2 * Copyright (c) 1982, 1986, 1990, 1993
3 * The Regents of the University of California.
4 * Copyright (c) 2010-2011 Juniper Networks, Inc.
7 * Portions of this software were developed by Robert N. M. Watson under
8 * contract to Juniper Networks, Inc.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
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19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
38 #ifndef _NETINET_IN_PCB_H_
39 #define _NETINET_IN_PCB_H_
41 #include <sys/queue.h>
42 #include <sys/_lock.h>
43 #include <sys/_mutex.h>
44 #include <sys/_rwlock.h>
45 #include <net/route.h>
49 #include <sys/rwlock.h>
54 #define in6pcb inpcb /* for KAME src sync over BSD*'s */
55 #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */
59 * struct inpcb is the common protocol control block structure used in most
60 * IP transport protocols.
62 * Pointers to local and foreign host table entries, local and foreign socket
63 * numbers, and pointers up (to a socket structure) and down (to a
64 * protocol-specific control block) are stored here.
66 LIST_HEAD(inpcbhead, inpcb);
67 LIST_HEAD(inpcbporthead, inpcbport);
68 typedef u_quad_t inp_gen_t;
71 * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet.
72 * So, AF_INET6 null laddr is also used as AF_INET null laddr, by utilizing
73 * the following structure.
76 u_int32_t ia46_pad32[3];
77 struct in_addr ia46_addr4;
81 * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553. in_conninfo has
82 * some extra padding to accomplish this.
83 * NOTE 2: tcp_syncache.c uses first 5 32-bit words, which identify fport,
84 * lport, faddr to generate hash, so these fields shouldn't be moved.
87 u_int16_t ie_fport; /* foreign port */
88 u_int16_t ie_lport; /* local port */
89 /* protocol dependent part, local and foreign addr */
91 /* foreign host table entry */
92 struct in_addr_4in6 ie46_foreign;
93 struct in6_addr ie6_foreign;
96 /* local host table entry */
97 struct in_addr_4in6 ie46_local;
98 struct in6_addr ie6_local;
100 u_int32_t ie6_zoneid; /* scope zone id */
102 #define ie_faddr ie_dependfaddr.ie46_foreign.ia46_addr4
103 #define ie_laddr ie_dependladdr.ie46_local.ia46_addr4
104 #define ie6_faddr ie_dependfaddr.ie6_foreign
105 #define ie6_laddr ie_dependladdr.ie6_local
108 * XXX The defines for inc_* are hacks and should be changed to direct
114 u_int16_t inc_fibnum; /* XXX was pad, 16 bits is plenty */
115 /* protocol dependent part */
116 struct in_endpoints inc_ie;
120 * Flags for inc_flags.
122 #define INC_ISIPV6 0x01
124 #define inc_isipv6 inc_flags /* temp compatibility */
125 #define inc_fport inc_ie.ie_fport
126 #define inc_lport inc_ie.ie_lport
127 #define inc_faddr inc_ie.ie_faddr
128 #define inc_laddr inc_ie.ie_laddr
129 #define inc6_faddr inc_ie.ie6_faddr
130 #define inc6_laddr inc_ie.ie6_laddr
131 #define inc6_zoneid inc_ie.ie6_zoneid
136 * struct inpcb captures the network layer state for TCP, UDP, and raw IPv4 and
137 * IPv6 sockets. In the case of TCP and UDP, further per-connection state is
138 * hung off of inp_ppcb most of the time. Almost all fields of struct inpcb
139 * are static after creation or protected by a per-inpcb rwlock, inp_lock. A
140 * few fields are protected by multiple locks as indicated in the locking notes
141 * below. For these fields, all of the listed locks must be write-locked for
142 * any modifications. However, these fields can be safely read while any one of
143 * the listed locks are read-locked. This model can permit greater concurrency
144 * for read operations. For example, connections can be looked up while only
145 * holding a read lock on the global pcblist lock. This is important for
146 * performance when attempting to find the connection for a packet given its IP
149 * One noteworthy exception is that the global pcbinfo lock follows a different
150 * set of rules in relation to the inp_list field. Rather than being
151 * write-locked for modifications and read-locked for list iterations, it must
152 * be read-locked during modifications and write-locked during list iterations.
