Zilog EZ80F91GA - Manual (Page 91)

UM024502-1012 ZGATE Logging Page
ZGATE Embedded Security Development Kit
User Manual
79
ZGATE_add_eth_frame
Function Prototype
INT16 ZGATE_add_eth_frame( INT32 FrameType );
Parameters
FrameType Ethernet frame type to be added to the Ethernet frame type static
filtering list. The value of FrameType must be between 0 and
65535.
Return Value
TRUE FrameType was successfully added to the Ethernet frame type
static filtering list.
FALSE FrameType is invalid, already exists in the Ethernet frame type
static filtering list, the list is full or the Ethernet frame type filter
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 add an entry to the Ethernet Frame Type static filtering list. Entries
cannot be added to the list if the Ethernet Frame Type filter is disabled.