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 <linux/refcount.h>
  42 #include <linux/completion.h>
  43 #include <net/tc_act/tc_mirred.h>
  44 #include <net/tc_act/tc_vlan.h>
  45 #include <net/tc_act/tc_tunnel_key.h>
  46 #include <net/tc_act/tc_pedit.h>
  47 #include <net/tc_act/tc_csum.h>
  48 #include <net/arp.h>
  49 #include <net/ipv6_stubs.h>
  50 #include "en.h"
  51 #include "en_rep.h"
  52 #include "en_tc.h"
  53 #include "eswitch.h"
  54 #include "fs_core.h"
  55 #include "en/port.h"
  56 #include "en/tc_tun.h"
  57 #include "lib/devcom.h"
  58 #include "lib/geneve.h"
  59 #include "diag/en_tc_tracepoint.h"
  60
  61 struct mlx5_nic_flow_attr {
  62         u32 action;
  63         u32 flow_tag;
  64         struct mlx5_modify_hdr *modify_hdr;
  65         u32 hairpin_tirn;
  66         u8 match_level;
  67         struct mlx5_flow_table  *hairpin_ft;
  68         struct mlx5_fc          *counter;
  69 };
  70
  71 #define MLX5E_TC_FLOW_BASE (MLX5E_TC_FLAG_LAST_EXPORTED_BIT + 1)
  72
  73 enum {
  74         MLX5E_TC_FLOW_FLAG_INGRESS      = MLX5E_TC_FLAG_INGRESS_BIT,
  75         MLX5E_TC_FLOW_FLAG_EGRESS       = MLX5E_TC_FLAG_EGRESS_BIT,
  76         MLX5E_TC_FLOW_FLAG_ESWITCH      = MLX5E_TC_FLAG_ESW_OFFLOAD_BIT,
  77         MLX5E_TC_FLOW_FLAG_NIC          = MLX5E_TC_FLAG_NIC_OFFLOAD_BIT,
  78         MLX5E_TC_FLOW_FLAG_OFFLOADED    = MLX5E_TC_FLOW_BASE,
  79         MLX5E_TC_FLOW_FLAG_HAIRPIN      = MLX5E_TC_FLOW_BASE + 1,
  80         MLX5E_TC_FLOW_FLAG_HAIRPIN_RSS  = MLX5E_TC_FLOW_BASE + 2,
  81         MLX5E_TC_FLOW_FLAG_SLOW         = MLX5E_TC_FLOW_BASE + 3,
  82         MLX5E_TC_FLOW_FLAG_DUP          = MLX5E_TC_FLOW_BASE + 4,
  83         MLX5E_TC_FLOW_FLAG_NOT_READY    = MLX5E_TC_FLOW_BASE + 5,
  84         MLX5E_TC_FLOW_FLAG_DELETED      = MLX5E_TC_FLOW_BASE + 6,
  85 };
  86
  87 #define MLX5E_TC_MAX_SPLITS 1
  88
  89 /* Helper struct for accessing a struct containing list_head array.
  90  * Containing struct
  91  *   |- Helper array
  92  *      [0] Helper item 0
  93  *          |- list_head item 0
  94  *          |- index (0)
  95  *      [1] Helper item 1
  96  *          |- list_head item 1
  97  *          |- index (1)
  98  * To access the containing struct from one of the list_head items:
  99  * 1. Get the helper item from the list_head item using
 100  *    helper item =
 101  *        container_of(list_head item, helper struct type, list_head field)
 102  * 2. Get the contining struct from the helper item and its index in the array:
 103  *    containing struct =
 104  *        container_of(helper item, containing struct type, helper field[index])
 105  */
 106 struct encap_flow_item {
 107         struct mlx5e_encap_entry *e; /* attached encap instance */
 108         struct list_head list;
 109         int index;
 110 };
 111
 112 struct mlx5e_tc_flow {
 113         struct rhash_head       node;
 114         struct mlx5e_priv       *priv;
 115         u64                     cookie;
 116         unsigned long           flags;
 117         struct mlx5_flow_handle *rule[MLX5E_TC_MAX_SPLITS + 1];
 118         /* Flow can be associated with multiple encap IDs.
 119          * The number of encaps is bounded by the number of supported
 120          * destinations.
 121          */
 122         struct encap_flow_item encaps[MLX5_MAX_FLOW_FWD_VPORTS];
 123         struct mlx5e_tc_flow    *peer_flow;
 124         struct mlx5e_mod_hdr_entry *mh; /* attached mod header instance */
 125         struct list_head        mod_hdr; /* flows sharing the same mod hdr ID */
 126         struct mlx5e_hairpin_entry *hpe; /* attached hairpin instance */
 127         struct list_head        hairpin; /* flows sharing the same hairpin */
 128         struct list_head        peer;    /* flows with peer flow */
 129         struct list_head        unready; /* flows not ready to be offloaded (e.g due to missing route) */
 130         int                     tmp_efi_index;
 131         struct list_head        tmp_list; /* temporary flow list used by neigh update */
 132         refcount_t              refcnt;
 133         struct rcu_head         rcu_head;
 134         struct completion       init_done;
 135         union {
 136                 struct mlx5_esw_flow_attr esw_attr[0];
 137                 struct mlx5_nic_flow_attr nic_attr[0];
 138         };
 139 };
 140
 141 struct mlx5e_tc_flow_parse_attr {
 142         const struct ip_tunnel_info *tun_info[MLX5_MAX_FLOW_FWD_VPORTS];
 143         struct net_device *filter_dev;
 144         struct mlx5_flow_spec spec;
 145         int num_mod_hdr_actions;
 146         int max_mod_hdr_actions;
 147         void *mod_hdr_actions;
 148         int mirred_ifindex[MLX5_MAX_FLOW_FWD_VPORTS];
 149 };
 150
 151 #define MLX5E_TC_TABLE_NUM_GROUPS 4
 152 #define MLX5E_TC_TABLE_MAX_GROUP_SIZE BIT(16)
 153
 154 struct mlx5e_hairpin {
 155         struct mlx5_hairpin *pair;
 156
 157         struct mlx5_core_dev *func_mdev;
 158         struct mlx5e_priv *func_priv;
 159         u32 tdn;
 160         u32 tirn;
 161
 162         int num_channels;
 163         struct mlx5e_rqt indir_rqt;
 164         u32 indir_tirn[MLX5E_NUM_INDIR_TIRS];
 165         struct mlx5e_ttc_table ttc;
 166 };
 167
 168 struct mlx5e_hairpin_entry {
 169         /* a node of a hash table which keeps all the  hairpin entries */
 170         struct hlist_node hairpin_hlist;
 171
 172         /* protects flows list */
 173         spinlock_t flows_lock;
 174         /* flows sharing the same hairpin */
 175         struct list_head flows;
 176         /* hpe's that were not fully initialized when dead peer update event
 177          * function traversed them.
 178          */
 179         struct list_head dead_peer_wait_list;
 180
 181         u16 peer_vhca_id;
 182         u8 prio;
 183         struct mlx5e_hairpin *hp;
 184         refcount_t refcnt;
 185         struct completion res_ready;
 186 };
 187
 188 struct mod_hdr_key {
 189         int num_actions;
 190         void *actions;
 191 };
 192
 193 struct mlx5e_mod_hdr_entry {
 194         /* a node of a hash table which keeps all the mod_hdr entries */
 195         struct hlist_node mod_hdr_hlist;
 196
 197         /* protects flows list */
 198         spinlock_t flows_lock;
 199         /* flows sharing the same mod_hdr entry */
 200         struct list_head flows;
 201
 202         struct mod_hdr_key key;
 203
 204         struct mlx5_modify_hdr *modify_hdr;
 205
 206         refcount_t refcnt;
 207         struct completion res_ready;
 208         int compl_result;
 209 };
 210
 211 #define MLX5_MH_ACT_SZ MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto)
 212
 213 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
 214                               struct mlx5e_tc_flow *flow);
 215
 216 static struct mlx5e_tc_flow *mlx5e_flow_get(struct mlx5e_tc_flow *flow)
 217 {
 218         if (!flow || !refcount_inc_not_zero(&flow->refcnt))
 219                 return ERR_PTR(-EINVAL);
 220         return flow;
 221 }
 222
 223 static void mlx5e_flow_put(struct mlx5e_priv *priv,
 224                            struct mlx5e_tc_flow *flow)
 225 {
 226         if (refcount_dec_and_test(&flow->refcnt)) {
 227                 mlx5e_tc_del_flow(priv, flow);
 228                 kfree_rcu(flow, rcu_head);
 229         }
 230 }
 231
 232 static void __flow_flag_set(struct mlx5e_tc_flow *flow, unsigned long flag)
 233 {
 234         /* Complete all memory stores before setting bit. */
 235         smp_mb__before_atomic();
 236         set_bit(flag, &flow->flags);
 237 }
 238
 239 #define flow_flag_set(flow, flag) __flow_flag_set(flow, MLX5E_TC_FLOW_FLAG_##flag)
 240
 241 static bool __flow_flag_test_and_set(struct mlx5e_tc_flow *flow,
 242                                      unsigned long flag)
 243 {
 244         /* test_and_set_bit() provides all necessary barriers */
 245         return test_and_set_bit(flag, &flow->flags);
 246 }
 247
 248 #define flow_flag_test_and_set(flow, flag)                      \
 249         __flow_flag_test_and_set(flow,                          \
 250                                  MLX5E_TC_FLOW_FLAG_##flag)
 251
 252 static void __flow_flag_clear(struct mlx5e_tc_flow *flow, unsigned long flag)
 253 {
 254         /* Complete all memory stores before clearing bit. */
 255         smp_mb__before_atomic();
 256         clear_bit(flag, &flow->flags);
 257 }
 258
 259 #define flow_flag_clear(flow, flag) __flow_flag_clear(flow, \
 260                                                       MLX5E_TC_FLOW_FLAG_##flag)
 261
 262 static bool __flow_flag_test(struct mlx5e_tc_flow *flow, unsigned long flag)
 263 {
 264         bool ret = test_bit(flag, &flow->flags);
 265
 266         /* Read fields of flow structure only after checking flags. */
 267         smp_mb__after_atomic();
 268         return ret;
 269 }
 270
 271 #define flow_flag_test(flow, flag) __flow_flag_test(flow, \
 272                                                     MLX5E_TC_FLOW_FLAG_##flag)
 273
 274 static bool mlx5e_is_eswitch_flow(struct mlx5e_tc_flow *flow)
 275 {
 276         return flow_flag_test(flow, ESWITCH);
 277 }
 278
 279 static bool mlx5e_is_offloaded_flow(struct mlx5e_tc_flow *flow)
 280 {
 281         return flow_flag_test(flow, OFFLOADED);
 282 }
 283
 284 static inline u32 hash_mod_hdr_info(struct mod_hdr_key *key)
 285 {
 286         return jhash(key->actions,
 287                      key->num_actions * MLX5_MH_ACT_SZ, 0);
 288 }
 289
 290 static inline int cmp_mod_hdr_info(struct mod_hdr_key *a,
 291                                    struct mod_hdr_key *b)
 292 {
 293         if (a->num_actions != b->num_actions)
 294                 return 1;
 295
 296         return memcmp(a->actions, b->actions, a->num_actions * MLX5_MH_ACT_SZ);
 297 }
 298
 299 static struct mod_hdr_tbl *
 300 get_mod_hdr_table(struct mlx5e_priv *priv, int namespace)
 301 {
 302         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 303
 304         return namespace == MLX5_FLOW_NAMESPACE_FDB ? &esw->offloads.mod_hdr :
 305                 &priv->fs.tc.mod_hdr;
 306 }
 307
 308 static struct mlx5e_mod_hdr_entry *
 309 mlx5e_mod_hdr_get(struct mod_hdr_tbl *tbl, struct mod_hdr_key *key, u32 hash_key)
 310 {
 311         struct mlx5e_mod_hdr_entry *mh, *found = NULL;
 312
 313         hash_for_each_possible(tbl->hlist, mh, mod_hdr_hlist, hash_key) {
 314                 if (!cmp_mod_hdr_info(&mh->key, key)) {
 315                         refcount_inc(&mh->refcnt);
 316                         found = mh;
 317                         break;
 318                 }
 319         }
 320
 321         return found;
 322 }
 323
 324 static void mlx5e_mod_hdr_put(struct mlx5e_priv *priv,
 325                               struct mlx5e_mod_hdr_entry *mh,
 326                               int namespace)
 327 {
 328         struct mod_hdr_tbl *tbl = get_mod_hdr_table(priv, namespace);
 329
 330         if (!refcount_dec_and_mutex_lock(&mh->refcnt, &tbl->lock))
 331                 return;
 332         hash_del(&mh->mod_hdr_hlist);
 333         mutex_unlock(&tbl->lock);
 334
 335         WARN_ON(!list_empty(&mh->flows));
 336         if (mh->compl_result > 0)
 337                 mlx5_modify_header_dealloc(priv->mdev, mh->modify_hdr);
 338
 339         kfree(mh);
 340 }
 341
 342 static int get_flow_name_space(struct mlx5e_tc_flow *flow)
 343 {
 344         return mlx5e_is_eswitch_flow(flow) ?
 345                 MLX5_FLOW_NAMESPACE_FDB : MLX5_FLOW_NAMESPACE_KERNEL;
 346 }
 347 static int mlx5e_attach_mod_hdr(struct mlx5e_priv *priv,
 348                                 struct mlx5e_tc_flow *flow,
 349                                 struct mlx5e_tc_flow_parse_attr *parse_attr)
 350 {
 351         int num_actions, actions_size, namespace, err;
 352         struct mlx5e_mod_hdr_entry *mh;
 353         struct mod_hdr_tbl *tbl;
 354         struct mod_hdr_key key;
 355         u32 hash_key;
 356
 357         num_actions  = parse_attr->num_mod_hdr_actions;
 358         actions_size = MLX5_MH_ACT_SZ * num_actions;
 359
 360         key.actions = parse_attr->mod_hdr_actions;
 361         key.num_actions = num_actions;
 362
 363         hash_key = hash_mod_hdr_info(&key);
 364
 365         namespace = get_flow_name_space(flow);
 366         tbl = get_mod_hdr_table(priv, namespace);
 367
 368         mutex_lock(&tbl->lock);
 369         mh = mlx5e_mod_hdr_get(tbl, &key, hash_key);
 370         if (mh) {
 371                 mutex_unlock(&tbl->lock);
 372                 wait_for_completion(&mh->res_ready);
 373
 374                 if (mh->compl_result < 0) {
 375                         err = -EREMOTEIO;
 376                         goto attach_header_err;
 377                 }
 378                 goto attach_flow;
 379         }
 380
 381         mh = kzalloc(sizeof(*mh) + actions_size, GFP_KERNEL);
 382         if (!mh) {
 383                 mutex_unlock(&tbl->lock);
 384                 return -ENOMEM;
 385         }
 386
 387         mh->key.actions = (void *)mh + sizeof(*mh);
 388         memcpy(mh->key.actions, key.actions, actions_size);
 389         mh->key.num_actions = num_actions;
 390         spin_lock_init(&mh->flows_lock);
 391         INIT_LIST_HEAD(&mh->flows);
 392         refcount_set(&mh->refcnt, 1);
 393         init_completion(&mh->res_ready);
 394
 395         hash_add(tbl->hlist, &mh->mod_hdr_hlist, hash_key);
 396         mutex_unlock(&tbl->lock);
 397
 398         mh->modify_hdr = mlx5_modify_header_alloc(priv->mdev, namespace,
 399                                                   mh->key.num_actions,
 400                                                   mh->key.actions);
 401         if (IS_ERR(mh->modify_hdr)) {
 402                 err = PTR_ERR(mh->modify_hdr);
 403                 mh->compl_result = err;
 404                 goto alloc_header_err;
 405         }
 406         mh->compl_result = 1;
 407         complete_all(&mh->res_ready);
 408
 409 attach_flow:
 410         flow->mh = mh;
 411         spin_lock(&mh->flows_lock);
 412         list_add(&flow->mod_hdr, &mh->flows);
 413         spin_unlock(&mh->flows_lock);
 414         if (mlx5e_is_eswitch_flow(flow))
 415                 flow->esw_attr->modify_hdr = mh->modify_hdr;
 416         else
 417                 flow->nic_attr->modify_hdr = mh->modify_hdr;
 418
 419         return 0;
 420
 421 alloc_header_err:
 422         complete_all(&mh->res_ready);
 423 attach_header_err:
 424         mlx5e_mod_hdr_put(priv, mh, namespace);
 425         return err;
 426 }
 427
 428 static void mlx5e_detach_mod_hdr(struct mlx5e_priv *priv,
 429                                  struct mlx5e_tc_flow *flow)
 430 {
 431         /* flow wasn't fully initialized */
 432         if (!flow->mh)
 433                 return;
 434
 435         spin_lock(&flow->mh->flows_lock);
 436         list_del(&flow->mod_hdr);
 437         spin_unlock(&flow->mh->flows_lock);
 438
 439         mlx5e_mod_hdr_put(priv, flow->mh, get_flow_name_space(flow));
 440         flow->mh = NULL;
 441 }
 442
 443 static
 444 struct mlx5_core_dev *mlx5e_hairpin_get_mdev(struct net *net, int ifindex)
 445 {
 446         struct net_device *netdev;
 447         struct mlx5e_priv *priv;
 448
 449         netdev = __dev_get_by_index(net, ifindex);
 450         priv = netdev_priv(netdev);
 451         return priv->mdev;
 452 }
 453
 454 static int mlx5e_hairpin_create_transport(struct mlx5e_hairpin *hp)
 455 {
 456         u32 in[MLX5_ST_SZ_DW(create_tir_in)] = {0};
 457         void *tirc;
 458         int err;
 459
 460         err = mlx5_core_alloc_transport_domain(hp->func_mdev, &hp->tdn);
 461         if (err)
 462                 goto alloc_tdn_err;
 463
 464         tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
 465
 466         MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_DIRECT);
 467         MLX5_SET(tirc, tirc, inline_rqn, hp->pair->rqn[0]);
 468         MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
 469
 470         err = mlx5_core_create_tir(hp->func_mdev, in, MLX5_ST_SZ_BYTES(create_tir_in), &hp->tirn);
 471         if (err)
 472                 goto create_tir_err;
 473
 474         return 0;
 475
 476 create_tir_err:
 477         mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
 478 alloc_tdn_err:
 479         return err;
 480 }
 481
 482 static void mlx5e_hairpin_destroy_transport(struct mlx5e_hairpin *hp)
 483 {
 484         mlx5_core_destroy_tir(hp->func_mdev, hp->tirn);
 485         mlx5_core_dealloc_transport_domain(hp->func_mdev, hp->tdn);
 486 }
 487
 488 static void mlx5e_hairpin_fill_rqt_rqns(struct mlx5e_hairpin *hp, void *rqtc)
 489 {
 490         u32 indirection_rqt[MLX5E_INDIR_RQT_SIZE], rqn;
 491         struct mlx5e_priv *priv = hp->func_priv;
 492         int i, ix, sz = MLX5E_INDIR_RQT_SIZE;
 493
 494         mlx5e_build_default_indir_rqt(indirection_rqt, sz,
 495                                       hp->num_channels);
 496
 497         for (i = 0; i < sz; i++) {
 498                 ix = i;
 499                 if (priv->rss_params.hfunc == ETH_RSS_HASH_XOR)
 500                         ix = mlx5e_bits_invert(i, ilog2(sz));
 501                 ix = indirection_rqt[ix];
 502                 rqn = hp->pair->rqn[ix];
 503                 MLX5_SET(rqtc, rqtc, rq_num[i], rqn);
 504         }
 505 }
 506
 507 static int mlx5e_hairpin_create_indirect_rqt(struct mlx5e_hairpin *hp)
 508 {
 509         int inlen, err, sz = MLX5E_INDIR_RQT_SIZE;
 510         struct mlx5e_priv *priv = hp->func_priv;
 511         struct mlx5_core_dev *mdev = priv->mdev;
 512         void *rqtc;
 513         u32 *in;
 514
 515         inlen = MLX5_ST_SZ_BYTES(create_rqt_in) + sizeof(u32) * sz;
 516         in = kvzalloc(inlen, GFP_KERNEL);
 517         if (!in)
 518                 return -ENOMEM;
 519
 520         rqtc = MLX5_ADDR_OF(create_rqt_in, in, rqt_context);
 521
 522         MLX5_SET(rqtc, rqtc, rqt_actual_size, sz);
 523         MLX5_SET(rqtc, rqtc, rqt_max_size, sz);
 524
 525         mlx5e_hairpin_fill_rqt_rqns(hp, rqtc);
 526
 527         err = mlx5_core_create_rqt(mdev, in, inlen, &hp->indir_rqt.rqtn);
 528         if (!err)
 529                 hp->indir_rqt.enabled = true;
 530
 531         kvfree(in);
 532         return err;
 533 }
 534
 535 static int mlx5e_hairpin_create_indirect_tirs(struct mlx5e_hairpin *hp)
 536 {
 537         struct mlx5e_priv *priv = hp->func_priv;
 538         u32 in[MLX5_ST_SZ_DW(create_tir_in)];
 539         int tt, i, err;
 540         void *tirc;
 541
 542         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++) {
 543                 struct mlx5e_tirc_config ttconfig = mlx5e_tirc_get_default_config(tt);
 544
 545                 memset(in, 0, MLX5_ST_SZ_BYTES(create_tir_in));
 546                 tirc = MLX5_ADDR_OF(create_tir_in, in, ctx);
 547
 548                 MLX5_SET(tirc, tirc, transport_domain, hp->tdn);
 549                 MLX5_SET(tirc, tirc, disp_type, MLX5_TIRC_DISP_TYPE_INDIRECT);
 550                 MLX5_SET(tirc, tirc, indirect_table, hp->indir_rqt.rqtn);
 551                 mlx5e_build_indir_tir_ctx_hash(&priv->rss_params, &ttconfig, tirc, false);
 552
 553                 err = mlx5_core_create_tir(hp->func_mdev, in,
 554                                            MLX5_ST_SZ_BYTES(create_tir_in), &hp->indir_tirn[tt]);
 555                 if (err) {
 556                         mlx5_core_warn(hp->func_mdev, "create indirect tirs failed, %d\n", err);
 557                         goto err_destroy_tirs;
 558                 }
 559         }
 560         return 0;
 561
 562 err_destroy_tirs:
 563         for (i = 0; i < tt; i++)
 564                 mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[i]);
 565         return err;
 566 }
 567
 568 static void mlx5e_hairpin_destroy_indirect_tirs(struct mlx5e_hairpin *hp)
 569 {
 570         int tt;
 571
 572         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
 573                 mlx5_core_destroy_tir(hp->func_mdev, hp->indir_tirn[tt]);
 574 }
 575
 576 static void mlx5e_hairpin_set_ttc_params(struct mlx5e_hairpin *hp,
 577                                          struct ttc_params *ttc_params)
 578 {
 579         struct mlx5_flow_table_attr *ft_attr = &ttc_params->ft_attr;
 580         int tt;
 581
 582         memset(ttc_params, 0, sizeof(*ttc_params));
 583
 584         ttc_params->any_tt_tirn = hp->tirn;
 585
 586         for (tt = 0; tt < MLX5E_NUM_INDIR_TIRS; tt++)
 587                 ttc_params->indir_tirn[tt] = hp->indir_tirn[tt];
 588
 589         ft_attr->max_fte = MLX5E_NUM_TT;
 590         ft_attr->level = MLX5E_TC_TTC_FT_LEVEL;
 591         ft_attr->prio = MLX5E_TC_PRIO;
