FreeBSD/Linux Kernel Cross Reference
sys/netinet/in_pcb.h
1 /*-
2 * Copyright (c) 1982, 1986, 1990, 1993
3 * The Regents of the University of California.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 4. Neither the name of the University nor the names of its contributors
15 * may be used to endorse or promote products derived from this software
16 * without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
31 * $FreeBSD$
32 */
33
34 #ifndef _NETINET_IN_PCB_H_
35 #define _NETINET_IN_PCB_H_
36
37 #include <sys/queue.h>
38 #include <sys/_lock.h>
39 #include <sys/_mutex.h>
40 #include <sys/_rwlock.h>
41
42 #include <net/route.h>
43
44 #ifdef _KERNEL
45 #include <sys/rwlock.h>
46 #endif
47
48 #define in6pcb inpcb /* for KAME src sync over BSD*'s */
49 #define in6p_sp inp_sp /* for KAME src sync over BSD*'s */
50 struct inpcbpolicy;
51
52 /*
53 * struct inpcb is the common protocol control block structure used in most
54 * IP transport protocols.
55 *
56 * Pointers to local and foreign host table entries, local and foreign socket
57 * numbers, and pointers up (to a socket structure) and down (to a
58 * protocol-specific control block) are stored here.
59 */
60 LIST_HEAD(inpcbhead, inpcb);
61 LIST_HEAD(inpcbporthead, inpcbport);
62 typedef u_quad_t inp_gen_t;
63
64 /*
65 * PCB with AF_INET6 null bind'ed laddr can receive AF_INET input packet.
66 * So, AF_INET6 null laddr is also used as AF_INET null laddr, by utilizing
67 * the following structure.
68 */
69 struct in_addr_4in6 {
70 u_int32_t ia46_pad32[3];
71 struct in_addr ia46_addr4;
72 };
73
74 /*
75 * NOTE: ipv6 addrs should be 64-bit aligned, per RFC 2553. in_conninfo has
76 * some extra padding to accomplish this.
77 */
78 struct in_endpoints {
79 u_int16_t ie_fport; /* foreign port */
80 u_int16_t ie_lport; /* local port */
81 /* protocol dependent part, local and foreign addr */
82 union {
83 /* foreign host table entry */
84 struct in_addr_4in6 ie46_foreign;
85 struct in6_addr ie6_foreign;
86 } ie_dependfaddr;
87 union {
88 /* local host table entry */
89 struct in_addr_4in6 ie46_local;
90 struct in6_addr ie6_local;
91 } ie_dependladdr;
92 };
93 #define ie_faddr ie_dependfaddr.ie46_foreign.ia46_addr4
94 #define ie_laddr ie_dependladdr.ie46_local.ia46_addr4
95 #define ie6_faddr ie_dependfaddr.ie6_foreign
96 #define ie6_laddr ie_dependladdr.ie6_local
97
98 /*
99 * XXX The defines for inc_* are hacks and should be changed to direct
100 * references.
101 */
102 struct in_conninfo {
103 u_int8_t inc_flags;
104 u_int8_t inc_len;
105 u_int16_t inc_fibnum; /* XXX was pad, 16 bits is plenty */
106 /* protocol dependent part */
107 struct in_endpoints inc_ie;
108 };
109 #define inc_isipv6 inc_flags /* temp compatability */
110 #define inc_fport inc_ie.ie_fport
111 #define inc_lport inc_ie.ie_lport
112 #define inc_faddr inc_ie.ie_faddr
113 #define inc_laddr inc_ie.ie_laddr
114 #define inc6_faddr inc_ie.ie6_faddr
115 #define inc6_laddr inc_ie.ie6_laddr
116
117 struct icmp6_filter;
118
119 /*-
120 * struct inpcb captures the network layer state for TCP, UDP, and raw IPv4
121 * and IPv6 sockets. In the case of TCP, further per-connection state is
122 * hung off of inp_ppcb most of the time. Almost all fields of struct inpcb
123 * are static after creation or protected by a per-inpcb rwlock, inp_lock. A
124 * few fields also require the global pcbinfo lock for the inpcb to be held,
125 * when modified, such as the global connection lists and hashes, as well as
126 * binding information (which affects which hash a connection is on). This
127 * model means that connections can be looked up without holding the
128 * per-connection lock, which is important for performance when attempting to
129 * find the connection for a packet given its IP and port tuple. Writing to
130 * these fields that write locks be held on both the inpcb and global locks.
