2 * Copyright (c) 2004 Jeffrey M. Hsu. All rights reserved.
3 * Copyright (c) 2004 The DragonFly Project. All rights reserved.
5 * This code is derived from software contributed to The DragonFly Project
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of The DragonFly Project nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific, prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
30 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
36 * The Regents of the University of California. All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
41 * 1. Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
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52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
53 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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62 * @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95
63 * $FreeBSD: src/sys/netinet/udp_usrreq.c,v 1.64.2.18 2003/01/24 05:11:34 sam Exp $
66 #include "opt_ipsec.h"
67 #include "opt_inet6.h"
69 #include <sys/param.h>
70 #include <sys/systm.h>
71 #include <sys/kernel.h>
72 #include <sys/malloc.h>
74 #include <sys/domain.h>
77 #include <sys/protosw.h>
78 #include <sys/socket.h>
79 #include <sys/socketvar.h>
80 #include <sys/sysctl.h>
81 #include <sys/syslog.h>
82 #include <sys/in_cksum.h>
85 #include <sys/thread2.h>
86 #include <sys/socketvar2.h>
87 #include <sys/serialize.h>
89 #include <machine/stdarg.h>
92 #include <net/route.h>
93 #include <net/netmsg2.h>
94 #include <net/netisr2.h>
96 #include <netinet/in.h>
97 #include <netinet/in_systm.h>
98 #include <netinet/ip.h>
100 #include <netinet/ip6.h>
102 #include <netinet/in_pcb.h>
103 #include <netinet/in_var.h>
104 #include <netinet/ip_var.h>
106 #include <netinet6/ip6_var.h>
108 #include <netinet/ip_icmp.h>
109 #include <netinet/icmp_var.h>
110 #include <netinet/udp.h>
111 #include <netinet/udp_var.h>
114 #include <netproto/ipsec/ipsec.h>
118 #include <netinet6/ipsec.h>
121 #define MSGF_UDP_SEND MSGF_PROTO1
123 #define UDP_KTR_STRING "inp=%p"
124 #define UDP_KTR_ARGS struct inpcb *inp
127 #define KTR_UDP KTR_ALL
130 KTR_INFO_MASTER(udp);
131 KTR_INFO(KTR_UDP, udp, send_beg, 0, UDP_KTR_STRING, UDP_KTR_ARGS);
132 KTR_INFO(KTR_UDP, udp, send_end, 1, UDP_KTR_STRING, UDP_KTR_ARGS);
133 KTR_INFO(KTR_UDP, udp, send_ipout, 2, UDP_KTR_STRING, UDP_KTR_ARGS);
134 KTR_INFO(KTR_UDP, udp, redisp_ipout_beg, 3, UDP_KTR_STRING, UDP_KTR_ARGS);
135 KTR_INFO(KTR_UDP, udp, redisp_ipout_end, 4, UDP_KTR_STRING, UDP_KTR_ARGS);
136 KTR_INFO(KTR_UDP, udp, send_redisp, 5, UDP_KTR_STRING, UDP_KTR_ARGS);
137 KTR_INFO(KTR_UDP, udp, send_inswildcard, 6, UDP_KTR_STRING, UDP_KTR_ARGS);
139 #define logudp(name, inp) KTR_LOG(udp_##name, inp)
142 * UDP protocol implementation.
143 * Per RFC 768, August, 1980.
146 static int udpcksum = 1;
148 static int udpcksum = 0; /* XXX */
150 SYSCTL_INT(_net_inet_udp, UDPCTL_CHECKSUM, checksum, CTLFLAG_RW,
151 &udpcksum, 0, "Enable checksumming of UDP packets");
154 SYSCTL_INT(_net_inet_udp, OID_AUTO, log_in_vain, CTLFLAG_RW,
155 &log_in_vain, 0, "Log all incoming UDP packets");
157 static int blackhole = 0;
158 SYSCTL_INT(_net_inet_udp, OID_AUTO, blackhole, CTLFLAG_RW,
159 &blackhole, 0, "Do not send port unreachables for refused connects");
161 static int strict_mcast_mship = 1;
162 SYSCTL_INT(_net_inet_udp, OID_AUTO, strict_mcast_mship, CTLFLAG_RW,
163 &strict_mcast_mship, 0, "Only send multicast to member sockets");
165 int udp_sosend_async = 1;
166 SYSCTL_INT(_net_inet_udp, OID_AUTO, sosend_async, CTLFLAG_RW,
167 &udp_sosend_async, 0, "UDP asynchronized pru_send");
169 int udp_sosend_prepend = 1;
170 SYSCTL_INT(_net_inet_udp, OID_AUTO, sosend_prepend, CTLFLAG_RW,
171 &udp_sosend_prepend, 0,
172 "Prepend enough space for proto and link header in pru_send");
174 static int udp_reuseport_ext = 1;
175 SYSCTL_INT(_net_inet_udp, OID_AUTO, reuseport_ext, CTLFLAG_RW,
176 &udp_reuseport_ext, 0, "SO_REUSEPORT extension");
178 struct inpcbinfo udbinfo[MAXCPU];
181 #define UDBHASHSIZE 16
184 struct udpstat udpstat_percpu[MAXCPU] __cachealign;
188 struct sockaddr_in6 uin6_sin;
189 u_char uin6_init_done : 1;
192 struct ip6_hdr uip6_ip6;
193 u_char uip6_init_done : 1;
200 static void udp_append (struct inpcb *last, struct ip *ip,
201 struct mbuf *n, int off, struct sockaddr_in *udp_in,
202 struct udp_in6 *, struct udp_ip6 *);
204 static void ip_2_ip6_hdr (struct ip6_hdr *ip6, struct ip *ip);
207 static int udp_connect_oncpu(struct inpcb *inp, struct sockaddr_in *sin,
208 struct sockaddr_in *if_sin);
210 static boolean_t udp_inswildcardhash(struct inpcb *inp,
211 struct netmsg_base *msg, int error);
212 static void udp_remwildcardhash(struct inpcb *inp);
215 udp_reset_route(struct inpcb *inp)
217 struct route *ro = &inp->inp_route;
219 if (ro->ro_rt != NULL)
221 bzero(ro, sizeof(*ro));
227 struct inpcbportinfo *portinfo;
230 portinfo = kmalloc_cachealign(sizeof(*portinfo) * ncpus2, M_PCB,
233 for (cpu = 0; cpu < ncpus2; cpu++) {
234 struct inpcbinfo *uicb = &udbinfo[cpu];
238 * UDP pcb list, wildcard hash table and localgroup hash
241 in_pcbinfo_init(uicb, cpu, TRUE);
242 uicb->hashbase = hashinit(UDBHASHSIZE, M_PCB, &uicb->hashmask);
244 in_pcbportinfo_init(&portinfo[cpu], UDBHASHSIZE, TRUE, cpu);
245 uicb->portinfo = portinfo;
246 uicb->portinfo_mask = ncpus2_mask;
248 uicb->wildcardhashbase = hashinit(UDBHASHSIZE, M_PCB,
249 &uicb->wildcardhashmask);
250 uicb->localgrphashbase = hashinit(UDBHASHSIZE, M_PCB,
251 &uicb->localgrphashmask);
253 uicb->ipi_size = sizeof(struct inpcb);
257 * Initialize UDP statistics counters for each CPU.
