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 enum {
  52         MLX5E_TC_FLOW_ESWITCH   = BIT(0),
  53 };
  54
  55 struct mlx5e_tc_flow {
  56         struct rhash_head       node;
  57         u64                     cookie;
  58         u8                      flags;
  59         struct mlx5_flow_handle *rule;
  60         struct list_head        encap; /* flows sharing the same encap */
  61         struct mlx5_esw_flow_attr *attr;
  62 };
  63
  64 enum {
  65         MLX5_HEADER_TYPE_VXLAN = 0x0,
  66         MLX5_HEADER_TYPE_NVGRE = 0x1,
  67 };
  68
  69 #define MLX5E_TC_TABLE_NUM_ENTRIES 1024
  70 #define MLX5E_TC_TABLE_NUM_GROUPS 4
  71
  72 static struct mlx5_flow_handle *
  73 mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv,
  74                       struct mlx5_flow_spec *spec,
  75                       u32 action, u32 flow_tag)
  76 {
  77         struct mlx5_core_dev *dev = priv->mdev;
  78         struct mlx5_flow_destination dest = { 0 };
  79         struct mlx5_flow_act flow_act = {
  80                 .action = action,
  81                 .flow_tag = flow_tag,
  82                 .encap_id = 0,
  83         };
  84         struct mlx5_fc *counter = NULL;
  85         struct mlx5_flow_handle *rule;
  86         bool table_created = false;
  87
  88         if (action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) {
  89                 dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE;
  90                 dest.ft = priv->fs.vlan.ft.t;
  91         } else if (action & MLX5_FLOW_CONTEXT_ACTION_COUNT) {
  92                 counter = mlx5_fc_create(dev, true);
  93                 if (IS_ERR(counter))
  94                         return ERR_CAST(counter);
  95
  96                 dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER;
  97                 dest.counter = counter;
  98         }
  99
 100         if (IS_ERR_OR_NULL(priv->fs.tc.t)) {
 101                 priv->fs.tc.t =
 102                         mlx5_create_auto_grouped_flow_table(priv->fs.ns,
 103                                                             MLX5E_TC_PRIO,
 104                                                             MLX5E_TC_TABLE_NUM_ENTRIES,
 105                                                             MLX5E_TC_TABLE_NUM_GROUPS,
 106                                                             0, 0);
 107                 if (IS_ERR(priv->fs.tc.t)) {
 108                         netdev_err(priv->netdev,
 109                                    "Failed to create tc offload table\n");
 110                         rule = ERR_CAST(priv->fs.tc.t);
 111                         goto err_create_ft;
 112                 }
 113
 114                 table_created = true;
 115         }
 116
 117         spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS;
 118         rule = mlx5_add_flow_rules(priv->fs.tc.t, spec, &flow_act, &dest, 1);
 119
 120         if (IS_ERR(rule))
 121                 goto err_add_rule;
 122
 123         return rule;
 124
 125 err_add_rule:
 126         if (table_created) {
 127                 mlx5_destroy_flow_table(priv->fs.tc.t);
 128                 priv->fs.tc.t = NULL;
 129         }
 130 err_create_ft:
 131         mlx5_fc_destroy(dev, counter);
 132
 133         return rule;
 134 }
 135
 136 static struct mlx5_flow_handle *
 137 mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
 138                       struct mlx5_flow_spec *spec,
 139                       struct mlx5_esw_flow_attr *attr)
 140 {
 141         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 142         int err;
 143
 144         err = mlx5_eswitch_add_vlan_action(esw, attr);
 145         if (err)
 146                 return ERR_PTR(err);
 147
 148         return mlx5_eswitch_add_offloaded_rule(esw, spec, attr);
 149 }
 150
 151 static void mlx5e_detach_encap(struct mlx5e_priv *priv,
 152                                struct mlx5e_tc_flow *flow) {
 153         struct list_head *next = flow->encap.next;
 154
 155         list_del(&flow->encap);
 156         if (list_empty(next)) {
 157                 struct mlx5_encap_entry *e;
 158
 159                 e = list_entry(next, struct mlx5_encap_entry, flows);
 160                 if (e->n) {
 161                         mlx5_encap_dealloc(priv->mdev, e->encap_id);
 162                         neigh_release(e->n);
 163                 }
 164                 hlist_del_rcu(&e->encap_hlist);
 165                 kfree(e);
 166         }
 167 }
 168
 169 /* we get here also when setting rule to the FW failed, etc. It means that the
 170  * flow rule itself might not exist, but some offloading related to the actions
 171  * should be cleaned.
