Annotation of src/sys/netinet/udp_usrreq.c, Revision 1.41
1.41 ! thorpej 1: /* $NetBSD: udp_usrreq.c,v 1.40 1997/01/11 05:21:14 thorpej Exp $ */
1.14 cgd 2:
1.1 cgd 3: /*
1.13 mycroft 4: * Copyright (c) 1982, 1986, 1988, 1990, 1993
5: * The Regents of the University of California. All rights reserved.
1.1 cgd 6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by the University of
18: * California, Berkeley and its contributors.
19: * 4. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: *
1.14 cgd 35: * @(#)udp_usrreq.c 8.4 (Berkeley) 1/21/94
1.1 cgd 36: */
1.38 ws 37: #include "ipkdb.h"
1.1 cgd 38:
1.5 mycroft 39: #include <sys/param.h>
40: #include <sys/malloc.h>
41: #include <sys/mbuf.h>
42: #include <sys/protosw.h>
43: #include <sys/socket.h>
44: #include <sys/socketvar.h>
1.13 mycroft 45: #include <sys/errno.h>
1.5 mycroft 46: #include <sys/stat.h>
1.27 christos 47: #include <sys/systm.h>
48: #include <sys/proc.h>
49:
50: #include <vm/vm.h>
51: #include <sys/sysctl.h>
1.1 cgd 52:
1.5 mycroft 53: #include <net/if.h>
54: #include <net/route.h>
1.1 cgd 55:
1.5 mycroft 56: #include <netinet/in.h>
57: #include <netinet/in_systm.h>
1.15 cgd 58: #include <netinet/in_var.h>
1.5 mycroft 59: #include <netinet/ip.h>
60: #include <netinet/in_pcb.h>
61: #include <netinet/ip_var.h>
62: #include <netinet/ip_icmp.h>
63: #include <netinet/udp.h>
64: #include <netinet/udp_var.h>
1.1 cgd 65:
1.27 christos 66: #include <machine/stdarg.h>
67:
1.8 mycroft 68: /*
69: * UDP protocol implementation.
70: * Per RFC 768, August, 1980.
71: */
72: #ifndef COMPAT_42
73: int udpcksum = 1;
74: #else
75: int udpcksum = 0; /* XXX */
76: #endif
77:
1.13 mycroft 78: static void udp_notify __P((struct inpcb *, int));
1.7 mycroft 79:
1.26 mycroft 80: #ifndef UDBHASHSIZE
81: #define UDBHASHSIZE 128
82: #endif
83: int udbhashsize = UDBHASHSIZE;
84:
1.7 mycroft 85: void
1.1 cgd 86: udp_init()
87: {
1.18 mycroft 88:
1.35 mycroft 89: in_pcbinit(&udbtable, udbhashsize, udbhashsize);
1.1 cgd 90: }
91:
1.7 mycroft 92: void
1.27 christos 93: #if __STDC__
94: udp_input(struct mbuf *m, ...)
95: #else
96: udp_input(m, va_alist)
97: struct mbuf *m;
98: va_dcl
99: #endif
1.1 cgd 100: {
101: register struct ip *ip;
102: register struct udphdr *uh;
103: register struct inpcb *inp;
104: struct mbuf *opts = 0;
105: int len;
106: struct ip save_ip;
1.27 christos 107: int iphlen;
108: va_list ap;
1.34 mycroft 109: struct sockaddr_in udpsrc;
1.27 christos 110:
111: va_start(ap, m);
112: iphlen = va_arg(ap, int);
113: va_end(ap);
1.1 cgd 114:
115: udpstat.udps_ipackets++;
116:
117: /*
118: * Strip IP options, if any; should skip this,
119: * make available to user, and use on returned packets,
120: * but we don't yet have a way to check the checksum
121: * with options still present.
122: */
123: if (iphlen > sizeof (struct ip)) {
124: ip_stripoptions(m, (struct mbuf *)0);
125: iphlen = sizeof(struct ip);
126: }
127:
128: /*
129: * Get IP and UDP header together in first mbuf.
