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 #define MLX5_SET_CFG(p, f, v) MLX5_SET(create_flow_group_in, p, f, v)
42 
43 enum mlx5_flow_destination_type {
44 	MLX5_FLOW_DESTINATION_TYPE_NONE,
45 	MLX5_FLOW_DESTINATION_TYPE_VPORT,
46 	MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE,
47 	MLX5_FLOW_DESTINATION_TYPE_TIR,
48 	MLX5_FLOW_DESTINATION_TYPE_FLOW_SAMPLER,
49 	MLX5_FLOW_DESTINATION_TYPE_UPLINK,
50 	MLX5_FLOW_DESTINATION_TYPE_PORT,
51 	MLX5_FLOW_DESTINATION_TYPE_COUNTER,
52 	MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM,
53 	MLX5_FLOW_DESTINATION_TYPE_RANGE,
54 	MLX5_FLOW_DESTINATION_TYPE_TABLE_TYPE,
55 };
56 
57 enum {
58 	MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO	= 1 << 16,
59 	MLX5_FLOW_CONTEXT_ACTION_ENCRYPT	= 1 << 17,
60 	MLX5_FLOW_CONTEXT_ACTION_DECRYPT	= 1 << 18,
61 	MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS	= 1 << 19,
62 };
63 
64 enum {
65 	MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT = BIT(0),
66 	MLX5_FLOW_TABLE_TUNNEL_EN_DECAP = BIT(1),
67 	MLX5_FLOW_TABLE_TERMINATION = BIT(2),
68 	MLX5_FLOW_TABLE_UNMANAGED = BIT(3),
69 	MLX5_FLOW_TABLE_OTHER_VPORT = BIT(4),
70 	MLX5_FLOW_TABLE_UPLINK_VPORT = BIT(5),
71 };
72 
73 #define LEFTOVERS_RULE_NUM	 2
build_leftovers_ft_param(int * priority,int * n_ent,int * n_grp)74 static inline void build_leftovers_ft_param(int *priority,
75 					    int *n_ent,
76 					    int *n_grp)
77 {
78 	*priority = 0; /* Priority of leftovers_prio-0 */
79 	*n_ent = LEFTOVERS_RULE_NUM;
80 	*n_grp = LEFTOVERS_RULE_NUM;
81 }
82 
83 enum mlx5_flow_namespace_type {
84 	MLX5_FLOW_NAMESPACE_BYPASS,
85 	MLX5_FLOW_NAMESPACE_KERNEL_RX_MACSEC,
86 	MLX5_FLOW_NAMESPACE_LAG,
87 	MLX5_FLOW_NAMESPACE_OFFLOADS,
88 	MLX5_FLOW_NAMESPACE_ETHTOOL,
89 	MLX5_FLOW_NAMESPACE_KERNEL,
90 	MLX5_FLOW_NAMESPACE_LEFTOVERS,
91 	MLX5_FLOW_NAMESPACE_ANCHOR,
92 	MLX5_FLOW_NAMESPACE_FDB_BYPASS,
93 	MLX5_FLOW_NAMESPACE_FDB,
94 	MLX5_FLOW_NAMESPACE_ESW_EGRESS,
95 	MLX5_FLOW_NAMESPACE_ESW_INGRESS,
96 	MLX5_FLOW_NAMESPACE_SNIFFER_RX,
97 	MLX5_FLOW_NAMESPACE_SNIFFER_TX,
98 	MLX5_FLOW_NAMESPACE_EGRESS,
99 	MLX5_FLOW_NAMESPACE_EGRESS_IPSEC,
100 	MLX5_FLOW_NAMESPACE_EGRESS_MACSEC,
101 	MLX5_FLOW_NAMESPACE_RDMA_RX,
102 	MLX5_FLOW_NAMESPACE_RDMA_RX_KERNEL,
103 	MLX5_FLOW_NAMESPACE_RDMA_TX,
104 	MLX5_FLOW_NAMESPACE_PORT_SEL,
105 	MLX5_FLOW_NAMESPACE_RDMA_RX_COUNTERS,
106 	MLX5_FLOW_NAMESPACE_RDMA_TX_COUNTERS,
107 	MLX5_FLOW_NAMESPACE_RDMA_RX_IPSEC,
108 	MLX5_FLOW_NAMESPACE_RDMA_TX_IPSEC,
109 	MLX5_FLOW_NAMESPACE_RDMA_RX_MACSEC,
110 	MLX5_FLOW_NAMESPACE_RDMA_TX_MACSEC,
111 };
112 
113 enum {
114 	FDB_BYPASS_PATH,
115 	FDB_CRYPTO_INGRESS,
116 	FDB_TC_OFFLOAD,
117 	FDB_FT_OFFLOAD,
118 	FDB_TC_MISS,
119 	FDB_BR_OFFLOAD,
120 	FDB_SLOW_PATH,
121 	FDB_CRYPTO_EGRESS,
122 	FDB_PER_VPORT,
123 };
124 
125 struct mlx5_pkt_reformat;
126 struct mlx5_modify_hdr;
127 struct mlx5_flow_definer;
128 struct mlx5_flow_table;
129 struct mlx5_flow_group;
130 struct mlx5_flow_namespace;
131 struct mlx5_flow_handle;
132 
133 enum {
134 	FLOW_CONTEXT_HAS_TAG = BIT(0),
135 	FLOW_CONTEXT_UPLINK_HAIRPIN_EN = BIT(1),
136 };
137 
138 struct mlx5_flow_context {
139 	u32 flags;
140 	u32 flow_tag;
141 	u32 flow_source;
142 };
143 
144 struct mlx5_flow_spec {
145 	u8   match_criteria_enable;
146 	u32  match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
147 	u32  match_value[MLX5_ST_SZ_DW(fte_match_param)];
148 	struct mlx5_flow_context flow_context;
149 };
150 
151 enum {
152 	MLX5_FLOW_DEST_VPORT_VHCA_ID      = BIT(0),
153 	MLX5_FLOW_DEST_VPORT_REFORMAT_ID  = BIT(1),
154 };
