Intel Extensible Firmware Interface Specification page 458

Extensible Firmware Interface Specification
Preparing the CPB
The receive filter CPB is used to change the contents multicast MAC address filter list. To leave
the multicast MAC address filter list unchanged, set the
PXE_CPBSIZE_NOT_USED
To change the multicast MAC address filter list, set
multicast MAC address filter list and set
mutlicast MAC address filter list.
typedef struct s_pxe_cpb_receive_filters {
// List of multicast MAC addresses.
// replace the existing multicast MAC address filter list.
PXE_MAC_ADDR MCastList[n];
} PXE_CPB_RECEIVE_FILTERS;
G.4.11.2 Waiting for the Command to Execute
Monitor the upper two bits (14 & 15) in the
report
PXE_STATFLAGS_COMMAND_COMPLETE
the command has not been executed by the UNDI.
StatFlags
COMMAND_COMPLETE
COMMAND_FAILED
COMMAND_QUEUED
INITIALIZE
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and to PXE_CPBADDR_NOT_USED.
CDB.CPBaddr
CDB.CPBsize
CDB.CPBaddr
CDB.StatFlags
or PXE_STATFLAGS_COMMAND_FAILED,
Reason
Command completed successfully. Check StatFlags. DB is written.
Command failed. StatCode field contains error code.
Command has been queued.
Command has been not executed or queued.
12/12/00
field to
CDB.CPBsize
to the size, in bytes, of the
to the address of the first entry in the
This list, if present, will
field. Until these bits change to
Version 1.02