1 /*- 2 * Copyright (c) 1982, 1986, 1990, 1993 3 * The Regents of the University of California. 4 * Copyright (c) 2010-2011 Juniper Networks, Inc. 5 * All rights reserved. 6 * 7 * Portions of this software were developed by Robert N. M. Watson under 8 * contract to Juniper Networks, Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 4. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93 35 * $FreeBSD$ 36 */ 37 38 #ifndef _NETINET_IN_PCB_H_ 39 #define _NETINET_IN_PCB_H_ 40 41 #include <sys/queue.h> 42 #include <sys/_lock.h> 43 #include <sys/_mutex.h> 44 #include <sys/_rwlock.h> 45 46 #ifdef _KERNEL 47 #include <sys/lock.h> 48 #include <sys/rwlock.h> 49 #include <net/vnet.h> 50 #include <vm/uma.h> 51 #endif 52 53 #define in6pcb inpcb /* for KAME src sync over BSD*'s */ 54 #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */ 55 struct inpcbpolicy; 56 57 /* 58 * struct inpcb is the common protocol control block structure used in most 59 * IP transport protocols. 60 * 61 * Pointers to local and foreign host table entries, local and foreign socket 62 * numbers, and pointers up (to a socket structure) and down (to a 63 * protocol-specific control block) are stored here. 64 */ 65 LIST_HEAD(inpcbhead, inpcb); 66 LIST_HEAD(inpcbporthead, inpcbport); 67 typedef u_quad_t inp_gen_t; 68 69 /* 70 * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet. 71 * So, AF_INET6 null laddr is also used as AF_INET null laddr, by utilizing 72 * the following structure. 73 */ 74 struct in_addr_4in6 { 75 u_int32_t ia46_pad32[3]; 76 struct in_addr ia46_addr4; 77 }; 78 79 /* 80 * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553. in_conninfo has 81 * some extra padding to accomplish this. 82 */ 83 struct in_endpoints { 84 u_int16_t ie_fport; /* foreign port */ 85 u_int16_t ie_lport; /* local port */ 86 /* protocol dependent part, local and foreign addr */ 87 union { 88 /* foreign host table entry */ 89 struct in_addr_4in6 ie46_foreign; 90 struct in6_addr ie6_foreign; 91 } ie_dependfaddr; 92 union { 93 /* local host table entry */ 94 struct in_addr_4in6 ie46_local; 95 struct in6_addr ie6_local; 96 } ie_dependladdr; 97 u_int32_t ie6_zoneid; /* scope zone id */ 98 }; 99 #define ie_faddr ie_dependfaddr.ie46_foreign.ia46_addr4 100 #define ie_laddr ie_dependladdr.ie46_local.ia46_addr4 101 #define ie6_faddr ie_dependfaddr.ie6_foreign 102 #define ie6_laddr ie_dependladdr.ie6_local 103 104 /* 105 * XXX The defines for inc_* are hacks and should be changed to direct 106 * references. 107 */ 108 struct in_conninfo { 109 u_int8_t inc_flags; 110 u_int8_t inc_len; 111 u_int16_t inc_fibnum; /* XXX was pad, 16 bits is plenty */ 112 /* protocol dependent part */ 113 struct in_endpoints inc_ie; 114 }; 115 116 /* 117 * Flags for inc_flags. 118 */ 119 #define INC_ISIPV6 0x01 120 121 #define inc_isipv6 inc_flags /* temp compatability */ 122 #define inc_fport inc_ie.ie_fport 123 #define inc_lport inc_ie.ie_lport 124 #define inc_faddr inc_ie.ie_faddr 125 #define inc_laddr inc_ie.ie_laddr 126 #define inc6_faddr inc_ie.ie6_faddr 127 #define inc6_laddr inc_ie.ie6_laddr 128 #define inc6_zoneid inc_ie.ie6_zoneid 129 130 struct icmp6_filter; 131 132 /*- 133 * struct inpcb captures the network layer state for TCP, UDP, and raw IPv4 134 * and IPv6 sockets. In the case of TCP, further per-connection state is 135 * hung off of inp_ppcb most of the time. Almost all fields of struct inpcb 136 * are static after creation or protected by a per-inpcb rwlock, inp_lock. A 137 * few fields also require the global pcbinfo lock for the inpcb to be held, 138 * when modified, such as the global connection lists and hashes, as well as 139 * binding information (which affects which hash a connection is on). This 140 * model means that connections can be looked up without holding the 141 * per-connection lock, which is important for performance when attempting to 142 * find the connection for a packet given its IP and port tuple. Writing to 143 * these fields that write locks be held on both the inpcb and global locks. 144 * 145 * Key: 146 * (c) - Constant after initialization 147 * (g) - Protected by the pcbgroup lock 148 * (i) - Protected by the inpcb lock 149 * (p) - Protected by the pcbinfo lock for the inpcb 150 * (s) - Protected by another subsystem's locks 151 * (x) - Undefined locking 152 * 153 * A few other notes: 154 * 155 * When a read lock is held, stability of the field is guaranteed; to write 156 * to a field, a write lock must generally be held. 157 * 158 * netinet/netinet6-layer code should not assume that the inp_socket pointer 159 * is safe to dereference without inp_lock being held, even for protocols 160 * other than TCP (where the inpcb persists during TIMEWAIT even after the 161 * socket has been freed), or there may be close(2)-related races. 162 * 163 * The inp_vflag field is overloaded, and would otherwise ideally be (c). 164 */ 165 struct inpcb { 166 LIST_ENTRY(inpcb) inp_hash; /* (i/p) hash list */ 167 LIST_ENTRY(inpcb) inp_pcbgrouphash; /* (g/i) hash list */ 168 LIST_ENTRY(inpcb) inp_list; /* (i/p) list for all PCBs for proto */ 169 void *inp_ppcb; /* (i) pointer to per-protocol pcb */ 170 struct inpcbinfo *inp_pcbinfo; /* (c) PCB list info */ 171 struct inpcbgroup *inp_pcbgroup; /* (g/i) PCB group list */ 172 LIST_ENTRY(inpcb) inp_pcbgroup_wild; /* (g/i/p) group wildcard entry */ 173 struct socket *inp_socket; /* (i) back pointer to socket */ 174 struct ucred *inp_cred; /* (c) cache of socket cred */ 175 u_int32_t inp_flow; /* (i) IPv6 flow information */ 176 int inp_flags; /* (i) generic IP/datagram flags */ 177 int inp_flags2; /* (i) generic IP/datagram flags #2*/ 178 u_char inp_vflag; /* (i) IP version flag (v4/v6) */ 179 u_char inp_ip_ttl; /* (i) time to live proto */ 180 u_char inp_ip_p; /* (c) protocol proto */ 181 u_char inp_ip_minttl; /* (i) minimum TTL or drop */ 182 uint32_t inp_flowid; /* (x) flow id / queue id */ 183 u_int inp_refcount; /* (i) refcount */ 184 void *inp_pspare[5]; /* (x) route caching / general use */ 185 uint32_t inp_flowtype; /* (x) M_HASHTYPE value */ 186 uint32_t inp_rss_listen_bucket; /* (x) overridden RSS listen bucket */ 187 u_int inp_ispare[4]; /* (x) route caching / user cookie / 188 * general use */ 189 190 /* Local and foreign ports, local and foreign addr. */ 191 struct in_conninfo inp_inc; /* (i/p) list for PCB's local port */ 192 193 /* MAC and IPSEC policy information. */ 194 struct label *inp_label; /* (i) MAC label */ 195 struct inpcbpolicy *inp_sp; /* (s) for IPSEC */ 196 