| 1 | // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 |
| 2 | /* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */ |
| 3 | |
| 4 | #include <linux/kernel.h> |
| 5 | #include <linux/slab.h> |
| 6 | #include <linux/errno.h> |
| 7 | #include <linux/list.h> |
| 8 | #include <linux/string.h> |
| 9 | #include <linux/rhashtable.h> |
| 10 | #include <linux/netdevice.h> |
| 11 | #include <net/net_namespace.h> |
| 12 | #include <net/tc_act/tc_vlan.h> |
| 13 | |
| 14 | #include "reg.h" |
| 15 | #include "core.h" |
| 16 | #include "resources.h" |
| 17 | #include "spectrum.h" |
| 18 | #include "core_acl_flex_keys.h" |
| 19 | #include "core_acl_flex_actions.h" |
| 20 | #include "spectrum_acl_tcam.h" |
| 21 | |
| 22 | struct mlxsw_sp_acl { |
| 23 | struct mlxsw_sp *mlxsw_sp; |
| 24 | struct mlxsw_afk *afk; |
| 25 | struct mlxsw_sp_fid *dummy_fid; |
| 26 | struct rhashtable ruleset_ht; |
| 27 | struct list_head rules; |
| 28 | struct { |
| 29 | struct delayed_work dw; |
| 30 | unsigned long interval; /* ms */ |
| 31 | #define MLXSW_SP_ACL_RULE_ACTIVITY_UPDATE_PERIOD_MS 1000 |
| 32 | } rule_activity_update; |
| 33 | struct mlxsw_sp_acl_tcam tcam; |
| 34 | }; |
| 35 | |
| 36 | struct mlxsw_afk *mlxsw_sp_acl_afk(struct mlxsw_sp_acl *acl) |
| 37 | { |
| 38 | return acl->afk; |
| 39 | } |
| 40 | |
| 41 | struct mlxsw_sp_acl_block_binding { |
| 42 | struct list_head list; |
| 43 | struct net_device *dev; |
| 44 | struct mlxsw_sp_port *mlxsw_sp_port; |
| 45 | bool ingress; |
| 46 | }; |
| 47 | |
| 48 | struct mlxsw_sp_acl_block { |
| 49 | struct list_head binding_list; |
| 50 | struct mlxsw_sp_acl_ruleset *ruleset_zero; |
| 51 | struct mlxsw_sp *mlxsw_sp; |
| 52 | unsigned int rule_count; |
| 53 | unsigned int disable_count; |
| 54 | }; |
| 55 | |
| 56 | struct mlxsw_sp_acl_ruleset_ht_key { |
| 57 | struct mlxsw_sp_acl_block *block; |
| 58 | u32 chain_index; |
| 59 | const struct mlxsw_sp_acl_profile_ops *ops; |
| 60 | }; |
| 61 | |
| 62 | struct mlxsw_sp_acl_ruleset { |
| 63 | struct rhash_head ht_node; /* Member of acl HT */ |
| 64 | struct mlxsw_sp_acl_ruleset_ht_key ht_key; |
| 65 | struct rhashtable rule_ht; |
| 66 | unsigned int ref_count; |
| 67 | unsigned long priv[0]; |
| 68 | /* priv has to be always the last item */ |
| 69 | }; |
| 70 | |
| 71 | struct mlxsw_sp_acl_rule { |
| 72 | struct rhash_head ht_node; /* Member of rule HT */ |
| 73 | struct list_head list; |
| 74 | unsigned long cookie; /* HT key */ |
| 75 | struct mlxsw_sp_acl_ruleset *ruleset; |
| 76 | struct mlxsw_sp_acl_rule_info *rulei; |
| 77 | u64 last_used; |
| 78 | u64 last_packets; |
| 79 | u64 last_bytes; |
| 80 | unsigned long priv[0]; |
| 81 | /* priv has to be always the last item */ |
| 82 | }; |
| 83 | |
| 84 | static const struct rhashtable_params mlxsw_sp_acl_ruleset_ht_params = { |
| 85 | .key_len = sizeof(struct mlxsw_sp_acl_ruleset_ht_key), |
| 86 | .key_offset = offsetof(struct mlxsw_sp_acl_ruleset, ht_key), |
| 87 | .head_offset = offsetof(struct mlxsw_sp_acl_ruleset, ht_node), |
| 88 | .automatic_shrinking = true, |
| 89 | }; |
| 90 | |
| 91 | static const struct rhashtable_params mlxsw_sp_acl_rule_ht_params = { |
| 92 | .key_len = sizeof(unsigned long), |
| 93 | .key_offset = offsetof(struct mlxsw_sp_acl_rule, cookie), |
| 94 | .head_offset = offsetof(struct mlxsw_sp_acl_rule, ht_node), |
| 95 | .automatic_shrinking = true, |
| 96 | }; |
| 97 | |
| 98 | struct mlxsw_sp_fid *mlxsw_sp_acl_dummy_fid(struct mlxsw_sp *mlxsw_sp) |
| 99 | { |
| 100 | return mlxsw_sp->acl->dummy_fid; |
| 101 | } |
| 102 | |
| 103 | struct mlxsw_sp *mlxsw_sp_acl_block_mlxsw_sp(struct mlxsw_sp_acl_block *block) |
| 104 | { |
| 105 | return block->mlxsw_sp; |
| 106 | } |
| 107 | |
| 108 | unsigned int mlxsw_sp_acl_block_rule_count(struct mlxsw_sp_acl_block *block) |
| 109 | { |
| 110 | return block ? block->rule_count : 0; |
| 111 | } |
| 112 | |
| 113 | void mlxsw_sp_acl_block_disable_inc(struct mlxsw_sp_acl_block *block) |
| 114 | { |
| 115 | if (block) |
