Annotation of src/sys/netinet/udp_usrreq.c, Revision 1.35
1.35 ! mycroft 1: /* $NetBSD: udp_usrreq.c,v 1.34 1996/09/09 14:51:23 mycroft 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: */
37:
1.5 mycroft 38: #include <sys/param.h>
39: #include <sys/malloc.h>
40: #include <sys/mbuf.h>
41: #include <sys/protosw.h>
42: #include <sys/socket.h>
43: #include <sys/socketvar.h>
1.13 mycroft 44: #include <sys/errno.h>
1.5 mycroft 45: #include <sys/stat.h>
1.27 christos 46: #include <sys/systm.h>
47: #include <sys/proc.h>
48:
49: #include <vm/vm.h>
50: #include <sys/sysctl.h>
1.1 cgd 51:
1.5 mycroft 52: #include <net/if.h>
53: #include <net/route.h>
1.1 cgd 54:
1.5 mycroft 55: #include <netinet/in.h>
56: #include <netinet/in_systm.h>
1.15 cgd 57: #include <netinet/in_var.h>
1.5 mycroft 58: #include <netinet/ip.h>
59: #include <netinet/in_pcb.h>
60: #include <netinet/ip_var.h>
61: #include <netinet/ip_icmp.h>
62: #include <netinet/udp.h>
63: #include <netinet/udp_var.h>
1.1 cgd 64:
1.27 christos 65: #include <machine/stdarg.h>
66:
1.8 mycroft 67: /*
68: * UDP protocol implementation.
69: * Per RFC 768, August, 1980.
70: */
71: #ifndef COMPAT_42
72: int udpcksum = 1;
73: #else
74: int udpcksum = 0; /* XXX */
75: #endif
76:
1.13 mycroft 77: static void udp_notify __P((struct inpcb *, int));
78: static struct mbuf *udp_saveopt __P((caddr_t, int, 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)) {
1.4 hpeyerl 176: struct socket *last;
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);
198: udpsrc.sin_port = uh->uh_sport;
199: udpsrc.sin_addr = ip->ip_src;
200:
1.4 hpeyerl 201: m->m_len -= sizeof (struct udpiphdr);
202: m->m_data += sizeof (struct udpiphdr);
203: /*
204: * Locate pcb(s) for datagram.
205: * (Algorithm copied from raw_intr().)
206: */
207: last = NULL;
1.22 cgd 208: for (inp = udbtable.inpt_queue.cqh_first;
209: inp != (struct inpcb *)&udbtable.inpt_queue;
210: inp = inp->inp_queue.cqe_next) {
1.4 hpeyerl 211: if (inp->inp_lport != uh->uh_dport)
212: continue;
1.34 mycroft 213: if (!in_nullhost(inp->inp_laddr)) {
214: if (!in_hosteq(inp->inp_laddr, ip->ip_dst))
1.4 hpeyerl 215: continue;
216: }
1.34 mycroft 217: if (!in_nullhost(inp->inp_faddr)) {
218: if (!in_hosteq(inp->inp_faddr, ip->ip_src) ||
1.4 hpeyerl 219: inp->inp_fport != uh->uh_sport)
220: continue;
221: }
222:
223: if (last != NULL) {
224: struct mbuf *n;
225:
226: if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
227: if (sbappendaddr(&last->so_rcv,
1.34 mycroft 228: sintosa(&udpsrc), n,
1.17 mycroft 229: (struct mbuf *)0) == 0) {
1.4 hpeyerl 230: m_freem(n);
1.13 mycroft 231: udpstat.udps_fullsock++;
232: } else
1.4 hpeyerl 233: sorwakeup(last);
234: }
235: }
236: last = inp->inp_socket;
237: /*
1.13 mycroft 238: * Don't look for additional matches if this one does
239: * not have either the SO_REUSEPORT or SO_REUSEADDR
240: * socket options set. This heuristic avoids searching
241: * through all pcbs in the common case of a non-shared
242: * port. It * assumes that an application will never
243: * clear these options after setting them.
