1 /*-
2 * Copyright (c) 2013-2017, Mellanox Technologies, Ltd. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS `AS IS' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26 #ifndef _MLX5_FS_
27 #define _MLX5_FS_
28
29 #include <linux/list.h>
30 #include <linux/bitops.h>
31
32 #include <dev/mlx5/mlx5_ifc.h>
33 #include <dev/mlx5/device.h>
34 #include <dev/mlx5/driver.h>
35
36 enum mlx5_flow_destination_type {
37 MLX5_FLOW_DESTINATION_TYPE_NONE,
38 MLX5_FLOW_DESTINATION_TYPE_VPORT,
39 MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE,
40 MLX5_FLOW_DESTINATION_TYPE_TIR,
41 MLX5_FLOW_DESTINATION_TYPE_FLOW_SAMPLER,
42 MLX5_FLOW_DESTINATION_TYPE_UPLINK,
43 MLX5_FLOW_DESTINATION_TYPE_PORT,
44 MLX5_FLOW_DESTINATION_TYPE_COUNTER,
45 MLX5_FLOW_DESTINATION_TYPE_FLOW_TABLE_NUM,
46 MLX5_FLOW_DESTINATION_TYPE_RANGE,
47 MLX5_FLOW_DESTINATION_TYPE_TABLE_TYPE,
48 };
49
50 enum {
51 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_PRIO = 1 << 16,
52 MLX5_FLOW_CONTEXT_ACTION_ENCRYPT = 1 << 17,
53 MLX5_FLOW_CONTEXT_ACTION_DECRYPT = 1 << 18,
54 MLX5_FLOW_CONTEXT_ACTION_FWD_NEXT_NS = 1 << 19,
55 };
56
57 enum {
58 MLX5_FLOW_TABLE_TUNNEL_EN_REFORMAT = BIT(0),
59 MLX5_FLOW_TABLE_TUNNEL_EN_DECAP = BIT(1),
60 MLX5_FLOW_TABLE_TERMINATION = BIT(2),
61 MLX5_FLOW_TABLE_UNMANAGED = BIT(3),
62 MLX5_FLOW_TABLE_OTHER_VPORT = BIT(4),
63 };
64
65 /*Flow tag*/
66 enum {
67 MLX5_FS_DEFAULT_FLOW_TAG = 0xFFFFFF,
68 MLX5_FS_ETH_FLOW_TAG = 0xFFFFFE,
69 MLX5_FS_SNIFFER_FLOW_TAG = 0xFFFFFD,
70 };
71
72 enum {
73 MLX5_FS_FLOW_TAG_MASK = 0xFFFFFF,
74 };
75
76 #define FS_MAX_TYPES 10
77 #define FS_MAX_ENTRIES 32000U
78
79 #define FS_REFORMAT_KEYWORD "_reformat"
80
81 enum mlx5_flow_namespace_type {
82 MLX5_FLOW_NAMESPACE_BYPASS,
83 MLX5_FLOW_NAMESPACE_KERNEL_RX_MACSEC,
84 MLX5_FLOW_NAMESPACE_LAG,
85 MLX5_FLOW_NAMESPACE_OFFLOADS,
86 MLX5_FLOW_NAMESPACE_ETHTOOL,
87 MLX5_FLOW_NAMESPACE_KERNEL,
88 MLX5_FLOW_NAMESPACE_LEFTOVERS,
89 MLX5_FLOW_NAMESPACE_ANCHOR,
90 MLX5_FLOW_NAMESPACE_FDB_BYPASS,
91 MLX5_FLOW_NAMESPACE_FDB,
92 MLX5_FLOW_NAMESPACE_ESW_EGRESS,
93 MLX5_FLOW_NAMESPACE_ESW_INGRESS,
94 MLX5_FLOW_NAMESPACE_SNIFFER_RX,
95 MLX5_FLOW_NAMESPACE_SNIFFER_TX,
96 MLX5_FLOW_NAMESPACE_EGRESS,
97 MLX5_FLOW_NAMESPACE_EGRESS_IPSEC,
98 MLX5_FLOW_NAMESPACE_EGRESS_MACSEC,
99 MLX5_FLOW_NAMESPACE_RDMA_RX,
100 MLX5_FLOW_NAMESPACE_RDMA_RX_KERNEL,
101 MLX5_FLOW_NAMESPACE_RDMA_TX,
102 MLX5_FLOW_NAMESPACE_PORT_SEL,
103 MLX5_FLOW_NAMESPACE_RDMA_RX_COUNTERS,
104 MLX5_FLOW_NAMESPACE_RDMA_TX_COUNTERS,
105 MLX5_FLOW_NAMESPACE_RDMA_RX_IPSEC,
106 MLX5_FLOW_NAMESPACE_RDMA_TX_IPSEC,
107 };
108
109 enum {
110 FDB_BYPASS_PATH,
111 FDB_TC_OFFLOAD,
112 FDB_FT_OFFLOAD,
113 FDB_TC_MISS,
114 FDB_BR_OFFLOAD,
115 FDB_SLOW_PATH,
116 FDB_PER_VPORT,
117 };
118
119 struct mlx5_flow_table;
120 struct mlx5_flow_group;
121 struct mlx5_flow_rule;
122 struct mlx5_flow_namespace;
123 struct mlx5_flow_handle;
124
125 enum {
126 FLOW_CONTEXT_HAS_TAG = BIT(0),
127 };
128
