X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=include%2Fnet%2Fppp-comp.h;h=fe62a61f1cea008c96c90fc136a3968a1fac0fac;hp=e2579f85702acd42b78b8a533c8eae2581eb6d15;hb=0f25d6aa1330d5a4ec11086040fe465500be90f8;hpb=3f9351d1f16d272355e1958ff3038fd168f23a9b

diff --git a/include/net/ppp-comp.h b/include/net/ppp-comp.h
index e2579f8..fe62a61 100644
--- a/include/net/ppp-comp.h
+++ b/include/net/ppp-comp.h
@@ -24,7 +24,7 @@
  * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
  * OR MODIFICATIONS.
  *
- * $Id: ppp-comp.h,v 1.7 1995/05/01 01:43:37 paulus Exp $
+ * $Id: ppp-comp.h,v 1.11 1998/03/25 03:33:34 paulus Exp $
  */
 
 #ifndef _NET_PPP_COMP_H
@@ -37,6 +37,11 @@
 #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.
@@ -133,4 +138,28 @@ struct compressor {
 #define BSD_MIN_BITS		9	/* smallest code size supported */
 #define BSD_MAX_BITS		15	/* largest code size supported */
 
+/*
+ * Definitions for Deflate.
+ */
+#define CI_DEFLATE		26	/* config option for Deflate */
+#define CI_DEFLATE_DRAFT	24	/* value used in original draft RFC */
+#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
+
+/*
+ * 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 */
+
 #endif /* _NET_PPP_COMP_H */