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 51 static struct mbuf * 52 sync_LayerPush(struct bundle *bundle, struct link *l, struct mbuf *bp, 53 int pri, u_short *proto) 54 { 55 log_DumpBp(LogSYNC, "Write", bp); 56 m_settype(bp, MB_SYNCOUT); 57 bp->priv = 0; 58 return bp; 59 } 60 61 static struct mbuf * 62 sync_LayerPull(struct bundle *b, struct link *l, struct mbuf *bp, 63 u_short *proto) 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 84 struct layer synclayer = { LAYER_SYNC, "sync", sync_LayerPush, sync_LayerPull }; 85