1 /* 2 * Copyright (c) 2015, 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 #ifndef _MLX5_FS_CORE_ 34 #define _MLX5_FS_CORE_ 35 36 #include <linux/refcount.h> 37 #include <linux/mlx5/fs.h> 38 #include <linux/rhashtable.h> 39 #include <linux/llist.h> 40 #include <steering/sws/fs_dr.h> 41 #include <steering/hws/fs_hws.h> 42 43 #define FDB_TC_MAX_CHAIN 3 44 #define FDB_FT_CHAIN (FDB_TC_MAX_CHAIN + 1) 45 #define FDB_TC_SLOW_PATH_CHAIN (FDB_FT_CHAIN + 1) 46 47 /* The index of the last real chain (FT) + 1 as chain zero is valid as well */ 48 #define FDB_NUM_CHAINS (FDB_FT_CHAIN + 1) 49 50 #define FDB_TC_MAX_PRIO 16 51 #define FDB_TC_LEVELS_PER_PRIO 2 52 53 struct mlx5_flow_definer { 54 enum mlx5_flow_namespace_type ns_type; 55 u32 id; 56 }; 57 58 enum mlx5_flow_resource_owner { 59 MLX5_FLOW_RESOURCE_OWNER_FW, 60 MLX5_FLOW_RESOURCE_OWNER_SW, 61 MLX5_FLOW_RESOURCE_OWNER_HWS, 62 }; 63 64 struct mlx5_modify_hdr { 65 enum mlx5_flow_namespace_type ns_type; 66 enum mlx5_flow_resource_owner owner; 67 union { 68 struct mlx5_fs_dr_action fs_dr_action; 69 struct mlx5_fs_hws_action fs_hws_action; 70 u32 id; 71 }; 72 }; 73 74 struct mlx5_pkt_reformat { 75 enum mlx5_flow_namespace_type ns_type; 76 int reformat_type; /* from mlx5_ifc */ 77 enum mlx5_flow_resource_owner owner; 78 union { 79 struct mlx5_fs_dr_action fs_dr_action; 80 struct mlx5_fs_hws_action fs_hws_action; 81 u32 id; 82 }; 83 }; 84 85 /* FS_TYPE_PRIO_CHAINS is a PRIO that will have namespaces only, 86 * and those are in parallel to one another when going over them to connect 87 * a new flow table. Meaning the last flow table in a TYPE_PRIO prio in one 88 * parallel namespace will not automatically connect to the first flow table 89 * found in any prio in any next namespace, but skip the entire containing 90 * TYPE_PRIO_CHAINS prio. 91 * 92 * This is used to implement tc chains, each chain of prios is a different 93 * namespace inside a containing TYPE_PRIO_CHAINS prio. 94 */ 95 96 enum fs_node_type { 97 FS_TYPE_NAMESPACE, 98 FS_TYPE_PRIO, 99 FS_TYPE_PRIO_CHAINS, 100 FS_TYPE_FLOW_TABLE, 101 FS_TYPE_FLOW_GROUP, 102 FS_TYPE_FLOW_ENTRY, 103 FS_TYPE_FLOW_DEST 104 }; 105 106 enum fs_flow_table_op_mod { 107 FS_FT_OP_MOD_NORMAL, 108 FS_FT_OP_MOD_LAG_DEMUX, 109 }; 110 111 enum fs_fte_status { 112 FS_FTE_STATUS_EXISTING = 1UL << 0, 113 }; 114 115 enum mlx5_flow_steering_mode { 116 MLX5_FLOW_STEERING_MODE_DMFS, 117 MLX5_FLOW_STEERING_MODE_SMFS, 118 MLX5_FLOW_STEERING_MODE_HMFS, 119 }; 120 121 enum mlx5_flow_steering_capabilty { 122 MLX5_FLOW_STEERING_CAP_VLAN_PUSH_ON_RX = 1UL << 0, 123 MLX5_FLOW_STEERING_CAP_VLAN_POP_ON_TX = 1UL << 1, 124 MLX5_FLOW_STEERING_CAP_MATCH_RANGES = 1UL << 2, 125 MLX5_FLOW_STEERING_CAP_DUPLICATE_MATCH = 1UL << 3, 126 }; 127 128 struct mlx5_flow_steering { 129 struct mlx5_core_dev *dev; 130 enum mlx5_flow_steering_mode mode; 131 struct kmem_cache *fgs_cache; 132 struct kmem_cache *ftes_cache; 133 struct mlx5_flow_root_namespace *root_ns; 134 struct mlx5_flow_root_namespace *fdb_root_ns; 135 struct mlx5_flow_namespace **fdb_sub_ns; 136 struct xarray esw_egress_root_ns; 137 