2 * Copyright (c) 1982, 1986, 1991, 1993, 1995
3 * The Regents of the University of California.
4 * Copyright (c) 2007-2009 Robert N. M. Watson
5 * Copyright (c) 2010-2011 Juniper Networks, Inc.
8 * Portions of this software were developed by Robert N. M. Watson under
9 * contract to Juniper Networks, Inc.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 4. Neither the name of the University nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * @(#)in_pcb.c 8.4 (Berkeley) 5/24/95
38 #include <sys/cdefs.h>
39 __FBSDID("$FreeBSD$");
42 #include "opt_ipsec.h"
44 #include "opt_inet6.h"
45 #include "opt_pcbgroup.h"
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/malloc.h>
51 #include <sys/callout.h>
52 #include <sys/domain.h>
53 #include <sys/protosw.h>
54 #include <sys/socket.h>
55 #include <sys/socketvar.h>
58 #include <sys/refcount.h>
60 #include <sys/kernel.h>
61 #include <sys/sysctl.h>
70 #include <net/if_var.h>
71 #include <net/if_types.h>
72 #include <net/route.h>
75 #if defined(INET) || defined(INET6)
76 #include <netinet/in.h>
77 #include <netinet/in_pcb.h>
78 #include <netinet/ip_var.h>
79 #include <netinet/tcp_var.h>
80 #include <netinet/udp.h>
81 #include <netinet/udp_var.h>
84 #include <netinet/in_var.h>
87 #include <netinet/ip6.h>
88 #include <netinet6/in6_pcb.h>
89 #include <netinet6/in6_var.h>
90 #include <netinet6/ip6_var.h>
95 #include <netipsec/ipsec.h>
96 #include <netipsec/key.h>
99 #include <security/mac/mac_framework.h>
101 static struct callout ipport_tick_callout;
104 * These configure the range of local port addresses assigned to
105 * "unspecified" outgoing connections/packets/whatever.
107 VNET_DEFINE(int, ipport_lowfirstauto) = IPPORT_RESERVED - 1; /* 1023 */
108 VNET_DEFINE(int, ipport_lowlastauto) = IPPORT_RESERVEDSTART; /* 600 */
109 VNET_DEFINE(int, ipport_firstauto) = IPPORT_EPHEMERALFIRST; /* 10000 */
110 VNET_DEFINE(int, ipport_lastauto) = IPPORT_EPHEMERALLAST; /* 65535 */
111 VNET_DEFINE(int, ipport_hifirstauto) = IPPORT_HIFIRSTAUTO; /* 49152 */
112 VNET_DEFINE(int, ipport_hilastauto) = IPPORT_HILASTAUTO; /* 65535 */
115 * Reserved ports accessible only to root. There are significant
116 * security considerations that must be accounted for when changing these,
117 * but the security benefits can be great. Please be careful.
119 VNET_DEFINE(int, ipport_reservedhigh) = IPPORT_RESERVED - 1; /* 1023 */
120 VNET_DEFINE(int, ipport_reservedlow);
122 /* Variables dealing with random ephemeral port allocation. */
123 VNET_DEFINE(int, ipport_randomized) = 1; /* user controlled via sysctl */
124 VNET_DEFINE(int, ipport_randomcps) = 10; /* user controlled via sysctl */
125 VNET_DEFINE(int, ipport_randomtime) = 45; /* user controlled via sysctl */
126 VNET_DEFINE(int, ipport_stoprandom); /* toggled by ipport_tick */
127 VNET_DEFINE(int, ipport_tcpallocs);
128 static VNET_DEFINE(int, ipport_tcplastcount);
130 #define V_ipport_tcplastcount VNET(ipport_tcplastcount)
132 static void in_pcbremlists(struct inpcb *inp);
134 static struct inpcb *in_pcblookup_hash_locked(struct inpcbinfo *pcbinfo,
135 struct in_addr faddr, u_int fport_arg,
136 struct in_addr laddr, u_int lport_arg,
137 int lookupflags, struct ifnet *ifp);
139 #define RANGECHK(var, min, max) \
140 if ((var) < (min)) { (var) = (min); } \
141 else if ((var) > (max)) { (var) = (max); }
144 sysctl_net_ipport_check(SYSCTL_HANDLER_ARGS)
149 error = vnet_sysctl_handle_int(oidp, arg1, arg2, req);
151 error = sysctl_handle_int(oidp, arg1, arg2, req);
154 RANGECHK(V_ipport_lowfirstauto, 1, IPPORT_RESERVED - 1);
155 RANGECHK(V_ipport_lowlastauto, 1, IPPORT_RESERVED - 1);
156 RANGECHK(V_ipport_firstauto, IPPORT_RESERVED, IPPORT_MAX);
157 RANGECHK(V_ipport_lastauto, IPPORT_RESERVED, IPPORT_MAX);
158 RANGECHK(V_ipport_hifirstauto, IPPORT_RESERVED, IPPORT_MAX);
159 RANGECHK(V_ipport_hilastauto, IPPORT_RESERVED, IPPORT_MAX);
166 static SYSCTL_NODE(_net_inet_ip, IPPROTO_IP, portrange, CTLFLAG_RW, 0,
169 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, lowfirst,
170 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_lowfirstauto), 0,
171 &sysctl_net_ipport_check, "I", "");
172 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, lowlast,
173 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_lowlastauto), 0,
174 &sysctl_net_ipport_check, "I", "");
175 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, first,
176 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_firstauto), 0,
177 &sysctl_net_ipport_check, "I", "");
178 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, last,
179 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_lastauto), 0,
180 &sysctl_net_ipport_check, "I", "");
181 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, hifirst,
182 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_hifirstauto), 0,
183 &sysctl_net_ipport_check, "I", "");
184 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, hilast,
185 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_hilastauto), 0,
186 &sysctl_net_ipport_check, "I", "");
187 SYSCTL_VNET_INT(_net_inet_ip_portrange, OID_AUTO, reservedhigh,
188 CTLFLAG_RW|CTLFLAG_SECURE, &VNET_NAME(ipport_reservedhigh), 0, "");
189 SYSCTL_VNET_INT(_net_inet_ip_portrange, OID_AUTO, reservedlow,
190 CTLFLAG_RW|CTLFLAG_SECURE, &VNET_NAME(ipport_reservedlow), 0, "");
191 SYSCTL_VNET_INT(_net_inet_ip_portrange, OID_AUTO, randomized, CTLFLAG_RW,
192 &VNET_NAME(ipport_randomized), 0, "Enable random port allocation");
193 SYSCTL_VNET_INT(_net_inet_ip_portrange, OID_AUTO, randomcps, CTLFLAG_RW,
194 &VNET_NAME(ipport_randomcps), 0, "Maximum number of random port "
195 "allocations before switching to a sequental one");
196 SYSCTL_VNET_INT(_net_inet_ip_portrange, OID_AUTO, randomtime, CTLFLAG_RW,
197 &VNET_NAME(ipport_randomtime), 0,
198 "Minimum time to keep sequental port "
199 "allocation before switching to a random one");
203 * in_pcb.c: manage the Protocol Control Blocks.
205 * NOTE: It is assumed that most of these functions will be called with
206 * the pcbinfo lock held, and often, the inpcb lock held, as these utility
207 * functions often modify hash chains or addresses in pcbs.
211 * Initialize an inpcbinfo -- we should be able to reduce the number of
215 in_pcbinfo_init(struct inpcbinfo *pcbinfo, const char *name,
216 struct inpcbhead *listhead, int hash_nelements, int porthash_nelements,
217 char *inpcbzone_name, uma_init inpcbzone_init, uma_fini inpcbzone_fini,
218 uint32_t inpcbzone_flags, u_int hashfields)
221 INP_INFO_LOCK_INIT(pcbinfo, name);
222 INP_HASH_LOCK_INIT(pcbinfo, "pcbinfohash"); /* XXXRW: argument? */
224 pcbinfo->ipi_vnet = curvnet;
226 pcbinfo->ipi_listhead = listhead;
227 LIST_INIT(pcbinfo->ipi_listhead);
228 pcbinfo->ipi_count = 0;
229 pcbinfo->ipi_hashbase = hashinit(hash_nelements, M_PCB,
230 &pcbinfo->ipi_hashmask);
231 pcbinfo->ipi_porthashbase = hashinit(porthash_nelements, M_PCB,
232 &pcbinfo->ipi_porthashmask);
234 in_pcbgroup_init(pcbinfo, hashfields, hash_nelements);
236 pcbinfo->ipi_zone = uma_zcreate(inpcbzone_name, sizeof(struct inpcb),
237 NULL, NULL, inpcbzone_init, inpcbzone_fini, UMA_ALIGN_PTR,
239 uma_zone_set_max(pcbinfo->ipi_zone, maxsockets);
240 uma_zone_set_warning(pcbinfo->ipi_zone,
241 "kern.ipc.maxsockets limit reached");
245 * Destroy an inpcbinfo.