130: */
131: ip = mtod(m, struct ip *);
132: if (m->m_len < iphlen + sizeof(struct udphdr)) {
133: if ((m = m_pullup(m, iphlen + sizeof(struct udphdr))) == 0) {
134: udpstat.udps_hdrops++;
135: return;
136: }
137: ip = mtod(m, struct ip *);
138: }
139: uh = (struct udphdr *)((caddr_t)ip + iphlen);
140:
141: /*
142: * Make mbuf data length reflect UDP length.
143: * If not enough data to reflect UDP length, drop.
144: */
1.15 cgd 145: len = ntohs((u_int16_t)uh->uh_ulen);
1.1 cgd 146: if (ip->ip_len != len) {
147: if (len > ip->ip_len) {
148: udpstat.udps_badlen++;
149: goto bad;
150: }
151: m_adj(m, len - ip->ip_len);
152: /* ip->ip_len = len; */
153: }
154: /*
155: * Save a copy of the IP header in case we want restore it
156: * for sending an ICMP error message in response.
157: */
158: save_ip = *ip;
159:
160: /*
161: * Checksum extended UDP header and data.
162: */
1.29 mrg 163: if (uh->uh_sum) {
1.25 cgd 164: bzero(((struct ipovly *)ip)->ih_x1,
165: sizeof ((struct ipovly *)ip)->ih_x1);
1.1 cgd 166: ((struct ipovly *)ip)->ih_len = uh->uh_ulen;
1.27 christos 167: if ((uh->uh_sum = in_cksum(m, len + sizeof (struct ip))) != 0) {
1.1 cgd 168: udpstat.udps_badsum++;
169: m_freem(m);
170: return;
171: }
172: }
1.13 mycroft 173:
1.16 mycroft 174: if (IN_MULTICAST(ip->ip_dst.s_addr) ||
1.13 mycroft 175: in_broadcast(ip->ip_dst, m->m_pkthdr.rcvif)) {
1.40 thorpej 176: struct inpcb *last;
1.4 hpeyerl 177: /*
178: * Deliver a multicast or broadcast datagram to *all* sockets
179: * for which the local and remote addresses and ports match
180: * those of the incoming datagram. This allows more than
181: * one process to receive multi/broadcasts on the same port.
182: * (This really ought to be done for unicast datagrams as
183: * well, but that would cause problems with existing
184: * applications that open both address-specific sockets and
185: * a wildcard socket listening to the same port -- they would
186: * end up receiving duplicates of every unicast datagram.
187: * Those applications open the multiple sockets to overcome an
188: * inadequacy of the UDP socket interface, but for backwards
189: * compatibility we avoid the problem here rather than
1.13 mycroft 190: * fixing the interface. Maybe 4.5BSD will remedy this?)
1.4 hpeyerl 191: */
1.13 mycroft 192:
1.4 hpeyerl 193: /*
194: * Construct sockaddr format source address.
195: */
1.34 mycroft 196: udpsrc.sin_family = AF_INET;
197: udpsrc.sin_len = sizeof(struct sockaddr_in);
1.36 mycroft 198: udpsrc.sin_addr = ip->ip_src;
1.34 mycroft 199: udpsrc.sin_port = uh->uh_sport;
1.36 mycroft 200: bzero((caddr_t)udpsrc.sin_zero, sizeof(udpsrc.sin_zero));
1.34 mycroft 201:
1.4 hpeyerl 202: m->m_len -= sizeof (struct udpiphdr);
203: m->m_data += sizeof (struct udpiphdr);
204: /*
205: * Locate pcb(s) for datagram.
206: * (Algorithm copied from raw_intr().)
