2 * SR-IPv6 implementation
5 * David Lebrun <david.lebrun@uclouvain.be>
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.
14 #ifndef _UAPI_LINUX_SEG6_IPTUNNEL_H
15 #define _UAPI_LINUX_SEG6_IPTUNNEL_H
22 #define SEG6_IPTUNNEL_MAX (__SEG6_IPTUNNEL_MAX - 1)
24 struct seg6_iptunnel_encap {
26 struct ipv6_sr_hdr srh[0];
29 #define SEG6_IPTUN_ENCAP_SIZE(x) ((sizeof(*x)) + (((x)->srh->hdrlen + 1) << 3))
32 SEG6_IPTUN_MODE_INLINE,
33 SEG6_IPTUN_MODE_ENCAP,
38 static inline size_t seg6_lwt_headroom(struct seg6_iptunnel_encap *tuninfo)
40 int encap = (tuninfo->mode == SEG6_IPTUN_MODE_ENCAP);
42 return ((tuninfo->srh->hdrlen + 1) << 3) +
43 (encap * sizeof(struct ipv6hdr));