Annotation of src/sys/netinet/udp_usrreq.c, Revision 1.40
1.40 ! thorpej 1: /* $NetBSD: udp_usrreq.c,v 1.39 1996/10/25 06:35:16 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;
294: ip->ip_len += iphlen;
1.38 ws 295: #if NIPKDB > 0
296: if (checkipkdb(&ip->ip_src,
297: uh->uh_sport,
298: uh->uh_dport,
299: m,
300: iphlen + sizeof(struct udphdr),
301: len - sizeof(struct udphdr)))
1.37 ws 302: /* It was a debugger connect packet, just drop it now */
303: goto bad;
304: #endif
1.18 mycroft 305: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
306: return;
1.13 mycroft 307: }
1.1 cgd 308: }
309:
310: /*
311: * Construct sockaddr format source address.
312: * Stuff source address and datagram in user buffer.
313: */
1.34 mycroft 314: udpsrc.sin_family = AF_INET;
315: udpsrc.sin_len = sizeof(struct sockaddr_in);
1.36 mycroft 316: udpsrc.sin_addr = ip->ip_src;
1.34 mycroft 317: udpsrc.sin_port = uh->uh_sport;
1.36 mycroft 318: bzero((caddr_t)udpsrc.sin_zero, sizeof(udpsrc.sin_zero));
1.34 mycroft 319:
1.40 ! thorpej 320: if (inp->inp_flags & INP_CONTROLOPTS ||
! 321: inp->inp_socket->so_options & SO_TIMESTAMP)
! 322: ip_savecontrol(inp, &opts, ip, m);
1.1 cgd 323: iphlen += sizeof(struct udphdr);
324: m->m_len -= iphlen;
325: m->m_pkthdr.len -= iphlen;
326: m->m_data += iphlen;
1.34 mycroft 327: if (sbappendaddr(&inp->inp_socket->so_rcv, sintosa(&udpsrc), m,
1.17 mycroft 328: opts) == 0) {
1.1 cgd 329: udpstat.udps_fullsock++;
330: goto bad;
331: }
332: sorwakeup(inp->inp_socket);
333: return;
334: bad:
335: m_freem(m);
336: if (opts)
337: m_freem(opts);
338: }
339:
340: /*
341: * Notify a udp user of an asynchronous error;
342: * just wake up so that he can collect error status.
343: */
1.7 mycroft 344: static void
1.1 cgd 345: udp_notify(inp, errno)
346: register struct inpcb *inp;
1.7 mycroft 347: int errno;
1.1 cgd 348: {
1.34 mycroft 349:
1.1 cgd 350: inp->inp_socket->so_error = errno;
351: sorwakeup(inp->inp_socket);
352: sowwakeup(inp->inp_socket);
353: }
354:
1.27 christos 355: void *
356: udp_ctlinput(cmd, sa, v)
1.1 cgd 357: int cmd;
358: struct sockaddr *sa;
1.27 christos 359: void *v;
1.1 cgd 360: {
1.27 christos 361: register struct ip *ip = v;
1.1 cgd 362: register struct udphdr *uh;
1.21 mycroft 363: extern int inetctlerrmap[];
1.18 mycroft 364: void (*notify) __P((struct inpcb *, int)) = udp_notify;
1.21 mycroft 365: int errno;
1.1 cgd 366:
1.20 mycroft 367: if ((unsigned)cmd >= PRC_NCMDS)
1.27 christos 368: return NULL;
1.20 mycroft 369: errno = inetctlerrmap[cmd];
1.18 mycroft 370: if (PRC_IS_REDIRECT(cmd))
1.19 mycroft 371: notify = in_rtchange, ip = 0;
1.18 mycroft 372: else if (cmd == PRC_HOSTDEAD)
1.19 mycroft 373: ip = 0;
1.23 cgd 374: else if (errno == 0)
1.27 christos 375: return NULL;
1.19 mycroft 376: if (ip) {
1.1 cgd 377: uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
1.34 mycroft 378: in_pcbnotify(&udbtable, satosin(sa)->sin_addr, uh->uh_dport,
379: ip->ip_src, uh->uh_sport, errno, notify);
1.19 mycroft 380: } else
1.34 mycroft 381: in_pcbnotifyall(&udbtable, satosin(sa)->sin_addr, errno,
382: notify);
1.27 christos 383: return NULL;
1.1 cgd 384: }
385:
1.7 mycroft 386: int
1.27 christos 387: #if __STDC__
388: udp_output(struct mbuf *m, ...)