207: */
208: last = NULL;
1.22 cgd 209: for (inp = udbtable.inpt_queue.cqh_first;
210: inp != (struct inpcb *)&udbtable.inpt_queue;
211: inp = inp->inp_queue.cqe_next) {
1.4 hpeyerl 212: if (inp->inp_lport != uh->uh_dport)
213: continue;
1.34 mycroft 214: if (!in_nullhost(inp->inp_laddr)) {
215: if (!in_hosteq(inp->inp_laddr, ip->ip_dst))
1.4 hpeyerl 216: continue;
217: }
1.34 mycroft 218: if (!in_nullhost(inp->inp_faddr)) {
219: if (!in_hosteq(inp->inp_faddr, ip->ip_src) ||
1.4 hpeyerl 220: inp->inp_fport != uh->uh_sport)
221: continue;
222: }
223:
224: if (last != NULL) {
225: struct mbuf *n;
226:
227: if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
1.40 thorpej 228: if (last->inp_flags & INP_CONTROLOPTS
229: || last->inp_socket->so_options &
230: SO_TIMESTAMP) {
231: ip_savecontrol(last, &opts,
232: ip, n);
233: }
234: if (sbappendaddr(
235: &last->inp_socket->so_rcv,
236: sintosa(&udpsrc), n, opts) == 0) {
1.4 hpeyerl 237: m_freem(n);
1.40 thorpej 238: if (opts)
239: m_freem(opts);
1.13 mycroft 240: } else
1.40 thorpej 241: sorwakeup(last->inp_socket);
242: opts = 0;
1.4 hpeyerl 243: }
244: }
1.40 thorpej 245: last = inp;
1.4 hpeyerl 246: /*
1.13 mycroft 247: * Don't look for additional matches if this one does
248: * not have either the SO_REUSEPORT or SO_REUSEADDR
249: * socket options set. This heuristic avoids searching
250: * through all pcbs in the common case of a non-shared
251: * port. It * assumes that an application will never
252: * clear these options after setting them.
1.4 hpeyerl 253: */
1.40 thorpej 254: if ((last->inp_socket->so_options &
255: (SO_REUSEPORT|SO_REUSEADDR)) == 0)
1.4 hpeyerl 256: break;
257: }
1.6 mycroft 258:
1.4 hpeyerl 259: if (last == NULL) {
260: /*
261: * No matching pcb found; discard datagram.
262: * (No need to send an ICMP Port Unreachable
263: * for a broadcast or multicast datgram.)
264: */
1.13 mycroft 265: udpstat.udps_noportbcast++;
1.4 hpeyerl 266: goto bad;
267: }
1.40 thorpej 268: if (last->inp_flags & INP_CONTROLOPTS ||
269: last->inp_socket->so_options & SO_TIMESTAMP)
270: ip_savecontrol(last, &opts, ip, m);
271: if (sbappendaddr(&last->inp_socket->so_rcv,
272: sintosa(&udpsrc), m, opts) == 0) {
1.13 mycroft 273: udpstat.udps_fullsock++;
1.4 hpeyerl 274: goto bad;
1.13 mycroft 275: }
1.40 thorpej 276: sorwakeup(last->inp_socket);
1.4 hpeyerl 277: return;
278: }
1.1 cgd 279: /*
280: * Locate pcb for datagram.
281: */
1.35 mycroft 282: inp = in_pcblookup_connect(&udbtable, ip->ip_src, uh->uh_sport,
1.26 mycroft 283: ip->ip_dst, uh->uh_dport);
284: if (inp == 0) {
285: ++udpstat.udps_pcbhashmiss;
1.35 mycroft 286: inp = in_pcblookup_bind(&udbtable, ip->ip_dst, uh->uh_dport);
1.18 mycroft 287: if (inp == 0) {
288: udpstat.udps_noport++;
289: if (m->m_flags & (M_BCAST | M_MCAST)) {
290: udpstat.udps_noportbcast++;
291: goto bad;
292: }
293: *ip = save_ip;
1.38 ws 294: #if NIPKDB > 0
295: if (checkipkdb(&ip->ip_src,
296: uh->uh_sport,
297: uh->uh_dport,
298: m,
299: iphlen + sizeof(struct udphdr),
300: len - sizeof(struct udphdr)))
1.37 ws 301: /* It was a debugger connect packet, just drop it now */
302: goto bad;
303: #endif
1.18 mycroft 304: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
305: return;
1.13 mycroft 306: }
1.1 cgd 307: }
308:
309: /*
310: * Construct sockaddr format source address.
311: * Stuff source address and datagram in user buffer.
