Annotation of src/sys/netinet/udp_usrreq.c, Revision 1.121
1.121 ! jonathan 1: /* $NetBSD: udp_usrreq.c,v 1.120 2004/05/01 02:20:43 matt Exp $ */
1.48 itojun 2:
3: /*
4: * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5: * All rights reserved.
1.94 itojun 6: *
1.48 itojun 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. Neither the name of the project nor the names of its contributors
16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
1.94 itojun 18: *
1.48 itojun 19: * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
1.14 cgd 31:
1.1 cgd 32: /*
1.44 thorpej 33: * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
1.13 mycroft 34: * The Regents of the University of California. All rights reserved.
1.1 cgd 35: *
36: * Redistribution and use in source and binary forms, with or without
37: * modification, are permitted provided that the following conditions
38: * are met:
39: * 1. Redistributions of source code must retain the above copyright
40: * notice, this list of conditions and the following disclaimer.
41: * 2. Redistributions in binary form must reproduce the above copyright
42: * notice, this list of conditions and the following disclaimer in the
43: * documentation and/or other materials provided with the distribution.
1.104 agc 44: * 3. Neither the name of the University nor the names of its contributors
1.1 cgd 45: * may be used to endorse or promote products derived from this software
46: * without specific prior written permission.
47: *
48: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
49: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
50: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
51: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
52: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
53: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
54: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
55: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
56: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
57: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58: * SUCH DAMAGE.
59: *
1.44 thorpej 60: * @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95
1.1 cgd 61: */
1.91 lukem 62:
63: #include <sys/cdefs.h>
1.121 ! jonathan 64: __KERNEL_RCSID(0, "$NetBSD: udp_usrreq.c,v 1.120 2004/05/01 02:20:43 matt Exp $");
1.50 thorpej 65:
1.77 soda 66: #include "opt_inet.h"
1.50 thorpej 67: #include "opt_ipsec.h"
1.78 thorpej 68: #include "opt_inet_csum.h"
1.64 ws 69: #include "opt_ipkdb.h"
1.101 martin 70: #include "opt_mbuftrace.h"
1.1 cgd 71:
1.5 mycroft 72: #include <sys/param.h>
73: #include <sys/malloc.h>
74: #include <sys/mbuf.h>
75: #include <sys/protosw.h>
76: #include <sys/socket.h>
77: #include <sys/socketvar.h>
1.13 mycroft 78: #include <sys/errno.h>
1.5 mycroft 79: #include <sys/stat.h>
1.27 christos 80: #include <sys/systm.h>
81: #include <sys/proc.h>
1.53 itojun 82: #include <sys/domain.h>
1.27 christos 83: #include <sys/sysctl.h>
1.1 cgd 84:
1.5 mycroft 85: #include <net/if.h>
86: #include <net/route.h>
1.1 cgd 87:
1.5 mycroft 88: #include <netinet/in.h>
89: #include <netinet/in_systm.h>
1.15 cgd 90: #include <netinet/in_var.h>
1.5 mycroft 91: #include <netinet/ip.h>
92: #include <netinet/in_pcb.h>
93: #include <netinet/ip_var.h>
94: #include <netinet/ip_icmp.h>
95: #include <netinet/udp.h>
96: #include <netinet/udp_var.h>
1.1 cgd 97:
1.53 itojun 98: #ifdef INET6
99: #include <netinet/ip6.h>
100: #include <netinet/icmp6.h>
101: #include <netinet6/ip6_var.h>
102: #include <netinet6/in6_pcb.h>
103: #include <netinet6/udp6_var.h>
104: #endif
105:
106: #ifndef INET6
107: /* always need ip6.h for IP6_EXTHDR_GET */
108: #include <netinet/ip6.h>
109: #endif
110:
1.76 itojun 111: #include "faith.h"
112: #if defined(NFAITH) && NFAITH > 0
113: #include <net/if_faith.h>
114: #endif
115:
1.27 christos 116: #include <machine/stdarg.h>
117:
1.105 jonathan 118: #ifdef FAST_IPSEC
119: #include <netipsec/ipsec.h>
1.121 ! jonathan 120: #include <netipsec/ipsec_var.h> /* XXX ipsecstat namespace */
1.105 jonathan 121: #ifdef INET6
122: #include <netipsec/ipsec6.h>
123: #endif
124: #endif /* FAST_IPSEC*/
125:
1.48 itojun 126: #ifdef IPSEC
127: #include <netinet6/ipsec.h>
128: #include <netkey/key.h>
129: #endif /*IPSEC*/
130:
1.64 ws 131: #ifdef IPKDB
132: #include <ipkdb/ipkdb.h>
133: #endif
134:
1.8 mycroft 135: /*
136: * UDP protocol implementation.
137: * Per RFC 768, August, 1980.