248 in_pcbinfo_destroy(struct inpcbinfo *pcbinfo)
251 KASSERT(pcbinfo->ipi_count == 0,
252 ("%s: ipi_count = %u", __func__, pcbinfo->ipi_count));
254 hashdestroy(pcbinfo->ipi_hashbase, M_PCB, pcbinfo->ipi_hashmask);
255 hashdestroy(pcbinfo->ipi_porthashbase, M_PCB,
256 pcbinfo->ipi_porthashmask);
258 in_pcbgroup_destroy(pcbinfo);
260 uma_zdestroy(pcbinfo->ipi_zone);
261 INP_HASH_LOCK_DESTROY(pcbinfo);
262 INP_INFO_LOCK_DESTROY(pcbinfo);
266 * Allocate a PCB and associate it with the socket.
267 * On success return with the PCB locked.
270 in_pcballoc(struct socket *so, struct inpcbinfo *pcbinfo)
275 INP_INFO_WLOCK_ASSERT(pcbinfo);
277 inp = uma_zalloc(pcbinfo->ipi_zone, M_NOWAIT);
280 bzero(inp, inp_zero_size);
281 inp->inp_pcbinfo = pcbinfo;
282 inp->inp_socket = so;
283 inp->inp_cred = crhold(so->so_cred);
284 inp->inp_inc.inc_fibnum = so->so_fibnum;
286 error = mac_inpcb_init(inp, M_NOWAIT);
289 mac_inpcb_create(so, inp);
292 error = ipsec_init_policy(so, &inp->inp_sp);
295 mac_inpcb_destroy(inp);
301 if (INP_SOCKAF(so) == AF_INET6) {
302 inp->inp_vflag |= INP_IPV6PROTO;
304 inp->inp_flags |= IN6P_IPV6_V6ONLY;
307 LIST_INSERT_HEAD(pcbinfo->ipi_listhead, inp, inp_list);
308 pcbinfo->ipi_count++;
309 so->so_pcb = (caddr_t)inp;
311 if (V_ip6_auto_flowlabel)
312 inp->inp_flags |= IN6P_AUTOFLOWLABEL;
315 inp->inp_gencnt = ++pcbinfo->ipi_gencnt;
316 refcount_init(&inp->inp_refcount, 1); /* Reference from inpcbinfo */
317 #if defined(IPSEC) || defined(MAC)
320 crfree(inp->inp_cred);
321 uma_zfree(pcbinfo->ipi_zone, inp);
329 in_pcbbind(struct inpcb *inp, struct sockaddr *nam, struct ucred *cred)
333 INP_WLOCK_ASSERT(inp);
334 INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo);
336 if (inp->inp_lport != 0 || inp->inp_laddr.s_addr != INADDR_ANY)
338 anonport = nam == NULL || ((struct sockaddr_in *)nam)->sin_port == 0;
339 error = in_pcbbind_setup(inp, nam, &inp->inp_laddr.s_addr,
340 &inp->inp_lport, cred);
343 if (in_pcbinshash(inp) != 0) {
344 inp->inp_laddr.s_addr = INADDR_ANY;
349 inp->inp_flags |= INP_ANONPORT;
354 #if defined(INET) || defined(INET6)
356 in_pcb_lport(struct inpcb *inp, struct in_addr *laddrp, u_short *lportp,
357 struct ucred *cred, int lookupflags)
359 struct inpcbinfo *pcbinfo;
360 struct inpcb *tmpinp;
361 unsigned short *lastport;
362 int count, dorandom, error;
363 u_short aux, first, last, lport;
365 struct in_addr laddr;
368 pcbinfo = inp->inp_pcbinfo;
371 * Because no actual state changes occur here, a global write lock on
372 * the pcbinfo isn't required.
374 INP_LOCK_ASSERT(inp);
375 INP_HASH_LOCK_ASSERT(pcbinfo);
377 if (inp->inp_flags & INP_HIGHPORT) {
378 first = V_ipport_hifirstauto; /* sysctl */
379 last = V_ipport_hilastauto;
380 lastport = &pcbinfo->ipi_lasthi;
381 } else if (inp->inp_flags & INP_LOWPORT) {
382 error = priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT, 0);
385 first = V_ipport_lowfirstauto; /* 1023 */
386 last = V_ipport_lowlastauto; /* 600 */
387 lastport = &pcbinfo->ipi_lastlow;
389 first = V_ipport_firstauto; /* sysctl */
390 last = V_ipport_lastauto;
391 lastport = &pcbinfo->ipi_lastport;
394 * For UDP, use random port allocation as long as the user
395 * allows it. For TCP (and as of yet unknown) connections,
396 * use random port allocation only if the user allows it AND
397 * ipport_tick() allows it.
399 if (V_ipport_randomized &&
400 (!V_ipport_stoprandom || pcbinfo == &V_udbinfo))
405 * It makes no sense to do random port allocation if
406 * we have the only port available.
410 /* Make sure to not include UDP packets in the count. */
411 if (pcbinfo != &V_udbinfo)
412 V_ipport_tcpallocs++;
414 * Instead of having two loops further down counting up or down
415 * make sure that first is always <= last and go with only one
416 * code path implementing all logic.
425 /* Make the compiler happy. */
427 if ((inp->inp_vflag & (INP_IPV4|INP_IPV6)) == INP_IPV4) {
428 KASSERT(laddrp != NULL, ("%s: laddrp NULL for v4 inp %p",
433 tmpinp = NULL; /* Make compiler happy. */
437 *lastport = first + (arc4random() % (last - first));
439 count = last - first;
442 if (count-- < 0) /* completely used? */
443 return (EADDRNOTAVAIL);
445 if (*lastport < first || *lastport > last)
447 lport = htons(*lastport);
450 if ((inp->inp_vflag & INP_IPV6) != 0)
451 tmpinp = in6_pcblookup_local(pcbinfo,
452 &inp->in6p_laddr, lport, lookupflags, cred);
454 #if defined(INET) && defined(INET6)
458 tmpinp = in_pcblookup_local(pcbinfo, laddr,
459 lport, lookupflags, cred);
461 } while (tmpinp != NULL);
464 if ((inp->inp_vflag & (INP_IPV4|INP_IPV6)) == INP_IPV4)
465 laddrp->s_addr = laddr.s_addr;
473 * Return cached socket options.
476 inp_so_options(const struct inpcb *inp)
482 if ((inp->inp_flags2 & INP_REUSEPORT) != 0)
483 so_options |= SO_REUSEPORT;
484 if ((inp->inp_flags2 & INP_REUSEADDR) != 0)
485 so_options |= SO_REUSEADDR;
488 #endif /* INET || INET6 */
492 * Set up a bind operation on a PCB, performing port allocation
493 * as required, but do not actually modify the PCB. Callers can
494 * either complete the bind by setting inp_laddr/inp_lport and
495 * calling in_pcbinshash(), or they can just use the resulting
496 * port and address to authorise the sending of a once-off packet.
498 * On error, the values of *laddrp and *lportp are not changed.
501 in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
502 u_short *lportp, struct ucred *cred)
504 struct socket *so = inp->inp_socket;
505 struct sockaddr_in *sin;
506 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
507 struct in_addr laddr;
509 int lookupflags = 0, reuseport = (so->so_options & SO_REUSEPORT);
513 * No state changes, so read locks are sufficient here.
515 INP_LOCK_ASSERT(inp);
516 INP_HASH_LOCK_ASSERT(pcbinfo);
518 if (TAILQ_EMPTY(&V_in_ifaddrhead)) /* XXX broken! */
519 return (EADDRNOTAVAIL);
520 laddr.s_addr = *laddrp;
521 if (nam != NULL && laddr.s_addr != INADDR_ANY)
523 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
524 lookupflags = INPLOOKUP_WILDCARD;
526 if ((error = prison_local_ip4(cred, &laddr)) != 0)
529 sin = (struct sockaddr_in *)nam;
530 if (nam->sa_len != sizeof (*sin))
534 * We should check the family, but old programs
535 * incorrectly fail to initialize it.
537 if (sin->sin_family != AF_INET)
538 return (EAFNOSUPPORT);
540 error = prison_local_ip4(cred, &sin->sin_addr);
543 if (sin->sin_port != *lportp) {
544 /* Don't allow the port to change. */
547 lport = sin->sin_port;
549 /* NB: lport is left as 0 if the port isn't being changed. */
550 if (IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
552 * Treat SO_REUSEADDR as SO_REUSEPORT for multicast;
553 * allow complete duplication of binding if
554 * SO_REUSEPORT is set, or if SO_REUSEADDR is set
555 * and a multicast address is bound on both
556 * new and duplicated sockets.
558 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) != 0)
559 reuseport = SO_REUSEADDR|SO_REUSEPORT;
560 } else if (sin->sin_addr.s_addr != INADDR_ANY) {
561 sin->sin_port = 0; /* yech... */
562 bzero(&sin->sin_zero, sizeof(sin->sin_zero));
564 * Is the address a local IP address?
565 * If INP_BINDANY is set, then the socket may be bound
566 * to any endpoint address, local or not.
