2 * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95
34 * $FreeBSD: src/sys/netinet/udp_usrreq.c,v 1.64.2.18 2003/01/24 05:11:34 sam Exp $
35 * $DragonFly: src/sys/netinet/udp_usrreq.c,v 1.6 2003/08/23 11:18:00 rob Exp $
38 #include "opt_ipsec.h"
39 #include "opt_inet6.h"
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/malloc.h>
46 #include <sys/domain.h>
48 #include <sys/protosw.h>
49 #include <sys/socket.h>
50 #include <sys/socketvar.h>
51 #include <sys/sysctl.h>
52 #include <sys/syslog.h>
54 #include <vm/vm_zone.h>
57 #include <net/route.h>
59 #include <netinet/in.h>
60 #include <netinet/in_systm.h>
61 #include <netinet/ip.h>
63 #include <netinet/ip6.h>
65 #include <netinet/in_pcb.h>
66 #include <netinet/in_var.h>
67 #include <netinet/ip_var.h>
69 #include <netinet6/ip6_var.h>
71 #include <netinet/ip_icmp.h>
72 #include <netinet/icmp_var.h>
73 #include <netinet/udp.h>
74 #include <netinet/udp_var.h>
77 #include <netipsec/ipsec.h>
81 #include <netinet6/ipsec.h>
84 #include <machine/in_cksum.h>
87 * UDP protocol implementation.
88 * Per RFC 768, August, 1980.
91 static int udpcksum = 1;
93 static int udpcksum = 0; /* XXX */
95 SYSCTL_INT(_net_inet_udp, UDPCTL_CHECKSUM, checksum, CTLFLAG_RW,
99 SYSCTL_INT(_net_inet_udp, OID_AUTO, log_in_vain, CTLFLAG_RW,
100 &log_in_vain, 0, "Log all incoming UDP packets");
102 static int blackhole = 0;
103 SYSCTL_INT(_net_inet_udp, OID_AUTO, blackhole, CTLFLAG_RW,
104 &blackhole, 0, "Do not send port unreachables for refused connects");
106 struct inpcbhead udb; /* from udp_var.h */
107 #define udb6 udb /* for KAME src sync over BSD*'s */
108 struct inpcbinfo udbinfo;
111 #define UDBHASHSIZE 16
114 struct udpstat udpstat; /* from udp_var.h */
115 SYSCTL_STRUCT(_net_inet_udp, UDPCTL_STATS, stats, CTLFLAG_RW,
116 &udpstat, udpstat, "UDP statistics (struct udpstat, netinet/udp_var.h)");
118 static struct sockaddr_in udp_in = { sizeof(udp_in), AF_INET };
121 struct sockaddr_in6 uin6_sin;
122 u_char uin6_init_done : 1;
124 { sizeof(udp_in6.uin6_sin), AF_INET6 },
128 struct ip6_hdr uip6_ip6;
129 u_char uip6_init_done : 1;
133 static void udp_append (struct inpcb *last, struct ip *ip,
134 struct mbuf *n, int off);
136 static void ip_2_ip6_hdr (struct ip6_hdr *ip6, struct ip *ip);
139 static int udp_detach (struct socket *so);
140 static int udp_output (struct inpcb *, struct mbuf *, struct sockaddr *,
141 struct mbuf *, struct thread *);
147 udbinfo.listhead = &udb;
148 udbinfo.hashbase = hashinit(UDBHASHSIZE, M_PCB, &udbinfo.hashmask);
149 udbinfo.porthashbase = hashinit(UDBHASHSIZE, M_PCB,
150 &udbinfo.porthashmask);
151 udbinfo.ipi_zone = zinit("udpcb", sizeof(struct inpcb), maxsockets,
156 udp_input(m, off, proto)
164 struct mbuf *opts = 0;
167 struct sockaddr *append_sa;
169 udpstat.udps_ipackets++;
172 * Strip IP options, if any; should skip this,
173 * make available to user, and use on returned packets,
174 * but we don't yet have a way to check the checksum
175 * with options still present.
