1 /* $NetBSD: udp_usrreq.c,v 1.226 2016/06/10 13:31:44 ozaki-r Exp $ */
2
3 /*
4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. 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.
18 *
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 */
31
32 /*
33 * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
34 * The Regents of the University of California. All rights reserved.
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.
44 * 3. Neither the name of the University nor the names of its contributors
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 *
60 * @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95
61 */
62
63 /*
64 * UDP protocol implementation.
65 * Per RFC 768, August, 1980.
66 */
67
68 #include <sys/cdefs.h>
69 __KERNEL_RCSID(0, "$NetBSD: udp_usrreq.c,v 1.226 2016/06/10 13:31:44 ozaki-r Exp $");
70
71 #ifdef _KERNEL_OPT
72 #include "opt_inet.h"
73 #include "opt_compat_netbsd.h"
74 #include "opt_ipsec.h"
75 #include "opt_inet_csum.h"
76 #include "opt_ipkdb.h"
77 #include "opt_mbuftrace.h"
78 #endif
79
80 #include <sys/param.h>
81 #include <sys/mbuf.h>
82 #include <sys/once.h>
83 #include <sys/protosw.h>
84 #include <sys/socket.h>
85 #include <sys/socketvar.h>
86 #include <sys/systm.h>
87 #include <sys/proc.h>
88 #include <sys/domain.h>
89 #include <sys/sysctl.h>
90
91 #include <net/if.h>
92
93 #include <netinet/in.h>
94 #include <netinet/in_systm.h>
95 #include <netinet/in_var.h>
96 #include <netinet/ip.h>
97 #include <netinet/in_pcb.h>
98 #include <netinet/ip_var.h>
99 #include <netinet/ip_icmp.h>
100 #include <netinet/udp.h>
101 #include <netinet/udp_var.h>
102 #include <netinet/udp_private.h>
103
104 #ifdef INET6
105 #include <netinet/ip6.h>
106 #include <netinet/icmp6.h>
107 #include <netinet6/ip6_var.h>
108 #include <netinet6/ip6_private.h>
109 #include <netinet6/in6_pcb.h>
110 #include <netinet6/udp6_var.h>
111 #include <netinet6/udp6_private.h>
112 #endif
113
114 #ifndef INET6
115 /* always need ip6.h for IP6_EXTHDR_GET */
116 #include <netinet/ip6.h>
117 #endif
118
119 #ifdef IPSEC
120 #include <netipsec/ipsec.h>
121 #include <netipsec/ipsec_var.h>
122 #include <netipsec/ipsec_private.h>
123 #include <netipsec/esp.h>
124 #ifdef INET6
125 #include <netipsec/ipsec6.h>
126 #endif
127 #endif /* IPSEC */
128
129 #ifdef COMPAT_50
130 #include <compat/sys/socket.h>
131 #endif
132
133 #ifdef IPKDB
134 #include <ipkdb/ipkdb.h>
135 #endif
136
137 int udpcksum = 1;
138 int udp_do_loopback_cksum = 0;
139
140 struct inpcbtable udbtable;
141
142 percpu_t *udpstat_percpu;
143
144 #ifdef INET
145 #ifdef IPSEC
146 static int udp4_espinudp (struct mbuf **, int, struct sockaddr *,
147 struct socket *);
148 #endif
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);
153 static int udp4_input_checksum(struct mbuf *, const struct udphdr *, int, int);
154 #endif
155 #ifdef INET
156 static void udp_notify (struct inpcb *, int);
157 #endif
158
159 #ifndef UDBHASHSIZE
160 #define UDBHASHSIZE 128
161 #endif
162 int udbhashsize = UDBHASHSIZE;
163
164 /*
165 * For send - really max datagram size; for receive - 40 1K datagrams.
166 */
167 static int udp_sendspace = 9216;
168 static int udp_recvspace = 40 * (1024 + sizeof(struct sockaddr_in));
169
170 #ifdef MBUFTRACE
171 struct mowner udp_mowner = MOWNER_INIT("udp", "");
172 struct mowner udp_rx_mowner = MOWNER_INIT("udp", "rx");
173 struct mowner udp_tx_mowner = MOWNER_INIT("udp", "tx");
174 #endif
175
176 #ifdef UDP_CSUM_COUNTERS
177 #include <sys/device.h>
178
179 #if defined(INET)
180 struct evcnt udp_hwcsum_bad = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
181 NULL, "udp", "hwcsum bad");
182 struct evcnt udp_hwcsum_ok = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
183 NULL, "udp", "hwcsum ok");
184 struct evcnt udp_hwcsum_data = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
185 NULL, "udp", "hwcsum data");
186 struct evcnt udp_swcsum = EVCNT_INITIALIZER(EVCNT_TYPE_MISC,
187 NULL, "udp", "swcsum");
188
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 #endif /* defined(INET) */
194
195 #define UDP_CSUM_COUNTER_INCR(ev) (ev)->ev_count++
196 #else
197 #define UDP_CSUM_COUNTER_INCR(ev) /* nothing */
198 #endif /* UDP_CSUM_COUNTERS */
199
200 static void sysctl_net_inet_udp_setup(struct sysctllog **);
201
202 static int
do_udpinit(void)203 do_udpinit(void)
204 {
205
206 in_pcbinit(&udbtable, udbhashsize, udbhashsize);
207 udpstat_percpu = percpu_alloc(sizeof(uint64_t) * UDP_NSTATS);
208
209 MOWNER_ATTACH(&udp_tx_mowner);
210 MOWNER_ATTACH(&udp_rx_mowner);
211 MOWNER_ATTACH(&udp_mowner);
212
213 return 0;
214 }
215
216 void
udp_init_common(void)217 udp_init_common(void)
218 {
219 static ONCE_DECL(doudpinit);
220
221 RUN_ONCE(&doudpinit, do_udpinit);
222 }
223
224 void
udp_init(void)225 udp_init(void)
226 {
227
228 sysctl_net_inet_udp_setup(NULL);
229
230 udp_init_common();
231 }
232
233 /*
234 * Checksum extended UDP header and data.
