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 40 enum fs_node_type { 41 FS_TYPE_NAMESPACE, 42 FS_TYPE_PRIO, 43 FS_TYPE_FLOW_TABLE, 44 FS_TYPE_FLOW_GROUP, 45 FS_TYPE_FLOW_ENTRY, 46 FS_TYPE_FLOW_DEST 47 }; 48 49 enum fs_flow_table_type { 50 FS_FT_NIC_RX = 0x0, 51 FS_FT_NIC_TX = 0x1, 52 FS_FT_ESW_EGRESS_ACL = 0x2, 53 FS_FT_ESW_INGRESS_ACL = 0x3, 54 FS_FT_FDB = 0X4, 55 FS_FT_SNIFFER_RX = 0X5, 56 FS_FT_SNIFFER_TX = 0X6, 57 FS_FT_MAX_TYPE = FS_FT_SNIFFER_TX, 58 }; 59 60 enum fs_flow_table_op_mod { 61 FS_FT_OP_MOD_NORMAL, 62 FS_FT_OP_MOD_LAG_DEMUX, 63 }; 64 65 enum fs_fte_status { 66 FS_FTE_STATUS_EXISTING = 1UL << 0, 67 }; 68 69 struct mlx5_flow_steering { 70 struct mlx5_core_dev *dev; 71 struct kmem_cache *fgs_cache; 72 struct kmem_cache *ftes_cache; 73 struct mlx5_flow_root_namespace *root_ns; 74 struct mlx5_flow_root_namespace *fdb_root_ns; 75 struct mlx5_flow_root_namespace **esw_egress_root_ns; 76 struct mlx5_flow_root_namespace **esw_ingress_root_ns; 77 struct mlx5_flow_root_namespace *sniffer_tx_root_ns; 78 struct mlx5_flow_root_namespace *sniffer_rx_root_ns; 79 struct mlx5_flow_root_namespace *egress_root_ns; 80 }; 81 82 struct fs_node { 83 struct list_head list; 84 struct list_head children; 85 enum fs_node_type type; 86 struct fs_node *parent; 87 struct fs_node *root; 88 /* lock the node for writing and traversing */ 89 struct rw_semaphore lock; 90 refcount_t refcount; 91 bool active; 92 void (*del_hw_func)(struct fs_node *); 93 void (*del_sw_func)(struct fs_node *); 94 atomic_t version; 95 }; 96 97 struct mlx5_flow_rule { 98 struct fs_node node; 99 struct mlx5_flow_destination dest_attr; 100 /* next_ft should be accessed under chain_lock and only of 101 * destination type is FWD_NEXT_fT. 102 */ 103 struct list_head next_ft; 104 u32 sw_action; 105 }; 106 107 struct mlx5_flow_handle { 108 int num_rules; 109 struct mlx5_flow_rule *rule[]; 110 }; 111 112 /* Type of children is mlx5_flow_group */ 113 struct mlx5_flow_table { 114 struct fs_node node; 115 u32 id; 116 u16 vport; 117 unsigned int max_fte; 118 unsigned int level; 119 enum fs_flow_table_type type; 120 enum fs_flow_table_op_mod op_mod; 121 struct { 122 bool active; 123 unsigned int required_groups; 124 unsigned int num_groups; 125 } autogroup; 126 /* Protect fwd_rules */ 127 struct mutex lock; 128 /* FWD rules that point on this flow table */ 129 struct list_head fwd_rules; 130 u32 flags; 131 struct rhltable fgs_hash; 132 }; 133 134 struct mlx5_fc_cache { 135 u64 packets; 136 u64 bytes; 137 u64 lastuse; 138 }; 139 140 struct mlx5_fc { 141 struct rb_node node; 142 struct list_head list; 143 144 /* last{packets,bytes} members are used when calculating the delta since 145 * last reading 146 */ 147 u64 lastpackets; 148 u64 lastbytes; 149 150 u32 id; 151 bool deleted; 152 bool aging; 153 154 struct mlx5_fc_cache cache ____cacheline_aligned_in_smp; 155 }; 156 157 struct mlx5_ft_underlay_qp { 158 struct list_head list; 159 u32 qpn; 160 }; 161 162 #define MLX5_FTE_MATCH_PARAM_RESERVED reserved_at_800 163 /* Calculate the fte_match_param length and without the reserved length. 