Annotation of src/sys/netinet/udp_usrreq.c, Revision 1.128
1.128 ! christos 1: /* $NetBSD: udp_usrreq.c,v 1.127 2004/12/18 15:31:26 yamt 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>
1.128 ! christos 64: __KERNEL_RCSID(0, "$NetBSD: udp_usrreq.c,v 1.127 2004/12/18 15:31:26 yamt 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
1.128 ! christos 144: int udp_do_loopback_cksum = 0;
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: */
1.127 yamt 433: if (__predict_true((m->m_flags & M_LOOP) == 0 ||
434: udp_do_loopback_cksum)) {
1.125 thorpej 435: if (uh->uh_sum == 0) {
436: udp6stat.udp6s_nosum++;
437: goto bad;
438: }
439: if (in6_cksum(m, IPPROTO_UDP, off, ulen) != 0) {
440: udp6stat.udp6s_badsum++;
441: goto bad;
442: }
1.53 itojun 443: }
444:
445: /*
446: * Construct source and dst sockaddrs.
447: * Note that ifindex (s6_addr16[1]) is already filled.
448: */
449: bzero(&src, sizeof(src));
450: src.sin6_family = AF_INET6;
451: src.sin6_len = sizeof(struct sockaddr_in6);
1.69 itojun 452: /* KAME hack: recover scopeid */
453: (void)in6_recoverscope(&src, &ip6->ip6_src, m->m_pkthdr.rcvif);
1.53 itojun 454: src.sin6_port = uh->uh_sport;
455: bzero(&dst, sizeof(dst));
456: dst.sin6_family = AF_INET6;
457: dst.sin6_len = sizeof(struct sockaddr_in6);
1.69 itojun 458: /* KAME hack: recover scopeid */
459: (void)in6_recoverscope(&dst, &ip6->ip6_dst, m->m_pkthdr.rcvif);
1.53 itojun 460: dst.sin6_port = uh->uh_dport;
461:
462: if (udp6_realinput(AF_INET6, &src, &dst, m, off) == 0) {
463: if (m->m_flags & M_MCAST) {
464: udp6stat.udp6s_noportmcast++;
465: goto bad;
466: }
1.61 itojun 467: udp6stat.udp6s_noport++;
1.53 itojun 468: icmp6_error(m, ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT, 0);
469: m = NULL;
470: }
471:
472: bad:
473: if (m)
474: m_freem(m);
475: return IPPROTO_DONE;
476: }
477: #endif
478:
1.72 itojun 479: #ifdef INET
1.53 itojun 480: static void
1.119 matt 481: udp4_sendup(struct mbuf *m, int off /* offset of data portion */,
482: struct sockaddr *src, struct socket *so)
1.53 itojun 483: {
484: struct mbuf *opts = NULL;
485: struct mbuf *n;
486: struct inpcb *inp = NULL;
487:
488: if (!so)
489: return;
490: switch (so->so_proto->pr_domain->dom_family) {
491: case AF_INET:
492: inp = sotoinpcb(so);
493: break;
494: #ifdef INET6
495: case AF_INET6:
496: break;
497: #endif
498: default:
499: return;
500: }
501:
1.105 jonathan 502: #if defined(IPSEC) || defined(FAST_IPSEC)
1.53 itojun 503: /* check AH/ESP integrity. */
504: if (so != NULL && ipsec4_in_reject_so(m, so)) {
505: ipsecstat.in_polvio++;
1.110 itojun 506: if ((n = m_copy(m, 0, M_COPYALL)) != NULL)
507: icmp_error(n, ICMP_UNREACH, ICMP_UNREACH_ADMIN_PROHIBIT,
508: 0, 0);
1.53 itojun 509: return;
510: }
511: #endif /*IPSEC*/
512:
513: if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
514: if (inp && (inp->inp_flags & INP_CONTROLOPTS
