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Use otherwise-useless byte in DHCP feature option as a version number

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This commit is contained in:
Michael Brown 2007-08-02 04:36:00 +01:00
parent 0acb016840
commit 67afe84292
5 changed files with 22 additions and 10 deletions
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22
src/include/gpxe/features.h
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@ -29,19 +29,25 @@
/** AoE */
#define DHCP_EB_FEATURE_AOE 0x12
/** HTTP */
#define DHCP_EB_FEATURE_HTTP 0x13
/** HTTPS */
#define DHCP_EB_FEATURE_HTTPS 0x14
/** @} */
/** Declare a feature code for DHCP */
#define __dhcp_feature __table ( uint8_t, dhcp_features, 01 )
/** Construct a DHCP feature table entry */
#define DHCP_FEATURE( feature_opt ) \
_DHCP_FEATURE ( OBJECT, feature_opt )
#define _DHCP_FEATURE( _name, feature_opt ) \
__DHCP_FEATURE ( _name, feature_opt )
#define __DHCP_FEATURE( _name, feature_opt ) \
#define DHCP_FEATURE( feature_opt, version ) \
_DHCP_FEATURE ( OBJECT, feature_opt, version )
#define _DHCP_FEATURE( _name, feature_opt, version ) \
__DHCP_FEATURE ( _name, feature_opt, version )
#define __DHCP_FEATURE( _name, feature_opt, version ) \
uint8_t __dhcp_feature_ ## _name [] __dhcp_feature = { \
feature_opt, DHCP_BYTE ( 1 ) \
feature_opt, DHCP_BYTE ( version ) \
};
/** Declare a named feature */
@ -56,8 +62,8 @@
char * __feature_ ## _name __feature_name = text;
/** Declare a feature */
#define FEATURE( text, feature_opt ) \
#define FEATURE( text, feature_opt, version ) \
FEATURE_NAME ( text ); \
DHCP_FEATURE ( feature_opt );
DHCP_FEATURE ( feature_opt, version );
#endif /* _GPXE_FEATURES_H */

2
src/net/aoe.c
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@ -40,7 +40,7 @@
*
*/
FEATURE ( "AoE", DHCP_EB_FEATURE_AOE );
FEATURE ( "AoE", DHCP_EB_FEATURE_AOE, 1 );
struct net_protocol aoe_protocol;

3
src/net/tcp/http.c
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@ -40,8 +40,11 @@
#include <gpxe/tcpip.h>
#include <gpxe/process.h>
#include <gpxe/linebuf.h>
#include <gpxe/features.h>
#include <gpxe/http.h>
FEATURE ( "HTTP", DHCP_EB_FEATURE_HTTP, 1 );
/** HTTP receive state */
enum http_rx_state {
HTTP_RX_RESPONSE = 0,

3
src/net/tcp/https.c
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@ -27,6 +27,9 @@
#include <gpxe/open.h>
#include <gpxe/tls.h>
#include <gpxe/http.h>
#include <gpxe/features.h>
FEATURE ( "HTTPS", DHCP_EB_FEATURE_HTTPS, 1 );
/**
* Initiate an HTTPS connection

2
src/net/tcp/iscsi.c
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@ -41,7 +41,7 @@
*
*/
FEATURE ( "iSCSI", DHCP_EB_FEATURE_ISCSI );
FEATURE ( "iSCSI", DHCP_EB_FEATURE_ISCSI, 1 );
/** iSCSI initiator name (explicitly specified) */
static char *iscsi_explicit_initiator_iqn;