1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #ifndef _INET_IP6_H 27 #define _INET_IP6_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 #include <sys/isa_defs.h> 34 35 #ifdef _KERNEL 36 /* icmp6_t is used in the prototype of icmp_inbound_error_fanout_v6() */ 37 #include <netinet/icmp6.h> 38 #endif /* _KERNEL */ 39 40 /* version number for IPv6 - hard to get this one wrong! */ 41 #define IPV6_VERSION 6 42 43 #define IPV6_HDR_LEN 40 44 45 #define IPV6_ADDR_LEN 16 46 47 /* 48 * IPv6 address scopes. The values of these enums also match the scope 49 * field of multicast addresses. 50 */ 51 typedef enum { 52 IP6_SCOPE_INTFLOCAL = 1, /* Multicast addresses only */ 53 IP6_SCOPE_LINKLOCAL, 54 IP6_SCOPE_SUBNETLOCAL, /* Multicast addresses only */ 55 IP6_SCOPE_ADMINLOCAL, /* Multicast addresses only */ 56 IP6_SCOPE_SITELOCAL, 57 IP6_SCOPE_GLOBAL 58 } in6addr_scope_t; 59 60 /* From RFC 3542 - setting for IPV6_USE_MIN_MTU socket option */ 61 #define IPV6_USE_MIN_MTU_MULTICAST -1 /* Default */ 62 #define IPV6_USE_MIN_MTU_NEVER 0 63 #define IPV6_USE_MIN_MTU_ALWAYS 1 64 65 #ifdef _KERNEL 66 67 /* Extract the scope from a multicast address */ 68 #ifdef _BIG_ENDIAN 69 #define IN6_ADDR_MC_SCOPE(addr) \ 70 (((addr)->s6_addr32[0] & 0x000f0000) >> 16) 71 #else 72 #define IN6_ADDR_MC_SCOPE(addr) \ 73 (((addr)->s6_addr32[0] & 0x00000f00) >> 8) 74 #endif 75 76 /* Default IPv4 TTL for IPv6-in-IPv4 encapsulated packets */ 77 #define IPV6_DEFAULT_HOPS 60 /* XXX What should it be? */ 78 79 /* Max IPv6 TTL */ 80 #define IPV6_MAX_HOPS 255 81 82 /* Minimum IPv6 MTU from rfc2460 */ 83 #define IPV6_MIN_MTU 1280 84 85 /* EUI-64 based token length */ 86 #define IPV6_TOKEN_LEN 64 87 88 /* Length of an advertised IPv6 prefix */ 89 #define IPV6_PREFIX_LEN 64 90 91 /* Default and maximum tunnel encapsulation limits. See RFC 2473. */ 92 #define IPV6_DEFAULT_ENCAPLIMIT 4 93 #define IPV6_MAX_ENCAPLIMIT 255 94 95 /* 96 * Minimum and maximum extension header lengths for IPv6. The 8-bit 97 * length field of each extension header (see rfc2460) specifies the 98 * number of 8 octet units of data in the header not including the 99 * first 8 octets. A value of 0 would indicate 8 bytes (0 * 8 + 8), 100 * and 255 would indicate 2048 bytes (255 * 8 + 8). 101 */ 102 #define MIN_EHDR_LEN 8 103 #define MAX_EHDR_LEN 2048 104 105 #ifdef _BIG_ENDIAN 106 #define IPV6_DEFAULT_VERS_AND_FLOW 0x60000000 107 #define IPV6_VERS_AND_FLOW_MASK 0xF0000000 108 #define V6_MCAST 0xFF000000 109 #define V6_LINKLOCAL 0xFE800000 110 111 #define IPV6_FLOW_TCLASS(x) (((x) & IPV6_FLOWINFO_TCLASS) >> 20) 112 #define IPV6_TCLASS_FLOW(f, c) (((f) & ~IPV6_FLOWINFO_TCLASS) |\ 113 ((c) << 20)) 114 #else 115 #define IPV6_DEFAULT_VERS_AND_FLOW 0x00000060 116 #define IPV6_VERS_AND_FLOW_MASK 0x000000F0 117 #define V6_MCAST 0x000000FF 118 #define V6_LINKLOCAL 0x000080FE 119 120 #define IPV6_FLOW_TCLASS(x) ((((x) & 0xf000U) >> 12) |\ 121 (((x) & 0xf) << 4)) 122 #define IPV6_TCLASS_FLOW(f, c) (((f) & ~IPV6_FLOWINFO_TCLASS) |\ 123 ((((c) & 0xf) << 12) |\ 124 (((c) & 0xf0) >> 4))) 125 #endif 126 127 /* 128 * UTILITY MACROS FOR ADDRESSES. 129 */ 130 131 /* 132 * Convert an IPv4 address mask to an IPv6 mask. Pad with 1-bits. 133 */ 134 #define V4MASK_TO_V6(v4, v6) ((v6).s6_addr32[0] = 0xffffffffUL, \ 135 (v6).s6_addr32[1] = 0xffffffffUL, \ 136 (v6).s6_addr32[2] = 0xffffffffUL, \ 137 (v6).s6_addr32[3] = (v4)) 138 139 /* 140 * Convert aligned IPv4-mapped IPv6 address into an IPv4 address. 