515: || so->so_options & SO_TIMESTAMP)) {
516: struct ip *ip = mtod(n, struct ip *);
517: ip_savecontrol(inp, &opts, ip, n);
518: }
519:
520: m_adj(n, off);
521: if (sbappendaddr(&so->so_rcv, src, n,
522: opts) == 0) {
523: m_freem(n);
524: if (opts)
525: m_freem(opts);
1.124 darrenr 526: so->so_rcv.sb_overflowed++;
1.81 enami 527: udpstat.udps_fullsock++;
1.53 itojun 528: } else
529: sorwakeup(so);
530: }
531: }
1.72 itojun 532: #endif
1.53 itojun 533:
534: #ifdef INET6
535: static void
1.119 matt 536: udp6_sendup(struct mbuf *m, int off /* offset of data portion */,
537: struct sockaddr *src, struct socket *so)
1.53 itojun 538: {
539: struct mbuf *opts = NULL;
540: struct mbuf *n;
541: struct in6pcb *in6p = NULL;
542:
543: if (!so)
544: return;
545: if (so->so_proto->pr_domain->dom_family != AF_INET6)
546: return;
547: in6p = sotoin6pcb(so);
548:
1.105 jonathan 549: #if defined(IPSEC) || defined(FAST_IPSEC)
1.53 itojun 550: /* check AH/ESP integrity. */
551: if (so != NULL && ipsec6_in_reject_so(m, so)) {
552: ipsec6stat.in_polvio++;
1.111 mycroft 553: if ((n = m_copy(m, 0, M_COPYALL)) != NULL)
1.110 itojun 554: icmp6_error(n, ICMP6_DST_UNREACH,
555: ICMP6_DST_UNREACH_ADMIN, 0);
1.53 itojun 556: return;
557: }
558: #endif /*IPSEC*/
559:
560: if ((n = m_copy(m, 0, M_COPYALL)) != NULL) {
561: if (in6p && (in6p->in6p_flags & IN6P_CONTROLOPTS
562: || in6p->in6p_socket->so_options & SO_TIMESTAMP)) {
563: struct ip6_hdr *ip6 = mtod(n, struct ip6_hdr *);
564: ip6_savecontrol(in6p, &opts, ip6, n);
565: }
566:
567: m_adj(n, off);
568: if (sbappendaddr(&so->so_rcv, src, n, opts) == 0) {
569: m_freem(n);
570: if (opts)
571: m_freem(opts);
1.124 darrenr 572: so->so_rcv.sb_overflowed++;
1.53 itojun 573: udp6stat.udp6s_fullsock++;
574: } else
575: sorwakeup(so);
576: }
577: }
578: #endif
579:
1.72 itojun 580: #ifdef INET
1.53 itojun 581: static int
1.119 matt 582: udp4_realinput(struct sockaddr_in *src, struct sockaddr_in *dst,
583: struct mbuf *m, int off /* offset of udphdr */)
1.53 itojun 584: {
585: u_int16_t *sport, *dport;
586: int rcvcnt;
587: struct in_addr *src4, *dst4;
1.109 itojun 588: struct inpcb_hdr *inph;
1.53 itojun 589: struct inpcb *inp;
590:
591: rcvcnt = 0;
592: off += sizeof(struct udphdr); /* now, offset of payload */
593:
594: if (src->sin_family != AF_INET || dst->sin_family != AF_INET)
595: goto bad;
596:
597: src4 = &src->sin_addr;
598: sport = &src->sin_port;
599: dst4 = &dst->sin_addr;
600: dport = &dst->sin_port;
601:
1.73 itojun 602: if (IN_MULTICAST(dst4->s_addr) ||
1.53 itojun 603: in_broadcast(*dst4, m->m_pkthdr.rcvif)) {
604: /*
605: * Deliver a multicast or broadcast datagram to *all* sockets
606: * for which the local and remote addresses and ports match
607: * those of the incoming datagram. This allows more than
608: * one process to receive multi/broadcasts on the same port.