259 for (cpu = 0; cpu < ncpus; ++cpu)
260 bzero(&udpstat_percpu[cpu], sizeof(struct udpstat));
264 sysctl_udpstat(SYSCTL_HANDLER_ARGS)
268 for (cpu = 0; cpu < ncpus; ++cpu) {
269 if ((error = SYSCTL_OUT(req, &udpstat_percpu[cpu],
270 sizeof(struct udpstat))))
272 if ((error = SYSCTL_IN(req, &udpstat_percpu[cpu],
273 sizeof(struct udpstat))))
279 SYSCTL_PROC(_net_inet_udp, UDPCTL_STATS, stats, (CTLTYPE_OPAQUE | CTLFLAG_RW),
280 0, 0, sysctl_udpstat, "S,udpstat", "UDP statistics");
283 * Check multicast packets to make sure they are only sent to sockets with
284 * multicast memberships for the packet's destination address and arrival
285 * interface. Multicast packets to multicast-unaware sockets are also
288 * Returns 0 if the packet is acceptable, -1 if it is not.
291 check_multicast_membership(const struct ip *ip, const struct inpcb *inp,
292 const struct mbuf *m)
294 const struct ip_moptions *mopt;
297 if (strict_mcast_mship == 0 ||
298 !IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) {
302 KASSERT(&curthread->td_msgport == netisr_cpuport(0),
303 ("multicast input not in netisr0"));
305 mopt = inp->inp_moptions;
308 for (mshipno = 0; mshipno < mopt->imo_num_memberships; ++mshipno) {
309 const struct in_multi *maddr = mopt->imo_membership[mshipno];
311 if (ip->ip_dst.s_addr == maddr->inm_addr.s_addr &&
312 m->m_pkthdr.rcvif == maddr->inm_ifp) {
319 struct udp_mcast_arg {
325 struct sockaddr_in *udp_in;
327 struct udp_in6 *udp_in6;
328 struct udp_ip6 *udp_ip6;
333 udp_mcast_input(struct udp_mcast_arg *arg)
335 struct inpcb *inp = arg->inp;
336 struct inpcb *last = arg->last;
337 struct ip *ip = arg->ip;
338 struct mbuf *m = arg->m;
340 if (check_multicast_membership(ip, inp, m) < 0)
341 return ERESTART; /* caller continue */
347 /* check AH/ESP integrity. */
348 if (ipsec4_in_reject_so(m, last->inp_socket))
349 ipsecstat.in_polvio++;
350 /* do not inject data to pcb */
354 /* check AH/ESP integrity. */
355 if (ipsec4_in_reject(m, last))
358 #endif /*FAST_IPSEC*/
359 if ((n = m_copypacket(m, MB_DONTWAIT)) != NULL)
360 udp_append(last, ip, n,
361 arg->iphlen + sizeof(struct udphdr),
364 arg->udp_in6, arg->udp_ip6
370 arg->last = last = inp;
373 * Don't look for additional matches if this one does
374 * not have either the SO_REUSEPORT or SO_REUSEADDR
375 * socket options set. This heuristic avoids searching
376 * through all pcbs in the common case of a non-shared
377 * port. It * assumes that an application will never
378 * clear these options after setting them.
380 if (!(last->inp_socket->so_options &
381 (SO_REUSEPORT | SO_REUSEADDR)))
382 return EJUSTRETURN; /* caller stop */
387 udp_input(struct mbuf **mp, int *offp, int proto)
389 struct sockaddr_in udp_in = { sizeof udp_in, AF_INET };
391 struct udp_in6 udp_in6 = {
392 { sizeof udp_in6.uin6_sin, AF_INET6 }, 0
394 struct udp_ip6 udp_ip6;
402 struct mbuf *opts = NULL;
405 struct sockaddr *append_sa;
406 struct inpcbinfo *pcbinfo = &udbinfo[mycpuid];
413 udp_stat.udps_ipackets++;
416 * Strip IP options, if any; should skip this,
417 * make available to user, and use on returned packets,
418 * but we don't yet have a way to check the checksum
419 * with options still present.
421 if (iphlen > sizeof(struct ip)) {
423 iphlen = sizeof(struct ip);
427 * IP and UDP headers are together in first mbuf.
428 * Already checked and pulled up in ip_demux().
430 KASSERT(m->m_len >= iphlen + sizeof(struct udphdr),
431 ("UDP header not in one mbuf"));
433 ip = mtod(m, struct ip *);
434 uh = (struct udphdr *)((caddr_t)ip + iphlen);
436 /* destination port of 0 is illegal, based on RFC768. */
437 if (uh->uh_dport == 0)
441 * Make mbuf data length reflect UDP length.
442 * If not enough data to reflect UDP length, drop.
444 len = ntohs((u_short)uh->uh_ulen);
445 if (ip->ip_len != len) {
446 if (len > ip->ip_len || len < sizeof(struct udphdr)) {
447 udp_stat.udps_badlen++;
450 m_adj(m, len - ip->ip_len);
451 /* ip->ip_len = len; */
454 * Save a copy of the IP header in case we want restore it
455 * for sending an ICMP error message in response.
460 * Checksum extended UDP header and data.