| 116 | block->disable_count++; |
| 117 | } |
| 118 | |
| 119 | void mlxsw_sp_acl_block_disable_dec(struct mlxsw_sp_acl_block *block) |
| 120 | { |
| 121 | if (block) |
| 122 | block->disable_count--; |
| 123 | } |
| 124 | |
| 125 | bool mlxsw_sp_acl_block_disabled(struct mlxsw_sp_acl_block *block) |
| 126 | { |
| 127 | return block->disable_count; |
| 128 | } |
| 129 | |
| 130 | bool mlxsw_sp_acl_block_is_egress_bound(struct mlxsw_sp_acl_block *block) |
| 131 | { |
| 132 | struct mlxsw_sp_acl_block_binding *binding; |
| 133 | |
| 134 | list_for_each_entry(binding, &block->binding_list, list) { |
| 135 | if (!binding->ingress) |
| 136 | return true; |
| 137 | } |
| 138 | return false; |
| 139 | } |
| 140 | |
| 141 | static bool |
| 142 | mlxsw_sp_acl_ruleset_is_singular(const struct mlxsw_sp_acl_ruleset *ruleset) |
| 143 | { |
| 144 | /* We hold a reference on ruleset ourselves */ |
| 145 | return ruleset->ref_count == 2; |
| 146 | } |
| 147 | |
| 148 | static int |
| 149 | mlxsw_sp_acl_ruleset_bind(struct mlxsw_sp *mlxsw_sp, |
| 150 | struct mlxsw_sp_acl_block *block, |
| 151 | struct mlxsw_sp_acl_block_binding *binding) |
| 152 | { |
| 153 | struct mlxsw_sp_acl_ruleset *ruleset = block->ruleset_zero; |
| 154 | const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops; |
| 155 | |
| 156 | return ops->ruleset_bind(mlxsw_sp, ruleset->priv, |
| 157 | binding->mlxsw_sp_port, binding->ingress); |
| 158 | } |
| 159 | |
| 160 | static void |
| 161 | mlxsw_sp_acl_ruleset_unbind(struct mlxsw_sp *mlxsw_sp, |
| 162 | struct mlxsw_sp_acl_block *block, |
| 163 | struct mlxsw_sp_acl_block_binding *binding) |
| 164 | { |
| 165 | struct mlxsw_sp_acl_ruleset *ruleset = block->ruleset_zero; |
| 166 | const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops; |
| 167 | |
| 168 | ops->ruleset_unbind(mlxsw_sp, ruleset->priv, |
| 169 | binding->mlxsw_sp_port, binding->ingress); |
| 170 | } |
| 171 | |
| 172 | static bool mlxsw_sp_acl_ruleset_block_bound(struct mlxsw_sp_acl_block *block) |
| 173 | { |
| 174 | return block->ruleset_zero; |
| 175 | } |
| 176 | |
| 177 | static int |
| 178 | mlxsw_sp_acl_ruleset_block_bind(struct mlxsw_sp *mlxsw_sp, |
| 179 | struct mlxsw_sp_acl_ruleset *ruleset, |
| 180 | struct mlxsw_sp_acl_block *block) |
| 181 | { |
| 182 | struct mlxsw_sp_acl_block_binding *binding; |
| 183 | int err; |
| 184 | |
| 185 | block->ruleset_zero = ruleset; |
| 186 | list_for_each_entry(binding, &block->binding_list, list) { |
| 187 | err = mlxsw_sp_acl_ruleset_bind(mlxsw_sp, block, binding); |
| 188 | if (err) |
| 189 | goto rollback; |
| 190 | } |
| 191 | return 0; |
| 192 | |
| 193 | rollback: |
| 194 | list_for_each_entry_continue_reverse(binding, &block->binding_list, |
| 195 | list) |
| 196 | mlxsw_sp_acl_ruleset_unbind(mlxsw_sp, block, binding); |
| 197 | block->ruleset_zero = NULL; |
| 198 | |
| 199 | return err; |
| 200 | } |
| 201 | |
| 202 | static void |
| 203 | mlxsw_sp_acl_ruleset_block_unbind(struct mlxsw_sp *mlxsw_sp, |
| 204 | struct mlxsw_sp_acl_ruleset *ruleset, |
| 205 | struct mlxsw_sp_acl_block *block) |
| 206 | { |
| 207 | struct mlxsw_sp_acl_block_binding *binding; |
| 208 | |
| 209 | list_for_each_entry(binding, &block->binding_list, list) |
| 210 | mlxsw_sp_acl_ruleset_unbind(mlxsw_sp, block, binding); |
| 211 | block->ruleset_zero = NULL; |
| 212 | } |
| 213 | |
| 214 | struct mlxsw_sp_acl_block *mlxsw_sp_acl_block_create(struct mlxsw_sp *mlxsw_sp, |
| 215 | struct net *net) |
| 216 | { |
| 217 | struct mlxsw_sp_acl_block *block; |
| 218 | |
| 219 | block = kzalloc(sizeof(*block), GFP_KERNEL); |
| 220 | if (!block) |
| 221 | return NULL; |
| 222 | INIT_LIST_HEAD(&block->binding_list); |
| 223 | block->mlxsw_sp = mlxsw_sp; |
| 224 | return block; |
| 225 | } |
| 226 | |
| 227 | void mlxsw_sp_acl_block_destroy(struct mlxsw_sp_acl_block *block) |
| 228 | { |
| 229 | WARN_ON(!list_empty(&block->binding_list)); |
| 230 | kfree(block); |
| 231 | } |
| 232 | |