609: * (This really ought to be done for unicast datagrams as
610: * well, but that would cause problems with existing
611: * applications that open both address-specific sockets and
612: * a wildcard socket listening to the same port -- they would
613: * end up receiving duplicates of every unicast datagram.
614: * Those applications open the multiple sockets to overcome an
615: * inadequacy of the UDP socket interface, but for backwards
616: * compatibility we avoid the problem here rather than
617: * fixing the interface. Maybe 4.5BSD will remedy this?)
618: */
619:
620: /*
1.92 itojun 621: * KAME note: traditionally we dropped udpiphdr from mbuf here.
1.71 itojun 622: * we need udpiphdr for IPsec processing so we do that later.
1.53 itojun 623: */
624: /*
625: * Locate pcb(s) for datagram.
626: */
1.109 itojun 627: CIRCLEQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) {
628: inp = (struct inpcb *)inph;
629: if (inp->inp_af != AF_INET)
630: continue;
631:
1.53 itojun 632: if (inp->inp_lport != *dport)
633: continue;
634: if (!in_nullhost(inp->inp_laddr)) {
635: if (!in_hosteq(inp->inp_laddr, *dst4))
636: continue;
637: }
638: if (!in_nullhost(inp->inp_faddr)) {
639: if (!in_hosteq(inp->inp_faddr, *src4) ||
640: inp->inp_fport != *sport)
641: continue;
642: }
643:
644: udp4_sendup(m, off, (struct sockaddr *)src,
645: inp->inp_socket);
646: rcvcnt++;
647:
648: /*
649: * Don't look for additional matches if this one does
650: * not have either the SO_REUSEPORT or SO_REUSEADDR
651: * socket options set. This heuristic avoids searching
652: * through all pcbs in the common case of a non-shared
653: * port. It assumes that an application will never
654: * clear these options after setting them.
655: */
656: if ((inp->inp_socket->so_options &
657: (SO_REUSEPORT|SO_REUSEADDR)) == 0)
658: break;
659: }
660: } else {
661: /*
662: * Locate pcb for datagram.
663: */
664: inp = in_pcblookup_connect(&udbtable, *src4, *sport, *dst4, *dport);
665: if (inp == 0) {
666: ++udpstat.udps_pcbhashmiss;
667: inp = in_pcblookup_bind(&udbtable, *dst4, *dport);
1.82 itojun 668: if (inp == 0)
1.53 itojun 669: return rcvcnt;
670: }
671:
672: udp4_sendup(m, off, (struct sockaddr *)src, inp->inp_socket);
673: rcvcnt++;
674: }
675:
676: bad:
677: return rcvcnt;
678: }
1.72 itojun 679: #endif
1.53 itojun 680:
681: #ifdef INET6
682: static int
1.119 matt 683: udp6_realinput(int af, struct sockaddr_in6 *src, struct sockaddr_in6 *dst,
684: struct mbuf *m, int off)
1.53 itojun 685: {
1.79 itojun 686: u_int16_t sport, dport;
1.53 itojun 687: int rcvcnt;
1.79 itojun 688: struct in6_addr src6, dst6;
689: const struct in_addr *dst4;
1.109 itojun 690: struct inpcb_hdr *inph;
1.53 itojun 691: struct in6pcb *in6p;
692:
693: rcvcnt = 0;
694: off += sizeof(struct udphdr); /* now, offset of payload */
695:
696: if (af != AF_INET && af != AF_INET6)
697: goto bad;
698: if (src->sin6_family != AF_INET6 || dst->sin6_family != AF_INET6)
699: goto bad;
700:
1.79 itojun 701: in6_embedscope(&src6, src, NULL, NULL);
702: sport = src->sin6_port;
703: in6_embedscope(&dst6, dst, NULL, NULL);
704: dport = dst->sin6_port;
1.88 itojun 705: dst4 = (struct in_addr *)&dst->sin6_addr.s6_addr[12];
1.53 itojun 706:
1.79 itojun 707: if (IN6_IS_ADDR_MULTICAST(&dst6) ||
708: (af == AF_INET && IN_MULTICAST(dst4->s_addr))) {
1.53 itojun 709: /*
710: * Deliver a multicast or broadcast datagram to *all* sockets
711: * for which the local and remote addresses and ports match
712: * those of the incoming datagram. This allows more than
713: * one process to receive multi/broadcasts on the same port.
