[dhcp] Automatically generate vendor class identifier string

The vendor class identifier strings in DHCP_ARCH_VENDOR_CLASS_ID are
out of sync with the (correct) client architecture values in
DHCP_ARCH_CLIENT_ARCHITECTURE.

Fix by removing all definitions of DHCP_ARCH_VENDOR_CLASS_ID, and
instead generating the vendor class identifier string automatically
based on DHCP_ARCH_CLIENT_ARCHITECTURE and DHCP_ARCH_CLIENT_NDI.

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

src/arch/arm32/include/efi/ipxe/dhcp_arch.h

 
 #include <ipxe/dhcp.h>
 
-#define DHCP_ARCH_VENDOR_CLASS_ID				\
-	'P', 'X', 'E', 'C', 'l', 'i', 'e', 'n', 't', ':',	\
-	'A', 'r', 'c', 'h', ':', '0', '0', '0', '0', '7', ':',	\
-	'U', 'N', 'D', 'I', ':', '0', '0', '3', '0', '1', '0'
-
 #define DHCP_ARCH_CLIENT_ARCHITECTURE DHCP_CLIENT_ARCHITECTURE_ARM32
 
 #define DHCP_ARCH_CLIENT_NDI 1 /* UNDI */ , 3, 10 /* v3.10 */

src/arch/arm64/include/efi/ipxe/dhcp_arch.h

 
 #include <ipxe/dhcp.h>
 
-#define DHCP_ARCH_VENDOR_CLASS_ID				\
-	'P', 'X', 'E', 'C', 'l', 'i', 'e', 'n', 't', ':',	\
-	'A', 'r', 'c', 'h', ':', '0', '0', '0', '0', '7', ':',	\
-	'U', 'N', 'D', 'I', ':', '0', '0', '3', '0', '1', '0'
-
 #define DHCP_ARCH_CLIENT_ARCHITECTURE DHCP_CLIENT_ARCHITECTURE_ARM64
 
 #define DHCP_ARCH_CLIENT_NDI 1 /* UNDI */ , 3, 10 /* v3.10 */

src/arch/i386/include/efi/ipxe/dhcp_arch.h

 
 #include <ipxe/dhcp.h>
 
-#define DHCP_ARCH_VENDOR_CLASS_ID				\
-	'P', 'X', 'E', 'C', 'l', 'i', 'e', 'n', 't', ':',	\
-	'A', 'r', 'c', 'h', ':', '0', '0', '0', '0', '6', ':',	\
-	'U', 'N', 'D', 'I', ':', '0', '0', '3', '0', '1', '0'
-
 #define DHCP_ARCH_CLIENT_ARCHITECTURE DHCP_CLIENT_ARCHITECTURE_IA32
 
 #define DHCP_ARCH_CLIENT_NDI 1 /* UNDI */ , 3, 10 /* v3.10 */

src/arch/i386/include/pcbios/ipxe/dhcp_arch.h

 
 #include <ipxe/dhcp.h>
 
-#define DHCP_ARCH_VENDOR_CLASS_ID				\
-	'P', 'X', 'E', 'C', 'l', 'i', 'e', 'n', 't', ':',	\
-	'A', 'r', 'c', 'h', ':', '0', '0', '0', '0', '0', ':',	\
-	'U', 'N', 'D', 'I', ':', '0', '0', '2', '0', '0', '1'
-
 #define DHCP_ARCH_CLIENT_ARCHITECTURE DHCP_CLIENT_ARCHITECTURE_X86
 
 #define DHCP_ARCH_CLIENT_NDI 1 /* UNDI */ , 2, 1 /* v2.1 */

src/arch/x86_64/include/efi/ipxe/dhcp_arch.h

 
 #include <ipxe/dhcp.h>
 
-#define DHCP_ARCH_VENDOR_CLASS_ID				\
-	'P', 'X', 'E', 'C', 'l', 'i', 'e', 'n', 't', ':',	\
-	'A', 'r', 'c', 'h', ':', '0', '0', '0', '0', '9', ':',	\
-	'U', 'N', 'D', 'I', ':', '0', '0', '3', '0', '1', '0'
-
 #define DHCP_ARCH_CLIENT_ARCHITECTURE DHCP_CLIENT_ARCHITECTURE_X86_64
 
