Refactored packet API to support struct layer (using union to contain different types of encapsulation headers)

src/session/test/gtest_overload_evict_udp_sess.cpp

@@ -68,6 +68,7 @@ TEST(UDP_OVERLOAD, EVICT_OLD_SESS)
 
     // C2S REQ Packet
     printf("\n=> Packet Parse: UDP C2S REQ packet\n");
+    memset(&pkt, 0, sizeof(pkt));
     packet_parse(&pkt, (const char *)udp_pkt1_dns_req, sizeof(udp_pkt1_dns_req));
     printf("<= Packet Parse: done\n\n");
 
@@ -156,6 +157,7 @@ TEST(UDP_OVERLOAD, EVICT_NEW_SESS)
 
     // C2S REQ Packet
     printf("\n=> Packet Parse: UDP C2S REQ packet\n");
+    memset(&pkt, 0, sizeof(pkt));
     packet_parse(&pkt, (const char *)udp_pkt1_dns_req, sizeof(udp_pkt1_dns_req));
     printf("<= Packet Parse: done\n\n");