*/
#ifndef lint
-static char rcsid[] = "$Id: lcp.c,v 1.23 1995/12/18 03:45:32 paulus Exp $";
+static char rcsid[] = "$Id: lcp.c,v 1.25 1996/04/04 03:58:24 paulus Exp $";
#endif
/*
#include "chap.h"
#include "magic.h"
-#ifdef _linux_ /* Needs ppp ioctls */
-#include <net/if.h>
-#include <linux/if_ppp.h>
-#endif
-
/* global vars */
fsm lcp_fsm[NUM_PPP]; /* LCP fsm structure (global)*/
lcp_options lcp_wantoptions[NUM_PPP]; /* Options that we want to request */
static u_char nak_buffer[PPP_MRU]; /* where we construct a nak packet */
-#ifdef _linux_
-u_int32_t idle_timer_running = 0;
-extern int idle_time_limit;
-#endif
-
/*
* Callbacks for fsm code. (CI = Configuration Information)
*/
struct protent lcp_protent = {
PPP_LCP, lcp_init, lcp_input, lcp_protrej,
lcp_lowerup, lcp_lowerdown, lcp_open, lcp_close,
- lcp_printpkt, NULL, 1, "LCP"
+ lcp_printpkt, NULL, 1, "LCP", NULL, NULL
};
int lcp_loopbackfail = DEFLOOPBACKFAIL;
/*
* This action is not strictly according to the FSM in RFC1548,
* but it does mean that the program terminates if you do a
- * lcp_close(0) in passive/silent mode when a connection hasn't
+ * lcp_close() in passive/silent mode when a connection hasn't
* been established.
*/
f->state = CLOSED;
fsm_close(&lcp_fsm[unit], reason);
}
-#ifdef _linux_
-static void IdleTimeCheck __P((caddr_t));
-
-/*
- * Timer expired for the LCP echo requests from this process.
- */
-
-static void
-RestartIdleTimer (f)
- fsm *f;
-{
- u_long delta;
- struct ppp_idle ddinfo;
-/*
- * Read the time since the last packet was received.
- */
- if (ioctl (fd, PPPIOCGIDLE, &ddinfo) < 0) {
- syslog (LOG_ERR, "ioctl(PPPIOCGIDLE): %m");
- die (1);
- }
-/*
- * Compute the time since the last packet was received. If the timer
- * has expired then disconnect the line.
- */
- delta = idle_time_limit - (u_long) ddinfo.recv_idle;
- if (((int) delta <= 0L) && (f->state == OPENED)) {
- syslog (LOG_NOTICE, "No IP frames received within idle time limit");
- lcp_close(f->unit, "Idle time limit expired"); /* Reset connection */
- phase = PHASE_TERMINATE; /* Mark it down */
- } else {
- if ((int) delta <= 0L)
- delta = (u_long) idle_time_limit;
- assert (idle_timer_running==0);
- TIMEOUT (IdleTimeCheck, (caddr_t) f, delta);
- idle_timer_running = 1;
- }
-}
-
-/*
- * IdleTimeCheck - Timer expired on the IDLE detection for IP frames
- */
-
-static void
-IdleTimeCheck (arg)
- caddr_t arg;
-{
- if (idle_timer_running != 0) {
- idle_timer_running = 0;
- RestartIdleTimer ((fsm *) arg);
- }
-}
-#endif
/*
* lcp_lowerup - The lower layer is up.
