Annotation of src/sys/netinet/udp_usrreq.c, Revision 1.45
1.45 ! thorpej 1: /* $NetBSD: udp_usrreq.c,v 1.44 1998/01/05 10:32:16 thorpej Exp $ */
1.14 cgd 2:
1.1 cgd 3: /*
1.44 thorpej 4: * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
1.13 mycroft 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: *
1.44 thorpej 35: * @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95
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:
1.43 drochner 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
1.45 ! thorpej 306: ip->ip_len += iphlen;
1.18 mycroft 307: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
308: return;
1.13 mycroft 309: }
1.1 cgd 310: }
311:
312: /*
313: * Construct sockaddr format source address.
314: * Stuff source address and datagram in user buffer.
315: */
1.34 mycroft 316: udpsrc.sin_family = AF_INET;
317: udpsrc.sin_len = sizeof(struct sockaddr_in);
1.36 mycroft 318: udpsrc.sin_addr = ip->ip_src;
1.34 mycroft 319: udpsrc.sin_port = uh->uh_sport;
1.36 mycroft 320: bzero((caddr_t)udpsrc.sin_zero, sizeof(udpsrc.sin_zero));
1.34 mycroft 321:
1.40 thorpej 322: if (inp->inp_flags & INP_CONTROLOPTS ||
323: inp->inp_socket->so_options & SO_TIMESTAMP)
324: ip_savecontrol(inp, &opts, ip, m);
1.1 cgd 325: iphlen += sizeof(struct udphdr);
326: m->m_len -= iphlen;
327: m->m_pkthdr.len -= iphlen;
328: m->m_data += iphlen;
1.34 mycroft 329: if (sbappendaddr(&inp->inp_socket->so_rcv, sintosa(&udpsrc), m,
1.17 mycroft 330: opts) == 0) {
1.1 cgd 331: udpstat.udps_fullsock++;
332: goto bad;
333: }
334: sorwakeup(inp->inp_socket);
335: return;
336: bad:
337: m_freem(m);
338: if (opts)
339: m_freem(opts);
340: }
341:
342: /*
343: * Notify a udp user of an asynchronous error;
344: * just wake up so that he can collect error status.
345: */
1.7 mycroft 346: static void
1.1 cgd 347: udp_notify(inp, errno)
348: register struct inpcb *inp;
1.7 mycroft 349: int errno;
1.1 cgd 350: {
1.34 mycroft 351:
1.1 cgd 352: inp->inp_socket->so_error = errno;
353: sorwakeup(inp->inp_socket);
354: sowwakeup(inp->inp_socket);
355: }
356:
1.27 christos 357: void *
358: udp_ctlinput(cmd, sa, v)
1.1 cgd 359: int cmd;
360: struct sockaddr *sa;
1.27 christos 361: void *v;
1.1 cgd 362: {
1.27 christos 363: register struct ip *ip = v;
1.1 cgd 364: register struct udphdr *uh;
1.21 mycroft 365: extern int inetctlerrmap[];
1.18 mycroft 366: void (*notify) __P((struct inpcb *, int)) = udp_notify;
1.21 mycroft 367: int errno;
1.1 cgd 368:
1.20 mycroft 369: if ((unsigned)cmd >= PRC_NCMDS)
1.27 christos 370: return NULL;
1.20 mycroft 371: errno = inetctlerrmap[cmd];
1.18 mycroft 372: if (PRC_IS_REDIRECT(cmd))
1.19 mycroft 373: notify = in_rtchange, ip = 0;
1.18 mycroft 374: else if (cmd == PRC_HOSTDEAD)
1.19 mycroft 375: ip = 0;
1.23 cgd 376: else if (errno == 0)
1.27 christos 377: return NULL;
1.19 mycroft 378: if (ip) {
1.1 cgd 379: uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
1.34 mycroft 380: in_pcbnotify(&udbtable, satosin(sa)->sin_addr, uh->uh_dport,
381: ip->ip_src, uh->uh_sport, errno, notify);
1.19 mycroft 382: } else
1.34 mycroft 383: in_pcbnotifyall(&udbtable, satosin(sa)->sin_addr, errno,
384: notify);
1.27 christos 385: return NULL;
1.1 cgd 386: }
387:
1.7 mycroft 388: int
1.27 christos 389: #if __STDC__
390: udp_output(struct mbuf *m, ...)
391: #else
392: udp_output(m, va_alist)
393: struct mbuf *m;
394: va_dcl
395: #endif
396: {
1.1 cgd 397: register struct inpcb *inp;
398: register struct udpiphdr *ui;
399: register int len = m->m_pkthdr.len;
1.31 mycroft 400: int error = 0;
1.27 christos 401: va_list ap;
402:
403: va_start(ap, m);
404: inp = va_arg(ap, struct inpcb *);
405: va_end(ap);
1.1 cgd 406:
407: /*
408: * Calculate data length and get a mbuf
409: * for UDP and IP headers.
