct flow_dissector_key_ip *mask =
1562                         skb_flow_dissector_target(f->dissector,
1563                                                   FLOW_DISSECTOR_KEY_IP,
1564                                                   f->mask);
1565
1566                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn, mask->tos & 0x3);
1567                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn, key->tos & 0x3);
1568
1569                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp, mask->tos >> 2);
1570                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp, key->tos  >> 2);
1571
1572                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit, mask->ttl);
1573                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit, key->ttl);
1574
1575                 if (mask->ttl &&
1576                     !MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
1577                                                 ft_field_support.outer_ipv4_ttl)) {
1578                         NL_SET_ERR_MSG_MOD(extack,
1579                                            "Matching on TTL is not supported");
1580                         return -EOPNOTSUPP;
1581                 }
1582
1583                 if (mask->tos || mask->ttl)
1584                         *match_level = MLX5_MATCH_L3;
1585         }
1586
1587         /* ***  L3 attributes parsing up to here *** */
1588
1589         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
1590                 struct flow_dissector_key_ports *key =
1591                         skb_flow_dissector_target(f->dissector,
1592                                                   FLOW_DISSECTOR_KEY_PORTS,
1593                                                   f->key);
1594                 struct flow_dissector_key_ports *mask =
1595                         skb_flow_dissector_target(f->dissector,
1596                                                   FLOW_DISSECTOR_KEY_PORTS,
1597                                                   f->mask);
1598                 switch (ip_proto) {
1599                 case IPPROTO_TCP:
1600                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1601                                  tcp_sport, ntohs(mask->src));
1602                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1603                                  tcp_sport, ntohs(key->src));
1604
1605                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1606                                  tcp_dport, ntohs(mask->dst));
1607                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1608                                  tcp_dport, ntohs(key->dst));
1609                         break;
1610
1611                 case IPPROTO_UDP:
1612                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1613                                  udp_sport, ntohs(mask->src));
1614                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1615                                  udp_sport, ntohs(key->src));
1616
1617                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1618                                  udp_dport, ntohs(mask->dst));
1619                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1620                                  udp_dport, ntohs(key->dst));
1621                         break;
1622                 default:
1623                         NL_SET_ERR_MSG_MOD(extack,
1624                                            "Only UDP and TCP transports are supported for L4 matching");
1625                         netdev_err(priv->netdev,
1626                                    "Only UDP and TCP transport are supported\n");
1627                         return -EINVAL;
1628                 }
1629
1630                 if (mask->src || mask->dst)
1631                         *match_level = MLX5_MATCH_L4;
1632         }
1633
1634         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_TCP)) {
1635                 struct flow_dissector_key_tcp *key =
1636                         skb_flow_dissector_target(f->dissector,
1637                                                   FLOW_DISSECTOR_KEY_TCP,
1638                                                   f->key);
1639                 struct flow_dissector_key_tcp *mask =
1640                         skb_flow_dissector_target(f->dissector,
1641                                                   FLOW_DISSECTOR_KEY_TCP,
1642                                                   f->mask);
1643
1644                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
1645                          ntohs(mask->flags));
1646                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
1647                          ntohs(key->flags));
1648
1649                 if (mask->flags)
1650                         *match_level = MLX5_MATCH_L4;
1651         }
1652
1653         return 0;
1654 }
1655
1656 static int parse_cls_flower(struct mlx5e_priv *priv,
1657                             struct mlx5e_tc_flow *flow,
1658                             struct mlx5_flow_spec *spec,
1659                             struct tc_cls_flower_offload *f)
1660 {
1661         struct netlink_ext_ack *extack = f->common.extack;
1662         struct mlx5_core_dev *dev = priv->mdev;
1663         struct mlx5_eswitch *esw = dev->priv.eswitch;
1664         struct mlx5e_rep_priv *rpriv = priv->ppriv;
1665         struct mlx5_eswitch_rep *rep;
1666         u8 match_level;
1667         int err;
1668
1669         err = __parse_cls_flower(priv, spec, f, &match_level);
1670
1671         if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH)) {
1672                 rep = rpriv->rep;
1673                 if (rep->vport != FDB_UPLINK_VPORT &&
1674                     (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
1675                     esw->offloads.inline_mode < match_level)) {
1676                         NL_SET_ERR_MSG_MOD(extack,
1677                                            "Flow is not offloaded due to min inline setting");
1678                         netdev_warn(priv->netdev,
1679                                     "Flow is not offloaded due to min inline setting, required %d actual %d\n",
1680                                     match_level, esw->offloads.inline_mode);
1681                         return -EOPNOTSUPP;
1682                 }
1683         }
1684
1685         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
1686                 flow->esw_attr->match_level = match_level;
1687         else
1688                 flow->nic_attr->match_level = match_level;
1689
1690         return err;
1691 }
1692
1693 struct pedit_headers {
1694         struct ethhdr  eth;
1695         struct iphdr   ip4;
1696         struct ipv6hdr ip6;
1697         struct tcphdr  tcp;
1698         struct udphdr  udp;
1699 };
1700
1701 static int pedit_header_offsets[] = {
1702         [TCA_PEDIT_KEY_EX_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth),
1703         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4),
1704         [TCA_PEDIT_KEY_EX_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6),
1705         [TCA_PEDIT_KEY_EX_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp),
1706         [TCA_PEDIT_KEY_EX_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp),
1707 };
1708
1709 #define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype])
1710
1711 static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset,
1712                          struct pedit_headers *masks,
1713                          struct pedit_headers *vals)
1714 {
1715         u32 *curr_pmask, *curr_pval;
1716
1717         if (hdr_type >= __PEDIT_HDR_TYPE_MAX)
1718                 goto out_err;
1719
1720         curr_pmask = (u32 *)(pedit_header(masks, hdr_type) + offset);
1721         curr_pval  = (u32 *)(pedit_header(vals, hdr_type) + offset);
1722
1723         if (*curr_pmask & mask)  /* disallow acting twice on the same location */
1724                 goto out_err;
1725
1726         *curr_pmask |= mask;
1727         *curr_pval  |= (val & mask);
1728
1729         return 0;
1730
1731 out_err:
1732         return -EOPNOTSUPP;
1733 }
1734
1735 struct mlx5_fields {
1736         u8  field;
1737         u8  size;
1738         u32 offset;
1739 };
1740
1741 #define OFFLOAD(fw_field, size, field, off) \
1742                 {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, size, offsetof(struct pedit_headers, field) + (off)}
1743
1744 static struct mlx5_fields fields[] = {
1745         OFFLOAD(DMAC_47_16, 4, eth.h_dest[0], 0),
1746         OFFLOAD(DMAC_15_0,  2, eth.h_dest[4], 0),
1747         OFFLOAD(SMAC_47_16, 4, eth.h_source[0], 0),
1748         OFFLOAD(SMAC_15_0,  2, eth.h_source[4], 0),
1749         OFFLOAD(ETHERTYPE,  2, eth.h_proto, 0),
1750
1751         OFFLOAD(IP_TTL, 1, ip4.ttl,   0),
1752         OFFLOAD(SIPV4,  4, ip4.saddr, 0),
1753         OFFLOAD(DIPV4,  4, ip4.daddr, 0),
1754
1755         OFFLOAD(SIPV6_127_96, 4, ip6.saddr.s6_addr32[0], 0),
1756         OFFLOAD(SIPV6_95_64,  4, ip6.saddr.s6_addr32[1], 0),
1757         OFFLOAD(SIPV6_63_32,  4, ip6.saddr.s6_addr32[2], 0),
1758         OFFLOAD(SIPV6_31_0,   4, ip6.saddr.s6_addr32[3], 0),
1759         OFFLOAD(DIPV6_127_96, 4, ip6.daddr.s6_addr32[0], 0),
1760         OFFLOAD(DIPV6_95_64,  4, ip6.daddr.s6_addr32[1], 0),
1761         OFFLOAD(DIPV6_63_32,  4, ip6.daddr.s6_addr32[2], 0),
1762         OFFLOAD(DIPV6_31_0,   4, ip6.daddr.s6_addr32[3], 0),
1763         OFFLOAD(IPV6_HOPLIMIT, 1, ip6.hop_limit, 0),
1764
1765         OFFLOAD(TCP_SPORT, 2, tcp.source,  0),
1766         OFFLOAD(TCP_DPORT, 2, tcp.dest,    0),
1767         OFFLOAD(TCP_FLAGS, 1, tcp.ack_seq, 5),
1768
1769         OFFLOAD(UDP_SPORT, 2, udp.source, 0),
1770         OFFLOAD(UDP_DPORT, 2, udp.dest,   0),
1771 };
1772
1773 /* On input attr->num_mod_hdr_actions tells how many HW actions can be parsed at
1774  * max from the SW pedit action. On success, it says how many HW actions were
1775  * actually parsed.