{
lcp_options *wo = &lcp_wantoptions[unit];
- sifdown(unit);
/*
* Don't use A/C or protocol compression on transmission,
* but accept A/C and protocol compressed packets
u_char cichar;
u_short cishort;
u_int32_t cilong;
- u_char *start = p;
- int plen = len;
lcp_options try; /* options to request next time */
try = *go;
bad:
LCPDEBUG((LOG_WARNING, "lcp_rejci: received bad Reject!"));
- LCPDEBUG((LOG_WARNING, "lcp_rejci: plen %d len %d off %d",
- plen, len, p - start));
return 0;
}
lcp_options *ho = &lcp_hisoptions[f->unit];
lcp_options *ao = &lcp_allowoptions[f->unit];
u_char *cip, *next; /* Pointer to current and next CIs */
- u_char cilen, citype, cichar;/* Parsed len, type, char value */
+ int cilen, citype, cichar; /* Parsed len, type, char value */
u_short cishort; /* Parsed short value */
u_int32_t cilong; /* Parse long value */
int rc = CONFACK; /* Final packet return code */
orc = CONFREJ; /* Reject bad CI */
cilen = l; /* Reject till end of packet */
l = 0; /* Don't loop again */
+ citype = 0;
goto endswitch;
}
GETCHAR(citype, p); /* Parse CI type */
lcp_echo_lowerdown(f->unit);
- sifdown(f->unit);
+ link_down(f->unit);
+
ppp_send_config(f->unit, PPP_MRU, 0xffffffff, 0, 0);
ppp_recv_config(f->unit, PPP_MRU,
(go->neg_asyncmap? go->asyncmap: 0x00000000),
go->neg_pcompression, go->neg_accompression);
peer_mru[f->unit] = PPP_MRU;
-
- link_down(f->unit);
}
printer(arg, ">");
}
break;
+ case ECHOREQ:
+ case ECHOREP:
+ case DISCREQ:
+ if (len >= 4) {
+ GETLONG(cilong, p);
+ printer(arg, " magic=0x%x", cilong);
+ p += 4;
+ len -= 4;
+ }
+ break;
}
/* print the rest of the bytes in the packet */
fsm *f;
{
if (f->state == OPENED) {
- syslog (LOG_NOTICE, "Excessive lack of response to LCP echo frames.");
+ syslog(LOG_INFO, "No response to %d echo-requests", lcp_echos_pending);
+ syslog(LOG_NOTICE, "Serial link appears to be disconnected.");
lcp_close(f->unit, "Peer not responding");
phase = PHASE_TERMINATE;
}
LcpEchoCheck (f)
fsm *f;
{
- long int delta;
-#ifdef __linux__
- struct ppp_idle ddinfo;
-/*
- * Read the time since the last packet was received.
- */
- if (ioctl (fd, PPPIOCGIDLE, &ddinfo) < 0) {
- syslog (LOG_ERR, "ioctl(PPPIOCGIDLE): %m");
- die (1);
- }
-/*
- * Compute the time since the last packet was received. If the timer
- * has expired then send the echo request and reset the timer to maximum.
- */
- delta = (long int) lcp_echo_interval - (long int) ddinfo.recv_idle;
- if (delta < 0L) {
- LcpSendEchoRequest (f);
- delta = (int) lcp_echo_interval;
- }
-
-#else /* Other implementations do not have ability to find delta */
LcpSendEchoRequest (f);
- delta = (int) lcp_echo_interval;
-#endif
-/*
- * Start the timer for the next interval.
- */
+ /*
+ * Start the timer for the next interval.
+ */
assert (lcp_echo_timer_running==0);
- TIMEOUT (LcpEchoTimeout, (caddr_t) f, (u_int32_t) delta);
+ TIMEOUT (LcpEchoTimeout, (caddr_t) f, lcp_echo_interval);
lcp_echo_timer_running = 1;
}
u_int32_t lcp_magic;
u_char pkt[4], *pktp;
-/*
- * Detect the failure of the peer at this point.
- */
+ /*
+ * Detect the failure of the peer at this point.
+ */
if (lcp_echo_fails != 0) {
if (lcp_echos_pending++ >= lcp_echo_fails) {
LcpLinkFailure(f);
lcp_echos_pending = 0;
}
}
-/*
- * Make and send the echo request frame.
- */
+
+ /*
+ * Make and send the echo request frame.
+ */
if (f->state == OPENED) {
lcp_magic = lcp_gotoptions[f->unit].magicnumber;
pktp = pkt;
PUTLONG(lcp_magic, pktp);
-
- fsm_sdata(f, ECHOREQ,
- lcp_echo_number++ & 0xFF, pkt, pktp - pkt);
+ fsm_sdata(f, ECHOREQ, lcp_echo_number++ & 0xFF, pkt, pktp - pkt);
}
}
/* If a timeout interval is specified then start the timer */
if (lcp_echo_interval != 0)
LcpEchoCheck (f);
-#ifdef _linux_
- /* If a idle time limit is given then start it */
- if (idle_time_limit != 0)
- RestartIdleTimer (f);
-#endif
}
/*
UNTIMEOUT (LcpEchoTimeout, (caddr_t) f);
lcp_echo_timer_running = 0;
}
-#ifdef _linux_
- /* If a idle time limit is running then stop it */
- if (idle_timer_running != 0) {
- UNTIMEOUT (IdleTimeCheck, (caddr_t) f);
- idle_timer_running = 0;
- }
-#endif
}
projects / ppp.git / blobdiff