Annotation of src/sys/netinet/udp_usrreq.c, Revision 1.126
1.126 ! christos 1: /* $NetBSD: udp_usrreq.c,v 1.125 2004/12/15 04:25:20 thorpej 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>
1.126 ! christos 64: __KERNEL_RCSID(0, "$NetBSD: udp_usrreq.c,v 1.125 2004/12/15 04:25:20 thorpej 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
1.126 ! christos 144: int udp_do_loopback_cksum = 1;
1.93 matt 145:
146: struct inpcbtable udbtable;
147: struct udpstat udpstat;
1.8 mycroft 148:
1.72 itojun 149: #ifdef INET
1.119 matt 150: static void udp4_sendup (struct mbuf *, int, struct sockaddr *,
151: struct socket *);
152: static int udp4_realinput (struct sockaddr_in *, struct sockaddr_in *,
153: struct mbuf *, int);
1.72 itojun 154: #endif
1.53 itojun 155: #ifdef INET6
1.119 matt 156: static void udp6_sendup (struct mbuf *, int, struct sockaddr *,
157: struct socket *);
158: static int udp6_realinput (int, struct sockaddr_in6 *,
159: struct sockaddr_in6 *, struct mbuf *, int);
1.53 itojun 160: #endif
1.72 itojun 161: #ifdef INET
1.119 matt 162: static void udp_notify (struct inpcb *, int);
1.72 itojun 163: #endif
1.7 mycroft 164:
1.26 mycroft 165: #ifndef UDBHASHSIZE
166: #define UDBHASHSIZE 128
167: #endif
168: int udbhashsize = UDBHASHSIZE;
169:
1.98 matt 170: #ifdef MBUFTRACE
171: struct mowner udp_mowner = { "udp" };
172: struct mowner udp_rx_mowner = { "udp", "rx" };
173: struct mowner udp_tx_mowner = { "udp", "tx" };
174: #endif
175:
1.78 thorpej 176: #ifdef UDP_CSUM_COUNTERS
177: #include <sys/device.h>
178:
179: struct evcnt udp_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
180: NULL, "udp", "hwcsum bad");
181: struct evcnt udp_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
182: NULL, "udp", "hwcsum ok");
183: struct evcnt udp_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
184: NULL, "udp", "hwcsum data");
185: struct evcnt udp_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
186: NULL, "udp", "swcsum");
187:
188: #define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++
189:
1.120 matt 190: EVCNT_ATTACH_STATIC(udp_hwcsum_bad);
191: EVCNT_ATTACH_STATIC(udp_hwcsum_ok);
192: EVCNT_ATTACH_STATIC(udp_hwcsum_data);
193: EVCNT_ATTACH_STATIC(udp_swcsum);
194:
1.78 thorpej 195: #else
196:
197: #define UDP_CSUM_COUNTER_INCR(ev) /* nothing */
198:
199: #endif /* UDP_CSUM_COUNTERS */
200:
1.7 mycroft 201: void
1.119 matt 202: udp_init(void)
1.1 cgd 203: {
1.18 mycroft 204:
1.35 mycroft 205: in_pcbinit(&udbtable, udbhashsize, udbhashsize);
1.78 thorpej 206:
1.98 matt 207: MOWNER_ATTACH(&udp_tx_mowner);
208: MOWNER_ATTACH(&udp_rx_mowner);
209: MOWNER_ATTACH(&udp_mowner);
1.1 cgd 210: }
211:
1.72 itojun 212: #ifdef INET
1.7 mycroft 213: void
1.27 christos 214: udp_input(struct mbuf *m, ...)
1.1 cgd 215: {
1.53 itojun 216: va_list ap;
217: struct sockaddr_in src, dst;
218: struct ip *ip;
219: struct udphdr *uh;
1.97 simonb 220: int iphlen;
1.53 itojun 221: int len;
222: int n;
1.96 itojun 223: u_int16_t ip_len;
1.53 itojun 224:
225: va_start(ap, m);
226: iphlen = va_arg(ap, int);
1.97 simonb 227: (void)va_arg(ap, int); /* ignore value, advance ap */
1.53 itojun 228: va_end(ap);
229:
1.98 matt 230: MCLAIM(m, &udp_rx_mowner);
1.53 itojun 231: udpstat.udps_ipackets++;
232:
233: /*
234: * Get IP and UDP header together in first mbuf.
235: */
236: ip = mtod(m, struct ip *);
237: IP6_EXTHDR_GET(uh, struct udphdr *, m, iphlen, sizeof(struct udphdr));
238: if (uh == NULL) {
239: udpstat.udps_hdrops++;
240: return;
241: }
1.95 thorpej 242: KASSERT(UDP_HDR_ALIGNED_P(uh));
1.53 itojun 243:
1.57 itojun 244: /* destination port of 0 is illegal, based on RFC768. */
245: if (uh->uh_dport == 0)
246: goto bad;
247:
1.53 itojun 248: /*
249: * Make mbuf data length reflect UDP length.
250: * If not enough data to reflect UDP length, drop.
251: */
1.96 itojun 252: ip_len = ntohs(ip->ip_len);
1.53 itojun 253: len = ntohs((u_int16_t)uh->uh_ulen);
1.96 itojun 254: if (ip_len != iphlen + len) {
255: if (ip_len < iphlen + len || len < sizeof(struct udphdr)) {
1.53 itojun 256: udpstat.udps_badlen++;
257: goto bad;
258: }
1.96 itojun 259: m_adj(m, iphlen + len - ip_len);
1.53 itojun 260: }
261:
262: /*
263: * Checksum extended UDP header and data.
