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1.Reducing cpu usage at off connection.

Browse Source 
2.Implment Redail function as working correctly.
3.Clean up a code as I notice.
4.Now, RTT getting close to 50ms with ISDN/TA 38400bps !!

Reviewed by:	amurai@spec.co.jp
Submitted by:	amurai@spec.co.jp
This commit is contained in:
Atsushi Murai 1995-03-11 15:18:55 +00:00
parent a1b8d6bad1
commit 84b8a6ebd1
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=7001
11 changed files with 138 additions and 86 deletions
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3
usr.sbin/ppp/chat.c
View File

@ -18,11 +18,12 @@
* Columbus, OH 43221
* (614)451-1883
*
* $Id:$
* $Id: chat.c,v 1.2 1995/02/26 12:17:20 amurai Exp $
*
* TODO:
* o Support more UUCP compatible control sequences.
* o Dialing shoud not block monitor process.
* o Reading modem by select should be unified into main.c
*/
#include "defs.h"
#include <ctype.h>

6
usr.sbin/ppp/filter.h
View File

@ -15,7 +15,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id:$
* $Id: filter.h,v 1.2 1995/02/26 12:17:26 amurai Exp $
*
* TODO:
*/
@ -70,6 +70,10 @@ struct filterent {
#define MAXFILTERS 20
#define FL_IN 0
#define FL_OUT 1
#define FL_DIAL 2
#define FL_KEEP 3
struct filterent ifilters[MAXFILTERS];
struct filterent ofilters[MAXFILTERS];
struct filterent dfilters[MAXFILTERS];

23
usr.sbin/ppp/ip.c
View File

@ -17,7 +17,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id:$
* $Id: ip.c,v 1.2 1995/02/26 12:17:33 amurai Exp $
*
* TODO:
* o Return ICMP message for filterd packet
@ -75,7 +75,6 @@ static void
RestartIdleTimer()
{
if (!(mode & MODE_DEDICATED) && ipKeepAlive ) {
/* StopTimer(&IdleTimer); */
StartTimer(&IdleTimer);
ipIdleSecs = 0;
}
@ -301,7 +300,7 @@ int direction;
if (direction == 0) IcmpError(pip, pri);
return(-1);
} else {
if ( FilterCheck(pip, 3) & A_DENY ) { /* Check Keep Alive filter */
if ( FilterCheck(pip, FL_KEEP ) & A_DENY ) { /* Check Keep Alive filter */
ipKeepAlive = FALSE;
} else {
ipKeepAlive = TRUE;
@ -327,7 +326,7 @@ struct mbuf *bp; /* IN: Pointer to IP pakcet */
nb += wp->cnt;
}
if (PacketCheck(tunbuff, nb, 0) < 0) {
if ( PacketCheck(tunbuff, nb, FL_IN ) < 0) {
pfree(bp);
return;
}
@ -355,7 +354,7 @@ int cnt; /* IN: Length of packet */
if (IpcpFsm.state != ST_OPENED)
return;
pri = PacketCheck(ptr, cnt, 1);
pri = PacketCheck(ptr, cnt, FL_OUT);
if (pri >= 0) {
bp = mballoc(cnt, MB_IPIN);
bcopy(ptr, MBUF_CTOP(bp), cnt);
@ -380,6 +379,20 @@ int count;
Enqueue(&IpOutputQueues[pri], bp);
}
int
IsIpEnqueued()
{
struct mqueue *queue;
int exist = FALSE;
for (queue = &IpOutputQueues[PRI_URGENT]; queue >= IpOutputQueues; queue--) {
if ( queue->qlen > 0 ) {
exist = TRUE;
break;
}
}
return( exist );
}
void
IpStartOutput()
{

4
usr.sbin/ppp/ipcp.c
View File

@ -17,7 +17,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id:$
* $Id: ipcp.c,v 1.2 1995/02/26 12:17:33 amurai Exp $
*
* TODO:
* o More RFC1772 backwoard compatibility
@ -53,7 +53,7 @@ static void IpcpLayerUp __P((struct fsm *));
static void IpcpLayerDown __P((struct fsm *));
static void IpcpInitRestartCounter __P((struct fsm *));
static struct pppTimer IpcpReportTimer;
struct pppTimer IpcpReportTimer;
static int lastInOctets, lastOutOctets;

