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resolved: add comments to DNS_PACKET_MAKE_FLAGS() clarifying DNS vs LLMNR

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Some flags are defined differently on unicast DNS and LLMNR, let's
document this in the DNS_PACKET_MAKE_FLAGS() macro.
This commit is contained in:
Lennart Poettering 2015-08-25 18:59:40 +02:00
parent 069360a66a
commit f0258e4736
1 changed files with 9 additions and 9 deletions
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18
src/resolve/resolved-dns-packet.h
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@ -121,15 +121,15 @@ static inline uint8_t* DNS_PACKET_DATA(DnsPacket *p) {
#define DNS_PACKET_ARCOUNT(p) be16toh(DNS_PACKET_HEADER(p)->arcount)
#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)))
(((uint16_t) !!(qr) << 15) | \
((uint16_t) ((opcode) & 15) << 11) | \
((uint16_t) !!(aa) << 10) | /* on LLMNR: c */ \
((uint16_t) !!(tc) << 9) | \
((uint16_t) !!(rd) << 8) | /* on LLMNR: t */ \
((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