[dhcp] Include gPXE version number within DHCP request

diff --git a/src/Makefile b/src/Makefile
index eed91f0..147f699 100644 (file)
--- a/src/Makefile
+++ b/src/Makefile
@@ -123,6 +123,7 @@ MM_VERSION  = $(VERSION_MAJOR).$(VERSION_MINOR)
 VERSION                = $(MM_VERSION).$(VERSION_PATCH)$(EXTRAVERSION)
 CFLAGS         += -DVERSION_MAJOR=$(VERSION_MAJOR) \
                   -DVERSION_MINOR=$(VERSION_MINOR) \
+                  -DVERSION_PATCH=$(VERSION_PATCH) \
                   -DVERSION=\"$(VERSION)\"
 IDENT          = '$(@F) $(VERSION) (GPL) etherboot.org'
 version :

diff --git a/src/include/gpxe/dhcp.h b/src/include/gpxe/dhcp.h
index e89503d..cd3964c 100644 (file)
--- a/src/include/gpxe/dhcp.h
+++ b/src/include/gpxe/dhcp.h
@@ -260,6 +260,9 @@ struct dhcp_packet;
  */
 #define DHCP_EB_REVERSE_PASSWORD DHCP_ENCAP_OPT ( DHCP_EB_ENCAP, 0xc1 )
 
+/** gPXE version number */
+#define DHCP_EB_VERSION DHCP_ENCAP_OPT ( DHCP_EB_ENCAP, 0xeb )
+
 /** iSCSI primary target IQN */
 #define DHCP_ISCSI_PRIMARY_TARGET_IQN 201
 

diff --git a/src/include/gpxe/features.h b/src/include/gpxe/features.h
index e4d2921..32c3169 100644 (file)
--- a/src/include/gpxe/features.h
+++ b/src/include/gpxe/features.h
@@ -51,17 +51,16 @@
 /** @} */
 
 /** Declare a feature code for DHCP */
-#define __dhcp_feature( category )                                         \
-        __table ( uint8_t, dhcp_features, category )
+#define __dhcp_feature __table ( uint8_t, dhcp_features, 01 )
 
 /** Construct a DHCP feature table entry */
-#define DHCP_FEATURE( category, feature_opt, version )                     \
-       _DHCP_FEATURE ( category, OBJECT, feature_opt, version )
-#define _DHCP_FEATURE( category, _name, feature_opt, version )             \
-       __DHCP_FEATURE ( category, _name, feature_opt, version )
-#define __DHCP_FEATURE( category, _name, feature_opt, version )                    \
-       uint8_t __dhcp_feature_ ## _name [] __dhcp_feature ( category ) = { \
-               feature_opt, DHCP_BYTE ( version )                          \
+#define DHCP_FEATURE( feature_opt, ... )                                   \
+       _DHCP_FEATURE ( OBJECT, feature_opt, __VA_ARGS__ )
+#define _DHCP_FEATURE( _name, feature_opt, ... )                           \
+       __DHCP_FEATURE ( _name, feature_opt, __VA_ARGS__ )
+#define __DHCP_FEATURE( _name, feature_opt, ... )                          \
+       uint8_t __dhcp_feature_ ## _name [] __dhcp_feature = {              \
+               feature_opt, DHCP_OPTION ( __VA_ARGS__ )                    \
        };
 
 /** A named feature */
@@ -87,6 +86,10 @@ struct feature {
 /** Declare a feature */
 #define FEATURE( category, text, feature_opt, version )                            \
        FEATURE_NAME ( category, text );                                    \
-       DHCP_FEATURE ( category, feature_opt, version );
+       DHCP_FEATURE ( feature_opt, version );
+
+/** Declare the version number feature */
+#define FEATURE_VERSION( ... )                                             \
+       DHCP_FEATURE ( DHCP_ENCAPSULATED ( DHCP_EB_VERSION ), __VA_ARGS__ )
 
 #endif /* _GPXE_FEATURES_H */

diff --git a/src/net/udp/dhcp.c b/src/net/udp/dhcp.c
index 2134783..2ef8c08 100644 (file)
--- a/src/net/udp/dhcp.c
+++ b/src/net/udp/dhcp.c
@@ -38,6 +38,7 @@
 #include <gpxe/dhcp.h>
 #include <gpxe/dhcpopts.h>
 #include <gpxe/dhcppkt.h>
+#include <gpxe/features.h>
 
 /** @file
  *
@@ -93,6 +94,9 @@ static struct dhcp_options dhcp_request_options = {
 static uint8_t dhcp_features[0] __table_start ( uint8_t, dhcp_features );
 static uint8_t dhcp_features_end[0] __table_end ( uint8_t, dhcp_features );
 
+/** Version number feature */
+FEATURE_VERSION ( VERSION_MAJOR, VERSION_MINOR, VERSION_PATCH );
+
 /** DHCP network device descriptor */
 struct dhcp_netdev_desc {
        /** Bus type ID */