1776  */
1777 static int offload_pedit_fields(struct pedit_headers *masks,
1778                                 struct pedit_headers *vals,
1779                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
1780                                 struct netlink_ext_ack *extack)
1781 {
1782         struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
1783         int i, action_size, nactions, max_actions, first, last, next_z;
1784         void *s_masks_p, *a_masks_p, *vals_p;
1785         struct mlx5_fields *f;
1786         u8 cmd, field_bsize;
1787         u32 s_mask, a_mask;
1788         unsigned long mask;
1789         __be32 mask_be32;
1790         __be16 mask_be16;
1791         void *action;
1792
1793         set_masks = &masks[TCA_PEDIT_KEY_EX_CMD_SET];
1794         add_masks = &masks[TCA_PEDIT_KEY_EX_CMD_ADD];
1795         set_vals = &vals[TCA_PEDIT_KEY_EX_CMD_SET];
1796         add_vals = &vals[TCA_PEDIT_KEY_EX_CMD_ADD];
1797
1798         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
1799         action = parse_attr->mod_hdr_actions;
1800         max_actions = parse_attr->num_mod_hdr_actions;
1801         nactions = 0;
1802
1803         for (i = 0; i < ARRAY_SIZE(fields); i++) {
1804                 f = &fields[i];
1805                 /* avoid seeing bits set from previous iterations */
1806                 s_mask = 0;
1807                 a_mask = 0;
1808
1809                 s_masks_p = (void *)set_masks + f->offset;
1810                 a_masks_p = (void *)add_masks + f->offset;
1811
1812                 memcpy(&s_mask, s_masks_p, f->size);
1813                 memcpy(&a_mask, a_masks_p, f->size);
1814
1815                 if (!s_mask && !a_mask) /* nothing to offload here */
1816                         continue;
1817
1818                 if (s_mask && a_mask) {
1819                         NL_SET_ERR_MSG_MOD(extack,
1820                                            "can't set and add to the same HW field");
1821                         printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field);
1822                         return -EOPNOTSUPP;
1823                 }
1824
1825                 if (nactions == max_actions) {
1826                         NL_SET_ERR_MSG_MOD(extack,
1827                                            "too many pedit actions, can't offload");
1828                         printk(KERN_WARNING "mlx5: parsed %d pedit actions, can't do more\n", nactions);
1829                         return -EOPNOTSUPP;
1830                 }
1831
1832                 if (s_mask) {
1833                         cmd  = MLX5_ACTION_TYPE_SET;
1834                         mask = s_mask;
1835                         vals_p = (void *)set_vals + f->offset;
1836                         /* clear to denote we consumed this field */
1837                         memset(s_masks_p, 0, f->size);
1838                 } else {
1839                         cmd  = MLX5_ACTION_TYPE_ADD;
1840                         mask = a_mask;
1841                         vals_p = (void *)add_vals + f->offset;
1842                         /* clear to denote we consumed this field */
1843                         memset(a_masks_p, 0, f->size);
1844                 }
1845
1846                 field_bsize = f->size * BITS_PER_BYTE;
1847
1848                 if (field_bsize == 32) {
1849                         mask_be32 = *(__be32 *)&mask;
1850                         mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32));
1851                 } else if (field_bsize == 16) {
1852                         mask_be16 = *(__be16 *)&mask;
1853                         mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16));
1854                 }
1855
1856                 first = find_first_bit(&mask, field_bsize);
1857                 next_z = find_next_zero_bit(&mask, field_bsize, first);
1858                 last  = find_last_bit(&mask, field_bsize);
1859                 if (first < next_z && next_z < last) {
1860                         NL_SET_ERR_MSG_MOD(extack,
1861                                            "rewrite of few sub-fields isn't supported");
1862                         printk(KERN_WARNING "mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n",
1863                                mask);
1864                         return -EOPNOTSUPP;
1865                 }
1866
1867                 MLX5_SET(set_action_in, action, action_type, cmd);
1868                 MLX5_SET(set_action_in, action, field, f->field);
1869
1870                 if (cmd == MLX5_ACTION_TYPE_SET) {
1871                         MLX5_SET(set_action_in, action, offset, first);
1872                         /* length is num of bits to be written, zero means length of 32 */
1873                         MLX5_SET(set_action_in, action, length, (last - first + 1));
1874                 }
1875
1876                 if (field_bsize == 32)
1877                         MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first);
1878                 else if (field_bsize == 16)
1879                         MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first);
1880                 else if (field_bsize == 8)
1881                         MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first);
1882
1883                 action += action_size;
1884                 nactions++;
1885         }
1886
1887         parse_attr->num_mod_hdr_actions = nactions;
1888         return 0;
1889 }
1890
1891 static int alloc_mod_hdr_actions(struct mlx5e_priv *priv,
1892                                  const struct tc_action *a, int namespace,
1893                                  struct mlx5e_tc_flow_parse_attr *parse_attr)
1894 {
1895         int nkeys, action_size, max_actions;
1896
1897         nkeys = tcf_pedit_nkeys(a);
1898         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
1899
1900         if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
1901                 max_actions = MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev, max_modify_header_actions);
1902         else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
1903                 max_actions = MLX5_CAP_FLOWTABLE_NIC_RX(priv->mdev, max_modify_header_actions);
1904
1905         /* can get up to crazingly 16 HW actions in 32 bits pedit SW key */
1906         max_actions = min(max_actions, nkeys * 16);
1907
1908         parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL);
1909         if (!parse_attr->mod_hdr_actions)
1910                 return -ENOMEM;
1911
1912         parse_attr->num_mod_hdr_actions = max_actions;
1913         return 0;
1914 }
1915
1916 static const struct pedit_headers zero_masks = {};
1917
1918 static int parse_tc_pedit_action(struct mlx5e_priv *priv,
1919                                  const struct tc_action *a, int namespace,
1920                                  struct mlx5e_tc_flow_parse_attr *parse_attr,
1921                                  struct netlink_ext_ack *extack)
1922 {
1923         struct pedit_headers masks[__PEDIT_CMD_MAX], vals[__PEDIT_CMD_MAX], *cmd_masks;
1924         int nkeys, i, err = -EOPNOTSUPP;
1925         u32 mask, val, offset;
1926         u8 cmd, htype;
1927
1928         nkeys = tcf_pedit_nkeys(a);
1929
1930         memset(masks, 0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1931         memset(vals,  0, sizeof(struct pedit_headers) * __PEDIT_CMD_MAX);
1932
1933         for (i = 0; i < nkeys; i++) {
1934                 htype = tcf_pedit_htype(a, i);
1935                 cmd = tcf_pedit_cmd(a, i);
1936                 err = -EOPNOTSUPP; /* can't be all optimistic */
1937
1938                 if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_NETWORK) {
1939                         NL_SET_ERR_MSG_MOD(extack,
1940                                            "legacy pedit isn't offloaded");
1941                         goto out_err;
1942                 }
1943
1944                 if (cmd != TCA_PEDIT_KEY_EX_CMD_SET && cmd != TCA_PEDIT_KEY_EX_CMD_ADD) {
1945                         NL_SET_ERR_MSG_MOD(extack, "pedit cmd isn't offloaded");