 592 }
 593
 594 static int mlx5e_hairpin_rss_init(struct mlx5e_hairpin *hp)
 595 {
 596         struct mlx5e_priv *priv = hp->func_priv;
 597         struct ttc_params ttc_params;
 598         int err;
 599
 600         err = mlx5e_hairpin_create_indirect_rqt(hp);
 601         if (err)
 602                 return err;
 603
 604         err = mlx5e_hairpin_create_indirect_tirs(hp);
 605         if (err)
 606                 goto err_create_indirect_tirs;
 607
 608         mlx5e_hairpin_set_ttc_params(hp, &ttc_params);
 609         err = mlx5e_create_ttc_table(priv, &ttc_params, &hp->ttc);
 610         if (err)
 611                 goto err_create_ttc_table;
 612
 613         netdev_dbg(priv->netdev, "add hairpin: using %d channels rss ttc table id %x\n",
 614                    hp->num_channels, hp->ttc.ft.t->id);
 615
 616         return 0;
 617
 618 err_create_ttc_table:
 619         mlx5e_hairpin_destroy_indirect_tirs(hp);
 620 err_create_indirect_tirs:
 621         mlx5e_destroy_rqt(priv, &hp->indir_rqt);
 622
 623         return err;
 624 }
 625
 626 static void mlx5e_hairpin_rss_cleanup(struct mlx5e_hairpin *hp)
 627 {
 628         struct mlx5e_priv *priv = hp->func_priv;
 629
 630         mlx5e_destroy_ttc_table(priv, &hp->ttc);
 631         mlx5e_hairpin_destroy_indirect_tirs(hp);
 632         mlx5e_destroy_rqt(priv, &hp->indir_rqt);
 633 }
 634
 635 static struct mlx5e_hairpin *
 636 mlx5e_hairpin_create(struct mlx5e_priv *priv, struct mlx5_hairpin_params *params,
 637                      int peer_ifindex)
 638 {
 639         struct mlx5_core_dev *func_mdev, *peer_mdev;
 640         struct mlx5e_hairpin *hp;
 641         struct mlx5_hairpin *pair;
 642         int err;
 643
 644         hp = kzalloc(sizeof(*hp), GFP_KERNEL);
 645         if (!hp)
 646                 return ERR_PTR(-ENOMEM);
 647
 648         func_mdev = priv->mdev;
 649         peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
 650
 651         pair = mlx5_core_hairpin_create(func_mdev, peer_mdev, params);
 652         if (IS_ERR(pair)) {
 653                 err = PTR_ERR(pair);
 654                 goto create_pair_err;
 655         }
 656         hp->pair = pair;
 657         hp->func_mdev = func_mdev;
 658         hp->func_priv = priv;
 659         hp->num_channels = params->num_channels;
 660
 661         err = mlx5e_hairpin_create_transport(hp);
 662         if (err)
 663                 goto create_transport_err;
 664
 665         if (hp->num_channels > 1) {
 666                 err = mlx5e_hairpin_rss_init(hp);
 667                 if (err)
 668                         goto rss_init_err;
 669         }
 670
 671         return hp;
 672
 673 rss_init_err:
 674         mlx5e_hairpin_destroy_transport(hp);
 675 create_transport_err:
 676         mlx5_core_hairpin_destroy(hp->pair);
 677 create_pair_err:
 678         kfree(hp);
 679         return ERR_PTR(err);
 680 }
 681
 682 static void mlx5e_hairpin_destroy(struct mlx5e_hairpin *hp)
 683 {
 684         if (hp->num_channels > 1)
 685                 mlx5e_hairpin_rss_cleanup(hp);
 686         mlx5e_hairpin_destroy_transport(hp);
 687         mlx5_core_hairpin_destroy(hp->pair);
 688         kvfree(hp);
 689 }
 690
 691 static inline u32 hash_hairpin_info(u16 peer_vhca_id, u8 prio)
 692 {
 693         return (peer_vhca_id << 16 | prio);
 694 }
 695
 696 static struct mlx5e_hairpin_entry *mlx5e_hairpin_get(struct mlx5e_priv *priv,
 697                                                      u16 peer_vhca_id, u8 prio)
 698 {
 699         struct mlx5e_hairpin_entry *hpe;
 700         u32 hash_key = hash_hairpin_info(peer_vhca_id, prio);
 701
 702         hash_for_each_possible(priv->fs.tc.hairpin_tbl, hpe,
 703                                hairpin_hlist, hash_key) {
 704                 if (hpe->peer_vhca_id == peer_vhca_id && hpe->prio == prio) {
 705                         refcount_inc(&hpe->refcnt);
 706                         return hpe;
 707                 }
 708         }
 709
 710         return NULL;
 711 }
 712
 713 static void mlx5e_hairpin_put(struct mlx5e_priv *priv,
 714                               struct mlx5e_hairpin_entry *hpe)
 715 {
 716         /* no more hairpin flows for us, release the hairpin pair */
 717         if (!refcount_dec_and_mutex_lock(&hpe->refcnt, &priv->fs.tc.hairpin_tbl_lock))
 718                 return;
 719         hash_del(&hpe->hairpin_hlist);
 720         mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
 721
 722         if (!IS_ERR_OR_NULL(hpe->hp)) {
 723                 netdev_dbg(priv->netdev, "del hairpin: peer %s\n",
 724                            dev_name(hpe->hp->pair->peer_mdev->device));
 725
 726                 mlx5e_hairpin_destroy(hpe->hp);
 727         }
 728
 729         WARN_ON(!list_empty(&hpe->flows));
 730         kfree(hpe);
 731 }
 732
 733 #define UNKNOWN_MATCH_PRIO 8
 734
 735 static int mlx5e_hairpin_get_prio(struct mlx5e_priv *priv,
 736                                   struct mlx5_flow_spec *spec, u8 *match_prio,
 737                                   struct netlink_ext_ack *extack)
 738 {
 739         void *headers_c, *headers_v;
 740         u8 prio_val, prio_mask = 0;
 741         bool vlan_present;
 742
 743 #ifdef CONFIG_MLX5_CORE_EN_DCB
 744         if (priv->dcbx_dp.trust_state != MLX5_QPTS_TRUST_PCP) {
 745                 NL_SET_ERR_MSG_MOD(extack,
 746                                    "only PCP trust state supported for hairpin");
 747                 return -EOPNOTSUPP;
 748         }
 749 #endif
 750         headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, outer_headers);
 751         headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
 752
 753         vlan_present = MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag);
 754         if (vlan_present) {
 755                 prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
 756                 prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
 757         }
 758
 759         if (!vlan_present || !prio_mask) {
 760                 prio_val = UNKNOWN_MATCH_PRIO;
 761         } else if (prio_mask != 0x7) {
 762                 NL_SET_ERR_MSG_MOD(extack,
 763                                    "masked priority match not supported for hairpin");
 764                 return -EOPNOTSUPP;
 765         }
 766
 767         *match_prio = prio_val;
 768         return 0;
 769 }
 770
 771 static int mlx5e_hairpin_flow_add(struct mlx5e_priv *priv,
 772                                   struct mlx5e_tc_flow *flow,
 773                                   struct mlx5e_tc_flow_parse_attr *parse_attr,
 774                                   struct netlink_ext_ack *extack)
 775 {
 776         int peer_ifindex = parse_attr->mirred_ifindex[0];
 777         struct mlx5_hairpin_params params;
 778         struct mlx5_core_dev *peer_mdev;
 779         struct mlx5e_hairpin_entry *hpe;
 780         struct mlx5e_hairpin *hp;
 781         u64 link_speed64;
 782         u32 link_speed;
 783         u8 match_prio;
 784         u16 peer_id;
 785         int err;
 786
 787         peer_mdev = mlx5e_hairpin_get_mdev(dev_net(priv->netdev), peer_ifindex);
 788         if (!MLX5_CAP_GEN(priv->mdev, hairpin) || !MLX5_CAP_GEN(peer_mdev, hairpin)) {
 789                 NL_SET_ERR_MSG_MOD(extack, "hairpin is not supported");
 790                 return -EOPNOTSUPP;
 791         }
 792
 793         peer_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
 794         err = mlx5e_hairpin_get_prio(priv, &parse_attr->spec, &match_prio,
 795                                      extack);
 796         if (err)
 797                 return err;
 798
 799         mutex_lock(&priv->fs.tc.hairpin_tbl_lock);
 800         hpe = mlx5e_hairpin_get(priv, peer_id, match_prio);
 801         if (hpe) {
 802                 mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
 803                 wait_for_completion(&hpe->res_ready);
 804
 805                 if (IS_ERR(hpe->hp)) {
 806                         err = -EREMOTEIO;
 807                         goto out_err;
 808                 }
 809                 goto attach_flow;
 810         }
 811
 812         hpe = kzalloc(sizeof(*hpe), GFP_KERNEL);
 813         if (!hpe) {
 814                 mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
 815                 return -ENOMEM;
 816         }
 817
 818         spin_lock_init(&hpe->flows_lock);
 819         INIT_LIST_HEAD(&hpe->flows);
 820         INIT_LIST_HEAD(&hpe->dead_peer_wait_list);
 821         hpe->peer_vhca_id = peer_id;
 822         hpe->prio = match_prio;
 823         refcount_set(&hpe->refcnt, 1);
 824         init_completion(&hpe->res_ready);
 825
 826         hash_add(priv->fs.tc.hairpin_tbl, &hpe->hairpin_hlist,
 827                  hash_hairpin_info(peer_id, match_prio));
 828         mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
 829
 830         params.log_data_size = 15;
 831         params.log_data_size = min_t(u8, params.log_data_size,
 832                                      MLX5_CAP_GEN(priv->mdev, log_max_hairpin_wq_data_sz));
 833         params.log_data_size = max_t(u8, params.log_data_size,
 834                                      MLX5_CAP_GEN(priv->mdev, log_min_hairpin_wq_data_sz));
 835
 836         params.log_num_packets = params.log_data_size -
 837                                  MLX5_MPWRQ_MIN_LOG_STRIDE_SZ(priv->mdev);
 838         params.log_num_packets = min_t(u8, params.log_num_packets,
 839                                        MLX5_CAP_GEN(priv->mdev, log_max_hairpin_num_packets));
 840
 841         params.q_counter = priv->q_counter;
 842         /* set hairpin pair per each 50Gbs share of the link */
 843         mlx5e_port_max_linkspeed(priv->mdev, &link_speed);
 844         link_speed = max_t(u32, link_speed, 50000);
 845         link_speed64 = link_speed;
 846         do_div(link_speed64, 50000);
 847         params.num_channels = link_speed64;
 848
 849         hp = mlx5e_hairpin_create(priv, &params, peer_ifindex);
 850         hpe->hp = hp;
 851         complete_all(&hpe->res_ready);
 852         if (IS_ERR(hp)) {
 853                 err = PTR_ERR(hp);
 854                 goto out_err;
 855         }
 856
 857         netdev_dbg(priv->netdev, "add hairpin: tirn %x rqn %x peer %s sqn %x prio %d (log) data %d packets %d\n",
 858                    hp->tirn, hp->pair->rqn[0],
 859                    dev_name(hp->pair->peer_mdev->device),
 860                    hp->pair->sqn[0], match_prio, params.log_data_size, params.log_num_packets);
 861
 862 attach_flow:
 863         if (hpe->hp->num_channels > 1) {
 864                 flow_flag_set(flow, HAIRPIN_RSS);
 865                 flow->nic_attr->hairpin_ft = hpe->hp->ttc.ft.t;
 866         } else {
 867                 flow->nic_attr->hairpin_tirn = hpe->hp->tirn;
 868         }
 869
 870         flow->hpe = hpe;
 871         spin_lock(&hpe->flows_lock);
 872         list_add(&flow->hairpin, &hpe->flows);
 873         spin_unlock(&hpe->flows_lock);
 874
 875         return 0;
 876
 877 out_err:
 878         mlx5e_hairpin_put(priv, hpe);
 879         return err;
 880 }
 881
 882 static void mlx5e_hairpin_flow_del(struct mlx5e_priv *priv,
 883                                    struct mlx5e_tc_flow *flow)
 884 {
 885         /* flow wasn't fully initialized */
 886         if (!flow->hpe)
 887                 return;
 888
 889         spin_lock(&flow->hpe->flows_lock);
 890         list_del(&flow->hairpin);
 891         spin_unlock(&flow->hpe->flows_lock);
 892
 893         mlx5e_hairpin_put(priv, flow->hpe);
 894         flow->hpe = NULL;
 895 }
 896
 897 static int
 898 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
 899                       struct mlx5e_tc_flow_parse_attr *parse_attr,
 900                       struct mlx5e_tc_flow *flow,
 901                       struct netlink_ext_ack *extack)
 902 {
 903         struct mlx5_flow_context *flow_context = &parse_attr->spec.flow_context;
 904         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
 905         struct mlx5_core_dev *dev = priv->mdev;
 906         struct mlx5_flow_destination dest[2] = {};
 907         struct mlx5_flow_act flow_act = {
 908                 .action = attr->action,
 909                 .flags    = FLOW_ACT_NO_APPEND,
 910         };
 911         struct mlx5_fc *counter = NULL;
 912         int err, dest_ix = 0;
 913
 914         flow_context->flags |= FLOW_CONTEXT_HAS_TAG;
 915         flow_context->flow_tag = attr->flow_tag;
 916
 917         if (flow_flag_test(flow, HAIRPIN)) {
 918                 err = mlx5e_hairpin_flow_add(priv, flow, parse_attr, extack);
 919                 if (err)
 920                         return err;
 921
 922                 if (flow_flag_test(flow, HAIRPIN_RSS)) {
 923                         dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
 924                         dest[dest_ix].ft = attr->hairpin_ft;
 925                 } else {
 926                         dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_TIR;
 927                         dest[dest_ix].tir_num = attr->hairpin_tirn;
 928                 }
 929                 dest_ix++;
 930         } else if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
 931                 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
 932                 dest[dest_ix].ft = priv->fs.vlan.ft.t;
 933                 dest_ix++;
 934         }
 935
 936         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
 937                 counter = mlx5_fc_create(dev, true);
 938                 if (IS_ERR(counter))
 939                         return PTR_ERR(counter);
 940
 941                 dest[dest_ix].type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
 942                 dest[dest_ix].counter_id = mlx5_fc_id(counter);
 943                 dest_ix++;
 944                 attr->counter = counter;
 945         }
 946
 947         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
 948                 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
 949                 flow_act.modify_hdr = attr->modify_hdr;
 950                 kfree(parse_attr->mod_hdr_actions);
 951                 if (err)
 952                         return err;
 953         }
 954
 955         mutex_lock(&priv->fs.tc.t_lock);
 956         if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
 957                 int tc_grp_size, tc_tbl_size;
 958                 u32 max_flow_counter;
 959
 960                 max_flow_counter = (MLX5_CAP_GEN(dev, max_flow_counter_31_16) << 16) |
 961                                     MLX5_CAP_GEN(dev, max_flow_counter_15_0);
 962
 963                 tc_grp_size = min_t(int, max_flow_counter, MLX5E_TC_TABLE_MAX_GROUP_SIZE);
 964
 965                 tc_tbl_size = min_t(int, tc_grp_size * MLX5E_TC_TABLE_NUM_GROUPS,
 966                                     BIT(MLX5_CAP_FLOWTABLE_NIC_RX(dev, log_max_ft_size)));
 967
 968                 priv->fs.tc.t =
 969                         mlx5_create_auto_grouped_flow_table(priv->fs.ns,
 970                                                             MLX5E_TC_PRIO,
 971                                                             tc_tbl_size,
 972                                                             MLX5E_TC_TABLE_NUM_GROUPS,
 973                                                             MLX5E_TC_FT_LEVEL, 0);
 974                 if (IS_ERR(priv->fs.tc.t)) {
 975                         mutex_unlock(&priv->fs.tc.t_lock);
 976                         NL_SET_ERR_MSG_MOD(extack,
 977                                            "Failed to create tc offload table\n");
 978                         netdev_err(priv->netdev,
 979                                    "Failed to create tc offload table\n");
 980                         return PTR_ERR(priv->fs.tc.t);
 981                 }
 982         }
 983
 984         if (attr->match_level != MLX5_MATCH_NONE)
 985                 parse_attr->spec.match_criteria_enable |= MLX5_MATCH_OUTER_HEADERS;
 986
 987         flow->rule[0] = mlx5_add_flow_rules(priv->fs.tc.t, &parse_attr->spec,
 988                                             &flow_act, dest, dest_ix);
 989         mutex_unlock(&priv->fs.tc.t_lock);
 990
 991         return PTR_ERR_OR_ZERO(flow->rule[0]);
 992 }
 993
 994 static void mlx5e_tc_del_nic_flow(struct mlx5e_priv *priv,
 995                                   struct mlx5e_tc_flow *flow)
 996 {
 997         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
 998         struct mlx5_fc *counter = NULL;
 999
1000         counter = attr->counter;
1001         if (!IS_ERR_OR_NULL(flow->rule[0]))
1002                 mlx5_del_flow_rules(flow->rule[0]);
1003         mlx5_fc_destroy(priv->mdev, counter);
1004
1005         mutex_lock(&priv->fs.tc.t_lock);
1006         if (!mlx5e_tc_num_filters(priv, MLX5_TC_FLAG(NIC_OFFLOAD)) && priv->fs.tc.t) {
1007                 mlx5_destroy_flow_table(priv->fs.tc.t);
1008                 priv->fs.tc.t = NULL;
1009         }
1010         mutex_unlock(&priv->fs.tc.t_lock);
1011
1012         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
1013                 mlx5e_detach_mod_hdr(priv, flow);
1014
1015         if (flow_flag_test(flow, HAIRPIN))
1016                 mlx5e_hairpin_flow_del(priv, flow);
1017 }
1018
1019 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
1020                                struct mlx5e_tc_flow *flow, int out_index);
1021
1022 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
1023                               struct mlx5e_tc_flow *flow,
1024                               struct net_device *mirred_dev,
1025                               int out_index,
1026                               struct netlink_ext_ack *extack,
1027                               struct net_device **encap_dev,
1028                               bool *encap_valid);
1029
1030 static struct mlx5_flow_handle *
1031 mlx5e_tc_offload_fdb_rules(struct mlx5_eswitch *esw,
1032                            struct mlx5e_tc_flow *flow,
1033                            struct mlx5_flow_spec *spec,
1034                            struct mlx5_esw_flow_attr *attr)
1035 {
1036         struct mlx5_flow_handle *rule;
1037
1038         rule = mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
1039         if (IS_ERR(rule))
1040                 return rule;
1041
1042         if (attr->split_count) {
1043                 flow->rule[1] = mlx5_eswitch_add_fwd_rule(esw, spec, attr);
1044                 if (IS_ERR(flow->rule[1])) {
1045                         mlx5_eswitch_del_offloaded_rule(esw, rule, attr);
1046                         return flow->rule[1];
1047                 }
1048         }
1049
1050         return rule;
1051 }
1052
1053 static void
1054 mlx5e_tc_unoffload_fdb_rules(struct mlx5_eswitch *esw,
1055                              struct mlx5e_tc_flow *flow,
1056                            struct mlx5_esw_flow_attr *attr)
1057 {
1058         flow_flag_clear(flow, OFFLOADED);
1059
1060         if (attr->split_count)
1061                 mlx5_eswitch_del_fwd_rule(esw, flow->rule[1], attr);
1062
1063         mlx5_eswitch_del_offloaded_rule(esw, flow->rule[0], attr);
1064 }
1065
1066 static struct mlx5_flow_handle *
1067 mlx5e_tc_offload_to_slow_path(struct mlx5_eswitch *esw,
1068                               struct mlx5e_tc_flow *flow,
1069                               struct mlx5_flow_spec *spec,
1070                               struct mlx5_esw_flow_attr *slow_attr)
1071 {
1072         struct mlx5_flow_handle *rule;
1073
1074         memcpy(slow_attr, flow->esw_attr, sizeof(*slow_attr));
1075         slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1076         slow_attr->split_count = 0;
1077         slow_attr->dest_chain = FDB_SLOW_PATH_CHAIN;
1078
1079         rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, slow_attr);
1080         if (!IS_ERR(rule))
1081                 flow_flag_set(flow, SLOW);
1082
1083         return rule;
1084 }
1085
1086 static void
1087 mlx5e_tc_unoffload_from_slow_path(struct mlx5_eswitch *esw,
1088                                   struct mlx5e_tc_flow *flow,
1089                                   struct mlx5_esw_flow_attr *slow_attr)
1090 {
1091         memcpy(slow_attr, flow->esw_attr, sizeof(*slow_attr));
1092         slow_attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
1093         slow_attr->split_count = 0;
1094         slow_attr->dest_chain = FDB_SLOW_PATH_CHAIN;
1095         mlx5e_tc_unoffload_fdb_rules(esw, flow, slow_attr);
1096         flow_flag_clear(flow, SLOW);
1097 }
1098
1099 /* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this
1100  * function.
