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));
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)));
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) {
836 error = in_pcbladdr(inp, &faddr, &laddr, cred);
841 * If the destination address is multicast and an outgoing
842 * interface has been set as a multicast option, use the
843 * address of that interface as our source address.
845 if (IN_MULTICAST(ntohl(faddr.s_addr)) &&
846 inp->inp_moptions != NULL) {
847 struct ip_moptions *imo;
850 imo = inp->inp_moptions;
851 if (imo->imo_multicast_ifp != NULL) {
852 ifp = imo->imo_multicast_ifp;
854 TAILQ_FOREACH(ia, &V_in_ifaddrhead, ia_link)
855 if (ia->ia_ifp == ifp)
859 return (EADDRNOTAVAIL);
861 laddr = ia->ia_addr.sin_addr;
867 oinp = in_pcblookup_hash(inp->inp_pcbinfo, faddr, fport, laddr, lport,
875 error = in_pcbbind_setup(inp, NULL, &laddr.s_addr, &lport,
880 *laddrp = laddr.s_addr;
882 *faddrp = faddr.s_addr;
888 in_pcbdisconnect(struct inpcb *inp)
891 INP_INFO_WLOCK_ASSERT(inp->inp_pcbinfo);
892 INP_WLOCK_ASSERT(inp);
894 inp->inp_faddr.s_addr = INADDR_ANY;
900 * in_pcbdetach() is responsibe for disassociating a socket from an inpcb.
901 * For most protocols, this will be invoked immediately prior to calling
902 * in_pcbfree(). However, with TCP the inpcb may significantly outlive the
903 * socket, in which case in_pcbfree() is deferred.
906 in_pcbdetach(struct inpcb *inp)
909 KASSERT(inp->inp_socket != NULL, ("%s: inp_socket == NULL", __func__));
911 inp->inp_socket->so_pcb = NULL;
912 inp->inp_socket = NULL;
916 * in_pcbfree_internal() frees an inpcb that has been detached from its
917 * socket, and whose reference count has reached 0. It will also remove the
918 * inpcb from any global lists it might remain on.
921 in_pcbfree_internal(struct inpcb *inp)
923 struct inpcbinfo *ipi = inp->inp_pcbinfo;
925 KASSERT(inp->inp_socket == NULL, ("%s: inp_socket != NULL", __func__));
926 KASSERT(inp->inp_refcount == 0, ("%s: refcount !0", __func__));
928 INP_INFO_WLOCK_ASSERT(ipi);
929 INP_WLOCK_ASSERT(inp);
932 if (inp->inp_sp != NULL)
933 ipsec_delete_pcbpolicy(inp);
935 inp->inp_gencnt = ++ipi->ipi_gencnt;
938 if (inp->inp_vflag & INP_IPV6PROTO) {
939 ip6_freepcbopts(inp->in6p_outputopts);
940 if (inp->in6p_moptions != NULL)
941 ip6_freemoptions(inp->in6p_moptions);
944 if (inp->inp_options)
945 (void)m_free(inp->inp_options);
946 if (inp->inp_moptions != NULL)
947 inp_freemoptions(inp->inp_moptions);
949 crfree(inp->inp_cred);
952 mac_inpcb_destroy(inp);
955 uma_zfree(ipi->ipi_zone, inp);
959 * in_pcbref() bumps the reference count on an inpcb in order to maintain
960 * stability of an inpcb pointer despite the inpcb lock being released. This
961 * is used in TCP when the inpcbinfo lock needs to be acquired or upgraded,
962 * but where the inpcb lock is already held.
964 * While the inpcb will not be freed, releasing the inpcb lock means that the
965 * connection's state may change, so the caller should be careful to
966 * revalidate any cached state on reacquiring the lock. Drop the reference
967 * using in_pcbrele().
