Address Michael's comments.

[tcpdump] / print-arcnet.c

diff --git a/print-arcnet.c b/print-arcnet.c
index 50d7bf833389c0602d6b8b61b2be9fd841c5bcad..9531f346bff70e1610536a4f68c0f2fa4a4347ba 100644 (file)
--- a/print-arcnet.c
+++ b/print-arcnet.c
@@ -21,8 +21,8 @@
  * From: NetBSD: print-arcnet.c,v 1.2 2000/04/24 13:02:28 itojun Exp
  */
 #ifndef lint
-static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/tcpdump/print-arcnet.c,v 1.13 2002-12-19 09:39:10 guy Exp $ (LBL)";
+static const char rcsid[] _U_ =
+    "@(#) $Header: /tcpdump/master/tcpdump/print-arcnet.c,v 1.20 2005-04-06 21:32:38 mcr Exp $ (LBL)";
 #endif
 
 #ifdef HAVE_CONFIG_H
@@ -35,6 +35,7 @@ static const char rcsid[] =
 #include <pcap.h>
 
 #include "interface.h"
+#include "extract.h"
 #include "arcnet.h"
 
 static int arcnet_encap_print(u_char arctype, const u_char *p,
@@ -103,7 +104,7 @@ arcnet_print(const u_char *bp, u_int length, int phds, int flag, u_int seqid)
 /*
  * This is the top level routine of the printer.  'p' points
  * to the ARCNET header of the packet, 'h->ts' is the timestamp,
- * 'h->length' is the length of the packet off the wire, and 'h->caplen'
+ * 'h->len' is the length of the packet off the wire, and 'h->caplen'
  * is the number of bytes actually captured.
  */
 u_int
@@ -151,11 +152,11 @@ arcnet_if_print(const struct pcap_pkthdr *h, const u_char *p)
                                return (caplen);
                        }
                        flag = ap->arc_flag2;
-                       seqid = ap->arc_seqid2;
+                       seqid = EXTRACT_16BITS(&ap->arc_seqid2);
                        archdrlen = ARC_HDRNEWLEN_EXC;
                } else {
                        flag = ap->arc_flag;
-                       seqid = ap->arc_seqid;
+                       seqid = EXTRACT_16BITS(&ap->arc_seqid);
                        archdrlen = ARC_HDRNEWLEN;
                }
        }
@@ -171,8 +172,71 @@ arcnet_if_print(const struct pcap_pkthdr *h, const u_char *p)
        caplen -= archdrlen;
        p += archdrlen;
 
-       if (phds && flag && (flag & 1) == 0)
+       if (phds && flag && (flag & 1) == 0) {
+               /*
+                * This is a middle fragment.
+                */
                return (archdrlen);
+       }
+
+       if (!arcnet_encap_print(arc_type, p, length, caplen))
+               default_print(p, caplen);
+
+       return (archdrlen);
+}
+
+/*
+ * This is the top level routine of the printer.  'p' points
+ * to the ARCNET header of the packet, 'h->ts' is the timestamp,
+ * 'h->len' is the length of the packet off the wire, and 'h->caplen'
+ * is the number of bytes actually captured.  It is quite similar
+ * to the non-Linux style printer except that Linux doesn't ever
+ * supply packets that look like exception frames, it always supplies
+ * reassembled packets rather than raw frames, and headers have an
+ * extra "offset" field between the src/dest and packet type.
+ */
+u_int
+arcnet_linux_if_print(const struct pcap_pkthdr *h, const u_char *p)
+{
+       u_int caplen = h->caplen;
+       u_int length = h->len;
+       const struct arc_linux_header *ap;
+
+       int archdrlen = 0;
+       u_char arc_type;
+
+       if (caplen < ARC_LINUX_HDRLEN) {
+               printf("[|arcnet]");
+               return (caplen);
+       }
+
+       ap = (const struct arc_linux_header *)p;
+       arc_type = ap->arc_type;
+
+       switch (arc_type) {
+       default:
+               archdrlen = ARC_LINUX_HDRNEWLEN;
+               if (caplen < ARC_LINUX_HDRNEWLEN) {
+                       printf("[|arcnet]");
+                       return (caplen);
+               }
+               break;
+       case ARCTYPE_IP_OLD:
+       case ARCTYPE_ARP_OLD:
+       case ARCTYPE_DIAGNOSE:
+               archdrlen = ARC_LINUX_HDRLEN;
+               break;
+       }
+
+       if (eflag)
+               arcnet_print(p, length, 0, 0, 0);
+
+       /*
+        * Go past the ARCNET header.
+        */
+       length -= archdrlen;
+       caplen -= archdrlen;
+       p += archdrlen;
 
        if (!arcnet_encap_print(arc_type, p, length, caplen))
                default_print(p, caplen);
@@ -196,19 +260,19 @@ arcnet_encap_print(u_char arctype, const u_char *p,
 
        case ARCTYPE_IP_OLD:
        case ARCTYPE_IP:
-               ip_print(p, length);
+               ip_print(gndo, p, length);
                return (1);
 
 #ifdef INET6
        case ARCTYPE_INET6:
-               ip6_print(p, length);
+               ip6_print(gndo, p, length);
                return (1);
 #endif /*INET6*/
 
        case ARCTYPE_ARP_OLD:
        case ARCTYPE_ARP:
        case ARCTYPE_REVARP:
-               arp_print(p, length, caplen);
+               arp_print(gndo, p, length, caplen);
                return (1);
 
        case ARCTYPE_ATALK:     /* XXX was this ever used? */
@@ -217,7 +281,18 @@ arcnet_encap_print(u_char arctype, const u_char *p,
                atalk_print(p, length);
                return (1);
 
+       case ARCTYPE_IPX:
+               ipx_print(p, length);
+               return (1);
+
        default:
                return (0);
        }
 }
+
+/*
+ * Local Variables:
+ * c-style: bsd
+ * End:
+ */
+