463 if (m->m_pkthdr.csum_flags & CSUM_DATA_VALID) {
464 if (m->m_pkthdr.csum_flags & CSUM_PSEUDO_HDR)
465 uh->uh_sum = m->m_pkthdr.csum_data;
467 uh->uh_sum = in_pseudo(ip->ip_src.s_addr,
468 ip->ip_dst.s_addr, htonl((u_short)len +
469 m->m_pkthdr.csum_data + IPPROTO_UDP));
470 uh->uh_sum ^= 0xffff;
474 bcopy(((struct ipovly *)ip)->ih_x1, b, 9);
475 bzero(((struct ipovly *)ip)->ih_x1, 9);
476 ((struct ipovly *)ip)->ih_len = uh->uh_ulen;
477 uh->uh_sum = in_cksum(m, len + sizeof(struct ip));
478 bcopy(b, ((struct ipovly *)ip)->ih_x1, 9);
481 udp_stat.udps_badsum++;
483 return(IPPROTO_DONE);
486 udp_stat.udps_nosum++;
488 if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) ||
489 in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) {
490 struct inpcbhead *connhead;
491 struct inpcontainer *ic, *ic_marker;
492 struct inpcontainerhead *ichead;
493 struct udp_mcast_arg arg;
498 * Deliver a multicast or broadcast datagram to *all* sockets
499 * for which the local and remote addresses and ports match
500 * those of the incoming datagram. This allows more than
501 * one process to receive multi/broadcasts on the same port.
502 * (This really ought to be done for unicast datagrams as
503 * well, but that would cause problems with existing
504 * applications that open both address-specific sockets and
505 * a wildcard socket listening to the same port -- they would
506 * end up receiving duplicates of every unicast datagram.
507 * Those applications open the multiple sockets to overcome an
508 * inadequacy of the UDP socket interface, but for backwards
509 * compatibility we avoid the problem here rather than
510 * fixing the interface. Maybe 4.5BSD will remedy this?)
514 * Construct sockaddr format source address.
516 udp_in.sin_port = uh->uh_sport;
517 udp_in.sin_addr = ip->ip_src;
518 arg.udp_in = &udp_in;
520 * Locate pcb(s) for datagram.
521 * (Algorithm copied from raw_intr().)
525 udp_in6.uin6_init_done = udp_ip6.uip6_init_done = 0;
526 arg.udp_in6 = &udp_in6;
527 arg.udp_ip6 = &udp_ip6;
531 connhead = &pcbinfo->hashbase[
532 INP_PCBCONNHASH(ip->ip_src.s_addr, uh->uh_sport,
533 ip->ip_dst.s_addr, uh->uh_dport, pcbinfo->hashmask)];
534 LIST_FOREACH(inp, connhead, inp_hash) {
536 if (!(inp->inp_vflag & INP_IPV4))
539 if (!in_hosteq(inp->inp_faddr, ip->ip_src) ||
540 !in_hosteq(inp->inp_laddr, ip->ip_dst) ||
541 inp->inp_fport != uh->uh_sport ||
542 inp->inp_lport != uh->uh_dport)
550 error = udp_mcast_input(&arg);
551 if (error == ERESTART)
555 if (error == EJUSTRETURN)
559 ichead = &pcbinfo->wildcardhashbase[
560 INP_PCBWILDCARDHASH(uh->uh_dport,
561 pcbinfo->wildcardhashmask)];
562 ic_marker = in_pcbcontainer_marker(mycpuid);
564 GET_PCBINFO_TOKEN(pcbinfo);
565 LIST_INSERT_HEAD(ichead, ic_marker, ic_list);
566 while ((ic = LIST_NEXT(ic_marker, ic_list)) != NULL) {
567 LIST_REMOVE(ic_marker, ic_list);
568 LIST_INSERT_AFTER(ic, ic_marker, ic_list);
571 if (inp->inp_flags & INP_PLACEMARKER)
574 if (!(inp->inp_vflag & INP_IPV4))
577 if (inp->inp_lport != uh->uh_dport)
579 if (inp->inp_laddr.s_addr != INADDR_ANY &&
580 inp->inp_laddr.s_addr != ip->ip_dst.s_addr)
588 error = udp_mcast_input(&arg);
589 if (error == ERESTART)
593 if (error == EJUSTRETURN)
596 LIST_REMOVE(ic_marker, ic_list);
597 REL_PCBINFO_TOKEN(pcbinfo);
601 * No matching pcb found; discard datagram.
602 * (No need to send an ICMP Port Unreachable
603 * for a broadcast or multicast datgram.)
605 udp_stat.udps_noportbcast++;
609 /* check AH/ESP integrity. */
610 if (ipsec4_in_reject_so(m, last->inp_socket)) {
611 ipsecstat.in_polvio++;
616 /* check AH/ESP integrity. */
617 if (ipsec4_in_reject(m, last))
619 #endif /*FAST_IPSEC*/
620 udp_append(last, ip, m, iphlen + sizeof(struct udphdr),
628 return(IPPROTO_DONE);
631 * Locate pcb for datagram.
633 inp = in_pcblookup_pkthash(pcbinfo, ip->ip_src, uh->uh_sport,
634 ip->ip_dst, uh->uh_dport, TRUE, m->m_pkthdr.rcvif,
635 udp_reuseport_ext ? m : NULL);
638 char buf[sizeof "aaa.bbb.ccc.ddd"];
640 strcpy(buf, inet_ntoa(ip->ip_dst));
642 "Connection attempt to UDP %s:%d from %s:%d\n",
643 buf, ntohs(uh->uh_dport), inet_ntoa(ip->ip_src),
644 ntohs(uh->uh_sport));
646 udp_stat.udps_noport++;
647 if (m->m_flags & (M_BCAST | M_MCAST)) {
648 udp_stat.udps_noportbcast++;
654 if (badport_bandlim(BANDLIM_ICMP_UNREACH) < 0)
658 ip->ip_len += iphlen;
659 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
660 return(IPPROTO_DONE);
663 if (ipsec4_in_reject_so(m, inp->inp_socket)) {
664 ipsecstat.in_polvio++;
669 if (ipsec4_in_reject(m, inp))
671 #endif /*FAST_IPSEC*/
673 * Check the minimum TTL for socket.
675 if (ip->ip_ttl < inp->inp_ip_minttl)
679 * Construct sockaddr format source address.
680 * Stuff source address and datagram in user buffer.
