| 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/pkt_cls.h> |
| 35 | #include <net/tc_act/tc_gact.h> |
| 36 | #include <net/tc_act/tc_skbedit.h> |
| 37 | #include <linux/mlx5/fs.h> |
| 38 | #include <linux/mlx5/device.h> |
| 39 | #include <linux/rhashtable.h> |
| 40 | #include <net/switchdev.h> |
| 41 | #include <net/tc_act/tc_mirred.h> |
| 42 | #include <net/tc_act/tc_vlan.h> |
| 43 | #include "en.h" |
| 44 | #include "en_tc.h" |
| 45 | #include "eswitch.h" |
| 46 | |
| 47 | struct mlx5e_tc_flow { |
| 48 | struct rhash_head node; |
| 49 | u64 cookie; |
| 50 | struct mlx5_flow_rule *rule; |
| 51 | struct mlx5_esw_flow_attr *attr; |
| 52 | }; |
| 53 | |
| 54 | #define MLX5E_TC_TABLE_NUM_ENTRIES 1024 |
| 55 | #define MLX5E_TC_TABLE_NUM_GROUPS 4 |
| 56 | |
| 57 | static struct mlx5_flow_rule *mlx5e_tc_add_nic_flow(struct mlx5e_priv *priv, |
| 58 | struct mlx5_flow_spec *spec, |
| 59 | u32 action, u32 flow_tag) |
| 60 | { |
| 61 | struct mlx5_core_dev *dev = priv->mdev; |
| 62 | struct mlx5_flow_destination dest = { 0 }; |
| 63 | struct mlx5_fc *counter = NULL; |
| 64 | struct mlx5_flow_rule *rule; |
| 65 | bool table_created = false; |
| 66 | |
| 67 | if (action & MLX5_FLOW_CONTEXT_ACTION_FWD_DEST) { |
| 68 | dest.type = MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE; |
| 69 | dest.ft = priv->fs.vlan.ft.t; |
| 70 | } else if (action & MLX5_FLOW_CONTEXT_ACTION_COUNT) { |
| 71 | counter = mlx5_fc_create(dev, true); |
| 72 | if (IS_ERR(counter)) |
| 73 | return ERR_CAST(counter); |
| 74 | |
| 75 | dest.type = MLX5_FLOW_DESTINATION_TYPE_COUNTER; |
| 76 | dest.counter = counter; |
| 77 | } |
| 78 | |
| 79 | if (IS_ERR_OR_NULL(priv->fs.tc.t)) { |
| 80 | priv->fs.tc.t = |
| 81 | mlx5_create_auto_grouped_flow_table(priv->fs.ns, |
| 82 | MLX5E_TC_PRIO, |
| 83 | MLX5E_TC_TABLE_NUM_ENTRIES, |
| 84 | MLX5E_TC_TABLE_NUM_GROUPS, |
| 85 | 0); |
| 86 | if (IS_ERR(priv->fs.tc.t)) { |
| 87 | netdev_err(priv->netdev, |
| 88 | "Failed to create tc offload table\n"); |
| 89 | rule = ERR_CAST(priv->fs.tc.t); |
| 90 | goto err_create_ft; |
| 91 | } |
| 92 | |
| 93 | table_created = true; |
| 94 | } |
| 95 | |
| 96 | spec->match_criteria_enable = MLX5_MATCH_OUTER_HEADERS; |
| 97 | rule = mlx5_add_flow_rule(priv->fs.tc.t, spec, |
| 98 | action, flow_tag, |
| 99 | &dest); |
| 100 | |
| 101 | if (IS_ERR(rule)) |
| 102 | goto err_add_rule; |
| 103 | |
| 104 | return rule; |
| 105 | |
| 106 | err_add_rule: |
| 107 | if (table_created) { |
| 108 | mlx5_destroy_flow_table(priv->fs.tc.t); |
| 109 | priv->fs.tc.t = NULL; |
| 110 | } |
| 111 | err_create_ft: |
| 112 | mlx5_fc_destroy(dev, counter); |
| 113 | |
| 114 | return rule; |
| 115 | } |
| 116 | |
| 117 | static struct mlx5_flow_rule *mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv, |
| 118 | struct mlx5_flow_spec *spec, |
| 119 | struct mlx5_esw_flow_attr *attr) |
| 120 | { |
| 121 | struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| 122 | |
| 123 | return mlx5_eswitch_add_offloaded_rule(esw, spec, attr); |