129 struct mlx5_flow_context {
130 u32 flags;
131 u32 flow_tag;
132 u32 flow_source;
133 };
134
135 struct mlx5_flow_spec {
136 u8 match_criteria_enable;
137 u32 match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
138 u32 match_value[MLX5_ST_SZ_DW(fte_match_param)];
139 struct mlx5_flow_context flow_context;
140 };
141
142 enum {
143 MLX5_FLOW_DEST_VPORT_VHCA_ID = BIT(0),
144 MLX5_FLOW_DEST_VPORT_REFORMAT_ID = BIT(1),
145 };
146
147 enum mlx5_flow_dest_range_field {
148 MLX5_FLOW_DEST_RANGE_FIELD_PKT_LEN = 0,
149 };
150
151 struct mlx5_flow_destination {
152 enum mlx5_flow_destination_type type;
153 union {
154 u32 tir_num;
155 u32 ft_num;
156 struct mlx5_flow_table *ft;
157 u32 counter_id;
158 struct {
159 u16 num;
160 u16 vhca_id;
161 struct mlx5_pkt_reformat *pkt_reformat;
162 u8 flags;
163 } vport;
164 struct {
165 struct mlx5_flow_table *hit_ft;
166 struct mlx5_flow_table *miss_ft;
167 enum mlx5_flow_dest_range_field field;
168 u32 min;
169 u32 max;
170 } range;
171 u32 sampler_id;
172 };
173 };
174
175 struct mlx5_exe_aso {
176 u32 object_id;
177 u8 type;
178 u8 return_reg_id;
179 union {
180 u32 ctrl_data;
181 struct {
182 u8 meter_idx;
183 u8 init_color;
184 } flow_meter;
185 };
186 };
187
188 enum {
189 FLOW_ACT_NO_APPEND = BIT(0),
190 FLOW_ACT_IGNORE_FLOW_LEVEL = BIT(1),
191 };
192
193 struct mlx5_fs_vlan {
194 u16 ethtype;
195 u16 vid;
196 u8 prio;
197 };
198
199 #define MLX5_FS_VLAN_DEPTH 2
200
201 enum mlx5_flow_act_crypto_type {
202 MLX5_FLOW_ACT_CRYPTO_TYPE_IPSEC,
203 };
204
205 enum mlx5_flow_act_crypto_op {
206 MLX5_FLOW_ACT_CRYPTO_OP_ENCRYPT,
207 MLX5_FLOW_ACT_CRYPTO_OP_DECRYPT,
208 };
209
210 struct mlx5_flow_act_crypto_params {
211 u32 obj_id;
212 u8 type; /* see enum mlx5_flow_act_crypto_type */
213 u8 op; /* see enum mlx5_flow_act_crypto_op */
214 };
215
216 struct mlx5_flow_act {
217 u32 action;
218 struct mlx5_modify_hdr *modify_hdr;
219 struct mlx5_pkt_reformat *pkt_reformat;
220 struct mlx5_flow_act_crypto_params crypto;
221 u32 flags;
222 struct mlx5_fs_vlan vlan[MLX5_FS_VLAN_DEPTH];
223 struct ib_counters *counters;
224 struct mlx5_flow_group *fg;
225 struct mlx5_exe_aso exe_aso;
226 };
227
228 #define FT_NAME_STR_SZ 20
229 #define LEFTOVERS_RULE_NUM 2
build_leftovers_ft_param(char * name,unsigned int * priority,int * n_ent,int * n_grp)230 static inline void build_leftovers_ft_param(char *name,
231 unsigned int *priority,
232 int *n_ent,
233 int *n_grp)
234 {
235 snprintf(name, FT_NAME_STR_SZ, "leftovers");
236 *priority = 0; /*Priority of leftovers_prio-0*/
237 *n_ent = LEFTOVERS_RULE_NUM + 1; /*1: star rules*/
238 *n_grp = LEFTOVERS_RULE_NUM;
239 }
240
outer_header_zero(u32 * match_criteria)241 static inline bool outer_header_zero(u32 *match_criteria)
242 {
243 int size = MLX5_ST_SZ_BYTES(fte_match_param);
244 char *outer_headers_c = MLX5_ADDR_OF(fte_match_param, match_criteria,
245 outer_headers);
246
247 return outer_headers_c[0] == 0 && !memcmp(outer_headers_c,