1946                         goto out_err;
1947                 }
1948
1949                 mask = tcf_pedit_mask(a, i);
1950                 val = tcf_pedit_val(a, i);
1951                 offset = tcf_pedit_offset(a, i);
1952
1953                 err = set_pedit_val(htype, ~mask, val, offset, &masks[cmd], &vals[cmd]);
1954                 if (err)
1955                         goto out_err;
1956         }
1957
1958         err = alloc_mod_hdr_actions(priv, a, namespace, parse_attr);
1959         if (err)
1960                 goto out_err;
1961
1962         err = offload_pedit_fields(masks, vals, parse_attr, extack);
1963         if (err < 0)
1964                 goto out_dealloc_parsed_actions;
1965
1966         for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
1967                 cmd_masks = &masks[cmd];
1968                 if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
1969                         NL_SET_ERR_MSG_MOD(extack,
1970                                            "attempt to offload an unsupported field");
1971                         netdev_warn(priv->netdev, "attempt to offload an unsupported field (cmd %d)\n", cmd);
1972                         print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
1973                                        16, 1, cmd_masks, sizeof(zero_masks), true);
1974                         err = -EOPNOTSUPP;
1975                         goto out_dealloc_parsed_actions;
1976                 }
1977         }
1978
1979         return 0;
1980
1981 out_dealloc_parsed_actions:
1982         kfree(parse_attr->mod_hdr_actions);
1983 out_err:
1984         return err;
1985 }
1986
1987 static bool csum_offload_supported(struct mlx5e_priv *priv,
1988                                    u32 action,
1989                                    u32 update_flags,
1990                                    struct netlink_ext_ack *extack)
1991 {
1992         u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP |
1993                          TCA_CSUM_UPDATE_FLAG_UDP;
1994
1995         /*  The HW recalcs checksums only if re-writing headers */
1996         if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) {
1997                 NL_SET_ERR_MSG_MOD(extack,
1998                                    "TC csum action is only offloaded with pedit");
1999                 netdev_warn(priv->netdev,
2000                             "TC csum action is only offloaded with pedit\n");
2001                 return false;
2002         }
2003
2004         if (update_flags & ~prot_flags) {
2005                 NL_SET_ERR_MSG_MOD(extack,
2006                                    "can't offload TC csum action for some header/s");
2007                 netdev_warn(priv->netdev,
2008                             "can't offload TC csum action for some header/s - flags %#x\n",
2009                             update_flags);
2010                 return false;
2011         }
2012
2013         return true;
2014 }
2015
2016 static bool modify_header_match_supported(struct mlx5_flow_spec *spec,
2017                                           struct tcf_exts *exts,
2018                                           struct netlink_ext_ack *extack)
2019 {
2020         const struct tc_action *a;
2021         bool modify_ip_header;
2022         LIST_HEAD(actions);
2023         u8 htype, ip_proto;
2024         void *headers_v;
2025         u16 ethertype;
2026         int nkeys, i;
2027
2028         headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
2029         ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
2030
2031         /* for non-IP we only re-write MACs, so we're okay */
2032         if (ethertype != ETH_P_IP && ethertype != ETH_P_IPV6)
2033                 goto out_ok;
2034
2035         modify_ip_header = false;
2036         tcf_exts_for_each_action(i, a, exts) {
2037                 int k;
2038
2039                 if (!is_tcf_pedit(a))
2040                         continue;
2041
2042                 nkeys = tcf_pedit_nkeys(a);
2043                 for (k = 0; k < nkeys; k++) {
2044                         htype = tcf_pedit_htype(a, k);
2045                         if (htype == TCA_PEDIT_KEY_EX_HDR_TYPE_IP4 ||
2046                             htype == TCA_PEDIT_KEY_EX_HDR_TYPE_IP6) {
2047                                 modify_ip_header = true;
2048                                 break;
2049                         }
2050                 }
2051         }
2052
2053         ip_proto = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol);
2054         if (modify_ip_header && ip_proto != IPPROTO_TCP &&
2055             ip_proto != IPPROTO_UDP && ip_proto != IPPROTO_ICMP) {
2056                 NL_SET_ERR_MSG_MOD(extack,
2057                                    "can't offload re-write of non TCP/UDP");
2058                 pr_info("can't offload re-write of ip proto %d\n", ip_proto);
2059                 return false;
2060         }
2061
2062 out_ok:
2063         return true;
2064 }
2065
2066 static bool actions_match_supported(struct mlx5e_priv *priv,
2067                                     struct tcf_exts *exts,
2068                                     struct mlx5e_tc_flow_parse_attr *parse_attr,
2069                                     struct mlx5e_tc_flow *flow,
2070                                     struct netlink_ext_ack *extack)
2071 {
2072         u32 actions;
2073
2074         if (flow->flags & MLX5E_TC_FLOW_ESWITCH)
2075                 actions = flow->esw_attr->action;
2076         else
2077                 actions = flow->nic_attr->action;
2078
2079         if (flow->flags & MLX5E_TC_FLOW_EGRESS &&
2080             !(actions & MLX5_FLOW_CONTEXT_ACTION_DECAP))
2081                 return false;
2082
2083         if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
2084                 return modify_header_match_supported(&parse_attr->spec, exts,
2085                                                      extack);
2086
2087         return true;
2088 }
2089
2090 static bool same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
2091 {
2092         struct mlx5_core_dev *fmdev, *pmdev;
2093         u64 fsystem_guid, psystem_guid;
2094
2095         fmdev = priv->mdev;
2096         pmdev = peer_priv->mdev;
2097
2098         fsystem_guid = mlx5_query_nic_system_image_guid(fmdev);
2099         psystem_guid = mlx5_query_nic_system_image_guid(pmdev);
2100
2101         return (fsystem_guid == psystem_guid);
2102 }
2103
2104 static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
2105                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
2106                                 struct mlx5e_tc_flow *flow,
2107                                 struct netlink_ext_ack *extack)
2108 {
2109         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
2110         const struct tc_action *a;
2111         LIST_HEAD(actions);
2112         u32 action = 0;
2113         int err, i;
2114
2115         if (!tcf_exts_has_actions(exts))
2116                 return -EINVAL;
2117
2118         attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
2119
2120         tcf_exts_for_each_action(i, a, exts) {
2121                 if (is_tcf_gact_shot(a)) {
2122                         action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
2123                         if (MLX5_CAP_FLOWTABLE(priv->mdev,
2124                                                flow_table_properties_nic_receive.flow_counter))
2125                                 action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
2126                         continue;
2127                 }
2128
2129                 if (is_tcf_pedit(a)) {
2130                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_KERNEL,
2131                                                     parse_attr, extack);
2132                         if (err)
2133                                 return err;
2134
2135                         action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR |
2136                                   MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2137                         continue;
