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
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 4. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * @(#)in_pcb.c 8.4 (Berkeley) 5/24/95
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
38 #include "opt_ipsec.h"
39 #include "opt_inet6.h"
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/malloc.h>
45 #include <sys/domain.h>
46 #include <sys/protosw.h>
47 #include <sys/socket.h>
48 #include <sys/socketvar.h>
52 #include <sys/kernel.h>
53 #include <sys/sysctl.h>
62 #include <net/if_types.h>
63 #include <net/route.h>
66 #include <netinet/in.h>
67 #include <netinet/in_pcb.h>
68 #include <netinet/in_var.h>
69 #include <netinet/ip_var.h>
70 #include <netinet/tcp_var.h>
71 #include <netinet/udp.h>
72 #include <netinet/udp_var.h>
74 #include <netinet/ip6.h>
75 #include <netinet6/ip6_var.h>
80 #include <netipsec/ipsec.h>
81 #include <netipsec/key.h>
84 #include <security/mac/mac_framework.h>
87 * These configure the range of local port addresses assigned to
88 * "unspecified" outgoing connections/packets/whatever.
90 VNET_DEFINE(int, ipport_lowfirstauto) = IPPORT_RESERVED - 1; /* 1023 */
91 VNET_DEFINE(int, ipport_lowlastauto) = IPPORT_RESERVEDSTART; /* 600 */
92 VNET_DEFINE(int, ipport_firstauto) = IPPORT_EPHEMERALFIRST; /* 10000 */
93 VNET_DEFINE(int, ipport_lastauto) = IPPORT_EPHEMERALLAST; /* 65535 */
94 VNET_DEFINE(int, ipport_hifirstauto) = IPPORT_HIFIRSTAUTO; /* 49152 */
95 VNET_DEFINE(int, ipport_hilastauto) = IPPORT_HILASTAUTO; /* 65535 */
98 * Reserved ports accessible only to root. There are significant
99 * security considerations that must be accounted for when changing these,
100 * but the security benefits can be great. Please be careful.
102 VNET_DEFINE(int, ipport_reservedhigh) = IPPORT_RESERVED - 1; /* 1023 */
103 VNET_DEFINE(int, ipport_reservedlow);
105 /* Variables dealing with random ephemeral port allocation. */
106 VNET_DEFINE(int, ipport_randomized) = 1; /* user controlled via sysctl */
107 VNET_DEFINE(int, ipport_randomcps) = 10; /* user controlled via sysctl */
108 VNET_DEFINE(int, ipport_randomtime) = 45; /* user controlled via sysctl */
109 VNET_DEFINE(int, ipport_stoprandom); /* toggled by ipport_tick */
110 VNET_DEFINE(int, ipport_tcpallocs);
111 static VNET_DEFINE(int, ipport_tcplastcount);
113 #define V_ipport_tcplastcount VNET(ipport_tcplastcount)
115 #define RANGECHK(var, min, max) \
116 if ((var) < (min)) { (var) = (min); } \
117 else if ((var) > (max)) { (var) = (max); }
119 static void in_pcbremlists(struct inpcb *inp);
122 sysctl_net_ipport_check(SYSCTL_HANDLER_ARGS)
127 error = vnet_sysctl_handle_int(oidp, arg1, arg2, req);
129 error = sysctl_handle_int(oidp, arg1, arg2, req);
132 RANGECHK(V_ipport_lowfirstauto, 1, IPPORT_RESERVED - 1);
133 RANGECHK(V_ipport_lowlastauto, 1, IPPORT_RESERVED - 1);
134 RANGECHK(V_ipport_firstauto, IPPORT_RESERVED, IPPORT_MAX);
135 RANGECHK(V_ipport_lastauto, IPPORT_RESERVED, IPPORT_MAX);
136 RANGECHK(V_ipport_hifirstauto, IPPORT_RESERVED, IPPORT_MAX);
137 RANGECHK(V_ipport_hilastauto, IPPORT_RESERVED, IPPORT_MAX);
144 SYSCTL_NODE(_net_inet_ip, IPPROTO_IP, portrange, CTLFLAG_RW, 0, "IP Ports");
146 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, lowfirst,
147 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_lowfirstauto), 0,
148 &sysctl_net_ipport_check, "I", "");
149 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, lowlast,
150 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_lowlastauto), 0,
151 &sysctl_net_ipport_check, "I", "");
152 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, first,
153 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_firstauto), 0,
154 &sysctl_net_ipport_check, "I", "");
155 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, last,
156 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_lastauto), 0,
157 &sysctl_net_ipport_check, "I", "");
158 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, hifirst,
159 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_hifirstauto), 0,
160 &sysctl_net_ipport_check, "I", "");
161 SYSCTL_VNET_PROC(_net_inet_ip_portrange, OID_AUTO, hilast,
162 CTLTYPE_INT|CTLFLAG_RW, &VNET_NAME(ipport_hilastauto), 0,
163 &sysctl_net_ipport_check, "I", "");
164 SYSCTL_VNET_INT(_net_inet_ip_portrange, OID_AUTO, reservedhigh,
165 CTLFLAG_RW|CTLFLAG_SECURE, &VNET_NAME(ipport_reservedhigh), 0, "");
166 SYSCTL_VNET_INT(_net_inet_ip_portrange, OID_AUTO, reservedlow,
167 CTLFLAG_RW|CTLFLAG_SECURE, &VNET_NAME(ipport_reservedlow), 0, "");
168 SYSCTL_VNET_INT(_net_inet_ip_portrange, OID_AUTO, randomized, CTLFLAG_RW,
169 &VNET_NAME(ipport_randomized), 0, "Enable random port allocation");
170 SYSCTL_VNET_INT(_net_inet_ip_portrange, OID_AUTO, randomcps, CTLFLAG_RW,
171 &VNET_NAME(ipport_randomcps), 0, "Maximum number of random port "
172 "allocations before switching to a sequental one");
173 SYSCTL_VNET_INT(_net_inet_ip_portrange, OID_AUTO, randomtime, CTLFLAG_RW,
174 &VNET_NAME(ipport_randomtime), 0,
175 "Minimum time to keep sequental port "
176 "allocation before switching to a random one");
179 * in_pcb.c: manage the Protocol Control Blocks.
181 * NOTE: It is assumed that most of these functions will be called with
182 * the pcbinfo lock held, and often, the inpcb lock held, as these utility
183 * functions often modify hash chains or addresses in pcbs.
187 * Allocate a PCB and associate it with the socket.
188 * On success return with the PCB locked.
