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Allow the use of a "stopped" timeout via the

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"set stopped" directive.  If the timeout occurs
it will cause a "Down" event, hanging up the line
if it's still up.  This *isn't* part of the FSM
diagram, but I consider it ok as a "higher level
implementation specific timeout" as specified in
the rfc ;-}

Discussed briefly with:	joerg
This commit is contained in:
Brian Somers 1997-08-17 20:45:50 +00:00
parent 5b9b04192a
commit 71144dc552
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=28327
6 changed files with 117 additions and 15 deletions
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30
usr.sbin/ppp/command.c
View file

@ -17,7 +17,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: command.c,v 1.66 1997/07/12 19:22:34 brian Exp $
* $Id: command.c,v 1.67 1997/07/14 01:41:26 brian Exp $
*
*/
#include <sys/types.h>
@ -383,6 +383,17 @@ static int ShowTimeout()
return 1;
}
static int ShowStopped()
{
if (!VarTerm)
return 0;
if (!VarStoppedTimeout)
fprintf(VarTerm, " Stopped Timer: Disabled\n");
else
fprintf(VarTerm, " Stopped Timer: %d secs\n", VarStoppedTimeout);
return 1;
}
static int ShowAuthKey()
{
if (!VarTerm)
@ -520,6 +531,8 @@ struct cmdtab const ShowCommands[] = {
"Show routing table", "show route"},
{ "timeout", NULL, ShowTimeout, LOCAL_AUTH,
"Show Idle timeout value", "show timeout"},
{ "stopped", NULL, ShowStopped, LOCAL_AUTH,
"Show STOPPED timeout value", "show stopped"},
#ifndef NOMSEXT
{ "msext", NULL, ShowMSExt, LOCAL_AUTH,
"Show MS PPP extentions", "show msext"},
@ -840,6 +853,19 @@ char **argv;
return -1;
}
static int
SetStoppedTimeout(list, argc, argv)
struct cmdtab *list;
int argc;
char **argv;
{
if (argc == 1) {
VarStoppedTimeout = atoi(argv[0]);
return 0;
}
return -1;
}
static int
SetServer(list, argc, argv)
struct cmdtab *list;
@ -1290,6 +1316,8 @@ struct cmdtab const SetCommands[] = {
"Set Reconnect timeout", "set reconnect value ntries"},
{ "redial", NULL, SetRedialTimeout, LOCAL_AUTH,
"Set Redial timeout", "set redial value|random[.value|random] [dial_attempts]"},
{ "stopped", NULL, SetStoppedTimeout, LOCAL_AUTH,
"Set STOPPED timeout", "set stopped value"},
{ "server", "socket", SetServer, LOCAL_AUTH,
"Set server port", "set server|socket TcpPort|LocalName|none [mask]"},
{ "speed", NULL, SetModemSpeed, LOCAL_AUTH,

