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 2010 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 /* Copyright (c) 1990 Mentat Inc. */ 26 27 #ifndef _INET_IP_IRE_H 28 #define _INET_IP_IRE_H 29 30 #ifdef __cplusplus 31 extern "C" { 32 #endif 33 34 #define IPV6_LL_PREFIXLEN 10 /* Number of bits in link-local pref */ 35 36 #define IP_CACHE_TABLE_SIZE 256 37 #define IP_MASK_TABLE_SIZE (IP_ABITS + 1) /* 33 ptrs */ 38 39 #define IP6_FTABLE_HASH_SIZE 32 /* size of each hash table in ptrs */ 40 #define IP6_CACHE_TABLE_SIZE 256 41 #define IP6_MASK_TABLE_SIZE (IPV6_ABITS + 1) /* 129 ptrs */ 42 43 /* 44 * We use the common modulo hash function. In ip_ire_init(), we make 45 * sure that the cache table size is always a power of 2. That's why 46 * we can use & instead of %. Also note that we try hard to make sure 47 * the lower bits of an address capture most info from the whole address. 48 * The reason being that since our hash table is probably a lot smaller 49 * than 2^32 buckets so the lower bits are the most important. 50 */ 51 #define IRE_ADDR_HASH(addr, table_size) \ 52 (((addr) ^ ((addr) >> 8) ^ ((addr) >> 16) ^ ((addr) >> 24)) & \ 53 ((table_size) - 1)) 54 55 /* 56 * To make a byte-order neutral hash for IPv6, just take all the 57 * bytes in the bottom 32 bits into account. 58 */ 59 #define IRE_ADDR_HASH_V6(addr, table_size) \ 60 IRE_ADDR_HASH((addr).s6_addr32[3], table_size) 61 62 /* 63 * This assumes that the ftable size is a power of 2. 64 * We include some high-order bytes to avoid all IRE_LOCALs in the same 65 * bucket for performance reasons. 66 */ 67 #define IRE_ADDR_MASK_HASH_V6(addr, mask, table_size) \ 68 ((((addr).s6_addr8[0] & (mask).s6_addr8[0]) ^ \ 69 ((addr).s6_addr8[1] & (mask).s6_addr8[1]) ^ \ 70 ((addr).s6_addr8[6] & (mask).s6_addr8[6]) ^ \ 71 ((addr).s6_addr8[7] & (mask).s6_addr8[7]) ^ \ 72 ((addr).s6_addr8[8] & (mask).s6_addr8[8]) ^ \ 73 ((addr).s6_addr8[9] & (mask).s6_addr8[9]) ^ \ 74 ((addr).s6_addr8[10] & (mask).s6_addr8[10]) ^ \ 75 ((addr).s6_addr8[13] & (mask).s6_addr8[13]) ^ \ 76 ((addr).s6_addr8[14] & (mask).s6_addr8[14]) ^ \ 77 ((addr).s6_addr8[15] & (mask).s6_addr8[15])) & ((table_size) - 1)) 78 79 #define IRE_HIDDEN_TYPE(ire_type) ((ire_type) & \ 80 (IRE_HOST | IRE_PREFIX | IRE_DEFAULT | IRE_IF_ALL | IRE_BROADCAST)) 81 82 /* 83 * match parameter definitions for IRE lookup routines. 84 */ 85 #define MATCH_IRE_DSTONLY 0x0000 /* Match just the address */ 86 #define MATCH_IRE_TYPE 0x0001 /* Match IRE type */ 87 #define MATCH_IRE_MASK 0x0002 /* Match IRE mask */ 88 #define MATCH_IRE_SHORTERMASK 0x0004 /* A mask shorter than the argument */ 89 #define MATCH_IRE_GW 0x0008 /* Match IRE gateway */ 90 #define MATCH_IRE_ILL 0x0010 /* Match IRE on the ill */ 91 #define MATCH_IRE_ZONEONLY 0x0020 /* Match IREs in specified zone, ie */ 92 /* don't match IRE_LOCALs from other */ 93 /* zones or shared IREs */ 94 #define MATCH_IRE_SECATTR 0x0040 /* Match gateway security attributes */ 95 #define MATCH_IRE_TESTHIDDEN 0x0080 /* Match ire_testhidden IREs */ 96 97 #define MAX_IRE_RECURSION 4 /* Max IREs in ire_route_recursive */ 98 99 100 /* 101 * We use atomics so that we get an accurate accounting on the ires. 102 * Otherwise we can't determine leaks correctly. 