1.4 hpeyerl 244: */
1.28 christos 245: if ((last->so_options&(SO_REUSEPORT|SO_REUSEADDR)) == 0)
1.4 hpeyerl 246: break;
247: }
1.6 mycroft 248:
1.4 hpeyerl 249: if (last == NULL) {
250: /*
251: * No matching pcb found; discard datagram.
252: * (No need to send an ICMP Port Unreachable
253: * for a broadcast or multicast datgram.)
254: */
1.13 mycroft 255: udpstat.udps_noportbcast++;
1.4 hpeyerl 256: goto bad;
257: }
1.34 mycroft 258: if (sbappendaddr(&last->so_rcv, sintosa(&udpsrc), m,
1.17 mycroft 259: (struct mbuf *)0) == 0) {
1.13 mycroft 260: udpstat.udps_fullsock++;
1.4 hpeyerl 261: goto bad;
1.13 mycroft 262: }
1.4 hpeyerl 263: sorwakeup(last);
264: return;
265: }
1.1 cgd 266: /*
267: * Locate pcb for datagram.
268: */
1.35 ! mycroft 269: inp = in_pcblookup_connect(&udbtable, ip->ip_src, uh->uh_sport,
1.26 mycroft 270: ip->ip_dst, uh->uh_dport);
271: if (inp == 0) {
272: ++udpstat.udps_pcbhashmiss;
1.35 ! mycroft 273: inp = in_pcblookup_bind(&udbtable, ip->ip_dst, uh->uh_dport);
1.18 mycroft 274: if (inp == 0) {
275: udpstat.udps_noport++;
276: if (m->m_flags & (M_BCAST | M_MCAST)) {
277: udpstat.udps_noportbcast++;
278: goto bad;
279: }
280: *ip = save_ip;
281: ip->ip_len += iphlen;
282: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
283: return;
1.13 mycroft 284: }
1.1 cgd 285: }
286:
287: /*
288: * Construct sockaddr format source address.
289: * Stuff source address and datagram in user buffer.
290: */
1.34 mycroft 291: udpsrc.sin_family = AF_INET;
292: udpsrc.sin_len = sizeof(struct sockaddr_in);
293: udpsrc.sin_port = uh->uh_sport;
294: udpsrc.sin_addr = ip->ip_src;
295:
1.1 cgd 296: if (inp->inp_flags & INP_CONTROLOPTS) {
297: struct mbuf **mp = &opts;
298:
299: if (inp->inp_flags & INP_RECVDSTADDR) {
300: *mp = udp_saveopt((caddr_t) &ip->ip_dst,
301: sizeof(struct in_addr), IP_RECVDSTADDR);
302: if (*mp)
303: mp = &(*mp)->m_next;
304: }
305: #ifdef notyet
306: /* options were tossed above */
307: if (inp->inp_flags & INP_RECVOPTS) {
308: *mp = udp_saveopt((caddr_t) opts_deleted_above,
309: sizeof(struct in_addr), IP_RECVOPTS);
310: if (*mp)
311: mp = &(*mp)->m_next;
312: }
313: /* ip_srcroute doesn't do what we want here, need to fix */
314: if (inp->inp_flags & INP_RECVRETOPTS) {
315: *mp = udp_saveopt((caddr_t) ip_srcroute(),
316: sizeof(struct in_addr), IP_RECVRETOPTS);
317: if (*mp)
318: mp = &(*mp)->m_next;
319: }
320: #endif
321: }
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: * Create a "control" mbuf containing the specified data
341: * with the specified type for presentation with a datagram.
