perf: Reduce str_to_mac() and inet_addr() calls

platform/include/policy.h

@@ -8,6 +8,7 @@ extern "C"
 
 #include "utils.h"
 #include "raw_packet.h"
+#include <linux/if_ether.h>
 
 enum traffic_type
 {
@@ -97,8 +98,8 @@ struct selected_sf
 	struct throughput_metrics rx;
 	struct throughput_metrics tx;
 
-	char sf_dst_ip[16];
-	char sf_dst_mac[32];
+	in_addr_t sf_dst_ip;
+	u_char sf_dst_mac[ETH_ALEN];
 	int sf_index;
 };