 172  */
 173 static void mlx5e_tc_del_flow(struct mlx5e_priv *priv,
 174                               struct mlx5e_tc_flow *flow)
 175 {
 176         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 177         struct mlx5_fc *counter = NULL;
 178
 179         if (!IS_ERR(flow->rule)) {
 180                 counter = mlx5_flow_rule_counter(flow->rule);
 181                 mlx5_del_flow_rules(flow->rule);
 182                 mlx5_fc_destroy(priv->mdev, counter);
 183         }
 184
 185         if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
 186                 mlx5_eswitch_del_vlan_action(esw, flow->attr);
 187                 if (flow->attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
 188                         mlx5e_detach_encap(priv, flow);
 189         }
 190
 191         if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) {
 192                 mlx5_destroy_flow_table(priv->fs.tc.t);
 193                 priv->fs.tc.t = NULL;
 194         }
 195 }
 196
 197 static void parse_vxlan_attr(struct mlx5_flow_spec *spec,
 198                              struct tc_cls_flower_offload *f)
 199 {
 200         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 201                                        outer_headers);
 202         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 203                                        outer_headers);
 204         void *misc_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 205                                     misc_parameters);
 206         void *misc_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 207                                     misc_parameters);
 208
 209         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ip_protocol);
 210         MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, IPPROTO_UDP);
 211
 212         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID)) {
 213                 struct flow_dissector_key_keyid *key =
 214                         skb_flow_dissector_target(f->dissector,
 215                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
 216                                                   f->key);
 217                 struct flow_dissector_key_keyid *mask =
 218                         skb_flow_dissector_target(f->dissector,
 219                                                   FLOW_DISSECTOR_KEY_ENC_KEYID,
 220                                                   f->mask);
 221                 MLX5_SET(fte_match_set_misc, misc_c, vxlan_vni,
 222                          be32_to_cpu(mask->keyid));
 223                 MLX5_SET(fte_match_set_misc, misc_v, vxlan_vni,
 224                          be32_to_cpu(key->keyid));
 225         }
 226 }
 227
 228 static int parse_tunnel_attr(struct mlx5e_priv *priv,
 229                              struct mlx5_flow_spec *spec,
 230                              struct tc_cls_flower_offload *f)
 231 {
 232         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 233                                        outer_headers);
 234         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 235                                        outer_headers);
 236
 237         struct flow_dissector_key_control *enc_control =
 238                 skb_flow_dissector_target(f->dissector,
 239                                           FLOW_DISSECTOR_KEY_ENC_CONTROL,
 240                                           f->key);
 241
 242         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
 243                 struct flow_dissector_key_ports *key =
 244                         skb_flow_dissector_target(f->dissector,
 245                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
 246                                                   f->key);
 247                 struct flow_dissector_key_ports *mask =
 248                         skb_flow_dissector_target(f->dissector,
 249                                                   FLOW_DISSECTOR_KEY_ENC_PORTS,
 250                                                   f->mask);
 251
 252                 /* Full udp dst port must be given */
 253                 if (memchr_inv(&mask->dst, 0xff, sizeof(mask->dst)))
 254                         goto vxlan_match_offload_err;
 255
 256                 if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->dst)) &&
 257                     MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap))
 258                         parse_vxlan_attr(spec, f);
 259                 else {
 260                         netdev_warn(priv->netdev,
 261                                     "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->dst));
 262                         return -EOPNOTSUPP;
 263                 }
 264
 265                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 266                          udp_dport, ntohs(mask->dst));
 267                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 268                          udp_dport, ntohs(key->dst));
 269
 270                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 271                          udp_sport, ntohs(mask->src));
 272                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 273                          udp_sport, ntohs(key->src));
 274         } else { /* udp dst port must be given */
 275 vxlan_match_offload_err:
 276                 netdev_warn(priv->netdev,
 277                             "IP tunnel decap offload supported only for vxlan, must set UDP dport\n");
 278                 return -EOPNOTSUPP;
 279         }
 280
 281         if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
 282                 struct flow_dissector_key_ipv4_addrs *key =
 283                         skb_flow_dissector_target(f->dissector,
 284                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
 285                                                   f->key);
 286                 struct flow_dissector_key_ipv4_addrs *mask =
 287                         skb_flow_dissector_target(f->dissector,
 288                                                   FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS,
 289                                                   f->mask);
 290                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 291                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
 292                          ntohl(mask->src));
 293                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 294                          src_ipv4_src_ipv6.ipv4_layout.ipv4,
 295                          ntohl(key->src));
 296
 297                 MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 298                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
 299                          ntohl(mask->dst));
 300                 MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 301                          dst_ipv4_dst_ipv6.ipv4_layout.ipv4,
 302                          ntohl(key->dst));
 303
 304                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
 305                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IP);
 306         } else if (enc_control->addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
 307                 struct flow_dissector_key_ipv6_addrs *key =
 308                         skb_flow_dissector_target(f->dissector,
 309                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
 310                                                   f->key);
 311                 struct flow_dissector_key_ipv6_addrs *mask =
 312                         skb_flow_dissector_target(f->dissector,
 313                                                   FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS,
 314                                                   f->mask);
 315
 316                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 317                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 318                        &mask->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 319                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 320                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 321                        &key->src, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 322
 323                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 324                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 325                        &mask->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 326                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 327                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 328                        &key->dst, MLX5_FLD_SZ_BYTES(ipv6_layout, ipv6));
 329
 330                 MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, ethertype);
 331                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, ETH_P_IPV6);
 332         }
 333
 334         /* Enforce DMAC when offloading incoming tunneled flows.
 335          * Flow counters require a match on the DMAC.
