defs moved to ppp-comp.h

This commit is contained in:
Paul Mackerras 1995-04-24 06:01:18 +00:00
parent 9abf2cd6f7
commit cd28744f82
2 changed files with 32 additions and 61 deletions

View File

@ -26,11 +26,12 @@
*/
#ifndef lint
static char rcsid[] = "$Id: ccp.c,v 1.6 1994/10/24 04:31:11 paulus Exp $";
static char rcsid[] = "$Id: ccp.c,v 1.7 1995/04/24 06:01:18 paulus Exp $";
#endif
#include <syslog.h>
#include <sys/ioctl.h>
#include <net/ppp-comp.h>
#include "pppd.h"
#include "fsm.h"
@ -75,25 +76,6 @@ static fsm_callbacks ccp_callbacks = {
"CCP"
};
/*
* Length of configuration options, which describe possible
* compression methods.
*/
#define CILEN_BSD 3
/*
* Configuration option values for compression methods.
*/
#define CI_BSD_COMPRESS 0x21
/*
* Information relating to BSD Compress configuration options.
*/
#define BSD_NBITS(x) ((x) & 0x1F)
#define BSD_VERSION(x) ((x) >> 5)
#define BSD_CURRENT_VERSION 1
#define BSD_MAKE_OPT(v, n) (((v) << 5) | (n))
/*
* Do we want / did we get any compression?
*/
@ -212,15 +194,15 @@ ccp_extcode(f, code, id, p, len)
int len;
{
switch (code) {
case RESETREQ:
case CCP_RESETREQ:
if (f->state != OPENED)
break;
/* send a reset-ack, which the transmitter will see and
reset its compression state. */
fsm_sdata(f, RESETACK, id, NULL, 0);
fsm_sdata(f, CCP_RESETACK, id, NULL, 0);
break;
case RESETACK:
case CCP_RESETACK:
if (ccp_localstate[f->unit] & RACK_PENDING && id == f->reqid) {
ccp_localstate[f->unit] &= ~(RACK_PENDING | RREQ_REPEAT);
UNTIMEOUT(ccp_rack_timeout, (caddr_t) f);
@ -258,9 +240,9 @@ ccp_resetci(f)
*go = ccp_wantoptions[f->unit];
if (go->bsd_compress) {
opt_buf[0] = CI_BSD_COMPRESS;
opt_buf[1] = CILEN_BSD;
opt_buf[1] = CILEN_BSD_COMPRESS;
opt_buf[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits);
if (!ccp_test(f->unit, opt_buf, CILEN_BSD, 0))
if (!ccp_test(f->unit, opt_buf, CILEN_BSD_COMPRESS, 0))
go->bsd_compress = 0;
}
}
@ -274,7 +256,7 @@ ccp_cilen(f)
{
ccp_options *go = &ccp_gotoptions[f->unit];
return (go->bsd_compress? CILEN_BSD: 0);
return (go->bsd_compress? CILEN_BSD_COMPRESS: 0);
}
/*
@ -291,10 +273,10 @@ ccp_addci(f, p, lenp)
if (go->bsd_compress) {
p[0] = CI_BSD_COMPRESS;
p[1] = CILEN_BSD;
p[1] = CILEN_BSD_COMPRESS;
p[2] = BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits);
if (ccp_test(f->unit, p, CILEN_BSD, 0))
p += CILEN_BSD;
if (ccp_test(f->unit, p, CILEN_BSD_COMPRESS, 0))
p += CILEN_BSD_COMPRESS;
else
go->bsd_compress = 0;
}
@ -314,11 +296,12 @@ ccp_ackci(f, p, len)
ccp_options *go = &ccp_gotoptions[f->unit];
if (go->bsd_compress) {
if (len < CILEN_BSD || p[0] != CI_BSD_COMPRESS || p[1] != CILEN_BSD
if (len < CILEN_BSD_COMPRESS
|| p[0] != CI_BSD_COMPRESS || p[1] != CILEN_BSD_COMPRESS
|| p[2] != BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits))
return 0;
p += CILEN_BSD;
len -= CILEN_BSD;
p += CILEN_BSD_COMPRESS;
len -= CILEN_BSD_COMPRESS;
}
if (len != 0)
return 0;
@ -342,8 +325,8 @@ ccp_nakci(f, p, len)
memset(&no, 0, sizeof(no));
try = *go;
if (go->bsd_compress && !no.bsd_compress && len >= CILEN_BSD
&& p[0] == CI_BSD_COMPRESS && p[1] == CILEN_BSD) {
if (go->bsd_compress && !no.bsd_compress && len >= CILEN_BSD_COMPRESS