164 * Make sure the reserved field is the last. 165 */ 166 #define MLX5_ST_SZ_DW_MATCH_PARAM \ 167 ((MLX5_BYTE_OFF(fte_match_param, MLX5_FTE_MATCH_PARAM_RESERVED) / sizeof(u32)) + \ 168 BUILD_BUG_ON_ZERO(MLX5_ST_SZ_BYTES(fte_match_param) != \ 169 MLX5_FLD_SZ_BYTES(fte_match_param, \ 170 MLX5_FTE_MATCH_PARAM_RESERVED) +\ 171 MLX5_BYTE_OFF(fte_match_param, \ 172 MLX5_FTE_MATCH_PARAM_RESERVED))) 173 174 /* Type of children is mlx5_flow_rule */ 175 struct fs_fte { 176 struct fs_node node; 177 u32 val[MLX5_ST_SZ_DW_MATCH_PARAM]; 178 u32 dests_size; 179 u32 index; 180 struct mlx5_flow_act action; 181 enum fs_fte_status status; 182 struct mlx5_fc *counter; 183 struct rhash_head hash; 184 }; 185 186 /* Type of children is mlx5_flow_table/namespace */ 187 struct fs_prio { 188 struct fs_node node; 189 unsigned int num_levels; 190 unsigned int start_level; 191 unsigned int prio; 192 unsigned int num_ft; 193 }; 194 195 /* Type of children is fs_prio */ 196 struct mlx5_flow_namespace { 197 /* parent == NULL => root ns */ 198 struct fs_node node; 199 }; 200 201 struct mlx5_flow_group_mask { 202 u8 match_criteria_enable; 203 u32 match_criteria[MLX5_ST_SZ_DW_MATCH_PARAM]; 204 }; 205 206 /* Type of children is fs_fte */ 207 struct mlx5_flow_group { 208 struct fs_node node; 209 struct mlx5_flow_group_mask mask; 210 u32 start_index; 211 u32 max_ftes; 212 struct ida fte_allocator; 213 u32 id; 214 struct rhashtable ftes_hash; 215 struct rhlist_head hash; 216 }; 217 218 struct mlx5_flow_root_namespace { 219 struct mlx5_flow_namespace ns; 220 enum fs_flow_table_type table_type; 221 struct mlx5_core_dev *dev; 222 struct mlx5_flow_table *root_ft; 223 /* Should be held when chaining flow tables */ 224 struct mutex chain_lock; 225 struct list_head underlay_qpns; 226 const struct mlx5_flow_cmds *cmds; 227 }; 228 229 int mlx5_init_fc_stats(struct mlx5_core_dev *dev); 230 void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev); 231 void mlx5_fc_queue_stats_work(struct mlx5_core_dev *dev, 232 struct delayed_work *dwork, 233 unsigned long delay); 234 void mlx5_fc_update_sampling_interval(struct mlx5_core_dev *dev, 235 unsigned long interval); 236 237 int mlx5_init_fs(struct mlx5_core_dev *dev); 238 void mlx5_cleanup_fs(struct mlx5_core_dev *dev); 239 240 #define fs_get_obj(v, _node) {v = container_of((_node), typeof(*v), node); } 241 242 #define fs_list_for_each_entry(pos, root) \ 243 list_for_each_entry(pos, root, node.list) 244 245 #define fs_list_for_each_entry_safe(pos, tmp, root) \ 246 list_for_each_entry_safe(pos, tmp, root, node.list) 247 248 #define fs_for_each_ns_or_ft_reverse(pos, prio) \ 249 list_for_each_entry_reverse(pos, &(prio)->node.children, list) 250 251 #define fs_for_each_ns_or_ft(pos, prio) \ 252 list_for_each_entry(pos, (&(prio)->node.children), list) 253 254 #define fs_for_each_prio(pos, ns) \ 255 fs_list_for_each_entry(pos, &(ns)->node.children) 256 257 #define fs_for_each_ns(pos, prio) \ 258 fs_list_for_each_entry(pos, &(prio)->node.children) 259 260 #define fs_for_each_ft(pos, prio) \ 261 fs_list_for_each_entry(pos, &(prio)->node.children) 262 263 #define fs_for_each_ft_safe(pos, tmp, prio) \ 264 fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children) 265 266 #define fs_for_each_fg(pos, ft) \ 267 fs_list_for_each_entry(pos, &(ft)->node.children) 268 269 #define fs_for_each_fte(pos, fg) \ 270 fs_list_for_each_entry(pos, &(fg)->node.children) 271 272 #define fs_for_each_dst(pos, fte) \ 273 fs_list_for_each_entry(pos, &(fte)->node.children) 274 275 #define MLX5_CAP_FLOWTABLE_TYPE(mdev, cap, type) ( \ 276 (type == FS_FT_NIC_RX) ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, cap) : \ 277 (type == FS_FT_ESW_EGRESS_ACL) ? MLX5_CAP_ESW_EGRESS_ACL(mdev, cap) : \ 278 (type == FS_FT_ESW_INGRESS_ACL) ? MLX5_CAP_ESW_INGRESS_ACL(mdev, cap) : \ 279 (type == FS_FT_FDB) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) : \ 280 (type == FS_FT_SNIFFER_RX) ? MLX5_CAP_FLOWTABLE_SNIFFER_RX(mdev, cap) : \ 281 (type == FS_FT_SNIFFER_TX) ? MLX5_CAP_FLOWTABLE_SNIFFER_TX(mdev, cap) : \ 282 (BUILD_BUG_ON_ZERO(FS_FT_SNIFFER_TX != FS_FT_MAX_TYPE))\ 283 ) 284 285 #endif 286