682 udp_in.sin_port = uh->uh_sport;
683 udp_in.sin_addr = ip->ip_src;
684 if ((inp->inp_flags & INP_CONTROLOPTS) ||
685 (inp->inp_socket->so_options & SO_TIMESTAMP)) {
687 if (inp->inp_vflag & INP_IPV6) {
690 ip_2_ip6_hdr(&udp_ip6.uip6_ip6, ip);
691 savedflags = inp->inp_flags;
692 inp->inp_flags &= ~INP_UNMAPPABLEOPTS;
693 ip6_savecontrol(inp, &opts, &udp_ip6.uip6_ip6, m);
694 inp->inp_flags = savedflags;
697 ip_savecontrol(inp, &opts, ip, m);
699 m_adj(m, iphlen + sizeof(struct udphdr));
701 if (inp->inp_vflag & INP_IPV6) {
702 in6_sin_2_v4mapsin6(&udp_in, &udp_in6.uin6_sin);
703 append_sa = (struct sockaddr *)&udp_in6;
706 append_sa = (struct sockaddr *)&udp_in;
708 lwkt_gettoken(&inp->inp_socket->so_rcv.ssb_token);
709 if (ssb_appendaddr(&inp->inp_socket->so_rcv, append_sa, m, opts) == 0) {
710 lwkt_reltoken(&inp->inp_socket->so_rcv.ssb_token);
711 udp_stat.udps_fullsock++;
714 lwkt_reltoken(&inp->inp_socket->so_rcv.ssb_token);
715 sorwakeup(inp->inp_socket);
716 return(IPPROTO_DONE);
721 return(IPPROTO_DONE);
726 ip_2_ip6_hdr(struct ip6_hdr *ip6, struct ip *ip)
728 bzero(ip6, sizeof *ip6);
730 ip6->ip6_vfc = IPV6_VERSION;
731 ip6->ip6_plen = ip->ip_len;
732 ip6->ip6_nxt = ip->ip_p;
733 ip6->ip6_hlim = ip->ip_ttl;
734 ip6->ip6_src.s6_addr32[2] = ip6->ip6_dst.s6_addr32[2] =
736 ip6->ip6_src.s6_addr32[3] = ip->ip_src.s_addr;
737 ip6->ip6_dst.s6_addr32[3] = ip->ip_dst.s_addr;
742 * subroutine of udp_input(), mainly for source code readability.
743 * caller must properly init udp_ip6 and udp_in6 beforehand.
746 udp_append(struct inpcb *last, struct ip *ip, struct mbuf *n, int off,
747 struct sockaddr_in *udp_in,
748 struct udp_in6 *udp_in6, struct udp_ip6 *udp_ip6)
750 struct sockaddr *append_sa;
751 struct mbuf *opts = NULL;
754 if (last->inp_flags & INP_CONTROLOPTS ||
755 last->inp_socket->so_options & SO_TIMESTAMP) {
757 if (last->inp_vflag & INP_IPV6) {
760 if (udp_ip6->uip6_init_done == 0) {
761 ip_2_ip6_hdr(&udp_ip6->uip6_ip6, ip);
762 udp_ip6->uip6_init_done = 1;
764 savedflags = last->inp_flags;
765 last->inp_flags &= ~INP_UNMAPPABLEOPTS;
766 ip6_savecontrol(last, &opts, &udp_ip6->uip6_ip6, n);
767 last->inp_flags = savedflags;
770 ip_savecontrol(last, &opts, ip, n);
773 if (last->inp_vflag & INP_IPV6) {
774 if (udp_in6->uin6_init_done == 0) {
775 in6_sin_2_v4mapsin6(udp_in, &udp_in6->uin6_sin);
776 udp_in6->uin6_init_done = 1;
778 append_sa = (struct sockaddr *)&udp_in6->uin6_sin;
781 append_sa = (struct sockaddr *)udp_in;
784 lwkt_gettoken(&last->inp_socket->so_rcv.ssb_token);
785 ret = ssb_appendaddr(&last->inp_socket->so_rcv, append_sa, n, opts);
786 lwkt_reltoken(&last->inp_socket->so_rcv.ssb_token);
791 udp_stat.udps_fullsock++;
793 sorwakeup(last->inp_socket);
798 * Notify a udp user of an asynchronous error;
799 * just wake up so that he can collect error status.
802 udp_notify(struct inpcb *inp, int error)
804 inp->inp_socket->so_error = error;
805 sorwakeup(inp->inp_socket);
806 sowwakeup(inp->inp_socket);
809 struct netmsg_udp_notify {
810 struct netmsg_base base;
811 void (*nm_notify)(struct inpcb *, int);
812 struct in_addr nm_faddr;
817 udp_notifyall_oncpu(netmsg_t msg)
819 struct netmsg_udp_notify *nm = (struct netmsg_udp_notify *)msg;
820 int nextcpu, cpu = mycpuid;
822 in_pcbnotifyall(&udbinfo[cpu], nm->nm_faddr, nm->nm_arg, nm->nm_notify);
825 if (nextcpu < ncpus2)
826 lwkt_forwardmsg(netisr_cpuport(nextcpu), &nm->base.lmsg);
828 lwkt_replymsg(&nm->base.lmsg, 0);
832 udp_ctlinput(netmsg_t msg)
834 struct sockaddr *sa = msg->ctlinput.nm_arg;
835 struct ip *ip = msg->ctlinput.nm_extra;
836 int cmd = msg->ctlinput.nm_cmd;
838 void (*notify) (struct inpcb *, int) = udp_notify;
839 struct in_addr faddr;
842 faddr = ((struct sockaddr_in *)sa)->sin_addr;
843 if (sa->sa_family != AF_INET || faddr.s_addr == INADDR_ANY)
846 if (PRC_IS_REDIRECT(cmd)) {
848 notify = in_rtchange;
849 } else if (cmd == PRC_HOSTDEAD) {
851 } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) {
856 uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
857 inp = in_pcblookup_hash(&udbinfo[mycpuid], faddr, uh->uh_dport,
858 ip->ip_src, uh->uh_sport, 0, NULL);
859 if (inp != NULL && inp->inp_socket != NULL)
860 (*notify)(inp, inetctlerrmap[cmd]);
862 struct netmsg_udp_notify *nm;
864 KKASSERT(&curthread->td_msgport == netisr_cpuport(0));
865 nm = kmalloc(sizeof(*nm), M_LWKTMSG, M_INTWAIT);