1101  */
1102 static void unready_flow_add(struct mlx5e_tc_flow *flow,
1103                              struct list_head *unready_flows)
1104 {
1105         flow_flag_set(flow, NOT_READY);
1106         list_add_tail(&flow->unready, unready_flows);
1107 }
1108
1109 /* Caller must obtain uplink_priv->unready_flows_lock mutex before calling this
1110  * function.
1111  */
1112 static void unready_flow_del(struct mlx5e_tc_flow *flow)
1113 {
1114         list_del(&flow->unready);
1115         flow_flag_clear(flow, NOT_READY);
1116 }
1117
1118 static void add_unready_flow(struct mlx5e_tc_flow *flow)
1119 {
1120         struct mlx5_rep_uplink_priv *uplink_priv;
1121         struct mlx5e_rep_priv *rpriv;
1122         struct mlx5_eswitch *esw;
1123
1124         esw = flow->priv->mdev->priv.eswitch;
1125         rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
1126         uplink_priv = &rpriv->uplink_priv;
1127
1128         mutex_lock(&uplink_priv->unready_flows_lock);
1129         unready_flow_add(flow, &uplink_priv->unready_flows);
1130         mutex_unlock(&uplink_priv->unready_flows_lock);
1131 }
1132
1133 static void remove_unready_flow(struct mlx5e_tc_flow *flow)
1134 {
1135         struct mlx5_rep_uplink_priv *uplink_priv;
1136         struct mlx5e_rep_priv *rpriv;
1137         struct mlx5_eswitch *esw;
1138
1139         esw = flow->priv->mdev->priv.eswitch;
1140         rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
1141         uplink_priv = &rpriv->uplink_priv;
1142
1143         mutex_lock(&uplink_priv->unready_flows_lock);
1144         unready_flow_del(flow);
1145         mutex_unlock(&uplink_priv->unready_flows_lock);
1146 }
1147
1148 static int
1149 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
1150                       struct mlx5e_tc_flow *flow,
1151                       struct netlink_ext_ack *extack)
1152 {
1153         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1154         u32 max_chain = mlx5_eswitch_get_chain_range(esw);
1155         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1156         struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr;
1157         u16 max_prio = mlx5_eswitch_get_prio_range(esw);
1158         struct net_device *out_dev, *encap_dev = NULL;
1159         struct mlx5_fc *counter = NULL;
1160         struct mlx5e_rep_priv *rpriv;
1161         struct mlx5e_priv *out_priv;
1162         bool encap_valid = true;
1163         int err = 0;
1164         int out_index;
1165
1166         if (!mlx5_eswitch_prios_supported(esw) && attr->prio != 1) {
1167                 NL_SET_ERR_MSG(extack, "E-switch priorities unsupported, upgrade FW");
1168                 return -EOPNOTSUPP;
1169         }
1170
1171         if (attr->chain > max_chain) {
1172                 NL_SET_ERR_MSG(extack, "Requested chain is out of supported range");
1173                 return -EOPNOTSUPP;
1174         }
1175
1176         if (attr->prio > max_prio) {
1177                 NL_SET_ERR_MSG(extack, "Requested priority is out of supported range");
1178                 return -EOPNOTSUPP;
1179         }
1180
1181         for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++) {
1182                 int mirred_ifindex;
1183
1184                 if (!(attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP))
1185                         continue;
1186
1187                 mirred_ifindex = parse_attr->mirred_ifindex[out_index];
1188                 out_dev = __dev_get_by_index(dev_net(priv->netdev),
1189                                              mirred_ifindex);
1190                 err = mlx5e_attach_encap(priv, flow, out_dev, out_index,
1191                                          extack, &encap_dev, &encap_valid);
1192                 if (err)
1193                         return err;
1194
1195                 out_priv = netdev_priv(encap_dev);
1196                 rpriv = out_priv->ppriv;
1197                 attr->dests[out_index].rep = rpriv->rep;
1198                 attr->dests[out_index].mdev = out_priv->mdev;
1199         }
1200
1201         err = mlx5_eswitch_add_vlan_action(esw, attr);
1202         if (err)
1203                 return err;
1204
1205         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) {
1206                 err = mlx5e_attach_mod_hdr(priv, flow, parse_attr);
1207                 kfree(parse_attr->mod_hdr_actions);
1208                 if (err)
1209                         return err;
1210         }
1211
1212         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
1213                 counter = mlx5_fc_create(attr->counter_dev, true);
1214                 if (IS_ERR(counter))
1215                         return PTR_ERR(counter);
1216
1217                 attr->counter = counter;
1218         }
1219
1220         /* we get here if one of the following takes place:
1221          * (1) there's no error
1222          * (2) there's an encap action and we don't have valid neigh
1223          */
1224         if (!encap_valid) {
1225                 /* continue with goto slow path rule instead */
1226                 struct mlx5_esw_flow_attr slow_attr;
1227
1228                 flow->rule[0] = mlx5e_tc_offload_to_slow_path(esw, flow, &parse_attr->spec, &slow_attr);
1229         } else {
1230                 flow->rule[0] = mlx5e_tc_offload_fdb_rules(esw, flow, &parse_attr->spec, attr);
1231         }
1232
1233         if (IS_ERR(flow->rule[0]))
1234                 return PTR_ERR(flow->rule[0]);
1235         else
1236                 flow_flag_set(flow, OFFLOADED);
1237
1238         return 0;
1239 }
1240
1241 static bool mlx5_flow_has_geneve_opt(struct mlx5e_tc_flow *flow)
1242 {
1243         struct mlx5_flow_spec *spec = &flow->esw_attr->parse_attr->spec;
1244         void *headers_v = MLX5_ADDR_OF(fte_match_param,
1245                                        spec->match_value,
1246                                        misc_parameters_3);
1247         u32 geneve_tlv_opt_0_data = MLX5_GET(fte_match_set_misc3,
1248                                              headers_v,
1249                                              geneve_tlv_option_0_data);
1250
1251         return !!geneve_tlv_opt_0_data;
1252 }
1253
1254 static void mlx5e_tc_del_fdb_flow(struct mlx5e_priv *priv,
1255                                   struct mlx5e_tc_flow *flow)
1256 {
1257         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1258         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
1259         struct mlx5_esw_flow_attr slow_attr;
1260         int out_index;
1261
1262         if (flow_flag_test(flow, NOT_READY)) {
1263                 remove_unready_flow(flow);
1264                 kvfree(attr->parse_attr);
1265                 return;
1266         }
1267
1268         if (mlx5e_is_offloaded_flow(flow)) {
1269                 if (flow_flag_test(flow, SLOW))
1270                         mlx5e_tc_unoffload_from_slow_path(esw, flow, &slow_attr);
1271                 else
1272                         mlx5e_tc_unoffload_fdb_rules(esw, flow, attr);
1273         }
1274
1275         if (mlx5_flow_has_geneve_opt(flow))
1276                 mlx5_geneve_tlv_option_del(priv->mdev->geneve);
1277
1278         mlx5_eswitch_del_vlan_action(esw, attr);
1279
1280         for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++)
1281                 if (attr->dests[out_index].flags & MLX5_ESW_DEST_ENCAP) {
1282                         mlx5e_detach_encap(priv, flow, out_index);
1283                         kfree(attr->parse_attr->tun_info[out_index]);
1284                 }
1285         kvfree(attr->parse_attr);
1286
1287         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
1288                 mlx5e_detach_mod_hdr(priv, flow);
1289
1290         if (attr->action & MLX5_FLOW_CONTEXT_ACTION_COUNT)
1291                 mlx5_fc_destroy(attr->counter_dev, attr->counter);
1292 }
1293
1294 void mlx5e_tc_encap_flows_add(struct mlx5e_priv *priv,
1295                               struct mlx5e_encap_entry *e,
1296                               struct list_head *flow_list)
1297 {
1298         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1299         struct mlx5_esw_flow_attr slow_attr, *esw_attr;
1300         struct mlx5_flow_handle *rule;
1301         struct mlx5_flow_spec *spec;
1302         struct mlx5e_tc_flow *flow;
1303         int err;
1304
1305         e->pkt_reformat = mlx5_packet_reformat_alloc(priv->mdev,
1306                                                      e->reformat_type,
1307                                                      e->encap_size, e->encap_header,
1308                                                      MLX5_FLOW_NAMESPACE_FDB);
1309         if (IS_ERR(e->pkt_reformat)) {
1310                 mlx5_core_warn(priv->mdev, "Failed to offload cached encapsulation header, %lu\n",
1311                                PTR_ERR(e->pkt_reformat));
1312                 return;
1313         }
1314         e->flags |= MLX5_ENCAP_ENTRY_VALID;
1315         mlx5e_rep_queue_neigh_stats_work(priv);
1316
1317         list_for_each_entry(flow, flow_list, tmp_list) {
1318                 bool all_flow_encaps_valid = true;
1319                 int i;
1320
1321                 if (!mlx5e_is_offloaded_flow(flow))
1322                         continue;
1323                 esw_attr = flow->esw_attr;
1324                 spec = &esw_attr->parse_attr->spec;
1325
1326                 esw_attr->dests[flow->tmp_efi_index].pkt_reformat = e->pkt_reformat;
1327                 esw_attr->dests[flow->tmp_efi_index].flags |= MLX5_ESW_DEST_ENCAP_VALID;
1328                 /* Flow can be associated with multiple encap entries.
1329                  * Before offloading the flow verify that all of them have
1330                  * a valid neighbour.
1331                  */
1332                 for (i = 0; i < MLX5_MAX_FLOW_FWD_VPORTS; i++) {
1333                         if (!(esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP))
1334                                 continue;
1335                         if (!(esw_attr->dests[i].flags & MLX5_ESW_DEST_ENCAP_VALID)) {
1336                                 all_flow_encaps_valid = false;
1337                                 break;
1338                         }
1339                 }
1340                 /* Do not offload flows with unresolved neighbors */
1341                 if (!all_flow_encaps_valid)
1342                         continue;
1343                 /* update from slow path rule to encap rule */
1344                 rule = mlx5e_tc_offload_fdb_rules(esw, flow, spec, esw_attr);
1345                 if (IS_ERR(rule)) {
1346                         err = PTR_ERR(rule);
1347                         mlx5_core_warn(priv->mdev, "Failed to update cached encapsulation flow, %d\n",
1348                                        err);
1349                         continue;
1350                 }
1351
1352                 mlx5e_tc_unoffload_from_slow_path(esw, flow, &slow_attr);
1353                 flow->rule[0] = rule;
1354                 /* was unset when slow path rule removed */
1355                 flow_flag_set(flow, OFFLOADED);
1356         }
1357 }
1358
1359 void mlx5e_tc_encap_flows_del(struct mlx5e_priv *priv,
1360                               struct mlx5e_encap_entry *e,
1361                               struct list_head *flow_list)
1362 {
1363         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1364         struct mlx5_esw_flow_attr slow_attr;
1365         struct mlx5_flow_handle *rule;
1366         struct mlx5_flow_spec *spec;
1367         struct mlx5e_tc_flow *flow;
1368         int err;
1369
1370         list_for_each_entry(flow, flow_list, tmp_list) {
1371                 if (!mlx5e_is_offloaded_flow(flow))
1372                         continue;
1373                 spec = &flow->esw_attr->parse_attr->spec;
1374
1375                 /* update from encap rule to slow path rule */
1376                 rule = mlx5e_tc_offload_to_slow_path(esw, flow, spec, &slow_attr);
1377                 /* mark the flow's encap dest as non-valid */
1378                 flow->esw_attr->dests[flow->tmp_efi_index].flags &= ~MLX5_ESW_DEST_ENCAP_VALID;
1379
1380                 if (IS_ERR(rule)) {
1381                         err = PTR_ERR(rule);
1382                         mlx5_core_warn(priv->mdev, "Failed to update slow path (encap) flow, %d\n",
1383                                        err);
1384                         continue;
1385                 }
1386
1387                 mlx5e_tc_unoffload_fdb_rules(esw, flow, flow->esw_attr);
1388                 flow->rule[0] = rule;
1389                 /* was unset when fast path rule removed */
1390                 flow_flag_set(flow, OFFLOADED);
1391         }
1392
1393         /* we know that the encap is valid */
1394         e->flags &= ~MLX5_ENCAP_ENTRY_VALID;
1395         mlx5_packet_reformat_dealloc(priv->mdev, e->pkt_reformat);
1396 }
1397
1398 static struct mlx5_fc *mlx5e_tc_get_counter(struct mlx5e_tc_flow *flow)
1399 {
1400         if (mlx5e_is_eswitch_flow(flow))
1401                 return flow->esw_attr->counter;
1402         else
1403                 return flow->nic_attr->counter;
1404 }
1405
1406 /* Takes reference to all flows attached to encap and adds the flows to
1407  * flow_list using 'tmp_list' list_head in mlx5e_tc_flow.
1408  */
1409 void mlx5e_take_all_encap_flows(struct mlx5e_encap_entry *e, struct list_head *flow_list)
1410 {
1411         struct encap_flow_item *efi;
1412         struct mlx5e_tc_flow *flow;
1413
1414         list_for_each_entry(efi, &e->flows, list) {
1415                 flow = container_of(efi, struct mlx5e_tc_flow, encaps[efi->index]);
1416                 if (IS_ERR(mlx5e_flow_get(flow)))
1417                         continue;
1418                 wait_for_completion(&flow->init_done);
1419
1420                 flow->tmp_efi_index = efi->index;
1421                 list_add(&flow->tmp_list, flow_list);
1422         }
1423 }
1424
1425 /* Iterate over tmp_list of flows attached to flow_list head. */
1426 void mlx5e_put_encap_flow_list(struct mlx5e_priv *priv, struct list_head *flow_list)
1427 {
1428         struct mlx5e_tc_flow *flow, *tmp;
1429
1430         list_for_each_entry_safe(flow, tmp, flow_list, tmp_list)
1431                 mlx5e_flow_put(priv, flow);
1432 }
1433
1434 static struct mlx5e_encap_entry *
1435 mlx5e_get_next_valid_encap(struct mlx5e_neigh_hash_entry *nhe,
1436                            struct mlx5e_encap_entry *e)
1437 {
1438         struct mlx5e_encap_entry *next = NULL;
1439
1440 retry:
1441         rcu_read_lock();
1442
1443         /* find encap with non-zero reference counter value */
1444         for (next = e ?
1445                      list_next_or_null_rcu(&nhe->encap_list,
1446                                            &e->encap_list,
1447                                            struct mlx5e_encap_entry,
1448                                            encap_list) :
1449                      list_first_or_null_rcu(&nhe->encap_list,
1450                                             struct mlx5e_encap_entry,
1451                                             encap_list);
1452              next;
1453              next = list_next_or_null_rcu(&nhe->encap_list,
1454                                           &next->encap_list,
1455                                           struct mlx5e_encap_entry,
1456                                           encap_list))
1457                 if (mlx5e_encap_take(next))
1458                         break;
1459
1460         rcu_read_unlock();
1461
1462         /* release starting encap */
1463         if (e)
1464                 mlx5e_encap_put(netdev_priv(e->out_dev), e);
1465         if (!next)
1466                 return next;
1467
1468         /* wait for encap to be fully initialized */
1469         wait_for_completion(&next->res_ready);
1470         /* continue searching if encap entry is not in valid state after completion */
1471         if (!(next->flags & MLX5_ENCAP_ENTRY_VALID)) {
1472                 e = next;
1473                 goto retry;
1474         }
1475
1476         return next;
1477 }
1478
1479 void mlx5e_tc_update_neigh_used_value(struct mlx5e_neigh_hash_entry *nhe)
1480 {
1481         struct mlx5e_neigh *m_neigh = &nhe->m_neigh;
1482         struct mlx5e_encap_entry *e = NULL;
1483         struct mlx5e_tc_flow *flow;
1484         struct mlx5_fc *counter;
1485         struct neigh_table *tbl;
1486         bool neigh_used = false;
1487         struct neighbour *n;
1488         u64 lastuse;
1489
1490         if (m_neigh->family == AF_INET)
1491                 tbl = &arp_tbl;
1492 #if IS_ENABLED(CONFIG_IPV6)
1493         else if (m_neigh->family == AF_INET6)
1494                 tbl = ipv6_stub->nd_tbl;
1495 #endif
1496         else
1497                 return;
1498
1499         /* mlx5e_get_next_valid_encap() releases previous encap before returning
1500          * next one.