235 */
236
237 int
udp_input_checksum(int af,struct mbuf * m,const struct udphdr * uh,int iphlen,int len)238 udp_input_checksum(int af, struct mbuf *m, const struct udphdr *uh,
239 int iphlen, int len)
240 {
241
242 switch (af) {
243 #ifdef INET
244 case AF_INET:
245 return udp4_input_checksum(m, uh, iphlen, len);
246 #endif
247 #ifdef INET6
248 case AF_INET6:
249 return udp6_input_checksum(m, uh, iphlen, len);
250 #endif
251 }
252 #ifdef DIAGNOSTIC
253 panic("udp_input_checksum: unknown af %d", af);
254 #endif
255 /* NOTREACHED */
256 return -1;
257 }
258
259 #ifdef INET
260
261 /*
262 * Checksum extended UDP header and data.
263 */
264
265 static int
udp4_input_checksum(struct mbuf * m,const struct udphdr * uh,int iphlen,int len)266 udp4_input_checksum(struct mbuf *m, const struct udphdr *uh,
267 int iphlen, int len)
268 {
269
270 /*
271 * XXX it's better to record and check if this mbuf is
272 * already checked.
273 */
274
275 if (uh->uh_sum == 0)
276 return 0;
277
278 switch (m->m_pkthdr.csum_flags &
279 ((m_get_rcvif_NOMPSAFE(m)->if_csum_flags_rx & M_CSUM_UDPv4) |
280 M_CSUM_TCP_UDP_BAD | M_CSUM_DATA)) {
281 case M_CSUM_UDPv4|M_CSUM_TCP_UDP_BAD:
282 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_bad);
283 goto badcsum;
284
285 case M_CSUM_UDPv4|M_CSUM_DATA: {
286 u_int32_t hw_csum = m->m_pkthdr.csum_data;
287
288 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_data);
289 if (m->m_pkthdr.csum_flags & M_CSUM_NO_PSEUDOHDR) {
290 const struct ip *ip =
291 mtod(m, const struct ip *);
292
293 hw_csum = in_cksum_phdr(ip->ip_src.s_addr,
294 ip->ip_dst.s_addr,
295 htons(hw_csum + len + IPPROTO_UDP));
296 }
297 if ((hw_csum ^ 0xffff) != 0)
298 goto badcsum;
299 break;
300 }
301
302 case M_CSUM_UDPv4:
303 /* Checksum was okay. */
304 UDP_CSUM_COUNTER_INCR(&udp_hwcsum_ok);
305 break;
306
307 default:
308 /*
309 * Need to compute it ourselves. Maybe skip checksum
310 * on loopback interfaces.
311 */
312 if (__predict_true(!(m_get_rcvif_NOMPSAFE(m)->if_flags &
313 IFF_LOOPBACK) ||
314 udp_do_loopback_cksum)) {
315 UDP_CSUM_COUNTER_INCR(&udp_swcsum);
316 if (in4_cksum(m, IPPROTO_UDP, iphlen, len) != 0)
317 goto badcsum;
318 }
319 break;
320 }
321
322 return 0;
323
324 badcsum:
325 UDP_STATINC(UDP_STAT_BADSUM);
326 return -1;
327 }
328
329 void
udp_input(struct mbuf * m,...)330 udp_input(struct mbuf *m, ...)
331 {
332 va_list ap;
333 struct sockaddr_in src, dst;
334 struct ip *ip;
335 struct udphdr *uh;
336 int iphlen;
337 int len;
338 int n;
339 u_int16_t ip_len;
340
341 va_start(ap, m);
342 iphlen = va_arg(ap, int);
343 (void)va_arg(ap, int); /* ignore value, advance ap */
344 va_end(ap);
345
346 MCLAIM(m, &udp_rx_mowner);
347 UDP_STATINC(UDP_STAT_IPACKETS);
348
349 /*
350 * Get IP and UDP header together in first mbuf.
351 */
352 ip = mtod(m, struct ip *);
353 IP6_EXTHDR_GET(uh, struct udphdr *, m, iphlen, sizeof(struct udphdr));
354 if (uh == NULL) {
355 UDP_STATINC(UDP_STAT_HDROPS);
356 return;
357 }
358 KASSERT(UDP_HDR_ALIGNED_P(uh));
359
360 /* destination port of 0 is illegal, based on RFC768. */
361 if (uh->uh_dport == 0)
362 goto bad;
363
364 /*
365 * Make mbuf data length reflect UDP length.
366 * If not enough data to reflect UDP length, drop.
367 */
368 ip_len = ntohs(ip->ip_len);
369 len = ntohs((u_int16_t)uh->uh_ulen);
370 if (ip_len != iphlen + len) {
371 if (ip_len < iphlen + len || len < sizeof(struct udphdr)) {
372 UDP_STATINC(UDP_STAT_BADLEN);
373 goto bad;
374 }
375 m_adj(m, iphlen + len - ip_len);
376 }
377
378 /*
379 * Checksum extended UDP header and data.
380 */
381 if (udp4_input_checksum(m, uh, iphlen, len))
382 goto badcsum;
383
384 /* construct source and dst sockaddrs. */
385 sockaddr_in_init(&src, &ip->ip_src, uh->uh_sport);
386 sockaddr_in_init(&dst, &ip->ip_dst, uh->uh_dport);
387
388 if ((n = udp4_realinput(&src, &dst, &m, iphlen)) == -1) {
389 UDP_STATINC(UDP_STAT_HDROPS);
390 return;
391 }
392 if (m == NULL) {
393 /*
394 * packet has been processed by ESP stuff -
395 * e.g. dropped NAT-T-keep-alive-packet ...