4
usr.sbin/ppp/lcp.c
View File

@ -17,7 +17,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id:$
* $Id: lcp.c,v 1.2 1995/02/26 12:17:35 amurai Exp $
*
* TODO:
* o Validate magic number received from peer.
@ -44,6 +44,7 @@ extern void Prompt();
extern void StopIdleTimer();
extern void OsLinkdown();
extern void Cleanup();
extern struct pppTimer IpcpReportTimer;
struct lcpstate LcpInfo;
@ -322,6 +323,7 @@ static void
StopAllTimers()
{
StopTimer(&LcpReportTimer);
StopTimer(&IpcpReportTimer);
StopIdleTimer();
StopTimer(&AuthPapInfo.authtimer);
StopTimer(&AuthChapInfo.authtimer);

126
usr.sbin/ppp/main.c
View File

@ -17,7 +17,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: main.c,v 1.2 1995/02/26 12:17:41 amurai Exp $
* $Id: main.c,v 1.3 1995/02/27 10:57:50 amurai Exp $
*
* TODO:
* o Add commands for traffic summary, version display, etc.
@ -40,6 +40,7 @@
#include "ipcp.h"
#include "vars.h"
#include "auth.h"
#include "filter.h"
#define LAUTH_M1 "Warning: No password entry for this host in ppp.secret\n"
#define LAUTH_M2 "Warning: All manipulation is allowed by anyone in a world\n"
@ -551,7 +552,7 @@ DoLoop()
int ssize = sizeof(hisaddr);
u_char *cp;
u_char rbuff[MAX_MRU];
struct itimerval itimer;
int dial_up;
if (mode & MODE_DIRECT) {
modem = OpenModem(mode);
@ -564,20 +565,50 @@ DoLoop()
fflush(stdout);
timeout.tv_sec = 0;;
#ifdef SIGALRM
signal(SIGALRM, (void (*)(int))TimerService);
itimer.it_interval.tv_sec = itimer.it_value.tv_sec = 0;
itimer.it_interval.tv_usec = itimer.it_value.tv_usec = TICKUNIT;
setitimer(ITIMER_REAL, &itimer, NULL);
timeout.tv_sec = 0;
#else
timeout.tv_usec = 0;
#endif
dial_up = FALSE; /* XXXX */
for (;;) {
IpStartOutput();
if ( modem )
IpStartOutput();
FD_ZERO(&rfds); FD_ZERO(&wfds); FD_ZERO(&efds);
FD_SET(tun_in, &rfds);
/*
* If Ip packet for output is enqueued and require dial up,
* Just do it!
*/
if ( dial_up && RedialTimer.state != TIMER_RUNNING ) { /* XXX */
#ifdef DEBUG
logprintf("going to dial: modem = %d\n", modem);
#endif
modem = OpenModem(mode);
if (modem < 0) {
modem = 0; /* Set intial value for next OpenModem */
StartRedialTimer();
} else {
if (DialModem()) {
sleep(1); /* little pause to allow peer starts */
ModemTimeout();
PacketMode();
dial_up = FALSE;
} else {
CloseModem();
/* Dial failed. Keep quite during redial wait period. */
StartRedialTimer();
}
}
}
if (modem) {
FD_SET(modem, &rfds);
FD_SET(modem, &efds);
if (ModemQlen() > 0) {
FD_SET(modem, &wfds);
}
}
if (server > 0) FD_SET(server, &rfds);
/* *** IMPORTANT ***
@ -592,38 +623,40 @@ DoLoop()
TimerService();
#endif
