@@ -678,6 +678,40 @@ static int vhost_vdpa_net_load_mq(VhostVDPAState *s,
return *s->status != VIRTIO_NET_OK;
}
+static int vhost_vdpa_net_load_offloads(VhostVDPAState *s,
+ const VirtIONet *n)
+{
+ uint64_t offloads;
+ ssize_t dev_written;
+
+ if (!virtio_vdev_has_feature(&n->parent_obj,
+ VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) {
+ return 0;
+ }
+
+ offloads = cpu_to_le64(n->curr_guest_offloads);
+
+ if (offloads == virtio_net_supported_guest_offloads(n)) {
+ /*
+ * According to VirtIO standard, "Upon feature negotiation
+ * corresponding offload gets enabled to preserve
+ * backward compatibility."
+ * So we do not need to send this CVQ command if the guest
+ * also enables all supported offloads.
+ */
+ return 0;
+ }
+
+ dev_written = vhost_vdpa_net_load_cmd(s, VIRTIO_NET_CTRL_GUEST_OFFLOADS,
+ VIRTIO_NET_CTRL_GUEST_OFFLOADS_SET,
+ &offloads, sizeof(offloads));
+ if (unlikely(dev_written < 0)) {
+ return dev_written;
+ }
+
+ return *s->status != VIRTIO_NET_OK;
+}
+
static int vhost_vdpa_net_load(NetClientState *nc)
{
VhostVDPAState *s = DO_UPCAST(VhostVDPAState, nc, nc);
@@ -700,6 +734,10 @@ static int vhost_vdpa_net_load(NetClientState *nc)
if (unlikely(r)) {
return r;
}
+ r = vhost_vdpa_net_load_offloads(s, n);
+ if (unlikely(r)) {
+ return r;
+ }
return 0;
}
This patch introduces vhost_vdpa_net_load_offloads() to restore offloads state at device's startup. Signed-off-by: Hawkins Jiawei <yin31149@gmail.com> --- net/vhost-vdpa.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+)