396 */
397 return;
398 }
399 ip = mtod(m, struct ip *);
400 #ifdef INET6
401 if (IN_MULTICAST(ip->ip_dst.s_addr) || n == 0) {
402 struct sockaddr_in6 src6, dst6;
403
404 memset(&src6, 0, sizeof(src6));
405 src6.sin6_family = AF_INET6;
406 src6.sin6_len = sizeof(struct sockaddr_in6);
407 in6_in_2_v4mapin6(&ip->ip_src, &src6.sin6_addr);
408 src6.sin6_port = uh->uh_sport;
409 memset(&dst6, 0, sizeof(dst6));
410 dst6.sin6_family = AF_INET6;
411 dst6.sin6_len = sizeof(struct sockaddr_in6);
412 in6_in_2_v4mapin6(&ip->ip_dst, &dst6.sin6_addr);
413 dst6.sin6_port = uh->uh_dport;
414
415 n += udp6_realinput(AF_INET, &src6, &dst6, m, iphlen);
416 }
417 #endif
418
419 if (n == 0) {
420 if (m->m_flags & (M_BCAST | M_MCAST)) {
421 UDP_STATINC(UDP_STAT_NOPORTBCAST);
422 goto bad;
423 }
424 UDP_STATINC(UDP_STAT_NOPORT);
425 #ifdef IPKDB
426 if (checkipkdb(&ip->ip_src, uh->uh_sport, uh->uh_dport,
427 m, iphlen + sizeof(struct udphdr),
428 m->m_pkthdr.len - iphlen - sizeof(struct udphdr))) {
429 /*
430 * It was a debugger connect packet,
431 * just drop it now
432 */
433 goto bad;
434 }
435 #endif
436 icmp_error(m, ICMP_UNREACH, ICMP_UNREACH_PORT, 0, 0);
437 m = NULL;
438 }
439
440 bad:
441 if (m)
442 m_freem(m);
443 return;
444
445 badcsum:
446 m_freem(m);
447 }
448 #endif
449
450 #ifdef INET
451 static void
udp4_sendup(struct mbuf * m,int off,struct sockaddr * src,struct socket * so)452 udp4_sendup(struct mbuf *m, int off /* offset of data portion */,
453 struct sockaddr *src, struct socket *so)
454 {
455 struct mbuf *opts = NULL;
456 struct mbuf *n;
457 struct inpcb *inp = NULL;
458
459 if (!so)
460 return;
461 switch (so->so_proto->pr_domain->dom_family) {
462 case AF_INET:
463 inp = sotoinpcb(so);
464 break;
465 #ifdef INET6
466 case AF_INET6:
467 break;
468 #endif
469 default:
470 return;
471 }
472
473 #if defined(IPSEC)
474 /* check AH/ESP integrity. */
475 if (ipsec_used && so != NULL && ipsec4_in_reject_so(m, so)) {
476 IPSEC_STATINC(IPSEC_STAT_IN_POLVIO);
477 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL)
478 icmp_error(n, ICMP_UNREACH, ICMP_UNREACH_ADMIN_PROHIBIT,
479 0, 0);
480 return;
481 }
482 #endif /*IPSEC*/
483
484 if ((n = m_copypacket(m, M_DONTWAIT)) != NULL) {
485 if (inp && (inp->inp_flags & INP_CONTROLOPTS
486 #ifdef SO_OTIMESTAMP
487 || so->so_options & SO_OTIMESTAMP
488 #endif
489 || so->so_options & SO_TIMESTAMP)) {
490 struct ip *ip = mtod(n, struct ip *);
491 ip_savecontrol(inp, &opts, ip, n);
492 }
493
494 m_adj(n, off);
495 if (sbappendaddr(&so->so_rcv, src, n,
496 opts) == 0) {
497 m_freem(n);
498 if (opts)
499 m_freem(opts);
500 so->so_rcv.sb_overflowed++;
501 UDP_STATINC(UDP_STAT_FULLSOCK);
502 } else
503 sorwakeup(so);
504 }
505 }
506 #endif
507
508 #ifdef INET
509 static int
udp4_realinput(struct sockaddr_in * src,struct sockaddr_in * dst,struct mbuf ** mp,int off)510 udp4_realinput(struct sockaddr_in *src, struct sockaddr_in *dst,
511 struct mbuf **mp, int off /* offset of udphdr */)
512 {
513 u_int16_t *sport, *dport;
514 int rcvcnt;
515 struct in_addr *src4, *dst4;
516 struct inpcb_hdr *inph;
517 struct inpcb *inp;
518 struct mbuf *m = *mp;
519
520 rcvcnt = 0;
521 off += sizeof(struct udphdr); /* now, offset of payload */
522
523 if (src->sin_family != AF_INET || dst->sin_family != AF_INET)
524 goto bad;
525
526 src4 = &src->sin_addr;
527 sport = &src->sin_port;
528 dst4 = &dst->sin_addr;
529 dport = &dst->sin_port;
530
531 if (IN_MULTICAST(dst4->s_addr) ||
532 in_broadcast(*dst4, m_get_rcvif_NOMPSAFE(m))) {
533 /*
534 * Deliver a multicast or broadcast datagram to *all* sockets
535 * for which the local and remote addresses and ports match
536 * those of the incoming datagram. This allows more than
537 * one process to receive multi/broadcasts on the same port.
538 * (This really ought to be done for unicast datagrams as
539 * well, but that would cause problems with existing
540 * applications that open both address-specific sockets and
541 * a wildcard socket listening to the same port -- they would
542 * end up receiving duplicates of every unicast datagram.
543 * Those applications open the multiple sockets to overcome an
544 * inadequacy of the UDP socket interface, but for backwards
545 * compatibility we avoid the problem here rather than
546 * fixing the interface. Maybe 4.5BSD will remedy this?)
547 */
548
549 /*
550 * KAME note: traditionally we dropped udpiphdr from mbuf here.
551 * we need udpiphdr for IPsec processing so we do that later.
552 */
553 /*
554 * Locate pcb(s) for datagram.
