G.4.11 Receive Filters - Intel Extensible Firmware Interface Specification

G.4.11 Receive Filters
This command is used to read and change receive filters and, if supported, read and change the
multicast MAC address filter list.
G.4.11.1 Issuing the Command
To issue a Receive Filters command, create a CDB and fill it in as shows in the table below:
CDB Field How to initialize the CDB structure for a Receive Filters command
OpCode PXE_OPCODE_RECEIVE_FILTERS
OpFlags Set as needed.
CPBsize sizeof(PXE_CPB_RECEIVE_FILTERS)
DBsize sizeof(PXE_DB_RECEIVE_FILTERS)
Address of
CPBaddr
Address of
DBaddr
StatCode
PXE_STATCODE_INITIALIZE
StatFlags PXE_STATFLAGS_INITIALIZE
A valid interface number from zero to !PXE.IFcnt.
IFnum
Control Set as needed.
OpFlags
To read the current receive filter settings set the
•
PXE_OPFLAGS_RECEIVE_FILTER_READ
To change the current receive filter settings set one of these OpFlag bits:
•
PXE_OPFLAGS_RECEIVE_FILTER_ENABLE
•
PXE_OPFLAGS_RECEIVE_FILTER_DISABLE
When changing the receive filter settings, at least one of the OpFlag bits in this list must be
selected:
•
PXE_OPFLAGS_RECEIVE_FILTER_UNICAST
•
PXE_OPFLAGS_RECEIVE_FILTER_BROADCAST
•
PXE_OPFLAGS_RECEIVE_FILTER_FILTERED_MULTICAST
•
PXE_OPFLAGS_RECEIVE_FILTER_PROMISCUOUS
•
PXE_OPFLAGS_RECEIVE_FILTER_ALL_MULTICAST
To clear the contents of the multicast MAC address filter list, set this OpFlag:
•
PXE_OPFLAGS_RECEIVE_FILTER_RESET_MCAST_LIST
Version 1.02
PXE_CPB_RECEIVE_FILTERS
PXE_DB_RECEIVE_FILTERS
CDB.OpFlags
12/12/00
32/64-bit UNDI Specification
structure.
structure.
field to:
439