X-Git-Url: http://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=include%2Flinux%2Fppp-comp.h;h=6b26896f82a269451f8886d5a2cdf4955b3bd19b;hp=1184a3353dd33c8e64377f3d778002f53d78d019;hb=51f24845526bd83a5fc30ea2e96e6ffdc3333b1b;hpb=6589bd3bbe86761cc41767a1400a69bbc985788a

diff --git a/include/linux/ppp-comp.h b/include/linux/ppp-comp.h
index 1184a33..6b26896 100644
--- a/include/linux/ppp-comp.h
+++ b/include/linux/ppp-comp.h
@@ -24,11 +24,11 @@
  * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
  * OR MODIFICATIONS.
  *
- * From: ppp-comp.h,v 1.7 1995/05/01 01:43:37 paulus Exp
+ * $Id: ppp-comp.h,v 1.7 1998/03/19 04:56:44 paulus Exp $
  */
 
 /*
- *  ==FILEVERSION 960302==
+ *  ==FILEVERSION 980319==
  *
  *  NOTE TO MAINTAINERS:
  *     If you modify this file at all, please set the above date.
@@ -50,16 +50,16 @@
 #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
-#define DO_DEFLATE	0
 
 /*
  * Structure giving methods for compression/decompression.
  */
 
-#ifdef PACKETPTR
 struct compressor {
 	int	compress_proto;	/* CCP compression protocol number */
 
@@ -107,20 +107,21 @@ struct compressor {
 	/* Return decompression statistics */
 	void	(*decomp_stat) (void *state, struct compstat *stats);
 };
-#endif /* PACKETPTR */
 
 /*
- * Return values for decompress routine.
- * We need to make these distinctions so that we can disable certain
+ * The return value from decompress routine is the length of the
+ * decompressed packet if successful, otherwise DECOMP_ERROR
+ * or DECOMP_FATALERROR if an error occurred.
+ * 
+ * We need to make this distinction so that we can disable certain
  * useful functionality, namely sending a CCP reset-request as a result
  * of an error detected after decompression.  This is to avoid infringing
  * a patent held by Motorola.
  * Don't you just lurve software patents.
  */
 
-#define DECOMP_OK		0	/* everything went OK */
-#define DECOMP_ERROR		1	/* error detected before decomp. */
-#define DECOMP_FATALERROR	2	/* error detected after decomp. */
+#define DECOMP_ERROR		-1	/* error detected before decomp. */
+#define DECOMP_FATALERROR	-2	/* error detected after decomp. */
 
 /*
  * CCP codes.
@@ -169,15 +170,11 @@ struct compressor {
 #define BSD_MAX_BITS		15	/* largest code size supported */
 
 /*
- * Definitions for other, as yet unsupported, compression methods.
+ * Definitions for Deflate.
  */
 
-#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 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
@@ -189,4 +186,13 @@ struct compressor {
 				 + 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 */