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    SubjectRe: [PATCH] tcp: splice as many packets as possible at once
    On Sun, Jan 18, 2009 at 10:19:08PM -0800, David Miller wrote:
    > From: Willy Tarreau <w@1wt.eu>
    > Date: Mon, 19 Jan 2009 07:14:20 +0100
    >
    > > On Sun, Jan 18, 2009 at 07:27:19PM -0800, David Miller wrote:
    > > > From: Herbert Xu <herbert@gondor.apana.org.au>
    > > > Date: Mon, 19 Jan 2009 14:08:44 +1100
    > > >
    > > > > One thing to note is that Myricom's driver probably uses page
    > > > > frags which means that you're not actually triggering the copy.
    > >
    > > So does this mean that the corruption problem should still there for
    > > such a driver ? I'm asking before testing, because at these speeds,
    > > validity tests are not that easy ;-)
    >
    > It ought not to, but it seems that is the case where you
    > saw the original corruptions, so hmmm...
    >
    > Actually, I see, the myri10ge driver does put up to
    > 64 bytes of the initial packet into the linear area.
    > If the IPV4 + TCP headers are less than this, you will
    > hit the corruption case even with the myri10ge driver.
    >
    > So everything checks out.

    OK, so I will modify my tools in order to perform a few checks.

    Thanks!
    Willy



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