2138                 }
2139
2140                 if (is_tcf_csum(a)) {
2141                         if (csum_offload_supported(priv, action,
2142                                                    tcf_csum_update_flags(a),
2143                                                    extack))
2144                                 continue;
2145
2146                         return -EOPNOTSUPP;
2147                 }
2148
2149                 if (is_tcf_mirred_egress_redirect(a)) {
2150                         struct net_device *peer_dev = tcf_mirred_dev(a);
2151
2152                         if (priv->netdev->netdev_ops == peer_dev->netdev_ops &&
2153                             same_hw_devs(priv, netdev_priv(peer_dev))) {
2154                                 parse_attr->mirred_ifindex = peer_dev->ifindex;
2155                                 flow->flags |= MLX5E_TC_FLOW_HAIRPIN;
2156                                 action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2157                                           MLX5_FLOW_CONTEXT_ACTION_COUNT;
2158                         } else {
2159                                 NL_SET_ERR_MSG_MOD(extack,
2160                                                    "device is not on same HW, can't offload");
2161                                 netdev_warn(priv->netdev, "device %s not on same HW, can't offload\n",
2162                                             peer_dev->name);
2163                                 return -EINVAL;
2164                         }
2165                         continue;
2166                 }
2167
2168                 if (is_tcf_skbedit_mark(a)) {
2169                         u32 mark = tcf_skbedit_mark(a);
2170
2171                         if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
2172                                 NL_SET_ERR_MSG_MOD(extack,
2173                                                    "Bad flow mark - only 16 bit is supported");
2174                                 return -EINVAL;
2175                         }
2176
2177                         attr->flow_tag = mark;
2178                         action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2179                         continue;
2180                 }
2181
2182                 return -EINVAL;
2183         }
2184
2185         attr->action = action;
2186         if (!actions_match_supported(priv, exts, parse_attr, flow, extack))
2187                 return -EOPNOTSUPP;
2188
2189         return 0;
2190 }
2191
2192 static inline int cmp_encap_info(struct ip_tunnel_key *a,
2193                                  struct ip_tunnel_key *b)
2194 {
2195         return memcmp(a, b, sizeof(*a));
2196 }
2197
2198 static inline int hash_encap_info(struct ip_tunnel_key *key)
2199 {
2200         return jhash(key, sizeof(*key), 0);
2201 }
2202
2203 static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
2204                                    struct net_device *mirred_dev,
2205                                    struct net_device **out_dev,
2206                                    struct flowi4 *fl4,
2207                                    struct neighbour **out_n,
2208                                    u8 *out_ttl)
2209 {
2210         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2211         struct mlx5e_rep_priv *uplink_rpriv;
2212         struct rtable *rt;
2213         struct neighbour *n = NULL;
2214
2215 #if IS_ENABLED(CONFIG_INET)
2216         int ret;
2217
2218         rt = ip_route_output_key(dev_net(mirred_dev), fl4);
2219         ret = PTR_ERR_OR_ZERO(rt);
2220         if (ret)
2221                 return ret;
2222 #else
2223         return -EOPNOTSUPP;
2224 #endif
2225         uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
2226         /* if the egress device isn't on the same HW e-switch, we use the uplink */
2227         if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
2228                 *out_dev = uplink_rpriv->netdev;
2229         else
2230                 *out_dev = rt->dst.dev;
2231
2232         if (!(*out_ttl))
2233                 *out_ttl = ip4_dst_hoplimit(&rt->dst);
2234         n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
2235         ip_rt_put(rt);
2236         if (!n)
2237                 return -ENOMEM;
2238
2239         *out_n = n;
2240         return 0;
2241 }
2242
2243 static bool is_merged_eswitch_dev(struct mlx5e_priv *priv,
2244                                   struct net_device *peer_netdev)
2245 {
2246         struct mlx5e_priv *peer_priv;
2247
2248         peer_priv = netdev_priv(peer_netdev);
2249
2250         return (MLX5_CAP_ESW(priv->mdev, merged_eswitch) &&
2251                 (priv->netdev->netdev_ops == peer_netdev->netdev_ops) &&
2252                 same_hw_devs(priv, peer_priv) &&
2253                 MLX5_VPORT_MANAGER(peer_priv->mdev) &&
2254                 (peer_priv->mdev->priv.eswitch->mode == SRIOV_OFFLOADS));
2255 }
2256
2257 static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
2258                                    struct net_device *mirred_dev,
2259                                    struct net_device **out_dev,
2260                                    struct flowi6 *fl6,
2261                                    struct neighbour **out_n,
2262                                    u8 *out_ttl)
2263 {
2264         struct neighbour *n = NULL;
2265         struct dst_entry *dst;
2266
2267 #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
2268         struct mlx5e_rep_priv *uplink_rpriv;
2269         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2270         int ret;
2271
2272         ret = ipv6_stub->ipv6_dst_lookup(dev_net(mirred_dev), NULL, &dst,
2273                                          fl6);
2274         if (ret < 0)
2275                 return ret;
2276
2277         if (!(*out_ttl))
2278                 *out_ttl = ip6_dst_hoplimit(dst);
2279
2280         uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
2281         /* if the egress device isn't on the same HW e-switch, we use the uplink */
2282         if (!switchdev_port_same_parent_id(priv->netdev, dst->dev))
2283                 *out_dev = uplink_rpriv->netdev;
2284         else
2285                 *out_dev = dst->dev;
2286 #else
2287         return -EOPNOTSUPP;
2288 #endif
2289
2290         n = dst_neigh_lookup(dst, &fl6->daddr);
2291         dst_release(dst);
2292         if (!n)
2293                 return -ENOMEM;
2294
2295         *out_n = n;
2296         return 0;
2297 }
2298
2299 static void gen_vxlan_header_ipv4(struct net_device *out_dev,
2300                                   char buf[], int encap_size,
2301                                   unsigned char h_dest[ETH_ALEN],
2302                                   u8 tos, u8 ttl,
2303                                   __be32 daddr,
2304                                   __be32 saddr,
2305                                   __be16 udp_dst_port,
2306                                   __be32 vx_vni)
2307 {
2308         struct ethhdr *eth = (struct ethhdr *)buf;
2309         struct iphdr  *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
2310         struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
2311         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
2312
2313         memset(buf, 0, encap_size);
2314
2315         ether_addr_copy(eth->h_dest, h_dest);
2316         ether_addr_copy(eth->h_source, out_dev->dev_addr);
2317         eth->h_proto = htons(ETH_P_IP);
2318
2319         ip->daddr = daddr;
2320         ip->saddr = saddr;
2321
2322         ip->tos = tos;
2323         ip->ttl = ttl;
2324         ip->protocol = IPPROTO_UDP;
2325         ip->version = 0x4;
2326         ip->ihl = 0x5;
2327
2328         udp->dest = udp_dst_port;
2329         vxh->vx_flags = VXLAN_HF_VNI;
2330         vxh->vx_vni = vxlan_vni_field(vx_vni);
2331 }
2332
2333 static void gen_vxlan_header_ipv6(struct net_device *out_dev,
2334                                   char buf[], int encap_size,
2335                                   unsigned char h_dest[ETH_ALEN],
