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
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35 * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
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38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
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52 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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59 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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);
217 struct inpcbportinfo *portinfo;
220 portinfo = kmalloc_cachealign(sizeof(*portinfo) * ncpus2, M_PCB,
223 for (cpu = 0; cpu < ncpus2; cpu++) {
224 struct inpcbinfo *uicb = &udbinfo[cpu];
228 * UDP pcb list, wildcard hash table and localgroup hash
231 in_pcbinfo_init(uicb, cpu, TRUE);
232 uicb->hashbase = hashinit(UDBHASHSIZE, M_PCB, &uicb->hashmask);
234 in_pcbportinfo_init(&portinfo[cpu], UDBHASHSIZE, TRUE, cpu);
235 uicb->portinfo = portinfo;
236 uicb->portinfo_mask = ncpus2_mask;
238 uicb->wildcardhashbase = hashinit(UDBHASHSIZE, M_PCB,
239 &uicb->wildcardhashmask);
240 uicb->localgrphashbase = hashinit(UDBHASHSIZE, M_PCB,
241 &uicb->localgrphashmask);
243 uicb->ipi_size = sizeof(struct inpcb);
247 * Initialize UDP statistics counters for each CPU.
249 for (cpu = 0; cpu < ncpus; ++cpu)
250 bzero(&udpstat_percpu[cpu], sizeof(struct udpstat));
254 sysctl_udpstat(SYSCTL_HANDLER_ARGS)
258 for (cpu = 0; cpu < ncpus; ++cpu) {
259 if ((error = SYSCTL_OUT(req, &udpstat_percpu[cpu],
260 sizeof(struct udpstat))))
262 if ((error = SYSCTL_IN(req, &udpstat_percpu[cpu],
263 sizeof(struct udpstat))))
269 SYSCTL_PROC(_net_inet_udp, UDPCTL_STATS, stats, (CTLTYPE_OPAQUE | CTLFLAG_RW),
270 0, 0, sysctl_udpstat, "S,udpstat", "UDP statistics");
273 * Check multicast packets to make sure they are only sent to sockets with
274 * multicast memberships for the packet's destination address and arrival
275 * interface. Multicast packets to multicast-unaware sockets are also
278 * Returns 0 if the packet is acceptable, -1 if it is not.
281 check_multicast_membership(const struct ip *ip, const struct inpcb *inp,
282 const struct mbuf *m)
284 const struct ip_moptions *mopt;
287 if (strict_mcast_mship == 0 ||
288 !IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) {
292 KASSERT(&curthread->td_msgport == netisr_cpuport(0),
293 ("multicast input not in netisr0"));
295 mopt = inp->inp_moptions;
298 for (mshipno = 0; mshipno < mopt->imo_num_memberships; ++mshipno) {
299 const struct in_multi *maddr = mopt->imo_membership[mshipno];
301 if (ip->ip_dst.s_addr == maddr->inm_addr.s_addr &&
302 m->m_pkthdr.rcvif == maddr->inm_ifp) {
309 struct udp_mcast_arg {
315 struct sockaddr_in *udp_in;
317 struct udp_in6 *udp_in6;
318 struct udp_ip6 *udp_ip6;
323 udp_mcast_input(struct udp_mcast_arg *arg)
325 struct inpcb *inp = arg->inp;
326 struct inpcb *last = arg->last;
327 struct ip *ip = arg->ip;
328 struct mbuf *m = arg->m;
330 if (check_multicast_membership(ip, inp, m) < 0)
331 return ERESTART; /* caller continue */
337 /* check AH/ESP integrity. */
338 if (ipsec4_in_reject_so(m, last->inp_socket))
339 ipsecstat.in_polvio++;
340 /* do not inject data to pcb */
344 /* check AH/ESP integrity. */
345 if (ipsec4_in_reject(m, last))
348 #endif /*FAST_IPSEC*/
349 if ((n = m_copypacket(m, MB_DONTWAIT)) != NULL)
350 udp_append(last, ip, n,
351 arg->iphlen + sizeof(struct udphdr),
354 arg->udp_in6, arg->udp_ip6
360 arg->last = last = inp;
363 * Don't look for additional matches if this one does
364 * not have either the SO_REUSEPORT or SO_REUSEADDR
365 * socket options set. This heuristic avoids searching
366 * through all pcbs in the common case of a non-shared
367 * port. It * assumes that an application will never
368 * clear these options after setting them.
370 if (!(last->inp_socket->so_options &
371 (SO_REUSEPORT | SO_REUSEADDR)))
372 return EJUSTRETURN; /* caller stop */
377 udp_input(struct mbuf **mp, int *offp, int proto)
379 struct sockaddr_in udp_in = { sizeof udp_in, AF_INET };
381 struct udp_in6 udp_in6 = {
382 { sizeof udp_in6.uin6_sin, AF_INET6 }, 0
384 struct udp_ip6 udp_ip6;
392 struct mbuf *opts = NULL;
395 struct sockaddr *append_sa;
396 struct inpcbinfo *pcbinfo = &udbinfo[mycpuid];
403 udp_stat.udps_ipackets++;
406 * Strip IP options, if any; should skip this,
407 * make available to user, and use on returned packets,
408 * but we don't yet have a way to check the checksum
409 * with options still present.
411 if (iphlen > sizeof(struct ip)) {
413 iphlen = sizeof(struct ip);
417 * IP and UDP headers are together in first mbuf.
418 * Already checked and pulled up in ip_demux().
