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This is a type of physical link that can chat and talk LCP & CCP. A bundle contains a list of these (only one in the list for the moment). The datalink is a type of descriptor, and dials, enters LCP (& does CCP), kicks the bundle when its FSMs do something interesting and does the hangup chat script on the way down. It also handles redials and reconnects. There are lots of loose ends, and probably lots of bugs, but the data structures are getting there !
75 lines
3.2 KiB
C
75 lines
3.2 KiB
C
/*-
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* Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: link.h,v 1.1.2.3 1998/02/07 20:49:48 brian Exp $
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*
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*/
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#define PHYSICAL_LINK 1
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#define MP_LINK 2
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#define LINK_QUEUES (PRI_MAX + 1)
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#define NPROTOSTAT 11
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struct bundle;
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struct link {
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int type; /* _LINK type */
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char *name; /* unique id per link type */
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int len; /* full size of parent struct */
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struct pppThroughput throughput; /* Link throughput statistics */
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struct pppTimer Timer; /* inactivity timeout */
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struct mqueue Queue[LINK_QUEUES]; /* Our output queue of mbufs */
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u_long proto_in[NPROTOSTAT]; /* outgoing protocol stats */
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u_long proto_out[NPROTOSTAT]; /* incoming protocol stats */
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/* Implementation routines for use by link_ routines */
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void (*StartOutput)(struct link *); /* send the queued data */
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int (*IsActive)(struct link *); /* Are we active ? */
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void (*Close)(struct link *, int); /* Close the link */
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void (*Destroy)(struct link *); /* Destructor */
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};
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extern void link_AddInOctets(struct link *, int);
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extern void link_AddOutOctets(struct link *, int);
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extern void link_SequenceQueue(struct link *);
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extern int link_QueueLen(struct link *);
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extern struct mbuf *link_Dequeue(struct link *);
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extern void link_Write(struct link *, int, const char *, int);
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extern void link_StartOutput(struct link *);
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extern void link_Output(struct link *, int, struct mbuf *);
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#define PROTO_IN 1 /* third arg to link_ProtocolRecord */
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#define PROTO_OUT 2
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extern void link_ProtocolRecord(struct link *, u_short, int);
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extern void link_ReportProtocolStatus(struct link *);
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extern int link_IsActive(struct link *);
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extern void link_Close(struct link *, struct bundle *, int, int);
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extern void link_Destroy(struct link *);
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