[ovs-dev] [PATCH] linux: Signal datapath that unaligned Netlink message can be received

Ben Pfaff blp at nicira.com
Mon Nov 11 15:50:14 UTC 2013


On Mon, Nov 11, 2013 at 04:36:24PM +0100, Thomas Graf wrote:
> Following commit (''netlink: Do not enforce alignment of last Netlink
> attribute''), signal the ability to receive unaligned Netlink messages
> to the datapath to enable utilization of zerocopy optimizations.
> 
> Signed-off-by: Thomas Graf <tgraf at redhat.com>

Seems OK from a userspace point of view.  I am a little concerned that
downgrading userspace without deleting and re-creating the datapath
(e.g. via "force-reload-kmod") will result in a totally broken setup
since userspace will then drop every packet from the kernel.

Acked-by: Ben Pfaff <blp at nicira.com>



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