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 struct mlx5_modify_hdr { 58 enum mlx5_flow_namespace_type ns_type; 59 union { 60 struct mlx5_fs_dr_action action; 61 u32 id; 62 }; 63 }; 64 65 struct mlx5_pkt_reformat { 66 enum mlx5_flow_namespace_type ns_type; 67 int reformat_type; /* from mlx5_ifc */ 68 union { 69 struct mlx5_fs_dr_action action; 70 u32 id; 71 }; 72 }; 73 74 /* FS_TYPE_PRIO_CHAINS is a PRIO that will have namespaces only, 75 * and those are in parallel to one another when going over them to connect 76 * a new flow table. Meaning the last flow table in a TYPE_PRIO prio in one 77 * parallel namespace will not automatically connect to the first flow table 78 * found in any prio in any next namespace, but skip the entire containing 79 * TYPE_PRIO_CHAINS prio. 80 * 81 * This is used to implement tc chains, each chain of prios is a different 82 * namespace inside a containing TYPE_PRIO_CHAINS prio. 83 */ 84 85 enum fs_node_type { 86 FS_TYPE_NAMESPACE, 87 FS_TYPE_PRIO, 88 FS_TYPE_PRIO_CHAINS, 89 FS_TYPE_FLOW_TABLE, 90 FS_TYPE_FLOW_GROUP, 91 FS_TYPE_FLOW_ENTRY, 92 FS_TYPE_FLOW_DEST 93 }; 94 95 enum fs_flow_table_type { 96 FS_FT_NIC_RX = 0x0, 97 FS_FT_NIC_TX = 0x1, 98 FS_FT_ESW_EGRESS_ACL = 0x2, 99 FS_FT_ESW_INGRESS_ACL = 0x3, 100 FS_FT_FDB = 0X4, 101 FS_FT_SNIFFER_RX = 0X5, 102 FS_FT_SNIFFER_TX = 0X6, 103 FS_FT_RDMA_RX = 0X7, 104 FS_FT_RDMA_TX = 0X8, 105 FS_FT_PORT_SEL = 0X9, 106 FS_FT_MAX_TYPE = FS_FT_PORT_SEL, 107 }; 108 109 enum fs_flow_table_op_mod { 110 FS_FT_OP_MOD_NORMAL, 111 FS_FT_OP_MOD_LAG_DEMUX, 112 }; 113 114 enum fs_fte_status { 115 FS_FTE_STATUS_EXISTING = 1UL << 0, 116 }; 117 118 enum mlx5_flow_steering_mode { 119 MLX5_FLOW_STEERING_MODE_DMFS, 120 MLX5_FLOW_STEERING_MODE_SMFS 121 }; 122 123 struct mlx5_flow_steering { 124 struct mlx5_core_dev *dev; 125 enum mlx5_flow_steering_mode mode; 126 struct kmem_cache *fgs_cache; 127 struct kmem_cache *ftes_cache; 128 struct mlx5_flow_root_namespace *root_ns; 129 struct mlx5_flow_root_namespace *fdb_root_ns; 130 struct mlx5_flow_namespace **fdb_sub_ns; 131 struct mlx5_flow_root_namespace **esw_egress_root_ns; 132 struct mlx5_flow_root_namespace **esw_ingress_root_ns; 133 struct mlx5_flow_root_namespace *sniffer_tx_root_ns; 134 struct mlx5_flow_root_namespace *sniffer_rx_root_ns; 135 struct mlx5_flow_root_namespace *rdma_rx_root_ns; 136 struct mlx5_flow_root_namespace *rdma_tx_root_ns; 137 struct mlx5_flow_root_namespace *egress_root_ns; 138 struct mlx5_flow_root_namespace *port_sel_root_ns; 139 int esw_egress_acl_vports; 140 int esw_ingress_acl_vports; 141 }; 142 143 struct fs_node { 144 struct list_head list; 145 struct list_head children; 146 enum fs_node_type type; 147 struct fs_node *parent; 148 struct fs_node *root; 149 /* lock the node for writing and traversing */ 150 struct rw_semaphore lock; 151 refcount_t refcount; 152 bool active; 153 void (*del_hw_func)(struct fs_node *); 154 void (*del_sw_func)(struct fs_node *); 155 atomic_t version; 156 }; 157 158 struct mlx5_flow_rule { 159 struct fs_node node; 160 struct mlx5_flow_table *ft; 161 struct mlx5_flow_destination dest_attr; 162 /* next_ft should be accessed under chain_lock and only of 163 * destination type is FWD_NEXT_fT. 164 */ 165 struct list_head