Zilog EZ80F91GA Manuel d'utilisateur télécharger pdf (Page 67)

UM024502-1012 ZGATE Logging Page

ZGATE Embedded Security Development Kit

User Manual

ZGATE_st_filter_eth

Function Prototype

INT8 ZGATE_st_filter_eth( ether * pEthFrameHdr );

Parameters

pEthFrameHdr Pointer to the Ethernet frame header.

Return Value

ZGATE_FORWARD_PACKET The frame should be processed.

ZGATE_DO_NOT_FORWARD_PACKET The frame should be dropped.

Description

ZGATE_st_filter_eth performs static filtering of Ethernet frames based on the source

Ethernet MAC address and Ethernet frame type, if these filters are enabled. This function

is the ZGATE entry point for filtering Ethernet frames. It should only ever be called from

within the Ethernet MAC driver when an Ethernet frame is received from the network. To

learn more, see the

RxFunc routine in the RZK\Conf\emac_conf.c file.

For performance reasons, this function should not be called directly from the Ethernet

driver’s interrupt service routine. It should be called from the Ethernet driver’s RZK Inter-

rupt thread.

Note:

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Zilog EZ80F91GA Manuel d'utilisateur Page 67