| 124 | } |
| 125 | |
| 126 | static void mlx5e_tc_del_flow(struct mlx5e_priv *priv, |
| 127 | struct mlx5_flow_rule *rule) |
| 128 | { |
| 129 | struct mlx5_fc *counter = NULL; |
| 130 | |
| 131 | counter = mlx5_flow_rule_counter(rule); |
| 132 | |
| 133 | mlx5_del_flow_rule(rule); |
| 134 | |
| 135 | mlx5_fc_destroy(priv->mdev, counter); |
| 136 | |
| 137 | if (!mlx5e_tc_num_filters(priv) && (priv->fs.tc.t)) { |
| 138 | mlx5_destroy_flow_table(priv->fs.tc.t); |
| 139 | priv->fs.tc.t = NULL; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | static int parse_cls_flower(struct mlx5e_priv *priv, struct mlx5_flow_spec *spec, |
| 144 | struct tc_cls_flower_offload *f) |
| 145 | { |
| 146 | void *headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria, |
| 147 | outer_headers); |
| 148 | void *headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, |
| 149 | outer_headers); |
| 150 | u16 addr_type = 0; |
| 151 | u8 ip_proto = 0; |
| 152 | |
| 153 | if (f->dissector->used_keys & |
| 154 | ~(BIT(FLOW_DISSECTOR_KEY_CONTROL) | |
| 155 | BIT(FLOW_DISSECTOR_KEY_BASIC) | |
| 156 | BIT(FLOW_DISSECTOR_KEY_ETH_ADDRS) | |
| 157 | BIT(FLOW_DISSECTOR_KEY_IPV4_ADDRS) | |
| 158 | BIT(FLOW_DISSECTOR_KEY_IPV6_ADDRS) | |
| 159 | BIT(FLOW_DISSECTOR_KEY_PORTS))) { |
| 160 | netdev_warn(priv->netdev, "Unsupported key used: 0x%x\n", |
| 161 | f->dissector->used_keys); |
| 162 | return -EOPNOTSUPP; |
| 163 | } |
| 164 | |
| 165 | if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_CONTROL)) { |
| 166 | struct flow_dissector_key_control *key = |
| 167 | skb_flow_dissector_target(f->dissector, |
| 168 | FLOW_DISSECTOR_KEY_CONTROL, |
| 169 | f->key); |
| 170 | addr_type = key->addr_type; |
| 171 | } |
| 172 | |
| 173 | if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_BASIC)) { |
| 174 | struct flow_dissector_key_basic *key = |
| 175 | skb_flow_dissector_target(f->dissector, |
| 176 | FLOW_DISSECTOR_KEY_BASIC, |
| 177 | f->key); |
| 178 | struct flow_dissector_key_basic *mask = |
| 179 | skb_flow_dissector_target(f->dissector, |
| 180 | FLOW_DISSECTOR_KEY_BASIC, |
| 181 | f->mask); |
| 182 | ip_proto = key->ip_proto; |
| 183 | |
| 184 | MLX5_SET(fte_match_set_lyr_2_4, headers_c, ethertype, |
| 185 | ntohs(mask->n_proto)); |
| 186 | MLX5_SET(fte_match_set_lyr_2_4, headers_v, ethertype, |
| 187 | ntohs(key->n_proto)); |
| 188 | |
| 189 | MLX5_SET(fte_match_set_lyr_2_4, headers_c, ip_protocol, |
| 190 | mask->ip_proto); |
| 191 | MLX5_SET(fte_match_set_lyr_2_4, headers_v, ip_protocol, |
| 192 | key->ip_proto); |
| 193 | } |
| 194 | |
| 195 | if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_ETH_ADDRS)) { |
| 196 | struct flow_dissector_key_eth_addrs *key = |
| 197 | skb_flow_dissector_target(f->dissector, |
| 198 | FLOW_DISSECTOR_KEY_ETH_ADDRS, |
| 199 | f->key); |
| 200 | struct flow_dissector_key_eth_addrs *mask = |
| 201 | skb_flow_dissector_target(f->dissector, |
| 202 | FLOW_DISSECTOR_KEY_ETH_ADDRS, |
| 203 | f->mask); |
| 204 | |
