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 (c) 1991, 2010, Oracle and/or its affiliates. All rights reserved. 23 */ 24 /* Copyright (c) 1990 Mentat Inc. */ 25 26 #ifndef _INET_IP_IRE_H 27 #define _INET_IP_IRE_H 28 29 #ifdef __cplusplus 30 extern "C" { 31 #endif 32 33 #define IPV6_LL_PREFIXLEN 10 /* Number of bits in link-local pref */ 34 35 #define IP_CACHE_TABLE_SIZE 256 36 #define IP_MASK_TABLE_SIZE (IP_ABITS + 1) /* 33 ptrs */ 37 38 #define IP6_FTABLE_HASH_SIZE 32 /* size of each hash table in ptrs */ 39 #define IP6_CACHE_TABLE_SIZE 256 40 #define IP6_MASK_TABLE_SIZE (IPV6_ABITS + 1) /* 129 ptrs */ 41 42 /* 43 * We use the common modulo hash function. In ip_ire_init(), we make 44 * sure that the cache table size is always a power of 2. That's why 45 * we can use & instead of %. Also note that we try hard to make sure 46 * the lower bits of an address capture most info from the whole address. 47 * The reason being that since our hash table is probably a lot smaller 48 * than 2^32 buckets so the lower bits are the most important. 49 */ 50 #define IRE_ADDR_HASH(addr, table_size) \ 51 (((addr) ^ ((addr) >> 8) ^ ((addr) >> 16) ^ ((addr) >> 24)) & \ 52 ((table_size) - 1)) 53 54 /* 55 * To make a byte-order neutral hash for IPv6, just take all the 56 * bytes in the bottom 32 bits into account. 57 */ 58 #define IRE_ADDR_HASH_V6(addr, table_size) \ 59 IRE_ADDR_HASH((addr).s6_addr32[3], table_size) 60 61 /* 62 * This assumes that the ftable size is a power of 2. 63 * We include some high-order bytes to avoid all IRE_LOCALs in the same 64 * bucket for performance reasons. 65 */ 66 #define IRE_ADDR_MASK_HASH_V6(addr, mask, table_size) \ 67 ((((addr).s6_addr8[0] & (mask).s6_addr8[0]) ^ \ 68 ((addr).s6_addr8[1] & (mask).s6_addr8[1]) ^ \ 69 ((addr).s6_addr8[6] & (mask).s6_addr8[6]) ^ \ 70 ((addr).s6_addr8[7] & (mask).s6_addr8[7]) ^ \ 71 ((addr).s6_addr8[8] & (mask).s6_addr8[8]) ^ \ 72 ((addr).s6_addr8[9] & (mask).s6_addr8[9]) ^ \ 73 ((addr).s6_addr8[10] & (mask).s6_addr8[10]) ^ \ 74 ((addr).s6_addr8[13] & (mask).s6_addr8[13]) ^ \ 75 ((addr).s6_addr8[14] & (mask).s6_addr8[14]) ^ \ 76 ((addr).s6_addr8[15] & (mask).s6_addr8[15])) & ((table_size) - 1)) 77 78 #define IRE_HIDDEN_TYPE(ire_type) ((ire_type) & \ 79 (IRE_HOST | IRE_PREFIX | IRE_DEFAULT | IRE_IF_ALL | IRE_BROADCAST)) 80 81 /* 82 * match parameter definitions for IRE lookup routines. 83 */ 84 #define MATCH_IRE_DSTONLY 0x0000 /* Match just the address */ 85 #define MATCH_IRE_TYPE 0x0001 /* Match IRE type */ 86 #define MATCH_IRE_MASK 0x0002 /* Match IRE mask */ 87 #define MATCH_IRE_SHORTERMASK 0x0004 /* A mask shorter than the argument */ 88 #define MATCH_IRE_GW 0x0008 /* Match IRE gateway */ 89 #define MATCH_IRE_ILL 0x0010 /* Match IRE on the ill */ 90 #define MATCH_IRE_ZONEONLY 0x0020 /* Match IREs in specified zone, ie */ 91 /* don't match IRE_LOCALs from other */ 92 /* zones or shared IREs */ 93 #define MATCH_IRE_SECATTR 0x0040 /* Match gateway security attributes */ 94 #define MATCH_IRE_TESTHIDDEN 0x0080 /* Match ire_testhidden IREs */ 95 #define MATCH_IRE_SRC_ILL 0x0100 /* ire_ill uses a src address on ill */ 96 #define MATCH_IRE_DIRECT 0x0200 /* Don't match indirect routes */ 97 98 #define MAX_IRE_RECURSION 4 /* Max IREs in ire_route_recursive */ 99 100 101 /* 102 * We use atomics so that we get an accurate accounting on the ires. 103 * Otherwise we can't determine leaks correctly. 104 */ 105 #define BUMP_IRE_STATS(ire_stats, x) atomic_add_64(&(ire_stats).x, 1) 106 107 #ifdef _KERNEL 108 struct ts_label_s; 109 struct nce_s; 110 /* 111 * structure for passing args between ire_ftable_lookup and ire_find_best_route 112 */ 113 typedef struct ire_ftable_args_s { 114 in6_addr_t ift_addr_v6; 115 in6_addr_t ift_mask_v6; 116 in6_addr_t ift_gateway_v6; 117 #define ift_addr V4_PART_OF_V6(ift_addr_v6) 118 #define ift_mask V4_PART_OF_V6(ift_mask_v6) 119 #define ift_gateway V4_PART_OF_V6(ift_gateway_v6) 120 int ift_type; 121 const ill_t *ift_ill; 122 zoneid_t ift_zoneid; 123 const ts_label_t *ift_tsl; 124 int ift_flags; 125 ire_t *ift_best_ire; 126 } ire_ftable_args_t; 127 128 extern ipaddr_t ip_plen_to_mask(uint_t); 129 extern in6_addr_t *ip_plen_to_mask_v6(uint_t, in6_addr_t *); 130 131 extern int ip_ire_advise(queue_t *, mblk_t *, cred_t *); 132 extern int ip_ire_delete(queue_t *, mblk_t *, cred_t *); 133 extern void ip_ire_reclaim(void *); 134 135 extern int ip_mask_to_plen(ipaddr_t); 136 extern int ip_mask_to_plen_v6(const in6_addr_t *); 137 138 extern ire_t *ire_add(ire_t *); 139 extern ire_t *ire_add_v6(ire_t *); 140 extern int ire_atomic_start(irb_t *irb_ptr, ire_t *ire); 141 extern void ire_atomic_end(irb_t *irb_ptr, ire_t *ire); 142 143 extern ire_t *ire_create(uchar_t *, uchar_t *, uchar_t *, 144 ushort_t, ill_t *, zoneid_t, uint_t, tsol_gc_t *, ip_stack_t *); 145 146 extern ire_t **ire_create_bcast(ill_t *, ipaddr_t, zoneid_t, ire_t **); 147 extern ire_t *ire_create_if_clone(ire_t *, const in6_addr_t *, uint_t *); 148 extern ire_t *ire_lookup_bcast(ill_t *, ipaddr_t, zoneid_t); 149 extern int ire_init_v4(ire_t *, uchar_t *, uchar_t *, uchar_t *, 150 ushort_t, ill_t *, zoneid_t, uint_t, tsol_gc_t *, ip_stack_t *); 151 extern int ire_init_v6(ire_t *, const in6_addr_t *, const in6_addr_t *, 152 const in6_addr_t *, ushort_t, ill_t *, zoneid_t, uint_t, tsol_gc_t *, 153 ip_stack_t *); 154 155 extern int ire_init_common(ire_t *, ushort_t, ill_t *, zoneid_t, uint_t, 156 uchar_t, tsol_gc_t *, ip_stack_t *); 157 158 extern ire_t *ire_create_v6(const in6_addr_t *, const in6_addr_t *, 159 const in6_addr_t *, ushort_t, ill_t *, zoneid_t, uint_t, 160 tsol_gc_t *, ip_stack_t *); 161 162 extern void ire_delete(ire_t *); 163 extern void ire_delete_v6(ire_t *); 164 165 extern boolean_t ire_dep_build(ire_t *[], uint_t [], uint_t); 166 extern void ire_dep_delete_if_clone(ire_t *); 167 extern void ire_dep_incr_generation(ire_t *); 168 extern void ire_dep_remove(ire_t *); 169 extern void ire_dep_unbuild(ire_t *[], uint_t); 170 extern uint_t ire_dep_validate_generations(ire_t *); 171 extern void ire_dep_invalidate_generations(ire_t *); 172 extern boolean_t ire_determine_nce_capable(ire_t *); 173 174 extern void ire_flush_cache_v4(ire_t *, int); 175 extern void ire_flush_cache_v6(ire_t *, int); 176 177 extern ire_t *ire_ftable_lookup_v4(ipaddr_t, ipaddr_t, ipaddr_t, int, 178 const ill_t *, zoneid_t, const struct ts_label_s *, int, uint32_t, 179 ip_stack_t *, uint_t *); 180 extern ire_t *ire_ftable_lookup_v6(const in6_addr_t *, const in6_addr_t *, 181 const in6_addr_t *, int, const ill_t *, zoneid_t, 182 const struct ts_label_s *, int, uint32_t, ip_stack_t *, uint_t *); 183 184 extern ire_t *ire_ftable_lookup_simple_v4(ipaddr_t, uint32_t, ip_stack_t *, 185 uint_t *); 186 extern ire_t *ire_ftable_lookup_simple_v6(const in6_addr_t *, uint32_t, 187 ip_stack_t *, uint_t *); 188 189 extern boolean_t ire_gateway_ok_zone_v4(ipaddr_t, zoneid_t, ill_t *, 190 const ts_label_t *, ip_stack_t *, boolean_t); 191 extern boolean_t ire_gateway_ok_zone_v6(const in6_addr_t *, zoneid_t, ill_t *, 192 const ts_label_t *, ip_stack_t *, boolean_t); 193 194 extern ire_t *ire_alt_local(ire_t *, zoneid_t, const ts_label_t *, 195 const ill_t *, uint_t *); 196 197 extern ill_t *ire_lookup_multi_ill_v4(ipaddr_t, zoneid_t, ip_stack_t *, 198 boolean_t *, ipaddr_t *); 199 extern ill_t *ire_lookup_multi_ill_v6(const in6_addr_t *, zoneid_t, 200 ip_stack_t *, boolean_t *, in6_addr_t *); 201 202 extern ire_t *ire_nexthop(ire_t *); 203 extern ill_t *ire_nexthop_ill(ire_t *); 204 extern ill_t *ire_nce_ill(ire_t *); 205 206 extern ire_t *ire_reject(ip_stack_t *, boolean_t); 207 extern ire_t *ire_blackhole(ip_stack_t *, boolean_t); 208 extern ire_t *ire_multicast(ill_t *); 209 210 /* The different ire_recvfn functions */ 211 extern void ire_recv_forward_v4(ire_t *, mblk_t *, void *, 212 ip_recv_attr_t *); 213 extern void ire_recv_noroute_v4(ire_t *, mblk_t *, void *, 214 ip_recv_attr_t *); 215 extern void ire_recv_broadcast_v4(ire_t *, mblk_t *, void *, 216 ip_recv_attr_t *); 217 extern void ire_recv_multicast_v4(ire_t *, mblk_t *, void *, 218 ip_recv_attr_t *); 219 extern void ire_recv_multirt_v4(ire_t *, mblk_t *, void *, 220 ip_recv_attr_t *); 221 extern void ire_recv_loopback_v4(ire_t *, mblk_t *, void *, 222 ip_recv_attr_t *); 223 extern void ire_recv_local_v4(ire_t *, mblk_t *, void *, 224 ip_recv_attr_t *); 225 extern void ire_recv_noaccept_v4(ire_t *, mblk_t *, void *, 226 ip_recv_attr_t *); 227 228 extern void ire_recv_forward_v6(ire_t *, mblk_t *, void *, 229 ip_recv_attr_t *); 230 extern void ire_recv_noroute_v6(ire_t *, mblk_t *, void *, 231 ip_recv_attr_t *); 232 extern void ire_recv_multicast_v6(ire_t *, mblk_t *, void *, 233 ip_recv_attr_t *); 