1501          */
1502         while ((e = mlx5e_get_next_valid_encap(nhe, e)) != NULL) {
1503                 struct mlx5e_priv *priv = netdev_priv(e->out_dev);
1504                 struct encap_flow_item *efi, *tmp;
1505                 struct mlx5_eswitch *esw;
1506                 LIST_HEAD(flow_list);
1507
1508                 esw = priv->mdev->priv.eswitch;
1509                 mutex_lock(&esw->offloads.encap_tbl_lock);
1510                 list_for_each_entry_safe(efi, tmp, &e->flows, list) {
1511                         flow = container_of(efi, struct mlx5e_tc_flow,
1512                                             encaps[efi->index]);
1513                         if (IS_ERR(mlx5e_flow_get(flow)))
1514                                 continue;
1515                         list_add(&flow->tmp_list, &flow_list);
1516
1517                         if (mlx5e_is_offloaded_flow(flow)) {
1518                                 counter = mlx5e_tc_get_counter(flow);
1519                                 lastuse = mlx5_fc_query_lastuse(counter);
1520                                 if (time_after((unsigned long)lastuse, nhe->reported_lastuse)) {
1521                                         neigh_used = true;
1522                                         break;
1523                                 }
1524                         }
1525                 }
1526                 mutex_unlock(&esw->offloads.encap_tbl_lock);
1527
1528                 mlx5e_put_encap_flow_list(priv, &flow_list);
1529                 if (neigh_used) {
1530                         /* release current encap before breaking the loop */
1531                         mlx5e_encap_put(priv, e);
1532                         break;
1533                 }
1534         }
1535
1536         trace_mlx5e_tc_update_neigh_used_value(nhe, neigh_used);
1537
1538         if (neigh_used) {
1539                 nhe->reported_lastuse = jiffies;
1540
1541                 /* find the relevant neigh according to the cached device and
1542                  * dst ip pair
1543                  */
1544                 n = neigh_lookup(tbl, &m_neigh->dst_ip, m_neigh->dev);
1545                 if (!n)
1546                         return;
1547
1548                 neigh_event_send(n, NULL);
1549                 neigh_release(n);
1550         }
1551 }
1552
1553 static void mlx5e_encap_dealloc(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e)
1554 {
1555         WARN_ON(!list_empty(&e->flows));
1556
1557         if (e->compl_result > 0) {
1558                 mlx5e_rep_encap_entry_detach(netdev_priv(e->out_dev), e);
1559
1560                 if (e->flags & MLX5_ENCAP_ENTRY_VALID)
1561                         mlx5_packet_reformat_dealloc(priv->mdev, e->pkt_reformat);
1562         }
1563
1564         kfree(e->tun_info);
1565         kfree(e->encap_header);
1566         kfree_rcu(e, rcu);
1567 }
1568
1569 void mlx5e_encap_put(struct mlx5e_priv *priv, struct mlx5e_encap_entry *e)
1570 {
1571         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1572
1573         if (!refcount_dec_and_mutex_lock(&e->refcnt, &esw->offloads.encap_tbl_lock))
1574                 return;
1575         hash_del_rcu(&e->encap_hlist);
1576         mutex_unlock(&esw->offloads.encap_tbl_lock);
1577
1578         mlx5e_encap_dealloc(priv, e);
1579 }
1580
1581 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
1582                                struct mlx5e_tc_flow *flow, int out_index)
1583 {
1584         struct mlx5e_encap_entry *e = flow->encaps[out_index].e;
1585         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1586
1587         /* flow wasn't fully initialized */
1588         if (!e)
1589                 return;
1590
1591         mutex_lock(&esw->offloads.encap_tbl_lock);
1592         list_del(&flow->encaps[out_index].list);
1593         flow->encaps[out_index].e = NULL;
1594         if (!refcount_dec_and_test(&e->refcnt)) {
1595                 mutex_unlock(&esw->offloads.encap_tbl_lock);
1596                 return;
1597         }
1598         hash_del_rcu(&e->encap_hlist);
1599         mutex_unlock(&esw->offloads.encap_tbl_lock);
1600
1601         mlx5e_encap_dealloc(priv, e);
1602 }
1603
1604 static void __mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
1605 {
1606         struct mlx5_eswitch *esw = flow->priv->mdev->priv.eswitch;
1607
1608         if (!flow_flag_test(flow, ESWITCH) ||
1609             !flow_flag_test(flow, DUP))
1610                 return;
1611
1612         mutex_lock(&esw->offloads.peer_mutex);
1613         list_del(&flow->peer);
1614         mutex_unlock(&esw->offloads.peer_mutex);
1615
1616         flow_flag_clear(flow, DUP);
1617
1618         mlx5e_tc_del_fdb_flow(flow->peer_flow->priv, flow->peer_flow);
1619         kvfree(flow->peer_flow);
1620         flow->peer_flow = NULL;
1621 }
1622
1623 static void mlx5e_tc_del_fdb_peer_flow(struct mlx5e_tc_flow *flow)
1624 {
1625         struct mlx5_core_dev *dev = flow->priv->mdev;
1626         struct mlx5_devcom *devcom = dev->priv.devcom;
1627         struct mlx5_eswitch *peer_esw;
1628
1629         peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
1630         if (!peer_esw)
1631                 return;
1632
1633         __mlx5e_tc_del_fdb_peer_flow(flow);
1634         mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
1635 }
1636
1637 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
1638                               struct mlx5e_tc_flow *flow)
1639 {
1640         if (mlx5e_is_eswitch_flow(flow)) {
1641                 mlx5e_tc_del_fdb_peer_flow(flow);
1642                 mlx5e_tc_del_fdb_flow(priv, flow);
1643         } else {
1644                 mlx5e_tc_del_nic_flow(priv, flow);
1645         }
1646 }
1647
1648
1649 static int parse_tunnel_attr(struct mlx5e_priv *priv,
1650                              struct mlx5_flow_spec *spec,
1651                              struct flow_cls_offload *f,
1652                              struct net_device *filter_dev, u8 *match_level)
1653 {
1654         struct netlink_ext_ack *extack = f->common.extack;
1655         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1656                                        outer_headers);
1657         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1658                                        outer_headers);
1659         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
1660         int err;
1661
1662         err = mlx5e_tc_tun_parse(filter_dev, priv, spec, f,
1663                                  headers_c, headers_v, match_level);
1664         if (err) {
1665                 NL_SET_ERR_MSG_MOD(extack,
1666                                    "failed to parse tunnel attributes");
1667                 return err;
1668         }
1669
1670         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
1671                 struct flow_match_control match;
1672                 u16 addr_type;
1673
1674                 flow_rule_match_enc_control(rule, &match);
1675                 addr_type = match.key->addr_type;
1676
1677                 /* For tunnel addr_type used same key id`s as for non-tunnel */
1678                 if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
1679                         struct flow_match_ipv4_addrs match;
1680
1681                         flow_rule_match_enc_ipv4_addrs(rule, &match);
1682                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1683                                  src_ipv4_src_ipv6.ipv4_layout.ipv4,
1684                                  ntohl(match.mask->src));
1685                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1686                                  src_ipv4_src_ipv6.ipv4_layout.ipv4,
1687                                  ntohl(match.key->src));
1688
1689                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1690                                  dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
1691                                  ntohl(match.mask->dst));
1692                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1693                                  dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
1694                                  ntohl(match.key->dst));
1695
1696                         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c,
1697                                          ethertype);
1698                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
1699                                  ETH_P_IP);
1700                 } else if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
1701                         struct flow_match_ipv6_addrs match;
1702
1703                         flow_rule_match_enc_ipv6_addrs(rule, &match);
1704                         memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1705                                             src_ipv4_src_ipv6.ipv6_layout.ipv6),
1706                                &match.mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout,
1707                                                                    ipv6));
1708                         memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1709                                             src_ipv4_src_ipv6.ipv6_layout.ipv6),
1710                                &match.key->src, MLX5_FLD_SZ_BYTES(ipv6_layout,
1711                                                                   ipv6));
1712
1713                         memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1714                                             dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1715                                &match.mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout,
1716                                                                    ipv6));
1717                         memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1718                                             dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
1719                                &match.key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout,
1720                                                                   ipv6));
1721
1722                         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c,
1723                                          ethertype);
1724                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
1725                                  ETH_P_IPV6);
1726                 }
1727         }
1728
1729         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_IP)) {
1730                 struct flow_match_ip match;
1731
1732                 flow_rule_match_enc_ip(rule, &match);
1733                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn,
1734                          match.mask->tos & 0x3);
1735                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn,
1736                          match.key->tos & 0x3);
1737
1738                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp,
1739                          match.mask->tos >> 2);
1740                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp,
1741                          match.key->tos  >> 2);
1742
1743                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit,
1744                          match.mask->ttl);
1745                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit,
1746                          match.key->ttl);
1747
1748                 if (match.mask->ttl &&
1749                     !MLX5_CAP_ESW_FLOWTABLE_FDB
1750                         (priv->mdev,
1751                          ft_field_support.outer_ipv4_ttl)) {
1752                         NL_SET_ERR_MSG_MOD(extack,
1753                                            "Matching on TTL is not supported");
1754                         return -EOPNOTSUPP;
1755                 }
1756
1757         }
1758
1759         /* Enforce DMAC when offloading incoming tunneled flows.
1760          * Flow counters require a match on the DMAC.
1761          */
1762         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
1763         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
1764         ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1765                                      dmac_47_16), priv->netdev->dev_addr);
1766
1767         /* let software handle IP fragments */
1768         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
1769         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
1770
1771         return 0;
1772 }
1773
1774 static void *get_match_headers_criteria(u32 flags,
1775                                         struct mlx5_flow_spec *spec)
1776 {
1777         return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
1778                 MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1779                              inner_headers) :
1780                 MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1781                              outer_headers);
1782 }
1783
1784 static void *get_match_headers_value(u32 flags,
1785                                      struct mlx5_flow_spec *spec)
1786 {
1787         return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
1788                 MLX5_ADDR_OF(fte_match_param, spec->match_value,
1789                              inner_headers) :
1790                 MLX5_ADDR_OF(fte_match_param, spec->match_value,
1791                              outer_headers);
1792 }
1793
1794 static int __parse_cls_flower(struct mlx5e_priv *priv,
1795                               struct mlx5_flow_spec *spec,
1796                               struct flow_cls_offload *f,
1797                               struct net_device *filter_dev,
1798                               u8 *inner_match_level, u8 *outer_match_level)
1799 {
1800         struct netlink_ext_ack *extack = f->common.extack;
1801         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1802                                        outer_headers);
1803         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1804                                        outer_headers);
1805         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
1806                                     misc_parameters);
1807         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
1808                                     misc_parameters);
1809         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
1810         struct flow_dissector *dissector = rule->match.dissector;
1811         u16 addr_type = 0;
1812         u8 ip_proto = 0;
1813         u8 *match_level;
1814
1815         match_level = outer_match_level;
1816
1817         if (dissector->used_keys &
1818             ~(BIT(FLOW_DISSECTOR_KEY_META) |
1819               BIT(FLOW_DISSECTOR_KEY_CONTROL) |
1820               BIT(FLOW_DISSECTOR_KEY_BASIC) |
1821               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
1822               BIT(FLOW_DISSECTOR_KEY_VLAN) |
1823               BIT(FLOW_DISSECTOR_KEY_CVLAN) |
1824               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
1825               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
1826               BIT(FLOW_DISSECTOR_KEY_PORTS) |
1827               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
1828               BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
1829               BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
1830               BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
1831               BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL) |
1832               BIT(FLOW_DISSECTOR_KEY_TCP) |
1833               BIT(FLOW_DISSECTOR_KEY_IP)  |
1834               BIT(FLOW_DISSECTOR_KEY_ENC_IP) |
1835               BIT(FLOW_DISSECTOR_KEY_ENC_OPTS))) {
1836                 NL_SET_ERR_MSG_MOD(extack, "Unsupported key");
1837                 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
1838                             dissector->used_keys);
1839                 return -EOPNOTSUPP;
1840         }
1841
1842         if (mlx5e_get_tc_tun(filter_dev)) {
1843                 if (parse_tunnel_attr(priv, spec, f, filter_dev,
1844                                       outer_match_level))
1845                         return -EOPNOTSUPP;
1846
1847                 /* At this point, header pointers should point to the inner
1848                  * headers, outer header were already set by parse_tunnel_attr
1849                  */
1850                 match_level = inner_match_level;
1851                 headers_c = get_match_headers_criteria(MLX5_FLOW_CONTEXT_ACTION_DECAP,
1852                                                        spec);
1853                 headers_v = get_match_headers_value(MLX5_FLOW_CONTEXT_ACTION_DECAP,
1854                                                     spec);
1855         }
1856
1857         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
1858                 struct flow_match_basic match;
1859
1860                 flow_rule_match_basic(rule, &match);
1861                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
1862                          ntohs(match.mask->n_proto));
1863                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
1864                          ntohs(match.key->n_proto));
1865
1866                 if (match.mask->n_proto)
1867                         *match_level = MLX5_MATCH_L2;
1868         }
1869         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_VLAN) ||
1870             is_vlan_dev(filter_dev)) {
1871                 struct flow_dissector_key_vlan filter_dev_mask;
1872                 struct flow_dissector_key_vlan filter_dev_key;
1873                 struct flow_match_vlan match;
1874
1875                 if (is_vlan_dev(filter_dev)) {
1876                         match.key = &filter_dev_key;
1877                         match.key->vlan_id = vlan_dev_vlan_id(filter_dev);
1878                         match.key->vlan_tpid = vlan_dev_vlan_proto(filter_dev);
1879                         match.key->vlan_priority = 0;
1880                         match.mask = &filter_dev_mask;
1881                         memset(match.mask, 0xff, sizeof(*match.mask));
1882                         match.mask->vlan_priority = 0;
1883                 } else {
1884                         flow_rule_match_vlan(rule, &match);
1885                 }
1886                 if (match.mask->vlan_id ||
1887                     match.mask->vlan_priority ||
1888                     match.mask->vlan_tpid) {
1889                         if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
1890                                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1891                                          svlan_tag, 1);
1892                                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1893                                          svlan_tag, 1);
1894                         } else {
1895                                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
1896                                          cvlan_tag, 1);
1897                                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
1898                                          cvlan_tag, 1);
1899                         }
1900
1901                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid,
1902                                  match.mask->vlan_id);
1903                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid,
1904                                  match.key->vlan_id);
1905
1906                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio,
1907                                  match.mask->vlan_priority);
1908                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio,
1909                                  match.key->vlan_priority);
1910
1911                         *match_level = MLX5_MATCH_L2;
1912                 }
1913         } else if (*match_level != MLX5_MATCH_NONE) {
1914                 /* cvlan_tag enabled in match criteria and
1915                  * disabled in match value means both S & C tags
1916                  * don't exist (untagged of both)
1917                  */
1918                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
1919                 *match_level = MLX5_MATCH_L2;
1920         }
1921
1922         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CVLAN)) {
1923                 struct flow_match_vlan match;
1924
1925                 flow_rule_match_cvlan(rule, &match);
1926                 if (match.mask->vlan_id ||
1927                     match.mask->vlan_priority ||
1928                     match.mask->vlan_tpid) {
1929                         if (match.key->vlan_tpid == htons(ETH_P_8021AD)) {
1930                                 MLX5_SET(fte_match_set_misc, misc_c,
1931                                          outer_second_svlan_tag, 1);
1932                                 MLX5_SET(fte_match_set_misc, misc_v,
1933                                          outer_second_svlan_tag, 1);
1934                         } else {
1935                                 MLX5_SET(fte_match_set_misc, misc_c,
1936                                          outer_second_cvlan_tag, 1);
1937                                 MLX5_SET(fte_match_set_misc, misc_v,
1938                                          outer_second_cvlan_tag, 1);
1939                         }
1940
1941                         MLX5_SET(fte_match_set_misc, misc_c, outer_second_vid,
1942                                  match.mask->vlan_id);
1943                         MLX5_SET(fte_match_set_misc, misc_v, outer_second_vid,
1944                                  match.key->vlan_id);
1945                         MLX5_SET(fte_match_set_misc, misc_c, outer_second_prio,
1946                                  match.mask->vlan_priority);
1947                         MLX5_SET(fte_match_set_misc, misc_v, outer_second_prio,
1948                                  match.key->vlan_priority);
1949
1950                         *match_level = MLX5_MATCH_L2;
1951                 }
1952         }
1953
1954         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
1955                 struct flow_match_eth_addrs match;
1956
1957                 flow_rule_match_eth_addrs(rule, &match);
1958                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1959                                              dmac_47_16),
1960                                 match.mask->dst);
1961                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1962                                              dmac_47_16),
1963                                 match.key->dst);
1964
1965                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
1966                                              smac_47_16),
1967                                 match.mask->src);
1968                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
1969                                              smac_47_16),
1970                                 match.key->src);
1971
1972                 if (!is_zero_ether_addr(match.mask->src) ||
1973                     !is_zero_ether_addr(match.mask->dst))
1974                         *match_level = MLX5_MATCH_L2;
1975         }
1976
1977         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CONTROL)) {
1978                 struct flow_match_control match;
1979
1980                 flow_rule_match_control(rule, &match);
1981                 addr_type = match.key->addr_type;
1982
1983                 /* the HW doesn't support frag first/later */
1984                 if (match.mask->flags & FLOW_DIS_FIRST_FRAG)
1985                         return -EOPNOTSUPP;
1986
1987                 if (match.mask->flags & FLOW_DIS_IS_FRAGMENT) {
1988                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
1989                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
1990                                  match.key->flags & FLOW_DIS_IS_FRAGMENT);
1991
1992                         /* the HW doesn't need L3 inline to match on frag=no */
1993                         if (!(match.key->flags & FLOW_DIS_IS_FRAGMENT))
1994                                 *match_level = MLX5_MATCH_L2;
1995         /* ***  L2 attributes parsing up to here *** */
1996                         else
1997                                 *match_level = MLX5_MATCH_L3;
1998                 }
1999         }
2000
2001         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
2002                 struct flow_match_basic match;
2003
2004                 flow_rule_match_basic(rule, &match);
2005                 ip_proto = match.key->ip_proto;
2006
2007                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
2008                          match.mask->ip_proto);
2009                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
2010                          match.key->ip_proto);
2011
2012                 if (match.mask->ip_proto)
2013                         *match_level = MLX5_MATCH_L3;
2014         }
2015
2016         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
2017                 struct flow_match_ipv4_addrs match;
2018
2019                 flow_rule_match_ipv4_addrs(rule, &match);
2020                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2021                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
2022                        &match.mask->src, sizeof(match.mask->src));
2023                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2024                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
2025                        &match.key->src, sizeof(match.key->src));
2026                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2027                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2028                        &match.mask->dst, sizeof(match.mask->dst));
2029                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2030                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2031                        &match.key->dst, sizeof(match.key->dst));
2032
2033                 if (match.mask->src || match.mask->dst)
2034                         *match_level = MLX5_MATCH_L3;
2035         }
2036
2037         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
2038                 struct flow_match_ipv6_addrs match;
2039
2040                 flow_rule_match_ipv6_addrs(rule, &match);
2041                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2042                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
2043                        &match.mask->src, sizeof(match.mask->src));
2044                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2045                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
2046                        &match.key->src, sizeof(match.key->src));
2047
2048                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
2049                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2050                        &match.mask->dst, sizeof(match.mask->dst));
2051                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
2052                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
2053                        &match.key->dst, sizeof(match.key->dst));
2054
2055                 if (ipv6_addr_type(&match.mask->src) != IPV6_ADDR_ANY ||
2056                     ipv6_addr_type(&match.mask->dst) != IPV6_ADDR_ANY)
2057                         *match_level = MLX5_MATCH_L3;
2058         }
2059
2060         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_IP)) {
2061                 struct flow_match_ip match;
2062
2063                 flow_rule_match_ip(rule, &match);
2064                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_ecn,
2065                          match.mask->tos & 0x3);
2066                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_ecn,
2067                          match.key->tos & 0x3);
2068
2069                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_dscp,
2070                          match.mask->tos >> 2);
2071                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_dscp,
2072                          match.key->tos  >> 2);
2073
2074                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ttl_hoplimit,
2075                          match.mask->ttl);
2076                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ttl_hoplimit,
2077                          match.key->ttl);
2078
2079                 if (match.mask->ttl &&
2080                     !MLX5_CAP_ESW_FLOWTABLE_FDB(priv->mdev,
2081                                                 ft_field_support.outer_ipv4_ttl)) {
2082                         NL_SET_ERR_MSG_MOD(extack,
2083                                            "Matching on TTL is not supported");
2084                         return -EOPNOTSUPP;
2085                 }
2086
2087                 if (match.mask->tos || match.mask->ttl)
2088                         *match_level = MLX5_MATCH_L3;
2089         }
2090
2091         /* ***  L3 attributes parsing up to here *** */
2092
2093         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_PORTS)) {
2094                 struct flow_match_ports match;
2095
2096                 flow_rule_match_ports(rule, &match);
2097                 switch (ip_proto) {
2098                 case IPPROTO_TCP:
2099                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2100                                  tcp_sport, ntohs(match.mask->src));
2101                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2102                                  tcp_sport, ntohs(match.key->src));
2103
2104                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2105                                  tcp_dport, ntohs(match.mask->dst));
2106                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2107                                  tcp_dport, ntohs(match.key->dst));
2108                         break;
2109
2110                 case IPPROTO_UDP:
2111                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2112                                  udp_sport, ntohs(match.mask->src));
2113                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2114                                  udp_sport, ntohs(match.key->src));
2115
2116                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
2117                                  udp_dport, ntohs(match.mask->dst));
2118                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
2119                                  udp_dport, ntohs(match.key->dst));
2120                         break;
2121                 default:
2122                         NL_SET_ERR_MSG_MOD(extack,
2123                                            "Only UDP and TCP transports are supported for L4 matching");
2124                         netdev_err(priv->netdev,
2125                                    "Only UDP and TCP transport are supported\n");
2126                         return -EINVAL;
2127                 }
2128
2129                 if (match.mask->src || match.mask->dst)
2130                         *match_level = MLX5_MATCH_L4;
2131         }
2132
2133         if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_TCP)) {
2134                 struct flow_match_tcp match;
2135
2136                 flow_rule_match_tcp(rule, &match);
2137                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, tcp_flags,
2138                          ntohs(match.mask->flags));
2139                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, tcp_flags,
2140                          ntohs(match.key->flags));
2141
2142                 if (match.mask->flags)
2143                         *match_level = MLX5_MATCH_L4;
2144         }
2145
2146         return 0;
2147 }
2148
2149 static int parse_cls_flower(struct mlx5e_priv *priv,
2150                             struct mlx5e_tc_flow *flow,
2151                             struct mlx5_flow_spec *spec,
2152                             struct flow_cls_offload *f,
2153                             struct net_device *filter_dev)
2154 {
2155         u8 inner_match_level, outer_match_level, non_tunnel_match_level;
2156         struct netlink_ext_ack *extack = f->common.extack;
2157         struct mlx5_core_dev *dev = priv->mdev;
2158         struct mlx5_eswitch *esw = dev->priv.eswitch;
2159         struct mlx5e_rep_priv *rpriv = priv->ppriv;
2160         struct mlx5_eswitch_rep *rep;
2161         bool is_eswitch_flow;
2162         int err;
2163
2164         inner_match_level = MLX5_MATCH_NONE;
2165         outer_match_level = MLX5_MATCH_NONE;
2166
2167         err = __parse_cls_flower(priv, spec, f, filter_dev, &inner_match_level,
2168                                  &outer_match_level);
2169         non_tunnel_match_level = (inner_match_level == MLX5_MATCH_NONE) ?