| 233 | static struct mlxsw_sp_acl_block_binding * |
| 234 | mlxsw_sp_acl_block_lookup(struct mlxsw_sp_acl_block *block, |
| 235 | struct mlxsw_sp_port *mlxsw_sp_port, bool ingress) |
| 236 | { |
| 237 | struct mlxsw_sp_acl_block_binding *binding; |
| 238 | |
| 239 | list_for_each_entry(binding, &block->binding_list, list) |
| 240 | if (binding->mlxsw_sp_port == mlxsw_sp_port && |
| 241 | binding->ingress == ingress) |
| 242 | return binding; |
| 243 | return NULL; |
| 244 | } |
| 245 | |
| 246 | int mlxsw_sp_acl_block_bind(struct mlxsw_sp *mlxsw_sp, |
| 247 | struct mlxsw_sp_acl_block *block, |
| 248 | struct mlxsw_sp_port *mlxsw_sp_port, |
| 249 | bool ingress) |
| 250 | { |
| 251 | struct mlxsw_sp_acl_block_binding *binding; |
| 252 | int err; |
| 253 | |
| 254 | if (WARN_ON(mlxsw_sp_acl_block_lookup(block, mlxsw_sp_port, ingress))) |
| 255 | return -EEXIST; |
| 256 | |
| 257 | binding = kzalloc(sizeof(*binding), GFP_KERNEL); |
| 258 | if (!binding) |
| 259 | return -ENOMEM; |
| 260 | binding->mlxsw_sp_port = mlxsw_sp_port; |
| 261 | binding->ingress = ingress; |
| 262 | |
| 263 | if (mlxsw_sp_acl_ruleset_block_bound(block)) { |
| 264 | err = mlxsw_sp_acl_ruleset_bind(mlxsw_sp, block, binding); |
| 265 | if (err) |
| 266 | goto err_ruleset_bind; |
| 267 | } |
| 268 | |
| 269 | list_add(&binding->list, &block->binding_list); |
| 270 | return 0; |
| 271 | |
| 272 | err_ruleset_bind: |
| 273 | kfree(binding); |
| 274 | return err; |
| 275 | } |
| 276 | |
| 277 | int mlxsw_sp_acl_block_unbind(struct mlxsw_sp *mlxsw_sp, |
| 278 | struct mlxsw_sp_acl_block *block, |
| 279 | struct mlxsw_sp_port *mlxsw_sp_port, |
| 280 | bool ingress) |
| 281 | { |
| 282 | struct mlxsw_sp_acl_block_binding *binding; |
| 283 | |
| 284 | binding = mlxsw_sp_acl_block_lookup(block, mlxsw_sp_port, ingress); |
| 285 | if (!binding) |
| 286 | return -ENOENT; |
| 287 | |
| 288 | list_del(&binding->list); |
| 289 | |
| 290 | if (mlxsw_sp_acl_ruleset_block_bound(block)) |
| 291 | mlxsw_sp_acl_ruleset_unbind(mlxsw_sp, block, binding); |
| 292 | |
| 293 | kfree(binding); |
| 294 | return 0; |
| 295 | } |
| 296 | |
| 297 | static struct mlxsw_sp_acl_ruleset * |
| 298 | mlxsw_sp_acl_ruleset_create(struct mlxsw_sp *mlxsw_sp, |
| 299 | struct mlxsw_sp_acl_block *block, u32 chain_index, |
| 300 | const struct mlxsw_sp_acl_profile_ops *ops, |
| 301 | struct mlxsw_afk_element_usage *tmplt_elusage) |
| 302 | { |
| 303 | struct mlxsw_sp_acl *acl = mlxsw_sp->acl; |
| 304 | struct mlxsw_sp_acl_ruleset *ruleset; |
| 305 | size_t alloc_size; |
| 306 | int err; |
| 307 | |
| 308 | alloc_size = sizeof(*ruleset) + ops->ruleset_priv_size; |
| 309 | ruleset = kzalloc(alloc_size, GFP_KERNEL); |
| 310 | if (!ruleset) |
| 311 | return ERR_PTR(-ENOMEM); |
| 312 | ruleset->ref_count = 1; |
| 313 | ruleset->ht_key.block = block; |
| 314 | ruleset->ht_key.chain_index = chain_index; |
| 315 | ruleset->ht_key.ops = ops; |
| 316 | |
| 317 | err = rhashtable_init(&ruleset->rule_ht, &mlxsw_sp_acl_rule_ht_params); |
| 318 | if (err) |
| 319 | goto err_rhashtable_init; |
| 320 | |
| 321 | err = ops->ruleset_add(mlxsw_sp, &acl->tcam, ruleset->priv, |
| 322 | tmplt_elusage); |
| 323 | if (err) |
| 324 | goto err_ops_ruleset_add; |
| 325 | |
| 326 | err = rhashtable_insert_fast(&acl->ruleset_ht, &ruleset->ht_node, |
| 327 | mlxsw_sp_acl_ruleset_ht_params); |
| 328 | if (err) |
| 329 | goto err_ht_insert; |
| 330 | |
| 331 | return ruleset; |
| 332 | |
| 333 | err_ht_insert: |
| 334 | ops->ruleset_del(mlxsw_sp, ruleset->priv); |
| 335 | err_ops_ruleset_add: |
| 336 | rhashtable_destroy(&ruleset->rule_ht); |
| 337 | err_rhashtable_init: |
| 338 | kfree(ruleset); |
| 339 | return ERR_PTR(err); |
| 340 | } |
| 341 | |
| 342 | static void mlxsw_sp_acl_ruleset_destroy(struct mlxsw_sp *mlxsw_sp, |
| 343 | struct mlxsw_sp_acl_ruleset *ruleset) |
| 344 | { |
| 345 | const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops; |
| 346 | struct mlxsw_sp_acl *acl = mlxsw_sp->acl; |
| 347 | |
