1 /* $FreeBSD: src/sys/netinet6/in6_pcb.c,v 1.10.2.9 2003/01/24 05:11:35 sam Exp $ */
2 /* $KAME: in6_pcb.c,v 1.31 2001/05/21 05:45:10 jinmei Exp $ */
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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62 * @(#)in_pcb.c 8.2 (Berkeley) 1/4/94
66 #include "opt_inet6.h"
67 #include "opt_ipsec.h"
69 #include <sys/param.h>
70 #include <sys/systm.h>
71 #include <sys/malloc.h>
73 #include <sys/domain.h>
74 #include <sys/protosw.h>
75 #include <sys/socket.h>
76 #include <sys/socketvar.h>
77 #include <sys/sockio.h>
78 #include <sys/errno.h>
84 #include <sys/thread2.h>
85 #include <sys/msgport2.h>
87 #include <vm/vm_zone.h>
90 #include <net/if_types.h>
91 #include <net/route.h>
92 #include <net/netisr2.h>
94 #include <netinet/in.h>
95 #include <netinet/in_var.h>
96 #include <netinet/in_systm.h>
97 #include <netinet/ip6.h>
98 #include <netinet/ip_var.h>
99 #include <netinet6/ip6_var.h>
100 #include <netinet6/nd6.h>
101 #include <netinet/in_pcb.h>
102 #include <netinet6/in6_pcb.h>
105 #include <netinet6/ipsec.h>
107 #include <netinet6/ipsec6.h>
109 #include <netinet6/ah.h>
111 #include <netinet6/ah6.h>
113 #include <netproto/key/key.h>
117 #include <netproto/ipsec/ipsec.h>
118 #include <netproto/ipsec/ipsec6.h>
119 #include <netproto/ipsec/key.h>
121 #endif /* FAST_IPSEC */
123 struct in6_addr zeroin6_addr;
126 in6_pcbbind(struct inpcb *inp, struct sockaddr *nam, struct thread *td)
128 struct socket *so = inp->inp_socket;
129 struct sockaddr_in6 jsin6;
132 if (!in6_ifaddr) /* XXX broken! */
133 return (EADDRNOTAVAIL);
134 if (inp->inp_lport || !IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
138 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
139 struct inpcbinfo *pcbinfo;
140 struct inpcbportinfo *portinfo;
141 int wild = 0, reuseport = (so->so_options & SO_REUSEPORT);
142 struct ucred *cred = NULL;
144 u_short lport, lport_ho;
146 if ((so->so_options & (SO_REUSEADDR|SO_REUSEPORT)) == 0)
148 if (td->td_proc != NULL)
149 cred = td->td_proc->p_ucred;
151 if (nam->sa_len != sizeof(*sin6))
156 if (nam->sa_family != AF_INET6)
157 return (EAFNOSUPPORT);
159 /* Reject v4-mapped address */
160 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr))
161 return (EADDRNOTAVAIL);
163 if (!prison_replace_wildcards(td, nam))
166 /* KAME hack: embed scopeid */
167 if (in6_embedscope(&sin6->sin6_addr, sin6, inp, NULL) != 0)
169 /* this must be cleared for ifa_ifwithaddr() */
170 sin6->sin6_scope_id = 0;
172 lport = sin6->sin6_port;
173 if (IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
175 * Treat SO_REUSEADDR as SO_REUSEPORT for multicast;
176 * allow compepte duplication of binding if
177 * SO_REUSEPORT is set, or if SO_REUSEADDR is set
178 * and a multicast address is bound on both
179 * new and duplicated sockets.
181 if (so->so_options & SO_REUSEADDR)
182 reuseport = SO_REUSEADDR|SO_REUSEPORT;
183 } else if (!IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
184 struct ifaddr *ia = NULL;
186 sin6->sin6_port = 0; /* yech... */
187 if (!prison_replace_wildcards(td, (struct sockaddr *)sin6)) {
188 sin6->sin6_addr = kin6addr_any;
191 if ((ia = ifa_ifwithaddr((struct sockaddr *)sin6)) == NULL)
192 return (EADDRNOTAVAIL);
195 * XXX: bind to an anycast address might accidentally
196 * cause sending a packet with anycast source address.