264: */
265: if (uh->uh_sum) {
1.78 thorpej 266: switch (m->m_pkthdr.csum_flags &
1.112 enami 267: ((m->m_pkthdr.rcvif->if_csum_flags_rx & M_CSUM_UDPv4) |
268: M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) {
1.78 thorpej 269: case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD:
270: UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad);
271: goto badcsum;
272:
1.106 jonathan 273: case M_CSUM_UDPv4|M_CSUM_DATA: {
274: u_int32_t hw_csum = m->m_pkthdr.csum_data;
1.78 thorpej 275: UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data);
1.106 jonathan 276: if (m->m_pkthdr.csum_flags & M_CSUM_NO_PSEUDOHDR)
1.112 enami 277: hw_csum = in_cksum_phdr(ip->ip_src.s_addr,
278: ip->ip_dst.s_addr,
1.115 drochner 279: htons(hw_csum + len + IPPROTO_UDP));
1.106 jonathan 280: if ((hw_csum ^ 0xffff) != 0)
1.78 thorpej 281: goto badcsum;
282: break;
1.106 jonathan 283: }
1.78 thorpej 284:
285: case M_CSUM_UDPv4:
286: /* Checksum was okay. */
287: UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok);
288: break;
289:
290: default:
1.125 thorpej 291: /*
292: * Need to compute it ourselves. Maybe skip checksum
293: * on loopback interfaces.
294: */
295: if (__predict_true(!(m->m_pkthdr.rcvif->if_flags &
296: IFF_LOOPBACK) ||
297: udp_do_loopback_cksum)) {
298: UDP_CSUM_COUNTER_INCR(&udp_swcsum);
299: if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0)
300: goto badcsum;
301: }
1.78 thorpej 302: break;
1.53 itojun 303: }
304: }
305:
306: /* construct source and dst sockaddrs. */
307: bzero(&src, sizeof(src));
308: src.sin_family = AF_INET;
309: src.sin_len = sizeof(struct sockaddr_in);
310: bcopy(&ip->ip_src, &src.sin_addr, sizeof(src.sin_addr));
311: src.sin_port = uh->uh_sport;
312: bzero(&dst, sizeof(dst));
313: dst.sin_family = AF_INET;
314: dst.sin_len = sizeof(struct sockaddr_in);
315: bcopy(&ip->ip_dst, &dst.sin_addr, sizeof(dst.sin_addr));
316: dst.sin_port = uh->uh_dport;
317:
318: n = udp4_realinput(&src, &dst, m, iphlen);
319: #ifdef INET6
320: if (IN_MULTICAST(ip->ip_dst.s_addr) || n == 0) {
321: struct sockaddr_in6 src6, dst6;
322:
323: bzero(&src6, sizeof(src6));
324: src6.sin6_family = AF_INET6;
325: src6.sin6_len = sizeof(struct sockaddr_in6);
326: src6.sin6_addr.s6_addr[10] = src6.sin6_addr.s6_addr[11] = 0xff;
327: bcopy(&ip->ip_src, &src6.sin6_addr.s6_addr[12],
328: sizeof(ip->ip_src));
329: src6.sin6_port = uh->uh_sport;
330: bzero(&dst6, sizeof(dst6));
331: dst6.sin6_family = AF_INET6;
332: dst6.sin6_len = sizeof(struct sockaddr_in6);
333: dst6.sin6_addr.s6_addr[10] = dst6.sin6_addr.s6_addr[11] = 0xff;
334: bcopy(&ip->ip_dst, &dst6.sin6_addr.s6_addr[12],
335: sizeof(ip->ip_dst));
336: dst6.sin6_port = uh->uh_dport;
337:
338: n += udp6_realinput(AF_INET, &src6, &dst6, m, iphlen);
339: }
340: #endif
341:
342: if (n == 0) {
343: if (m->m_flags & (M_BCAST | M_MCAST)) {
344: udpstat.udps_noportbcast++;
345: goto bad;
346: }
1.61 itojun 347: udpstat.udps_noport++;
1.64 ws 348: #ifdef IPKDB
1.53 itojun 349: if (checkipkdb(&ip->ip_src, uh->uh_sport, uh->uh_dport,
350: m, iphlen + sizeof(struct udphdr),
351: m->m_pkthdr.len - iphlen - sizeof(struct udphdr))) {
352: /*
353: * It was a debugger connect packet,
354: * just drop it now
355: */
356: goto bad;
357: }
358: #endif
359: icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
360: m = NULL;
361: }
362:
363: bad:
364: if (m)
365: m_freem(m);
1.78 thorpej 366: return;
367:
368: badcsum:
369: m_freem(m);
370: udpstat.udps_badsum++;
1.53 itojun 371: }
1.72 itojun 372: #endif
1.53 itojun 373:
374: #ifdef INET6
375: int
1.119 matt 376: udp6_input(struct mbuf **mp, int *offp, int proto)
1.53 itojun 377: {
378: struct mbuf *m = *mp;
379: int off = *offp;
380: struct sockaddr_in6 src, dst;
381: struct ip6_hdr *ip6;
382: struct udphdr *uh;
383: u_int32_t plen, ulen;
384:
1.76 itojun 385: ip6 = mtod(m, struct ip6_hdr *);
386:
1.53 itojun 387: #if defined(NFAITH) && 0 < NFAITH
1.76 itojun 388: if (faithprefix(&ip6->ip6_dst)) {
389: /* send icmp6 host unreach? */
390: m_freem(m);
391: return IPPROTO_DONE;
1.53 itojun 392: }
393: #endif
394:
395: udp6stat.udp6s_ipackets++;
396:
397: /* check for jumbogram is done in ip6_input. we can trust pkthdr.len */
398: plen = m->m_pkthdr.len - off;
399: IP6_EXTHDR_GET(uh, struct udphdr *, m, off, sizeof(struct udphdr));
400: if (uh == NULL) {
401: ip6stat.ip6s_tooshort++;
402: return IPPROTO_DONE;
403: }
1.95 thorpej 404: KASSERT(UDP_HDR_ALIGNED_P(uh));
1.53 itojun 405: ulen = ntohs((u_short)uh->uh_ulen);
1.69 itojun 406: /*
407: * RFC2675 section 4: jumbograms will have 0 in the UDP header field,
408: * iff payload length > 0xffff.