| 205 | ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| 206 | dmac_47_16), |
| 207 | mask->dst); |
| 208 | ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| 209 | dmac_47_16), |
| 210 | key->dst); |
| 211 | |
| 212 | ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| 213 | smac_47_16), |
| 214 | mask->src); |
| 215 | ether_addr_copy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| 216 | smac_47_16), |
| 217 | key->src); |
| 218 | } |
| 219 | |
| 220 | if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) { |
| 221 | struct flow_dissector_key_ipv4_addrs *key = |
| 222 | skb_flow_dissector_target(f->dissector, |
| 223 | FLOW_DISSECTOR_KEY_IPV4_ADDRS, |
| 224 | f->key); |
| 225 | struct flow_dissector_key_ipv4_addrs *mask = |
| 226 | skb_flow_dissector_target(f->dissector, |
| 227 | FLOW_DISSECTOR_KEY_IPV4_ADDRS, |
| 228 | f->mask); |
| 229 | |
| 230 | memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| 231 | src_ipv4_src_ipv6.ipv4_layout.ipv4), |
| 232 | &mask->src, sizeof(mask->src)); |
| 233 | memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| 234 | src_ipv4_src_ipv6.ipv4_layout.ipv4), |
| 235 | &key->src, sizeof(key->src)); |
| 236 | memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| 237 | dst_ipv4_dst_ipv6.ipv4_layout.ipv4), |
| 238 | &mask->dst, sizeof(mask->dst)); |
| 239 | memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| 240 | dst_ipv4_dst_ipv6.ipv4_layout.ipv4), |
| 241 | &key->dst, sizeof(key->dst)); |
| 242 | } |
| 243 | |
| 244 | if (addr_type == FLOW_DISSECTOR_KEY_IPV6_ADDRS) { |
| 245 | struct flow_dissector_key_ipv6_addrs *key = |
| 246 | skb_flow_dissector_target(f->dissector, |
| 247 | FLOW_DISSECTOR_KEY_IPV6_ADDRS, |
| 248 | f->key); |
| 249 | struct flow_dissector_key_ipv6_addrs *mask = |
| 250 | skb_flow_dissector_target(f->dissector, |
| 251 | FLOW_DISSECTOR_KEY_IPV6_ADDRS, |
| 252 | f->mask); |
| 253 | |
| 254 | memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| 255 | src_ipv4_src_ipv6.ipv6_layout.ipv6), |
| 256 | &mask->src, sizeof(mask->src)); |
| 257 | memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| 258 | src_ipv4_src_ipv6.ipv6_layout.ipv6), |
| 259 | &key->src, sizeof(key->src)); |
| 260 | |
| 261 | memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_c, |
| 262 | dst_ipv4_dst_ipv6.ipv6_layout.ipv6), |
| 263 | &mask->dst, sizeof(mask->dst)); |
| 264 | memcpy(MLX5_ADDR_OF(fte_match_set_lyr_2_4, headers_v, |
| 265 | dst_ipv4_dst_ipv6.ipv6_layout.ipv6), |
| 266 | &key->dst, sizeof(key->dst)); |
| 267 | } |
| 268 | |
| 269 | if (dissector_uses_key(f->dissector, FLOW_DISSECTOR_KEY_PORTS)) { |
| 270 | struct flow_dissector_key_ports *key = |
| 271 | skb_flow_dissector_target(f->dissector, |
| 272 | FLOW_DISSECTOR_KEY_PORTS, |
| 273 | f->key); |
| 274 | struct flow_dissector_key_ports *mask = |
| 275 | skb_flow_dissector_target(f->dissector, |
| 276 | FLOW_DISSECTOR_KEY_PORTS, |
| 277 | f->mask); |
| 278 | switch (ip_proto) { |
| 279 | case IPPROTO_TCP: |
