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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
dd8e1945 36#include <linux/refcount.h>
26a81453 37#include <linux/mlx5/fs.h>
0d235c3f 38#include <linux/rhashtable.h>
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39
40enum 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
49enum fs_flow_table_type {
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50 FS_FT_NIC_RX = 0x0,
51 FS_FT_ESW_EGRESS_ACL = 0x2,
52 FS_FT_ESW_INGRESS_ACL = 0x3,
53 FS_FT_FDB = 0X4,
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54 FS_FT_SNIFFER_RX = 0X5,
55 FS_FT_SNIFFER_TX = 0X6,
16f1c5bb 56 FS_FT_MAX_TYPE = FS_FT_SNIFFER_TX,
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57};
58
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59enum fs_flow_table_op_mod {
60 FS_FT_OP_MOD_NORMAL,
61 FS_FT_OP_MOD_LAG_DEMUX,
62};
63
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64enum fs_fte_status {
65 FS_FTE_STATUS_EXISTING = 1UL << 0,
66};
67
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68struct mlx5_flow_steering {
69 struct mlx5_core_dev *dev;
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70 struct kmem_cache *fgs_cache;
71 struct kmem_cache *ftes_cache;
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72 struct mlx5_flow_root_namespace *root_ns;
73 struct mlx5_flow_root_namespace *fdb_root_ns;
74 struct mlx5_flow_root_namespace *esw_egress_root_ns;
75 struct mlx5_flow_root_namespace *esw_ingress_root_ns;
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76 struct mlx5_flow_root_namespace *sniffer_tx_root_ns;
77 struct mlx5_flow_root_namespace *sniffer_rx_root_ns;
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78};
79
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80struct fs_node {
81 struct list_head list;
82 struct list_head children;
83 enum fs_node_type type;
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84 struct fs_node *parent;
85 struct fs_node *root;
86 /* lock the node for writing and traversing */
c7784b1c 87 struct rw_semaphore lock;
dd8e1945 88 refcount_t refcount;
19f100fe 89 bool active;
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90 void (*del_hw_func)(struct fs_node *);
91 void (*del_sw_func)(struct fs_node *);
92 atomic_t version;
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93};
94
95struct mlx5_flow_rule {
96 struct fs_node node;
97 struct mlx5_flow_destination dest_attr;
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98 /* next_ft should be accessed under chain_lock and only of
99 * destination type is FWD_NEXT_fT.
100 */
101 struct list_head next_ft;
102 u32 sw_action;
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103};
104
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105struct mlx5_flow_handle {
106 int num_rules;
107 struct mlx5_flow_rule *rule[];
108};
109
0c56b975 110/* Type of children is mlx5_flow_group */
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111struct mlx5_flow_table {
112 struct fs_node node;
113 u32 id;
efdc810b 114 u16 vport;
0c56b975 115 unsigned int max_fte;
5e1626c0 116 unsigned int level;
26a81453 117 enum fs_flow_table_type type;
aaff1bea 118 enum fs_flow_table_op_mod op_mod;
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119 struct {
120 bool active;
121 unsigned int required_groups;
f29508fc 122 unsigned int group_size;
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123 unsigned int num_groups;
124 } autogroup;
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125 /* Protect fwd_rules */
126 struct mutex lock;
127 /* FWD rules that point on this flow table */
128 struct list_head fwd_rules;
c9f1b073 129 u32 flags;
693c6883 130 struct rhltable fgs_hash;
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131};
132
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133struct mlx5_fc_cache {
134 u64 packets;
135 u64 bytes;
136 u64 lastuse;
137};
138
139struct mlx5_fc {
29cc6679 140 struct rb_node node;
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141 struct list_head list;
142
143 /* last{packets,bytes} members are used when calculating the delta since
144 * last reading
145 */
146 u64 lastpackets;
147 u64 lastbytes;
148
a8ffcc74 149 u32 id;
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150 bool deleted;
151 bool aging;
152
153 struct mlx5_fc_cache cache ____cacheline_aligned_in_smp;
154};
155
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156struct mlx5_ft_underlay_qp {
157 struct list_head list;
158 u32 qpn;
159};
160
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161#define MLX5_FTE_MATCH_PARAM_RESERVED reserved_at_600
162/* Calculate the fte_match_param length and without the reserved length.
163 * Make sure the reserved field is the last.