248 outer_headers_c + 1,
249 size - 1);
250 }
251
252 struct mlx5_flow_namespace *
253 mlx5_get_flow_vport_acl_namespace(struct mlx5_core_dev *dev,
254 enum mlx5_flow_namespace_type type,
255 int vport);
256
257 struct mlx5_flow_table_attr {
258 int prio;
259 int max_fte;
260 u32 level;
261 u32 flags;
262 u16 uid;
263 struct mlx5_flow_table *next_ft;
264
265 struct {
266 int max_num_groups;
267 int num_reserved_entries;
268 } autogroup;
269 };
270
271 struct mlx5_flow_namespace *
272 mlx5_get_fdb_sub_ns(struct mlx5_core_dev *dev, int n);
273
274 struct mlx5_flow_namespace *
275 mlx5_get_flow_namespace(struct mlx5_core_dev *dev,
276 enum mlx5_flow_namespace_type type);
277
278 /* The underlying implementation create two more entries for
279 * chaining flow tables. the user should be aware that if he pass
280 * max_num_ftes as 2^N it will result in doubled size flow table
281 */
282 struct mlx5_flow_table *
283 mlx5_create_auto_grouped_flow_table(struct mlx5_flow_namespace *ns,
284 struct mlx5_flow_table_attr *ft_attr);
285
286 struct mlx5_flow_table *
287 mlx5_create_vport_flow_table(struct mlx5_flow_namespace *ns,
288 struct mlx5_flow_table_attr *ft_attr, u16 vport);
289
290 struct mlx5_flow_table *mlx5_create_lag_demux_flow_table(
291 struct mlx5_flow_namespace *ns,
292 int prio, u32 level);
293
294 struct mlx5_flow_table *
295 mlx5_create_flow_table(struct mlx5_flow_namespace *ns,
296 struct mlx5_flow_table_attr *ft_attr);
297 int mlx5_destroy_flow_table(struct mlx5_flow_table *ft);
298
299 /* inbox should be set with the following values:
300 * start_flow_index
301 * end_flow_index
302 * match_criteria_enable
303 * match_criteria
304 */
305 struct mlx5_flow_group *
306 mlx5_create_flow_group(struct mlx5_flow_table *ft, u32 *in);
307 void mlx5_destroy_flow_group(struct mlx5_flow_group *fg);
308
309 struct mlx5_flow_handle *
310 mlx5_add_flow_rules(struct mlx5_flow_table *ft,
311 const struct mlx5_flow_spec *spec,
312 struct mlx5_flow_act *flow_act,
313 struct mlx5_flow_destination *dest,
314 int num_dest);
315 void mlx5_del_flow_rules(struct mlx5_flow_handle **pp);
316
317 int mlx5_modify_rule_destination(struct mlx5_flow_handle *handler,
318 struct mlx5_flow_destination *new_dest,
319 struct mlx5_flow_destination *old_dest);
320
321 /*The following API is for sniffer*/
322 typedef int (*rule_event_fn)(struct mlx5_flow_rule *rule,
323 bool ctx_changed,
324 void *client_data,
325 void *context);
326
327 struct mlx5_flow_handler;
328
329 struct flow_client_priv_data;
330
331 void mlx5e_sniffer_roce_mode_notify(
332 struct mlx5_core_dev *mdev,
333 int action);
334
335 int mlx5_set_rule_private_data(struct mlx5_flow_rule *rule, struct
336 mlx5_flow_handler *handler, void
337 *client_data);
338
339 struct mlx5_flow_handler *mlx5_register_rule_notifier(struct mlx5_core_dev *dev,
340 enum mlx5_flow_namespace_type ns_type,
341 rule_event_fn add_cb,
342 rule_event_fn del_cb,
343 void *context);
344