153 * This ensures that the relatively rare global list iterations safely walk a
154 * stable snapshot of connections while allowing more common list modifications
155 * to safely grab the pcblist lock just while adding or removing a connection
156 * from the global list.
159 * (c) - Constant after initialization
160 * (g) - Protected by the pcbgroup lock
161 * (i) - Protected by the inpcb lock
162 * (p) - Protected by the pcbinfo lock for the inpcb
163 * (l) - Protected by the pcblist lock for the inpcb
164 * (h) - Protected by the pcbhash lock for the inpcb
165 * (s) - Protected by another subsystem's locks
166 * (x) - Undefined locking
170 * When a read lock is held, stability of the field is guaranteed; to write
171 * to a field, a write lock must generally be held.
173 * netinet/netinet6-layer code should not assume that the inp_socket pointer
174 * is safe to dereference without inp_lock being held, even for protocols
175 * other than TCP (where the inpcb persists during TIMEWAIT even after the
176 * socket has been freed), or there may be close(2)-related races.
178 * The inp_vflag field is overloaded, and would otherwise ideally be (c).
180 * TODO: Currently only the TCP stack is leveraging the global pcbinfo lock
181 * read-lock usage during modification, this model can be applied to other
182 * protocols (especially SCTP).
185 LIST_ENTRY(inpcb) inp_hash; /* (h/i) hash list */
186 LIST_ENTRY(inpcb) inp_pcbgrouphash; /* (g/i) hash list */
187 LIST_ENTRY(inpcb) inp_list; /* (p/l) list for all PCBs for proto */
188 /* (p[w]) for list iteration */
189 /* (p[r]/l) for addition/removal */
190 void *inp_ppcb; /* (i) pointer to per-protocol pcb */
191 struct inpcbinfo *inp_pcbinfo; /* (c) PCB list info */
192 struct inpcbgroup *inp_pcbgroup; /* (g/i) PCB group list */
193 LIST_ENTRY(inpcb) inp_pcbgroup_wild; /* (g/i/h) group wildcard entry */
194 struct socket *inp_socket; /* (i) back pointer to socket */
195 struct ucred *inp_cred; /* (c) cache of socket cred */
196 u_int32_t inp_flow; /* (i) IPv6 flow information */
197 int inp_flags; /* (i) generic IP/datagram flags */
198 int inp_flags2; /* (i) generic IP/datagram flags #2*/
199 u_char inp_vflag; /* (i) IP version flag (v4/v6) */
200 u_char inp_ip_ttl; /* (i) time to live proto */
201 u_char inp_ip_p; /* (c) protocol proto */
202 u_char inp_ip_minttl; /* (i) minimum TTL or drop */
203 uint32_t inp_flowid; /* (x) flow id / queue id */
204 u_int inp_refcount; /* (i) refcount */
205 void *inp_pspare[5]; /* (x) packet pacing / general use */
206 uint32_t inp_flowtype; /* (x) M_HASHTYPE value */
207 uint32_t inp_rss_listen_bucket; /* (x) overridden RSS listen bucket */
208 u_int inp_ispare[4]; /* (x) packet pacing / user cookie /
211 /* Local and foreign ports, local and foreign addr. */
212 struct in_conninfo inp_inc; /* (i) list for PCB's local port */
214 /* MAC and IPSEC policy information. */
215 struct label *inp_label; /* (i) MAC label */
216 struct inpcbpolicy *inp_sp; /* (s) for IPSEC */
218 /* Protocol-dependent part; options. */
220 u_char inp4_ip_tos; /* (i) type of service proto */
221 struct mbuf *inp4_options; /* (i) IP options */
222 struct ip_moptions *inp4_moptions; /* (i) IP mcast options */
226 struct mbuf *inp6_options;
227 /* (i) IP6 options for outgoing packets */
228 struct ip6_pktopts *inp6_outputopts;
229 /* (i) IP multicast options */
230 struct ip6_moptions *inp6_moptions;