409: */
1.53 itojun 410: if (ulen == 0 && plen > 0xffff)
411: ulen = plen;
412:
413: if (plen != ulen) {
414: udp6stat.udp6s_badlen++;
1.54 itojun 415: goto bad;
416: }
417:
1.57 itojun 418: /* destination port of 0 is illegal, based on RFC768. */
419: if (uh->uh_dport == 0)
420: goto bad;
421:
1.54 itojun 422: /* Be proactive about malicious use of IPv4 mapped address */
423: if (IN6_IS_ADDR_V4MAPPED(&ip6->ip6_src) ||
424: IN6_IS_ADDR_V4MAPPED(&ip6->ip6_dst)) {
425: /* XXX stat */
1.53 itojun 426: goto bad;
427: }
428:
429: /*
1.125 thorpej 430: * Checksum extended UDP header and data. Maybe skip checksum
431: * on loopback interfaces.
1.53 itojun 432: */
1.125 thorpej 433: if (__predict_true(!(m->m_pkthdr.rcvif->if_flags &
434: IFF_LOOPBACK) ||
435: udp_do_loopback_cksum)) {
436: if (uh->uh_sum == 0) {
437: udp6stat.udp6s_nosum++;
438: goto bad;
439: }
440: if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) {
441: udp6stat.udp6s_badsum++;
442: goto bad;
443: }
1.53 itojun 444: }
445:
446: /*
447: * Construct source and dst sockaddrs.
448: * Note that ifindex (s6_addr16[1]) is already filled.
449: */
450: bzero(&src, sizeof(src));
451: src.sin6_family = AF_INET6;
452: src.sin6_len = sizeof(struct sockaddr_in6);
1.69 itojun 453: /* KAME hack: recover scopeid */
454: (void)in6_recoverscope(&src, &ip6->ip6_src, m->m_pkthdr.rcvif);
1.53 itojun 455: src.sin6_port = uh->uh_sport;
456: bzero(&dst, sizeof(dst));
457: dst.sin6_family = AF_INET6;
458: dst.sin6_len = sizeof(struct sockaddr_in6);
1.69 itojun 459: /* KAME hack: recover scopeid */
460: (void)in6_recoverscope(&dst, &ip6->ip6_dst, m->m_pkthdr.rcvif);
1.53 itojun 461: dst.sin6_port = uh->uh_dport;
462:
463: if (udp6_realinput(AF_INET6, &src, &dst, m, off) == 0) {
464: if (m->m_flags & M_MCAST) {
465: udp6stat.udp6s_noportmcast++;
466: goto bad;
467: }
1.61 itojun 468: udp6stat.udp6s_noport++;
1.53 itojun 469: icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0);
470: m = NULL;
471: }
472:
473: bad:
474: if (m)
475: m_freem(m);
476: return IPPROTO_DONE;
477: }
478: #endif
479:
1.72 itojun 480: #ifdef INET
1.53 itojun 481: static void
1.119 matt 482: udp4_sendup(struct mbuf *m, int off /* offset of data portion */,
483: struct sockaddr *src, struct socket *so)
1.53 itojun 484: {
485: struct mbuf *opts = NULL;
486: struct mbuf *n;
487: struct inpcb *inp = NULL;
488:
489: if (!so)
490: return;
491: switch (so->so_proto->pr_domain->dom_family) {
492: case AF_INET:
493: inp = sotoinpcb(so);
494: break;
495: #ifdef INET6
496: case AF_INET6:
497: break;
498: #endif
499: default:
500: return;
501: }
502:
1.105 jonathan 503: #if defined(IPSEC) || defined(FAST_IPSEC)
1.53 itojun 504: /* check AH/ESP integrity. */
505: if (so != NULL && ipsec4_in_reject_so(m, so)) {
506: ipsecstat.in_polvio++;
1.110 itojun 507: if ((n = m_copy(m, 0, M_COPYALL)) != NULL)
508: icmp_error(n, ICMP_UNREACH, ICMP_UNREACH_ADMIN_PROHIBIT,
509: 0, 0);
1.53 itojun 510: return;
511: }
512: #endif /*IPSEC*/
513:
514: if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
515: if (inp && (inp->inp_flags & INP_CONTROLOPTS
516: || so->so_options & SO_TIMESTAMP)) {
517: struct ip *ip = mtod(n, struct ip *);
518: ip_savecontrol(inp, &opts, ip, n);
519: }
520:
521: m_adj(n, off);
522: if (sbappendaddr(&so->so_rcv, src, n,
523: opts) == 0) {
524: m_freem(n);
525: if (opts)
526: m_freem(opts);
1.124 darrenr 527: so->so_rcv.sb_overflowed++;
1.81 enami 528: udpstat.udps_fullsock++;
1.53 itojun 529: } else
530: sorwakeup(so);
531: }
532: }
1.72 itojun 533: #endif
1.53 itojun 534:
535: #ifdef INET6
536: static void
1.119 matt 537: udp6_sendup(struct mbuf *m, int off /* offset of data portion */,
538: struct sockaddr *src, struct socket *so)
1.53 itojun 539: {
540: struct mbuf *opts = NULL;
541: struct mbuf *n;
542: struct in6pcb *in6p = NULL;
543:
544: if (!so)