389: #else
390: udp_output(m, va_alist)
391: struct mbuf *m;
392: va_dcl
393: #endif
394: {
1.1 cgd 395: register struct inpcb *inp;
396: register struct udpiphdr *ui;
397: register int len = m->m_pkthdr.len;
1.31 mycroft 398: int error = 0;
1.27 christos 399: va_list ap;
400:
401: va_start(ap, m);
402: inp = va_arg(ap, struct inpcb *);
403: va_end(ap);
1.1 cgd 404:
405: /*
406: * Calculate data length and get a mbuf
407: * for UDP and IP headers.
408: */
1.13 mycroft 409: M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
410: if (m == 0) {
411: error = ENOBUFS;
1.39 thorpej 412: goto release;
413: }
414:
415: /*
416: * Compute the packet length of the IP header, and
417: * punt if the length looks bogus.
418: */
419: if ((len + sizeof(struct udpiphdr)) > IP_MAXPACKET) {
420: error = EMSGSIZE;
1.13 mycroft 421: goto release;
422: }
1.1 cgd 423:
424: /*
425: * Fill in mbuf with extended UDP header
426: * and addresses and length put into network format.
427: */
428: ui = mtod(m, struct udpiphdr *);
1.25 cgd 429: bzero(ui->ui_x1, sizeof ui->ui_x1);
1.1 cgd 430: ui->ui_pr = IPPROTO_UDP;
1.15 cgd 431: ui->ui_len = htons((u_int16_t)len + sizeof (struct udphdr));
1.1 cgd 432: ui->ui_src = inp->inp_laddr;
433: ui->ui_dst = inp->inp_faddr;
434: ui->ui_sport = inp->inp_lport;
435: ui->ui_dport = inp->inp_fport;
436: ui->ui_ulen = ui->ui_len;
437:
438: /*
439: * Stuff checksum and output datagram.
440: */
441: ui->ui_sum = 0;
442: if (udpcksum) {
443: if ((ui->ui_sum = in_cksum(m, sizeof (struct udpiphdr) + len)) == 0)
444: ui->ui_sum = 0xffff;
445: }
446: ((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len;
447: ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */
448: ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */
449: udpstat.udps_opackets++;
1.31 mycroft 450: return (ip_output(m, inp->inp_options, &inp->inp_route,
1.12 mycroft 451: inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST),
1.31 mycroft 452: inp->inp_moptions));
1.1 cgd 453:
454: release:
455: m_freem(m);
456: return (error);
457: }
458:
459: u_long udp_sendspace = 9216; /* really max datagram size */
460: u_long udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
461: /* 40 1K datagrams */
462:
463: /*ARGSUSED*/
1.7 mycroft 464: int
1.31 mycroft 465: udp_usrreq(so, req, m, nam, control, p)
1.1 cgd 466: struct socket *so;
467: int req;
1.31 mycroft 468: struct mbuf *m, *nam, *control;
1.30 mycroft 469: struct proc *p;
1.1 cgd 470: {
1.31 mycroft 471: register struct inpcb *inp;
1.1 cgd 472: int s;
1.31 mycroft 473: register int error = 0;
1.1 cgd 474:
475: if (req == PRU_CONTROL)
1.31 mycroft 476: return (in_control(so, (long)m, (caddr_t)nam,
1.30 mycroft 477: (struct ifnet *)control, p));
1.31 mycroft 478:
479: s = splsoftnet();
480: inp = sotoinpcb(so);
1.32 mycroft 481: #ifdef DIAGNOSTIC
482: if (req != PRU_SEND && req != PRU_SENDOOB && control)
483: panic("udp_usrreq: unexpected control mbuf");
484: #endif
1.31 mycroft 485: if (inp == 0 && req != PRU_ATTACH) {
486: error = EINVAL;
487: goto release;
488: }
489:
1.1 cgd 490: /*
491: * Note: need to block udp_input while changing
492: * the udp pcb queue and/or pcb addresses.
