drivers/net/ethernet/mellanox/mlx5/core/en_tc.c

   1 /*
   2  * Copyright (c) 2016, Mellanox Technologies. All rights reserved.
   3  *
   4  * This software is available to you under a choice of one of two
   5  * licenses.  You may choose to be licensed under the terms of the GNU
   6  * General Public License (GPL) Version 2, available from the file
   7  * COPYING in the main directory of this source tree, or the
   8  * OpenIB.org BSD license below:
   9  *
  10  *     Redistribution and use in source and binary forms, with or
  11  *     without modification, are permitted provided that the following
  12  *     conditions are met:
  13  *
  14  *      - Redistributions of source code must retain the above
  15  *        copyright notice, this list of conditions and the following
  16  *        disclaimer.
  17  *
  18  *      - Redistributions in binary form must reproduce the above
  19  *        copyright notice, this list of conditions and the following
  20  *        disclaimer in the documentation and/or other materials
  21  *        provided with the distribution.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30  * SOFTWARE.
  31  */
  32
  33 #include <net/flow_dissector.h>
  34 #include <net/sch_generic.h>
  35 #include <net/pkt_cls.h>
  36 #include <net/tc_act/tc_gact.h>
  37 #include <net/tc_act/tc_skbedit.h>
  38 #include <linux/mlx5/fs.h>
  39 #include <linux/mlx5/device.h>
  40 #include <linux/rhashtable.h>
  41 #include <net/switchdev.h>
  42 #include <net/tc_act/tc_mirred.h>
  43 #include <net/tc_act/tc_vlan.h>
  44 #include <net/tc_act/tc_tunnel_key.h>
  45 #include <net/vxlan.h>
  46 #include "en.h"
  47 #include "en_tc.h"
  48 #include "eswitch.h"
  49 #include "vxlan.h"
  50
  51 struct mlx5e_tc_flow {
  52         struct rhash_head       node;
  53         u64                     cookie;
  54         struct mlx5_flow_handle *rule;
  55         struct list_head        encap; /* flows sharing the same encap */
  56         struct mlx5_esw_flow_attr *attr;
  57 };
  58
  59 enum {
  60         MLX5_HEADER_TYPE_VXLAN = 0x0,
  61         MLX5_HEADER_TYPE_NVGRE = 0x1,
  62 };
  63
  64 #define MLX5E_TC_TABLE_NUM_ENTRIES 1024
  65 #define MLX5E_TC_TABLE_NUM_GROUPS 4
  66
  67 static struct mlx5_flow_handle *
  68 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
  69                       struct mlx5_flow_spec *spec,
  70                       u32 action, u32 flow_tag)
  71 {
  72         struct mlx5_core_dev *dev = priv->mdev;
  73         struct mlx5_flow_destination dest = { 0 };
  74         struct mlx5_flow_act flow_act = {
  75                 .action = action,
  76                 .flow_tag = flow_tag,
  77                 .encap_id = 0,
  78         };
  79         struct mlx5_fc *counter = NULL;
  80         struct mlx5_flow_handle *rule;
  81         bool table_created = false;
  82
  83         if (action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
  84                 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
  85                 dest.ft = priv->fs.vlan.ft.t;
  86         } else if (action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
  87                 counter = mlx5_fc_create(dev, true);
  88                 if (IS_ERR(counter))
  89                         return ERR_CAST(counter);
  90
  91                 dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
  92                 dest.counter = counter;
  93         }
  94
  95         if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
  96                 priv->fs.tc.t =
  97                         mlx5_create_auto_grouped_flow_table(priv->fs.ns,
  98                                                             MLX5E_TC_PRIO,
  99                                                             MLX5E_TC_TABLE_NUM_ENTRIES,
 100                                                             MLX5E_TC_TABLE_NUM_GROUPS,
 101                                                             0, 0);
 102                 if (IS_ERR(priv->fs.tc.t)) {
 103                         netdev_err(priv->netdev,
 104                                    "Failed to create tc offload table\n");
 105                         rule = ERR_CAST(priv->fs.tc.t);
 106                         goto err_create_ft;
 107                 }
 108
 109                 table_created = true;
 110         }
 111
 112         spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
 113         rule = mlx5_add_flow_rules(priv->fs.tc.t, spec, &flow_act, &dest, 1);
 114
 115         if (IS_ERR(rule))
 116                 goto err_add_rule;
 117
 118         return rule;
 119
 120 err_add_rule:
 121         if (table_created) {
 122                 mlx5_destroy_flow_table(priv->fs.tc.t);
 123                 priv->fs.tc.t = NULL;
 124         }
 125 err_create_ft:
 126         mlx5_fc_destroy(dev, counter);
 127
 128         return rule;
 129 }
 130
 131 static struct mlx5_flow_handle *
 132 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
 133                       struct mlx5_flow_spec *spec,
 134                       struct mlx5_esw_flow_attr *attr)
 135 {
 136         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 137         int err;
 138
 139         err = mlx5_eswitch_add_vlan_action(esw, attr);
 140         if (err)
 141                 return ERR_PTR(err);
 142
 143         return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
 144 }
 145
 146 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
 147                                struct mlx5e_tc_flow *flow) {
 148         struct list_head *next = flow->encap.next;
 149
 150         list_del(&flow->encap);
 151         if (list_empty(next)) {
 152                 struct mlx5_encap_entry *e;
 153
 154                 e = list_entry(next, struct mlx5_encap_entry, flows);
 155                 if (e->n) {
 156                         mlx5_encap_dealloc(priv->mdev, e->encap_id);
 157                         neigh_release(e->n);
 158                 }
 159                 hlist_del_rcu(&e->encap_hlist);
 160                 kfree(e);
 161         }
 162 }
 163
 164 /* we get here also when setting rule to the FW failed, etc. It means that the
 165  * flow rule itself might not exist, but some offloading related to the actions
 166  * should be cleaned.