2170                                  outer_match_level : inner_match_level;
2171
2172         is_eswitch_flow = mlx5e_is_eswitch_flow(flow);
2173         if (!err && is_eswitch_flow) {
2174                 rep = rpriv->rep;
2175                 if (rep->vport != MLX5_VPORT_UPLINK &&
2176                     (esw->offloads.inline_mode != MLX5_INLINE_MODE_NONE &&
2177                     esw->offloads.inline_mode < non_tunnel_match_level)) {
2178                         NL_SET_ERR_MSG_MOD(extack,
2179                                            "Flow is not offloaded due to min inline setting");
2180                         netdev_warn(priv->netdev,
2181                                     "Flow is not offloaded due to min inline setting, required %d actual %d\n",
2182                                     non_tunnel_match_level, esw->offloads.inline_mode);
2183                         return -EOPNOTSUPP;
2184                 }
2185         }
2186
2187         if (is_eswitch_flow) {
2188                 flow->esw_attr->inner_match_level = inner_match_level;
2189                 flow->esw_attr->outer_match_level = outer_match_level;
2190         } else {
2191                 flow->nic_attr->match_level = non_tunnel_match_level;
2192         }
2193
2194         return err;
2195 }
2196
2197 struct pedit_headers {
2198         struct ethhdr  eth;
2199         struct vlan_hdr vlan;
2200         struct iphdr   ip4;
2201         struct ipv6hdr ip6;
2202         struct tcphdr  tcp;
2203         struct udphdr  udp;
2204 };
2205
2206 struct pedit_headers_action {
2207         struct pedit_headers    vals;
2208         struct pedit_headers    masks;
2209         u32                     pedits;
2210 };
2211
2212 static int pedit_header_offsets[] = {
2213         [FLOW_ACT_MANGLE_HDR_TYPE_ETH] = offsetof(struct pedit_headers, eth),
2214         [FLOW_ACT_MANGLE_HDR_TYPE_IP4] = offsetof(struct pedit_headers, ip4),
2215         [FLOW_ACT_MANGLE_HDR_TYPE_IP6] = offsetof(struct pedit_headers, ip6),
2216         [FLOW_ACT_MANGLE_HDR_TYPE_TCP] = offsetof(struct pedit_headers, tcp),
2217         [FLOW_ACT_MANGLE_HDR_TYPE_UDP] = offsetof(struct pedit_headers, udp),
2218 };
2219
2220 #define pedit_header(_ph, _htype) ((void *)(_ph) + pedit_header_offsets[_htype])
2221
2222 static int set_pedit_val(u8 hdr_type, u32 mask, u32 val, u32 offset,
2223                          struct pedit_headers_action *hdrs)
2224 {
2225         u32 *curr_pmask, *curr_pval;
2226
2227         curr_pmask = (u32 *)(pedit_header(&hdrs->masks, hdr_type) + offset);
2228         curr_pval  = (u32 *)(pedit_header(&hdrs->vals, hdr_type) + offset);
2229
2230         if (*curr_pmask & mask)  /* disallow acting twice on the same location */
2231                 goto out_err;
2232
2233         *curr_pmask |= mask;
2234         *curr_pval  |= (val & mask);
2235
2236         return 0;
2237
2238 out_err:
2239         return -EOPNOTSUPP;
2240 }
2241
2242 struct mlx5_fields {
2243         u8  field;
2244         u8  field_bsize;
2245         u32 field_mask;
2246         u32 offset;
2247         u32 match_offset;
2248 };
2249
2250 #define OFFLOAD(fw_field, field_bsize, field_mask, field, off, match_field) \
2251                 {MLX5_ACTION_IN_FIELD_OUT_ ## fw_field, field_bsize, field_mask, \
2252                  offsetof(struct pedit_headers, field) + (off), \
2253                  MLX5_BYTE_OFF(fte_match_set_lyr_2_4, match_field)}
2254
2255 /* masked values are the same and there are no rewrites that do not have a
2256  * match.
2257  */
2258 #define SAME_VAL_MASK(type, valp, maskp, matchvalp, matchmaskp) ({ \
2259         type matchmaskx = *(type *)(matchmaskp); \
2260         type matchvalx = *(type *)(matchvalp); \
2261         type maskx = *(type *)(maskp); \
2262         type valx = *(type *)(valp); \
2263         \
2264         (valx & maskx) == (matchvalx & matchmaskx) && !(maskx & (maskx ^ \
2265                                                                  matchmaskx)); \
2266 })
2267
2268 static bool cmp_val_mask(void *valp, void *maskp, void *matchvalp,
2269                          void *matchmaskp, u8 bsize)
2270 {
2271         bool same = false;
2272
2273         switch (bsize) {
2274         case 8:
2275                 same = SAME_VAL_MASK(u8, valp, maskp, matchvalp, matchmaskp);
2276                 break;
2277         case 16:
2278                 same = SAME_VAL_MASK(u16, valp, maskp, matchvalp, matchmaskp);
2279                 break;
2280         case 32:
2281                 same = SAME_VAL_MASK(u32, valp, maskp, matchvalp, matchmaskp);
2282                 break;
2283         }
2284
2285         return same;
2286 }
2287
2288 static struct mlx5_fields fields[] = {
2289         OFFLOAD(DMAC_47_16, 32, U32_MAX, eth.h_dest[0], 0, dmac_47_16),
2290         OFFLOAD(DMAC_15_0,  16, U16_MAX, eth.h_dest[4], 0, dmac_15_0),
2291         OFFLOAD(SMAC_47_16, 32, U32_MAX, eth.h_source[0], 0, smac_47_16),
2292         OFFLOAD(SMAC_15_0,  16, U16_MAX, eth.h_source[4], 0, smac_15_0),
2293         OFFLOAD(ETHERTYPE,  16, U16_MAX, eth.h_proto, 0, ethertype),
2294         OFFLOAD(FIRST_VID,  16, U16_MAX, vlan.h_vlan_TCI, 0, first_vid),
2295
2296         OFFLOAD(IP_DSCP, 8,    0xfc, ip4.tos,   0, ip_dscp),
2297         OFFLOAD(IP_TTL,  8,  U8_MAX, ip4.ttl,   0, ttl_hoplimit),
2298         OFFLOAD(SIPV4,  32, U32_MAX, ip4.saddr, 0, src_ipv4_src_ipv6.ipv4_layout.ipv4),
2299         OFFLOAD(DIPV4,  32, U32_MAX, ip4.daddr, 0, dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
2300
2301         OFFLOAD(SIPV6_127_96, 32, U32_MAX, ip6.saddr.s6_addr32[0], 0,
2302                 src_ipv4_src_ipv6.ipv6_layout.ipv6[0]),
2303         OFFLOAD(SIPV6_95_64,  32, U32_MAX, ip6.saddr.s6_addr32[1], 0,
2304                 src_ipv4_src_ipv6.ipv6_layout.ipv6[4]),
2305         OFFLOAD(SIPV6_63_32,  32, U32_MAX, ip6.saddr.s6_addr32[2], 0,
2306                 src_ipv4_src_ipv6.ipv6_layout.ipv6[8]),
2307         OFFLOAD(SIPV6_31_0,   32, U32_MAX, ip6.saddr.s6_addr32[3], 0,
2308                 src_ipv4_src_ipv6.ipv6_layout.ipv6[12]),
2309         OFFLOAD(DIPV6_127_96, 32, U32_MAX, ip6.daddr.s6_addr32[0], 0,
2310                 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[0]),
2311         OFFLOAD(DIPV6_95_64,  32, U32_MAX, ip6.daddr.s6_addr32[1], 0,
2312                 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[4]),
2313         OFFLOAD(DIPV6_63_32,  32, U32_MAX, ip6.daddr.s6_addr32[2], 0,
2314                 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[8]),
2315         OFFLOAD(DIPV6_31_0,   32, U32_MAX, ip6.daddr.s6_addr32[3], 0,
2316                 dst_ipv4_dst_ipv6.ipv6_layout.ipv6[12]),
2317         OFFLOAD(IPV6_HOPLIMIT, 8,  U8_MAX, ip6.hop_limit, 0, ttl_hoplimit),
2318
2319         OFFLOAD(TCP_SPORT, 16, U16_MAX, tcp.source,  0, tcp_sport),
2320         OFFLOAD(TCP_DPORT, 16, U16_MAX, tcp.dest,    0, tcp_dport),
2321         /* in linux iphdr tcp_flags is 8 bits long */
2322         OFFLOAD(TCP_FLAGS,  8,  U8_MAX, tcp.ack_seq, 5, tcp_flags),
2323
2324         OFFLOAD(UDP_SPORT, 16, U16_MAX, udp.source, 0, udp_sport),
2325         OFFLOAD(UDP_DPORT, 16, U16_MAX, udp.dest,   0, udp_dport),
2326 };
2327
2328 /* On input attr->max_mod_hdr_actions tells how many HW actions can be parsed at
2329  * max from the SW pedit action. On success, attr->num_mod_hdr_actions
2330  * says how many HW actions were actually parsed.
2331  */
2332 static int offload_pedit_fields(struct pedit_headers_action *hdrs,
2333                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
2334                                 u32 *action_flags,
2335                                 struct netlink_ext_ack *extack)
2336 {
2337         struct pedit_headers *set_masks, *add_masks, *set_vals, *add_vals;
2338         int i, action_size, nactions, max_actions, first, last, next_z;
2339         void *headers_c, *headers_v, *action, *vals_p;
2340         u32 *s_masks_p, *a_masks_p, s_mask, a_mask;
2341         struct mlx5_fields *f;
2342         unsigned long mask;
2343         __be32 mask_be32;
2344         __be16 mask_be16;
2345         u8 cmd;
2346
2347         headers_c = get_match_headers_criteria(*action_flags, &parse_attr->spec);
2348         headers_v = get_match_headers_value(*action_flags, &parse_attr->spec);
2349
2350         set_masks = &hdrs[0].masks;
2351         add_masks = &hdrs[1].masks;
2352         set_vals = &hdrs[0].vals;
2353         add_vals = &hdrs[1].vals;
2354
2355         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
2356         action = parse_attr->mod_hdr_actions +
2357                  parse_attr->num_mod_hdr_actions * action_size;
2358
2359         max_actions = parse_attr->max_mod_hdr_actions;
2360         nactions = parse_attr->num_mod_hdr_actions;
2361
2362         for (i = 0; i < ARRAY_SIZE(fields); i++) {
2363                 bool skip;
2364
2365                 f = &fields[i];
2366                 /* avoid seeing bits set from previous iterations */
2367                 s_mask = 0;
2368                 a_mask = 0;
2369
2370                 s_masks_p = (void *)set_masks + f->offset;
2371                 a_masks_p = (void *)add_masks + f->offset;
2372
2373                 s_mask = *s_masks_p & f->field_mask;
2374                 a_mask = *a_masks_p & f->field_mask;
2375
2376                 if (!s_mask && !a_mask) /* nothing to offload here */
2377                         continue;
2378
2379                 if (s_mask && a_mask) {
2380                         NL_SET_ERR_MSG_MOD(extack,
2381                                            "can't set and add to the same HW field");
2382                         printk(KERN_WARNING "mlx5: can't set and add to the same HW field (%x)\n", f->field);
2383                         return -EOPNOTSUPP;
2384                 }
2385
2386                 if (nactions == max_actions) {
2387                         NL_SET_ERR_MSG_MOD(extack,
2388                                            "too many pedit actions, can't offload");
2389                         printk(KERN_WARNING "mlx5: parsed %d pedit actions, can't do more\n", nactions);
2390                         return -EOPNOTSUPP;
2391                 }
2392
2393                 skip = false;
2394                 if (s_mask) {
2395                         void *match_mask = headers_c + f->match_offset;
2396                         void *match_val = headers_v + f->match_offset;
2397
2398                         cmd  = MLX5_ACTION_TYPE_SET;
2399                         mask = s_mask;
2400                         vals_p = (void *)set_vals + f->offset;
2401                         /* don't rewrite if we have a match on the same value */
2402                         if (cmp_val_mask(vals_p, s_masks_p, match_val,
2403                                          match_mask, f->field_bsize))
2404                                 skip = true;
2405                         /* clear to denote we consumed this field */
2406                         *s_masks_p &= ~f->field_mask;
2407                 } else {
2408                         cmd  = MLX5_ACTION_TYPE_ADD;
2409                         mask = a_mask;
2410                         vals_p = (void *)add_vals + f->offset;
2411                         /* add 0 is no change */
2412                         if ((*(u32 *)vals_p & f->field_mask) == 0)
2413                                 skip = true;
2414                         /* clear to denote we consumed this field */
2415                         *a_masks_p &= ~f->field_mask;
2416                 }
2417                 if (skip)
2418                         continue;
2419
2420                 if (f->field_bsize == 32) {
2421                         mask_be32 = *(__be32 *)&mask;
2422                         mask = (__force unsigned long)cpu_to_le32(be32_to_cpu(mask_be32));
2423                 } else if (f->field_bsize == 16) {
2424                         mask_be16 = *(__be16 *)&mask;
2425                         mask = (__force unsigned long)cpu_to_le16(be16_to_cpu(mask_be16));
2426                 }
2427
2428                 first = find_first_bit(&mask, f->field_bsize);
2429                 next_z = find_next_zero_bit(&mask, f->field_bsize, first);
2430                 last  = find_last_bit(&mask, f->field_bsize);
2431                 if (first < next_z && next_z < last) {
2432                         NL_SET_ERR_MSG_MOD(extack,
2433                                            "rewrite of few sub-fields isn't supported");
2434                         printk(KERN_WARNING "mlx5: rewrite of few sub-fields (mask %lx) isn't offloaded\n",
2435                                mask);
2436                         return -EOPNOTSUPP;
2437                 }
2438
2439                 MLX5_SET(set_action_in, action, action_type, cmd);
2440                 MLX5_SET(set_action_in, action, field, f->field);
2441
2442                 if (cmd == MLX5_ACTION_TYPE_SET) {
2443                         int start;
2444
2445                         /* if field is bit sized it can start not from first bit */
2446                         start = find_first_bit((unsigned long *)&f->field_mask,
2447                                                f->field_bsize);
2448
2449                         MLX5_SET(set_action_in, action, offset, first - start);
2450                         /* length is num of bits to be written, zero means length of 32 */
2451                         MLX5_SET(set_action_in, action, length, (last - first + 1));
2452                 }
2453
2454                 if (f->field_bsize == 32)
2455                         MLX5_SET(set_action_in, action, data, ntohl(*(__be32 *)vals_p) >> first);
2456                 else if (f->field_bsize == 16)
2457                         MLX5_SET(set_action_in, action, data, ntohs(*(__be16 *)vals_p) >> first);
2458                 else if (f->field_bsize == 8)
2459                         MLX5_SET(set_action_in, action, data, *(u8 *)vals_p >> first);
2460
2461                 action += action_size;
2462                 nactions++;
2463         }
2464
2465         parse_attr->num_mod_hdr_actions = nactions;
2466         return 0;
2467 }
2468
2469 static int mlx5e_flow_namespace_max_modify_action(struct mlx5_core_dev *mdev,
2470                                                   int namespace)
2471 {
2472         if (namespace == MLX5_FLOW_NAMESPACE_FDB) /* FDB offloading */
2473                 return MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, max_modify_header_actions);
2474         else /* namespace is MLX5_FLOW_NAMESPACE_KERNEL - NIC offloading */
2475                 return MLX5_CAP_FLOWTABLE_NIC_RX(mdev, max_modify_header_actions);
2476 }
2477
2478 static int alloc_mod_hdr_actions(struct mlx5e_priv *priv,
2479                                  struct pedit_headers_action *hdrs,
2480                                  int namespace,
2481                                  struct mlx5e_tc_flow_parse_attr *parse_attr)
2482 {
2483         int nkeys, action_size, max_actions;
2484
2485         nkeys = hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits +
2486                 hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits;
2487         action_size = MLX5_UN_SZ_BYTES(set_action_in_add_action_in_auto);
2488
2489         max_actions = mlx5e_flow_namespace_max_modify_action(priv->mdev, namespace);
2490         /* can get up to crazingly 16 HW actions in 32 bits pedit SW key */
2491         max_actions = min(max_actions, nkeys * 16);
2492
2493         parse_attr->mod_hdr_actions = kcalloc(max_actions, action_size, GFP_KERNEL);
2494         if (!parse_attr->mod_hdr_actions)
2495                 return -ENOMEM;
2496
2497         parse_attr->max_mod_hdr_actions = max_actions;
2498         return 0;
2499 }
2500
2501 static const struct pedit_headers zero_masks = {};
2502
2503 static int parse_tc_pedit_action(struct mlx5e_priv *priv,
2504                                  const struct flow_action_entry *act, int namespace,
2505                                  struct mlx5e_tc_flow_parse_attr *parse_attr,
2506                                  struct pedit_headers_action *hdrs,
2507                                  struct netlink_ext_ack *extack)
2508 {
2509         u8 cmd = (act->id == FLOW_ACTION_MANGLE) ? 0 : 1;
2510         int err = -EOPNOTSUPP;
2511         u32 mask, val, offset;
2512         u8 htype;
2513
2514         htype = act->mangle.htype;
2515         err = -EOPNOTSUPP; /* can't be all optimistic */
2516
2517         if (htype == FLOW_ACT_MANGLE_UNSPEC) {
2518                 NL_SET_ERR_MSG_MOD(extack, "legacy pedit isn't offloaded");
2519                 goto out_err;
2520         }
2521
2522         if (!mlx5e_flow_namespace_max_modify_action(priv->mdev, namespace)) {
2523                 NL_SET_ERR_MSG_MOD(extack,
2524                                    "The pedit offload action is not supported");
2525                 goto out_err;
2526         }
2527
2528         mask = act->mangle.mask;
2529         val = act->mangle.val;
2530         offset = act->mangle.offset;
2531
2532         err = set_pedit_val(htype, ~mask, val, offset, &hdrs[cmd]);
2533         if (err)
2534                 goto out_err;
2535
2536         hdrs[cmd].pedits++;
2537
2538         return 0;
2539 out_err:
2540         return err;
2541 }
2542
2543 static int alloc_tc_pedit_action(struct mlx5e_priv *priv, int namespace,
2544                                  struct mlx5e_tc_flow_parse_attr *parse_attr,
2545                                  struct pedit_headers_action *hdrs,
2546                                  u32 *action_flags,
2547                                  struct netlink_ext_ack *extack)
2548 {
2549         struct pedit_headers *cmd_masks;
2550         int err;
2551         u8 cmd;
2552
2553         if (!parse_attr->mod_hdr_actions) {
2554                 err = alloc_mod_hdr_actions(priv, hdrs, namespace, parse_attr);
2555                 if (err)
2556                         goto out_err;
2557         }
2558
2559         err = offload_pedit_fields(hdrs, parse_attr, action_flags, extack);
2560         if (err < 0)
2561                 goto out_dealloc_parsed_actions;
2562
2563         for (cmd = 0; cmd < __PEDIT_CMD_MAX; cmd++) {
2564                 cmd_masks = &hdrs[cmd].masks;
2565                 if (memcmp(cmd_masks, &zero_masks, sizeof(zero_masks))) {
2566                         NL_SET_ERR_MSG_MOD(extack,
2567                                            "attempt to offload an unsupported field");
2568                         netdev_warn(priv->netdev, "attempt to offload an unsupported field (cmd %d)\n", cmd);
2569                         print_hex_dump(KERN_WARNING, "mask: ", DUMP_PREFIX_ADDRESS,
2570                                        16, 1, cmd_masks, sizeof(zero_masks), true);
2571                         err = -EOPNOTSUPP;
2572                         goto out_dealloc_parsed_actions;
2573                 }
2574         }
2575
2576         return 0;
2577
2578 out_dealloc_parsed_actions:
2579         kfree(parse_attr->mod_hdr_actions);
2580 out_err:
2581         return err;
2582 }
2583
2584 static bool csum_offload_supported(struct mlx5e_priv *priv,
2585                                    u32 action,
2586                                    u32 update_flags,
2587                                    struct netlink_ext_ack *extack)
2588 {
2589         u32 prot_flags = TCA_CSUM_UPDATE_FLAG_IPV4HDR | TCA_CSUM_UPDATE_FLAG_TCP |
2590                          TCA_CSUM_UPDATE_FLAG_UDP;
2591
2592         /*  The HW recalcs checksums only if re-writing headers */
2593         if (!(action & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)) {
2594                 NL_SET_ERR_MSG_MOD(extack,
2595                                    "TC csum action is only offloaded with pedit");
2596                 netdev_warn(priv->netdev,
2597                             "TC csum action is only offloaded with pedit\n");
2598                 return false;
2599         }
2600
2601         if (update_flags & ~prot_flags) {
2602                 NL_SET_ERR_MSG_MOD(extack,
2603                                    "can't offload TC csum action for some header/s");
2604                 netdev_warn(priv->netdev,
2605                             "can't offload TC csum action for some header/s - flags %#x\n",
2606                             update_flags);
2607                 return false;
2608         }
2609
2610         return true;
2611 }
2612
2613 struct ip_ttl_word {
2614         __u8    ttl;
2615         __u8    protocol;
2616         __sum16 check;
2617 };
2618
2619 struct ipv6_hoplimit_word {
2620         __be16  payload_len;
2621         __u8    nexthdr;
2622         __u8    hop_limit;
2623 };
2624
2625 static bool is_action_keys_supported(const struct flow_action_entry *act)
2626 {
2627         u32 mask, offset;
2628         u8 htype;
2629
2630         htype = act->mangle.htype;
2631         offset = act->mangle.offset;
2632         mask = ~act->mangle.mask;
2633         /* For IPv4 & IPv6 header check 4 byte word,
2634          * to determine that modified fields
2635          * are NOT ttl & hop_limit only.