2336                                   u8 tos, u8 ttl,
2337                                   struct in6_addr *daddr,
2338                                   struct in6_addr *saddr,
2339                                   __be16 udp_dst_port,
2340                                   __be32 vx_vni)
2341 {
2342         struct ethhdr *eth = (struct ethhdr *)buf;
2343         struct ipv6hdr *ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr));
2344         struct udphdr *udp = (struct udphdr *)((char *)ip6h + sizeof(struct ipv6hdr));
2345         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
2346
2347         memset(buf, 0, encap_size);
2348
2349         ether_addr_copy(eth->h_dest, h_dest);
2350         ether_addr_copy(eth->h_source, out_dev->dev_addr);
2351         eth->h_proto = htons(ETH_P_IPV6);
2352
2353         ip6_flow_hdr(ip6h, tos, 0);
2354         /* the HW fills up ipv6 payload len */
2355         ip6h->nexthdr     = IPPROTO_UDP;
2356         ip6h->hop_limit   = ttl;
2357         ip6h->daddr       = *daddr;
2358         ip6h->saddr       = *saddr;
2359
2360         udp->dest = udp_dst_port;
2361         vxh->vx_flags = VXLAN_HF_VNI;
2362         vxh->vx_vni = vxlan_vni_field(vx_vni);
2363 }
2364
2365 static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
2366                                           struct net_device *mirred_dev,
2367                                           struct mlx5e_encap_entry *e)
2368 {
2369         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
2370         int ipv4_encap_size = ETH_HLEN + sizeof(struct iphdr) + VXLAN_HLEN;
2371         struct ip_tunnel_key *tun_key = &e->tun_info.key;
2372         struct net_device *out_dev;
2373         struct neighbour *n = NULL;
2374         struct flowi4 fl4 = {};
2375         u8 nud_state, tos, ttl;
2376         char *encap_header;
2377         int err;
2378
2379         if (max_encap_size < ipv4_encap_size) {
2380                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
2381                                ipv4_encap_size, max_encap_size);
2382                 return -EOPNOTSUPP;
2383         }
2384
2385         encap_header = kzalloc(ipv4_encap_size, GFP_KERNEL);
2386         if (!encap_header)
2387                 return -ENOMEM;
2388
2389         switch (e->tunnel_type) {
2390         case MLX5_REFORMAT_TYPE_L2_TO_VXLAN:
2391                 fl4.flowi4_proto = IPPROTO_UDP;
2392                 fl4.fl4_dport = tun_key->tp_dst;
2393                 break;
2394         default:
2395                 err = -EOPNOTSUPP;
2396                 goto free_encap;
2397         }
2398
2399         tos = tun_key->tos;
2400         ttl = tun_key->ttl;
2401
2402         fl4.flowi4_tos = tun_key->tos;
2403         fl4.daddr = tun_key->u.ipv4.dst;
2404         fl4.saddr = tun_key->u.ipv4.src;
2405
2406         err = mlx5e_route_lookup_ipv4(priv, mirred_dev, &out_dev,
2407                                       &fl4, &n, &ttl);
2408         if (err)
2409                 goto free_encap;
2410
2411         /* used by mlx5e_detach_encap to lookup a neigh hash table
2412          * entry in the neigh hash table when a user deletes a rule
2413          */
2414         e->m_neigh.dev = n->dev;
2415         e->m_neigh.family = n->ops->family;
2416         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
2417         e->out_dev = out_dev;
2418
2419         /* It's importent to add the neigh to the hash table before checking
2420          * the neigh validity state. So if we'll get a notification, in case the
2421          * neigh changes it's validity state, we would find the relevant neigh
2422          * in the hash.
2423          */
2424         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
2425         if (err)
2426                 goto free_encap;
2427
2428         read_lock_bh(&n->lock);
2429         nud_state = n->nud_state;
2430         ether_addr_copy(e->h_dest, n->ha);
2431         read_unlock_bh(&n->lock);
2432
2433         switch (e->tunnel_type) {
2434         case MLX5_REFORMAT_TYPE_L2_TO_VXLAN:
2435                 gen_vxlan_header_ipv4(out_dev, encap_header,
2436                                       ipv4_encap_size, e->h_dest, tos, ttl,
2437                                       fl4.daddr,
2438                                       fl4.saddr, tun_key->tp_dst,
2439                                       tunnel_id_to_key32(tun_key->tun_id));
2440                 break;
2441         default:
2442                 err = -EOPNOTSUPP;
2443                 goto destroy_neigh_entry;
2444         }
2445         e->encap_size = ipv4_encap_size;
2446         e->encap_header = encap_header;
2447
2448         if (!(nud_state & NUD_VALID)) {
2449                 neigh_event_send(n, NULL);
2450                 err = -EAGAIN;
2451                 goto out;
2452         }
2453
2454         err = mlx5_packet_reformat_alloc(priv->mdev, e->tunnel_type,
2455                                          ipv4_encap_size, encap_header,
2456                                          MLX5_FLOW_NAMESPACE_FDB,
2457                                          &e->encap_id);
2458         if (err)
2459                 goto destroy_neigh_entry;
2460
2461         e->flags |= MLX5_ENCAP_ENTRY_VALID;
2462         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
2463         neigh_release(n);
2464         return err;
2465
2466 destroy_neigh_entry:
2467         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
2468 free_encap:
2469         kfree(encap_header);
2470 out:
2471         if (n)
2472                 neigh_release(n);
2473         return err;
2474 }
2475
2476 static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
2477                                           struct net_device *mirred_dev,
2478                                           struct mlx5e_encap_entry *e)
2479 {
2480         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
2481         int ipv6_encap_size = ETH_HLEN + sizeof(struct ipv6hdr) + VXLAN_HLEN;
2482         struct ip_tunnel_key *tun_key = &e->tun_info.key;
2483         struct net_device *out_dev;
2484         struct neighbour *n = NULL;
2485         struct flowi6 fl6 = {};
2486         u8 nud_state, tos, ttl;
2487         char *encap_header;
2488         int err;
2489
2490         if (max_encap_size < ipv6_encap_size) {
2491                 mlx5_core_warn(priv->mdev, "encap size %d too big, max supported is %d\n",
2492                                ipv6_encap_size, max_encap_size);
2493                 return -EOPNOTSUPP;
2494         }
2495
2496         encap_header = kzalloc(ipv6_encap_size, GFP_KERNEL);
2497         if (!encap_header)
2498                 return -ENOMEM;
2499
2500         switch (e->tunnel_type) {
2501         case MLX5_REFORMAT_TYPE_L2_TO_VXLAN:
2502                 fl6.flowi6_proto = IPPROTO_UDP;
2503                 fl6.fl6_dport = tun_key->tp_dst;
2504                 break;
2505         default:
2506                 err = -EOPNOTSUPP;
2507                 goto free_encap;
2508         }
2509
2510         tos = tun_key->tos;
2511         ttl = tun_key->ttl;
2512
2513         fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label);
2514         fl6.daddr = tun_key->u.ipv6.dst;
2515         fl6.saddr = tun_key->u.ipv6.src;
2516
2517         err = mlx5e_route_lookup_ipv6(priv, mirred_dev, &out_dev,
2518                                       &fl6, &n, &ttl);
2519         if (err)
2520                 goto free_encap;
2521
2522         /* used by mlx5e_detach_encap to lookup a neigh hash table
2523          * entry in the neigh hash table when a user deletes a rule
2524          */
2525         e->m_neigh.dev = n->dev;
2526         e->m_neigh.family = n->ops->family;
2527         memcpy(&e->m_neigh.dst_ip, n->primary_key, n->tbl->key_len);
2528         e->out_dev = out_dev;
2529
2530         /* It's importent to add the neigh to the hash table before checking
2531          * the neigh validity state. So if we'll get a notification, in case the
2532          * neigh changes it's validity state, we would find the relevant neigh
2533          * in the hash.