191 in_pcballoc(struct socket *so, struct inpcbinfo *pcbinfo)
196 INP_INFO_WLOCK_ASSERT(pcbinfo);
198 inp = uma_zalloc(pcbinfo->ipi_zone, M_NOWAIT);
201 bzero(inp, inp_zero_size);
202 inp->inp_pcbinfo = pcbinfo;
203 inp->inp_socket = so;
204 inp->inp_cred = crhold(so->so_cred);
205 inp->inp_inc.inc_fibnum = so->so_fibnum;
207 error = mac_inpcb_init(inp, M_NOWAIT);
210 mac_inpcb_create(so, inp);
213 error = ipsec_init_policy(so, &inp->inp_sp);
216 mac_inpcb_destroy(inp);
222 if (INP_SOCKAF(so) == AF_INET6) {
223 inp->inp_vflag |= INP_IPV6PROTO;
225 inp->inp_flags |= IN6P_IPV6_V6ONLY;
228 LIST_INSERT_HEAD(pcbinfo->ipi_listhead, inp, inp_list);
229 pcbinfo->ipi_count++;
230 so->so_pcb = (caddr_t)inp;
232 if (V_ip6_auto_flowlabel)
233 inp->inp_flags |= IN6P_AUTOFLOWLABEL;
236 inp->inp_gencnt = ++pcbinfo->ipi_gencnt;
237 inp->inp_refcount = 1; /* Reference from the inpcbinfo */
238 #if defined(IPSEC) || defined(MAC)
241 crfree(inp->inp_cred);
242 uma_zfree(pcbinfo->ipi_zone, inp);
249 in_pcbbind(struct inpcb *inp, struct sockaddr *nam, struct ucred *cred)
253 INP_INFO_WLOCK_ASSERT(inp->inp_pcbinfo);
254 INP_WLOCK_ASSERT(inp);
256 if (inp->inp_lport != 0 || inp->inp_laddr.s_addr != INADDR_ANY)
258 anonport = inp->inp_lport == 0 && (nam == NULL ||
259 ((struct sockaddr_in *)nam)->sin_port == 0);
260 error = in_pcbbind_setup(inp, nam, &inp->inp_laddr.s_addr,
261 &inp->inp_lport, cred);
264 if (in_pcbinshash(inp) != 0) {
265 inp->inp_laddr.s_addr = INADDR_ANY;
270 inp->inp_flags |= INP_ANONPORT;
275 * Set up a bind operation on a PCB, performing port allocation
276 * as required, but do not actually modify the PCB. Callers can
277 * either complete the bind by setting inp_laddr/inp_lport and
278 * calling in_pcbinshash(), or they can just use the resulting
279 * port and address to authorise the sending of a once-off packet.
281 * On error, the values of *laddrp and *lportp are not changed.
284 in_pcbbind_setup(struct inpcb *inp, struct sockaddr *nam, in_addr_t *laddrp,
285 u_short *lportp, struct ucred *cred)
287 struct socket *so = inp->inp_socket;
288 unsigned short *lastport;
289 struct sockaddr_in *sin;
290 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
291 struct in_addr laddr;
293 int wild = 0, reuseport = (so->so_options & SO_REUSEPORT);
298 * Because no actual state changes occur here, a global write lock on
299 * the pcbinfo isn't required.
301 INP_INFO_LOCK_ASSERT(pcbinfo);
302 INP_LOCK_ASSERT(inp);
304 if (TAILQ_EMPTY(&V_in_ifaddrhead)) /* XXX broken! */
305 return (EADDRNOTAVAIL);
306 laddr.s_addr = *laddrp;
307 if (nam != NULL && laddr.s_addr != INADDR_ANY)
309 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
310 wild = INPLOOKUP_WILDCARD;
312 if ((error = prison_local_ip4(cred, &laddr)) != 0)
315 sin = (struct sockaddr_in *)nam;
316 if (nam->sa_len != sizeof (*sin))
320 * We should check the family, but old programs
321 * incorrectly fail to initialize it.
323 if (sin->sin_family != AF_INET)
324 return (EAFNOSUPPORT);
326 error = prison_local_ip4(cred, &sin->sin_addr);
329 if (sin->sin_port != *lportp) {
330 /* Don't allow the port to change. */
333 lport = sin->sin_port;
335 /* NB: lport is left as 0 if the port isn't being changed. */
336 if (IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
338 * Treat SO_REUSEADDR as SO_REUSEPORT for multicast;
339 * allow complete duplication of binding if
340 * SO_REUSEPORT is set, or if SO_REUSEADDR is set
341 * and a multicast address is bound on both
342 * new and duplicated sockets.
344 if (so->so_options & SO_REUSEADDR)
345 reuseport = SO_REUSEADDR|SO_REUSEPORT;
346 } else if (sin->sin_addr.s_addr != INADDR_ANY) {
347 sin->sin_port = 0; /* yech... */
348 bzero(&sin->sin_zero, sizeof(sin->sin_zero));
350 * Is the address a local IP address?
351 * If INP_BINDANY is set, then the socket may be bound
352 * to any endpoint address, local or not.
354 if ((inp->inp_flags & INP_BINDANY) == 0 &&
355 ifa_ifwithaddr_check((struct sockaddr *)sin) == 0)
356 return (EADDRNOTAVAIL);
358 laddr = sin->sin_addr;
364 if (ntohs(lport) <= V_ipport_reservedhigh &&
365 ntohs(lport) >= V_ipport_reservedlow &&
366 priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT,
369 if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)) &&
370 priv_check_cred(inp->inp_cred,
371 PRIV_NETINET_REUSEPORT, 0) != 0) {
372 t = in_pcblookup_local(pcbinfo, sin->sin_addr,
373 lport, INPLOOKUP_WILDCARD, cred);
376 * This entire block sorely needs a rewrite.
379 ((t->inp_flags & INP_TIMEWAIT) == 0) &&
380 (so->so_type != SOCK_STREAM ||
381 ntohl(t->inp_faddr.s_addr) == INADDR_ANY) &&
382 (ntohl(sin->sin_addr.s_addr) != INADDR_ANY ||
383 ntohl(t->inp_laddr.s_addr) != INADDR_ANY ||
384 (t->inp_socket->so_options &
385 SO_REUSEPORT) == 0) &&
386 (inp->inp_cred->cr_uid !=
387 t->inp_cred->cr_uid))
390 t = in_pcblookup_local(pcbinfo, sin->sin_addr,
392 if (t && (t->inp_flags & INP_TIMEWAIT)) {
394 * XXXRW: If an incpb has had its timewait
395 * state recycled, we treat the address as
396 * being in use (for now). This is better
397 * than a panic, but not desirable.
401 (reuseport & tw->tw_so_options) == 0)
404 (reuseport & t->inp_socket->so_options) == 0) {
406 if (ntohl(sin->sin_addr.s_addr) !=
408 ntohl(t->inp_laddr.s_addr) !=
411 INP_SOCKAF(t->inp_socket))
420 u_short first, last, aux;
423 if (inp->inp_flags & INP_HIGHPORT) {
424 first = V_ipport_hifirstauto; /* sysctl */
425 last = V_ipport_hilastauto;
426 lastport = &pcbinfo->ipi_lasthi;
427 } else if (inp->inp_flags & INP_LOWPORT) {
428 error = priv_check_cred(cred,
429 PRIV_NETINET_RESERVEDPORT, 0);
432 first = V_ipport_lowfirstauto; /* 1023 */
433 last = V_ipport_lowlastauto; /* 600 */
434 lastport = &pcbinfo->ipi_lastlow;
436 first = V_ipport_firstauto; /* sysctl */
437 last = V_ipport_lastauto;
438 lastport = &pcbinfo->ipi_lastport;
441 * For UDP, use random port allocation as long as the user
442 * allows it. For TCP (and as of yet unknown) connections,
443 * use random port allocation only if the user allows it AND
444 * ipport_tick() allows it.