2636          */
2637         if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP4) {
2638                 struct ip_ttl_word *ttl_word =
2639                         (struct ip_ttl_word *)&mask;
2640
2641                 if (offset != offsetof(struct iphdr, ttl) ||
2642                     ttl_word->protocol ||
2643                     ttl_word->check) {
2644                         return true;
2645                 }
2646         } else if (htype == FLOW_ACT_MANGLE_HDR_TYPE_IP6) {
2647                 struct ipv6_hoplimit_word *hoplimit_word =
2648                         (struct ipv6_hoplimit_word *)&mask;
2649
2650                 if (offset != offsetof(struct ipv6hdr, payload_len) ||
2651                     hoplimit_word->payload_len ||
2652                     hoplimit_word->nexthdr) {
2653                         return true;
2654                 }
2655         }
2656         return false;
2657 }
2658
2659 static bool modify_header_match_supported(struct mlx5_flow_spec *spec,
2660                                           struct flow_action *flow_action,
2661                                           u32 actions,
2662                                           struct netlink_ext_ack *extack)
2663 {
2664         const struct flow_action_entry *act;
2665         bool modify_ip_header;
2666         void *headers_v;
2667         u16 ethertype;
2668         u8 ip_proto;
2669         int i;
2670
2671         headers_v = get_match_headers_value(actions, spec);
2672         ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
2673
2674         /* for non-IP we only re-write MACs, so we're okay */
2675         if (ethertype != ETH_P_IP && ethertype != ETH_P_IPV6)
2676                 goto out_ok;
2677
2678         modify_ip_header = false;
2679         flow_action_for_each(i, act, flow_action) {
2680                 if (act->id != FLOW_ACTION_MANGLE &&
2681                     act->id != FLOW_ACTION_ADD)
2682                         continue;
2683
2684                 if (is_action_keys_supported(act)) {
2685                         modify_ip_header = true;
2686                         break;
2687                 }
2688         }
2689
2690         ip_proto = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ip_protocol);
2691         if (modify_ip_header && ip_proto != IPPROTO_TCP &&
2692             ip_proto != IPPROTO_UDP && ip_proto != IPPROTO_ICMP) {
2693                 NL_SET_ERR_MSG_MOD(extack,
2694                                    "can't offload re-write of non TCP/UDP");
2695                 pr_info("can't offload re-write of ip proto %d\n", ip_proto);
2696                 return false;
2697         }
2698
2699 out_ok:
2700         return true;
2701 }
2702
2703 static bool actions_match_supported(struct mlx5e_priv *priv,
2704                                     struct flow_action *flow_action,
2705                                     struct mlx5e_tc_flow_parse_attr *parse_attr,
2706                                     struct mlx5e_tc_flow *flow,
2707                                     struct netlink_ext_ack *extack)
2708 {
2709         u32 actions;
2710
2711         if (mlx5e_is_eswitch_flow(flow))
2712                 actions = flow->esw_attr->action;
2713         else
2714                 actions = flow->nic_attr->action;
2715
2716         if (flow_flag_test(flow, EGRESS) &&
2717             !((actions & MLX5_FLOW_CONTEXT_ACTION_DECAP) ||
2718               (actions & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) ||
2719               (actions & MLX5_FLOW_CONTEXT_ACTION_DROP)))
2720                 return false;
2721
2722         if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR)
2723                 return modify_header_match_supported(&parse_attr->spec,
2724                                                      flow_action, actions,
2725                                                      extack);
2726
2727         return true;
2728 }
2729
2730 static bool same_hw_devs(struct mlx5e_priv *priv, struct mlx5e_priv *peer_priv)
2731 {
2732         struct mlx5_core_dev *fmdev, *pmdev;
2733         u64 fsystem_guid, psystem_guid;
2734
2735         fmdev = priv->mdev;
2736         pmdev = peer_priv->mdev;
2737
2738         fsystem_guid = mlx5_query_nic_system_image_guid(fmdev);
2739         psystem_guid = mlx5_query_nic_system_image_guid(pmdev);
2740
2741         return (fsystem_guid == psystem_guid);
2742 }
2743
2744 static int add_vlan_rewrite_action(struct mlx5e_priv *priv, int namespace,
2745                                    const struct flow_action_entry *act,
2746                                    struct mlx5e_tc_flow_parse_attr *parse_attr,
2747                                    struct pedit_headers_action *hdrs,
2748                                    u32 *action, struct netlink_ext_ack *extack)
2749 {
2750         u16 mask16 = VLAN_VID_MASK;
2751         u16 val16 = act->vlan.vid & VLAN_VID_MASK;
2752         const struct flow_action_entry pedit_act = {
2753                 .id = FLOW_ACTION_MANGLE,
2754                 .mangle.htype = FLOW_ACT_MANGLE_HDR_TYPE_ETH,
2755                 .mangle.offset = offsetof(struct vlan_ethhdr, h_vlan_TCI),
2756                 .mangle.mask = ~(u32)be16_to_cpu(*(__be16 *)&mask16),
2757                 .mangle.val = (u32)be16_to_cpu(*(__be16 *)&val16),
2758         };
2759         u8 match_prio_mask, match_prio_val;
2760         void *headers_c, *headers_v;
2761         int err;
2762
2763         headers_c = get_match_headers_criteria(*action, &parse_attr->spec);
2764         headers_v = get_match_headers_value(*action, &parse_attr->spec);
2765
2766         if (!(MLX5_GET(fte_match_set_lyr_2_4, headers_c, cvlan_tag) &&
2767               MLX5_GET(fte_match_set_lyr_2_4, headers_v, cvlan_tag))) {
2768                 NL_SET_ERR_MSG_MOD(extack,
2769                                    "VLAN rewrite action must have VLAN protocol match");
2770                 return -EOPNOTSUPP;
2771         }
2772
2773         match_prio_mask = MLX5_GET(fte_match_set_lyr_2_4, headers_c, first_prio);
2774         match_prio_val = MLX5_GET(fte_match_set_lyr_2_4, headers_v, first_prio);
2775         if (act->vlan.prio != (match_prio_val & match_prio_mask)) {
2776                 NL_SET_ERR_MSG_MOD(extack,
2777                                    "Changing VLAN prio is not supported");
2778                 return -EOPNOTSUPP;
2779         }
2780
2781         err = parse_tc_pedit_action(priv, &pedit_act, namespace, parse_attr,
2782                                     hdrs, NULL);
2783         *action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
2784
2785         return err;
2786 }
2787
2788 static int
2789 add_vlan_prio_tag_rewrite_action(struct mlx5e_priv *priv,
2790                                  struct mlx5e_tc_flow_parse_attr *parse_attr,
2791                                  struct pedit_headers_action *hdrs,
2792                                  u32 *action, struct netlink_ext_ack *extack)
2793 {
2794         const struct flow_action_entry prio_tag_act = {
2795                 .vlan.vid = 0,
2796                 .vlan.prio =
2797                         MLX5_GET(fte_match_set_lyr_2_4,
2798                                  get_match_headers_value(*action,
2799                                                          &parse_attr->spec),
2800                                  first_prio) &
2801                         MLX5_GET(fte_match_set_lyr_2_4,
2802                                  get_match_headers_criteria(*action,
2803                                                             &parse_attr->spec),
2804                                  first_prio),
2805         };
2806
2807         return add_vlan_rewrite_action(priv, MLX5_FLOW_NAMESPACE_FDB,
2808                                        &prio_tag_act, parse_attr, hdrs, action,
2809                                        extack);
2810 }
2811
2812 static int parse_tc_nic_actions(struct mlx5e_priv *priv,
2813                                 struct flow_action *flow_action,
2814                                 struct mlx5e_tc_flow_parse_attr *parse_attr,
2815                                 struct mlx5e_tc_flow *flow,
2816                                 struct netlink_ext_ack *extack)
2817 {
2818         struct mlx5_nic_flow_attr *attr = flow->nic_attr;
2819         struct pedit_headers_action hdrs[2] = {};
2820         const struct flow_action_entry *act;
2821         u32 action = 0;
2822         int err, i;
2823
2824         if (!flow_action_has_entries(flow_action))
2825                 return -EINVAL;
2826
2827         attr->flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
2828
2829         flow_action_for_each(i, act, flow_action) {
2830                 switch (act->id) {
2831                 case FLOW_ACTION_DROP:
2832                         action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
2833                         if (MLX5_CAP_FLOWTABLE(priv->mdev,
2834                                                flow_table_properties_nic_receive.flow_counter))
2835                                 action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
2836                         break;
2837                 case FLOW_ACTION_MANGLE:
2838                 case FLOW_ACTION_ADD:
2839                         err = parse_tc_pedit_action(priv, act, MLX5_FLOW_NAMESPACE_KERNEL,
2840                                                     parse_attr, hdrs, extack);
2841                         if (err)
2842                                 return err;
2843
2844                         action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR |
2845                                   MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2846                         break;
2847                 case FLOW_ACTION_VLAN_MANGLE:
2848                         err = add_vlan_rewrite_action(priv,
2849                                                       MLX5_FLOW_NAMESPACE_KERNEL,
2850                                                       act, parse_attr, hdrs,
2851                                                       &action, extack);
2852                         if (err)
2853                                 return err;
2854
2855                         break;
2856                 case FLOW_ACTION_CSUM:
2857                         if (csum_offload_supported(priv, action,
2858                                                    act->csum_flags,
2859                                                    extack))
2860                                 break;
2861
2862                         return -EOPNOTSUPP;
2863                 case FLOW_ACTION_REDIRECT: {
2864                         struct net_device *peer_dev = act->dev;
2865
2866                         if (priv->netdev->netdev_ops == peer_dev->netdev_ops &&
2867                             same_hw_devs(priv, netdev_priv(peer_dev))) {
2868                                 parse_attr->mirred_ifindex[0] = peer_dev->ifindex;
2869                                 flow_flag_set(flow, HAIRPIN);
2870                                 action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
2871                                           MLX5_FLOW_CONTEXT_ACTION_COUNT;
2872                         } else {
2873                                 NL_SET_ERR_MSG_MOD(extack,
2874                                                    "device is not on same HW, can't offload");
2875                                 netdev_warn(priv->netdev, "device %s not on same HW, can't offload\n",
2876                                             peer_dev->name);
2877                                 return -EINVAL;
2878                         }
2879                         }
2880                         break;
2881                 case FLOW_ACTION_MARK: {
2882                         u32 mark = act->mark;
2883
2884                         if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
2885                                 NL_SET_ERR_MSG_MOD(extack,
2886                                                    "Bad flow mark - only 16 bit is supported");
2887                                 return -EINVAL;
2888                         }
2889
2890                         attr->flow_tag = mark;
2891                         action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
2892                         }
2893                         break;
2894                 default:
2895                         NL_SET_ERR_MSG_MOD(extack, "The offload action is not supported");
2896                         return -EOPNOTSUPP;
2897                 }
2898         }
2899
2900         if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits ||
2901             hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) {
2902                 err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_KERNEL,
2903                                             parse_attr, hdrs, &action, extack);
2904                 if (err)
2905                         return err;
2906                 /* in case all pedit actions are skipped, remove the MOD_HDR
2907                  * flag.
2908                  */
2909                 if (parse_attr->num_mod_hdr_actions == 0) {
2910                         action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
2911                         kfree(parse_attr->mod_hdr_actions);
2912                 }
2913         }
2914
2915         attr->action = action;
2916         if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack))
2917                 return -EOPNOTSUPP;
2918
2919         return 0;
2920 }
2921
2922 struct encap_key {
2923         const struct ip_tunnel_key *ip_tun_key;
2924         struct mlx5e_tc_tunnel *tc_tunnel;
2925 };
2926
2927 static inline int cmp_encap_info(struct encap_key *a,
2928                                  struct encap_key *b)
2929 {
2930         return memcmp(a->ip_tun_key, b->ip_tun_key, sizeof(*a->ip_tun_key)) ||
2931                a->tc_tunnel->tunnel_type != b->tc_tunnel->tunnel_type;
2932 }
2933
2934 static inline int hash_encap_info(struct encap_key *key)
2935 {
2936         return jhash(key->ip_tun_key, sizeof(*key->ip_tun_key),
2937                      key->tc_tunnel->tunnel_type);
2938 }
2939
2940
2941 static bool is_merged_eswitch_dev(struct mlx5e_priv *priv,
2942                                   struct net_device *peer_netdev)
2943 {
2944         struct mlx5e_priv *peer_priv;
2945
2946         peer_priv = netdev_priv(peer_netdev);
2947
2948         return (MLX5_CAP_ESW(priv->mdev, merged_eswitch) &&
2949                 mlx5e_eswitch_rep(priv->netdev) &&
2950                 mlx5e_eswitch_rep(peer_netdev) &&
2951                 same_hw_devs(priv, peer_priv));
2952 }
2953
2954
2955
2956 bool mlx5e_encap_take(struct mlx5e_encap_entry *e)
2957 {
2958         return refcount_inc_not_zero(&e->refcnt);
2959 }
2960
2961 static struct mlx5e_encap_entry *
2962 mlx5e_encap_get(struct mlx5e_priv *priv, struct encap_key *key,
2963                 uintptr_t hash_key)
2964 {
2965         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2966         struct mlx5e_encap_entry *e;
2967         struct encap_key e_key;
2968
2969         hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
2970                                    encap_hlist, hash_key) {
2971                 e_key.ip_tun_key = &e->tun_info->key;
2972                 e_key.tc_tunnel = e->tunnel;
2973                 if (!cmp_encap_info(&e_key, key) &&
2974                     mlx5e_encap_take(e))
2975                         return e;
2976         }
2977
2978         return NULL;
2979 }
2980
2981 static struct ip_tunnel_info *dup_tun_info(const struct ip_tunnel_info *tun_info)
2982 {
2983         size_t tun_size = sizeof(*tun_info) + tun_info->options_len;
2984
2985         return kmemdup(tun_info, tun_size, GFP_KERNEL);
2986 }
2987
2988 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
2989                               struct mlx5e_tc_flow *flow,
2990                               struct net_device *mirred_dev,
2991                               int out_index,
2992                               struct netlink_ext_ack *extack,
2993                               struct net_device **encap_dev,
2994                               bool *encap_valid)
2995 {
2996         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
2997         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
2998         struct mlx5e_tc_flow_parse_attr *parse_attr;
2999         const struct ip_tunnel_info *tun_info;
3000         struct encap_key key;
3001         struct mlx5e_encap_entry *e;
3002         unsigned short family;
3003         uintptr_t hash_key;
3004         int err = 0;
3005
3006         parse_attr = attr->parse_attr;
3007         tun_info = parse_attr->tun_info[out_index];
3008         family = ip_tunnel_info_af(tun_info);
3009         key.ip_tun_key = &tun_info->key;
3010         key.tc_tunnel = mlx5e_get_tc_tun(mirred_dev);
3011         if (!key.tc_tunnel) {
3012                 NL_SET_ERR_MSG_MOD(extack, "Unsupported tunnel");
3013                 return -EOPNOTSUPP;
3014         }
3015
3016         hash_key = hash_encap_info(&key);
3017
3018         mutex_lock(&esw->offloads.encap_tbl_lock);
3019         e = mlx5e_encap_get(priv, &key, hash_key);
3020
3021         /* must verify if encap is valid or not */
3022         if (e) {
3023                 mutex_unlock(&esw->offloads.encap_tbl_lock);
3024                 wait_for_completion(&e->res_ready);
3025
3026                 /* Protect against concurrent neigh update. */
3027                 mutex_lock(&esw->offloads.encap_tbl_lock);
3028                 if (e->compl_result < 0) {
3029                         err = -EREMOTEIO;
3030                         goto out_err;
3031                 }
3032                 goto attach_flow;
3033         }
3034
3035         e = kzalloc(sizeof(*e), GFP_KERNEL);
3036         if (!e) {
3037                 err = -ENOMEM;
3038                 goto out_err;
3039         }
3040
3041         refcount_set(&e->refcnt, 1);
3042         init_completion(&e->res_ready);
3043
3044         tun_info = dup_tun_info(tun_info);
3045         if (!tun_info) {
3046                 err = -ENOMEM;
3047                 goto out_err_init;
3048         }
3049         e->tun_info = tun_info;
3050         err = mlx5e_tc_tun_init_encap_attr(mirred_dev, priv, e, extack);
3051         if (err)
3052                 goto out_err_init;
3053
3054         INIT_LIST_HEAD(&e->flows);
3055         hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
3056         mutex_unlock(&esw->offloads.encap_tbl_lock);
3057
3058         if (family == AF_INET)
3059                 err = mlx5e_tc_tun_create_header_ipv4(priv, mirred_dev, e);
3060         else if (family == AF_INET6)
3061                 err = mlx5e_tc_tun_create_header_ipv6(priv, mirred_dev, e);
3062
3063         /* Protect against concurrent neigh update. */
3064         mutex_lock(&esw->offloads.encap_tbl_lock);
3065         complete_all(&e->res_ready);
3066         if (err) {
3067                 e->compl_result = err;
3068                 goto out_err;
3069         }
3070         e->compl_result = 1;
3071
3072 attach_flow:
3073         flow->encaps[out_index].e = e;
3074         list_add(&flow->encaps[out_index].list, &e->flows);
3075         flow->encaps[out_index].index = out_index;
3076         *encap_dev = e->out_dev;
3077         if (e->flags & MLX5_ENCAP_ENTRY_VALID) {
3078                 attr->dests[out_index].pkt_reformat = e->pkt_reformat;
3079                 attr->dests[out_index].flags |= MLX5_ESW_DEST_ENCAP_VALID;
3080                 *encap_valid = true;
3081         } else {
3082                 *encap_valid = false;
3083         }
3084         mutex_unlock(&esw->offloads.encap_tbl_lock);
3085
3086         return err;
3087
3088 out_err:
3089         mutex_unlock(&esw->offloads.encap_tbl_lock);
3090         if (e)
3091                 mlx5e_encap_put(priv, e);
3092         return err;
3093
3094 out_err_init:
3095         mutex_unlock(&esw->offloads.encap_tbl_lock);
3096         kfree(tun_info);
3097         kfree(e);
3098         return err;
3099 }
3100
3101 static int parse_tc_vlan_action(struct mlx5e_priv *priv,
3102                                 const struct flow_action_entry *act,
3103                                 struct mlx5_esw_flow_attr *attr,
3104                                 u32 *action)
3105 {
3106         u8 vlan_idx = attr->total_vlan;
3107
3108         if (vlan_idx >= MLX5_FS_VLAN_DEPTH)
3109                 return -EOPNOTSUPP;
3110
3111         switch (act->id) {
3112         case FLOW_ACTION_VLAN_POP:
3113                 if (vlan_idx) {
3114                         if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
3115                                                                  MLX5_FS_VLAN_DEPTH))
3116                                 return -EOPNOTSUPP;
3117
3118                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP_2;
3119                 } else {
3120                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
3121                 }
3122                 break;
3123         case FLOW_ACTION_VLAN_PUSH:
3124                 attr->vlan_vid[vlan_idx] = act->vlan.vid;
3125                 attr->vlan_prio[vlan_idx] = act->vlan.prio;
3126                 attr->vlan_proto[vlan_idx] = act->vlan.proto;
3127                 if (!attr->vlan_proto[vlan_idx])
3128                         attr->vlan_proto[vlan_idx] = htons(ETH_P_8021Q);
3129
3130                 if (vlan_idx) {
3131                         if (!mlx5_eswitch_vlan_actions_supported(priv->mdev,
3132                                                                  MLX5_FS_VLAN_DEPTH))
3133                                 return -EOPNOTSUPP;
3134
3135                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH_2;
3136                 } else {
3137                         if (!mlx5_eswitch_vlan_actions_supported(priv->mdev, 1) &&
3138                             (act->vlan.proto != htons(ETH_P_8021Q) ||
3139                              act->vlan.prio))
3140                                 return -EOPNOTSUPP;
3141
3142                         *action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
3143                 }
3144                 break;
3145         default:
3146                 return -EINVAL;
3147         }
3148
3149         attr->total_vlan = vlan_idx + 1;
3150
3151         return 0;
3152 }
3153
3154 static int add_vlan_push_action(struct mlx5e_priv *priv,
3155                                 struct mlx5_esw_flow_attr *attr,
3156                                 struct net_device **out_dev,
3157                                 u32 *action)
3158 {
3159         struct net_device *vlan_dev = *out_dev;
3160         struct flow_action_entry vlan_act = {
3161                 .id = FLOW_ACTION_VLAN_PUSH,
3162                 .vlan.vid = vlan_dev_vlan_id(vlan_dev),
3163                 .vlan.proto = vlan_dev_vlan_proto(vlan_dev),
3164                 .vlan.prio = 0,
3165         };
3166         int err;
3167
3168         err = parse_tc_vlan_action(priv, &vlan_act, attr, action);
3169         if (err)
3170                 return err;
3171
3172         *out_dev = dev_get_by_index_rcu(dev_net(vlan_dev),
3173                                         dev_get_iflink(vlan_dev));
3174         if (is_vlan_dev(*out_dev))
3175                 err = add_vlan_push_action(priv, attr, out_dev, action);
3176
3177         return err;
3178 }
3179
3180 static int add_vlan_pop_action(struct mlx5e_priv *priv,
3181                                struct mlx5_esw_flow_attr *attr,
3182                                u32 *action)
3183 {
3184         int nest_level = attr->parse_attr->filter_dev->lower_level;
3185         struct flow_action_entry vlan_act = {
3186                 .id = FLOW_ACTION_VLAN_POP,
3187         };
3188         int err = 0;
3189
3190         while (nest_level--) {
3191                 err = parse_tc_vlan_action(priv, &vlan_act, attr, action);
3192                 if (err)
3193                         return err;
3194         }
3195
3196         return err;
3197 }
3198
3199 bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv,
3200                                     struct net_device *out_dev)
3201 {
3202         if (is_merged_eswitch_dev(priv, out_dev))
3203                 return true;
3204
3205         return mlx5e_eswitch_rep(out_dev) &&
3206                same_hw_devs(priv, netdev_priv(out_dev));
3207 }
3208
3209 static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
3210                                 struct flow_action *flow_action,
3211                                 struct mlx5e_tc_flow *flow,
3212                                 struct netlink_ext_ack *extack)
3213 {
3214         struct pedit_headers_action hdrs[2] = {};
3215         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3216         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
3217         struct mlx5e_tc_flow_parse_attr *parse_attr = attr->parse_attr;
3218         struct mlx5e_rep_priv *rpriv = priv->ppriv;
3219         const struct ip_tunnel_info *info = NULL;
3220         const struct flow_action_entry *act;
3221         bool encap = false;
3222         u32 action = 0;
3223         int err, i;
3224
3225         if (!flow_action_has_entries(flow_action))
3226                 return -EINVAL;
3227
3228         flow_action_for_each(i, act, flow_action) {
3229                 switch (act->id) {
3230                 case FLOW_ACTION_DROP:
3231                         action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
3232                                   MLX5_FLOW_CONTEXT_ACTION_COUNT;
3233                         break;
3234                 case FLOW_ACTION_MANGLE:
3235                 case FLOW_ACTION_ADD:
3236                         err = parse_tc_pedit_action(priv, act, MLX5_FLOW_NAMESPACE_FDB,
3237                                                     parse_attr, hdrs, extack);
3238                         if (err)
3239                                 return err;
3240
3241                         action |= MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
3242                         attr->split_count = attr->out_count;
3243                         break;
3244                 case FLOW_ACTION_CSUM:
3245                         if (csum_offload_supported(priv, action,
3246                                                    act->csum_flags, extack))
3247                                 break;
3248
3249                         return -EOPNOTSUPP;
3250                 case FLOW_ACTION_REDIRECT:
3251                 case FLOW_ACTION_MIRRED: {
3252                         struct mlx5e_priv *out_priv;
3253                         struct net_device *out_dev;
3254
3255                         out_dev = act->dev;
3256                         if (!out_dev) {
3257                                 /* out_dev is NULL when filters with
3258                                  * non-existing mirred device are replayed to
3259                                  * the driver.