 336          */
 337         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_47_16);
 338         MLX5_SET_TO_ONES(fte_match_set_lyr_2_4, headers_c, dmac_15_0);
 339         ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 340                                      dmac_47_16), priv->netdev->dev_addr);
 341
 342         /* let software handle IP fragments */
 343         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
 344         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag, 0);
 345
 346         return 0;
 347 }
 348
 349 static int __parse_cls_flower(struct mlx5e_priv *priv,
 350                               struct mlx5_flow_spec *spec,
 351                               struct tc_cls_flower_offload *f,
 352                               u8 *min_inline)
 353 {
 354         void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 355                                        outer_headers);
 356         void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 357                                        outer_headers);
 358         u16 addr_type = 0;
 359         u8 ip_proto = 0;
 360
 361         *min_inline = MLX5_INLINE_MODE_L2;
 362
 363         if (f->dissector->used_keys &
 364             ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) |
 365               BIT(FLOW_DISSECTOR_KEY_BASIC) |
 366               BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) |
 367               BIT(FLOW_DISSECTOR_KEY_VLAN) |
 368               BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) |
 369               BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) |
 370               BIT(FLOW_DISSECTOR_KEY_PORTS) |
 371               BIT(FLOW_DISSECTOR_KEY_ENC_KEYID) |
 372               BIT(FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) |
 373               BIT(FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS) |
 374               BIT(FLOW_DISSECTOR_KEY_ENC_PORTS) |
 375               BIT(FLOW_DISSECTOR_KEY_ENC_CONTROL))) {
 376                 netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n",
 377                             f->dissector->used_keys);
 378                 return -EOPNOTSUPP;
 379         }
 380
 381         if ((dissector_uses_key(f->dissector,
 382                                 FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS) ||
 383              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_KEYID) ||
 384              dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_PORTS)) &&
 385             dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ENC_CONTROL)) {
 386                 struct flow_dissector_key_control *key =
 387                         skb_flow_dissector_target(f->dissector,
 388                                                   FLOW_DISSECTOR_KEY_ENC_CONTROL,
 389                                                   f->key);
 390                 switch (key->addr_type) {
 391                 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
 392                 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
 393                         if (parse_tunnel_attr(priv, spec, f))
 394                                 return -EOPNOTSUPP;
 395                         break;
 396                 default:
 397                         return -EOPNOTSUPP;
 398                 }
 399
 400                 /* In decap flow, header pointers should point to the inner
 401                  * headers, outer header were already set by parse_tunnel_attr
 402                  */
 403                 headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
 404                                          inner_headers);
 405                 headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
 406                                          inner_headers);
 407         }
 408
 409         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) {
 410                 struct flow_dissector_key_control *key =
 411                         skb_flow_dissector_target(f->dissector,
 412                                                   FLOW_DISSECTOR_KEY_CONTROL,
 413                                                   f->key);
 414
 415                 struct flow_dissector_key_control *mask =
 416                         skb_flow_dissector_target(f->dissector,
 417                                                   FLOW_DISSECTOR_KEY_CONTROL,
 418                                                   f->mask);
 419                 addr_type = key->addr_type;
 420
 421                 if (mask->flags & FLOW_DIS_IS_FRAGMENT) {
 422                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, frag, 1);
 423                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, frag,
 424                                  key->flags & FLOW_DIS_IS_FRAGMENT);
 425
 426                         /* the HW doesn't need L3 inline to match on frag=no */
 427                         if (key->flags & FLOW_DIS_IS_FRAGMENT)
 428                                 *min_inline = MLX5_INLINE_MODE_IP;
 429                 }
 430         }
 431
 432         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) {
 433                 struct flow_dissector_key_basic *key =
 434                         skb_flow_dissector_target(f->dissector,
 435                                                   FLOW_DISSECTOR_KEY_BASIC,
 436                                                   f->key);
 437                 struct flow_dissector_key_basic *mask =
 438                         skb_flow_dissector_target(f->dissector,
 439                                                   FLOW_DISSECTOR_KEY_BASIC,
 440                                                   f->mask);
 441                 ip_proto = key->ip_proto;
 442
 443                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype,
 444                          ntohs(mask->n_proto));
 445                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype,
 446                          ntohs(key->n_proto));
 447
 448                 MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol,
 449                          mask->ip_proto);
 450                 MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol,
 451                          key->ip_proto);
 452
 453                 if (mask->ip_proto)
 454                         *min_inline = MLX5_INLINE_MODE_IP;
 455         }
 456
 457         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) {
 458                 struct flow_dissector_key_eth_addrs *key =
 459                         skb_flow_dissector_target(f->dissector,
 460                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
 461                                                   f->key);
 462                 struct flow_dissector_key_eth_addrs *mask =
 463                         skb_flow_dissector_target(f->dissector,