231 /* (i) ICMPv6 code type filter */
232 struct icmp6_filter *inp6_icmp6filt;
233 /* (i) IPV6_CHECKSUM setsockopt */
237 LIST_ENTRY(inpcb) inp_portlist; /* (i/h) */
238 struct inpcbport *inp_phd; /* (i/h) head of this list */
239 #define inp_zero_size offsetof(struct inpcb, inp_gencnt)
240 inp_gen_t inp_gencnt; /* (c) generation count */
241 struct llentry *inp_lle; /* cached L2 information */
242 struct rwlock inp_lock;
243 rt_gen_t inp_rt_cookie; /* generation for route entry */
244 union { /* cached L3 information */
245 struct route inpu_route;
246 struct route_in6 inpu_route6;
248 #define inp_route inp_rtu.inpu_route
249 #define inp_route6 inp_rtu.inpu_route6
251 #define inp_fport inp_inc.inc_fport
252 #define inp_lport inp_inc.inc_lport
253 #define inp_faddr inp_inc.inc_faddr
254 #define inp_laddr inp_inc.inc_laddr
255 #define inp_ip_tos inp_depend4.inp4_ip_tos
256 #define inp_options inp_depend4.inp4_options
257 #define inp_moptions inp_depend4.inp4_moptions
259 #define in6p_faddr inp_inc.inc6_faddr
260 #define in6p_laddr inp_inc.inc6_laddr
261 #define in6p_zoneid inp_inc.inc6_zoneid
262 #define in6p_hops inp_depend6.inp6_hops /* default hop limit */
263 #define in6p_flowinfo inp_flow
264 #define in6p_options inp_depend6.inp6_options
265 #define in6p_outputopts inp_depend6.inp6_outputopts
266 #define in6p_moptions inp_depend6.inp6_moptions
267 #define in6p_icmp6filt inp_depend6.inp6_icmp6filt
268 #define in6p_cksum inp_depend6.inp6_cksum
270 #define inp_vnet inp_pcbinfo->ipi_vnet
273 * The range of the generation count, as used in this implementation, is 9e19.
274 * We would have to create 300 billion connections per second for this number
275 * to roll over in a year. This seems sufficiently unlikely that we simply
276 * don't concern ourselves with that possibility.
280 * Interface exported to userland by various protocols which use inpcbs. Hack
281 * alert -- only define if struct xsocket is in scope.
283 #ifdef _SYS_SOCKETVAR_H_
285 size_t xi_len; /* length of this structure */
287 struct xsocket xi_socket;
288 u_quad_t xi_alignment_hack;
292 size_t xig_len; /* length of this structure */
293 u_int xig_count; /* number of PCBs at this time */
294 inp_gen_t xig_gen; /* generation count at this time */
295 so_gen_t xig_sogen; /* socket generation count at this time */
297 #endif /* _SYS_SOCKETVAR_H_ */
300 LIST_ENTRY(inpcbport) phd_hash;
301 struct inpcbhead phd_pcblist;
306 * Global data structure for each high-level protocol (UDP, TCP, ...) in both
307 * IPv4 and IPv6. Holds inpcb lists and information for managing them.
309 * Each pcbinfo is protected by three locks: ipi_lock, ipi_hash_lock and
311 * - ipi_lock covering the global pcb list stability during loop iteration,
312 * - ipi_hash_lock covering the hashed lookup tables,
313 * - ipi_list_lock covering mutable global fields (such as the global
319 * inpcb locks (before)
320 * ipi_list locks (before)
321 * {ipi_hash_lock, pcbgroup locks}
325 * (c) Constant or nearly constant after initialisation
326 * (g) Locked by ipi_lock
327 * (l) Locked by ipi_list_lock
328 * (h) Read using either ipi_hash_lock or inpcb lock; write requires both
329 * (p) Protected by one or more pcbgroup locks
330 * (x) Synchronisation properties poorly defined
334 * Global lock protecting full inpcb list traversal
336 struct rwlock ipi_lock;
339 * Global list of inpcbs on the protocol.