3260                                  */
3261                                 return -EINVAL;
3262                         }
3263
3264                         if (attr->out_count >= MLX5_MAX_FLOW_FWD_VPORTS) {
3265                                 NL_SET_ERR_MSG_MOD(extack,
3266                                                    "can't support more output ports, can't offload forwarding");
3267                                 pr_err("can't support more than %d output ports, can't offload forwarding\n",
3268                                        attr->out_count);
3269                                 return -EOPNOTSUPP;
3270                         }
3271
3272                         action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
3273                                   MLX5_FLOW_CONTEXT_ACTION_COUNT;
3274                         if (netdev_port_same_parent_id(priv->netdev, out_dev)) {
3275                                 struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3276                                 struct net_device *uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH);
3277                                 struct net_device *uplink_upper;
3278
3279                                 rcu_read_lock();
3280                                 uplink_upper =
3281                                         netdev_master_upper_dev_get_rcu(uplink_dev);
3282                                 if (uplink_upper &&
3283                                     netif_is_lag_master(uplink_upper) &&
3284                                     uplink_upper == out_dev)
3285                                         out_dev = uplink_dev;
3286                                 rcu_read_unlock();
3287
3288                                 if (is_vlan_dev(out_dev)) {
3289                                         err = add_vlan_push_action(priv, attr,
3290                                                                    &out_dev,
3291                                                                    &action);
3292                                         if (err)
3293                                                 return err;
3294                                 }
3295
3296                                 if (is_vlan_dev(parse_attr->filter_dev)) {
3297                                         err = add_vlan_pop_action(priv, attr,
3298                                                                   &action);
3299                                         if (err)
3300                                                 return err;
3301                                 }
3302
3303                                 if (!mlx5e_is_valid_eswitch_fwd_dev(priv, out_dev)) {
3304                                         NL_SET_ERR_MSG_MOD(extack,
3305                                                            "devices are not on same switch HW, can't offload forwarding");
3306                                         pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
3307                                                priv->netdev->name, out_dev->name);
3308                                         return -EOPNOTSUPP;
3309                                 }
3310
3311                                 out_priv = netdev_priv(out_dev);
3312                                 rpriv = out_priv->ppriv;
3313                                 attr->dests[attr->out_count].rep = rpriv->rep;
3314                                 attr->dests[attr->out_count].mdev = out_priv->mdev;
3315                                 attr->out_count++;
3316                         } else if (encap) {
3317                                 parse_attr->mirred_ifindex[attr->out_count] =
3318                                         out_dev->ifindex;
3319                                 parse_attr->tun_info[attr->out_count] = dup_tun_info(info);
3320                                 if (!parse_attr->tun_info[attr->out_count])
3321                                         return -ENOMEM;
3322                                 encap = false;
3323                                 attr->dests[attr->out_count].flags |=
3324                                         MLX5_ESW_DEST_ENCAP;
3325                                 attr->out_count++;
3326                                 /* attr->dests[].rep is resolved when we
3327                                  * handle encap
3328                                  */
3329                         } else if (parse_attr->filter_dev != priv->netdev) {
3330                                 /* All mlx5 devices are called to configure
3331                                  * high level device filters. Therefore, the
3332                                  * *attempt* to  install a filter on invalid
3333                                  * eswitch should not trigger an explicit error
3334                                  */
3335                                 return -EINVAL;
3336                         } else {
3337                                 NL_SET_ERR_MSG_MOD(extack,
3338                                                    "devices are not on same switch HW, can't offload forwarding");
3339                                 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
3340                                        priv->netdev->name, out_dev->name);
3341                                 return -EINVAL;
3342                         }
3343                         }
3344                         break;
3345                 case FLOW_ACTION_TUNNEL_ENCAP:
3346                         info = act->tunnel;
3347                         if (info)
3348                                 encap = true;
3349                         else
3350                                 return -EOPNOTSUPP;
3351
3352                         break;
3353                 case FLOW_ACTION_VLAN_PUSH:
3354                 case FLOW_ACTION_VLAN_POP:
3355                         if (act->id == FLOW_ACTION_VLAN_PUSH &&
3356                             (action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP)) {
3357                                 /* Replace vlan pop+push with vlan modify */
3358                                 action &= ~MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
3359                                 err = add_vlan_rewrite_action(priv,
3360                                                               MLX5_FLOW_NAMESPACE_FDB,
3361                                                               act, parse_attr, hdrs,
3362                                                               &action, extack);
3363                         } else {
3364                                 err = parse_tc_vlan_action(priv, act, attr, &action);
3365                         }
3366                         if (err)
3367                                 return err;
3368
3369                         attr->split_count = attr->out_count;
3370                         break;
3371                 case FLOW_ACTION_VLAN_MANGLE:
3372                         err = add_vlan_rewrite_action(priv,
3373                                                       MLX5_FLOW_NAMESPACE_FDB,
3374                                                       act, parse_attr, hdrs,
3375                                                       &action, extack);
3376                         if (err)
3377                                 return err;
3378
3379                         attr->split_count = attr->out_count;
3380                         break;
3381                 case FLOW_ACTION_TUNNEL_DECAP:
3382                         action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
3383                         break;
3384                 case FLOW_ACTION_GOTO: {
3385                         u32 dest_chain = act->chain_index;
3386                         u32 max_chain = mlx5_eswitch_get_chain_range(esw);
3387
3388                         if (dest_chain <= attr->chain) {
3389                                 NL_SET_ERR_MSG(extack, "Goto earlier chain isn't supported");
3390                                 return -EOPNOTSUPP;
3391                         }
3392                         if (dest_chain > max_chain) {
3393                                 NL_SET_ERR_MSG(extack, "Requested destination chain is out of supported range");
3394                                 return -EOPNOTSUPP;
3395                         }
3396                         action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
3397                         attr->dest_chain = dest_chain;
3398                         break;
3399                         }
3400                 default:
3401                         NL_SET_ERR_MSG_MOD(extack, "The offload action is not supported");
3402                         return -EOPNOTSUPP;
3403                 }
3404         }
3405
3406         if (MLX5_CAP_GEN(esw->dev, prio_tag_required) &&
3407             action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) {
3408                 /* For prio tag mode, replace vlan pop with rewrite vlan prio
3409                  * tag rewrite.
3410                  */
3411                 action &= ~MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
3412                 err = add_vlan_prio_tag_rewrite_action(priv, parse_attr, hdrs,
3413                                                        &action, extack);
3414                 if (err)
3415                         return err;
3416         }
3417
3418         if (hdrs[TCA_PEDIT_KEY_EX_CMD_SET].pedits ||
3419             hdrs[TCA_PEDIT_KEY_EX_CMD_ADD].pedits) {
3420                 err = alloc_tc_pedit_action(priv, MLX5_FLOW_NAMESPACE_FDB,
3421                                             parse_attr, hdrs, &action, extack);
3422                 if (err)
3423                         return err;
3424                 /* in case all pedit actions are skipped, remove the MOD_HDR
3425                  * flag. we might have set split_count either by pedit or
3426                  * pop/push. if there is no pop/push either, reset it too.
3427                  */
3428                 if (parse_attr->num_mod_hdr_actions == 0) {
3429                         action &= ~MLX5_FLOW_CONTEXT_ACTION_MOD_HDR;
3430                         kfree(parse_attr->mod_hdr_actions);
3431                         if (!((action & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) ||
3432                               (action & MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH)))
3433                                 attr->split_count = 0;
3434                 }
3435         }
3436
3437         attr->action = action;
3438         if (!actions_match_supported(priv, flow_action, parse_attr, flow, extack))
3439                 return -EOPNOTSUPP;
3440
3441         if (attr->dest_chain) {
3442                 if (attr->action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
3443                         NL_SET_ERR_MSG(extack, "Mirroring goto chain rules isn't supported");
3444                         return -EOPNOTSUPP;
3445                 }
3446                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
3447         }
3448
3449         if (!(attr->action &
3450               (MLX5_FLOW_CONTEXT_ACTION_FWD_DEST | MLX5_FLOW_CONTEXT_ACTION_DROP))) {
3451                 NL_SET_ERR_MSG(extack, "Rule must have at least one forward/drop action");
3452                 return -EOPNOTSUPP;
3453         }
3454
3455         if (attr->split_count > 0 && !mlx5_esw_has_fwd_fdb(priv->mdev)) {
3456                 NL_SET_ERR_MSG_MOD(extack,
3457                                    "current firmware doesn't support split rule for port mirroring");
3458                 netdev_warn_once(priv->netdev, "current firmware doesn't support split rule for port mirroring\n");
3459                 return -EOPNOTSUPP;
3460         }
3461
3462         return 0;
3463 }
3464
3465 static void get_flags(int flags, unsigned long *flow_flags)
3466 {
3467         unsigned long __flow_flags = 0;
3468
3469         if (flags & MLX5_TC_FLAG(INGRESS))
3470                 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_INGRESS);
3471         if (flags & MLX5_TC_FLAG(EGRESS))
3472                 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_EGRESS);
3473
3474         if (flags & MLX5_TC_FLAG(ESW_OFFLOAD))
3475                 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH);
3476         if (flags & MLX5_TC_FLAG(NIC_OFFLOAD))
3477                 __flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC);
3478
3479         *flow_flags = __flow_flags;
3480 }
3481
3482 static const struct rhashtable_params tc_ht_params = {
3483         .head_offset = offsetof(struct mlx5e_tc_flow, node),
3484         .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
3485         .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
3486         .automatic_shrinking = true,
3487 };
3488
3489 static struct rhashtable *get_tc_ht(struct mlx5e_priv *priv,
3490                                     unsigned long flags)
3491 {
3492         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3493         struct mlx5e_rep_priv *uplink_rpriv;
3494
3495         if (flags & MLX5_TC_FLAG(ESW_OFFLOAD)) {
3496                 uplink_rpriv = mlx5_eswitch_get_uplink_priv(esw, REP_ETH);
3497                 return &uplink_rpriv->uplink_priv.tc_ht;
3498         } else /* NIC offload */
3499                 return &priv->fs.tc.ht;
3500 }
3501
3502 static bool is_peer_flow_needed(struct mlx5e_tc_flow *flow)
3503 {
3504         struct mlx5_esw_flow_attr *attr = flow->esw_attr;
3505         bool is_rep_ingress = attr->in_rep->vport != MLX5_VPORT_UPLINK &&
3506                 flow_flag_test(flow, INGRESS);
3507         bool act_is_encap = !!(attr->action &
3508                                MLX5_FLOW_CONTEXT_ACTION_PACKET_REFORMAT);
3509         bool esw_paired = mlx5_devcom_is_paired(attr->in_mdev->priv.devcom,
3510                                                 MLX5_DEVCOM_ESW_OFFLOADS);
3511
3512         if (!esw_paired)
3513                 return false;
3514
3515         if ((mlx5_lag_is_sriov(attr->in_mdev) ||
3516              mlx5_lag_is_multipath(attr->in_mdev)) &&
3517             (is_rep_ingress || act_is_encap))
3518                 return true;
3519
3520         return false;
3521 }
3522
3523 static int
3524 mlx5e_alloc_flow(struct mlx5e_priv *priv, int attr_size,
3525                  struct flow_cls_offload *f, unsigned long flow_flags,
3526                  struct mlx5e_tc_flow_parse_attr **__parse_attr,
3527                  struct mlx5e_tc_flow **__flow)
3528 {
3529         struct mlx5e_tc_flow_parse_attr *parse_attr;
3530         struct mlx5e_tc_flow *flow;
3531         int out_index, err;
3532
3533         flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
3534         parse_attr = kvzalloc(sizeof(*parse_attr), GFP_KERNEL);
3535         if (!parse_attr || !flow) {
3536                 err = -ENOMEM;
3537                 goto err_free;
3538         }
3539
3540         flow->cookie = f->cookie;
3541         flow->flags = flow_flags;
3542         flow->priv = priv;
3543         for (out_index = 0; out_index < MLX5_MAX_FLOW_FWD_VPORTS; out_index++)
3544                 INIT_LIST_HEAD(&flow->encaps[out_index].list);
3545         INIT_LIST_HEAD(&flow->mod_hdr);
3546         INIT_LIST_HEAD(&flow->hairpin);
3547         refcount_set(&flow->refcnt, 1);
3548         init_completion(&flow->init_done);
3549
3550         *__flow = flow;
3551         *__parse_attr = parse_attr;
3552
3553         return 0;
3554
3555 err_free:
3556         kfree(flow);
3557         kvfree(parse_attr);
3558         return err;
3559 }
3560
3561 static void
3562 mlx5e_flow_esw_attr_init(struct mlx5_esw_flow_attr *esw_attr,
3563                          struct mlx5e_priv *priv,
3564                          struct mlx5e_tc_flow_parse_attr *parse_attr,
3565                          struct flow_cls_offload *f,
3566                          struct mlx5_eswitch_rep *in_rep,
3567                          struct mlx5_core_dev *in_mdev)
3568 {
3569         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3570
3571         esw_attr->parse_attr = parse_attr;
3572         esw_attr->chain = f->common.chain_index;
3573         esw_attr->prio = f->common.prio;
3574
3575         esw_attr->in_rep = in_rep;
3576         esw_attr->in_mdev = in_mdev;
3577
3578         if (MLX5_CAP_ESW(esw->dev, counter_eswitch_affinity) ==
3579             MLX5_COUNTER_SOURCE_ESWITCH)
3580                 esw_attr->counter_dev = in_mdev;
3581         else
3582                 esw_attr->counter_dev = priv->mdev;
3583 }
3584
3585 static struct mlx5e_tc_flow *
3586 __mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
3587                      struct flow_cls_offload *f,
3588                      unsigned long flow_flags,
3589                      struct net_device *filter_dev,
3590                      struct mlx5_eswitch_rep *in_rep,
3591                      struct mlx5_core_dev *in_mdev)
3592 {
3593         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
3594         struct netlink_ext_ack *extack = f->common.extack;
3595         struct mlx5e_tc_flow_parse_attr *parse_attr;
3596         struct mlx5e_tc_flow *flow;
3597         int attr_size, err;
3598
3599         flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_ESWITCH);
3600         attr_size  = sizeof(struct mlx5_esw_flow_attr);
3601         err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
3602                                &parse_attr, &flow);
3603         if (err)
3604                 goto out;
3605
3606         parse_attr->filter_dev = filter_dev;
3607         mlx5e_flow_esw_attr_init(flow->esw_attr,
3608                                  priv, parse_attr,
3609                                  f, in_rep, in_mdev);
3610
3611         err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
3612                                f, filter_dev);
3613         if (err)
3614                 goto err_free;
3615
3616         err = parse_tc_fdb_actions(priv, &rule->action, flow, extack);
3617         if (err)
3618                 goto err_free;
3619
3620         err = mlx5e_tc_add_fdb_flow(priv, flow, extack);
3621         complete_all(&flow->init_done);
3622         if (err) {
3623                 if (!(err == -ENETUNREACH && mlx5_lag_is_multipath(in_mdev)))
3624                         goto err_free;
3625
3626                 add_unready_flow(flow);
3627         }
3628
3629         return flow;
3630
3631 err_free:
3632         mlx5e_flow_put(priv, flow);
3633 out:
3634         return ERR_PTR(err);
3635 }
3636
3637 static int mlx5e_tc_add_fdb_peer_flow(struct flow_cls_offload *f,
3638                                       struct mlx5e_tc_flow *flow,
3639                                       unsigned long flow_flags)
3640 {
3641         struct mlx5e_priv *priv = flow->priv, *peer_priv;
3642         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch, *peer_esw;
3643         struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
3644         struct mlx5e_tc_flow_parse_attr *parse_attr;
3645         struct mlx5e_rep_priv *peer_urpriv;
3646         struct mlx5e_tc_flow *peer_flow;
3647         struct mlx5_core_dev *in_mdev;
3648         int err = 0;
3649
3650         peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3651         if (!peer_esw)
3652                 return -ENODEV;
3653
3654         peer_urpriv = mlx5_eswitch_get_uplink_priv(peer_esw, REP_ETH);
3655         peer_priv = netdev_priv(peer_urpriv->netdev);
3656
3657         /* in_mdev is assigned of which the packet originated from.
3658          * So packets redirected to uplink use the same mdev of the
3659          * original flow and packets redirected from uplink use the
3660          * peer mdev.