 464                                                   FLOW_DISSECTOR_KEY_ETH_ADDRS,
 465                                                   f->mask);
 466
 467                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 468                                              dmac_47_16),
 469                                 mask->dst);
 470                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 471                                              dmac_47_16),
 472                                 key->dst);
 473
 474                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 475                                              smac_47_16),
 476                                 mask->src);
 477                 ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 478                                              smac_47_16),
 479                                 key->src);
 480         }
 481
 482         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_VLAN)) {
 483                 struct flow_dissector_key_vlan *key =
 484                         skb_flow_dissector_target(f->dissector,
 485                                                   FLOW_DISSECTOR_KEY_VLAN,
 486                                                   f->key);
 487                 struct flow_dissector_key_vlan *mask =
 488                         skb_flow_dissector_target(f->dissector,
 489                                                   FLOW_DISSECTOR_KEY_VLAN,
 490                                                   f->mask);
 491                 if (mask->vlan_id || mask->vlan_priority) {
 492                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);
 493                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, cvlan_tag, 1);
 494
 495                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_vid, mask->vlan_id);
 496                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_vid, key->vlan_id);
 497
 498                         MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
 499                         MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
 500                 }
 501         }
 502
 503         if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {
 504                 struct flow_dissector_key_ipv4_addrs *key =
 505                         skb_flow_dissector_target(f->dissector,
 506                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
 507                                                   f->key);
 508                 struct flow_dissector_key_ipv4_addrs *mask =
 509                         skb_flow_dissector_target(f->dissector,
 510                                                   FLOW_DISSECTOR_KEY_IPV4_ADDRS,
 511                                                   f->mask);
 512
 513                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 514                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
 515                        &mask->src, sizeof(mask->src));
 516                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 517                                     src_ipv4_src_ipv6.ipv4_layout.ipv4),
 518                        &key->src, sizeof(key->src));
 519                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 520                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
 521                        &mask->dst, sizeof(mask->dst));
 522                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 523                                     dst_ipv4_dst_ipv6.ipv4_layout.ipv4),
 524                        &key->dst, sizeof(key->dst));
 525
 526                 if (mask->src || mask->dst)
 527                         *min_inline = MLX5_INLINE_MODE_IP;
 528         }
 529
 530         if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) {
 531                 struct flow_dissector_key_ipv6_addrs *key =
 532                         skb_flow_dissector_target(f->dissector,
 533                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
 534                                                   f->key);
 535                 struct flow_dissector_key_ipv6_addrs *mask =
 536                         skb_flow_dissector_target(f->dissector,
 537                                                   FLOW_DISSECTOR_KEY_IPV6_ADDRS,
 538                                                   f->mask);
 539
 540                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 541                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 542                        &mask->src, sizeof(mask->src));
 543                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 544                                     src_ipv4_src_ipv6.ipv6_layout.ipv6),
 545                        &key->src, sizeof(key->src));
 546
 547                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c,
 548                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 549                        &mask->dst, sizeof(mask->dst));
 550                 memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v,
 551                                     dst_ipv4_dst_ipv6.ipv6_layout.ipv6),
 552                        &key->dst, sizeof(key->dst));
 553
 554                 if (ipv6_addr_type(&mask->src) != IPV6_ADDR_ANY ||
 555                     ipv6_addr_type(&mask->dst) != IPV6_ADDR_ANY)
 556                         *min_inline = MLX5_INLINE_MODE_IP;
 557         }
 558
 559         if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) {
 560                 struct flow_dissector_key_ports *key =
 561                         skb_flow_dissector_target(f->dissector,
 562                                                   FLOW_DISSECTOR_KEY_PORTS,
 563                                                   f->key);
 564                 struct flow_dissector_key_ports *mask =
 565                         skb_flow_dissector_target(f->dissector,
 566                                                   FLOW_DISSECTOR_KEY_PORTS,
 567                                                   f->mask);
 568                 switch (ip_proto) {
 569                 case IPPROTO_TCP:
 570                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 571                                  tcp_sport, ntohs(mask->src));
 572                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 573                                  tcp_sport, ntohs(key->src));
 574
 575                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 576                                  tcp_dport, ntohs(mask->dst));
 577                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 578                                  tcp_dport, ntohs(key->dst));
 579                         break;
 580
 581                 case IPPROTO_UDP:
