net/mlx5: Address static checker warnings on non-constant initializers
[sfrench/cifs-2.6.git] / drivers / net / ethernet / mellanox / mlx5 / core / fs_core.h
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_ESW_EGRESS_ACL  = 0x2,
52         FS_FT_ESW_INGRESS_ACL = 0x3,
53         FS_FT_FDB             = 0X4,
54         FS_FT_SNIFFER_RX        = 0X5,
55         FS_FT_SNIFFER_TX        = 0X6,
56         FS_FT_MAX_TYPE = FS_FT_SNIFFER_TX,
57 };
58
59 enum fs_flow_table_op_mod {
60         FS_FT_OP_MOD_NORMAL,
61         FS_FT_OP_MOD_LAG_DEMUX,
62 };
63
64 enum fs_fte_status {
65         FS_FTE_STATUS_EXISTING = 1UL << 0,
66 };
67
68 struct mlx5_flow_steering {
69         struct mlx5_core_dev *dev;
70         struct kmem_cache               *fgs_cache;
71         struct kmem_cache               *ftes_cache;
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;
76         struct mlx5_flow_root_namespace *sniffer_tx_root_ns;
77         struct mlx5_flow_root_namespace *sniffer_rx_root_ns;
78 };
79
80 struct fs_node {
81         struct list_head        list;
82         struct list_head        children;
83         enum fs_node_type       type;
84         struct fs_node          *parent;
85         struct fs_node          *root;
86         /* lock the node for writing and traversing */
87         struct rw_semaphore     lock;
88         refcount_t              refcount;
89         bool                    active;
90         void                    (*del_hw_func)(struct fs_node *);
91         void                    (*del_sw_func)(struct fs_node *);
92         atomic_t                version;
93 };
94
95 struct mlx5_flow_rule {
96         struct fs_node                          node;
97         struct mlx5_flow_destination            dest_attr;
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;
103 };
104
105 struct mlx5_flow_handle {
106         int num_rules;
107         struct mlx5_flow_rule *rule[];
108 };
109
110 /* Type of children is mlx5_flow_group */
111 struct mlx5_flow_table {
112         struct fs_node                  node;
113         u32                             id;
114         u16                             vport;
115         unsigned int                    max_fte;
116         unsigned int                    level;
117         enum fs_flow_table_type         type;
118         enum fs_flow_table_op_mod       op_mod;
119         struct {
120                 bool                    active;
121                 unsigned int            required_groups;
122                 unsigned int            num_groups;
123         } autogroup;
124         /* Protect fwd_rules */
125         struct mutex                    lock;
126         /* FWD rules that point on this flow table */
127         struct list_head                fwd_rules;
128         u32                             flags;
129         struct rhltable                 fgs_hash;
130 };
131
132 struct mlx5_fc_cache {
133         u64 packets;
134         u64 bytes;
135         u64 lastuse;
136 };
137
138 struct mlx5_fc {
139         struct rb_node node;
140         struct list_head list;
141
142         /* last{packets,bytes} members are used when calculating the delta since
143          * last reading
144          */
145         u64 lastpackets;
146         u64 lastbytes;
147
148         u32 id;
149         bool deleted;
150         bool aging;
151
152         struct mlx5_fc_cache cache ____cacheline_aligned_in_smp;
153 };
154
155 struct mlx5_ft_underlay_qp {
156         struct list_head list;
157         u32 qpn;
158 };
159
160 #define MLX5_FTE_MATCH_PARAM_RESERVED   reserved_at_600
161 /* Calculate the fte_match_param length and without the reserved length.
162  * Make sure the reserved field is the last.