420 KASSERT(m->m_len >= iphlen + sizeof(struct udphdr),
421 ("UDP header not in one mbuf"));
423 ip = mtod(m, struct ip *);
424 uh = (struct udphdr *)((caddr_t)ip + iphlen);
426 /* destination port of 0 is illegal, based on RFC768. */
427 if (uh->uh_dport == 0)
431 * Make mbuf data length reflect UDP length.
432 * If not enough data to reflect UDP length, drop.
434 len = ntohs((u_short)uh->uh_ulen);
435 if (ip->ip_len != len) {
436 if (len > ip->ip_len || len < sizeof(struct udphdr)) {
437 udp_stat.udps_badlen++;
440 m_adj(m, len - ip->ip_len);
441 /* ip->ip_len = len; */
444 * Save a copy of the IP header in case we want restore it
445 * for sending an ICMP error message in response.
450 * Checksum extended UDP header and data.
453 if (m->m_pkthdr.csum_flags & CSUM_DATA_VALID) {
454 if (m->m_pkthdr.csum_flags & CSUM_PSEUDO_HDR)
455 uh->uh_sum = m->m_pkthdr.csum_data;
457 uh->uh_sum = in_pseudo(ip->ip_src.s_addr,
458 ip->ip_dst.s_addr, htonl((u_short)len +
459 m->m_pkthdr.csum_data + IPPROTO_UDP));
460 uh->uh_sum ^= 0xffff;
464 bcopy(((struct ipovly *)ip)->ih_x1, b, 9);
465 bzero(((struct ipovly *)ip)->ih_x1, 9);
466 ((struct ipovly *)ip)->ih_len = uh->uh_ulen;
467 uh->uh_sum = in_cksum(m, len + sizeof(struct ip));
468 bcopy(b, ((struct ipovly *)ip)->ih_x1, 9);
471 udp_stat.udps_badsum++;
473 return(IPPROTO_DONE);
476 udp_stat.udps_nosum++;
478 if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) ||
479 in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) {
480 struct inpcbhead *connhead;
481 struct inpcontainer *ic, *ic_marker;
482 struct inpcontainerhead *ichead;
483 struct udp_mcast_arg arg;
488 * Deliver a multicast or broadcast datagram to *all* sockets
489 * for which the local and remote addresses and ports match
490 * those of the incoming datagram. This allows more than
491 * one process to receive multi/broadcasts on the same port.
492 * (This really ought to be done for unicast datagrams as
493 * well, but that would cause problems with existing
494 * applications that open both address-specific sockets and
495 * a wildcard socket listening to the same port -- they would
496 * end up receiving duplicates of every unicast datagram.
497 * Those applications open the multiple sockets to overcome an
498 * inadequacy of the UDP socket interface, but for backwards
499 * compatibility we avoid the problem here rather than
500 * fixing the interface. Maybe 4.5BSD will remedy this?)
504 * Construct sockaddr format source address.
506 udp_in.sin_port = uh->uh_sport;
507 udp_in.sin_addr = ip->ip_src;
508 arg.udp_in = &udp_in;
510 * Locate pcb(s) for datagram.
511 * (Algorithm copied from raw_intr().)
515 udp_in6.uin6_init_done = udp_ip6.uip6_init_done = 0;
516 arg.udp_in6 = &udp_in6;
517 arg.udp_ip6 = &udp_ip6;
521 connhead = &pcbinfo->hashbase[
522 INP_PCBCONNHASH(ip->ip_src.s_addr, uh->uh_sport,
523 ip->ip_dst.s_addr, uh->uh_dport, pcbinfo->hashmask)];
524 LIST_FOREACH(inp, connhead, inp_hash) {
526 if (!(inp->inp_vflag & INP_IPV4))
529 if (!in_hosteq(inp->inp_faddr, ip->ip_src) ||
530 !in_hosteq(inp->inp_laddr, ip->ip_dst) ||
531 inp->inp_fport != uh->uh_sport ||
532 inp->inp_lport != uh->uh_dport)
540 error = udp_mcast_input(&arg);
541 if (error == ERESTART)
545 if (error == EJUSTRETURN)
549 ichead = &pcbinfo->wildcardhashbase[
550 INP_PCBWILDCARDHASH(uh->uh_dport,
551 pcbinfo->wildcardhashmask)];
552 ic_marker = in_pcbcontainer_marker(mycpuid);
554 GET_PCBINFO_TOKEN(pcbinfo);
555 LIST_INSERT_HEAD(ichead, ic_marker, ic_list);
556 while ((ic = LIST_NEXT(ic_marker, ic_list)) != NULL) {
557 LIST_REMOVE(ic_marker, ic_list);
558 LIST_INSERT_AFTER(ic, ic_marker, ic_list);
561 if (inp->inp_flags & INP_PLACEMARKER)
564 if (!(inp->inp_vflag & INP_IPV4))
567 if (inp->inp_lport != uh->uh_dport)
569 if (inp->inp_laddr.s_addr != INADDR_ANY &&
570 inp->inp_laddr.s_addr != ip->ip_dst.s_addr)
578 error = udp_mcast_input(&arg);
579 if (error == ERESTART)
583 if (error == EJUSTRETURN)
586 LIST_REMOVE(ic_marker, ic_list);
587 REL_PCBINFO_TOKEN(pcbinfo);
591 * No matching pcb found; discard datagram.
592 * (No need to send an ICMP Port Unreachable
593 * for a broadcast or multicast datgram.)