177 if (iphlen > sizeof (struct ip)) {
178 ip_stripoptions(m, (struct mbuf *)0);
179 iphlen = sizeof(struct ip);
183 * Get IP and UDP header together in first mbuf.
185 ip = mtod(m, struct ip *);
186 if (m->m_len < iphlen + sizeof(struct udphdr)) {
187 if ((m = m_pullup(m, iphlen + sizeof(struct udphdr))) == 0) {
188 udpstat.udps_hdrops++;
191 ip = mtod(m, struct ip *);
193 uh = (struct udphdr *)((caddr_t)ip + iphlen);
195 /* destination port of 0 is illegal, based on RFC768. */
196 if (uh->uh_dport == 0)
200 * Make mbuf data length reflect UDP length.
201 * If not enough data to reflect UDP length, drop.
203 len = ntohs((u_short)uh->uh_ulen);
204 if (ip->ip_len != len) {
205 if (len > ip->ip_len || len < sizeof(struct udphdr)) {
206 udpstat.udps_badlen++;
209 m_adj(m, len - ip->ip_len);
210 /* ip->ip_len = len; */
213 * Save a copy of the IP header in case we want restore it
214 * for sending an ICMP error message in response.
219 * Checksum extended UDP header and data.
222 if (m->m_pkthdr.csum_flags & CSUM_DATA_VALID) {
223 if (m->m_pkthdr.csum_flags & CSUM_PSEUDO_HDR)
224 uh->uh_sum = m->m_pkthdr.csum_data;
226 uh->uh_sum = in_pseudo(ip->ip_src.s_addr,
227 ip->ip_dst.s_addr, htonl((u_short)len +
228 m->m_pkthdr.csum_data + IPPROTO_UDP));
229 uh->uh_sum ^= 0xffff;
232 bcopy(((struct ipovly *)ip)->ih_x1, b, 9);
233 bzero(((struct ipovly *)ip)->ih_x1, 9);
234 ((struct ipovly *)ip)->ih_len = uh->uh_ulen;
235 uh->uh_sum = in_cksum(m, len + sizeof (struct ip));
236 bcopy(b, ((struct ipovly *)ip)->ih_x1, 9);
239 udpstat.udps_badsum++;
244 udpstat.udps_nosum++;
246 if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) ||
247 in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) {
250 * Deliver a multicast or broadcast datagram to *all* sockets
251 * for which the local and remote addresses and ports match
252 * those of the incoming datagram. This allows more than
253 * one process to receive multi/broadcasts on the same port.
254 * (This really ought to be done for unicast datagrams as
255 * well, but that would cause problems with existing
256 * applications that open both address-specific sockets and
257 * a wildcard socket listening to the same port -- they would
258 * end up receiving duplicates of every unicast datagram.
259 * Those applications open the multiple sockets to overcome an
260 * inadequacy of the UDP socket interface, but for backwards
261 * compatibility we avoid the problem here rather than
262 * fixing the interface. Maybe 4.5BSD will remedy this?)
266 * Construct sockaddr format source address.
268 udp_in.sin_port = uh->uh_sport;
269 udp_in.sin_addr = ip->ip_src;
271 * Locate pcb(s) for datagram.
272 * (Algorithm copied from raw_intr().)