446 if (V_ipport_randomized &&
447 (!V_ipport_stoprandom || pcbinfo == &V_udbinfo))
452 * It makes no sense to do random port allocation if
453 * we have the only port available.
457 /* Make sure to not include UDP packets in the count. */
458 if (pcbinfo != &V_udbinfo)
459 V_ipport_tcpallocs++;
461 * Instead of having two loops further down counting up or down
462 * make sure that first is always <= last and go with only one
463 * code path implementing all logic.
473 (arc4random() % (last - first));
475 count = last - first;
478 if (count-- < 0) /* completely used? */
479 return (EADDRNOTAVAIL);
481 if (*lastport < first || *lastport > last)
483 lport = htons(*lastport);
484 } while (in_pcblookup_local(pcbinfo, laddr,
487 *laddrp = laddr.s_addr;
493 * Connect from a socket to a specified address.
494 * Both address and port must be specified in argument sin.
495 * If don't have a local address for this socket yet,
499 in_pcbconnect(struct inpcb *inp, struct sockaddr *nam, struct ucred *cred)
501 u_short lport, fport;
502 in_addr_t laddr, faddr;
505 INP_INFO_WLOCK_ASSERT(inp->inp_pcbinfo);
506 INP_WLOCK_ASSERT(inp);
508 lport = inp->inp_lport;
509 laddr = inp->inp_laddr.s_addr;
510 anonport = (lport == 0);
511 error = in_pcbconnect_setup(inp, nam, &laddr, &lport, &faddr, &fport,
516 /* Do the initial binding of the local address if required. */
517 if (inp->inp_laddr.s_addr == INADDR_ANY && inp->inp_lport == 0) {
518 inp->inp_lport = lport;
519 inp->inp_laddr.s_addr = laddr;
520 if (in_pcbinshash(inp) != 0) {
521 inp->inp_laddr.s_addr = INADDR_ANY;
527 /* Commit the remaining changes. */
528 inp->inp_lport = lport;
529 inp->inp_laddr.s_addr = laddr;
530 inp->inp_faddr.s_addr = faddr;
531 inp->inp_fport = fport;
535 inp->inp_flags |= INP_ANONPORT;
540 * Do proper source address selection on an unbound socket in case
541 * of connect. Take jails into account as well.
544 in_pcbladdr(struct inpcb *inp, struct in_addr *faddr, struct in_addr *laddr,
549 struct sockaddr_in *sin;
553 KASSERT(laddr != NULL, ("%s: laddr NULL", __func__));
556 * Bypass source address selection and use the primary jail IP
559 if (cred != NULL && !prison_saddrsel_ip4(cred, laddr))
563 bzero(&sro, sizeof(sro));
565 sin = (struct sockaddr_in *)&sro.ro_dst;
566 sin->sin_family = AF_INET;
567 sin->sin_len = sizeof(struct sockaddr_in);
568 sin->sin_addr.s_addr = faddr->s_addr;
571 * If route is known our src addr is taken from the i/f,
574 * Find out route to destination.
576 if ((inp->inp_socket->so_options & SO_DONTROUTE) == 0)
577 in_rtalloc_ign(&sro, 0, inp->inp_inc.inc_fibnum);
580 * If we found a route, use the address corresponding to
581 * the outgoing interface.
583 * Otherwise assume faddr is reachable on a directly connected
584 * network and try to find a corresponding interface to take
585 * the source address from.
587 if (sro.ro_rt == NULL || sro.ro_rt->rt_ifp == NULL) {
588 struct in_ifaddr *ia;
591 ia = ifatoia(ifa_ifwithdstaddr((struct sockaddr *)sin));
593 ia = ifatoia(ifa_ifwithnet((struct sockaddr *)sin, 0));
599 if (cred == NULL || !prison_flag(cred, PR_IP4)) {
600 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
601 ifa_free(&ia->ia_ifa);
606 ifa_free(&ia->ia_ifa);
609 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
612 if (sa->sa_family != AF_INET)
614 sin = (struct sockaddr_in *)sa;
615 if (prison_check_ip4(cred, &sin->sin_addr) == 0) {
616 ia = (struct in_ifaddr *)ifa;
621 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
627 /* 3. As a last resort return the 'default' jail address. */
628 error = prison_get_ip4(cred, laddr);
633 * If the outgoing interface on the route found is not
634 * a loopback interface, use the address from that interface.
635 * In case of jails do those three steps:
636 * 1. check if the interface address belongs to the jail. If so use it.
637 * 2. check if we have any address on the outgoing interface
638 * belonging to this jail. If so use it.
639 * 3. as a last resort return the 'default' jail address.
641 if ((sro.ro_rt->rt_ifp->if_flags & IFF_LOOPBACK) == 0) {
642 struct in_ifaddr *ia;
645 /* If not jailed, use the default returned. */
646 if (cred == NULL || !prison_flag(cred, PR_IP4)) {
647 ia = (struct in_ifaddr *)sro.ro_rt->rt_ifa;
648 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
653 /* 1. Check if the iface address belongs to the jail. */
654 sin = (struct sockaddr_in *)sro.ro_rt->rt_ifa->ifa_addr;
655 if (prison_check_ip4(cred, &sin->sin_addr) == 0) {
656 ia = (struct in_ifaddr *)sro.ro_rt->rt_ifa;
657 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
662 * 2. Check if we have any address on the outgoing interface
663 * belonging to this jail.
666 ifp = sro.ro_rt->rt_ifp;
668 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
670 if (sa->sa_family != AF_INET)
672 sin = (struct sockaddr_in *)sa;
673 if (prison_check_ip4(cred, &sin->sin_addr) == 0) {
674 ia = (struct in_ifaddr *)ifa;
679 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
685 /* 3. As a last resort return the 'default' jail address. */
686 error = prison_get_ip4(cred, laddr);
691 * The outgoing interface is marked with 'loopback net', so a route
692 * to ourselves is here.
693 * Try to find the interface of the destination address and then
694 * take the address from there. That interface is not necessarily
695 * a loopback interface.
696 * In case of jails, check that it is an address of the jail
697 * and if we cannot find, fall back to the 'default' jail address.