866 netmsg_init(&nm->base, NULL, &netisr_afree_rport,
867 0, udp_notifyall_oncpu);
868 nm->nm_faddr = faddr;
869 nm->nm_arg = inetctlerrmap[cmd];
870 nm->nm_notify = notify;
871 lwkt_sendmsg(netisr_cpuport(0), &nm->base.lmsg);
874 lwkt_replymsg(&msg->lmsg, 0);
877 SYSCTL_PROC(_net_inet_udp, UDPCTL_PCBLIST, pcblist, CTLFLAG_RD, udbinfo, 0,
878 in_pcblist_global_ncpus2, "S,xinpcb", "List of active UDP sockets");
881 udp_getcred(SYSCTL_HANDLER_ARGS)
883 struct sockaddr_in addrs[2];
884 struct ucred cred0, *cred = NULL;
886 int error, cpu, origcpu;
888 error = priv_check(req->td, PRIV_ROOT);
891 error = SYSCTL_IN(req, addrs, sizeof addrs);
896 cpu = udp_addrcpu(addrs[1].sin_addr.s_addr, addrs[1].sin_port,
897 addrs[0].sin_addr.s_addr, addrs[0].sin_port);
899 lwkt_migratecpu(cpu);
901 inp = in_pcblookup_hash(&udbinfo[cpu],
902 addrs[1].sin_addr, addrs[1].sin_port,
903 addrs[0].sin_addr, addrs[0].sin_port, TRUE, NULL);
904 if (inp == NULL || inp->inp_socket == NULL) {
906 } else if (inp->inp_socket->so_cred != NULL) {
907 cred0 = *(inp->inp_socket->so_cred);
911 lwkt_migratecpu(origcpu);
916 return SYSCTL_OUT(req, cred, sizeof(struct ucred));
918 SYSCTL_PROC(_net_inet_udp, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW,
919 0, 0, udp_getcred, "S,ucred", "Get the ucred of a UDP connection");
922 udp_send_redispatch(netmsg_t msg)
924 struct mbuf *m = msg->send.nm_m;
925 int pru_flags = msg->send.nm_flags;
926 struct inpcb *inp = msg->send.base.nm_so->so_pcb;
927 struct mbuf *m_opt = msg->send.nm_control; /* XXX save ipopt */
928 int flags = msg->send.nm_priv; /* ip_output flags */
931 logudp(redisp_ipout_beg, inp);
934 * - Don't use inp route cache. It should only be used in the
936 * - Access to inp_moptions should be safe, since multicast UDP
937 * datagrams are redispatched to netisr0 and inp_moptions is
938 * changed only in netisr0.
940 error = ip_output(m, m_opt, NULL, flags, inp->inp_moptions, inp);
941 if ((pru_flags & PRUS_NOREPLY) == 0)
942 lwkt_replymsg(&msg->send.base.lmsg, error);
945 /* Free saved ip options, if any */
949 logudp(redisp_ipout_end, inp);
953 udp_send(netmsg_t msg)
955 struct socket *so = msg->send.base.nm_so;
956 struct mbuf *m = msg->send.nm_m;
957 struct sockaddr *dstaddr = msg->send.nm_addr;
958 int pru_flags = msg->send.nm_flags;
959 struct inpcb *inp = so->so_pcb;
960 struct thread *td = msg->send.nm_td;
964 int len = m->m_pkthdr.len;
965 struct sockaddr_in *sin; /* really is initialized before use */
968 KKASSERT(msg->send.nm_control == NULL);
970 logudp(send_beg, inp);
977 if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) {
982 if (inp->inp_lport == 0) { /* unbound socket */
985 error = in_pcbbind(inp, NULL, td);
990 * Need to call udp_send again, after this inpcb is
991 * inserted into wildcard hash table.
993 msg->send.base.lmsg.ms_flags |= MSGF_UDP_SEND;
994 forwarded = udp_inswildcardhash(inp, &msg->send.base, 0);
997 * The message is further forwarded, so we are
1000 logudp(send_inswildcard, inp);
1005 if (dstaddr != NULL) { /* destination address specified */
1006 if (inp->inp_faddr.s_addr != INADDR_ANY) {
1007 /* already connected */
1011 sin = (struct sockaddr_in *)dstaddr;
1012 if (!prison_remote_ip(td, (struct sockaddr *)&sin)) {
1013 error = EAFNOSUPPORT; /* IPv6 only jail */
1017 if (inp->inp_faddr.s_addr == INADDR_ANY) {
1018 /* no destination specified and not already connected */
1026 * Calculate data length and get a mbuf
1027 * for UDP and IP headers.
1029 M_PREPEND(m, sizeof(struct udpiphdr), MB_DONTWAIT);
1036 * Fill in mbuf with extended UDP header
1037 * and addresses and length put into network format.
1039 ui = mtod(m, struct udpiphdr *);
1040 bzero(ui->ui_x1, sizeof ui->ui_x1); /* XXX still needed? */
1041 ui->ui_pr = IPPROTO_UDP;
1044 * Set destination address.
1046 if (dstaddr != NULL) { /* use specified destination */
1047 ui->ui_dst = sin->sin_addr;
1048 ui->ui_dport = sin->sin_port;
1049 } else { /* use connected destination */
1050 ui->ui_dst = inp->inp_faddr;
1051 ui->ui_dport = inp->inp_fport;
1055 * Set source address.
1057 if (inp->inp_laddr.s_addr == INADDR_ANY ||
1058 IN_MULTICAST(ntohl(inp->inp_laddr.s_addr))) {
1059 struct sockaddr_in *if_sin;
1061 if (dstaddr == NULL) {
1063 * connect() had (or should have) failed because
1064 * the interface had no IP address, but the
1065 * application proceeded to call send() anyways.