276 udp_in6.uin6_init_done = udp_ip6.uip6_init_done = 0;
278 LIST_FOREACH(inp, &udb, inp_list) {
280 if ((inp->inp_vflag & INP_IPV4) == 0)
283 if (inp->inp_lport != uh->uh_dport)
285 if (inp->inp_laddr.s_addr != INADDR_ANY) {
286 if (inp->inp_laddr.s_addr !=
290 if (inp->inp_faddr.s_addr != INADDR_ANY) {
291 if (inp->inp_faddr.s_addr !=
293 inp->inp_fport != uh->uh_sport)
301 /* check AH/ESP integrity. */
302 if (ipsec4_in_reject_so(m, last->inp_socket))
303 ipsecstat.in_polvio++;
304 /* do not inject data to pcb */
308 /* check AH/ESP integrity. */
309 if (ipsec4_in_reject(m, last))
312 #endif /*FAST_IPSEC*/
313 if ((n = m_copy(m, 0, M_COPYALL)) != NULL)
314 udp_append(last, ip, n,
316 sizeof(struct udphdr));
320 * Don't look for additional matches if this one does
321 * not have either the SO_REUSEPORT or SO_REUSEADDR
322 * socket options set. This heuristic avoids searching
323 * through all pcbs in the common case of a non-shared
324 * port. It * assumes that an application will never
325 * clear these options after setting them.
327 if ((last->inp_socket->so_options&(SO_REUSEPORT|SO_REUSEADDR)) == 0)
333 * No matching pcb found; discard datagram.
334 * (No need to send an ICMP Port Unreachable
335 * for a broadcast or multicast datgram.)
337 udpstat.udps_noportbcast++;
341 /* check AH/ESP integrity. */
342 if (ipsec4_in_reject_so(m, last->inp_socket)) {
343 ipsecstat.in_polvio++;
348 /* check AH/ESP integrity. */
349 if (ipsec4_in_reject(m, last))
351 #endif /*FAST_IPSEC*/
352 udp_append(last, ip, m, iphlen + sizeof(struct udphdr));
356 * Locate pcb for datagram.
358 inp = in_pcblookup_hash(&udbinfo, ip->ip_src, uh->uh_sport,
359 ip->ip_dst, uh->uh_dport, 1, m->m_pkthdr.rcvif);
362 char buf[4*sizeof "123"];
364 strcpy(buf, inet_ntoa(ip->ip_dst));
366 "Connection attempt to UDP %s:%d from %s:%d\n",
367 buf, ntohs(uh->uh_dport), inet_ntoa(ip->ip_src),
368 ntohs(uh->uh_sport));
370 udpstat.udps_noport++;
371 if (m->m_flags & (M_BCAST | M_MCAST)) {
372 udpstat.udps_noportbcast++;
378 if (badport_bandlim(BANDLIM_ICMP_UNREACH) < 0)
382 ip->ip_len += iphlen;
383 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
387 if (ipsec4_in_reject_so(m, inp->inp_socket)) {
388 ipsecstat.in_polvio++;
393 if (ipsec4_in_reject(m, inp))
395 #endif /*FAST_IPSEC*/
398 * Construct sockaddr format source address.
399 * Stuff source address and datagram in user buffer.
401 udp_in.sin_port = uh->uh_sport;
402 udp_in.sin_addr = ip->ip_src;
403 if (inp->inp_flags & INP_CONTROLOPTS
404 || inp->inp_socket->so_options & SO_TIMESTAMP) {
406 if (inp->inp_vflag & INP_IPV6) {
409 ip_2_ip6_hdr(&udp_ip6.uip6_ip6, ip);
410 savedflags = inp->inp_flags;
411 inp->inp_flags &= ~INP_UNMAPPABLEOPTS;
412 ip6_savecontrol(inp, &opts, &udp_ip6.uip6_ip6, m);
413 inp->inp_flags = savedflags;
416 ip_savecontrol(inp, &opts, ip, m);
418 m_adj(m, iphlen + sizeof(struct udphdr));
420 if (inp->inp_vflag & INP_IPV6) {
421 in6_sin_2_v4mapsin6(&udp_in, &udp_in6.uin6_sin);
422 append_sa = (struct sockaddr *)&udp_in6;
425 append_sa = (struct sockaddr *)&udp_in;
426 if (sbappendaddr(&inp->inp_socket->so_rcv, append_sa, m, opts) == 0) {
427 udpstat.udps_fullsock++;
430 sorwakeup(inp->inp_socket);
441 ip_2_ip6_hdr(ip6, ip)
445 bzero(ip6, sizeof(*ip6));
447 ip6->ip6_vfc = IPV6_VERSION;
448 ip6->ip6_plen = ip->ip_len;
449 ip6->ip6_nxt = ip->ip_p;
450 ip6->ip6_hlim = ip->ip_ttl;
451 ip6->ip6_src.s6_addr32[2] = ip6->ip6_dst.s6_addr32[2] =
453 ip6->ip6_src.s6_addr32[3] = ip->ip_src.s_addr;
454 ip6->ip6_dst.s6_addr32[3] = ip->ip_dst.s_addr;
459 * subroutine of udp_input(), mainly for source code readability.