2534          */
2535         err = mlx5e_rep_encap_entry_attach(netdev_priv(out_dev), e);
2536         if (err)
2537                 goto free_encap;
2538
2539         read_lock_bh(&n->lock);
2540         nud_state = n->nud_state;
2541         ether_addr_copy(e->h_dest, n->ha);
2542         read_unlock_bh(&n->lock);
2543
2544         switch (e->tunnel_type) {
2545         case MLX5_REFORMAT_TYPE_L2_TO_VXLAN:
2546                 gen_vxlan_header_ipv6(out_dev, encap_header,
2547                                       ipv6_encap_size, e->h_dest, tos, ttl,
2548                                       &fl6.daddr,
2549                                       &fl6.saddr, tun_key->tp_dst,
2550                                       tunnel_id_to_key32(tun_key->tun_id));
2551                 break;
2552         default:
2553                 err = -EOPNOTSUPP;
2554                 goto destroy_neigh_entry;
2555         }
2556
2557         e->encap_size = ipv6_encap_size;
2558         e->encap_header = encap_header;
2559
2560         if (!(nud_state & NUD_VALID)) {
2561                 neigh_event_send(n, NULL);
2562                 err = -EAGAIN;
2563                 goto out;
2564         }
2565
2566         err = mlx5_packet_reformat_alloc(priv->mdev, e->tunnel_type,
2567                                          ipv6_encap_size, encap_header,
2568                                          MLX5_FLOW_NAMESPACE_FDB,
2569                                          &e->encap_id);
2570         if (err)
2571                 goto destroy_neigh_entry;
2572
2573         e->flags |= MLX5_ENCAP_ENTRY_VALID;
2574         mlx5e_rep_queue_neigh_stats_work(netdev_priv(out_dev));
2575         neigh_release(n);
2576         return err;
2577
2578 destroy_neigh_entry:
2579         mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
2580 free_encap:
2581         kfree(encap_header);
2582 out:
2583         if (n)
2584                 neigh_release(n);
2585         return err;
2586 }
2587
2588 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
2589                               struct ip_tunnel_info *tun_info,
2590                               struct net_device *mirred_dev,
2591                               struct net_device **encap_dev,
2592                               struct mlx5e_tc_flow *flow,
2593                               struct netlink_ext_ack *extack)
2594 {
2595         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2596         unsigned short family = ip_tunnel_info_af(tun_info);
2597         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
2598         struct ip_tunnel_key *key = &tun_info->key;
2599         struct mlx5e_encap_entry *e;
2600         int tunnel_type, err = 0;
2601         uintptr_t hash_key;
2602         bool found = false;
2603
2604         /* udp dst port must be set */
2605         if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
2606                 goto vxlan_encap_offload_err;
2607
2608         /* setting udp src port isn't supported */
2609         if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
2610 vxlan_encap_offload_err:
2611                 NL_SET_ERR_MSG_MOD(extack,
2612                                    "must set udp dst port and not set udp src port");
2613                 netdev_warn(priv->netdev,
2614                             "must set udp dst port and not set udp src port\n");
2615                 return -EOPNOTSUPP;
2616         }
2617
2618         if (mlx5_vxlan_lookup_port(priv->mdev->vxlan, be16_to_cpu(key->tp_dst)) &&
2619             MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
2620                 tunnel_type = MLX5_REFORMAT_TYPE_L2_TO_VXLAN;
2621         } else {
2622                 NL_SET_ERR_MSG_MOD(extack,
2623                                    "port isn't an offloaded vxlan udp dport");
2624                 netdev_warn(priv->netdev,
2625                             "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
2626                 return -EOPNOTSUPP;
2627         }
2628
2629         hash_key = hash_encap_info(key);
2630
2631         hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
2632                                    encap_hlist, hash_key) {
2633                 if (!cmp_encap_info(&e->tun_info.key, key)) {
2634                         found = true;
2635                         break;
2636                 }
2637         }
2638
2639         /* must verify if encap is valid or not */
2640         if (found)
2641                 goto attach_flow;
2642
2643         e = kzalloc(sizeof(*e), GFP_KERNEL);
2644         if (!e)
2645                 return -ENOMEM;
2646
2647         e->tun_info = *tun_info;
2648         e->tunnel_type = tunnel_type;
2649         INIT_LIST_HEAD(&e->flows);
2650
2651         if (family == AF_INET)
2652                 err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e);
2653         else if (family == AF_INET6)
2654                 err = mlx5e_create_encap_header_ipv6(priv, mirred_dev, e);
2655
2656         if (err && err != -EAGAIN)
2657                 goto out_err;
2658
2659         hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
2660
2661 attach_flow:
2662         list_add(&flow->encap, &e->flows);
2663         *encap_dev = e->out_dev;
2664         if (e->flags & MLX5_ENCAP_ENTRY_VALID)
2665                 attr->encap_id = e->encap_id;
2666         else
2667                 err = -EAGAIN;
2668
2669         return err;
2670
2671 out_err:
2672         kfree(e);
2673         return err;
2674 }
2675
2676 static int parse_tc_vlan_action(struct mlx5e_priv *priv,
2677                                 const struct tc_action *a,
2678                                 struct mlx5_esw_flow_attr *attr,
2679                                 u32 *action)
2680 {
2681         u8 vlan_idx = attr->total_vlan;
2682
2683         if (vlan_idx >= MLX5_FS_VLAN_DEPTH)
2684                 return -EOPNOTSUPP;
2685
2686         if (tcf_vlan_action(a) == TCA_VLAN_ACT_POP) {
2687                 if (vlan_idx) {
2688                         if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
2689                                                                  MLX5_FS_VLAN_DEPTH))
2690                                 return -EOPNOTSUPP;
2691
2692                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP_2;
2693                 } else {
2694                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
2695                 }
2696         } else if (tcf_vlan_action(a) == TCA_VLAN_ACT_PUSH) {
2697                 attr->vlan_vid[vlan_idx] = tcf_vlan_push_vid(a);
2698                 attr->vlan_prio[vlan_idx] = tcf_vlan_push_prio(a);
2699                 attr->vlan_proto[vlan_idx] = tcf_vlan_push_proto(a);
2700                 if (!attr->vlan_proto[vlan_idx])
2701                         attr->vlan_proto[vlan_idx] = htons(ETH_P_8021Q);
2702
2703                 if (vlan_idx) {
2704                         if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
2705                                                                  MLX5_FS_VLAN_DEPTH))
2706                                 return -EOPNOTSUPP;
2707
2708                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH_2;
2709                 } else {
2710                         if (!mlx5_eswitch_vlan_actions_supported(priv->mdev, 1) &&
2711                             (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q) ||
2712                              tcf_vlan_push_prio(a)))
2713                                 return -EOPNOTSUPP;
2714
2715                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
2716                 }
2717         } else { /* action is TCA_VLAN_ACT_MODIFY */
2718                 return -EOPNOTSUPP;
2719         }
2720
2721         attr->total_vlan = vlan_idx + 1;
2722
2723         return 0;
2724 }
2725
2726 static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
2727                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
2728                                 struct mlx5e_tc_flow *flow,
2729                                 struct netlink_ext_ack *extack)
2730 {
2731         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