341 struct inpcbhead *ipi_listhead; /* (g/l) */
342 u_int ipi_count; /* (l) */
345 * Generation count -- incremented each time a connection is allocated
348 u_quad_t ipi_gencnt; /* (l) */
351 * Fields associated with port lookup and allocation.
353 u_short ipi_lastport; /* (x) */
354 u_short ipi_lastlow; /* (x) */
355 u_short ipi_lasthi; /* (x) */
358 * UMA zone from which inpcbs are allocated for this protocol.
360 struct uma_zone *ipi_zone; /* (c) */
363 * Connection groups associated with this protocol. These fields are
364 * constant, but pcbgroup structures themselves are protected by
365 * per-pcbgroup locks.
367 struct inpcbgroup *ipi_pcbgroups; /* (c) */
368 u_int ipi_npcbgroups; /* (c) */
369 u_int ipi_hashfields; /* (c) */
372 * Global lock protecting non-pcbgroup hash lookup tables.
374 struct rwlock ipi_hash_lock;
377 * Global hash of inpcbs, hashed by local and foreign addresses and
380 struct inpcbhead *ipi_hashbase; /* (h) */
381 u_long ipi_hashmask; /* (h) */
384 * Global hash of inpcbs, hashed by only local port number.
386 struct inpcbporthead *ipi_porthashbase; /* (h) */
387 u_long ipi_porthashmask; /* (h) */
390 * List of wildcard inpcbs for use with pcbgroups. In the past, was
391 * per-pcbgroup but is now global. All pcbgroup locks must be held
392 * to modify the list, so any is sufficient to read it.
394 struct inpcbhead *ipi_wildbase; /* (p) */
395 u_long ipi_wildmask; /* (p) */
398 * Pointer to network stack instance
400 struct vnet *ipi_vnet; /* (c) */
408 * Global lock protecting global inpcb list, inpcb count, etc.
410 struct rwlock ipi_list_lock;
415 * Connection groups hold sets of connections that have similar CPU/thread
416 * affinity. Each connection belongs to exactly one connection group.
420 * Per-connection group hash of inpcbs, hashed by local and foreign
421 * addresses and port numbers.
423 struct inpcbhead *ipg_hashbase; /* (c) */
424 u_long ipg_hashmask; /* (c) */
427 * Notional affinity of this pcbgroup.
429 u_int ipg_cpu; /* (p) */
432 * Per-connection group lock, not to be confused with ipi_lock.
433 * Protects the hash table hung off the group, but also the global
434 * wildcard list in inpcbinfo.
437 } __aligned(CACHE_LINE_SIZE);
439 #define INP_LOCK_INIT(inp, d, t) \
440 rw_init_flags(&(inp)->inp_lock, (t), RW_RECURSE | RW_DUPOK)
441 #define INP_LOCK_DESTROY(inp) rw_destroy(&(inp)->inp_lock)
442 #define INP_RLOCK(inp) rw_rlock(&(inp)->inp_lock)
443 #define INP_WLOCK(inp) rw_wlock(&(inp)->inp_lock)
444 #define INP_TRY_RLOCK(inp) rw_try_rlock(&(inp)->inp_lock)
445 #define INP_TRY_WLOCK(inp) rw_try_wlock(&(inp)->inp_lock)
446 #define INP_RUNLOCK(inp) rw_runlock(&(inp)->inp_lock)
447 #define INP_WUNLOCK(inp) rw_wunlock(&(inp)->inp_lock)
448 #define INP_TRY_UPGRADE(inp) rw_try_upgrade(&(inp)->inp_lock)
449 #define INP_DOWNGRADE(inp) rw_downgrade(&(inp)->inp_lock)
450 #define INP_WLOCKED(inp) rw_wowned(&(inp)->inp_lock)
451 #define INP_LOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_LOCKED)
452 #define INP_RLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_RLOCKED)
453 #define INP_WLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_WLOCKED)
454 #define INP_UNLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_UNLOCKED)
457 * These locking functions are for inpcb consumers outside of sys/netinet,
458 * more specifically, they were added for the benefit of TOE drivers. The
459 * macros are reserved for use by the stack.