164 */
165#define MLX5_ST_SZ_DW_MATCH_PARAM \
166 ((MLX5_BYTE_OFF(fte_match_param, MLX5_FTE_MATCH_PARAM_RESERVED) / sizeof(u32)) + \
167 BUILD_BUG_ON_ZERO(MLX5_ST_SZ_BYTES(fte_match_param) != \
168 MLX5_FLD_SZ_BYTES(fte_match_param, \
169 MLX5_FTE_MATCH_PARAM_RESERVED) +\
170 MLX5_BYTE_OFF(fte_match_param, \
171 MLX5_FTE_MATCH_PARAM_RESERVED)))
172
0c56b975 173/* Type of children is mlx5_flow_rule */
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174struct fs_fte {
175 struct fs_node node;
667cb65a 176 u32 val[MLX5_ST_SZ_DW_MATCH_PARAM];
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177 u32 dests_size;
178 u32 flow_tag;
179 u32 index;
180 u32 action;
66958ed9 181 u32 encap_id;
2a69cb9f 182 u32 modify_id;
0c56b975 183 enum fs_fte_status status;
bd5251db 184 struct mlx5_fc *counter;
0d235c3f 185 struct rhash_head hash;
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186};
187
0c56b975 188/* Type of children is mlx5_flow_table/namespace */
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189struct fs_prio {
190 struct fs_node node;
a257b94a 191 unsigned int num_levels;
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192 unsigned int start_level;
193 unsigned int prio;
0c56b975 194 unsigned int num_ft;
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195};
196
0c56b975 197/* Type of children is fs_prio */
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198struct mlx5_flow_namespace {
199 /* parent == NULL => root ns */
200 struct fs_node node;
201};
202
203struct mlx5_flow_group_mask {
204 u8 match_criteria_enable;
667cb65a 205 u32 match_criteria[MLX5_ST_SZ_DW_MATCH_PARAM];
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206};
207
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208/* Type of children is fs_fte */
209struct mlx5_flow_group {
210 struct fs_node node;
211 struct mlx5_flow_group_mask mask;
212 u32 start_index;
213 u32 max_ftes;
75d1d187 214 struct ida fte_allocator;
0c56b975 215 u32 id;
0d235c3f 216 struct rhashtable ftes_hash;
693c6883 217 struct rhlist_head hash;
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218};
219
220struct mlx5_flow_root_namespace {
221 struct mlx5_flow_namespace ns;
222 enum fs_flow_table_type table_type;
223 struct mlx5_core_dev *dev;
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224 struct mlx5_flow_table *root_ft;
225 /* Should be held when chaining flow tables */
226 struct mutex chain_lock;
dae37456 227 struct list_head underlay_qpns;
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228};
229
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230int mlx5_init_fc_stats(struct mlx5_core_dev *dev);
231void mlx5_cleanup_fc_stats(struct mlx5_core_dev *dev);
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232void mlx5_fc_queue_stats_work(struct mlx5_core_dev *dev,
233 struct delayed_work *dwork,
234 unsigned long delay);
235void mlx5_fc_update_sampling_interval(struct mlx5_core_dev *dev,
236 unsigned long interval);
43a335e0 237
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238int mlx5_init_fs(struct mlx5_core_dev *dev);
239void mlx5_cleanup_fs(struct mlx5_core_dev *dev);
240
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241#define fs_get_obj(v, _node) {v = container_of((_node), typeof(*v), node); }
242
243#define fs_list_for_each_entry(pos, root) \
244 list_for_each_entry(pos, root, node.list)
245
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246#define fs_list_for_each_entry_safe(pos, tmp, root) \
247 list_for_each_entry_safe(pos, tmp, root, node.list)
248
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249#define fs_for_each_ns_or_ft_reverse(pos, prio) \
250 list_for_each_entry_reverse(pos, &(prio)->node.children, list)
251
252#define fs_for_each_ns_or_ft(pos, prio) \
253 list_for_each_entry(pos, (&(prio)->node.children), list)
254
255#define fs_for_each_prio(pos, ns) \
256 fs_list_for_each_entry(pos, &(ns)->node.children)
257
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258#define fs_for_each_ns(pos, prio) \
259 fs_list_for_each_entry(pos, &(prio)->node.children)
260
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261#define fs_for_each_ft(pos, prio) \
262 fs_list_for_each_entry(pos, &(prio)->node.children)
263
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264#define fs_for_each_ft_safe(pos, tmp, prio) \
265 fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children)
266
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267#define fs_for_each_fg(pos, ft) \
268 fs_list_for_each_entry(pos, &(ft)->node.children)
269
270#define fs_for_each_fte(pos, fg) \
271 fs_list_for_each_entry(pos, &(fg)->node.children)
272
273#define fs_for_each_dst(pos, fte) \
274 fs_list_for_each_entry(pos, &(fte)->node.children)
275
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276#define MLX5_CAP_FLOWTABLE_TYPE(mdev, cap, type) ( \
277 (type == FS_FT_NIC_RX) ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, cap) : \
278 (type == FS_FT_ESW_EGRESS_ACL) ? MLX5_CAP_ESW_EGRESS_ACL(mdev, cap) : \
279 (type == FS_FT_ESW_INGRESS_ACL) ? MLX5_CAP_ESW_INGRESS_ACL(mdev, cap) : \
280 (type == FS_FT_FDB) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) : \
281 (type == FS_FT_SNIFFER_RX) ? MLX5_CAP_FLOWTABLE_SNIFFER_RX(mdev, cap) : \
282 (type == FS_FT_SNIFFER_TX) ? MLX5_CAP_FLOWTABLE_SNIFFER_TX(mdev, cap) : \
283 (BUILD_BUG_ON_ZERO(FS_FT_SNIFFER_TX != FS_FT_MAX_TYPE))\
284 )
285
26a81453 286#endif