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Introduction to MDI

MDI interrupt handling

MDI drivers include an intr(D2mdi) entry point routine that handles device interrupts. OThe intr( ) routine handles incoming packets and may initiate transmits on transmit-complete inerrupts. Some Network Interface Controllers (NICs) generate interrupts for other reasons, such as setting a hardware multicast address; the MDI driver's intr( ) routine must be coded to handle any hardware interrupt that the NIC hardware generates.


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