461 void inp_wlock(struct inpcb *);
462 void inp_wunlock(struct inpcb *);
463 void inp_rlock(struct inpcb *);
464 void inp_runlock(struct inpcb *);
467 void inp_lock_assert(struct inpcb *);
468 void inp_unlock_assert(struct inpcb *);
471 inp_lock_assert(struct inpcb *inp __unused)
476 inp_unlock_assert(struct inpcb *inp __unused)
482 void inp_apply_all(void (*func)(struct inpcb *, void *), void *arg);
483 int inp_ip_tos_get(const struct inpcb *inp);
484 void inp_ip_tos_set(struct inpcb *inp, int val);
486 inp_inpcbtosocket(struct inpcb *inp);
488 inp_inpcbtotcpcb(struct inpcb *inp);
489 void inp_4tuple_get(struct inpcb *inp, uint32_t *laddr, uint16_t *lp,
490 uint32_t *faddr, uint16_t *fp);
491 short inp_so_options(const struct inpcb *inp);
495 #define INP_INFO_LOCK_INIT(ipi, d) \
496 rw_init_flags(&(ipi)->ipi_lock, (d), RW_RECURSE)
497 #define INP_INFO_LOCK_DESTROY(ipi) rw_destroy(&(ipi)->ipi_lock)
498 #define INP_INFO_RLOCK(ipi) rw_rlock(&(ipi)->ipi_lock)
499 #define INP_INFO_WLOCK(ipi) rw_wlock(&(ipi)->ipi_lock)
500 #define INP_INFO_TRY_RLOCK(ipi) rw_try_rlock(&(ipi)->ipi_lock)
501 #define INP_INFO_TRY_WLOCK(ipi) rw_try_wlock(&(ipi)->ipi_lock)
502 #define INP_INFO_TRY_UPGRADE(ipi) rw_try_upgrade(&(ipi)->ipi_lock)
503 #define INP_INFO_WLOCKED(ipi) rw_wowned(&(ipi)->ipi_lock)
504 #define INP_INFO_RUNLOCK(ipi) rw_runlock(&(ipi)->ipi_lock)
505 #define INP_INFO_WUNLOCK(ipi) rw_wunlock(&(ipi)->ipi_lock)
506 #define INP_INFO_LOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_LOCKED)
507 #define INP_INFO_RLOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_RLOCKED)
508 #define INP_INFO_WLOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_WLOCKED)
509 #define INP_INFO_UNLOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_UNLOCKED)
511 #define INP_LIST_LOCK_INIT(ipi, d) \
512 rw_init_flags(&(ipi)->ipi_list_lock, (d), 0)
513 #define INP_LIST_LOCK_DESTROY(ipi) rw_destroy(&(ipi)->ipi_list_lock)
514 #define INP_LIST_RLOCK(ipi) rw_rlock(&(ipi)->ipi_list_lock)
515 #define INP_LIST_WLOCK(ipi) rw_wlock(&(ipi)->ipi_list_lock)
516 #define INP_LIST_TRY_RLOCK(ipi) rw_try_rlock(&(ipi)->ipi_list_lock)
517 #define INP_LIST_TRY_WLOCK(ipi) rw_try_wlock(&(ipi)->ipi_list_lock)
518 #define INP_LIST_TRY_UPGRADE(ipi) rw_try_upgrade(&(ipi)->ipi_list_lock)
519 #define INP_LIST_RUNLOCK(ipi) rw_runlock(&(ipi)->ipi_list_lock)
520 #define INP_LIST_WUNLOCK(ipi) rw_wunlock(&(ipi)->ipi_list_lock)
521 #define INP_LIST_LOCK_ASSERT(ipi) \
522 rw_assert(&(ipi)->ipi_list_lock, RA_LOCKED)
523 #define INP_LIST_RLOCK_ASSERT(ipi) \
524 rw_assert(&(ipi)->ipi_list_lock, RA_RLOCKED)
525 #define INP_LIST_WLOCK_ASSERT(ipi) \
526 rw_assert(&(ipi)->ipi_list_lock, RA_WLOCKED)
527 #define INP_LIST_UNLOCK_ASSERT(ipi) \
528 rw_assert(&(ipi)->ipi_list_lock, RA_UNLOCKED)
530 #define INP_HASH_LOCK_INIT(ipi, d) \
531 rw_init_flags(&(ipi)->ipi_hash_lock, (d), 0)
532 #define INP_HASH_LOCK_DESTROY(ipi) rw_destroy(&(ipi)->ipi_hash_lock)
533 #define INP_HASH_RLOCK(ipi) rw_rlock(&(ipi)->ipi_hash_lock)
534 #define INP_HASH_WLOCK(ipi) rw_wlock(&(ipi)->ipi_hash_lock)
535 #define INP_HASH_RUNLOCK(ipi) rw_runlock(&(ipi)->ipi_hash_lock)
536 #define INP_HASH_WUNLOCK(ipi) rw_wunlock(&(ipi)->ipi_hash_lock)
537 #define INP_HASH_LOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_hash_lock, \
