Annotation of src/sys/netinet/udp_usrreq.c, Revision 1.42.2.1
1.42.2.1! thorpej 1: /* $NetBSD: udp_usrreq.c,v 1.43 1997/09/12 10:58:31 drochner 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:
1.42.2.1! thorpej 202: iphlen += sizeof(struct udphdr);
! 203: m->m_len -= iphlen;
! 204: m->m_pkthdr.len -= iphlen;
! 205: m->m_data += iphlen;
1.4 hpeyerl 206: /*
207: * Locate pcb(s) for datagram.
208: * (Algorithm copied from raw_intr().)
209: */
210: last = NULL;
1.22 cgd 211: for (inp = udbtable.inpt_queue.cqh_first;
212: inp != (struct inpcb *)&udbtable.inpt_queue;
213: inp = inp->inp_queue.cqe_next) {
1.4 hpeyerl 214: if (inp->inp_lport != uh->uh_dport)
215: continue;
1.34 mycroft 216: if (!in_nullhost(inp->inp_laddr)) {
217: if (!in_hosteq(inp->inp_laddr, ip->ip_dst))
1.4 hpeyerl 218: continue;
219: }
1.34 mycroft 220: if (!in_nullhost(inp->inp_faddr)) {
221: if (!in_hosteq(inp->inp_faddr, ip->ip_src) ||
1.4 hpeyerl 222: inp->inp_fport != uh->uh_sport)
223: continue;
224: }
225:
226: if (last != NULL) {
227: struct mbuf *n;
228:
229: if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
1.40 thorpej 230: if (last->inp_flags & INP_CONTROLOPTS
231: || last->inp_socket->so_options &
232: SO_TIMESTAMP) {
233: ip_savecontrol(last, &opts,
234: ip, n);
235: }
236: if (sbappendaddr(
237: &last->inp_socket->so_rcv,
238: sintosa(&udpsrc), n, opts) == 0) {
1.4 hpeyerl 239: m_freem(n);
1.40 thorpej 240: if (opts)
241: m_freem(opts);
1.13 mycroft 242: } else
1.40 thorpej 243: sorwakeup(last->inp_socket);
244: opts = 0;
1.4 hpeyerl 245: }
246: }
1.40 thorpej 247: last = inp;
1.4 hpeyerl 248: /*
1.13 mycroft 249: * Don't look for additional matches if this one does
250: * not have either the SO_REUSEPORT or SO_REUSEADDR
251: * socket options set. This heuristic avoids searching
252: * through all pcbs in the common case of a non-shared
253: * port. It * assumes that an application will never
254: * clear these options after setting them.
1.4 hpeyerl 255: */
1.40 thorpej 256: if ((last->inp_socket->so_options &
257: (SO_REUSEPORT|SO_REUSEADDR)) == 0)
1.4 hpeyerl 258: break;
259: }
1.6 mycroft 260:
1.4 hpeyerl 261: if (last == NULL) {
262: /*
263: * No matching pcb found; discard datagram.
264: * (No need to send an ICMP Port Unreachable
265: * for a broadcast or multicast datgram.)
266: */
1.13 mycroft 267: udpstat.udps_noportbcast++;
1.4 hpeyerl 268: goto bad;
269: }
1.40 thorpej 270: if (last->inp_flags & INP_CONTROLOPTS ||
271: last->inp_socket->so_options & SO_TIMESTAMP)
272: ip_savecontrol(last, &opts, ip, m);
273: if (sbappendaddr(&last->inp_socket->so_rcv,
274: sintosa(&udpsrc), m, opts) == 0) {
1.13 mycroft 275: udpstat.udps_fullsock++;
1.4 hpeyerl 276: goto bad;
1.13 mycroft 277: }
1.40 thorpej 278: sorwakeup(last->inp_socket);
1.4 hpeyerl 279: return;
280: }
1.1 cgd 281: /*
282: * Locate pcb for datagram.
283: */
1.35 mycroft 284: inp = in_pcblookup_connect(&udbtable, ip->ip_src, uh->uh_sport,
1.26 mycroft 285: ip->ip_dst, uh->uh_dport);
286: if (inp == 0) {
287: ++udpstat.udps_pcbhashmiss;
1.35 mycroft 288: inp = in_pcblookup_bind(&udbtable, ip->ip_dst, uh->uh_dport);
1.18 mycroft 289: if (inp == 0) {
290: udpstat.udps_noport++;
291: if (m->m_flags & (M_BCAST | M_MCAST)) {
292: udpstat.udps_noportbcast++;
293: goto bad;
294: }
295: *ip = save_ip;
1.38 ws 296: #if NIPKDB > 0
297: if (checkipkdb(&ip->ip_src,
298: uh->uh_sport,
299: uh->uh_dport,
300: m,
301: iphlen + sizeof(struct udphdr),
302: len - sizeof(struct udphdr)))
1.37 ws 303: /* It was a debugger connect packet, just drop it now */
304: goto bad;
305: #endif
1.18 mycroft 306: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
307: return;
1.13 mycroft 308: }
1.1 cgd 309: }
310:
311: /*
312: * Construct sockaddr format source address.
