Commit | Line | Data |
---|---|---|
1ababeba DL |
1 | /* |
2 | * SR-IPv6 implementation | |
3 | * | |
4 | * Author: | |
5 | * David Lebrun <david.lebrun@uclouvain.be> | |
6 | * | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License | |
10 | * as published by the Free Software Foundation; either version | |
11 | * 2 of the License, or (at your option) any later version. | |
12 | */ | |
13 | ||
14 | #ifndef _UAPI_LINUX_SEG6_H | |
15 | #define _UAPI_LINUX_SEG6_H | |
16 | ||
17 | /* | |
18 | * SRH | |
19 | */ | |
20 | struct ipv6_sr_hdr { | |
21 | __u8 nexthdr; | |
22 | __u8 hdrlen; | |
23 | __u8 type; | |
24 | __u8 segments_left; | |
25 | __u8 first_segment; | |
26 | __u8 flag_1; | |
27 | __u8 flag_2; | |
28 | __u8 reserved; | |
29 | ||
30 | struct in6_addr segments[0]; | |
31 | }; | |
32 | ||
33 | #define SR6_FLAG1_CLEANUP (1 << 7) | |
34 | #define SR6_FLAG1_PROTECTED (1 << 6) | |
35 | #define SR6_FLAG1_OAM (1 << 5) | |
36 | #define SR6_FLAG1_ALERT (1 << 4) | |
37 | #define SR6_FLAG1_HMAC (1 << 3) | |
38 | ||
39 | #define SR6_TLV_INGRESS 1 | |
40 | #define SR6_TLV_EGRESS 2 | |
41 | #define SR6_TLV_OPAQUE 3 | |
42 | #define SR6_TLV_PADDING 4 | |
43 | #define SR6_TLV_HMAC 5 | |
44 | ||
45 | #define sr_has_cleanup(srh) ((srh)->flag_1 & SR6_FLAG1_CLEANUP) | |
46 | #define sr_has_hmac(srh) ((srh)->flag_1 & SR6_FLAG1_HMAC) | |
47 | ||
48 | struct sr6_tlv { | |
49 | __u8 type; | |
50 | __u8 len; | |
51 | __u8 data[0]; | |
52 | }; | |
53 | ||
54 | #endif |