131 *
132 * Key:
133 * (c) - Constant after initialization
134 * (i) - Protected by the inpcb lock
135 * (p) - Protected by the pcbinfo lock for the inpcb
136 * (s) - Protected by another subsystem's locks
137 * (x) - Undefined locking
138 *
139 * A few other notes:
140 *
141 * When a read lock is held, stability of the field is guaranteed; to write
142 * to a field, a write lock must generally be held.
143 *
144 * netinet/netinet6-layer code should not assume that the inp_socket pointer
145 * is safe to dereference without inp_lock being held, even for protocols
146 * other than TCP (where the inpcb persists during TIMEWAIT even after the
147 * socket has been freed), or there may be close(2)-related races.
148 *
149 * The inp_vflag field is overloaded, and would otherwise ideally be (c).
150 */
151 struct inpcb {
152 LIST_ENTRY(inpcb) inp_hash; /* (i/p) hash list */
153 LIST_ENTRY(inpcb) inp_list; /* (i/p) list for all PCBs for proto */
154 void *inp_ppcb; /* (i) pointer to per-protocol pcb */
155 struct inpcbinfo *inp_pcbinfo; /* (c) PCB list info */
156 struct socket *inp_socket; /* (i) back pointer to socket */
157 u_int32_t inp_flow; /* (i) IPv6 flow information */
158 int inp_flags; /* (i) generic IP/datagram flags */
159 u_char inp_vflag; /* (i) IP version flag (v4/v6) */
160 u_char inp_ip_ttl; /* (i) time to live proto */
161 u_char inp_ip_p; /* (c) protocol proto */
162 u_char inp_ip_minttl; /* (i) minimum TTL or drop */
163 uint32_t inp_ispare1; /* (x) connection id / queue id */
164 void *inp_pspare; /* (x) rtentry / general use */
165 struct ucred *inp_cred; /* (c) cache of socket cred */
166
167 /* Local and foreign ports, local and foreign addr. */
168 struct in_conninfo inp_inc; /* (i/p) list for PCB's local port */
169
170 /* MAC and IPSEC policy information. */
171 struct label *inp_label; /* (i) MAC label */
172 struct inpcbpolicy *inp_sp; /* (s) for IPSEC */
173
174 /* Protocol-dependent part; options. */
175 struct {
176 u_char inp4_ip_tos; /* (i) type of service proto */
177 struct mbuf *inp4_options; /* (i) IP options */
178 struct ip_moptions *inp4_moptions; /* (i) IP mcast options */
179 } inp_depend4;
180 struct {
181 /* (i) IP options */
182 struct mbuf *inp6_options;
183 /* (i) IP6 options for outgoing packets */
184 struct ip6_pktopts *inp6_outputopts;
185 /* (i) IP multicast options */
186 struct ip6_moptions *inp6_moptions;
187 /* (i) ICMPv6 code type filter */
188 struct icmp6_filter *inp6_icmp6filt;
189 /* (i) IPV6_CHECKSUM setsockopt */
190 int inp6_cksum;
191 short inp6_hops;
192 } inp_depend6;
193 LIST_ENTRY(inpcb) inp_portlist; /* (i/p) */
194 struct inpcbport *inp_phd; /* (i/p) head of this list */
195 #define inp_zero_size offsetof(struct inpcb, inp_gencnt)
196 inp_gen_t inp_gencnt; /* (c) generation count */
197 struct rwlock inp_lock;
198 };
199 #define inp_fport inp_inc.inc_fport
200 #define inp_lport inp_inc.inc_lport
201 #define inp_faddr inp_inc.inc_faddr
202 #define inp_laddr inp_inc.inc_laddr