197 * We should allow to bind to a deprecated address, since
198 * the application dares to use it.
201 ((struct in6_ifaddr *)ia)->ia6_flags &
202 (IN6_IFF_ANYCAST|IN6_IFF_NOTREADY|IN6_IFF_DETACHED))
203 return (EADDRNOTAVAIL);
206 inp->in6p_laddr = sin6->sin6_addr;
210 lport_ho = ntohs(lport);
213 if (lport_ho < IPV6PORT_RESERVED && cred &&
214 priv_check_cred(cred, PRIV_NETINET_RESERVEDPORT, 0)) {
215 inp->in6p_laddr = kin6addr_any;
220 * Locate the proper portinfo based on lport
222 pcbinfo = inp->inp_pcbinfo;
224 &pcbinfo->portinfo[lport_ho & pcbinfo->portinfo_mask];
225 KKASSERT((lport_ho & pcbinfo->portinfo_mask) ==
229 * This has to be atomic. If the porthash is shared across
230 * multiple protocol threads (aka tcp) then the token must
233 GET_PORT_TOKEN(portinfo);
235 if (so->so_cred->cr_uid != 0 &&
236 !IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
237 t = in6_pcblookup_local(portinfo,
238 &sin6->sin6_addr, lport, INPLOOKUP_WILDCARD, cred);
240 (so->so_cred->cr_uid !=
241 t->inp_socket->so_cred->cr_uid)) {
242 inp->in6p_laddr = kin6addr_any;
247 if (cred && cred->cr_prison &&
248 !prison_replace_wildcards(td, nam)) {
249 inp->in6p_laddr = kin6addr_any;
250 error = EADDRNOTAVAIL;
253 t = in6_pcblookup_local(portinfo, &sin6->sin6_addr, lport,
255 if (t && (reuseport & t->inp_socket->so_options) == 0) {
256 inp->in6p_laddr = kin6addr_any;
261 inp->inp_lport = lport;
262 in_pcbinsporthash(portinfo, inp);
265 REL_PORT_TOKEN(portinfo);
269 jsin6.sin6_addr = inp->in6p_laddr;
270 jsin6.sin6_family = AF_INET6;
271 if (!prison_replace_wildcards(td, (struct sockaddr*)&jsin6)) {
272 inp->in6p_laddr = kin6addr_any;
277 return in6_pcbsetlport(&inp->in6p_laddr, inp, td);
282 * Transform old in6_pcbconnect() into an inner subroutine for new
283 * in6_pcbconnect(): Do some validity-checking on the remote
284 * address (in mbuf 'nam') and then determine local host address
285 * (i.e., which interface) to use to access that remote host.
287 * This preserves definition of in6_pcbconnect(), while supporting a
288 * slightly different version for T/TCP. (This is more than
289 * a bit of a kludge, but cleaning up the internal interfaces would
290 * have forced minor changes in every protocol).
294 in6_pcbladdr(struct inpcb *inp, struct sockaddr *nam,
295 struct in6_addr **plocal_addr6, struct thread *td)
297 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
298 struct ifnet *ifp = NULL;
301 if (nam->sa_len != sizeof (*sin6))
303 if (sin6->sin6_family != AF_INET6)
304 return (EAFNOSUPPORT);
305 if (sin6->sin6_port == 0)
306 return (EADDRNOTAVAIL);
308 /* KAME hack: embed scopeid */
309 if (in6_embedscope(&sin6->sin6_addr, sin6, inp, &ifp) != 0)
314 * If the destination address is UNSPECIFIED addr,
315 * use the loopback addr, e.g ::1.
317 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr))
318 sin6->sin6_addr = kin6addr_loopback;
322 * XXX: in6_selectsrc might replace the bound local address
323 * with the address specified by setsockopt(IPV6_PKTINFO).
324 * Is it the intended behavior?