595 udp_stat.udps_noportbcast++;
599 /* check AH/ESP integrity. */
600 if (ipsec4_in_reject_so(m, last->inp_socket)) {
601 ipsecstat.in_polvio++;
606 /* check AH/ESP integrity. */
607 if (ipsec4_in_reject(m, last))
609 #endif /*FAST_IPSEC*/
610 udp_append(last, ip, m, iphlen + sizeof(struct udphdr),
618 return(IPPROTO_DONE);
621 * Locate pcb for datagram.
623 inp = in_pcblookup_pkthash(pcbinfo, ip->ip_src, uh->uh_sport,
624 ip->ip_dst, uh->uh_dport, TRUE, m->m_pkthdr.rcvif,
625 udp_reuseport_ext ? m : NULL);
628 char buf[sizeof "aaa.bbb.ccc.ddd"];
630 strcpy(buf, inet_ntoa(ip->ip_dst));
632 "Connection attempt to UDP %s:%d from %s:%d\n",
633 buf, ntohs(uh->uh_dport), inet_ntoa(ip->ip_src),
634 ntohs(uh->uh_sport));
636 udp_stat.udps_noport++;
637 if (m->m_flags & (M_BCAST | M_MCAST)) {
638 udp_stat.udps_noportbcast++;
644 if (badport_bandlim(BANDLIM_ICMP_UNREACH) < 0)
648 ip->ip_len += iphlen;
649 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
650 return(IPPROTO_DONE);
653 if (ipsec4_in_reject_so(m, inp->inp_socket)) {
654 ipsecstat.in_polvio++;
659 if (ipsec4_in_reject(m, inp))
661 #endif /*FAST_IPSEC*/
663 * Check the minimum TTL for socket.
665 if (ip->ip_ttl < inp->inp_ip_minttl)
669 * Construct sockaddr format source address.
670 * Stuff source address and datagram in user buffer.
672 udp_in.sin_port = uh->uh_sport;
673 udp_in.sin_addr = ip->ip_src;
674 if ((inp->inp_flags & INP_CONTROLOPTS) ||
675 (inp->inp_socket->so_options & SO_TIMESTAMP)) {
677 if (inp->inp_vflag & INP_IPV6) {
680 ip_2_ip6_hdr(&udp_ip6.uip6_ip6, ip);
681 savedflags = inp->inp_flags;
682 inp->inp_flags &= ~INP_UNMAPPABLEOPTS;
683 ip6_savecontrol(inp, &opts, &udp_ip6.uip6_ip6, m);
684 inp->inp_flags = savedflags;
687 ip_savecontrol(inp, &opts, ip, m);
689 m_adj(m, iphlen + sizeof(struct udphdr));
691 if (inp->inp_vflag & INP_IPV6) {
692 in6_sin_2_v4mapsin6(&udp_in, &udp_in6.uin6_sin);
693 append_sa = (struct sockaddr *)&udp_in6;
696 append_sa = (struct sockaddr *)&udp_in;
698 lwkt_gettoken(&inp->inp_socket->so_rcv.ssb_token);
699 if (ssb_appendaddr(&inp->inp_socket->so_rcv, append_sa, m, opts) == 0) {
700 lwkt_reltoken(&inp->inp_socket->so_rcv.ssb_token);
701 udp_stat.udps_fullsock++;
704 lwkt_reltoken(&inp->inp_socket->so_rcv.ssb_token);
705 sorwakeup(inp->inp_socket);
706 return(IPPROTO_DONE);
711 return(IPPROTO_DONE);
716 ip_2_ip6_hdr(struct ip6_hdr *ip6, struct ip *ip)
718 bzero(ip6, sizeof *ip6);
720 ip6->ip6_vfc = IPV6_VERSION;
721 ip6->ip6_plen = ip->ip_len;
722 ip6->ip6_nxt = ip->ip_p;
723 ip6->ip6_hlim = ip->ip_ttl;
724 ip6->ip6_src.s6_addr32[2] = ip6->ip6_dst.s6_addr32[2] =
726 ip6->ip6_src.s6_addr32[3] = ip->ip_src.s_addr;
727 ip6->ip6_dst.s6_addr32[3] = ip->ip_dst.s_addr;
732 * subroutine of udp_input(), mainly for source code readability.
733 * caller must properly init udp_ip6 and udp_in6 beforehand.
736 udp_append(struct inpcb *last, struct ip *ip, struct mbuf *n, int off,
737 struct sockaddr_in *udp_in,
738 struct udp_in6 *udp_in6, struct udp_ip6 *udp_ip6)
740 struct sockaddr *append_sa;
741 struct mbuf *opts = NULL;
744 if (last->inp_flags & INP_CONTROLOPTS ||
745 last->inp_socket->so_options & SO_TIMESTAMP) {
747 if (last->inp_vflag & INP_IPV6) {
750 if (udp_ip6->uip6_init_done == 0) {
751 ip_2_ip6_hdr(&udp_ip6->uip6_ip6, ip);
752 udp_ip6->uip6_init_done = 1;
754 savedflags = last->inp_flags;
755 last->inp_flags &= ~INP_UNMAPPABLEOPTS;
756 ip6_savecontrol(last, &opts, &udp_ip6->uip6_ip6, n);
757 last->inp_flags = savedflags;
760 ip_savecontrol(last, &opts, ip, n);
763 if (last->inp_vflag & INP_IPV6) {
764 if (udp_in6->uin6_init_done == 0) {
765 in6_sin_2_v4mapsin6(udp_in, &udp_in6->uin6_sin);
766 udp_in6->uin6_init_done = 1;
768 append_sa = (struct sockaddr *)&udp_in6->uin6_sin;
771 append_sa = (struct sockaddr *)udp_in;
774 lwkt_gettoken(&last->inp_socket->so_rcv.ssb_token);
775 ret = ssb_appendaddr(&last->inp_socket->so_rcv, append_sa, n, opts);
776 lwkt_reltoken(&last->inp_socket->so_rcv.ssb_token);
781 udp_stat.udps_fullsock++;
783 sorwakeup(last->inp_socket);
788 * Notify a udp user of an asynchronous error;
789 * just wake up so that he can collect error status.