1071 /* Look up outgoing interface. */
1072 error = in_pcbladdr_find(inp, dstaddr, &if_sin, td, 1);
1075 ui->ui_src = if_sin->sin_addr; /* use address of interface */
1077 ui->ui_src = inp->inp_laddr; /* use non-null bound address */
1079 ui->ui_sport = inp->inp_lport;
1080 KASSERT(inp->inp_lport != 0, ("inp lport should have been bound"));
1083 * Release the original thread, since it is no longer used
1085 if (pru_flags & PRUS_HELDTD) {
1087 pru_flags &= ~PRUS_HELDTD;
1090 * Free the dest address, since it is no longer needed
1092 if (pru_flags & PRUS_FREEADDR) {
1093 kfree(dstaddr, M_SONAME);
1094 pru_flags &= ~PRUS_FREEADDR;
1097 ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr));
1100 * Set up checksum and output datagram.
1103 ui->ui_sum = in_pseudo(ui->ui_src.s_addr, ui->ui_dst.s_addr,
1104 htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));
1105 m->m_pkthdr.csum_flags = CSUM_UDP;
1106 m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
1107 m->m_pkthdr.csum_thlen = sizeof(struct udphdr);
1111 ((struct ip *)ui)->ip_len = sizeof(struct udpiphdr) + len;
1112 ((struct ip *)ui)->ip_ttl = inp->inp_ip_ttl; /* XXX */
1113 ((struct ip *)ui)->ip_tos = inp->inp_ip_tos; /* XXX */
1114 udp_stat.udps_opackets++;
1116 flags = IP_DEBUGROUTE |
1117 (inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST));
1118 if (pru_flags & PRUS_DONTROUTE)
1119 flags |= SO_DONTROUTE;
1121 if (inp->inp_flags & INP_CONNECTED) {
1123 * For connected socket, this datagram has already
1124 * been in the correct netisr; no need to rehash.
1129 cpu = udp_addrcpu(ui->ui_dst.s_addr, ui->ui_dport,
1130 ui->ui_src.s_addr, ui->ui_sport);
1131 if (cpu != mycpuid) {
1132 struct mbuf *m_opt = NULL;
1133 struct netmsg_pru_send *smsg;
1134 struct lwkt_port *port = netisr_cpuport(cpu);
1137 * Not on the CPU that matches this UDP datagram hash;
1138 * redispatch to the correct CPU to do the ip_output().
1140 if (inp->inp_options != NULL) {
1142 * If there are ip options, then save a copy,
1143 * since accessing inp_options on other CPUs'
1146 * XXX optimize this?
1148 m_opt = m_copym(inp->inp_options, 0, M_COPYALL,
1151 if ((pru_flags & PRUS_NOREPLY) == 0) {
1153 * Change some parts of the original netmsg and
1154 * forward it to the target netisr.
1156 * NOTE: so_port MUST NOT be checked in the target
1160 smsg->nm_priv = flags; /* ip_output flags */
1162 smsg->nm_control = m_opt; /* XXX save ipopt */
1163 smsg->base.lmsg.ms_flags |= MSGF_IGNSOPORT;
1164 smsg->base.nm_dispatch = udp_send_redispatch;
1165 lwkt_forwardmsg(port, &smsg->base.lmsg);
1168 * Recreate the netmsg, since the original mbuf
1169 * could have been changed. And send it to the
1172 * NOTE: so_port MUST NOT be checked in the target
1175 smsg = &m->m_hdr.mh_sndmsg;
1176 netmsg_init(&smsg->base, so, &netisr_apanic_rport,
1177 MSGF_IGNSOPORT, udp_send_redispatch);
1178 smsg->nm_priv = flags; /* ip_output flags */
1179 smsg->nm_flags = pru_flags;
1181 smsg->nm_control = m_opt; /* XXX save ipopt */
1182 lwkt_sendmsg(port, &smsg->base.lmsg);
1185 /* This UDP datagram is redispatched; done */
1186 logudp(send_redisp, inp);
1191 logudp(send_ipout, inp);
1192 error = ip_output(m, inp->inp_options, &inp->inp_route, flags,
1193 inp->inp_moptions, inp);
1200 if (pru_flags & PRUS_HELDTD)
1202 if (pru_flags & PRUS_FREEADDR)
1203 kfree(dstaddr, M_SONAME);
1204 if ((pru_flags & PRUS_NOREPLY) == 0)
1205 lwkt_replymsg(&msg->send.base.lmsg, error);
1207 logudp(send_end, inp);
1210 u_long udp_sendspace = 9216; /* really max datagram size */
1211 /* 40 1K datagrams */
1212 SYSCTL_INT(_net_inet_udp, UDPCTL_MAXDGRAM, maxdgram, CTLFLAG_RW,
1213 &udp_sendspace, 0, "Maximum outgoing UDP datagram size");
1215 u_long udp_recvspace = 40 * (1024 +
1217 sizeof(struct sockaddr_in6)
1219 sizeof(struct sockaddr_in)
1222 SYSCTL_INT(_net_inet_udp, UDPCTL_RECVSPACE, recvspace, CTLFLAG_RW,
1223 &udp_recvspace, 0, "Maximum incoming UDP datagram size");
1226 * This should never happen, since UDP socket does not support
1227 * connection acception (SO_ACCEPTCONN, i.e. listen(2)).
1230 udp_abort(netmsg_t msg __unused)
1232 panic("udp_abort is called");
1236 udp_attach(netmsg_t msg)
1238 struct socket *so = msg->attach.base.nm_so;
1239 struct pru_attach_info *ai = msg->attach.nm_ai;
1248 error = soreserve(so, udp_sendspace, udp_recvspace, ai->sb_rlimit);
1252 error = in_pcballoc(so, &udbinfo[mycpuid]);
1256 inp = (struct inpcb *)so->so_pcb;
1257 inp->inp_vflag |= INP_IPV4;
1258 inp->inp_ip_ttl = ip_defttl;
1261 lwkt_replymsg(&msg->attach.base.lmsg, error);
1265 udp_inswildcardhash_oncpu(struct inpcb *inp)
1269 KASSERT(inp->inp_pcbinfo == &udbinfo[mycpuid],
1270 ("not on owner cpu"));
1272 in_pcbinswildcardhash(inp);
1273 for (cpu = 0; cpu < ncpus2; ++cpu) {
1274 if (cpu == mycpuid) {
1276 * This inpcb has been inserted by the above
1277 * in_pcbinswildcardhash().