714: * (This really ought to be done for unicast datagrams as
715: * well, but that would cause problems with existing
716: * applications that open both address-specific sockets and
717: * a wildcard socket listening to the same port -- they would
718: * end up receiving duplicates of every unicast datagram.
719: * Those applications open the multiple sockets to overcome an
720: * inadequacy of the UDP socket interface, but for backwards
721: * compatibility we avoid the problem here rather than
722: * fixing the interface. Maybe 4.5BSD will remedy this?)
723: */
724:
725: /*
1.92 itojun 726: * KAME note: traditionally we dropped udpiphdr from mbuf here.
1.71 itojun 727: * we need udpiphdr for IPsec processing so we do that later.
1.53 itojun 728: */
729: /*
730: * Locate pcb(s) for datagram.
731: */
1.109 itojun 732: CIRCLEQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) {
733: in6p = (struct in6pcb *)inph;
734: if (in6p->in6p_af != AF_INET6)
735: continue;
736:
1.79 itojun 737: if (in6p->in6p_lport != dport)
1.53 itojun 738: continue;
739: if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_laddr)) {
1.90 itojun 740: if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_laddr, &dst6))
1.53 itojun 741: continue;
1.92 itojun 742: } else {
1.79 itojun 743: if (IN6_IS_ADDR_V4MAPPED(&dst6) &&
1.85 itojun 744: (in6p->in6p_flags & IN6P_IPV6_V6ONLY))
1.55 itojun 745: continue;
746: }
1.53 itojun 747: if (!IN6_IS_ADDR_UNSPECIFIED(&in6p->in6p_faddr)) {
1.79 itojun 748: if (!IN6_ARE_ADDR_EQUAL(&in6p->in6p_faddr,
749: &src6) || in6p->in6p_fport != sport)
1.53 itojun 750: continue;
1.92 itojun 751: } else {
1.79 itojun 752: if (IN6_IS_ADDR_V4MAPPED(&src6) &&
1.85 itojun 753: (in6p->in6p_flags & IN6P_IPV6_V6ONLY))
1.55 itojun 754: continue;
755: }
1.53 itojun 756:
757: udp6_sendup(m, off, (struct sockaddr *)src,
758: in6p->in6p_socket);
759: rcvcnt++;
760:
761: /*
762: * Don't look for additional matches if this one does
763: * not have either the SO_REUSEPORT or SO_REUSEADDR
764: * socket options set. This heuristic avoids searching
765: * through all pcbs in the common case of a non-shared
766: * port. It assumes that an application will never
767: * clear these options after setting them.
768: */
769: if ((in6p->in6p_socket->so_options &
770: (SO_REUSEPORT|SO_REUSEADDR)) == 0)
771: break;
772: }
773: } else {
774: /*
775: * Locate pcb for datagram.
776: */
1.109 itojun 777: in6p = in6_pcblookup_connect(&udbtable, &src6, sport,
1.79 itojun 778: &dst6, dport, 0);
1.53 itojun 779: if (in6p == 0) {
780: ++udpstat.udps_pcbhashmiss;
1.109 itojun 781: in6p = in6_pcblookup_bind(&udbtable, &dst6, dport, 0);
1.82 itojun 782: if (in6p == 0)
1.53 itojun 783: return rcvcnt;
784: }
785:
786: udp6_sendup(m, off, (struct sockaddr *)src, in6p->in6p_socket);
787: rcvcnt++;
788: }
789:
790: bad:
791: return rcvcnt;
792: }
793: #endif
1.1 cgd 794:
1.72 itojun 795: #ifdef INET
1.1 cgd 796: /*
797: * Notify a udp user of an asynchronous error;
798: * just wake up so that he can collect error status.
