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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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 INP_DIRECT_DETACH INP_FLAG_PROTO2
125 #define UDP_KTR_STRING "inp=%p"
126 #define UDP_KTR_ARGS struct inpcb *inp
129 #define KTR_UDP KTR_ALL
132 KTR_INFO_MASTER(udp);
133 KTR_INFO(KTR_UDP, udp, send_beg, 0, UDP_KTR_STRING, UDP_KTR_ARGS);
134 KTR_INFO(KTR_UDP, udp, send_end, 1, UDP_KTR_STRING, UDP_KTR_ARGS);
135 KTR_INFO(KTR_UDP, udp, send_ipout, 2, UDP_KTR_STRING, UDP_KTR_ARGS);
136 KTR_INFO(KTR_UDP, udp, redisp_ipout_beg, 3, UDP_KTR_STRING, UDP_KTR_ARGS);
137 KTR_INFO(KTR_UDP, udp, redisp_ipout_end, 4, UDP_KTR_STRING, UDP_KTR_ARGS);
138 KTR_INFO(KTR_UDP, udp, send_redisp, 5, UDP_KTR_STRING, UDP_KTR_ARGS);
139 KTR_INFO(KTR_UDP, udp, send_inswildcard, 6, UDP_KTR_STRING, UDP_KTR_ARGS);
141 #define logudp(name, inp) KTR_LOG(udp_##name, inp)
144 * UDP protocol implementation.
145 * Per RFC 768, August, 1980.
148 static int udpcksum = 1;
150 static int udpcksum = 0; /* XXX */
152 SYSCTL_INT(_net_inet_udp, UDPCTL_CHECKSUM, checksum, CTLFLAG_RW,
153 &udpcksum, 0, "Enable checksumming of UDP packets");
156 SYSCTL_INT(_net_inet_udp, OID_AUTO, log_in_vain, CTLFLAG_RW,
157 &log_in_vain, 0, "Log all incoming UDP packets");
159 static int blackhole = 0;
160 SYSCTL_INT(_net_inet_udp, OID_AUTO, blackhole, CTLFLAG_RW,
161 &blackhole, 0, "Do not send port unreachables for refused connects");
163 static int strict_mcast_mship = 1;
164 SYSCTL_INT(_net_inet_udp, OID_AUTO, strict_mcast_mship, CTLFLAG_RW,
165 &strict_mcast_mship, 0, "Only send multicast to member sockets");
167 int udp_sosend_async = 1;
168 SYSCTL_INT(_net_inet_udp, OID_AUTO, sosend_async, CTLFLAG_RW,
169 &udp_sosend_async, 0, "UDP asynchronized pru_send");
171 int udp_sosend_prepend = 1;
172 SYSCTL_INT(_net_inet_udp, OID_AUTO, sosend_prepend, CTLFLAG_RW,
173 &udp_sosend_prepend, 0,
174 "Prepend enough space for proto and link header in pru_send");
176 static int udp_reuseport_ext = 1;
177 SYSCTL_INT(_net_inet_udp, OID_AUTO, reuseport_ext, CTLFLAG_RW,
178 &udp_reuseport_ext, 0, "SO_REUSEPORT extension");
180 struct inpcbinfo udbinfo[MAXCPU];
183 #define UDBHASHSIZE 16
186 struct udpstat udpstat_percpu[MAXCPU] __cachealign;
188 static void udp_append(struct inpcb *last, struct ip *ip,
189 struct mbuf *n, int off, struct sockaddr_in *udp_in);
191 static int udp_connect_oncpu(struct inpcb *inp, struct sockaddr_in *sin,
192 struct sockaddr_in *if_sin);
194 static boolean_t udp_inswildcardhash(struct inpcb *inp,
195 struct netmsg_base *msg, int error);
196 static void udp_remwildcardhash(struct inpcb *inp);
201 struct inpcbportinfo *portinfo;
204 portinfo = kmalloc_cachealign(sizeof(*portinfo) * ncpus2, M_PCB,
207 for (cpu = 0; cpu < ncpus2; cpu++) {
208 struct inpcbinfo *uicb = &udbinfo[cpu];
212 * UDP pcb list, wildcard hash table and localgroup hash
215 in_pcbinfo_init(uicb, cpu, TRUE);
216 uicb->hashbase = hashinit(UDBHASHSIZE, M_PCB, &uicb->hashmask);
218 in_pcbportinfo_init(&portinfo[cpu], UDBHASHSIZE, TRUE, cpu);
219 uicb->portinfo = portinfo;
220 uicb->portinfo_mask = ncpus2_mask;
222 uicb->wildcardhashbase = hashinit(UDBHASHSIZE, M_PCB,
223 &uicb->wildcardhashmask);
224 uicb->localgrphashbase = hashinit(UDBHASHSIZE, M_PCB,
225 &uicb->localgrphashmask);
227 uicb->ipi_size = sizeof(struct inpcb);
231 * Initialize UDP statistics counters for each CPU.
233 for (cpu = 0; cpu < ncpus; ++cpu)
234 bzero(&udpstat_percpu[cpu], sizeof(struct udpstat));
238 sysctl_udpstat(SYSCTL_HANDLER_ARGS)
242 for (cpu = 0; cpu < ncpus; ++cpu) {
243 if ((error = SYSCTL_OUT(req, &udpstat_percpu[cpu],
244 sizeof(struct udpstat))))
246 if ((error = SYSCTL_IN(req, &udpstat_percpu[cpu],
247 sizeof(struct udpstat))))
253 SYSCTL_PROC(_net_inet_udp, UDPCTL_STATS, stats, (CTLTYPE_OPAQUE | CTLFLAG_RW),
254 0, 0, sysctl_udpstat, "S,udpstat", "UDP statistics");
257 udp_ctloutput(netmsg_t msg)
259 struct socket *so = msg->base.nm_so;
260 struct sockopt *sopt = msg->ctloutput.nm_sopt;
261 struct inpcb *inp = so->so_pcb;
263 if (sopt->sopt_level == IPPROTO_IP && sopt->sopt_dir == SOPT_SET) {
264 switch (sopt->sopt_name) {
265 case IP_MULTICAST_IF:
266 case IP_MULTICAST_VIF:
267 case IP_MULTICAST_TTL:
268 case IP_MULTICAST_LOOP:
269 case IP_ADD_MEMBERSHIP:
270 case IP_DROP_MEMBERSHIP:
272 * This pr_ctloutput msg will be forwarded
273 * to netisr0 to run; we can't do direct
277 * Don't optimize for the sockets whose
278 * current so_port is netisr0's msgport.