2732         struct mlx5e_rep_priv *rpriv = priv->ppriv;
2733         struct ip_tunnel_info *info = NULL;
2734         const struct tc_action *a;
2735         LIST_HEAD(actions);
2736         bool encap = false;
2737         u32 action = 0;
2738         int err, i;
2739
2740         if (!tcf_exts_has_actions(exts))
2741                 return -EINVAL;
2742
2743         attr->in_rep = rpriv->rep;
2744         attr->in_mdev = priv->mdev;
2745
2746         tcf_exts_for_each_action(i, a, exts) {
2747                 if (is_tcf_gact_shot(a)) {
2748                         action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
2749                                   MLX5_FLOW_CONTEXT_ACTION_COUNT;
2750                         continue;
2751                 }
2752
2753                 if (is_tcf_pedit(a)) {
2754                         err = parse_tc_pedit_action(priv, a, MLX5_FLOW_NAMESPACE_FDB,
2755                                                     parse_attr, extack);
2756                         if (err)
2757                                 return err;
2758
2759                         action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
2760                         attr->mirror_count = attr->out_count;
2761                         continue;
2762                 }
2763
2764                 if (is_tcf_csum(a)) {
2765                         if (csum_offload_supported(priv, action,
2766                                                    tcf_csum_update_flags(a),
2767                                                    extack))
2768                                 continue;
2769
2770                         return -EOPNOTSUPP;
2771                 }
2772
2773                 if (is_tcf_mirred_egress_redirect(a) || is_tcf_mirred_egress_mirror(a)) {
2774                         struct mlx5e_priv *out_priv;
2775                         struct net_device *out_dev;
2776
2777                         out_dev = tcf_mirred_dev(a);
2778
2779                         if (attr->out_count >= MLX5_MAX_FLOW_FWD_VPORTS) {
2780                                 NL_SET_ERR_MSG_MOD(extack,
2781                                                    "can't support more output ports, can't offload forwarding");
2782                                 pr_err("can't support more than %d output ports, can't offload forwarding\n",
2783                                        attr->out_count);
2784                                 return -EOPNOTSUPP;
2785                         }
2786
2787                         if (switchdev_port_same_parent_id(priv->netdev,
2788                                                           out_dev) ||
2789                             is_merged_eswitch_dev(priv, out_dev)) {
2790                                 action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2791                                           MLX5_FLOW_CONTEXT_ACTION_COUNT;
2792                                 out_priv = netdev_priv(out_dev);
2793                                 rpriv = out_priv->ppriv;
2794                                 attr->out_rep[attr->out_count] = rpriv->rep;
2795                                 attr->out_mdev[attr->out_count++] = out_priv->mdev;
2796                         } else if (encap) {
2797                                 parse_attr->mirred_ifindex = out_dev->ifindex;
2798                                 parse_attr->tun_info = *info;
2799                                 attr->parse_attr = parse_attr;
2800                                 action |= MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT |
2801                                           MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2802                                           MLX5_FLOW_CONTEXT_ACTION_COUNT;
2803                                 /* attr->out_rep is resolved when we handle encap */
2804                         } else {
2805                                 NL_SET_ERR_MSG_MOD(extack,
2806                                                    "devices are not on same switch HW, can't offload forwarding");
2807                                 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
2808                                        priv->netdev->name, out_dev->name);
2809                                 return -EINVAL;
2810                         }
2811                         continue;
2812                 }
2813
2814                 if (is_tcf_tunnel_set(a)) {
2815                         info = tcf_tunnel_info(a);
2816                         if (info)
2817                                 encap = true;
2818                         else
2819                                 return -EOPNOTSUPP;
2820                         attr->mirror_count = attr->out_count;
2821                         continue;
2822                 }
2823
2824                 if (is_tcf_vlan(a)) {
2825                         err = parse_tc_vlan_action(priv, a, attr, &action);
2826
2827                         if (err)
2828                                 return err;
2829
2830                         attr->mirror_count = attr->out_count;
2831                         continue;
2832                 }
2833
2834                 if (is_tcf_tunnel_release(a)) {
2835                         action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
2836                         continue;
2837                 }
2838
2839                 return -EINVAL;
2840         }
2841
2842         attr->action = action;
2843         if (!actions_match_supported(priv, exts, parse_attr, flow, extack))
2844                 return -EOPNOTSUPP;
2845
2846         if (attr->out_count > 1 && !mlx5_esw_has_fwd_fdb(priv->mdev)) {
2847                 NL_SET_ERR_MSG_MOD(extack,
2848                                    "current firmware doesn't support split rule for port mirroring");
2849                 netdev_warn_once(priv->netdev, "current firmware doesn't support split rule for port mirroring\n");
2850                 return -EOPNOTSUPP;
2851         }
2852
2853         return 0;
2854 }
2855
2856 static void get_flags(int flags, u8 *flow_flags)
2857 {
2858         u8 __flow_flags = 0;
2859
2860         if (flags & MLX5E_TC_INGRESS)
2861                 __flow_flags |= MLX5E_TC_FLOW_INGRESS;
2862         if (flags & MLX5E_TC_EGRESS)
2863                 __flow_flags |= MLX5E_TC_FLOW_EGRESS;
2864
2865         *flow_flags = __flow_flags;
2866 }
2867
2868 static const struct rhashtable_params tc_ht_params = {
2869         .head_offset = offsetof(struct mlx5e_tc_flow, node),
2870         .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
2871         .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
2872         .automatic_shrinking = true,
2873 };
2874
2875 static struct rhashtable *get_tc_ht(struct mlx5e_priv *priv)
2876 {
2877         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2878         struct mlx5e_rep_priv *uplink_rpriv;
2879
2880         if (MLX5_VPORT_MANAGER(priv->mdev) && esw->mode == SRIOV_OFFLOADS) {
2881                 uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
2882                 return &uplink_rpriv->tc_ht;
2883         } else
2884                 return &priv->fs.tc.ht;
2885 }
2886
2887 int mlx5e_configure_flower(struct mlx5e_priv *priv,
2888                            struct tc_cls_flower_offload *f, int flags)
2889 {
2890         struct netlink_ext_ack *extack = f->common.extack;
2891         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2892         struct mlx5e_tc_flow_parse_attr *parse_attr;
2893         struct rhashtable *tc_ht = get_tc_ht(priv);
2894         struct mlx5e_tc_flow *flow;
2895         int attr_size, err = 0;
2896         u8 flow_flags = 0;
2897
2898         get_flags(flags, &flow_flags);
2899
2900         flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params);
2901         if (flow) {
2902                 NL_SET_ERR_MSG_MOD(extack,
2903                                    "flow cookie already exists, ignoring");
2904                 netdev_warn_once(priv->netdev, "flow cookie %lx already exists, ignoring\n", f->cookie);
2905                 return 0;
2906         }
2907
2908         if (esw && esw->mode == SRIOV_OFFLOADS) {
