Messages in this thread | | | Date | Tue, 22 Nov 2005 15:27:57 -0700 | From | "Jeff V. Merkey" <> | Subject | Re: e1000 82571 Packet Splitting |
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Jesse Brandeburg wrote:
>this should be on netdev. > >On 11/22/05, Jeff V. Merkey <jmerkey@soleranetworks.com> wrote: > > >>I have noted that the e1000 driver is now supporting DMA splitting of >>the packet header and payload into separate pages. I also noticed >>that none of the config options enable it. Is anyone using this feature >>at present and has it even been tested on Linux? >> >> > >The 6.2.15 driver off http://prdownloads.sf.net/e1000 will enable it >by default. We've gone through our release approval, which includes >quite a bit of testing. >If the patches posted recently don't include that support, I missed >something :-) > >This is only on the 82571 and greater hardware that packet split is >supported, BTW. > > > Got it. I am merging packet capture support into the e1000 for DSFS for direct cache DMA support. I noticed the two distinct fill routines for the ring buffer. I have enabled DSFS for both with this driver. I will post patches late tonight or in the morning for the 82571 support for DSFS. I will also be posting the patches for 2.6.12, 2.6.10. 2.6.14, Suse 9 and 10.0, Red Hat ES/AS 3 and 4, and Fedora Core 2/3/4 by end of week with the packet splitting capabilities with packet capture on DSFS. This is a very good optimization and should come in handy for reducing header copies in the protocol stacks.
Jeff
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