460 * caller must properly init udp_ip6 and udp_in6 beforehand.
463 udp_append(last, ip, n, off)
469 struct sockaddr *append_sa;
470 struct mbuf *opts = 0;
472 if (last->inp_flags & INP_CONTROLOPTS ||
473 last->inp_socket->so_options & SO_TIMESTAMP) {
475 if (last->inp_vflag & INP_IPV6) {
478 if (udp_ip6.uip6_init_done == 0) {
479 ip_2_ip6_hdr(&udp_ip6.uip6_ip6, ip);
480 udp_ip6.uip6_init_done = 1;
482 savedflags = last->inp_flags;
483 last->inp_flags &= ~INP_UNMAPPABLEOPTS;
484 ip6_savecontrol(last, &opts, &udp_ip6.uip6_ip6, n);
485 last->inp_flags = savedflags;
488 ip_savecontrol(last, &opts, ip, n);
491 if (last->inp_vflag & INP_IPV6) {
492 if (udp_in6.uin6_init_done == 0) {
493 in6_sin_2_v4mapsin6(&udp_in, &udp_in6.uin6_sin);
494 udp_in6.uin6_init_done = 1;
496 append_sa = (struct sockaddr *)&udp_in6.uin6_sin;
499 append_sa = (struct sockaddr *)&udp_in;
501 if (sbappendaddr(&last->inp_socket->so_rcv, append_sa, n, opts) == 0) {
505 udpstat.udps_fullsock++;
507 sorwakeup(last->inp_socket);
511 * Notify a udp user of an asynchronous error;
512 * just wake up so that he can collect error status.
515 udp_notify(inp, errno)
519 inp->inp_socket->so_error = errno;
520 sorwakeup(inp->inp_socket);
521 sowwakeup(inp->inp_socket);
525 udp_ctlinput(cmd, sa, vip)
532 void (*notify) (struct inpcb *, int) = udp_notify;
533 struct in_addr faddr;
537 faddr = ((struct sockaddr_in *)sa)->sin_addr;
538 if (sa->sa_family != AF_INET || faddr.s_addr == INADDR_ANY)
541 if (PRC_IS_REDIRECT(cmd)) {
543 notify = in_rtchange;
544 } else if (cmd == PRC_HOSTDEAD)
546 else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0)
550 uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
551 inp = in_pcblookup_hash(&udbinfo, faddr, uh->uh_dport,
552 ip->ip_src, uh->uh_sport, 0, NULL);
553 if (inp != NULL && inp->inp_socket != NULL)
554 (*notify)(inp, inetctlerrmap[cmd]);
557 in_pcbnotifyall(&udb, faddr, inetctlerrmap[cmd], notify);
561 udp_pcblist(SYSCTL_HANDLER_ARGS)
564 struct inpcb *inp, **inp_list;
569 * The process of preparing the TCB list is too time-consuming and
570 * resource-intensive to repeat twice on every request.
572 if (req->oldptr == 0) {
573 n = udbinfo.ipi_count;
574 req->oldidx = 2 * (sizeof xig)
575 + (n + n/8) * sizeof(struct xinpcb);
579 if (req->newptr != 0)
583 * OK, now we're committed to doing something.