545: return;
546: if (so->so_proto->pr_domain->dom_family != AF_INET6)
547: return;
548: in6p = sotoin6pcb(so);
549:
1.105 jonathan 550: #if defined(IPSEC) || defined(FAST_IPSEC)
1.53 itojun 551: /* check AH/ESP integrity. */
552: if (so != NULL && ipsec6_in_reject_so(m, so)) {
553: ipsec6stat.in_polvio++;
1.111 mycroft 554: if ((n = m_copy(m, 0, M_COPYALL)) != NULL)
1.110 itojun 555: icmp6_error(n, ICMP6_DST_UNREACH,
556: ICMP6_DST_UNREACH_ADMIN, 0);
1.53 itojun 557: return;
558: }
559: #endif /*IPSEC*/
560:
561: if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
562: if (in6p && (in6p->in6p_flags & IN6P_CONTROLOPTS
563: || in6p->in6p_socket->so_options & SO_TIMESTAMP)) {
564: struct ip6_hdr *ip6 = mtod(n, struct ip6_hdr *);
565: ip6_savecontrol(in6p, &opts, ip6, n);
566: }
567:
568: m_adj(n, off);
569: if (sbappendaddr(&so->so_rcv, src, n, opts) == 0) {
570: m_freem(n);
571: if (opts)
572: m_freem(opts);
1.124 darrenr 573: so->so_rcv.sb_overflowed++;
1.53 itojun 574: udp6stat.udp6s_fullsock++;
575: } else
576: sorwakeup(so);
577: }
578: }
579: #endif
580:
1.72 itojun 581: #ifdef INET
1.53 itojun 582: static int
1.119 matt 583: udp4_realinput(struct sockaddr_in *src, struct sockaddr_in *dst,
584: struct mbuf *m, int off /* offset of udphdr */)
1.53 itojun 585: {
586: u_int16_t *sport, *dport;
587: int rcvcnt;
588: struct in_addr *src4, *dst4;
1.109 itojun 589: struct inpcb_hdr *inph;
1.53 itojun 590: struct inpcb *inp;
591:
592: rcvcnt = 0;
593: off += sizeof(struct udphdr); /* now, offset of payload */
594:
595: if (src->sin_family != AF_INET || dst->sin_family != AF_INET)
596: goto bad;
597:
598: src4 = &src->sin_addr;
599: sport = &src->sin_port;
600: dst4 = &dst->sin_addr;
601: dport = &dst->sin_port;
602:
1.73 itojun 603: if (IN_MULTICAST(dst4->s_addr) ||
1.53 itojun 604: in_broadcast(*dst4, m->m_pkthdr.rcvif)) {
605: /*
606: * Deliver a multicast or broadcast datagram to *all* sockets
607: * for which the local and remote addresses and ports match
608: * those of the incoming datagram. This allows more than
609: * one process to receive multi/broadcasts on the same port.
610: * (This really ought to be done for unicast datagrams as
611: * well, but that would cause problems with existing
612: * applications that open both address-specific sockets and
613: * a wildcard socket listening to the same port -- they would
614: * end up receiving duplicates of every unicast datagram.
615: * Those applications open the multiple sockets to overcome an
616: * inadequacy of the UDP socket interface, but for backwards
617: * compatibility we avoid the problem here rather than
618: * fixing the interface. Maybe 4.5BSD will remedy this?)
619: */
620:
621: /*
1.92 itojun 622: * KAME note: traditionally we dropped udpiphdr from mbuf here.
1.71 itojun 623: * we need udpiphdr for IPsec processing so we do that later.
1.53 itojun 624: */
625: /*
626: * Locate pcb(s) for datagram.
627: */
1.109 itojun 628: CIRCLEQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) {
629: inp = (struct inpcb *)inph;
630: if (inp->inp_af != AF_INET)
631: continue;
632:
1.53 itojun 633: if (inp->inp_lport != *dport)
634: continue;
635: if (!in_nullhost(inp->inp_laddr)) {
636: if (!in_hosteq(inp->inp_laddr, *dst4))
637: continue;
638: }
639: if (!in_nullhost(inp->inp_faddr)) {
640: if (!in_hosteq(inp->inp_faddr, *src4) ||
641: inp->inp_fport != *sport)
642: continue;
643: }
644:
645: udp4_sendup(m, off, (struct sockaddr *)src,
646: inp->inp_socket);
647: rcvcnt++;
648:
649: /*
650: * Don't look for additional matches if this one does
651: * not have either the SO_REUSEPORT or SO_REUSEADDR
652: * socket options set. This heuristic avoids searching
653: * through all pcbs in the common case of a non-shared
654: * port. It assumes that an application will never
655: * clear these options after setting them.