312: */
1.34 mycroft 313: udpsrc.sin_family = AF_INET;
314: udpsrc.sin_len = sizeof(struct sockaddr_in);
1.36 mycroft 315: udpsrc.sin_addr = ip->ip_src;
1.34 mycroft 316: udpsrc.sin_port = uh->uh_sport;
1.36 mycroft 317: bzero((caddr_t)udpsrc.sin_zero, sizeof(udpsrc.sin_zero));
1.34 mycroft 318:
1.40 thorpej 319: if (inp->inp_flags & INP_CONTROLOPTS ||
320: inp->inp_socket->so_options & SO_TIMESTAMP)
321: ip_savecontrol(inp, &opts, ip, m);
1.1 cgd 322: iphlen += sizeof(struct udphdr);
323: m->m_len -= iphlen;
324: m->m_pkthdr.len -= iphlen;
325: m->m_data += iphlen;
1.34 mycroft 326: if (sbappendaddr(&inp->inp_socket->so_rcv, sintosa(&udpsrc), m,
1.17 mycroft 327: opts) == 0) {
1.1 cgd 328: udpstat.udps_fullsock++;
329: goto bad;
330: }
331: sorwakeup(inp->inp_socket);
332: return;
333: bad:
334: m_freem(m);
335: if (opts)
336: m_freem(opts);
337: }
338:
339: /*
340: * Notify a udp user of an asynchronous error;
341: * just wake up so that he can collect error status.
342: */
1.7 mycroft 343: static void
1.1 cgd 344: udp_notify(inp, errno)
345: register struct inpcb *inp;
1.7 mycroft 346: int errno;
1.1 cgd 347: {
1.34 mycroft 348:
1.1 cgd 349: inp->inp_socket->so_error = errno;
350: sorwakeup(inp->inp_socket);
351: sowwakeup(inp->inp_socket);
352: }
353:
1.27 christos 354: void *
355: udp_ctlinput(cmd, sa, v)
1.1 cgd 356: int cmd;
357: struct sockaddr *sa;
1.27 christos 358: void *v;
1.1 cgd 359: {
1.27 christos 360: register struct ip *ip = v;
1.1 cgd 361: register struct udphdr *uh;
1.21 mycroft 362: extern int inetctlerrmap[];
1.18 mycroft 363: void (*notify) __P((struct inpcb *, int)) = udp_notify;
1.21 mycroft 364: int errno;
1.1 cgd 365:
1.20 mycroft 366: if ((unsigned)cmd >= PRC_NCMDS)
1.27 christos 367: return NULL;
1.20 mycroft 368: errno = inetctlerrmap[cmd];
1.18 mycroft 369: if (PRC_IS_REDIRECT(cmd))
1.19 mycroft 370: notify = in_rtchange, ip = 0;
1.18 mycroft 371: else if (cmd == PRC_HOSTDEAD)
1.19 mycroft 372: ip = 0;
1.23 cgd 373: else if (errno == 0)
1.27 christos 374: return NULL;
1.19 mycroft 375: if (ip) {
1.1 cgd 376: uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
1.34 mycroft 377: in_pcbnotify(&udbtable, satosin(sa)->sin_addr, uh->uh_dport,
378: ip->ip_src, uh->uh_sport, errno, notify);
1.19 mycroft 379: } else
1.34 mycroft 380: in_pcbnotifyall(&udbtable, satosin(sa)->sin_addr, errno,
381: notify);
1.27 christos 382: return NULL;
1.1 cgd 383: }
384:
1.7 mycroft 385: int
1.27 christos 386: #if __STDC__
387: udp_output(struct mbuf *m, ...)
388: #else
389: udp_output(m, va_alist)
390: struct mbuf *m;
391: va_dcl
392: #endif
393: {
1.1 cgd 394: register struct inpcb *inp;
395: register struct udpiphdr *ui;
396: register int len = m->m_pkthdr.len;
1.31 mycroft 397: int error = 0;
1.27 christos 398: va_list ap;
399:
400: va_start(ap, m);
401: inp = va_arg(ap, struct inpcb *);
402: va_end(ap);
1.1 cgd 403:
404: /*
405: * Calculate data length and get a mbuf
406: * for UDP and IP headers.
407: */
1.13 mycroft 408: M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
409: if (m == 0) {
410: error = ENOBUFS;
1.39 thorpej 411: goto release;
412: }
413:
414: /*
415: * Compute the packet length of the IP header, and
416: * punt if the length looks bogus.
