Greg Kroah-Hartman | e2be04c | 2017-11-01 15:09:13 +0100 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ |
David Lebrun | 1ababeb | 2016-11-08 14:57:39 +0100 | [diff] [blame] | 2 | /* |
| 3 | * SR-IPv6 implementation |
| 4 | * |
| 5 | * Author: |
| 6 | * David Lebrun <david.lebrun@uclouvain.be> |
| 7 | * |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License |
| 11 | * as published by the Free Software Foundation; either version |
| 12 | * 2 of the License, or (at your option) any later version. |
| 13 | */ |
| 14 | |
| 15 | #ifndef _UAPI_LINUX_SEG6_H |
| 16 | #define _UAPI_LINUX_SEG6_H |
| 17 | |
David Lebrun | a50a05f | 2017-01-15 15:26:16 +0100 | [diff] [blame] | 18 | #include <linux/types.h> |
Dmitry V. Levin | ea3ebc7 | 2017-02-23 14:30:34 +0300 | [diff] [blame] | 19 | #include <linux/in6.h> /* For struct in6_addr. */ |
David Lebrun | a50a05f | 2017-01-15 15:26:16 +0100 | [diff] [blame] | 20 | |
David Lebrun | 1ababeb | 2016-11-08 14:57:39 +0100 | [diff] [blame] | 21 | /* |
| 22 | * SRH |
| 23 | */ |
| 24 | struct ipv6_sr_hdr { |
| 25 | __u8 nexthdr; |
| 26 | __u8 hdrlen; |
| 27 | __u8 type; |
| 28 | __u8 segments_left; |
Ahmed Abdelsalam | 6ab6a0d | 2017-11-15 15:34:23 +0100 | [diff] [blame^] | 29 | __u8 first_segment; /* Represents the last_entry field of SRH */ |
David Lebrun | 013e816 | 2017-02-02 11:29:38 +0100 | [diff] [blame] | 30 | __u8 flags; |
Ahmed Abdelsalam | 6ab6a0d | 2017-11-15 15:34:23 +0100 | [diff] [blame^] | 31 | __u16 tag; |
David Lebrun | 1ababeb | 2016-11-08 14:57:39 +0100 | [diff] [blame] | 32 | |
| 33 | struct in6_addr segments[0]; |
| 34 | }; |
| 35 | |
David Lebrun | 1ababeb | 2016-11-08 14:57:39 +0100 | [diff] [blame] | 36 | #define SR6_FLAG1_PROTECTED (1 << 6) |
| 37 | #define SR6_FLAG1_OAM (1 << 5) |
| 38 | #define SR6_FLAG1_ALERT (1 << 4) |
| 39 | #define SR6_FLAG1_HMAC (1 << 3) |
| 40 | |
| 41 | #define SR6_TLV_INGRESS 1 |
| 42 | #define SR6_TLV_EGRESS 2 |
| 43 | #define SR6_TLV_OPAQUE 3 |
| 44 | #define SR6_TLV_PADDING 4 |
| 45 | #define SR6_TLV_HMAC 5 |
| 46 | |
David Lebrun | 013e816 | 2017-02-02 11:29:38 +0100 | [diff] [blame] | 47 | #define sr_has_hmac(srh) ((srh)->flags & SR6_FLAG1_HMAC) |
David Lebrun | 1ababeb | 2016-11-08 14:57:39 +0100 | [diff] [blame] | 48 | |
| 49 | struct sr6_tlv { |
| 50 | __u8 type; |
| 51 | __u8 len; |
| 52 | __u8 data[0]; |
| 53 | }; |
| 54 | |
| 55 | #endif |