The C and C++ Include Header Files

/usr/include/linux/seg6_iptunnel.h


$ cat -n /usr/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[];
    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		SEG6_IPTUN_MODE_ENCAP_RED,
    39		SEG6_IPTUN_MODE_L2ENCAP_RED,
    40	};
    41	
    42	#endif