234 extern void ire_recv_multirt_v6(ire_t *, mblk_t *, void *, 235 ip_recv_attr_t *); 236 extern void ire_recv_loopback_v6(ire_t *, mblk_t *, void *, 237 ip_recv_attr_t *); 238 extern void ire_recv_local_v6(ire_t *, mblk_t *, void *, ip_recv_attr_t *); 239 extern void ire_recv_noaccept_v6(ire_t *, mblk_t *, void *, 240 ip_recv_attr_t *); 241 242 extern void irb_refhold(irb_t *); 243 extern void irb_refhold_locked(irb_t *); 244 extern void irb_refrele(irb_t *); 245 extern void irb_increment_generation(irb_t *); 246 247 extern void ire_refhold(ire_t *); 248 extern void ire_refhold_notr(ire_t *); 249 extern void ire_refhold_locked(ire_t *); 250 extern void ire_refrele(ire_t *); 251 extern void ire_refrele_notr(ire_t *); 252 extern void ire_make_condemned(ire_t *); 253 extern boolean_t ire_no_good(ire_t *); 254 extern nce_t *ire_handle_condemned_nce(nce_t *, ire_t *, ipha_t *, ip6_t *, 255 boolean_t); 256 257 extern ire_t *ire_round_robin(irb_t *, ire_ftable_args_t *, uint_t, 258 ire_t *, ip_stack_t *); 259 260 extern ire_t *ire_route_recursive_v4(ipaddr_t, uint_t, const ill_t *, 261 zoneid_t, const ts_label_t *, uint_t, uint_t, uint32_t, ip_stack_t *, 262 ipaddr_t *, tsol_ire_gw_secattr_t **, uint_t *); 263 extern ire_t *ire_route_recursive_v6(const in6_addr_t *, uint_t, 264 const ill_t *, zoneid_t, const ts_label_t *, uint_t, uint_t, uint32_t, 265 ip_stack_t *, in6_addr_t *, tsol_ire_gw_secattr_t **, uint_t *); 266 extern ire_t *ire_route_recursive_dstonly_v4(ipaddr_t, uint_t, 267 uint32_t, ip_stack_t *); 268 extern ire_t *ire_route_recursive_dstonly_v6(const in6_addr_t *, uint_t, 269 uint32_t, ip_stack_t *); 270 extern ire_t *ire_route_recursive_impl_v4(ire_t *ire, ipaddr_t, uint_t, 271 const ill_t *, zoneid_t, const ts_label_t *, uint_t, uint_t, uint32_t, 272 ip_stack_t *, ipaddr_t *, tsol_ire_gw_secattr_t **, uint_t *); 273 extern ire_t *ire_route_recursive_impl_v6(ire_t *ire, const in6_addr_t *, 274 uint_t, const ill_t *, zoneid_t, const ts_label_t *, uint_t, uint_t, 275 uint32_t, ip_stack_t *, in6_addr_t *, tsol_ire_gw_secattr_t **, uint_t *); 276 277 /* The different ire_sendfn functions */ 278 extern int ire_send_local_v4(ire_t *, mblk_t *, void *, 279 ip_xmit_attr_t *, uint32_t *); 280 extern int ire_send_multirt_v4(ire_t *, mblk_t *, void *, 281 ip_xmit_attr_t *, uint32_t *); 282 extern int ire_send_noroute_v4(ire_t *, mblk_t *, void *, 283 ip_xmit_attr_t *, uint32_t *); 284 extern int ire_send_multicast_v4(ire_t *, mblk_t *, void *, 285 ip_xmit_attr_t *, uint32_t *); 286 extern int ire_send_broadcast_v4(ire_t *, mblk_t *, void *, 287 ip_xmit_attr_t *, uint32_t *); 288 extern int ire_send_wire_v4(ire_t *, mblk_t *, void *, 289 ip_xmit_attr_t *, uint32_t *); 290 extern int ire_send_local_v6(ire_t *, mblk_t *, void *, 291 ip_xmit_attr_t *, uint32_t *); 292 extern int ire_send_multirt_v6(ire_t *, mblk_t *, void *, 293 ip_xmit_attr_t *, uint32_t *); 