 167  */
 168 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
 169                               struct mlx5e_tc_flow *flow)
 170 {
 171         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 172         struct mlx5_fc *counter = NULL;
 173
 174         if (!IS_ERR(flow->rule)) {
 175                 counter = mlx5_flow_rule_counter(flow->rule);
 176                 mlx5_del_flow_rules(flow->rule);
 177                 mlx5_fc_destroy(priv->mdev, counter);
 178         }
 179
 180         if (esw && esw->mode == SRIOV_OFFLOADS) {
 181                 mlx5_eswitch_del_vlan_action(esw, flow->attr);
 182                 if (flow->attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
 183                         mlx5e_detach_encap(priv, flow);
 184         }
 185
 186         if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
 187                 mlx5_destroy_flow_table(priv->fs.tc.t);
 188                 priv->fs.tc.t = NULL;
 189         }
 190 }
 191
 192 static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
 193                              struct tc_cls_flower_offload *f)
 194 {
 195         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 196                                        outer_headers);
 197         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 198                                        outer_headers);
 199         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 200                                     misc_parameters);
 201         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 202                                     misc_parameters);
 203
 204         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
 205         MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
 206
 207         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
 208                 struct flow_dissector_key_keyid *key =
 209                         skb_flow_dissector_target(f->dissector,
 210                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
 211                                                   f->key);
 212                 struct flow_dissector_key_keyid *mask =
 213                         skb_flow_dissector_target(f->dissector,
 214                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
 215                                                   f->mask);
 216                 MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
 217                          be32_to_cpu(mask->keyid));
 218                 MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
 219                          be32_to_cpu(key->keyid));
 220         }
 221 }
 222
 223 static int parse_tunnel_attr(struct mlx5e_priv *priv,
 224                              struct mlx5_flow_spec *spec,
 225                              struct tc_cls_flower_offload *f)
 226 {
 227         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 228                                        outer_headers);
 229         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 230                                        outer_headers);
 231
 232         struct flow_dissector_key_control *enc_control =
 233                 skb_flow_dissector_target(f->dissector,
 234                                           FLOW_DISSECTOR_KEY_ENC_CONTROL,
 235                                           f->key);
 236
 237         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
 238                 struct flow_dissector_key_ports *key =
 239                         skb_flow_dissector_target(f->dissector,
 240                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
 241                                                   f->key);
 242                 struct flow_dissector_key_ports *mask =
 243                         skb_flow_dissector_target(f->dissector,
 244                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
 245                                                   f->mask);
 246
 247                 /* Full udp dst port must be given */
 248                 if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
 249                         goto vxlan_match_offload_err;
 250
 251                 if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->dst)) &&
 252                     MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
 253                         parse_vxlan_attr(spec, f);
 254                 else {
 255                         netdev_warn(priv->netdev,
 256                                     "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
 257                         return -EOPNOTSUPP;
 258                 }
 259
 260                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 261                          udp_dport, ntohs(mask->dst));
 262                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 263                          udp_dport, ntohs(key->dst));
 264
 265                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 266                          udp_sport, ntohs(mask->src));
 267                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 268                          udp_sport, ntohs(key->src));
 269         } else { /* udp dst port must be given */
 270 vxlan_match_offload_err:
 271                 netdev_warn(priv->netdev,
 272                             "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
 273                 return -EOPNOTSUPP;
 274         }
 275
 276         if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
 277                 struct flow_dissector_key_ipv4_addrs *key =
 278                         skb_flow_dissector_target(f->dissector,
 279                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
 280                                                   f->key);
 281                 struct flow_dissector_key_ipv4_addrs *mask =
 282                         skb_flow_dissector_target(f->dissector,
 283                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
 284                                                   f->mask);
 285                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 286                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
 287                          ntohl(mask->src));
 288                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 289                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
 290                          ntohl(key->src));
 291
 292                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 293                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
 294                          ntohl(mask->dst));
 295                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 296                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
 297                          ntohl(key->dst));
 298
 299                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
 300                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
 301         } else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
 302                 struct flow_dissector_key_ipv6_addrs *key =
 303                         skb_flow_dissector_target(f->dissector,
 304                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
 305                                                   f->key);
 306                 struct flow_dissector_key_ipv6_addrs *mask =
 307                         skb_flow_dissector_target(f->dissector,
 308                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
 309                                                   f->mask);
 310
 311                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 312                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 313                        &mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 314                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 315                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 316                        &key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 317
 318                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 319                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 320                        &mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 321                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 322                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 323                        &key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 324
 325                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
 326                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6);
 327         }
 328
 329         /* Enforce DMAC when offloading incoming tunneled flows.
