Use nd_ types, add EXTRACT_ calls.

[tcpdump] / print-openflow.c

diff --git a/print-openflow.c b/print-openflow.c
index 9a675855302c2a0765101fce97483ab5462f1a61..3ef914323460702018225498f83d97621879678f 100644 (file)
--- a/print-openflow.c
+++ b/print-openflow.c
@@ -30,53 +30,75 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 
-#define NETDISSECT_REWORKED
+/* \summary: version-independent OpenFlow printer */
+
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
 
-#include <tcpdump-stdinc.h>
+#include <netdissect-stdinc.h>
 
-#include "interface.h"
+#include "netdissect.h"
 #include "extract.h"
 #include "openflow.h"
+#include "oui.h"
 
 static const char tstr[] = " [|openflow]";
-static const char cstr[] = " (corrupt)";
 
 #define OF_VER_1_0    0x01
 
+const struct tok onf_exp_str[] = {
+       { ONF_EXP_ONF,               "ONF Extensions"                                  },
+       { ONF_EXP_BUTE,              "Budapest University of Technology and Economics" },
+       { ONF_EXP_NOVIFLOW,          "NoviFlow"                                        },
+       { ONF_EXP_L3,                "L3+ Extensions, Vendor Neutral"                  },
+       { ONF_EXP_L4L7,              "L4-L7 Extensions"                                },
+       { ONF_EXP_WMOB,              "Wireless and Mobility Extensions"                },
+       { ONF_EXP_FABS,              "Forwarding Abstractions Extensions"              },
+       { ONF_EXP_OTRANS,            "Optical Transport Extensions"                    },
+       { 0, NULL }
+};
+
+const char *
+of_vendor_name(const uint32_t vendor)
+{
+       const struct tok *table = (vendor & 0xff000000) == 0 ? oui_values : onf_exp_str;
+       return tok2str(table, "unknown", vendor);
+}
+
 static void
 of_header_print(netdissect_options *ndo, const uint8_t version, const uint8_t type,
-                      const uint16_t length, const uint32_t xid) {
+                      const uint16_t length, const uint32_t xid)
+{
        ND_PRINT((ndo, "\n\tversion unknown (0x%02x), type 0x%02x, length %u, xid 0x%08x",
               version, type, length, xid));
 }
 
 /* Print a single OpenFlow message. */
 static const u_char *
-of_header_body_print(netdissect_options *ndo, const u_char *cp, const u_char *ep) {
+of_header_body_print(netdissect_options *ndo, const u_char *cp, const u_char *ep)
+{
        uint8_t version, type;
        uint16_t length;
        uint32_t xid;
 
        if (ep < cp + OF_HEADER_LEN)
-               goto corrupt;
+               goto invalid;
        /* version */
-       ND_TCHECK2(*cp, 1);
-       version = *cp;
+       ND_TCHECK_1(cp);
+       version = EXTRACT_U_1(cp);
        cp += 1;
        /* type */
-       ND_TCHECK2(*cp, 1);
-       type = *cp;
+       ND_TCHECK_1(cp);
+       type = EXTRACT_U_1(cp);
        cp += 1;
        /* length */
-       ND_TCHECK2(*cp, 2);
-       length = EXTRACT_16BITS(cp);
+       ND_TCHECK_2(cp);
+       length = EXTRACT_BE_U_2(cp);
        cp += 2;
        /* xid */
-       ND_TCHECK2(*cp, 4);
-       xid = EXTRACT_32BITS(cp);
+       ND_TCHECK_4(cp);
+       xid = EXTRACT_BE_U_4(cp);
        cp += 4;
        /* Message length includes the header length and a message always includes
         * the basic header. A message length underrun fails decoding of the rest of
@@ -85,7 +107,7 @@ of_header_body_print(netdissect_options *ndo, const u_char *cp, const u_char *ep
         * segment. */
        if (length < OF_HEADER_LEN) {
                of_header_print(ndo, version, type, length, xid);
-               goto corrupt;
+               goto invalid;
        }
        /* Decode known protocol versions further without printing the header (the
         * type decoding is version-specific. */
@@ -94,13 +116,13 @@ of_header_body_print(netdissect_options *ndo, const u_char *cp, const u_char *ep
                return of10_header_body_print(ndo, cp, ep, type, length, xid);
        default:
                of_header_print(ndo, version, type, length, xid);
-               ND_TCHECK2(*cp, length - OF_HEADER_LEN);
+               ND_TCHECK_LEN(cp, length - OF_HEADER_LEN);
                return cp + length - OF_HEADER_LEN; /* done with current message */
        }
 
-corrupt: /* fail current packet */
-       ND_PRINT((ndo, "%s", cstr));
-       ND_TCHECK2(*cp, ep - cp);
+invalid: /* fail current packet */
+       ND_PRINT((ndo, "%s", istr));
+       ND_TCHECK_LEN(cp, ep - cp);
        return ep;
 trunc:
        ND_PRINT((ndo, "%s", tstr));
@@ -110,7 +132,8 @@ trunc:
 /* Print a TCP segment worth of OpenFlow messages presuming the segment begins
  * on a message boundary. */
 void
-openflow_print(netdissect_options *ndo, const u_char *cp, const u_int len) {
+openflow_print(netdissect_options *ndo, const u_char *cp, const u_int len)
+{
        const u_char *ep = cp + len;
 
        ND_PRINT((ndo, ": OpenFlow"));