410: */
1.13 mycroft 411: M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
412: if (m == 0) {
413: error = ENOBUFS;
1.39 thorpej 414: goto release;
415: }
416:
417: /*
418: * Compute the packet length of the IP header, and
419: * punt if the length looks bogus.
420: */
421: if ((len + sizeof(struct udpiphdr)) > IP_MAXPACKET) {
422: error = EMSGSIZE;
1.13 mycroft 423: goto release;
424: }
1.1 cgd 425:
426: /*
427: * Fill in mbuf with extended UDP header
428: * and addresses and length put into network format.
429: */
430: ui = mtod(m, struct udpiphdr *);
1.25 cgd 431: bzero(ui->ui_x1, sizeof ui->ui_x1);
1.1 cgd 432: ui->ui_pr = IPPROTO_UDP;
1.15 cgd 433: ui->ui_len = htons((u_int16_t)len + sizeof (struct udphdr));
1.1 cgd 434: ui->ui_src = inp->inp_laddr;
435: ui->ui_dst = inp->inp_faddr;
436: ui->ui_sport = inp->inp_lport;
437: ui->ui_dport = inp->inp_fport;
438: ui->ui_ulen = ui->ui_len;
439:
440: /*
441: * Stuff checksum and output datagram.
442: */
443: ui->ui_sum = 0;
444: if (udpcksum) {
445: if ((ui->ui_sum = in_cksum(m, sizeof (struct udpiphdr) + len)) == 0)
446: ui->ui_sum = 0xffff;
447: }
448: ((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len;
449: ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */
450: ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */
451: udpstat.udps_opackets++;
1.31 mycroft 452: return (ip_output(m, inp->inp_options, &inp->inp_route,
1.12 mycroft 453: inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST),
1.31 mycroft 454: inp->inp_moptions));
1.1 cgd 455:
456: release:
457: m_freem(m);
458: return (error);
459: }
460:
1.42 thorpej 461: int udp_sendspace = 9216; /* really max datagram size */
462: int udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
1.1 cgd 463: /* 40 1K datagrams */
464:
465: /*ARGSUSED*/
1.7 mycroft 466: int
1.31 mycroft 467: udp_usrreq(so, req, m, nam, control, p)
1.1 cgd 468: struct socket *so;
469: int req;
1.31 mycroft 470: struct mbuf *m, *nam, *control;
1.30 mycroft 471: struct proc *p;
1.1 cgd 472: {
1.31 mycroft 473: register struct inpcb *inp;
1.1 cgd 474: int s;
1.31 mycroft 475: register int error = 0;
1.1 cgd 476:
477: if (req == PRU_CONTROL)
1.31 mycroft 478: return (in_control(so, (long)m, (caddr_t)nam,
1.30 mycroft 479: (struct ifnet *)control, p));
1.31 mycroft 480:
481: s = splsoftnet();
482: inp = sotoinpcb(so);
1.32 mycroft 483: #ifdef DIAGNOSTIC
484: if (req != PRU_SEND && req != PRU_SENDOOB && control)
485: panic("udp_usrreq: unexpected control mbuf");
486: #endif
1.31 mycroft 487: if (inp == 0 && req != PRU_ATTACH) {
488: error = EINVAL;
489: goto release;
490: }
491:
1.1 cgd 492: /*
493: * Note: need to block udp_input while changing
494: * the udp pcb queue and/or pcb addresses.
