X-Git-Url: https://git.ozlabs.org/?p=ppp.git;a=blobdiff_plain;f=linux%2Fbsd_comp.c;h=a52c32357d510260e1a37edfe0c40180492c2f92;hp=bb523bd240e91242caec2bad24fa4a6ac298b5df;hb=720f112b7dc1bc416c3dd1be41bc9d290d5ef7dc;hpb=3da550efb3dc7c6dfb697792f5cc8bc7c0f776e3;ds=sidebyside

diff --git a/linux/bsd_comp.c b/linux/bsd_comp.c
index bb523bd..a52c323 100644
--- a/linux/bsd_comp.c
+++ b/linux/bsd_comp.c
@@ -37,19 +37,20 @@
  */
 
 /*
- * This version is for use with contigious buffers on Linux-derived systems.
+ * This version is for use with contiguous buffers on Linux-derived systems.
  *
- *  ==FILEVERSION 5==
+ *  ==FILEVERSION 960924==
  *
  *  NOTE TO MAINTAINERS:
- *     If you modify this file at all, increment the number above.
+ *     If you modify this file at all, please set the number above to the
+ *     date of the modification as YYMMDD (year month day).
  *     bsd_comp.c is shipped with a PPP distribution as well as with
  *     the kernel; if everyone increases the FILEVERSION number above,
  *     then scripts can do the right thing when deciding whether to
  *     install a new bsd_comp.c file. Don't change the format of that
  *     line otherwise, so the installation script can recognize it.
  *
- * $Id: bsd_comp.c,v 1.3 1996/01/18 03:12:47 paulus Exp $
+ * From: bsd_comp.c,v 1.3 1994/12/08 01:59:58 paulus Exp
  */
 
 #ifndef MODULE
@@ -58,7 +59,6 @@
 
 #include <linux/module.h>
 
-#include <endian.h>
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/types.h>
@@ -77,8 +77,9 @@
 #include <asm/system.h>
 #include <asm/bitops.h>
 #include <asm/segment.h>
+#include <asm/byteorder.h>
 
-#include <net/if.h>
+#include <linux/if.h>
 
 #include <linux/if_ether.h>
 #include <linux/netdevice.h>
@@ -92,9 +93,9 @@
 #include <linux/netprotocol.h>
 #endif
 
-#include <netinet/ip.h>
-#include <netinet/tcp.h>
-#include <net/if_arp.h>
+#include <linux/ip.h>
+#include <linux/tcp.h>
+#include <linux/if_arp.h>
 
 #undef   PACKETPTR
 #define  PACKETPTR 1
@@ -141,14 +142,16 @@ struct bsd_dict {
     union {				/* hash value */
 	unsigned long	fcode;
 	struct {
-#ifndef BIG_ENDIAN_BITFIELD /* Little endian order */
+#if defined(__LITTLE_ENDIAN)		/* Little endian order */
 	    unsigned short	prefix;	/* preceding code */
 	    unsigned char	suffix; /* last character of new code */
 	    unsigned char	pad;
-#else /* Big endian order */
+#elif defined(__BIG_ENDIAN)		/* Big endian order */
 	    unsigned char	pad;
 	    unsigned char	suffix; /* last character of new code */
 	    unsigned short	prefix; /* preceding code */
+#else
+#error Endianness not defined...
 #endif
 	} hs;
     } f;
@@ -249,7 +252,6 @@ bsd_clear(struct bsd_db *db)
     db->n_bits       = BSD_INIT_BITS;
     db->bytes_out    = 0;
     db->in_count     = 0;
-    db->incomp_count = 0;
     db->ratio	     = 0;
     db->checkpoint   = CHECK_GAP;
 }
@@ -501,9 +503,7 @@ static int bsd_init (void *state, unsigned char *options,
     struct bsd_db *db = state;
     int indx;
     
-    if ((opt_len < CILEN_BSD_COMPRESS)
-	|| (options[0] != CI_BSD_COMPRESS)
-	|| (options[1] != CILEN_BSD_COMPRESS)
+    if ((opt_len != 3) || (options[0] != CI_BSD_COMPRESS) || (options[1] != 3)
 	|| (BSD_VERSION(options[2]) != BSD_CURRENT_VERSION)
 	|| (BSD_NBITS(options[2]) != db->maxbits)
 	|| (decomp && db->lens == NULL))
@@ -686,7 +686,7 @@ static int bsd_compress (void *state, unsigned char *rptr, unsigned char *obuf,
     /* Skip the input header */
     rptr  += PPP_HDRLEN;
     isize -= PPP_HDRLEN;
-    ilen   = ++isize; /* This is off by one, but that is what is in draft! */
+    ilen   = ++isize;	/* Low byte of protocol is counted as input */
 
     while (--ilen > 0)
       {
@@ -775,7 +775,7 @@ nomatch:
     
     OUTPUT(ent);		/* output the last code */
 
-    db->bytes_out    += olen;	/* Do not count bytes from here */
+    db->bytes_out    += olen - PPP_HDRLEN - BSD_OVHD;
     db->uncomp_bytes += isize;
     db->in_count     += isize;
     ++db->uncomp_count;