1281 in_pcbinswildcardhash_oncpu(inp, &udbinfo[cpu]);
1284 /* TODO need to change port again, if SO_REUSEPORT */
1289 udp_inswildcardhash_dispatch(netmsg_t msg)
1291 struct inpcb *inp = msg->base.nm_so->so_pcb;
1292 lwkt_msg_t lmsg = &msg->base.lmsg;
1293 boolean_t forwarded;
1295 KASSERT(inp->inp_lport != 0, ("local port not set yet"));
1296 KASSERT((ntohs(inp->inp_lport) & ncpus2_mask) == mycpuid,
1297 ("not target cpu"));
1299 in_pcblink(inp, &udbinfo[mycpuid]);
1301 forwarded = udp_inswildcardhash_oncpu(inp);
1303 /* The message is further forwarded, so we are done here. */
1307 if (lmsg->ms_flags & MSGF_UDP_SEND) {
1309 /* msg is replied by udp_send() */
1311 lwkt_replymsg(lmsg, lmsg->ms_error);
1316 udp_sosetport(struct lwkt_msg *msg, lwkt_port_t port)
1318 sosetport(((struct netmsg_base *)msg)->nm_so, port);
1322 udp_inswildcardhash(struct inpcb *inp, struct netmsg_base *msg, int error)
1324 lwkt_msg_t lmsg = &msg->lmsg;
1328 * Always clear the route cache, so we don't need to
1329 * worry about any owner CPU changes later.
1331 udp_reset_route(inp);
1333 KASSERT(inp->inp_lport != 0, ("local port not set yet"));
1334 cpu = ntohs(inp->inp_lport) & ncpus2_mask;
1336 lmsg->ms_error = error;
1337 if (cpu != mycpuid) {
1338 struct lwkt_port *port = netisr_cpuport(cpu);
1341 * We are moving the protocol processing port the socket
1342 * is on, we have to unlink here and re-link on the
1345 in_pcbunlink(inp, &udbinfo[mycpuid]);
1346 msg->nm_dispatch = udp_inswildcardhash_dispatch;
1348 /* See the related comment in tcp_usrreq.c tcp_connect() */
1349 lwkt_setmsg_receipt(lmsg, udp_sosetport);
1350 lwkt_forwardmsg(port, lmsg);
1351 return TRUE; /* forwarded */
1354 return udp_inswildcardhash_oncpu(inp);
1358 udp_bind(netmsg_t msg)
1360 struct socket *so = msg->bind.base.nm_so;
1366 struct sockaddr *nam = msg->bind.nm_nam;
1367 struct thread *td = msg->bind.nm_td;
1369 error = in_pcbbind(inp, nam, td);
1371 struct sockaddr_in *sin = (struct sockaddr_in *)nam;
1372 boolean_t forwarded;
1374 if (sin->sin_addr.s_addr != INADDR_ANY)
1375 inp->inp_flags |= INP_WASBOUND_NOTANY;
1377 forwarded = udp_inswildcardhash(inp,
1378 &msg->bind.base, 0);
1381 * The message is further forwarded, so
1390 lwkt_replymsg(&msg->bind.base.lmsg, error);
1394 udp_connect(netmsg_t msg)
1396 struct socket *so = msg->connect.base.nm_so;
1397 struct sockaddr *nam = msg->connect.nm_nam;
1398 struct thread *td = msg->connect.nm_td;
1400 struct sockaddr_in *sin = (struct sockaddr_in *)nam;
1401 struct sockaddr_in *if_sin;
1402 struct lwkt_port *port;
1405 KKASSERT(msg->connect.nm_m == NULL);
1413 if (msg->connect.nm_flags & PRUC_RECONNECT) {
1414 msg->connect.nm_flags &= ~PRUC_RECONNECT;
1415 in_pcblink(inp, &udbinfo[mycpuid]);
1418 if (inp->inp_faddr.s_addr != INADDR_ANY) {
1425 * Bind if we have to
1427 if (inp->inp_lport == 0 ||
1428 (td->td_proc && td->td_proc->p_ucred->cr_prison != NULL &&
1429 inp->inp_laddr.s_addr == INADDR_ANY)) {
1430 error = in_pcbbind(inp, NULL, td);
1436 * Calculate the correct protocol processing thread. The connect
1437 * operation must run there.
1439 error = in_pcbladdr(inp, nam, &if_sin, td);
1442 if (!prison_remote_ip(td, nam)) {
1443 error = EAFNOSUPPORT; /* IPv6 only jail */
1447 port = udp_addrport(sin->sin_addr.s_addr, sin->sin_port,
1448 inp->inp_laddr.s_addr != INADDR_ANY ?
1449 inp->inp_laddr.s_addr : if_sin->sin_addr.s_addr, inp->inp_lport);
1450 if (port != &curthread->td_msgport) {
1451 lwkt_msg_t lmsg = &msg->connect.base.lmsg;
1452 int nm_flags = PRUC_RECONNECT;
1455 * in_pcbladdr() may have allocated a route entry for us
1456 * on the current CPU, but we need a route entry on the
1457 * inpcb's owner CPU, so free it here.
1459 udp_reset_route(inp);
1461 if (inp->inp_flags & INP_WILDCARD) {
1463 * Remove this inpcb from the wildcard hash before
1464 * the socket's msgport changes.
1466 udp_remwildcardhash(inp);
1470 * We are moving the protocol processing port the socket
1471 * is on, we have to unlink here and re-link on the
1474 in_pcbunlink(inp, &udbinfo[mycpuid]);
1475 msg->connect.nm_flags |= nm_flags;
1477 /* See the related comment in tcp_usrreq.c tcp_connect() */
1478 lwkt_setmsg_receipt(lmsg, udp_sosetport);
1479 lwkt_forwardmsg(port, lmsg);
1480 /* msg invalid now */
1483 error = udp_connect_oncpu(inp, sin, if_sin);
1485 if (error && inp != NULL && inp->inp_lport != 0 &&
1486 (inp->inp_flags & INP_WILDCARD) == 0) {
1487 boolean_t forwarded;
1489 /* Connect failed; put it to wildcard hash. */
1490 forwarded = udp_inswildcardhash(inp, &msg->connect.base,
1494 * The message is further forwarded, so we are done
1500 lwkt_replymsg(&msg->connect.base.lmsg, error);
1504 udp_remwildcardhash(struct inpcb *inp)
1508 KASSERT(inp->inp_pcbinfo == &udbinfo[mycpuid],
1509 ("not on owner cpu"));
1511 for (cpu = 0; cpu < ncpus2; ++cpu) {
1512 if (cpu == mycpuid) {
1514 * This inpcb will be removed by the later
1515 * in_pcbremwildcardhash().