792 udp_notify(struct inpcb *inp, int error)
794 inp->inp_socket->so_error = error;
795 sorwakeup(inp->inp_socket);
796 sowwakeup(inp->inp_socket);
799 struct netmsg_udp_notify {
800 struct netmsg_base base;
801 void (*nm_notify)(struct inpcb *, int);
802 struct in_addr nm_faddr;
807 udp_notifyall_oncpu(netmsg_t msg)
809 struct netmsg_udp_notify *nm = (struct netmsg_udp_notify *)msg;
810 int nextcpu, cpu = mycpuid;
812 in_pcbnotifyall(&udbinfo[cpu], nm->nm_faddr, nm->nm_arg, nm->nm_notify);
815 if (nextcpu < ncpus2)
816 lwkt_forwardmsg(netisr_cpuport(nextcpu), &nm->base.lmsg);
818 lwkt_replymsg(&nm->base.lmsg, 0);
822 udp_ctlinput(netmsg_t msg)
824 struct sockaddr *sa = msg->ctlinput.nm_arg;
825 struct ip *ip = msg->ctlinput.nm_extra;
826 int cmd = msg->ctlinput.nm_cmd;
828 void (*notify) (struct inpcb *, int) = udp_notify;
829 struct in_addr faddr;
832 faddr = ((struct sockaddr_in *)sa)->sin_addr;
833 if (sa->sa_family != AF_INET || faddr.s_addr == INADDR_ANY)
836 if (PRC_IS_REDIRECT(cmd)) {
838 notify = in_rtchange;
839 } else if (cmd == PRC_HOSTDEAD) {
841 } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) {
846 uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
847 inp = in_pcblookup_hash(&udbinfo[mycpuid], faddr, uh->uh_dport,
848 ip->ip_src, uh->uh_sport, 0, NULL);
849 if (inp != NULL && inp->inp_socket != NULL)
850 (*notify)(inp, inetctlerrmap[cmd]);
852 struct netmsg_udp_notify *nm;
854 KKASSERT(&curthread->td_msgport == netisr_cpuport(0));
855 nm = kmalloc(sizeof(*nm), M_LWKTMSG, M_INTWAIT);
856 netmsg_init(&nm->base, NULL, &netisr_afree_rport,
857 0, udp_notifyall_oncpu);
858 nm->nm_faddr = faddr;
859 nm->nm_arg = inetctlerrmap[cmd];
860 nm->nm_notify = notify;
861 lwkt_sendmsg(netisr_cpuport(0), &nm->base.lmsg);
864 lwkt_replymsg(&msg->lmsg, 0);
867 SYSCTL_PROC(_net_inet_udp, UDPCTL_PCBLIST, pcblist, CTLFLAG_RD, udbinfo, 0,
868 in_pcblist_global_ncpus2, "S,xinpcb", "List of active UDP sockets");
871 udp_getcred(SYSCTL_HANDLER_ARGS)
873 struct sockaddr_in addrs[2];
874 struct ucred cred0, *cred = NULL;
876 int error, cpu, origcpu;
878 error = priv_check(req->td, PRIV_ROOT);
881 error = SYSCTL_IN(req, addrs, sizeof addrs);
886 cpu = udp_addrcpu(addrs[1].sin_addr.s_addr, addrs[1].sin_port,
887 addrs[0].sin_addr.s_addr, addrs[0].sin_port);
889 lwkt_migratecpu(cpu);
891 inp = in_pcblookup_hash(&udbinfo[cpu],
892 addrs[1].sin_addr, addrs[1].sin_port,
893 addrs[0].sin_addr, addrs[0].sin_port, TRUE, NULL);
894 if (inp == NULL || inp->inp_socket == NULL) {
896 } else if (inp->inp_socket->so_cred != NULL) {
897 cred0 = *(inp->inp_socket->so_cred);
901 lwkt_migratecpu(origcpu);
906 return SYSCTL_OUT(req, cred, sizeof(struct ucred));
908 SYSCTL_PROC(_net_inet_udp, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW,
909 0, 0, udp_getcred, "S,ucred", "Get the ucred of a UDP connection");
912 udp_send_redispatch(netmsg_t msg)
914 struct mbuf *m = msg->send.nm_m;
915 int pru_flags = msg->send.nm_flags;
916 struct inpcb *inp = msg->send.base.nm_so->so_pcb;
917 struct mbuf *m_opt = msg->send.nm_control; /* XXX save ipopt */
918 int flags = msg->send.nm_priv; /* ip_output flags */
921 logudp(redisp_ipout_beg, inp);
924 * - Don't use inp route cache. It should only be used in the
926 * - Access to inp_moptions should be safe, since multicast UDP
927 * datagrams are redispatched to netisr0 and inp_moptions is
928 * changed only in netisr0.