799: */
1.7 mycroft 800: static void
1.119 matt 801: udp_notify(struct inpcb *inp, int errno)
1.1 cgd 802: {
803: inp->inp_socket->so_error = errno;
804: sorwakeup(inp->inp_socket);
805: sowwakeup(inp->inp_socket);
806: }
807:
1.27 christos 808: void *
1.119 matt 809: udp_ctlinput(int cmd, struct sockaddr *sa, void *v)
1.1 cgd 810: {
1.66 augustss 811: struct ip *ip = v;
812: struct udphdr *uh;
1.119 matt 813: void (*notify)(struct inpcb *, int) = udp_notify;
1.21 mycroft 814: int errno;
1.1 cgd 815:
1.53 itojun 816: if (sa->sa_family != AF_INET
817: || sa->sa_len != sizeof(struct sockaddr_in))
1.51 itojun 818: return NULL;
1.20 mycroft 819: if ((unsigned)cmd >= PRC_NCMDS)
1.27 christos 820: return NULL;
1.20 mycroft 821: errno = inetctlerrmap[cmd];
1.18 mycroft 822: if (PRC_IS_REDIRECT(cmd))
1.19 mycroft 823: notify = in_rtchange, ip = 0;
1.18 mycroft 824: else if (cmd == PRC_HOSTDEAD)
1.19 mycroft 825: ip = 0;
1.23 cgd 826: else if (errno == 0)
1.27 christos 827: return NULL;
1.19 mycroft 828: if (ip) {
1.1 cgd 829: uh = (struct udphdr *)((caddr_t)ip + (ip->ip_hl << 2));
1.34 mycroft 830: in_pcbnotify(&udbtable, satosin(sa)->sin_addr, uh->uh_dport,
831: ip->ip_src, uh->uh_sport, errno, notify);
1.53 itojun 832:
833: /* XXX mapped address case */
1.19 mycroft 834: } else
1.34 mycroft 835: in_pcbnotifyall(&udbtable, satosin(sa)->sin_addr, errno,
836: notify);
1.27 christos 837: return NULL;
1.1 cgd 838: }
839:
1.7 mycroft 840: int
1.27 christos 841: udp_output(struct mbuf *m, ...)
842: {
1.66 augustss 843: struct inpcb *inp;
844: struct udpiphdr *ui;
1.125 thorpej 845: struct route *ro;
1.66 augustss 846: int len = m->m_pkthdr.len;
1.31 mycroft 847: int error = 0;
1.27 christos 848: va_list ap;
849:
1.98 matt 850: MCLAIM(m, &udp_tx_mowner);
1.27 christos 851: va_start(ap, m);
852: inp = va_arg(ap, struct inpcb *);
853: va_end(ap);
1.1 cgd 854:
855: /*
856: * Calculate data length and get a mbuf
857: * for UDP and IP headers.
858: */
1.13 mycroft 859: M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
860: if (m == 0) {
861: error = ENOBUFS;
1.39 thorpej 862: goto release;
863: }
864:
865: /*
866: * Compute the packet length of the IP header, and
867: * punt if the length looks bogus.
868: */
1.96 itojun 869: if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) {
1.39 thorpej 870: error = EMSGSIZE;
1.13 mycroft 871: goto release;
872: }
1.1 cgd 873:
874: /*
875: * Fill in mbuf with extended UDP header
876: * and addresses and length put into network format.