279 * These sockets could be connect(2)'ed
280 * later and the so_port will be changed.
282 inp->inp_flags &= ~INP_DIRECT_DETACH;
286 return ip_ctloutput(msg);
290 * Check multicast packets to make sure they are only sent to sockets with
291 * multicast memberships for the packet's destination address and arrival
292 * interface. Multicast packets to multicast-unaware sockets are also
295 * Returns 0 if the packet is acceptable, -1 if it is not.
298 check_multicast_membership(const struct ip *ip, const struct inpcb *inp,
299 const struct mbuf *m)
301 const struct ip_moptions *mopt;
304 if (strict_mcast_mship == 0 ||
305 !IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) {
309 KASSERT(&curthread->td_msgport == netisr_cpuport(0),
310 ("multicast input not in netisr0"));
312 mopt = inp->inp_moptions;
315 for (mshipno = 0; mshipno < mopt->imo_num_memberships; ++mshipno) {
316 const struct in_multi *maddr = mopt->imo_membership[mshipno];
318 if (ip->ip_dst.s_addr == maddr->inm_addr.s_addr &&
319 m->m_pkthdr.rcvif == maddr->inm_ifp) {
326 struct udp_mcast_arg {
332 struct sockaddr_in *udp_in;
336 udp_mcast_input(struct udp_mcast_arg *arg)
338 struct inpcb *inp = arg->inp;
339 struct inpcb *last = arg->last;
340 struct ip *ip = arg->ip;
341 struct mbuf *m = arg->m;
343 if (check_multicast_membership(ip, inp, m) < 0)
344 return ERESTART; /* caller continue */
350 /* check AH/ESP integrity. */
351 if (ipsec4_in_reject_so(m, last->inp_socket))
352 ipsecstat.in_polvio++;
353 /* do not inject data to pcb */
357 /* check AH/ESP integrity. */
358 if (ipsec4_in_reject(m, last))
361 #endif /*FAST_IPSEC*/
362 if ((n = m_copypacket(m, M_NOWAIT)) != NULL)
363 udp_append(last, ip, n,
364 arg->iphlen + sizeof(struct udphdr),
367 arg->last = last = inp;
370 * Don't look for additional matches if this one does
371 * not have either the SO_REUSEPORT or SO_REUSEADDR
372 * socket options set. This heuristic avoids searching
373 * through all pcbs in the common case of a non-shared
374 * port. It * assumes that an application will never
375 * clear these options after setting them.
377 if (!(last->inp_socket->so_options &
378 (SO_REUSEPORT | SO_REUSEADDR)))
379 return EJUSTRETURN; /* caller stop */
384 udp_input(struct mbuf **mp, int *offp, int proto)
386 struct sockaddr_in udp_in = { sizeof udp_in, AF_INET };
392 struct mbuf *opts = NULL;
395 struct inpcbinfo *pcbinfo = &udbinfo[mycpuid];
402 udp_stat.udps_ipackets++;
405 * Strip IP options, if any; should skip this,
406 * make available to user, and use on returned packets,
407 * but we don't yet have a way to check the checksum
408 * with options still present.
410 if (iphlen > sizeof(struct ip)) {
412 iphlen = sizeof(struct ip);
416 * IP and UDP headers are together in first mbuf.
417 * Already checked and pulled up in ip_demux().
419 KASSERT(m->m_len >= iphlen + sizeof(struct udphdr),
420 ("UDP header not in one mbuf"));
422 ip = mtod(m, struct ip *);
423 uh = (struct udphdr *)((caddr_t)ip + iphlen);
425 /* destination port of 0 is illegal, based on RFC768. */
426 if (uh->uh_dport == 0)
430 * Make mbuf data length reflect UDP length.
431 * If not enough data to reflect UDP length, drop.
433 len = ntohs((u_short)uh->uh_ulen);
434 if (ip->ip_len != len) {
435 if (len > ip->ip_len || len < sizeof(struct udphdr)) {
436 udp_stat.udps_badlen++;
439 m_adj(m, len - ip->ip_len);
440 /* ip->ip_len = len; */
443 * Save a copy of the IP header in case we want restore it
444 * for sending an ICMP error message in response.
449 * Checksum extended UDP header and data.
452 if (m->m_pkthdr.csum_flags & CSUM_DATA_VALID) {
453 if (m->m_pkthdr.csum_flags & CSUM_PSEUDO_HDR)
454 uh->uh_sum = m->m_pkthdr.csum_data;
456 uh->uh_sum = in_pseudo(ip->ip_src.s_addr,
457 ip->ip_dst.s_addr, htonl((u_short)len +
458 m->m_pkthdr.csum_data + IPPROTO_UDP));
459 uh->uh_sum ^= 0xffff;
463 bcopy(((struct ipovly *)ip)->ih_x1, b, 9);
464 bzero(((struct ipovly *)ip)->ih_x1, 9);
465 ((struct ipovly *)ip)->ih_len = uh->uh_ulen;
466 uh->uh_sum = in_cksum(m, len + sizeof(struct ip));
467 bcopy(b, ((struct ipovly *)ip)->ih_x1, 9);
470 udp_stat.udps_badsum++;
472 return(IPPROTO_DONE);
475 udp_stat.udps_nosum++;
477 if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr)) ||
478 in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) {
479 struct inpcbhead *connhead;
480 struct inpcontainer *ic, *ic_marker;
481 struct inpcontainerhead *ichead;
482 struct udp_mcast_arg arg;
487 * Deliver a multicast or broadcast datagram to *all* sockets
488 * for which the local and remote addresses and ports match
489 * those of the incoming datagram. This allows more than
490 * one process to receive multi/broadcasts on the same port.
