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:
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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
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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
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26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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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>
41 /* FS_TYPE_PRIO_CHAINS is a PRIO that will have namespaces only,
42 * and those are in parallel to one another when going over them to connect
43 * a new flow table. Meaning the last flow table in a TYPE_PRIO prio in one
44 * parallel namespace will not automatically connect to the first flow table
45 * found in any prio in any next namespace, but skip the entire containing
46 * TYPE_PRIO_CHAINS prio.
48 * This is used to implement tc chains, each chain of prios is a different
49 * namespace inside a containing TYPE_PRIO_CHAINS prio.
62 enum fs_flow_table_type
{
65 FS_FT_ESW_EGRESS_ACL
= 0x2,
66 FS_FT_ESW_INGRESS_ACL
= 0x3,
68 FS_FT_SNIFFER_RX
= 0X5,
69 FS_FT_SNIFFER_TX
= 0X6,
70 FS_FT_MAX_TYPE
= FS_FT_SNIFFER_TX
,
73 enum fs_flow_table_op_mod
{
75 FS_FT_OP_MOD_LAG_DEMUX
,
79 FS_FTE_STATUS_EXISTING
= 1UL << 0,
82 struct mlx5_flow_steering
{
83 struct mlx5_core_dev
*dev
;
84 struct kmem_cache
*fgs_cache
;
85 struct kmem_cache
*ftes_cache
;
86 struct mlx5_flow_root_namespace
*root_ns
;
87 struct mlx5_flow_root_namespace
*fdb_root_ns
;
88 struct mlx5_flow_namespace
**fdb_sub_ns
;
89 struct mlx5_flow_root_namespace
**esw_egress_root_ns
;
90 struct mlx5_flow_root_namespace
**esw_ingress_root_ns
;
91 struct mlx5_flow_root_namespace
*sniffer_tx_root_ns
;
92 struct mlx5_flow_root_namespace
*sniffer_rx_root_ns
;
93 struct mlx5_flow_root_namespace
*egress_root_ns
;
97 struct list_head list
;
98 struct list_head children
;
99 enum fs_node_type type
;
100 struct fs_node
*parent
;
101 struct fs_node
*root
;
102 /* lock the node for writing and traversing */
103 struct rw_semaphore lock
;
106 void (*del_hw_func
)(struct fs_node
*);
107 void (*del_sw_func
)(struct fs_node
*);
111 struct mlx5_flow_rule
{
113 struct mlx5_flow_destination dest_attr
;
114 /* next_ft should be accessed under chain_lock and only of
115 * destination type is FWD_NEXT_fT.
117 struct list_head next_ft
;
121 struct mlx5_flow_handle
{
123 struct mlx5_flow_rule
*rule
[];
126 /* Type of children is mlx5_flow_group */
127 struct mlx5_flow_table
{
131 unsigned int max_fte
;
133 enum fs_flow_table_type type
;
134 enum fs_flow_table_op_mod op_mod
;
137 unsigned int required_groups
;
138 unsigned int num_groups
;
140 /* Protect fwd_rules */
142 /* FWD rules that point on this flow table */
143 struct list_head fwd_rules
;
145 struct rhltable fgs_hash
;
148 struct mlx5_ft_underlay_qp
{
149 struct list_head list
;
153 #define MLX5_FTE_MATCH_PARAM_RESERVED reserved_at_800
154 /* Calculate the fte_match_param length and without the reserved length.
155 * Make sure the reserved field is the last.
