cleaned up

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

diff --git a/include/linux/ppp-comp.h b/include/linux/ppp-comp.h
index 1184a3353dd33c8e64377f3d778002f53d78d019..b6792cf8a9d42e0c88aa93a8e05a97e9a00de8aa 100644 (file)
--- a/include/linux/ppp-comp.h
+++ b/include/linux/ppp-comp.h
@@ -28,7 +28,7 @@
  */
 
 /*
- *  ==FILEVERSION 960302==
+ *  ==FILEVERSION 960918==
  *
  *  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 */
 
@@ -107,18 +107,19 @@ 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. */
 
@@ -169,14 +170,9 @@ 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 CILEN_DEFLATE          4       /* length of its config option */
 
@@ -189,4 +185,13 @@ 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 */