342: */
1.13 mycroft 343: struct mbuf *
1.1 cgd 344: udp_saveopt(p, size, type)
345: caddr_t p;
346: register int size;
347: int type;
348: {
349: register struct cmsghdr *cp;
350: struct mbuf *m;
351:
352: if ((m = m_get(M_DONTWAIT, MT_CONTROL)) == NULL)
353: return ((struct mbuf *) NULL);
354: cp = (struct cmsghdr *) mtod(m, struct cmsghdr *);
1.13 mycroft 355: bcopy(p, CMSG_DATA(cp), size);
1.1 cgd 356: size += sizeof(*cp);
357: m->m_len = size;
358: cp->cmsg_len = size;
359: cp->cmsg_level = IPPROTO_IP;
360: cp->cmsg_type = type;
361: return (m);
362: }
363:
364: /*
365: * Notify a udp user of an asynchronous error;
366: * just wake up so that he can collect error status.
367: */
1.7 mycroft 368: static void
1.1 cgd 369: udp_notify(inp, errno)
370: register struct inpcb *inp;
1.7 mycroft 371: int errno;
1.1 cgd 372: {
1.34 mycroft 373:
1.1 cgd 374: inp->inp_socket->so_error = errno;
375: sorwakeup(inp->inp_socket);
376: sowwakeup(inp->inp_socket);
377: }
378:
1.27 christos 379: void *
380: udp_ctlinput(cmd, sa, v)
1.1 cgd 381: int cmd;
382: struct sockaddr *sa;
1.27 christos 383: void *v;
1.1 cgd 384: {
1.27 christos 385: register struct ip *ip = v;
1.1 cgd 386: register struct udphdr *uh;
1.21 mycroft 387: extern int inetctlerrmap[];
1.18 mycroft 388: void (*notify) __P((struct inpcb *, int)) = udp_notify;
1.21 mycroft 389: int errno;
1.1 cgd 390:
1.20 mycroft 391: if ((unsigned)cmd >= PRC_NCMDS)
1.27 christos 392: return NULL;
1.20 mycroft 393: errno = inetctlerrmap[cmd];
1.18 mycroft 394: if (PRC_IS_REDIRECT(cmd))
1.19 mycroft 395: notify = in_rtchange, ip = 0;
1.18 mycroft 396: else if (cmd == PRC_HOSTDEAD)
1.19 mycroft 397: ip = 0;
1.23 cgd 398: else if (errno == 0)
1.27 christos 399: return NULL;
1.19 mycroft 400: if (ip) {
1.1 cgd 401: uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
1.34 mycroft 402: in_pcbnotify(&udbtable, satosin(sa)->sin_addr, uh->uh_dport,
403: ip->ip_src, uh->uh_sport, errno, notify);
1.19 mycroft 404: } else
1.34 mycroft 405: in_pcbnotifyall(&udbtable, satosin(sa)->sin_addr, errno,
406: notify);
1.27 christos 407: return NULL;
1.1 cgd 408: }
409:
1.7 mycroft 410: int
1.27 christos 411: #if __STDC__
412: udp_output(struct mbuf *m, ...)
413: #else
414: udp_output(m, va_alist)
415: struct mbuf *m;
416: va_dcl
417: #endif
418: {
1.1 cgd 419: register struct inpcb *inp;
420: register struct udpiphdr *ui;
421: register int len = m->m_pkthdr.len;
1.31 mycroft 422: int error = 0;
1.27 christos 423: va_list ap;
424:
425: va_start(ap, m);
426: inp = va_arg(ap, struct inpcb *);
427: va_end(ap);
1.1 cgd 428:
429: /*
430: * Calculate data length and get a mbuf
431: * for UDP and IP headers.
432: */
1.13 mycroft 433: M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
434: if (m == 0) {
435: error = ENOBUFS;
436: goto release;
437: }
1.1 cgd 438:
439: /*
440: * Fill in mbuf with extended UDP header
441: * and addresses and length put into network format.