568 if ((inp->inp_flags & INP_BINDANY) == 0 &&
569 ifa_ifwithaddr_check((struct sockaddr *)sin) == 0)
570 return (EADDRNOTAVAIL);
572 laddr = sin->sin_addr;
578 if (ntohs(lport) <= V_ipport_reservedhigh &&
579 ntohs(lport) >= V_ipport_reservedlow &&
580 priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT,
583 if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)) &&
584 priv_check_cred(inp->inp_cred,
585 PRIV_NETINET_REUSEPORT, 0) != 0) {
586 t = in_pcblookup_local(pcbinfo, sin->sin_addr,
587 lport, INPLOOKUP_WILDCARD, cred);
590 * This entire block sorely needs a rewrite.
593 ((t->inp_flags & INP_TIMEWAIT) == 0) &&
594 (so->so_type != SOCK_STREAM ||
595 ntohl(t->inp_faddr.s_addr) == INADDR_ANY) &&
596 (ntohl(sin->sin_addr.s_addr) != INADDR_ANY ||
597 ntohl(t->inp_laddr.s_addr) != INADDR_ANY ||
598 (t->inp_flags2 & INP_REUSEPORT) == 0) &&
599 (inp->inp_cred->cr_uid !=
600 t->inp_cred->cr_uid))
603 t = in_pcblookup_local(pcbinfo, sin->sin_addr,
604 lport, lookupflags, cred);
605 if (t && (t->inp_flags & INP_TIMEWAIT)) {
607 * XXXRW: If an incpb has had its timewait
608 * state recycled, we treat the address as
609 * being in use (for now). This is better
610 * than a panic, but not desirable.
614 (reuseport & tw->tw_so_options) == 0)
616 } else if (t && (reuseport & inp_so_options(t)) == 0) {
618 if (ntohl(sin->sin_addr.s_addr) !=
620 ntohl(t->inp_laddr.s_addr) !=
622 (inp->inp_vflag & INP_IPV6PROTO) == 0 ||
623 (t->inp_vflag & INP_IPV6PROTO) == 0)
632 error = in_pcb_lport(inp, &laddr, &lport, cred, lookupflags);
637 *laddrp = laddr.s_addr;
643 * Connect from a socket to a specified address.
644 * Both address and port must be specified in argument sin.
645 * If don't have a local address for this socket yet,
649 in_pcbconnect_mbuf(struct inpcb *inp, struct sockaddr *nam,
650 struct ucred *cred, struct mbuf *m)
652 u_short lport, fport;
653 in_addr_t laddr, faddr;
656 INP_WLOCK_ASSERT(inp);
657 INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo);
659 lport = inp->inp_lport;
660 laddr = inp->inp_laddr.s_addr;
661 anonport = (lport == 0);
662 error = in_pcbconnect_setup(inp, nam, &laddr, &lport, &faddr, &fport,
667 /* Do the initial binding of the local address if required. */
668 if (inp->inp_laddr.s_addr == INADDR_ANY && inp->inp_lport == 0) {
669 inp->inp_lport = lport;
670 inp->inp_laddr.s_addr = laddr;
671 if (in_pcbinshash(inp) != 0) {
672 inp->inp_laddr.s_addr = INADDR_ANY;
678 /* Commit the remaining changes. */
679 inp->inp_lport = lport;
680 inp->inp_laddr.s_addr = laddr;
681 inp->inp_faddr.s_addr = faddr;
682 inp->inp_fport = fport;
683 in_pcbrehash_mbuf(inp, m);
686 inp->inp_flags |= INP_ANONPORT;
691 in_pcbconnect(struct inpcb *inp, struct sockaddr *nam, struct ucred *cred)
694 return (in_pcbconnect_mbuf(inp, nam, cred, NULL));
698 * Do proper source address selection on an unbound socket in case
699 * of connect. Take jails into account as well.
702 in_pcbladdr(struct inpcb *inp, struct in_addr *faddr, struct in_addr *laddr,
707 struct sockaddr_in *sin;
711 KASSERT(laddr != NULL, ("%s: laddr NULL", __func__));
714 * Bypass source address selection and use the primary jail IP
717 if (cred != NULL && !prison_saddrsel_ip4(cred, laddr))
721 bzero(&sro, sizeof(sro));
723 sin = (struct sockaddr_in *)&sro.ro_dst;
724 sin->sin_family = AF_INET;
725 sin->sin_len = sizeof(struct sockaddr_in);
726 sin->sin_addr.s_addr = faddr->s_addr;
729 * If route is known our src addr is taken from the i/f,
732 * Find out route to destination.
734 if ((inp->inp_socket->so_options & SO_DONTROUTE) == 0)
735 in_rtalloc_ign(&sro, 0, inp->inp_inc.inc_fibnum);
738 * If we found a route, use the address corresponding to
739 * the outgoing interface.
741 * Otherwise assume faddr is reachable on a directly connected
742 * network and try to find a corresponding interface to take
743 * the source address from.
745 if (sro.ro_rt == NULL || sro.ro_rt->rt_ifp == NULL) {
746 struct in_ifaddr *ia;
749 ia = ifatoia(ifa_ifwithdstaddr((struct sockaddr *)sin));
751 ia = ifatoia(ifa_ifwithnet((struct sockaddr *)sin, 0));
757 if (cred == NULL || !prison_flag(cred, PR_IP4)) {
758 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
759 ifa_free(&ia->ia_ifa);
764 ifa_free(&ia->ia_ifa);
767 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
770 if (sa->sa_family != AF_INET)
772 sin = (struct sockaddr_in *)sa;
773 if (prison_check_ip4(cred, &sin->sin_addr) == 0) {
774 ia = (struct in_ifaddr *)ifa;
779 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
780 IF_ADDR_RUNLOCK(ifp);
783 IF_ADDR_RUNLOCK(ifp);
785 /* 3. As a last resort return the 'default' jail address. */
786 error = prison_get_ip4(cred, laddr);
791 * If the outgoing interface on the route found is not
792 * a loopback interface, use the address from that interface.
793 * In case of jails do those three steps:
794 * 1. check if the interface address belongs to the jail. If so use it.
795 * 2. check if we have any address on the outgoing interface
796 * belonging to this jail. If so use it.
797 * 3. as a last resort return the 'default' jail address.
799 if ((sro.ro_rt->rt_ifp->if_flags & IFF_LOOPBACK) == 0) {
800 struct in_ifaddr *ia;
803 /* If not jailed, use the default returned. */
804 if (cred == NULL || !prison_flag(cred, PR_IP4)) {
805 ia = (struct in_ifaddr *)sro.ro_rt->rt_ifa;
806 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
811 /* 1. Check if the iface address belongs to the jail. */
812 sin = (struct sockaddr_in *)sro.ro_rt->rt_ifa->ifa_addr;
813 if (prison_check_ip4(cred, &sin->sin_addr) == 0) {
814 ia = (struct in_ifaddr *)sro.ro_rt->rt_ifa;
815 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
820 * 2. Check if we have any address on the outgoing interface
821 * belonging to this jail.
824 ifp = sro.ro_rt->rt_ifp;
826 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
828 if (sa->sa_family != AF_INET)
830 sin = (struct sockaddr_in *)sa;
831 if (prison_check_ip4(cred, &sin->sin_addr) == 0) {
832 ia = (struct in_ifaddr *)ifa;
837 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
838 IF_ADDR_RUNLOCK(ifp);
841 IF_ADDR_RUNLOCK(ifp);
843 /* 3. As a last resort return the 'default' jail address. */
844 error = prison_get_ip4(cred, laddr);
849 * The outgoing interface is marked with 'loopback net', so a route
850 * to ourselves is here.
851 * Try to find the interface of the destination address and then
852 * take the address from there. That interface is not necessarily
853 * a loopback interface.
854 * In case of jails, check that it is an address of the jail
855 * and if we cannot find, fall back to the 'default' jail address.
857 if ((sro.ro_rt->rt_ifp->if_flags & IFF_LOOPBACK) != 0) {
858 struct sockaddr_in sain;
859 struct in_ifaddr *ia;
861 bzero(&sain, sizeof(struct sockaddr_in));
862 sain.sin_family = AF_INET;
863 sain.sin_len = sizeof(struct sockaddr_in);
864 sain.sin_addr.s_addr = faddr->s_addr;
866 ia = ifatoia(ifa_ifwithdstaddr(sintosa(&sain)));
868 ia = ifatoia(ifa_ifwithnet(sintosa(&sain), 0));
870 ia = ifatoia(ifa_ifwithaddr(sintosa(&sain)));
872 if (cred == NULL || !prison_flag(cred, PR_IP4)) {
877 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
878 ifa_free(&ia->ia_ifa);
887 ifa_free(&ia->ia_ifa);
890 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
893 if (sa->sa_family != AF_INET)
895 sin = (struct sockaddr_in *)sa;
896 if (prison_check_ip4(cred,
897 &sin->sin_addr) == 0) {
898 ia = (struct in_ifaddr *)ifa;
903 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
904 IF_ADDR_RUNLOCK(ifp);
907 IF_ADDR_RUNLOCK(ifp);
910 /* 3. As a last resort return the 'default' jail address. */
911 error = prison_get_ip4(cred, laddr);
916 if (sro.ro_rt != NULL)
922 * Set up for a connect from a socket to the specified address.
