3 * Copyright (C) 2020 Hiroki Shirokura, LINE Corporation
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the Free
7 * Software Foundation; either version 2 of the License, or (at your option)
10 * This program is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * You should have received a copy of the GNU General Public License along
16 * with this program; see the file COPYING; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
27 #include <arpa/inet.h>
28 #include <netinet/in.h>
30 #define SRV6_MAX_SIDS 16
31 #define SRV6_LOCNAME_SIZE 256
37 #define sid2str(sid, str, size) \
38 inet_ntop(AF_INET6, sid, str, size)
46 enum seg6local_action_t
{
47 ZEBRA_SEG6_LOCAL_ACTION_UNSPEC
= 0,
48 ZEBRA_SEG6_LOCAL_ACTION_END
= 1,
49 ZEBRA_SEG6_LOCAL_ACTION_END_X
= 2,
50 ZEBRA_SEG6_LOCAL_ACTION_END_T
= 3,
51 ZEBRA_SEG6_LOCAL_ACTION_END_DX2
= 4,
52 ZEBRA_SEG6_LOCAL_ACTION_END_DX6
= 5,
53 ZEBRA_SEG6_LOCAL_ACTION_END_DX4
= 6,
54 ZEBRA_SEG6_LOCAL_ACTION_END_DT6
= 7,
55 ZEBRA_SEG6_LOCAL_ACTION_END_DT4
= 8,
56 ZEBRA_SEG6_LOCAL_ACTION_END_B6
= 9,
57 ZEBRA_SEG6_LOCAL_ACTION_END_B6_ENCAP
= 10,
58 ZEBRA_SEG6_LOCAL_ACTION_END_BM
= 11,
59 ZEBRA_SEG6_LOCAL_ACTION_END_S
= 12,
60 ZEBRA_SEG6_LOCAL_ACTION_END_AS
= 13,
61 ZEBRA_SEG6_LOCAL_ACTION_END_AM
= 14,
62 ZEBRA_SEG6_LOCAL_ACTION_END_BPF
= 15,
63 ZEBRA_SEG6_LOCAL_ACTION_END_DT46
= 16,
68 struct in6_addr segs
[256];
71 struct seg6local_context
{
78 char name
[SRV6_LOCNAME_SIZE
];
79 struct prefix_ipv6 prefix
;
82 * Bit length of SRv6 locator described in
83 * draft-ietf-bess-srv6-services-05#section-3.2.1
85 uint8_t block_bits_length
;
86 uint8_t node_bits_length
;
87 uint8_t function_bits_length
;
88 uint8_t argument_bits_length
;
96 #define SRV6_LOCATOR_USID (1 << 0) /* The SRv6 Locator is a uSID Locator */
100 DECLARE_QOBJ_TYPE(srv6_locator
);
102 struct srv6_locator_chunk
{
103 char locator_name
[SRV6_LOCNAME_SIZE
];
104 struct prefix_ipv6 prefix
;
107 * Bit length of SRv6 locator described in
108 * draft-ietf-bess-srv6-services-05#section-3.2.1
110 uint8_t block_bits_length
;
111 uint8_t node_bits_length
;
112 uint8_t function_bits_length
;
113 uint8_t argument_bits_length
;
116 * For Zclient communication values
127 * SRv6 Endpoint Behavior codepoints, as defined by IANA in
128 * https://www.iana.org/assignments/segment-routing/segment-routing.xhtml
130 enum srv6_endpoint_behavior_codepoint
{
131 SRV6_ENDPOINT_BEHAVIOR_RESERVED
= 0x0000,
132 SRV6_ENDPOINT_BEHAVIOR_END_DT6
= 0x0012,
133 SRV6_ENDPOINT_BEHAVIOR_END_DT4
= 0x0013,
134 SRV6_ENDPOINT_BEHAVIOR_END_DT46
= 0x0014,
135 SRV6_ENDPOINT_BEHAVIOR_END_DT6_USID
= 0x003E,
136 SRV6_ENDPOINT_BEHAVIOR_END_DT4_USID
= 0x003F,
137 SRV6_ENDPOINT_BEHAVIOR_END_DT46_USID
= 0x0040,
138 SRV6_ENDPOINT_BEHAVIOR_OPAQUE
= 0xFFFF,
141 struct nexthop_srv6
{
142 /* SRv6 localsid info for Endpoint-behaviour */
143 enum seg6local_action_t seg6local_action
;
144 struct seg6local_context seg6local_ctx
;
146 /* SRv6 Headend-behaviour */
147 struct in6_addr seg6_segs
;
150 static inline const char *seg6_mode2str(enum seg6_mode_t mode
)
164 static inline bool sid_same(
165 const struct in6_addr
*a
,
166 const struct in6_addr
*b
)
173 return memcmp(a
, b
, sizeof(struct in6_addr
)) == 0;
176 static inline bool sid_diff(
177 const struct in6_addr
*a
,
178 const struct in6_addr
*b
)
180 return !sid_same(a
, b
);
183 static inline bool sid_zero(
184 const struct in6_addr
*a
)
186 struct in6_addr zero
= {};
188 return sid_same(a
, &zero
);
191 static inline void *sid_copy(struct in6_addr
*dst
,
192 const struct in6_addr
*src
)
194 return memcpy(dst
, src
, sizeof(struct in6_addr
));
198 seg6local_action2str(uint32_t action
);
200 const char *seg6local_context2str(char *str
, size_t size
,
201 const struct seg6local_context
*ctx
,
204 int snprintf_seg6_segs(char *str
,
205 size_t size
, const struct seg6_segs
*segs
);
207 extern struct srv6_locator
*srv6_locator_alloc(const char *name
);
208 extern struct srv6_locator_chunk
*srv6_locator_chunk_alloc(void);
209 extern void srv6_locator_free(struct srv6_locator
*locator
);
210 extern void srv6_locator_chunk_free(struct srv6_locator_chunk
**chunk
);
211 json_object
*srv6_locator_chunk_json(const struct srv6_locator_chunk
*chunk
);
212 json_object
*srv6_locator_json(const struct srv6_locator
*loc
);
213 json_object
*srv6_locator_detailed_json(const struct srv6_locator
*loc
);
215 srv6_locator_chunk_detailed_json(const struct srv6_locator_chunk
*chunk
);