138: */
139: #ifndef COMPAT_42
140: int udpcksum = 1;
141: #else
142: int udpcksum = 0; /* XXX */
143: #endif
1.93 matt 144:
145: struct inpcbtable udbtable;
146: struct udpstat udpstat;
1.8 mycroft 147:
1.72 itojun 148: #ifdef INET
1.119 matt 149: static void udp4_sendup (struct mbuf *, int, struct sockaddr *,
150: struct socket *);
151: static int udp4_realinput (struct sockaddr_in *, struct sockaddr_in *,
152: struct mbuf *, int);
1.72 itojun 153: #endif
1.53 itojun 154: #ifdef INET6
1.119 matt 155: static void udp6_sendup (struct mbuf *, int, struct sockaddr *,
156: struct socket *);
157: static int udp6_realinput (int, struct sockaddr_in6 *,
158: struct sockaddr_in6 *, struct mbuf *, int);
1.53 itojun 159: #endif
1.72 itojun 160: #ifdef INET
1.119 matt 161: static void udp_notify (struct inpcb *, int);
1.72 itojun 162: #endif
1.7 mycroft 163:
1.26 mycroft 164: #ifndef UDBHASHSIZE
165: #define UDBHASHSIZE 128
166: #endif
167: int udbhashsize = UDBHASHSIZE;
168:
1.98 matt 169: #ifdef MBUFTRACE
170: struct mowner udp_mowner = { "udp" };
171: struct mowner udp_rx_mowner = { "udp", "rx" };
172: struct mowner udp_tx_mowner = { "udp", "tx" };
173: #endif
174:
1.78 thorpej 175: #ifdef UDP_CSUM_COUNTERS
176: #include <sys/device.h>
177:
178: struct evcnt udp_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
179: NULL, "udp", "hwcsum bad");
180: struct evcnt udp_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
181: NULL, "udp", "hwcsum ok");
182: struct evcnt udp_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
183: NULL, "udp", "hwcsum data");
184: struct evcnt udp_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
185: NULL, "udp", "swcsum");
186:
187: #define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++
188:
1.120 matt 189: EVCNT_ATTACH_STATIC(udp_hwcsum_bad);
190: EVCNT_ATTACH_STATIC(udp_hwcsum_ok);
191: EVCNT_ATTACH_STATIC(udp_hwcsum_data);
192: EVCNT_ATTACH_STATIC(udp_swcsum);
193:
1.78 thorpej 194: #else
195:
196: #define UDP_CSUM_COUNTER_INCR(ev) /* nothing */
197:
198: #endif /* UDP_CSUM_COUNTERS */
199:
1.7 mycroft 200: void
1.119 matt 201: udp_init(void)
1.1 cgd 202: {
1.18 mycroft 203:
1.35 mycroft 204: in_pcbinit(&udbtable, udbhashsize, udbhashsize);
1.78 thorpej 205:
1.98 matt 206: MOWNER_ATTACH(&udp_tx_mowner);
207: MOWNER_ATTACH(&udp_rx_mowner);
208: MOWNER_ATTACH(&udp_mowner);
1.1 cgd 209: }
210:
1.72 itojun 211: #ifdef INET
1.7 mycroft 212: void
1.27 christos 213: udp_input(struct mbuf *m, ...)
1.1 cgd 214: {
1.53 itojun 215: va_list ap;
216: struct sockaddr_in src, dst;
217: struct ip *ip;
218: struct udphdr *uh;
1.97 simonb 219: int iphlen;
1.53 itojun 220: int len;
221: int n;
1.96 itojun 222: u_int16_t ip_len;
1.53 itojun 223:
224: va_start(ap, m);
225: iphlen = va_arg(ap, int);
1.97 simonb 226: (void)va_arg(ap, int); /* ignore value, advance ap */
1.53 itojun 227: va_end(ap);
228:
1.98 matt 229: MCLAIM(m, &udp_rx_mowner);
1.53 itojun 230: udpstat.udps_ipackets++;
231:
232: /*
233: * Get IP and UDP header together in first mbuf.
234: */
235: ip = mtod(m, struct ip *);
236: IP6_EXTHDR_GET(uh, struct udphdr *, m, iphlen, sizeof(struct udphdr));
237: if (uh == NULL) {
238: udpstat.udps_hdrops++;
239: return;
240: }
1.95 thorpej 241: KASSERT(UDP_HDR_ALIGNED_P(uh));
1.53 itojun 242:
1.57 itojun 243: /* destination port of 0 is illegal, based on RFC768. */
244: if (uh->uh_dport == 0)
245: goto bad;
246:
1.53 itojun 247: /*
248: * Make mbuf data length reflect UDP length.
249: * If not enough data to reflect UDP length, drop.
250: */
1.96 itojun 251: ip_len = ntohs(ip->ip_len);
1.53 itojun 252: len = ntohs((u_int16_t)uh->uh_ulen);
1.96 itojun 253: if (ip_len != iphlen + len) {
254: if (ip_len < iphlen + len || len < sizeof(struct udphdr)) {
1.53 itojun 255: udpstat.udps_badlen++;
256: goto bad;
257: }
1.96 itojun 258: m_adj(m, iphlen + len - ip_len);
1.53 itojun 259: }
260:
261: /*
262: * Checksum extended UDP header and data.