103 */ 104 #define BUMP_IRE_STATS(ire_stats, x) atomic_add_64(&(ire_stats).x, 1) 105 106 #ifdef _KERNEL 107 struct ts_label_s; 108 struct nce_s; 109 /* 110 * structure for passing args between ire_ftable_lookup and ire_find_best_route 111 */ 112 typedef struct ire_ftable_args_s { 113 in6_addr_t ift_addr_v6; 114 in6_addr_t ift_mask_v6; 115 in6_addr_t ift_gateway_v6; 116 #define ift_addr V4_PART_OF_V6(ift_addr_v6) 117 #define ift_mask V4_PART_OF_V6(ift_mask_v6) 118 #define ift_gateway V4_PART_OF_V6(ift_gateway_v6) 119 int ift_type; 120 const ill_t *ift_ill; 121 zoneid_t ift_zoneid; 122 const ts_label_t *ift_tsl; 123 int ift_flags; 124 ire_t *ift_best_ire; 125 } ire_ftable_args_t; 126 127 extern ipaddr_t ip_plen_to_mask(uint_t); 128 extern in6_addr_t *ip_plen_to_mask_v6(uint_t, in6_addr_t *); 129 130 extern int ip_ire_advise(queue_t *, mblk_t *, cred_t *); 131 extern int ip_ire_delete(queue_t *, mblk_t *, cred_t *); 132 extern void ip_ire_reclaim(void *); 133 134 extern int ip_mask_to_plen(ipaddr_t); 135 extern int ip_mask_to_plen_v6(const in6_addr_t *); 136 137 extern ire_t *ire_add(ire_t *); 138 extern ire_t *ire_add_v6(ire_t *); 139 extern int ire_atomic_start(irb_t *irb_ptr, ire_t *ire); 140 extern void ire_atomic_end(irb_t *irb_ptr, ire_t *ire); 141 142 extern ire_t *ire_create(uchar_t *, uchar_t *, uchar_t *, 143 ushort_t, ill_t *, zoneid_t, uint_t, tsol_gc_t *, ip_stack_t *); 144 145 extern ire_t **ire_create_bcast(ill_t *, ipaddr_t, zoneid_t, ire_t **); 146 extern ire_t *ire_create_if_clone(ire_t *, const in6_addr_t *, uint_t *); 147 extern ire_t *ire_lookup_bcast(ill_t *, ipaddr_t, zoneid_t); 148 extern int ire_init_v4(ire_t *, uchar_t *, uchar_t *, uchar_t *, 149 ushort_t, ill_t *, zoneid_t, uint_t, tsol_gc_t *, ip_stack_t *); 150 extern int ire_init_v6(ire_t *, const in6_addr_t *, const in6_addr_t *, 151 const in6_addr_t *, ushort_t, ill_t *, zoneid_t, uint_t, tsol_gc_t *, 152 ip_stack_t *); 153 154 extern int ire_init_common(ire_t *, ushort_t, ill_t *, zoneid_t, uint_t, 155 uchar_t, tsol_gc_t *, ip_stack_t *); 156 157 extern ire_t *ire_create_v6(const in6_addr_t *, const in6_addr_t *, 158 const in6_addr_t *, ushort_t, ill_t *, zoneid_t, uint_t, 159 tsol_gc_t *, ip_stack_t *); 160 161 extern void ire_delete(ire_t *); 162 extern void ire_delete_v6(ire_t *); 163 164 /* 165 * ire_pref used to make sure we don't set up routing loops in the ire_dep 166 * chain. 