 330          * Flow counters require a match on the DMAC.
 331          */
 332         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
 333         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
 334         ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 335                                      dmac_47_16), priv->netdev->dev_addr);
 336
 337         /* let software handle IP fragments */
 338         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
 339         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
 340
 341         return 0;
 342 }
 343
 344 static int __parse_cls_flower(struct mlx5e_priv *priv,
 345                               struct mlx5_flow_spec *spec,
 346                               struct tc_cls_flower_offload *f,
 347                               u8 *min_inline)
 348 {
 349         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 350                                        outer_headers);
 351         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 352                                        outer_headers);
 353         u16 addr_type = 0;
 354         u8 ip_proto = 0;
 355
 356         *min_inline = MLX5_INLINE_MODE_L2;
 357
 358         if (f->dissector->used_keys &
 359             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
 360               BIT(FLOW_DISSECTOR_KEY_BASIC) |
 361               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
 362               BIT(FLOW_DISSECTOR_KEY_VLAN) |
 363               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
 364               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
 365               BIT(FLOW_DISSECTOR_KEY_PORTS) |
 366               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
 367               BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
 368               BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
 369               BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
 370               BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL))) {
 371                 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
 372                             f->dissector->used_keys);
 373                 return -EOPNOTSUPP;
 374         }
 375
 376         if ((dissector_uses_key(f->dissector,
 377                                 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
 378              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
 379              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
 380             dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
 381                 struct flow_dissector_key_control *key =
 382                         skb_flow_dissector_target(f->dissector,
 383                                                   FLOW_DISSECTOR_KEY_ENC_CONTROL,
 384                                                   f->key);
 385                 switch (key->addr_type) {
 386                 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
 387                 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
 388                         if (parse_tunnel_attr(priv, spec, f))
 389                                 return -EOPNOTSUPP;
 390                         break;
 391                 default:
 392                         return -EOPNOTSUPP;
 393                 }
 394
 395                 /* In decap flow, header pointers should point to the inner
 396                  * headers, outer header were already set by parse_tunnel_attr
 397                  */
 398                 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 399                                          inner_headers);
 400                 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 401                                          inner_headers);
 402         }
 403
 404         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
 405                 struct flow_dissector_key_control *key =
 406                         skb_flow_dissector_target(f->dissector,
 407                                                   FLOW_DISSECTOR_KEY_CONTROL,
 408                                                   f->key);
 409
 410                 struct flow_dissector_key_control *mask =
 411                         skb_flow_dissector_target(f->dissector,
 412                                                   FLOW_DISSECTOR_KEY_CONTROL,
 413                                                   f->mask);
 414                 addr_type = key->addr_type;
 415
 416                 if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
 417                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
 418                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
 419                                  key->flags & FLOW_DIS_IS_FRAGMENT);
 420
 421                         /* the HW doesn't need L3 inline to match on frag=no */
 422                         if (key->flags & FLOW_DIS_IS_FRAGMENT)
 423                                 *min_inline = MLX5_INLINE_MODE_IP;
 424                 }
 425         }
 426
 427         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
 428                 struct flow_dissector_key_basic *key =
 429                         skb_flow_dissector_target(f->dissector,
 430                                                   FLOW_DISSECTOR_KEY_BASIC,
 431                                                   f->key);
 432                 struct flow_dissector_key_basic *mask =
 433                         skb_flow_dissector_target(f->dissector,
 434                                                   FLOW_DISSECTOR_KEY_BASIC,
 435                                                   f->mask);
 436                 ip_proto = key->ip_proto;
 437
 438                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
 439                          ntohs(mask->n_proto));
 440                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
