Get rid of OFP_MAXLEN.

Statistics or vendor extensions can fill up the whole 64 kB.

include/openflow.h

@@ -60,11 +60,6 @@
 #define OFP_PACKED              /* SWIG doesn't understand __attribute. */
 #endif
 
-/* Maximum length of a OpenFlow packet. */
-#define OFP_MAXLEN (sizeof(struct ofp_switch_features) \
-        + (sizeof(struct ofp_phy_port) * OFPP_MAX) + 200)
-
-
 /* The most significant bit being set in the version field indicates an
  * experimental OpenFlow version.  
  */

lib/dpif.c

@@ -111,7 +111,7 @@ static const struct nl_policy openflow_policy[] = {
     [DP_GENL_A_DP_IDX] = { .type = NL_A_U32 },
     [DP_GENL_A_OPENFLOW] = { .type = NL_A_UNSPEC,
                               .min_len = sizeof(struct ofp_header),
-                              .max_len = OFP_MAXLEN },
+                              .max_len = 65535 },
 };
 
 /* Tries to receive an openflow message from the kernel on 'sock'.  If