tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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_IPTUNNEL_H
15#define _UAPI_LINUX_SEG6_IPTUNNEL_H
16
17#include <linux/seg6.h> /* For struct ipv6_sr_hdr. */
18
19enum {
20 SEG6_IPTUNNEL_UNSPEC,
21 SEG6_IPTUNNEL_SRH,
22 __SEG6_IPTUNNEL_MAX,
23};
24#define SEG6_IPTUNNEL_MAX (__SEG6_IPTUNNEL_MAX - 1)
25
26struct seg6_iptunnel_encap {
27 int mode;
28 struct ipv6_sr_hdr srh[0];
29};
30
31#define SEG6_IPTUN_ENCAP_SIZE(x) ((sizeof(*x)) + (((x)->srh->hdrlen + 1) << 3))
32
33enum {
34 SEG6_IPTUN_MODE_INLINE,
35 SEG6_IPTUN_MODE_ENCAP,
36};
37
38#ifdef __KERNEL__
39
40static inline size_t seg6_lwt_headroom(struct seg6_iptunnel_encap *tuninfo)
41{
42 int encap = (tuninfo->mode == SEG6_IPTUN_MODE_ENCAP);
43
44 return ((tuninfo->srh->hdrlen + 1) << 3) +
45 (encap * sizeof(struct ipv6hdr));
46}
47
48#endif
49
50#endif