263: */
264: if (uh->uh_sum) {
1.78 thorpej 265: switch (m->m_pkthdr.csum_flags &
1.112 enami 266: ((m->m_pkthdr.rcvif->if_csum_flags_rx & M_CSUM_UDPv4) |
267: M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) {
1.78 thorpej 268: case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD:
269: UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad);
270: goto badcsum;
271:
1.106 jonathan 272: case M_CSUM_UDPv4|M_CSUM_DATA: {
273: u_int32_t hw_csum = m->m_pkthdr.csum_data;
1.78 thorpej 274: UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data);
1.106 jonathan 275: if (m->m_pkthdr.csum_flags & M_CSUM_NO_PSEUDOHDR)
1.112 enami 276: hw_csum = in_cksum_phdr(ip->ip_src.s_addr,
277: ip->ip_dst.s_addr,
1.115 drochner 278: htons(hw_csum + len + IPPROTO_UDP));
1.106 jonathan 279: if ((hw_csum ^ 0xffff) != 0)
1.78 thorpej 280: goto badcsum;
281: break;
1.106 jonathan 282: }
1.78 thorpej 283:
284: case M_CSUM_UDPv4:
285: /* Checksum was okay. */
286: UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok);
287: break;
288:
289: default:
290: /* Need to compute it ourselves. */
291: UDP_CSUM_COUNTER_INCR(&udp_swcsum);
292: if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0)
293: goto badcsum;
294: break;
1.53 itojun 295: }
296: }
297:
298: /* construct source and dst sockaddrs. */
299: bzero(&src, sizeof(src));
300: src.sin_family = AF_INET;
301: src.sin_len = sizeof(struct sockaddr_in);
302: bcopy(&ip->ip_src, &src.sin_addr, sizeof(src.sin_addr));
303: src.sin_port = uh->uh_sport;
304: bzero(&dst, sizeof(dst));
305: dst.sin_family = AF_INET;
306: dst.sin_len = sizeof(struct sockaddr_in);
307: bcopy(&ip->ip_dst, &dst.sin_addr, sizeof(dst.sin_addr));
308: dst.sin_port = uh->uh_dport;
309:
310: n = udp4_realinput(&src, &dst, m, iphlen);
311: #ifdef INET6
312: if (IN_MULTICAST(ip->ip_dst.s_addr) || n == 0) {
313: struct sockaddr_in6 src6, dst6;
314:
315: bzero(&src6, sizeof(src6));
316: src6.sin6_family = AF_INET6;
317: src6.sin6_len = sizeof(struct sockaddr_in6);
318: src6.sin6_addr.s6_addr[10] = src6.sin6_addr.s6_addr[11] = 0xff;
319: bcopy(&ip->ip_src, &src6.sin6_addr.s6_addr[12],
320: sizeof(ip->ip_src));
321: src6.sin6_port = uh->uh_sport;
322: bzero(&dst6, sizeof(dst6));
323: dst6.sin6_family = AF_INET6;
324: dst6.sin6_len = sizeof(struct sockaddr_in6);
325: dst6.sin6_addr.s6_addr[10] = dst6.sin6_addr.s6_addr[11] = 0xff;
326: bcopy(&ip->ip_dst, &dst6.sin6_addr.s6_addr[12],
327: sizeof(ip->ip_dst));
328: dst6.sin6_port = uh->uh_dport;
329:
330: n += udp6_realinput(AF_INET, &src6, &dst6, m, iphlen);
331: }
332: #endif
333:
334: if (n == 0) {
335: if (m->m_flags & (M_BCAST | M_MCAST)) {
336: udpstat.udps_noportbcast++;
337: goto bad;
338: }
1.61 itojun 339: udpstat.udps_noport++;
1.64 ws 340: #ifdef IPKDB
1.53 itojun 341: if (checkipkdb(&ip->ip_src, uh->uh_sport, uh->uh_dport,
342: m, iphlen + sizeof(struct udphdr),
343: m->m_pkthdr.len - iphlen - sizeof(struct udphdr))) {
344: /*
345: * It was a debugger connect packet,
346: * just drop it now
347: */
348: goto bad;
349: }
350: #endif
351: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
352: m = NULL;
353: }
354:
355: bad:
356: if (m)
357: m_freem(m);
1.78 thorpej 358: return;
359:
360: badcsum:
361: m_freem(m);
362: udpstat.udps_badsum++;
1.53 itojun 363: }
1.72 itojun 364: #endif
1.53 itojun 365:
366: #ifdef INET6
367: int
1.119 matt 368: udp6_input(struct mbuf **mp, int *offp, int proto)
1.53 itojun 369: {
370: struct mbuf *m = *mp;
371: int off = *offp;
372: struct sockaddr_in6 src, dst;
373: struct ip6_hdr *ip6;
374: struct udphdr *uh;
375: u_int32_t plen, ulen;
376:
1.76 itojun 377: ip6 = mtod(m, struct ip6_hdr *);
378:
1.53 itojun 379: #if defined(NFAITH) && 0 < NFAITH
1.76 itojun 380: if (faithprefix(&ip6->ip6_dst)) {
381: /* send icmp6 host unreach? */
382: m_freem(m);
383: return IPPROTO_DONE;
1.53 itojun 384: }
385: #endif
386:
387: udp6stat.udp6s_ipackets++;
388:
389: /* check for jumbogram is done in ip6_input. we can trust pkthdr.len */
390: plen = m->m_pkthdr.len - off;
391: IP6_EXTHDR_GET(uh, struct udphdr *, m, off, sizeof(struct udphdr));
392: if (uh == NULL) {
393: ip6stat.ip6s_tooshort++;
394: return IPPROTO_DONE;
395: }
1.95 thorpej 396: KASSERT(UDP_HDR_ALIGNED_P(uh));
1.53 itojun 397: ulen = ntohs((u_short)uh->uh_ulen);
1.69 itojun 398: /*
399: * RFC2675 section 4: jumbograms will have 0 in the UDP header field,
400: * iff payload length > 0xffff.
401: */
1.53 itojun 402: if (ulen == 0 && plen > 0xffff)
403: ulen = plen;
404:
405: if (plen != ulen) {
406: udp6stat.udp6s_badlen++;
1.54 itojun 407: goto bad;
408: }
409:
1.57 itojun 410: /* destination port of 0 is illegal, based on RFC768. */
411: if (uh->uh_dport == 0)
412: goto bad;
413:
1.54 itojun 414: /* Be proactive about malicious use of IPv4 mapped address */
415: if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) ||
416: IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) {
417: /* XXX stat */
1.53 itojun 418: goto bad;
419: }
420:
421: /*
422: * Checksum extended UDP header and data.
423: */
1.117 itojun 424: if (uh->uh_sum == 0) {
1.53 itojun 425: udp6stat.udp6s_nosum++;
1.117 itojun 426: goto bad;
1.118 itojun 427: }
428: if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) {
1.53 itojun 429: udp6stat.udp6s_badsum++;
430: goto bad;
431: }
432:
433: /*
434: * Construct source and dst sockaddrs.
