Support VJ maximum slot identifiers != 15.
Support VJ slot id compression. Previously, ppp would negotiate a max slot between 2 & 15 (if asked), and would agree to slot id compression (if asked). It would then proceed to use 16 slots and no compression anyway. The result was a rather unusable connection.
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=30187
@ -17,7 +17,7 @@
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: ipcp.c,v 1.27 1997/08/31 22:59:29 brian Exp $
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* $Id: ipcp.c,v 1.28 1997/09/03 02:08:18 brian Exp $
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*
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* TODO:
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* o More RFC1772 backwoard compatibility
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@ -40,6 +40,7 @@
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#include "loadalias.h"
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#include "vars.h"
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extern void VjInit(int);
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extern void PutConfValue();
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extern void Prompt();
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extern struct in_addr ifnetmask;
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@ -300,6 +301,10 @@ IpcpLayerUp(struct fsm * fp)
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LogPrintf(LogIPCP, "IpcpLayerUp(%d).\n", fp->state);
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snprintf(tbuff, sizeof(tbuff), "myaddr = %s ",
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inet_ntoa(IpcpInfo.want_ipaddr));
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if (IpcpInfo.his_compproto >> 16 == PROTO_VJCOMP)
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VjInit((IpcpInfo.his_compproto >> 8) & 255);
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LogPrintf(LogIsKept(LogIPCP) ? LogIPCP : LogLINK, " %s hisaddr = %s\n",
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tbuff, inet_ntoa(IpcpInfo.his_ipaddr));
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if (OsSetIpaddress(IpcpInfo.want_ipaddr, IpcpInfo.his_ipaddr, ifnetmask) < 0) {
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@ -17,7 +17,7 @@
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: main.c,v 1.80 1997/09/21 20:26:46 brian Exp $
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* $Id: main.c,v 1.81 1997/09/22 00:46:55 brian Exp $
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*
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* TODO:
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* o Add commands for traffic summary, version display, etc.
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@ -60,7 +60,7 @@
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#endif
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#endif
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extern void VjInit(), AsyncInit();
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extern void VjInit(int), AsyncInit();
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extern void AsyncInput();
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extern int SelectSystem();
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@ -501,7 +501,7 @@ PacketMode()
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return;
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}
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AsyncInit();
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VjInit();
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VjInit(15);
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LcpInit();
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IpcpInit();
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CcpInit();
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@ -17,13 +17,13 @@
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: slcompress.c,v 1.9 1997/06/09 03:27:37 brian Exp $
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* $Id: slcompress.c,v 1.10 1997/08/25 00:29:28 brian Exp $
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*
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* Van Jacobson (van@helios.ee.lbl.gov), Dec 31, 1989:
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* - Initial distribution.
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*/
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#ifndef lint
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static char const rcsid[] = "$Id: slcompress.c,v 1.9 1997/06/09 03:27:37 brian Exp $";
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static char const rcsid[] = "$Id: slcompress.c,v 1.10 1997/08/25 00:29:28 brian Exp $";
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#endif
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@ -47,17 +47,17 @@ struct slstat slstat;
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#endif
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void
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sl_compress_init(struct slcompress * comp)
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sl_compress_init(struct slcompress * comp, int max_state)
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{
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register u_int i;
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register struct cstate *tstate = comp->tstate;
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bzero((char *) comp, sizeof(*comp));
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for (i = MAX_STATES - 1; i > 0; --i) {
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for (i = max_state; i > 0; --i) {
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tstate[i].cs_id = i;
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tstate[i].cs_next = &tstate[i - 1];
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}
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tstate[0].cs_next = &tstate[MAX_STATES - 1];
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tstate[0].cs_next = &tstate[max_state];
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tstate[0].cs_id = 0;
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comp->last_cs = &tstate[0];
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comp->last_recv = 255;
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@ -359,14 +359,11 @@ sl_compress_tcp(struct mbuf * m,
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* know what order packets will go on the line. In this case, we always
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* send a "new" connection id so the receiver state stays synchronized.
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*/
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#ifdef SL_NOFASTQ
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if (comp->last_xmit == cs->cs_id) {
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if (comp->last_xmit == cs->cs_id && compress_cid) {
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hlen -= deltaS + 3;
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cp += hlen;
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*cp++ = changes;
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} else
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#endif
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{
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} else {
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comp->last_xmit = cs->cs_id;
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hlen -= deltaS + 4;
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cp += hlen;
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@ -428,7 +425,7 @@ sl_uncompress_tcp(u_char ** bufp,
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if (hlen > MAX_HDR)
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goto bad;
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BCOPY(ip, &cs->cs_ip, hlen);
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cs->cs_ip.ip_sum = 0;
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/* cs->cs_ip.ip_sum = 0; */
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cs->cs_hlen = hlen;
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INCR(sls_uncompressedin)
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return (len);
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@ -552,6 +549,7 @@ sl_uncompress_tcp(u_char ** bufp,
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{
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register u_short *bp = (u_short *) cp;
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cs->cs_ip.ip_sum = 0;
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for (changes = 0; hlen > 0; hlen -= 2)
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changes += *bp++;
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changes = (changes & 0xffff) + (changes >> 16);
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@ -1,7 +1,7 @@
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/*
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* Definitions for tcp compression routines.
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*
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* $Header: /home/ncvs/src/usr.sbin/ppp/slcompress.h,v 1.6 1997/06/09 03:27:38 brian Exp $
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* $Header: /home/ncvs/src/usr.sbin/ppp/slcompress.h,v 1.7 1997/08/25 00:29:29 brian Exp $
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*
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* Copyright (c) 1989 Regents of the University of California.
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* All rights reserved.
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@ -18,7 +18,7 @@
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: slcompress.h,v 1.6 1997/06/09 03:27:38 brian Exp $
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* $Id: slcompress.h,v 1.7 1997/08/25 00:29:29 brian Exp $
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*
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* Van Jacobson (van@helios.ee.lbl.gov), Dec 31, 1989:
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* - Initial distribution.
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@ -138,7 +138,7 @@ struct slstat {
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/* flag values */
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#define SLF_TOSS 1 /* tossing rcvd frames because of input err */
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extern void sl_compress_init(struct slcompress *);
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extern void sl_compress_init(struct slcompress *, int max_state);
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extern u_char sl_compress_tcp
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__P((struct mbuf *, struct ip *,
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struct slcompress *, int compress_cid_flag));
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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*
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* $Id: vjcomp.c,v 1.8 1997/06/09 03:27:43 brian Exp $
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* $Id: vjcomp.c,v 1.9 1997/08/25 00:29:32 brian Exp $
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*
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* TODO:
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*/
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@ -34,9 +34,9 @@
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struct slcompress cslc;
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void
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VjInit()
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VjInit(int max_state)
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{
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sl_compress_init(&cslc);
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sl_compress_init(&cslc, max_state);
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}
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void
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