167 */ 168 extern int ire_pref(ire_t *); 169 extern boolean_t ire_dep_build(ire_t *[], uint_t [], uint_t); 170 extern void ire_dep_delete_if_clone(ire_t *); 171 extern void ire_dep_incr_generation(ire_t *); 172 extern void ire_dep_remove(ire_t *); 173 extern void ire_dep_unbuild(ire_t *[], uint_t); 174 extern uint_t ire_dep_validate_generations(ire_t *); 175 extern void ire_dep_invalidate_generations(ire_t *); 176 extern boolean_t ire_determine_nce_capable(ire_t *); 177 178 extern void ire_flush_cache_v4(ire_t *, int); 179 extern void ire_flush_cache_v6(ire_t *, int); 180 181 extern ire_t *ire_ftable_lookup_v4(ipaddr_t, ipaddr_t, ipaddr_t, int, 182 const ill_t *, zoneid_t, const struct ts_label_s *, int, uint32_t, 183 ip_stack_t *, uint_t *); 184 extern ire_t *ire_ftable_lookup_v6(const in6_addr_t *, const in6_addr_t *, 185 const in6_addr_t *, int, const ill_t *, zoneid_t, 186 const struct ts_label_s *, int, uint32_t, ip_stack_t *, uint_t *); 187 188 extern ire_t *ire_ftable_lookup_simple_v4(ipaddr_t, uint32_t, ip_stack_t *, 189 uint_t *); 190 extern ire_t *ire_ftable_lookup_simple_v6(const in6_addr_t *, uint32_t, 191 ip_stack_t *, uint_t *); 192 193 extern boolean_t ire_gateway_ok_zone_v4(ipaddr_t, zoneid_t, ill_t *, 194 const ts_label_t *, ip_stack_t *, boolean_t); 195 extern boolean_t ire_gateway_ok_zone_v6(const in6_addr_t *, zoneid_t, ill_t *, 196 const ts_label_t *, ip_stack_t *, boolean_t); 197 198 extern ire_t *ire_alt_local(ire_t *, zoneid_t, const ts_label_t *, 199 const ill_t *, uint_t *); 200 201 extern ill_t *ire_lookup_multi_ill_v4(ipaddr_t, zoneid_t, ip_stack_t *, 202 boolean_t *, ipaddr_t *); 203 extern ill_t *ire_lookup_multi_ill_v6(const in6_addr_t *, zoneid_t, 204 ip_stack_t *, boolean_t *, in6_addr_t *); 205 206 extern ire_t *ire_nexthop(ire_t *); 207 extern ill_t *ire_nexthop_ill(ire_t *); 208 extern ill_t *ire_nce_ill(ire_t *); 209 210 extern ire_t *ire_reject(ip_stack_t *, boolean_t); 211 extern ire_t *ire_blackhole(ip_stack_t *, boolean_t); 212 extern ire_t *ire_multicast(ill_t *); 213 214 /* The different ire_recvfn functions */ 215 extern void ire_recv_forward_v4(ire_t *, mblk_t *, void *, 216 ip_recv_attr_t *); 217 extern void ire_recv_noroute_v4(ire_t *, mblk_t *, void *, 218 ip_recv_attr_t *); 219 extern void ire_recv_broadcast_v4(ire_t *, mblk_t *, void *, 220 ip_recv_attr_t *); 221 extern void ire_recv_multicast_v4(ire_t *, mblk_t *, void *, 222 ip_recv_attr_t *); 223 extern void ire_recv_multirt_v4(ire_t *, mblk_t *, void *, 224 ip_recv_attr_t *); 225 extern void ire_recv_loopback_v4(ire_t *, mblk_t *, void *, 226 ip_recv_attr_t *); 227 extern void ire_recv_local_v4(ire_t *, mblk_t *, void *, 228 ip_recv_attr_t *); 229 extern void ire_recv_noaccept_v4(ire_t *, mblk_t *, void *, 230 ip_recv_attr_t *); 231 232 extern void ire_recv_forward_v6(ire_t *, mblk_t *, void *, 233 ip_recv_attr_t *); 234 extern void ire_recv_noroute_v6(ire_t *, mblk_t *, void *, 235 ip_recv_attr_t *); 236 extern void