877: */
878: ui = mtod(m, struct udpiphdr *);
879: ui->ui_pr = IPPROTO_UDP;
880: ui->ui_src = inp->inp_laddr;
881: ui->ui_dst = inp->inp_faddr;
882: ui->ui_sport = inp->inp_lport;
883: ui->ui_dport = inp->inp_fport;
1.78 thorpej 884: ui->ui_ulen = htons((u_int16_t)len + sizeof(struct udphdr));
1.1 cgd 885:
1.125 thorpej 886: ro = &inp->inp_route;
887:
1.1 cgd 888: /*
1.78 thorpej 889: * Set up checksum and output datagram.
1.1 cgd 890: */
891: if (udpcksum) {
1.78 thorpej 892: /*
893: * XXX Cache pseudo-header checksum part for
894: * XXX "connected" UDP sockets.
1.125 thorpej 895: * Maybe skip checksums on loopback interfaces.
1.78 thorpej 896: */
897: ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr,
898: ui->ui_dst.s_addr, htons((u_int16_t)len +
899: sizeof(struct udphdr) + IPPROTO_UDP));
1.125 thorpej 900: if (__predict_true(ro->ro_rt == NULL ||
901: !(ro->ro_rt->rt_ifp->if_flags &
902: IFF_LOOPBACK) ||
903: udp_do_loopback_cksum))
904: m->m_pkthdr.csum_flags = M_CSUM_UDPv4;
905: else
906: m->m_pkthdr.csum_flags = 0;
1.78 thorpej 907: m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
908: } else
909: ui->ui_sum = 0;
1.96 itojun 910: ((struct ip *)ui)->ip_len = htons(sizeof (struct udpiphdr) + len);
1.1 cgd 911: ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */
912: ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */
913: udpstat.udps_opackets++;
1.48 itojun 914:
1.125 thorpej 915: return (ip_output(m, inp->inp_options, ro,
1.12 mycroft 916: inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST),
1.107 itojun 917: inp->inp_moptions, inp->inp_socket));
1.1 cgd 918:
919: release:
920: m_freem(m);
921: return (error);
922: }
923:
1.42 thorpej 924: int udp_sendspace = 9216; /* really max datagram size */
925: int udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
1.1 cgd 926: /* 40 1K datagrams */
927:
928: /*ARGSUSED*/
1.7 mycroft 929: int
1.119 matt 930: udp_usrreq(struct socket *so, int req, struct mbuf *m, struct mbuf *nam,
931: struct mbuf *control, struct proc *p)
1.1 cgd 932: {
1.66 augustss 933: struct inpcb *inp;
1.1 cgd 934: int s;
1.66 augustss 935: int error = 0;
1.1 cgd 936:
937: if (req == PRU_CONTROL)
1.31 mycroft 938: return (in_control(so, (long)m, (caddr_t)nam,
1.30 mycroft 939: (struct ifnet *)control, p));
1.59 thorpej 940:
1.60 thorpej 941: if (req == PRU_PURGEIF) {
1.80 itojun 942: in_pcbpurgeif0(&udbtable, (struct ifnet *)control);
1.60 thorpej 943: in_purgeif((struct ifnet *)control);
944: in_pcbpurgeif(&udbtable, (struct ifnet *)control);
1.59 thorpej 945: return (0);
946: }
1.31 mycroft 947:
948: s = splsoftnet();
949: inp = sotoinpcb(so);
1.32 mycroft 950: #ifdef DIAGNOSTIC
951: if (req != PRU_SEND && req != PRU_SENDOOB && control)
952: panic("udp_usrreq: unexpected control mbuf");
953: #endif
1.31 mycroft 954: if (inp == 0 && req != PRU_ATTACH) {
955: error = EINVAL;
956: goto release;
957: }
958:
1.1 cgd 959: /*
960: * Note: need to block udp_input while changing
961: * the udp pcb queue and/or pcb addresses.