435: * Note that ifindex (s6_addr16[1]) is already filled.
436: */
437: bzero(&src, sizeof(src));
438: src.sin6_family = AF_INET6;
439: src.sin6_len = sizeof(struct sockaddr_in6);
1.69 itojun 440: /* KAME hack: recover scopeid */
441: (void)in6_recoverscope(&src, &ip6->ip6_src, m->m_pkthdr.rcvif);
1.53 itojun 442: src.sin6_port = uh->uh_sport;
443: bzero(&dst, sizeof(dst));
444: dst.sin6_family = AF_INET6;
445: dst.sin6_len = sizeof(struct sockaddr_in6);
1.69 itojun 446: /* KAME hack: recover scopeid */
447: (void)in6_recoverscope(&dst, &ip6->ip6_dst, m->m_pkthdr.rcvif);
1.53 itojun 448: dst.sin6_port = uh->uh_dport;
449:
450: if (udp6_realinput(AF_INET6, &src, &dst, m, off) == 0) {
451: if (m->m_flags & M_MCAST) {
452: udp6stat.udp6s_noportmcast++;
453: goto bad;
454: }
1.61 itojun 455: udp6stat.udp6s_noport++;
1.53 itojun 456: icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0);
457: m = NULL;
458: }
459:
460: bad:
461: if (m)
462: m_freem(m);
463: return IPPROTO_DONE;
464: }
465: #endif
466:
1.72 itojun 467: #ifdef INET
1.53 itojun 468: static void
1.119 matt 469: udp4_sendup(struct mbuf *m, int off /* offset of data portion */,
470: struct sockaddr *src, struct socket *so)
1.53 itojun 471: {
472: struct mbuf *opts = NULL;
473: struct mbuf *n;
474: struct inpcb *inp = NULL;
475:
476: if (!so)
477: return;
478: switch (so->so_proto->pr_domain->dom_family) {
479: case AF_INET:
480: inp = sotoinpcb(so);
481: break;
482: #ifdef INET6
483: case AF_INET6:
484: break;
485: #endif
486: default:
487: return;
488: }
489:
1.105 jonathan 490: #if defined(IPSEC) || defined(FAST_IPSEC)
1.53 itojun 491: /* check AH/ESP integrity. */
492: if (so != NULL && ipsec4_in_reject_so(m, so)) {
493: ipsecstat.in_polvio++;
1.110 itojun 494: if ((n = m_copy(m, 0, M_COPYALL)) != NULL)
495: icmp_error(n, ICMP_UNREACH, ICMP_UNREACH_ADMIN_PROHIBIT,
496: 0, 0);
1.53 itojun 497: return;
498: }
499: #endif /*IPSEC*/
500:
501: if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
502: if (inp && (inp->inp_flags & INP_CONTROLOPTS
503: || so->so_options & SO_TIMESTAMP)) {
504: struct ip *ip = mtod(n, struct ip *);
505: ip_savecontrol(inp, &opts, ip, n);
506: }
507:
508: m_adj(n, off);
509: if (sbappendaddr(&so->so_rcv, src, n,
510: opts) == 0) {
511: m_freem(n);
512: if (opts)
513: m_freem(opts);
1.81 enami 514: udpstat.udps_fullsock++;
1.53 itojun 515: } else
516: sorwakeup(so);
517: }
518: }
1.72 itojun 519: #endif
1.53 itojun 520:
521: #ifdef INET6
522: static void
1.119 matt 523: udp6_sendup(struct mbuf *m, int off /* offset of data portion */,
524: struct sockaddr *src, struct socket *so)
1.53 itojun 525: {
526: struct mbuf *opts = NULL;
527: struct mbuf *n;
528: struct in6pcb *in6p = NULL;
529:
530: if (!so)
531: return;
532: if (so->so_proto->pr_domain->dom_family != AF_INET6)
533: return;
534: in6p = sotoin6pcb(so);
535:
1.105 jonathan 536: #if defined(IPSEC) || defined(FAST_IPSEC)
1.53 itojun 537: /* check AH/ESP integrity. */
538: if (so != NULL && ipsec6_in_reject_so(m, so)) {
539: ipsec6stat.in_polvio++;
1.111 mycroft 540: if ((n = m_copy(m, 0, M_COPYALL)) != NULL)
1.110 itojun 541: icmp6_error(n, ICMP6_DST_UNREACH,
542: ICMP6_DST_UNREACH_ADMIN, 0);
1.53 itojun 543: return;
544: }
545: #endif /*IPSEC*/
546:
547: if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
548: if (in6p && (in6p->in6p_flags & IN6P_CONTROLOPTS
549: || in6p->in6p_socket->so_options & SO_TIMESTAMP)) {
550: struct ip6_hdr *ip6 = mtod(n, struct ip6_hdr *);
551: ip6_savecontrol(in6p, &opts, ip6, n);
552: }
553:
554: m_adj(n, off);
555: if (sbappendaddr(&so->so_rcv, src, n, opts) == 0) {
556: m_freem(n);
557: if (opts)
558: m_freem(opts);
559: udp6stat.udp6s_fullsock++;
560: } else
561: sorwakeup(so);
562: }
563: }
564: #endif
565:
1.72 itojun 566: #ifdef INET
1.53 itojun 567: static int
1.119 matt 568: udp4_realinput(struct sockaddr_in *src, struct sockaddr_in *dst,
569: struct mbuf *m, int off /* offset of udphdr */)
1.53 itojun 570: {
571: u_int16_t *sport, *dport;
572: int rcvcnt;
573: struct in_addr *src4, *dst4;
1.109 itojun 574: struct inpcb_hdr *inph;
1.53 itojun 575: struct inpcb *inp;
576:
577: rcvcnt = 0;
578: off += sizeof(struct udphdr); /* now, offset of payload */
579:
580: if (src->sin_family != AF_INET || dst->sin_family != AF_INET)
581: goto bad;
582:
583: src4 = &src->sin_addr;
584: sport = &src->sin_port;
585: dst4 = &dst->sin_addr;
586: dport = &dst->sin_port;
587:
1.73 itojun 588: if (IN_MULTICAST(dst4->s_addr) ||
1.53 itojun 589: in_broadcast(*dst4, m->m_pkthdr.rcvif)) {
590: /*
591: * Deliver a multicast or broadcast datagram to *all* sockets
592: * for which the local and remote addresses and ports match
593: * those of the incoming datagram. This allows more than
594: * one process to receive multi/broadcasts on the same port.