495: */
496: switch (req) {
497:
498: case PRU_ATTACH:
1.31 mycroft 499: if (inp != 0) {
500: error = EISCONN;
1.1 cgd 501: break;
502: }
1.31 mycroft 503: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
504: error = soreserve(so, udp_sendspace, udp_recvspace);
505: if (error)
506: break;
507: }
1.18 mycroft 508: error = in_pcballoc(so, &udbtable);
1.1 cgd 509: if (error)
510: break;
1.31 mycroft 511: inp = sotoinpcb(so);
512: inp->inp_ip.ip_ttl = ip_defttl;
1.1 cgd 513: break;
514:
515: case PRU_DETACH:
1.31 mycroft 516: in_pcbdetach(inp);
1.1 cgd 517: break;
518:
519: case PRU_BIND:
1.31 mycroft 520: error = in_pcbbind(inp, nam, p);
1.1 cgd 521: break;
522:
523: case PRU_LISTEN:
524: error = EOPNOTSUPP;
525: break;
526:
527: case PRU_CONNECT:
1.31 mycroft 528: error = in_pcbconnect(inp, nam);
529: if (error)
1.1 cgd 530: break;
1.31 mycroft 531: soisconnected(so);
1.1 cgd 532: break;
533:
534: case PRU_CONNECT2:
535: error = EOPNOTSUPP;
536: break;
537:
538: case PRU_DISCONNECT:
1.31 mycroft 539: /*soisdisconnected(so);*/
540: so->so_state &= ~SS_ISCONNECTED; /* XXX */
1.1 cgd 541: in_pcbdisconnect(inp);
1.34 mycroft 542: inp->inp_laddr = zeroin_addr; /* XXX */
1.35 mycroft 543: in_pcbstate(inp, INP_BOUND); /* XXX */
1.1 cgd 544: break;
545:
546: case PRU_SHUTDOWN:
547: socantsendmore(so);
548: break;
549:
1.31 mycroft 550: case PRU_RCVD:
551: error = EOPNOTSUPP;
1.1 cgd 552: break;
553:
1.31 mycroft 554: case PRU_SEND:
1.32 mycroft 555: if (control && control->m_len) {
556: m_freem(control);
557: m_freem(m);
558: error = EINVAL;
559: break;
560: }
1.31 mycroft 561: {
1.35 mycroft 562: struct in_addr laddr; /* XXX */
1.1 cgd 563:
1.31 mycroft 564: if (nam) {
1.35 mycroft 565: laddr = inp->inp_laddr; /* XXX */
1.31 mycroft 566: if ((so->so_state & SS_ISCONNECTED) != 0) {
567: error = EISCONN;
1.32 mycroft 568: goto die;
1.31 mycroft 569: }
570: error = in_pcbconnect(inp, nam);
1.32 mycroft 571: if (error) {
572: die:
573: m_freem(m);
1.31 mycroft 574: break;
1.32 mycroft 575: }
1.31 mycroft 576: } else {
577: if ((so->so_state & SS_ISCONNECTED) == 0) {
578: error = ENOTCONN;
1.32 mycroft 579: goto die;
1.31 mycroft 580: }
581: }
1.33 mycroft 582: error = udp_output(m, inp);
1.31 mycroft 583: if (nam) {
584: in_pcbdisconnect(inp);
1.35 mycroft 585: inp->inp_laddr = laddr; /* XXX */
586: in_pcbstate(inp, INP_BOUND); /* XXX */
1.31 mycroft 587: }
588: }
1.1 cgd 589: break;
590:
591: case PRU_SENSE:
592: /*
593: * stat: don't bother with a blocksize.
594: */
1.31 mycroft 595: splx(s);
1.1 cgd 596: return (0);
597:
1.31 mycroft 598: case PRU_RCVOOB:
599: error = EOPNOTSUPP;
600: break;
601:
1.1 cgd 602: case PRU_SENDOOB:
1.32 mycroft 603: m_freem(control);
1.31 mycroft 604: m_freem(m);
1.1 cgd 605: error = EOPNOTSUPP;
606: break;
607:
1.31 mycroft 608: case PRU_SOCKADDR:
609: in_setsockaddr(inp, nam);
610: break;
611:
612: case PRU_PEERADDR:
613: in_setpeeraddr(inp, nam);
614: break;
1.1 cgd 615:
616: default:
617: panic("udp_usrreq");
618: }
619:
620: release:
1.31 mycroft 621: splx(s);
1.1 cgd 622: return (error);
1.13 mycroft 623: }
624:
625: /*
626: * Sysctl for udp variables.
627: */
1.27 christos 628: int
1.13 mycroft 629: udp_sysctl(name, namelen, oldp, oldlenp, newp, newlen)
630: int *name;
631: u_int namelen;
632: void *oldp;
633: size_t *oldlenp;
634: void *newp;
635: size_t newlen;
636: {
637: /* All sysctl names at this level are terminal. */
638: if (namelen != 1)
639: return (ENOTDIR);
640:
641: switch (name[0]) {
642: case UDPCTL_CHECKSUM:
643: return (sysctl_int(oldp, oldlenp, newp, newlen, &udpcksum));
1.42 thorpej 644: case UDPCTL_SENDSPACE:
645: return (sysctl_int(oldp, oldlenp, newp, newlen,
646: &udp_sendspace));
647: case UDPCTL_RECVSPACE:
648: return (sysctl_int(oldp, oldlenp, newp, newlen,
649: &udp_recvspace));
1.13 mycroft 650: default:
651: return (ENOPROTOOPT);
652: }
653: /* NOTREACHED */
1.1 cgd 654: }
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