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vhost-user-fs: fix features handling 

Make virtio-fs take into account server capabilities.

Just returning requested features assumes they all of then are implemented
by server and results in setting unsupported configuration if some of them
are absent.

Signed-off-by: Anton Kuchin <antonkuchin@yandex-team.ru>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  With changes suggested by Stefan
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Anton Kuchin 2021-04-08 22:55:34 +03:00 committed by Dr. David Alan Gilbert
parent dce628a97f
commit ace66791cd
1 changed files with 16 additions and 4 deletions
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20
hw/virtio/vhost-user-fs.c
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@ -24,6 +24,17 @@
#include "monitor/monitor.h"
#include "sysemu/sysemu.h"
static const int user_feature_bits[] = {
VIRTIO_F_VERSION_1,
VIRTIO_RING_F_INDIRECT_DESC,
VIRTIO_RING_F_EVENT_IDX,
VIRTIO_F_NOTIFY_ON_EMPTY,
VIRTIO_F_RING_PACKED,
VIRTIO_F_IOMMU_PLATFORM,
VHOST_INVALID_FEATURE_BIT
};
static void vuf_get_config(VirtIODevice *vdev, uint8_t *config)
{
VHostUserFS *fs = VHOST_USER_FS(vdev);
@ -129,11 +140,12 @@ static void vuf_set_status(VirtIODevice *vdev, uint8_t status)
}
static uint64_t vuf_get_features(VirtIODevice *vdev,
uint64_t requested_features,
Error **errp)
uint64_t features,
Error **errp)
{
/* No feature bits used yet */
return requested_features;
VHostUserFS *fs = VHOST_USER_FS(vdev);
return vhost_get_features(&fs->vhost_dev, user_feature_bits, features);
}
static void vuf_handle_output(VirtIODevice *vdev, VirtQueue *vq)