2 * Copyright (c) 2015, Mellanox Technologies. All rights reserved.
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:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
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.
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
33 #ifndef _MLX5_FS_CORE_
34 #define _MLX5_FS_CORE_
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>
42 struct mlx5_modify_hdr {
43 enum mlx5_flow_namespace_type ns_type;
45 struct mlx5_fs_dr_action action;
50 struct mlx5_pkt_reformat {
51 enum mlx5_flow_namespace_type ns_type;
52 int reformat_type; /* from mlx5_ifc */
54 struct mlx5_fs_dr_action action;
59 /* FS_TYPE_PRIO_CHAINS is a PRIO that will have namespaces only,
60 * and those are in parallel to one another when going over them to connect
61 * a new flow table. Meaning the last flow table in a TYPE_PRIO prio in one
62 * parallel namespace will not automatically connect to the first flow table
63 * found in any prio in any next namespace, but skip the entire containing
64 * TYPE_PRIO_CHAINS prio.
66 * This is used to implement tc chains, each chain of prios is a different
67 * namespace inside a containing TYPE_PRIO_CHAINS prio.
80 enum fs_flow_table_type {
83 FS_FT_ESW_EGRESS_ACL = 0x2,
84 FS_FT_ESW_INGRESS_ACL = 0x3,
86 FS_FT_SNIFFER_RX = 0X5,
87 FS_FT_SNIFFER_TX = 0X6,
89 FS_FT_MAX_TYPE = FS_FT_RDMA_RX,
92 enum fs_flow_table_op_mod {
94 FS_FT_OP_MOD_LAG_DEMUX,
98 FS_FTE_STATUS_EXISTING = 1UL << 0,
101 enum mlx5_flow_steering_mode {
102 MLX5_FLOW_STEERING_MODE_DMFS,
103 MLX5_FLOW_STEERING_MODE_SMFS
106 struct mlx5_flow_steering {
107 struct mlx5_core_dev *dev;
108 enum mlx5_flow_steering_mode mode;
109 struct kmem_cache *fgs_cache;
110 struct kmem_cache *ftes_cache;
111 struct mlx5_flow_root_namespace *root_ns;
112 struct mlx5_flow_root_namespace *fdb_root_ns;
113 struct mlx5_flow_namespace **fdb_sub_ns;
114 struct mlx5_flow_root_namespace **esw_egress_root_ns;
115 struct mlx5_flow_root_namespace **esw_ingress_root_ns;
116 struct mlx5_flow_root_namespace *sniffer_tx_root_ns;
117 struct mlx5_flow_root_namespace *sniffer_rx_root_ns;
118 struct mlx5_flow_root_namespace *rdma_rx_root_ns;
119 struct mlx5_flow_root_namespace *egress_root_ns;
123 struct list_head list;
124 struct list_head children;
125 enum fs_node_type type;
126 struct fs_node *parent;
127 struct fs_node *root;
128 /* lock the node for writing and traversing */
129 struct rw_semaphore lock;
132 void (*del_hw_func)(struct fs_node *);
133 void (*del_sw_func)(struct fs_node *);
137 struct mlx5_flow_rule {
139 struct mlx5_flow_destination dest_attr;
140 /* next_ft should be accessed under chain_lock and only of
141 * destination type is FWD_NEXT_fT.
143 struct list_head next_ft;
147 struct mlx5_flow_handle {
149 struct mlx5_flow_rule *rule[];
152 /* Type of children is mlx5_flow_group */
153 struct mlx5_flow_table {
155 struct mlx5_fs_dr_table fs_dr_table;
158 unsigned int max_fte;
160 enum fs_flow_table_type type;
161 enum fs_flow_table_op_mod op_mod;
164 unsigned int required_groups;
165 unsigned int group_size;
166 unsigned int num_groups;
168 /* Protect fwd_rules */
170 /* FWD rules that point on this flow table */
171 struct list_head fwd_rules;
173 struct rhltable fgs_hash;
174 enum mlx5_flow_table_miss_action def_miss_action;
177 struct mlx5_ft_underlay_qp {
178 struct list_head list;
182 #define MLX5_FTE_MATCH_PARAM_RESERVED reserved_at_a00
183 /* Calculate the fte_match_param length and without the reserved length.
184 * Make sure the reserved field is the last.
