diff options
| author | Eugenio Pérez <eperezma@redhat.com> | 2022-12-21 12:50:14 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-01-08 01:54:21 -0500 |
| commit | 3f9a3eeb7ca6acd899e2205a9118928b4cd94e47 (patch) | |
| tree | 70cc579d7fc3d2c188703ee65e9f22d4da3c4284 /net/vhost-vdpa.c | |
| parent | 4f93aafc8f9d731c6588f5dc5594c6a1dd1fbe66 (diff) | |
vdpa: handle VIRTIO_NET_CTRL_ANNOUNCE in vhost_vdpa_net_handle_ctrl_avail
Since this capability is emulated by qemu shadowed CVQ cannot forward it
to the device. Process all that command within qemu.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20221221115015.1400889-4-eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Diffstat (limited to 'net/vhost-vdpa.c')
| -rw-r--r-- | net/vhost-vdpa.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index d36664f33a..41de76376f 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -616,9 +616,18 @@ static int vhost_vdpa_net_handle_ctrl_avail(VhostShadowVirtqueue *svq, out.iov_len = iov_to_buf(elem->out_sg, elem->out_num, 0, s->cvq_cmd_out_buffer, vhost_vdpa_net_cvq_cmd_len()); - dev_written = vhost_vdpa_net_cvq_add(s, out.iov_len, sizeof(status)); - if (unlikely(dev_written < 0)) { - goto out; + if (*(uint8_t *)s->cvq_cmd_out_buffer == VIRTIO_NET_CTRL_ANNOUNCE) { + /* + * Guest announce capability is emulated by qemu, so don't forward to + * the device. + */ + dev_written = sizeof(status); + *s->status = VIRTIO_NET_OK; + } else { + dev_written = vhost_vdpa_net_cvq_add(s, out.iov_len, sizeof(status)); + if (unlikely(dev_written < 0)) { + goto out; + } } if (unlikely(dev_written < sizeof(status))) { |