197 /* Protocol-dependent part; options. */ 198 struct { 199 u_char inp4_ip_tos; /* (i) type of service proto */ 200 struct mbuf *inp4_options; /* (i) IP options */ 201 struct ip_moptions *inp4_moptions; /* (i) IP mcast options */ 202 } inp_depend4; 203 struct { 204 /* (i) IP options */ 205 struct mbuf *inp6_options; 206 /* (i) IP6 options for outgoing packets */ 207 struct ip6_pktopts *inp6_outputopts; 208 /* (i) IP multicast options */ 209 struct ip6_moptions *inp6_moptions; 210 /* (i) ICMPv6 code type filter */ 211 struct icmp6_filter *inp6_icmp6filt; 212 /* (i) IPV6_CHECKSUM setsockopt */ 213 int inp6_cksum; 214 short inp6_hops; 215 } inp_depend6; 216 LIST_ENTRY(inpcb) inp_portlist; /* (i/p) */ 217 struct inpcbport *inp_phd; /* (i/p) head of this list */ 218 #define inp_zero_size offsetof(struct inpcb, inp_gencnt) 219 inp_gen_t inp_gencnt; /* (c) generation count */ 220 struct llentry *inp_lle; /* cached L2 information */ 221 struct rtentry *inp_rt; /* cached L3 information */ 222 struct rwlock inp_lock; 223 }; 224 #define inp_fport inp_inc.inc_fport 225 #define inp_lport inp_inc.inc_lport 226 #define inp_faddr inp_inc.inc_faddr 227 #define inp_laddr inp_inc.inc_laddr 228 #define inp_ip_tos inp_depend4.inp4_ip_tos 229 #define inp_options inp_depend4.inp4_options 230 #define inp_moptions inp_depend4.inp4_moptions 231 232 #define in6p_faddr inp_inc.inc6_faddr 233 #define in6p_laddr inp_inc.inc6_laddr 234 #define in6p_zoneid inp_inc.inc6_zoneid 235 #define in6p_hops inp_depend6.inp6_hops /* default hop limit */ 236 #define in6p_flowinfo inp_flow 237 #define in6p_options inp_depend6.inp6_options 238 #define in6p_outputopts inp_depend6.inp6_outputopts 239 #define in6p_moptions inp_depend6.inp6_moptions 240 #define in6p_icmp6filt inp_depend6.inp6_icmp6filt 241 #define in6p_cksum inp_depend6.inp6_cksum 242 243 #define inp_vnet inp_pcbinfo->ipi_vnet 244 245 /* 246 * The range of the generation count, as used in this implementation, is 9e19. 247 * We would have to create 300 billion connections per second for this number 248 * to roll over in a year. This seems sufficiently unlikely that we simply 249 * don't concern ourselves with that possibility. 250 */ 251 252 /* 253 * Interface exported to userland by various protocols which use inpcbs. Hack 254 * alert -- only define if struct xsocket is in scope. 255 */ 256 #ifdef _SYS_SOCKETVAR_H_ 257 struct xinpcb { 258 size_t xi_len; /* length of this structure */ 259 struct inpcb xi_inp; 260 struct xsocket xi_socket; 261 u_quad_t xi_alignment_hack; 262 }; 263 264 struct xinpgen { 265 size_t xig_len; /* length of this structure */ 266 u_int xig_count; /* number of PCBs at this time */ 267 inp_gen_t xig_gen; /* generation count at this time */ 268 so_gen_t xig_sogen; /* socket generation count at this time */ 269 }; 270 #endif /* _SYS_SOCKETVAR_H_ */ 271 272 struct inpcbport { 273 LIST_ENTRY(inpcbport) phd_hash; 274 struct inpcbhead phd_pcblist; 275 u_short phd_port; 276 }; 277 278 /*- 279 * Global data structure for each high-level protocol (UDP, TCP, ...) in both 280 * IPv4 and IPv6. Holds inpcb lists and information for managing them. 281 * 282 * Each pcbinfo is protected by two locks: ipi_lock and ipi_hash_lock, 283 * the former covering mutable global