afpacket: only check offloading once per iface

Instead of once per thread per iface.

src/runmode-af-packet.c

@@ -341,6 +341,11 @@ void *ParseAFPConfig(const char *iface)
         }
     }
 
+    if (GetIfaceOffloading(iface) == 1) {
+        SCLogWarning(SC_ERR_AFP_CREATE,
+                "Using AF_PACKET with GRO or LRO activated can lead to capture problems");
+    }
+
     return aconf;
 }
 

src/source-af-packet.c

@@ -1502,11 +1502,6 @@ static int AFPCreateSocket(AFPThreadVars *ptv, char *devname, int verbose)
             goto socket_err;
         }
 
-        if (GetIfaceOffloading(devname) == 1) {
-            SCLogWarning(SC_ERR_AFP_CREATE,
-                         "Using mmap mode with GRO or LRO activated can lead to capture problems");
-        }
-
         /* Allocate RX ring */
 #define DEFAULT_ORDER 3
         for (order = DEFAULT_ORDER; order >= 0; order--) {