539 #define INP_HASH_WLOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_hash_lock, \
542 #define INP_GROUP_LOCK_INIT(ipg, d) mtx_init(&(ipg)->ipg_lock, (d), NULL, \
544 #define INP_GROUP_LOCK_DESTROY(ipg) mtx_destroy(&(ipg)->ipg_lock)
546 #define INP_GROUP_LOCK(ipg) mtx_lock(&(ipg)->ipg_lock)
547 #define INP_GROUP_LOCK_ASSERT(ipg) mtx_assert(&(ipg)->ipg_lock, MA_OWNED)
548 #define INP_GROUP_UNLOCK(ipg) mtx_unlock(&(ipg)->ipg_lock)
550 #define INP_PCBHASH(faddr, lport, fport, mask) \
551 (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask))
552 #define INP_PCBPORTHASH(lport, mask) \
553 (ntohs((lport)) & (mask))
554 #define INP6_PCBHASHKEY(faddr) ((faddr)->s6_addr32[3])
557 * Flags for inp_vflags -- historically version flags only
561 #define INP_IPV6PROTO 0x4 /* opened under IPv6 protocol */
564 * Flags for inp_flags.
566 #define INP_RECVOPTS 0x00000001 /* receive incoming IP options */
567 #define INP_RECVRETOPTS 0x00000002 /* receive IP options for reply */
568 #define INP_RECVDSTADDR 0x00000004 /* receive IP dst address */
569 #define INP_HDRINCL 0x00000008 /* user supplies entire IP header */
570 #define INP_HIGHPORT 0x00000010 /* user wants "high" port binding */
571 #define INP_LOWPORT 0x00000020 /* user wants "low" port binding */
572 #define INP_ANONPORT 0x00000040 /* port chosen for user */
573 #define INP_RECVIF 0x00000080 /* receive incoming interface */
574 #define INP_MTUDISC 0x00000100 /* user can do MTU discovery */
575 /* 0x000200 unused: was INP_FAITH */
576 #define INP_RECVTTL 0x00000400 /* receive incoming IP TTL */
577 #define INP_DONTFRAG 0x00000800 /* don't fragment packet */
578 #define INP_BINDANY 0x00001000 /* allow bind to any address */
579 #define INP_INHASHLIST 0x00002000 /* in_pcbinshash() has been called */
580 #define INP_RECVTOS 0x00004000 /* receive incoming IP TOS */
581 #define IN6P_IPV6_V6ONLY 0x00008000 /* restrict AF_INET6 socket for v6 */
582 #define IN6P_PKTINFO 0x00010000 /* receive IP6 dst and I/F */
583 #define IN6P_HOPLIMIT 0x00020000 /* receive hoplimit */
584 #define IN6P_HOPOPTS 0x00040000 /* receive hop-by-hop options */
585 #define IN6P_DSTOPTS 0x00080000 /* receive dst options after rthdr */
586 #define IN6P_RTHDR 0x00100000 /* receive routing header */
587 #define IN6P_RTHDRDSTOPTS 0x00200000 /* receive dstoptions before rthdr */
588 #define IN6P_TCLASS 0x00400000 /* receive traffic class value */
589 #define IN6P_AUTOFLOWLABEL 0x00800000 /* attach flowlabel automatically */
590 #define INP_TIMEWAIT 0x01000000 /* in TIMEWAIT, ppcb is tcptw */
591 #define INP_ONESBCAST 0x02000000 /* send all-ones broadcast */
592 #define INP_DROPPED 0x04000000 /* protocol drop flag */
593 #define INP_SOCKREF 0x08000000 /* strong socket reference */
594 #define INP_RESERVED_0 0x10000000 /* reserved field */
595 #define INP_RESERVED_1 0x20000000 /* reserved field */
596 #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */
597 #define IN6P_MTU 0x80000000 /* receive path MTU */
599 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
600 INP_RECVIF|INP_RECVTTL|INP_RECVTOS|\
601 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
602 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
603 IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\
607 * Flags for inp_flags2.
