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/*-
* Copyright (c) 1998 Brian Somers <brian@Awfulhak.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/usr.sbin/ppp/link.h,v 1.11.34.1 2010/12/21 17:10:29 kensmith Exp $
*
*/
#define PHYSICAL_LINK 1
#define LOGICAL_LINK 2
#define NPROTOSTAT 13
struct bundle;
struct prompt;
struct cmdargs;
struct link {
int type; /* _LINK type */
const char *name; /* Points to datalink::name */
int len; /* full size of parent struct */
struct {
unsigned gather : 1; /* Gather statistics ourself ? */
struct pppThroughput total; /* Link throughput statistics */
struct pppThroughput *parent; /* MP link throughput statistics */
} stats;
struct mqueue Queue[2]; /* Our output queue of mbufs */
u_long proto_in[NPROTOSTAT]; /* outgoing protocol stats */
u_long proto_out[NPROTOSTAT]; /* incoming protocol stats */
struct lcp lcp; /* Our line control FSM */
struct ccp ccp; /* Our compression FSM */
struct layer const *layer[LAYER_MAX]; /* i/o layers */
int nlayers;
};
#define LINK_QUEUES(link) (sizeof (link)->Queue / sizeof (link)->Queue[0])
#define LINK_HIGHQ(link) ((link)->Queue + LINK_QUEUES(link) - 1)
extern void link_SequenceQueue(struct link *);
extern void link_DeleteQueue(struct link *);
extern size_t link_QueueLen(struct link *);
extern size_t link_QueueBytes(struct link *);
extern void link_PendingLowPriorityData(struct link *, size_t *, size_t *);
extern struct mbuf *link_Dequeue(struct link *);
extern void link_PushPacket(struct link *, struct mbuf *, struct bundle *,
int, u_short);
extern void link_PullPacket(struct link *, char *, size_t, struct bundle *);
extern int link_Stack(struct link *, struct layer *);
extern void link_EmptyStack(struct link *);
#define PROTO_IN 1 /* third arg to link_ProtocolRecord */
#define PROTO_OUT 2
extern void link_ProtocolRecord(struct link *, u_short, int);
extern void link_ReportProtocolStatus(struct link *, struct prompt *);
extern int link_ShowLayers(struct cmdargs const *);
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