X-Git-Url: https://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=include%2Fnet%2Fppp-comp.h;h=7a5246437a7d467cf989c5799c545e40eed5b3d9;hp=aa158ed16b4b2326d97ede05786443e89ccdca04;hb=ea95caea5a62d95bcc68c116a483d13e24c74f54;hpb=29660ed161d1aeafa4cb9ca3528419dedefd7170

diff --git a/include/net/ppp-comp.h b/include/net/ppp-comp.h
index aa158ed..7a52464 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 1.1 1994/08/31 23:55:58 paulus Exp $
+ * $Id: ppp-comp.h,v 1.3 1994/09/19 04:23:58 paulus Exp $
  */
 
 /*
@@ -45,6 +45,8 @@ struct compressor {
 	/* Compress a packet */
 	int	(*compress) __P((void *state, PACKET **mret,
 				 PACKET *mp, int orig_len, int max_len));
+	/* Return compression statistics */
+	void	(*comp_stat) __P((void *state, struct compstat *stats));
 
 	/* Allocate space for a decompressor (receive side) */
 	void	*(*decomp_alloc) __P((u_char *options, int opt_len));
@@ -56,12 +58,25 @@ struct compressor {
 	/* Reset a decompressor */
 	void	(*decomp_reset) __P((void *state));
 	/* Decompress a packet. */
-	PACKET	*(*decompress) __P((void *state, PACKET *mp,
-					 int hdroff));
+	int	(*decompress) __P((void *state, PACKET *mp, PACKET **dmpp));
 	/* Update state for an incompressible packet received */
 	void	(*incomp) __P((void *state, PACKET *mp));
+	/* Return decompression statistics */
+	void	(*decomp_stat) __P((void *state, struct compstat *stats));
 };
 
+/*
+ * Return values for decompress routine.
+ * We need to make these distinctions 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. */
+
 /*
  * CCP codes.
  */