ire_recv_multicast_v6(ire_t *, mblk_t *, void *, 237 ip_recv_attr_t *); 238 extern void ire_recv_multirt_v6(ire_t *, mblk_t *, void *, 239 ip_recv_attr_t *); 240 extern void ire_recv_loopback_v6(ire_t *, mblk_t *, void *, 241 ip_recv_attr_t *); 242 extern void ire_recv_local_v6(ire_t *, mblk_t *, void *, ip_recv_attr_t *); 243 extern void ire_recv_noaccept_v6(ire_t *, mblk_t *, void *, 244 ip_recv_attr_t *); 245 246 extern void irb_refhold(irb_t *); 247 extern void irb_refhold_locked(irb_t *); 248 extern void irb_refrele(irb_t *); 249 extern void irb_increment_generation(irb_t *); 250 251 extern void ire_refhold(ire_t *); 252 extern void ire_refhold_notr(ire_t *); 253 extern void ire_refhold_locked(ire_t *); 254 extern void ire_refrele(ire_t *); 255 extern void ire_refrele_notr(ire_t *); 256 extern void ire_make_condemned(ire_t *); 257 extern boolean_t ire_no_good(ire_t *); 258 extern nce_t *ire_handle_condemned_nce(nce_t *, ire_t *, ipha_t *, ip6_t *, 259 boolean_t); 260 261 extern ire_t *ire_round_robin(irb_t *, ire_ftable_args_t *, uint_t, 262 ire_t *, ip_stack_t *); 263 264 extern ire_t *ire_route_recursive_v4(ipaddr_t, uint_t, const ill_t *, 265 zoneid_t, const ts_label_t *, uint_t, uint_t, uint32_t, ip_stack_t *, 266 ipaddr_t *, tsol_ire_gw_secattr_t **, uint_t *); 267 extern ire_t *ire_route_recursive_v6(const in6_addr_t *, uint_t, 268 const ill_t *, zoneid_t, const ts_label_t *, uint_t, uint_t, uint32_t, 269 ip_stack_t *, in6_addr_t *, tsol_ire_gw_secattr_t **, uint_t *); 270 extern ire_t *ire_route_recursive_dstonly_v4(ipaddr_t, uint_t, 271 uint32_t, ip_stack_t *); 272 extern ire_t *ire_route_recursive_dstonly_v6(const in6_addr_t *, uint_t, 273 uint32_t, ip_stack_t *); 274 extern ire_t *ire_route_recursive_impl_v4(ire_t *ire, ipaddr_t, uint_t, 275 const ill_t *, zoneid_t, const ts_label_t *, uint_t, uint_t, uint32_t, 276 ip_stack_t *, ipaddr_t *, tsol_ire_gw_secattr_t **, uint_t *); 277 extern ire_t *ire_route_recursive_impl_v6(ire_t *ire, const in6_addr_t *, 278 uint_t, const ill_t *, zoneid_t, const ts_label_t *, uint_t, uint_t, 279 uint32_t, ip_stack_t *, in6_addr_t *, tsol_ire_gw_secattr_t **, uint_t *); 280 281 /* The different ire_sendfn functions */ 282 extern int ire_send_local_v4(ire_t *, mblk_t *, void *, 283 ip_xmit_attr_t *, uint32_t *); 284 extern int ire_send_multirt_v4(ire_t *, mblk_t *, void *, 285 ip_xmit_attr_t *, uint32_t *); 286 extern int ire_send_noroute_v4(ire_t *, mblk_t *, void *, 287 ip_xmit_attr_t *, uint32_t *); 288 extern int ire_send_multicast_v4(ire_t *, mblk_t *, void *, 289 ip_xmit_attr_t *, uint32_t *); 290 extern int ire_send_broadcast_v4(ire_t *, mblk_t *, void *, 291 ip_xmit_attr_t *, uint32_t *); 292 extern int ire_send_wire_v4(ire_t *, mblk_t *, void *, 293 ip_xmit_attr_t *, uint32_t *); 294 extern int ire_send_local_v6(ire_t *, mblk_t *, void *, 295 ip_xmit_attr_t *, uint32_t *); 296 extern int ire_send_multirt_v6(ire_t *, mblk_t *, void *, 297 ip_xmit_attr_t *, uint32_t *); 298 extern int ire_send_noroute_v6(ire_t *, mblk_t *, void *, 299 ip_xmit_attr_t *, uint32_t *); 300 extern int ire_send_multicast_v6(ire_t *, mblk_t *, void *, 301 ip_xmit_attr_t *, uint32_t *); 302 extern int ire_send_wire_v6(ire_t *, mblk_t *, void *, 303 ip_xmit_attr_t *, uint32_t *); 304 305 extern nce_t *ire_to_nce_pkt(ire_t *, mblk_t *); 306 extern nce_t *ire_to_nce(ire_t *, ipaddr_t, const in6_addr_t *); 307 308 /* Different ire_postfragfn functions */ 309 extern int ip_xmit(mblk_t *, struct nce_s *, 310 iaflags_t, uint_t, uint32_t, zoneid_t, zoneid_t, uintptr_t *); 311 extern int ip_postfrag_loopcheck(mblk_t *, struct nce_s *, 312 iaflags_t, uint_t, uint32_t, zoneid_t, zoneid_t, uintptr_t *); 313 extern int ip_postfrag_multirt_v4(mblk_t *, struct nce_s *, 314 iaflags_t, uint_t, uint32_t, zoneid_t, zoneid_t, uintptr_t *); 315 extern int ip_postfrag_multirt_v6(mblk_t *, struct nce_s *, 316 iaflags_t, uint_t, uint32_t, zoneid_t, zoneid_t, uintptr_t *); 317 318 extern void ip_postfrag_loopback(mblk_t *, struct nce_s *, 319 iaflags_t, uint_t, zoneid_t); 320 extern int ire_revalidate_nce(ire_t *); 321 322 extern ire_t *ip_select_route_pkt(mblk_t *, ip_xmit_attr_t *, 323 uint_t *, int *, boolean_t *); 324 extern ire_t *ip_select_route(const in6_addr_t *, ip_xmit_attr_t *, 325 uint_t *, in6_addr_t *, int *, boolean_t *); 326 extern ire_t *ip_select_route_v4(ipaddr_t, ip_xmit_attr_t *, 327 uint_t *, ipaddr_t *, int *, boolean_t *); 328 extern ire_t *ip_select_route_v6(const in6_addr_t *, ip_xmit_attr_t *, 329 uint_t *, in6_addr_t *, int *, boolean_t *); 330 331 extern void ire_walk(pfv_t, void *, ip_stack_t *); 332 extern void ire_walk_ill(uint_t, uint_t, pfv_t, void *, ill_t *); 333 extern void ire_walk_v4(pfv_t, void *, zoneid_t, ip_stack_t *); 334 extern void ire_walk_ill_tables(uint_t match_flags, uint_t ire_type, 335 pfv_t func, void *arg, size_t ftbl_sz, size_t htbl_sz, 336 irb_t **ipftbl, ill_t *ill, 337 zoneid_t zoneid, ip_stack_t *); 338 extern void ire_walk_v6(pfv_t, void *, zoneid_t, ip_stack_t *); 339 340 extern boolean_t ire_match_args(ire_t *, ipaddr_t, ipaddr_t, ipaddr_t, 341 int, const ill_t *, zoneid_t, const struct ts_label_s *, int); 342 extern boolean_t ire_match_args_v6(ire_t *, const in6_addr_t *, 343 const in6_addr_t *, const in6_addr_t *, int, const ill_t *, zoneid_t, 344 const ts_label_t *, int); 345 346 extern struct nce_s *arp_nce_init(ill_t *, in_addr_t, int); 347 extern boolean_t ire_walk_ill_match(uint_t, uint_t, ire_t *, ill_t *, 348 zoneid_t, ip_stack_t *); 349 extern void ire_increment_generation(ire_t *); 350 extern void ire_increment_multicast_generation(ip_stack_t *, boolean_t); 351 352 #endif /* _KERNEL */ 353 354 #ifdef __cplusplus 355 } 356 #endif 357 358 #endif /* _INET_IP_IRE_H */ 359