923 * On entry, *laddrp and *lportp should contain the current local
924 * address and port for the PCB; these are updated to the values
925 * that should be placed in inp_laddr and inp_lport to complete
928 * On success, *faddrp and *fportp will be set to the remote address
929 * and port. These are not updated in the error case.
931 * If the operation fails because the connection already exists,
932 * *oinpp will be set to the PCB of that connection so that the
933 * caller can decide to override it. In all other cases, *oinpp
937 in_pcbconnect_setup(struct inpcb *inp, struct sockaddr *nam,
938 in_addr_t *laddrp, u_short *lportp, in_addr_t *faddrp, u_short *fportp,
939 struct inpcb **oinpp, struct ucred *cred)
941 struct sockaddr_in *sin = (struct sockaddr_in *)nam;
942 struct in_ifaddr *ia;
944 struct in_addr laddr, faddr;
945 u_short lport, fport;
949 * Because a global state change doesn't actually occur here, a read
950 * lock is sufficient.
952 INP_LOCK_ASSERT(inp);
953 INP_HASH_LOCK_ASSERT(inp->inp_pcbinfo);
957 if (nam->sa_len != sizeof (*sin))
959 if (sin->sin_family != AF_INET)
960 return (EAFNOSUPPORT);
961 if (sin->sin_port == 0)
962 return (EADDRNOTAVAIL);
963 laddr.s_addr = *laddrp;
965 faddr = sin->sin_addr;
966 fport = sin->sin_port;
968 if (!TAILQ_EMPTY(&V_in_ifaddrhead)) {
970 * If the destination address is INADDR_ANY,
971 * use the primary local address.
972 * If the supplied address is INADDR_BROADCAST,
973 * and the primary interface supports broadcast,
974 * choose the broadcast address for that interface.
976 if (faddr.s_addr == INADDR_ANY) {
979 IA_SIN(TAILQ_FIRST(&V_in_ifaddrhead))->sin_addr;
982 (error = prison_get_ip4(cred, &faddr)) != 0)
984 } else if (faddr.s_addr == (u_long)INADDR_BROADCAST) {
986 if (TAILQ_FIRST(&V_in_ifaddrhead)->ia_ifp->if_flags &
988 faddr = satosin(&TAILQ_FIRST(
989 &V_in_ifaddrhead)->ia_broadaddr)->sin_addr;
993 if (laddr.s_addr == INADDR_ANY) {
994 error = in_pcbladdr(inp, &faddr, &laddr, cred);
996 * If the destination address is multicast and an outgoing
997 * interface has been set as a multicast option, prefer the
998 * address of that interface as our source address.
1000 if (IN_MULTICAST(ntohl(faddr.s_addr)) &&
1001 inp->inp_moptions != NULL) {
1002 struct ip_moptions *imo;
1005 imo = inp->inp_moptions;
1006 if (imo->imo_multicast_ifp != NULL) {
1007 ifp = imo->imo_multicast_ifp;
1009 TAILQ_FOREACH(ia, &V_in_ifaddrhead, ia_link) {
1010 if ((ia->ia_ifp == ifp) &&
1012 prison_check_ip4(cred,
1013 &ia->ia_addr.sin_addr) == 0))
1017 error = EADDRNOTAVAIL;
1019 laddr = ia->ia_addr.sin_addr;
1022 IN_IFADDR_RUNLOCK();
1028 oinp = in_pcblookup_hash_locked(inp->inp_pcbinfo, faddr, fport,
1029 laddr, lport, 0, NULL);
1033 return (EADDRINUSE);
1036 error = in_pcbbind_setup(inp, NULL, &laddr.s_addr, &lport,
1041 *laddrp = laddr.s_addr;
1043 *faddrp = faddr.s_addr;
1049 in_pcbdisconnect(struct inpcb *inp)
1052 INP_WLOCK_ASSERT(inp);
1053 INP_HASH_WLOCK_ASSERT(inp->inp_pcbinfo);
1055 inp->inp_faddr.s_addr = INADDR_ANY;
1062 * in_pcbdetach() is responsibe for disassociating a socket from an inpcb.
1063 * For most protocols, this will be invoked immediately prior to calling
1064 * in_pcbfree(). However, with TCP the inpcb may significantly outlive the
1065 * socket, in which case in_pcbfree() is deferred.
1068 in_pcbdetach(struct inpcb *inp)
1071 KASSERT(inp->inp_socket != NULL, ("%s: inp_socket == NULL", __func__));
1073 inp->inp_socket->so_pcb = NULL;
1074 inp->inp_socket = NULL;
1078 * in_pcbref() bumps the reference count on an inpcb in order to maintain
1079 * stability of an inpcb pointer despite the inpcb lock being released. This
1080 * is used in TCP when the inpcbinfo lock needs to be acquired or upgraded,
1081 * but where the inpcb lock may already held, or when acquiring a reference
1084 * in_pcbref() should be used only to provide brief memory stability, and
1085 * must always be followed by a call to INP_WLOCK() and in_pcbrele() to
1086 * garbage collect the inpcb if it has been in_pcbfree()'d from another
1087 * context. Until in_pcbrele() has returned that the inpcb is still valid,
1088 * lock and rele are the *only* safe operations that may be performed on the
1091 * While the inpcb will not be freed, releasing the inpcb lock means that the
1092 * connection's state may change, so the caller should be careful to
1093 * revalidate any cached state on reacquiring the lock. Drop the reference
1094 * using in_pcbrele().
1097 in_pcbref(struct inpcb *inp)
1100 KASSERT(inp->inp_refcount > 0, ("%s: refcount 0", __func__));
1102 refcount_acquire(&inp->inp_refcount);
1106 * Drop a refcount on an inpcb elevated using in_pcbref(); because a call to
1107 * in_pcbfree() may have been made between in_pcbref() and in_pcbrele(), we
1108 * return a flag indicating whether or not the inpcb remains valid. If it is
1109 * valid, we return with the inpcb lock held.
1111 * Notice that, unlike in_pcbref(), the inpcb lock must be held to drop a
1112 * reference on an inpcb. Historically more work was done here (actually, in
1113 * in_pcbfree_internal()) but has been moved to in_pcbfree() to avoid the
1114 * need for the pcbinfo lock in in_pcbrele(). Deferring the free is entirely
1115 * about memory stability (and continued use of the write lock).
1118 in_pcbrele_rlocked(struct inpcb *inp)
1120 struct inpcbinfo *pcbinfo;
1122 KASSERT(inp->inp_refcount > 0, ("%s: refcount 0", __func__));
1124 INP_RLOCK_ASSERT(inp);
1126 if (refcount_release(&inp->inp_refcount) == 0) {
1128 * If the inpcb has been freed, let the caller know, even if
1129 * this isn't the last reference.
1131 if (inp->inp_flags2 & INP_FREED) {
1138 KASSERT(inp->inp_socket == NULL, ("%s: inp_socket != NULL", __func__));
1141 pcbinfo = inp->inp_pcbinfo;
1142 uma_zfree(pcbinfo->ipi_zone, inp);
1147 in_pcbrele_wlocked(struct inpcb *inp)
1149 struct inpcbinfo *pcbinfo;
1151 KASSERT(inp->inp_refcount > 0, ("%s: refcount 0", __func__));
1153 INP_WLOCK_ASSERT(inp);
1155 if (refcount_release(&inp->inp_refcount) == 0)
1158 KASSERT(inp->inp_socket == NULL, ("%s: inp_socket != NULL", __func__));
1161 pcbinfo = inp->inp_pcbinfo;
1162 uma_zfree(pcbinfo->ipi_zone, inp);
1167 * Temporary wrapper.
1170 in_pcbrele(struct inpcb *inp)
1173 return (in_pcbrele_wlocked(inp));
1177 * Unconditionally schedule an inpcb to be freed by decrementing its
1178 * reference count, which should occur only after the inpcb has been detached
1179 * from its socket. If another thread holds a temporary reference (acquired
1180 * using in_pcbref()) then the free is deferred until that reference is
1181 * released using in_pcbrele(), but the inpcb is still unlocked. Almost all
1182 * work, including removal from global lists, is done in this context, where
1183 * the pcbinfo lock is held.
1186 in_pcbfree(struct inpcb *inp)
1188 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
1190 KASSERT(inp->inp_socket == NULL, ("%s: inp_socket != NULL", __func__));
1192 INP_INFO_WLOCK_ASSERT(pcbinfo);
1193 INP_WLOCK_ASSERT(inp);
1195 /* XXXRW: Do as much as possible here. */
1197 if (inp->inp_sp != NULL)
1198 ipsec_delete_pcbpolicy(inp);
1200 inp->inp_gencnt = ++pcbinfo->ipi_gencnt;
1201 in_pcbremlists(inp);
1203 if (inp->inp_vflag & INP_IPV6PROTO) {
1204 ip6_freepcbopts(inp->in6p_outputopts);
1205 if (inp->in6p_moptions != NULL)
1206 ip6_freemoptions(inp->in6p_moptions);
1209 if (inp->inp_options)
1210 (void)m_free(inp->inp_options);
1212 if (inp->inp_moptions != NULL)
1213 inp_freemoptions(inp->inp_moptions);
1216 inp->inp_flags2 |= INP_FREED;
1217 crfree(inp->inp_cred);
1219 mac_inpcb_destroy(inp);
1221 if (!in_pcbrele_wlocked(inp))
1226 * in_pcbdrop() removes an inpcb from hashed lists, releasing its address and
1227 * port reservation, and preventing it from being returned by inpcb lookups.