 582                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 583                                  udp_sport, ntohs(mask->src));
 584                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 585                                  udp_sport, ntohs(key->src));
 586
 587                         MLX5_SET(fte_match_set_lyr_2_4, headers_c,
 588                                  udp_dport, ntohs(mask->dst));
 589                         MLX5_SET(fte_match_set_lyr_2_4, headers_v,
 590                                  udp_dport, ntohs(key->dst));
 591                         break;
 592                 default:
 593                         netdev_err(priv->netdev,
 594                                    "Only UDP and TCP transport are supported\n");
 595                         return -EINVAL;
 596                 }
 597
 598                 if (mask->src || mask->dst)
 599                         *min_inline = MLX5_INLINE_MODE_TCP_UDP;
 600         }
 601
 602         return 0;
 603 }
 604
 605 static int parse_cls_flower(struct mlx5e_priv *priv,
 606                             struct mlx5e_tc_flow *flow,
 607                             struct mlx5_flow_spec *spec,
 608                             struct tc_cls_flower_offload *f)
 609 {
 610         struct mlx5_core_dev *dev = priv->mdev;
 611         struct mlx5_eswitch *esw = dev->priv.eswitch;
 612         struct mlx5_eswitch_rep *rep = priv->ppriv;
 613         u8 min_inline;
 614         int err;
 615
 616         err = __parse_cls_flower(priv, spec, f, &min_inline);
 617
 618         if (!err && (flow->flags & MLX5E_TC_FLOW_ESWITCH) &&
 619             rep->vport != FDB_UPLINK_VPORT) {
 620                 if (min_inline > esw->offloads.inline_mode) {
 621                         netdev_warn(priv->netdev,
 622                                     "Flow is not offloaded due to min inline setting, required %d actual %d\n",
 623                                     min_inline, esw->offloads.inline_mode);
 624                         return -EOPNOTSUPP;
 625                 }
 626         }
 627
 628         return err;
 629 }
 630
 631 static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
 632                                 u32 *action, u32 *flow_tag)
 633 {
 634         const struct tc_action *a;
 635         LIST_HEAD(actions);
 636
 637         if (tc_no_actions(exts))
 638                 return -EINVAL;
 639
 640         *flow_tag = MLX5_FS_DEFAULT_FLOW_TAG;
 641         *action = 0;
 642
 643         tcf_exts_to_list(exts, &actions);
 644         list_for_each_entry(a, &actions, list) {
 645                 /* Only support a single action per rule */
 646                 if (*action)
 647                         return -EINVAL;
 648
 649                 if (is_tcf_gact_shot(a)) {
 650                         *action |= MLX5_FLOW_CONTEXT_ACTION_DROP;
 651                         if (MLX5_CAP_FLOWTABLE(priv->mdev,
 652                                                flow_table_properties_nic_receive.flow_counter))
 653                                 *action |= MLX5_FLOW_CONTEXT_ACTION_COUNT;
 654                         continue;
 655                 }
 656
 657                 if (is_tcf_skbedit_mark(a)) {
 658                         u32 mark = tcf_skbedit_mark(a);
 659
 660                         if (mark & ~MLX5E_TC_FLOW_ID_MASK) {
 661                                 netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n",
 662                                             mark);
 663                                 return -EINVAL;
 664                         }
 665
 666                         *flow_tag = mark;
 667                         *action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST;
 668                         continue;
 669                 }
 670
 671                 return -EINVAL;
 672         }
 673
 674         return 0;
 675 }
 676
 677 static inline int cmp_encap_info(struct ip_tunnel_key *a,
 678                                  struct ip_tunnel_key *b)
 679 {
 680         return memcmp(a, b, sizeof(*a));
 681 }
 682
 683 static inline int hash_encap_info(struct ip_tunnel_key *key)
 684 {
 685         return jhash(key, sizeof(*key), 0);
 686 }
 687
 688 static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
 689                                    struct net_device *mirred_dev,
 690                                    struct net_device **out_dev,
 691                                    struct flowi4 *fl4,
 692                                    struct neighbour **out_n,
 693                                    int *out_ttl)
 694 {
 695         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 696         struct rtable *rt;
 697         struct neighbour *n = NULL;
 698
 699 #if IS_ENABLED(CONFIG_INET)
 700         int ret;
 701
 702         rt = ip_route_output_key(dev_net(mirred_dev), fl4);
 703         ret = PTR_ERR_OR_ZERO(rt);
 704         if (ret)
 705                 return ret;
 706 #else
 707         return -EOPNOTSUPP;
 708 #endif
 709         /* if the egress device isn't on the same HW e-switch, we use the uplink */
 710         if (!switchdev_port_same_parent_id(priv->netdev, rt->dst.dev))
 711                 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
 712         else
 713                 *out_dev = rt->dst.dev;
 714
 715         *out_ttl = ip4_dst_hoplimit(&rt->dst);
 716         n = dst_neigh_lookup(&rt->dst, &fl4->daddr);
 717         ip_rt_put(rt);
 718         if (!n)
 719                 return -ENOMEM;
 720
 721         *out_n = n;
 722         return 0;
 723 }
 724
 725 static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
 726                                    struct net_device *mirred_dev,
 727                                    struct net_device **out_dev,
 728                                    struct flowi6 *fl6,
 729                                    struct neighbour **out_n,
 730                                    int *out_ttl)
 731 {
 732         struct neighbour *n = NULL;
 733         struct dst_entry *dst;
 734
 735 #if IS_ENABLED(CONFIG_INET) && IS_ENABLED(CONFIG_IPV6)
 736         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 737         int ret;
 738
 739         dst = ip6_route_output(dev_net(mirred_dev), NULL, fl6);
 740         ret = dst->error;
 741         if (ret) {
 742                 dst_release(dst);
 743                 return ret;
 744         }
 745
 746         *out_ttl = ip6_dst_hoplimit(dst);
 747
 748         /* if the egress device isn't on the same HW e-switch, we use the uplink */
 749         if (!switchdev_port_same_parent_id(priv->netdev, dst->dev))
 750                 *out_dev = mlx5_eswitch_get_uplink_netdev(esw);
 751         else
 752                 *out_dev = dst->dev;
 753 #else
 754         return -EOPNOTSUPP;
 755 #endif
 756
 757         n = dst_neigh_lookup(dst, &fl6->daddr);
 758         dst_release(dst);