493: */
494: switch (req) {
495:
496: case PRU_ATTACH:
1.31 mycroft 497: if (inp != 0) {
498: error = EISCONN;
1.1 cgd 499: break;
500: }
1.31 mycroft 501: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
502: error = soreserve(so, udp_sendspace, udp_recvspace);
503: if (error)
504: break;
505: }
1.18 mycroft 506: error = in_pcballoc(so, &udbtable);
1.1 cgd 507: if (error)
508: break;
1.31 mycroft 509: inp = sotoinpcb(so);
510: inp->inp_ip.ip_ttl = ip_defttl;
1.1 cgd 511: break;
512:
513: case PRU_DETACH:
1.31 mycroft 514: in_pcbdetach(inp);
1.1 cgd 515: break;
516:
517: case PRU_BIND:
1.31 mycroft 518: error = in_pcbbind(inp, nam, p);
1.1 cgd 519: break;
520:
521: case PRU_LISTEN:
522: error = EOPNOTSUPP;
523: break;
524:
525: case PRU_CONNECT:
1.31 mycroft 526: error = in_pcbconnect(inp, nam);
527: if (error)
1.1 cgd 528: break;
1.31 mycroft 529: soisconnected(so);
1.1 cgd 530: break;
531:
532: case PRU_CONNECT2:
533: error = EOPNOTSUPP;
534: break;
535:
536: case PRU_DISCONNECT:
1.31 mycroft 537: /*soisdisconnected(so);*/
538: so->so_state &= ~SS_ISCONNECTED; /* XXX */
1.1 cgd 539: in_pcbdisconnect(inp);
1.34 mycroft 540: inp->inp_laddr = zeroin_addr; /* XXX */
1.35 mycroft 541: in_pcbstate(inp, INP_BOUND); /* XXX */
1.1 cgd 542: break;
543:
544: case PRU_SHUTDOWN:
545: socantsendmore(so);
546: break;
547:
1.31 mycroft 548: case PRU_RCVD:
549: error = EOPNOTSUPP;
1.1 cgd 550: break;
551:
1.31 mycroft 552: case PRU_SEND:
1.32 mycroft 553: if (control && control->m_len) {
554: m_freem(control);
555: m_freem(m);
556: error = EINVAL;
557: break;
558: }
1.31 mycroft 559: {
1.35 mycroft 560: struct in_addr laddr; /* XXX */
1.1 cgd 561:
1.31 mycroft 562: if (nam) {
1.35 mycroft 563: laddr = inp->inp_laddr; /* XXX */
1.31 mycroft 564: if ((so->so_state & SS_ISCONNECTED) != 0) {
565: error = EISCONN;
1.32 mycroft 566: goto die;
1.31 mycroft 567: }
568: error = in_pcbconnect(inp, nam);
1.32 mycroft 569: if (error) {
570: die:
571: m_freem(m);
1.31 mycroft 572: break;
1.32 mycroft 573: }
1.31 mycroft 574: } else {
575: if ((so->so_state & SS_ISCONNECTED) == 0) {
576: error = ENOTCONN;
1.32 mycroft 577: goto die;
1.31 mycroft 578: }
579: }
1.33 mycroft 580: error = udp_output(m, inp);
1.31 mycroft 581: if (nam) {
582: in_pcbdisconnect(inp);
1.35 mycroft 583: inp->inp_laddr = laddr; /* XXX */
584: in_pcbstate(inp, INP_BOUND); /* XXX */
1.31 mycroft 585: }
586: }
1.1 cgd 587: break;
588:
589: case PRU_SENSE:
590: /*
591: * stat: don't bother with a blocksize.
592: */
1.31 mycroft 593: splx(s);
1.1 cgd 594: return (0);
595:
1.31 mycroft 596: case PRU_RCVOOB:
597: error = EOPNOTSUPP;
598: break;
599:
1.1 cgd 600: case PRU_SENDOOB:
1.32 mycroft 601: m_freem(control);
1.31 mycroft 602: m_freem(m);
1.1 cgd 603: error = EOPNOTSUPP;
604: break;
605:
1.31 mycroft 606: case PRU_SOCKADDR:
607: in_setsockaddr(inp, nam);
608: break;
609:
610: case PRU_PEERADDR:
611: in_setpeeraddr(inp, nam);
612: break;
1.1 cgd 613:
614: default:
615: panic("udp_usrreq");
616: }
617:
618: release:
1.31 mycroft 619: splx(s);
1.1 cgd 620: return (error);
1.13 mycroft 621: }
622:
623: /*
624: * Sysctl for udp variables.
625: */
1.27 christos 626: int
1.13 mycroft 627: udp_sysctl(name, namelen, oldp, oldlenp, newp, newlen)
628: int *name;
629: u_int namelen;
630: void *oldp;
631: size_t *oldlenp;
632: void *newp;
633: size_t newlen;
634: {
635: /* All sysctl names at this level are terminal. */
636: if (namelen != 1)
637: return (ENOTDIR);
638:
639: switch (name[0]) {
640: case UDPCTL_CHECKSUM:
641: return (sysctl_int(oldp, oldlenp, newp, newlen, &udpcksum));
642: default:
643: return (ENOPROTOOPT);
644: }
645: /* NOTREACHED */
1.1 cgd 646: }
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