1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org> 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #include <sys/types.h> 32 33 #include <stdio.h> 34 #include <termios.h> 35 36 #include "layer.h" 37 #include "defs.h" 38 #include "mbuf.h" 39 #include "log.h" 40 #include "sync.h" 41 #include "timer.h" 42 #include "lqr.h" 43 #include "hdlc.h" 44 #include "throughput.h" 45 #include "fsm.h" 46 #include "lcp.h" 47 #include "ccp.h" 48 #include "link.h" 49 #include "async.h" 50 #include "descriptor.h" 51 #include "physical.h" 52 53 static struct mbuf * 54 sync_LayerPush(struct bundle *bundle __unused, struct link *l __unused, 55 struct mbuf *bp, int pri __unused, u_short *proto __unused) 56 { 57 log_DumpBp(LogSYNC, "Write", bp); 58 m_settype(bp, MB_SYNCOUT); 59 bp->priv = 0; 60 return bp; 61 } 62 63 static struct mbuf * 64 sync_LayerPull(struct bundle *b __unused, struct link *l, struct mbuf *bp, 65 u_short *proto __unused) 66 { 67 struct physical *p = link2physical(l); 68 int len; 69 70 if (!p) 71 log_Printf(LogERROR, "Can't Pull a sync packet from a logical link\n"); 72 else { 73 log_DumpBp(LogSYNC, "Read", bp); 74 75 /* Either done here or by the HDLC layer */ 76 len = m_length(bp); 77 p->hdlc.lqm.ifInOctets += len + 1; /* plus 1 flag octet! */ 78 p->hdlc.lqm.lqr.InGoodOctets += len + 1; /* plus 1 flag octet! */ 79 p->hdlc.lqm.ifInUniPackets++; 80 m_settype(bp, MB_SYNCIN); 81 } 82 83 return bp; 84 } 85 86 struct layer synclayer = { LAYER_SYNC, "sync", sync_LayerPush, sync_LayerPull }; 87