326 *plocal_addr6 = in6_selectsrc(sin6, inp->in6p_outputopts,
329 &inp->in6p_laddr, &error, td);
330 if (*plocal_addr6 == NULL) {
332 error = EADDRNOTAVAIL;
336 * Don't do pcblookup call here; return interface in
338 * and exit to caller, that will do the lookup.
342 if (inp->in6p_route.ro_rt)
343 ifp = inp->in6p_route.ro_rt->rt_ifp;
350 * Connect from a socket to a specified address.
351 * Both address and port must be specified in argument sin.
352 * If don't have a local address for this socket yet,
356 in6_pcbconnect(struct inpcb *inp, struct sockaddr *nam, struct thread *td)
358 struct in6_addr *addr6;
359 struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)nam;
362 /* Reject v4-mapped address */
363 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr))
364 return EADDRNOTAVAIL;
367 * Call inner routine, to assign local interface address.
368 * in6_pcbladdr() may automatically fill in sin6_scope_id.
370 if ((error = in6_pcbladdr(inp, nam, &addr6, td)) != 0)
373 if (in6_pcblookup_hash(inp->inp_pcbinfo, &sin6->sin6_addr,
375 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)
376 ? addr6 : &inp->in6p_laddr,
377 inp->inp_lport, 0, NULL) != NULL) {
380 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
381 if (inp->inp_lport == 0) {
382 error = in6_pcbbind(inp, NULL, td);
386 inp->in6p_laddr = *addr6;
388 inp->in6p_faddr = sin6->sin6_addr;
389 inp->inp_fport = sin6->sin6_port;
390 /* update flowinfo - draft-itojun-ipv6-flowlabel-api-00 */
391 inp->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK;
392 if (inp->in6p_flags & IN6P_AUTOFLOWLABEL)
393 inp->in6p_flowinfo |=
394 (htonl(ip6_flow_seq++) & IPV6_FLOWLABEL_MASK);
396 in_pcbinsconnhash(inp);
401 in6_pcbdisconnect(struct inpcb *inp)
403 bzero((caddr_t)&inp->in6p_faddr, sizeof(inp->in6p_faddr));
405 /* clear flowinfo - draft-itojun-ipv6-flowlabel-api-00 */
406 inp->in6p_flowinfo &= ~IPV6_FLOWLABEL_MASK;
407 in_pcbremconnhash(inp);
408 if (inp->inp_socket->so_state & SS_NOFDREF)
413 in6_pcbdetach(struct inpcb *inp)
415 struct socket *so = inp->inp_socket;
416 struct inpcbinfo *ipi = inp->inp_pcbinfo;
419 if (inp->in6p_sp != NULL)
420 ipsec6_delete_pcbpolicy(inp);
422 inp->inp_gencnt = ++ipi->ipi_gencnt;
425 KKASSERT((so->so_state & SS_ASSERTINPROG) == 0);
426 sofree(so); /* remove pcb ref */
428 if (inp->in6p_options)
429 m_freem(inp->in6p_options);
430 ip6_freepcbopts(inp->in6p_outputopts);
431 ip6_freemoptions(inp->in6p_moptions);
432 if (inp->in6p_route.ro_rt)
433 rtfree(inp->in6p_route.ro_rt);
434 /* Check and free IPv4 related resources in case of mapped addr */
435 if (inp->inp_options)
436 m_free(inp->inp_options);
437 ip_freemoptions(inp->inp_moptions);
443 * The socket may have an invalid PCB, i.e. NULL. For example, a TCP
444 * socket received RST.
