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_
34 #define _MLX5_FS_
35
36 #include <linux/mlx5/driver.h>
37 #include <linux/mlx5/mlx5_ifc.h>
38
39 #define MLX5_FS_DEFAULT_FLOW_TAG 0x0
40
41 enum {
42 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO = 1 << 16,
43 MLX5_FLOW_CONTEXT_ACTION_ENCRYPT = 1 << 17,
44 MLX5_FLOW_CONTEXT_ACTION_DECRYPT = 1 << 18,
45 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS = 1 << 19,
46 };
47
48 enum {
49 MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT = BIT(0),
50 MLX5_FLOW_TABLE_TUNNEL_EN_DECAP = BIT(1),
51 MLX5_FLOW_TABLE_TERMINATION = BIT(2),
52 MLX5_FLOW_TABLE_UNMANAGED = BIT(3),
53 };
54
55 #define LEFTOVERS_RULE_NUM 2
build_leftovers_ft_param(int * priority,int * n_ent,int * n_grp)56 static inline void build_leftovers_ft_param(int *priority,
57 int *n_ent,
58 int *n_grp)
59 {
60 *priority = 0; /* Priority of leftovers_prio-0 */
61 *n_ent = LEFTOVERS_RULE_NUM;
62 *n_grp = LEFTOVERS_RULE_NUM;
63 }
64
65 enum mlx5_flow_namespace_type {
66 MLX5_FLOW_NAMESPACE_BYPASS,
67 MLX5_FLOW_NAMESPACE_LAG,
68 MLX5_FLOW_NAMESPACE_OFFLOADS,
69 MLX5_FLOW_NAMESPACE_ETHTOOL,
70 MLX5_FLOW_NAMESPACE_KERNEL,
71 MLX5_FLOW_NAMESPACE_LEFTOVERS,
72 MLX5_FLOW_NAMESPACE_ANCHOR,
73 MLX5_FLOW_NAMESPACE_FDB,
74 MLX5_FLOW_NAMESPACE_ESW_EGRESS,
75 MLX5_FLOW_NAMESPACE_ESW_INGRESS,
76 MLX5_FLOW_NAMESPACE_SNIFFER_RX,
77 MLX5_FLOW_NAMESPACE_SNIFFER_TX,
78 MLX5_FLOW_NAMESPACE_EGRESS,
79 MLX5_FLOW_NAMESPACE_EGRESS_KERNEL,
80 MLX5_FLOW_NAMESPACE_RDMA_RX,
81 MLX5_FLOW_NAMESPACE_RDMA_RX_KERNEL,
82 MLX5_FLOW_NAMESPACE_RDMA_TX,
83 };
84
85 enum {
86 FDB_BYPASS_PATH,
87 FDB_TC_OFFLOAD,
88 FDB_FT_OFFLOAD,
89 FDB_SLOW_PATH,
90 FDB_PER_VPORT,
91 };
92
93 struct mlx5_pkt_reformat;
94 struct mlx5_modify_hdr;
95 struct mlx5_flow_table;
96 struct mlx5_flow_group;
97 struct mlx5_flow_namespace;
98 struct mlx5_flow_handle;
99
100 enum {
101 FLOW_CONTEXT_HAS_TAG = BIT(0),
102 };
103
104 struct mlx5_flow_context {
105 u32 flags;
106 u32 flow_tag;
107 u32 flow_source;
108 };
109
110 struct mlx5_flow_spec {
111 u8 match_criteria_enable;
112 u32 match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
113 u32 match_value[MLX5_ST_SZ_DW(fte_match_param)];
114 struct mlx5_flow_context flow_context;
115 };
116
117 enum {
118 MLX5_FLOW_DEST_VPORT_VHCA_ID = BIT(0),
119 MLX5_FLOW_DEST_VPORT_REFORMAT_ID = BIT(1),
120 };
121
122 struct mlx5_flow_destination {
123 enum mlx5_flow_destination_type type;
124 union {
125 u32 tir_num;
126 u32 ft_num;
127 struct mlx5_flow_table *ft;
128 u32 counter_id;
129 struct {
130 u16 num;
131 u16 vhca_id;
132 struct mlx5_pkt_reformat *pkt_reformat;
133 u8 flags;
134 } vport;
135 };
136 };
137
138 struct mod_hdr_tbl {
139 struct mutex lock; /* protects hlist */
140 DECLARE_HASHTABLE(hlist, 8);
141 };
142
143 struct mlx5_flow_namespace *
144 mlx5_get_fdb_sub_ns(struct mlx5_core_dev *dev, int n);
145 struct mlx5_flow_namespace *
146 mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
147 enum mlx5_flow_namespace_type type);
148 struct mlx5_flow_namespace *
149 mlx5_get_flow_vport_acl_namespace(struct mlx5_core_dev *dev,
150 enum mlx5_flow_namespace_type type,
151 int vport);
152
153 struct mlx5_flow_table_attr {
154 int prio;
155 int max_fte;
156 u32 level;
157 u32 flags;
158 struct mlx5_flow_table *next_ft;
159
160 struct {
161 int max_num_groups;
162 int num_reserved_entries;
163 } autogroup;