struct xarray esw_ingress_root_ns; 138 struct mlx5_flow_root_namespace *sniffer_tx_root_ns; 139 struct mlx5_flow_root_namespace *sniffer_rx_root_ns; 140 struct mlx5_flow_root_namespace *rdma_rx_root_ns; 141 struct mlx5_flow_root_namespace *rdma_tx_root_ns; 142 struct mlx5_flow_root_namespace *egress_root_ns; 143 struct mlx5_flow_root_namespace *port_sel_root_ns; 144 struct mlx5_flow_root_namespace **rdma_transport_rx_root_ns; 145 struct mlx5_flow_root_namespace **rdma_transport_tx_root_ns; 146 int rdma_transport_rx_vports; 147 int rdma_transport_tx_vports; 148 }; 149 150 struct fs_node { 151 struct list_head list; 152 struct list_head children; 153 enum fs_node_type type; 154 struct fs_node *parent; 155 struct fs_node *root; 156 /* lock the node for writing and traversing */ 157 struct rw_semaphore lock; 158 refcount_t refcount; 159 bool active; 160 void (*del_hw_func)(struct fs_node *); 161 void (*del_sw_func)(struct fs_node *); 162 atomic_t version; 163 }; 164 165 struct mlx5_flow_rule { 166 struct fs_node node; 167 struct mlx5_flow_table *ft; 168 struct mlx5_flow_destination dest_attr; 169 /* next_ft should be accessed under chain_lock and only of 170 * destination type is FWD_NEXT_fT. 171 */ 172 struct list_head next_ft; 173 u32 sw_action; 174 }; 175 176 struct mlx5_flow_handle { 177 int num_rules; 178 struct mlx5_flow_rule *rule[] __counted_by(num_rules); 179 }; 180 181 /* Type of children is mlx5_flow_group */ 182 struct mlx5_flow_table { 183 struct fs_node node; 184 union { 185 struct mlx5_fs_dr_table fs_dr_table; 186 struct mlx5_fs_hws_table fs_hws_table; 187 }; 188 u32 id; 189 u16 vport; 190 u16 esw_owner_vhca_id; 191 unsigned int max_fte; 192 unsigned int level; 193 enum fs_flow_table_type type; 194 enum fs_flow_table_op_mod op_mod; 195 struct { 196 bool active; 197 unsigned int required_groups; 198 unsigned int group_size; 199 unsigned int num_groups; 200 unsigned int max_fte; 201 } autogroup; 202 /* Protect fwd_rules */ 203 struct mutex lock; 204 /* FWD rules that point on this flow table */ 205 struct list_head fwd_rules; 206 u32 flags; 207 struct rhltable fgs_hash; 208 enum mlx5_flow_table_miss_action def_miss_action; 209 struct mlx5_flow_namespace *ns; 210 }; 211 212 struct mlx5_ft_underlay_qp { 213 struct list_head list; 214 u32 qpn; 215 }; 216 217 #define MLX5_ST_SZ_DW_MATCH_PARAM MLX5_ST_SZ_DW(fte_match_param) 218 219 struct fs_fte_action { 220 int modify_mask; 221 u32 dests_size; 222 u32 fwd_dests; 223 struct mlx5_flow_context flow_context; 224 struct mlx5_flow_act action; 225 }; 226 227 struct fs_fte_dup { 228 struct list_head children; 229 struct fs_fte_action act_dests; 230 }; 231 232 /* Type of children is mlx5_flow_rule */ 233 struct fs_fte { 234 struct fs_node node; 235 union { 236 struct mlx5_fs_dr_rule fs_dr_rule; 237 struct mlx5_fs_hws_rule fs_hws_rule; 238 }; 239 u32 val[MLX5_ST_SZ_DW_MATCH_PARAM]; 240 struct fs_fte_action act_dests; 241 struct fs_fte_dup *dup; 242 u32 index; 243 enum fs_fte_status status; 244 struct rhash_head hash; 245 }; 246 247 /* Type of children is mlx5_flow_table/namespace */ 248 struct