595: * (This really ought to be done for unicast datagrams as
596: * well, but that would cause problems with existing
597: * applications that open both address-specific sockets and
598: * a wildcard socket listening to the same port -- they would
599: * end up receiving duplicates of every unicast datagram.
600: * Those applications open the multiple sockets to overcome an
601: * inadequacy of the UDP socket interface, but for backwards
602: * compatibility we avoid the problem here rather than
603: * fixing the interface. Maybe 4.5BSD will remedy this?)
604: */
605:
606: /*
1.92 itojun 607: * KAME note: traditionally we dropped udpiphdr from mbuf here.
1.71 itojun 608: * we need udpiphdr for IPsec processing so we do that later.
1.53 itojun 609: */
610: /*
611: * Locate pcb(s) for datagram.
612: */
1.109 itojun 613: CIRCLEQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) {
614: inp = (struct inpcb *)inph;
615: if (inp->inp_af != AF_INET)
616: continue;
617:
1.53 itojun 618: if (inp->inp_lport != *dport)
619: continue;
620: if (!in_nullhost(inp->inp_laddr)) {
621: if (!in_hosteq(inp->inp_laddr, *dst4))
622: continue;
623: }
624: if (!in_nullhost(inp->inp_faddr)) {
625: if (!in_hosteq(inp->inp_faddr, *src4) ||
626: inp->inp_fport != *sport)
627: continue;
628: }
629:
630: udp4_sendup(m, off, (struct sockaddr *)src,
631: inp->inp_socket);
632: rcvcnt++;
633:
634: /*
635: * Don't look for additional matches if this one does
636: * not have either the SO_REUSEPORT or SO_REUSEADDR
637: * socket options set. This heuristic avoids searching
638: * through all pcbs in the common case of a non-shared
639: * port. It assumes that an application will never
640: * clear these options after setting them.
641: */
642: if ((inp->inp_socket->so_options &
643: (SO_REUSEPORT|SO_REUSEADDR)) == 0)
644: break;
645: }
646: } else {
647: /*
648: * Locate pcb for datagram.
649: */
650: inp = in_pcblookup_connect(&udbtable, *src4, *sport, *dst4, *dport);
651: if (inp == 0) {
652: ++udpstat.udps_pcbhashmiss;
653: inp = in_pcblookup_bind(&udbtable, *dst4, *dport);
1.82 itojun 654: if (inp == 0)
1.53 itojun 655: return rcvcnt;
656: }
657:
658: udp4_sendup(m, off, (struct sockaddr *)src, inp->inp_socket);
659: rcvcnt++;
660: }
661:
662: bad:
663: return rcvcnt;
664: }
1.72 itojun 665: #endif
1.53 itojun 666:
667: #ifdef INET6
668: static int
1.119 matt 669: udp6_realinput(int af, struct sockaddr_in6 *src, struct sockaddr_in6 *dst,
670: struct mbuf *m, int off)
1.53 itojun 671: {
1.79 itojun 672: u_int16_t sport, dport;
1.53 itojun 673: int rcvcnt;
1.79 itojun 674: struct in6_addr src6, dst6;
675: const struct in_addr *dst4;
1.109 itojun 676: struct inpcb_hdr *inph;
1.53 itojun 677: struct in6pcb *in6p;
678:
679: rcvcnt = 0;
680: off += sizeof(struct udphdr); /* now, offset of payload */
681:
682: if (af != AF_INET && af != AF_INET6)
683: goto bad;
684: if (src->sin6_family != AF_INET6 || dst->sin6_family != AF_INET6)
685: goto bad;
686:
1.79 itojun 687: in6_embedscope(&src6, src, NULL, NULL);
688: sport = src->sin6_port;
689: in6_embedscope(&dst6, dst, NULL, NULL);
690: dport = dst->sin6_port;
1.88 itojun 691: dst4 = (struct in_addr *)&dst->sin6_addr.s6_addr[12];
1.53 itojun 692:
1.79 itojun 693: if (IN6_IS_ADDR_MULTICAST(&dst6) ||
694: (af == AF_INET && IN_MULTICAST(dst4->s_addr))) {
1.53 itojun 695: /*
696: * Deliver a multicast or broadcast datagram to *all* sockets
697: * for which the local and remote addresses and ports match
698: * those of the incoming datagram. This allows more than
699: * one process to receive multi/broadcasts on the same port.
700: * (This really ought to be done for unicast datagrams as
701: * well, but that would cause problems with existing
702: * applications that open both address-specific sockets and
703: * a wildcard socket listening to the same port -- they would
704: * end up receiving duplicates of every unicast datagram.
