pcap: register counters for old pcap versions as well

src/source-pcap.c

@@ -614,7 +614,21 @@ TmEcode ReceivePcapThreadInit(ThreadVars *tv, void *initdata, void **data) {
 
     ptv->datalink = pcap_datalink(ptv->pcap_handle);
 
+    ptv->capture_kernel_packets = SCPerfTVRegisterCounter("capture.kernel_packets",
+            ptv->tv,
+            SC_PERF_TYPE_UINT64,
+            "NULL");
+    ptv->capture_kernel_drops = SCPerfTVRegisterCounter("capture.kernel_drops",
+            ptv->tv,
+            SC_PERF_TYPE_UINT64,
+            "NULL");
+    ptv->capture_kernel_ifdrops = SCPerfTVRegisterCounter("capture.kernel_ifdrops",
+            ptv->tv,
+            SC_PERF_TYPE_UINT64,
+            "NULL");
+
     *data = (void *)ptv;
+
     /* Dereference config */
     pcapconfig->DerefFunc(pcapconfig);
     SCReturnInt(TM_ECODE_OK);