 759         if (!n)
 760                 return -ENOMEM;
 761
 762         *out_n = n;
 763         return 0;
 764 }
 765
 766 static int gen_vxlan_header_ipv4(struct net_device *out_dev,
 767                                  char buf[],
 768                                  unsigned char h_dest[ETH_ALEN],
 769                                  int ttl,
 770                                  __be32 daddr,
 771                                  __be32 saddr,
 772                                  __be16 udp_dst_port,
 773                                  __be32 vx_vni)
 774 {
 775         int encap_size = VXLAN_HLEN + sizeof(struct iphdr) + ETH_HLEN;
 776         struct ethhdr *eth = (struct ethhdr *)buf;
 777         struct iphdr  *ip = (struct iphdr *)((char *)eth + sizeof(struct ethhdr));
 778         struct udphdr *udp = (struct udphdr *)((char *)ip + sizeof(struct iphdr));
 779         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
 780
 781         memset(buf, 0, encap_size);
 782
 783         ether_addr_copy(eth->h_dest, h_dest);
 784         ether_addr_copy(eth->h_source, out_dev->dev_addr);
 785         eth->h_proto = htons(ETH_P_IP);
 786
 787         ip->daddr = daddr;
 788         ip->saddr = saddr;
 789
 790         ip->ttl = ttl;
 791         ip->protocol = IPPROTO_UDP;
 792         ip->version = 0x4;
 793         ip->ihl = 0x5;
 794
 795         udp->dest = udp_dst_port;
 796         vxh->vx_flags = VXLAN_HF_VNI;
 797         vxh->vx_vni = vxlan_vni_field(vx_vni);
 798
 799         return encap_size;
 800 }
 801
 802 static int gen_vxlan_header_ipv6(struct net_device *out_dev,
 803                                  char buf[],
 804                                  unsigned char h_dest[ETH_ALEN],
 805                                  int ttl,
 806                                  struct in6_addr *daddr,
 807                                  struct in6_addr *saddr,
 808                                  __be16 udp_dst_port,
 809                                  __be32 vx_vni)
 810 {
 811         int encap_size = VXLAN_HLEN + sizeof(struct ipv6hdr) + ETH_HLEN;
 812         struct ethhdr *eth = (struct ethhdr *)buf;
 813         struct ipv6hdr *ip6h = (struct ipv6hdr *)((char *)eth + sizeof(struct ethhdr));
 814         struct udphdr *udp = (struct udphdr *)((char *)ip6h + sizeof(struct ipv6hdr));
 815         struct vxlanhdr *vxh = (struct vxlanhdr *)((char *)udp + sizeof(struct udphdr));
 816
 817         memset(buf, 0, encap_size);
 818
 819         ether_addr_copy(eth->h_dest, h_dest);
 820         ether_addr_copy(eth->h_source, out_dev->dev_addr);
 821         eth->h_proto = htons(ETH_P_IPV6);
 822
 823         ip6_flow_hdr(ip6h, 0, 0);
 824         /* the HW fills up ipv6 payload len */
 825         ip6h->nexthdr     = IPPROTO_UDP;
 826         ip6h->hop_limit   = ttl;
 827         ip6h->daddr       = *daddr;
 828         ip6h->saddr       = *saddr;
 829
 830         udp->dest = udp_dst_port;
 831         vxh->vx_flags = VXLAN_HF_VNI;
 832         vxh->vx_vni = vxlan_vni_field(vx_vni);
 833
 834         return encap_size;
 835 }
 836
 837 static int mlx5e_create_encap_header_ipv4(struct mlx5e_priv *priv,
 838                                           struct net_device *mirred_dev,
 839                                           struct mlx5_encap_entry *e,
 840                                           struct net_device **out_dev)
 841 {
 842         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
 843         struct ip_tunnel_key *tun_key = &e->tun_info.key;
 844         int encap_size, ttl, err;
 845         struct neighbour *n = NULL;
 846         struct flowi4 fl4 = {};
 847         char *encap_header;
 848
 849         encap_header = kzalloc(max_encap_size, GFP_KERNEL);
 850         if (!encap_header)
 851                 return -ENOMEM;
 852
 853         switch (e->tunnel_type) {
 854         case MLX5_HEADER_TYPE_VXLAN:
 855                 fl4.flowi4_proto = IPPROTO_UDP;
 856                 fl4.fl4_dport = tun_key->tp_dst;
 857                 break;
 858         default:
 859                 err = -EOPNOTSUPP;
 860                 goto out;
 861         }
 862         fl4.flowi4_tos = tun_key->tos;
 863         fl4.daddr = tun_key->u.ipv4.dst;
 864         fl4.saddr = tun_key->u.ipv4.src;
 865
 866         err = mlx5e_route_lookup_ipv4(priv, mirred_dev, out_dev,
 867                                       &fl4, &n, &ttl);
 868         if (err)
 869                 goto out;
 870
 871         if (!(n->nud_state & NUD_VALID)) {
 872                 pr_warn("%s: can't offload, neighbour to %pI4 invalid\n", __func__, &fl4.daddr);
 873                 err = -EOPNOTSUPP;
 874                 goto out;
 875         }
 876
 877         e->n = n;
 878         e->out_dev = *out_dev;
 879
 880         neigh_ha_snapshot(e->h_dest, n, *out_dev);
 881
 882         switch (e->tunnel_type) {
 883         case MLX5_HEADER_TYPE_VXLAN:
 884                 encap_size = gen_vxlan_header_ipv4(*out_dev, encap_header,
 885                                                    e->h_dest, ttl,
 886                                                    fl4.daddr,
 887                                                    fl4.saddr, tun_key->tp_dst,
 888                                                    tunnel_id_to_key32(tun_key->tun_id));
 889                 break;
 890         default:
 891                 err = -EOPNOTSUPP;
 892                 goto out;
 893         }
 894
 895         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
 896                                encap_size, encap_header, &e->encap_id);
 897 out:
 898         if (err && n)
 899                 neigh_release(n);
 900         kfree(encap_header);
 901         return err;
 902 }
 903
 904 static int mlx5e_create_encap_header_ipv6(struct mlx5e_priv *priv,
 905                                           struct net_device *mirred_dev,
 906                                           struct mlx5_encap_entry *e,
 907                                           struct net_device **out_dev)
 908
 909 {
 910         int max_encap_size = MLX5_CAP_ESW(priv->mdev, max_encap_header_size);
 911         struct ip_tunnel_key *tun_key = &e->tun_info.key;
 912         int encap_size, err, ttl = 0;
 913         struct neighbour *n = NULL;
 914         struct flowi6 fl6 = {};
 915         char *encap_header;
 916
 917         encap_header = kzalloc(max_encap_size, GFP_KERNEL);
 918         if (!encap_header)
 919                 return -ENOMEM;
 920
 921         switch (e->tunnel_type) {
 922         case MLX5_HEADER_TYPE_VXLAN:
 923                 fl6.flowi6_proto = IPPROTO_UDP;
 924                 fl6.fl6_dport = tun_key->tp_dst;
 925                 break;
 926         default:
 927                 err = -EOPNOTSUPP;
 928                 goto out;
 929         }
 930