 441                          ntohs(key->n_proto));
 442
 443                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
 444                          mask->ip_proto);
 445                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
 446                          key->ip_proto);
 447
 448                 if (mask->ip_proto)
 449                         *min_inline = MLX5_INLINE_MODE_IP;
 450         }
 451
 452         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
 453                 struct flow_dissector_key_eth_addrs *key =
 454                         skb_flow_dissector_target(f->dissector,
 455                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
 456                                                   f->key);
 457                 struct flow_dissector_key_eth_addrs *mask =
 458                         skb_flow_dissector_target(f->dissector,
 459                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
 460                                                   f->mask);
 461
 462                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 463                                              dmac_47_16),
 464                                 mask->dst);
 465                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 466                                              dmac_47_16),
 467                                 key->dst);
 468
 469                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 470                                              smac_47_16),
 471                                 mask->src);
 472                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 473                                              smac_47_16),
 474                                 key->src);
 475         }
 476
 477         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
 478                 struct flow_dissector_key_vlan *key =
 479                         skb_flow_dissector_target(f->dissector,
 480                                                   FLOW_DISSECTOR_KEY_VLAN,
 481                                                   f->key);
 482                 struct flow_dissector_key_vlan *mask =
 483                         skb_flow_dissector_target(f->dissector,
 484                                                   FLOW_DISSECTOR_KEY_VLAN,
 485                                                   f->mask);
 486                 if (mask->vlan_id || mask->vlan_priority) {
 487                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
 488                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1);
 489
 490                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
 491                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
 492
 493                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
 494                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
 495                 }
 496         }
 497
 498         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
 499                 struct flow_dissector_key_ipv4_addrs *key =
 500                         skb_flow_dissector_target(f->dissector,
 501                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
 502                                                   f->key);
 503                 struct flow_dissector_key_ipv4_addrs *mask =
 504                         skb_flow_dissector_target(f->dissector,
 505                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
 506                                                   f->mask);
 507
 508                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 509                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
 510                        &mask->src, sizeof(mask->src));
 511                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 512                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
 513                        &key->src, sizeof(key->src));
 514                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 515                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
 516                        &mask->dst, sizeof(mask->dst));
 517                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 518                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
 519                        &key->dst, sizeof(key->dst));
 520
 521                 if (mask->src || mask->dst)
 522                         *min_inline = MLX5_INLINE_MODE_IP;
 523         }
 524
 525         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
 526                 struct flow_dissector_key_ipv6_addrs *key =
 527                         skb_flow_dissector_target(f->dissector,
 528                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
 529                                                   f->key);
 530                 struct flow_dissector_key_ipv6_addrs *mask =
 531                         skb_flow_dissector_target(f->dissector,
 532                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
 533                                                   f->mask);
 534
 535                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 536                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 537                        &mask->src, sizeof(mask->src));
 538                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 539                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 540                        &key->src, sizeof(key->src));
 541
 542                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 543                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 544                        &mask->dst, sizeof(mask->dst));
 545                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 546                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 547                        &key->dst, sizeof(key->dst));
