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   1 #ifndef _LINUX_ICMPV6_H
   2 #define _LINUX_ICMPV6_H
   3
   4 #include <asm/byteorder.h>
   5
   6 struct icmp6hdr {
   7
   8         __u8            icmp6_type;
   9         __u8            icmp6_code;
  10         __sum16         icmp6_cksum;
  11
  12
  13         union {
  14                 __be32                  un_data32[1];
  15                 __be16                  un_data16[2];
  16                 __u8                    un_data8[4];
  17
  18                 struct icmpv6_echo {
  19                         __be16          identifier;
  20                         __be16          sequence;
  21                 } u_echo;
  22
  23                 struct icmpv6_nd_advt {
  24 #if defined(__LITTLE_ENDIAN_BITFIELD)
  25                         __u32           reserved:5,
  26                                         override:1,
  27                                         solicited:1,
  28                                         router:1,
  29                                         reserved2:24;
  30 #elif defined(__BIG_ENDIAN_BITFIELD)
  31                         __u32           router:1,
  32                                         solicited:1,
  33                                         override:1,
  34                                         reserved:29;
  35 #else
  36 #error  "Please fix <asm/byteorder.h>"
  37 #endif
  38                 } u_nd_advt;
  39
  40                 struct icmpv6_nd_ra {
  41                         __u8            hop_limit;
  42 #if defined(__LITTLE_ENDIAN_BITFIELD)
  43                         __u8            reserved:4,
  44                                         router_pref:2,
  45                                         other:1,
  46                                         managed:1;
  47
  48 #elif defined(__BIG_ENDIAN_BITFIELD)
  49                         __u8            managed:1,
  50                                         other:1,
  51                                         router_pref:2,
  52                                         reserved:4;
  53 #else
  54 #error  "Please fix <asm/byteorder.h>"
  55 #endif
  56                         __be16          rt_lifetime;
  57                 } u_nd_ra;
  58
  59         } icmp6_dataun;
  60
  61 #define icmp6_identifier        icmp6_dataun.u_echo.identifier
  62 #define icmp6_sequence          icmp6_dataun.u_echo.sequence
  63 #define icmp6_pointer           icmp6_dataun.un_data32[0]
  64 #define icmp6_mtu               icmp6_dataun.un_data32[0]
  65 #define icmp6_unused            icmp6_dataun.un_data32[0]
  66 #define icmp6_maxdelay          icmp6_dataun.un_data16[0]
  67 #define icmp6_router            icmp6_dataun.u_nd_advt.router
  68 #define icmp6_solicited         icmp6_dataun.u_nd_advt.solicited
  69 #define icmp6_override          icmp6_dataun.u_nd_advt.override
  70 #define icmp6_ndiscreserved     icmp6_dataun.u_nd_advt.reserved
  71 #define icmp6_hop_limit         icmp6_dataun.u_nd_ra.hop_limit
  72 #define icmp6_addrconf_managed  icmp6_dataun.u_nd_ra.managed
  73 #define icmp6_addrconf_other    icmp6_dataun.u_nd_ra.other
  74 #define icmp6_rt_lifetime       icmp6_dataun.u_nd_ra.rt_lifetime
  75 #define icmp6_router_pref       icmp6_dataun.u_nd_ra.router_pref
  76 };
  77
  78 #ifdef __KERNEL__
  79 #include <linux/skbuff.h>
  80
  81 static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb)
  82 {
  83         return (struct icmp6hdr *)skb_transport_header(skb);
  84 }
  85 #endif
  86
  87 #define ICMPV6_ROUTER_PREF_LOW          0x3
  88 #define ICMPV6_ROUTER_PREF_MEDIUM       0x0
  89 #define ICMPV6_ROUTER_PREF_HIGH         0x1
  90 #define ICMPV6_ROUTER_PREF_INVALID      0x2
  91