 931         fl6.flowlabel = ip6_make_flowinfo(RT_TOS(tun_key->tos), tun_key->label);
 932         fl6.daddr = tun_key->u.ipv6.dst;
 933         fl6.saddr = tun_key->u.ipv6.src;
 934
 935         err = mlx5e_route_lookup_ipv6(priv, mirred_dev, out_dev,
 936                                       &fl6, &n, &ttl);
 937         if (err)
 938                 goto out;
 939
 940         if (!(n->nud_state & NUD_VALID)) {
 941                 pr_warn("%s: can't offload, neighbour to %pI6 invalid\n", __func__, &fl6.daddr);
 942                 err = -EOPNOTSUPP;
 943                 goto out;
 944         }
 945
 946         e->n = n;
 947         e->out_dev = *out_dev;
 948
 949         neigh_ha_snapshot(e->h_dest, n, *out_dev);
 950
 951         switch (e->tunnel_type) {
 952         case MLX5_HEADER_TYPE_VXLAN:
 953                 encap_size = gen_vxlan_header_ipv6(*out_dev, encap_header,
 954                                                    e->h_dest, ttl,
 955                                                    &fl6.daddr,
 956                                                    &fl6.saddr, tun_key->tp_dst,
 957                                                    tunnel_id_to_key32(tun_key->tun_id));
 958                 break;
 959         default:
 960                 err = -EOPNOTSUPP;
 961                 goto out;
 962         }
 963
 964         err = mlx5_encap_alloc(priv->mdev, e->tunnel_type,
 965                                encap_size, encap_header, &e->encap_id);
 966 out:
 967         if (err && n)
 968                 neigh_release(n);
 969         kfree(encap_header);
 970         return err;
 971 }
 972
 973 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
 974                               struct ip_tunnel_info *tun_info,
 975                               struct net_device *mirred_dev,
 976                               struct mlx5_esw_flow_attr *attr)
 977 {
 978         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 979         unsigned short family = ip_tunnel_info_af(tun_info);
 980         struct ip_tunnel_key *key = &tun_info->key;
 981         struct mlx5_encap_entry *e;
 982         struct net_device *out_dev;
 983         int tunnel_type, err = -EOPNOTSUPP;
 984         uintptr_t hash_key;
 985         bool found = false;
 986
 987         /* udp dst port must be set */
 988         if (!memchr_inv(&key->tp_dst, 0, sizeof(key->tp_dst)))
 989                 goto vxlan_encap_offload_err;
 990
 991         /* setting udp src port isn't supported */
 992         if (memchr_inv(&key->tp_src, 0, sizeof(key->tp_src))) {
 993 vxlan_encap_offload_err:
 994                 netdev_warn(priv->netdev,
 995                             "must set udp dst port and not set udp src port\n");
 996                 return -EOPNOTSUPP;
 997         }
 998
 999         if (mlx5e_vxlan_lookup_port(priv, be16_to_cpu(key->tp_dst)) &&
1000             MLX5_CAP_ESW(priv->mdev, vxlan_encap_decap)) {
1001                 tunnel_type = MLX5_HEADER_TYPE_VXLAN;
1002         } else {
1003                 netdev_warn(priv->netdev,
1004                             "%d isn't an offloaded vxlan udp dport\n", be16_to_cpu(key->tp_dst));
1005                 return -EOPNOTSUPP;
1006         }
1007
1008         hash_key = hash_encap_info(key);
1009
1010         hash_for_each_possible_rcu(esw->offloads.encap_tbl, e,
1011                                    encap_hlist, hash_key) {
1012                 if (!cmp_encap_info(&e->tun_info.key, key)) {
1013                         found = true;
1014                         break;
1015                 }
1016         }
1017
1018         if (found) {
1019                 attr->encap = e;
1020                 return 0;
1021         }
1022
1023         e = kzalloc(sizeof(*e), GFP_KERNEL);
1024         if (!e)
1025                 return -ENOMEM;
1026
1027         e->tun_info = *tun_info;
1028         e->tunnel_type = tunnel_type;
1029         INIT_LIST_HEAD(&e->flows);
1030
1031         if (family == AF_INET)
1032                 err = mlx5e_create_encap_header_ipv4(priv, mirred_dev, e, &out_dev);
1033         else if (family == AF_INET6)
1034                 err = mlx5e_create_encap_header_ipv6(priv, mirred_dev, e, &out_dev);
1035
1036         if (err)
1037                 goto out_err;
1038
1039         attr->encap = e;
1040         hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
1041
1042         return err;
1043
1044 out_err:
1045         kfree(e);
1046         return err;
1047 }
1048
1049 static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
1050                                 struct mlx5e_tc_flow *flow)
1051 {
1052         struct mlx5_esw_flow_attr *attr = flow->attr;
1053         struct ip_tunnel_info *info = NULL;
1054         const struct tc_action *a;
1055         LIST_HEAD(actions);
1056         bool encap = false;
1057         int err;
1058
1059         if (tc_no_actions(exts))
1060                 return -EINVAL;
1061
1062         memset(attr, 0, sizeof(*attr));
1063         attr->in_rep = priv->ppriv;
1064
1065         tcf_exts_to_list(exts, &actions);
1066         list_for_each_entry(a, &actions, list) {
1067                 if (is_tcf_gact_shot(a)) {
1068                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DROP |
1069                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1070                         continue;
1071                 }
1072
1073                 if (is_tcf_mirred_egress_redirect(a)) {
1074                         int ifindex = tcf_mirred_ifindex(a);
1075                         struct net_device *out_dev;
1076                         struct mlx5e_priv *out_priv;
1077
1078                         out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
1079
1080                         if (switchdev_port_same_parent_id(priv->netdev,
1081                                                           out_dev)) {
1082                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1083                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1084                                 out_priv = netdev_priv(out_dev);
1085                                 attr->out_rep = out_priv->ppriv;
1086                         } else if (encap) {
1087                                 err = mlx5e_attach_encap(priv, info,
1088                                                          out_dev, attr);
1089                                 if (err)
1090                                         return err;
1091                                 list_add(&flow->encap, &attr->encap->flows);
1092                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
1093                                         MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
1094                                         MLX5_FLOW_CONTEXT_ACTION_COUNT;
1095                                 out_priv = netdev_priv(attr->encap->out_dev);