fields (such as the global pcb list), 284 * and the latter covering the hashed lookup tables. The lock order is: 285 * 286 * ipi_lock (before) inpcb locks (before) {ipi_hash_lock, pcbgroup locks} 287 * 288 * Locking key: 289 * 290 * (c) Constant or nearly constant after initialisation 291 * (g) Locked by ipi_lock 292 * (h) Read using either ipi_hash_lock or inpcb lock; write requires both 293 * (p) Protected by one or more pcbgroup locks 294 * (x) Synchronisation properties poorly defined 295 */ 296 struct inpcbinfo { 297 /* 298 * Global lock protecting global inpcb list, inpcb count, etc. 299 */ 300 struct rwlock ipi_lock; 301 302 /* 303 * Global list of inpcbs on the protocol. 304 */ 305 struct inpcbhead *ipi_listhead; /* (g) */ 306 u_int ipi_count; /* (g) */ 307 308 /* 309 * Generation count -- incremented each time a connection is allocated 310 * or freed. 311 */ 312 u_quad_t ipi_gencnt; /* (g) */ 313 314 /* 315 * Fields associated with port lookup and allocation. 316 */ 317 u_short ipi_lastport; /* (x) */ 318 u_short ipi_lastlow; /* (x) */ 319 u_short ipi_lasthi; /* (x) */ 320 321 /* 322 * UMA zone from which inpcbs are allocated for this protocol. 323 */ 324 struct uma_zone *ipi_zone; /* (c) */ 325 326 /* 327 * Connection groups associated with this protocol. These fields are 328 * constant, but pcbgroup structures themselves are protected by 329 * per-pcbgroup locks. 330 */ 331 struct inpcbgroup *ipi_pcbgroups; /* (c) */ 332 u_int ipi_npcbgroups; /* (c) */ 333 u_int ipi_hashfields; /* (c) */ 334 335 /* 336 * Global lock protecting non-pcbgroup hash lookup tables. 337 */ 338 struct rwlock ipi_hash_lock; 339 340 /* 341 * Global hash of inpcbs, hashed by local and foreign addresses and 342 * port numbers. 343 */ 344 struct inpcbhead *ipi_hashbase; /* (h) */ 345 u_long ipi_hashmask; /* (h) */ 346 347 /* 348 * Global hash of inpcbs, hashed by only local port number. 349 */ 350 struct inpcbporthead *ipi_porthashbase; /* (h) */ 351 u_long ipi_porthashmask; /* (h) */ 352 353 /* 354 * List of wildcard inpcbs for use with pcbgroups. In the past, was 355 * per-pcbgroup but is now global. All pcbgroup locks must be held 356 * to modify the list, so any is sufficient to read it. 357 */ 358 struct inpcbhead *ipi_wildbase; /* (p) */ 359 u_long ipi_wildmask; /* (p) */ 360 361 /* 362 * Pointer to network stack instance 363 */ 364 struct vnet *ipi_vnet; /* (c) */ 365 366 /* 367 * general use 2 368 */ 369 void *ipi_pspare[2]; 370 }; 371 372 #ifdef _KERNEL 373 /* 374 * Connection groups hold sets of connections that have similar CPU/thread 375 * affinity. Each connection belongs to exactly one connection group. 376 */ 377 struct inpcbgroup { 378 /* 379 * Per-connection group hash of inpcbs, hashed by local and foreign 380 * addresses and port numbers. 381 */ 382 struct inpcbhead *ipg_hashbase; /* (c) */ 383 u_long ipg_hashmask; /* (c) */ 384 385 /* 386 * Notional affinity of this pcbgroup. 387 */ 388 u_int ipg_cpu; /* (p) */ 389 390 /* 391 * Per-connection group lock, not to be confused with ipi_lock. 392 * Protects the hash table hung off the group, but also the global 393 * wildcard list in inpcbinfo. 