930 error = ip_output(m, m_opt, NULL, flags, inp->inp_moptions, inp);
931 if ((pru_flags & PRUS_NOREPLY) == 0)
932 lwkt_replymsg(&msg->send.base.lmsg, error);
935 /* Free saved ip options, if any */
939 logudp(redisp_ipout_end, inp);
943 udp_send(netmsg_t msg)
945 struct socket *so = msg->send.base.nm_so;
946 struct mbuf *m = msg->send.nm_m;
947 struct sockaddr *dstaddr = msg->send.nm_addr;
948 int pru_flags = msg->send.nm_flags;
949 struct inpcb *inp = so->so_pcb;
950 struct thread *td = msg->send.nm_td;
954 int len = m->m_pkthdr.len;
955 struct sockaddr_in *sin; /* really is initialized before use */
958 KKASSERT(msg->send.nm_control == NULL);
960 logudp(send_beg, inp);
967 if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) {
972 if (inp->inp_lport == 0) { /* unbound socket */
975 error = in_pcbbind(inp, NULL, td);
980 * Need to call udp_send again, after this inpcb is
981 * inserted into wildcard hash table.
983 msg->send.base.lmsg.ms_flags |= MSGF_UDP_SEND;
984 forwarded = udp_inswildcardhash(inp, &msg->send.base, 0);
987 * The message is further forwarded, so we are
990 logudp(send_inswildcard, inp);
995 if (dstaddr != NULL) { /* destination address specified */
996 if (inp->inp_faddr.s_addr != INADDR_ANY) {
997 /* already connected */
1001 sin = (struct sockaddr_in *)dstaddr;
1002 if (!prison_remote_ip(td, (struct sockaddr *)&sin)) {
1003 error = EAFNOSUPPORT; /* IPv6 only jail */
1007 if (inp->inp_faddr.s_addr == INADDR_ANY) {
1008 /* no destination specified and not already connected */
1016 * Calculate data length and get a mbuf
1017 * for UDP and IP headers.
1019 M_PREPEND(m, sizeof(struct udpiphdr), MB_DONTWAIT);
1026 * Fill in mbuf with extended UDP header
1027 * and addresses and length put into network format.
1029 ui = mtod(m, struct udpiphdr *);
1030 bzero(ui->ui_x1, sizeof ui->ui_x1); /* XXX still needed? */
1031 ui->ui_pr = IPPROTO_UDP;
1034 * Set destination address.
1036 if (dstaddr != NULL) { /* use specified destination */
1037 ui->ui_dst = sin->sin_addr;
1038 ui->ui_dport = sin->sin_port;
1039 } else { /* use connected destination */
1040 ui->ui_dst = inp->inp_faddr;
1041 ui->ui_dport = inp->inp_fport;
1045 * Set source address.
1047 if (inp->inp_laddr.s_addr == INADDR_ANY ||
1048 IN_MULTICAST(ntohl(inp->inp_laddr.s_addr))) {
1049 struct sockaddr_in *if_sin;
1051 if (dstaddr == NULL) {
1053 * connect() had (or should have) failed because
1054 * the interface had no IP address, but the
1055 * application proceeded to call send() anyways.
1061 /* Look up outgoing interface. */
1062 error = in_pcbladdr_find(inp, dstaddr, &if_sin, td, 1);
1065 ui->ui_src = if_sin->sin_addr; /* use address of interface */
1067 ui->ui_src = inp->inp_laddr; /* use non-null bound address */
1069 ui->ui_sport = inp->inp_lport;
1070 KASSERT(inp->inp_lport != 0, ("inp lport should have been bound"));
1073 * Release the original thread, since it is no longer used
1075 if (pru_flags & PRUS_HELDTD) {
1077 pru_flags &= ~PRUS_HELDTD;
1080 * Free the dest address, since it is no longer needed
1082 if (pru_flags & PRUS_FREEADDR) {
1083 kfree(dstaddr, M_SONAME);
1084 pru_flags &= ~PRUS_FREEADDR;
1087 ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr));
1090 * Set up checksum and output datagram.
1093 ui->ui_sum = in_pseudo(ui->ui_src.s_addr, ui->ui_dst.s_addr,
1094 htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));
1095 m->m_pkthdr.csum_flags = CSUM_UDP;
1096 m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
1097 m->m_pkthdr.csum_thlen = sizeof(struct udphdr);
1101 ((struct ip *)ui)->ip_len = sizeof(struct udpiphdr) + len;
1102 ((struct ip *)ui)->ip_ttl = inp->inp_ip_ttl; /* XXX */
1103 ((struct ip *)ui)->ip_tos = inp->inp_ip_tos; /* XXX */
1104 udp_stat.udps_opackets++;
1106 flags = IP_DEBUGROUTE |
1107 (inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST));
1108 if (pru_flags & PRUS_DONTROUTE)
1109 flags |= SO_DONTROUTE;
1111 if (inp->inp_flags & INP_CONNECTED) {
1113 * For connected socket, this datagram has already
1114 * been in the correct netisr; no need to rehash.
1119 cpu = udp_addrcpu(ui->ui_dst.s_addr, ui->ui_dport,
1120 ui->ui_src.s_addr, ui->ui_sport);
1121 if (cpu != mycpuid) {
1122 struct mbuf *m_opt = NULL;
1123 struct netmsg_pru_send *smsg;
1124 struct lwkt_port *port = netisr_cpuport(cpu);
1127 * Not on the CPU that matches this UDP datagram hash;
1128 * redispatch to the correct CPU to do the ip_output().
1130 if (inp->inp_options != NULL) {
1132 * If there are ip options, then save a copy,
1133 * since accessing inp_options on other CPUs'
1136 * XXX optimize this?
1138 m_opt = m_copym(inp->inp_options, 0, M_COPYALL,
1141 if ((pru_flags & PRUS_NOREPLY) == 0) {
1143 * Change some parts of the original netmsg and
1144 * forward it to the target netisr.