447 in6_setsockaddr(struct socket *so, struct sockaddr **nam)
450 struct sockaddr_in6 *sin6;
452 KASSERT(curthread->td_type == TD_TYPE_NETISR, ("not in netisr"));
457 sin6 = kmalloc(sizeof *sin6, M_SONAME, M_WAITOK | M_ZERO);
458 sin6->sin6_family = AF_INET6;
459 sin6->sin6_len = sizeof(*sin6);
460 sin6->sin6_port = inp->inp_lport;
461 sin6->sin6_addr = inp->in6p_laddr;
462 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
463 sin6->sin6_scope_id = ntohs(sin6->sin6_addr.s6_addr16[1]);
465 sin6->sin6_scope_id = 0; /*XXX*/
466 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
467 sin6->sin6_addr.s6_addr16[1] = 0;
469 *nam = (struct sockaddr *)sin6;
474 in6_setsockaddr_dispatch(netmsg_t msg)
478 error = in6_setsockaddr(msg->sockaddr.base.nm_so, msg->sockaddr.nm_nam);
479 lwkt_replymsg(&msg->sockaddr.base.lmsg, error);
483 in6_setpeeraddr_dispatch(netmsg_t msg)
487 error = in6_setpeeraddr(msg->peeraddr.base.nm_so, msg->peeraddr.nm_nam);
488 lwkt_replymsg(&msg->peeraddr.base.lmsg, error);
492 * The socket may have an invalid PCB, i.e. NULL. For example, a TCP
493 * socket received RST.
496 in6_setpeeraddr(struct socket *so, struct sockaddr **nam)
499 struct sockaddr_in6 *sin6;
501 KASSERT(curthread->td_type == TD_TYPE_NETISR, ("not in netisr"));
506 sin6 = kmalloc(sizeof(*sin6), M_SONAME, M_WAITOK | M_ZERO);
507 sin6->sin6_family = AF_INET6;
508 sin6->sin6_len = sizeof(struct sockaddr_in6);
509 sin6->sin6_port = inp->inp_fport;
510 sin6->sin6_addr = inp->in6p_faddr;
511 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
512 sin6->sin6_scope_id = ntohs(sin6->sin6_addr.s6_addr16[1]);
514 sin6->sin6_scope_id = 0; /*XXX*/
515 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
516 sin6->sin6_addr.s6_addr16[1] = 0;
518 *nam = (struct sockaddr *)sin6;
523 * Pass some notification to all connections of a protocol
524 * associated with address dst. The local address and/or port numbers
525 * may be specified to limit the search. The "usual action" will be
526 * taken, depending on the ctlinput cmd. The caller must filter any
527 * cmds that are uninteresting (e.g., no error in the map).
528 * Call the protocol specific routine (if any) to report
529 * any errors for each matching socket.
532 in6_pcbnotify(struct inpcbinfo *pcbinfo, struct sockaddr *dst, in_port_t fport,
533 const struct sockaddr *src, in_port_t lport, int cmd, int arg,
536 struct inpcb *inp, *marker;
537 struct sockaddr_in6 sa6_src, *sa6_dst;
540 if ((unsigned)cmd >= PRC_NCMDS || dst->sa_family != AF_INET6)
543 sa6_dst = (struct sockaddr_in6 *)dst;
544 if (IN6_IS_ADDR_UNSPECIFIED(&sa6_dst->sin6_addr))
548 * note that src can be NULL when we get notify by local fragmentation.
550 sa6_src = (src == NULL) ? sa6_any : *(const struct sockaddr_in6 *)src;
551 flowinfo = sa6_src.sin6_flowinfo;
554 * Redirects go to all references to the destination,
555 * and use in6_rtchange to invalidate the route cache.
556 * Dead host indications: also use in6_rtchange to invalidate
557 * the cache, and deliver the error to all the sockets.
558 * Otherwise, if we have knowledge of the local port and address,
559 * deliver only to that socket.
561 if (PRC_IS_REDIRECT(cmd) || cmd == PRC_HOSTDEAD) {
564 bzero((caddr_t)&sa6_src.sin6_addr, sizeof(sa6_src.sin6_addr));
566 if (cmd != PRC_HOSTDEAD)
567 notify = in6_rtchange;
569 if (cmd != PRC_MSGSIZE)
570 arg = inet6ctlerrmap[cmd];
572 marker = in_pcbmarker(mycpuid);
574 GET_PCBINFO_TOKEN(pcbinfo);
576 LIST_INSERT_HEAD(&pcbinfo->pcblisthead, marker, inp_list);
577 while ((inp = LIST_NEXT(marker, inp_list)) != NULL) {
578 LIST_REMOVE(marker, inp_list);
579 LIST_INSERT_AFTER(inp, marker, inp_list);
581 if (inp->inp_flags & INP_PLACEMARKER)
584 if (!INP_ISIPV6(inp))
587 * If the error designates a new path MTU for a destination
588 * and the application (associated with this socket) wanted to
589 * know the value, notify. Note that we notify for all
590 * disconnected sockets if the corresponding application
591 * wanted. This is because some UDP applications keep sending
592 * sockets disconnected.