| 348 | rhashtable_remove_fast(&acl->ruleset_ht, &ruleset->ht_node, |
| 349 | mlxsw_sp_acl_ruleset_ht_params); |
| 350 | ops->ruleset_del(mlxsw_sp, ruleset->priv); |
| 351 | rhashtable_destroy(&ruleset->rule_ht); |
| 352 | kfree(ruleset); |
| 353 | } |
| 354 | |
| 355 | static void mlxsw_sp_acl_ruleset_ref_inc(struct mlxsw_sp_acl_ruleset *ruleset) |
| 356 | { |
| 357 | ruleset->ref_count++; |
| 358 | } |
| 359 | |
| 360 | static void mlxsw_sp_acl_ruleset_ref_dec(struct mlxsw_sp *mlxsw_sp, |
| 361 | struct mlxsw_sp_acl_ruleset *ruleset) |
| 362 | { |
| 363 | if (--ruleset->ref_count) |
| 364 | return; |
| 365 | mlxsw_sp_acl_ruleset_destroy(mlxsw_sp, ruleset); |
| 366 | } |
| 367 | |
| 368 | static struct mlxsw_sp_acl_ruleset * |
| 369 | __mlxsw_sp_acl_ruleset_lookup(struct mlxsw_sp_acl *acl, |
| 370 | struct mlxsw_sp_acl_block *block, u32 chain_index, |
| 371 | const struct mlxsw_sp_acl_profile_ops *ops) |
| 372 | { |
| 373 | struct mlxsw_sp_acl_ruleset_ht_key ht_key; |
| 374 | |
| 375 | memset(&ht_key, 0, sizeof(ht_key)); |
| 376 | ht_key.block = block; |
| 377 | ht_key.chain_index = chain_index; |
| 378 | ht_key.ops = ops; |
| 379 | return rhashtable_lookup_fast(&acl->ruleset_ht, &ht_key, |
| 380 | mlxsw_sp_acl_ruleset_ht_params); |
| 381 | } |
| 382 | |
| 383 | struct mlxsw_sp_acl_ruleset * |
| 384 | mlxsw_sp_acl_ruleset_lookup(struct mlxsw_sp *mlxsw_sp, |
| 385 | struct mlxsw_sp_acl_block *block, u32 chain_index, |
| 386 | enum mlxsw_sp_acl_profile profile) |
| 387 | { |
| 388 | const struct mlxsw_sp_acl_profile_ops *ops; |
| 389 | struct mlxsw_sp_acl *acl = mlxsw_sp->acl; |
| 390 | struct mlxsw_sp_acl_ruleset *ruleset; |
| 391 | |
| 392 | ops = mlxsw_sp_acl_tcam_profile_ops(mlxsw_sp, profile); |
| 393 | if (!ops) |
| 394 | return ERR_PTR(-EINVAL); |
| 395 | ruleset = __mlxsw_sp_acl_ruleset_lookup(acl, block, chain_index, ops); |
| 396 | if (!ruleset) |
| 397 | return ERR_PTR(-ENOENT); |
| 398 | return ruleset; |
| 399 | } |
| 400 | |
| 401 | struct mlxsw_sp_acl_ruleset * |
| 402 | mlxsw_sp_acl_ruleset_get(struct mlxsw_sp *mlxsw_sp, |
| 403 | struct mlxsw_sp_acl_block *block, u32 chain_index, |
| 404 | enum mlxsw_sp_acl_profile profile, |
| 405 | struct mlxsw_afk_element_usage *tmplt_elusage) |
| 406 | { |
| 407 | const struct mlxsw_sp_acl_profile_ops *ops; |
| 408 | struct mlxsw_sp_acl *acl = mlxsw_sp->acl; |
| 409 | struct mlxsw_sp_acl_ruleset *ruleset; |
| 410 | |
| 411 | ops = mlxsw_sp_acl_tcam_profile_ops(mlxsw_sp, profile); |
| 412 | if (!ops) |
| 413 | return ERR_PTR(-EINVAL); |
| 414 | |
| 415 | ruleset = __mlxsw_sp_acl_ruleset_lookup(acl, block, chain_index, ops); |
| 416 | if (ruleset) { |
| 417 | mlxsw_sp_acl_ruleset_ref_inc(ruleset); |
| 418 | return ruleset; |
| 419 | } |
| 420 | return mlxsw_sp_acl_ruleset_create(mlxsw_sp, block, chain_index, ops, |
| 421 | tmplt_elusage); |
| 422 | } |
| 423 | |
| 424 | void mlxsw_sp_acl_ruleset_put(struct mlxsw_sp *mlxsw_sp, |
| 425 | struct mlxsw_sp_acl_ruleset *ruleset) |
| 426 | { |
| 427 | mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset); |
| 428 | } |
| 429 | |
| 430 | u16 mlxsw_sp_acl_ruleset_group_id(struct mlxsw_sp_acl_ruleset *ruleset) |
| 431 | { |
| 432 | const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops; |
| 433 | |
| 434 | return ops->ruleset_group_id(ruleset->priv); |
| 435 | } |
| 436 | |
| 437 | struct mlxsw_sp_acl_rule_info * |
| 438 | mlxsw_sp_acl_rulei_create(struct mlxsw_sp_acl *acl, |
| 439 | struct mlxsw_afa_block *afa_block) |
| 440 | { |
| 441 | struct mlxsw_sp_acl_rule_info *rulei; |
| 442 | int err; |
| 443 | |
| 444 | rulei = kzalloc(sizeof(*rulei), GFP_KERNEL); |
| 445 | if (!rulei) |
| 446 | return NULL; |
| 447 | |
| 448 | if (afa_block) { |
| 449 | rulei->act_block = afa_block; |
| 450 | return rulei; |
| 451 | } |
| 452 | |
| 453 | rulei->act_block = mlxsw_afa_block_create(acl->mlxsw_sp->afa); |
| 454 | if (IS_ERR(rulei->act_block)) { |
| 455 | err = PTR_ERR(rulei->act_block); |
| 456 | goto err_afa_block_create; |
