From eeb422fed8735188e4e141578d0383ae57ba8343 Mon Sep 17 00:00:00 2001
From: amurai <amurai@FreeBSD.org>
Date: Sun, 26 Feb 1995 12:18:08 +0000
Subject: New user Process PPP based on iij-ppp0.94beta2.

   o Supporting SYNC SIO device (But need a device driver)
     - add "set speed sync"
   o Fixing bug for Predictor-1 function.
   o Add new parameter that re-sent interval for set timeout commands.
   o Improving RTT (Round Trip Time) and reducing processor time.
     - Previous Timer service was using polling, and now using
       SIGALRM ;-)
     - A 0.94beta2 will not work correctly....

   -- Follows are additinal feature not including 0.94beta2
   o Support Proxy ARP
     - add "enable/disable proxy" commands
   o Marging common routine in CHAP/PAP.
   o Enhancing LCP/IPCP log information.
   o Support local Authfication connection on port 300x and tty.
     - You can set up pair of your "hostname -s" and
       password in ppp.secret. if either ppp.secret file nor
       your hostname line don't exist, It will notify a message
       and working as same as previous version.(Backword compatibility)
     - If you did set up them, It's allow connection but nothing to do
       except help and passwd command.
     - add "passwd yourpasswd" commands
   o Support afilter - keep Alive filter that a packet can send/receiving
     according to ifilter/ofilter but doesn't count it as preventing idle
     timer expires.
     - Same syntax of other filters.
   o Fixing bugs reported by current user for previous one. Thanks !!

Reviewed by: Atsushi Murai (amurai@spec.co.jp)
---
 usr.sbin/ppp/slcompress.c | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

(limited to 'usr.sbin/ppp/slcompress.c')

diff --git a/usr.sbin/ppp/slcompress.c b/usr.sbin/ppp/slcompress.c
index b3c6403..f3d57ce 100644
--- a/usr.sbin/ppp/slcompress.c
+++ b/usr.sbin/ppp/slcompress.c
@@ -18,7 +18,7 @@
  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  *
  * $Id:$
- *
+ * 
  *	Van Jacobson (van@helios.ee.lbl.gov), Dec 31, 1989:
  *	- Initial distribution.
  */
@@ -43,8 +43,6 @@ struct slstat slstat;
 #define ovbcopy bcopy
 #endif
 
-static int reason1, reason2, reason3, reason4, reason5;
-
 void
 sl_compress_init(comp)
 	struct slcompress *comp;
@@ -214,7 +212,6 @@ sl_compress_tcp(m, ip, comp, compress_cid)
 		hlen <<= 2;
 		if (hlen > m->cnt)
 			return(TYPE_IP);
-reason1++;
 		goto uncompressed;
 
 	found:
@@ -256,7 +253,6 @@ reason1++;
 	     BCMP(ip + 1, &cs->cs_ip + 1, (deltaS - 5) << 2)) ||
 	    (THOFFSET(th) > 5 &&
 	     BCMP(th + 1, oth + 1, (THOFFSET(th) - 5) << 2))) {
-reason2++;
 		goto uncompressed;
 	}
 
@@ -275,7 +271,6 @@ reason2++;
 		 * implementation should never do this but RFC793
 		 * doesn't prohibit the change so we have to deal
 		 * with it. */
-reason3++;
 		 goto uncompressed;
 	}
 
@@ -288,7 +283,6 @@ reason3++;
 	deltaA = ntohl(th->th_ack) - ntohl(oth->th_ack);
 	if (deltaA) {
 		if (deltaA > 0xffff) {
-reason4++;
 			goto uncompressed;
 		}
 		ENCODE(deltaA);
@@ -298,7 +292,6 @@ reason4++;
 	deltaS = ntohl(th->th_seq) - ntohl(oth->th_seq);
 	if (deltaS) {
 		if (deltaS > 0xffff) {
-			reason4++;
 			goto uncompressed;
 		}
 		ENCODE(deltaS);
@@ -328,7 +321,6 @@ reason4++;
 		 * actual changes match one of our special case encodings --
 		 * send packet uncompressed.
 		 */
-reason5++;
 		goto uncompressed;
 
 	case NEW_S|NEW_A:
@@ -464,7 +456,7 @@ sl_uncompress_tcp(bufp, len, type, comp)
 	if (changes & NEW_C) {
 		/* Make sure the state index is in range, then grab the state.
 		 * If we have a good state index, clear the 'discard' flag. */
-		if (*cp >= MAX_STATES)
+		if (*cp >= MAX_STATES || comp->last_recv == 255)
 			goto bad;
 
 		comp->flags &=~ SLF_TOSS;
@@ -584,6 +576,5 @@ ReportCompress()
 	slstat.sls_compressedin, slstat.sls_uncompressedin);
   printf("  %d (error),  %d (tossed)\n",
 	slstat.sls_errorin, slstat.sls_tossed);
-  printf("%d, %d, %d, %d, %d\n", reason1, reason2, reason3, reason4, reason5);
   return(1);
 }
-- 
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