Re: [Qemu-devel] [PATCH v3] e1000: NetClientInfo.receive_iov implemented

[Stefan Hajnoczi <stefanha@redhat.com>]

On Thu, Sep 12, 2013 at 10:47:37AM +0200, Vincenzo Maffione wrote:
> This patch implements the NetClientInfo.receive_iov method for the
> e1000 device emulation. In this way a network backend that uses
> qemu_sendv_packet() can deliver the fragmented packet without
> requiring an additional copy in the frontend/backend network code
> (nc_sendv_compat() function).
> 
> The existing method NetClientInfo.receive has been reimplemented
> using the new method.
> 
> Signed-off-by: Vincenzo Maffione <v.maffione@gmail.com>
> ---
>  hw/net/e1000.c | 70 ++++++++++++++++++++++++++++++++++++++++++++++++----------
>  1 file changed, 58 insertions(+), 12 deletions(-)
> 
> I propose this patch also because our research group (University of Pisa,
> Department of Computer Engineering) is working on the e1000 device
> (optimizations and paravirtual extensions) and we have patches to
> support the VALE switch as a network backend (see
> http://info.iet.unipi.it/~luigi/vale/).
> The VALE backend uses qemu_sendv_packet() to send fragmented packets: For
> this reason we think it could be interesting to better support these packets
> with e1000.

Thanks, applied to my net-next tree:
https://github.com/stefanha/qemu/commits/net-next

Stefan