1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
|
/* SPDX-License-Identifier: BSD-3-Clause */
/* Copyright (C) 2022 Microchip Technology Inc. and its subsidiaries.
* Microchip VCAP API
*/
#ifndef __VCAP_API__
#define __VCAP_API__
#include <linux/types.h>
#include <linux/list.h>
#include <linux/netdevice.h>
/* Use the generated API model */
#include "vcap_ag_api.h"
#define VCAP_CID_LOOKUP_SIZE 100000 /* Chains in a lookup */
#define VCAP_CID_INGRESS_L0 1000000 /* Ingress Stage 1 Lookup 0 */
#define VCAP_CID_INGRESS_L1 1100000 /* Ingress Stage 1 Lookup 1 */
#define VCAP_CID_INGRESS_L2 1200000 /* Ingress Stage 1 Lookup 2 */
#define VCAP_CID_INGRESS_L3 1300000 /* Ingress Stage 1 Lookup 3 */
#define VCAP_CID_INGRESS_L4 1400000 /* Ingress Stage 1 Lookup 4 */
#define VCAP_CID_INGRESS_L5 1500000 /* Ingress Stage 1 Lookup 5 */
#define VCAP_CID_PREROUTING_IPV6 3000000 /* Prerouting Stage */
#define VCAP_CID_PREROUTING 6000000 /* Prerouting Stage */
#define VCAP_CID_INGRESS_STAGE2_L0 8000000 /* Ingress Stage 2 Lookup 0 */
#define VCAP_CID_INGRESS_STAGE2_L1 8100000 /* Ingress Stage 2 Lookup 1 */
#define VCAP_CID_INGRESS_STAGE2_L2 8200000 /* Ingress Stage 2 Lookup 2 */
#define VCAP_CID_INGRESS_STAGE2_L3 8300000 /* Ingress Stage 2 Lookup 3 */
#define VCAP_CID_EGRESS_L0 10000000 /* Egress Lookup 0 */
#define VCAP_CID_EGRESS_L1 10100000 /* Egress Lookup 1 */
#define VCAP_CID_EGRESS_STAGE2_L0 20000000 /* Egress Stage 2 Lookup 0 */
#define VCAP_CID_EGRESS_STAGE2_L1 20100000 /* Egress Stage 2 Lookup 1 */
/* Known users of the VCAP API */
enum vcap_user {
VCAP_USER_PTP,
VCAP_USER_MRP,
VCAP_USER_CFM,
VCAP_USER_VLAN,
VCAP_USER_QOS,
VCAP_USER_VCAP_UTIL,
VCAP_USER_TC,
VCAP_USER_TC_EXTRA,
/* add new users above here */
/* used to define VCAP_USER_MAX below */
__VCAP_USER_AFTER_LAST,
VCAP_USER_MAX = __VCAP_USER_AFTER_LAST - 1,
};
/* VCAP information used for displaying data */
struct vcap_statistics {
char *name;
int count;
const char * const *keyfield_set_names;
const char * const *actionfield_set_names;
const char * const *keyfield_names;
const char * const *actionfield_names;
};
/* VCAP key/action field type, position and width */
struct vcap_field {
u16 type;
u16 width;
u16 offset;
};
/* VCAP keyset or actionset type and width */
struct vcap_set {
u8 type_id;
u8 sw_per_item;
u8 sw_cnt;
};
/* VCAP typegroup position and bitvalue */
struct vcap_typegroup {
u16 offset;
u16 width;
u16 value;
};
/* VCAP model data */
struct vcap_info {
char *name; /* user-friendly name */
u16 rows; /* number of row in instance */
u16 sw_count; /* maximum subwords used per rule */
u16 sw_width; /* bits per subword in a keyset */
u16 sticky_width; /* sticky bits per rule */
u16 act_width; /* bits per subword in an actionset */
u16 default_cnt; /* number of default rules */
u16 require_cnt_dis; /* not used */
u16 version; /* vcap rtl version */
const struct vcap_set *keyfield_set; /* keysets */
int keyfield_set_size; /* number of keysets */
const struct vcap_set *actionfield_set; /* actionsets */
int actionfield_set_size; /* number of actionsets */
/* map of keys per keyset */
const struct vcap_field **keyfield_set_map;
/* number of entries in the above map */
int *keyfield_set_map_size;
/* map of actions per actionset */
const struct vcap_field **actionfield_set_map;
/* number of entries in the above map */
int *actionfield_set_map_size;
/* map of keyset typegroups per subword size */
const struct vcap_typegroup **keyfield_set_typegroups;
/* map of actionset typegroups per subword size */
const struct vcap_typegroup **actionfield_set_typegroups;
};
enum vcap_field_type {
VCAP_FIELD_BIT,
VCAP_FIELD_U32,
VCAP_FIELD_U48,
VCAP_FIELD_U56,
VCAP_FIELD_U64,
VCAP_FIELD_U72,
VCAP_FIELD_U112,
VCAP_FIELD_U128,
};
/* VCAP rule data towards the VCAP cache */
struct vcap_cache_data {
u32 *keystream;
u32 *maskstream;
u32 *actionstream;
u32 counter;
bool sticky;
};
/* Selects which part of the rule must be updated */
enum vcap_selection {
VCAP_SEL_ENTRY = 0x01,
VCAP_SEL_ACTION = 0x02,
VCAP_SEL_COUNTER = 0x04,
VCAP_SEL_ALL = 0xff,
};
/* Commands towards the VCAP cache */
enum vcap_command {
VCAP_CMD_WRITE = 0,
VCAP_CMD_READ = 1,
VCAP_CMD_MOVE_DOWN = 2,
VCAP_CMD_MOVE_UP = 3,