 548
 549                 if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
 550                     ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
 551                         *min_inline = MLX5_INLINE_MODE_IP;
 552         }
 553
 554         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
 555                 struct flow_dissector_key_ports *key =
 556                         skb_flow_dissector_target(f->dissector,
 557                                                   FLOW_DISSECTOR_KEY_PORTS,
 558                                                   f->key);
 559                 struct flow_dissector_key_ports *mask =
 560                         skb_flow_dissector_target(f->dissector,
 561                                                   FLOW_DISSECTOR_KEY_PORTS,
 562                                                   f->mask);
 563                 switch (ip_proto) {
 564                 case IPPROTO_TCP:
 565                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 566                                  tcp_sport, ntohs(mask->src));
 567                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 568                                  tcp_sport, ntohs(key->src));
 569
 570                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 571                                  tcp_dport, ntohs(mask->dst));
 572                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 573                                  tcp_dport, ntohs(key->dst));
 574                         break;
 575
 576                 case IPPROTO_UDP:
 577                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 578                                  udp_sport, ntohs(mask->src));
 579                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 580                                  udp_sport, ntohs(key->src));
 581
 582                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 583                                  udp_dport, ntohs(mask->dst));
 584                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 585                                  udp_dport, ntohs(key->dst));
 586                         break;
 587                 default:
 588                         netdev_err(priv->netdev,
 589                                    "Only UDP and TCP transport are supported\n");
 590                         return -EINVAL;
 591                 }
 592
 593                 if (mask->src || mask->dst)
 594                         *min_inline = MLX5_INLINE_MODE_TCP_UDP;
 595         }
 596
 597         return 0;
 598 }
 599
 600 static int parse_cls_flower(struct mlx5e_priv *priv,
 601                             struct mlx5_flow_spec *spec,
 602                             struct tc_cls_flower_offload *f)
 603 {
 604         struct mlx5_core_dev *dev = priv->mdev;
 605         struct mlx5_eswitch *esw = dev->priv.eswitch;
 606         struct mlx5_eswitch_rep *rep = priv->ppriv;
 607         u8 min_inline;
 608         int err;
 609
 610         err = __parse_cls_flower(priv, spec, f, &min_inline);
 611
 612         if (!err && esw->mode == SRIOV_OFFLOADS &&
 613             rep->vport != FDB_UPLINK_VPORT) {
 614                 if (min_inline > esw->offloads.inline_mode) {
 615                         netdev_warn(priv->netdev,
 616                                     "Flow is not offloaded due to min inline setting, required %d actual %d\n",
 617                                     min_inline, esw->offloads.inline_mode);
 618                         return -EOPNOTSUPP;
 619                 }
 620         }
 621
 622         return err;
 623 }
 624
 625 static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
 626                                 u32 *action, u32 *flow_tag)
 627 {
 628         const struct tc_action *a;
 629         LIST_HEAD(actions);
 630
 631         if (tc_no_actions(exts))
 632                 return -EINVAL;
 633
 634         *flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
 635         *action = 0;
 636
 637         tcf_exts_to_list(exts, &actions);
 638         list_for_each_entry(a, &actions, list) {
 639                 /* Only support a single action per rule */
 640                 if (*action)
 641                         return -EINVAL;
 642
 643                 if (is_tcf_gact_shot(a)) {
 644                         *action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
 645                         if (MLX5_CAP_FLOWTABLE(priv->mdev,
 646                                                flow_table_properties_nic_receive.flow_counter))
 647                                 *action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
 648                         continue;
 649                 }
 650
 651                 if (is_tcf_skbedit_mark(a)) {
 652                         u32 mark = tcf_skbedit_mark(a);
 653
 654                         if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
 655                                 netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
 656                                             mark);
 657                                 return -EINVAL;
 658                         }
 659
 660                         *flow_tag = mark;
 661                         *action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
 662                         continue;
 663                 }
 664
 665                 return -EINVAL;
 666         }
 667
 668         return 0;
 669 }
 670
 671 static inline int cmp_encap_info(struct mlx5_encap_info *a,
 672                                  struct mlx5_encap_info *b)
 673 {
 674         return memcmp(a, b, sizeof(*a));
 675 }
 676
 677 static inline int hash_encap_info(struct mlx5_encap_info *info)
 678 {
 679         return jhash(info, sizeof(*info), 0);
 680 }
 681
 682 static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