394 */ 395 struct mtx ipg_lock; 396 } __aligned(CACHE_LINE_SIZE); 397 398 #define INP_LOCK_INIT(inp, d, t) \ 399 rw_init_flags(&(inp)->inp_lock, (t), RW_RECURSE | RW_DUPOK) 400 #define INP_LOCK_DESTROY(inp) rw_destroy(&(inp)->inp_lock) 401 #define INP_RLOCK(inp) rw_rlock(&(inp)->inp_lock) 402 #define INP_WLOCK(inp) rw_wlock(&(inp)->inp_lock) 403 #define INP_TRY_RLOCK(inp) rw_try_rlock(&(inp)->inp_lock) 404 #define INP_TRY_WLOCK(inp) rw_try_wlock(&(inp)->inp_lock) 405 #define INP_RUNLOCK(inp) rw_runlock(&(inp)->inp_lock) 406 #define INP_WUNLOCK(inp) rw_wunlock(&(inp)->inp_lock) 407 #define INP_TRY_UPGRADE(inp) rw_try_upgrade(&(inp)->inp_lock) 408 #define INP_DOWNGRADE(inp) rw_downgrade(&(inp)->inp_lock) 409 #define INP_WLOCKED(inp) rw_wowned(&(inp)->inp_lock) 410 #define INP_LOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_LOCKED) 411 #define INP_RLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_RLOCKED) 412 #define INP_WLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_WLOCKED) 413 #define INP_UNLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_UNLOCKED) 414 415 /* 416 * These locking functions are for inpcb consumers outside of sys/netinet, 417 * more specifically, they were added for the benefit of TOE drivers. The 418 * macros are reserved for use by the stack. 419 */ 420 void inp_wlock(struct inpcb *); 421 void inp_wunlock(struct inpcb *); 422 void inp_rlock(struct inpcb *); 423 void inp_runlock(struct inpcb *); 424 425 #ifdef INVARIANTS 426 void inp_lock_assert(struct inpcb *); 427 void inp_unlock_assert(struct inpcb *); 428 #else 429 static __inline void 430 inp_lock_assert(struct inpcb *inp __unused) 431 { 432 } 433 434 static __inline void 435 inp_unlock_assert(struct inpcb *inp __unused) 436 { 437 } 438 439 #endif 440 441 void inp_apply_all(void (*func)(struct inpcb *, void *), void *arg); 442 int inp_ip_tos_get(const struct inpcb *inp); 443 void inp_ip_tos_set(struct inpcb *inp, int val); 444 struct socket * 445 inp_inpcbtosocket(struct inpcb *inp); 446 struct tcpcb * 447 inp_inpcbtotcpcb(struct inpcb *inp); 448 void inp_4tuple_get(struct inpcb *inp, uint32_t *laddr, uint16_t *lp, 449 uint32_t *faddr, uint16_t *fp); 450 short inp_so_options(const struct inpcb *inp); 451 452 #endif /* _KERNEL */ 453 454 #define INP_INFO_LOCK_INIT(ipi, d) \ 455 rw_init_flags(&(ipi)->ipi_lock, (d), RW_RECURSE) 456 #define INP_INFO_LOCK_DESTROY(ipi) rw_destroy(&(ipi)->ipi_lock) 457 #define INP_INFO_RLOCK(ipi) rw_rlock(&(ipi)->ipi_lock) 458 #define INP_INFO_WLOCK(ipi) rw_wlock(&(ipi)->ipi_lock) 459 #define INP_INFO_TRY_RLOCK(ipi) rw_try_rlock(&(ipi)->ipi_lock) 460 #define INP_INFO_TRY_WLOCK(ipi) rw_try_wlock(&(ipi)->ipi_lock) 461 #define INP_INFO_TRY_UPGRADE(ipi) rw_try_upgrade(&(ipi)->ipi_lock) 462 #define INP_INFO_RUNLOCK(ipi) rw_runlock(&(ipi)->ipi_lock) 463 #define INP_INFO_WUNLOCK(ipi) rw_wunlock(&(ipi)->ipi_lock) 464 #define INP_INFO_LOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_LOCKED) 465 #define INP_INFO_RLOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_RLOCKED) 466 #define INP_INFO_WLOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_WLOCKED) 467 #define INP_INFO_UNLOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_UNLOCKED) 468 469 #define INP_HASH_LOCK_INIT(ipi, d) \ 470 rw_init_flags(&(ipi)->ipi_hash_lock, (d), 0) 471 #define