491 * (This really ought to be done for unicast datagrams as
492 * well, but that would cause problems with existing
493 * applications that open both address-specific sockets and
494 * a wildcard socket listening to the same port -- they would
495 * end up receiving duplicates of every unicast datagram.
496 * Those applications open the multiple sockets to overcome an
497 * inadequacy of the UDP socket interface, but for backwards
498 * compatibility we avoid the problem here rather than
499 * fixing the interface. Maybe 4.5BSD will remedy this?)
503 * Construct sockaddr format source address.
505 udp_in.sin_port = uh->uh_sport;
506 udp_in.sin_addr = ip->ip_src;
507 arg.udp_in = &udp_in;
509 * Locate pcb(s) for datagram.
510 * (Algorithm copied from raw_intr().)
515 connhead = &pcbinfo->hashbase[
516 INP_PCBCONNHASH(ip->ip_src.s_addr, uh->uh_sport,
517 ip->ip_dst.s_addr, uh->uh_dport, pcbinfo->hashmask)];
518 LIST_FOREACH(inp, connhead, inp_hash) {
520 if (!INP_ISIPV4(inp))
523 if (!in_hosteq(inp->inp_faddr, ip->ip_src) ||
524 !in_hosteq(inp->inp_laddr, ip->ip_dst) ||
525 inp->inp_fport != uh->uh_sport ||
526 inp->inp_lport != uh->uh_dport)
534 error = udp_mcast_input(&arg);
535 if (error == ERESTART)
539 if (error == EJUSTRETURN)
543 ichead = &pcbinfo->wildcardhashbase[
544 INP_PCBWILDCARDHASH(uh->uh_dport,
545 pcbinfo->wildcardhashmask)];
546 ic_marker = in_pcbcontainer_marker(mycpuid);
548 GET_PCBINFO_TOKEN(pcbinfo);
549 LIST_INSERT_HEAD(ichead, ic_marker, ic_list);
550 while ((ic = LIST_NEXT(ic_marker, ic_list)) != NULL) {
551 LIST_REMOVE(ic_marker, ic_list);
552 LIST_INSERT_AFTER(ic, ic_marker, ic_list);
555 if (inp->inp_flags & INP_PLACEMARKER)
558 if (!INP_ISIPV4(inp))
561 if (inp->inp_lport != uh->uh_dport)
563 if (inp->inp_laddr.s_addr != INADDR_ANY &&
564 inp->inp_laddr.s_addr != ip->ip_dst.s_addr)
572 error = udp_mcast_input(&arg);
573 if (error == ERESTART)
577 if (error == EJUSTRETURN)
580 LIST_REMOVE(ic_marker, ic_list);
581 REL_PCBINFO_TOKEN(pcbinfo);
585 * No matching pcb found; discard datagram.
586 * (No need to send an ICMP Port Unreachable
587 * for a broadcast or multicast datgram.)
589 udp_stat.udps_noportbcast++;
593 /* check AH/ESP integrity. */
594 if (ipsec4_in_reject_so(m, last->inp_socket)) {
595 ipsecstat.in_polvio++;
600 /* check AH/ESP integrity. */
601 if (ipsec4_in_reject(m, last))
603 #endif /*FAST_IPSEC*/
604 udp_append(last, ip, m, iphlen + sizeof(struct udphdr),
606 return(IPPROTO_DONE);
609 * Locate pcb for datagram.
611 inp = in_pcblookup_pkthash(pcbinfo, ip->ip_src, uh->uh_sport,
612 ip->ip_dst, uh->uh_dport, TRUE, m->m_pkthdr.rcvif,
613 udp_reuseport_ext ? m : NULL);
616 char buf[sizeof "aaa.bbb.ccc.ddd"];
618 strcpy(buf, inet_ntoa(ip->ip_dst));
620 "Connection attempt to UDP %s:%d from %s:%d\n",
621 buf, ntohs(uh->uh_dport), inet_ntoa(ip->ip_src),
622 ntohs(uh->uh_sport));
624 udp_stat.udps_noport++;
625 if (m->m_flags & (M_BCAST | M_MCAST)) {
626 udp_stat.udps_noportbcast++;
632 if (badport_bandlim(BANDLIM_ICMP_UNREACH) < 0)
636 ip->ip_len += iphlen;
637 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
638 return(IPPROTO_DONE);
640 KASSERT(INP_ISIPV4(inp), ("not inet inpcb"));
642 if (ipsec4_in_reject_so(m, inp->inp_socket)) {
643 ipsecstat.in_polvio++;
648 if (ipsec4_in_reject(m, inp))
650 #endif /*FAST_IPSEC*/
652 * Check the minimum TTL for socket.
654 if (ip->ip_ttl < inp->inp_ip_minttl)
658 * Construct sockaddr format source address.
659 * Stuff source address and datagram in user buffer.
661 udp_in.sin_port = uh->uh_sport;
662 udp_in.sin_addr = ip->ip_src;
663 if ((inp->inp_flags & INP_CONTROLOPTS) ||
664 (inp->inp_socket->so_options & SO_TIMESTAMP))
665 ip_savecontrol(inp, &opts, ip, m);
666 m_adj(m, iphlen + sizeof(struct udphdr));
668 lwkt_gettoken(&inp->inp_socket->so_rcv.ssb_token);
669 if (ssb_appendaddr(&inp->inp_socket->so_rcv,
670 (struct sockaddr *)&udp_in, m, opts) == 0) {
671 lwkt_reltoken(&inp->inp_socket->so_rcv.ssb_token);
672 udp_stat.udps_fullsock++;
675 lwkt_reltoken(&inp->inp_socket->so_rcv.ssb_token);
676 sorwakeup(inp->inp_socket);
677 return(IPPROTO_DONE);
682 return(IPPROTO_DONE);
686 * subroutine of udp_input(), mainly for source code readability.
687 * caller must properly init udp_ip6 and udp_in6 beforehand.
