-int dns_packet_new(DnsPacket **p, size_t mtu);
-int dns_packet_new_query(DnsPacket **p, size_t mtu);
+#define DNS_PACKET_MAKE_FLAGS(qr, opcode, aa, tc, rd, ra, ad, cd, rcode) \
+ (((uint16_t) !!qr << 15) | \
+ ((uint16_t) (opcode & 15) << 11) | \
+ ((uint16_t) !!aa << 10) | \
+ ((uint16_t) !!tc << 9) | \
+ ((uint16_t) !!rd << 8) | \
+ ((uint16_t) !!ra << 7) | \
+ ((uint16_t) !!ad << 5) | \
+ ((uint16_t) !!cd << 4) | \
+ ((uint16_t) (rcode & 15)))
+
+static inline unsigned DNS_PACKET_RRCOUNT(DnsPacket *p) {
+ return
+ (unsigned) DNS_PACKET_ANCOUNT(p) +
+ (unsigned) DNS_PACKET_NSCOUNT(p) +
+ (unsigned) DNS_PACKET_ARCOUNT(p);
+}
+
+int dns_packet_new(DnsPacket **p, DnsProtocol protocol, size_t mtu);
+int dns_packet_new_query(DnsPacket **p, DnsProtocol protocol, size_t mtu);