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Commit ab27c07f authored by Greg Kurz's avatar Greg Kurz Committed by Michael S. Tsirkin
Browse files

vhost: introduce vhost_is_little_endian() helper 



Signed-off-by: default avatarGreg Kurz <gkurz@linux.vnet.ibm.com>

Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Acked-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
parent 5da7b160

drivers/vhost/vhost.h

+11 −6
Original line number Diff line number Diff line
@@ -173,34 +173,39 @@ static inline bool vhost_has_feature(struct vhost_virtqueue *vq, int bit) 
	return vq->acked_features & (1ULL << bit);

}



static inline bool vhost_is_little_endian(struct vhost_virtqueue *vq)

{

	return vhost_has_feature(vq, VIRTIO_F_VERSION_1);

}



/* Memory accessors */

static inline u16 vhost16_to_cpu(struct vhost_virtqueue *vq, __virtio16 val)

{

	return __virtio16_to_cpu(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val);

	return __virtio16_to_cpu(vhost_is_little_endian(vq), val);

}



static inline __virtio16 cpu_to_vhost16(struct vhost_virtqueue *vq, u16 val)

{

	return __cpu_to_virtio16(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val);

	return __cpu_to_virtio16(vhost_is_little_endian(vq), val);

}



static inline u32 vhost32_to_cpu(struct vhost_virtqueue *vq, __virtio32 val)

{

	return __virtio32_to_cpu(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val);

	return __virtio32_to_cpu(vhost_is_little_endian(vq), val);

}



static inline __virtio32 cpu_to_vhost32(struct vhost_virtqueue *vq, u32 val)

{

	return __cpu_to_virtio32(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val);

	return __cpu_to_virtio32(vhost_is_little_endian(vq), val);

}



static inline u64 vhost64_to_cpu(struct vhost_virtqueue *vq, __virtio64 val)

{

	return __virtio64_to_cpu(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val);

	return __virtio64_to_cpu(vhost_is_little_endian(vq), val);

}



static inline __virtio64 cpu_to_vhost64(struct vhost_virtqueue *vq, u64 val)

{

	return __cpu_to_virtio64(vhost_has_feature(vq, VIRTIO_F_VERSION_1), val);

	return __cpu_to_virtio64(vhost_is_little_endian(vq), val);

}

#endif