fs_prio { 249 struct fs_node node; 250 unsigned int num_levels; 251 unsigned int start_level; 252 unsigned int prio; 253 unsigned int num_ft; 254 }; 255 256 /* Type of children is fs_prio */ 257 struct mlx5_flow_namespace { 258 /* parent == NULL => root ns */ 259 struct fs_node node; 260 enum mlx5_flow_table_miss_action def_miss_action; 261 }; 262 263 struct mlx5_flow_group_mask { 264 u8 match_criteria_enable; 265 u32 match_criteria[MLX5_ST_SZ_DW_MATCH_PARAM]; 266 }; 267 268 /* Type of children is fs_fte */ 269 struct mlx5_flow_group { 270 struct fs_node node; 271 union { 272 struct mlx5_fs_dr_matcher fs_dr_matcher; 273 struct mlx5_fs_hws_matcher fs_hws_matcher; 274 }; 275 struct mlx5_flow_group_mask mask; 276 u32 start_index; 277 u32 max_ftes; 278 struct ida fte_allocator; 279 u32 id; 280 struct rhashtable ftes_hash; 281 struct rhlist_head hash; 282 }; 283 284 struct mlx5_flow_root_namespace { 285 struct mlx5_flow_namespace ns; 286 enum mlx5_flow_steering_mode mode; 287 union { 288 struct mlx5_fs_dr_domain fs_dr_domain; 289 struct mlx5_fs_hws_context fs_hws_context; 290 }; 291 enum fs_flow_table_type table_type; 292 struct mlx5_core_dev *dev; 293 struct mlx5_flow_table *root_ft; 294 /* Should be held when chaining flow tables */ 295 struct mutex chain_lock; 296 struct list_head underlay_qpns; 297 const struct mlx5_flow_cmds *cmds; 298 }; 299 300 enum mlx5_fc_type { 301 MLX5_FC_TYPE_POOL_ACQUIRED = 0, 302 MLX5_FC_TYPE_SINGLE, 303 MLX5_FC_TYPE_LOCAL, 304 }; 305 306 struct mlx5_fc_cache { 307 u64 packets; 308 u64 bytes; 309 u64 lastuse; 310 }; 311 312 struct mlx5_fc { 313 u32 id; 314 bool aging; 315 enum mlx5_fc_type type; 316 struct mlx5_fc_bulk *bulk; 317 struct mlx5_fc_cache cache; 318 refcount_t fc_local_refcount; 319 /* last{packets,bytes} are used for calculating deltas since last reading. */ 320 u64 lastpackets; 321 u64 lastbytes; 322 }; 323 324 struct mlx5_fc_bulk { 325 struct mlx5_fs_bulk fs_bulk; 326 u32 base_id; 327 struct mlx5_fs_hws_data hws_data; 328 struct mlx5_fc fcs[]; 329 }; 330 331 u32 mlx5_fc_get_base_id(struct mlx5_fc *counter); 332 int mlx5_init_fc_stats(struct mlx5_core_dev *dev); 333 void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev); 334 void mlx5_fc_queue_stats_work(struct mlx5_core_dev *dev, 335 struct delayed_work *dwork, 336 unsigned long delay); 337 void mlx5_fc_update_sampling_interval(struct mlx5_core_dev *dev, 338 unsigned long interval); 339 340 const struct mlx5_flow_cmds *mlx5_fs_cmd_get_fw_cmds(void); 341 342 int mlx5_flow_namespace_set_peer(struct mlx5_flow_root_namespace *ns, 343 struct mlx5_flow_root_namespace *peer_ns, 344 u16 peer_vhca_id); 345 346 int mlx5_flow_namespace_set_mode(struct mlx5_flow_namespace *ns, 347 enum mlx5_flow_steering_mode mode); 348 349 int mlx5_fs_core_alloc(struct mlx5_core_dev *dev); 350 void mlx5_fs_core_free(struct mlx5_core_dev *dev); 351 int mlx5_fs_core_init(struct mlx5_core_dev *dev); 352 void mlx5_fs_core_cleanup(struct mlx5_core_dev *dev); 353 354 int mlx5_fs_vport_egress_acl_ns_add(struct mlx5_flow_steering *steering, 355 u16 vport_idx); 356 int