555 */
556 TAILQ_FOREACH(inph, &udbtable.inpt_queue, inph_queue) {
557 inp = (struct inpcb *)inph;
558 if (inp->inp_af != AF_INET)
559 continue;
560
561 if (inp->inp_lport != *dport)
562 continue;
563 if (!in_nullhost(inp->inp_laddr)) {
564 if (!in_hosteq(inp->inp_laddr, *dst4))
565 continue;
566 }
567 if (!in_nullhost(inp->inp_faddr)) {
568 if (!in_hosteq(inp->inp_faddr, *src4) ||
569 inp->inp_fport != *sport)
570 continue;
571 }
572
573 udp4_sendup(m, off, (struct sockaddr *)src,
574 inp->inp_socket);
575 rcvcnt++;
576
577 /*
578 * Don't look for additional matches if this one does
579 * not have either the SO_REUSEPORT or SO_REUSEADDR
580 * socket options set. This heuristic avoids searching
581 * through all pcbs in the common case of a non-shared
582 * port. It assumes that an application will never
583 * clear these options after setting them.
584 */
585 if ((inp->inp_socket->so_options &
586 (SO_REUSEPORT|SO_REUSEADDR)) == 0)
587 break;
588 }
589 } else {
590 /*
591 * Locate pcb for datagram.
592 */
593 inp = in_pcblookup_connect(&udbtable, *src4, *sport, *dst4,
594 *dport, 0);
595 if (inp == 0) {
596 UDP_STATINC(UDP_STAT_PCBHASHMISS);
597 inp = in_pcblookup_bind(&udbtable, *dst4, *dport);
598 if (inp == 0)
599 return rcvcnt;
600 }
601
602 #ifdef IPSEC
603 /* Handle ESP over UDP */
604 if (inp->inp_flags & INP_ESPINUDP_ALL) {
605 struct sockaddr *sa = (struct sockaddr *)src;
606
607 switch(udp4_espinudp(mp, off, sa, inp->inp_socket)) {
608 case -1: /* Error, m was freeed */
609 rcvcnt = -1;
610 goto bad;
611 break;
612
613 case 1: /* ESP over UDP */
614 rcvcnt++;
615 goto bad;
616 break;
617
618 case 0: /* plain UDP */
619 default: /* Unexpected */
620 /*
621 * Normal UDP processing will take place
622 * m may have changed.
623 */
624 m = *mp;
625 break;
626 }
627 }
628 #endif
629
630 /*
631 * Check the minimum TTL for socket.
632 */
633 if (mtod(m, struct ip *)->ip_ttl < inp->inp_ip_minttl)
634 goto bad;
635
636 udp4_sendup(m, off, (struct sockaddr *)src, inp->inp_socket);
637 rcvcnt++;
638 }
639
640 bad:
641 return rcvcnt;
642 }
643 #endif
644
645 #ifdef INET
646 /*
647 * Notify a udp user of an asynchronous error;
648 * just wake up so that he can collect error status.
649 */
650 static void
udp_notify(struct inpcb * inp,int errno)651 udp_notify(struct inpcb *inp, int errno)
652 {
653 inp->inp_socket->so_error = errno;
654 sorwakeup(inp->inp_socket);
655 sowwakeup(inp->inp_socket);
656 }
657
658 void *
udp_ctlinput(int cmd,const struct sockaddr * sa,void * v)659 udp_ctlinput(int cmd, const struct sockaddr *sa, void *v)
660 {
661 struct ip *ip = v;
662 struct udphdr *uh;
663 void (*notify)(struct inpcb *, int) = udp_notify;
664 int errno;
665
666 if (sa->sa_family != AF_INET
667 || sa->sa_len != sizeof(struct sockaddr_in))
668 return NULL;
669 if ((unsigned)cmd >= PRC_NCMDS)
670 return NULL;
671 errno = inetctlerrmap[cmd];
672 if (PRC_IS_REDIRECT(cmd))
673 notify = in_rtchange, ip = 0;
674 else if (cmd == PRC_HOSTDEAD)
675 ip = 0;
676 else if (errno == 0)
677 return NULL;
678 if (ip) {
679 uh = (struct udphdr *)((char *)ip + (ip->ip_hl << 2));
680 in_pcbnotify(&udbtable, satocsin(sa)->sin_addr, uh->uh_dport,
681 ip->ip_src, uh->uh_sport, errno, notify);
682
683 /* XXX mapped address case */
684 } else
685 in_pcbnotifyall(&udbtable, satocsin(sa)->sin_addr, errno,
686 notify);
687 return NULL;
688 }
689
690 int
udp_ctloutput(int op,struct socket * so,struct sockopt * sopt)691 udp_ctloutput(int op, struct socket *so, struct sockopt *sopt)
692 {
693 int s;
694 int error = 0;
695 struct inpcb *inp;
696 int family;
697 int optval;
698
699 family = so->so_proto->pr_domain->dom_family;
700
701 s = splsoftnet();
702 switch (family) {
703 #ifdef INET
704 case PF_INET:
705 if (sopt->sopt_level != IPPROTO_UDP) {
706 error = ip_ctloutput(op, so, sopt);
707 goto end;
708 }
709 break;
710 #endif
711 #ifdef INET6
712 case PF_INET6:
713 if (sopt->sopt_level != IPPROTO_UDP) {
714 error = ip6_ctloutput(op, so, sopt);
715 goto end;
716 }
717 break;
718 #endif
719 default:
720 error = EAFNOSUPPORT;
721 goto end;
722 }
723
724
725 switch (op) {
726 case PRCO_SETOPT:
727 inp = sotoinpcb(so);
728
729 switch (sopt->sopt_name) {
730 case UDP_ENCAP:
731 error = sockopt_getint(sopt, &optval);
732 if (error)
733 break;
734
735 switch(optval) {
736 case 0:
737 inp->inp_flags &= ~INP_ESPINUDP_ALL;
738 break;
739
740 case UDP_ENCAP_ESPINUDP:
741 inp->inp_flags &= ~INP_ESPINUDP_ALL;
742 inp->inp_flags |= INP_ESPINUDP;
743 break;
744
745 case UDP_ENCAP_ESPINUDP_NON_IKE:
746 inp->inp_flags &= ~INP_ESPINUDP_ALL;
747 inp->inp_flags |= INP_ESPINUDP_NON_IKE;
748 break;
749 default:
750 error = EINVAL;
751 break;
752 }
753 break;
754
755 default:
756 error = ENOPROTOOPT;
757 break;
758 }
759 break;
760
761 default:
762 error = EINVAL;
763 break;
764 }
765
766 end:
767 splx(s);
768 return error;
769 }
770
771
772 int
udp_output(struct mbuf * m,struct inpcb * inp)773 udp_output(struct mbuf *m, struct inpcb *inp)
774 {
775 struct udpiphdr *ui;
776 struct route *ro;
777 int len = m->m_pkthdr.len;
778 int error = 0;
779
780 MCLAIM(m, &udp_tx_mowner);
781
782 /*
783 * Calculate data length and get a mbuf
784 * for UDP and IP headers.
