| /* SPDX-License-Identifier: GPL-2.0+ */ | |
| /* | |
| * (C) Masami Komiya <mkomiya@sonare.it> 2005 | |
| * Copyright 2009, Robin Getz <rgetz@blackfin.uclinux.org> | |
| */ | |
| #ifndef __DNS_H__ | |
| #define __DNS_H__ | |
| #define DNS_SERVICE_PORT 53 | |
| #define DNS_TIMEOUT 10000UL | |
| /* http://en.wikipedia.org/wiki/List_of_DNS_record_types */ | |
| enum dns_query_type { | |
| DNS_A_RECORD = 0x01, | |
| DNS_CNAME_RECORD = 0x05, | |
| DNS_MX_RECORD = 0x0f, | |
| }; | |
| /* | |
| * DNS network packet | |
| */ | |
| struct header { | |
| uint16_t tid; /* Transaction ID */ | |
| uint16_t flags; /* Flags */ | |
| uint16_t nqueries; /* Questions */ | |
| uint16_t nanswers; /* Answers */ | |
| uint16_t nauth; /* Authority PRs */ | |
| uint16_t nother; /* Other PRs */ | |
| unsigned char data[1]; /* Data, variable length */ | |
| } __attribute__((packed)); | |
| void dns_start(void); /* Begin DNS */ | |
| #endif |