970 in_pcbref(struct inpcb *inp)
973 INP_WLOCK_ASSERT(inp);
975 KASSERT(inp->inp_refcount > 0, ("%s: refcount 0", __func__));
981 * Drop a refcount on an inpcb elevated using in_pcbref(); because a call to
982 * in_pcbfree() may have been made between in_pcbref() and in_pcbrele(), we
983 * return a flag indicating whether or not the inpcb remains valid. If it is
984 * valid, we return with the inpcb lock held.
987 in_pcbrele(struct inpcb *inp)
990 struct inpcbinfo *ipi = inp->inp_pcbinfo;
993 KASSERT(inp->inp_refcount > 0, ("%s: refcount 0", __func__));
995 INP_INFO_WLOCK_ASSERT(ipi);
996 INP_WLOCK_ASSERT(inp);
999 if (inp->inp_refcount > 0)
1001 in_pcbfree_internal(inp);
1006 * Unconditionally schedule an inpcb to be freed by decrementing its
1007 * reference count, which should occur only after the inpcb has been detached
1008 * from its socket. If another thread holds a temporary reference (acquired
1009 * using in_pcbref()) then the free is deferred until that reference is
1010 * released using in_pcbrele(), but the inpcb is still unlocked.
1013 in_pcbfree(struct inpcb *inp)
1016 struct inpcbinfo *ipi = inp->inp_pcbinfo;
1019 KASSERT(inp->inp_socket == NULL, ("%s: inp_socket != NULL",
1022 INP_INFO_WLOCK_ASSERT(ipi);
1023 INP_WLOCK_ASSERT(inp);
1025 if (!in_pcbrele(inp))
1030 * in_pcbdrop() removes an inpcb from hashed lists, releasing its address and
1031 * port reservation, and preventing it from being returned by inpcb lookups.
1033 * It is used by TCP to mark an inpcb as unused and avoid future packet
1034 * delivery or event notification when a socket remains open but TCP has
1035 * closed. This might occur as a result of a shutdown()-initiated TCP close
1036 * or a RST on the wire, and allows the port binding to be reused while still
1037 * maintaining the invariant that so_pcb always points to a valid inpcb until
1040 * XXXRW: An inp_lport of 0 is used to indicate that the inpcb is not on hash
1041 * lists, but can lead to confusing netstat output, as open sockets with
1042 * closed TCP connections will no longer appear to have their bound port
1043 * number. An explicit flag would be better, as it would allow us to leave
1044 * the port number intact after the connection is dropped.
1046 * XXXRW: Possibly in_pcbdrop() should also prevent future notifications by
1047 * in_pcbnotifyall() and in_pcbpurgeif0()?
1050 in_pcbdrop(struct inpcb *inp)
1053 INP_INFO_WLOCK_ASSERT(inp->inp_pcbinfo);
1054 INP_WLOCK_ASSERT(inp);
1056 inp->inp_flags |= INP_DROPPED;
1057 if (inp->inp_flags & INP_INHASHLIST) {
1058 struct inpcbport *phd = inp->inp_phd;
1060 LIST_REMOVE(inp, inp_hash);
1061 LIST_REMOVE(inp, inp_portlist);
1062 if (LIST_FIRST(&phd->phd_pcblist) == NULL) {
1063 LIST_REMOVE(phd, phd_hash);
1066 inp->inp_flags &= ~INP_INHASHLIST;
1071 * Common routines to return the socket addresses associated with inpcbs.