if (modem) {
FD_SET(modem, &rfds);
FD_SET(modem, &efds);
if (ModemQlen() > 0) {
FD_SET(modem, &wfds);
}
}
FD_SET(tun_in, &rfds);
if (netfd > -1) {
FD_SET(netfd, &rfds);
FD_SET(netfd, &efds);
}
#ifndef SIGALRM
/*
* Normally, slect() will not block because modem is writable.
* In AUTO mode, select will block until we find packet from tun.
* However, we have to run ourselves while we are in redial wait state.
* Normally, select() will not block because modem is writable.
* In AUTO mode, select will block until we find packet from tun
*/
tp = (RedialTimer.state == TIMER_RUNNING)? &timeout : NULL;
i = select(tun_in+10, &rfds, &wfds, &efds, tp);
#else
/*
* When SIGALRM timer is running, a select function will be
* return -1 and EINTR after a Time Service signal hundler
* is done.
*/
i = select(tun_in+10, &rfds, &wfds, &efds, NULL);
#endif
if (i == 0) {
continue;
if ( i == 0 ) {
continue;
}
if (i < 0) {
if (errno == EINTR)
continue;
perror("select");
break;
}
if ( i < 0 ) {
if ( errno == EINTR ) {
continue; /* Got SIGALRM, Do check a queue for dailing */
}
perror("select");
break;
}
if ((netfd > 0 && FD_ISSET(netfd, &efds)) || FD_ISSET(modem, &efds)) {
logprintf("Exception detected.\n");
break;
@ -707,13 +740,14 @@ DoLoop()
}
}
}
if (FD_ISSET(tun_in, &rfds)) { /* something to read from tun */
/*
* If there are many packets queued, wait until they are drained.
*/
if (ModemQlen() > 5)
continue;
n = read(tun_in, rbuff, sizeof(rbuff));
if (n < 0) {
perror("read from tun");
@ -724,47 +758,17 @@ DoLoop()
* device until IPCP is opened.
*/
if (LcpFsm.state <= ST_CLOSED && (mode & MODE_AUTO)) {
pri = PacketCheck(rbuff, n, 2);
pri = PacketCheck(rbuff, n, FL_DIAL);
if (pri >= 0) {
if (RedialTimer.state == TIMER_RUNNING) {
/*
* We are in redial wait state. Ignore packet.
*/
continue;
}
modem = OpenModem(mode);
#ifdef DEBUG
logprintf("going to dial: modem = %d\n", modem);
#endif
if (modem < 0) {
printf("failed to open modem.\n");
Cleanup(EX_MODEM);
}
if (DialModem()) {
sleep(1); /* little pause to allow peer starts */
ModemTimeout();
PacketMode();
} else {
CloseModem();
/* Dial failed. Keep quite during redial wait period. */
/* XXX: We shoud implement re-dial */
StartRedialTimer();
continue;
}
IpEnqueue(pri, rbuff, n);
dial_up = TRUE; /* XXX */
}
continue;
}
pri = PacketCheck(rbuff, n, 1);
pri = PacketCheck(rbuff, n, FL_OUT);
if (pri >= 0)
IpEnqueue(pri, rbuff, n);
}
}
#ifdef SIGALRM
itimer.it_value.tv_usec = itimer.it_value.tv_sec = 0;
setitimer(ITIMER_REAL, &itimer, NULL);
signal(SIGALRM, SIG_DFL);
#endif
logprintf("job done.\n");
}