141 * Note: We use "v6" here in definition of macro instead of "(v6)" 142 * Not possible to use "(v6)" here since macro is used with struct 143 * field names as arguments. 144 */ 145 #define V4_PART_OF_V6(v6) v6.s6_addr32[3] 146 147 #ifdef _BIG_ENDIAN 148 #define V6_OR_V4_INADDR_ANY(a) ((a).s6_addr32[3] == 0 && \ 149 ((a).s6_addr32[2] == 0xffffU || \ 150 (a).s6_addr32[2] == 0) && \ 151 (a).s6_addr32[1] == 0 && \ 152 (a).s6_addr32[0] == 0) 153 154 #else 155 #define V6_OR_V4_INADDR_ANY(a) ((a).s6_addr32[3] == 0 && \ 156 ((a).s6_addr32[2] == 0xffff0000U || \ 157 (a).s6_addr32[2] == 0) && \ 158 (a).s6_addr32[1] == 0 && \ 159 (a).s6_addr32[0] == 0) 160 #endif /* _BIG_ENDIAN */ 161 162 /* IPv4-mapped CLASSD addresses */ 163 #ifdef _BIG_ENDIAN 164 #define IN6_IS_ADDR_V4MAPPED_CLASSD(addr) \ 165 (((addr)->_S6_un._S6_u32[2] == 0x0000ffff) && \ 166 (CLASSD((addr)->_S6_un._S6_u32[3])) && \ 167 ((addr)->_S6_un._S6_u32[1] == 0) && \ 168 ((addr)->_S6_un._S6_u32[0] == 0)) 169 #else /* _BIG_ENDIAN */ 170 #define IN6_IS_ADDR_V4MAPPED_CLASSD(addr) \ 171 (((addr)->_S6_un._S6_u32[2] == 0xffff0000U) && \ 172 (CLASSD((addr)->_S6_un._S6_u32[3])) && \ 173 ((addr)->_S6_un._S6_u32[1] == 0) && \ 174 ((addr)->_S6_un._S6_u32[0] == 0)) 175 #endif /* _BIG_ENDIAN */ 176 177 /* Clear an IPv6 addr */ 178 #define V6_SET_ZERO(a) ((a).s6_addr32[0] = 0, \ 179 (a).s6_addr32[1] = 0, \ 180 (a).s6_addr32[2] = 0, \ 181 (a).s6_addr32[3] = 0) 182 183 /* Mask comparison: is IPv6 addr a, and'ed with mask m, equal to addr b? */ 184 #define V6_MASK_EQ(a, m, b) \ 185 ((((a).s6_addr32[0] & (m).s6_addr32[0]) == (b).s6_addr32[0]) && \ 186 (((a).s6_addr32[1] & (m).s6_addr32[1]) == (b).s6_addr32[1]) && \ 187 (((a).s6_addr32[2] & (m).s6_addr32[2]) == (b).s6_addr32[2]) && \ 188 (((a).s6_addr32[3] & (m).s6_addr32[3]) == (b).s6_addr32[3])) 189 190 #define V6_MASK_EQ_2(a, m, b) \ 191 ((((a).s6_addr32[0] & (m).s6_addr32[0]) == \ 192 ((b).s6_addr32[0] & (m).s6_addr32[0])) && \ 193 (((a).s6_addr32[1] & (m).s6_addr32[1]) == \ 194 ((b).s6_addr32[1] & (m).s6_addr32[1])) && \ 195 (((a).s6_addr32[2] & (m).s6_addr32[2]) == \ 196 ((b).s6_addr32[2] & (m).s6_addr32[2])) && \ 197 (((a).s6_addr32[3] & (m).s6_addr32[3]) == \ 198 ((b).s6_addr32[3] & (m).s6_addr32[3]))) 199 200 /* Copy IPv6 address (s), logically and'ed with mask (m), into (d) */ 201 #define V6_MASK_COPY(s, m, d) \ 202 ((d).s6_addr32[0] = (s).s6_addr32[0] & (m).s6_addr32[0], \ 203 (d).s6_addr32[1] = (s).s6_addr32[1] & (m).s6_addr32[1], \ 204 (d).s6_addr32[2] = (s).s6_addr32[2] & (m).s6_addr32[2], \ 205 (d).s6_addr32[3] = (s).s6_addr32[3] & (m).s6_addr32[3]) 206 207 #define ILL_FRAG_HASH_V6(v6addr, i) \ 208 ((ntohl((v6addr).s6_addr32[3]) ^ (i ^ (i >> 8))) % \ 209 ILL_FRAG_HASH_TBL_COUNT) 210 211 212 /* 213 * GLOBAL EXTERNALS 214 */ 215 extern const in6_addr_t ipv6_all_ones; 216 extern const in6_addr_t ipv6_all_zeros; 217 extern const in6_addr_t ipv6_loopback; 218 extern const in6_addr_t ipv6_all_hosts_mcast; 219 extern const in6_addr_t ipv6_all_rtrs_mcast; 220 extern const in6_addr_t ipv6_all_v2rtrs_mcast; 221 extern const in6_addr_t ipv6_solicited_node_mcast; 222 extern const in6_addr_t ipv6_unspecified_group; 223 224 /* 225 * FUNCTION PROTOTYPES 226 */ 227 228 extern void convert2ascii(char *buf, const in6_addr_t *addr); 229 extern char *inet_ntop(int, const void *, char *, int); 230 extern int inet_pton(int, char *, void *); 231 extern void icmp_param_problem_nexthdr_v6(mblk_t *, boolean_t, 232 ip_recv_attr_t *); 233 extern void icmp_pkt2big_v6(mblk_t *, uint32_t, boolean_t, 234 ip_recv_attr_t *); 235 extern void icmp_time_exceeded_v6(mblk_t *, uint8_t, boolean_t, 236 ip_recv_attr_t *); 237 extern void icmp_unreachable_v6(mblk_t *, uint8_t, boolean_t, 238 ip_recv_attr_t *); 239 extern mblk_t *icmp_inbound_v6(mblk_t *, ip_recv_attr_t *); 240 extern void icmp_inbound_error_fanout_v6(mblk_t *, icmp6_t *, 241 ip_recv_attr_t *); 242 extern void icmp_update_out_mib_v6(ill_t *, icmp6_t *); 243 244 extern boolean_t conn_wantpacket_v6(conn_t *, ip_recv_attr_t *, ip6_t *); 245 246 extern in6addr_scope_t ip_addr_scope_v6(const in6_addr_t *); 247 extern void ip_build_hdrs_v6(uchar_t *, uint_t, const ip_pkt_t *, uint8_t, 248 uint32_t); 249 extern void ip_fanout_udp_multi_v6(mblk_t *, ip6_t *, uint16_t, uint16_t, 250 ip_recv_attr_t *); 251 extern void ip_fanout_send_icmp_v6(mblk_t *, uint_t, uint8_t, 252 ip_recv_attr_t *); 253 extern void ip_fanout_proto_v6(mblk_t *, ip6_t *, ip_recv_attr_t *); 254 extern int ip_find_hdr_v6(mblk_t *, ip6_t *, boolean_t, ip_pkt_t *, 255 uint8_t *); 256 extern in6_addr_t ip_get_dst_v6(ip6_t *, const mblk_t *, boolean_t *); 257 extern ip6_rthdr_t *ip_find_rthdr_v6(ip6_t *, uint8_t *); 258 extern boolean_t ip_hdr_length_nexthdr_v6(mblk_t *, ip6_t *, 259 uint16_t *, uint8_t **); 260 extern int ip_hdr_length_v6(mblk_t *, ip6_t *); 261 extern uint32_t ip_massage_options_v6(ip6_t *, ip6_rthdr_t *, netstack_t *); 262 extern void ip_forward_xmit_v6(nce_t *, mblk_t *, ip6_t *, ip_recv_attr_t *, 263 uint32_t, uint32_t); 264 extern mblk_t *ip_fraghdr_add_v6(mblk_t *, uint32_t, ip_xmit_attr_t *); 265 extern int ip_fragment_v6(mblk_t *, nce_t *, iaflags_t, uint_t, uint32_t, 266 uint32_t, zoneid_t, zoneid_t, pfirepostfrag_t postfragfn, 267 uintptr_t *ixa_cookie); 268 extern int ip_process_options_v6(mblk_t *, ip6_t *, 269 uint8_t *, uint_t, uint8_t, ip_recv_attr_t *); 270 extern void ip_process_rthdr(mblk_t *, ip6_t *, ip6_rthdr_t *, 271 ip_recv_attr_t *); 272 extern int ip_total_hdrs_len_v6(const ip_pkt_t *); 273 extern mblk_t *ipsec_early_ah_v6(mblk_t *, ip_recv_attr_t *); 274 extern int ipsec_ah_get_hdr_size_v6(mblk_t *, boolean_t); 275 extern void ip_send_potential_redirect_v6(mblk_t *, ip6_t *, ire_t *, 276 ip_recv_attr_t *); 277 extern void ip_rput_v6(queue_t *, mblk_t *); 278 extern mblk_t *mld_input(mblk_t *, ip_recv_attr_t *); 279 extern void mld_joingroup(ilm_t *); 280 extern void mld_leavegroup(ilm_t *); 281 extern void mld_timeout_handler(void *); 282 283 extern void pr_addr_dbg(char *, int, const void *); 284 extern void *ip6_kstat_init(netstackid_t, ip6_stat_t *); 285 extern void ip6_kstat_fini(netstackid_t, kstat_t *); 286 extern size_t ip6_get_src_preferences(ip_xmit_attr_t *, uint32_t *); 287 extern int ip6_set_src_preferences(ip_xmit_attr_t *, uint32_t); 288 289 #endif /* _KERNEL */ 290 291 #ifdef __cplusplus 292 } 293 #endif 294 295 #endif /* _INET_IP6_H */ 296
Indexes created Sat Nov 28 12:39:51 UTC 2009
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