1074 in_sockaddr(in_port_t port, struct in_addr *addr_p)
1076 struct sockaddr_in *sin;
1078 sin = malloc(sizeof *sin, M_SONAME,
1080 sin->sin_family = AF_INET;
1081 sin->sin_len = sizeof(*sin);
1082 sin->sin_addr = *addr_p;
1083 sin->sin_port = port;
1085 return (struct sockaddr *)sin;
1089 in_getsockaddr(struct socket *so, struct sockaddr **nam)
1092 struct in_addr addr;
1095 inp = sotoinpcb(so);
1096 KASSERT(inp != NULL, ("in_getsockaddr: inp == NULL"));
1099 port = inp->inp_lport;
1100 addr = inp->inp_laddr;
1103 *nam = in_sockaddr(port, &addr);
1108 in_getpeeraddr(struct socket *so, struct sockaddr **nam)
1111 struct in_addr addr;
1114 inp = sotoinpcb(so);
1115 KASSERT(inp != NULL, ("in_getpeeraddr: inp == NULL"));
1118 port = inp->inp_fport;
1119 addr = inp->inp_faddr;
1122 *nam = in_sockaddr(port, &addr);
1127 in_pcbnotifyall(struct inpcbinfo *pcbinfo, struct in_addr faddr, int errno,
1128 struct inpcb *(*notify)(struct inpcb *, int))
1130 struct inpcb *inp, *inp_temp;
1132 INP_INFO_WLOCK(pcbinfo);
1133 LIST_FOREACH_SAFE(inp, pcbinfo->ipi_listhead, inp_list, inp_temp) {
1136 if ((inp->inp_vflag & INP_IPV4) == 0) {
1141 if (inp->inp_faddr.s_addr != faddr.s_addr ||
1142 inp->inp_socket == NULL) {
1146 if ((*notify)(inp, errno))
1149 INP_INFO_WUNLOCK(pcbinfo);
1153 in_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp)
1156 struct ip_moptions *imo;
1159 INP_INFO_RLOCK(pcbinfo);
1160 LIST_FOREACH(inp, pcbinfo->ipi_listhead, inp_list) {
1162 imo = inp->inp_moptions;
1163 if ((inp->inp_vflag & INP_IPV4) &&
1166 * Unselect the outgoing interface if it is being
1169 if (imo->imo_multicast_ifp == ifp)
1170 imo->imo_multicast_ifp = NULL;
1173 * Drop multicast group membership if we joined
1174 * through the interface being detached.
1176 for (i = 0, gap = 0; i < imo->imo_num_memberships;
1178 if (imo->imo_membership[i]->inm_ifp == ifp) {
1179 in_delmulti(imo->imo_membership[i]);
1181 } else if (gap != 0)
1182 imo->imo_membership[i - gap] =
1183 imo->imo_membership[i];
1185 imo->imo_num_memberships -= gap;
1189 INP_INFO_RUNLOCK(pcbinfo);
1193 * Lookup a PCB based on the local address and port.
1195 #define INP_LOOKUP_MAPPED_PCB_COST 3
1197 in_pcblookup_local(struct inpcbinfo *pcbinfo, struct in_addr laddr,
1198 u_short lport, int wild_okay, struct ucred *cred)
1202 int matchwild = 3 + INP_LOOKUP_MAPPED_PCB_COST;
1208 INP_INFO_LOCK_ASSERT(pcbinfo);
1211 struct inpcbhead *head;
1213 * Look for an unconnected (wildcard foreign addr) PCB that
1214 * matches the local address and port we're looking for.
1216 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(INADDR_ANY, lport,
1217 0, pcbinfo->ipi_hashmask)];
1218 LIST_FOREACH(inp, head, inp_hash) {
1220 /* XXX inp locking */
1221 if ((inp->inp_vflag & INP_IPV4) == 0)
1224 if (inp->inp_faddr.s_addr == INADDR_ANY &&
1225 inp->inp_laddr.s_addr == laddr.s_addr &&
1226 inp->inp_lport == lport) {
1231 prison_equal_ip4(cred->cr_prison,
1232 inp->inp_cred->cr_prison))
1241 struct inpcbporthead *porthash;
1242 struct inpcbport *phd;
1243 struct inpcb *match = NULL;
1245 * Best fit PCB lookup.
1247 * First see if this local port is in use by looking on the
1250 porthash = &pcbinfo->ipi_porthashbase[INP_PCBPORTHASH(lport,
1251 pcbinfo->ipi_porthashmask)];
1252 LIST_FOREACH(phd, porthash, phd_hash) {
1253 if (phd->phd_port == lport)
1258 * Port is in use by one or more PCBs. Look for best
1261 LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) {
1264 !prison_equal_ip4(inp->inp_cred->cr_prison,
1268 /* XXX inp locking */
1269 if ((inp->inp_vflag & INP_IPV4) == 0)
1272 * We never select the PCB that has
1273 * INP_IPV6 flag and is bound to :: if
1274 * we have another PCB which is bound
1275 * to 0.0.0.0. If a PCB has the
1276 * INP_IPV6 flag, then we set its cost
1277 * higher than IPv4 only PCBs.