785 */
786 M_PREPEND(m, sizeof(struct udpiphdr), M_DONTWAIT);
787 if (m == 0) {
788 error = ENOBUFS;
789 goto release;
790 }
791
792 /*
793 * Compute the packet length of the IP header, and
794 * punt if the length looks bogus.
795 */
796 if (len + sizeof(struct udpiphdr) > IP_MAXPACKET) {
797 error = EMSGSIZE;
798 goto release;
799 }
800
801 /*
802 * Fill in mbuf with extended UDP header
803 * and addresses and length put into network format.
804 */
805 ui = mtod(m, struct udpiphdr *);
806 ui->ui_pr = IPPROTO_UDP;
807 ui->ui_src = inp->inp_laddr;
808 ui->ui_dst = inp->inp_faddr;
809 ui->ui_sport = inp->inp_lport;
810 ui->ui_dport = inp->inp_fport;
811 ui->ui_ulen = htons((u_int16_t)len + sizeof(struct udphdr));
812
813 ro = &inp->inp_route;
814
815 /*
816 * Set up checksum and output datagram.
817 */
818 if (udpcksum) {
819 /*
820 * XXX Cache pseudo-header checksum part for
821 * XXX "connected" UDP sockets.
822 */
823 ui->ui_sum = in_cksum_phdr(ui->ui_src.s_addr,
824 ui->ui_dst.s_addr, htons((u_int16_t)len +
825 sizeof(struct udphdr) + IPPROTO_UDP));
826 m->m_pkthdr.csum_flags = M_CSUM_UDPv4;
827 m->m_pkthdr.csum_data = offsetof(struct udphdr, uh_sum);
828 } else
829 ui->ui_sum = 0;
830 ((struct ip *)ui)->ip_len = htons(sizeof (struct udpiphdr) + len);
831 ((struct ip *)ui)->ip_ttl = inp->inp_ip.ip_ttl; /* XXX */
832 ((struct ip *)ui)->ip_tos = inp->inp_ip.ip_tos; /* XXX */
833 UDP_STATINC(UDP_STAT_OPACKETS);
834
835 return (ip_output(m, inp->inp_options, ro,
836 inp->inp_socket->so_options & (SO_DONTROUTE | SO_BROADCAST),
837 inp->inp_moptions, inp->inp_socket));
838
839 release:
840 m_freem(m);
841 return (error);
842 }
843
844 static int
udp_attach(struct socket * so,int proto)845 udp_attach(struct socket *so, int proto)
846 {
847 struct inpcb *inp;
848 int error;
849
850 KASSERT(sotoinpcb(so) == NULL);
851
852 /* Assign the lock (must happen even if we will error out). */
853 sosetlock(so);
854
855 #ifdef MBUFTRACE
856 so->so_mowner = &udp_mowner;
857 so->so_rcv.sb_mowner = &udp_rx_mowner;
858 so->so_snd.sb_mowner = &udp_tx_mowner;
859 #endif
860 if (so->so_snd.sb_hiwat == 0 || so->so_rcv.sb_hiwat == 0) {
861 error = soreserve(so, udp_sendspace, udp_recvspace);
862 if (error) {
863 return error;
864 }
865 }
866
867 error = in_pcballoc(so, &udbtable);
868 if (error) {
869 return error;
870 }
871 inp = sotoinpcb(so);
872 inp->inp_ip.ip_ttl = ip_defttl;
873 KASSERT(solocked(so));
874
875 return error;
876 }
877
878 static void
udp_detach(struct socket * so)879 udp_detach(struct socket *so)
880 {
881 struct inpcb *inp;
882
883 KASSERT(solocked(so));
884 inp = sotoinpcb(so);
885 KASSERT(inp != NULL);
886 in_pcbdetach(inp);
887 }
888
889 static int
udp_accept(struct socket * so,struct sockaddr * nam)890 udp_accept(struct socket *so, struct sockaddr *nam)
891 {
892 KASSERT(solocked(so));
893
894 panic("udp_accept");
895
896 return EOPNOTSUPP;
897 }
898
899 static int
udp_bind(struct socket * so,struct sockaddr * nam,struct lwp * l)900 udp_bind(struct socket *so, struct sockaddr *nam, struct lwp *l)
901 {
902 struct inpcb *inp = sotoinpcb(so);
903 struct sockaddr_in *sin = (struct sockaddr_in *)nam;
904 int error = 0;
905 int s;
906
907 KASSERT(solocked(so));
908 KASSERT(inp != NULL);
909 KASSERT(nam != NULL);
910
911 s = splsoftnet();
912 error = in_pcbbind(inp, sin, l);
913 splx(s);
914
915 return error;
916 }
917
918 static int
udp_listen(struct socket * so,struct lwp * l)919 udp_listen(struct socket *so, struct lwp *l)
920 {
921 KASSERT(solocked(so));
922
923 return EOPNOTSUPP;
924 }
925
926 static int
udp_connect(struct socket * so,struct sockaddr * nam,struct lwp * l)927 udp_connect(struct socket *so, struct sockaddr *nam, struct lwp *l)
928 {
929 struct inpcb *inp = sotoinpcb(so);
930 int error = 0;
931 int s;
932
933 KASSERT(solocked(so));
934 KASSERT(inp != NULL);
935 KASSERT(nam != NULL);
936
937 s = splsoftnet();
938 error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l);
939 if (! error)
940 soisconnected(so);
941 splx(s);
942 return error;
943 }
944
945 static int
udp_connect2(struct socket * so,struct socket * so2)946 udp_connect2(struct socket *so, struct socket *so2)
947 {
948 KASSERT(solocked(so));
949
950 return EOPNOTSUPP;
951 }
952
953 static int
udp_disconnect(struct socket * so)954 udp_disconnect(struct socket *so)
955 {
956 struct inpcb *inp = sotoinpcb(so);
957 int s;
958
959 KASSERT(solocked(so));
960 KASSERT(inp != NULL);
