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       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