962: */
963: switch (req) {
964:
965: case PRU_ATTACH:
1.31 mycroft 966: if (inp != 0) {
967: error = EISCONN;
1.1 cgd 968: break;
969: }
1.98 matt 970: #ifdef MBUFTRACE
971: so->so_mowner = &udp_mowner;
972: so->so_rcv.sb_mowner = &udp_rx_mowner;
973: so->so_snd.sb_mowner = &udp_tx_mowner;
974: #endif
1.31 mycroft 975: if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
976: error = soreserve(so, udp_sendspace, udp_recvspace);
977: if (error)
978: break;
979: }
1.18 mycroft 980: error = in_pcballoc(so, &udbtable);
1.1 cgd 981: if (error)
982: break;
1.31 mycroft 983: inp = sotoinpcb(so);
984: inp->inp_ip.ip_ttl = ip_defttl;
1.1 cgd 985: break;
986:
987: case PRU_DETACH:
1.31 mycroft 988: in_pcbdetach(inp);
1.1 cgd 989: break;
990:
991: case PRU_BIND:
1.31 mycroft 992: error = in_pcbbind(inp, nam, p);
1.1 cgd 993: break;
994:
995: case PRU_LISTEN:
996: error = EOPNOTSUPP;
997: break;
998:
999: case PRU_CONNECT:
1.31 mycroft 1000: error = in_pcbconnect(inp, nam);
1001: if (error)
1.1 cgd 1002: break;
1.31 mycroft 1003: soisconnected(so);
1.1 cgd 1004: break;
1005:
1006: case PRU_CONNECT2:
1007: error = EOPNOTSUPP;
1008: break;
1009:
1010: case PRU_DISCONNECT:
1.31 mycroft 1011: /*soisdisconnected(so);*/
1012: so->so_state &= ~SS_ISCONNECTED; /* XXX */
1.1 cgd 1013: in_pcbdisconnect(inp);
1.34 mycroft 1014: inp->inp_laddr = zeroin_addr; /* XXX */
1.35 mycroft 1015: in_pcbstate(inp, INP_BOUND); /* XXX */
1.1 cgd 1016: break;
1017:
1018: case PRU_SHUTDOWN:
1019: socantsendmore(so);
1020: break;
1021:
1.31 mycroft 1022: case PRU_RCVD:
1023: error = EOPNOTSUPP;
1.1 cgd 1024: break;
1025:
1.31 mycroft 1026: case PRU_SEND:
1.32 mycroft 1027: if (control && control->m_len) {
1028: m_freem(control);
1029: m_freem(m);
1030: error = EINVAL;
1031: break;
1032: }
1.31 mycroft 1033: {
1.35 mycroft 1034: struct in_addr laddr; /* XXX */
1.1 cgd 1035:
1.31 mycroft 1036: if (nam) {
1.35 mycroft 1037: laddr = inp->inp_laddr; /* XXX */
1.31 mycroft 1038: if ((so->so_state & SS_ISCONNECTED) != 0) {
1039: error = EISCONN;
1.32 mycroft 1040: goto die;
1.31 mycroft 1041: }
1042: error = in_pcbconnect(inp, nam);
1.100 matt 1043: if (error)
1044: goto die;
1.31 mycroft 1045: } else {
1046: if ((so->so_state & SS_ISCONNECTED) == 0) {
1047: error = ENOTCONN;
1.32 mycroft 1048: goto die;
1.31 mycroft 1049: }
1050: }
1.33 mycroft 1051: error = udp_output(m, inp);
1.100 matt 1052: m = NULL;
1.31 mycroft 1053: if (nam) {
1054: in_pcbdisconnect(inp);
1.35 mycroft 1055: inp->inp_laddr = laddr; /* XXX */
1056: in_pcbstate(inp, INP_BOUND); /* XXX */
1.31 mycroft 1057: }
1.100 matt 1058: die:
1059: if (m)
1060: m_freem(m);
1.31 mycroft 1061: }
1.1 cgd 1062: break;
1063:
1064: case PRU_SENSE:
1065: /*
1066: * stat: don't bother with a blocksize.