 683                                    struct net_device *mirred_dev,
 684                                    struct net_device **out_dev,
 685                                    struct flowi4 *fl4,
 686                                    struct neighbour **out_n,
 687                                    __be32 *saddr,
 688                                    int *out_ttl)
 689 {
 690         struct rtable *rt;
 691         struct neighbour *n = NULL;
 692         int ttl;
 693
 694 #if IS_ENABLED(CONFIG_INET)
 695         int ret;
 696
 697         rt = ip_route_output_key(dev_net(mirred_dev), fl4);
 698         ret = PTR_ERR_OR_ZERO(rt);
 699         if (ret)
 700                 return ret;
 701 #else
 702         return -EOPNOTSUPP;
 703 #endif
 704
 705         if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev)) {
 706                 pr_warn("%s: can't offload, devices not on same HW e-switch\n", __func__);
 707                 ip_rt_put(rt);
 708                 return -EOPNOTSUPP;
 709         }
 710
 711         ttl = ip4_dst_hoplimit(&rt->dst);
 712         n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
 713         ip_rt_put(rt);
 714         if (!n)
 715                 return -ENOMEM;
 716
 717         *out_n = n;
 718         *saddr = fl4->saddr;
 719         *out_ttl = ttl;
 720         *out_dev = rt->dst.dev;
 721
 722         return 0;
 723 }
 724
 725 static int gen_vxlan_header_ipv4(struct net_device *out_dev,
 726                                  char buf[],
 727                                  unsigned char h_dest[ETH_ALEN],
 728                                  int ttl,
 729                                  __be32 daddr,
 730                                  __be32 saddr,
 731                                  __be16 udp_dst_port,
 732                                  __be32 vx_vni)
 733 {
 734         int encap_size = VXLAN_HLEN + sizeof(struct iphdr) + ETH_HLEN;
 735         struct ethhdr *eth = (struct ethhdr *)buf;
 736         struct iphdr  *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
 737         struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
 738         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
 739
 740         memset(buf, 0, encap_size);
 741
 742         ether_addr_copy(eth->h_dest, h_dest);
 743         ether_addr_copy(eth->h_source, out_dev->dev_addr);
 744         eth->h_proto = htons(ETH_P_IP);
 745
 746         ip->daddr = daddr;
 747         ip->saddr = saddr;
 748
 749         ip->ttl = ttl;
 750         ip->protocol = IPPROTO_UDP;
 751         ip->version = 0x4;
 752         ip->ihl = 0x5;
 753
 754         udp->dest = udp_dst_port;
 755         vxh->vx_flags = VXLAN_HF_VNI;
 756         vxh->vx_vni = vxlan_vni_field(vx_vni);
 757
 758         return encap_size;
 759 }
 760
 761 static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
 762                                           struct net_device *mirred_dev,
 763                                           struct mlx5_encap_entry *e,
 764                                           struct net_device **out_dev)
 765 {
 766         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
 767         struct neighbour *n = NULL;
 768         struct flowi4 fl4 = {};
 769         char *encap_header;
 770         int encap_size;
 771         __be32 saddr;
 772         int ttl;
 773         int err;
 774
 775         encap_header = kzalloc(max_encap_size, GFP_KERNEL);
 776         if (!encap_header)
 777                 return -ENOMEM;
 778
 779         switch (e->tunnel_type) {
 780         case MLX5_HEADER_TYPE_VXLAN:
 781                 fl4.flowi4_proto = IPPROTO_UDP;
 782                 fl4.fl4_dport = e->tun_info.tp_dst;
 783                 break;
 784         default:
 785                 err = -EOPNOTSUPP;
 786                 goto out;
 787         }
 788         fl4.daddr = e->tun_info.daddr;
 789
 790         err = mlx5e_route_lookup_ipv4(priv, mirred_dev, out_dev,
 791                                       &fl4, &n, &saddr, &ttl);
 792         if (err)
 793                 goto out;
 794
 795         e->n = n;
 796         e->out_dev = *out_dev;
 797
 798         if (!(n->nud_state & NUD_VALID)) {
 799                 pr_warn("%s: can't offload, neighbour to %pI4 invalid\n", __func__, &fl4.daddr);
 800                 err = -EOPNOTSUPP;
 801                 goto out;
 802         }
 803
 804         neigh_ha_snapshot(e->h_dest, n, *out_dev);
 805
 806         switch (e->tunnel_type) {
 807         case MLX5_HEADER_TYPE_VXLAN:
 808                 encap_size = gen_vxlan_header_ipv4(*out_dev, encap_header,
 809                                                    e->h_dest, ttl,
 810                                                    e->tun_info.daddr,
 811                                                    saddr, e->tun_info.tp_dst,
 812                                                    e->tun_info.tun_id);
 813                 break;
 814         default:
 815                 err = -EOPNOTSUPP;
 816                 goto out;
 817         }
 818
 819         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
 820                                encap_size, encap_header, &e->encap_id);
 821 out:
 822         if (err && n)
 823                 neigh_release(n);
 824         kfree(encap_header);
 825         return err;
 826 }
 827
 828 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
 829                               struct ip_tunnel_info *tun_info,
 830                               struct net_device *mirred_dev,
 831                               struct mlx5_esw_flow_attr *attr)
 832 {
 833         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 834         unsigned short family = ip_tunnel_info_af(tun_info);
 835         struct ip_tunnel_key *key = &tun_info->key;
 836         struct mlx5_encap_info info;
 837         struct mlx5_encap_entry *e;