961
962 s = splsoftnet();
963 /*soisdisconnected(so);*/
964 so->so_state &= ~SS_ISCONNECTED; /* XXX */
965 in_pcbdisconnect(inp);
966 inp->inp_laddr = zeroin_addr; /* XXX */
967 in_pcbstate(inp, INP_BOUND); /* XXX */
968 splx(s);
969
970 return 0;
971 }
972
973 static int
udp_shutdown(struct socket * so)974 udp_shutdown(struct socket *so)
975 {
976 int s;
977
978 KASSERT(solocked(so));
979
980 s = splsoftnet();
981 socantsendmore(so);
982 splx(s);
983
984 return 0;
985 }
986
987 static int
udp_abort(struct socket * so)988 udp_abort(struct socket *so)
989 {
990 KASSERT(solocked(so));
991
992 panic("udp_abort");
993
994 return EOPNOTSUPP;
995 }
996
997 static int
udp_ioctl(struct socket * so,u_long cmd,void * nam,struct ifnet * ifp)998 udp_ioctl(struct socket *so, u_long cmd, void *nam, struct ifnet *ifp)
999 {
1000 return in_control(so, cmd, nam, ifp);
1001 }
1002
1003 static int
udp_stat(struct socket * so,struct stat * ub)1004 udp_stat(struct socket *so, struct stat *ub)
1005 {
1006 KASSERT(solocked(so));
1007
1008 /* stat: don't bother with a blocksize. */
1009 return 0;
1010 }
1011
1012 static int
udp_peeraddr(struct socket * so,struct sockaddr * nam)1013 udp_peeraddr(struct socket *so, struct sockaddr *nam)
1014 {
1015 int s;
1016
1017 KASSERT(solocked(so));
1018 KASSERT(sotoinpcb(so) != NULL);
1019 KASSERT(nam != NULL);
1020
1021 s = splsoftnet();
1022 in_setpeeraddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1023 splx(s);
1024
1025 return 0;
1026 }
1027
1028 static int
udp_sockaddr(struct socket * so,struct sockaddr * nam)1029 udp_sockaddr(struct socket *so, struct sockaddr *nam)
1030 {
1031 int s;
1032
1033 KASSERT(solocked(so));
1034 KASSERT(sotoinpcb(so) != NULL);
1035 KASSERT(nam != NULL);
1036
1037 s = splsoftnet();
1038 in_setsockaddr(sotoinpcb(so), (struct sockaddr_in *)nam);
1039 splx(s);
1040
1041 return 0;
1042 }
1043
1044 static int
udp_rcvd(struct socket * so,int flags,struct lwp * l)1045 udp_rcvd(struct socket *so, int flags, struct lwp *l)
1046 {
1047 KASSERT(solocked(so));
1048
1049 return EOPNOTSUPP;
1050 }
1051
1052 static int
udp_recvoob(struct socket * so,struct mbuf * m,int flags)1053 udp_recvoob(struct socket *so, struct mbuf *m, int flags)
1054 {
1055 KASSERT(solocked(so));
1056
1057 return EOPNOTSUPP;
1058 }
1059
1060 static int
udp_send(struct socket * so,struct mbuf * m,struct sockaddr * nam,struct mbuf * control,struct lwp * l)1061 udp_send(struct socket *so, struct mbuf *m, struct sockaddr *nam,
1062 struct mbuf *control, struct lwp *l)
1063 {
1064 struct inpcb *inp = sotoinpcb(so);
1065 int error = 0;
1066 struct in_addr laddr; /* XXX */
1067 int s;
1068
1069 KASSERT(solocked(so));
1070 KASSERT(inp != NULL);
1071 KASSERT(m != NULL);
1072
1073 if (control && control->m_len) {
1074 m_freem(control);
1075 m_freem(m);
1076 return EINVAL;
1077 }
1078
1079 memset(&laddr, 0, sizeof laddr);
1080
1081 s = splsoftnet();
1082 if (nam) {
1083 laddr = inp->inp_laddr; /* XXX */
1084 if ((so->so_state & SS_ISCONNECTED) != 0) {
1085 error = EISCONN;
1086 goto die;
1087 }
1088 error = in_pcbconnect(inp, (struct sockaddr_in *)nam, l);
1089 if (error)
1090 goto die;
1091 } else {
1092 if ((so->so_state & SS_ISCONNECTED) == 0) {
1093 error = ENOTCONN;
1094 goto die;
1095 }
1096 }
1097 error = udp_output(m, inp);
1098 m = NULL;
1099 if (nam) {
1100 in_pcbdisconnect(inp);
1101 inp->inp_laddr = laddr; /* XXX */
1102 in_pcbstate(inp, INP_BOUND); /* XXX */
1103 }
1104 die:
1105 if (m)
1106 m_freem(m);
1107
1108 splx(s);
1109 return error;
1110 }
1111
1112 static int
udp_sendoob(struct socket * so,struct mbuf * m,struct mbuf * control)1113 udp_sendoob(struct socket *so, struct mbuf *m, struct mbuf *control)
1114 {
1115 KASSERT(solocked(so));
1116
1117 m_freem(m);
1118 m_freem(control);
1119
1120 return EOPNOTSUPP;
1121 }
1122
1123 static int
udp_purgeif(struct socket * so,struct ifnet * ifp)1124 udp_purgeif(struct socket *so, struct ifnet *ifp)
1125 {
1126 int s;
1127
1128 s = splsoftnet();
1129 mutex_enter(softnet_lock);
1130 in_pcbpurgeif0(&udbtable, ifp);
1131 in_purgeif(ifp);
1132 in_pcbpurgeif(&udbtable, ifp);
1133 mutex_exit(softnet_lock);
1134 splx(s);
1135
1136 return 0;
1137 }
1138
1139 static int
sysctl_net_inet_udp_stats(SYSCTLFN_ARGS)1140 sysctl_net_inet_udp_stats(SYSCTLFN_ARGS)
1141 {
1142
1143 return (NETSTAT_SYSCTL(udpstat_percpu, UDP_NSTATS));
1144 }
1145
1146 /*
1147 * Sysctl for udp variables.