593 * XXX: should we avoid to notify the value to TCP sockets?
595 if (cmd == PRC_MSGSIZE && (inp->inp_flags & IN6P_MTU) != 0 &&
596 (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) ||
597 IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, &sa6_dst->sin6_addr))) {
598 ip6_notify_pmtu(inp, (struct sockaddr_in6 *)dst, &arg);
602 * Detect if we should notify the error. If no source and
603 * destination ports are specifed, but non-zero flowinfo and
604 * local address match, notify the error. This is the case
605 * when the error is delivered with an encrypted buffer
606 * by ESP. Otherwise, just compare addresses and ports
609 if (lport == 0 && fport == 0 && flowinfo &&
610 inp->inp_socket != NULL &&
611 flowinfo == (inp->in6p_flowinfo & IPV6_FLOWLABEL_MASK) &&
612 IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, &sa6_src.sin6_addr))
614 else if (!IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr,
615 &sa6_dst->sin6_addr) ||
616 inp->inp_socket == 0 ||
617 (lport && inp->inp_lport != lport) ||
618 (!IN6_IS_ADDR_UNSPECIFIED(&sa6_src.sin6_addr) &&
619 !IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr,
620 &sa6_src.sin6_addr)) ||
621 (fport && inp->inp_fport != fport))
628 LIST_REMOVE(marker, inp_list);
630 REL_PCBINFO_TOKEN(pcbinfo);
634 * Lookup a PCB based on the local address and port.
637 in6_pcblookup_local(struct inpcbportinfo *portinfo,
638 const struct in6_addr *laddr, u_int lport_arg, int wild_okay,
642 int matchwild = 3, wildcard;
643 u_short lport = lport_arg;
644 struct inpcbporthead *porthash;
645 struct inpcbport *phd;
646 struct inpcb *match = NULL;
649 * If the porthashbase is shared across several cpus, it must
652 ASSERT_PORT_TOKEN_HELD(portinfo);
655 * Best fit PCB lookup.
657 * First see if this local port is in use by looking on the
660 porthash = &portinfo->porthashbase[
661 INP_PCBPORTHASH(lport, portinfo->porthashmask)];
662 LIST_FOREACH(phd, porthash, phd_hash) {
663 if (phd->phd_port == lport)
669 * Port is in use by one or more PCBs. Look for best
672 LIST_FOREACH(inp, &phd->phd_pcblist, inp_portlist) {
674 if (!INP_ISIPV6(inp))
676 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr))
678 if (!IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
679 if (IN6_IS_ADDR_UNSPECIFIED(laddr))
681 else if (!IN6_ARE_ADDR_EQUAL(
682 &inp->in6p_laddr, laddr))
685 if (!IN6_IS_ADDR_UNSPECIFIED(laddr))
688 if (wildcard && !wild_okay)
690 if (wildcard < matchwild &&
693 inp->inp_socket->so_cred->cr_prison)) {
695 matchwild = wildcard;
699 matchwild = wildcard;
707 in6_pcbpurgeif0(struct inpcbinfo *pcbinfo, struct ifnet *ifp)
709 struct in6pcb *in6p, *marker;
710 struct ip6_moptions *im6o;
711 struct in6_multi_mship *imm, *nimm;
714 * We only need to make sure that we are in netisr0, where all
715 * multicast operation happen. We could check inpcbinfo which
716 * does not belong to netisr0 by holding the inpcbinfo's token.