40
usr.sbin/ppp/fsm.c
View file

@ -17,7 +17,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: fsm.c,v 1.12 1997/06/02 00:04:40 brian Exp $
* $Id: fsm.c,v 1.13 1997/06/09 03:27:21 brian Exp $
*
* TODO:
* o Refer loglevel for log output
@ -29,6 +29,9 @@
#include "lcpproto.h"
#include "lcp.h"
#include "ccp.h"
#include "modem.h"
#include "loadalias.h"
#include "vars.h"
void FsmSendConfigReq(struct fsm *fp);
void FsmSendTerminateReq(struct fsm *fp);
@ -40,6 +43,29 @@ char const *StateNames[] = {
"Req-Sent", "Ack-Rcvd", "Ack-Sent", "Opened",
};
/*
* This timer times the ST_STOPPED state out after the given value
* (specified via "set stopped ..."). Although this isn't
* specified in the rfc, the rfc *does* say that "the application
* may use higher level timers to avoid deadlock".
* The StoppedTimer takes effect when the other side ABENDs rather
* than going into ST_ACKSENT (and sending the ACK), causing ppp to
* time out and drop into ST_STOPPED. At this point, nothing will
* change this state :-(
*/
struct pppTimer StoppedTimer;
static void
StoppedTimeout(fp)
struct fsm *fp;
{
LogPrintf(LogLCP, "Stopped timer expired\n");
if (modem != -1)
DownConnection();
else
FsmDown(fp);
}
void
FsmInit(fp)
struct fsm *fp;
@ -58,9 +84,19 @@ int new;
{
LogPrintf(LogLCP, "State change %s --> %s\n",
StateNames[fp->state], StateNames[new]);
if (fp->state == ST_STOPPED && StoppedTimer.state == TIMER_RUNNING)
StopTimer(&StoppedTimer);
fp->state = new;
if ((new >= ST_INITIAL && new <= ST_STOPPED) || (new == ST_OPENED))
if ((new >= ST_INITIAL && new <= ST_STOPPED) || (new == ST_OPENED)) {
StopTimer(&fp->FsmTimer);
if (new == ST_STOPPED && VarStoppedTimeout) {
StoppedTimer.state = TIMER_STOPPED;
StoppedTimer.func = StoppedTimeout;
StoppedTimer.arg = (void *)fp;
StoppedTimer.load = VarStoppedTimeout * SECTICKS;
StartTimer(&StoppedTimer);
}
}
}
void

26
usr.sbin/ppp/ppp.8
View file

@ -1,4 +1,4 @@
.\" $Id: ppp.8,v 1.46 1997/08/10 22:03:20 brian Exp $
.\" $Id: ppp.8,v 1.47 1997/08/17 20:38:44 brian Exp $
.Dd 20 September 1995
.Os FreeBSD
.Dt PPP 8
@ -506,7 +506,7 @@ is the number of times to try to connect for each outgoing packet
that is received. The previous value is unchanged if this parameter
is omitted. If a value of zero is specified for
.Sq dial_attempts ,
.Nm ppp
.Nm
will keep trying until a connection is made.
.Bd -literal -offset indent
set redial 10.3 4
@ -1190,7 +1190,7 @@ add 0 0 HISADDR
HISADDR is a macro meaning the "other side"s IP number, and is
available once an IP number has been agreed (using LCP).
Now, once a connection is established,
.Nm ppp
.Nm
will delete all non-direct interface routes, and add a default route
pointing at the peers IP number. You should use the same label as the
one used in
@ -1670,6 +1670,21 @@ is taken before starting at the first number again. A value of
.Dq random
may be used here too.
.It set stopped seconds
If this option is set,
.Nm
will time out after being the the stopped state for the given number of
.Dq seconds .
This option may be useful if you see ppp failing to respond in the
stopped state. Use
.Dq set log +lcp
to make
.Nm
log state transitions.
.Pp
The default value is zero, where ppp doesn't time out in the stopped
state.
.It set server|socket TcpPort|LocalName|none [mask]
Normally, when not in interactive mode,
.Nm
@ -1778,6 +1793,9 @@ Show the current reconnect values.
.It show redial
Show the current redial values.
.It show stopped
Show the current stopped timeout.
.It show route
Show the current routing tables.
@ -1874,7 +1892,7 @@ This command gives a summary of available alias commands.
.It quit|bye [all]
Exit
.Nm ppp.
.Nm ppp .
If
.Nm
is in interactive mode or if the

