Messages in this thread |  | | Date | Wed, 18 Sep 2002 16:00:57 -0700 (PDT) | Subject | Re: [PATCH] zerocopy NFS for 2.5.36 | From | "David S. Miller" <> |
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From: Hirokazu Takahashi <taka@valinux.co.jp> Date: Wed, 18 Sep 2002 17:14:31 +0900 (JST)
1) ftp://ftp.valinux.co.jp/pub/people/taka/2.5.36/va10-hwchecksum-2.5.36.patch This patch enables HW-checksum against outgoing packets including UDP frames.
Can you explain the TCP parts? They look very wrong.
It was discussed long ago that csum_and_copy_from_user() performs better than plain copy_from_user() on x86. I do not remember all details, but I do know that using copy_from_user() is not a real improvement at least on x86 architecture.
The rest of the changes (ie. the getfrag() logic to set skb->ip_summed) looks fine.
3) ftp://ftp.valinux.co.jp/pub/people/taka/2.5.36/va-csumpartial-fix-2.5.36.patch This patch fixes the problem of x86 csum_partilal() routines which can't handle odd addressed buffers.
I've sent Linus this fix already. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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