| 280 | MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| 281 | tcp_sport, ntohs(mask->src)); |
| 282 | MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| 283 | tcp_sport, ntohs(key->src)); |
| 284 | |
| 285 | MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| 286 | tcp_dport, ntohs(mask->dst)); |
| 287 | MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| 288 | tcp_dport, ntohs(key->dst)); |
| 289 | break; |
| 290 | |
| 291 | case IPPROTO_UDP: |
| 292 | MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| 293 | udp_sport, ntohs(mask->src)); |
| 294 | MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| 295 | udp_sport, ntohs(key->src)); |
| 296 | |
| 297 | MLX5_SET(fte_match_set_lyr_2_4, headers_c, |
| 298 | udp_dport, ntohs(mask->dst)); |
| 299 | MLX5_SET(fte_match_set_lyr_2_4, headers_v, |
| 300 | udp_dport, ntohs(key->dst)); |
| 301 | break; |
| 302 | default: |
| 303 | netdev_err(priv->netdev, |
| 304 | "Only UDP and TCP transport are supported\n"); |
| 305 | return -EINVAL; |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | return 0; |
| 310 | } |
| 311 | |
| 312 | static int parse_tc_nic_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, |
| 313 | u32 *action, u32 *flow_tag) |
| 314 | { |
| 315 | const struct tc_action *a; |
| 316 | LIST_HEAD(actions); |
| 317 | |
| 318 | if (tc_no_actions(exts)) |
| 319 | return -EINVAL; |
| 320 | |
| 321 | *flow_tag = MLX5_FS_DEFAULT_FLOW_TAG; |
| 322 | *action = 0; |
| 323 | |
| 324 | tcf_exts_to_list(exts, &actions); |
| 325 | list_for_each_entry(a, &actions, list) { |
| 326 | /* Only support a single action per rule */ |
| 327 | if (*action) |
| 328 | return -EINVAL; |
| 329 | |
| 330 | if (is_tcf_gact_shot(a)) { |
| 331 | *action |= MLX5_FLOW_CONTEXT_ACTION_DROP; |
| 332 | if (MLX5_CAP_FLOWTABLE(priv->mdev, |
| 333 | flow_table_properties_nic_receive.flow_counter)) |
| 334 | *action |= MLX5_FLOW_CONTEXT_ACTION_COUNT; |
| 335 | continue; |
| 336 | } |
| 337 | |
| 338 | if (is_tcf_skbedit_mark(a)) { |
| 339 | u32 mark = tcf_skbedit_mark(a); |
| 340 | |
| 341 | if (mark & ~MLX5E_TC_FLOW_ID_MASK) { |
| 342 | netdev_warn(priv->netdev, "Bad flow mark - only 16 bit is supported: 0x%x\n", |
| 343 | mark); |
| 344 | return -EINVAL; |
| 345 | } |
| 346 | |
| 347 | *flow_tag = mark; |
| 348 | *action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; |
| 349 | continue; |
| 350 | } |
| 351 | |
| 352 | return -EINVAL; |
| 353 | } |
| 354 | |
| 355 | return 0; |
| 356 | } |
| 357 | |
| 358 | static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts, |
| 359 | struct mlx5_esw_flow_attr *attr) |
| 360 | { |
| 361 | const struct tc_action *a; |
| 362 | LIST_HEAD(actions); |
| 363 | |
| 364 | if (tc_no_actions(exts)) |
| 365 | return -EINVAL; |
| 366 | |
| 367 | memset(attr, 0, sizeof(*attr)); |
| 368 | attr->in_rep = priv->ppriv; |
| 369 | |
| 370 | tcf_exts_to_list(exts, &actions); |
| 371 | list_for_each_entry(a, &actions, list) { |
| 372 | /* Only support a single action per rule */ |
| 373 | if (attr->action) |