656: */
657: if ((inp->inp_socket->so_options &
658: (SO_REUSEPORT|SO_REUSEADDR)) == 0)
659: break;
660: }
661: } else {
662: /*
663: * Locate pcb for datagram.
664: */
665: inp = in_pcblookup_connect(&udbtable, *src4, *sport, *dst4, *dport);
666: if (inp == 0) {
667: ++udpstat.udps_pcbhashmiss;
668: inp = in_pcblookup_bind(&udbtable, *dst4, *dport);
1.82 itojun 669: if (inp == 0)
1.53 itojun 670: return rcvcnt;
671: }
672:
673: udp4_sendup(m, off, (struct sockaddr *)src, inp->inp_socket);
674: rcvcnt++;
675: }
676:
677: bad:
678: return rcvcnt;
679: }
1.72 itojun 680: #endif
1.53 itojun 681:
682: #ifdef INET6
683: static int
1.119 matt 684: udp6_realinput(int af, struct sockaddr_in6 *src, struct sockaddr_in6 *dst,
685: struct mbuf *m, int off)
1.53 itojun 686: {
1.79 itojun 687: u_int16_t sport, dport;
1.53 itojun 688: int rcvcnt;
1.79 itojun 689: struct in6_addr src6, dst6;
690: const struct in_addr *dst4;
1.109 itojun 691: struct inpcb_hdr *inph;
1.53 itojun 692: struct in6pcb *in6p;
693:
694: rcvcnt = 0;
695: off += sizeof(struct udphdr); /* now, offset of payload */
696:
697: if (af != AF_INET && af != AF_INET6)
698: goto bad;
699: if (src->sin6_family != AF_INET6 || dst->sin6_family != AF_INET6)
700: goto bad;
701:
1.79 itojun 702: in6_embedscope(&src6, src, NULL, NULL);
703: sport = src->sin6_port;
704: in6_embedscope(&dst6, dst, NULL, NULL);
705: dport = dst->sin6_port;
1.88 itojun 706: dst4 = (struct in_addr *)&dst->sin6_addr.s6_addr[12];
1.53 itojun 707:
1.79 itojun 708: if (IN6_IS_ADDR_MULTICAST(&dst6) ||
709: (af == AF_INET && IN_MULTICAST(dst4->s_addr))) {
1.53 itojun 710: /*
711: * Deliver a multicast or broadcast datagram to *all* sockets
712: * for which the local and remote addresses and ports match
713: * those of the incoming datagram. This allows more than
714: * one process to receive multi/broadcasts on the same port.
715: * (This really ought to be done for unicast datagrams as
716: * well, but that would cause problems with existing
717: * applications that open both address-specific sockets and
718: * a wildcard socket listening to the same port -- they would
719: * end up receiving duplicates of every unicast datagram.
720: * Those applications open the multiple sockets to overcome an
721: * inadequacy of the UDP socket interface, but for backwards
722: * compatibility we avoid the problem here rather than
723: * fixing the interface. Maybe 4.5BSD will remedy this?)
724: */
725:
726: /*
1.92 itojun 727: * KAME note: traditionally we dropped udpiphdr from mbuf here.
1.71 itojun 728: * we need udpiphdr for IPsec processing so we do that later.
1.53 itojun 729: */
730: /*
731: * Locate pcb(s) for datagram.
732: */
1.109 itojun 733: CIRCLEQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) {
734: in6p = (struct in6pcb *)inph;
735: if (in6p->in6p_af != AF_INET6)
736: continue;
737:
1.79 itojun 738: if (in6p->in6p_lport != dport)
1.53 itojun 739: continue;
740: if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) {
1.90 itojun 741: if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &dst6))
1.53 itojun 742: continue;
1.92 itojun 743: } else {
1.79 itojun 744: if (IN6_IS_ADDR_V4MAPPED(&dst6) &&
1.85 itojun 745: (in6p->in6p_flags & IN6P_IPV6_V6ONLY))
1.55 itojun 746: continue;
747: }
1.53 itojun 748: if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
1.79 itojun 749: if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr,
750: &src6) || in6p->in6p_fport != sport)
1.53 itojun 751: continue;
1.92 itojun 752: } else {
1.79 itojun 753: if (IN6_IS_ADDR_V4MAPPED(&src6) &&
1.85 itojun 754: (in6p->in6p_flags & IN6P_IPV6_V6ONLY))
1.55 itojun 755: continue;
756: }
1.53 itojun 757:
758: udp6_sendup(m, off, (struct sockaddr *)src,
759: in6p->in6p_socket);
760: rcvcnt++;
761:
762: /*
763: * Don't look for additional matches if this one does
764: * not have either the SO_REUSEPORT or SO_REUSEADDR
765: * socket options set. This heuristic avoids searching
766: * through all pcbs in the common case of a non-shared
767: * port. It assumes that an application will never
768: * clear these options after setting them.
769: */
770: if ((in6p->in6p_socket->so_options &
771: (SO_REUSEPORT|SO_REUSEADDR)) == 0)
772: break;
773: }
774: } else {
775: /*
776: * Locate pcb for datagram.