699 if ((sro.ro_rt->rt_ifp->if_flags & IFF_LOOPBACK) != 0) {
700 struct sockaddr_in sain;
701 struct in_ifaddr *ia;
703 bzero(&sain, sizeof(struct sockaddr_in));
704 sain.sin_family = AF_INET;
705 sain.sin_len = sizeof(struct sockaddr_in);
706 sain.sin_addr.s_addr = faddr->s_addr;
708 ia = ifatoia(ifa_ifwithdstaddr(sintosa(&sain)));
710 ia = ifatoia(ifa_ifwithnet(sintosa(&sain), 0));
712 ia = ifatoia(ifa_ifwithaddr(sintosa(&sain)));
714 if (cred == NULL || !prison_flag(cred, PR_IP4)) {
719 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
720 ifa_free(&ia->ia_ifa);
729 ifa_free(&ia->ia_ifa);
732 TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
735 if (sa->sa_family != AF_INET)
737 sin = (struct sockaddr_in *)sa;
738 if (prison_check_ip4(cred,
739 &sin->sin_addr) == 0) {
740 ia = (struct in_ifaddr *)ifa;
745 laddr->s_addr = ia->ia_addr.sin_addr.s_addr;
752 /* 3. As a last resort return the 'default' jail address. */
753 error = prison_get_ip4(cred, laddr);
758 if (sro.ro_rt != NULL)
764 * Set up for a connect from a socket to the specified address.
765 * On entry, *laddrp and *lportp should contain the current local
766 * address and port for the PCB; these are updated to the values
767 * that should be placed in inp_laddr and inp_lport to complete
770 * On success, *faddrp and *fportp will be set to the remote address
771 * and port. These are not updated in the error case.
773 * If the operation fails because the connection already exists,
774 * *oinpp will be set to the PCB of that connection so that the
775 * caller can decide to override it. In all other cases, *oinpp
779 in_pcbconnect_setup(struct inpcb *inp, struct sockaddr *nam,
780 in_addr_t *laddrp, u_short *lportp, in_addr_t *faddrp, u_short *fportp,
781 struct inpcb **oinpp, struct ucred *cred)
783 struct sockaddr_in *sin = (struct sockaddr_in *)nam;
784 struct in_ifaddr *ia;
786 struct in_addr laddr, faddr;
787 u_short lport, fport;
791 * Because a global state change doesn't actually occur here, a read
792 * lock is sufficient.
794 INP_INFO_LOCK_ASSERT(inp->inp_pcbinfo);
795 INP_LOCK_ASSERT(inp);
799 if (nam->sa_len != sizeof (*sin))
801 if (sin->sin_family != AF_INET)
802 return (EAFNOSUPPORT);
803 if (sin->sin_port == 0)
804 return (EADDRNOTAVAIL);
805 laddr.s_addr = *laddrp;
807 faddr = sin->sin_addr;
808 fport = sin->sin_port;
810 if (!TAILQ_EMPTY(&V_in_ifaddrhead)) {
812 * If the destination address is INADDR_ANY,
813 * use the primary local address.
814 * If the supplied address is INADDR_BROADCAST,
815 * and the primary interface supports broadcast,
816 * choose the broadcast address for that interface.
818 if (faddr.s_addr == INADDR_ANY) {
821 IA_SIN(TAILQ_FIRST(&V_in_ifaddrhead))->sin_addr;
824 (error = prison_get_ip4(cred, &faddr)) != 0)
826 } else if (faddr.s_addr == (u_long)INADDR_BROADCAST) {
828 if (TAILQ_FIRST(&V_in_ifaddrhead)->ia_ifp->if_flags &
830 faddr = satosin(&TAILQ_FIRST(
831 &V_in_ifaddrhead)->ia_broadaddr)->sin_addr;
835 if (laddr.s_addr == INADDR_ANY) {
837 * If the destination address is multicast and an outgoing
838 * interface has been set as a multicast option, use the
839 * address of that interface as our source address.
841 if (IN_MULTICAST(ntohl(faddr.s_addr)) &&
842 inp->inp_moptions != NULL) {
843 struct ip_moptions *imo;
846 imo = inp->inp_moptions;
847 if (imo->imo_multicast_ifp != NULL) {
848 ifp = imo->imo_multicast_ifp;
850 TAILQ_FOREACH(ia, &V_in_ifaddrhead, ia_link)
851 if (ia->ia_ifp == ifp)
855 return (EADDRNOTAVAIL);
857 laddr = ia->ia_addr.sin_addr;
861 error = in_pcbladdr(inp, &faddr, &laddr, cred);
866 oinp = in_pcblookup_hash(inp->inp_pcbinfo, faddr, fport, laddr, lport,
874 error = in_pcbbind_setup(inp, NULL, &laddr.s_addr, &lport,
879 *laddrp = laddr.s_addr;
881 *faddrp = faddr.s_addr;
887 in_pcbdisconnect(struct inpcb *inp)
890 INP_INFO_WLOCK_ASSERT(inp->inp_pcbinfo);
891 INP_WLOCK_ASSERT(inp);
893 inp->inp_faddr.s_addr = INADDR_ANY;
899 * in_pcbdetach() is responsibe for disassociating a socket from an inpcb.
900 * For most protocols, this will be invoked immediately prior to calling
901 * in_pcbfree(). However, with TCP the inpcb may significantly outlive the
902 * socket, in which case in_pcbfree() is deferred.
905 in_pcbdetach(struct inpcb *inp)
908 KASSERT(inp->inp_socket != NULL, ("%s: inp_socket == NULL", __func__));
910 inp->inp_socket->so_pcb = NULL;
911 inp->inp_socket = NULL;
915 * in_pcbfree_internal() frees an inpcb that has been detached from its
916 * socket, and whose reference count has reached 0. It will also remove the
917 * inpcb from any global lists it might remain on.
920 in_pcbfree_internal(struct inpcb *inp)
922 struct inpcbinfo *ipi = inp->inp_pcbinfo;
924 KASSERT(inp->inp_socket == NULL, ("%s: inp_socket != NULL", __func__));
925 KASSERT(inp->inp_refcount == 0, ("%s: refcount !0", __func__));
927 INP_INFO_WLOCK_ASSERT(ipi);
928 INP_WLOCK_ASSERT(inp);
931 if (inp->inp_sp != NULL)
932 ipsec_delete_pcbpolicy(inp);
934 inp->inp_gencnt = ++ipi->ipi_gencnt;
937 if (inp->inp_vflag & INP_IPV6PROTO) {
938 ip6_freepcbopts(inp->in6p_outputopts);
939 if (inp->in6p_moptions != NULL)
940 ip6_freemoptions(inp->in6p_moptions);
943 if (inp->inp_options)
944 (void)m_free(inp->inp_options);
945 if (inp->inp_moptions != NULL)
946 inp_freemoptions(inp->inp_moptions);
948 crfree(inp->inp_cred);
951 mac_inpcb_destroy(inp);
954 uma_zfree(ipi->ipi_zone, inp);
958 * in_pcbref() bumps the reference count on an inpcb in order to maintain
959 * stability of an inpcb pointer despite the inpcb lock being released. This
960 * is used in TCP when the inpcbinfo lock needs to be acquired or upgraded,
961 * but where the inpcb lock is already held.