705: * Those applications open the multiple sockets to overcome an
706: * inadequacy of the UDP socket interface, but for backwards
707: * compatibility we avoid the problem here rather than
708: * fixing the interface. Maybe 4.5BSD will remedy this?)
709: */
710:
711: /*
1.92 itojun 712: * KAME note: traditionally we dropped udpiphdr from mbuf here.
1.71 itojun 713: * we need udpiphdr for IPsec processing so we do that later.
1.53 itojun 714: */
715: /*
716: * Locate pcb(s) for datagram.
717: */
1.109 itojun 718: CIRCLEQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) {
719: in6p = (struct in6pcb *)inph;
720: if (in6p->in6p_af != AF_INET6)
721: continue;
722:
1.79 itojun 723: if (in6p->in6p_lport != dport)
1.53 itojun 724: continue;
725: if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) {
1.90 itojun 726: if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &dst6))
1.53 itojun 727: continue;
1.92 itojun 728: } else {
1.79 itojun 729: if (IN6_IS_ADDR_V4MAPPED(&dst6) &&
1.85 itojun 730: (in6p->in6p_flags & IN6P_IPV6_V6ONLY))
1.55 itojun 731: continue;
732: }
1.53 itojun 733: if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
1.79 itojun 734: if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr,
735: &src6) || in6p->in6p_fport != sport)
1.53 itojun 736: continue;
1.92 itojun 737: } else {
1.79 itojun 738: if (IN6_IS_ADDR_V4MAPPED(&src6) &&
1.85 itojun 739: (in6p->in6p_flags & IN6P_IPV6_V6ONLY))
1.55 itojun 740: continue;
741: }
1.53 itojun 742:
743: udp6_sendup(m, off, (struct sockaddr *)src,
744: in6p->in6p_socket);
745: rcvcnt++;
746:
747: /*
748: * Don't look for additional matches if this one does
749: * not have either the SO_REUSEPORT or SO_REUSEADDR
750: * socket options set. This heuristic avoids searching
751: * through all pcbs in the common case of a non-shared
752: * port. It assumes that an application will never
753: * clear these options after setting them.
754: */
755: if ((in6p->in6p_socket->so_options &
756: (SO_REUSEPORT|SO_REUSEADDR)) == 0)
757: break;
758: }
759: } else {
760: /*
761: * Locate pcb for datagram.
762: */
1.109 itojun 763: in6p = in6_pcblookup_connect(&udbtable, &src6, sport,
1.79 itojun 764: &dst6, dport, 0);
1.53 itojun 765: if (in6p == 0) {
766: ++udpstat.udps_pcbhashmiss;
1.109 itojun 767: in6p = in6_pcblookup_bind(&udbtable, &dst6, dport, 0);
1.82 itojun 768: if (in6p == 0)
1.53 itojun 769: return rcvcnt;
770: }
771:
772: udp6_sendup(m, off, (struct sockaddr *)src, in6p->in6p_socket);
773: rcvcnt++;
774: }
775:
776: bad:
777: return rcvcnt;
778: }
779: #endif
1.1 cgd 780:
1.72 itojun 781: #ifdef INET
1.1 cgd 782: /*
783: * Notify a udp user of an asynchronous error;
784: * just wake up so that he can collect error status.
785: */
1.7 mycroft 786: static void
1.119 matt 787: udp_notify(struct inpcb *inp, int errno)
1.1 cgd 788: {
789: inp->inp_socket->so_error = errno;
790: sorwakeup(inp->inp_socket);
791: sowwakeup(inp->inp_socket);
792: }
793:
1.27 christos 794: void *
1.119 matt 795: udp_ctlinput(int cmd, struct sockaddr *sa, void *v)
1.1 cgd 796: {
1.66 augustss 797: struct ip *ip = v;
798: struct udphdr *uh;
1.119 matt 799: void (*notify)(struct inpcb *, int) = udp_notify;
1.21 mycroft 800: int errno;
1.1 cgd 801:
1.53 itojun 802: if (sa->sa_family != AF_INET
803: || sa->sa_len != sizeof(struct sockaddr_in))
1.51 itojun 804: return NULL;
1.20 mycroft 805: if ((unsigned)cmd >= PRC_NCMDS)
1.27 christos 806: return NULL;
1.20 mycroft 807: errno = inetctlerrmap[cmd];
1.18 mycroft 808: if (PRC_IS_REDIRECT(cmd))
1.19 mycroft 809: notify = in_rtchange, ip = 0;
1.18 mycroft 810: else if (cmd == PRC_HOSTDEAD)
1.19 mycroft 811: ip = 0;
1.23 cgd 812: else if (errno == 0)
1.27 christos 813: return NULL;
1.19 mycroft 814: if (ip) {
1.1 cgd 815: uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
1.34 mycroft 816: in_pcbnotify(&udbtable, satosin(sa)->sin_addr, uh->uh_dport,
817: ip->ip_src, uh->uh_sport, errno, notify);
1.53 itojun 818:
819: /* XXX mapped address case */
1.19 mycroft 820: } else
1.34 mycroft 821: in_pcbnotifyall(&udbtable, satosin(sa)->sin_addr, errno,
822: notify);
1.27 christos 823: return NULL;
1.1 cgd 824: }
825:
1.7 mycroft 826: int
1.27 christos 827: udp_output(struct mbuf *m, ...)
828: {
1.66 augustss 829: struct inpcb *inp;
830: struct udpiphdr *ui;
831: int len = m->m_pkthdr.len;
1.31 mycroft 832: int error = 0;
1.27 christos 833: va_list ap;
834:
1.98 matt 835: MCLAIM(m, &udp_tx_mowner);
1.27 christos 836: va_start(ap, m);
837: inp = va_arg(ap, struct inpcb *);
838: va_end(ap);
1.1 cgd 839:
840: /*
841: * Calculate data length and get a mbuf
842: * for UDP and IP headers.