777: */
1.109 itojun 778: in6p = in6_pcblookup_connect(&udbtable, &src6, sport,
1.79 itojun 779: &dst6, dport, 0);
1.53 itojun 780: if (in6p == 0) {
781: ++udpstat.udps_pcbhashmiss;
1.109 itojun 782: in6p = in6_pcblookup_bind(&udbtable, &dst6, dport, 0);
1.82 itojun 783: if (in6p == 0)
1.53 itojun 784: return rcvcnt;
785: }
786:
787: udp6_sendup(m, off, (struct sockaddr *)src, in6p->in6p_socket);
788: rcvcnt++;
789: }
790:
791: bad:
792: return rcvcnt;
793: }
794: #endif
1.1 cgd 795:
1.72 itojun 796: #ifdef INET
1.1 cgd 797: /*
798: * Notify a udp user of an asynchronous error;
799: * just wake up so that he can collect error status.
800: */
1.7 mycroft 801: static void
1.119 matt 802: udp_notify(struct inpcb *inp, int errno)
1.1 cgd 803: {
804: inp->inp_socket->so_error = errno;
805: sorwakeup(inp->inp_socket);
806: sowwakeup(inp->inp_socket);
807: }
808:
1.27 christos 809: void *
1.119 matt 810: udp_ctlinput(int cmd, struct sockaddr *sa, void *v)
1.1 cgd 811: {
1.66 augustss 812: struct ip *ip = v;
813: struct udphdr *uh;
1.119 matt 814: void (*notify)(struct inpcb *, int) = udp_notify;
1.21 mycroft 815: int errno;
1.1 cgd 816:
1.53 itojun 817: if (sa->sa_family != AF_INET
818: || sa->sa_len != sizeof(struct sockaddr_in))
1.51 itojun 819: return NULL;
1.20 mycroft 820: if ((unsigned)cmd >= PRC_NCMDS)
1.27 christos 821: return NULL;
1.20 mycroft 822: errno = inetctlerrmap[cmd];
1.18 mycroft 823: if (PRC_IS_REDIRECT(cmd))
1.19 mycroft 824: notify = in_rtchange, ip = 0;
1.18 mycroft 825: else if (cmd == PRC_HOSTDEAD)
1.19 mycroft 826: ip = 0;
1.23 cgd 827: else if (errno == 0)
1.27 christos 828: return NULL;
1.19 mycroft 829: if (ip) {
1.1 cgd 830: uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
1.34 mycroft 831: in_pcbnotify(&udbtable, satosin(sa)->sin_addr, uh->uh_dport,
832: ip->ip_src, uh->uh_sport, errno, notify);
1.53 itojun 833:
834: /* XXX mapped address case */
1.19 mycroft 835: } else
1.34 mycroft 836: in_pcbnotifyall(&udbtable, satosin(sa)->sin_addr, errno,
837: notify);
1.27 christos 838: return NULL;
1.1 cgd 839: }
840:
1.7 mycroft 841: int
1.27 christos 842: udp_output(struct mbuf *m, ...)
843: {
1.66 augustss 844: struct inpcb *inp;
845: struct udpiphdr *ui;
1.125 thorpej 846: struct route *ro;
1.66 augustss 847: int len = m->m_pkthdr.len;
1.31 mycroft 848: int error = 0;
1.27 christos 849: va_list ap;
850:
1.98 matt 851: MCLAIM(m, &udp_tx_mowner);
1.27 christos 852: va_start(ap, m);
853: inp = va_arg(ap, struct inpcb *);
854: va_end(ap);
1.1 cgd 855:
856: /*
857: * Calculate data length and get a mbuf
858: * for UDP and IP headers.
859: */
1.13 mycroft 860: M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
861: if (m == 0) {
862: error = ENOBUFS;
1.39 thorpej 863: goto release;
864: }
865:
866: /*
867: * Compute the packet length of the IP header, and
868: * punt if the length looks bogus.
869: */
1.96 itojun 870: if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) {
1.39 thorpej 871: error = EMSGSIZE;
1.13 mycroft 872: goto release;
873: }
1.1 cgd 874:
875: /*
876: * Fill in mbuf with extended UDP header
877: * and addresses and length put into network format.
878: */
879: ui = mtod(m, struct udpiphdr *);
880: ui->ui_pr = IPPROTO_UDP;
881: ui->ui_src = inp->inp_laddr;
882: ui->ui_dst = inp->inp_faddr;
883: ui->ui_sport = inp->inp_lport;
884: ui->ui_dport = inp->inp_fport;
1.78 thorpej 885: ui->ui_ulen = htons((u_int16_t)len + sizeof(struct udphdr));
1.1 cgd 886:
1.125 thorpej 887: ro = &inp->inp_route;
888:
1.1 cgd 889: /*
1.78 thorpej 890: * Set up checksum and output datagram.
1.1 cgd 891: */
892: if (udpcksum) {
1.78 thorpej 893: /*
894: * XXX Cache pseudo-header checksum part for
895: * XXX "connected" UDP sockets.
1.125 thorpej 896: * Maybe skip checksums on loopback interfaces.