963 * While the inpcb will not be freed, releasing the inpcb lock means that the
964 * connection's state may change, so the caller should be careful to
965 * revalidate any cached state on reacquiring the lock. Drop the reference
966 * using in_pcbrele().
969 in_pcbref(struct inpcb *inp)
972 INP_WLOCK_ASSERT(inp);
974 KASSERT(inp->inp_refcount > 0, ("%s: refcount 0", __func__));
980 * Drop a refcount on an inpcb elevated using in_pcbref(); because a call to
981 * in_pcbfree() may have been made between in_pcbref() and in_pcbrele(), we
982 * return a flag indicating whether or not the inpcb remains valid. If it is
983 * valid, we return with the inpcb lock held.
986 in_pcbrele(struct inpcb *inp)
989 struct inpcbinfo *ipi = inp->inp_pcbinfo;
992 KASSERT(inp->inp_refcount > 0, ("%s: refcount 0", __func__));
994 INP_INFO_WLOCK_ASSERT(ipi);
995 INP_WLOCK_ASSERT(inp);
998 if (inp->inp_refcount > 0)
1000 in_pcbfree_internal(inp);
1005 * Unconditionally schedule an inpcb to be freed by decrementing its
1006 * reference count, which should occur only after the inpcb has been detached
1007 * from its socket. If another thread holds a temporary reference (acquired
1008 * using in_pcbref()) then the free is deferred until that reference is
1009 * released using in_pcbrele(), but the inpcb is still unlocked.
1012 in_pcbfree(struct inpcb *inp)
1015 struct inpcbinfo *ipi = inp->inp_pcbinfo;
1018 KASSERT(inp->inp_socket == NULL, ("%s: inp_socket != NULL",
1021 INP_INFO_WLOCK_ASSERT(ipi);
1022 INP_WLOCK_ASSERT(inp);
1024 if (!in_pcbrele(inp))
1029 * in_pcbdrop() removes an inpcb from hashed lists, releasing its address and
1030 * port reservation, and preventing it from being returned by inpcb lookups.
1032 * It is used by TCP to mark an inpcb as unused and avoid future packet
1033 * delivery or event notification when a socket remains open but TCP has
1034 * closed. This might occur as a result of a shutdown()-initiated TCP close
1035 * or a RST on the wire, and allows the port binding to be reused while still
1036 * maintaining the invariant that so_pcb always points to a valid inpcb until
1039 * XXXRW: An inp_lport of 0 is used to indicate that the inpcb is not on hash
1040 * lists, but can lead to confusing netstat output, as open sockets with
1041 * closed TCP connections will no longer appear to have their bound port
1042 * number. An explicit flag would be better, as it would allow us to leave
1043 * the port number intact after the connection is dropped.
1045 * XXXRW: Possibly in_pcbdrop() should also prevent future notifications by
1046 * in_pcbnotifyall() and in_pcbpurgeif0()?
1049 in_pcbdrop(struct inpcb *inp)
1052 INP_INFO_WLOCK_ASSERT(inp->inp_pcbinfo);
1053 INP_WLOCK_ASSERT(inp);
1055 inp->inp_flags |= INP_DROPPED;
1056 if (inp->inp_flags & INP_INHASHLIST) {
1057 struct inpcbport *phd = inp->inp_phd;
1059 LIST_REMOVE(inp, inp_hash);
1060 LIST_REMOVE(inp, inp_portlist);
1061 if (LIST_FIRST(&phd->phd_pcblist) == NULL) {
1062 LIST_REMOVE(phd, phd_hash);
1065 inp->inp_flags &= ~INP_INHASHLIST;
1070 * Common routines to return the socket addresses associated with inpcbs.
1073 in_sockaddr(in_port_t port, struct in_addr *addr_p)
1075 struct sockaddr_in *sin;
1077 sin = malloc(sizeof *sin, M_SONAME,
1079 sin->sin_family = AF_INET;
1080 sin->sin_len = sizeof(*sin);
1081 sin->sin_addr = *addr_p;
1082 sin->sin_port = port;
1084 return (struct sockaddr *)sin;
1088 in_getsockaddr(struct socket *so, struct sockaddr **nam)
1091 struct in_addr addr;
1094 inp = sotoinpcb(so);
1095 KASSERT(inp != NULL, ("in_getsockaddr: inp == NULL"));
1098 port = inp->inp_lport;
1099 addr = inp->inp_laddr;
1102 *nam = in_sockaddr(port, &addr);
1107 in_getpeeraddr(struct socket *so, struct sockaddr **nam)
1110 struct in_addr addr;
1113 inp = sotoinpcb(so);
1114 KASSERT(inp != NULL, ("in_getpeeraddr: inp == NULL"));
1117 port = inp->inp_fport;
1118 addr = inp->inp_faddr;
1121 *nam = in_sockaddr(port, &addr);
1126 in_pcbnotifyall(struct inpcbinfo *pcbinfo, struct in_addr faddr, int errno,
1127 struct inpcb *(*notify)(struct inpcb *, int))
1129 struct inpcb *inp, *inp_temp;
1131 INP_INFO_WLOCK(pcbinfo);
1132 LIST_FOREACH_SAFE(inp, pcbinfo->ipi_listhead, inp_list, inp_temp) {
1135 if ((inp->inp_vflag & INP_IPV4) == 0) {
1140 if (inp->inp_faddr.s_addr != faddr.s_addr ||
1141 inp->inp_socket == NULL) {
1145 if ((*notify)(inp, errno))
1148 INP_INFO_WUNLOCK(pcbinfo);
1152 in_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp)
1155 struct ip_moptions *imo;
1158 INP_INFO_RLOCK(pcbinfo);
1159 LIST_FOREACH(inp, pcbinfo->ipi_listhead, inp_list) {
1161 imo = inp->inp_moptions;
1162 if ((inp->inp_vflag & INP_IPV4) &&
1165 * Unselect the outgoing interface if it is being
1168 if (imo->imo_multicast_ifp == ifp)
1169 imo->imo_multicast_ifp = NULL;
1172 * Drop multicast group membership if we joined
1173 * through the interface being detached.
1175 for (i = 0, gap = 0; i < imo->imo_num_memberships;
1177 if (imo->imo_membership[i]->inm_ifp == ifp) {
1178 in_delmulti(imo->imo_membership[i]);
1180 } else if (gap != 0)
1181 imo->imo_membership[i - gap] =
1182 imo->imo_membership[i];
1184 imo->imo_num_memberships -= gap;
1188 INP_INFO_RUNLOCK(pcbinfo);
1192 * Lookup a PCB based on the local address and port.
1194 #define INP_LOOKUP_MAPPED_PCB_COST 3
1196 in_pcblookup_local(struct inpcbinfo *pcbinfo, struct in_addr laddr,
1197 u_short lport, int wild_okay, struct ucred *cred)
1201 int matchwild = 3 + INP_LOOKUP_MAPPED_PCB_COST;
1207 INP_INFO_LOCK_ASSERT(pcbinfo);
1210 struct inpcbhead *head;
1212 * Look for an unconnected (wildcard foreign addr) PCB that
1213 * matches the local address and port we're looking for.