717 * In this case, the pcbinfo must be able to be shared, i.e.
718 * pcbinfo->infotoken is not NULL.
721 KASSERT(pcbinfo->cpu == 0 || pcbinfo->infotoken != NULL,
722 ("pcbinfo could not be shared"));
725 * Get a marker for the current netisr (netisr0).
727 * It is possible that the multicast address deletion blocks,
728 * which could cause temporary token releasing. So we use
729 * inpcb marker here to get a coherent view of the inpcb list.
731 * While, on the other hand, moptions are only added and deleted
732 * in netisr0, so we would not see staled moption or miss moption
733 * even if the token was released due to the blocking multicast
736 marker = in_pcbmarker(mycpuid);
738 GET_PCBINFO_TOKEN(pcbinfo);
740 LIST_INSERT_HEAD(&pcbinfo->pcblisthead, marker, inp_list);
741 while ((in6p = LIST_NEXT(marker, inp_list)) != NULL) {
742 LIST_REMOVE(marker, inp_list);
743 LIST_INSERT_AFTER(in6p, marker, inp_list);
745 if (in6p->in6p_flags & INP_PLACEMARKER)
747 im6o = in6p->in6p_moptions;
748 if (INP_ISIPV6(in6p) && im6o) {
750 * Unselect the outgoing interface if it is being
753 if (im6o->im6o_multicast_ifp == ifp)
754 im6o->im6o_multicast_ifp = NULL;
757 * Drop multicast group membership if we joined
758 * through the interface being detached.
759 * XXX controversial - is it really legal for kernel
762 for (imm = im6o->im6o_memberships.lh_first;
763 imm != NULL; imm = nimm) {
764 nimm = imm->i6mm_chain.le_next;
765 if (imm->i6mm_maddr->in6m_ifp == ifp) {
766 LIST_REMOVE(imm, i6mm_chain);
767 in6_delmulti(imm->i6mm_maddr);
768 kfree(imm, M_IPMADDR);
773 LIST_REMOVE(marker, inp_list);
775 REL_PCBINFO_TOKEN(pcbinfo);
779 * Check for alternatives when higher level complains
780 * about service problems. For now, invalidate cached
781 * routing information. If the route was created dynamically
782 * (by a redirect), time to try a default gateway again.
785 in6_losing(struct inpcb *in6p)
788 struct rt_addrinfo info;
790 if ((rt = in6p->in6p_route.ro_rt) != NULL) {
791 bzero((caddr_t)&info, sizeof(info));
792 info.rti_flags = rt->rt_flags;
793 info.rti_info[RTAX_DST] = rt_key(rt);
794 info.rti_info[RTAX_GATEWAY] = rt->rt_gateway;
795 info.rti_info[RTAX_NETMASK] = rt_mask(rt);
796 rt_missmsg(RTM_LOSING, &info, rt->rt_flags, 0);
797 if (rt->rt_flags & RTF_DYNAMIC) {
798 rtrequest(RTM_DELETE, rt_key(rt), rt->rt_gateway,
799 rt_mask(rt), rt->rt_flags, NULL);
801 in6p->in6p_route.ro_rt = NULL;
804 * A new route can be allocated
805 * the next time output is attempted.
811 * After a routing change, flush old routing
812 * and allocate a (hopefully) better one.
815 in6_rtchange(struct inpcb *inp, int error)
817 if (inp->in6p_route.ro_rt) {
818 rtfree(inp->in6p_route.ro_rt);
819 inp->in6p_route.ro_rt = 0;
821 * A new route can be allocated the next time
822 * output is attempted.
828 * Lookup PCB in hash list.
831 in6_pcblookup_hash(struct inpcbinfo *pcbinfo, struct in6_addr *faddr,
832 u_int fport_arg, struct in6_addr *laddr, u_int lport_arg,
833 int wildcard, struct ifnet *ifp)
835 struct inpcbhead *head;
837 struct inpcb *jinp = NULL;
838 u_short fport = fport_arg, lport = lport_arg;
841 if (faithprefix_p != NULL)
842 faith = (*faithprefix_p)(laddr);
847 * First look for an exact match.
