| /* 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 |