| 374 | return -EINVAL; |
| 375 | |
| 376 | if (is_tcf_gact_shot(a)) { |
| 377 | attr->action = MLX5_FLOW_CONTEXT_ACTION_DROP | |
| 378 | MLX5_FLOW_CONTEXT_ACTION_COUNT; |
| 379 | continue; |
| 380 | } |
| 381 | |
| 382 | if (is_tcf_mirred_redirect(a)) { |
| 383 | int ifindex = tcf_mirred_ifindex(a); |
| 384 | struct net_device *out_dev; |
| 385 | struct mlx5e_priv *out_priv; |
| 386 | |
| 387 | out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex); |
| 388 | |
| 389 | if (!switchdev_port_same_parent_id(priv->netdev, out_dev)) { |
| 390 | pr_err("devices %s %s not on same switch HW, can't offload forwarding\n", |
| 391 | priv->netdev->name, out_dev->name); |
| 392 | return -EINVAL; |
| 393 | } |
| 394 | |
| 395 | attr->action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; |
| 396 | out_priv = netdev_priv(out_dev); |
| 397 | attr->out_rep = out_priv->ppriv; |
| 398 | continue; |
| 399 | } |
| 400 | |
| 401 | return -EINVAL; |
| 402 | } |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | int mlx5e_configure_flower(struct mlx5e_priv *priv, __be16 protocol, |
| 407 | struct tc_cls_flower_offload *f) |
| 408 | { |
| 409 | struct mlx5e_tc_table *tc = &priv->fs.tc; |
| 410 | int err = 0; |
| 411 | bool fdb_flow = false; |
| 412 | u32 flow_tag, action; |
| 413 | struct mlx5e_tc_flow *flow; |
| 414 | struct mlx5_flow_spec *spec; |
| 415 | struct mlx5_flow_rule *old = NULL; |
| 416 | struct mlx5_eswitch *esw = priv->mdev->priv.eswitch; |
| 417 | |
| 418 | if (esw && esw->mode == SRIOV_OFFLOADS) |
| 419 | fdb_flow = true; |
| 420 | |
| 421 | flow = rhashtable_lookup_fast(&tc->ht, &f->cookie, |
| 422 | tc->ht_params); |
| 423 | if (flow) { |
| 424 | old = flow->rule; |
| 425 | } else { |
| 426 | if (fdb_flow) |
| 427 | flow = kzalloc(sizeof(*flow) + sizeof(struct mlx5_esw_flow_attr), |
| 428 | GFP_KERNEL); |
| 429 | else |
| 430 | flow = kzalloc(sizeof(*flow), GFP_KERNEL); |
| 431 | } |
| 432 | |
| 433 | spec = mlx5_vzalloc(sizeof(*spec)); |
| 434 | if (!spec || !flow) { |
| 435 | err = -ENOMEM; |
| 436 | goto err_free; |
| 437 | } |
| 438 | |
| 439 | flow->cookie = f->cookie; |
| 440 | |
| 441 | err = parse_cls_flower(priv, spec, f); |
| 442 | if (err < 0) |
| 443 | goto err_free; |
| 444 | |
| 445 | if (fdb_flow) { |
| 446 | flow->attr = (struct mlx5_esw_flow_attr *)(flow + 1); |
| 447 | err = parse_tc_fdb_actions(priv, f->exts, flow->attr); |
| 448 | if (err < 0) |
| 449 | goto err_free; |
| 450 | flow->rule = mlx5e_tc_add_fdb_flow(priv, spec, flow->attr); |
| 451 | } else { |
| 452 | err = parse_tc_nic_actions(priv, f->exts, &action, &flow_tag); |
| 453 | if (err < 0) |
| 454 | goto err_free; |
| 455 | flow->rule = mlx5e_tc_add_nic_flow(priv, spec, action, flow_tag); |
| 456 | } |
| 457 | |
| 458 | if (IS_ERR(flow->rule)) { |
| 459 | err = PTR_ERR(flow->rule); |
| 460 | goto err_free; |
| 461 | } |
| 462 | |
| 463 | err = rhashtable_insert_fast(&tc->ht, &flow->node, |
| 464 | tc->ht_params); |
| 465 | if (err) |
| 466 | goto err_del_rule; |
| 467 | |