690 udp_append(struct inpcb *last, struct ip *ip, struct mbuf *n, int off,
691 struct sockaddr_in *udp_in)
693 struct mbuf *opts = NULL;
696 KASSERT(INP_ISIPV4(last), ("not inet inpcb"));
698 if (last->inp_flags & INP_CONTROLOPTS ||
699 last->inp_socket->so_options & SO_TIMESTAMP)
700 ip_savecontrol(last, &opts, ip, n);
703 lwkt_gettoken(&last->inp_socket->so_rcv.ssb_token);
704 ret = ssb_appendaddr(&last->inp_socket->so_rcv,
705 (struct sockaddr *)udp_in, n, opts);
706 lwkt_reltoken(&last->inp_socket->so_rcv.ssb_token);
711 udp_stat.udps_fullsock++;
713 sorwakeup(last->inp_socket);
718 * Notify a udp user of an asynchronous error;
719 * just wake up so that he can collect error status.
722 udp_notify(struct inpcb *inp, int error)
724 inp->inp_socket->so_error = error;
725 sorwakeup(inp->inp_socket);
726 sowwakeup(inp->inp_socket);
729 struct netmsg_udp_notify {
730 struct netmsg_base base;
731 inp_notify_t nm_notify;
732 struct in_addr nm_faddr;
737 udp_notifyall_oncpu(netmsg_t msg)
739 struct netmsg_udp_notify *nm = (struct netmsg_udp_notify *)msg;
740 int nextcpu, cpu = mycpuid;
742 in_pcbnotifyall(&udbinfo[cpu], nm->nm_faddr, nm->nm_arg, nm->nm_notify);
745 if (nextcpu < ncpus2)
746 lwkt_forwardmsg(netisr_cpuport(nextcpu), &nm->base.lmsg);
748 lwkt_replymsg(&nm->base.lmsg, 0);
752 udp_get_inpnotify(int cmd, const struct sockaddr *sa,
753 struct ip **ip0, int *cpuid)
755 struct in_addr faddr;
756 struct ip *ip = *ip0;
757 inp_notify_t notify = udp_notify;
759 faddr = ((const struct sockaddr_in *)sa)->sin_addr;
760 if (sa->sa_family != AF_INET || faddr.s_addr == INADDR_ANY)
763 if (PRC_IS_REDIRECT(cmd)) {
765 notify = in_rtchange;
766 } else if (cmd == PRC_HOSTDEAD) {
768 } else if ((unsigned)cmd >= PRC_NCMDS || inetctlerrmap[cmd] == 0) {
774 /* Go through all CPUs */
777 const struct udphdr *uh;
779 uh = (const struct udphdr *)
780 ((caddr_t)ip + (ip->ip_hl << 2));
781 *cpuid = udp_addrcpu(faddr.s_addr, uh->uh_dport,
782 ip->ip_src.s_addr, uh->uh_sport);
791 udp_ctlinput(netmsg_t msg)
793 struct sockaddr *sa = msg->ctlinput.nm_arg;
794 struct ip *ip = msg->ctlinput.nm_extra;
795 int cmd = msg->ctlinput.nm_cmd, cpuid;
797 struct in_addr faddr;
799 notify = udp_get_inpnotify(cmd, sa, &ip, &cpuid);
803 faddr = ((struct sockaddr_in *)sa)->sin_addr;
805 const struct udphdr *uh;
808 if (cpuid != mycpuid)
811 uh = (const struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
812 inp = in_pcblookup_hash(&udbinfo[mycpuid], faddr, uh->uh_dport,
813 ip->ip_src, uh->uh_sport, 0, NULL);
814 if (inp != NULL && inp->inp_socket != NULL)
815 notify(inp, inetctlerrmap[cmd]);
816 } else if (msg->ctlinput.nm_direct) {
817 if (cpuid != ncpus && cpuid != mycpuid)
819 if (mycpuid >= ncpus2)
822 in_pcbnotifyall(&udbinfo[mycpuid], faddr, inetctlerrmap[cmd],
825 struct netmsg_udp_notify *nm;
827 KKASSERT(&curthread->td_msgport == netisr_cpuport(0));
828 nm = kmalloc(sizeof(*nm), M_LWKTMSG, M_INTWAIT);
829 netmsg_init(&nm->base, NULL, &netisr_afree_rport,
830 0, udp_notifyall_oncpu);
831 nm->nm_faddr = faddr;
832 nm->nm_arg = inetctlerrmap[cmd];
833 nm->nm_notify = notify;
834 lwkt_sendmsg(netisr_cpuport(0), &nm->base.lmsg);
837 lwkt_replymsg(&msg->lmsg, 0);
840 SYSCTL_PROC(_net_inet_udp, UDPCTL_PCBLIST, pcblist, CTLFLAG_RD, udbinfo, 0,
841 in_pcblist_global_ncpus2, "S,xinpcb", "List of active UDP sockets");
844 udp_getcred(SYSCTL_HANDLER_ARGS)
846 struct sockaddr_in addrs[2];
847 struct ucred cred0, *cred = NULL;
849 int error, cpu, origcpu;
851 error = priv_check(req->td, PRIV_ROOT);
854 error = SYSCTL_IN(req, addrs, sizeof addrs);
859 cpu = udp_addrcpu(addrs[1].sin_addr.s_addr, addrs[1].sin_port,
860 addrs[0].sin_addr.s_addr, addrs[0].sin_port);
862 lwkt_migratecpu(cpu);
864 inp = in_pcblookup_hash(&udbinfo[cpu],
865 addrs[1].sin_addr, addrs[1].sin_port,
866 addrs[0].sin_addr, addrs[0].sin_port, TRUE, NULL);
867 if (inp == NULL || inp->inp_socket == NULL) {
869 } else if (inp->inp_socket->so_cred != NULL) {
870 cred0 = *(inp->inp_socket->so_cred);
874 lwkt_migratecpu(origcpu);
879 return SYSCTL_OUT(req, cred, sizeof(struct ucred));
881 SYSCTL_PROC(_net_inet_udp, OID_AUTO, getcred, CTLTYPE_OPAQUE|CTLFLAG_RW,
882 0, 0, udp_getcred, "S,ucred", "Get the ucred of a UDP connection");
885 udp_send_redispatch(netmsg_t msg)
887 struct mbuf *m = msg->send.nm_m;
888 int pru_flags = msg->send.nm_flags;
889 struct inpcb *inp = msg->send.base.nm_so->so_pcb;
890 struct mbuf *m_opt = msg->send.nm_control; /* XXX save ipopt */
891 int flags = msg->send.nm_priv; /* ip_output flags */
894 logudp(redisp_ipout_beg, inp);
897 * - Don't use inp route cache. It should only be used in the
899 * - Access to inp_moptions should be safe, since multicast UDP
900 * datagrams are redispatched to netisr0 and inp_moptions is
901 * changed only in netisr0.
