Add DNS support

[karo-tx-uboot.git] / net / dns.h

diff --git a/net/dns.h b/net/dns.h
new file mode 100644 (file)
index 0000000..277c093
--- /dev/null
+++ b/net/dns.h
@@ -0,0 +1,39 @@
+/*
+ * (C) Masami Komiya <mkomiya@sonare.it> 2005
+ *  Copyright 2009, Robin Getz <rgetz@blackfin.uclinux.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2, or (at
+ * your option) any later version.
+ */
+
+#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 */
+};
+
+extern void DnsStart(void);            /* Begin DNS */
+
+#endif