313: * Stuff source address and datagram in user buffer.
314: */
1.34 mycroft 315: udpsrc.sin_family = AF_INET;
316: udpsrc.sin_len = sizeof(struct sockaddr_in);
1.36 mycroft 317: udpsrc.sin_addr = ip->ip_src;
1.34 mycroft 318: udpsrc.sin_port = uh->uh_sport;
1.36 mycroft 319: bzero((caddr_t)udpsrc.sin_zero, sizeof(udpsrc.sin_zero));
1.34 mycroft 320:
1.40 thorpej 321: if (inp->inp_flags & INP_CONTROLOPTS ||
322: inp->inp_socket->so_options & SO_TIMESTAMP)
323: ip_savecontrol(inp, &opts, ip, m);
1.1 cgd 324: iphlen += sizeof(struct udphdr);
325: m->m_len -= iphlen;
326: m->m_pkthdr.len -= iphlen;
327: m->m_data += iphlen;
1.34 mycroft 328: if (sbappendaddr(&inp->inp_socket->so_rcv, sintosa(&udpsrc), m,
1.17 mycroft 329: opts) == 0) {
1.1 cgd 330: udpstat.udps_fullsock++;
331: goto bad;
332: }
333: sorwakeup(inp->inp_socket);
334: return;
335: bad:
336: m_freem(m);
337: if (opts)
338: m_freem(opts);
339: }
340:
341: /*
342: * Notify a udp user of an asynchronous error;
343: * just wake up so that he can collect error status.
344: */
1.7 mycroft 345: static void
1.1 cgd 346: udp_notify(inp, errno)
347: register struct inpcb *inp;
1.7 mycroft 348: int errno;
1.1 cgd 349: {
1.34 mycroft 350:
1.1 cgd 351: inp->inp_socket->so_error = errno;
352: sorwakeup(inp->inp_socket);
353: sowwakeup(inp->inp_socket);
354: }
355:
1.27 christos 356: void *
357: udp_ctlinput(cmd, sa, v)
1.1 cgd 358: int cmd;
359: struct sockaddr *sa;
1.27 christos 360: void *v;
1.1 cgd 361: {
1.27 christos 362: register struct ip *ip = v;
1.1 cgd 363: register struct udphdr *uh;
1.21 mycroft 364: extern int inetctlerrmap[];
1.18 mycroft 365: void (*notify) __P((struct inpcb *, int)) = udp_notify;
1.21 mycroft 366: int errno;
1.1 cgd 367:
1.20 mycroft 368: if ((unsigned)cmd >= PRC_NCMDS)
1.27 christos 369: return NULL;
1.20 mycroft 370: errno = inetctlerrmap[cmd];
1.18 mycroft 371: if (PRC_IS_REDIRECT(cmd))
1.19 mycroft 372: notify = in_rtchange, ip = 0;
1.18 mycroft 373: else if (cmd == PRC_HOSTDEAD)
1.19 mycroft 374: ip = 0;
1.23 cgd 375: else if (errno == 0)
1.27 christos 376: return NULL;
1.19 mycroft 377: if (ip) {
1.1 cgd 378: uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
1.34 mycroft 379: in_pcbnotify(&udbtable, satosin(sa)->sin_addr, uh->uh_dport,
380: ip->ip_src, uh->uh_sport, errno, notify);
1.19 mycroft 381: } else
1.34 mycroft 382: in_pcbnotifyall(&udbtable, satosin(sa)->sin_addr, errno,
383: notify);
1.27 christos 384: return NULL;
1.1 cgd 385: }
386:
1.7 mycroft 387: int
1.27 christos 388: #if __STDC__
389: udp_output(struct mbuf *m, ...)
390: #else
391: udp_output(m, va_alist)
392: struct mbuf *m;
393: va_dcl
394: #endif
395: {
1.1 cgd 396: register struct inpcb *inp;
397: register struct udpiphdr *ui;
398: register int len = m->m_pkthdr.len;
1.31 mycroft 399: int error = 0;
1.27 christos 400: va_list ap;
401:
402: va_start(ap, m);
403: inp = va_arg(ap, struct inpcb *);
404: va_end(ap);
1.1 cgd 405:
406: /*
407: * Calculate data length and get a mbuf
408: * for UDP and IP headers.