1067: */
1.31 mycroft 1068: splx(s);
1.1 cgd 1069: return (0);
1070:
1.31 mycroft 1071: case PRU_RCVOOB:
1072: error = EOPNOTSUPP;
1073: break;
1074:
1.1 cgd 1075: case PRU_SENDOOB:
1.32 mycroft 1076: m_freem(control);
1.31 mycroft 1077: m_freem(m);
1.1 cgd 1078: error = EOPNOTSUPP;
1079: break;
1080:
1.31 mycroft 1081: case PRU_SOCKADDR:
1082: in_setsockaddr(inp, nam);
1083: break;
1084:
1085: case PRU_PEERADDR:
1086: in_setpeeraddr(inp, nam);
1087: break;
1.1 cgd 1088:
1089: default:
1090: panic("udp_usrreq");
1091: }
1092:
1093: release:
1.31 mycroft 1094: splx(s);
1.1 cgd 1095: return (error);
1.13 mycroft 1096: }
1097:
1098: /*
1099: * Sysctl for udp variables.
1100: */
1.114 atatat 1101: SYSCTL_SETUP(sysctl_net_inet_udp_setup, "sysctl net.inet.udp subtree setup")
1.13 mycroft 1102: {
1.114 atatat 1103:
1.116 atatat 1104: sysctl_createv(clog, 0, NULL, NULL,
1105: CTLFLAG_PERMANENT,
1.114 atatat 1106: CTLTYPE_NODE, "net", NULL,
1107: NULL, 0, NULL, 0,
1108: CTL_NET, CTL_EOL);
1.116 atatat 1109: sysctl_createv(clog, 0, NULL, NULL,
1110: CTLFLAG_PERMANENT,
1.114 atatat 1111: CTLTYPE_NODE, "inet", NULL,
1112: NULL, 0, NULL, 0,
1113: CTL_NET, PF_INET, CTL_EOL);
1.116 atatat 1114: sysctl_createv(clog, 0, NULL, NULL,
1115: CTLFLAG_PERMANENT,
1.122 atatat 1116: CTLTYPE_NODE, "udp",
1117: SYSCTL_DESCR("UDPv4 related settings"),
1.114 atatat 1118: NULL, 0, NULL, 0,
1119: CTL_NET, PF_INET, IPPROTO_UDP, CTL_EOL);
1120:
1.116 atatat 1121: sysctl_createv(clog, 0, NULL, NULL,
1122: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1.122 atatat 1123: CTLTYPE_INT, "checksum",
1.123 heas 1124: SYSCTL_DESCR("Compute UDP checksums"),
1.114 atatat 1125: NULL, 0, &udpcksum, 0,
1126: CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_CHECKSUM,
1127: CTL_EOL);
1.116 atatat 1128: sysctl_createv(clog, 0, NULL, NULL,
1129: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1.122 atatat 1130: CTLTYPE_INT, "sendspace",
1131: SYSCTL_DESCR("Default UDP send buffer size"),
1.114 atatat 1132: NULL, 0, &udp_sendspace, 0,
1133: CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_SENDSPACE,
1134: CTL_EOL);
1.116 atatat 1135: sysctl_createv(clog, 0, NULL, NULL,
1136: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1.122 atatat 1137: CTLTYPE_INT, "recvspace",
1138: SYSCTL_DESCR("Default UDP receive buffer size"),
1.114 atatat 1139: NULL, 0, &udp_recvspace, 0,
1140: CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_RECVSPACE,
1141: CTL_EOL);
1.125 thorpej 1142: sysctl_createv(clog, 0, NULL, NULL,
1143: CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1144: CTLTYPE_INT, "do_loopback_cksum",
1145: SYSCTL_DESCR("Perform UDP checksum on loopback"),
1146: NULL, 0, &udp_do_loopback_cksum, 0,
1147: CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_LOOPBACKCKSUM,
1148: CTL_EOL);
1.1 cgd 1149: }
1.72 itojun 1150: #endif
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