903 error = ip_output(m, m_opt, NULL, flags, inp->inp_moptions, inp);
904 if ((pru_flags & PRUS_NOREPLY) == 0)
905 lwkt_replymsg(&msg->send.base.lmsg, error);
908 /* Free saved ip options, if any */
912 logudp(redisp_ipout_end, inp);
916 udp_send(netmsg_t msg)
918 struct socket *so = msg->send.base.nm_so;
919 struct mbuf *m = msg->send.nm_m;
920 struct sockaddr *dstaddr = msg->send.nm_addr;
921 int pru_flags = msg->send.nm_flags;
922 struct inpcb *inp = so->so_pcb;
923 struct thread *td = msg->send.nm_td;
927 int len = m->m_pkthdr.len;
928 struct sockaddr_in *sin; /* really is initialized before use */
931 KKASSERT(msg->send.nm_control == NULL);
933 logudp(send_beg, inp);
940 if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) {
945 if (inp->inp_lport == 0) { /* unbound socket */
948 error = in_pcbbind(inp, NULL, td);
953 * Need to call udp_send again, after this inpcb is
954 * inserted into wildcard hash table.
956 msg->send.base.lmsg.ms_flags |= MSGF_UDP_SEND;
957 forwarded = udp_inswildcardhash(inp, &msg->send.base, 0);
960 * The message is further forwarded, so we are
963 logudp(send_inswildcard, inp);
968 if (dstaddr != NULL) { /* destination address specified */
969 if (inp->inp_faddr.s_addr != INADDR_ANY) {
970 /* already connected */
974 sin = (struct sockaddr_in *)dstaddr;
975 if (!prison_remote_ip(td, (struct sockaddr *)&sin)) {
976 error = EAFNOSUPPORT; /* IPv6 only jail */
980 if (inp->inp_faddr.s_addr == INADDR_ANY) {
981 /* no destination specified and not already connected */
989 * Calculate data length and get a mbuf
990 * for UDP and IP headers.
992 M_PREPEND(m, sizeof(struct udpiphdr), M_NOWAIT);
999 * Fill in mbuf with extended UDP header
1000 * and addresses and length put into network format.
1002 ui = mtod(m, struct udpiphdr *);
1003 bzero(ui->ui_x1, sizeof ui->ui_x1); /* XXX still needed? */
1004 ui->ui_pr = IPPROTO_UDP;
1007 * Set destination address.
1009 if (dstaddr != NULL) { /* use specified destination */
1010 ui->ui_dst = sin->sin_addr;
1011 ui->ui_dport = sin->sin_port;
1012 } else { /* use connected destination */
1013 ui->ui_dst = inp->inp_faddr;
1014 ui->ui_dport = inp->inp_fport;
1018 * Set source address.
1020 if (inp->inp_laddr.s_addr == INADDR_ANY ||
1021 IN_MULTICAST(ntohl(inp->inp_laddr.s_addr))) {
1022 struct sockaddr_in *if_sin;
1024 if (dstaddr == NULL) {
1026 * connect() had (or should have) failed because
1027 * the interface had no IP address, but the
1028 * application proceeded to call send() anyways.
1034 /* Look up outgoing interface. */
1035 error = in_pcbladdr_find(inp, dstaddr, &if_sin, td, 1);
1038 ui->ui_src = if_sin->sin_addr; /* use address of interface */
1040 ui->ui_src = inp->inp_laddr; /* use non-null bound address */
1042 ui->ui_sport = inp->inp_lport;
1043 KASSERT(inp->inp_lport != 0, ("inp lport should have been bound"));
1046 * Release the original thread, since it is no longer used
1048 if (pru_flags & PRUS_HELDTD) {
1050 pru_flags &= ~PRUS_HELDTD;
1053 * Free the dest address, since it is no longer needed
1055 if (pru_flags & PRUS_FREEADDR) {
1056 kfree(dstaddr, M_SONAME);
1057 pru_flags &= ~PRUS_FREEADDR;
1060 ui->ui_ulen = htons((u_short)len + sizeof(struct udphdr));
1063 * Set up checksum and output datagram.
1066 ui->ui_sum = in_pseudo(ui->ui_src.s_addr, ui->ui_dst.s_addr,
1067 htons((u_short)len + sizeof(struct udphdr) + IPPROTO_UDP));
1068 m->m_pkthdr.csum_flags = CSUM_UDP;
1069 m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
1070 m->m_pkthdr.csum_thlen = sizeof(struct udphdr);
1074 ((struct ip *)ui)->ip_len = sizeof(struct udpiphdr) + len;
1075 ((struct ip *)ui)->ip_ttl = inp->inp_ip_ttl; /* XXX */
1076 ((struct ip *)ui)->ip_tos = inp->inp_ip_tos; /* XXX */
1077 udp_stat.udps_opackets++;
1079 flags = IP_DEBUGROUTE |
1080 (inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST));
1081 if (pru_flags & PRUS_DONTROUTE)
1082 flags |= SO_DONTROUTE;
1084 if (inp->inp_flags & INP_CONNECTED) {
1086 * For connected socket, this datagram has already
1087 * been in the correct netisr; no need to rehash.
1092 cpu = udp_addrcpu(ui->ui_dst.s_addr, ui->ui_dport,
1093 ui->ui_src.s_addr, ui->ui_sport);
1094 if (cpu != mycpuid) {
1095 struct mbuf *m_opt = NULL;
1096 struct netmsg_pru_send *smsg;
1097 struct lwkt_port *port = netisr_cpuport(cpu);
1100 * Not on the CPU that matches this UDP datagram hash;
1101 * redispatch to the correct CPU to do the ip_output().