2909                 flow_flags |= MLX5E_TC_FLOW_ESWITCH;
2910                 attr_size  = sizeof(struct mlx5_esw_flow_attr);
2911         } else {
2912                 flow_flags |= MLX5E_TC_FLOW_NIC;
2913                 attr_size  = sizeof(struct mlx5_nic_flow_attr);
2914         }
2915
2916         flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
2917         parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
2918         if (!parse_attr || !flow) {
2919                 err = -ENOMEM;
2920                 goto err_free;
2921         }
2922
2923         flow->cookie = f->cookie;
2924         flow->flags = flow_flags;
2925         flow->priv = priv;
2926
2927         err = parse_cls_flower(priv, flow, &parse_attr->spec, f);
2928         if (err < 0)
2929                 goto err_free;
2930
2931         if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
2932                 err = parse_tc_fdb_actions(priv, f->exts, parse_attr, flow,
2933                                            extack);
2934                 if (err < 0)
2935                         goto err_free;
2936                 flow->rule[0] = mlx5e_tc_add_fdb_flow(priv, parse_attr, flow,
2937                                                       extack);
2938         } else {
2939                 err = parse_tc_nic_actions(priv, f->exts, parse_attr, flow,
2940                                            extack);
2941                 if (err < 0)
2942                         goto err_free;
2943                 flow->rule[0] = mlx5e_tc_add_nic_flow(priv, parse_attr, flow,
2944                                                       extack);
2945         }
2946
2947         if (IS_ERR(flow->rule[0])) {
2948                 err = PTR_ERR(flow->rule[0]);
2949                 if (err != -EAGAIN)
2950                         goto err_free;
2951         }
2952
2953         if (err != -EAGAIN)
2954                 flow->flags |= MLX5E_TC_FLOW_OFFLOADED;
2955
2956         if (!(flow->flags & MLX5E_TC_FLOW_ESWITCH) ||
2957             !(flow->esw_attr->action &
2958               MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT))
2959                 kvfree(parse_attr);
2960
2961         err = rhashtable_insert_fast(tc_ht, &flow->node, tc_ht_params);
2962         if (err) {
2963                 mlx5e_tc_del_flow(priv, flow);
2964                 kfree(flow);
2965         }
2966
2967         return err;
2968
2969 err_free:
2970         kvfree(parse_attr);
2971         kfree(flow);
2972         return err;
2973 }
2974
2975 #define DIRECTION_MASK (MLX5E_TC_INGRESS | MLX5E_TC_EGRESS)
2976 #define FLOW_DIRECTION_MASK (MLX5E_TC_FLOW_INGRESS | MLX5E_TC_FLOW_EGRESS)
2977
2978 static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags)
2979 {
2980         if ((flow->flags & FLOW_DIRECTION_MASK) == (flags & DIRECTION_MASK))
2981                 return true;
2982
2983         return false;
2984 }
2985
2986 int mlx5e_delete_flower(struct mlx5e_priv *priv,
2987                         struct tc_cls_flower_offload *f, int flags)
2988 {
2989         struct rhashtable *tc_ht = get_tc_ht(priv);
2990         struct mlx5e_tc_flow *flow;
2991
2992         flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params);
2993         if (!flow || !same_flow_direction(flow, flags))
2994                 return -EINVAL;
2995
2996         rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params);
2997
2998         mlx5e_tc_del_flow(priv, flow);
2999
3000         kfree(flow);
3001
3002         return 0;
3003 }
3004
3005 int mlx5e_stats_flower(struct mlx5e_priv *priv,
3006                        struct tc_cls_flower_offload *f, int flags)
3007 {
3008         struct rhashtable *tc_ht = get_tc_ht(priv);
3009         struct mlx5e_tc_flow *flow;
3010         struct mlx5_fc *counter;
3011         u64 bytes;
3012         u64 packets;
3013         u64 lastuse;
3014
3015         flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params);
3016         if (!flow || !same_flow_direction(flow, flags))
3017                 return -EINVAL;
3018
3019         if (!(flow->flags & MLX5E_TC_FLOW_OFFLOADED))
3020                 return 0;
3021
3022         counter = mlx5_flow_rule_counter(flow->rule[0]);
3023         if (!counter)
3024                 return 0;
3025
3026         mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
3027
3028         tcf_exts_stats_update(f->exts, bytes, packets, lastuse);
3029
3030         return 0;
3031 }
3032
3033 static void mlx5e_tc_hairpin_update_dead_peer(struct mlx5e_priv *priv,
3034                                               struct mlx5e_priv *peer_priv)
3035 {
3036         struct mlx5_core_dev *peer_mdev = peer_priv->mdev;
3037         struct mlx5e_hairpin_entry *hpe;
3038         u16 peer_vhca_id;
3039         int bkt;
3040
3041         if (!same_hw_devs(priv, peer_priv))
3042                 return;
3043
3044         peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
3045
3046         hash_for_each(priv->fs.tc.hairpin_tbl, bkt, hpe, hairpin_hlist) {
3047                 if (hpe->peer_vhca_id == peer_vhca_id)
3048                         hpe->hp->pair->peer_gone = true;
3049         }
3050 }
3051
3052 static int mlx5e_tc_netdev_event(struct notifier_block *this,
3053                                  unsigned long event, void *ptr)
3054 {
3055         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
3056         struct mlx5e_flow_steering *fs;
3057         struct mlx5e_priv *peer_priv;
3058         struct mlx5e_tc_table *tc;
3059         struct mlx5e_priv *priv;
3060
3061         if (ndev->netdev_ops != &mlx5e_netdev_ops ||
3062             event != NETDEV_UNREGISTER ||
3063             ndev->reg_state == NETREG_REGISTERED)
3064                 return NOTIFY_DONE;
3065
3066         tc = container_of(this, struct mlx5e_tc_table, netdevice_nb);
3067         fs = container_of(tc, struct mlx5e_flow_steering, tc);
3068         priv = container_of(fs, struct mlx5e_priv, fs);
3069         peer_priv = netdev_priv(ndev);
3070         if (priv == peer_priv ||
3071             !(priv->netdev->features & NETIF_F_HW_TC))
3072                 return NOTIFY_DONE;
3073
3074         mlx5e_tc_hairpin_update_dead_peer(priv, peer_priv);
3075
3076         return NOTIFY_DONE;
3077 }
3078
3079 int mlx5e_tc_nic_init(struct mlx5e_priv *priv)
3080 {
3081         struct mlx5e_tc_table *tc = &priv->fs.tc;
3082         int err;
3083
3084         hash_init(tc->mod_hdr_tbl);
3085         hash_init(tc->hairpin_tbl);
3086
3087         err = rhashtable_init(&tc->ht, &tc_ht_params);
3088         if (err)
3089                 return err;
3090
3091         tc->netdevice_nb.notifier_call = mlx5e_tc_netdev_event;
3092         if (register_netdevice_notifier(&tc->netdevice_nb)) {
3093                 tc->netdevice_nb.notifier_call = NULL;
3094                 mlx5_core_warn(priv->mdev, "Failed to register netdev notifier\n");
3095         }
3096
3097         return err;
3098 }
3099
3100 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
3101 {
3102         struct mlx5e_tc_flow *flow = ptr;
3103         struct mlx5e_priv *priv = flow->priv;
3104
3105         mlx5e_tc_del_flow(priv, flow);
3106         kfree(flow);
3107 }
3108
3109 void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv)
3110 {
3111         struct mlx5e_tc_table *tc = &priv->fs.tc;
3112
3113         if (tc->netdevice_nb.notifier_call)
3114                 unregister_netdevice_notifier(&tc->netdevice_nb);
3115
3116         rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, NULL);
3117
3118         if (!IS_ERR_OR_NULL(tc->t)) {
3119                 mlx5_destroy_flow_table(tc->t);
3120                 tc->t = NULL;
3121         }
3122 }
3123
3124 int mlx5e_tc_esw_init(struct rhashtable *tc_ht)
3125 {
3126         return rhashtable_init(tc_ht, &tc_ht_params);
3127 }
3128
3129 void mlx5e_tc_esw_cleanup(struct rhashtable *tc_ht)
3130 {
3131         rhashtable_free_and_destroy(tc_ht, _mlx5e_tc_del_flow, NULL);
3132 }
3133
3134 int mlx5e_tc_num_filters(struct mlx5e_priv *priv)
3135 {
3136         struct rhashtable *tc_ht = get_tc_ht(priv);
3137
3138         return atomic_read(&tc_ht->nelems);
3139 }