1/*-
2 * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org>
3 * 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
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#include <sys/types.h>
30
31#include <stdio.h>
32#include <termios.h>
33
34#include "layer.h"
35#include "defs.h"
36#include "mbuf.h"
37#include "log.h"
38#include "sync.h"
39#include "timer.h"
40#include "lqr.h"
41#include "hdlc.h"
42#include "throughput.h"
43#include "fsm.h"
44#include "lcp.h"
45#include "ccp.h"
46#include "link.h"
47#include "async.h"
48#include "descriptor.h"
49#include "physical.h"
50
51static struct mbuf *
52sync_LayerPush(struct bundle *bundle __unused, struct link *l __unused,
53	       struct mbuf *bp, int pri __unused, u_short *proto __unused)
54{
55  log_DumpBp(LogSYNC, "Write", bp);
56  m_settype(bp, MB_SYNCOUT);
57  bp->priv = 0;
58  return bp;
59}
60
61static struct mbuf *
62sync_LayerPull(struct bundle *b __unused, struct link *l, struct mbuf *bp,
63               u_short *proto __unused)
64{
65  struct physical *p = link2physical(l);
66  int len;
67
68  if (!p)
69    log_Printf(LogERROR, "Can't Pull a sync packet from a logical link\n");
70  else {
71    log_DumpBp(LogSYNC, "Read", bp);
72
73    /* Either done here or by the HDLC layer */
74    len = m_length(bp);
75    p->hdlc.lqm.ifInOctets += len + 1;		/* plus 1 flag octet! */
76    p->hdlc.lqm.lqr.InGoodOctets += len + 1;	/* plus 1 flag octet! */
77    p->hdlc.lqm.ifInUniPackets++;
78    m_settype(bp, MB_SYNCIN);
79  }
80
81  return bp;
82}
83
84struct layer synclayer = { LAYER_SYNC, "sync", sync_LayerPush, sync_LayerPull };
85