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virtio_pci: pass vector policy enum to vp_find_one_vq_msix()

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Instead of accessing vp_dev->per_vq_vectors, pass vector policy enum
as an argument of vp_find_one_vq_msix() in preparation for another irq
allocation policy.

Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Message-Id: <20240716113552.80599-5-jiri@resnulli.us>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jiri Pirko 2024-07-16 13:35:43 +02:00 committed by Michael S. Tsirkin
parent ef775b2627
commit b8b4e1a05d
1 changed files with 9 additions and 8 deletions
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17
drivers/virtio/virtio_pci_common.c
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@ -292,11 +292,11 @@ enum vp_vq_vector_policy {
VP_VQ_VECTOR_POLICY_SHARED,
};
static struct virtqueue *vp_find_one_vq_msix(struct virtio_device *vdev,
int queue_idx,
vq_callback_t *callback,
const char *name, bool ctx,
int *allocated_vectors)
static struct virtqueue *
vp_find_one_vq_msix(struct virtio_device *vdev, int queue_idx,
vq_callback_t *callback, const char *name, bool ctx,
int *allocated_vectors,
enum vp_vq_vector_policy vector_policy)
{
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
struct virtqueue *vq;
@ -305,7 +305,7 @@ static struct virtqueue *vp_find_one_vq_msix(struct virtio_device *vdev,
if (!callback)
msix_vec = VIRTIO_MSI_NO_VECTOR;
else if (vp_dev->per_vq_vectors)
else if (vector_policy == VP_VQ_VECTOR_POLICY_EACH)
msix_vec = (*allocated_vectors)++;
else
msix_vec = VP_MSIX_VQ_VECTOR;
@ -313,7 +313,8 @@ static struct virtqueue *vp_find_one_vq_msix(struct virtio_device *vdev,
if (IS_ERR(vq))
return vq;
if (!vp_dev->per_vq_vectors || msix_vec == VIRTIO_MSI_NO_VECTOR)
if (vector_policy == VP_VQ_VECTOR_POLICY_SHARED ||
msix_vec == VIRTIO_MSI_NO_VECTOR)
return vq;
/* allocate per-vq irq if available and necessary */
@ -374,7 +375,7 @@ static int vp_find_vqs_msix(struct virtio_device *vdev, unsigned int nvqs,
}
vqs[i] = vp_find_one_vq_msix(vdev, queue_idx++, vqi->callback,
vqi->name, vqi->ctx,
&allocated_vectors);
&allocated_vectors, vector_policy);
if (IS_ERR(vqs[i])) {
err = PTR_ERR(vqs[i]);
goto error_find;