164 };
165
166 struct mlx5_flow_table *
167 mlx5_create_flow_table(struct mlx5_flow_namespace *ns,
168 struct mlx5_flow_table_attr *ft_attr);
169
170 struct mlx5_flow_table *
171 mlx5_create_auto_grouped_flow_table(struct mlx5_flow_namespace *ns,
172 struct mlx5_flow_table_attr *ft_attr);
173
174 struct mlx5_flow_table *
175 mlx5_create_vport_flow_table(struct mlx5_flow_namespace *ns,
176 int prio,
177 int num_flow_table_entries,
178 u32 level, u16 vport);
179 struct mlx5_flow_table *mlx5_create_lag_demux_flow_table(
180 struct mlx5_flow_namespace *ns,
181 int prio, u32 level);
182 int mlx5_destroy_flow_table(struct mlx5_flow_table *ft);
183
184 /* inbox should be set with the following values:
185 * start_flow_index
186 * end_flow_index
187 * match_criteria_enable
188 * match_criteria
189 */
190 struct mlx5_flow_group *
191 mlx5_create_flow_group(struct mlx5_flow_table *ft, u32 *in);
192 void mlx5_destroy_flow_group(struct mlx5_flow_group *fg);
193
194 struct mlx5_fs_vlan {
195 u16 ethtype;
196 u16 vid;
197 u8 prio;
198 };
199
200 #define MLX5_FS_VLAN_DEPTH 2
201
202 enum {
203 FLOW_ACT_NO_APPEND = BIT(0),
204 FLOW_ACT_IGNORE_FLOW_LEVEL = BIT(1),
205 };
206
207 struct mlx5_flow_act {
208 u32 action;
209 struct mlx5_modify_hdr *modify_hdr;
210 struct mlx5_pkt_reformat *pkt_reformat;
211 union {
212 u32 ipsec_obj_id;
213 uintptr_t esp_id;
214 };
215 u32 flags;
216 struct mlx5_fs_vlan vlan[MLX5_FS_VLAN_DEPTH];
217 struct ib_counters *counters;
218 };
219
220 #define MLX5_DECLARE_FLOW_ACT(name) \
221 struct mlx5_flow_act name = { .action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,\
222 .flags = 0, }
223
224 /* Single destination per rule.
225 * Group ID is implied by the match criteria.
226 */
227 struct mlx5_flow_handle *
228 mlx5_add_flow_rules(struct mlx5_flow_table *ft,
229 const struct mlx5_flow_spec *spec,
230 struct mlx5_flow_act *flow_act,
231 struct mlx5_flow_destination *dest,
232 int num_dest);
233 void mlx5_del_flow_rules(struct mlx5_flow_handle *fr);
234
235 int mlx5_modify_rule_destination(struct mlx5_flow_handle *handler,
236 struct mlx5_flow_destination *new_dest,
237 struct mlx5_flow_destination *old_dest);
238
239 struct mlx5_fc *mlx5_fc_create(struct mlx5_core_dev *dev, bool aging);
240 void mlx5_fc_destroy(struct mlx5_core_dev *dev, struct mlx5_fc *counter);
241 u64 mlx5_fc_query_lastuse(struct mlx5_fc *counter);
242 void mlx5_fc_query_cached(struct mlx5_fc *counter,
243 u64 *bytes, u64 *packets, u64 *lastuse);
244 int mlx5_fc_query(struct mlx5_core_dev *dev, struct mlx5_fc *counter,
245 u64 *packets, u64 *bytes);
246 u32 mlx5_fc_id(struct mlx5_fc *counter);
247
248 int mlx5_fs_add_rx_underlay_qpn(struct mlx5_core_dev *dev, u32 underlay_qpn);
249 int mlx5_fs_remove_rx_underlay_qpn(struct mlx5_core_dev *dev, u32 underlay_qpn);
250
251 struct mlx5_modify_hdr *mlx5_modify_header_alloc(struct mlx5_core_dev *dev,
252 u8 ns_type, u8 num_actions,
253 void *modify_actions);
254 void mlx5_modify_header_dealloc(struct mlx5_core_dev *dev,
255 struct mlx5_modify_hdr *modify_hdr);
256
257 struct mlx5_pkt_reformat *mlx5_packet_reformat_alloc(struct mlx5_core_dev *dev,
258 int reformat_type,
259 size_t size,
260 void *reformat_data,
261 enum mlx5_flow_namespace_type ns_type);
262 void mlx5_packet_reformat_dealloc(struct mlx5_core_dev *dev,
263 struct mlx5_pkt_reformat *reformat);
264
265 #endif
266