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/fs_dr.h> 41 42 #define FDB_TC_MAX_CHAIN 3 43 #define FDB_FT_CHAIN (FDB_TC_MAX_CHAIN + 1) 44 #define FDB_TC_SLOW_PATH_CHAIN (FDB_FT_CHAIN + 1) 45 46 /* The index of the last real chain (FT) + 1 as chain zero is valid as well */ 47 #define FDB_NUM_CHAINS (FDB_FT_CHAIN + 1) 48 49 #define FDB_TC_MAX_PRIO 16 50 #define FDB_TC_LEVELS_PER_PRIO 2 51 52 struct mlx5_flow_definer { 53 enum mlx5_flow_namespace_type ns_type; 54 u32 id; 55 }; 56 57 enum mlx5_flow_resource_owner { 58 MLX5_FLOW_RESOURCE_OWNER_FW, 59 MLX5_FLOW_RESOURCE_OWNER_SW, 60 }; 61 62 struct mlx5_modify_hdr { 63 enum mlx5_flow_namespace_type ns_type; 64 enum mlx5_flow_resource_owner owner; 65 union { 66 struct mlx5_fs_dr_action action; 67 u32 id; 68 }; 69 }; 70 71 struct mlx5_pkt_reformat { 72 enum mlx5_flow_namespace_type ns_type; 73 int reformat_type; /* from mlx5_ifc */ 74 enum mlx5_flow_resource_owner owner; 75 union { 76 struct mlx5_fs_dr_action action; 77 u32 id; 78 }; 79 }; 80 81 /* FS_TYPE_PRIO_CHAINS is a PRIO that will have namespaces only, 82 * and those are in parallel to one another when going over them to connect 83 * a new flow table. Meaning the last flow table in a TYPE_PRIO prio in one 84 * parallel namespace will not automatically connect to the first flow table 85 * found in any prio in any next namespace, but skip the entire containing 86 * TYPE_PRIO_CHAINS prio. 87 * 88 * This is used to implement tc chains, each chain of prios is a different 89 * namespace inside a containing TYPE_PRIO_CHAINS prio. 90 */ 91 92 enum fs_node_type { 93 FS_TYPE_NAMESPACE, 94 FS_TYPE_PRIO, 95 FS_TYPE_PRIO_CHAINS, 96 FS_TYPE_FLOW_TABLE, 97 FS_TYPE_FLOW_GROUP, 98 FS_TYPE_FLOW_ENTRY, 99 FS_TYPE_FLOW_DEST 100 }; 101 102 enum fs_flow_table_type { 103 FS_FT_NIC_RX = 0x0, 104 FS_FT_NIC_TX = 0x1, 105 FS_FT_ESW_EGRESS_ACL = 0x2, 106 FS_FT_ESW_INGRESS_ACL = 0x3, 107 FS_FT_FDB = 0X4, 108 FS_FT_SNIFFER_RX = 0X5, 109 FS_FT_SNIFFER_TX = 0X6, 110 FS_FT_RDMA_RX = 0X7, 111 FS_FT_RDMA_TX = 0X8, 112 FS_FT_PORT_SEL = 0X9, 113 FS_FT_MAX_TYPE = FS_FT_PORT_SEL, 114 }; 115 116 enum fs_flow_table_op_mod { 117 FS_FT_OP_MOD_NORMAL, 118 FS_FT_OP_MOD_LAG_DEMUX, 119 }; 120 121 enum fs_fte_status { 122 FS_FTE_STATUS_EXISTING = 1UL << 0, 123 }; 124 125 enum mlx5_flow_steering_mode { 126 MLX5_FLOW_STEERING_MODE_DMFS, 127 MLX5_FLOW_STEERING_MODE_SMFS 128 }; 129 130 enum mlx5_flow_steering_capabilty { 131 MLX5_FLOW_STEERING_CAP_VLAN_PUSH_ON_RX = 1UL << 0, 132 MLX5_FLOW_STEERING_CAP_VLAN_POP_ON_TX = 1UL << 1, 133 MLX5_FLOW_STEERING_CAP_MATCH_RANGES = 1UL << 2, 134 }; 135 136 struct mlx5_flow_steering { 137 struct mlx5_core_dev *dev; 138 enum mlx5_flow_steering_mode mode; 139 struct kmem_cache *fgs_cache; 140 struct kmem_cache *ftes_cache; 141 struct mlx5_flow_root_namespace *root_ns; 142 struct mlx5_flow_root_namespace *fdb_root_ns; 143 struct mlx5_flow_namespace **fdb_sub_ns; 144 struct mlx5_flow_root_namespace **esw_egress_root_ns; 145 struct mlx5_flow_root_namespace **esw_ingress_root_ns; 146 struct mlx5_flow_root_namespace *sniffer_tx_root_ns; 147 struct mlx5_flow_root_namespace *sniffer_rx_root_ns; 148 struct mlx5_flow_root_namespace *rdma_rx_root_ns; 149 struct mlx5_flow_root_namespace *rdma_tx_root_ns; 150 struct mlx5_flow_root_namespace *egress_root_ns; 151 struct mlx5_flow_root_namespace *port_sel_root_ns; 152 int esw_egress_acl_vports; 153 int esw_ingress_acl_vports; 