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    SubjectRe: Forcedeth driver bug
    Kalin KOZHUHAROV schrieb:
    > Mikael Bouillot wrote:
    >> Hi all,
    >> I'm having trouble with the forcedeth driver in kernel version 2.6.7.
    >>> From what I can see, it seems that incoming packets sometime get stuck
    >> on their way in.
    >> What happens is this: some packet enters the NIC, and for some reason,
    >> it doesn't come out of the driver. As soon as another incoming packet
    >> gets in, both packets are handed down by the driver.
    >> It is usually invisible during normal TCP operation, as there are
    >> several packets in flight and the stuck packet gets pushed down by the
    >> one following it very soon. But for lockstep protocols like SMB, it very
    >> annoying as it means you get "blanks" of 2 to 5 seconds during the
    >> transfer.
    >> I can reproduce this very easily with a modified version of ping. I
    >> do a flood ping from another machine to the one with the nvnet NIC, but
    >> I modified ping to send a new packet if one gets "lost" only 10 seconds
    >> later instead of after 10 ms. The result is that after a couple hundred
    >> ping-pong at full speed, one ping gets stuck. After 10 seconds, another
    >> ping is sent and both pong come back.
    >> This didn't happen with the proprietary nvnet driver on kernel 2.4.24.
    >> My hardware is a nForce 2 mobo (in a shuttle SN45G barebones).
    >> Is this a know bug? If someone working on it already or should I
    >> investigate the matter further? Please CC any reply to me as I'm not on
    >> the list.
    > Search or somewhere else in LKML for "new
    > device support for forcedeth.c"
    > Try the latest patch ( forcedeth_gigabit_try17.txt was the one I tested
    > last) and report back.
    > The driver has undergone quite a lot of patching lately.
    > AFAIR, while testing it, similar effect was observed, but the it was way
    > broken anyway.

    Could you please try Linux 2.6.8-rc2 without any driver patch? It has the
    latest version of forcedeth and I am very interested in any bug reports/
    side effects of the update.

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