From: Jason Wang <jasowang@redhat.com>
To: Stefano Garzarella <sgarzare@redhat.com>,
virtualization@lists.linux-foundation.org
Cc: netdev@vger.kernel.org, Xie Yongji <xieyongji@bytedance.com>,
Laurent Vivier <lvivier@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
linux-kernel@vger.kernel.org, Max Gurtovoy <mgurtovoy@nvidia.com>,
Parav Pandit <parav@nvidia.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
kvm@vger.kernel.org
Subject: Re: [PATCH v4 14/14] vdpa_sim_blk: add support for vdpa management tool
Date: Thu, 18 Mar 2021 11:31:54 +0800 [thread overview]
Message-ID: <94bb9e5a-a1b9-2e0d-d5ec-c6a3eaebea88@redhat.com> (raw)
In-Reply-To: <20210315163450.254396-15-sgarzare@redhat.com>
在 2021/3/16 上午12:34, Stefano Garzarella 写道:
> Enable the user to create vDPA block simulator devices using the
> vdpa management tool:
>
> # Show vDPA supported devices
> $ vdpa mgmtdev show
> vdpasim_blk:
> supported_classes block
>
> # Create a vDPA block device named as 'blk0' from the management
> # device vdpasim:
> $ vdpa dev add mgmtdev vdpasim_blk name blk0
>
> # Show the info of the 'blk0' device just created
> $ vdpa dev show blk0 -jp
> {
> "dev": {
> "blk0": {
> "type": "block",
> "mgmtdev": "vdpasim_blk",
> "vendor_id": 0,
> "max_vqs": 1,
> "max_vq_size": 256
> }
> }
> }
>
> # Delete the vDPA device after its use
> $ vdpa dev del blk0
>
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
> ---
> drivers/vdpa/vdpa_sim/vdpa_sim_blk.c | 76 +++++++++++++++++++++++-----
> 1 file changed, 63 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
> index 643ae3bc62c0..5bfe1c281645 100644
> --- a/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
> +++ b/drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
> @@ -37,7 +37,6 @@
> #define VDPASIM_BLK_SEG_MAX 32
> #define VDPASIM_BLK_VQ_NUM 1
>
> -static struct vdpasim *vdpasim_blk_dev;
> static char vdpasim_blk_id[VIRTIO_BLK_ID_BYTES] = "vdpa_blk_sim";
>
> static bool vdpasim_blk_check_range(u64 start_sector, size_t range_size)
> @@ -241,11 +240,23 @@ static void vdpasim_blk_get_config(struct vdpasim *vdpasim, void *config)
> blk_config->blk_size = cpu_to_vdpasim32(vdpasim, SECTOR_SIZE);
> }
>
> -static int __init vdpasim_blk_init(void)
> +static void vdpasim_blk_mgmtdev_release(struct device *dev)
> +{
> +}
> +
> +static struct device vdpasim_blk_mgmtdev = {
> + .init_name = "vdpasim_blk",
> + .release = vdpasim_blk_mgmtdev_release,
> +};
> +
> +static int vdpasim_blk_dev_add(struct vdpa_mgmt_dev *mdev, const char *name)
> {
> struct vdpasim_dev_attr dev_attr = {};
> + struct vdpasim *simdev;
> int ret;
>
> + dev_attr.mgmt_dev = mdev;
> + dev_attr.name = name;
> dev_attr.id = VIRTIO_ID_BLOCK;
> dev_attr.supported_features = VDPASIM_BLK_FEATURES;
> dev_attr.nvqs = VDPASIM_BLK_VQ_NUM;
> @@ -254,29 +265,68 @@ static int __init vdpasim_blk_init(void)
> dev_attr.work_fn = vdpasim_blk_work;
> dev_attr.buffer_size = VDPASIM_BLK_CAPACITY << SECTOR_SHIFT;
>
> - vdpasim_blk_dev = vdpasim_create(&dev_attr);
> - if (IS_ERR(vdpasim_blk_dev)) {
> - ret = PTR_ERR(vdpasim_blk_dev);
> - goto out;
> - }
> + simdev = vdpasim_create(&dev_attr);
> + if (IS_ERR(simdev))
> + return PTR_ERR(simdev);
>
> - ret = vdpa_register_device(&vdpasim_blk_dev->vdpa, VDPASIM_BLK_VQ_NUM);
> + ret = _vdpa_register_device(&simdev->vdpa, VDPASIM_BLK_VQ_NUM);
> if (ret)
> goto put_dev;
>
> return 0;
>
> put_dev:
> - put_device(&vdpasim_blk_dev->vdpa.dev);
> -out:
> + put_device(&simdev->vdpa.dev);
> return ret;
> }
>
> -static void __exit vdpasim_blk_exit(void)
> +static void vdpasim_blk_dev_del(struct vdpa_mgmt_dev *mdev,
> + struct vdpa_device *dev)
> {
> - struct vdpa_device *vdpa = &vdpasim_blk_dev->vdpa;
> + struct vdpasim *simdev = container_of(dev, struct vdpasim, vdpa);
> +
> + _vdpa_unregister_device(&simdev->vdpa);
> +}
> +
> +static const struct vdpa_mgmtdev_ops vdpasim_blk_mgmtdev_ops = {
> + .dev_add = vdpasim_blk_dev_add,
> + .dev_del = vdpasim_blk_dev_del
> +};
>
> - vdpa_unregister_device(vdpa);
> +static struct virtio_device_id id_table[] = {
> + { VIRTIO_ID_BLOCK, VIRTIO_DEV_ANY_ID },
> + { 0 },
> +};
> +
> +static struct vdpa_mgmt_dev mgmt_dev = {
> + .device = &vdpasim_blk_mgmtdev,
> + .id_table = id_table,
> + .ops = &vdpasim_blk_mgmtdev_ops,
> +};
> +
> +static int __init vdpasim_blk_init(void)
> +{
> + int ret;
> +
> + ret = device_register(&vdpasim_blk_mgmtdev);
> + if (ret)
> + return ret;
> +
> + ret = vdpa_mgmtdev_register(&mgmt_dev);
> + if (ret)
> + goto parent_err;
> +
> + return 0;
> +
> +parent_err:
> + device_unregister(&vdpasim_blk_mgmtdev);
> + return ret;
> +}
> +
> +static void __exit vdpasim_blk_exit(void)
> +{
> + vdpa_mgmtdev_unregister(&mgmt_dev);
> + device_unregister(&vdpasim_blk_mgmtdev);
> }
>
> module_init(vdpasim_blk_init)
next prev parent reply other threads:[~2021-03-18 3:33 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-15 16:34 [PATCH v4 00/14] vdpa: add vdpa simulator for block device Stefano Garzarella
2021-03-15 16:34 ` [PATCH v4 01/14] vdpa_sim: use iova module to allocate IOVA addresses Stefano Garzarella
2021-03-15 16:34 ` [PATCH v4 02/14] vringh: add 'iotlb_lock' to synchronize iotlb accesses Stefano Garzarella
2021-03-15 16:34 ` [PATCH v4 03/14] vringh: reset kiov 'consumed' field in __vringh_iov() Stefano Garzarella
2021-03-15 16:34 ` [PATCH v4 04/14] vringh: explain more about cleaning riov and wiov Stefano Garzarella
2021-03-15 16:34 ` [PATCH v4 05/14] vringh: implement vringh_kiov_advance() Stefano Garzarella
2021-03-15 16:34 ` [PATCH v4 06/14] vringh: add vringh_kiov_length() helper Stefano Garzarella
2021-03-15 16:51 ` Laurent Vivier
2021-03-15 17:06 ` Stefano Garzarella
2021-03-15 16:34 ` [PATCH v4 07/14] vdpa_sim: cleanup kiovs in vdpasim_free() Stefano Garzarella
2021-03-15 16:34 ` [PATCH v4 08/14] vdpa: add get_config_size callback in vdpa_config_ops Stefano Garzarella
2021-03-18 3:21 ` Jason Wang
2021-03-15 16:34 ` [PATCH v4 09/14] vhost/vdpa: use get_config_size callback in vhost_vdpa_config_validate() Stefano Garzarella
2021-03-18 3:22 ` Jason Wang
2021-03-15 16:34 ` [PATCH v4 10/14] vhost/vdpa: Remove the restriction that only supports virtio-net devices Stefano Garzarella
2021-03-18 3:24 ` Jason Wang
2021-03-15 16:34 ` [PATCH v4 11/14] vdpa: add vdpa simulator for block device Stefano Garzarella
2021-03-15 16:34 ` [PATCH v4 12/14] vdpa_sim_blk: implement ramdisk behaviour Stefano Garzarella
2021-03-15 16:34 ` [PATCH v4 13/14] vdpa_sim_blk: handle VIRTIO_BLK_T_GET_ID Stefano Garzarella
2021-03-15 16:34 ` [PATCH v4 14/14] vdpa_sim_blk: add support for vdpa management tool Stefano Garzarella
2021-03-18 3:31 ` Jason Wang [this message]
2021-04-12 8:18 ` [PATCH v4 00/14] vdpa: add vdpa simulator for block device Stefano Garzarella
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