 #define DHCP_ARCH_CLIENT_NDI 1 /* UNDI */ , 3, 10 /* v3.10 */

src/arch/x86_64/include/pcbios/ipxe/dhcp_arch.h

 
 #include <ipxe/dhcp.h>
 
-#define DHCP_ARCH_VENDOR_CLASS_ID				\
-	'P', 'X', 'E', 'C', 'l', 'i', 'e', 'n', 't', ':',	\
-	'A', 'r', 'c', 'h', ':', '0', '0', '0', '0', '0', ':',	\
-	'U', 'N', 'D', 'I', ':', '0', '0', '2', '0', '0', '1'
-
 #define DHCP_ARCH_CLIENT_ARCHITECTURE DHCP_CLIENT_ARCHITECTURE_X86
 
 #define DHCP_ARCH_CLIENT_NDI 1 /* UNDI */ , 2, 1 /* v2.1 */

src/include/ipxe/dhcp.h

 /** Vendor class identifier */
 #define DHCP_VENDOR_CLASS_ID 60
 
+/** Vendor class identifier for PXE clients */
+#define DHCP_VENDOR_PXECLIENT( arch, ndi )				\
+	'P', 'X', 'E', 'C', 'l', 'i', 'e', 'n', 't', ':',		\
+	'A', 'r', 'c', 'h', ':', DHCP_VENDOR_PXECLIENT_ARCH ( arch ),	\
+	':', 'U', 'N', 'D', 'I', ':', DHCP_VENDOR_PXECLIENT_UNDI ( ndi )
+
+/** Vendor class identifier architecture for PXE clients */
+#define DHCP_VENDOR_PXECLIENT_ARCH( arch )				\
+	( '0' + ( ( (arch) / 10000 ) % 10 ) ),				\
+	( '0' + ( ( (arch) /  1000 ) % 10 ) ),				\
+	( '0' + ( ( (arch) /   100 ) % 10 ) ),				\
+	( '0' + ( ( (arch) /    10 ) % 10 ) ),				\
+	( '0' + ( ( (arch) /     1 ) % 10 ) )
+
+/** Vendor class identifier UNDI version for PXE clients */
+#define DHCP_VENDOR_PXECLIENT_UNDI( type, major, minor )		\
+	DHCP_VENDOR_PXECLIENT_UNDI_VERSION ( major ),			\
+	DHCP_VENDOR_PXECLIENT_UNDI_VERSION ( minor )
+#define DHCP_VENDOR_PXECLIENT_UNDI_VERSION( version )			\
+	( '0' + ( ( (version) /   100 ) % 10 ) ),			\
+	( '0' + ( ( (version) /    10 ) % 10 ) ),			\
+	( '0' + ( ( (version) /     1 ) % 10 ) )
+
 /** Client identifier */
 #define DHCP_CLIENT_ID 61
 

src/net/udp/dhcp.c

 	DHCP_WORD ( ETH_MAX_MTU - 20 /* IP header */ - 8 /* UDP header */ ),
 	DHCP_CLIENT_ARCHITECTURE, DHCP_WORD ( DHCP_ARCH_CLIENT_ARCHITECTURE ),
 	DHCP_CLIENT_NDI, DHCP_OPTION ( DHCP_ARCH_CLIENT_NDI ),
-	DHCP_VENDOR_CLASS_ID, DHCP_STRING ( DHCP_ARCH_VENDOR_CLASS_ID ),
+	DHCP_VENDOR_CLASS_ID,
+	DHCP_STRING ( DHCP_VENDOR_PXECLIENT ( DHCP_ARCH_CLIENT_ARCHITECTURE,
+					      DHCP_ARCH_CLIENT_NDI ) ),
 	DHCP_USER_CLASS_ID, DHCP_STRING ( 'i', 'P', 'X', 'E' ),
 	DHCP_PARAMETER_REQUEST_LIST,
 	DHCP_OPTION ( DHCP_SUBNET_MASK, DHCP_ROUTERS, DHCP_DNS_SERVERS,

src/net/udp/dhcpv6.c

 			DHCPV6_CODE ( DHCPV6_BOOTFILE_PARAM ) ),
 	DHCPV6_CODE ( DHCPV6_VENDOR_CLASS ),
 	DHCPV6_OPTION ( DHCPV6_DWORD_VALUE ( DHCPV6_VENDOR_CLASS_PXE ),
-			DHCPV6_STRING ( DHCP_ARCH_VENDOR_CLASS_ID ) ),
+			DHCPV6_STRING (
+			  DHCP_VENDOR_PXECLIENT ( DHCP_ARCH_CLIENT_ARCHITECTURE,
+						  DHCP_ARCH_CLIENT_NDI ) ) ),
 	DHCPV6_CODE ( DHCPV6_CLIENT_ARCHITECTURE ),
 	DHCPV6_WORD ( DHCP_ARCH_CLIENT_ARCHITECTURE ),
 	DHCPV6_CODE ( DHCPV6_CLIENT_NDI ),