409: */
1.13 mycroft 410: M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
411: if (m == 0) {
412: error = ENOBUFS;
1.39 thorpej 413: goto release;
414: }
415:
416: /*
417: * Compute the packet length of the IP header, and
418: * punt if the length looks bogus.
419: */
420: if ((len + sizeof(struct udpiphdr)) > IP_MAXPACKET) {
421: error = EMSGSIZE;
1.13 mycroft 422: goto release;
423: }
1.1 cgd 424:
425: /*
426: * Fill in mbuf with extended UDP header
427: * and addresses and length put into network format.
428: */
429: ui = mtod(m, struct udpiphdr *);
1.25 cgd 430: bzero(ui->ui_x1, sizeof ui->ui_x1);
1.1 cgd 431: ui->ui_pr = IPPROTO_UDP;
1.15 cgd 432: ui->ui_len = htons((u_int16_t)len + sizeof (struct udphdr));
1.1 cgd 433: ui->ui_src = inp->inp_laddr;
434: ui->ui_dst = inp->inp_faddr;
435: ui->ui_sport = inp->inp_lport;
436: ui->ui_dport = inp->inp_fport;
437: ui->ui_ulen = ui->ui_len;
438:
439: /*
440: * Stuff checksum and output datagram.
441: */
442: ui->ui_sum = 0;
443: if (udpcksum) {
444: if ((ui->ui_sum = in_cksum(m, sizeof (struct udpiphdr) + len)) == 0)
445: ui->ui_sum = 0xffff;
446: }
447: ((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len;
448: ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */
449: ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */
450: udpstat.udps_opackets++;
1.31 mycroft 451: return (ip_output(m, inp->inp_options, &inp->inp_route,
1.12 mycroft 452: inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST),
1.31 mycroft 453: inp->inp_moptions));
1.1 cgd 454:
455: release:
456: m_freem(m);
457: return (error);
458: }
459:
1.42 thorpej 460: int udp_sendspace = 9216; /* really max datagram size */
461: int udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
1.1 cgd 462: /* 40 1K datagrams */
463:
464: /*ARGSUSED*/
1.7 mycroft 465: int
1.31 mycroft 466: udp_usrreq(so, req, m, nam, control, p)
1.1 cgd 467: struct socket *so;
468: int req;
1.31 mycroft 469: struct mbuf *m, *nam, *control;
1.30 mycroft 470: struct proc *p;
1.1 cgd 471: {
1.31 mycroft 472: register struct inpcb *inp;
1.1 cgd 473: int s;
1.31 mycroft 474: register int error = 0;
1.1 cgd 475:
476: if (req == PRU_CONTROL)
1.31 mycroft 477: return (in_control(so, (long)m, (caddr_t)nam,
1.30 mycroft 478: (struct ifnet *)control, p));
1.31 mycroft 479:
480: s = splsoftnet();
481: inp = sotoinpcb(so);
1.32 mycroft 482: #ifdef DIAGNOSTIC
483: if (req != PRU_SEND && req != PRU_SENDOOB && control)
484: panic("udp_usrreq: unexpected control mbuf");
485: #endif
1.31 mycroft 486: if (inp == 0 && req != PRU_ATTACH) {
487: error = EINVAL;
488: goto release;
489: }
490:
1.1 cgd 491: /*
492: * Note: need to block udp_input while changing
493: * the udp pcb queue and/or pcb addresses.
