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
|
/*
* Copyright (c) 2018 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __GBP_CONTRACT_H__
#define __GBP_CONTRACT_H__
#include <plugins/gbp/gbp_types.h>
/**
* The key for an Contract
*/
typedef struct gbp_contract_key_t_
{
union
{
struct
{
/**
* source and destination EPGs for which the ACL applies
*/
epg_id_t gck_src;
epg_id_t gck_dst;
};
u32 as_u32;
};
} gbp_contract_key_t;
typedef struct gbp_next_hop_t_
{
fib_node_t gnh_node;
ip46_address_t gnh_ip;
mac_address_t gnh_mac;
index_t gnh_gu;
index_t gnh_bd;
index_t gnh_rd;
u32 gnh_ge;
u32 gnh_sibling;
index_t gnh_ai[FIB_PROTOCOL_IP_MAX];
} gbp_next_hop_t;
#define foreach_gbp_hash_mode \
_(SRC_IP, "src-ip") \
_(DST_IP, "dst-ip")
typedef enum gbp_hash_mode_t_
{
#define _(v,s) GBP_HASH_MODE_##v,
foreach_gbp_hash_mode
#undef _
} gbp_hash_mode_t;
#define foreach_gbp_rule_action \
_(PERMIT, "permit") \
_(DENY, "deny") \
_(REDIRECT, "redirect")
typedef enum gbp_rule_action_t_
{
#define _(v,s) GBP_RULE_##v,
foreach_gbp_rule_action
#undef _
} gbp_rule_action_t;
#define foreach_gbp_policy_node \
_(L2, "L2") \
_(IP4, "ip4") \
_(IP6, "ip6")
typedef enum gbp_policy_node_t_
{
#define _(v,s) GBP_POLICY_NODE_##v,
foreach_gbp_policy_node
#undef _
} gbp_policy_node_t;
#define GBP_POLICY_N_NODES (GBP_POLICY_NODE_IP6+1)
#define FOR_EACH_GBP_POLICY_NODE(pnode) \
for (pnode = GBP_POLICY_NODE_L2; pnode < GBP_POLICY_N_NODES; pnode++)
typedef struct gbp_rule_t_
{
gbp_rule_action_t gu_action;
gbp_hash_mode_t gu_hash_mode;
index_t *gu_nhs;
/**
* DPO of the load-balance object used to redirect
*/
dpo_id_t gu_dpo[GBP_POLICY_N_NODES][FIB_PROTOCOL_IP_MAX];
} gbp_rule_t;
/**
* A Group Based Policy Contract.
* Determines the ACL that applies to traffic pass between two endpoint groups
*/
typedef struct gbp_contract_t_
{
/**
* source and destination EPGs
*/
gbp_contract_key_t gc_key;
u32 gc_acl_index;
u32 gc_lc_index;
/**
* The ACL to apply for packets from the source to the destination EPG
*/
index_t *gc_rules;
} gbp_contract_t;
/**
* EPG src,dst pair to ACL mapping table, aka contract DB
*/
typedef struct gbp_contract_db_t_
{
/**
* We can form a u64 key from the pair, so use a simple hash table
*/
uword *gc_hash;
} gbp_contract_db_t;
extern int gbp_contract_update (epg_id_t src_epg,
epg_id_t dst_epg,
u32 acl_index, index_t * rules);
extern int gbp_contract_delete (epg_id_t src_epg, epg_id_t dst_epg);
extern index_t gbp_rule_alloc (gbp_rule_action_t action,
gbp_hash_mode_t hash_mode, index_t * nhs);
extern index_t gbp_next_hop_alloc (const ip46_address_t * ip,
index_t grd,
const mac_address_t * mac, index_t gbd);
typedef int (*gbp_contract_cb_t) (gbp_contract_t * gbpe, void *ctx);
extern void gbp_contract_walk (gbp_contract_cb_t bgpe, void *ctx);
extern u8 *format_gbp_contract (u8 * s, va_list * args);
/**
* DP functions and databases
*/
extern gbp_contract_db_t gbp_contract_db;
always_inline index_t
gbp_contract_find (gbp_contract_key_t * key)
{
uword *p;
p = hash_get (gbp_contract_db.gc_hash, key->as_u32);
if (NULL != p)
return (p[0]);
return (INDEX_INVALID);
}
extern gbp_contract_t *gbp_contract_pool;
always_inline gbp_contract_t *
gbp_contract_get (index_t gci)
{
return (pool_elt_at_index (gbp_contract_pool, gci));
}
extern gbp_rule_t *gbp_rule_pool;
always_inline gbp_rule_t *
gbp_rule_get (index_t gui)
{
return (pool_elt_at_index (gbp_rule_pool, gui));
}
#endif
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
|