3661          */
3662         if (flow->esw_attr->in_rep->vport == MLX5_VPORT_UPLINK)
3663                 in_mdev = peer_priv->mdev;
3664         else
3665                 in_mdev = priv->mdev;
3666
3667         parse_attr = flow->esw_attr->parse_attr;
3668         peer_flow = __mlx5e_add_fdb_flow(peer_priv, f, flow_flags,
3669                                          parse_attr->filter_dev,
3670                                          flow->esw_attr->in_rep, in_mdev);
3671         if (IS_ERR(peer_flow)) {
3672                 err = PTR_ERR(peer_flow);
3673                 goto out;
3674         }
3675
3676         flow->peer_flow = peer_flow;
3677         flow_flag_set(flow, DUP);
3678         mutex_lock(&esw->offloads.peer_mutex);
3679         list_add_tail(&flow->peer, &esw->offloads.peer_flows);
3680         mutex_unlock(&esw->offloads.peer_mutex);
3681
3682 out:
3683         mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3684         return err;
3685 }
3686
3687 static int
3688 mlx5e_add_fdb_flow(struct mlx5e_priv *priv,
3689                    struct flow_cls_offload *f,
3690                    unsigned long flow_flags,
3691                    struct net_device *filter_dev,
3692                    struct mlx5e_tc_flow **__flow)
3693 {
3694         struct mlx5e_rep_priv *rpriv = priv->ppriv;
3695         struct mlx5_eswitch_rep *in_rep = rpriv->rep;
3696         struct mlx5_core_dev *in_mdev = priv->mdev;
3697         struct mlx5e_tc_flow *flow;
3698         int err;
3699
3700         flow = __mlx5e_add_fdb_flow(priv, f, flow_flags, filter_dev, in_rep,
3701                                     in_mdev);
3702         if (IS_ERR(flow))
3703                 return PTR_ERR(flow);
3704
3705         if (is_peer_flow_needed(flow)) {
3706                 err = mlx5e_tc_add_fdb_peer_flow(f, flow, flow_flags);
3707                 if (err) {
3708                         mlx5e_tc_del_fdb_flow(priv, flow);
3709                         goto out;
3710                 }
3711         }
3712
3713         *__flow = flow;
3714
3715         return 0;
3716
3717 out:
3718         return err;
3719 }
3720
3721 static int
3722 mlx5e_add_nic_flow(struct mlx5e_priv *priv,
3723                    struct flow_cls_offload *f,
3724                    unsigned long flow_flags,
3725                    struct net_device *filter_dev,
3726                    struct mlx5e_tc_flow **__flow)
3727 {
3728         struct flow_rule *rule = flow_cls_offload_flow_rule(f);
3729         struct netlink_ext_ack *extack = f->common.extack;
3730         struct mlx5e_tc_flow_parse_attr *parse_attr;
3731         struct mlx5e_tc_flow *flow;
3732         int attr_size, err;
3733
3734         /* multi-chain not supported for NIC rules */
3735         if (!tc_cls_can_offload_and_chain0(priv->netdev, &f->common))
3736                 return -EOPNOTSUPP;
3737
3738         flow_flags |= BIT(MLX5E_TC_FLOW_FLAG_NIC);
3739         attr_size  = sizeof(struct mlx5_nic_flow_attr);
3740         err = mlx5e_alloc_flow(priv, attr_size, f, flow_flags,
3741                                &parse_attr, &flow);
3742         if (err)
3743                 goto out;
3744
3745         parse_attr->filter_dev = filter_dev;
3746         err = parse_cls_flower(flow->priv, flow, &parse_attr->spec,
3747                                f, filter_dev);
3748         if (err)
3749                 goto err_free;
3750
3751         err = parse_tc_nic_actions(priv, &rule->action, parse_attr, flow, extack);
3752         if (err)
3753                 goto err_free;
3754
3755         err = mlx5e_tc_add_nic_flow(priv, parse_attr, flow, extack);
3756         if (err)
3757                 goto err_free;
3758
3759         flow_flag_set(flow, OFFLOADED);
3760         kvfree(parse_attr);
3761         *__flow = flow;
3762
3763         return 0;
3764
3765 err_free:
3766         mlx5e_flow_put(priv, flow);
3767         kvfree(parse_attr);
3768 out:
3769         return err;
3770 }
3771
3772 static int
3773 mlx5e_tc_add_flow(struct mlx5e_priv *priv,
3774                   struct flow_cls_offload *f,
3775                   unsigned long flags,
3776                   struct net_device *filter_dev,
3777                   struct mlx5e_tc_flow **flow)
3778 {
3779         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
3780         unsigned long flow_flags;
3781         int err;
3782
3783         get_flags(flags, &flow_flags);
3784
3785         if (!tc_can_offload_extack(priv->netdev, f->common.extack))
3786                 return -EOPNOTSUPP;
3787
3788         if (esw && esw->mode == MLX5_ESWITCH_OFFLOADS)
3789                 err = mlx5e_add_fdb_flow(priv, f, flow_flags,
3790                                          filter_dev, flow);
3791         else
3792                 err = mlx5e_add_nic_flow(priv, f, flow_flags,
3793                                          filter_dev, flow);
3794
3795         return err;
3796 }
3797
3798 int mlx5e_configure_flower(struct net_device *dev, struct mlx5e_priv *priv,
3799                            struct flow_cls_offload *f, unsigned long flags)
3800 {
3801         struct netlink_ext_ack *extack = f->common.extack;
3802         struct rhashtable *tc_ht = get_tc_ht(priv, flags);
3803         struct mlx5e_tc_flow *flow;
3804         int err = 0;
3805
3806         rcu_read_lock();
3807         flow = rhashtable_lookup(tc_ht, &f->cookie, tc_ht_params);
3808         rcu_read_unlock();
3809         if (flow) {
3810                 NL_SET_ERR_MSG_MOD(extack,
3811                                    "flow cookie already exists, ignoring");
3812                 netdev_warn_once(priv->netdev,
3813                                  "flow cookie %lx already exists, ignoring\n",
3814                                  f->cookie);
3815                 err = -EEXIST;
3816                 goto out;
3817         }
3818
3819         trace_mlx5e_configure_flower(f);
3820         err = mlx5e_tc_add_flow(priv, f, flags, dev, &flow);
3821         if (err)
3822                 goto out;
3823
3824         err = rhashtable_lookup_insert_fast(tc_ht, &flow->node, tc_ht_params);
3825         if (err)
3826                 goto err_free;
3827
3828         return 0;
3829
3830 err_free:
3831         mlx5e_flow_put(priv, flow);
3832 out:
3833         return err;
3834 }
3835
3836 static bool same_flow_direction(struct mlx5e_tc_flow *flow, int flags)
3837 {
3838         bool dir_ingress = !!(flags & MLX5_TC_FLAG(INGRESS));
3839         bool dir_egress = !!(flags & MLX5_TC_FLAG(EGRESS));
3840
3841         return flow_flag_test(flow, INGRESS) == dir_ingress &&
3842                 flow_flag_test(flow, EGRESS) == dir_egress;
3843 }
3844
3845 int mlx5e_delete_flower(struct net_device *dev, struct mlx5e_priv *priv,
3846                         struct flow_cls_offload *f, unsigned long flags)
3847 {
3848         struct rhashtable *tc_ht = get_tc_ht(priv, flags);
3849         struct mlx5e_tc_flow *flow;
3850         int err;
3851
3852         rcu_read_lock();
3853         flow = rhashtable_lookup_fast(tc_ht, &f->cookie, tc_ht_params);
3854         if (!flow || !same_flow_direction(flow, flags)) {
3855                 err = -EINVAL;
3856                 goto errout;
3857         }
3858
3859         /* Only delete the flow if it doesn't have MLX5E_TC_FLOW_DELETED flag
3860          * set.
3861          */
3862         if (flow_flag_test_and_set(flow, DELETED)) {
3863                 err = -EINVAL;
3864                 goto errout;
3865         }
3866         rhashtable_remove_fast(tc_ht, &flow->node, tc_ht_params);
3867         rcu_read_unlock();
3868
3869         trace_mlx5e_delete_flower(f);
3870         mlx5e_flow_put(priv, flow);
3871
3872         return 0;
3873
3874 errout:
3875         rcu_read_unlock();
3876         return err;
3877 }
3878
3879 int mlx5e_stats_flower(struct net_device *dev, struct mlx5e_priv *priv,
3880                        struct flow_cls_offload *f, unsigned long flags)
3881 {
3882         struct mlx5_devcom *devcom = priv->mdev->priv.devcom;
3883         struct rhashtable *tc_ht = get_tc_ht(priv, flags);
3884         struct mlx5_eswitch *peer_esw;
3885         struct mlx5e_tc_flow *flow;
3886         struct mlx5_fc *counter;
3887         u64 lastuse = 0;
3888         u64 packets = 0;
3889         u64 bytes = 0;
3890         int err = 0;
3891
3892         rcu_read_lock();
3893         flow = mlx5e_flow_get(rhashtable_lookup(tc_ht, &f->cookie,
3894                                                 tc_ht_params));
3895         rcu_read_unlock();
3896         if (IS_ERR(flow))
3897                 return PTR_ERR(flow);
3898
3899         if (!same_flow_direction(flow, flags)) {
3900                 err = -EINVAL;
3901                 goto errout;
3902         }
3903
3904         if (mlx5e_is_offloaded_flow(flow)) {
3905                 counter = mlx5e_tc_get_counter(flow);
3906                 if (!counter)
3907                         goto errout;
3908
3909                 mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
3910         }
3911
3912         /* Under multipath it's possible for one rule to be currently
3913          * un-offloaded while the other rule is offloaded.
3914          */
3915         peer_esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3916         if (!peer_esw)
3917                 goto out;
3918
3919         if (flow_flag_test(flow, DUP) &&
3920             flow_flag_test(flow->peer_flow, OFFLOADED)) {
3921                 u64 bytes2;
3922                 u64 packets2;
3923                 u64 lastuse2;
3924
3925                 counter = mlx5e_tc_get_counter(flow->peer_flow);
3926                 if (!counter)
3927                         goto no_peer_counter;
3928                 mlx5_fc_query_cached(counter, &bytes2, &packets2, &lastuse2);
3929
3930                 bytes += bytes2;
3931                 packets += packets2;
3932                 lastuse = max_t(u64, lastuse, lastuse2);
3933         }
3934
3935 no_peer_counter:
3936         mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS);
3937 out:
3938         flow_stats_update(&f->stats, bytes, packets, lastuse);
3939         trace_mlx5e_stats_flower(f);
3940 errout:
3941         mlx5e_flow_put(priv, flow);
3942         return err;
3943 }
3944
3945 static int apply_police_params(struct mlx5e_priv *priv, u32 rate,
3946                                struct netlink_ext_ack *extack)
3947 {
3948         struct mlx5e_rep_priv *rpriv = priv->ppriv;
3949         struct mlx5_eswitch *esw;
3950         u16 vport_num;
3951         u32 rate_mbps;
3952         int err;
3953
3954         esw = priv->mdev->priv.eswitch;
3955         /* rate is given in bytes/sec.
3956          * First convert to bits/sec and then round to the nearest mbit/secs.
3957          * mbit means million bits.
3958          * Moreover, if rate is non zero we choose to configure to a minimum of
3959          * 1 mbit/sec.
3960          */
3961         rate_mbps = rate ? max_t(u32, (rate * 8 + 500000) / 1000000, 1) : 0;
3962         vport_num = rpriv->rep->vport;
3963
3964         err = mlx5_esw_modify_vport_rate(esw, vport_num, rate_mbps);
3965         if (err)
3966                 NL_SET_ERR_MSG_MOD(extack, "failed applying action to hardware");
3967
3968         return err;
3969 }
3970
3971 static int scan_tc_matchall_fdb_actions(struct mlx5e_priv *priv,
3972                                         struct flow_action *flow_action,
3973                                         struct netlink_ext_ack *extack)
3974 {
3975         struct mlx5e_rep_priv *rpriv = priv->ppriv;
3976         const struct flow_action_entry *act;
3977         int err;
3978         int i;
3979
3980         if (!flow_action_has_entries(flow_action)) {
3981                 NL_SET_ERR_MSG_MOD(extack, "matchall called with no action");
3982                 return -EINVAL;
3983         }
3984
3985         if (!flow_offload_has_one_action(flow_action)) {
3986                 NL_SET_ERR_MSG_MOD(extack, "matchall policing support only a single action");
3987                 return -EOPNOTSUPP;
3988         }
3989
3990         flow_action_for_each(i, act, flow_action) {
3991                 switch (act->id) {
3992                 case FLOW_ACTION_POLICE:
3993                         err = apply_police_params(priv, act->police.rate_bytes_ps, extack);
3994                         if (err)
3995                                 return err;
3996
3997                         rpriv->prev_vf_vport_stats = priv->stats.vf_vport;
3998                         break;
3999                 default:
4000                         NL_SET_ERR_MSG_MOD(extack, "mlx5 supports only police action for matchall");
4001                         return -EOPNOTSUPP;
4002                 }
4003         }
4004
4005         return 0;
4006 }
4007
4008 int mlx5e_tc_configure_matchall(struct mlx5e_priv *priv,
4009                                 struct tc_cls_matchall_offload *ma)
4010 {
4011         struct netlink_ext_ack *extack = ma->common.extack;
4012         int prio = TC_H_MAJ(ma->common.prio) >> 16;
4013
4014         if (prio != 1) {
4015                 NL_SET_ERR_MSG_MOD(extack, "only priority 1 is supported");
4016                 return -EINVAL;
4017         }
4018
4019         return scan_tc_matchall_fdb_actions(priv, &ma->rule->action, extack);
4020 }
4021
4022 int mlx5e_tc_delete_matchall(struct mlx5e_priv *priv,
4023                              struct tc_cls_matchall_offload *ma)
4024 {
4025         struct netlink_ext_ack *extack = ma->common.extack;
4026
4027         return apply_police_params(priv, 0, extack);
4028 }
4029
4030 void mlx5e_tc_stats_matchall(struct mlx5e_priv *priv,
4031                              struct tc_cls_matchall_offload *ma)
4032 {
4033         struct mlx5e_rep_priv *rpriv = priv->ppriv;
4034         struct rtnl_link_stats64 cur_stats;
4035         u64 dbytes;
4036         u64 dpkts;
4037
4038         cur_stats = priv->stats.vf_vport;
4039         dpkts = cur_stats.rx_packets - rpriv->prev_vf_vport_stats.rx_packets;
4040         dbytes = cur_stats.rx_bytes - rpriv->prev_vf_vport_stats.rx_bytes;
4041         rpriv->prev_vf_vport_stats = cur_stats;
4042         flow_stats_update(&ma->stats, dpkts, dbytes, jiffies);
4043 }
4044
4045 static void mlx5e_tc_hairpin_update_dead_peer(struct mlx5e_priv *priv,
4046                                               struct mlx5e_priv *peer_priv)
4047 {
4048         struct mlx5_core_dev *peer_mdev = peer_priv->mdev;
4049         struct mlx5e_hairpin_entry *hpe, *tmp;
4050         LIST_HEAD(init_wait_list);
4051         u16 peer_vhca_id;
4052         int bkt;
4053
4054         if (!same_hw_devs(priv, peer_priv))
4055                 return;
4056
4057         peer_vhca_id = MLX5_CAP_GEN(peer_mdev, vhca_id);
4058
4059         mutex_lock(&priv->fs.tc.hairpin_tbl_lock);
4060         hash_for_each(priv->fs.tc.hairpin_tbl, bkt, hpe, hairpin_hlist)
4061                 if (refcount_inc_not_zero(&hpe->refcnt))
4062                         list_add(&hpe->dead_peer_wait_list, &init_wait_list);
4063         mutex_unlock(&priv->fs.tc.hairpin_tbl_lock);
4064
4065         list_for_each_entry_safe(hpe, tmp, &init_wait_list, dead_peer_wait_list) {
4066                 wait_for_completion(&hpe->res_ready);
4067                 if (!IS_ERR_OR_NULL(hpe->hp) && hpe->peer_vhca_id == peer_vhca_id)
4068                         hpe->hp->pair->peer_gone = true;
4069
4070                 mlx5e_hairpin_put(priv, hpe);
4071         }
4072 }
4073
4074 static int mlx5e_tc_netdev_event(struct notifier_block *this,
4075                                  unsigned long event, void *ptr)
4076 {
4077         struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
4078         struct mlx5e_flow_steering *fs;
4079         struct mlx5e_priv *peer_priv;
4080         struct mlx5e_tc_table *tc;
4081         struct mlx5e_priv *priv;
4082
4083         if (ndev->netdev_ops != &mlx5e_netdev_ops ||
4084             event != NETDEV_UNREGISTER ||
4085             ndev->reg_state == NETREG_REGISTERED)
4086                 return NOTIFY_DONE;
4087
4088         tc = container_of(this, struct mlx5e_tc_table, netdevice_nb);
4089         fs = container_of(tc, struct mlx5e_flow_steering, tc);
4090         priv = container_of(fs, struct mlx5e_priv, fs);
4091         peer_priv = netdev_priv(ndev);
4092         if (priv == peer_priv ||
4093             !(priv->netdev->features & NETIF_F_HW_TC))
4094                 return NOTIFY_DONE;
4095
4096         mlx5e_tc_hairpin_update_dead_peer(priv, peer_priv);
4097
4098         return NOTIFY_DONE;
4099 }
4100
4101 int mlx5e_tc_nic_init(struct mlx5e_priv *priv)
4102 {
4103         struct mlx5e_tc_table *tc = &priv->fs.tc;
4104         int err;
4105
4106         mutex_init(&tc->t_lock);
4107         mutex_init(&tc->mod_hdr.lock);
4108         hash_init(tc->mod_hdr.hlist);
4109         mutex_init(&tc->hairpin_tbl_lock);
4110         hash_init(tc->hairpin_tbl);
4111
4112         err = rhashtable_init(&tc->ht, &tc_ht_params);
4113         if (err)
4114                 return err;
4115
4116         tc->netdevice_nb.notifier_call = mlx5e_tc_netdev_event;
4117         if (register_netdevice_notifier(&tc->netdevice_nb)) {
4118                 tc->netdevice_nb.notifier_call = NULL;
4119                 mlx5_core_warn(priv->mdev, "Failed to register netdev notifier\n");
4120         }
4121
4122         return err;
4123 }
4124
4125 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
4126 {
4127         struct mlx5e_tc_flow *flow = ptr;
4128         struct mlx5e_priv *priv = flow->priv;
4129
4130         mlx5e_tc_del_flow(priv, flow);
4131         kfree(flow);
4132 }
4133
4134 void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv)
4135 {
4136         struct mlx5e_tc_table *tc = &priv->fs.tc;
4137
4138         if (tc->netdevice_nb.notifier_call)
4139                 unregister_netdevice_notifier(&tc->netdevice_nb);
4140
4141         mutex_destroy(&tc->mod_hdr.lock);
4142         mutex_destroy(&tc->hairpin_tbl_lock);
4143
4144         rhashtable_destroy(&tc->ht);
4145
4146         if (!IS_ERR_OR_NULL(tc->t)) {
4147                 mlx5_destroy_flow_table(tc->t);
4148                 tc->t = NULL;
4149         }
4150         mutex_destroy(&tc->t_lock);
4151 }
4152
4153 int mlx5e_tc_esw_init(struct rhashtable *tc_ht)
4154 {
4155         return rhashtable_init(tc_ht, &tc_ht_params);
4156 }
4157
4158 void mlx5e_tc_esw_cleanup(struct rhashtable *tc_ht)
4159 {
4160         rhashtable_free_and_destroy(tc_ht, _mlx5e_tc_del_flow, NULL);
4161 }
4162
4163 int mlx5e_tc_num_filters(struct mlx5e_priv *priv, unsigned long flags)
4164 {
4165         struct rhashtable *tc_ht = get_tc_ht(priv, flags);
4166
4167         return atomic_read(&tc_ht->nelems);
4168 }
4169
4170 void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw)
4171 {
4172         struct mlx5e_tc_flow *flow, *tmp;
4173
4174         list_for_each_entry_safe(flow, tmp, &esw->offloads.peer_flows, peer)
4175                 __mlx5e_tc_del_fdb_peer_flow(flow);
4176 }
4177
4178 void mlx5e_tc_reoffload_flows_work(struct work_struct *work)
4179 {
4180         struct mlx5_rep_uplink_priv *rpriv =
4181                 container_of(work, struct mlx5_rep_uplink_priv,
4182                              reoffload_flows_work);
4183         struct mlx5e_tc_flow *flow, *tmp;
4184
4185         mutex_lock(&rpriv->unready_flows_lock);
4186         list_for_each_entry_safe(flow, tmp, &rpriv->unready_flows, unready) {
4187                 if (!mlx5e_tc_add_fdb_flow(flow->priv, flow, NULL))
4188                         unready_flow_del(flow);
4189         }
4190         mutex_unlock(&rpriv->unready_flows_lock);
4191 }