186 #define MLX5_ST_SZ_DW_MATCH_PARAM \
187 ((MLX5_BYTE_OFF(fte_match_param, MLX5_FTE_MATCH_PARAM_RESERVED) / sizeof(u32)) + \
188 BUILD_BUG_ON_ZERO(MLX5_ST_SZ_BYTES(fte_match_param) != \
189 MLX5_FLD_SZ_BYTES(fte_match_param, \
190 MLX5_FTE_MATCH_PARAM_RESERVED) +\
191 MLX5_BYTE_OFF(fte_match_param, \
192 MLX5_FTE_MATCH_PARAM_RESERVED)))
194 /* Type of children is mlx5_flow_rule */
197 struct mlx5_fs_dr_rule fs_dr_rule;
198 u32 val[MLX5_ST_SZ_DW_MATCH_PARAM];
201 struct mlx5_flow_context flow_context;
202 struct mlx5_flow_act action;
203 enum fs_fte_status status;
204 struct mlx5_fc *counter;
205 struct rhash_head hash;
209 /* Type of children is mlx5_flow_table/namespace */
212 unsigned int num_levels;
213 unsigned int start_level;
218 /* Type of children is fs_prio */
219 struct mlx5_flow_namespace {
220 /* parent == NULL => root ns */
222 enum mlx5_flow_table_miss_action def_miss_action;
225 struct mlx5_flow_group_mask {
226 u8 match_criteria_enable;
227 u32 match_criteria[MLX5_ST_SZ_DW_MATCH_PARAM];
230 /* Type of children is fs_fte */
231 struct mlx5_flow_group {
233 struct mlx5_fs_dr_matcher fs_dr_matcher;
234 struct mlx5_flow_group_mask mask;
237 struct ida fte_allocator;
239 struct rhashtable ftes_hash;
240 struct rhlist_head hash;
243 struct mlx5_flow_root_namespace {
244 struct mlx5_flow_namespace ns;
245 enum mlx5_flow_steering_mode mode;
246 struct mlx5_fs_dr_domain fs_dr_domain;
247 enum fs_flow_table_type table_type;
248 struct mlx5_core_dev *dev;
249 struct mlx5_flow_table *root_ft;
250 /* Should be held when chaining flow tables */
251 struct mutex chain_lock;
252 struct list_head underlay_qpns;
253 const struct mlx5_flow_cmds *cmds;
256 int mlx5_init_fc_stats(struct mlx5_core_dev *dev);
257 void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev);
258 void mlx5_fc_queue_stats_work(struct mlx5_core_dev *dev,
259 struct delayed_work *dwork,
260 unsigned long delay);
261 void mlx5_fc_update_sampling_interval(struct mlx5_core_dev *dev,
262 unsigned long interval);
264 const struct mlx5_flow_cmds *mlx5_fs_cmd_get_fw_cmds(void);
266 int mlx5_flow_namespace_set_peer(struct mlx5_flow_root_namespace *ns,
267 struct mlx5_flow_root_namespace *peer_ns);
269 int mlx5_flow_namespace_set_mode(struct mlx5_flow_namespace *ns,
270 enum mlx5_flow_steering_mode mode);
272 int mlx5_init_fs(struct mlx5_core_dev *dev);
273 void mlx5_cleanup_fs(struct mlx5_core_dev *dev);
275 #define fs_get_obj(v, _node) {v = container_of((_node), typeof(*v), node); }
277 #define fs_list_for_each_entry(pos, root) \
278 list_for_each_entry(pos, root, node.list)
280 #define fs_list_for_each_entry_safe(pos, tmp, root) \
281 list_for_each_entry_safe(pos, tmp, root, node.list)
283 #define fs_for_each_ns_or_ft_reverse(pos, prio) \
284 list_for_each_entry_reverse(pos, &(prio)->node.children, list)
286 #define fs_for_each_ns_or_ft(pos, prio) \
287 list_for_each_entry(pos, (&(prio)->node.children), list)
289 #define fs_for_each_prio(pos, ns) \
290 fs_list_for_each_entry(pos, &(ns)->node.children)
292 #define fs_for_each_ns(pos, prio) \
293 fs_list_for_each_entry(pos, &(prio)->node.children)
295 #define fs_for_each_ft(pos, prio) \
296 fs_list_for_each_entry(pos, &(prio)->node.children)
298 #define fs_for_each_ft_safe(pos, tmp, prio) \
299 fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children)
301 #define fs_for_each_fg(pos, ft) \
302 fs_list_for_each_entry(pos, &(ft)->node.children)
304 #define fs_for_each_fte(pos, fg) \
305 fs_list_for_each_entry(pos, &(fg)->node.children)
307 #define fs_for_each_dst(pos, fte) \
308 fs_list_for_each_entry(pos, &(fte)->node.children)
310 #define MLX5_CAP_FLOWTABLE_TYPE(mdev, cap, type) ( \
311 (type == FS_FT_NIC_RX) ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, cap) : \
312 (type == FS_FT_ESW_EGRESS_ACL) ? MLX5_CAP_ESW_EGRESS_ACL(mdev, cap) : \
313 (type == FS_FT_ESW_INGRESS_ACL) ? MLX5_CAP_ESW_INGRESS_ACL(mdev, cap) : \
314 (type == FS_FT_FDB) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) : \
315 (type == FS_FT_SNIFFER_RX) ? MLX5_CAP_FLOWTABLE_SNIFFER_RX(mdev, cap) : \
316 (type == FS_FT_SNIFFER_TX) ? MLX5_CAP_FLOWTABLE_SNIFFER_TX(mdev, cap) : \
317 (type == FS_FT_RDMA_RX) ? MLX5_CAP_FLOWTABLE_RDMA_RX(mdev, cap) : \
318 (BUILD_BUG_ON_ZERO(FS_FT_RDMA_RX != FS_FT_MAX_TYPE))\