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vdpa_sim: set vringh notify callback

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Instead of calling the vq callback directly, we can leverage the
vringh_notify() function, adding vdpasim_vq_notify() and setting it
in the vringh notify callback.

Suggested-by: Jason Wang <jasowang@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20201215144256.155342-15-sgarzare@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Stefano Garzarella 2020-12-15 15:42:52 +01:00 committed by Michael S. Tsirkin
parent c124a95e30
commit b240491b7a
1 changed files with 19 additions and 4 deletions
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23
drivers/vdpa/vdpa_sim/vdpa_sim.c
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@ -131,6 +131,17 @@ static struct vdpasim *dev_to_sim(struct device *dev)
return vdpa_to_sim(vdpa);
}
static void vdpasim_vq_notify(struct vringh *vring)
{
struct vdpasim_virtqueue *vq =
container_of(vring, struct vdpasim_virtqueue, vring);
if (!vq->cb)
return;
vq->cb(vq->private);
}
static void vdpasim_queue_ready(struct vdpasim *vdpasim, unsigned int idx)
{
struct vdpasim_virtqueue *vq = &vdpasim->vqs[idx];
@ -142,6 +153,8 @@ static void vdpasim_queue_ready(struct vdpasim *vdpasim, unsigned int idx)
(uintptr_t)vq->driver_addr,
(struct vring_used *)
(uintptr_t)vq->device_addr);
vq->vring.notify = vdpasim_vq_notify;
}
static void vdpasim_vq_reset(struct vdpasim *vdpasim,
@ -155,6 +168,8 @@ static void vdpasim_vq_reset(struct vdpasim *vdpasim,
vq->private = NULL;
vringh_init_iotlb(&vq->vring, vdpasim->dev_attr.supported_features,
VDPASIM_QUEUE_MAX, false, NULL, NULL, NULL);
vq->vring.notify = NULL;
}
static void vdpasim_reset(struct vdpasim *vdpasim)
@ -231,10 +246,10 @@ static void vdpasim_net_work(struct work_struct *work)
smp_wmb();
local_bh_disable();
if (txq->cb)
txq->cb(txq->private);
if (rxq->cb)
rxq->cb(rxq->private);
if (vringh_need_notify_iotlb(&txq->vring) > 0)
vringh_notify(&txq->vring);
if (vringh_need_notify_iotlb(&rxq->vring) > 0)
vringh_notify(&rxq->vring);
local_bh_enable();
if (++pkts > 4) {