6
usr.sbin/ppp/modem.c
View File

@ -17,7 +17,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: modem.c,v 1.2 1995/02/26 12:17:45 amurai Exp $
* $Id: modem.c,v 1.3 1995/02/27 10:57:54 amurai Exp $
*
* TODO:
*/
@ -375,12 +375,12 @@ int mode;
if (strncmp(VarDevice, "/dev", 4) == 0) {
strcpy(uucplock, rindex(VarDevice, '/')+1);
if (uu_lock(uucplock) < 0) {
fprintf(stderr, "modem is in use.\n");
LogPrintf(LOG_PHASE, "Modem %s is in use\n", VarDevice);
return(-1);
}
modem = open(VarDevice, O_RDWR|O_NONBLOCK);
if (modem < 0) {
perror("open modem");
LogPrintf(LOG_PHASE, "Open Failed %s\n", VarDevice);
return(modem);
}
} else {

4
usr.sbin/ppp/timeout.h
View File

@ -15,7 +15,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id: timeout.h,v 1.2 1995/02/26 12:18:00 amurai Exp $
* $Id: timeout.h,v 1.4 1995/02/27 03:18:28 amurai Exp $
*
* TODO:
*/
@ -46,5 +46,7 @@ struct pppTimer *TimerList;
extern void StartTimer __P((struct pppTimer *));
extern void StopTimer __P((struct pppTimer *));
extern void TimerService __P((void));
extern void InitTimerService __P((void));
extern void TermTimerService __P((void));
extern void StartIdleTimer __P((void));
#endif /* _TIMEOUT_H_ */

42
usr.sbin/ppp/timer.c
View File

@ -17,7 +17,7 @@
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* $Id:$
* $Id: timer.c,v 1.2 1995/02/26 12:18:01 amurai Exp $
*
* TODO:
*/
@ -85,8 +85,10 @@ struct pppTimer *tp;
tp->next = t;
if (pt) {
pt->next = tp;
} else
} else {
InitTimerService();
TimerList = tp;
}
if (t)
t->rest -= tp->rest;
@ -120,10 +122,13 @@ struct pppTimer *tp;
for (t = TimerList; t != tp && t !=NULL ; t = t->next)
pt = t;
if (t) {
if (pt)
if (pt) {
pt->next = t->next;
else
} else {
TimerList = t->next;
if ( TimerList == NULL ) /* Last one ? */
TermTimerService(); /* Terminate Timer Service */
}
if (t->next)
t->next->rest += tp->rest;
} else {
@ -160,6 +165,8 @@ TimerService()
} while (tp && (tp->rest == 0));
TimerList = tp;
if ( TimerList == NULL ) /* No timers ? */
TermTimerService(); /* Terminate Timer Service */
#ifdef DEBUG
logprintf("TimerService: next is %x(%d)\n",
TimerList, TimerList? TimerList->rest : 0);
@ -222,9 +229,6 @@ u_int sleep( u_int sec )
/* Calculate timeout value for select */
to.tv_sec = sld / 1000000;
to.tv_usec = sld % 1000000;
/* Forwarding signal as normal */
kill(getpid(), SIGALRM);
}
}
}
@ -255,9 +259,29 @@ void usleep( u_int usec)
to.tv_sec = sld / 1000000;
to.tv_usec = sld % 1000000;
/* Forwarding signal as normal */
kill(getpid(), SIGALRM);
}
}
}
void InitTimerService( void ) {
struct itimerval itimer;
signal(SIGALRM, (void (*)(int))TimerService);
itimer.it_interval.tv_sec = itimer.it_value.tv_sec = 0;
itimer.it_interval.tv_usec = itimer.it_value.tv_usec = TICKUNIT;
setitimer(ITIMER_REAL, &itimer, NULL);
}
void TermTimerService( void ) {
struct itimerval itimer;
itimer.it_interval.tv_sec = itimer.it_value.tv_sec = 0;
itimer.it_value.tv_usec = itimer.it_value.tv_sec = 0;
setitimer(ITIMER_REAL, &itimer, NULL);
/*
* Notes: after disabling timer here, we will get one
* SIGALRM will be got.
*/
signal(SIGALRM, SIG_IGN);
}
#endif

2
usr.sbin/ppp/uucplock.c
View File

@ -87,7 +87,7 @@ uu_lock(ttyname)
* The process that locked the file isn't running, so
* we'll lock it ourselves
*/
if (lseek(fd, 0L, L_SET) < 0) {
if (lseek(fd, (off_t) 0, L_SET) < 0) {
(void)close(fd);
perror("lock lseek");
return(-1);

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 1.1.1.1 1995/01/31 06:29:55 amurai Exp $
* $Id: vars.h,v 1.2 1995/02/26 12:18:06 amurai Exp $
*
* TODO:
*/
@ -64,6 +64,8 @@ struct pppvars {
#define LOCAL_AUTH 0x01
#define LOCAL_NO_AUTH 0x02
u_char lauth; /* Local Authorized status */
#define DIALUP_REQ 0x01
#define DIALUP_DONE 0x02
char dial_script[200]; /* Dial script */
char login_script[200]; /* Login script */
char auth_key[50]; /* PAP/CHAP key */