26
usr.sbin/ppp/ppp.8.m4
View file

@ -1,4 +1,4 @@
.\" $Id: ppp.8,v 1.46 1997/08/10 22:03:20 brian Exp $
.\" $Id: ppp.8,v 1.47 1997/08/17 20:38:44 brian Exp $
.Dd 20 September 1995
.Os FreeBSD
.Dt PPP 8
@ -506,7 +506,7 @@ is the number of times to try to connect for each outgoing packet
that is received. The previous value is unchanged if this parameter
is omitted. If a value of zero is specified for
.Sq dial_attempts ,
.Nm ppp
.Nm
will keep trying until a connection is made.
.Bd -literal -offset indent
set redial 10.3 4
@ -1190,7 +1190,7 @@ add 0 0 HISADDR
HISADDR is a macro meaning the "other side"s IP number, and is
available once an IP number has been agreed (using LCP).
Now, once a connection is established,
.Nm ppp
.Nm
will delete all non-direct interface routes, and add a default route
pointing at the peers IP number. You should use the same label as the
one used in
@ -1670,6 +1670,21 @@ is taken before starting at the first number again. A value of
.Dq random
may be used here too.
.It set stopped seconds
If this option is set,
.Nm
will time out after being the the stopped state for the given number of
.Dq seconds .
This option may be useful if you see ppp failing to respond in the
stopped state. Use
.Dq set log +lcp
to make
.Nm
log state transitions.
.Pp
The default value is zero, where ppp doesn't time out in the stopped
state.
.It set server|socket TcpPort|LocalName|none [mask]
Normally, when not in interactive mode,
.Nm
@ -1778,6 +1793,9 @@ Show the current reconnect values.
.It show redial
Show the current redial values.
.It show stopped
Show the current stopped timeout.
.It show route
Show the current routing tables.
@ -1874,7 +1892,7 @@ This command gives a summary of available alias commands.
.It quit|bye [all]
Exit
.Nm ppp.
.Nm ppp .
If
.Nm
is in interactive mode or if the

6
usr.sbin/ppp/vars.c
View file

@ -17,7 +17,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: vars.c,v 1.19 1997/06/09 03:27:41 brian Exp $
* $Id: vars.c,v 1.20 1997/06/09 23:38:38 brian Exp $
*
*/
#include "fsm.h"
@ -30,7 +30,7 @@
#include "defs.h"
char VarVersion[] = "PPP Version 1.00";
char VarLocalVersion[] = "$Date: 1997/06/09 03:27:41 $";
char VarLocalVersion[] = "$Date: 1997/06/09 23:38:38 $";
/*
* Order of conf option is important. See vars.h.
@ -52,7 +52,7 @@ struct confdesc pppConfs[] = {
struct pppvars pppVars = {
DEF_MRU, DEF_MTU, 0, MODEM_SPEED, CS8, MODEM_CTSRTS, 180, 30, 3,
RECONNECT_TIMER, RECONNECT_TRIES, REDIAL_PERIOD,
NEXT_REDIAL_PERIOD, 1, MODEM_DEV, BASE_MODEM_DEV,
NEXT_REDIAL_PERIOD, 1, 0, MODEM_DEV, BASE_MODEM_DEV,
OPEN_ACTIVE, LOCAL_NO_AUTH,0
};

4
usr.sbin/ppp/vars.h
View file

@ -15,7 +15,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: vars.h,v 1.20 1997/07/14 01:41:35 brian Exp $
* $Id: vars.h,v 1.21 1997/08/17 20:38:45 brian Exp $
*
* TODO:
*/
@ -68,6 +68,7 @@ struct pppvars {
int redial_timeout; /* Redial timeout value */
int redial_next_timeout; /* Redial next timeout value */
int dial_tries; /* Dial attempts before giving up, 0 == inf */
int stopped_timeout; /* Timeout in ST_STOPPED */
char modem_dev[40]; /* Name of device / host:port */
char *base_modem_dev; /* Pointer to base of modem_dev */
int open_mode; /* LCP open mode */
@ -118,6 +119,7 @@ struct pppvars {
#define VarRedialTimeout pppVars.redial_timeout
#define VarRedialNextTimeout pppVars.redial_next_timeout
#define VarDialTries pppVars.dial_tries
#define VarStoppedTimeout pppVars.stopped_timeout
#define VarTerm pppVars.termfp
#define VarAliasHandlers pppVars.handler