1279 * Note that the case only happens
1280 * when a socket is bound to ::, under
1281 * the condition that the use of the
1282 * mapped address is allowed.
1284 if ((inp->inp_vflag & INP_IPV6) != 0)
1285 wildcard += INP_LOOKUP_MAPPED_PCB_COST;
1287 if (inp->inp_faddr.s_addr != INADDR_ANY)
1289 if (inp->inp_laddr.s_addr != INADDR_ANY) {
1290 if (laddr.s_addr == INADDR_ANY)
1292 else if (inp->inp_laddr.s_addr != laddr.s_addr)
1295 if (laddr.s_addr != INADDR_ANY)
1298 if (wildcard < matchwild) {
1300 matchwild = wildcard;
1309 #undef INP_LOOKUP_MAPPED_PCB_COST
1312 * Lookup PCB in hash list.
1315 in_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in_addr faddr,
1316 u_int fport_arg, struct in_addr laddr, u_int lport_arg, int wildcard,
1319 struct inpcbhead *head;
1320 struct inpcb *inp, *tmpinp;
1321 u_short fport = fport_arg, lport = lport_arg;
1323 INP_INFO_LOCK_ASSERT(pcbinfo);
1326 * First look for an exact match.
1329 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(faddr.s_addr, lport, fport,
1330 pcbinfo->ipi_hashmask)];
1331 LIST_FOREACH(inp, head, inp_hash) {
1333 /* XXX inp locking */
1334 if ((inp->inp_vflag & INP_IPV4) == 0)
1337 if (inp->inp_faddr.s_addr == faddr.s_addr &&
1338 inp->inp_laddr.s_addr == laddr.s_addr &&
1339 inp->inp_fport == fport &&
1340 inp->inp_lport == lport) {
1342 * XXX We should be able to directly return
1343 * the inp here, without any checks.
1344 * Well unless both bound with SO_REUSEPORT?
1346 if (prison_flag(inp->inp_cred, PR_IP4))
1356 * Then look for a wildcard match, if requested.
1358 if (wildcard == INPLOOKUP_WILDCARD) {
1359 struct inpcb *local_wild = NULL, *local_exact = NULL;
1361 struct inpcb *local_wild_mapped = NULL;
1363 struct inpcb *jail_wild = NULL;
1367 * Order of socket selection - we always prefer jails.
1368 * 1. jailed, non-wild.
1370 * 3. non-jailed, non-wild.
1371 * 4. non-jailed, wild.
1374 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(INADDR_ANY, lport,
1375 0, pcbinfo->ipi_hashmask)];
1376 LIST_FOREACH(inp, head, inp_hash) {
1378 /* XXX inp locking */
1379 if ((inp->inp_vflag & INP_IPV4) == 0)
1382 if (inp->inp_faddr.s_addr != INADDR_ANY ||
1383 inp->inp_lport != lport)
1386 /* XXX inp locking */
1387 if (ifp && ifp->if_type == IFT_FAITH &&
1388 (inp->inp_flags & INP_FAITH) == 0)
1391 injail = prison_flag(inp->inp_cred, PR_IP4);
1393 if (prison_check_ip4(inp->inp_cred,
1397 if (local_exact != NULL)
1401 if (inp->inp_laddr.s_addr == laddr.s_addr) {
1406 } else if (inp->inp_laddr.s_addr == INADDR_ANY) {
1408 /* XXX inp locking, NULL check */
1409 if (inp->inp_vflag & INP_IPV6PROTO)
1410 local_wild_mapped = inp;
1418 } /* LIST_FOREACH */
1419 if (jail_wild != NULL)
1421 if (local_exact != NULL)
1422 return (local_exact);
1423 if (local_wild != NULL)
1424 return (local_wild);
1426 if (local_wild_mapped != NULL)
1427 return (local_wild_mapped);
1428 #endif /* defined(INET6) */
1429 } /* if (wildcard == INPLOOKUP_WILDCARD) */
1435 * Insert PCB onto various hash lists.
