| Christopher Ferris | 2fd4b3c | 2017-02-21 12:32:08 -0800 | [diff] [blame] | 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 flags; |
| 27 | __u16 reserved; |
| 28 | |
| 29 | struct in6_addr segments[0]; |
| 30 | }; |
| 31 | |
| 32 | #define SR6_FLAG1_PROTECTED (1 << 6) |
| 33 | #define SR6_FLAG1_OAM (1 << 5) |
| 34 | #define SR6_FLAG1_ALERT (1 << 4) |
| 35 | #define SR6_FLAG1_HMAC (1 << 3) |
| 36 | |
| 37 | #define SR6_TLV_INGRESS 1 |
| 38 | #define SR6_TLV_EGRESS 2 |
| 39 | #define SR6_TLV_OPAQUE 3 |
| 40 | #define SR6_TLV_PADDING 4 |
| 41 | #define SR6_TLV_HMAC 5 |
| 42 | |
| 43 | #define sr_has_hmac(srh) ((srh)->flags & SR6_FLAG1_HMAC) |
| 44 | |
| 45 | struct sr6_tlv { |
| 46 | __u8 type; |
| 47 | __u8 len; |
| 48 | __u8 data[0]; |
| 49 | }; |
| 50 | |
| 51 | #endif |