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Driver
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Data & Control Using DMA
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Each driver should have their own data structure NET_DEV_DATA, which contains status information about data reception, transmission and statistics. The driver’s driver’s state structure is stored by the core and can be retrieving within any driver API functions. Figure 7-8 illustrates the structure to track and control Receive & Transmit descriptors.Anchor
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Figure 7-8 NET_DEV_DATA data structure