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> 174 175 extern void icmpv6_send(struct sk_buff *skb, 176 u8 type, u8 code, 177 __u32 info); 178 179 extern int icmpv6_init(void); 180 extern int icmpv6_err_convert(u8 type, u8 code, 181 int *err); 182 extern void icmpv6_cleanup(void); 183 extern void icmpv6_param_prob(struct sk_buff *skb, 184 u8 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 197