BSP Developer's Guide

H
Implementing a MUX-Based Network Interface Driver
Table H-2
Ioctl Commands and Data Types (Continued)
Command Function Data Type
EIOCMULTIADD Add multicast address. char*
EIOCMULTIDEL Delete multicast address. char*
EIOCMULTIGET Get multicast list. MULTI_TABLE*
EIOCPOLLSTART Set device into polling mode. NULL
EIOCPOLLSTOP Set device into interrupt mode. NULL
EIOCGFBUF Get minimum first buffer for chaining. int
EIOCGMIB2
Get the MIB-II counters from the
driver.
M2_INTERFACETBL*
Sending Data Out on the Device: endSend( )
The MUX calls your endSend( ) entry point when it has data to send out on the
device. Your endSend( ) must take the following form:
STATUS endSend
(
void* pCookie, /* device structure */
M_BLK_ID pMblk, /* data to send */
)
This function should return OK, ERROR, or END_ERR_BLOCK.
The value END_ERROR_BLOCK should be returned if the packet cannot be
transmitted at this time because it is in polling mode, or because of a lack of
resources. In either case, the packet is not freed from the mBlk chain.
The value OK is returned upon successful acceptance of the data packet. If an error
occurs then ERROR is returned and errno should be set. In these cases, the data
packet is freed from the mBlk chain.
The parameters are:
pCookie
Passes a pointer to the END_OBJ structure returned by endLoad( ).
H
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