1096                                 attr->out_rep = out_priv->ppriv;
1097                         } else {
1098                                 pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
1099                                        priv->netdev->name, out_dev->name);
1100                                 return -EINVAL;
1101                         }
1102                         continue;
1103                 }
1104
1105                 if (is_tcf_tunnel_set(a)) {
1106                         info = tcf_tunnel_info(a);
1107                         if (info)
1108                                 encap = true;
1109                         else
1110                                 return -EOPNOTSUPP;
1111                         continue;
1112                 }
1113
1114                 if (is_tcf_vlan(a)) {
1115                         if (tcf_vlan_action(a) == VLAN_F_POP) {
1116                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_POP;
1117                         } else if (tcf_vlan_action(a) == VLAN_F_PUSH) {
1118                                 if (tcf_vlan_push_proto(a) != htons(ETH_P_8021Q))
1119                                         return -EOPNOTSUPP;
1120
1121                                 attr->action |= MLX5_FLOW_CONTEXT_ACTION_VLAN_PUSH;
1122                                 attr->vlan = tcf_vlan_push_vid(a);
1123                         }
1124                         continue;
1125                 }
1126
1127                 if (is_tcf_tunnel_release(a)) {
1128                         attr->action |= MLX5_FLOW_CONTEXT_ACTION_DECAP;
1129                         continue;
1130                 }
1131
1132                 return -EINVAL;
1133         }
1134         return 0;
1135 }
1136
1137 int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol,
1138                            struct tc_cls_flower_offload *f)
1139 {
1140         struct mlx5e_tc_table *tc = &priv->fs.tc;
1141         int err, attr_size = 0;
1142         u32 flow_tag, action;
1143         struct mlx5e_tc_flow *flow;
1144         struct mlx5_flow_spec *spec;
1145         struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
1146         u8 flow_flags = 0;
1147
1148         if (esw && esw->mode == SRIOV_OFFLOADS) {
1149                 flow_flags = MLX5E_TC_FLOW_ESWITCH;
1150                 attr_size  = sizeof(struct mlx5_esw_flow_attr);
1151         }
1152
1153         flow = kzalloc(sizeof(*flow) + attr_size, GFP_KERNEL);
1154         spec = mlx5_vzalloc(sizeof(*spec));
1155         if (!spec || !flow) {
1156                 err = -ENOMEM;
1157                 goto err_free;
1158         }
1159
1160         flow->cookie = f->cookie;
1161         flow->flags = flow_flags;
1162
1163         err = parse_cls_flower(priv, flow, spec, f);
1164         if (err < 0)
1165                 goto err_free;
1166
1167         if (flow->flags & MLX5E_TC_FLOW_ESWITCH) {
1168                 flow->attr  = (struct mlx5_esw_flow_attr *)(flow + 1);
1169                 err = parse_tc_fdb_actions(priv, f->exts, flow);
1170                 if (err < 0)
1171                         goto err_free;
1172                 flow->rule = mlx5e_tc_add_fdb_flow(priv, spec, flow->attr);
1173         } else {
1174                 err = parse_tc_nic_actions(priv, f->exts, &action, &flow_tag);
1175                 if (err < 0)
1176                         goto err_free;
1177                 flow->rule = mlx5e_tc_add_nic_flow(priv, spec, action, flow_tag);
1178         }
1179
1180         if (IS_ERR(flow->rule)) {
1181                 err = PTR_ERR(flow->rule);
1182                 goto err_del_rule;
1183         }
1184
1185         err = rhashtable_insert_fast(&tc->ht, &flow->node,
1186                                      tc->ht_params);
1187         if (err)
1188                 goto err_del_rule;
1189
1190         goto out;
1191
1192 err_del_rule:
1193         mlx5e_tc_del_flow(priv, flow);
1194
1195 err_free:
1196         kfree(flow);
1197 out:
1198         kvfree(spec);
1199         return err;
1200 }
1201
1202 int mlx5e_delete_flower(struct mlx5e_priv *priv,
1203                         struct tc_cls_flower_offload *f)
1204 {
1205         struct mlx5e_tc_flow *flow;
1206         struct mlx5e_tc_table *tc = &priv->fs.tc;
1207
1208         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1209                                       tc->ht_params);
1210         if (!flow)
1211                 return -EINVAL;
1212
1213         rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params);
1214
1215         mlx5e_tc_del_flow(priv, flow);
1216
1217
1218         kfree(flow);
1219
1220         return 0;
1221 }
1222
1223 int mlx5e_stats_flower(struct mlx5e_priv *priv,
1224                        struct tc_cls_flower_offload *f)
1225 {
1226         struct mlx5e_tc_table *tc = &priv->fs.tc;
1227         struct mlx5e_tc_flow *flow;
1228         struct tc_action *a;
1229         struct mlx5_fc *counter;
1230         LIST_HEAD(actions);
1231         u64 bytes;
1232         u64 packets;
1233         u64 lastuse;
1234
1235         flow = rhashtable_lookup_fast(&tc->ht, &f->cookie,
1236                                       tc->ht_params);
1237         if (!flow)
1238                 return -EINVAL;
1239
1240         counter = mlx5_flow_rule_counter(flow->rule);
1241         if (!counter)
1242                 return 0;
1243
1244         mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse);
1245
1246         preempt_disable();
1247
1248         tcf_exts_to_list(f->exts, &actions);
1249         list_for_each_entry(a, &actions, list)
1250                 tcf_action_stats_update(a, bytes, packets, lastuse);
1251
1252         preempt_enable();
1253
1254         return 0;
1255 }
1256
1257 static const struct rhashtable_params mlx5e_tc_flow_ht_params = {
1258         .head_offset = offsetof(struct mlx5e_tc_flow, node),
1259         .key_offset = offsetof(struct mlx5e_tc_flow, cookie),
1260         .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie),
1261         .automatic_shrinking = true,
1262 };
1263
1264 int mlx5e_tc_init(struct mlx5e_priv *priv)
1265 {
1266         struct mlx5e_tc_table *tc = &priv->fs.tc;
1267
1268         tc->ht_params = mlx5e_tc_flow_ht_params;
1269         return rhashtable_init(&tc->ht, &tc->ht_params);
1270 }
1271
1272 static void _mlx5e_tc_del_flow(void *ptr, void *arg)
1273 {
1274         struct mlx5e_tc_flow *flow = ptr;
1275         struct mlx5e_priv *priv = arg;
1276
1277         mlx5e_tc_del_flow(priv, flow);
1278         kfree(flow);
1279 }
1280
1281 void mlx5e_tc_cleanup(struct mlx5e_priv *priv)
1282 {
1283         struct mlx5e_tc_table *tc = &priv->fs.tc;
1284
1285         rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv);
1286
1287         if (!IS_ERR_OR_NULL(tc->t)) {
1288                 mlx5_destroy_flow_table(tc->t);
1289                 tc->t = NULL;
1290         }
1291 }