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 #endif 41
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