586 gencnt = udbinfo.ipi_gencnt;
587 n = udbinfo.ipi_count;
590 xig.xig_len = sizeof xig;
592 xig.xig_gen = gencnt;
593 xig.xig_sogen = so_gencnt;
594 error = SYSCTL_OUT(req, &xig, sizeof xig);
598 inp_list = malloc(n * sizeof *inp_list, M_TEMP, M_WAITOK);
603 for (inp = LIST_FIRST(udbinfo.listhead), i = 0; inp && i < n;
604 inp = LIST_NEXT(inp, inp_list)) {
605 if (inp->inp_gencnt <= gencnt && !prison_xinpcb(req->td, inp))
612 for (i = 0; i < n; i++) {
614 if (inp->inp_gencnt <= gencnt) {
616 xi.xi_len = sizeof xi;
617 /* XXX should avoid extra copy */
618 bcopy(inp, &xi.xi_inp, sizeof *inp);
620 sotoxsocket(inp->inp_socket, &xi.xi_socket);
621 error = SYSCTL_OUT(req, &xi, sizeof xi);
626 * Give the user an updated idea of our state.
627 * If the generation differs from what we told
628 * her before, she knows that something happened
629 * while we were processing this request, and it
630 * might be necessary to retry.
633 xig.xig_gen = udbinfo.ipi_gencnt;
634 xig.xig_sogen = so_gencnt;
635 xig.xig_count = udbinfo.ipi_count;
637 error = SYSCTL_OUT(req, &xig, sizeof xig);
639 free(inp_list, M_TEMP);
643 SYSCTL_PROC(_net_inet_udp, UDPCTL_PCBLIST, pcblist, CTLFLAG_RD, 0, 0,
644 udp_pcblist, "S,xinpcb", "List of active UDP sockets");
647 udp_getcred(SYSCTL_HANDLER_ARGS)
649 struct sockaddr_in addrs[2];
653 error = suser(req->td);
656 error = SYSCTL_IN(req, addrs, sizeof(addrs));
660 inp = in_pcblookup_hash(&udbinfo, addrs[1].sin_addr, addrs[1].sin_port,
661 addrs[0].sin_addr, addrs[0].sin_port, 1, NULL);
662 if (inp == NULL || inp->inp_socket == NULL) {
666 error = SYSCTL_OUT(req, inp->inp_socket->so_cred, sizeof(struct ucred));
672 SYSCTL_PROC(_net_inet_udp, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW,
673 0, 0, udp_getcred, "S,ucred", "Get the ucred of a UDP connection");
676 udp_output(inp, m, addr, control, td)
679 struct sockaddr *addr;
680 struct mbuf *control;
684 int len = m->m_pkthdr.len;
685 struct in_addr laddr;
686 struct sockaddr_in *sin;
687 int s = 0, error = 0;
690 m_freem(control); /* XXX */
692 if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) {
698 sin = (struct sockaddr_in *)addr;
699 prison_remote_ip(td, 0, &sin->sin_addr.s_addr);
700 laddr = inp->inp_laddr;
701 if (inp->inp_faddr.s_addr != INADDR_ANY) {
706 * Must block input while temporarily connected.
709 error = in_pcbconnect(inp, addr, td);
715 if (inp->inp_faddr.s_addr == INADDR_ANY) {
721 * Calculate data length and get a mbuf
722 * for UDP and IP headers.
724 M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
733 * Fill in mbuf with extended UDP header
734 * and addresses and length put into network format.
736 ui = mtod(m, struct udpiphdr *);
737 bzero(ui->ui_x1, sizeof(ui->ui_x1)); /* XXX still needed? */
738 ui->ui_pr = IPPROTO_UDP;
739 ui->ui_src = inp->inp_laddr;
740 ui->ui_dst = inp->inp_faddr;
741 ui->ui_sport = inp->inp_lport;
742 ui->ui_dport = inp->inp_fport;
743 ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr));
746 * Set up checksum and output datagram.