| 457 | } |
| 458 | rulei->action_created = 1; |
| 459 | return rulei; |
| 460 | |
| 461 | err_afa_block_create: |
| 462 | kfree(rulei); |
| 463 | return ERR_PTR(err); |
| 464 | } |
| 465 | |
| 466 | void mlxsw_sp_acl_rulei_destroy(struct mlxsw_sp_acl_rule_info *rulei) |
| 467 | { |
| 468 | if (rulei->action_created) |
| 469 | mlxsw_afa_block_destroy(rulei->act_block); |
| 470 | kfree(rulei); |
| 471 | } |
| 472 | |
| 473 | int mlxsw_sp_acl_rulei_commit(struct mlxsw_sp_acl_rule_info *rulei) |
| 474 | { |
| 475 | return mlxsw_afa_block_commit(rulei->act_block); |
| 476 | } |
| 477 | |
| 478 | void mlxsw_sp_acl_rulei_priority(struct mlxsw_sp_acl_rule_info *rulei, |
| 479 | unsigned int priority) |
| 480 | { |
| 481 | rulei->priority = priority >> 16; |
| 482 | } |
| 483 | |
| 484 | void mlxsw_sp_acl_rulei_keymask_u32(struct mlxsw_sp_acl_rule_info *rulei, |
| 485 | enum mlxsw_afk_element element, |
| 486 | u32 key_value, u32 mask_value) |
| 487 | { |
| 488 | mlxsw_afk_values_add_u32(&rulei->values, element, |
| 489 | key_value, mask_value); |
| 490 | } |
| 491 | |
| 492 | void mlxsw_sp_acl_rulei_keymask_buf(struct mlxsw_sp_acl_rule_info *rulei, |
| 493 | enum mlxsw_afk_element element, |
| 494 | const char *key_value, |
| 495 | const char *mask_value, unsigned int len) |
| 496 | { |
| 497 | mlxsw_afk_values_add_buf(&rulei->values, element, |
| 498 | key_value, mask_value, len); |
| 499 | } |
| 500 | |
| 501 | int mlxsw_sp_acl_rulei_act_continue(struct mlxsw_sp_acl_rule_info *rulei) |
| 502 | { |
| 503 | return mlxsw_afa_block_continue(rulei->act_block); |
| 504 | } |
| 505 | |
| 506 | int mlxsw_sp_acl_rulei_act_jump(struct mlxsw_sp_acl_rule_info *rulei, |
| 507 | u16 group_id) |
| 508 | { |
| 509 | return mlxsw_afa_block_jump(rulei->act_block, group_id); |
| 510 | } |
| 511 | |
| 512 | int mlxsw_sp_acl_rulei_act_terminate(struct mlxsw_sp_acl_rule_info *rulei) |
| 513 | { |
| 514 | return mlxsw_afa_block_terminate(rulei->act_block); |
| 515 | } |
| 516 | |
| 517 | int mlxsw_sp_acl_rulei_act_drop(struct mlxsw_sp_acl_rule_info *rulei) |
| 518 | { |
| 519 | return mlxsw_afa_block_append_drop(rulei->act_block); |
| 520 | } |
| 521 | |
| 522 | int mlxsw_sp_acl_rulei_act_trap(struct mlxsw_sp_acl_rule_info *rulei) |
| 523 | { |
| 524 | return mlxsw_afa_block_append_trap(rulei->act_block, |
| 525 | MLXSW_TRAP_ID_ACL0); |
| 526 | } |
| 527 | |
| 528 | int mlxsw_sp_acl_rulei_act_fwd(struct mlxsw_sp *mlxsw_sp, |
| 529 | struct mlxsw_sp_acl_rule_info *rulei, |
| 530 | struct net_device *out_dev, |
| 531 | struct netlink_ext_ack *extack) |
| 532 | { |
| 533 | struct mlxsw_sp_port *mlxsw_sp_port; |
| 534 | u8 local_port; |
| 535 | bool in_port; |
| 536 | |
| 537 | if (out_dev) { |
| 538 | if (!mlxsw_sp_port_dev_check(out_dev)) { |
| 539 | NL_SET_ERR_MSG_MOD(extack, "Invalid output device"); |
| 540 | return -EINVAL; |
| 541 | } |
| 542 | mlxsw_sp_port = netdev_priv(out_dev); |
| 543 | if (mlxsw_sp_port->mlxsw_sp != mlxsw_sp) { |
| 544 | NL_SET_ERR_MSG_MOD(extack, "Invalid output device"); |
| 545 | return -EINVAL; |
| 546 | } |
| 547 | local_port = mlxsw_sp_port->local_port; |
| 548 | in_port = false; |
| 549 | } else { |
| 550 | /* If out_dev is NULL, the caller wants to |
| 551 | * set forward to ingress port. |
| 552 | */ |
| 553 | local_port = 0; |
| 554 | in_port = true; |
| 555 | } |
| 556 | return mlxsw_afa_block_append_fwd(rulei->act_block, |
| 557 | local_port, in_port, extack); |
| 558 | } |
| 559 | |
| 560 | int mlxsw_sp_acl_rulei_act_mirror(struct mlxsw_sp *mlxsw_sp, |
| 561 | struct mlxsw_sp_acl_rule_info *rulei, |
| 562 | struct mlxsw_sp_acl_block *block, |
| 563 | struct net_device *out_dev, |
| 564 | struct netlink_ext_ack *extack) |
| 565 | { |
| 566 | struct mlxsw_sp_acl_block_binding *binding; |
| 567 | struct mlxsw_sp_port *in_port; |
| 568 | |
| 569 | if (!list_is_singular(&block->binding_list)) { |
| 570 | NL_SET_ERR_MSG_MOD(extack, "Only a single mirror source is allowed"); |