1103 if (inp->inp_options != NULL) {
1105 * If there are ip options, then save a copy,
1106 * since accessing inp_options on other CPUs'
1109 * XXX optimize this?
1111 m_opt = m_copym(inp->inp_options, 0, M_COPYALL,
1114 if ((pru_flags & PRUS_NOREPLY) == 0) {
1116 * Change some parts of the original netmsg and
1117 * forward it to the target netisr.
1119 * NOTE: so_port MUST NOT be checked in the target
1123 smsg->nm_priv = flags; /* ip_output flags */
1125 smsg->nm_control = m_opt; /* XXX save ipopt */
1126 smsg->base.lmsg.ms_flags |= MSGF_IGNSOPORT;
1127 smsg->base.nm_dispatch = udp_send_redispatch;
1128 lwkt_forwardmsg(port, &smsg->base.lmsg);
1131 * Recreate the netmsg, since the original mbuf
1132 * could have been changed. And send it to the
1135 * NOTE: so_port MUST NOT be checked in the target
1138 smsg = &m->m_hdr.mh_sndmsg;
1139 netmsg_init(&smsg->base, so, &netisr_apanic_rport,
1140 MSGF_IGNSOPORT, udp_send_redispatch);
1141 smsg->nm_priv = flags; /* ip_output flags */
1142 smsg->nm_flags = pru_flags;
1144 smsg->nm_control = m_opt; /* XXX save ipopt */
1145 lwkt_sendmsg(port, &smsg->base.lmsg);
1148 /* This UDP datagram is redispatched; done */
1149 logudp(send_redisp, inp);
1154 logudp(send_ipout, inp);
1155 error = ip_output(m, inp->inp_options, &inp->inp_route, flags,
1156 inp->inp_moptions, inp);
1163 if (pru_flags & PRUS_HELDTD)
1165 if (pru_flags & PRUS_FREEADDR)
1166 kfree(dstaddr, M_SONAME);
1167 if ((pru_flags & PRUS_NOREPLY) == 0)
1168 lwkt_replymsg(&msg->send.base.lmsg, error);
1170 logudp(send_end, inp);
1173 u_long udp_sendspace = 9216; /* really max datagram size */
1174 /* 40 1K datagrams */
1175 SYSCTL_INT(_net_inet_udp, UDPCTL_MAXDGRAM, maxdgram, CTLFLAG_RW,
1176 &udp_sendspace, 0, "Maximum outgoing UDP datagram size");
1178 u_long udp_recvspace = 40 * (1024 +
1180 sizeof(struct sockaddr_in6)
1182 sizeof(struct sockaddr_in)
1185 SYSCTL_INT(_net_inet_udp, UDPCTL_RECVSPACE, recvspace, CTLFLAG_RW,
1186 &udp_recvspace, 0, "Maximum incoming UDP datagram size");
1189 * This should never happen, since UDP socket does not support
1190 * connection acception (SO_ACCEPTCONN, i.e. listen(2)).
1193 udp_abort(netmsg_t msg __unused)
1195 panic("udp_abort is called");
1199 udp_attach(netmsg_t msg)
1201 struct socket *so = msg->attach.base.nm_so;
1202 struct pru_attach_info *ai = msg->attach.nm_ai;
1211 error = soreserve(so, udp_sendspace, udp_recvspace, ai->sb_rlimit);
1215 error = in_pcballoc(so, &udbinfo[mycpuid]);
1219 inp = (struct inpcb *)so->so_pcb;
1220 inp->inp_flags |= INP_DIRECT_DETACH;
1221 inp->inp_ip_ttl = ip_defttl;
1224 lwkt_replymsg(&msg->attach.base.lmsg, error);
1228 udp_inswildcard_replymsg(netmsg_t msg)
1230 lwkt_msg_t lmsg = &msg->lmsg;
1232 if (lmsg->ms_flags & MSGF_UDP_SEND) {
1234 /* msg is replied by udp_send() */
1236 lwkt_replymsg(lmsg, lmsg->ms_error);
1241 udp_soreuseport_dispatch(netmsg_t msg)
1243 /* This inpcb has already been in the wildcard hash. */
1244 in_pcblink_flags(msg->base.nm_so->so_pcb, &udbinfo[mycpuid], 0);
1245 udp_inswildcard_replymsg(msg);
1249 udp_sosetport(struct lwkt_msg *msg, lwkt_port_t port)
1251 sosetport(((struct netmsg_base *)msg)->nm_so, port);
1255 udp_inswildcardhash_oncpu(struct inpcb *inp, struct netmsg_base *msg)
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 if (inp->inp_socket->so_options & SO_REUSEPORT) {
1276 * For SO_REUSEPORT socket, redistribute it based on its
1277 * local group index.
1279 cpu = inp->inp_lgrpindex & ncpus2_mask;
1280 if (cpu != mycpuid) {
1281 struct lwkt_port *port = netisr_cpuport(cpu);
1282 lwkt_msg_t lmsg = &msg->lmsg;
1285 * We are moving the protocol processing port the
1286 * socket is on, we have to unlink here and re-link
1287 * on the target cpu (this inpcb is still left in
1288 * the wildcard hash).
1290 in_pcbunlink_flags(inp, &udbinfo[mycpuid], 0);
1291 msg->nm_dispatch = udp_soreuseport_dispatch;
1294 * See the related comment in tcp_usrreq.c
1297 lwkt_setmsg_receipt(lmsg, udp_sosetport);
1298 lwkt_forwardmsg(port, lmsg);
1299 return TRUE; /* forwarded */
1306 udp_inswildcardhash_dispatch(netmsg_t msg)
1308 struct inpcb *inp = msg->base.nm_so->so_pcb;
1309 boolean_t forwarded;
1311 KASSERT(inp->inp_lport != 0, ("local port not set yet"));
1312 KASSERT((ntohs(inp->inp_lport) & ncpus2_mask) == mycpuid,
1313 ("not target cpu"));
1315 in_pcblink(inp, &udbinfo[mycpuid]);
1317 forwarded = udp_inswildcardhash_oncpu(inp, &msg->base);
1319 /* The message is further forwarded, so we are done here. */
1322 udp_inswildcard_replymsg(msg);
1326 udp_inswildcardhash(struct inpcb *inp, struct netmsg_base *msg, int error)
1328 lwkt_msg_t lmsg = &msg->lmsg;
1331 ASSERT_INP_NOTINHASH(inp);
1333 /* This inpcb could no longer be directly detached */
1334 inp->inp_flags &= ~INP_DIRECT_DETACH;
1337 * Always clear the route cache, so we don't need to
1338 * worry about any owner CPU changes later.