 838         struct net_device *out_dev;
 839         uintptr_t hash_key;
 840         bool found = false;
 841         int tunnel_type;
 842         int err;
 843
 844         /* udp dst port must be set */
 845         if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
 846                 goto vxlan_encap_offload_err;
 847
 848         /* setting udp src port isn't supported */
 849         if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
 850 vxlan_encap_offload_err:
 851                 netdev_warn(priv->netdev,
 852                             "must set udp dst port and not set udp src port\n");
 853                 return -EOPNOTSUPP;
 854         }
 855
 856         if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->tp_dst)) &&
 857             MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
 858                 info.tp_dst = key->tp_dst;
 859                 info.tun_id = tunnel_id_to_key32(key->tun_id);
 860                 tunnel_type = MLX5_HEADER_TYPE_VXLAN;
 861         } else {
 862                 netdev_warn(priv->netdev,
 863                             "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
 864                 return -EOPNOTSUPP;
 865         }
 866
 867         switch (family) {
 868         case AF_INET:
 869                 info.daddr = key->u.ipv4.dst;
 870                 break;
 871         case AF_INET6:
 872                 netdev_warn(priv->netdev,
 873                             "IPv6 tunnel encap offload isn't supported\n");
 874         default:
 875                 return -EOPNOTSUPP;
 876         }
 877
 878         hash_key = hash_encap_info(&info);
 879
 880         hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
 881                                    encap_hlist, hash_key) {
 882                 if (!cmp_encap_info(&e->tun_info, &info)) {
 883                         found = true;
 884                         break;
 885                 }
 886         }
 887
 888         if (found) {
 889                 attr->encap = e;
 890                 return 0;
 891         }
 892
 893         e = kzalloc(sizeof(*e), GFP_KERNEL);
 894         if (!e)
 895                 return -ENOMEM;
 896
 897         e->tun_info = info;
 898         e->tunnel_type = tunnel_type;
 899         INIT_LIST_HEAD(&e->flows);
 900
 901         err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e, &out_dev);
 902         if (err)
 903                 goto out_err;
 904
 905         attr->encap = e;
 906         hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
 907
 908         return err;
 909
 910 out_err:
 911         kfree(e);
 912         return err;
 913 }
 914
 915 static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
 916                                 struct mlx5e_tc_flow *flow)
 917 {
 918         struct mlx5_esw_flow_attr *attr = flow->attr;
 919         struct ip_tunnel_info *info = NULL;
 920         const struct tc_action *a;
 921         LIST_HEAD(actions);
 922         bool encap = false;
 923         int err;
 924
 925         if (tc_no_actions(exts))
 926                 return -EINVAL;
 927
 928         memset(attr, 0, sizeof(*attr));
 929         attr->in_rep = priv->ppriv;
 930
 931         tcf_exts_to_list(exts, &actions);
 932         list_for_each_entry(a, &actions, list) {
 933                 if (is_tcf_gact_shot(a)) {
 934                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
 935                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
 936                         continue;
 937                 }
 938
 939                 if (is_tcf_mirred_egress_redirect(a)) {
 940                         int ifindex = tcf_mirred_ifindex(a);
 941                         struct net_device *out_dev;
 942                         struct mlx5e_priv *out_priv;
 943
 944                         out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
 945
 946                         if (switchdev_port_same_parent_id(priv->netdev,
 947                                                           out_dev)) {
 948                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
 949                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
 950                                 out_priv = netdev_priv(out_dev);
 951                                 attr->out_rep = out_priv->ppriv;
 952                         } else if (encap) {
 953                                 err = mlx5e_attach_encap(priv, info,
 954                                                          out_dev, attr);
 955                                 if (err)
 956                                         return err;
 957                                 list_add(&flow->encap, &attr->encap->flows);
 958                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
 959                                         MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
 960                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
 961                                 out_priv = netdev_priv(attr->encap->out_dev);
 962                                 attr->out_rep = out_priv->ppriv;
 963                         } else {
 964                                 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
 965                                        priv->netdev->name, out_dev->name);
 966                                 return -EINVAL;
 967                         }
 968                         continue;
 969                 }
 970
 971                 if (is_tcf_tunnel_set(a)) {
 972                         info = tcf_tunnel_info(a);
 973                         if (info)
 974                                 encap = true;
 975                         else
 976                                 return -EOPNOTSUPP;
 977                         continue;
 978                 }
 979
 980                 if (is_tcf_vlan(a)) {
 981                         if (tcf_vlan_action(a) == VLAN_F_POP) {