INP_HASH_LOCK_DESTROY(ipi) rw_destroy(&(ipi)->ipi_hash_lock) 472 #define INP_HASH_RLOCK(ipi) rw_rlock(&(ipi)->ipi_hash_lock) 473 #define INP_HASH_WLOCK(ipi) rw_wlock(&(ipi)->ipi_hash_lock) 474 #define INP_HASH_RUNLOCK(ipi) rw_runlock(&(ipi)->ipi_hash_lock) 475 #define INP_HASH_WUNLOCK(ipi) rw_wunlock(&(ipi)->ipi_hash_lock) 476 #define INP_HASH_LOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_hash_lock, \ 477 RA_LOCKED) 478 #define INP_HASH_WLOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_hash_lock, \ 479 RA_WLOCKED) 480 481 #define INP_GROUP_LOCK_INIT(ipg, d) mtx_init(&(ipg)->ipg_lock, (d), NULL, \ 482 MTX_DEF | MTX_DUPOK) 483 #define INP_GROUP_LOCK_DESTROY(ipg) mtx_destroy(&(ipg)->ipg_lock) 484 485 #define INP_GROUP_LOCK(ipg) mtx_lock(&(ipg)->ipg_lock) 486 #define INP_GROUP_LOCK_ASSERT(ipg) mtx_assert(&(ipg)->ipg_lock, MA_OWNED) 487 #define INP_GROUP_UNLOCK(ipg) mtx_unlock(&(ipg)->ipg_lock) 488 489 #define INP_PCBHASH(faddr, lport, fport, mask) \ 490 (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask)) 491 #define INP_PCBPORTHASH(lport, mask) \ 492 (ntohs((lport)) & (mask)) 493 #define INP6_PCBHASHKEY(faddr) ((faddr)->s6_addr32[3]) 494 495 /* 496 * Flags for inp_vflags -- historically version flags only 497 */ 498 #define INP_IPV4 0x1 499 #define INP_IPV6 0x2 500 #define INP_IPV6PROTO 0x4 /* opened under IPv6 protocol */ 501 502 /* 503 * Flags for inp_flags. 504 */ 505 #define INP_RECVOPTS 0x00000001 /* receive incoming IP options */ 506 #define INP_RECVRETOPTS 0x00000002 /* receive IP options for reply */ 507 #define INP_RECVDSTADDR 0x00000004 /* receive IP dst address */ 508 #define INP_HDRINCL 0x00000008 /* user supplies entire IP header */ 509 #define INP_HIGHPORT 0x00000010 /* user wants "high" port binding */ 510 #define INP_LOWPORT 0x00000020 /* user wants "low" port binding */ 511 #define INP_ANONPORT 0x00000040 /* port chosen for user */ 512 #define INP_RECVIF 0x00000080 /* receive incoming interface */ 513 #define INP_MTUDISC 0x00000100 /* user can do MTU discovery */ 514 /* 0x000200 unused: was INP_FAITH */ 515 #define INP_RECVTTL 0x00000400 /* receive incoming IP TTL */ 516 #define INP_DONTFRAG 0x00000800 /* don't fragment packet */ 517 #define INP_BINDANY 0x00001000 /* allow bind to any address */ 518 #define INP_INHASHLIST 0x00002000 /* in_pcbinshash() has been called */ 519 #define INP_RECVTOS 0x00004000 /* receive incoming IP TOS */ 520 #define IN6P_IPV6_V6ONLY 0x00008000 /* restrict AF_INET6 socket for v6 */ 521 #define IN6P_PKTINFO 0x00010000 /* receive IP6 dst and I/F */ 522 #define IN6P_HOPLIMIT 0x00020000 /* receive hoplimit */ 523 #define IN6P_HOPOPTS 0x00040000 /* receive hop-by-hop options */ 524 #define IN6P_DSTOPTS 0x00080000 /* receive dst options after rthdr */ 525 #define IN6P_RTHDR 0x00100000 /* receive routing header */ 526 #define IN6P_RTHDRDSTOPTS 0x00200000 /* receive dstoptions before rthdr */ 527 #define IN6P_TCLASS 0x00400000 /* receive traffic class value */ 528 #define IN6P_AUTOFLOWLABEL 0x00800000 /* attach flowlabel automatically */ 529 #define INP_TIMEWAIT 0x01000000 /* in TIMEWAIT, ppcb is tcptw */ 530 #define INP_ONESBCAST 0x02000000 /* send all-ones broadcast */ 531 #define INP_DROPPED 0x04000000 /* protocol drop flag */ 532 #define INP_SOCKREF 0x08000000 /* strong socket reference */ 533 #define INP_RESERVED_0 0x10000000 /* reserved field */ 534 #define INP_RESERVED_1 0x20000000 /* reserved field */ 535 #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */ 536 #define IN6P_MTU 0x80000000 /* receive path MTU */ 537 538 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\ 539 INP_RECVIF|INP_RECVTTL|INP_RECVTOS|\ 540 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\ 541 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\ 542 IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\ 543 IN6P_MTU) 544 545 /* 546 * Flags for inp_flags2. 547 */ 548 #define INP_LLE_VALID 0x00000001 /* cached lle is valid */ 549 #define INP_RT_VALID 0x00000002 /* cached rtentry is valid */ 550 #define INP_PCBGROUPWILD 0x00000004 /* in pcbgroup wildcard list */ 551 #define INP_REUSEPORT 0x00000008 /* SO_REUSEPORT option is set */ 552 #define INP_FREED 0x00000010 /* inp itself is not valid */ 553 #define INP_REUSEADDR 0x00000020 /* SO_REUSEADDR option is set */ 554 #define INP_BINDMULTI 0x00000040 /* IP_BINDMULTI option is set */ 555 #define INP_RSS_BUCKET_SET 0x00000080 /* IP_RSS_LISTEN_BUCKET is set */ 556 #define INP_RECVFLOWID 0x00000100 /* populate recv datagram with flow info */ 557 #define INP_RECVRSSBUCKETID 0x00000200 /* populate recv datagram with bucket id */ 558 559 /* 560 * Flags passed to in_pcblookup*() functions. 561 */ 562 #define INPLOOKUP_WILDCARD 0x00000001 /* Allow wildcard sockets. */ 563 #define INPLOOKUP_RLOCKPCB 0x00000002 /* Return inpcb read-locked. */ 564 #define INPLOOKUP_WLOCKPCB 0x00000004 /* Return inpcb write-locked. */ 565 566 #define INPLOOKUP_MASK (INPLOOKUP_WILDCARD | INPLOOKUP_RLOCKPCB | \ 567 INPLOOKUP_WLOCKPCB) 568 569 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb) 570 #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */ 571 572 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family 573 574 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af) 575 576 /* 577 * Constants for pcbinfo.ipi_hashfields. 578 */ 579 #define IPI_HASHFIELDS_NONE 0 580 #define IPI_HASHFIELDS_2TUPLE 1 581 #define IPI_HASHFIELDS_4TUPLE 2 582 583 #ifdef _KERNEL 584 VNET_DECLARE(int, ipport_reservedhigh); 585 VNET_DECLARE(int, ipport_reservedlow); 586 VNET_DECLARE(int, ipport_lowfirstauto); 587 VNET_DECLARE(int, ipport_lowlastauto); 588 VNET_DECLARE(int, ipport_firstauto); 589 VNET_DECLARE(int, ipport_lastauto); 590 VNET_DECLARE(int, ipport_hifirstauto); 591 VNET_DECLARE(int, ipport_hilastauto); 592 VNET_DECLARE(int, ipport_randomized); 593 VNET_DECLARE(int, ipport_randomcps); 594 VNET_DECLARE(int, ipport_randomtime); 595 VNET_DECLARE(int, ipport_stoprandom); 596 VNET_DECLARE(int, ipport_tcpallocs); 597 598 #define V_ipport_reservedhigh VNET(ipport_reservedhigh) 599 #define V_ipport_reservedlow VNET(ipport_reservedlow) 600 #define V_ipport_lowfirstauto VNET(ipport_lowfirstauto) 601 #define V_ipport_lowlastauto VNET(ipport_lowlastauto) 602 #define V_ipport_firstauto VNET(ipport_firstauto) 603 #define V_ipport_lastauto VNET(ipport_lastauto) 604 #define V_ipport_hifirstauto VNET(ipport_hifirstauto) 605 #define V_ipport_hilastauto VNET(ipport_hilastauto) 606 #define V_ipport_randomized VNET(ipport_randomized) 607 #define V_ipport_randomcps