1519 in_pcbremwildcardhash_oncpu(inp, &udbinfo[cpu]);
1521 in_pcbremwildcardhash(inp);
1525 udp_connect_oncpu(struct inpcb *inp, struct sockaddr_in *sin,
1526 struct sockaddr_in *if_sin)
1528 struct socket *so = inp->inp_socket;
1531 oinp = in_pcblookup_hash(inp->inp_pcbinfo,
1532 sin->sin_addr, sin->sin_port,
1533 inp->inp_laddr.s_addr != INADDR_ANY ?
1534 inp->inp_laddr : if_sin->sin_addr, inp->inp_lport, FALSE, NULL);
1539 * No more errors can occur, finish adjusting the socket
1540 * and change the processing port to reflect the connected
1541 * socket. Once set we can no longer safely mess with the
1545 if (inp->inp_flags & INP_WILDCARD)
1546 udp_remwildcardhash(inp);
1548 if (inp->inp_laddr.s_addr == INADDR_ANY)
1549 inp->inp_laddr = if_sin->sin_addr;
1550 inp->inp_faddr = sin->sin_addr;
1551 inp->inp_fport = sin->sin_port;
1552 in_pcbinsconnhash(inp);
1560 udp_detach2(struct socket *so)
1562 in_pcbdetach(so->so_pcb);
1568 udp_detach_final_dispatch(netmsg_t msg)
1570 udp_detach2(msg->base.nm_so);
1574 udp_detach_oncpu_dispatch(netmsg_t msg)
1576 struct netmsg_base *clomsg = &msg->base;
1577 struct socket *so = clomsg->nm_so;
1578 struct inpcb *inp = so->so_pcb;
1579 struct thread *td = curthread;
1580 int nextcpu, cpuid = mycpuid;
1582 KASSERT(td->td_type == TD_TYPE_NETISR, ("not in netisr"));
1584 if (inp->inp_flags & INP_WILDCARD) {
1586 * This inp will be removed on the inp's
1587 * owner CPU later, so don't do it now.
1589 if (&td->td_msgport != so->so_port)
1590 in_pcbremwildcardhash_oncpu(inp, &udbinfo[cpuid]);
1595 * Free and clear multicast socket option,
1596 * which is only accessed in netisr0.
1598 ip_freemoptions(inp->inp_moptions);
1599 inp->inp_moptions = NULL;
1602 nextcpu = cpuid + 1;
1603 if (nextcpu < ncpus2) {
1604 lwkt_forwardmsg(netisr_cpuport(nextcpu), &clomsg->lmsg);
1607 * No one could see this inpcb now; destroy this
1608 * inpcb in its owner netisr.
1610 netmsg_init(clomsg, so, &netisr_apanic_rport, 0,
1611 udp_detach_final_dispatch);
1612 lwkt_sendmsg(so->so_port, &clomsg->lmsg);
1617 udp_detach(netmsg_t msg)
1619 struct socket *so = msg->detach.base.nm_so;
1620 struct netmsg_base *clomsg;
1625 lwkt_replymsg(&msg->detach.base.lmsg, EINVAL);
1630 * Reply EJUSTRETURN ASAP, we will call sodiscard() and
1633 lwkt_replymsg(&msg->detach.base.lmsg, EJUSTRETURN);
1636 /* Only one CPU, detach the inpcb directly. */
1642 * Remove this inpcb from the inpcb list first, so that
1643 * no one could find this inpcb from the inpcb list.
1648 * Go through netisrs which process UDP to make sure
1649 * no one could find this inpcb anymore.
1651 clomsg = &so->so_clomsg;
1652 netmsg_init(clomsg, so, &netisr_apanic_rport, MSGF_IGNSOPORT,
1653 udp_detach_oncpu_dispatch);
1654 lwkt_sendmsg(netisr_cpuport(0), &clomsg->lmsg);
1658 udp_disconnect(netmsg_t msg)
1660 struct socket *so = msg->disconnect.base.nm_so;
1662 boolean_t forwarded;
1670 if (inp->inp_faddr.s_addr == INADDR_ANY) {
1675 soclrstate(so, SS_ISCONNECTED); /* XXX */
1677 in_pcbdisconnect(inp);
1680 * Follow traditional BSD behavior and retain the local port
1681 * binding. But, fix the old misbehavior of overwriting any
1682 * previously bound local address.
1684 if (!(inp->inp_flags & INP_WASBOUND_NOTANY))
1685 inp->inp_laddr.s_addr = INADDR_ANY;
1687 if (so->so_state & SS_ISCLOSING) {
1689 * If this socket is being closed, there is no need
1690 * to put this socket back into wildcard hash table.
1696 forwarded = udp_inswildcardhash(inp, &msg->disconnect.base, 0);
1699 * The message is further forwarded, so we are done
1705 lwkt_replymsg(&msg->disconnect.base.lmsg, error);
1709 udp_shutdown(netmsg_t msg)
1711 struct socket *so = msg->shutdown.base.nm_so;
1722 lwkt_replymsg(&msg->shutdown.base.lmsg, error);
1725 struct pr_usrreqs udp_usrreqs = {
1726 .pru_abort = udp_abort,
1727 .pru_accept = pr_generic_notsupp,
1728 .pru_attach = udp_attach,
1729 .pru_bind = udp_bind,
1730 .pru_connect = udp_connect,
1731 .pru_connect2 = pr_generic_notsupp,
1732 .pru_control = in_control_dispatch,
1733 .pru_detach = udp_detach,
1734 .pru_disconnect = udp_disconnect,
1735 .pru_listen = pr_generic_notsupp,
1736 .pru_peeraddr = in_setpeeraddr_dispatch,
1737 .pru_rcvd = pr_generic_notsupp,
1738 .pru_rcvoob = pr_generic_notsupp,
1739 .pru_send = udp_send,
1740 .pru_sense = pru_sense_null,
1741 .pru_shutdown = udp_shutdown,
1742 .pru_sockaddr = in_setsockaddr_dispatch,
1743 .pru_sosend = sosendudp,
1744 .pru_soreceive = soreceive