163  */
164 #define MLX5_ST_SZ_DW_MATCH_PARAM                                           \
165         ((MLX5_BYTE_OFF(fte_match_param, MLX5_FTE_MATCH_PARAM_RESERVED) / sizeof(u32)) + \
166          BUILD_BUG_ON_ZERO(MLX5_ST_SZ_BYTES(fte_match_param) !=              \
167                            MLX5_FLD_SZ_BYTES(fte_match_param,                \
168                                              MLX5_FTE_MATCH_PARAM_RESERVED) +\
169                            MLX5_BYTE_OFF(fte_match_param,                    \
170                                          MLX5_FTE_MATCH_PARAM_RESERVED)))
171
172 /* Type of children is mlx5_flow_rule */
173 struct fs_fte {
174         struct fs_node                  node;
175         u32                             val[MLX5_ST_SZ_DW_MATCH_PARAM];
176         u32                             dests_size;
177         u32                             flow_tag;
178         u32                             index;
179         u32                             action;
180         u32                             encap_id;
181         u32                             modify_id;
182         enum fs_fte_status              status;
183         struct mlx5_fc                  *counter;
184         struct rhash_head               hash;
185 };
186
187 /* Type of children is mlx5_flow_table/namespace */
188 struct fs_prio {
189         struct fs_node                  node;
190         unsigned int                    num_levels;
191         unsigned int                    start_level;
192         unsigned int                    prio;
193         unsigned int                    num_ft;
194 };
195
196 /* Type of children is fs_prio */
197 struct mlx5_flow_namespace {
198         /* parent == NULL => root ns */
199         struct  fs_node                 node;
200 };
201
202 struct mlx5_flow_group_mask {
203         u8      match_criteria_enable;
204         u32     match_criteria[MLX5_ST_SZ_DW_MATCH_PARAM];
205 };
206
207 /* Type of children is fs_fte */
208 struct mlx5_flow_group {
209         struct fs_node                  node;
210         struct mlx5_flow_group_mask     mask;
211         u32                             start_index;
212         u32                             max_ftes;
213         struct ida                      fte_allocator;
214         u32                             id;
215         struct rhashtable               ftes_hash;
216         struct rhlist_head              hash;
217 };
218
219 struct mlx5_flow_root_namespace {
220         struct mlx5_flow_namespace      ns;
221         enum   fs_flow_table_type       table_type;
222         struct mlx5_core_dev            *dev;
223         struct mlx5_flow_table          *root_ft;
224         /* Should be held when chaining flow tables */
225         struct mutex                    chain_lock;
226         struct list_head                underlay_qpns;
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 int mlx5_fc_query(struct mlx5_core_dev *dev, u16 id,
237                   u64 *packets, u64 *bytes);
238
239 int mlx5_init_fs(struct mlx5_core_dev *dev);
240 void mlx5_cleanup_fs(struct mlx5_core_dev *dev);
241
242 #define fs_get_obj(v, _node)  {v = container_of((_node), typeof(*v), node); }
243
244 #define fs_list_for_each_entry(pos, root)               \
245         list_for_each_entry(pos, root, node.list)
246
247 #define fs_list_for_each_entry_safe(pos, tmp, root)             \
248         list_for_each_entry_safe(pos, tmp, root, node.list)
249
250 #define fs_for_each_ns_or_ft_reverse(pos, prio)                         \
251         list_for_each_entry_reverse(pos, &(prio)->node.children, list)
252
253 #define fs_for_each_ns_or_ft(pos, prio)                                 \
254         list_for_each_entry(pos, (&(prio)->node.children), list)
255
256 #define fs_for_each_prio(pos, ns)                       \
257         fs_list_for_each_entry(pos, &(ns)->node.children)
258
259 #define fs_for_each_ns(pos, prio)                       \
260         fs_list_for_each_entry(pos, &(prio)->node.children)
261
262 #define fs_for_each_ft(pos, prio)                       \
263         fs_list_for_each_entry(pos, &(prio)->node.children)
264
265 #define fs_for_each_ft_safe(pos, tmp, prio)                     \
266         fs_list_for_each_entry_safe(pos, tmp, &(prio)->node.children)
267
268 #define fs_for_each_fg(pos, ft)                 \
269         fs_list_for_each_entry(pos, &(ft)->node.children)
270
271 #define fs_for_each_fte(pos, fg)                        \
272         fs_list_for_each_entry(pos, &(fg)->node.children)
273
274 #define fs_for_each_dst(pos, fte)                       \
275         fs_list_for_each_entry(pos, &(fte)->node.children)
276
277 #define MLX5_CAP_FLOWTABLE_TYPE(mdev, cap, type) (              \
278         (type == FS_FT_NIC_RX) ? MLX5_CAP_FLOWTABLE_NIC_RX(mdev, cap) :         \
279         (type == FS_FT_ESW_EGRESS_ACL) ? MLX5_CAP_ESW_EGRESS_ACL(mdev, cap) :           \
280         (type == FS_FT_ESW_INGRESS_ACL) ? MLX5_CAP_ESW_INGRESS_ACL(mdev, cap) :         \
281         (type == FS_FT_FDB) ? MLX5_CAP_ESW_FLOWTABLE_FDB(mdev, cap) :           \
282         (type == FS_FT_SNIFFER_RX) ? MLX5_CAP_FLOWTABLE_SNIFFER_RX(mdev, cap) :         \
283         (type == FS_FT_SNIFFER_TX) ? MLX5_CAP_FLOWTABLE_SNIFFER_TX(mdev, cap) :         \
284         (BUILD_BUG_ON_ZERO(FS_FT_SNIFFER_TX != FS_FT_MAX_TYPE))\
285         )
286
287 #endif