849 head = &pcbinfo->hashbase[INP_PCBCONNHASH(faddr->s6_addr32[3] /* XXX */,
851 laddr->s6_addr32[3], /* XXX JH */
854 LIST_FOREACH(inp, head, inp_hash) {
855 if (!INP_ISIPV6(inp))
857 if (IN6_ARE_ADDR_EQUAL(&inp->in6p_faddr, faddr) &&
858 IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr, laddr) &&
859 inp->inp_fport == fport &&
860 inp->inp_lport == lport) {
864 if (inp->inp_socket == NULL ||
865 inp->inp_socket->so_cred->cr_prison == NULL) {
877 struct inpcontainerhead *chead;
878 struct inpcontainer *ic;
879 struct inpcb *local_wild = NULL;
880 struct inpcb *jinp_wild = NULL;
881 struct sockaddr_in6 jsin6;
885 * Order of socket selection:
886 * 1. non-jailed, non-wild.
887 * 2. non-jailed, wild.
888 * 3. jailed, non-wild.
891 jsin6.sin6_family = AF_INET6;
892 chead = &pcbinfo->wildcardhashbase[INP_PCBWILDCARDHASH(lport,
893 pcbinfo->wildcardhashmask)];
895 GET_PCBINFO_TOKEN(pcbinfo);
896 LIST_FOREACH(ic, chead, ic_list) {
898 if (inp->inp_flags & INP_PLACEMARKER)
901 if (!INP_ISIPV6(inp))
903 if (inp->inp_socket != NULL)
904 cred = inp->inp_socket->so_cred;
908 if (cred != NULL && jailed(cred)) {
912 jsin6.sin6_addr = *laddr;
913 if (!jailed_ip(cred->cr_prison,
914 (struct sockaddr *)&jsin6))
918 if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_faddr) &&
919 inp->inp_lport == lport) {
920 if (faith && (inp->inp_flags & INP_FAITH) == 0)
922 if (IN6_ARE_ADDR_EQUAL(&inp->in6p_laddr,
924 if (cred != NULL && jailed(cred)) {
927 REL_PCBINFO_TOKEN(pcbinfo);
930 } else if (IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr)) {
931 if (cred != NULL && jailed(cred))
938 REL_PCBINFO_TOKEN(pcbinfo);
940 if (local_wild != NULL)
954 init_sin6(struct sockaddr_in6 *sin6, struct mbuf *m)
958 ip = mtod(m, struct ip6_hdr *);
959 bzero(sin6, sizeof(*sin6));
960 sin6->sin6_len = sizeof(*sin6);
961 sin6->sin6_family = AF_INET6;
962 sin6->sin6_addr = ip->ip6_src;
963 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
964 sin6->sin6_addr.s6_addr16[1] = 0;
965 sin6->sin6_scope_id =
966 (m->m_pkthdr.rcvif && IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
967 ? m->m_pkthdr.rcvif->if_index : 0;
973 in6_savefaddr(struct socket *so, const struct sockaddr *faddr)
975 struct sockaddr_in6 *sin6;
977 KASSERT(faddr->sa_family == AF_INET6,
978 ("not AF_INET6 faddr %d", faddr->sa_family));
980 sin6 = kmalloc(sizeof(*sin6), M_SONAME, M_WAITOK | M_ZERO);
981 sin6->sin6_family = AF_INET6;
982 sin6->sin6_len = sizeof(*sin6);
984 sin6->sin6_port = ((const struct sockaddr_in6 *)faddr)->sin6_port;
985 sin6->sin6_addr = ((const struct sockaddr_in6 *)faddr)->sin6_addr;
987 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
988 sin6->sin6_scope_id = ntohs(sin6->sin6_addr.s6_addr16[1]);
990 sin6->sin6_scope_id = 0; /*XXX*/
991 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr))
992 sin6->sin6_addr.s6_addr16[1] = 0;
994 so->so_faddr = (struct sockaddr *)sin6;