1438 in_pcbinshash(struct inpcb *inp)
1440 struct inpcbhead *pcbhash;
1441 struct inpcbporthead *pcbporthash;
1442 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
1443 struct inpcbport *phd;
1444 u_int32_t hashkey_faddr;
1446 INP_INFO_WLOCK_ASSERT(pcbinfo);
1447 INP_WLOCK_ASSERT(inp);
1448 KASSERT((inp->inp_flags & INP_INHASHLIST) == 0,
1449 ("in_pcbinshash: INP_INHASHLIST"));
1452 if (inp->inp_vflag & INP_IPV6)
1453 hashkey_faddr = inp->in6p_faddr.s6_addr32[3] /* XXX */;
1456 hashkey_faddr = inp->inp_faddr.s_addr;
1458 pcbhash = &pcbinfo->ipi_hashbase[INP_PCBHASH(hashkey_faddr,
1459 inp->inp_lport, inp->inp_fport, pcbinfo->ipi_hashmask)];
1461 pcbporthash = &pcbinfo->ipi_porthashbase[
1462 INP_PCBPORTHASH(inp->inp_lport, pcbinfo->ipi_porthashmask)];
1465 * Go through port list and look for a head for this lport.
1467 LIST_FOREACH(phd, pcbporthash, phd_hash) {
1468 if (phd->phd_port == inp->inp_lport)
1472 * If none exists, malloc one and tack it on.
1475 phd = malloc(sizeof(struct inpcbport), M_PCB, M_NOWAIT);
1477 return (ENOBUFS); /* XXX */
1479 phd->phd_port = inp->inp_lport;
1480 LIST_INIT(&phd->phd_pcblist);
1481 LIST_INSERT_HEAD(pcbporthash, phd, phd_hash);
1484 LIST_INSERT_HEAD(&phd->phd_pcblist, inp, inp_portlist);
1485 LIST_INSERT_HEAD(pcbhash, inp, inp_hash);
1486 inp->inp_flags |= INP_INHASHLIST;
1491 * Move PCB to the proper hash bucket when { faddr, fport } have been
1492 * changed. NOTE: This does not handle the case of the lport changing (the
1493 * hashed port list would have to be updated as well), so the lport must
1494 * not change after in_pcbinshash() has been called.
1497 in_pcbrehash(struct inpcb *inp)
1499 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
1500 struct inpcbhead *head;
1501 u_int32_t hashkey_faddr;
1503 INP_INFO_WLOCK_ASSERT(pcbinfo);
1504 INP_WLOCK_ASSERT(inp);
1505 KASSERT(inp->inp_flags & INP_INHASHLIST,
1506 ("in_pcbrehash: !INP_INHASHLIST"));
1509 if (inp->inp_vflag & INP_IPV6)
1510 hashkey_faddr = inp->in6p_faddr.s6_addr32[3] /* XXX */;
1513 hashkey_faddr = inp->inp_faddr.s_addr;
1515 head = &pcbinfo->ipi_hashbase[INP_PCBHASH(hashkey_faddr,
1516 inp->inp_lport, inp->inp_fport, pcbinfo->ipi_hashmask)];
1518 LIST_REMOVE(inp, inp_hash);
1519 LIST_INSERT_HEAD(head, inp, inp_hash);
1523 * Remove PCB from various lists.