609 #define INP_LLE_VALID 0x00000001 /* cached lle is valid */
610 #define INP_RT_VALID 0x00000002 /* cached rtentry is valid */
611 #define INP_PCBGROUPWILD 0x00000004 /* in pcbgroup wildcard list */
612 #define INP_REUSEPORT 0x00000008 /* SO_REUSEPORT option is set */
613 #define INP_FREED 0x00000010 /* inp itself is not valid */
614 #define INP_REUSEADDR 0x00000020 /* SO_REUSEADDR option is set */
615 #define INP_BINDMULTI 0x00000040 /* IP_BINDMULTI option is set */
616 #define INP_RSS_BUCKET_SET 0x00000080 /* IP_RSS_LISTEN_BUCKET is set */
617 #define INP_RECVFLOWID 0x00000100 /* populate recv datagram with flow info */
618 #define INP_RECVRSSBUCKETID 0x00000200 /* populate recv datagram with bucket id */
621 * Flags passed to in_pcblookup*() functions.
623 #define INPLOOKUP_WILDCARD 0x00000001 /* Allow wildcard sockets. */
624 #define INPLOOKUP_RLOCKPCB 0x00000002 /* Return inpcb read-locked. */
625 #define INPLOOKUP_WLOCKPCB 0x00000004 /* Return inpcb write-locked. */
627 #define INPLOOKUP_MASK (INPLOOKUP_WILDCARD | INPLOOKUP_RLOCKPCB | \
630 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
631 #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */
633 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family
635 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af)
638 * Constants for pcbinfo.ipi_hashfields.
640 #define IPI_HASHFIELDS_NONE 0
641 #define IPI_HASHFIELDS_2TUPLE 1
642 #define IPI_HASHFIELDS_4TUPLE 2
645 VNET_DECLARE(int, ipport_reservedhigh);
646 VNET_DECLARE(int, ipport_reservedlow);
647 VNET_DECLARE(int, ipport_lowfirstauto);
648 VNET_DECLARE(int, ipport_lowlastauto);
649 VNET_DECLARE(int, ipport_firstauto);
650 VNET_DECLARE(int, ipport_lastauto);
651 VNET_DECLARE(int, ipport_hifirstauto);
652 VNET_DECLARE(int, ipport_hilastauto);
653 VNET_DECLARE(int, ipport_randomized);
654 VNET_DECLARE(int, ipport_randomcps);
655 VNET_DECLARE(int, ipport_randomtime);
656 VNET_DECLARE(int, ipport_stoprandom);
657 VNET_DECLARE(int, ipport_tcpallocs);
659 #define V_ipport_reservedhigh VNET(ipport_reservedhigh)
660 #define V_ipport_reservedlow VNET(ipport_reservedlow)
661 #define V_ipport_lowfirstauto VNET(ipport_lowfirstauto)
662 #define V_ipport_lowlastauto VNET(ipport_lowlastauto)
663 #define V_ipport_firstauto VNET(ipport_firstauto)
664 #define V_ipport_lastauto VNET(ipport_lastauto)
665 #define V_ipport_hifirstauto VNET(ipport_hifirstauto)
666 #define V_ipport_hilastauto VNET(ipport_hilastauto)
667 #define V_ipport_randomized VNET(ipport_randomized)
668 #define V_ipport_randomcps VNET(ipport_randomcps)
669 #define V_ipport_randomtime VNET(ipport_randomtime)
670 #define V_ipport_stoprandom VNET(ipport_stoprandom)
671 #define V_ipport_tcpallocs VNET(ipport_tcpallocs)
673 void in_pcbinfo_destroy(struct inpcbinfo *);