1215 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(INADDR_ANY, lport,
1216 0, pcbinfo->ipi_hashmask)];
1217 LIST_FOREACH(inp, head, inp_hash) {
1219 /* XXX inp locking */
1220 if ((inp->inp_vflag & INP_IPV4) == 0)
1223 if (inp->inp_faddr.s_addr == INADDR_ANY &&
1224 inp->inp_laddr.s_addr == laddr.s_addr &&
1225 inp->inp_lport == lport) {
1230 prison_equal_ip4(cred->cr_prison,
1231 inp->inp_cred->cr_prison))
1240 struct inpcbporthead *porthash;
1241 struct inpcbport *phd;
1242 struct inpcb *match = NULL;
1244 * Best fit PCB lookup.
1246 * First see if this local port is in use by looking on the
1249 porthash = &pcbinfo->ipi_porthashbase[INP_PCBPORTHASH(lport,
1250 pcbinfo->ipi_porthashmask)];
1251 LIST_FOREACH(phd, porthash, phd_hash) {
1252 if (phd->phd_port == lport)
1257 * Port is in use by one or more PCBs. Look for best
1260 LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) {
1263 !prison_equal_ip4(inp->inp_cred->cr_prison,
1267 /* XXX inp locking */
1268 if ((inp->inp_vflag & INP_IPV4) == 0)
1271 * We never select the PCB that has
1272 * INP_IPV6 flag and is bound to :: if
1273 * we have another PCB which is bound
1274 * to 0.0.0.0. If a PCB has the
1275 * INP_IPV6 flag, then we set its cost
1276 * higher than IPv4 only PCBs.
1278 * Note that the case only happens
1279 * when a socket is bound to ::, under
1280 * the condition that the use of the
1281 * mapped address is allowed.
1283 if ((inp->inp_vflag & INP_IPV6) != 0)
1284 wildcard += INP_LOOKUP_MAPPED_PCB_COST;
1286 if (inp->inp_faddr.s_addr != INADDR_ANY)
1288 if (inp->inp_laddr.s_addr != INADDR_ANY) {
1289 if (laddr.s_addr == INADDR_ANY)
1291 else if (inp->inp_laddr.s_addr != laddr.s_addr)
1294 if (laddr.s_addr != INADDR_ANY)
1297 if (wildcard < matchwild) {
1299 matchwild = wildcard;
1308 #undef INP_LOOKUP_MAPPED_PCB_COST
1311 * Lookup PCB in hash list.
1314 in_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in_addr faddr,
1315 u_int fport_arg, struct in_addr laddr, u_int lport_arg, int wildcard,
1318 struct inpcbhead *head;
1319 struct inpcb *inp, *tmpinp;
1320 u_short fport = fport_arg, lport = lport_arg;
1322 INP_INFO_LOCK_ASSERT(pcbinfo);
1325 * First look for an exact match.
1328 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(faddr.s_addr, lport, fport,
1329 pcbinfo->ipi_hashmask)];
1330 LIST_FOREACH(inp, head, inp_hash) {
1332 /* XXX inp locking */
1333 if ((inp->inp_vflag & INP_IPV4) == 0)
1336 if (inp->inp_faddr.s_addr == faddr.s_addr &&
1337 inp->inp_laddr.s_addr == laddr.s_addr &&
1338 inp->inp_fport == fport &&
1339 inp->inp_lport == lport) {
1341 * XXX We should be able to directly return
1342 * the inp here, without any checks.
1343 * Well unless both bound with SO_REUSEPORT?
1345 if (prison_flag(inp->inp_cred, PR_IP4))
1355 * Then look for a wildcard match, if requested.
1357 if (wildcard == INPLOOKUP_WILDCARD) {
1358 struct inpcb *local_wild = NULL, *local_exact = NULL;
1360 struct inpcb *local_wild_mapped = NULL;
1362 struct inpcb *jail_wild = NULL;
1366 * Order of socket selection - we always prefer jails.
1367 * 1. jailed, non-wild.
1369 * 3. non-jailed, non-wild.
1370 * 4. non-jailed, wild.
1373 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(INADDR_ANY, lport,
1374 0, pcbinfo->ipi_hashmask)];
1375 LIST_FOREACH(inp, head, inp_hash) {
1377 /* XXX inp locking */
1378 if ((inp->inp_vflag & INP_IPV4) == 0)
1381 if (inp->inp_faddr.s_addr != INADDR_ANY ||
1382 inp->inp_lport != lport)
1385 /* XXX inp locking */
1386 if (ifp && ifp->if_type == IFT_FAITH &&
1387 (inp->inp_flags & INP_FAITH) == 0)
1390 injail = prison_flag(inp->inp_cred, PR_IP4);
1392 if (prison_check_ip4(inp->inp_cred,
1396 if (local_exact != NULL)
1400 if (inp->inp_laddr.s_addr == laddr.s_addr) {
1405 } else if (inp->inp_laddr.s_addr == INADDR_ANY) {
1407 /* XXX inp locking, NULL check */
1408 if (inp->inp_vflag & INP_IPV6PROTO)
1409 local_wild_mapped = inp;
1417 } /* LIST_FOREACH */
1418 if (jail_wild != NULL)
1420 if (local_exact != NULL)
1421 return (local_exact);
1422 if (local_wild != NULL)
1423 return (local_wild);
1425 if (local_wild_mapped != NULL)
1426 return (local_wild_mapped);
1427 #endif /* defined(INET6) */
1428 } /* if (wildcard == INPLOOKUP_WILDCARD) */
1434 * Insert PCB onto various hash lists.
1437 in_pcbinshash(struct inpcb *inp)
1439 struct inpcbhead *pcbhash;
1440 struct inpcbporthead *pcbporthash;
1441 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
1442 struct inpcbport *phd;
1443 u_int32_t hashkey_faddr;
1445 INP_INFO_WLOCK_ASSERT(pcbinfo);
1446 INP_WLOCK_ASSERT(inp);
1447 KASSERT((inp->inp_flags & INP_INHASHLIST) == 0,
1448 ("in_pcbinshash: INP_INHASHLIST"));
1451 if (inp->inp_vflag & INP_IPV6)
1452 hashkey_faddr = inp->in6p_faddr.s6_addr32[3] /* XXX */;
1455 hashkey_faddr = inp->inp_faddr.s_addr;
1457 pcbhash = &pcbinfo->ipi_hashbase[INP_PCBHASH(hashkey_faddr,
1458 inp->inp_lport, inp->inp_fport, pcbinfo->ipi_hashmask)];
1460 pcbporthash = &pcbinfo->ipi_porthashbase[
1461 INP_PCBPORTHASH(inp->inp_lport, pcbinfo->ipi_porthashmask)];
1464 * Go through port list and look for a head for this lport.
1466 LIST_FOREACH(phd, pcbporthash, phd_hash) {
1467 if (phd->phd_port == inp->inp_lport)
1471 * If none exists, malloc one and tack it on.