1148 */
1149 static void
sysctl_net_inet_udp_setup(struct sysctllog ** clog)1150 sysctl_net_inet_udp_setup(struct sysctllog **clog)
1151 {
1152
1153 sysctl_createv(clog, 0, NULL, NULL,
1154 CTLFLAG_PERMANENT,
1155 CTLTYPE_NODE, "inet", NULL,
1156 NULL, 0, NULL, 0,
1157 CTL_NET, PF_INET, CTL_EOL);
1158 sysctl_createv(clog, 0, NULL, NULL,
1159 CTLFLAG_PERMANENT,
1160 CTLTYPE_NODE, "udp",
1161 SYSCTL_DESCR("UDPv4 related settings"),
1162 NULL, 0, NULL, 0,
1163 CTL_NET, PF_INET, IPPROTO_UDP, CTL_EOL);
1164
1165 sysctl_createv(clog, 0, NULL, NULL,
1166 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1167 CTLTYPE_INT, "checksum",
1168 SYSCTL_DESCR("Compute UDP checksums"),
1169 NULL, 0, &udpcksum, 0,
1170 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_CHECKSUM,
1171 CTL_EOL);
1172 sysctl_createv(clog, 0, NULL, NULL,
1173 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1174 CTLTYPE_INT, "sendspace",
1175 SYSCTL_DESCR("Default UDP send buffer size"),
1176 NULL, 0, &udp_sendspace, 0,
1177 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_SENDSPACE,
1178 CTL_EOL);
1179 sysctl_createv(clog, 0, NULL, NULL,
1180 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1181 CTLTYPE_INT, "recvspace",
1182 SYSCTL_DESCR("Default UDP receive buffer size"),
1183 NULL, 0, &udp_recvspace, 0,
1184 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_RECVSPACE,
1185 CTL_EOL);
1186 sysctl_createv(clog, 0, NULL, NULL,
1187 CTLFLAG_PERMANENT|CTLFLAG_READWRITE,
1188 CTLTYPE_INT, "do_loopback_cksum",
1189 SYSCTL_DESCR("Perform UDP checksum on loopback"),
1190 NULL, 0, &udp_do_loopback_cksum, 0,
1191 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_LOOPBACKCKSUM,
1192 CTL_EOL);
1193 sysctl_createv(clog, 0, NULL, NULL,
1194 CTLFLAG_PERMANENT,
1195 CTLTYPE_STRUCT, "pcblist",
1196 SYSCTL_DESCR("UDP protocol control block list"),
1197 sysctl_inpcblist, 0, &udbtable, 0,
1198 CTL_NET, PF_INET, IPPROTO_UDP, CTL_CREATE,
1199 CTL_EOL);
1200 sysctl_createv(clog, 0, NULL, NULL,
1201 CTLFLAG_PERMANENT,
1202 CTLTYPE_STRUCT, "stats",
1203 SYSCTL_DESCR("UDP statistics"),
1204 sysctl_net_inet_udp_stats, 0, NULL, 0,
1205 CTL_NET, PF_INET, IPPROTO_UDP, UDPCTL_STATS,
1206 CTL_EOL);
1207 }
1208 #endif
1209
1210 void
udp_statinc(u_int stat)1211 udp_statinc(u_int stat)
1212 {
1213
1214 KASSERT(stat < UDP_NSTATS);
1215 UDP_STATINC(stat);
1216 }
1217
1218 #if defined(INET) && defined(IPSEC)
1219 /*
1220 * Returns:
1221 * 1 if the packet was processed
1222 * 0 if normal UDP processing should take place
1223 * -1 if an error occurent and m was freed
1224 */
1225 static int
udp4_espinudp(struct mbuf ** mp,int off,struct sockaddr * src,struct socket * so)1226 udp4_espinudp(struct mbuf **mp, int off, struct sockaddr *src,
1227 struct socket *so)
1228 {
1229 size_t len;
1230 void *data;
1231 struct inpcb *inp;
1232 size_t skip = 0;
1233 size_t minlen;
1234 size_t iphdrlen;
1235 struct ip *ip;
1236 struct m_tag *tag;
1237 struct udphdr *udphdr;
1238 u_int16_t sport, dport;
1239 struct mbuf *m = *mp;
1240
1241 /*
1242 * Collapse the mbuf chain if the first mbuf is too short
1243 * The longest case is: UDP + non ESP marker + ESP
1244 */
1245 minlen = off + sizeof(u_int64_t) + sizeof(struct esp);
1246 if (minlen > m->m_pkthdr.len)
1247 minlen = m->m_pkthdr.len;
1248
1249 if (m->m_len < minlen) {
1250 if ((*mp = m_pullup(m, minlen)) == NULL) {
1251 printf("udp4_espinudp: m_pullup failed\n");
1252 return -1;
1253 }
1254 m = *mp;
1255 }
1256
1257 len = m->m_len - off;
1258 data = mtod(m, char *) + off;
1259 inp = sotoinpcb(so);
1260
1261 /* Ignore keepalive packets */
1262 if ((len == 1) && (*(unsigned char *)data == 0xff)) {
1263 m_free(m);
1264 *mp = NULL; /* avoid any further processiong by caller ... */
1265 return 1;
1266 }
1267
1268 /*
1269 * Check that the payload is long enough to hold
1270 * an ESP header and compute the length of encapsulation
1271 * header to remove
1272 */
1273 if (inp->inp_flags & INP_ESPINUDP) {
1274 u_int32_t *st = (u_int32_t *)data;
1275
1276 if ((len <= sizeof(struct esp)) || (*st == 0))
1277 return 0; /* Normal UDP processing */
1278
1279 skip = sizeof(struct udphdr);
1280 }
1281
1282 if (inp->inp_flags & INP_ESPINUDP_NON_IKE) {
1283 u_int32_t *st = (u_int32_t *)data;
1284
1285 if ((len <= sizeof(u_int64_t) + sizeof(struct esp))
1286 || ((st[0] | st[1]) != 0))
1287 return 0; /* Normal UDP processing */
1288
1289 skip = sizeof(struct udphdr) + sizeof(u_int64_t);
1290 }
1291
1292 /*
1293 * Get the UDP ports. They are handled in network
1294 * order everywhere in IPSEC_NAT_T code.