154 }; 155 156 struct fs_node { 157 struct list_head list; 158 struct list_head children; 159 enum fs_node_type type; 160 struct fs_node *parent; 161 struct fs_node *root; 162 /* lock the node for writing and traversing */ 163 struct rw_semaphore lock; 164 refcount_t refcount; 165 bool active; 166 void (*del_hw_func)(struct fs_node *); 167 void (*del_sw_func)(struct fs_node *); 168 atomic_t version; 169 }; 170 171 struct mlx5_flow_rule { 172 struct fs_node node; 173 struct mlx5_flow_table *ft; 174 struct mlx5_flow_destination dest_attr; 175 /* next_ft should be accessed under chain_lock and only of 176 * destination type is FWD_NEXT_fT. 177 */ 178 struct list_head next_ft; 179 u32 sw_action; 180 }; 181 182 struct mlx5_flow_handle { 183 int num_rules; 184 struct mlx5_flow_rule *rule[]; 185 }; 186 187 /* Type of children is mlx5_flow_group */ 188 struct mlx5_flow_table { 189 struct fs_node node; 190 struct mlx5_fs_dr_table fs_dr_table; 191 u32 id; 192 u16 vport; 193 unsigned int max_fte; 194 unsigned int level; 195 enum fs_flow_table_type type; 196 enum fs_flow_table_op_mod op_mod; 197 struct { 198 bool active; 199 unsigned int required_groups; 200 unsigned int group_size; 201 unsigned int num_groups; 202 unsigned int max_fte; 203 } autogroup; 204 /* Protect fwd_rules */ 205 struct mutex lock; 206 /* FWD rules that point on this flow table */ 207 struct list_head fwd_rules; 208 u32 flags; 209 struct rhltable fgs_hash; 210 enum mlx5_flow_table_miss_action def_miss_action; 211 struct mlx5_flow_namespace *ns; 212 }; 213 214 struct mlx5_ft_underlay_qp { 215 struct list_head list; 216 u32 qpn; 217 }; 218 219 #define MLX5_FTE_MATCH_PARAM_RESERVED reserved_at_e00 220 /* Calculate the fte_match_param length and without the reserved length. 221 * Make sure the reserved field is the last. 222 */ 223 #define MLX5_ST_SZ_DW_MATCH_PARAM \ 224 ((MLX5_BYTE_OFF(fte_match_param, MLX5_FTE_MATCH_PARAM_RESERVED) / sizeof(u32)) + \ 225 BUILD_BUG_ON_ZERO(MLX5_ST_SZ_BYTES(fte_match_param) != \ 226 MLX5_FLD_SZ_BYTES(fte_match_param, \ 227 MLX5_FTE_MATCH_PARAM_RESERVED) +\ 228 MLX5_BYTE_OFF(fte_match_param, \ 229 MLX5_FTE_MATCH_PARAM_RESERVED))) 230 231 /* Type of children is mlx5_flow_rule */ 232 struct fs_fte { 233 struct fs_node node; 234 struct mlx5_fs_dr_rule fs_dr_rule; 235 u32 val[MLX5_ST_SZ_DW_MATCH_PARAM]; 236 u32 dests_size; 237 u32 fwd_dests; 238 u32 index; 239 struct mlx5_flow_context flow_context; 240 struct mlx5_flow_act action; 241 enum fs_fte_status status; 242 struct mlx5_fc *counter; 243 struct rhash_head hash; 244 int modify_mask; 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 struct mlx5_fs_dr_matcher fs_dr_matcher; 272 struct mlx5_flow_group_mask mask; 273 u32 start_index; 274 u32 max_ftes; 275 struct ida fte_allocator; 276 u32 id; 277 struct rhashtable ftes_hash; 278 struct rhlist_head hash; 279 }; 280 281 struct mlx5_flow_root_namespace { 282 struct mlx5_flow_namespace ns; 283 enum mlx5_flow_steering_mode mode; 284 struct mlx5_fs_dr_domain fs_dr_domain; 285 enum fs_flow_table_type table_type; 286 struct mlx5_core_dev *dev; 287 struct mlx5_flow_table *root_ft; 288 /* Should be held when chaining flow tables */ 289 struct mutex chain_lock; 290 struct list_head underlay_qpns; 291 const struct mlx5_flow_cmds *cmds; 292 }; 293 294 int mlx5_init_fc_stats(struct mlx5_core_dev *dev); 295 void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev); 