cleaned up

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

diff --git a/include/net/ppp-comp.h b/include/net/ppp-comp.h
index b97ff3cb4b98fd447255949059c0fa0ee9b0c290..adab65cd3e02bd57b3fcc93bb45daf4b33fb1717 100644 (file)
--- 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 1.10 1996/09/26 06:30:11 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 +138,27 @@ 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             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
+
+/*
+ * 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 */