VNET(ipport_randomcps) 608 #define V_ipport_randomtime VNET(ipport_randomtime) 609 #define V_ipport_stoprandom VNET(ipport_stoprandom) 610 #define V_ipport_tcpallocs VNET(ipport_tcpallocs) 611 612 void in_pcbinfo_destroy(struct inpcbinfo *); 613 void in_pcbinfo_init(struct inpcbinfo *, const char *, struct inpcbhead *, 614 int, int, char *, uma_init, uma_fini, uint32_t, u_int); 615 616 int in_pcbbind_check_bindmulti(const struct inpcb *ni, 617 const struct inpcb *oi); 618 619 struct inpcbgroup * 620 in_pcbgroup_byhash(struct inpcbinfo *, u_int, uint32_t); 621 struct inpcbgroup * 622 in_pcbgroup_byinpcb(struct inpcb *); 623 struct inpcbgroup * 624 in_pcbgroup_bytuple(struct inpcbinfo *, struct in_addr, u_short, 625 struct in_addr, u_short); 626 void in_pcbgroup_destroy(struct inpcbinfo *); 627 int in_pcbgroup_enabled(struct inpcbinfo *); 628 void in_pcbgroup_init(struct inpcbinfo *, u_int, int); 629 void in_pcbgroup_remove(struct inpcb *); 630 void in_pcbgroup_update(struct inpcb *); 631 void in_pcbgroup_update_mbuf(struct inpcb *, struct mbuf *); 632 633 void in_pcbpurgeif0(struct inpcbinfo *, struct ifnet *); 634 int in_pcballoc(struct socket *, struct inpcbinfo *); 635 int in_pcbbind(struct inpcb *, struct sockaddr *, struct ucred *); 636 int in_pcb_lport(struct inpcb *, struct in_addr *, u_short *, 637 struct ucred *, int); 638 int in_pcbbind_setup(struct inpcb *, struct sockaddr *, in_addr_t *, 639 u_short *, struct ucred *); 640 int in_pcbconnect(struct inpcb *, struct sockaddr *, struct ucred *); 641 int in_pcbconnect_mbuf(struct inpcb *, struct sockaddr *, struct ucred *, 642 struct mbuf *); 643 int in_pcbconnect_setup(struct inpcb *, struct sockaddr *, in_addr_t *, 644 u_short *, in_addr_t *, u_short *, struct inpcb **, 645 struct ucred *); 646 void in_pcbdetach(struct inpcb *); 647 void in_pcbdisconnect(struct inpcb *); 648 void in_pcbdrop(struct inpcb *); 649 void in_pcbfree(struct inpcb *); 650 int in_pcbinshash(struct inpcb *); 651 int in_pcbinshash_nopcbgroup(struct inpcb *); 652 int in_pcbladdr(struct inpcb *, struct in_addr *, struct in_addr *, 653 struct ucred *); 654 struct inpcb * 655 in_pcblookup_local(struct inpcbinfo *, 656 struct in_addr, u_short, int, struct ucred *); 657 struct inpcb * 658 in_pcblookup(struct inpcbinfo *, struct in_addr, u_int, 659 struct in_addr, u_int, int, struct ifnet *); 660 struct inpcb * 661 in_pcblookup_mbuf(struct inpcbinfo *, struct in_addr, u_int, 662 struct in_addr, u_int, int, struct ifnet *, struct mbuf *); 663 void in_pcbnotifyall(struct inpcbinfo *pcbinfo, struct in_addr, 664 int, struct inpcb *(*)(struct inpcb *, int)); 665 void in_pcbref(struct inpcb *); 666 void in_pcbrehash(struct inpcb *); 667 void in_pcbrehash_mbuf(struct inpcb *, struct mbuf *); 668 int in_pcbrele(struct inpcb *); 669 int in_pcbrele_rlocked(struct inpcb *); 670 int in_pcbrele_wlocked(struct inpcb *); 671 void in_pcbsetsolabel(struct socket *so); 672 int in_getpeeraddr(struct socket *so, struct sockaddr **nam); 673 int in_getsockaddr(struct socket *so, struct sockaddr **nam); 674 struct sockaddr * 675 in_sockaddr(in_port_t port, struct in_addr *addr); 676 void in_pcbsosetlabel(struct socket *so); 677 #endif /* _KERNEL */ 678 679 #endif /* !_NETINET_IN_PCB_H_ */ 680