203 #define inp_ip_tos inp_depend4.inp4_ip_tos
204 #define inp_options inp_depend4.inp4_options
205 #define inp_moptions inp_depend4.inp4_moptions
206
207 #define in6p_faddr inp_inc.inc6_faddr
208 #define in6p_laddr inp_inc.inc6_laddr
209 #define in6p_hops inp_depend6.inp6_hops /* default hop limit */
210 #define in6p_ip6_nxt inp_ip_p
211 #define in6p_flowinfo inp_flow
212 #define in6p_vflag inp_vflag
213 #define in6p_options inp_depend6.inp6_options
214 #define in6p_outputopts inp_depend6.inp6_outputopts
215 #define in6p_moptions inp_depend6.inp6_moptions
216 #define in6p_icmp6filt inp_depend6.inp6_icmp6filt
217 #define in6p_cksum inp_depend6.inp6_cksum
218 #define in6p_flags inp_flags /* for KAME src sync over BSD*'s */
219 #define in6p_socket inp_socket /* for KAME src sync over BSD*'s */
220 #define in6p_lport inp_lport /* for KAME src sync over BSD*'s */
221 #define in6p_fport inp_fport /* for KAME src sync over BSD*'s */
222 #define in6p_ppcb inp_ppcb /* for KAME src sync over BSD*'s */
223
224 /*
225 * The range of the generation count, as used in this implementation, is 9e19.
226 * We would have to create 300 billion connections per second for this number
227 * to roll over in a year. This seems sufficiently unlikely that we simply
228 * don't concern ourselves with that possibility.
229 */
230
231 /*
232 * Interface exported to userland by various protocols which use inpcbs. Hack
233 * alert -- only define if struct xsocket is in scope.
234 */
235 #ifdef _SYS_SOCKETVAR_H_
236 struct xinpcb {
237 size_t xi_len; /* length of this structure */
238 struct inpcb xi_inp;
239 struct xsocket xi_socket;
240 u_quad_t xi_alignment_hack;
241 };
242
243 struct xinpgen {
244 size_t xig_len; /* length of this structure */
245 u_int xig_count; /* number of PCBs at this time */
246 inp_gen_t xig_gen; /* generation count at this time */
247 so_gen_t xig_sogen; /* socket generation count at this time */
248 };
249 #endif /* _SYS_SOCKETVAR_H_ */
250
251 struct inpcbport {
252 LIST_ENTRY(inpcbport) phd_hash;
253 struct inpcbhead phd_pcblist;
254 u_short phd_port;
255 };
256
257 /*
258 * Global data structure for each high-level protocol (UDP, TCP, ...) in both
259 * IPv4 and IPv6. Holds inpcb lists and information for managing them.
260 */
261 struct inpcbinfo {
262 /*
263 * Global list of inpcbs on the protocol.
264 */
265 struct inpcbhead *ipi_listhead;
266 u_int ipi_count;
267
268 /*
269 * Global hash of inpcbs, hashed by local and foreign addresses and
270 * port numbers.
271 */
272 struct inpcbhead *ipi_hashbase;
273 u_long ipi_hashmask;
274
275 /*
276 * Global hash of inpcbs, hashed by only local port number.
277 */
278 struct inpcbporthead *ipi_porthashbase;
279 u_long ipi_porthashmask;
280
281 /*
282 * Fields associated with port lookup and allocation.
283 */
284 u_short ipi_lastport;
285 u_short ipi_lastlow;
286 u_short ipi_lasthi;
287
288 /*
289 * UMA zone from which inpcbs are allocated for this protocol.