1340 in_pcbresetroute(inp);
1342 KASSERT(inp->inp_lport != 0, ("local port not set yet"));
1343 cpu = ntohs(inp->inp_lport) & ncpus2_mask;
1345 lmsg->ms_error = error;
1346 if (cpu != mycpuid) {
1347 struct lwkt_port *port = netisr_cpuport(cpu);
1350 * We are moving the protocol processing port the socket
1351 * is on, we have to unlink here and re-link on the
1354 in_pcbunlink(inp, &udbinfo[mycpuid]);
1355 msg->nm_dispatch = udp_inswildcardhash_dispatch;
1357 /* See the related comment in tcp_usrreq.c tcp_connect() */
1358 lwkt_setmsg_receipt(lmsg, udp_sosetport);
1359 lwkt_forwardmsg(port, lmsg);
1360 return TRUE; /* forwarded */
1363 return udp_inswildcardhash_oncpu(inp, msg);
1367 udp_bind(netmsg_t msg)
1369 struct socket *so = msg->bind.base.nm_so;
1375 struct sockaddr *nam = msg->bind.nm_nam;
1376 struct thread *td = msg->bind.nm_td;
1378 error = in_pcbbind(inp, nam, td);
1380 struct sockaddr_in *sin = (struct sockaddr_in *)nam;
1381 boolean_t forwarded;
1383 if (sin->sin_addr.s_addr != INADDR_ANY)
1384 inp->inp_flags |= INP_WASBOUND_NOTANY;
1386 forwarded = udp_inswildcardhash(inp,
1387 &msg->bind.base, 0);
1390 * The message is further forwarded, so
1399 lwkt_replymsg(&msg->bind.base.lmsg, error);
1403 udp_connect(netmsg_t msg)
1405 struct socket *so = msg->connect.base.nm_so;
1406 struct sockaddr *nam = msg->connect.nm_nam;
1407 struct thread *td = msg->connect.nm_td;
1409 struct sockaddr_in *sin = (struct sockaddr_in *)nam;
1410 struct sockaddr_in *if_sin;
1411 struct lwkt_port *port;
1414 KKASSERT(msg->connect.nm_m == NULL);
1422 if (msg->connect.nm_flags & PRUC_RECONNECT) {
1423 msg->connect.nm_flags &= ~PRUC_RECONNECT;
1424 in_pcblink(inp, &udbinfo[mycpuid]);
1427 if (inp->inp_faddr.s_addr != INADDR_ANY) {
1434 * Bind if we have to
1436 if (inp->inp_lport == 0) {
1437 error = in_pcbbind(inp, NULL, td);
1443 * Calculate the correct protocol processing thread. The connect
1444 * operation must run there.
1446 error = in_pcbladdr(inp, nam, &if_sin, td);
1449 if (!prison_remote_ip(td, nam)) {
1450 error = EAFNOSUPPORT; /* IPv6 only jail */
1454 port = udp_addrport(sin->sin_addr.s_addr, sin->sin_port,
1455 inp->inp_laddr.s_addr != INADDR_ANY ?
1456 inp->inp_laddr.s_addr : if_sin->sin_addr.s_addr, inp->inp_lport);
1457 if (port != &curthread->td_msgport) {
1458 lwkt_msg_t lmsg = &msg->connect.base.lmsg;
1459 int nm_flags = PRUC_RECONNECT;
1462 * in_pcbladdr() may have allocated a route entry for us
1463 * on the current CPU, but we need a route entry on the
1464 * inpcb's owner CPU, so free it here.
1466 in_pcbresetroute(inp);
1468 if (inp->inp_flags & INP_WILDCARD) {
1470 * Remove this inpcb from the wildcard hash before
1471 * the socket's msgport changes.
1473 udp_remwildcardhash(inp);
1477 * We are moving the protocol processing port the socket
1478 * is on, we have to unlink here and re-link on the
1481 in_pcbunlink(inp, &udbinfo[mycpuid]);
1482 msg->connect.nm_flags |= nm_flags;
1484 /* See the related comment in tcp_usrreq.c tcp_connect() */
1485 lwkt_setmsg_receipt(lmsg, udp_sosetport);
1486 lwkt_forwardmsg(port, lmsg);
1487 /* msg invalid now */
1490 error = udp_connect_oncpu(inp, sin, if_sin);
1492 if (error && inp != NULL && inp->inp_lport != 0 &&
1493 (inp->inp_flags & INP_WILDCARD) == 0) {
1494 boolean_t forwarded;
1496 /* Connect failed; put it to wildcard hash. */
1497 forwarded = udp_inswildcardhash(inp, &msg->connect.base,
1501 * The message is further forwarded, so we are done
1507 lwkt_replymsg(&msg->connect.base.lmsg, error);
1511 udp_remwildcardhash(struct inpcb *inp)
1515 KASSERT(inp->inp_pcbinfo == &udbinfo[mycpuid],
1516 ("not on owner cpu"));
1518 for (cpu = 0; cpu < ncpus2; ++cpu) {
1519 if (cpu == mycpuid) {
1521 * This inpcb will be removed by the later
1522 * in_pcbremwildcardhash().
1526 in_pcbremwildcardhash_oncpu(inp, &udbinfo[cpu]);
1528 in_pcbremwildcardhash(inp);
1532 udp_connect_oncpu(struct inpcb *inp, struct sockaddr_in *sin,
1533 struct sockaddr_in *if_sin)
1535 struct socket *so = inp->inp_socket;
1538 oinp = in_pcblookup_hash(inp->inp_pcbinfo,
1539 sin->sin_addr, sin->sin_port,
1540 inp->inp_laddr.s_addr != INADDR_ANY ?