155 
156 enum mlx5_flow_dest_range_field {
157 	MLX5_FLOW_DEST_RANGE_FIELD_PKT_LEN = 0,
158 };
159 
160 struct mlx5_flow_destination {
161 	enum mlx5_flow_destination_type	type;
162 	union {
163 		u32			tir_num;
164 		u32			ft_num;
165 		struct mlx5_flow_table	*ft;
166 		u32			counter_id;
167 		struct {
168 			u16		num;
169 			u16		vhca_id;
170 			struct mlx5_pkt_reformat *pkt_reformat;
171 			u8		flags;
172 		} vport;
173 		struct {
174 			struct mlx5_flow_table         *hit_ft;
175 			struct mlx5_flow_table         *miss_ft;
176 			enum mlx5_flow_dest_range_field field;
177 			u32                             min;
178 			u32                             max;
179 		} range;
180 		u32			sampler_id;
181 	};
182 };
183 
184 struct mod_hdr_tbl {
185 	struct mutex lock; /* protects hlist */
186 	DECLARE_HASHTABLE(hlist, 8);
187 };
188 
189 struct mlx5_flow_namespace *
190 mlx5_get_fdb_sub_ns(struct mlx5_core_dev *dev, int n);
191 struct mlx5_flow_namespace *
192 mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
193 			enum mlx5_flow_namespace_type type);
194 struct mlx5_flow_namespace *
195 mlx5_get_flow_vport_acl_namespace(struct mlx5_core_dev *dev,
196 				  enum mlx5_flow_namespace_type type,
197 				  int vport);
198 
199 struct mlx5_flow_table_attr {
200 	int prio;
201 	int max_fte;
202 	u32 level;
203 	u32 flags;
204 	u16 uid;
205 	struct mlx5_flow_table *next_ft;
206 
207 	struct {
208 		int max_num_groups;
209 		int num_reserved_entries;
210 	} autogroup;
211 };
212 
213 struct mlx5_flow_table *
214 mlx5_create_flow_table(struct mlx5_flow_namespace *ns,
215 		       struct mlx5_flow_table_attr *ft_attr);
216 
217 struct mlx5_flow_table *
218 mlx5_create_auto_grouped_flow_table(struct mlx5_flow_namespace *ns,
219 				    struct mlx5_flow_table_attr *ft_attr);
220 
221 struct mlx5_flow_table *
222 mlx5_create_vport_flow_table(struct mlx5_flow_namespace *ns,
223 			     struct mlx5_flow_table_attr *ft_attr, u16 vport);
224 struct mlx5_flow_table *mlx5_create_lag_demux_flow_table(
225 					       struct mlx5_flow_namespace *ns,
226 					       int prio, u32 level);
227 int mlx5_destroy_flow_table(struct mlx5_flow_table *ft);
228 
229 /* inbox should be set with the following values:
230  * start_flow_index
231  * end_flow_index
232  * match_criteria_enable
233  * match_criteria
234  */
235 struct mlx5_flow_group *
236 mlx5_create_flow_group(struct mlx5_flow_table *ft, u32 *in);
237 void mlx5_destroy_flow_group(struct mlx5_flow_group *fg);
238 
239 struct mlx5_exe_aso {
240 	u32 object_id;
241 	u8 type;
242 	u8 return_reg_id;
243 	union {
244 		u32 ctrl_data;
245 		struct {
246 			u8 meter_idx;
247 			u8 init_color;
248 		} flow_meter;
249 	};
250 };
251 
252 struct mlx5_fs_vlan {
253         u16 ethtype;
254         u16 vid;
255         u8  prio;
256 };
257 
258 #define MLX5_FS_VLAN_DEPTH	2
259 
260 enum {
261 	FLOW_ACT_NO_APPEND = BIT(0),
262 	FLOW_ACT_IGNORE_FLOW_LEVEL = BIT(1),
263 };
264 
265 struct mlx5_flow_act {
266 	u32 action;
267 	struct mlx5_modify_hdr  *modify_hdr;
268 	struct mlx5_pkt_reformat *pkt_reformat;
269 	struct mlx5_flow_act_crypto_params {
270 		u8 type;
271 		u32 obj_id;
272 	} crypto;
273 	u32 flags;
274 	struct mlx5_fs_vlan vlan[MLX5_FS_VLAN_DEPTH];
275 	struct ib_counters *counters;
276 	struct mlx5_flow_group *fg;
277 	struct mlx5_exe_aso exe_aso;
278 };
279 
280 #define MLX5_DECLARE_FLOW_ACT(name) \
281 	struct mlx5_flow_act name = { .action = MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,\
282 				      .flags =  0, }
283 
284 /* Single destination per rule.
