TABLE_POPULATE_KEY
rc = TABLE_POPULATE_KEY(key, ct, eth_proto, conn->eth_proto);
rc = TABLE_POPULATE_KEY(key, ct, ip_proto, conn->ip_proto);
rc = TABLE_POPULATE_KEY(key, ct, src_ip, conn->src_ip6);
rc = TABLE_POPULATE_KEY(key, ct, dst_ip, conn->dst_ip6);
rc = TABLE_POPULATE_KEY(key, ct, l4_sport, conn->l4_sport);
rc = TABLE_POPULATE_KEY(key, ct, l4_dport, conn->l4_dport);
return TABLE_POPULATE_KEY(key, ct, zone, cpu_to_be16(conn->zone->zone));