442: */
443: ui = mtod(m, struct udpiphdr *);
1.25 cgd 444: bzero(ui->ui_x1, sizeof ui->ui_x1);
1.1 cgd 445: ui->ui_pr = IPPROTO_UDP;
1.15 cgd 446: ui->ui_len = htons((u_int16_t)len + sizeof (struct udphdr));
1.1 cgd 447: ui->ui_src = inp->inp_laddr;
448: ui->ui_dst = inp->inp_faddr;
449: ui->ui_sport = inp->inp_lport;
450: ui->ui_dport = inp->inp_fport;
451: ui->ui_ulen = ui->ui_len;
452:
453: /*
454: * Stuff checksum and output datagram.
455: */
456: ui->ui_sum = 0;
457: if (udpcksum) {
458: if ((ui->ui_sum = in_cksum(m, sizeof (struct udpiphdr) + len)) == 0)
459: ui->ui_sum = 0xffff;
460: }
461: ((struct ip *)ui)->ip_len = sizeof (struct udpiphdr) + len;
462: ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */
463: ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */
464: udpstat.udps_opackets++;
1.31 mycroft 465: return (ip_output(m, inp->inp_options, &inp->inp_route,
1.12 mycroft 466: inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST),
1.31 mycroft 467: inp->inp_moptions));
1.1 cgd 468:
469: release:
470: m_freem(m);
471: return (error);
472: }
473:
474: u_long udp_sendspace = 9216; /* really max datagram size */
475: u_long udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
476: /* 40 1K datagrams */
477:
478: /*ARGSUSED*/
1.7 mycroft 479: int
1.31 mycroft 480: udp_usrreq(so, req, m, nam, control, p)
1.1 cgd 481: struct socket *so;
482: int req;
1.31 mycroft 483: struct mbuf *m, *nam, *control;
1.30 mycroft 484: struct proc *p;
1.1 cgd 485: {
1.31 mycroft 486: register struct inpcb *inp;
1.1 cgd 487: int s;
1.31 mycroft 488: register int error = 0;
1.1 cgd 489:
490: if (req == PRU_CONTROL)
1.31 mycroft 491: return (in_control(so, (long)m, (caddr_t)nam,
1.30 mycroft 492: (struct ifnet *)control, p));
1.31 mycroft 493:
494: s = splsoftnet();
495: inp = sotoinpcb(so);
1.32 mycroft 496: #ifdef DIAGNOSTIC
497: if (req != PRU_SEND && req != PRU_SENDOOB && control)
498: panic("udp_usrreq: unexpected control mbuf");
499: #endif
1.31 mycroft 500: if (inp == 0 && req != PRU_ATTACH) {
501: error = EINVAL;
502: goto release;
503: }
504:
1.1 cgd 505: /*
506: * Note: need to block udp_input while changing
507: * the udp pcb queue and/or pcb addresses.
508: */
509: switch (req) {
510:
511: case PRU_ATTACH:
1.31 mycroft 512: if (inp != 0) {
513: error = EISCONN;
1.1 cgd 514: break;
515: }
1.31 mycroft 516: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
517: error = soreserve(so, udp_sendspace, udp_recvspace);
518: if (error)
519: break;
520: }
1.18 mycroft 521: error = in_pcballoc(so, &udbtable);
1.1 cgd 522: if (error)
523: break;
1.31 mycroft 524: inp = sotoinpcb(so);
525: inp->inp_ip.ip_ttl = ip_defttl;
1.1 cgd 526: break;
527:
528: case PRU_DETACH:
1.31 mycroft 529: in_pcbdetach(inp);
1.1 cgd 530: break;
531:
532: case PRU_BIND:
1.31 mycroft 533: error = in_pcbbind(inp, nam, p);
1.1 cgd 534: break;
535:
536: case PRU_LISTEN:
537: error = EOPNOTSUPP;
538: break;
539:
540: case PRU_CONNECT:
1.31 mycroft 541: error = in_pcbconnect(inp, nam);
542: if (error)
1.1 cgd 543: break;
1.31 mycroft 544: soisconnected(so);
1.1 cgd 545: break;
546:
547: case PRU_CONNECT2:
548: error = EOPNOTSUPP;
549: break;
550:
551: case PRU_DISCONNECT:
1.31 mycroft 552: /*soisdisconnected(so);*/
553: so->so_state &= ~SS_ISCONNECTED; /* XXX */
1.1 cgd 554: in_pcbdisconnect(inp);
1.34 mycroft 555: inp->inp_laddr = zeroin_addr; /* XXX */
1.35 ! mycroft 556: in_pcbstate(inp, INP_BOUND); /* XXX */
1.1 cgd 557: break;
558:
559: case PRU_SHUTDOWN:
560: socantsendmore(so);
561: break;
562:
1.31 mycroft 563: case PRU_RCVD:
564: error = EOPNOTSUPP;
1.1 cgd 565: break;
566:
1.31 mycroft 567: case PRU_SEND:
1.32 mycroft 568: if (control && control->m_len) {
569: m_freem(control);
570: m_freem(m);
571: error = EINVAL;
572: break;
573: }
1.31 mycroft 574: {
1.35 ! mycroft 575: struct in_addr laddr; /* XXX */
1.1 cgd 576:
1.31 mycroft 577: if (nam) {
1.35 ! mycroft 578: laddr = inp->inp_laddr; /* XXX */
1.31 mycroft 579: if ((so->so_state & SS_ISCONNECTED) != 0) {
580: error = EISCONN;
1.32 mycroft 581: goto die;
1.31 mycroft 582: }
583: error = in_pcbconnect(inp, nam);
1.32 mycroft 584: if (error) {
585: die:
586: m_freem(m);
1.31 mycroft 587: break;
1.32 mycroft 588: }
1.31 mycroft 589: } else {
590: if ((so->so_state & SS_ISCONNECTED) == 0) {
591: error = ENOTCONN;
1.32 mycroft 592: goto die;
1.31 mycroft 593: }
594: }
1.33 mycroft 595: error = udp_output(m, inp);
1.31 mycroft 596: if (nam) {
597: in_pcbdisconnect(inp);
1.35 ! mycroft 598: inp->inp_laddr = laddr; /* XXX */
! 599: in_pcbstate(inp, INP_BOUND); /* XXX */
1.31 mycroft 600: }
601: }
1.1 cgd 602: break;
603:
604: case PRU_SENSE:
605: /*
606: * stat: don't bother with a blocksize.
607: */
1.31 mycroft 608: splx(s);
1.1 cgd 609: return (0);
610:
1.31 mycroft 611: case PRU_RCVOOB:
612: error = EOPNOTSUPP;
613: break;
614:
1.1 cgd 615: case PRU_SENDOOB:
1.32 mycroft 616: m_freem(control);
1.31 mycroft 617: m_freem(m);
1.1 cgd 618: error = EOPNOTSUPP;
619: break;
620:
1.31 mycroft 621: case PRU_SOCKADDR:
622: in_setsockaddr(inp, nam);
623: break;
624:
625: case PRU_PEERADDR:
626: in_setpeeraddr(inp, nam);
627: break;
1.1 cgd 628:
629: default:
630: panic("udp_usrreq");
631: }
632:
633: release:
1.31 mycroft 634: splx(s);
1.1 cgd 635: return (error);
1.13 mycroft 636: }
637:
638: /*
639: * Sysctl for udp variables.
640: */
1.27 christos 641: int
1.13 mycroft 642: udp_sysctl(name, namelen, oldp, oldlenp, newp, newlen)
643: int *name;
644: u_int namelen;
645: void *oldp;
646: size_t *oldlenp;
647: void *newp;
648: size_t newlen;
649: {
650: /* All sysctl names at this level are terminal. */
651: if (namelen != 1)
652: return (ENOTDIR);
653:
654: switch (name[0]) {
655: case UDPCTL_CHECKSUM:
656: return (sysctl_int(oldp, oldlenp, newp, newlen, &udpcksum));
657: default:
658: return (ENOPROTOOPT);
659: }
660: /* NOTREACHED */
1.1 cgd 661: }
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