1526 in_pcbremlists(struct inpcb *inp)
1528 struct inpcbinfo *pcbinfo = inp->inp_pcbinfo;
1530 INP_INFO_WLOCK_ASSERT(pcbinfo);
1531 INP_WLOCK_ASSERT(inp);
1533 inp->inp_gencnt = ++pcbinfo->ipi_gencnt;
1534 if (inp->inp_flags & INP_INHASHLIST) {
1535 struct inpcbport *phd = inp->inp_phd;
1537 LIST_REMOVE(inp, inp_hash);
1538 LIST_REMOVE(inp, inp_portlist);
1539 if (LIST_FIRST(&phd->phd_pcblist) == NULL) {
1540 LIST_REMOVE(phd, phd_hash);
1543 inp->inp_flags &= ~INP_INHASHLIST;
1545 LIST_REMOVE(inp, inp_list);
1546 pcbinfo->ipi_count--;
1550 * A set label operation has occurred at the socket layer, propagate the
1551 * label change into the in_pcb for the socket.
1554 in_pcbsosetlabel(struct socket *so)
1559 inp = sotoinpcb(so);
1560 KASSERT(inp != NULL, ("in_pcbsosetlabel: so->so_pcb == NULL"));
1564 mac_inpcb_sosetlabel(so, inp);
1571 * ipport_tick runs once per second, determining if random port allocation
1572 * should be continued. If more than ipport_randomcps ports have been
1573 * allocated in the last second, then we return to sequential port
1574 * allocation. We return to random allocation only once we drop below
1575 * ipport_randomcps for at least ipport_randomtime seconds.
1578 ipport_tick(void *xtp)
1580 VNET_ITERATOR_DECL(vnet_iter);
1582 VNET_LIST_RLOCK_NOSLEEP();
1583 VNET_FOREACH(vnet_iter) {
1584 CURVNET_SET(vnet_iter); /* XXX appease INVARIANTS here */
1585 if (V_ipport_tcpallocs <=
1586 V_ipport_tcplastcount + V_ipport_randomcps) {
1587 if (V_ipport_stoprandom > 0)
1588 V_ipport_stoprandom--;
1590 V_ipport_stoprandom = V_ipport_randomtime;
1591 V_ipport_tcplastcount = V_ipport_tcpallocs;
1594 VNET_LIST_RUNLOCK_NOSLEEP();
1595 callout_reset(&ipport_tick_callout, hz, ipport_tick, NULL);
1599 inp_wlock(struct inpcb *inp)
1606 inp_wunlock(struct inpcb *inp)
1613 inp_rlock(struct inpcb *inp)
1620 inp_runlock(struct inpcb *inp)
1628 inp_lock_assert(struct inpcb *inp)
1631 INP_WLOCK_ASSERT(inp);
1635 inp_unlock_assert(struct inpcb *inp)
1638 INP_UNLOCK_ASSERT(inp);
1643 inp_apply_all(void (*func)(struct inpcb *, void *), void *arg)
1647 INP_INFO_RLOCK(&V_tcbinfo);
1648 LIST_FOREACH(inp, V_tcbinfo.ipi_listhead, inp_list) {
1653 INP_INFO_RUNLOCK(&V_tcbinfo);
1657 inp_inpcbtosocket(struct inpcb *inp)
1660 INP_WLOCK_ASSERT(inp);
1661 return (inp->inp_socket);
1665 inp_inpcbtotcpcb(struct inpcb *inp)
1668 INP_WLOCK_ASSERT(inp);
1669 return ((struct tcpcb *)inp->inp_ppcb);
1673 inp_ip_tos_get(const struct inpcb *inp)
1676 return (inp->inp_ip_tos);
1680 inp_ip_tos_set(struct inpcb *inp, int val)
1683 inp->inp_ip_tos = val;
1687 inp_4tuple_get(struct inpcb *inp, uint32_t *laddr, uint16_t *lp,
1688 uint32_t *faddr, uint16_t *fp)
1691 INP_LOCK_ASSERT(inp);