294 extern int ire_send_noroute_v6(ire_t *, mblk_t *, void *, 295 ip_xmit_attr_t *, uint32_t *); 296 extern int ire_send_multicast_v6(ire_t *, mblk_t *, void *, 297 ip_xmit_attr_t *, uint32_t *); 298 extern int ire_send_wire_v6(ire_t *, mblk_t *, void *, 299 ip_xmit_attr_t *, uint32_t *); 300 301 extern nce_t *ire_to_nce_pkt(ire_t *, mblk_t *); 302 extern nce_t *ire_to_nce(ire_t *, ipaddr_t, const in6_addr_t *); 303 304 /* Different ire_postfragfn functions */ 305 extern int ip_xmit(mblk_t *, struct nce_s *, 306 iaflags_t, uint_t, uint32_t, zoneid_t, zoneid_t, uintptr_t *); 307 extern int ip_postfrag_loopcheck(mblk_t *, struct nce_s *, 308 iaflags_t, uint_t, uint32_t, zoneid_t, zoneid_t, uintptr_t *); 309 extern int ip_postfrag_multirt_v4(mblk_t *, struct nce_s *, 310 iaflags_t, uint_t, uint32_t, zoneid_t, zoneid_t, uintptr_t *); 311 extern int ip_postfrag_multirt_v6(mblk_t *, struct nce_s *, 312 iaflags_t, uint_t, uint32_t, zoneid_t, zoneid_t, uintptr_t *); 313 314 extern void ip_postfrag_loopback(mblk_t *, struct nce_s *, 315 iaflags_t, uint_t, zoneid_t); 316 extern int ire_revalidate_nce(ire_t *); 317 318 extern ire_t *ip_select_route_pkt(mblk_t *, ip_xmit_attr_t *, 319 uint_t *, int *, boolean_t *); 320 extern ire_t *ip_select_route(const in6_addr_t *, const in6_addr_t, 321 ip_xmit_attr_t *, uint_t *, in6_addr_t *, int *, boolean_t *); 322 extern ire_t *ip_select_route_v4(ipaddr_t, ipaddr_t, ip_xmit_attr_t *, 323 uint_t *, ipaddr_t *, int *, boolean_t *); 324 extern ire_t *ip_select_route_v6(const in6_addr_t *, const in6_addr_t, 325 ip_xmit_attr_t *, uint_t *, in6_addr_t *, int *, boolean_t *); 326 327 extern void ire_walk(pfv_t, void *, ip_stack_t *); 328 extern void ire_walk_ill(uint_t, uint_t, pfv_t, void *, ill_t *); 329 extern void ire_walk_v4(pfv_t, void *, zoneid_t, ip_stack_t *); 330 extern void ire_walk_ill_tables(uint_t match_flags, uint_t ire_type, 331 pfv_t func, void *arg, size_t ftbl_sz, size_t htbl_sz, 332 irb_t **ipftbl, ill_t *ill, 333 zoneid_t zoneid, ip_stack_t *); 334 extern void ire_walk_v6(pfv_t, void *, zoneid_t, ip_stack_t *); 335 336 extern boolean_t ire_match_args(ire_t *, ipaddr_t, ipaddr_t, ipaddr_t, 337 int, const ill_t *, zoneid_t, const struct ts_label_s *, int); 338 extern boolean_t ire_match_args_v6(ire_t *, const in6_addr_t *, 339 const in6_addr_t *, const in6_addr_t *, int, const ill_t *, zoneid_t, 340 const ts_label_t *, int); 341 342 extern struct nce_s *arp_nce_init(ill_t *, in_addr_t, int); 343 extern boolean_t ire_walk_ill_match(uint_t, uint_t, ire_t *, ill_t *, 344 zoneid_t, ip_stack_t *); 345 extern void ire_increment_generation(ire_t *); 346 extern void ire_increment_multicast_generation(ip_stack_t *, boolean_t); 347 extern void ire_rebind(ire_t *); 348 extern boolean_t ire_clone_verify(ire_t *); 349 350 #endif /* _KERNEL */ 351 352 #ifdef __cplusplus 353 } 354 #endif 355 356 #endif /* _INET_IP_IRE_H */ 357