freebsd-dev/usr.sbin/ppp/link.c

199 lines
4.7 KiB
C

/*-
* 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.
*
* $Id: link.c,v 1.1.2.19 1998/04/24 19:15:25 brian Exp $
*
*/
#include <sys/types.h>
#include <stdio.h>
#include <termios.h>
#include "mbuf.h"
#include "log.h"
#include "timer.h"
#include "lqr.h"
#include "hdlc.h"
#include "throughput.h"
#include "lcpproto.h"
#include "fsm.h"
#include "descriptor.h"
#include "lcp.h"
#include "ccp.h"
#include "link.h"
#include "prompt.h"
void
link_AddInOctets(struct link *l, int n)
{
throughput_addin(&l->throughput, n);
}
void
link_AddOutOctets(struct link *l, int n)
{
throughput_addout(&l->throughput, n);
}
void
link_SequenceQueue(struct link *l)
{
log_Printf(LogDEBUG, "link_SequenceQueue\n");
while (l->Queue[PRI_NORMAL].qlen)
mbuf_Enqueue(l->Queue + PRI_LINK, mbuf_Dequeue(l->Queue + PRI_NORMAL));
}
int
link_QueueLen(struct link *l)
{
int i, len;
for (i = 0, len = 0; i < LINK_QUEUES; i++)
len += l->Queue[i].qlen;
return len;
}
int
link_QueueBytes(struct link *l)
{
int i, len, bytes;
struct mbuf *m;
bytes = 0;
for (i = 0, len = 0; i < LINK_QUEUES; i++) {
len = l->Queue[i].qlen;
m = l->Queue[i].top;
while (len--) {
bytes += mbuf_Length(m);
m = m->pnext;
}
}
return bytes;
}
struct mbuf *
link_Dequeue(struct link *l)
{
int pri;
struct mbuf *bp;
for (bp = (struct mbuf *)0, pri = LINK_QUEUES - 1; pri >= 0; pri--)
if (l->Queue[pri].qlen) {
bp = mbuf_Dequeue(l->Queue + pri);
log_Printf(LogDEBUG, "link_Dequeue: Dequeued from queue %d,"
" containing %d more packets\n", pri, l->Queue[pri].qlen);
break;
}
return bp;
}
/*
* Write to the link. Actualy, requested packets are queued, and go out
* at some later time depending on the physical link implementation.
*/
void
link_Write(struct link *l, int pri, const char *ptr, int count)
{
struct mbuf *bp;
if(pri < 0 || pri >= LINK_QUEUES)
pri = 0;
bp = mbuf_Alloc(count, MB_LINK);
memcpy(MBUF_CTOP(bp), ptr, count);
mbuf_Enqueue(l->Queue + pri, bp);
}
void
link_Output(struct link *l, int pri, struct mbuf *bp)
{
struct mbuf *wp;
int len;
if(pri < 0 || pri >= LINK_QUEUES)
pri = 0;
len = mbuf_Length(bp);
wp = mbuf_Alloc(len, MB_LINK);
mbuf_Read(bp, MBUF_CTOP(wp), len);
mbuf_Enqueue(l->Queue + pri, wp);
}
static struct protostatheader {
u_short number;
const char *name;
} ProtocolStat[NPROTOSTAT] = {
{ PROTO_IP, "IP" },
{ PROTO_VJUNCOMP, "VJ_UNCOMP" },
{ PROTO_VJCOMP, "VJ_COMP" },
{ PROTO_COMPD, "COMPD" },
{ PROTO_ICOMPD, "ICOMPD" },
{ PROTO_LCP, "LCP" },
{ PROTO_IPCP, "IPCP" },
{ PROTO_CCP, "CCP" },
{ PROTO_PAP, "PAP" },
{ PROTO_LQR, "LQR" },
{ PROTO_CHAP, "CHAP" },
{ PROTO_MP, "MULTILINK" },
{ 0, "Others" }
};
void
link_ProtocolRecord(struct link *l, u_short proto, int type)
{
int i;
for (i = 0; i < NPROTOSTAT; i++)
if (ProtocolStat[i].number == proto)
break;
if (type == PROTO_IN)
l->proto_in[i]++;
else
l->proto_out[i]++;
}
void
link_ReportProtocolStatus(struct link *l, struct prompt *prompt)
{
int i;
prompt_Printf(prompt, " Protocol in out "
"Protocol in out\n");
for (i = 0; i < NPROTOSTAT; i++) {
prompt_Printf(prompt, " %-9s: %8lu, %8lu",
ProtocolStat[i].name, l->proto_in[i], l->proto_out[i]);
if ((i % 2) == 0)
prompt_Printf(prompt, "\n");
}
if (!(i % 2))
prompt_Printf(prompt, "\n");
}