1.78 thorpej 897: */
898: ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr,
899: ui->ui_dst.s_addr, htons((u_int16_t)len +
900: sizeof(struct udphdr) + IPPROTO_UDP));
1.125 thorpej 901: if (__predict_true(ro->ro_rt == NULL ||
902: !(ro->ro_rt->rt_ifp->if_flags &
903: IFF_LOOPBACK) ||
904: udp_do_loopback_cksum))
905: m->m_pkthdr.csum_flags = M_CSUM_UDPv4;
906: else
907: m->m_pkthdr.csum_flags = 0;
1.78 thorpej 908: m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
909: } else
910: ui->ui_sum = 0;
1.96 itojun 911: ((struct ip *)ui)->ip_len = htons(sizeof (struct udpiphdr) + len);
1.1 cgd 912: ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */
913: ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */
914: udpstat.udps_opackets++;
1.48 itojun 915:
1.125 thorpej 916: return (ip_output(m, inp->inp_options, ro,
1.12 mycroft 917: inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST),
1.107 itojun 918: inp->inp_moptions, inp->inp_socket));
1.1 cgd 919:
920: release:
921: m_freem(m);
922: return (error);
923: }
924:
1.42 thorpej 925: int udp_sendspace = 9216; /* really max datagram size */
926: int udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
1.1 cgd 927: /* 40 1K datagrams */
928:
929: /*ARGSUSED*/
1.7 mycroft 930: int
1.119 matt 931: udp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
932: struct mbuf *control, struct proc *p)
1.1 cgd 933: {
1.66 augustss 934: struct inpcb *inp;
1.1 cgd 935: int s;
1.66 augustss 936: int error = 0;
1.1 cgd 937:
938: if (req == PRU_CONTROL)
1.31 mycroft 939: return (in_control(so, (long)m, (caddr_t)nam,
1.30 mycroft 940: (struct ifnet *)control, p));
1.59 thorpej 941:
1.60 thorpej 942: if (req == PRU_PURGEIF) {
1.80 itojun 943: in_pcbpurgeif0(&udbtable, (struct ifnet *)control);
1.60 thorpej 944: in_purgeif((struct ifnet *)control);
945: in_pcbpurgeif(&udbtable, (struct ifnet *)control);
1.59 thorpej 946: return (0);
947: }
1.31 mycroft 948:
949: s = splsoftnet();
950: inp = sotoinpcb(so);
1.32 mycroft 951: #ifdef DIAGNOSTIC
952: if (req != PRU_SEND && req != PRU_SENDOOB && control)
953: panic("udp_usrreq: unexpected control mbuf");
954: #endif
1.31 mycroft 955: if (inp == 0 && req != PRU_ATTACH) {
956: error = EINVAL;
957: goto release;
958: }
959:
1.1 cgd 960: /*
961: * Note: need to block udp_input while changing
962: * the udp pcb queue and/or pcb addresses.
963: */
964: switch (req) {
965:
966: case PRU_ATTACH:
1.31 mycroft 967: if (inp != 0) {
968: error = EISCONN;
1.1 cgd 969: break;
970: }
1.98 matt 971: #ifdef MBUFTRACE
972: so->so_mowner = &udp_mowner;
973: so->so_rcv.sb_mowner = &udp_rx_mowner;
974: so->so_snd.sb_mowner = &udp_tx_mowner;
975: #endif
1.31 mycroft 976: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
977: error = soreserve(so, udp_sendspace, udp_recvspace);
978: if (error)
979: break;
980: }
1.18 mycroft 981: error = in_pcballoc(so, &udbtable);
1.1 cgd 982: if (error)
983: break;
1.31 mycroft 984: inp = sotoinpcb(so);
985: inp->inp_ip.ip_ttl = ip_defttl;
1.1 cgd 986: break;
987:
988: case PRU_DETACH:
1.31 mycroft 989: in_pcbdetach(inp);
1.1 cgd 990: break;
991:
992: case PRU_BIND:
1.31 mycroft 993: error = in_pcbbind(inp, nam, p);
1.1 cgd 994: break;
995:
996: case PRU_LISTEN:
997: error = EOPNOTSUPP;
998: break;
999:
1000: case PRU_CONNECT:
1.31 mycroft 1001: error = in_pcbconnect(inp, nam);
1002: if (error)
1.1 cgd 1003: break;
1.31 mycroft 1004: soisconnected(so);
1.1 cgd 1005: break;
1006:
1007: case PRU_CONNECT2:
1008: error = EOPNOTSUPP;
1009: break;
1010:
1011: case PRU_DISCONNECT:
1.31 mycroft 1012: /*soisdisconnected(so);*/
1013: so->so_state &= ~SS_ISCONNECTED; /* XXX */
1.1 cgd 1014: in_pcbdisconnect(inp);
1.34 mycroft 1015: inp->inp_laddr = zeroin_addr; /* XXX */
1.35 mycroft 1016: in_pcbstate(inp, INP_BOUND); /* XXX */
1.1 cgd 1017: break;
1018:
1019: case PRU_SHUTDOWN:
1020: socantsendmore(so);
1021: break;
1022:
1.31 mycroft 1023: case PRU_RCVD:
1024: error = EOPNOTSUPP;
1.1 cgd 1025: break;
1026:
1.31 mycroft 1027: case PRU_SEND:
1.32 mycroft 1028: if (control && control->m_len) {
1029: m_freem(control);
1030: m_freem(m);
1031: error = EINVAL;
1032: break;
1033: }
1.31 mycroft 1034: {
1.35 mycroft 1035: struct in_addr laddr; /* XXX */
1.1 cgd 1036:
1.31 mycroft 1037: if (nam) {
1.35 mycroft 1038: laddr = inp->inp_laddr; /* XXX */
1.31 mycroft 1039: if ((so->so_state & SS_ISCONNECTED) != 0) {
1040: error = EISCONN;
1.32 mycroft 1041: goto die;
1.31 mycroft 1042: }
1043: error = in_pcbconnect(inp, nam);
1.100 matt 1044: if (error)
1045: goto die;
1.31 mycroft 1046: } else {
1047: if ((so->so_state & SS_ISCONNECTED) == 0) {
1048: error = ENOTCONN;
1.32 mycroft 1049: goto die;
1.31 mycroft 1050: }
1051: }
1.33 mycroft 1052: error = udp_output(m, inp);
1.100 matt 1053: m = NULL;
1.31 mycroft 1054: if (nam) {
1055: in_pcbdisconnect(inp);
1.35 mycroft 1056: inp->inp_laddr = laddr; /* XXX */
1057: in_pcbstate(inp, INP_BOUND); /* XXX */
1.31 mycroft 1058: }
1.100 matt 1059: die:
1060: if (m)
1061: m_freem(m);
1.31 mycroft 1062: }
1.1 cgd 1063: break;
1064:
1065: case PRU_SENSE:
1066: /*
1067: * stat: don't bother with a blocksize.