1295 */
1296 udphdr = (struct udphdr *)((char *)data - skip);
1297 sport = udphdr->uh_sport;
1298 dport = udphdr->uh_dport;
1299
1300 /*
1301 * Remove the UDP header (and possibly the non ESP marker)
1302 * IP header lendth is iphdrlen
1303 * Before:
1304 * <--- off --->
1305 * +----+------+-----+
1306 * | IP | UDP | ESP |
1307 * +----+------+-----+
1308 * <-skip->
1309 * After:
1310 * +----+-----+
1311 * | IP | ESP |
1312 * +----+-----+
1313 * <-skip->
1314 */
1315 iphdrlen = off - sizeof(struct udphdr);
1316 memmove(mtod(m, char *) + skip, mtod(m, void *), iphdrlen);
1317 m_adj(m, skip);
1318
1319 ip = mtod(m, struct ip *);
1320 ip->ip_len = htons(ntohs(ip->ip_len) - skip);
1321 ip->ip_p = IPPROTO_ESP;
1322
1323 /*
1324 * We have modified the packet - it is now ESP, so we should not
1325 * return to UDP processing ...
1326 *
1327 * Add a PACKET_TAG_IPSEC_NAT_T_PORT tag to remember
1328 * the source UDP port. This is required if we want
1329 * to select the right SPD for multiple hosts behind
1330 * same NAT
1331 */
1332 if ((tag = m_tag_get(PACKET_TAG_IPSEC_NAT_T_PORTS,
1333 sizeof(sport) + sizeof(dport), M_DONTWAIT)) == NULL) {
1334 printf("udp4_espinudp: m_tag_get failed\n");
1335 m_freem(m);
1336 return -1;
1337 }
1338 ((u_int16_t *)(tag + 1))[0] = sport;
1339 ((u_int16_t *)(tag + 1))[1] = dport;
1340 m_tag_prepend(m, tag);
1341
1342 #ifdef IPSEC
1343 if (ipsec_used)
1344 ipsec4_common_input(m, iphdrlen, IPPROTO_ESP);
1345 /* XXX: else */
1346 #else
1347 esp4_input(m, iphdrlen);
1348 #endif
1349
1350 /* We handled it, it shouldn't be handled by UDP */
1351 *mp = NULL; /* avoid free by caller ... */
1352 return 1;
1353 }
1354 #endif
1355
1356 PR_WRAP_USRREQS(udp)
1357 #define udp_attach udp_attach_wrapper
1358 #define udp_detach udp_detach_wrapper
1359 #define udp_accept udp_accept_wrapper
1360 #define udp_bind udp_bind_wrapper
1361 #define udp_listen udp_listen_wrapper
1362 #define udp_connect udp_connect_wrapper
1363 #define udp_connect2 udp_connect2_wrapper
1364 #define udp_disconnect udp_disconnect_wrapper
1365 #define udp_shutdown udp_shutdown_wrapper
1366 #define udp_abort udp_abort_wrapper
1367 #define udp_ioctl udp_ioctl_wrapper
1368 #define udp_stat udp_stat_wrapper
1369 #define udp_peeraddr udp_peeraddr_wrapper
1370 #define udp_sockaddr udp_sockaddr_wrapper
1371 #define udp_rcvd udp_rcvd_wrapper
1372 #define udp_recvoob udp_recvoob_wrapper
1373 #define udp_send udp_send_wrapper
1374 #define udp_sendoob udp_sendoob_wrapper
1375 #define udp_purgeif udp_purgeif_wrapper
1376
1377 const struct pr_usrreqs udp_usrreqs = {
1378 .pr_attach = udp_attach,
1379 .pr_detach = udp_detach,
1380 .pr_accept = udp_accept,
1381 .pr_bind = udp_bind,
1382 .pr_listen = udp_listen,
1383 .pr_connect = udp_connect,
1384 .pr_connect2 = udp_connect2,
1385 .pr_disconnect = udp_disconnect,
1386 .pr_shutdown = udp_shutdown,
1387 .pr_abort = udp_abort,
1388 .pr_ioctl = udp_ioctl,
1389 .pr_stat = udp_stat,
1390 .pr_peeraddr = udp_peeraddr,
1391 .pr_sockaddr = udp_sockaddr,
1392 .pr_rcvd = udp_rcvd,
1393 .pr_recvoob = udp_recvoob,
1394 .pr_send = udp_send,
1395 .pr_sendoob = udp_sendoob,
1396 .pr_purgeif = udp_purgeif,
1397 };
1398