417: */
418: if ((len + sizeof(struct udpiphdr)) > IP_MAXPACKET) {
419: error = EMSGSIZE;
1.13 mycroft 420: goto release;
421: }
1.1 cgd 422:
423: /*
424: * Fill in mbuf with extended UDP header
425: * and addresses and length put into network format.
426: */
427: ui = mtod(m, struct udpiphdr *);
1.25 cgd 428: bzero(ui->ui_x1, sizeof ui->ui_x1);
1.1 cgd 429: ui->ui_pr = IPPROTO_UDP;
1.15 cgd 430: ui->ui_len = htons((u_int16_t)len + sizeof (struct udphdr));
1.1 cgd 431: ui->ui_src = inp->inp_laddr;
432: ui->ui_dst = inp->inp_faddr;
433: ui->ui_sport = inp->inp_lport;
434: ui->ui_dport = inp->inp_fport;
435: ui->ui_ulen = ui->ui_len;
436:
437: /*
438: * Stuff checksum and output datagram.
439: */
440: ui->ui_sum = 0;
441: if (udpcksum) {
442: if ((ui->ui_sum = in_cksum(m, sizeof (struct udpiphdr) + len)) == 0)
443: ui->ui_sum = 0xffff;
444: }
445: ((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len;
446: ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */
447: ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */
448: udpstat.udps_opackets++;
1.31 mycroft 449: return (ip_output(m, inp->inp_options, &inp->inp_route,
1.12 mycroft 450: inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST),
1.31 mycroft 451: inp->inp_moptions));
1.1 cgd 452:
453: release:
454: m_freem(m);
455: return (error);
456: }
457:
458: u_long udp_sendspace = 9216; /* really max datagram size */
459: u_long udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
460: /* 40 1K datagrams */
461:
462: /*ARGSUSED*/
1.7 mycroft 463: int
1.31 mycroft 464: udp_usrreq(so, req, m, nam, control, p)
1.1 cgd 465: struct socket *so;
466: int req;
1.31 mycroft 467: struct mbuf *m, *nam, *control;
1.30 mycroft 468: struct proc *p;
1.1 cgd 469: {
1.31 mycroft 470: register struct inpcb *inp;
1.1 cgd 471: int s;
1.31 mycroft 472: register int error = 0;
1.1 cgd 473:
474: if (req == PRU_CONTROL)
1.31 mycroft 475: return (in_control(so, (long)m, (caddr_t)nam,
1.30 mycroft 476: (struct ifnet *)control, p));
1.31 mycroft 477:
478: s = splsoftnet();
479: inp = sotoinpcb(so);
1.32 mycroft 480: #ifdef DIAGNOSTIC
481: if (req != PRU_SEND && req != PRU_SENDOOB && control)
482: panic("udp_usrreq: unexpected control mbuf");
483: #endif
1.31 mycroft 484: if (inp == 0 && req != PRU_ATTACH) {
485: error = EINVAL;
486: goto release;
487: }
488:
1.1 cgd 489: /*
490: * Note: need to block udp_input while changing
491: * the udp pcb queue and/or pcb addresses.