mlx5_fs_vport_ingress_acl_ns_add(struct mlx5_flow_steering *steering, 357 u16 vport_idx); 358 void mlx5_fs_vport_egress_acl_ns_remove(struct mlx5_flow_steering *steering, 359 int vport_idx); 360 void mlx5_fs_vport_ingress_acl_ns_remove(struct mlx5_flow_steering *steering, 361 int vport_idx); 362 363 u32 mlx5_fs_get_capabilities(struct mlx5_core_dev *dev, enum mlx5_flow_namespace_type type); 364 365 struct mlx5_flow_root_namespace *find_root(struct fs_node *node); 366 367 int mlx5_fs_get_packet_reformat_id(struct mlx5_pkt_reformat *pkt_reformat, 368 u32 *id); 369 370 #define fs_get_obj(v, _node) {v = container_of((_node), typeof(*v), node); } 371 372 #define fs_list_for_each_entry(pos, root) \ 373 list_for_each_entry(pos, root, node.list) 374 375 #define fs_list_for_each_entry_safe(pos, tmp, root) \ 376 list_for_each_entry_safe(pos, tmp, root, node.list) 377 378 #define fs_for_each_ns_or_ft_reverse(pos, prio) \ 379 list_for_each_entry_reverse(pos, &(prio)->node.children, list) 380 381 #define fs_for_each_ns_or_ft(pos, prio) \ 382 list_for_each_entry(pos, (&(prio)->node.children), list) 383 384 #define fs_for_each_prio(pos, ns) \ 385 fs_list_for_each_entry(pos, &(ns)->node.children) 386 387 #define fs_for_each_ns(pos, prio) \ 388 fs_list_for_each_entry(pos, &(prio)->node.children) 389 390 #define fs_for_each_ft(pos, prio) \ 391 fs_list_for_each_entry(pos, &(prio)->node.children) 392 393 #define fs_for_each_ft_safe(pos, tmp, prio) \ 394 fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children) 395 396 #define fs_for_each_fg(pos, ft) \ 397 fs_list_for_each_entry(pos, &(ft)->node.children) 398 399 #define fs_for_each_fte(pos, fg) \ 400 fs_list_for_each_entry(pos, &(fg)->node.children) 401 402 #define fs_for_each_dst(pos, fte) \ 403 fs_list_for_each_entry(pos, &(fte)->node.children) 404 405 #define MLX5_CAP_FLOWTABLE_TYPE(mdev, cap, type) ( \ 406 (type == FS_FT_NIC_RX) ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, cap) : \ 407 (type == FS_FT_NIC_TX) ? MLX5_CAP_FLOWTABLE_NIC_TX(mdev, cap) : \ 408 (type == FS_FT_ESW_EGRESS_ACL) ? MLX5_CAP_ESW_EGRESS_ACL(mdev, cap) : \ 409 (type == FS_FT_ESW_INGRESS_ACL) ? MLX5_CAP_ESW_INGRESS_ACL(mdev, cap) : \ 410 (type == FS_FT_FDB) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) : \ 411 (type == FS_FT_SNIFFER_RX) ? MLX5_CAP_FLOWTABLE_SNIFFER_RX(mdev, cap) : \ 412 (type == FS_FT_SNIFFER_TX) ? MLX5_CAP_FLOWTABLE_SNIFFER_TX(mdev, cap) : \ 413 (type == FS_FT_RDMA_RX) ? MLX5_CAP_FLOWTABLE_RDMA_RX(mdev, cap) : \ 414 (type == FS_FT_RDMA_TX) ? MLX5_CAP_FLOWTABLE_RDMA_TX(mdev, cap) : \ 415 (type == FS_FT_PORT_SEL) ? MLX5_CAP_FLOWTABLE_PORT_SELECTION(mdev, cap) : \ 416 (type == FS_FT_FDB_RX) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) : \ 417 (type == FS_FT_FDB_TX) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) : \ 418 (type == FS_FT_RDMA_TRANSPORT_RX) ? MLX5_CAP_FLOWTABLE_RDMA_TRANSPORT_RX(mdev, cap) : \ 419 (type == FS_FT_RDMA_TRANSPORT_TX) ? MLX5_CAP_FLOWTABLE_RDMA_TRANSPORT_TX(mdev, cap) : \ 420 (BUILD_BUG_ON_ZERO(FS_FT_RDMA_TRANSPORT_TX != FS_FT_MAX_TYPE))\ 421 ) 422 423 #endif 424