Release 4.15 include/uapi/linux/seg6_iptunnel.h

/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/*
 *  SR-IPv6 implementation
 *
 *  Author:
 *  David Lebrun <david.lebrun@uclouvain.be>
 *
 *
 *  This program is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU General Public License
 *      as published by the Free Software Foundation; either version
 *      2 of the License, or (at your option) any later version.
 */

#ifndef _UAPI_LINUX_SEG6_IPTUNNEL_H

#define _UAPI_LINUX_SEG6_IPTUNNEL_H

#include <linux/seg6.h>		/* For struct ipv6_sr_hdr. */

enum {
	
SEG6_IPTUNNEL_UNSPEC,
	
SEG6_IPTUNNEL_SRH,
	
__SEG6_IPTUNNEL_MAX,
};

#define SEG6_IPTUNNEL_MAX (__SEG6_IPTUNNEL_MAX - 1)


struct seg6_iptunnel_encap {
	
int mode;
	
struct ipv6_sr_hdr srh[0];
};


#define SEG6_IPTUN_ENCAP_SIZE(x) ((sizeof(*x)) + (((x)->srh->hdrlen + 1) << 3))

enum {
	
SEG6_IPTUN_MODE_INLINE,
	
SEG6_IPTUN_MODE_ENCAP,
	
SEG6_IPTUN_MODE_L2ENCAP,
};

#ifdef __KERNEL__



static inline size_t seg6_lwt_headroom(struct seg6_iptunnel_encap *tuninfo)
{
	int head = 0;

	switch (tuninfo->mode) {
	case SEG6_IPTUN_MODE_INLINE:
		break;
	case SEG6_IPTUN_MODE_ENCAP:
		head = sizeof(struct ipv6hdr);
		break;
	case SEG6_IPTUN_MODE_L2ENCAP:
		return 0;
	}

	return ((tuninfo->srh->hdrlen + 1) << 3) + head;
}

Contributors
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David Lebrun
64
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2
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Total
64
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2
100.00%

#endif

#endif
Overall Contributors
Person
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Prop
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David Lebrun
122
96.06%
3
60.00%
Dmitry V. Levin
4
3.15%
1
20.00%
Greg Kroah-Hartman
1
0.79%
1
20.00%
Total
127
100.00%
5
100.00%
Directory: include/uapi/linux

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