345 void mlx5_unregister_rule_notifier(struct mlx5_flow_handler *handler);
346
347 void mlx5_flow_iterate_existing_rules(struct mlx5_flow_namespace *ns,
348 rule_event_fn cb,
349 void *context);
350
351 void mlx5_get_match_criteria(u32 *match_criteria,
352 struct mlx5_flow_rule *rule);
353
354 void mlx5_get_match_value(u32 *match_value,
355 struct mlx5_flow_rule *rule);
356
357 u8 mlx5_get_match_criteria_enable(struct mlx5_flow_rule *rule);
358
359 struct mlx5_flow_rules_list *get_roce_flow_rules(u8 roce_mode);
360
361 void mlx5_del_flow_rules_list(struct mlx5_flow_rules_list *rules_list);
362
363 struct mlx5_flow_rules_list {
364 struct list_head head;
365 };
366
367 struct mlx5_flow_rule_node {
368 struct list_head list;
369 u32 match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
370 u32 match_value[MLX5_ST_SZ_DW(fte_match_param)];
371 u8 match_criteria_enable;
372 };
373
374 struct mlx5_core_fs_mask {
375 u8 match_criteria_enable;
376 u32 match_criteria[MLX5_ST_SZ_DW(fte_match_param)];
377 };
378
379 bool fs_match_exact_val(
380 struct mlx5_core_fs_mask *mask,
381 void *val1,
382 void *val2);
383
384 bool fs_match_exact_mask(
385 u8 match_criteria_enable1,
386 u8 match_criteria_enable2,
387 void *mask1,
388 void *mask2);
389 /**********end API for sniffer**********/
390 struct mlx5_modify_hdr *mlx5_modify_header_alloc(struct mlx5_core_dev *dev,
391 enum mlx5_flow_namespace_type ns_type,
392 u8 num_actions,
393 void *modify_actions);
394 void mlx5_modify_header_dealloc(struct mlx5_core_dev *dev,
395 struct mlx5_modify_hdr *modify_hdr);
396
397 struct mlx5_pkt_reformat_params {
398 int type;
399 u8 param_0;
400 u8 param_1;
401 size_t size;
402 void *data;
403 };
404
405 struct mlx5_pkt_reformat *mlx5_packet_reformat_alloc(struct mlx5_core_dev *dev,
406 struct mlx5_pkt_reformat_params *params,
407 enum mlx5_flow_namespace_type ns_type);
408 void mlx5_packet_reformat_dealloc(struct mlx5_core_dev *dev,
409 struct mlx5_pkt_reformat *pkt_reformat);
410 /********** Flow counters API **********/
411 struct mlx5_fc;
412 struct mlx5_fc *mlx5_fc_create(struct mlx5_core_dev *dev, bool aging);
413
414 /* As mlx5_fc_create() but doesn't queue stats refresh thread. */
415 struct mlx5_fc *mlx5_fc_create_ex(struct mlx5_core_dev *dev, bool aging);
416
417 void mlx5_fc_destroy(struct mlx5_core_dev *dev, struct mlx5_fc *counter);
418 u64 mlx5_fc_query_lastuse(struct mlx5_fc *counter);
419 void mlx5_fc_query_cached(struct mlx5_fc *counter,
420 u64 *bytes, u64 *packets, u64 *lastuse);
421 int mlx5_fc_query(struct mlx5_core_dev *dev, struct mlx5_fc *counter,
422 u64 *packets, u64 *bytes);
423 u32 mlx5_fc_id(struct mlx5_fc *counter);
424 /******* End of Flow counters API ******/
425
426 u32 mlx5_flow_table_id(struct mlx5_flow_table *ft);
427 int mlx5_fs_add_rx_underlay_qpn(struct mlx5_core_dev *dev, u32 underlay_qpn);
428 int mlx5_fs_remove_rx_underlay_qpn(struct mlx5_core_dev *dev, u32 underlay_qpn);
429 #endif
430