1229 * It is used by TCP to mark an inpcb as unused and avoid future packet
1230 * delivery or event notification when a socket remains open but TCP has
1231 * closed. This might occur as a result of a shutdown()-initiated TCP close
1232 * or a RST on the wire, and allows the port binding to be reused while still
1233 * maintaining the invariant that so_pcb always points to a valid inpcb until
1236 * XXXRW: Possibly in_pcbdrop() should also prevent future notifications by
1237 * in_pcbnotifyall() and in_pcbpurgeif0()?
1240 in_pcbdrop(struct inpcb *inp)
1243 INP_WLOCK_ASSERT(inp);
1246 * XXXRW: Possibly we should protect the setting of INP_DROPPED with
1249 inp->inp_flags |= INP_DROPPED;
1250 if (inp->inp_flags & INP_INHASHLIST) {
1251 struct inpcbport *phd = inp->inp_phd;
1253 INP_HASH_WLOCK(inp->inp_pcbinfo);
1254 LIST_REMOVE(inp, inp_hash);
1255 LIST_REMOVE(inp, inp_portlist);
1256 if (LIST_FIRST(&phd->phd_pcblist) == NULL) {
1257 LIST_REMOVE(phd, phd_hash);
1260 INP_HASH_WUNLOCK(inp->inp_pcbinfo);
1261 inp->inp_flags &= ~INP_INHASHLIST;
1263 in_pcbgroup_remove(inp);
1270 * Common routines to return the socket addresses associated with inpcbs.
1273 in_sockaddr(in_port_t port, struct in_addr *addr_p)
1275 struct sockaddr_in *sin;
1277 sin = malloc(sizeof *sin, M_SONAME,
1279 sin->sin_family = AF_INET;
1280 sin->sin_len = sizeof(*sin);
1281 sin->sin_addr = *addr_p;
1282 sin->sin_port = port;
1284 return (struct sockaddr *)sin;
1288 in_getsockaddr(struct socket *so, struct sockaddr **nam)
1291 struct in_addr addr;
1294 inp = sotoinpcb(so);
1295 KASSERT(inp != NULL, ("in_getsockaddr: inp == NULL"));
1298 port = inp->inp_lport;
1299 addr = inp->inp_laddr;
1302 *nam = in_sockaddr(port, &addr);
1307 in_getpeeraddr(struct socket *so, struct sockaddr **nam)
1310 struct in_addr addr;
1313 inp = sotoinpcb(so);
1314 KASSERT(inp != NULL, ("in_getpeeraddr: inp == NULL"));
1317 port = inp->inp_fport;
1318 addr = inp->inp_faddr;
1321 *nam = in_sockaddr(port, &addr);
1326 in_pcbnotifyall(struct inpcbinfo *pcbinfo, struct in_addr faddr, int errno,
1327 struct inpcb *(*notify)(struct inpcb *, int))
1329 struct inpcb *inp, *inp_temp;
1331 INP_INFO_WLOCK(pcbinfo);
1332 LIST_FOREACH_SAFE(inp, pcbinfo->ipi_listhead, inp_list, inp_temp) {
1335 if ((inp->inp_vflag & INP_IPV4) == 0) {
1340 if (inp->inp_faddr.s_addr != faddr.s_addr ||
1341 inp->inp_socket == NULL) {
1345 if ((*notify)(inp, errno))
1348 INP_INFO_WUNLOCK(pcbinfo);
1352 in_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp)
1355 struct ip_moptions *imo;
1358 INP_INFO_RLOCK(pcbinfo);
1359 LIST_FOREACH(inp, pcbinfo->ipi_listhead, inp_list) {
1361 imo = inp->inp_moptions;
1362 if ((inp->inp_vflag & INP_IPV4) &&
1365 * Unselect the outgoing interface if it is being
1368 if (imo->imo_multicast_ifp == ifp)
1369 imo->imo_multicast_ifp = NULL;
1372 * Drop multicast group membership if we joined
1373 * through the interface being detached.
1375 for (i = 0, gap = 0; i < imo->imo_num_memberships;
1377 if (imo->imo_membership[i]->inm_ifp == ifp) {
1378 in_delmulti(imo->imo_membership[i]);
1380 } else if (gap != 0)
1381 imo->imo_membership[i - gap] =
1382 imo->imo_membership[i];
1384 imo->imo_num_memberships -= gap;
1388 INP_INFO_RUNLOCK(pcbinfo);
1392 * Lookup a PCB based on the local address and port. Caller must hold the
1393 * hash lock. No inpcb locks or references are acquired.
1395 #define INP_LOOKUP_MAPPED_PCB_COST 3
1397 in_pcblookup_local(struct inpcbinfo *pcbinfo, struct in_addr laddr,
1398 u_short lport, int lookupflags, struct ucred *cred)
1402 int matchwild = 3 + INP_LOOKUP_MAPPED_PCB_COST;
1408 KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
1409 ("%s: invalid lookup flags %d", __func__, lookupflags));
1411 INP_HASH_LOCK_ASSERT(pcbinfo);
1413 if ((lookupflags & INPLOOKUP_WILDCARD) == 0) {
1414 struct inpcbhead *head;
1416 * Look for an unconnected (wildcard foreign addr) PCB that
1417 * matches the local address and port we're looking for.
1419 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(INADDR_ANY, lport,
1420 0, pcbinfo->ipi_hashmask)];
1421 LIST_FOREACH(inp, head, inp_hash) {
1423 /* XXX inp locking */
1424 if ((inp->inp_vflag & INP_IPV4) == 0)
1427 if (inp->inp_faddr.s_addr == INADDR_ANY &&
1428 inp->inp_laddr.s_addr == laddr.s_addr &&
1429 inp->inp_lport == lport) {
1434 prison_equal_ip4(cred->cr_prison,
1435 inp->inp_cred->cr_prison))
1444 struct inpcbporthead *porthash;
1445 struct inpcbport *phd;
1446 struct inpcb *match = NULL;
1448 * Best fit PCB lookup.
1450 * First see if this local port is in use by looking on the
1453 porthash = &pcbinfo->ipi_porthashbase[INP_PCBPORTHASH(lport,
1454 pcbinfo->ipi_porthashmask)];
1455 LIST_FOREACH(phd, porthash, phd_hash) {
1456 if (phd->phd_port == lport)
1461 * Port is in use by one or more PCBs. Look for best
1464 LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) {
1467 !prison_equal_ip4(inp->inp_cred->cr_prison,
1471 /* XXX inp locking */
1472 if ((inp->inp_vflag & INP_IPV4) == 0)
1475 * We never select the PCB that has
1476 * INP_IPV6 flag and is bound to :: if
1477 * we have another PCB which is bound
1478 * to 0.0.0.0. If a PCB has the
1479 * INP_IPV6 flag, then we set its cost
1480 * higher than IPv4 only PCBs.
1482 * Note that the case only happens
1483 * when a socket is bound to ::, under
1484 * the condition that the use of the
1485 * mapped address is allowed.
1487 if ((inp->inp_vflag & INP_IPV6) != 0)
1488 wildcard += INP_LOOKUP_MAPPED_PCB_COST;
1490 if (inp->inp_faddr.s_addr != INADDR_ANY)
1492 if (inp->inp_laddr.s_addr != INADDR_ANY) {
1493 if (laddr.s_addr == INADDR_ANY)
1495 else if (inp->inp_laddr.s_addr != laddr.s_addr)
1498 if (laddr.s_addr != INADDR_ANY)
1501 if (wildcard < matchwild) {
1503 matchwild = wildcard;
1512 #undef INP_LOOKUP_MAPPED_PCB_COST
1516 * Lookup PCB in hash list, using pcbgroup tables.
1518 static struct inpcb *
1519 in_pcblookup_group(struct inpcbinfo *pcbinfo, struct inpcbgroup *pcbgroup,
1520 struct in_addr faddr, u_int fport_arg, struct in_addr laddr,
1521 u_int lport_arg, int lookupflags, struct ifnet *ifp)
1523 struct inpcbhead *head;
1524 struct inpcb *inp, *tmpinp;
1525 u_short fport = fport_arg, lport = lport_arg;
1528 * First look for an exact match.
1531 INP_GROUP_LOCK(pcbgroup);
1532 head = &pcbgroup->ipg_hashbase[INP_PCBHASH(faddr.s_addr, lport, fport,
1533 pcbgroup->ipg_hashmask)];
1534 LIST_FOREACH(inp, head, inp_pcbgrouphash) {
1536 /* XXX inp locking */
1537 if ((inp->inp_vflag & INP_IPV4) == 0)
1540 if (inp->inp_faddr.s_addr == faddr.s_addr &&
1541 inp->inp_laddr.s_addr == laddr.s_addr &&
1542 inp->inp_fport == fport &&
1543 inp->inp_lport == lport) {
1545 * XXX We should be able to directly return
1546 * the inp here, without any checks.
