refine the previous change

[tcpdump] / print-ipcomp.c

diff --git a/print-ipcomp.c b/print-ipcomp.c
index 8cdb779da9ed39dd3609de5f841e105d4e51cb3e..67cb9fffa42f2ad897295ab5ec7a3cfc873f9172 100644 (file)
--- a/print-ipcomp.c
+++ b/print-ipcomp.c
@@ -19,11 +19,6 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
-#ifndef lint
-static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-ipcomp.c,v 1.16 2002-11-09 17:19:26 itojun Exp $";
-#endif
-
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
@@ -37,17 +32,17 @@ struct ipcomp {
        u_int8_t comp_nxt;      /* Next Header */
        u_int8_t comp_flags;    /* Length of data, in 32bit */
        u_int16_t comp_cpi;     /* Compression parameter index */
-} __attribute__((packed));
+};
 
 #if defined(HAVE_LIBZ) && defined(HAVE_ZLIB_H)
 #include <zlib.h>
 #endif
 
 #include "interface.h"
-#include "addrtoname.h"
+#include "extract.h"
 
 int
-ipcomp_print(register const u_char *bp, int *nhdr)
+ipcomp_print(register const u_char *bp, int *nhdr _U_)
 {
        register const struct ipcomp *ipcomp;
        register const u_char *ep;
@@ -57,7 +52,7 @@ ipcomp_print(register const u_char *bp, int *nhdr)
 #endif
 
        ipcomp = (struct ipcomp *)bp;
-       cpi = (u_int16_t)ntohs(ipcomp->comp_cpi);
+       cpi = EXTRACT_16BITS(&ipcomp->comp_cpi);
 
        /* 'ep' points to the end of available data. */
        ep = snapend;
@@ -86,7 +81,5 @@ ipcomp_print(register const u_char *bp, int *nhdr)
 
 #endif
 fail:
-       if (nhdr)
-               *nhdr = -1;
-       return 65536;
+       return -1;
 }