VCAP_CMD_INITIALIZE = 4,
};
enum vcap_rule_error {
VCAP_ERR_NONE = 0, /* No known error */
VCAP_ERR_NO_ADMIN, /* No admin instance */
VCAP_ERR_NO_NETDEV, /* No netdev instance */
VCAP_ERR_NO_KEYSET_MATCH, /* No keyset matched the rule keys */
VCAP_ERR_NO_ACTIONSET_MATCH, /* No actionset matched the rule actions */
VCAP_ERR_NO_PORT_KEYSET_MATCH, /* No port keyset matched the rule keys */
};
/* Administration of each VCAP instance */
struct vcap_admin {
struct list_head list; /* for insertion in vcap_control */
struct list_head rules; /* list of rules */
struct list_head enabled; /* list of enabled ports */
struct mutex lock; /* control access to rules */
enum vcap_type vtype; /* type of vcap */
int vinst; /* instance number within the same type */
int first_cid; /* first chain id in this vcap */
int last_cid; /* last chain id in this vcap */
int tgt_inst; /* hardware instance number */
int lookups; /* number of lookups in this vcap type */
int lookups_per_instance; /* number of lookups in this instance */
int last_valid_addr; /* top of address range to be used */
int first_valid_addr; /* bottom of address range to be used */
int last_used_addr; /* address of lowest added rule */
bool w32be; /* vcap uses "32bit-word big-endian" encoding */
bool ingress; /* chain traffic direction */
struct vcap_cache_data cache; /* encoded rule data */
};
/* Client supplied VCAP rule data */
struct vcap_rule {
int vcap_chain_id; /* chain used for this rule */
enum vcap_user user; /* rule owner */
u16 priority;
u32 id; /* vcap rule id, must be unique, 0 will auto-generate a value */
u64 cookie; /* used by the client to identify the rule */
struct list_head keyfields; /* list of vcap_client_keyfield */
struct list_head actionfields; /* list of vcap_client_actionfield */
enum vcap_keyfield_set keyset; /* keyset used: may be derived from fields */
enum vcap_actionfield_set actionset; /* actionset used: may be derived from fields */
enum vcap_rule_error exterr; /* extended error - used by TC */
u64 client; /* space for client defined data */
};
/* List of keysets */
struct vcap_keyset_list {
int max; /* size of the keyset list */
int cnt; /* count of keysets actually in the list */
enum vcap_keyfield_set *keysets; /* the list of keysets */
};
/* List of actionsets */
struct vcap_actionset_list {
int max; /* size of the actionset list */
int cnt; /* count of actionsets actually in the list */
enum vcap_actionfield_set *actionsets; /* the list of actionsets */
};
/* Client output printf-like function with destination */
struct vcap_output_print {
__printf(2, 3)
void (*prf)(void *out, const char *fmt, ...);
void *dst;
};
/* Client supplied VCAP callback operations */
struct vcap_operations {
/* validate port keyset operation */
enum vcap_keyfield_set (*validate_keyset)
(struct net_device *ndev,
struct vcap_admin *admin,
struct vcap_rule *rule,
struct vcap_keyset_list *kslist,
u16 l3_proto);
/* add default rule fields for the selected keyset operations */
void (*add_default_fields)
(struct net_device *ndev,
struct vcap_admin *admin,
struct vcap_rule *rule);
/* cache operations */
void (*cache_erase)
(struct vcap_admin *admin);
void (*cache_write)
(struct net_device *ndev,
struct vcap_admin *admin,
enum vcap_selection sel,
u32 idx, u32 count);
void (*cache_read)
(struct net_device *ndev,
struct vcap_admin *admin,
enum vcap_selection sel,
u32 idx,
u32 count);
/* block operations */
void (*init)
(struct net_device *ndev,
struct vcap_admin *admin,
u32 addr,
u32 count);
void (*update)
(struct net_device *ndev,
struct vcap_admin *admin,
enum vcap_command cmd,
enum vcap_selection sel,
u32 addr);
void (*move)
(struct net_device *ndev,
struct vcap_admin *admin,
u32 addr,
int offset,
int count);
/* informational */
int (*port_info)
(struct net_device *ndev,
struct vcap_admin *admin,
struct vcap_output_print *out);
};
/* VCAP API Client control interface */
struct vcap_control {
const struct vcap_operations *ops; /* client supplied operations */
const struct vcap_info *vcaps; /* client supplied vcap models */
const struct vcap_statistics *stats; /* client supplied vcap stats */
struct list_head list; /* list of vcap instances */
};
#endif /* __VCAP_API__ */
|