1068: */
1.31 mycroft 1069: splx(s);
1.1 cgd 1070: return (0);
1071:
1.31 mycroft 1072: case PRU_RCVOOB:
1073: error = EOPNOTSUPP;
1074: break;
1075:
1.1 cgd 1076: case PRU_SENDOOB:
1.32 mycroft 1077: m_freem(control);
1.31 mycroft 1078: m_freem(m);
1.1 cgd 1079: error = EOPNOTSUPP;
1080: break;
1081:
1.31 mycroft 1082: case PRU_SOCKADDR:
1083: in_setsockaddr(inp, nam);
1084: break;
1085:
1086: case PRU_PEERADDR:
1087: in_setpeeraddr(inp, nam);
1088: break;
1.1 cgd 1089:
1090: default:
1091: panic("udp_usrreq");
1092: }
1093:
1094: release:
1.31 mycroft 1095: splx(s);
1.1 cgd 1096: return (error);
1.13 mycroft 1097: }
1098:
1099: /*
1100: * Sysctl for udp variables.
1101: */
1.114 atatat 1102: SYSCTL_SETUP(sysctl_net_inet_udp_setup, "sysctl net.inet.udp subtree setup")
1.13 mycroft 1103: {
1.114 atatat 1104:
1.116 atatat 1105: sysctl_createv(clog, 0, NULL, NULL,
1106: CTLFLAG_PERMANENT,
1.114 atatat 1107: CTLTYPE_NODE, "net", NULL,
1108: NULL, 0, NULL, 0,
1109: CTL_NET, CTL_EOL);
1.116 atatat 1110: sysctl_createv(clog, 0, NULL, NULL,
1111: CTLFLAG_PERMANENT,
1.114 atatat 1112: CTLTYPE_NODE, "inet", NULL,
1113: NULL, 0, NULL, 0,
1114: CTL_NET, PF_INET, CTL_EOL);
1.116 atatat 1115: sysctl_createv(clog, 0, NULL, NULL,
1116: CTLFLAG_PERMANENT,
1.122 atatat 1117: CTLTYPE_NODE, "udp",
1118: SYSCTL_DESCR("UDPv4 related settings"),
1.114 atatat 1119: NULL, 0, NULL, 0,
1120: CTL_NET, PF_INET, IPPROTO_UDP, CTL_EOL);
1121:
1.116 atatat 1122: sysctl_createv(clog, 0, NULL, NULL,
1123: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1.122 atatat 1124: CTLTYPE_INT, "checksum",
1.123 heas 1125: SYSCTL_DESCR("Compute UDP checksums"),
1.114 atatat 1126: NULL, 0, &udpcksum, 0,
1127: CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_CHECKSUM,
1128: CTL_EOL);
1.116 atatat 1129: sysctl_createv(clog, 0, NULL, NULL,
1130: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1.122 atatat 1131: CTLTYPE_INT, "sendspace",
1132: SYSCTL_DESCR("Default UDP send buffer size"),
1.114 atatat 1133: NULL, 0, &udp_sendspace, 0,
1134: CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_SENDSPACE,
1135: CTL_EOL);
1.116 atatat 1136: sysctl_createv(clog, 0, NULL, NULL,
1137: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1.122 atatat 1138: CTLTYPE_INT, "recvspace",
1139: SYSCTL_DESCR("Default UDP receive buffer size"),
1.114 atatat 1140: NULL, 0, &udp_recvspace, 0,
1141: CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_RECVSPACE,
1142: CTL_EOL);
1.125 thorpej 1143: sysctl_createv(clog, 0, NULL, NULL,
1144: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1145: CTLTYPE_INT, "do_loopback_cksum",
1146: SYSCTL_DESCR("Perform UDP checksum on loopback"),
1147: NULL, 0, &udp_do_loopback_cksum, 0,
1148: CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_LOOPBACKCKSUM,
1149: CTL_EOL);
1.1 cgd 1150: }
1.72 itojun 1151: #endif
CVSweb <webmaster@jp.NetBSD.org>