&& p[0] == CI_BSD_COMPRESS && p[1] == CILEN_BSD_COMPRESS) {
no.bsd_compress = 1;
/*
* Peer wants us to use a different number of bits
@ -353,8 +336,8 @@ ccp_nakci(f, p, len)
try.bsd_compress = 0;
else if (BSD_NBITS(p[2]) < go->bsd_bits)
try.bsd_bits = BSD_NBITS(p[2]);
p += CILEN_BSD;
len -= CILEN_BSD;
p += CILEN_BSD_COMPRESS;
len -= CILEN_BSD_COMPRESS;
}
/*
@ -383,13 +366,13 @@ ccp_rejci(f, p, len)
try = *go;
if (go->bsd_compress && len >= CILEN_BSD
&& p[0] == CI_BSD_COMPRESS && p[1] == CILEN_BSD) {
if (go->bsd_compress && len >= CILEN_BSD_COMPRESS
&& p[0] == CI_BSD_COMPRESS && p[1] == CILEN_BSD_COMPRESS) {
if (p[2] != BSD_MAKE_OPT(BSD_CURRENT_VERSION, go->bsd_bits))
return 0;
try.bsd_compress = 0;
p += CILEN_BSD;
len -= CILEN_BSD;
p += CILEN_BSD_COMPRESS;
len -= CILEN_BSD_COMPRESS;
}
if (len != 0)
@ -438,7 +421,7 @@ ccp_reqci(f, p, lenp, dont_nak)
switch (type) {
case CI_BSD_COMPRESS:
if (!ao->bsd_compress || clen != CILEN_BSD) {
if (!ao->bsd_compress || clen != CILEN_BSD_COMPRESS) {
newret = CONFREJ;
break;
}
@ -451,7 +434,7 @@ ccp_reqci(f, p, lenp, dont_nak)
nb = ao->bsd_bits;
} else if (nb < MIN_BSD_BITS) {
newret = CONFREJ;
} else if (!ccp_test(f->unit, p, CILEN_BSD, 1)) {
} else if (!ccp_test(f->unit, p, CILEN_BSD_COMPRESS, 1)) {
if (nb > MIN_BSD_BITS) {
--nb;
newret = CONFNAK;
@ -471,6 +454,8 @@ ccp_reqci(f, p, lenp, dont_nak)
if (!(newret == CONFACK || newret == CONFNAK && ret == CONFREJ)) {
/* we're returning this option */
if (newret == CONFREJ && ret == CONFNAK)
retp = p0;
ret = newret;
if (p != retp)
BCOPY(p, retp, clen);
@ -571,10 +556,10 @@ ccp_printpkt(p, plen, printer, arg)
optend = p + optlen;
switch (code) {
case CI_BSD_COMPRESS:
if (optlen >= CILEN_BSD) {
if (optlen >= CILEN_BSD_COMPRESS) {
printer(arg, "bsd v%d %d", BSD_VERSION(p[2]),
BSD_NBITS(p[2]));
p += CILEN_BSD;
p += CILEN_BSD_COMPRESS;
}
break;
}
@ -627,7 +612,7 @@ ccp_datainput(unit, pkt, len)
* acknowledgement to a previous reset-request.
*/
if (!(ccp_localstate[f->unit] & RACK_PENDING)) {
fsm_sdata(f, RESETREQ, f->reqid = ++f->id, NULL, 0);
fsm_sdata(f, CCP_RESETREQ, f->reqid = ++f->id, NULL, 0);
TIMEOUT(ccp_rack_timeout, (caddr_t) f, RACKTIMEOUT);
ccp_localstate[f->unit] |= RACK_PENDING;
} else
@ -646,7 +631,7 @@ ccp_rack_timeout(arg)
fsm *f = (fsm *) arg;
if (f->state == OPENED && ccp_localstate[f->unit] & RREQ_REPEAT) {
fsm_sdata(f, RESETREQ, f->reqid, NULL, 0);
fsm_sdata(f, CCP_RESETREQ, f->reqid, NULL, 0);
TIMEOUT(ccp_rack_timeout, (caddr_t) f, RACKTIMEOUT);
ccp_localstate[f->unit] &= ~RREQ_REPEAT;
} else

View File

@ -24,28 +24,14 @@
* OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
* OR MODIFICATIONS.
*
* $Id: ccp.h,v 1.3 1994/10/18 02:07:33 paulus Exp $
* $Id: ccp.h,v 1.4 1995/04/24 06:00:54 paulus Exp $
*/
/*
* Compression algorithms = configuration options
*/
#define CI_BSD_COMPRESS 0x21 /* BSD Compress */
/*
* Extra codes for CCP.
*/
#define RESETREQ 14
#define RESETACK 15
typedef struct ccp_options {
u_int bsd_compress: 1; /* do BSD Compress? */
u_short bsd_bits; /* # bits/code for BSD Compress */
} ccp_options;
#define MIN_BSD_BITS 9
#define MAX_BSD_BITS 15
extern fsm ccp_fsm[];
extern ccp_options ccp_wantoptions[];
extern ccp_options ccp_gotoptions[];