src/router.h

   1 /**
   2  * Copyright (C) 2012-2013 Steven Barth <steven@midlink.org>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License v2 as published by
   6  * the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11  * GNU General Public License for more details.
  12  *
  13  */
  14
  15 #pragma once
  16 #include <stdint.h>
  17 #include <netinet/in.h>
  18 #include <netinet/icmp6.h>
  19
  20 struct icmpv6_opt {
  21         uint8_t type;
  22         uint8_t len;
  23         uint8_t data[6];
  24 };
  25
  26
  27 #define icmpv6_for_each_option(opt, start, end)\
  28         for (opt = (struct icmpv6_opt*)(start);\
  29         (void*)(opt + 1) <= (void*)(end) && opt->len > 0 &&\
  30         (void*)(opt + opt->len) <= (void*)(end); opt += opt->len)
  31
  32
  33 #define MaxRtrAdvInterval       1800
  34 #define MinRtrAdvInterval       3
  35
  36 #define ND_RA_FLAG_PROXY        0x4
  37 #define ND_RA_PREF_HIGH         (1 << 3)
  38 #define ND_RA_PREF_LOW          (3 << 3)