  92 #define ICMPV6_DEST_UNREACH             1
  93 #define ICMPV6_PKT_TOOBIG               2
  94 #define ICMPV6_TIME_EXCEED              3
  95 #define ICMPV6_PARAMPROB                4
  96
  97 #define ICMPV6_INFOMSG_MASK             0x80
  98
  99 #define ICMPV6_ECHO_REQUEST             128
 100 #define ICMPV6_ECHO_REPLY               129
 101 #define ICMPV6_MGM_QUERY                130
 102 #define ICMPV6_MGM_REPORT               131
 103 #define ICMPV6_MGM_REDUCTION            132
 104
 105 #define ICMPV6_NI_QUERY                 139
 106 #define ICMPV6_NI_REPLY                 140
 107
 108 #define ICMPV6_MLD2_REPORT              143
 109
 110 #define ICMPV6_DHAAD_REQUEST            144
 111 #define ICMPV6_DHAAD_REPLY              145
 112 #define ICMPV6_MOBILE_PREFIX_SOL        146
 113 #define ICMPV6_MOBILE_PREFIX_ADV        147
 114
 115 /*
 116  *      Codes for Destination Unreachable
 117  */
 118 #define ICMPV6_NOROUTE                  0
 119 #define ICMPV6_ADM_PROHIBITED           1
 120 #define ICMPV6_NOT_NEIGHBOUR            2
 121 #define ICMPV6_ADDR_UNREACH             3
 122 #define ICMPV6_PORT_UNREACH             4
 123
 124 /*
 125  *      Codes for Time Exceeded
 126  */
 127 #define ICMPV6_EXC_HOPLIMIT             0
 128 #define ICMPV6_EXC_FRAGTIME             1
 129
 130 /*
 131  *      Codes for Parameter Problem
 132  */
 133 #define ICMPV6_HDR_FIELD                0
 134 #define ICMPV6_UNK_NEXTHDR              1
 135 #define ICMPV6_UNK_OPTION               2
 136
 137 /*
 138  *      constants for (set|get)sockopt
 139  */
 140
 141 #define ICMPV6_FILTER                   1
 142
 143 /*
 144  *      ICMPV6 filter
 145  */
 146
 147 #define ICMPV6_FILTER_BLOCK             1
 148 #define ICMPV6_FILTER_PASS              2
 149 #define ICMPV6_FILTER_BLOCKOTHERS       3
 150 #define ICMPV6_FILTER_PASSONLY          4
 151
 152 struct icmp6_filter {
 153         __u32           data[8];
 154 };
 155
 156 /*
 157  *      Definitions for MLDv2
 158  */
 159 #define MLD2_MODE_IS_INCLUDE    1
 160 #define MLD2_MODE_IS_EXCLUDE    2
 161 #define MLD2_CHANGE_TO_INCLUDE  3
 162 #define MLD2_CHANGE_TO_EXCLUDE  4
 163 #define MLD2_ALLOW_NEW_SOURCES  5
 164 #define MLD2_BLOCK_OLD_SOURCES  6
 165
 166 #define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } }
 167
 168 #ifdef __KERNEL__
 169
 170 #include <linux/netdevice.h>
 171 #include <linux/skbuff.h>
 172
 173
 174 extern void                             icmpv6_send(struct sk_buff *skb,
 175                                                     int type, int code,
 176                                                     __u32 info,
 177                                                     struct net_device *dev);
 178
 179 extern int                              icmpv6_init(void);
 180 extern int                              icmpv6_err_convert(int type, int code,
 181                                                            int *err);
 182 extern void                             icmpv6_cleanup(void);
 183 extern void                             icmpv6_param_prob(struct sk_buff *skb,
 184                                                           int code, int pos);
 185
 186 struct flowi;
 187 struct in6_addr;
 188 extern void                             icmpv6_flow_init(struct sock *sk,
 189                                                          struct flowi *fl,
 190                                                          u8 type,
 191                                                          const struct in6_addr *saddr,
 192                                                          const struct in6_addr *daddr,
 193                                                          int oif);
 194 #endif
 195
 196 #endif