674 void in_pcbinfo_init(struct inpcbinfo *, const char *, struct inpcbhead *,
675 int, int, char *, uma_init, uma_fini, uint32_t, u_int);
677 int in_pcbbind_check_bindmulti(const struct inpcb *ni,
678 const struct inpcb *oi);
681 in_pcbgroup_byhash(struct inpcbinfo *, u_int, uint32_t);
683 in_pcbgroup_byinpcb(struct inpcb *);
685 in_pcbgroup_bytuple(struct inpcbinfo *, struct in_addr, u_short,
686 struct in_addr, u_short);
687 void in_pcbgroup_destroy(struct inpcbinfo *);
688 int in_pcbgroup_enabled(struct inpcbinfo *);
689 void in_pcbgroup_init(struct inpcbinfo *, u_int, int);
690 void in_pcbgroup_remove(struct inpcb *);
691 void in_pcbgroup_update(struct inpcb *);
692 void in_pcbgroup_update_mbuf(struct inpcb *, struct mbuf *);
694 void in_pcbpurgeif0(struct inpcbinfo *, struct ifnet *);
695 int in_pcballoc(struct socket *, struct inpcbinfo *);
696 int in_pcbbind(struct inpcb *, struct sockaddr *, struct ucred *);
697 int in_pcb_lport(struct inpcb *, struct in_addr *, u_short *,
698 struct ucred *, int);
699 int in_pcbbind_setup(struct inpcb *, struct sockaddr *, in_addr_t *,
700 u_short *, struct ucred *);
701 int in_pcbconnect(struct inpcb *, struct sockaddr *, struct ucred *);
702 int in_pcbconnect_mbuf(struct inpcb *, struct sockaddr *, struct ucred *,
704 int in_pcbconnect_setup(struct inpcb *, struct sockaddr *, in_addr_t *,
705 u_short *, in_addr_t *, u_short *, struct inpcb **,
707 void in_pcbdetach(struct inpcb *);
708 void in_pcbdisconnect(struct inpcb *);
709 void in_pcbdrop(struct inpcb *);
710 void in_pcbfree(struct inpcb *);
711 int in_pcbinshash(struct inpcb *);
712 int in_pcbinshash_nopcbgroup(struct inpcb *);
713 int in_pcbladdr(struct inpcb *, struct in_addr *, struct in_addr *,
716 in_pcblookup_local(struct inpcbinfo *,
717 struct in_addr, u_short, int, struct ucred *);
719 in_pcblookup(struct inpcbinfo *, struct in_addr, u_int,
720 struct in_addr, u_int, int, struct ifnet *);
722 in_pcblookup_mbuf(struct inpcbinfo *, struct in_addr, u_int,
723 struct in_addr, u_int, int, struct ifnet *, struct mbuf *);
724 void in_pcbnotifyall(struct inpcbinfo *pcbinfo, struct in_addr,
725 int, struct inpcb *(*)(struct inpcb *, int));
726 void in_pcbref(struct inpcb *);
727 void in_pcbrehash(struct inpcb *);
728 void in_pcbrehash_mbuf(struct inpcb *, struct mbuf *);
729 int in_pcbrele(struct inpcb *);
730 int in_pcbrele_rlocked(struct inpcb *);
731 int in_pcbrele_wlocked(struct inpcb *);
732 void in_losing(struct inpcb *);
733 void in_pcbsetsolabel(struct socket *so);
734 int in_getpeeraddr(struct socket *so, struct sockaddr **nam);
735 int in_getsockaddr(struct socket *so, struct sockaddr **nam);
737 in_sockaddr(in_port_t port, struct in_addr *addr);
738 void in_pcbsosetlabel(struct socket *so);
741 #endif /* !_NETINET_IN_PCB_H_ */