| 468 | if (old) |
| 469 | mlx5e_tc_del_flow(priv, old); |
| 470 | |
| 471 | goto out; |
| 472 | |
| 473 | err_del_rule: |
| 474 | mlx5_del_flow_rule(flow->rule); |
| 475 | |
| 476 | err_free: |
| 477 | if (!old) |
| 478 | kfree(flow); |
| 479 | out: |
| 480 | kvfree(spec); |
| 481 | return err; |
| 482 | } |
| 483 | |
| 484 | int mlx5e_delete_flower(struct mlx5e_priv *priv, |
| 485 | struct tc_cls_flower_offload *f) |
| 486 | { |
| 487 | struct mlx5e_tc_flow *flow; |
| 488 | struct mlx5e_tc_table *tc = &priv->fs.tc; |
| 489 | |
| 490 | flow = rhashtable_lookup_fast(&tc->ht, &f->cookie, |
| 491 | tc->ht_params); |
| 492 | if (!flow) |
| 493 | return -EINVAL; |
| 494 | |
| 495 | rhashtable_remove_fast(&tc->ht, &flow->node, tc->ht_params); |
| 496 | |
| 497 | mlx5e_tc_del_flow(priv, flow->rule); |
| 498 | |
| 499 | kfree(flow); |
| 500 | |
| 501 | return 0; |
| 502 | } |
| 503 | |
| 504 | int mlx5e_stats_flower(struct mlx5e_priv *priv, |
| 505 | struct tc_cls_flower_offload *f) |
| 506 | { |
| 507 | struct mlx5e_tc_table *tc = &priv->fs.tc; |
| 508 | struct mlx5e_tc_flow *flow; |
| 509 | struct tc_action *a; |
| 510 | struct mlx5_fc *counter; |
| 511 | LIST_HEAD(actions); |
| 512 | u64 bytes; |
| 513 | u64 packets; |
| 514 | u64 lastuse; |
| 515 | |
| 516 | flow = rhashtable_lookup_fast(&tc->ht, &f->cookie, |
| 517 | tc->ht_params); |
| 518 | if (!flow) |
| 519 | return -EINVAL; |
| 520 | |
| 521 | counter = mlx5_flow_rule_counter(flow->rule); |
| 522 | if (!counter) |
| 523 | return 0; |
| 524 | |
| 525 | mlx5_fc_query_cached(counter, &bytes, &packets, &lastuse); |
| 526 | |
| 527 | tcf_exts_to_list(f->exts, &actions); |
| 528 | list_for_each_entry(a, &actions, list) |
| 529 | tcf_action_stats_update(a, bytes, packets, lastuse); |
| 530 | |
| 531 | return 0; |
| 532 | } |
| 533 | |
| 534 | static const struct rhashtable_params mlx5e_tc_flow_ht_params = { |
| 535 | .head_offset = offsetof(struct mlx5e_tc_flow, node), |
| 536 | .key_offset = offsetof(struct mlx5e_tc_flow, cookie), |
| 537 | .key_len = sizeof(((struct mlx5e_tc_flow *)0)->cookie), |
| 538 | .automatic_shrinking = true, |
| 539 | }; |
| 540 | |
| 541 | int mlx5e_tc_init(struct mlx5e_priv *priv) |
| 542 | { |
| 543 | struct mlx5e_tc_table *tc = &priv->fs.tc; |
| 544 | |
| 545 | tc->ht_params = mlx5e_tc_flow_ht_params; |
| 546 | return rhashtable_init(&tc->ht, &tc->ht_params); |
| 547 | } |
| 548 | |
| 549 | static void _mlx5e_tc_del_flow(void *ptr, void *arg) |
| 550 | { |
| 551 | struct mlx5e_tc_flow *flow = ptr; |
| 552 | struct mlx5e_priv *priv = arg; |
| 553 | |
| 554 | mlx5e_tc_del_flow(priv, flow->rule); |
| 555 | kfree(flow); |
| 556 | } |
| 557 | |
| 558 | void mlx5e_tc_cleanup(struct mlx5e_priv *priv) |
| 559 | { |
| 560 | struct mlx5e_tc_table *tc = &priv->fs.tc; |
| 561 | |
| 562 | rhashtable_free_and_destroy(&tc->ht, _mlx5e_tc_del_flow, priv); |
| 563 | |
| 564 | if (!IS_ERR_OR_NULL(tc->t)) { |
| 565 | mlx5_destroy_flow_table(tc->t); |
| 566 | tc->t = NULL; |
| 567 | } |
| 568 | } |