include/linux/seg6_iptunnel.h

   1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
   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 _LINUX_SEG6_IPTUNNEL_H
  16 #define _LINUX_SEG6_IPTUNNEL_H
  17
  18 #include <linux/seg6.h>         /* For struct ipv6_sr_hdr. */
  19
  20 enum {
  21         SEG6_IPTUNNEL_UNSPEC,
  22         SEG6_IPTUNNEL_SRH,
  23         __SEG6_IPTUNNEL_MAX,
  24 };
  25 #define SEG6_IPTUNNEL_MAX (__SEG6_IPTUNNEL_MAX - 1)
  26
  27 struct seg6_iptunnel_encap {
  28         int mode;
  29         struct ipv6_sr_hdr srh[0];
  30 };
  31
  32 #define SEG6_IPTUN_ENCAP_SIZE(x) ((sizeof(*x)) + (((x)->srh->hdrlen + 1) << 3))
  33
  34 enum {
  35         SEG6_IPTUN_MODE_INLINE,
  36         SEG6_IPTUN_MODE_ENCAP,
  37         SEG6_IPTUN_MODE_L2ENCAP,
  38 };
  39
  40
  41 #endif