added definitions for Deflate and Predictor

[ppp.git] / include / net / ppp-comp.h

diff --git a/include/net/ppp-comp.h b/include/net/ppp-comp.h
index e2579f85702acd42b78b8a533c8eae2581eb6d15..733205c7965153f3bfa53e82835b1dc0351bf460 100644 (file)
--- 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 1.8 1995/10/27 03:36:32 paulus Exp $
  */
 
 #ifndef _NET_PPP_COMP_H
@@ -37,6 +37,9 @@
 #ifndef DO_BSD_COMPRESS
 #define DO_BSD_COMPRESS        1       /* by default, include BSD-Compress */
 #endif
+#define DO_PREDICTOR_1 0
+#define DO_PREDICTOR_2 0
+#define DO_DEFLATE     0
 
 /*
  * Structure giving methods for compression/decompression.
@@ -133,4 +136,24 @@ 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 */