audk/OvmfPkg/VirtioNetDxe
Laszlo Ersek c6e2d064ab OvmfPkg: VirtioNetDxe: adapt virtio-net packet header size to virtio-1.0
In virtio-0.9.5, the size of the virtio-net packet header depends on
whether the VIRTIO_NET_F_MRG_RXBUF feature is negotiated -- the
"num_buffers" field is only appended to the header if the feature is
negotiated.

Since we never negotiate this feature, VirtioNetDxe never allocates room
for the "num_buffers" field.

With virtio-1.0, the "num_buffers" field is always there (although it
doesn't carry useful information without VIRTIO_NET_F_MRG_RXBUF). Adapt
the buffers that depend on the virtio-net header size (otherwise we have
skewed / truncated packets).

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
2016-04-06 19:21:50 +02:00
..
ComponentName.c
DriverBinding.c
EntryPoint.c
Events.c
SnpGetStatus.c
SnpInitialize.c
SnpMcastIpToMac.c
SnpReceive.c
SnpReceiveFilters.c
SnpSharedHelpers.c
SnpShutdown.c
SnpStart.c
SnpStop.c
SnpTransmit.c
SnpUnsupported.c
TechNotes.txt
VirtioNet.h
VirtioNet.inf