1692 *laddr = inp->inp_laddr.s_addr;
1693 *faddr = inp->inp_faddr.s_addr;
1694 *lp = inp->inp_lport;
1695 *fp = inp->inp_fport;
1699 so_sotoinpcb(struct socket *so)
1702 return (sotoinpcb(so));
1706 so_sototcpcb(struct socket *so)
1709 return (sototcpcb(so));
1714 db_print_indent(int indent)
1718 for (i = 0; i < indent; i++)
1723 db_print_inconninfo(struct in_conninfo *inc, const char *name, int indent)
1725 char faddr_str[48], laddr_str[48];
1727 db_print_indent(indent);
1728 db_printf("%s at %p\n", name, inc);
1733 if (inc->inc_flags & INC_ISIPV6) {
1735 ip6_sprintf(laddr_str, &inc->inc6_laddr);
1736 ip6_sprintf(faddr_str, &inc->inc6_faddr);
1740 inet_ntoa_r(inc->inc_laddr, laddr_str);
1741 inet_ntoa_r(inc->inc_faddr, faddr_str);
1745 db_print_indent(indent);
1746 db_printf("inc_laddr %s inc_lport %u\n", laddr_str,
1747 ntohs(inc->inc_lport));
1748 db_print_indent(indent);
1749 db_printf("inc_faddr %s inc_fport %u\n", faddr_str,
1750 ntohs(inc->inc_fport));
1754 db_print_inpflags(int inp_flags)
1759 if (inp_flags & INP_RECVOPTS) {
1760 db_printf("%sINP_RECVOPTS", comma ? ", " : "");
1763 if (inp_flags & INP_RECVRETOPTS) {
1764 db_printf("%sINP_RECVRETOPTS", comma ? ", " : "");
1767 if (inp_flags & INP_RECVDSTADDR) {
1768 db_printf("%sINP_RECVDSTADDR", comma ? ", " : "");
1771 if (inp_flags & INP_HDRINCL) {
1772 db_printf("%sINP_HDRINCL", comma ? ", " : "");
1775 if (inp_flags & INP_HIGHPORT) {
1776 db_printf("%sINP_HIGHPORT", comma ? ", " : "");
1779 if (inp_flags & INP_LOWPORT) {
1780 db_printf("%sINP_LOWPORT", comma ? ", " : "");
1783 if (inp_flags & INP_ANONPORT) {
1784 db_printf("%sINP_ANONPORT", comma ? ", " : "");
1787 if (inp_flags & INP_RECVIF) {
1788 db_printf("%sINP_RECVIF", comma ? ", " : "");
1791 if (inp_flags & INP_MTUDISC) {
1792 db_printf("%sINP_MTUDISC", comma ? ", " : "");
1795 if (inp_flags & INP_FAITH) {
1796 db_printf("%sINP_FAITH", comma ? ", " : "");
1799 if (inp_flags & INP_RECVTTL) {
1800 db_printf("%sINP_RECVTTL", comma ? ", " : "");
1803 if (inp_flags & INP_DONTFRAG) {
1804 db_printf("%sINP_DONTFRAG", comma ? ", " : "");
1807 if (inp_flags & IN6P_IPV6_V6ONLY) {
1808 db_printf("%sIN6P_IPV6_V6ONLY", comma ? ", " : "");
1811 if (inp_flags & IN6P_PKTINFO) {
1812 db_printf("%sIN6P_PKTINFO", comma ? ", " : "");
1815 if (inp_flags & IN6P_HOPLIMIT) {
1816 db_printf("%sIN6P_HOPLIMIT", comma ? ", " : "");
1819 if (inp_flags & IN6P_HOPOPTS) {
1820 db_printf("%sIN6P_HOPOPTS", comma ? ", " : "");
1823 if (inp_flags & IN6P_DSTOPTS) {
1824 db_printf("%sIN6P_DSTOPTS", comma ? ", " : "");
1827 if (inp_flags & IN6P_RTHDR) {
1828 db_printf("%sIN6P_RTHDR", comma ? ", " : "");
1831 if (inp_flags & IN6P_RTHDRDSTOPTS) {