next_ft; 166 u32 sw_action; 167 }; 168 169 struct mlx5_flow_handle { 170 int num_rules; 171 struct mlx5_flow_rule *rule[]; 172 }; 173 174 /* Type of children is mlx5_flow_group */ 175 struct mlx5_flow_table { 176 struct fs_node node; 177 struct mlx5_fs_dr_table fs_dr_table; 178 u32 id; 179 u16 vport; 180 unsigned int max_fte; 181 unsigned int level; 182 enum fs_flow_table_type type; 183 enum fs_flow_table_op_mod op_mod; 184 struct { 185 bool active; 186 unsigned int required_groups; 187 unsigned int group_size; 188 unsigned int num_groups; 189 unsigned int max_fte; 190 } autogroup; 191 /* Protect fwd_rules */ 192 struct mutex lock; 193 /* FWD rules that point on this flow table */ 194 struct list_head fwd_rules; 195 u32 flags; 196 struct rhltable fgs_hash; 197 enum mlx5_flow_table_miss_action def_miss_action; 198 struct mlx5_flow_namespace *ns; 199 }; 200 201 struct mlx5_ft_underlay_qp { 202 struct list_head list; 203 u32 qpn; 204 }; 205 206 #define MLX5_FTE_MATCH_PARAM_RESERVED reserved_at_c00 207 /* Calculate the fte_match_param length and without the reserved length. 208 * Make sure the reserved field is the last. 209 */ 210 #define MLX5_ST_SZ_DW_MATCH_PARAM \ 211 ((MLX5_BYTE_OFF(fte_match_param, MLX5_FTE_MATCH_PARAM_RESERVED) / sizeof(u32)) + \ 212 BUILD_BUG_ON_ZERO(MLX5_ST_SZ_BYTES(fte_match_param) != \ 213 MLX5_FLD_SZ_BYTES(fte_match_param, \ 214 MLX5_FTE_MATCH_PARAM_RESERVED) +\ 215 MLX5_BYTE_OFF(fte_match_param, \ 216 MLX5_FTE_MATCH_PARAM_RESERVED))) 217 218 /* Type of children is mlx5_flow_rule */ 219 struct fs_fte { 220 struct fs_node node; 221 struct mlx5_fs_dr_rule fs_dr_rule; 222 u32 val[MLX5_ST_SZ_DW_MATCH_PARAM]; 223 u32 dests_size; 224 u32 index; 225 struct mlx5_flow_context flow_context; 226 struct mlx5_flow_act action; 227 enum fs_fte_status status; 228 struct mlx5_fc *counter; 229 struct rhash_head hash; 230 int modify_mask; 231 }; 232 233 /* Type of children is mlx5_flow_table/namespace */ 234 struct fs_prio { 235 struct fs_node node; 236 unsigned int num_levels; 237 unsigned int start_level; 238 unsigned int prio; 239 unsigned int num_ft; 240 }; 241 242 /* Type of children is fs_prio */ 243 struct mlx5_flow_namespace { 244 /* parent == NULL => root ns */ 245 struct fs_node node; 246 enum mlx5_flow_table_miss_action def_miss_action; 247 }; 248 249 struct mlx5_flow_group_mask { 250 u8 match_criteria_enable; 251 u32 match_criteria[MLX5_ST_SZ_DW_MATCH_PARAM]; 252 }; 253 254 /* Type of children is fs_fte */ 255 struct mlx5_flow_group { 256 struct fs_node node; 257 struct mlx5_fs_dr_matcher fs_dr_matcher; 258 struct mlx5_flow_group_mask mask; 259 u32 start_index; 260 u32 max_ftes; 261 struct ida fte_allocator; 262 u32 id; 263 struct rhashtable ftes_hash; 264 struct rhlist_head hash; 265 }; 266 267 struct mlx5_flow_root_namespace { 268 struct mlx5_flow_namespace ns; 269 enum mlx5_flow_steering_mode mode; 270 struct mlx5_fs_dr_domain fs_dr_domain; 271 enum fs_flow_table_type table_type; 272 struct mlx5_core_dev *dev; 273 struct mlx5_flow_table *root_ft; 274 /* Should be held when chaining flow tables */ 275 struct mutex chain_lock; 276 struct list_head underlay_qpns; 277 const struct mlx5_flow_cmds *cmds; 278 }; 279 280 int mlx5_init_fc_stats(struct mlx5_core_dev *dev); 281 void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev); 282 void mlx5_fc_queue_stats_work(struct mlx5_core_dev *dev, 283 struct delayed_work *dwork, 284 unsigned long delay); 285 void mlx5_fc_update_sampling_interval(struct mlx5_core_dev *dev, 286 unsigned long interval); 287 288 const struct mlx5_flow_cmds *mlx5_fs_cmd_get_fw_cmds(void); 289 290 int mlx5_flow_namespace_set_peer(struct mlx5_flow_root_namespace *ns, 291 struct mlx5_flow_root_namespace *peer_ns); 292 293 int mlx5_flow_namespace_set_mode(struct mlx5_flow_namespace *ns, 294 enum mlx5_flow_steering_mode mode); 295 296 int mlx5_init_fs(struct mlx5_core_dev *dev); 297 void mlx5_cleanup_fs(struct mlx5_core_dev *dev); 298 299 int mlx5_fs_egress_acls_init(struct mlx5_core_dev *dev, int total_vports); 300 void mlx5_fs_egress_acls_cleanup(struct mlx5_core_dev *dev); 301 int mlx5_fs_ingress_acls_init(struct mlx5_core_dev *dev, int total_vports); 302 void mlx5_fs_ingress_acls_cleanup(struct mlx5_core_dev *dev); 303 304 struct mlx5_flow_root_namespace *find_root(struct fs_node *node); 305 306 #define fs_get_obj(v, _node) {v = container_of((_node), typeof(*v), node); } 307 308 #define fs_list_for_each_entry(pos, root) \ 309 list_for_each_entry(pos, root, node.list) 310 311 #define fs_list_for_each_entry_safe(pos, tmp, root) \ 312 list_for_each_entry_safe(pos, tmp, root, node.list) 313 314 #define fs_for_each_ns_or_ft_reverse(pos, prio) \ 315 list_for_each_entry_reverse(pos, &(prio)->node.children, list) 316 317 #define fs_for_each_ns_or_ft(pos, prio) \ 318 list_for_each_entry(pos, (&(prio)->node.children), list) 319 320 #define fs_for_each_prio(pos, ns) \ 321 fs_list_for_each_entry(pos, &(ns)->node.children) 322 323 #define fs_for_each_ns(pos, prio) \ 324 fs_list_for_each_entry(pos, &(prio)->node.children) 325 326 #define fs_for_each_ft(pos, prio) \ 327 fs_list_for_each_entry(pos, &(prio)->node.children) 328 329 #define fs_for_each_ft_safe(pos, tmp, prio) \ 330 fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children) 331 332 #define fs_for_each_fg(pos, ft) \ 333 fs_list_for_each_entry(pos, &(ft)->node.children) 334 335 #define fs_for_each_fte(pos, fg) \ 336 fs_list_for_each_entry(pos, &(fg)->node.children) 337 338 #define fs_for_each_dst(pos, fte) \ 339 fs_list_for_each_entry(pos, &(fte)->node.children) 340 341 #define MLX5_CAP_FLOWTABLE_TYPE(mdev, cap, type) ( \ 342 (type == FS_FT_NIC_RX) ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, cap) : \ 343 (type == FS_FT_NIC_TX) ? MLX5_CAP_FLOWTABLE_NIC_TX(mdev, cap) : \ 344 (type == FS_FT_ESW_EGRESS_ACL) ? MLX5_CAP_ESW_EGRESS_ACL(mdev, cap) : \ 345 (type == FS_FT_ESW_INGRESS_ACL) ? MLX5_CAP_ESW_INGRESS_ACL(mdev, cap) : \ 346 (type == FS_FT_FDB) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) : \ 347 (type == FS_FT_SNIFFER_RX) ? MLX5_CAP_FLOWTABLE_SNIFFER_RX(mdev, cap) : \ 348 (type == FS_FT_SNIFFER_TX) ? MLX5_CAP_FLOWTABLE_SNIFFER_TX(mdev, cap) : \ 349 (type == FS_FT_RDMA_RX) ? MLX5_CAP_FLOWTABLE_RDMA_RX(mdev, cap) : \ 350 (type == FS_FT_RDMA_TX) ? MLX5_CAP_FLOWTABLE_RDMA_TX(mdev, cap) : \ 351 (type == FS_FT_PORT_SEL) ? MLX5_CAP_FLOWTABLE_PORT_SELECTION(mdev, cap) : \ 352 (BUILD_BUG_ON_ZERO(FS_FT_PORT_SEL != FS_FT_MAX_TYPE))\ 353 ) 354 355 #endif 356