1146 * NOTE: so_port MUST NOT be checked in the target
1150 smsg->nm_priv = flags; /* ip_output flags */
1152 smsg->nm_control = m_opt; /* XXX save ipopt */
1153 smsg->base.lmsg.ms_flags |= MSGF_IGNSOPORT;
1154 smsg->base.nm_dispatch = udp_send_redispatch;
1155 lwkt_forwardmsg(port, &smsg->base.lmsg);
1158 * Recreate the netmsg, since the original mbuf
1159 * could have been changed. And send it to the
1162 * NOTE: so_port MUST NOT be checked in the target
1165 smsg = &m->m_hdr.mh_sndmsg;
1166 netmsg_init(&smsg->base, so, &netisr_apanic_rport,
1167 MSGF_IGNSOPORT, udp_send_redispatch);
1168 smsg->nm_priv = flags; /* ip_output flags */
1169 smsg->nm_flags = pru_flags;
1171 smsg->nm_control = m_opt; /* XXX save ipopt */
1172 lwkt_sendmsg(port, &smsg->base.lmsg);
1175 /* This UDP datagram is redispatched; done */
1176 logudp(send_redisp, inp);
1181 logudp(send_ipout, inp);
1182 error = ip_output(m, inp->inp_options, &inp->inp_route, flags,
1183 inp->inp_moptions, inp);
1190 if (pru_flags & PRUS_HELDTD)
1192 if (pru_flags & PRUS_FREEADDR)
1193 kfree(dstaddr, M_SONAME);
1194 if ((pru_flags & PRUS_NOREPLY) == 0)
1195 lwkt_replymsg(&msg->send.base.lmsg, error);
1197 logudp(send_end, inp);
1200 u_long udp_sendspace = 9216; /* really max datagram size */
1201 /* 40 1K datagrams */
1202 SYSCTL_INT(_net_inet_udp, UDPCTL_MAXDGRAM, maxdgram, CTLFLAG_RW,
1203 &udp_sendspace, 0, "Maximum outgoing UDP datagram size");
1205 u_long udp_recvspace = 40 * (1024 +
1207 sizeof(struct sockaddr_in6)
1209 sizeof(struct sockaddr_in)
1212 SYSCTL_INT(_net_inet_udp, UDPCTL_RECVSPACE, recvspace, CTLFLAG_RW,
1213 &udp_recvspace, 0, "Maximum incoming UDP datagram size");
1216 * This should never happen, since UDP socket does not support
1217 * connection acception (SO_ACCEPTCONN, i.e. listen(2)).
1220 udp_abort(netmsg_t msg __unused)
1222 panic("udp_abort is called");
1226 udp_attach(netmsg_t msg)
1228 struct socket *so = msg->attach.base.nm_so;
1229 struct pru_attach_info *ai = msg->attach.nm_ai;
1238 error = soreserve(so, udp_sendspace, udp_recvspace, ai->sb_rlimit);
1242 error = in_pcballoc(so, &udbinfo[mycpuid]);
1246 inp = (struct inpcb *)so->so_pcb;
1247 inp->inp_vflag |= INP_IPV4;
1248 inp->inp_ip_ttl = ip_defttl;
1251 lwkt_replymsg(&msg->attach.base.lmsg, error);
1255 udp_inswildcardhash_oncpu(struct inpcb *inp)
1259 KASSERT(inp->inp_pcbinfo == &udbinfo[mycpuid],
1260 ("not on owner cpu"));
1262 in_pcbinswildcardhash(inp);
1263 for (cpu = 0; cpu < ncpus2; ++cpu) {
1264 if (cpu == mycpuid) {
1266 * This inpcb has been inserted by the above
1267 * in_pcbinswildcardhash().
1271 in_pcbinswildcardhash_oncpu(inp, &udbinfo[cpu]);
1274 /* TODO need to change port again, if SO_REUSEPORT */
1279 udp_inswildcardhash_dispatch(netmsg_t msg)
1281 struct inpcb *inp = msg->base.nm_so->so_pcb;
1282 lwkt_msg_t lmsg = &msg->base.lmsg;
1283 boolean_t forwarded;
1285 KASSERT(inp->inp_lport != 0, ("local port not set yet"));
1286 KASSERT((ntohs(inp->inp_lport) & ncpus2_mask) == mycpuid,
1287 ("not target cpu"));
1289 in_pcblink(inp, &udbinfo[mycpuid]);
1291 forwarded = udp_inswildcardhash_oncpu(inp);
1293 /* The message is further forwarded, so we are done here. */
1297 if (lmsg->ms_flags & MSGF_UDP_SEND) {
1299 /* msg is replied by udp_send() */
1301 lwkt_replymsg(lmsg, lmsg->ms_error);
1306 udp_sosetport(struct lwkt_msg *msg, lwkt_port_t port)
1308 sosetport(((struct netmsg_base *)msg)->nm_so, port);
1312 udp_inswildcardhash(struct inpcb *inp, struct netmsg_base *msg, int error)
1314 struct route *ro = &inp->inp_route;
1315 lwkt_msg_t lmsg = &msg->lmsg;
1319 * Always clear the route cache, so we don't need to
1320 * worry about any owner CPU changes later.