290 */
291 struct uma_zone *ipi_zone;
292
293 /*
294 * Generation count--incremented each time a connection is allocated
295 * or freed.
296 */
297 u_quad_t ipi_gencnt;
298 struct rwlock ipi_lock;
299
300 /*
301 * vimage 1
302 * general use 1
303 */
304 void *ipi_pspare[2];
305 };
306
307 #define INP_LOCK_INIT(inp, d, t) \
308 rw_init_flags(&(inp)->inp_lock, (t), RW_RECURSE | RW_DUPOK)
309 #define INP_LOCK_DESTROY(inp) rw_destroy(&(inp)->inp_lock)
310 #define INP_RLOCK(inp) rw_rlock(&(inp)->inp_lock)
311 #define INP_WLOCK(inp) rw_wlock(&(inp)->inp_lock)
312 #define INP_TRY_RLOCK(inp) rw_try_rlock(&(inp)->inp_lock)
313 #define INP_TRY_WLOCK(inp) rw_try_wlock(&(inp)->inp_lock)
314 #define INP_RUNLOCK(inp) rw_runlock(&(inp)->inp_lock)
315 #define INP_WUNLOCK(inp) rw_wunlock(&(inp)->inp_lock)
316 #define INP_LOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_LOCKED)
317 #define INP_RLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_RLOCKED)
318 #define INP_WLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_WLOCKED)
319 #define INP_UNLOCK_ASSERT(inp) rw_assert(&(inp)->inp_lock, RA_UNLOCKED)
320
321 #ifdef _KERNEL
322 /*
323 * These locking functions are for inpcb consumers outside of sys/netinet,
324 * more specifically, they were added for the benefit of TOE drivers. The
325 * macros are reserved for use by the stack.
326 */
327 void inp_wlock(struct inpcb *);
328 void inp_wunlock(struct inpcb *);
329 void inp_rlock(struct inpcb *);
330 void inp_runlock(struct inpcb *);
331
332 #ifdef INVARIANTS
333 void inp_lock_assert(struct inpcb *);
334 void inp_unlock_assert(struct inpcb *);
335 void inp_wlock_assert(struct inpcb *);
336 void inp_wunlock_assert(struct inpcb *);
337 void inp_rlock_assert(struct inpcb *);
338 void inp_runlock_assert(struct inpcb *);
339
340 #else
341 static __inline void
342 inp_lock_assert(struct inpcb *inp __unused)
343 {
344 }
345
346 static __inline void
347 inp_unlock_assert(struct inpcb *inp __unused)
348 {
349 }
350
351 static __inline void
352 inp_wlock_assert(struct inpcb *inp __unused)
353 {
354 }
355
356 static __inline void
357 inp_wunlock_assert(struct inpcb *inp __unused)
358 {
359 }
360
361 static __inline void
362 inp_rlock_assert(struct inpcb *inp __unused)
363 {
364 }
365
366 static __inline void
367 inp_runlock_assert(struct inpcb *inp __unused)
368 {
369 }
370
371
372 #endif
373
374 void inp_apply_all(void (*func)(struct inpcb *, void *), void *arg);
375 int inp_ip_tos_get(const struct inpcb *inp);
376 void inp_ip_tos_set(struct inpcb *inp, int val);
377 struct socket *
378 inp_inpcbtosocket(struct inpcb *inp);
379 struct tcpcb *
380 inp_inpcbtotcpcb(struct inpcb *inp);
381 void inp_4tuple_get(struct inpcb *inp, uint32_t *laddr, uint16_t *lp,
382 uint32_t *faddr, uint16_t *fp);
383
384 #endif /* _KERNEL */
385
386 #define INP_INFO_LOCK_INIT(ipi, d) \
387 rw_init_flags(&(ipi)->ipi_lock, (d), RW_RECURSE)
388 #define INP_INFO_LOCK_DESTROY(ipi) rw_destroy(&(ipi)->ipi_lock)
389 #define INP_INFO_RLOCK(ipi) rw_rlock(&(ipi)->ipi_lock)
390 #define INP_INFO_WLOCK(ipi) rw_wlock(&(ipi)->ipi_lock)