| 571 | return -EOPNOTSUPP; |
| 572 | } |
| 573 | binding = list_first_entry(&block->binding_list, |
| 574 | struct mlxsw_sp_acl_block_binding, list); |
| 575 | in_port = binding->mlxsw_sp_port; |
| 576 | |
| 577 | return mlxsw_afa_block_append_mirror(rulei->act_block, |
| 578 | in_port->local_port, |
| 579 | out_dev, |
| 580 | binding->ingress, |
| 581 | extack); |
| 582 | } |
| 583 | |
| 584 | int mlxsw_sp_acl_rulei_act_vlan(struct mlxsw_sp *mlxsw_sp, |
| 585 | struct mlxsw_sp_acl_rule_info *rulei, |
| 586 | u32 action, u16 vid, u16 proto, u8 prio, |
| 587 | struct netlink_ext_ack *extack) |
| 588 | { |
| 589 | u8 ethertype; |
| 590 | |
| 591 | if (action == FLOW_ACTION_VLAN_MANGLE) { |
| 592 | switch (proto) { |
| 593 | case ETH_P_8021Q: |
| 594 | ethertype = 0; |
| 595 | break; |
| 596 | case ETH_P_8021AD: |
| 597 | ethertype = 1; |
| 598 | break; |
| 599 | default: |
| 600 | NL_SET_ERR_MSG_MOD(extack, "Unsupported VLAN protocol"); |
| 601 | dev_err(mlxsw_sp->bus_info->dev, "Unsupported VLAN protocol %#04x\n", |
| 602 | proto); |
| 603 | return -EINVAL; |
| 604 | } |
| 605 | |
| 606 | return mlxsw_afa_block_append_vlan_modify(rulei->act_block, |
| 607 | vid, prio, ethertype, |
| 608 | extack); |
| 609 | } else { |
| 610 | NL_SET_ERR_MSG_MOD(extack, "Unsupported VLAN action"); |
| 611 | dev_err(mlxsw_sp->bus_info->dev, "Unsupported VLAN action\n"); |
| 612 | return -EINVAL; |
| 613 | } |
| 614 | } |
| 615 | |
| 616 | int mlxsw_sp_acl_rulei_act_count(struct mlxsw_sp *mlxsw_sp, |
| 617 | struct mlxsw_sp_acl_rule_info *rulei, |
| 618 | struct netlink_ext_ack *extack) |
| 619 | { |
| 620 | return mlxsw_afa_block_append_counter(rulei->act_block, |
| 621 | &rulei->counter_index, extack); |
| 622 | } |
| 623 | |
| 624 | int mlxsw_sp_acl_rulei_act_fid_set(struct mlxsw_sp *mlxsw_sp, |
| 625 | struct mlxsw_sp_acl_rule_info *rulei, |
| 626 | u16 fid, struct netlink_ext_ack *extack) |
| 627 | { |
| 628 | return mlxsw_afa_block_append_fid_set(rulei->act_block, fid, extack); |
| 629 | } |
| 630 | |
| 631 | struct mlxsw_sp_acl_rule * |
| 632 | mlxsw_sp_acl_rule_create(struct mlxsw_sp *mlxsw_sp, |
| 633 | struct mlxsw_sp_acl_ruleset *ruleset, |
| 634 | unsigned long cookie, |
| 635 | struct mlxsw_afa_block *afa_block, |
| 636 | struct netlink_ext_ack *extack) |
| 637 | { |
| 638 | const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops; |
| 639 | struct mlxsw_sp_acl_rule *rule; |
| 640 | int err; |
| 641 | |
| 642 | mlxsw_sp_acl_ruleset_ref_inc(ruleset); |
| 643 | rule = kzalloc(sizeof(*rule) + ops->rule_priv_size(mlxsw_sp), |
| 644 | GFP_KERNEL); |
| 645 | if (!rule) { |
| 646 | err = -ENOMEM; |
| 647 | goto err_alloc; |
| 648 | } |
| 649 | rule->cookie = cookie; |
| 650 | rule->ruleset = ruleset; |
| 651 | |
| 652 | rule->rulei = mlxsw_sp_acl_rulei_create(mlxsw_sp->acl, afa_block); |
| 653 | if (IS_ERR(rule->rulei)) { |
| 654 | err = PTR_ERR(rule->rulei); |
| 655 | goto err_rulei_create; |
| 656 | } |
| 657 | |
| 658 | return rule; |
| 659 | |
| 660 | err_rulei_create: |
| 661 | kfree(rule); |
| 662 | err_alloc: |
| 663 | mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset); |
| 664 | return ERR_PTR(err); |
| 665 | } |
| 666 | |
| 667 | void mlxsw_sp_acl_rule_destroy(struct mlxsw_sp *mlxsw_sp, |
| 668 | struct mlxsw_sp_acl_rule *rule) |
| 669 | { |
| 670 | struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset; |
| 671 | |
| 672 | mlxsw_sp_acl_rulei_destroy(rule->rulei); |
| 673 | kfree(rule); |
| 674 | mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset); |
| 675 | } |
| 676 | |
| 677 | int mlxsw_sp_acl_rule_add(struct mlxsw_sp *mlxsw_sp, |
| 678 | struct mlxsw_sp_acl_rule *rule) |
| 679 | { |
| 680 | struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset; |
| 681 | const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops; |
| 682 | int err; |
| 683 | |
| 684 | err = ops->rule_add(mlxsw_sp, ruleset->priv, rule->priv, rule->rulei); |
| 685 | if (err) |
| 686 | return err; |
| 687 | |