1547 * Well unless both bound with SO_REUSEPORT?
1549 if (prison_flag(inp->inp_cred, PR_IP4))
1555 if (tmpinp != NULL) {
1561 * Then look for a wildcard match, if requested.
1563 if ((lookupflags & INPLOOKUP_WILDCARD) != 0) {
1564 struct inpcb *local_wild = NULL, *local_exact = NULL;
1566 struct inpcb *local_wild_mapped = NULL;
1568 struct inpcb *jail_wild = NULL;
1569 struct inpcbhead *head;
1573 * Order of socket selection - we always prefer jails.
1574 * 1. jailed, non-wild.
1576 * 3. non-jailed, non-wild.
1577 * 4. non-jailed, wild.
1579 head = &pcbinfo->ipi_wildbase[INP_PCBHASH(INADDR_ANY, lport,
1580 0, pcbinfo->ipi_wildmask)];
1581 LIST_FOREACH(inp, head, inp_pcbgroup_wild) {
1583 /* XXX inp locking */
1584 if ((inp->inp_vflag & INP_IPV4) == 0)
1587 if (inp->inp_faddr.s_addr != INADDR_ANY ||
1588 inp->inp_lport != lport)
1591 /* XXX inp locking */
1592 if (ifp && ifp->if_type == IFT_FAITH &&
1593 (inp->inp_flags & INP_FAITH) == 0)
1596 injail = prison_flag(inp->inp_cred, PR_IP4);
1598 if (prison_check_ip4(inp->inp_cred,
1602 if (local_exact != NULL)
1606 if (inp->inp_laddr.s_addr == laddr.s_addr) {
1611 } else if (inp->inp_laddr.s_addr == INADDR_ANY) {
1613 /* XXX inp locking, NULL check */
1614 if (inp->inp_vflag & INP_IPV6PROTO)
1615 local_wild_mapped = inp;
1623 } /* LIST_FOREACH */
1631 inp = local_wild_mapped;
1635 } /* if (lookupflags & INPLOOKUP_WILDCARD) */
1636 INP_GROUP_UNLOCK(pcbgroup);
1641 INP_GROUP_UNLOCK(pcbgroup);
1642 if (lookupflags & INPLOOKUP_WLOCKPCB) {
1644 if (in_pcbrele_wlocked(inp))
1646 } else if (lookupflags & INPLOOKUP_RLOCKPCB) {
1648 if (in_pcbrele_rlocked(inp))
1651 panic("%s: locking bug", __func__);
1654 #endif /* PCBGROUP */
1657 * Lookup PCB in hash list, using pcbinfo tables. This variation assumes
1658 * that the caller has locked the hash list, and will not perform any further
1659 * locking or reference operations on either the hash list or the connection.
1661 static struct inpcb *
1662 in_pcblookup_hash_locked(struct inpcbinfo *pcbinfo, struct in_addr faddr,
1663 u_int fport_arg, struct in_addr laddr, u_int lport_arg, int lookupflags,
1666 struct inpcbhead *head;
1667 struct inpcb *inp, *tmpinp;
1668 u_short fport = fport_arg, lport = lport_arg;
1670 KASSERT((lookupflags & ~(INPLOOKUP_WILDCARD)) == 0,
1671 ("%s: invalid lookup flags %d", __func__, lookupflags));
1673 INP_HASH_LOCK_ASSERT(pcbinfo);
1676 * First look for an exact match.
1679 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(faddr.s_addr, lport, fport,
1680 pcbinfo->ipi_hashmask)];
1681 LIST_FOREACH(inp, head, inp_hash) {
1683 /* XXX inp locking */
1684 if ((inp->inp_vflag & INP_IPV4) == 0)
1687 if (inp->inp_faddr.s_addr == faddr.s_addr &&
1688 inp->inp_laddr.s_addr == laddr.s_addr &&
1689 inp->inp_fport == fport &&
1690 inp->inp_lport == lport) {
1692 * XXX We should be able to directly return
1693 * the inp here, without any checks.
1694 * Well unless both bound with SO_REUSEPORT?
1696 if (prison_flag(inp->inp_cred, PR_IP4))
1706 * Then look for a wildcard match, if requested.
1708 if ((lookupflags & INPLOOKUP_WILDCARD) != 0) {
1709 struct inpcb *local_wild = NULL, *local_exact = NULL;
1711 struct inpcb *local_wild_mapped = NULL;
1713 struct inpcb *jail_wild = NULL;
1717 * Order of socket selection - we always prefer jails.
1718 * 1. jailed, non-wild.
1720 * 3. non-jailed, non-wild.
1721 * 4. non-jailed, wild.
1724 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(INADDR_ANY, lport,
1725 0, pcbinfo->ipi_hashmask)];
1726 LIST_FOREACH(inp, head, inp_hash) {
1728 /* XXX inp locking */
1729 if ((inp->inp_vflag & INP_IPV4) == 0)
1732 if (inp->inp_faddr.s_addr != INADDR_ANY ||
1733 inp->inp_lport != lport)
1736 /* XXX inp locking */
1737 if (ifp && ifp->if_type == IFT_FAITH &&
1738 (inp->inp_flags & INP_FAITH) == 0)
1741 injail = prison_flag(inp->inp_cred, PR_IP4);
1743 if (prison_check_ip4(inp->inp_cred,
1747 if (local_exact != NULL)
1751 if (inp->inp_laddr.s_addr == laddr.s_addr) {
1756 } else if (inp->inp_laddr.s_addr == INADDR_ANY) {
1758 /* XXX inp locking, NULL check */
1759 if (inp->inp_vflag & INP_IPV6PROTO)
1760 local_wild_mapped = inp;
1768 } /* LIST_FOREACH */
1769 if (jail_wild != NULL)
1771 if (local_exact != NULL)
1772 return (local_exact);
1773 if (local_wild != NULL)
1774 return (local_wild);
1776 if (local_wild_mapped != NULL)
1777 return (local_wild_mapped);
1779 } /* if ((lookupflags & INPLOOKUP_WILDCARD) != 0) */
1785 * Lookup PCB in hash list, using pcbinfo tables. This variation locks the
1786 * hash list lock, and will return the inpcb locked (i.e., requires
1787 * INPLOOKUP_LOCKPCB).
1789 static struct inpcb *
1790 in_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in_addr faddr,
1791 u_int fport, struct in_addr laddr, u_int lport, int lookupflags,
1796 INP_HASH_RLOCK(pcbinfo);
1797 inp = in_pcblookup_hash_locked(pcbinfo, faddr, fport, laddr, lport,
1798 (lookupflags & ~(INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)), ifp);
1801 INP_HASH_RUNLOCK(pcbinfo);
1802 if (lookupflags & INPLOOKUP_WLOCKPCB) {
1804 if (in_pcbrele_wlocked(inp))
1806 } else if (lookupflags & INPLOOKUP_RLOCKPCB) {
1808 if (in_pcbrele_rlocked(inp))
1811 panic("%s: locking bug", __func__);
1813 INP_HASH_RUNLOCK(pcbinfo);
1818 * Public inpcb lookup routines, accepting a 4-tuple, and optionally, an mbuf
1819 * from which a pre-calculated hash value may be extracted.
1821 * Possibly more of this logic should be in in_pcbgroup.c.
1824 in_pcblookup(struct inpcbinfo *pcbinfo, struct in_addr faddr, u_int fport,
1825 struct in_addr laddr, u_int lport, int lookupflags, struct ifnet *ifp)
1827 #if defined(PCBGROUP)
1828 struct inpcbgroup *pcbgroup;
1831 KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0,
1832 ("%s: invalid lookup flags %d", __func__, lookupflags));
1833 KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0,
1834 ("%s: LOCKPCB not set", __func__));
1836 #if defined(PCBGROUP)
1837 if (in_pcbgroup_enabled(pcbinfo)) {
1838 pcbgroup = in_pcbgroup_bytuple(pcbinfo, laddr, lport, faddr,
1840 return (in_pcblookup_group(pcbinfo, pcbgroup, faddr, fport,
1841 laddr, lport, lookupflags, ifp));
1844 return (in_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport,
1849 in_pcblookup_mbuf(struct inpcbinfo *pcbinfo, struct in_addr faddr,
1850 u_int fport, struct in_addr laddr, u_int lport, int lookupflags,
1851 struct ifnet *ifp, struct mbuf *m)
1854 struct inpcbgroup *pcbgroup;
1857 KASSERT((lookupflags & ~INPLOOKUP_MASK) == 0,
1858 ("%s: invalid lookup flags %d", __func__, lookupflags));
1859 KASSERT((lookupflags & (INPLOOKUP_RLOCKPCB | INPLOOKUP_WLOCKPCB)) != 0,
1860 ("%s: LOCKPCB not set", __func__));
1863 if (in_pcbgroup_enabled(pcbinfo)) {
1864 pcbgroup = in_pcbgroup_byhash(pcbinfo, M_HASHTYPE_GET(m),
1865 m->m_pkthdr.flowid);
1866 if (pcbgroup != NULL)
1867 return (in_pcblookup_group(pcbinfo, pcbgroup, faddr,
1868 fport, laddr, lport, lookupflags, ifp));
1869 pcbgroup = in_pcbgroup_bytuple(pcbinfo, laddr, lport, faddr,
1871 return (in_pcblookup_group(pcbinfo, pcbgroup, faddr, fport,
1872 laddr, lport, lookupflags, ifp));
1875 return (in_pcblookup_hash(pcbinfo, faddr, fport, laddr, lport,
1881 * Insert PCB onto various hash lists.