157 #define MLX5_ST_SZ_DW_MATCH_PARAM \
158 ((MLX5_BYTE_OFF(fte_match_param, MLX5_FTE_MATCH_PARAM_RESERVED) / sizeof(u32)) + \
159 BUILD_BUG_ON_ZERO(MLX5_ST_SZ_BYTES(fte_match_param) != \
160 MLX5_FLD_SZ_BYTES(fte_match_param, \
161 MLX5_FTE_MATCH_PARAM_RESERVED) +\
162 MLX5_BYTE_OFF(fte_match_param, \
163 MLX5_FTE_MATCH_PARAM_RESERVED)))
165 /* Type of children is mlx5_flow_rule */
168 u32 val
[MLX5_ST_SZ_DW_MATCH_PARAM
];
171 struct mlx5_flow_act action
;
172 enum fs_fte_status status
;
173 struct mlx5_fc
*counter
;
174 struct rhash_head hash
;
178 /* Type of children is mlx5_flow_table/namespace */
181 unsigned int num_levels
;
182 unsigned int start_level
;
187 /* Type of children is fs_prio */
188 struct mlx5_flow_namespace
{
189 /* parent == NULL => root ns */
193 struct mlx5_flow_group_mask
{
194 u8 match_criteria_enable
;
195 u32 match_criteria
[MLX5_ST_SZ_DW_MATCH_PARAM
];
198 /* Type of children is fs_fte */
199 struct mlx5_flow_group
{
201 struct mlx5_flow_group_mask mask
;
204 struct ida fte_allocator
;
206 struct rhashtable ftes_hash
;
207 struct rhlist_head hash
;
210 struct mlx5_flow_root_namespace
{
211 struct mlx5_flow_namespace ns
;
212 enum fs_flow_table_type table_type
;
213 struct mlx5_core_dev
*dev
;
214 struct mlx5_flow_table
*root_ft
;
215 /* Should be held when chaining flow tables */
216 struct mutex chain_lock
;
217 struct list_head underlay_qpns
;
218 const struct mlx5_flow_cmds
*cmds
;
221 int mlx5_init_fc_stats(struct mlx5_core_dev
*dev
);
222 void mlx5_cleanup_fc_stats(struct mlx5_core_dev
*dev
);
223 void mlx5_fc_queue_stats_work(struct mlx5_core_dev
*dev
,
224 struct delayed_work
*dwork
,
225 unsigned long delay
);
226 void mlx5_fc_update_sampling_interval(struct mlx5_core_dev
*dev
,
227 unsigned long interval
);
229 int mlx5_init_fs(struct mlx5_core_dev
*dev
);
230 void mlx5_cleanup_fs(struct mlx5_core_dev
*dev
);
232 #define fs_get_obj(v, _node) {v = container_of((_node), typeof(*v), node); }
234 #define fs_list_for_each_entry(pos, root) \
235 list_for_each_entry(pos, root, node.list)
237 #define fs_list_for_each_entry_safe(pos, tmp, root) \
238 list_for_each_entry_safe(pos, tmp, root, node.list)
240 #define fs_for_each_ns_or_ft_reverse(pos, prio) \
241 list_for_each_entry_reverse(pos, &(prio)->node.children, list)
243 #define fs_for_each_ns_or_ft(pos, prio) \
244 list_for_each_entry(pos, (&(prio)->node.children), list)
246 #define fs_for_each_prio(pos, ns) \
247 fs_list_for_each_entry(pos, &(ns)->node.children)
249 #define fs_for_each_ns(pos, prio) \
250 fs_list_for_each_entry(pos, &(prio)->node.children)
252 #define fs_for_each_ft(pos, prio) \
253 fs_list_for_each_entry(pos, &(prio)->node.children)
255 #define fs_for_each_ft_safe(pos, tmp, prio) \
256 fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children)
258 #define fs_for_each_fg(pos, ft) \
259 fs_list_for_each_entry(pos, &(ft)->node.children)
261 #define fs_for_each_fte(pos, fg) \
262 fs_list_for_each_entry(pos, &(fg)->node.children)
264 #define fs_for_each_dst(pos, fte) \
265 fs_list_for_each_entry(pos, &(fte)->node.children)
267 #define MLX5_CAP_FLOWTABLE_TYPE(mdev, cap, type) ( \
268 (type == FS_FT_NIC_RX) ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, cap) : \
269 (type == FS_FT_ESW_EGRESS_ACL) ? MLX5_CAP_ESW_EGRESS_ACL(mdev, cap) : \
270 (type == FS_FT_ESW_INGRESS_ACL) ? MLX5_CAP_ESW_INGRESS_ACL(mdev, cap) : \
271 (type == FS_FT_FDB) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) : \
272 (type == FS_FT_SNIFFER_RX) ? MLX5_CAP_FLOWTABLE_SNIFFER_RX(mdev, cap) : \
273 (type == FS_FT_SNIFFER_TX) ? MLX5_CAP_FLOWTABLE_SNIFFER_TX(mdev, cap) : \
274 (BUILD_BUG_ON_ZERO(FS_FT_SNIFFER_TX != FS_FT_MAX_TYPE))\