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    SubjectRE: [PATCH] VIOC: New Network Device Driver

    -----Original Message-----
    From: Arnd Bergmann []
    Sent: Sunday, September 10, 2006 2:39 PM
    To: Misha Tomushev
    Subject: Re: [PATCH] VIOC: New Network Device Driver

    Am Friday 15 September 2006 02:15 schrieb Misha Tomushev:
    > VIOC Device Driver provides a standard device interface to the
    > fabric interconnected network used on servers designed and built by
    > Fabric 7 Systems.
    > The patch can be found at

    We recently had a discussion about tx descriptor cleanup in general.
    It would probably be more efficient to call vnic_clean_txq from the
    vioc_rx_poll() function. To do that, your tx interrupt handler
    should disable the tx interrupt line and call netif_rx_schedule,
    like you do for the receive interrupts.

    The descriptor clean-up does not contribute anything to the performance
    of the driver, it just replenishes the memory pools. It almost does not
    need interrupts. Why would we want to add more cycles to the receive
    logic, when driver is doing useful work for something that can run
    almost at any time?

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