843: */
1.13 mycroft 844: M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
845: if (m == 0) {
846: error = ENOBUFS;
1.39 thorpej 847: goto release;
848: }
849:
850: /*
851: * Compute the packet length of the IP header, and
852: * punt if the length looks bogus.
853: */
1.96 itojun 854: if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) {
1.39 thorpej 855: error = EMSGSIZE;
1.13 mycroft 856: goto release;
857: }
1.1 cgd 858:
859: /*
860: * Fill in mbuf with extended UDP header
861: * and addresses and length put into network format.
862: */
863: ui = mtod(m, struct udpiphdr *);
864: ui->ui_pr = IPPROTO_UDP;
865: ui->ui_src = inp->inp_laddr;
866: ui->ui_dst = inp->inp_faddr;
867: ui->ui_sport = inp->inp_lport;
868: ui->ui_dport = inp->inp_fport;
1.78 thorpej 869: ui->ui_ulen = htons((u_int16_t)len + sizeof(struct udphdr));
1.1 cgd 870:
871: /*
1.78 thorpej 872: * Set up checksum and output datagram.
1.1 cgd 873: */
874: if (udpcksum) {
1.78 thorpej 875: /*
876: * XXX Cache pseudo-header checksum part for
877: * XXX "connected" UDP sockets.
878: */
879: ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr,
880: ui->ui_dst.s_addr, htons((u_int16_t)len +
881: sizeof(struct udphdr) + IPPROTO_UDP));
882: m->m_pkthdr.csum_flags = M_CSUM_UDPv4;
883: m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
884: } else
885: ui->ui_sum = 0;
1.96 itojun 886: ((struct ip *)ui)->ip_len = htons(sizeof (struct udpiphdr) + len);
1.1 cgd 887: ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */
888: ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */
889: udpstat.udps_opackets++;
1.48 itojun 890:
1.31 mycroft 891: return (ip_output(m, inp->inp_options, &inp->inp_route,
1.12 mycroft 892: inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST),
1.107 itojun 893: inp->inp_moptions, inp->inp_socket));
1.1 cgd 894:
895: release:
896: m_freem(m);
897: return (error);
898: }
899:
1.42 thorpej 900: int udp_sendspace = 9216; /* really max datagram size */
901: int udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
1.1 cgd 902: /* 40 1K datagrams */
903:
904: /*ARGSUSED*/
1.7 mycroft 905: int
1.119 matt 906: udp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
907: struct mbuf *control, struct proc *p)
1.1 cgd 908: {
1.66 augustss 909: struct inpcb *inp;
1.1 cgd 910: int s;
1.66 augustss 911: int error = 0;
1.1 cgd 912:
913: if (req == PRU_CONTROL)
1.31 mycroft 914: return (in_control(so, (long)m, (caddr_t)nam,
1.30 mycroft 915: (struct ifnet *)control, p));
1.59 thorpej 916:
1.60 thorpej 917: if (req == PRU_PURGEIF) {
1.80 itojun 918: in_pcbpurgeif0(&udbtable, (struct ifnet *)control);
1.60 thorpej 919: in_purgeif((struct ifnet *)control);
920: in_pcbpurgeif(&udbtable, (struct ifnet *)control);
1.59 thorpej 921: return (0);
922: }
1.31 mycroft 923:
924: s = splsoftnet();
925: inp = sotoinpcb(so);
1.32 mycroft 926: #ifdef DIAGNOSTIC
927: if (req != PRU_SEND && req != PRU_SENDOOB && control)
928: panic("udp_usrreq: unexpected control mbuf");
929: #endif
1.31 mycroft 930: if (inp == 0 && req != PRU_ATTACH) {
931: error = EINVAL;
932: goto release;
933: }
934:
1.1 cgd 935: /*
936: * Note: need to block udp_input while changing
937: * the udp pcb queue and/or pcb addresses.