296 void mlx5_fc_queue_stats_work(struct mlx5_core_dev *dev, 297 struct delayed_work *dwork, 298 unsigned long delay); 299 void mlx5_fc_update_sampling_interval(struct mlx5_core_dev *dev, 300 unsigned long interval); 301 302 const struct mlx5_flow_cmds *mlx5_fs_cmd_get_fw_cmds(void); 303 304 int mlx5_flow_namespace_set_peer(struct mlx5_flow_root_namespace *ns, 305 struct mlx5_flow_root_namespace *peer_ns, 306 u16 peer_vhca_id); 307 308 int mlx5_flow_namespace_set_mode(struct mlx5_flow_namespace *ns, 309 enum mlx5_flow_steering_mode mode); 310 311 int mlx5_fs_core_alloc(struct mlx5_core_dev *dev); 312 void mlx5_fs_core_free(struct mlx5_core_dev *dev); 313 int mlx5_fs_core_init(struct mlx5_core_dev *dev); 314 void mlx5_fs_core_cleanup(struct mlx5_core_dev *dev); 315 316 int mlx5_fs_egress_acls_init(struct mlx5_core_dev *dev, int total_vports); 317 void mlx5_fs_egress_acls_cleanup(struct mlx5_core_dev *dev); 318 int mlx5_fs_ingress_acls_init(struct mlx5_core_dev *dev, int total_vports); 319 void mlx5_fs_ingress_acls_cleanup(struct mlx5_core_dev *dev); 320 321 u32 mlx5_fs_get_capabilities(struct mlx5_core_dev *dev, enum mlx5_flow_namespace_type type); 322 323 struct mlx5_flow_root_namespace *find_root(struct fs_node *node); 324 325 #define fs_get_obj(v, _node) {v = container_of((_node), typeof(*v), node); } 326 327 #define fs_list_for_each_entry(pos, root) \ 328 list_for_each_entry(pos, root, node.list) 329 330 #define fs_list_for_each_entry_safe(pos, tmp, root) \ 331 list_for_each_entry_safe(pos, tmp, root, node.list) 332 333 #define fs_for_each_ns_or_ft_reverse(pos, prio) \ 334 list_for_each_entry_reverse(pos, &(prio)->node.children, list) 335 336 #define fs_for_each_ns_or_ft(pos, prio) \ 337 list_for_each_entry(pos, (&(prio)->node.children), list) 338 339 #define fs_for_each_prio(pos, ns) \ 340 fs_list_for_each_entry(pos, &(ns)->node.children) 341 342 #define fs_for_each_ns(pos, prio) \ 343 fs_list_for_each_entry(pos, &(prio)->node.children) 344 345 #define fs_for_each_ft(pos, prio) \ 346 fs_list_for_each_entry(pos, &(prio)->node.children) 347 348 #define fs_for_each_ft_safe(pos, tmp, prio) \ 349 fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children) 350 351 #define fs_for_each_fg(pos, ft) \ 352 fs_list_for_each_entry(pos, &(ft)->node.children) 353 354 #define fs_for_each_fte(pos, fg) \ 355 fs_list_for_each_entry(pos, &(fg)->node.children) 356 357 #define fs_for_each_dst(pos, fte) \ 358 fs_list_for_each_entry(pos, &(fte)->node.children) 359 360 #define MLX5_CAP_FLOWTABLE_TYPE(mdev, cap, type) ( \ 361 (type == FS_FT_NIC_RX) ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, cap) : \ 362 (type == FS_FT_NIC_TX) ? MLX5_CAP_FLOWTABLE_NIC_TX(mdev, cap) : \ 363 (type == FS_FT_ESW_EGRESS_ACL) ? MLX5_CAP_ESW_EGRESS_ACL(mdev, cap) : \ 364 (type == FS_FT_ESW_INGRESS_ACL) ? MLX5_CAP_ESW_INGRESS_ACL(mdev, cap) : \ 365 (type == FS_FT_FDB) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) : \ 366 (type == FS_FT_SNIFFER_RX) ? MLX5_CAP_FLOWTABLE_SNIFFER_RX(mdev, cap) : \ 367 (type == FS_FT_SNIFFER_TX) ? MLX5_CAP_FLOWTABLE_SNIFFER_TX(mdev, cap) : \ 368 (type == FS_FT_RDMA_RX) ? MLX5_CAP_FLOWTABLE_RDMA_RX(mdev, cap) : \ 369 (type == FS_FT_RDMA_TX) ? MLX5_CAP_FLOWTABLE_RDMA_TX(mdev, cap) : \ 370 (type == FS_FT_PORT_SEL) ? MLX5_CAP_FLOWTABLE_PORT_SELECTION(mdev, cap) : \ 371 (BUILD_BUG_ON_ZERO(FS_FT_PORT_SEL != FS_FT_MAX_TYPE))\ 372 ) 373 374 #endif 375