From 0b545b1e42fc61f64071c7dd6f3ce1650f328007 Mon Sep 17 00:00:00 2001 From: Hawkins Jiawei Date: Fri, 2 Jun 2023 19:52:16 +0800 Subject: virtio-net: expose virtio_net_supported_guest_offloads() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit To support restoring offloads state in vdpa, it is necessary to expose the function virtio_net_supported_guest_offloads(). According to VirtIO standard, "Upon feature negotiation corresponding offload gets enabled to preserve backward compatibility.". Therefore, QEMU uses this function to get the device supported offloads. This allows QEMU to know the device's defaults and skip the control message sending if these defaults align with the driver's configuration. Note that the device's defaults can mismatch the driver's configuration only at live migration. Signed-off-by: Hawkins Jiawei Message-Id: <43679506f3f039a7aa2bdd5b49785107b5dfd7d4.1685704856.git.yin31149@gmail.com> Tested-by: Lei Yang Reviewed-by: Eugenio Pérez Tested-by: Eugenio Pérez Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/virtio/virtio-net.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/hw/virtio') diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h index ef234ffe7e..5f5dcb4572 100644 --- a/include/hw/virtio/virtio-net.h +++ b/include/hw/virtio/virtio-net.h @@ -227,5 +227,6 @@ size_t virtio_net_handle_ctrl_iov(VirtIODevice *vdev, unsigned out_num); void virtio_net_set_netclient_name(VirtIONet *n, const char *name, const char *type); +uint64_t virtio_net_supported_guest_offloads(const VirtIONet *n); #endif -- cgit v1.2.3