Stopping a Network Device

NetDev_Stop() is called once each time an interface is stopped.

NetDev_Stop() must perform the following operations:

1 Disable the receiver and transmitter.

2 Disable all local MAC interrupt sources.

3 Clear all local MAC interrupt status flags.

4 For DMA devices, re-initialize all receive descriptors.

5 For DMA devices, free all transmit descriptors by calling NetOS_IF_DeallocTaskPost() with the address of the transmit descriptor data areas.

6 For DMA devices, re-initialize all transmit descriptors.

7 Set perr to NET_DEV_ERR_NONE if no error occurs. Otherwise, set perr to an appropriate network device error code.