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1 | /* |
2 | * (C) Masami Komiya <mkomiya@sonare.it> 2005 | |
3 | * Copyright 2009, Robin Getz <rgetz@blackfin.uclinux.org> | |
4 | * | |
1a459660 | 5 | * SPDX-License-Identifier: GPL-2.0+ |
1a32bf41 RG |
6 | */ |
7 | ||
8 | #ifndef __DNS_H__ | |
9 | #define __DNS_H__ | |
10 | ||
11 | #define DNS_SERVICE_PORT 53 | |
12 | #define DNS_TIMEOUT 10000UL | |
13 | ||
14 | /* http://en.wikipedia.org/wiki/List_of_DNS_record_types */ | |
15 | enum dns_query_type { | |
16 | DNS_A_RECORD = 0x01, | |
17 | DNS_CNAME_RECORD = 0x05, | |
18 | DNS_MX_RECORD = 0x0f, | |
19 | }; | |
20 | ||
21 | /* | |
22 | * DNS network packet | |
23 | */ | |
24 | struct header { | |
25 | uint16_t tid; /* Transaction ID */ | |
26 | uint16_t flags; /* Flags */ | |
27 | uint16_t nqueries; /* Questions */ | |
28 | uint16_t nanswers; /* Answers */ | |
29 | uint16_t nauth; /* Authority PRs */ | |
30 | uint16_t nother; /* Other PRs */ | |
31 | unsigned char data[1]; /* Data, variable length */ | |
32 | }; | |
33 | ||
786eac5f | 34 | void dns_start(void); /* Begin DNS */ |
1a32bf41 RG |
35 | |
36 | #endif |