938: */
939: switch (req) {
940:
941: case PRU_ATTACH:
1.31 mycroft 942: if (inp != 0) {
943: error = EISCONN;
1.1 cgd 944: break;
945: }
1.98 matt 946: #ifdef MBUFTRACE
947: so->so_mowner = &udp_mowner;
948: so->so_rcv.sb_mowner = &udp_rx_mowner;
949: so->so_snd.sb_mowner = &udp_tx_mowner;
950: #endif
1.31 mycroft 951: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
952: error = soreserve(so, udp_sendspace, udp_recvspace);
953: if (error)
954: break;
955: }
1.18 mycroft 956: error = in_pcballoc(so, &udbtable);
1.1 cgd 957: if (error)
958: break;
1.31 mycroft 959: inp = sotoinpcb(so);
960: inp->inp_ip.ip_ttl = ip_defttl;
1.1 cgd 961: break;
962:
963: case PRU_DETACH:
1.31 mycroft 964: in_pcbdetach(inp);
1.1 cgd 965: break;
966:
967: case PRU_BIND:
1.31 mycroft 968: error = in_pcbbind(inp, nam, p);
1.1 cgd 969: break;
970:
971: case PRU_LISTEN:
972: error = EOPNOTSUPP;
973: break;
974:
975: case PRU_CONNECT:
1.31 mycroft 976: error = in_pcbconnect(inp, nam);
977: if (error)
1.1 cgd 978: break;
1.31 mycroft 979: soisconnected(so);
1.1 cgd 980: break;
981:
982: case PRU_CONNECT2:
983: error = EOPNOTSUPP;
984: break;
985:
986: case PRU_DISCONNECT:
1.31 mycroft 987: /*soisdisconnected(so);*/
988: so->so_state &= ~SS_ISCONNECTED; /* XXX */
1.1 cgd 989: in_pcbdisconnect(inp);
1.34 mycroft 990: inp->inp_laddr = zeroin_addr; /* XXX */
1.35 mycroft 991: in_pcbstate(inp, INP_BOUND); /* XXX */
1.1 cgd 992: break;
993:
994: case PRU_SHUTDOWN:
995: socantsendmore(so);
996: break;
997:
1.31 mycroft 998: case PRU_RCVD:
999: error = EOPNOTSUPP;
1.1 cgd 1000: break;
1001:
1.31 mycroft 1002: case PRU_SEND:
1.32 mycroft 1003: if (control && control->m_len) {
1004: m_freem(control);
1005: m_freem(m);
1006: error = EINVAL;
1007: break;
1008: }
1.31 mycroft 1009: {
1.35 mycroft 1010: struct in_addr laddr; /* XXX */
1.1 cgd 1011:
1.31 mycroft 1012: if (nam) {
1.35 mycroft 1013: laddr = inp->inp_laddr; /* XXX */
1.31 mycroft 1014: if ((so->so_state & SS_ISCONNECTED) != 0) {
1015: error = EISCONN;
1.32 mycroft 1016: goto die;
1.31 mycroft 1017: }
1018: error = in_pcbconnect(inp, nam);
1.100 matt 1019: if (error)
1020: goto die;
1.31 mycroft 1021: } else {
1022: if ((so->so_state & SS_ISCONNECTED) == 0) {
1023: error = ENOTCONN;
1.32 mycroft 1024: goto die;
1.31 mycroft 1025: }
1026: }
1.33 mycroft 1027: error = udp_output(m, inp);
1.100 matt 1028: m = NULL;
1.31 mycroft 1029: if (nam) {
1030: in_pcbdisconnect(inp);
1.35 mycroft 1031: inp->inp_laddr = laddr; /* XXX */
1032: in_pcbstate(inp, INP_BOUND); /* XXX */
1.31 mycroft 1033: }
1.100 matt 1034: die:
1035: if (m)
1036: m_freem(m);
1.31 mycroft 1037: }
1.1 cgd 1038: break;
1039:
1040: case PRU_SENSE:
1041: /*
1042: * stat: don't bother with a blocksize.
1043: */
1.31 mycroft 1044: splx(s);
1.1 cgd 1045: return (0);
1046:
1.31 mycroft 1047: case PRU_RCVOOB:
1048: error = EOPNOTSUPP;
1049: break;
1050:
1.1 cgd 1051: case PRU_SENDOOB:
1.32 mycroft 1052: m_freem(control);
1.31 mycroft 1053: m_freem(m);
1.1 cgd 1054: error = EOPNOTSUPP;
1055: break;
1056:
1.31 mycroft 1057: case PRU_SOCKADDR:
1058: in_setsockaddr(inp, nam);
1059: break;
1060:
1061: case PRU_PEERADDR:
1062: in_setpeeraddr(inp, nam);
1063: break;
1.1 cgd 1064:
1065: default:
1066: panic("udp_usrreq");
1067: }
1068:
1069: release:
1.31 mycroft 1070: splx(s);
1.1 cgd 1071: return (error);
1.13 mycroft 1072: }
1073:
1074: /*
1075: * Sysctl for udp variables.
1076: */
1.114 atatat 1077: SYSCTL_SETUP(sysctl_net_inet_udp_setup, "sysctl net.inet.udp subtree setup")
1.13 mycroft 1078: {
1.114 atatat 1079:
1.116 atatat 1080: sysctl_createv(clog, 0, NULL, NULL,
1081: CTLFLAG_PERMANENT,
1.114 atatat 1082: CTLTYPE_NODE, "net", NULL,
1083: NULL, 0, NULL, 0,
1084: CTL_NET, CTL_EOL);
1.116 atatat 1085: sysctl_createv(clog, 0, NULL, NULL,
1086: CTLFLAG_PERMANENT,
1.114 atatat 1087: CTLTYPE_NODE, "inet", NULL,
1088: NULL, 0, NULL, 0,
1089: CTL_NET, PF_INET, CTL_EOL);
1.116 atatat 1090: sysctl_createv(clog, 0, NULL, NULL,
1091: CTLFLAG_PERMANENT,
1.114 atatat 1092: CTLTYPE_NODE, "udp", NULL,
1093: NULL, 0, NULL, 0,
1094: CTL_NET, PF_INET, IPPROTO_UDP, CTL_EOL);
1095:
1.116 atatat 1096: sysctl_createv(clog, 0, NULL, NULL,
1097: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1.114 atatat 1098: CTLTYPE_INT, "checksum", NULL,
1099: NULL, 0, &udpcksum, 0,
1100: CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_CHECKSUM,
1101: CTL_EOL);
1.116 atatat 1102: sysctl_createv(clog, 0, NULL, NULL,
1103: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1.114 atatat 1104: CTLTYPE_INT, "sendspace", NULL,
1105: NULL, 0, &udp_sendspace, 0,
1106: CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_SENDSPACE,
1107: CTL_EOL);
1.116 atatat 1108: sysctl_createv(clog, 0, NULL, NULL,
1109: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1.114 atatat 1110: CTLTYPE_INT, "recvspace", NULL,
1111: NULL, 0, &udp_recvspace, 0,
1112: CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_RECVSPACE,
1113: CTL_EOL);
1.1 cgd 1114: }
1.72 itojun 1115: #endif
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