Zilog EZ80F91GA - Manual (Page 92)

ZGATE API Reference UM024502-1012
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ZGATE Embedded Security Development Kit
User Manual
ZGATE_remove_eth_frame
Function Prototype
INT16 ZGATE_remove_eth_frame( INT32 FrameType );
Parameters
FrameType Ethernet frame type to be removed from the Ethernet frame type
static filtering list. The value of FrameType must be between 0
and 65535.
Return Value
TRUE FrameType was successfully removed from the Ethernet frame
type static filtering list.
FALSE FrameType is invalid, does not exist in the Ethernet frame type
static filtering list or Ethernet frame type filtering is disabled.
Description
When the Ethernet Frame Type filter is operating in WHITELIST (forwarding) or
BLACKLIST (blocking) Mode, it extracts the Type field from inbound Ethernet frames
and compares the frame type to entries in the Ethernet Frame Type filtering list. If a match
is found, the frame is forwarded to ZTP if the filter operates in WHITELIST Mode and
blocked from TCP if the filter operates in BLACKLIST Mode.
This API is used to remove an entry from the Ethernet Frame Type static filtering list.
Entries cannot be removed from the list if the Ethernet Frame Type filter is disabled.