1474 phd = malloc(sizeof(struct inpcbport), M_PCB, M_NOWAIT);
1476 return (ENOBUFS); /* XXX */
1478 phd->phd_port = inp->inp_lport;
1479 LIST_INIT(&phd->phd_pcblist);
1480 LIST_INSERT_HEAD(pcbporthash, phd, phd_hash);
1483 LIST_INSERT_HEAD(&phd->phd_pcblist, inp, inp_portlist);
1484 LIST_INSERT_HEAD(pcbhash, inp, inp_hash);
1485 inp->inp_flags |= INP_INHASHLIST;
1490 * Move PCB to the proper hash bucket when { faddr, fport } have been
1491 * changed. NOTE: This does not handle the case of the lport changing (the
1492 * hashed port list would have to be updated as well), so the lport must
1493 * not change after in_pcbinshash() has been called.
1496 in_pcbrehash(struct inpcb *inp)
1498 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
1499 struct inpcbhead *head;
1500 u_int32_t hashkey_faddr;
1502 INP_INFO_WLOCK_ASSERT(pcbinfo);
1503 INP_WLOCK_ASSERT(inp);
1504 KASSERT(inp->inp_flags & INP_INHASHLIST,
1505 ("in_pcbrehash: !INP_INHASHLIST"));
1508 if (inp->inp_vflag & INP_IPV6)
1509 hashkey_faddr = inp->in6p_faddr.s6_addr32[3] /* XXX */;
1512 hashkey_faddr = inp->inp_faddr.s_addr;
1514 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(hashkey_faddr,
1515 inp->inp_lport, inp->inp_fport, pcbinfo->ipi_hashmask)];
1517 LIST_REMOVE(inp, inp_hash);
1518 LIST_INSERT_HEAD(head, inp, inp_hash);
1522 * Remove PCB from various lists.
1525 in_pcbremlists(struct inpcb *inp)
1527 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
1529 INP_INFO_WLOCK_ASSERT(pcbinfo);
1530 INP_WLOCK_ASSERT(inp);
1532 inp->inp_gencnt = ++pcbinfo->ipi_gencnt;
1533 if (inp->inp_flags & INP_INHASHLIST) {
1534 struct inpcbport *phd = inp->inp_phd;
1536 LIST_REMOVE(inp, inp_hash);
1537 LIST_REMOVE(inp, inp_portlist);
1538 if (LIST_FIRST(&phd->phd_pcblist) == NULL) {
1539 LIST_REMOVE(phd, phd_hash);
1542 inp->inp_flags &= ~INP_INHASHLIST;
1544 LIST_REMOVE(inp, inp_list);
1545 pcbinfo->ipi_count--;
1549 * A set label operation has occurred at the socket layer, propagate the
1550 * label change into the in_pcb for the socket.
1553 in_pcbsosetlabel(struct socket *so)
1558 inp = sotoinpcb(so);
1559 KASSERT(inp != NULL, ("in_pcbsosetlabel: so->so_pcb == NULL"));
1563 mac_inpcb_sosetlabel(so, inp);
1570 * ipport_tick runs once per second, determining if random port allocation
1571 * should be continued. If more than ipport_randomcps ports have been
1572 * allocated in the last second, then we return to sequential port
1573 * allocation. We return to random allocation only once we drop below
1574 * ipport_randomcps for at least ipport_randomtime seconds.
1577 ipport_tick(void *xtp)
1579 VNET_ITERATOR_DECL(vnet_iter);
1581 VNET_LIST_RLOCK_NOSLEEP();
1582 VNET_FOREACH(vnet_iter) {
1583 CURVNET_SET(vnet_iter); /* XXX appease INVARIANTS here */
1584 if (V_ipport_tcpallocs <=
1585 V_ipport_tcplastcount + V_ipport_randomcps) {
1586 if (V_ipport_stoprandom > 0)
1587 V_ipport_stoprandom--;
1589 V_ipport_stoprandom = V_ipport_randomtime;
1590 V_ipport_tcplastcount = V_ipport_tcpallocs;
1593 VNET_LIST_RUNLOCK_NOSLEEP();
1594 callout_reset(&ipport_tick_callout, hz, ipport_tick, NULL);
1598 inp_wlock(struct inpcb *inp)
1605 inp_wunlock(struct inpcb *inp)
1612 inp_rlock(struct inpcb *inp)
1619 inp_runlock(struct inpcb *inp)
1627 inp_lock_assert(struct inpcb *inp)
1630 INP_WLOCK_ASSERT(inp);
1634 inp_unlock_assert(struct inpcb *inp)
1637 INP_UNLOCK_ASSERT(inp);
1642 inp_apply_all(void (*func)(struct inpcb *, void *), void *arg)
1646 INP_INFO_RLOCK(&V_tcbinfo);
1647 LIST_FOREACH(inp, V_tcbinfo.ipi_listhead, inp_list) {
1652 INP_INFO_RUNLOCK(&V_tcbinfo);
1656 inp_inpcbtosocket(struct inpcb *inp)
1659 INP_WLOCK_ASSERT(inp);
1660 return (inp->inp_socket);
1664 inp_inpcbtotcpcb(struct inpcb *inp)
1667 INP_WLOCK_ASSERT(inp);
1668 return ((struct tcpcb *)inp->inp_ppcb);
1672 inp_ip_tos_get(const struct inpcb *inp)
1675 return (inp->inp_ip_tos);
1679 inp_ip_tos_set(struct inpcb *inp, int val)
1682 inp->inp_ip_tos = val;
1686 inp_4tuple_get(struct inpcb *inp, uint32_t *laddr, uint16_t *lp,
1687 uint32_t *faddr, uint16_t *fp)
1690 INP_LOCK_ASSERT(inp);
1691 *laddr = inp->inp_laddr.s_addr;
1692 *faddr = inp->inp_faddr.s_addr;
1693 *lp = inp->inp_lport;
1694 *fp = inp->inp_fport;
1698 so_sotoinpcb(struct socket *so)
1701 return (sotoinpcb(so));
1705 so_sototcpcb(struct socket *so)
1708 return (sototcpcb(so));
1713 db_print_indent(int indent)
1717 for (i = 0; i < indent; i++)
1722 db_print_inconninfo(struct in_conninfo *inc, const char *name, int indent)
1724 char faddr_str[48], laddr_str[48];
1726 db_print_indent(indent);
1727 db_printf("%s at %p\n", name, inc);
1732 if (inc->inc_flags & INC_ISIPV6) {
1734 ip6_sprintf(laddr_str, &inc->inc6_laddr);
1735 ip6_sprintf(faddr_str, &inc->inc6_faddr);