494: */
495: switch (req) {
496:
497: case PRU_ATTACH:
1.31 mycroft 498: if (inp != 0) {
499: error = EISCONN;
1.1 cgd 500: break;
501: }
1.31 mycroft 502: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
503: error = soreserve(so, udp_sendspace, udp_recvspace);
504: if (error)
505: break;
506: }
1.18 mycroft 507: error = in_pcballoc(so, &udbtable);
1.1 cgd 508: if (error)
509: break;
1.31 mycroft 510: inp = sotoinpcb(so);
511: inp->inp_ip.ip_ttl = ip_defttl;
1.1 cgd 512: break;
513:
514: case PRU_DETACH:
1.31 mycroft 515: in_pcbdetach(inp);
1.1 cgd 516: break;
517:
518: case PRU_BIND:
1.31 mycroft 519: error = in_pcbbind(inp, nam, p);
1.1 cgd 520: break;
521:
522: case PRU_LISTEN:
523: error = EOPNOTSUPP;
524: break;
525:
526: case PRU_CONNECT:
1.31 mycroft 527: error = in_pcbconnect(inp, nam);
528: if (error)
1.1 cgd 529: break;
1.31 mycroft 530: soisconnected(so);
1.1 cgd 531: break;
532:
533: case PRU_CONNECT2:
534: error = EOPNOTSUPP;
535: break;
536:
537: case PRU_DISCONNECT:
1.31 mycroft 538: /*soisdisconnected(so);*/
539: so->so_state &= ~SS_ISCONNECTED; /* XXX */
1.1 cgd 540: in_pcbdisconnect(inp);
1.34 mycroft 541: inp->inp_laddr = zeroin_addr; /* XXX */
1.35 mycroft 542: in_pcbstate(inp, INP_BOUND); /* XXX */
1.1 cgd 543: break;
544:
545: case PRU_SHUTDOWN:
546: socantsendmore(so);
547: break;
548:
1.31 mycroft 549: case PRU_RCVD:
550: error = EOPNOTSUPP;
1.1 cgd 551: break;
552:
1.31 mycroft 553: case PRU_SEND:
1.32 mycroft 554: if (control && control->m_len) {
555: m_freem(control);
556: m_freem(m);
557: error = EINVAL;
558: break;
559: }
1.31 mycroft 560: {
1.35 mycroft 561: struct in_addr laddr; /* XXX */
1.1 cgd 562:
1.31 mycroft 563: if (nam) {
1.35 mycroft 564: laddr = inp->inp_laddr; /* XXX */
1.31 mycroft 565: if ((so->so_state & SS_ISCONNECTED) != 0) {
566: error = EISCONN;
1.32 mycroft 567: goto die;
1.31 mycroft 568: }
569: error = in_pcbconnect(inp, nam);
1.32 mycroft 570: if (error) {
571: die:
572: m_freem(m);
1.31 mycroft 573: break;
1.32 mycroft 574: }
1.31 mycroft 575: } else {
576: if ((so->so_state & SS_ISCONNECTED) == 0) {
577: error = ENOTCONN;
1.32 mycroft 578: goto die;
1.31 mycroft 579: }
580: }
1.33 mycroft 581: error = udp_output(m, inp);
1.31 mycroft 582: if (nam) {
583: in_pcbdisconnect(inp);
1.35 mycroft 584: inp->inp_laddr = laddr; /* XXX */
585: in_pcbstate(inp, INP_BOUND); /* XXX */
1.31 mycroft 586: }
587: }
1.1 cgd 588: break;
589:
590: case PRU_SENSE:
591: /*
592: * stat: don't bother with a blocksize.
593: */
1.31 mycroft 594: splx(s);
1.1 cgd 595: return (0);
596:
1.31 mycroft 597: case PRU_RCVOOB:
598: error = EOPNOTSUPP;
599: break;
600:
1.1 cgd 601: case PRU_SENDOOB:
1.32 mycroft 602: m_freem(control);
1.31 mycroft 603: m_freem(m);
1.1 cgd 604: error = EOPNOTSUPP;
605: break;
606:
1.31 mycroft 607: case PRU_SOCKADDR:
608: in_setsockaddr(inp, nam);
609: break;
610:
611: case PRU_PEERADDR:
612: in_setpeeraddr(inp, nam);
613: break;
1.1 cgd 614:
615: default:
616: panic("udp_usrreq");
617: }
618:
619: release:
1.31 mycroft 620: splx(s);
1.1 cgd 621: return (error);
1.13 mycroft 622: }
623:
624: /*
625: * Sysctl for udp variables.
626: */
1.27 christos 627: int
1.13 mycroft 628: udp_sysctl(name, namelen, oldp, oldlenp, newp, newlen)
629: int *name;
630: u_int namelen;
631: void *oldp;
632: size_t *oldlenp;
633: void *newp;
634: size_t newlen;
635: {
636: /* All sysctl names at this level are terminal. */
637: if (namelen != 1)
638: return (ENOTDIR);
639:
640: switch (name[0]) {
641: case UDPCTL_CHECKSUM:
642: return (sysctl_int(oldp, oldlenp, newp, newlen, &udpcksum));
1.42 thorpej 643: case UDPCTL_SENDSPACE:
644: return (sysctl_int(oldp, oldlenp, newp, newlen,
645: &udp_sendspace));
646: case UDPCTL_RECVSPACE:
647: return (sysctl_int(oldp, oldlenp, newp, newlen,
648: &udp_recvspace));
1.13 mycroft 649: default:
650: return (ENOPROTOOPT);
651: }
652: /* NOTREACHED */
1.1 cgd 653: }
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