X-Git-Url: https://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=include%2Fnet%2Fppp-comp.h;h=61ee35e3cc882ad54924eca35f8b1934cdfd2f67;hp=b97ff3cb4b98fd447255949059c0fa0ee9b0c290;hb=00d6b31a5087fa0bb2c9cdbc95d2dcdafca9be9b;hpb=4e8378004c3f7b84cd84aaad7cadd61f7af4b72f

diff --git a/include/net/ppp-comp.h b/include/net/ppp-comp.h
index b97ff3c..61ee35e 100644
--- a/include/net/ppp-comp.h
+++ b/include/net/ppp-comp.h
@@ -24,16 +24,29 @@
  * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
  * OR MODIFICATIONS.
  *
- * $Id: ppp-comp.h,v 1.6 1995/04/24 02:41:37 paulus Exp $
+ * $Id: ppp-comp.h,v 1.9 1996/01/18 03:18:39 paulus Exp $
  */
 
 #ifndef _NET_PPP_COMP_H
 #define _NET_PPP_COMP_H
 
-#ifdef PACKETPTR
+/*
+ * The following symbols control whether we include code for
+ * various compression methods.
+ */
+#ifndef DO_BSD_COMPRESS
+#define DO_BSD_COMPRESS	1	/* by default, include BSD-Compress */
+#endif
+#ifndef DO_DEFLATE
+#define DO_DEFLATE	1	/* by default, include Deflate */
+#endif
+#define DO_PREDICTOR_1	0
+#define DO_PREDICTOR_2	0
+
 /*
  * Structure giving methods for compression/decompression.
  */
+#ifdef PACKETPTR
 struct compressor {
 	int	compress_proto;	/* CCP compression protocol number */
 
@@ -125,4 +138,24 @@ struct compressor {
 #define BSD_MIN_BITS		9	/* smallest code size supported */
 #define BSD_MAX_BITS		15	/* largest code size supported */
 
+/*
+ * Definitions for other, as yet unsupported, compression methods.
+ */
+#define CI_PREDICTOR_1		1	/* config option for Predictor-1 */
+#define CILEN_PREDICTOR_1	2	/* length of its config option */
+#define CI_PREDICTOR_2		2	/* config option for Predictor-2 */
+#define CILEN_PREDICTOR_2	2	/* length of its config option */
+
+#define CI_DEFLATE		24	/* config option for Deflate */
+#define CILEN_DEFLATE		4	/* length of its config option */
+
+#define DEFLATE_MIN_SIZE	8
+#define DEFLATE_MAX_SIZE	15
+#define DEFLATE_METHOD_VAL	8
+#define DEFLATE_SIZE(x)		(((x) >> 4) + DEFLATE_MIN_SIZE)
+#define DEFLATE_METHOD(x)	((x) & 0x0F)
+#define DEFLATE_MAKE_OPT(w)	((((w) - DEFLATE_MIN_SIZE) << 4) \
+				 + DEFLATE_METHOD_VAL)
+#define DEFLATE_CHK_SEQUENCE	0
+
 #endif /* _NET_PPP_COMP_H */