1322 if (ro->ro_rt != NULL)
1324 bzero(ro, sizeof(*ro));
1326 KASSERT(inp->inp_lport != 0, ("local port not set yet"));
1327 cpu = ntohs(inp->inp_lport) & ncpus2_mask;
1329 lmsg->ms_error = error;
1330 if (cpu != mycpuid) {
1331 struct lwkt_port *port = netisr_cpuport(cpu);
1334 * We are moving the protocol processing port the socket
1335 * is on, we have to unlink here and re-link on the
1338 in_pcbunlink(inp, &udbinfo[mycpuid]);
1339 msg->nm_dispatch = udp_inswildcardhash_dispatch;
1341 /* See the related comment in tcp_usrreq.c tcp_connect() */
1342 lwkt_setmsg_receipt(lmsg, udp_sosetport);
1343 lwkt_forwardmsg(port, lmsg);
1344 return TRUE; /* forwarded */
1347 return udp_inswildcardhash_oncpu(inp);
1351 udp_bind(netmsg_t msg)
1353 struct socket *so = msg->bind.base.nm_so;
1359 struct sockaddr *nam = msg->bind.nm_nam;
1360 struct thread *td = msg->bind.nm_td;
1362 error = in_pcbbind(inp, nam, td);
1364 struct sockaddr_in *sin = (struct sockaddr_in *)nam;
1365 boolean_t forwarded;
1367 if (sin->sin_addr.s_addr != INADDR_ANY)
1368 inp->inp_flags |= INP_WASBOUND_NOTANY;
1370 forwarded = udp_inswildcardhash(inp,
1371 &msg->bind.base, 0);
1374 * The message is further forwarded, so
1383 lwkt_replymsg(&msg->bind.base.lmsg, error);
1387 udp_connect(netmsg_t msg)
1389 struct socket *so = msg->connect.base.nm_so;
1390 struct sockaddr *nam = msg->connect.nm_nam;
1391 struct thread *td = msg->connect.nm_td;
1393 struct sockaddr_in *sin = (struct sockaddr_in *)nam;
1394 struct sockaddr_in *if_sin;
1395 struct lwkt_port *port;
1398 KKASSERT(msg->connect.nm_m == NULL);
1406 if (msg->connect.nm_flags & PRUC_RECONNECT) {
1407 msg->connect.nm_flags &= ~PRUC_RECONNECT;
1408 in_pcblink(inp, &udbinfo[mycpuid]);
1411 if (inp->inp_faddr.s_addr != INADDR_ANY) {
1418 * Bind if we have to
1420 if (inp->inp_lport == 0 ||
1421 (td->td_proc && td->td_proc->p_ucred->cr_prison != NULL &&
1422 inp->inp_laddr.s_addr == INADDR_ANY)) {
1423 error = in_pcbbind(inp, NULL, td);
1429 * Calculate the correct protocol processing thread. The connect
1430 * operation must run there.
1432 error = in_pcbladdr(inp, nam, &if_sin, td);
1435 if (!prison_remote_ip(td, nam)) {
1436 error = EAFNOSUPPORT; /* IPv6 only jail */
1440 port = udp_addrport(sin->sin_addr.s_addr, sin->sin_port,
1441 inp->inp_laddr.s_addr != INADDR_ANY ?
1442 inp->inp_laddr.s_addr : if_sin->sin_addr.s_addr, inp->inp_lport);
1443 if (port != &curthread->td_msgport) {
1444 struct route *ro = &inp->inp_route;
1445 lwkt_msg_t lmsg = &msg->connect.base.lmsg;
1446 int nm_flags = PRUC_RECONNECT;
1449 * in_pcbladdr() may have allocated a route entry for us
1450 * on the current CPU, but we need a route entry on the
1451 * inpcb's owner CPU, so free it here.
1453 if (ro->ro_rt != NULL)
1455 bzero(ro, sizeof(*ro));
1457 if (inp->inp_flags & INP_WILDCARD) {
1459 * Remove this inpcb from the wildcard hash before
1460 * the socket's msgport changes.
1462 udp_remwildcardhash(inp);
1466 * We are moving the protocol processing port the socket
1467 * is on, we have to unlink here and re-link on the
1470 in_pcbunlink(inp, &udbinfo[mycpuid]);
1471 msg->connect.nm_flags |= nm_flags;
1473 /* See the related comment in tcp_usrreq.c tcp_connect() */
1474 lwkt_setmsg_receipt(lmsg, udp_sosetport);
1475 lwkt_forwardmsg(port, lmsg);
1476 /* msg invalid now */
1479 error = udp_connect_oncpu(inp, sin, if_sin);
1481 if (error && inp != NULL && inp->inp_lport != 0 &&
1482 (inp->inp_flags & INP_WILDCARD) == 0) {
1483 boolean_t forwarded;
1485 /* Connect failed; put it to wildcard hash. */
1486 forwarded = udp_inswildcardhash(inp, &msg->connect.base,
1490 * The message is further forwarded, so we are done
1496 lwkt_replymsg(&msg->connect.base.lmsg, error);
1500 udp_remwildcardhash(struct inpcb *inp)
1504 KASSERT(inp->inp_pcbinfo == &udbinfo[mycpuid],
1505 ("not on owner cpu"));
1507 for (cpu = 0; cpu < ncpus2; ++cpu) {
1508 if (cpu == mycpuid) {
1510 * This inpcb will be removed by the later
1511 * in_pcbremwildcardhash().
1515 in_pcbremwildcardhash_oncpu(inp, &udbinfo[cpu]);
1517 in_pcbremwildcardhash(inp);
1521 udp_connect_oncpu(struct inpcb *inp, struct sockaddr_in *sin,
1522 struct sockaddr_in *if_sin)
1524 struct socket *so = inp->inp_socket;
1527 oinp = in_pcblookup_hash(inp->inp_pcbinfo,
1528 sin->sin_addr, sin->sin_port,
1529 inp->inp_laddr.s_addr != INADDR_ANY ?