749 ui->ui_sum = in_pseudo(ui->ui_src.s_addr, ui->ui_dst.s_addr,
750 htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));
751 m->m_pkthdr.csum_flags = CSUM_UDP;
752 m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
756 ((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len;
757 ((struct ip *)ui)->ip_ttl = inp->inp_ip_ttl; /* XXX */
758 ((struct ip *)ui)->ip_tos = inp->inp_ip_tos; /* XXX */
759 udpstat.udps_opackets++;
761 error = ip_output(m, inp->inp_options, &inp->inp_route,
762 (inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST)),
763 inp->inp_moptions, inp);
766 in_pcbdisconnect(inp);
767 inp->inp_laddr = laddr; /* XXX rehash? */
777 u_long udp_sendspace = 9216; /* really max datagram size */
778 /* 40 1K datagrams */
779 SYSCTL_INT(_net_inet_udp, UDPCTL_MAXDGRAM, maxdgram, CTLFLAG_RW,
780 &udp_sendspace, 0, "Maximum outgoing UDP datagram size");
782 u_long udp_recvspace = 40 * (1024 +
784 sizeof(struct sockaddr_in6)
786 sizeof(struct sockaddr_in)
789 SYSCTL_INT(_net_inet_udp, UDPCTL_RECVSPACE, recvspace, CTLFLAG_RW,
790 &udp_recvspace, 0, "Maximum incoming UDP datagram size");
793 udp_abort(struct socket *so)
800 return EINVAL; /* ??? possible? panic instead? */
801 soisdisconnected(so);
809 udp_attach(struct socket *so, int proto, struct thread *td)
818 error = soreserve(so, udp_sendspace, udp_recvspace);
822 error = in_pcballoc(so, &udbinfo, td);
827 inp = (struct inpcb *)so->so_pcb;
828 inp->inp_vflag |= INP_IPV4;
829 inp->inp_ip_ttl = ip_defttl;
834 udp_bind(struct socket *so, struct sockaddr *nam, struct thread *td)
843 error = in_pcbbind(inp, nam, td);
849 udp_connect(struct socket *so, struct sockaddr *nam, struct thread *td)
853 struct sockaddr_in *sin;
858 if (inp->inp_faddr.s_addr != INADDR_ANY)
862 if (inp->inp_laddr.s_addr == INADDR_ANY &&
864 td->td_proc->p_ucred->cr_prison != NULL) {
865 error = in_pcbbind(inp, NULL, td);
868 sin = (struct sockaddr_in *)nam;
869 prison_remote_ip(td, 0, &sin->sin_addr.s_addr);
870 error = in_pcbconnect(inp, nam, td);
879 udp_detach(struct socket *so)
894 udp_disconnect(struct socket *so)
902 if (inp->inp_faddr.s_addr == INADDR_ANY)
906 in_pcbdisconnect(inp);
907 inp->inp_laddr.s_addr = INADDR_ANY;
909 so->so_state &= ~SS_ISCONNECTED; /* XXX */
914 udp_send(struct socket *so, int flags, struct mbuf *m, struct sockaddr *addr,
915 struct mbuf *control, struct thread *td)
924 return udp_output(inp, m, addr, control, td);
928 udp_shutdown(struct socket *so)
939 struct pr_usrreqs udp_usrreqs = {
940 udp_abort, pru_accept_notsupp, udp_attach, udp_bind, udp_connect,
941 pru_connect2_notsupp, in_control, udp_detach, udp_disconnect,
942 pru_listen_notsupp, in_setpeeraddr, pru_rcvd_notsupp,
943 pru_rcvoob_notsupp, udp_send, pru_sense_null, udp_shutdown,
944 in_setsockaddr, sosend, soreceive, sopoll