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vhost: add vhost_get_features and vhost_ack_features

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Generalize the features get/ack to be used for both vhost-net and vhost-scsi.
In vhost-net add vhost_net_get_feature_bits to select the feature bit set
depending on the NetClient kind.

Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Nikolay Nikolaev 2014-05-27 15:04:42 +03:00 • committed by Michael S. Tsirkin
parent cdaa86a54b
commit 2e6d46d77e
4 changed files with 71 additions and 42 deletions
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5
include/hw/virtio/vhost.h
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@ -25,6 +25,7 @@ typedef unsigned long vhost_log_chunk_t;
#define VHOST_LOG_PAGE 0x1000
#define VHOST_LOG_BITS (8 * sizeof(vhost_log_chunk_t))
#define VHOST_LOG_CHUNK (VHOST_LOG_PAGE * VHOST_LOG_BITS)
#define VHOST_INVALID_FEATURE_BIT (0xff)
struct vhost_memory;
struct vhost_dev {
@ -68,4 +69,8 @@ bool vhost_virtqueue_pending(struct vhost_dev *hdev, int n);
*/
void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, int n,
bool mask);
unsigned vhost_get_features(struct vhost_dev *hdev, const int *feature_bits,
unsigned features);
void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits,
unsigned features);
#endif