391 #define INP_INFO_TRY_RLOCK(ipi) rw_try_rlock(&(ipi)->ipi_lock)
392 #define INP_INFO_TRY_WLOCK(ipi) rw_try_wlock(&(ipi)->ipi_lock)
393 #define INP_INFO_RUNLOCK(ipi) rw_runlock(&(ipi)->ipi_lock)
394 #define INP_INFO_WUNLOCK(ipi) rw_wunlock(&(ipi)->ipi_lock)
395 #define INP_INFO_LOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_LOCKED)
396 #define INP_INFO_RLOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_RLOCKED)
397 #define INP_INFO_WLOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_WLOCKED)
398 #define INP_INFO_UNLOCK_ASSERT(ipi) rw_assert(&(ipi)->ipi_lock, RA_UNLOCKED)
399
400 #define INP_PCBHASH(faddr, lport, fport, mask) \
401 (((faddr) ^ ((faddr) >> 16) ^ ntohs((lport) ^ (fport))) & (mask))
402 #define INP_PCBPORTHASH(lport, mask) \
403 (ntohs((lport)) & (mask))
404
405 /*
406 * Flags for inp_vflags -- historically version flags only, but now quite a
407 * bit more due to an overflow of inp_flag, leading to some locking ambiguity
408 * as some bits are stable from initial allocation, and others may change.
409 */
410 #define INP_IPV4 0x1
411 #define INP_IPV6 0x2
412 #define INP_IPV6PROTO 0x4 /* opened under IPv6 protocol */
413 #define INP_TIMEWAIT 0x8 /* inpcb in TIMEWAIT, ppcb is tcptw */
414 #define INP_ONESBCAST 0x10 /* send all-ones broadcast */
415 #define INP_DROPPED 0x20 /* protocol drop flag */
416 #define INP_SOCKREF 0x40 /* strong socket reference */
417
418 /*
419 * Flags for inp_flag.
420 */
421 #define INP_RECVOPTS 0x01 /* receive incoming IP options */
422 #define INP_RECVRETOPTS 0x02 /* receive IP options for reply */
423 #define INP_RECVDSTADDR 0x04 /* receive IP dst address */
424 #define INP_HDRINCL 0x08 /* user supplies entire IP header */
425 #define INP_HIGHPORT 0x10 /* user wants "high" port binding */
426 #define INP_LOWPORT 0x20 /* user wants "low" port binding */
427 #define INP_ANONPORT 0x40 /* port chosen for user */
428 #define INP_RECVIF 0x80 /* receive incoming interface */
429 #define INP_MTUDISC 0x100 /* user can do MTU discovery */
430 #define INP_FAITH 0x200 /* accept FAITH'ed connections */
431 #define INP_RECVTTL 0x400 /* receive incoming IP TTL */
432 #define INP_DONTFRAG 0x800 /* don't fragment packet */
433
434 #define IN6P_IPV6_V6ONLY 0x008000 /* restrict AF_INET6 socket for v6 */
435
436 #define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */
437 #define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */
438 #define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */
439 #define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */
440 #define IN6P_RTHDR 0x100000 /* receive routing header */
441 #define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */
442 #define IN6P_TCLASS 0x400000 /* receive traffic class value */
443 #define IN6P_AUTOFLOWLABEL 0x800000 /* attach flowlabel automatically */
444 #define IN6P_RFC2292 0x40000000 /* used RFC2292 API on the socket */
445 #define IN6P_MTU 0x80000000 /* receive path MTU */
446
447 #define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
448 INP_RECVIF|INP_RECVTTL|\
449 IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