1884 in_pcbinshash_internal(struct inpcb *inp, int do_pcbgroup_update)
1886 struct inpcbhead *pcbhash;
1887 struct inpcbporthead *pcbporthash;
1888 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
1889 struct inpcbport *phd;
1890 u_int32_t hashkey_faddr;
1892 INP_WLOCK_ASSERT(inp);
1893 INP_HASH_WLOCK_ASSERT(pcbinfo);
1895 KASSERT((inp->inp_flags & INP_INHASHLIST) == 0,
1896 ("in_pcbinshash: INP_INHASHLIST"));
1899 if (inp->inp_vflag & INP_IPV6)
1900 hashkey_faddr = inp->in6p_faddr.s6_addr32[3] /* XXX */;
1903 hashkey_faddr = inp->inp_faddr.s_addr;
1905 pcbhash = &pcbinfo->ipi_hashbase[INP_PCBHASH(hashkey_faddr,
1906 inp->inp_lport, inp->inp_fport, pcbinfo->ipi_hashmask)];
1908 pcbporthash = &pcbinfo->ipi_porthashbase[
1909 INP_PCBPORTHASH(inp->inp_lport, pcbinfo->ipi_porthashmask)];
1912 * Go through port list and look for a head for this lport.
1914 LIST_FOREACH(phd, pcbporthash, phd_hash) {
1915 if (phd->phd_port == inp->inp_lport)
1919 * If none exists, malloc one and tack it on.
1922 phd = malloc(sizeof(struct inpcbport), M_PCB, M_NOWAIT);
1924 return (ENOBUFS); /* XXX */
1926 phd->phd_port = inp->inp_lport;
1927 LIST_INIT(&phd->phd_pcblist);
1928 LIST_INSERT_HEAD(pcbporthash, phd, phd_hash);
1931 LIST_INSERT_HEAD(&phd->phd_pcblist, inp, inp_portlist);
1932 LIST_INSERT_HEAD(pcbhash, inp, inp_hash);
1933 inp->inp_flags |= INP_INHASHLIST;
1935 if (do_pcbgroup_update)
1936 in_pcbgroup_update(inp);
1942 * For now, there are two public interfaces to insert an inpcb into the hash
1943 * lists -- one that does update pcbgroups, and one that doesn't. The latter
1944 * is used only in the TCP syncache, where in_pcbinshash is called before the
1945 * full 4-tuple is set for the inpcb, and we don't want to install in the
1946 * pcbgroup until later.
1948 * XXXRW: This seems like a misfeature. in_pcbinshash should always update
1949 * connection groups, and partially initialised inpcbs should not be exposed
1950 * to either reservation hash tables or pcbgroups.
1953 in_pcbinshash(struct inpcb *inp)
1956 return (in_pcbinshash_internal(inp, 1));
1960 in_pcbinshash_nopcbgroup(struct inpcb *inp)
1963 return (in_pcbinshash_internal(inp, 0));
1967 * Move PCB to the proper hash bucket when { faddr, fport } have been
1968 * changed. NOTE: This does not handle the case of the lport changing (the
1969 * hashed port list would have to be updated as well), so the lport must
1970 * not change after in_pcbinshash() has been called.
1973 in_pcbrehash_mbuf(struct inpcb *inp, struct mbuf *m)
1975 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
1976 struct inpcbhead *head;
1977 u_int32_t hashkey_faddr;
1979 INP_WLOCK_ASSERT(inp);
1980 INP_HASH_WLOCK_ASSERT(pcbinfo);
1982 KASSERT(inp->inp_flags & INP_INHASHLIST,
1983 ("in_pcbrehash: !INP_INHASHLIST"));
1986 if (inp->inp_vflag & INP_IPV6)
1987 hashkey_faddr = inp->in6p_faddr.s6_addr32[3] /* XXX */;
1990 hashkey_faddr = inp->inp_faddr.s_addr;
1992 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(hashkey_faddr,
1993 inp->inp_lport, inp->inp_fport, pcbinfo->ipi_hashmask)];
1995 LIST_REMOVE(inp, inp_hash);
1996 LIST_INSERT_HEAD(head, inp, inp_hash);
2000 in_pcbgroup_update_mbuf(inp, m);
2002 in_pcbgroup_update(inp);
2007 in_pcbrehash(struct inpcb *inp)
2010 in_pcbrehash_mbuf(inp, NULL);
2014 * Remove PCB from various lists.
2017 in_pcbremlists(struct inpcb *inp)
2019 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
2021 INP_INFO_WLOCK_ASSERT(pcbinfo);
2022 INP_WLOCK_ASSERT(inp);
2024 inp->inp_gencnt = ++pcbinfo->ipi_gencnt;
2025 if (inp->inp_flags & INP_INHASHLIST) {
2026 struct inpcbport *phd = inp->inp_phd;
2028 INP_HASH_WLOCK(pcbinfo);
2029 LIST_REMOVE(inp, inp_hash);
2030 LIST_REMOVE(inp, inp_portlist);
2031 if (LIST_FIRST(&phd->phd_pcblist) == NULL) {
2032 LIST_REMOVE(phd, phd_hash);
2035 INP_HASH_WUNLOCK(pcbinfo);
2036 inp->inp_flags &= ~INP_INHASHLIST;
2038 LIST_REMOVE(inp, inp_list);
2039 pcbinfo->ipi_count--;
2041 in_pcbgroup_remove(inp);
2046 * A set label operation has occurred at the socket layer, propagate the
2047 * label change into the in_pcb for the socket.
2050 in_pcbsosetlabel(struct socket *so)
2055 inp = sotoinpcb(so);
2056 KASSERT(inp != NULL, ("in_pcbsosetlabel: so->so_pcb == NULL"));
2060 mac_inpcb_sosetlabel(so, inp);
2067 * ipport_tick runs once per second, determining if random port allocation
2068 * should be continued. If more than ipport_randomcps ports have been
2069 * allocated in the last second, then we return to sequential port
2070 * allocation. We return to random allocation only once we drop below
2071 * ipport_randomcps for at least ipport_randomtime seconds.
2074 ipport_tick(void *xtp)
2076 VNET_ITERATOR_DECL(vnet_iter);
2078 VNET_LIST_RLOCK_NOSLEEP();
2079 VNET_FOREACH(vnet_iter) {
2080 CURVNET_SET(vnet_iter); /* XXX appease INVARIANTS here */
2081 if (V_ipport_tcpallocs <=
2082 V_ipport_tcplastcount + V_ipport_randomcps) {
2083 if (V_ipport_stoprandom > 0)
2084 V_ipport_stoprandom--;
2086 V_ipport_stoprandom = V_ipport_randomtime;
2087 V_ipport_tcplastcount = V_ipport_tcpallocs;
2090 VNET_LIST_RUNLOCK_NOSLEEP();
2091 callout_reset(&ipport_tick_callout, hz, ipport_tick, NULL);
2098 callout_stop(&ipport_tick_callout);
2102 * The ipport_callout should start running at about the time we attach the
2103 * inet or inet6 domains.