| 688 | err = rhashtable_insert_fast(&ruleset->rule_ht, &rule->ht_node, |
| 689 | mlxsw_sp_acl_rule_ht_params); |
| 690 | if (err) |
| 691 | goto err_rhashtable_insert; |
| 692 | |
| 693 | if (!ruleset->ht_key.chain_index && |
| 694 | mlxsw_sp_acl_ruleset_is_singular(ruleset)) { |
| 695 | /* We only need ruleset with chain index 0, the implicit |
| 696 | * one, to be directly bound to device. The rest of the |
| 697 | * rulesets are bound by "Goto action set". |
| 698 | */ |
| 699 | err = mlxsw_sp_acl_ruleset_block_bind(mlxsw_sp, ruleset, |
| 700 | ruleset->ht_key.block); |
| 701 | if (err) |
| 702 | goto err_ruleset_block_bind; |
| 703 | } |
| 704 | |
| 705 | list_add_tail(&rule->list, &mlxsw_sp->acl->rules); |
| 706 | ruleset->ht_key.block->rule_count++; |
| 707 | return 0; |
| 708 | |
| 709 | err_ruleset_block_bind: |
| 710 | rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node, |
| 711 | mlxsw_sp_acl_rule_ht_params); |
| 712 | err_rhashtable_insert: |
| 713 | ops->rule_del(mlxsw_sp, rule->priv); |
| 714 | return err; |
| 715 | } |
| 716 | |
| 717 | void mlxsw_sp_acl_rule_del(struct mlxsw_sp *mlxsw_sp, |
| 718 | struct mlxsw_sp_acl_rule *rule) |
| 719 | { |
| 720 | struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset; |
| 721 | const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops; |
| 722 | |
| 723 | ruleset->ht_key.block->rule_count--; |
| 724 | list_del(&rule->list); |
| 725 | if (!ruleset->ht_key.chain_index && |
| 726 | mlxsw_sp_acl_ruleset_is_singular(ruleset)) |
| 727 | mlxsw_sp_acl_ruleset_block_unbind(mlxsw_sp, ruleset, |
| 728 | ruleset->ht_key.block); |
| 729 | rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node, |
| 730 | mlxsw_sp_acl_rule_ht_params); |
| 731 | ops->rule_del(mlxsw_sp, rule->priv); |
| 732 | } |
| 733 | |
| 734 | int mlxsw_sp_acl_rule_action_replace(struct mlxsw_sp *mlxsw_sp, |
| 735 | struct mlxsw_sp_acl_rule *rule, |
| 736 | struct mlxsw_afa_block *afa_block) |
| 737 | { |
| 738 | struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset; |
| 739 | const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops; |
| 740 | struct mlxsw_sp_acl_rule_info *rulei; |
| 741 | |
| 742 | rulei = mlxsw_sp_acl_rule_rulei(rule); |
| 743 | rulei->act_block = afa_block; |
| 744 | |
| 745 | return ops->rule_action_replace(mlxsw_sp, rule->priv, rule->rulei); |
| 746 | } |
| 747 | |
| 748 | struct mlxsw_sp_acl_rule * |
| 749 | mlxsw_sp_acl_rule_lookup(struct mlxsw_sp *mlxsw_sp, |
| 750 | struct mlxsw_sp_acl_ruleset *ruleset, |
| 751 | unsigned long cookie) |
| 752 | { |
| 753 | return rhashtable_lookup_fast(&ruleset->rule_ht, &cookie, |
| 754 | mlxsw_sp_acl_rule_ht_params); |
| 755 | } |
| 756 | |
| 757 | struct mlxsw_sp_acl_rule_info * |
| 758 | mlxsw_sp_acl_rule_rulei(struct mlxsw_sp_acl_rule *rule) |
| 759 | { |
| 760 | return rule->rulei; |
| 761 | } |
| 762 | |
| 763 | static int mlxsw_sp_acl_rule_activity_update(struct mlxsw_sp *mlxsw_sp, |
| 764 | struct mlxsw_sp_acl_rule *rule) |
| 765 | { |
| 766 | struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset; |
| 767 | const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops; |
| 768 | bool active; |
| 769 | int err; |
| 770 | |
| 771 | err = ops->rule_activity_get(mlxsw_sp, rule->priv, &active); |
| 772 | if (err) |
| 773 | return err; |
| 774 | if (active) |
| 775 | rule->last_used = jiffies; |
| 776 | return 0; |
| 777 | } |
| 778 | |
| 779 | static int mlxsw_sp_acl_rules_activity_update(struct mlxsw_sp_acl *acl) |
| 780 | { |
| 781 | struct mlxsw_sp_acl_rule *rule; |
| 782 | int err; |
| 783 | |
| 784 | /* Protect internal structures from changes */ |
| 785 | rtnl_lock(); |
| 786 | list_for_each_entry(rule, &acl->rules, list) { |
| 787 | err = mlxsw_sp_acl_rule_activity_update(acl->mlxsw_sp, |
| 788 | rule); |
| 789 | if (err) |
| 790 | goto err_rule_update; |
| 791 | } |
| 792 | rtnl_unlock(); |
| 793 | return 0; |
| 794 | |
| 795 | err_rule_update: |
| 796 | rtnl_unlock(); |
| 797 | return err; |