450 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
451 IN6P_TCLASS|IN6P_AUTOFLOWLABEL|IN6P_RFC2292|\
452 IN6P_MTU)
453 #define INP_UNMAPPABLEOPTS (IN6P_HOPOPTS|IN6P_DSTOPTS|IN6P_RTHDR|\
454 IN6P_TCLASS|IN6P_AUTOFLOWLABEL)
455
456 /* for KAME src sync over BSD*'s */
457 #define IN6P_HIGHPORT INP_HIGHPORT
458 #define IN6P_LOWPORT INP_LOWPORT
459 #define IN6P_ANONPORT INP_ANONPORT
460 #define IN6P_RECVIF INP_RECVIF
461 #define IN6P_MTUDISC INP_MTUDISC
462 #define IN6P_FAITH INP_FAITH
463 #define IN6P_CONTROLOPTS INP_CONTROLOPTS
464 /*
465 * socket AF version is {newer than,or include}
466 * actual datagram AF version
467 */
468
469 #define INPLOOKUP_WILDCARD 1
470 #define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
471 #define sotoin6pcb(so) sotoinpcb(so) /* for KAME src sync over BSD*'s */
472
473 #define INP_SOCKAF(so) so->so_proto->pr_domain->dom_family
474
475 #define INP_CHECK_SOCKAF(so, af) (INP_SOCKAF(so) == af)
476
477 #ifdef _KERNEL
478 extern int ipport_reservedhigh;
479 extern int ipport_reservedlow;
480 extern int ipport_lowfirstauto;
481 extern int ipport_lowlastauto;
482 extern int ipport_firstauto;
483 extern int ipport_lastauto;
484 extern int ipport_hifirstauto;
485 extern int ipport_hilastauto;
486 extern struct callout ipport_tick_callout;
487
488 void in_pcbpurgeif0(struct inpcbinfo *, struct ifnet *);
489 int in_pcballoc(struct socket *, struct inpcbinfo *);
490 int in_pcbbind(struct inpcb *, struct sockaddr *, struct ucred *);
491 int in_pcbbind_setup(struct inpcb *, struct sockaddr *, in_addr_t *,
492 u_short *, struct ucred *);
493 int in_pcbconnect(struct inpcb *, struct sockaddr *, struct ucred *);
494 int in_pcbconnect_setup(struct inpcb *, struct sockaddr *, in_addr_t *,
495 u_short *, in_addr_t *, u_short *, struct inpcb **,
496 struct ucred *);
497 void in_pcbdetach(struct inpcb *);
498 void in_pcbdisconnect(struct inpcb *);
499 void in_pcbdrop(struct inpcb *);
500 void in_pcbfree(struct inpcb *);
501 int in_pcbinshash(struct inpcb *);
502 struct inpcb *
503 in_pcblookup_local(struct inpcbinfo *,
504 struct in_addr, u_short, int, struct ucred *);
505 struct inpcb *
506 in_pcblookup_hash(struct inpcbinfo *, struct in_addr, u_int,
507 struct in_addr, u_int, int, struct ifnet *);
508 void in_pcbnotifyall(struct inpcbinfo *pcbinfo, struct in_addr,
509 int, struct inpcb *(*)(struct inpcb *, int));
510 void in_pcbrehash(struct inpcb *);
511 void in_pcbsetsolabel(struct socket *so);
512 int in_getpeeraddr(struct socket *so, struct sockaddr **nam);
513 int in_getsockaddr(struct socket *so, struct sockaddr **nam);
514 struct sockaddr *
515 in_sockaddr(in_port_t port, struct in_addr *addr);
516 void in_pcbsosetlabel(struct socket *so);
517 void in_pcbremlists(struct inpcb *inp);
518 void ipport_tick(void *xtp);
519
520 /*
521 * Debugging routines compiled in when DDB is present.
522 */
523 void db_print_inpcb(struct inpcb *inp, const char *name, int indent);
524
525 #endif /* _KERNEL */
526
527 #endif /* !_NETINET_IN_PCB_H_ */
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