1/*
2 * Copyright (c) 1982, 1986, 1988, 1990, 1993, 1995
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright

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22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * @(#)udp_usrreq.c 8.6 (Berkeley) 5/23/95
30 * $FreeBSD: head/sys/netinet/udp_usrreq.c 131151 2004-06-26 19:10:39Z rwatson $
31 */
32
33#include "opt_ipsec.h"
34#include "opt_inet6.h"
35#include "opt_mac.h"
36
37#include <sys/param.h>
38#include <sys/systm.h>

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442static void
443udp_append(last, ip, n, off)
444 struct inpcb *last;
445 struct ip *ip;
446 struct mbuf *n;
447 int off;
448{
449 struct sockaddr *append_sa;
450 struct socket *so;
451 struct mbuf *opts = 0;
452
453 INP_LOCK_ASSERT(last);
454
455#if defined(IPSEC) || defined(FAST_IPSEC)
456 /* check AH/ESP integrity. */
457 if (ipsec4_in_reject(n, last)) {
458#ifdef IPSEC

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492 in6_sin_2_v4mapsin6(&udp_in, &udp_in6.uin6_sin);
493 udp_in6.uin6_init_done = 1;
494 }
495 append_sa = (struct sockaddr *)&udp_in6.uin6_sin;
496 } else
497#endif
498 append_sa = (struct sockaddr *)&udp_in;
499 m_adj(n, off);
500
501 so = last->inp_socket;
502 SOCKBUF_LOCK(&so->so_rcv);
503 if (sbappendaddr_locked(&so->so_rcv, append_sa, n, opts) == 0) {
504 m_freem(n);
505 if (opts)
506 m_freem(opts);
507 udpstat.udps_fullsock++;
508 SOCKBUF_UNLOCK(&so->so_rcv);
509 } else
510 sorwakeup_locked(so);
511}
512
513/*
514 * Notify a udp user of an asynchronous error;
515 * just wake up so that he can collect error status.
516 */
517struct inpcb *
518udp_notify(inp, errno)

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