1530 inp->inp_laddr : if_sin->sin_addr, inp->inp_lport, FALSE, NULL);
1535 * No more errors can occur, finish adjusting the socket
1536 * and change the processing port to reflect the connected
1537 * socket. Once set we can no longer safely mess with the
1541 if (inp->inp_flags & INP_WILDCARD)
1542 udp_remwildcardhash(inp);
1544 if (inp->inp_laddr.s_addr == INADDR_ANY)
1545 inp->inp_laddr = if_sin->sin_addr;
1546 inp->inp_faddr = sin->sin_addr;
1547 inp->inp_fport = sin->sin_port;
1548 in_pcbinsconnhash(inp);
1556 udp_detach2(struct socket *so)
1558 in_pcbdetach(so->so_pcb);
1564 udp_detach_final_dispatch(netmsg_t msg)
1566 udp_detach2(msg->base.nm_so);
1570 udp_detach_oncpu_dispatch(netmsg_t msg)
1572 struct netmsg_base *clomsg = &msg->base;
1573 struct socket *so = clomsg->nm_so;
1574 struct inpcb *inp = so->so_pcb;
1575 struct thread *td = curthread;
1576 int nextcpu, cpuid = mycpuid;
1578 KASSERT(td->td_type == TD_TYPE_NETISR, ("not in netisr"));
1580 if (inp->inp_flags & INP_WILDCARD) {
1582 * This inp will be removed on the inp's
1583 * owner CPU later, so don't do it now.
1585 if (&td->td_msgport != so->so_port)
1586 in_pcbremwildcardhash_oncpu(inp, &udbinfo[cpuid]);
1591 * Free and clear multicast socket option,
1592 * which is only accessed in netisr0.
1594 ip_freemoptions(inp->inp_moptions);
1595 inp->inp_moptions = NULL;
1598 nextcpu = cpuid + 1;
1599 if (nextcpu < ncpus2) {
1600 lwkt_forwardmsg(netisr_cpuport(nextcpu), &clomsg->lmsg);
1603 * No one could see this inpcb now; destroy this
1604 * inpcb in its owner netisr.
1606 netmsg_init(clomsg, so, &netisr_apanic_rport, 0,
1607 udp_detach_final_dispatch);
1608 lwkt_sendmsg(so->so_port, &clomsg->lmsg);
1613 udp_detach(netmsg_t msg)
1615 struct socket *so = msg->detach.base.nm_so;
1616 struct netmsg_base *clomsg;
1621 lwkt_replymsg(&msg->detach.base.lmsg, EINVAL);
1626 * Reply EJUSTRETURN ASAP, we will call sodiscard() and
1629 lwkt_replymsg(&msg->detach.base.lmsg, EJUSTRETURN);
1632 /* Only one CPU, detach the inpcb directly. */
1638 * Remove this inpcb from the inpcb list first, so that
1639 * no one could find this inpcb from the inpcb list.
1644 * Go through netisrs which process UDP to make sure
1645 * no one could find this inpcb anymore.
1647 clomsg = &so->so_clomsg;
1648 netmsg_init(clomsg, so, &netisr_apanic_rport, MSGF_IGNSOPORT,
1649 udp_detach_oncpu_dispatch);
1650 lwkt_sendmsg(netisr_cpuport(0), &clomsg->lmsg);
1654 udp_disconnect(netmsg_t msg)
1656 struct socket *so = msg->disconnect.base.nm_so;
1658 boolean_t forwarded;
1666 if (inp->inp_faddr.s_addr == INADDR_ANY) {
1671 soclrstate(so, SS_ISCONNECTED); /* XXX */
1673 in_pcbdisconnect(inp);
1676 * Follow traditional BSD behavior and retain the local port
1677 * binding. But, fix the old misbehavior of overwriting any
1678 * previously bound local address.
1680 if (!(inp->inp_flags & INP_WASBOUND_NOTANY))
1681 inp->inp_laddr.s_addr = INADDR_ANY;
1683 if (so->so_state & SS_ISCLOSING) {
1685 * If this socket is being closed, there is no need
1686 * to put this socket back into wildcard hash table.
1692 forwarded = udp_inswildcardhash(inp, &msg->disconnect.base, 0);
1695 * The message is further forwarded, so we are done
1701 lwkt_replymsg(&msg->disconnect.base.lmsg, error);
1705 udp_shutdown(netmsg_t msg)
1707 struct socket *so = msg->shutdown.base.nm_so;
1718 lwkt_replymsg(&msg->shutdown.base.lmsg, error);
1721 struct pr_usrreqs udp_usrreqs = {
1722 .pru_abort = udp_abort,
1723 .pru_accept = pr_generic_notsupp,
1724 .pru_attach = udp_attach,
1725 .pru_bind = udp_bind,
1726 .pru_connect = udp_connect,
1727 .pru_connect2 = pr_generic_notsupp,
1728 .pru_control = in_control_dispatch,
1729 .pru_detach = udp_detach,
1730 .pru_disconnect = udp_disconnect,
1731 .pru_listen = pr_generic_notsupp,
1732 .pru_peeraddr = in_setpeeraddr_dispatch,
1733 .pru_rcvd = pr_generic_notsupp,
1734 .pru_rcvoob = pr_generic_notsupp,
1735 .pru_send = udp_send,
1736 .pru_sense = pru_sense_null,
1737 .pru_shutdown = udp_shutdown,
1738 .pru_sockaddr = in_setsockaddr_dispatch,
1739 .pru_sosend = sosendudp,
1740 .pru_soreceive = soreceive