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   1 #ifndef _LINUX_ICMPV6_H
   2 #define _LINUX_ICMPV6_H
   3
   4 #include <linux/types.h>
   5 #include <asm/byteorder.h>
   6
   7 struct icmp6hdr {
   8
   9         __u8            icmp6_type;
  10         __u8            icmp6_code;
  11         __sum16         icmp6_cksum;
  12
  13
  14         union {
  15                 __be32                  un_data32[1];
  16                 __be16                  un_data16[2];
  17                 __u8                    un_data8[4];
  18
  19                 struct icmpv6_echo {
  20                         __be16          identifier;
  21                         __be16          sequence;
  22                 } u_echo;
  23
  24                 struct icmpv6_nd_advt {
  25 #if defined(__LITTLE_ENDIAN_BITFIELD)
  26                         __u32           reserved:5,
  27                                         override:1,
  28                                         solicited:1,
  29                                         router:1,
  30                                         reserved2:24;
  31 #elif defined(__BIG_ENDIAN_BITFIELD)
  32                         __u32           router:1,
  33                                         solicited:1,
  34                                         override:1,
  35                                         reserved:29;
  36 #else
  37 #error  "Please fix <asm/byteorder.h>"
  38 #endif
  39                 } u_nd_advt;
  40
  41                 struct icmpv6_nd_ra {
  42                         __u8            hop_limit;
  43 #if defined(__LITTLE_ENDIAN_BITFIELD)
  44                         __u8            reserved:3,
  45                                         router_pref:2,
  46                                         home_agent:1,
  47                                         other:1,
  48                                         managed:1;
  49
  50 #elif defined(__BIG_ENDIAN_BITFIELD)
  51                         __u8            managed:1,
  52                                         other:1,
  53                                         home_agent:1,
  54                                         router_pref:2,
  55                                         reserved:3;
  56 #else
  57 #error  "Please fix <asm/byteorder.h>"
  58 #endif
  59                         __be16          rt_lifetime;
  60                 } u_nd_ra;
  61
  62         } icmp6_dataun;
  63
  64 #define icmp6_identifier        icmp6_dataun.u_echo.identifier
  65 #define icmp6_sequence          icmp6_dataun.u_echo.sequence
  66 #define icmp6_pointer           icmp6_dataun.un_data32[0]
  67 #define icmp6_mtu               icmp6_dataun.un_data32[0]
  68 #define icmp6_unused            icmp6_dataun.un_data32[0]
  69 #define icmp6_maxdelay          icmp6_dataun.un_data16[0]
  70 #define icmp6_router            icmp6_dataun.u_nd_advt.router
  71 #define icmp6_solicited         icmp6_dataun.u_nd_advt.solicited
  72 #define icmp6_override          icmp6_dataun.u_nd_advt.override
  73 #define icmp6_ndiscreserved     icmp6_dataun.u_nd_advt.reserved
  74 #define icmp6_hop_limit         icmp6_dataun.u_nd_ra.hop_limit
  75 #define icmp6_addrconf_managed  icmp6_dataun.u_nd_ra.managed
  76 #define icmp6_addrconf_other    icmp6_dataun.u_nd_ra.other
  77 #define icmp6_rt_lifetime       icmp6_dataun.u_nd_ra.rt_lifetime
  78 #define icmp6_router_pref       icmp6_dataun.u_nd_ra.router_pref
  79 };
  80
  81 #ifdef __KERNEL__
  82 #include <linux/skbuff.h>
  83
  84 static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff *skb)
  85 {
  86         return (struct icmp6hdr *)skb_transport_header(skb);
  87 }
  88 #endif
  89
  90 #define ICMPV6_ROUTER_PREF_LOW          0x3
  91 #define ICMPV6_ROUTER_PREF_MEDIUM       0x0
  92 #define ICMPV6_ROUTER_PREF_HIGH         0x1
