[build] Rename gPXE to iPXE

Access to the gpxe.org and etherboot.org domains and associated
resources has been revoked by the registrant of the domain.  Work
around this problem by renaming project from gPXE to iPXE, and
updating URLs to match.

Also update README, LOG and COPYRIGHTS to remove obsolete information.

Signed-off-by: Michael Brown <mcb30@ipxe.org>

1 files changed, 92 insertions, 0 deletions

diff --git a/src/include/ipxe/dns.h b/src/include/ipxe/dns.h
new file mode 100644
index 000000000..1c427601a
--- /dev/null
+++ b/src/include/ipxe/dns.h
@@ -0,0 +1,92 @@
+#ifndef _IPXE_DNS_H
+#define _IPXE_DNS_H
+
+/** @file
+ *
+ * DNS protocol
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <ipxe/in.h>
+
+/*
+ * Constants
+ *
+ */
+
+#define DNS_TYPE_A		1
+#define DNS_TYPE_CNAME		5
+#define DNS_TYPE_ANY		255
+
+#define DNS_CLASS_IN		1
+#define DNS_CLASS_CS		2
+#define DNS_CLASS_CH		3
+#define DNS_CLASS_HS		4
+
+#define DNS_FLAG_QUERY		( 0x00 << 15 )
+#define DNS_FLAG_RESPONSE	( 0x01 << 15 )
+#define DNS_FLAG_QR(flags)	( (flags) & ( 0x01 << 15 ) )
+#define DNS_FLAG_OPCODE_QUERY	( 0x00 << 11 )
+#define DNS_FLAG_OPCODE_IQUERY	( 0x01 << 11 )
+#define DNS_FLAG_OPCODE_STATUS	( 0x02 << 11 )
+#define DNS_FLAG_OPCODE(flags)	( (flags) & ( 0x0f << 11 ) )
+#define DNS_FLAG_RD		( 0x01 << 8 )
+#define DNS_FLAG_RA		( 0x01 << 7 )
+#define DNS_FLAG_RCODE_OK	( 0x00 << 0 )
+#define DNS_FLAG_RCODE_NX	( 0x03 << 0 )
+#define DNS_FLAG_RCODE(flags)	( (flags) & ( 0x0f << 0 ) )
+
+#define	DNS_PORT		53
+#define	DNS_MAX_RETRIES		3
+#define	DNS_MAX_CNAME_RECURSION	0x30
+
+/*
+ * DNS protocol structures
+ *
+ */
+struct dns_header {
+	uint16_t	id;
+	uint16_t	flags;
+	uint16_t	qdcount;
+	uint16_t	ancount;
+	uint16_t	nscount;
+	uint16_t	arcount;
+} __attribute__ (( packed ));
+
+struct dns_query_info {
+	uint16_t	qtype;
+	uint16_t	qclass;
+} __attribute__ (( packed ));
+
+struct dns_query {
+	struct dns_header dns;
+	char		payload[ 256 + sizeof ( struct dns_query_info ) ];
+} __attribute__ (( packed ));
+
+struct dns_rr_info_common {
+	uint16_t	type;
+	uint16_t	class;
+	uint32_t	ttl;
+	uint16_t	rdlength;
+} __attribute__ (( packed ));
+
+struct dns_rr_info_a {
+	struct dns_rr_info_common common;
+	struct in_addr in_addr;
+} __attribute__ (( packed ));
+
+struct dns_rr_info_cname {
+	struct dns_rr_info_common common;
+	char cname[0];
+} __attribute__ (( packed ));
+
+union dns_rr_info {
+	struct dns_rr_info_common common;
+	struct dns_rr_info_a a;
+	struct dns_rr_info_cname cname;
+};
+
+#endif /* _IPXE_DNS_H */