Use more the EXTRACT_U_1() macro (40/n)

[tcpdump] / print-rt6.c

diff --git a/print-rt6.c b/print-rt6.c
index 8c1ff6a9b8ec92f9003d15def84c8854868d3f47..0ba3ba6616e381e31afe934cf7e247dc2d24ca28 100644 (file)
--- a/print-rt6.c
+++ b/print-rt6.c
@@ -19,22 +19,22 @@
  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  */
 
+/* \summary: IPv6 routing header printer */
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#ifdef INET6
-
-#include <tcpdump-stdinc.h>
+#include <netdissect-stdinc.h>
 
 #include <string.h>
 
-#include "ip6.h"
-
-#include "interface.h"
+#include "netdissect.h"
 #include "addrtoname.h"
 #include "extract.h"
 
+#include "ip6.h"
+
 int
 rt6_print(netdissect_options *ndo, register const u_char *bp, const u_char *bp2 _U_)
 {
@@ -43,35 +43,28 @@ rt6_print(netdissect_options *ndo, register const u_char *bp, const u_char *bp2
        register const u_char *ep;
        int i, len;
        register const struct in6_addr *addr;
-       const struct in6_addr *last_addr = NULL;
 
        dp = (const struct ip6_rthdr *)bp;
-       len = dp->ip6r_len;
 
        /* 'ep' points to the end of available data. */
        ep = ndo->ndo_snapend;
 
        ND_TCHECK(dp->ip6r_segleft);
 
+       len = dp->ip6r_len;
        ND_PRINT((ndo, "srcrt (len=%d", dp->ip6r_len)); /*)*/
        ND_PRINT((ndo, ", type=%d", dp->ip6r_type));
        ND_PRINT((ndo, ", segleft=%d", dp->ip6r_segleft));
 
        switch (dp->ip6r_type) {
-#ifndef IPV6_RTHDR_TYPE_0
-#define IPV6_RTHDR_TYPE_0 0
-#endif
-#ifndef IPV6_RTHDR_TYPE_2
-#define IPV6_RTHDR_TYPE_2 2
-#endif
        case IPV6_RTHDR_TYPE_0:
        case IPV6_RTHDR_TYPE_2:                 /* Mobile IPv6 ID-20 */
                dp0 = (const struct ip6_rthdr0 *)dp;
 
                ND_TCHECK(dp0->ip6r0_reserved);
-               if (dp0->ip6r0_reserved || ndo->ndo_vflag) {
+               if (EXTRACT_BE_U_4(dp0->ip6r0_reserved) || ndo->ndo_vflag) {
                        ND_PRINT((ndo, ", rsv=0x%0x",
-                           EXTRACT_32BITS(&dp0->ip6r0_reserved)));
+                           EXTRACT_BE_U_4(&dp0->ip6r0_reserved)));
                }
 
                if (len % 2 == 1)
@@ -83,17 +76,8 @@ rt6_print(netdissect_options *ndo, register const u_char *bp, const u_char *bp2
                                goto trunc;
 
                        ND_PRINT((ndo, ", [%d]%s", i, ip6addr_string(ndo, addr)));
-                       last_addr = addr;
                        addr++;
                }
-               /*
-                * the destination address used in the pseudo-header is that of the final
-                * destination : the last address of the routing header
-                */
-               if (last_addr != NULL) {
-                       const struct ip6_hdr *ip6 = (const struct ip6_hdr *)bp2;
-                       UNALIGNED_MEMCPY(&ip6->ip6_dst, last_addr, sizeof (struct in6_addr));
-               }
                /*(*/
                ND_PRINT((ndo, ") "));
                return((dp0->ip6r0_len + 1) << 3);
@@ -107,4 +91,3 @@ rt6_print(netdissect_options *ndo, register const u_char *bp, const u_char *bp2
        ND_PRINT((ndo, "[|srcrt]"));
        return -1;
 }
-#endif /* INET6 */