On Tue, 2010-01-26 at 14:50 -0600, Anthony Liguori wrote: > On 01/26/2010 02:47 PM, Anthony Liguori wrote: > > On 01/26/2010 02:40 PM, Sridhar Samudrala wrote: > >> This patch adds raw socket backend to qemu and is based on Or Gerlitz's > >> patch re-factored and ported to the latest qemu-kvm git tree. > >> It also includes support for vnet_hdr option that enables gso/checksum > >> offload with raw backend. You can find the linux kernel patch to support > >> this feature here. > >> http://thread.gmane.org/gmane.linux.network/150308 > >> > >> Signed-off-by: Sridhar Samudrala<sri@xxxxxxxxxx> > > > > See the previous discussion about the raw backend from Or's original > > patch. There's no obvious reason why we should have this in addition > > to a tun/tap backend. > > > > The only use-case I know of is macvlan but macvtap addresses this > > functionality while not introduce the rather nasty security problems > > associated with a raw backend. > > Not to mention that from a user perspective, raw makes almost no sense > as it's an obscure socket protocol family. Not clear what you mean here. AF_PACKET socket is just a transport mechanism for the host kernel to put the packets from the guest directly to an attached interface and vice-versa. > A user wants to do useful things like bridged networking or direct VF > assignment. We should have -net backends that reflect things that make > sense to a user. Binding to a SR-IOV VF is one of the use-case that is supported by raw backend. Thanks Sridhar -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
