[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] Network Checksum Removal
On Monday 23 May 2005 10:31, Bin Ren wrote: > It seems to break the interdomain ssh and nfs on my machine. Digging > for reasons. Are you using bridge or network model? > > - Bin > > On 5/23/05, Andrew Theurer <habanero@xxxxxxxxxx> wrote: > > > I've checked in a modified version of your patch that hopefully > > > deals with propagating checksum information in both directions > > > across a virtual bridge or router. I replaced your skb flags with > > > two new ones -- proto_csum_blank and proto_csum_valid. > > > > > > The former indicates that the protocol-level checksum needs > > > filling in. This is not a problem for local processing, but the > > > flag is picked up before sending to a physical interface and > > > fixed up. > > > > > > The latter indicates that the proto-level checksum has been > > > validated since arrival at localhost (*or* that the packet > > > originated from a domU on localhost). This flag survives crossing > > > a bridge/router so we can trust it when deciding if checksum > > > validation is required. > > > > > > I'll push the patch to the bkbits repository just as soon as > > > bkbits rematerialises. :-) > > > > > > If you have any performance or stress tests that you were using > > > to test checksum offloading, it would be great to find out how > > > they perform on the checked-in version! > > > > Now that BK is up, I'll run some netperf tests before/after that > > changeset and see what we get. > > > > -Andrew > > > > _______________________________________________ > > Xen-devel mailing list > > Xen-devel@xxxxxxxxxxxxxxxxxxx > > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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