diff options
| author | Max Gurtovoy <mgurtovoy@nvidia.com> | 2020-12-15 15:42:41 +0100 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2020-12-18 16:14:28 -0500 |
| commit | 423248d60d2b655321fc49eca1545f95a1bc9d6c (patch) | |
| tree | 517ae04bc770298e279142b20ff5e9d98012395c /drivers/vdpa | |
| parent | cc3d42386d14176e392d61da1de05c1d87c18b93 (diff) | |
| download | linux-423248d60d2b655321fc49eca1545f95a1bc9d6c.tar.bz2 | |
vdpa_sim: remove hard-coded virtq count
Add a new attribute that will define the number of virt queues to be
created for the vdpasim device.
Signed-off-by: Max Gurtovoy <mgurtovoy@nvidia.com>
[sgarzare: replace kmalloc_array() with kcalloc()]
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20201215144256.155342-4-sgarzare@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/vdpa_sim/vdpa_sim.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index 63b85541fb5e..07ccc8609784 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -63,7 +63,7 @@ static u64 vdpasim_features = (1ULL << VIRTIO_F_ANY_LAYOUT) | /* State of each vdpasim device */ struct vdpasim { struct vdpa_device vdpa; - struct vdpasim_virtqueue vqs[VDPASIM_VQ_NUM]; + struct vdpasim_virtqueue *vqs; struct work_struct work; /* spinlock to synchronize virtqueue state */ spinlock_t lock; @@ -73,6 +73,7 @@ struct vdpasim { u32 status; u32 generation; u64 features; + int nvqs; /* spinlock to synchronize iommu table */ spinlock_t iommu_lock; }; @@ -137,7 +138,7 @@ static void vdpasim_reset(struct vdpasim *vdpasim) { int i; - for (i = 0; i < VDPASIM_VQ_NUM; i++) + for (i = 0; i < vdpasim->nvqs; i++) vdpasim_vq_reset(&vdpasim->vqs[i]); spin_lock(&vdpasim->iommu_lock); @@ -343,7 +344,7 @@ static struct vdpasim *vdpasim_create(void) const struct vdpa_config_ops *ops; struct vdpasim *vdpasim; struct device *dev; - int ret = -ENOMEM; + int i, ret = -ENOMEM; if (batch_mapping) ops = &vdpasim_net_batch_config_ops; @@ -354,6 +355,7 @@ static struct vdpasim *vdpasim_create(void) if (!vdpasim) goto err_alloc; + vdpasim->nvqs = VDPASIM_VQ_NUM; INIT_WORK(&vdpasim->work, vdpasim_work); spin_lock_init(&vdpasim->lock); spin_lock_init(&vdpasim->iommu_lock); @@ -364,6 +366,11 @@ static struct vdpasim *vdpasim_create(void) goto err_iommu; set_dma_ops(dev, &vdpasim_dma_ops); + vdpasim->vqs = kcalloc(vdpasim->nvqs, sizeof(struct vdpasim_virtqueue), + GFP_KERNEL); + if (!vdpasim->vqs) + goto err_iommu; + vdpasim->iommu = vhost_iotlb_alloc(2048, 0); if (!vdpasim->iommu) goto err_iommu; @@ -382,8 +389,8 @@ static struct vdpasim *vdpasim_create(void) eth_random_addr(vdpasim->config.mac); } - vringh_set_iotlb(&vdpasim->vqs[0].vring, vdpasim->iommu); - vringh_set_iotlb(&vdpasim->vqs[1].vring, vdpasim->iommu); + for (i = 0; i < vdpasim->nvqs; i++) + vringh_set_iotlb(&vdpasim->vqs[i].vring, vdpasim->iommu); vdpasim->vdpa.dma_dev = dev; ret = vdpa_register_device(&vdpasim->vdpa); @@ -652,6 +659,7 @@ static void vdpasim_free(struct vdpa_device *vdpa) kfree(vdpasim->buffer); if (vdpasim->iommu) vhost_iotlb_free(vdpasim->iommu); + kfree(vdpasim->vqs); } static const struct vdpa_config_ops vdpasim_net_config_ops = { |