 982                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
 983                         } else if (tcf_vlan_action(a) == VLAN_F_PUSH) {
 984                                 if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
 985                                         return -EOPNOTSUPP;
 986
 987                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
 988                                 attr->vlan = tcf_vlan_push_vid(a);
 989                         }
 990                         continue;
 991                 }
 992
 993                 if (is_tcf_tunnel_release(a)) {
 994                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
 995                         continue;
 996                 }
 997
 998                 return -EINVAL;
 999         }
1000         return 0;
1001 }
1002
1003 int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
1004                            struct tc_cls_flower_offload *f)
1005 {
1006         struct mlx5e_tc_table *tc = &priv->fs.tc;
1007         int err = 0;
1008         bool fdb_flow = false;
1009         u32 flow_tag, action;
1010         struct mlx5e_tc_flow *flow;
1011         struct mlx5_flow_spec *spec;
1012         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1013
1014         if (esw && esw->mode == SRIOV_OFFLOADS)
1015                 fdb_flow = true;
1016
1017         if (fdb_flow)
1018                 flow = kzalloc(sizeof(*flow) +
1019                                sizeof(struct mlx5_esw_flow_attr),
1020                                GFP_KERNEL);
1021         else
1022                 flow = kzalloc(sizeof(*flow), GFP_KERNEL);
1023
1024         spec = mlx5_vzalloc(sizeof(*spec));
1025         if (!spec || !flow) {
1026                 err = -ENOMEM;
1027                 goto err_free;
1028         }
1029
1030         flow->cookie = f->cookie;
1031
1032         err = parse_cls_flower(priv, spec, f);
1033         if (err < 0)
1034                 goto err_free;
1035
1036         if (fdb_flow) {
1037                 flow->attr  = (struct mlx5_esw_flow_attr *)(flow + 1);
1038                 err = parse_tc_fdb_actions(priv, f->exts, flow);
1039                 if (err < 0)
1040                         goto err_free;
1041                 flow->rule = mlx5e_tc_add_fdb_flow(priv, spec, flow->attr);
1042         } else {
1043                 err = parse_tc_nic_actions(priv, f->exts, &action, &flow_tag);
1044                 if (err < 0)
1045                         goto err_free;
1046                 flow->rule = mlx5e_tc_add_nic_flow(priv, spec, action, flow_tag);
1047         }
1048
1049         if (IS_ERR(flow->rule)) {
1050                 err = PTR_ERR(flow->rule);
1051                 goto err_del_rule;
1052         }
1053
1054         err = rhashtable_insert_fast(&tc->ht, &flow->node,
1055                                      tc->ht_params);
1056         if (err)
1057                 goto err_del_rule;
1058
1059         goto out;
1060
1061 err_del_rule:
1062         mlx5e_tc_del_flow(priv, flow);
1063
1064 err_free:
1065         kfree(flow);
1066 out:
1067         kvfree(spec);
1068         return err;
1069 }
1070
1071 int mlx5e_delete_flower(struct mlx5e_priv *priv,
1072                         struct tc_cls_flower_offload *f)
1073 {
1074         struct mlx5e_tc_flow *flow;
1075         struct mlx5e_tc_table *tc = &priv->fs.tc;
1076
1077         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1078                                       tc->ht_params);
1079         if (!flow)
1080                 return -EINVAL;
1081
1082         rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
1083
1084         mlx5e_tc_del_flow(priv, flow);
1085
1086
1087         kfree(flow);
1088
1089         return 0;
1090 }
1091
1092 int mlx5e_stats_flower(struct mlx5e_priv *priv,
1093                        struct tc_cls_flower_offload *f)
1094 {
1095         struct mlx5e_tc_table *tc = &priv->fs.tc;
1096         struct mlx5e_tc_flow *flow;
1097         struct tc_action *a;
1098         struct mlx5_fc *counter;
1099         LIST_HEAD(actions);
1100         u64 bytes;
1101         u64 packets;
1102         u64 lastuse;
1103
1104         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1105                                       tc->ht_params);
1106         if (!flow)
1107                 return -EINVAL;
1108
1109         counter = mlx5_flow_rule_counter(flow->rule);
1110         if (!counter)
1111                 return 0;
1112
1113         mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
1114
1115         tcf_exts_to_list(f->exts, &actions);
1116         list_for_each_entry(a, &actions, list)
1117                 tcf_action_stats_update(a, bytes, packets, lastuse);
1118
1119         return 0;
1120 }
1121
1122 static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
1123         .head_offset = offsetof(struct mlx5e_tc_flow, node),
1124         .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
1125         .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
1126         .automatic_shrinking = true,
1127 };
1128
1129 int mlx5e_tc_init(struct mlx5e_priv *priv)
1130 {
1131         struct mlx5e_tc_table *tc = &priv->fs.tc;
1132
1133         tc->ht_params = mlx5e_tc_flow_ht_params;
1134         return rhashtable_init(&tc->ht, &tc->ht_params);
1135 }
1136
1137 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
1138 {
1139         struct mlx5e_tc_flow *flow = ptr;
1140         struct mlx5e_priv *priv = arg;
1141
1142         mlx5e_tc_del_flow(priv, flow);
1143         kfree(flow);
1144 }
1145
1146 void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
1147 {
1148         struct mlx5e_tc_table *tc = &priv->fs.tc;
1149
1150         rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
1151
1152         if (!IS_ERR_OR_NULL(tc->t)) {
1153                 mlx5_destroy_flow_table(tc->t);
1154                 tc->t = NULL;
1155         }
1156 }