1739 inet_ntoa_r(inc->inc_laddr, laddr_str);
1740 inet_ntoa_r(inc->inc_faddr, faddr_str);
1744 db_print_indent(indent);
1745 db_printf("inc_laddr %s inc_lport %u\n", laddr_str,
1746 ntohs(inc->inc_lport));
1747 db_print_indent(indent);
1748 db_printf("inc_faddr %s inc_fport %u\n", faddr_str,
1749 ntohs(inc->inc_fport));
1753 db_print_inpflags(int inp_flags)
1758 if (inp_flags & INP_RECVOPTS) {
1759 db_printf("%sINP_RECVOPTS", comma ? ", " : "");
1762 if (inp_flags & INP_RECVRETOPTS) {
1763 db_printf("%sINP_RECVRETOPTS", comma ? ", " : "");
1766 if (inp_flags & INP_RECVDSTADDR) {
1767 db_printf("%sINP_RECVDSTADDR", comma ? ", " : "");
1770 if (inp_flags & INP_HDRINCL) {
1771 db_printf("%sINP_HDRINCL", comma ? ", " : "");
1774 if (inp_flags & INP_HIGHPORT) {
1775 db_printf("%sINP_HIGHPORT", comma ? ", " : "");
1778 if (inp_flags & INP_LOWPORT) {
1779 db_printf("%sINP_LOWPORT", comma ? ", " : "");
1782 if (inp_flags & INP_ANONPORT) {
1783 db_printf("%sINP_ANONPORT", comma ? ", " : "");
1786 if (inp_flags & INP_RECVIF) {
1787 db_printf("%sINP_RECVIF", comma ? ", " : "");
1790 if (inp_flags & INP_MTUDISC) {
1791 db_printf("%sINP_MTUDISC", comma ? ", " : "");
1794 if (inp_flags & INP_FAITH) {
1795 db_printf("%sINP_FAITH", comma ? ", " : "");
1798 if (inp_flags & INP_RECVTTL) {
1799 db_printf("%sINP_RECVTTL", comma ? ", " : "");
1802 if (inp_flags & INP_DONTFRAG) {
1803 db_printf("%sINP_DONTFRAG", comma ? ", " : "");
1806 if (inp_flags & IN6P_IPV6_V6ONLY) {
1807 db_printf("%sIN6P_IPV6_V6ONLY", comma ? ", " : "");
1810 if (inp_flags & IN6P_PKTINFO) {
1811 db_printf("%sIN6P_PKTINFO", comma ? ", " : "");
1814 if (inp_flags & IN6P_HOPLIMIT) {
1815 db_printf("%sIN6P_HOPLIMIT", comma ? ", " : "");
1818 if (inp_flags & IN6P_HOPOPTS) {
1819 db_printf("%sIN6P_HOPOPTS", comma ? ", " : "");
1822 if (inp_flags & IN6P_DSTOPTS) {
1823 db_printf("%sIN6P_DSTOPTS", comma ? ", " : "");
1826 if (inp_flags & IN6P_RTHDR) {
1827 db_printf("%sIN6P_RTHDR", comma ? ", " : "");
1830 if (inp_flags & IN6P_RTHDRDSTOPTS) {
1831 db_printf("%sIN6P_RTHDRDSTOPTS", comma ? ", " : "");
1834 if (inp_flags & IN6P_TCLASS) {
1835 db_printf("%sIN6P_TCLASS", comma ? ", " : "");
1838 if (inp_flags & IN6P_AUTOFLOWLABEL) {
1839 db_printf("%sIN6P_AUTOFLOWLABEL", comma ? ", " : "");
1842 if (inp_flags & INP_TIMEWAIT) {
1843 db_printf("%sINP_TIMEWAIT", comma ? ", " : "");
1846 if (inp_flags & INP_ONESBCAST) {
1847 db_printf("%sINP_ONESBCAST", comma ? ", " : "");
1850 if (inp_flags & INP_DROPPED) {
1851 db_printf("%sINP_DROPPED", comma ? ", " : "");
1854 if (inp_flags & INP_SOCKREF) {
1855 db_printf("%sINP_SOCKREF", comma ? ", " : "");
1858 if (inp_flags & IN6P_RFC2292) {
1859 db_printf("%sIN6P_RFC2292", comma ? ", " : "");
1862 if (inp_flags & IN6P_MTU) {
1863 db_printf("IN6P_MTU%s", comma ? ", " : "");
1869 db_print_inpvflag(u_char inp_vflag)
1874 if (inp_vflag & INP_IPV4) {
1875 db_printf("%sINP_IPV4", comma ? ", " : "");
1878 if (inp_vflag & INP_IPV6) {
1879 db_printf("%sINP_IPV6", comma ? ", " : "");
1882 if (inp_vflag & INP_IPV6PROTO) {
1883 db_printf("%sINP_IPV6PROTO", comma ? ", " : "");
1889 db_print_inpcb(struct inpcb *inp, const char *name, int indent)
1892 db_print_indent(indent);
1893 db_printf("%s at %p\n", name, inp);
1897 db_print_indent(indent);
1898 db_printf("inp_flow: 0x%x\n", inp->inp_flow);
1900 db_print_inconninfo(&inp->inp_inc, "inp_conninfo", indent);
1902 db_print_indent(indent);
1903 db_printf("inp_ppcb: %p inp_pcbinfo: %p inp_socket: %p\n",
1904 inp->inp_ppcb, inp->inp_pcbinfo, inp->inp_socket);
1906 db_print_indent(indent);
1907 db_printf("inp_label: %p inp_flags: 0x%x (",
1908 inp->inp_label, inp->inp_flags);
1909 db_print_inpflags(inp->inp_flags);
1912 db_print_indent(indent);
1913 db_printf("inp_sp: %p inp_vflag: 0x%x (", inp->inp_sp,
1915 db_print_inpvflag(inp->inp_vflag);
1918 db_print_indent(indent);
1919 db_printf("inp_ip_ttl: %d inp_ip_p: %d inp_ip_minttl: %d\n",
1920 inp->inp_ip_ttl, inp->inp_ip_p, inp->inp_ip_minttl);
1922 db_print_indent(indent);
1924 if (inp->inp_vflag & INP_IPV6) {
1925 db_printf("in6p_options: %p in6p_outputopts: %p "
1926 "in6p_moptions: %p\n", inp->in6p_options,
1927 inp->in6p_outputopts, inp->in6p_moptions);
1928 db_printf("in6p_icmp6filt: %p in6p_cksum %d "
1929 "in6p_hops %u\n", inp->in6p_icmp6filt, inp->in6p_cksum,
1934 db_printf("inp_ip_tos: %d inp_ip_options: %p "
1935 "inp_ip_moptions: %p\n", inp->inp_ip_tos,
1936 inp->inp_options, inp->inp_moptions);
1939 db_print_indent(indent);
1940 db_printf("inp_phd: %p inp_gencnt: %ju\n", inp->inp_phd,
1941 (uintmax_t)inp->inp_gencnt);
1944 DB_SHOW_COMMAND(inpcb, db_show_inpcb)
1949 db_printf("usage: show inpcb <addr>\n");
1952 inp = (struct inpcb *)addr;
1954 db_print_inpcb(inp, "inpcb", 0);