1832 db_printf("%sIN6P_RTHDRDSTOPTS", comma ? ", " : "");
1835 if (inp_flags & IN6P_TCLASS) {
1836 db_printf("%sIN6P_TCLASS", comma ? ", " : "");
1839 if (inp_flags & IN6P_AUTOFLOWLABEL) {
1840 db_printf("%sIN6P_AUTOFLOWLABEL", comma ? ", " : "");
1843 if (inp_flags & INP_TIMEWAIT) {
1844 db_printf("%sINP_TIMEWAIT", comma ? ", " : "");
1847 if (inp_flags & INP_ONESBCAST) {
1848 db_printf("%sINP_ONESBCAST", comma ? ", " : "");
1851 if (inp_flags & INP_DROPPED) {
1852 db_printf("%sINP_DROPPED", comma ? ", " : "");
1855 if (inp_flags & INP_SOCKREF) {
1856 db_printf("%sINP_SOCKREF", comma ? ", " : "");
1859 if (inp_flags & IN6P_RFC2292) {
1860 db_printf("%sIN6P_RFC2292", comma ? ", " : "");
1863 if (inp_flags & IN6P_MTU) {
1864 db_printf("IN6P_MTU%s", comma ? ", " : "");
1870 db_print_inpvflag(u_char inp_vflag)
1875 if (inp_vflag & INP_IPV4) {
1876 db_printf("%sINP_IPV4", comma ? ", " : "");
1879 if (inp_vflag & INP_IPV6) {
1880 db_printf("%sINP_IPV6", comma ? ", " : "");
1883 if (inp_vflag & INP_IPV6PROTO) {
1884 db_printf("%sINP_IPV6PROTO", comma ? ", " : "");
1890 db_print_inpcb(struct inpcb *inp, const char *name, int indent)
1893 db_print_indent(indent);
1894 db_printf("%s at %p\n", name, inp);
1898 db_print_indent(indent);
1899 db_printf("inp_flow: 0x%x\n", inp->inp_flow);
1901 db_print_inconninfo(&inp->inp_inc, "inp_conninfo", indent);
1903 db_print_indent(indent);
1904 db_printf("inp_ppcb: %p inp_pcbinfo: %p inp_socket: %p\n",
1905 inp->inp_ppcb, inp->inp_pcbinfo, inp->inp_socket);
1907 db_print_indent(indent);
1908 db_printf("inp_label: %p inp_flags: 0x%x (",
1909 inp->inp_label, inp->inp_flags);
1910 db_print_inpflags(inp->inp_flags);
1913 db_print_indent(indent);
1914 db_printf("inp_sp: %p inp_vflag: 0x%x (", inp->inp_sp,
1916 db_print_inpvflag(inp->inp_vflag);
1919 db_print_indent(indent);
1920 db_printf("inp_ip_ttl: %d inp_ip_p: %d inp_ip_minttl: %d\n",
1921 inp->inp_ip_ttl, inp->inp_ip_p, inp->inp_ip_minttl);
1923 db_print_indent(indent);
1925 if (inp->inp_vflag & INP_IPV6) {
1926 db_printf("in6p_options: %p in6p_outputopts: %p "
1927 "in6p_moptions: %p\n", inp->in6p_options,
1928 inp->in6p_outputopts, inp->in6p_moptions);
1929 db_printf("in6p_icmp6filt: %p in6p_cksum %d "
1930 "in6p_hops %u\n", inp->in6p_icmp6filt, inp->in6p_cksum,
1935 db_printf("inp_ip_tos: %d inp_ip_options: %p "
1936 "inp_ip_moptions: %p\n", inp->inp_ip_tos,
1937 inp->inp_options, inp->inp_moptions);
1940 db_print_indent(indent);
1941 db_printf("inp_phd: %p inp_gencnt: %ju\n", inp->inp_phd,
1942 (uintmax_t)inp->inp_gencnt);
1945 DB_SHOW_COMMAND(inpcb, db_show_inpcb)
1950 db_printf("usage: show inpcb <addr>\n");
1953 inp = (struct inpcb *)addr;
1955 db_print_inpcb(inp, "inpcb", 0);