  93 #define ICMPV6_ROUTER_PREF_INVALID      0x2
  94
  95 #define ICMPV6_DEST_UNREACH             1
  96 #define ICMPV6_PKT_TOOBIG               2
  97 #define ICMPV6_TIME_EXCEED              3
  98 #define ICMPV6_PARAMPROB                4
  99
 100 #define ICMPV6_INFOMSG_MASK             0x80
 101
 102 #define ICMPV6_ECHO_REQUEST             128
 103 #define ICMPV6_ECHO_REPLY               129
 104 #define ICMPV6_MGM_QUERY                130
 105 #define ICMPV6_MGM_REPORT               131
 106 #define ICMPV6_MGM_REDUCTION            132
 107
 108 #define ICMPV6_NI_QUERY                 139
 109 #define ICMPV6_NI_REPLY                 140
 110
 111 #define ICMPV6_MLD2_REPORT              143
 112
 113 #define ICMPV6_DHAAD_REQUEST            144
 114 #define ICMPV6_DHAAD_REPLY              145
 115 #define ICMPV6_MOBILE_PREFIX_SOL        146
 116 #define ICMPV6_MOBILE_PREFIX_ADV        147
 117
 118 /*
 119  *      Codes for Destination Unreachable
 120  */
 121 #define ICMPV6_NOROUTE                  0
 122 #define ICMPV6_ADM_PROHIBITED           1
 123 #define ICMPV6_NOT_NEIGHBOUR            2
 124 #define ICMPV6_ADDR_UNREACH             3
 125 #define ICMPV6_PORT_UNREACH             4
 126
 127 /*
 128  *      Codes for Time Exceeded
 129  */
 130 #define ICMPV6_EXC_HOPLIMIT             0
 131 #define ICMPV6_EXC_FRAGTIME             1
 132
 133 /*
 134  *      Codes for Parameter Problem
 135  */
 136 #define ICMPV6_HDR_FIELD                0
 137 #define ICMPV6_UNK_NEXTHDR              1
 138 #define ICMPV6_UNK_OPTION               2
 139
 140 /*
 141  *      constants for (set|get)sockopt
 142  */
 143
 144 #define ICMPV6_FILTER                   1
 145
 146 /*
 147  *      ICMPV6 filter
 148  */
 149
 150 #define ICMPV6_FILTER_BLOCK             1
 151 #define ICMPV6_FILTER_PASS              2
 152 #define ICMPV6_FILTER_BLOCKOTHERS       3
 153 #define ICMPV6_FILTER_PASSONLY          4
 154
 155 struct icmp6_filter {
 156         __u32           data[8];
 157 };
 158
 159 /*
 160  *      Definitions for MLDv2
 161  */
 162 #define MLD2_MODE_IS_INCLUDE    1
 163 #define MLD2_MODE_IS_EXCLUDE    2
 164 #define MLD2_CHANGE_TO_INCLUDE  3
 165 #define MLD2_CHANGE_TO_EXCLUDE  4
 166 #define MLD2_ALLOW_NEW_SOURCES  5
 167 #define MLD2_BLOCK_OLD_SOURCES  6
 168
 169 #define MLD2_ALL_MCR_INIT { { { 0xff,0x02,0,0,0,0,0,0,0,0,0,0,0,0,0,0x16 } } }
 170
 171 #ifdef __KERNEL__
 172
 173 #include <linux/netdevice.h>
 174 #include <linux/skbuff.h>
 175
 176
 177 extern void                             icmpv6_send(struct sk_buff *skb,
 178                                                     int type, int code,
 179                                                     __u32 info,
 180                                                     struct net_device *dev);
 181
 182 extern int                              icmpv6_init(void);
 183 extern int                              icmpv6_err_convert(int type, int code,
 184                                                            int *err);
 185 extern void                             icmpv6_cleanup(void);
 186 extern void                             icmpv6_param_prob(struct sk_buff *skb,
 187                                                           int code, int pos);
 188
 189 struct flowi;
 190 struct in6_addr;
 191 extern void                             icmpv6_flow_init(struct sock *sk,
 192                                                          struct flowi *fl,
 193                                                          u8 type,
 194                                                          const struct in6_addr *saddr,
 195                                                          const struct in6_addr *daddr,
 196                                                          int oif);
 197 #endif
 198
 199 #endif