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