motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-02 07:13:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

virtio-net: expose virtio_net_supported_guest_offloads()

Browse source 
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 <yin31149@gmail.com>
Message-Id: <43679506f3f039a7aa2bdd5b49785107b5dfd7d4.1685704856.git.yin31149@gmail.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Tested-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Hawkins Jiawei 2023-06-02 19:52:16 +08:00 • committed by Michael S. Tsirkin
parent 705e89cfaa
commit 0b545b1e42
2 changed files with 2 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

1
include/hw/virtio/virtio-net.h
View file

@ -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