492: */
493: switch (req) {
494:
495: case PRU_ATTACH:
1.31 mycroft 496: if (inp != 0) {
497: error = EISCONN;
1.1 cgd 498: break;
499: }
1.31 mycroft 500: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
501: error = soreserve(so, udp_sendspace, udp_recvspace);
502: if (error)
503: break;
504: }
1.18 mycroft 505: error = in_pcballoc(so, &udbtable);
1.1 cgd 506: if (error)
507: break;
1.31 mycroft 508: inp = sotoinpcb(so);
509: inp->inp_ip.ip_ttl = ip_defttl;
1.1 cgd 510: break;
511:
512: case PRU_DETACH:
1.31 mycroft 513: in_pcbdetach(inp);
1.1 cgd 514: break;
515:
516: case PRU_BIND:
1.31 mycroft 517: error = in_pcbbind(inp, nam, p);
1.1 cgd 518: break;
519:
520: case PRU_LISTEN:
521: error = EOPNOTSUPP;
522: break;
523:
524: case PRU_CONNECT:
1.31 mycroft 525: error = in_pcbconnect(inp, nam);
526: if (error)
1.1 cgd 527: break;
1.31 mycroft 528: soisconnected(so);
1.1 cgd 529: break;
530:
531: case PRU_CONNECT2:
532: error = EOPNOTSUPP;
533: break;
534:
535: case PRU_DISCONNECT:
1.31 mycroft 536: /*soisdisconnected(so);*/
537: so->so_state &= ~SS_ISCONNECTED; /* XXX */
1.1 cgd 538: in_pcbdisconnect(inp);
1.34 mycroft 539: inp->inp_laddr = zeroin_addr; /* XXX */
1.35 mycroft 540: in_pcbstate(inp, INP_BOUND); /* XXX */
1.1 cgd 541: break;
542:
543: case PRU_SHUTDOWN:
544: socantsendmore(so);
545: break;
546:
1.31 mycroft 547: case PRU_RCVD:
548: error = EOPNOTSUPP;
1.1 cgd 549: break;
550:
1.31 mycroft 551: case PRU_SEND:
1.32 mycroft 552: if (control && control->m_len) {
553: m_freem(control);
554: m_freem(m);
555: error = EINVAL;
556: break;
557: }
1.31 mycroft 558: {
1.35 mycroft 559: struct in_addr laddr; /* XXX */
1.1 cgd 560:
1.31 mycroft 561: if (nam) {
1.35 mycroft 562: laddr = inp->inp_laddr; /* XXX */
1.31 mycroft 563: if ((so->so_state & SS_ISCONNECTED) != 0) {
564: error = EISCONN;
1.32 mycroft 565: goto die;
1.31 mycroft 566: }
567: error = in_pcbconnect(inp, nam);
1.32 mycroft 568: if (error) {
569: die:
570: m_freem(m);
1.31 mycroft 571: break;
1.32 mycroft 572: }
1.31 mycroft 573: } else {
574: if ((so->so_state & SS_ISCONNECTED) == 0) {
575: error = ENOTCONN;
1.32 mycroft 576: goto die;
1.31 mycroft 577: }
578: }
1.33 mycroft 579: error = udp_output(m, inp);
1.31 mycroft 580: if (nam) {
581: in_pcbdisconnect(inp);
1.35 mycroft 582: inp->inp_laddr = laddr; /* XXX */
583: in_pcbstate(inp, INP_BOUND); /* XXX */
1.31 mycroft 584: }
585: }
1.1 cgd 586: break;
587:
588: case PRU_SENSE:
589: /*
590: * stat: don't bother with a blocksize.
591: */
1.31 mycroft 592: splx(s);
1.1 cgd 593: return (0);
594:
1.31 mycroft 595: case PRU_RCVOOB:
596: error = EOPNOTSUPP;
597: break;
598:
1.1 cgd 599: case PRU_SENDOOB:
1.32 mycroft 600: m_freem(control);
1.31 mycroft 601: m_freem(m);
1.1 cgd 602: error = EOPNOTSUPP;
603: break;
604:
1.31 mycroft 605: case PRU_SOCKADDR:
606: in_setsockaddr(inp, nam);
607: break;
608:
609: case PRU_PEERADDR:
610: in_setpeeraddr(inp, nam);
611: break;
1.1 cgd 612:
613: default:
614: panic("udp_usrreq");
615: }
616:
617: release:
1.31 mycroft 618: splx(s);
1.1 cgd 619: return (error);
1.13 mycroft 620: }
621:
622: /*
623: * Sysctl for udp variables.
624: */
1.27 christos 625: int
1.13 mycroft 626: udp_sysctl(name, namelen, oldp, oldlenp, newp, newlen)
627: int *name;
628: u_int namelen;
629: void *oldp;
630: size_t *oldlenp;
631: void *newp;
632: size_t newlen;
633: {
634: /* All sysctl names at this level are terminal. */
635: if (namelen != 1)
636: return (ENOTDIR);
637:
638: switch (name[0]) {
639: case UDPCTL_CHECKSUM:
640: return (sysctl_int(oldp, oldlenp, newp, newlen, &udpcksum));
641: default:
642: return (ENOPROTOOPT);
643: }
644: /* NOTREACHED */
1.1 cgd 645: }
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