1541 inp->inp_laddr : if_sin->sin_addr, inp->inp_lport, FALSE, NULL);
1546 * No more errors can occur, finish adjusting the socket
1547 * and change the processing port to reflect the connected
1548 * socket. Once set we can no longer safely mess with the
1552 if (inp->inp_flags & INP_WILDCARD)
1553 udp_remwildcardhash(inp);
1555 if (inp->inp_laddr.s_addr == INADDR_ANY)
1556 inp->inp_laddr = if_sin->sin_addr;
1557 inp->inp_faddr = sin->sin_addr;
1558 inp->inp_fport = sin->sin_port;
1559 in_pcbinsconnhash(inp);
1567 udp_detach2(struct socket *so)
1569 in_pcbdetach(so->so_pcb);
1575 udp_detach_final_dispatch(netmsg_t msg)
1577 udp_detach2(msg->base.nm_so);
1581 udp_detach_oncpu_dispatch(netmsg_t msg)
1583 struct netmsg_base *clomsg = &msg->base;
1584 struct socket *so = clomsg->nm_so;
1585 struct inpcb *inp = so->so_pcb;
1586 struct thread *td = curthread;
1587 int nextcpu, cpuid = mycpuid;
1589 KASSERT(td->td_type == TD_TYPE_NETISR, ("not in netisr"));
1591 if (inp->inp_flags & INP_WILDCARD) {
1593 * This inp will be removed on the inp's
1594 * owner CPU later, so don't do it now.
1596 if (&td->td_msgport != so->so_port)
1597 in_pcbremwildcardhash_oncpu(inp, &udbinfo[cpuid]);
1602 * Free and clear multicast socket option,
1603 * which is only accessed in netisr0.
1605 ip_freemoptions(inp->inp_moptions);
1606 inp->inp_moptions = NULL;
1609 nextcpu = cpuid + 1;
1610 if (nextcpu < ncpus2) {
1611 lwkt_forwardmsg(netisr_cpuport(nextcpu), &clomsg->lmsg);
1614 * No one could see this inpcb now; destroy this
1615 * inpcb in its owner netisr.
1617 netmsg_init(clomsg, so, &netisr_apanic_rport, 0,
1618 udp_detach_final_dispatch);
1619 lwkt_sendmsg(so->so_port, &clomsg->lmsg);
1624 udp_detach(netmsg_t msg)
1626 struct socket *so = msg->detach.base.nm_so;
1627 struct netmsg_base *clomsg;
1632 lwkt_replymsg(&msg->detach.base.lmsg, EINVAL);
1637 * Reply EJUSTRETURN ASAP, we will call sodiscard() and
1640 lwkt_replymsg(&msg->detach.base.lmsg, EJUSTRETURN);
1643 /* Only one CPU, detach the inpcb directly. */
1649 * Remove this inpcb from the inpcb list first, so that
1650 * no one could find this inpcb from the inpcb list.
1654 if (inp->inp_flags & INP_DIRECT_DETACH) {
1656 * Direct detaching is allowed
1658 KASSERT((inp->inp_flags & INP_WILDCARD) == 0,
1659 ("in the wildcardhash"));
1660 KASSERT(inp->inp_moptions == NULL, ("has mcast options"));
1666 * Go through netisrs which process UDP to make sure
1667 * no one could find this inpcb anymore.
1669 clomsg = &so->so_clomsg;
1670 netmsg_init(clomsg, so, &netisr_apanic_rport, MSGF_IGNSOPORT,
1671 udp_detach_oncpu_dispatch);
1672 lwkt_sendmsg(netisr_cpuport(0), &clomsg->lmsg);
1676 udp_disconnect(netmsg_t msg)
1678 struct socket *so = msg->disconnect.base.nm_so;
1680 boolean_t forwarded;
1688 if (inp->inp_faddr.s_addr == INADDR_ANY) {
1693 soclrstate(so, SS_ISCONNECTED); /* XXX */
1695 in_pcbdisconnect(inp);
1698 * Follow traditional BSD behavior and retain the local port
1699 * binding. But, fix the old misbehavior of overwriting any
1700 * previously bound local address.
1702 if (!(inp->inp_flags & INP_WASBOUND_NOTANY))
1703 inp->inp_laddr.s_addr = INADDR_ANY;
1705 if (so->so_state & SS_ISCLOSING) {
1707 * If this socket is being closed, there is no need
1708 * to put this socket back into wildcard hash table.
1714 forwarded = udp_inswildcardhash(inp, &msg->disconnect.base, 0);
1717 * The message is further forwarded, so we are done
1723 lwkt_replymsg(&msg->disconnect.base.lmsg, error);
1727 udp_shutdown(netmsg_t msg)
1729 struct socket *so = msg->shutdown.base.nm_so;
1740 lwkt_replymsg(&msg->shutdown.base.lmsg, error);
1743 struct pr_usrreqs udp_usrreqs = {
1744 .pru_abort = udp_abort,
1745 .pru_accept = pr_generic_notsupp,
1746 .pru_attach = udp_attach,
1747 .pru_bind = udp_bind,
1748 .pru_connect = udp_connect,
1749 .pru_connect2 = pr_generic_notsupp,
1750 .pru_control = in_control_dispatch,
1751 .pru_detach = udp_detach,
1752 .pru_disconnect = udp_disconnect,
1753 .pru_listen = pr_generic_notsupp,
1754 .pru_peeraddr = in_setpeeraddr_dispatch,
1755 .pru_rcvd = pr_generic_notsupp,
1756 .pru_rcvoob = pr_generic_notsupp,
1757 .pru_send = udp_send,
1758 .pru_sense = pru_sense_null,
1759 .pru_shutdown = udp_shutdown,
1760 .pru_sockaddr = in_setsockaddr_dispatch,
1761 .pru_sosend = sosendudp,
1762 .pru_soreceive = soreceive