285  * Group ID is implied by the match criteria.
286  */
287 struct mlx5_flow_handle *
288 mlx5_add_flow_rules(struct mlx5_flow_table *ft,
289 		    const struct mlx5_flow_spec *spec,
290 		    struct mlx5_flow_act *flow_act,
291 		    struct mlx5_flow_destination *dest,
292 		    int num_dest);
293 void mlx5_del_flow_rules(struct mlx5_flow_handle *fr);
294 
295 int mlx5_modify_rule_destination(struct mlx5_flow_handle *handler,
296 				 struct mlx5_flow_destination *new_dest,
297 				 struct mlx5_flow_destination *old_dest);
298 
299 struct mlx5_fc *mlx5_fc_create(struct mlx5_core_dev *dev, bool aging);
300 
301 /* As mlx5_fc_create() but doesn't queue stats refresh thread. */
302 struct mlx5_fc *mlx5_fc_create_ex(struct mlx5_core_dev *dev, bool aging);
303 
304 void mlx5_fc_destroy(struct mlx5_core_dev *dev, struct mlx5_fc *counter);
305 u64 mlx5_fc_query_lastuse(struct mlx5_fc *counter);
306 void mlx5_fc_query_cached(struct mlx5_fc *counter,
307 			  u64 *bytes, u64 *packets, u64 *lastuse);
308 void mlx5_fc_query_cached_raw(struct mlx5_fc *counter,
309 			      u64 *bytes, u64 *packets, u64 *lastuse);
310 int mlx5_fc_query(struct mlx5_core_dev *dev, struct mlx5_fc *counter,
311 		  u64 *packets, u64 *bytes);
312 u32 mlx5_fc_id(struct mlx5_fc *counter);
313 
314 int mlx5_fs_add_rx_underlay_qpn(struct mlx5_core_dev *dev, u32 underlay_qpn);
315 int mlx5_fs_remove_rx_underlay_qpn(struct mlx5_core_dev *dev, u32 underlay_qpn);
316 
317 struct mlx5_modify_hdr *mlx5_modify_header_alloc(struct mlx5_core_dev *dev,
318 						 u8 ns_type, u8 num_actions,
319 						 void *modify_actions);
320 void mlx5_modify_header_dealloc(struct mlx5_core_dev *dev,
321 				struct mlx5_modify_hdr *modify_hdr);
322 struct mlx5_flow_definer *
323 mlx5_create_match_definer(struct mlx5_core_dev *dev,
324 			  enum mlx5_flow_namespace_type ns_type, u16 format_id,
325 			  u32 *match_mask);
326 void mlx5_destroy_match_definer(struct mlx5_core_dev *dev,
327 				struct mlx5_flow_definer *definer);
328 int mlx5_get_match_definer_id(struct mlx5_flow_definer *definer);
329 
330 struct mlx5_pkt_reformat_params {
331 	int type;
332 	u8 param_0;
333 	u8 param_1;
334 	size_t size;
335 	void *data;
336 };
337 
338 struct mlx5_pkt_reformat *mlx5_packet_reformat_alloc(struct mlx5_core_dev *dev,
339 						     struct mlx5_pkt_reformat_params *params,
340 						     enum mlx5_flow_namespace_type ns_type);
341 void mlx5_packet_reformat_dealloc(struct mlx5_core_dev *dev,
342 				  struct mlx5_pkt_reformat *reformat);
343 
344 u32 mlx5_flow_table_id(struct mlx5_flow_table *ft);
345 #endif
346