2106 ipport_tick_init(const void *unused __unused)
2109 /* Start ipport_tick. */
2110 callout_init(&ipport_tick_callout, CALLOUT_MPSAFE);
2111 callout_reset(&ipport_tick_callout, 1, ipport_tick, NULL);
2112 EVENTHANDLER_REGISTER(shutdown_pre_sync, ip_fini, NULL,
2113 SHUTDOWN_PRI_DEFAULT);
2115 SYSINIT(ipport_tick_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_MIDDLE,
2116 ipport_tick_init, NULL);
2119 inp_wlock(struct inpcb *inp)
2126 inp_wunlock(struct inpcb *inp)
2133 inp_rlock(struct inpcb *inp)
2140 inp_runlock(struct inpcb *inp)
2148 inp_lock_assert(struct inpcb *inp)
2151 INP_WLOCK_ASSERT(inp);
2155 inp_unlock_assert(struct inpcb *inp)
2158 INP_UNLOCK_ASSERT(inp);
2163 inp_apply_all(void (*func)(struct inpcb *, void *), void *arg)
2167 INP_INFO_RLOCK(&V_tcbinfo);
2168 LIST_FOREACH(inp, V_tcbinfo.ipi_listhead, inp_list) {
2173 INP_INFO_RUNLOCK(&V_tcbinfo);
2177 inp_inpcbtosocket(struct inpcb *inp)
2180 INP_WLOCK_ASSERT(inp);
2181 return (inp->inp_socket);
2185 inp_inpcbtotcpcb(struct inpcb *inp)
2188 INP_WLOCK_ASSERT(inp);
2189 return ((struct tcpcb *)inp->inp_ppcb);
2193 inp_ip_tos_get(const struct inpcb *inp)
2196 return (inp->inp_ip_tos);
2200 inp_ip_tos_set(struct inpcb *inp, int val)
2203 inp->inp_ip_tos = val;
2207 inp_4tuple_get(struct inpcb *inp, uint32_t *laddr, uint16_t *lp,
2208 uint32_t *faddr, uint16_t *fp)
2211 INP_LOCK_ASSERT(inp);
2212 *laddr = inp->inp_laddr.s_addr;
2213 *faddr = inp->inp_faddr.s_addr;
2214 *lp = inp->inp_lport;
2215 *fp = inp->inp_fport;
2219 so_sotoinpcb(struct socket *so)
2222 return (sotoinpcb(so));
2226 so_sototcpcb(struct socket *so)
2229 return (sototcpcb(so));
2234 db_print_indent(int indent)
2238 for (i = 0; i < indent; i++)
2243 db_print_inconninfo(struct in_conninfo *inc, const char *name, int indent)
2245 char faddr_str[48], laddr_str[48];
2247 db_print_indent(indent);
2248 db_printf("%s at %p\n", name, inc);
2253 if (inc->inc_flags & INC_ISIPV6) {
2255 ip6_sprintf(laddr_str, &inc->inc6_laddr);
2256 ip6_sprintf(faddr_str, &inc->inc6_faddr);
2261 inet_ntoa_r(inc->inc_laddr, laddr_str);
2262 inet_ntoa_r(inc->inc_faddr, faddr_str);
2264 db_print_indent(indent);
2265 db_printf("inc_laddr %s inc_lport %u\n", laddr_str,
2266 ntohs(inc->inc_lport));
2267 db_print_indent(indent);
2268 db_printf("inc_faddr %s inc_fport %u\n", faddr_str,
2269 ntohs(inc->inc_fport));
2273 db_print_inpflags(int inp_flags)
2278 if (inp_flags & INP_RECVOPTS) {
2279 db_printf("%sINP_RECVOPTS", comma ? ", " : "");
2282 if (inp_flags & INP_RECVRETOPTS) {
2283 db_printf("%sINP_RECVRETOPTS", comma ? ", " : "");
2286 if (inp_flags & INP_RECVDSTADDR) {
2287 db_printf("%sINP_RECVDSTADDR", comma ? ", " : "");
2290 if (inp_flags & INP_HDRINCL) {
2291 db_printf("%sINP_HDRINCL", comma ? ", " : "");
2294 if (inp_flags & INP_HIGHPORT) {
2295 db_printf("%sINP_HIGHPORT", comma ? ", " : "");
2298 if (inp_flags & INP_LOWPORT) {
2299 db_printf("%sINP_LOWPORT", comma ? ", " : "");
2302 if (inp_flags & INP_ANONPORT) {
2303 db_printf("%sINP_ANONPORT", comma ? ", " : "");
2306 if (inp_flags & INP_RECVIF) {
2307 db_printf("%sINP_RECVIF", comma ? ", " : "");
2310 if (inp_flags & INP_MTUDISC) {
2311 db_printf("%sINP_MTUDISC", comma ? ", " : "");
2314 if (inp_flags & INP_FAITH) {
2315 db_printf("%sINP_FAITH", comma ? ", " : "");
2318 if (inp_flags & INP_RECVTTL) {
2319 db_printf("%sINP_RECVTTL", comma ? ", " : "");
2322 if (inp_flags & INP_DONTFRAG) {
2323 db_printf("%sINP_DONTFRAG", comma ? ", " : "");
2326 if (inp_flags & INP_RECVTOS) {
2327 db_printf("%sINP_RECVTOS", comma ? ", " : "");
2330 if (inp_flags & IN6P_IPV6_V6ONLY) {
2331 db_printf("%sIN6P_IPV6_V6ONLY", comma ? ", " : "");
2334 if (inp_flags & IN6P_PKTINFO) {
2335 db_printf("%sIN6P_PKTINFO", comma ? ", " : "");
2338 if (inp_flags & IN6P_HOPLIMIT) {
2339 db_printf("%sIN6P_HOPLIMIT", comma ? ", " : "");
2342 if (inp_flags & IN6P_HOPOPTS) {
2343 db_printf("%sIN6P_HOPOPTS", comma ? ", " : "");
2346 if (inp_flags & IN6P_DSTOPTS) {
2347 db_printf("%sIN6P_DSTOPTS", comma ? ", " : "");
2350 if (inp_flags & IN6P_RTHDR) {
2351 db_printf("%sIN6P_RTHDR", comma ? ", " : "");
2354 if (inp_flags & IN6P_RTHDRDSTOPTS) {
2355 db_printf("%sIN6P_RTHDRDSTOPTS", comma ? ", " : "");
2358 if (inp_flags & IN6P_TCLASS) {
2359 db_printf("%sIN6P_TCLASS", comma ? ", " : "");
2362 if (inp_flags & IN6P_AUTOFLOWLABEL) {
2363 db_printf("%sIN6P_AUTOFLOWLABEL", comma ? ", " : "");
2366 if (inp_flags & INP_TIMEWAIT) {
2367 db_printf("%sINP_TIMEWAIT", comma ? ", " : "");
2370 if (inp_flags & INP_ONESBCAST) {
2371 db_printf("%sINP_ONESBCAST", comma ? ", " : "");
2374 if (inp_flags & INP_DROPPED) {
2375 db_printf("%sINP_DROPPED", comma ? ", " : "");
2378 if (inp_flags & INP_SOCKREF) {
2379 db_printf("%sINP_SOCKREF", comma ? ", " : "");
2382 if (inp_flags & IN6P_RFC2292) {
2383 db_printf("%sIN6P_RFC2292", comma ? ", " : "");
2386 if (inp_flags & IN6P_MTU) {
2387 db_printf("IN6P_MTU%s", comma ? ", " : "");
2393 db_print_inpvflag(u_char inp_vflag)
2398 if (inp_vflag & INP_IPV4) {
2399 db_printf("%sINP_IPV4", comma ? ", " : "");
2402 if (inp_vflag & INP_IPV6) {
2403 db_printf("%sINP_IPV6", comma ? ", " : "");
2406 if (inp_vflag & INP_IPV6PROTO) {
2407 db_printf("%sINP_IPV6PROTO", comma ? ", " : "");
2413 db_print_inpcb(struct inpcb *inp, const char *name, int indent)
2416 db_print_indent(indent);
2417 db_printf("%s at %p\n", name, inp);
2421 db_print_indent(indent);
2422 db_printf("inp_flow: 0x%x\n", inp->inp_flow);
2424 db_print_inconninfo(&inp->inp_inc, "inp_conninfo", indent);
2426 db_print_indent(indent);
2427 db_printf("inp_ppcb: %p inp_pcbinfo: %p inp_socket: %p\n",
2428 inp->inp_ppcb, inp->inp_pcbinfo, inp->inp_socket);
2430 db_print_indent(indent);
2431 db_printf("inp_label: %p inp_flags: 0x%x (",
2432 inp->inp_label, inp->inp_flags);
2433 db_print_inpflags(inp->inp_flags);
2436 db_print_indent(indent);
2437 db_printf("inp_sp: %p inp_vflag: 0x%x (", inp->inp_sp,
2439 db_print_inpvflag(inp->inp_vflag);
2442 db_print_indent(indent);
2443 db_printf("inp_ip_ttl: %d inp_ip_p: %d inp_ip_minttl: %d\n",
2444 inp->inp_ip_ttl, inp->inp_ip_p, inp->inp_ip_minttl);
2446 db_print_indent(indent);
2448 if (inp->inp_vflag & INP_IPV6) {
2449 db_printf("in6p_options: %p in6p_outputopts: %p "
2450 "in6p_moptions: %p\n", inp->in6p_options,
2451 inp->in6p_outputopts, inp->in6p_moptions);
2452 db_printf("in6p_icmp6filt: %p in6p_cksum %d "
2453 "in6p_hops %u\n", inp->in6p_icmp6filt, inp->in6p_cksum,
2458 db_printf("inp_ip_tos: %d inp_ip_options: %p "
2459 "inp_ip_moptions: %p\n", inp->inp_ip_tos,
2460 inp->inp_options, inp->inp_moptions);
2463 db_print_indent(indent);
2464 db_printf("inp_phd: %p inp_gencnt: %ju\n", inp->inp_phd,
2465 (uintmax_t)inp->inp_gencnt);
2468 DB_SHOW_COMMAND(inpcb, db_show_inpcb)
2473 db_printf("usage: show inpcb <addr>\n");
2476 inp = (struct inpcb *)addr;
2478 db_print_inpcb(inp, "inpcb", 0);