| 798 | } |
| 799 | |
| 800 | static void mlxsw_sp_acl_rule_activity_work_schedule(struct mlxsw_sp_acl *acl) |
| 801 | { |
| 802 | unsigned long interval = acl->rule_activity_update.interval; |
| 803 | |
| 804 | mlxsw_core_schedule_dw(&acl->rule_activity_update.dw, |
| 805 | msecs_to_jiffies(interval)); |
| 806 | } |
| 807 | |
| 808 | static void mlxsw_sp_acl_rule_activity_update_work(struct work_struct *work) |
| 809 | { |
| 810 | struct mlxsw_sp_acl *acl = container_of(work, struct mlxsw_sp_acl, |
| 811 | rule_activity_update.dw.work); |
| 812 | int err; |
| 813 | |
| 814 | err = mlxsw_sp_acl_rules_activity_update(acl); |
| 815 | if (err) |
| 816 | dev_err(acl->mlxsw_sp->bus_info->dev, "Could not update acl activity"); |
| 817 | |
| 818 | mlxsw_sp_acl_rule_activity_work_schedule(acl); |
| 819 | } |
| 820 | |
| 821 | int mlxsw_sp_acl_rule_get_stats(struct mlxsw_sp *mlxsw_sp, |
| 822 | struct mlxsw_sp_acl_rule *rule, |
| 823 | u64 *packets, u64 *bytes, u64 *last_use) |
| 824 | |
| 825 | { |
| 826 | struct mlxsw_sp_acl_rule_info *rulei; |
| 827 | u64 current_packets; |
| 828 | u64 current_bytes; |
| 829 | int err; |
| 830 | |
| 831 | rulei = mlxsw_sp_acl_rule_rulei(rule); |
| 832 | err = mlxsw_sp_flow_counter_get(mlxsw_sp, rulei->counter_index, |
| 833 | ¤t_packets, ¤t_bytes); |
| 834 | if (err) |
| 835 | return err; |
| 836 | |
| 837 | *packets = current_packets - rule->last_packets; |
| 838 | *bytes = current_bytes - rule->last_bytes; |
| 839 | *last_use = rule->last_used; |
| 840 | |
| 841 | rule->last_bytes = current_bytes; |
| 842 | rule->last_packets = current_packets; |
| 843 | |
| 844 | return 0; |
| 845 | } |
| 846 | |
| 847 | int mlxsw_sp_acl_init(struct mlxsw_sp *mlxsw_sp) |
| 848 | { |
| 849 | struct mlxsw_sp_fid *fid; |
| 850 | struct mlxsw_sp_acl *acl; |
| 851 | size_t alloc_size; |
| 852 | int err; |
| 853 | |
| 854 | alloc_size = sizeof(*acl) + mlxsw_sp_acl_tcam_priv_size(mlxsw_sp); |
| 855 | acl = kzalloc(alloc_size, GFP_KERNEL); |
| 856 | if (!acl) |
| 857 | return -ENOMEM; |
| 858 | mlxsw_sp->acl = acl; |
| 859 | acl->mlxsw_sp = mlxsw_sp; |
| 860 | acl->afk = mlxsw_afk_create(MLXSW_CORE_RES_GET(mlxsw_sp->core, |
| 861 | ACL_FLEX_KEYS), |
| 862 | mlxsw_sp->afk_ops); |
| 863 | if (!acl->afk) { |
| 864 | err = -ENOMEM; |
| 865 | goto err_afk_create; |
| 866 | } |
| 867 | |
| 868 | err = rhashtable_init(&acl->ruleset_ht, |
| 869 | &mlxsw_sp_acl_ruleset_ht_params); |
| 870 | if (err) |
| 871 | goto err_rhashtable_init; |
| 872 | |
| 873 | fid = mlxsw_sp_fid_dummy_get(mlxsw_sp); |
| 874 | if (IS_ERR(fid)) { |
| 875 | err = PTR_ERR(fid); |
| 876 | goto err_fid_get; |
| 877 | } |
| 878 | acl->dummy_fid = fid; |
| 879 | |
| 880 | INIT_LIST_HEAD(&acl->rules); |
| 881 | err = mlxsw_sp_acl_tcam_init(mlxsw_sp, &acl->tcam); |
| 882 | if (err) |
| 883 | goto err_acl_ops_init; |
| 884 | |
| 885 | /* Create the delayed work for the rule activity_update */ |
| 886 | INIT_DELAYED_WORK(&acl->rule_activity_update.dw, |
| 887 | mlxsw_sp_acl_rule_activity_update_work); |
| 888 | acl->rule_activity_update.interval = MLXSW_SP_ACL_RULE_ACTIVITY_UPDATE_PERIOD_MS; |
| 889 | mlxsw_core_schedule_dw(&acl->rule_activity_update.dw, 0); |
| 890 | return 0; |
| 891 | |
| 892 | err_acl_ops_init: |
| 893 | mlxsw_sp_fid_put(fid); |
| 894 | err_fid_get: |
| 895 | rhashtable_destroy(&acl->ruleset_ht); |
| 896 | err_rhashtable_init: |
| 897 | mlxsw_afk_destroy(acl->afk); |
| 898 | err_afk_create: |
| 899 | kfree(acl); |
| 900 | return err; |
| 901 | } |
| 902 | |
| 903 | void mlxsw_sp_acl_fini(struct mlxsw_sp *mlxsw_sp) |
| 904 | { |
| 905 | struct mlxsw_sp_acl *acl = mlxsw_sp->acl; |
| 906 | |
| 907 | cancel_delayed_work_sync(&mlxsw_sp->acl->rule_activity_update.dw); |
| 908 | mlxsw_sp_acl_tcam_fini(mlxsw_sp, &acl->tcam); |
| 909 | WARN_ON(!list_empty(&acl->rules)); |
| 910 | mlxsw_sp_fid_put(acl->dummy_fid); |
| 911 | rhashtable_destroy(&acl->ruleset_ht); |
| 912 | mlxsw_afk_destroy(acl->afk); |
| 913 | kfree(acl); |
| 914 | } |