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![Parav Pandit](/assets/img/avatar_default.png)
Follow comment style mentioned in the Writing kernel-doc document [1]. Following warnings are fixed. $ scripts/kernel-doc -v -none drivers/vdpa/vdpa.c drivers/vdpa/vdpa.c:67: info: Scanning doc for __vdpa_alloc_device drivers/vdpa/vdpa.c:84: warning: No description found for return value of '__vdpa_alloc_device' drivers/vdpa/vdpa.c:153: info: Scanning doc for _vdpa_register_device drivers/vdpa/vdpa.c:163: warning: No description found for return value of '_vdpa_register_device' drivers/vdpa/vdpa.c:172: info: Scanning doc for vdpa_register_device drivers/vdpa/vdpa.c:180: warning: No description found for return value of 'vdpa_register_device' drivers/vdpa/vdpa.c:191: info: Scanning doc for _vdpa_unregister_device drivers/vdpa/vdpa.c:205: info: Scanning doc for vdpa_unregister_device drivers/vdpa/vdpa.c:217: info: Scanning doc for __vdpa_register_driver drivers/vdpa/vdpa.c:224: warning: No description found for return value of '__vdpa_register_driver' drivers/vdpa/vdpa.c:233: info: Scanning doc for vdpa_unregister_driver drivers/vdpa/vdpa.c:243: info: Scanning doc for vdpa_mgmtdev_register drivers/vdpa/vdpa.c:250: warning: No description found for return value of 'vdpa_mgmtdev_register' After the fix: scripts/kernel-doc -v -none drivers/vdpa/vdpa.c drivers/vdpa/vdpa.c:67: info: Scanning doc for __vdpa_alloc_device drivers/vdpa/vdpa.c:153: info: Scanning doc for _vdpa_register_device drivers/vdpa/vdpa.c:172: info: Scanning doc for vdpa_register_device drivers/vdpa/vdpa.c:191: info: Scanning doc for _vdpa_unregister_device drivers/vdpa/vdpa.c:205: info: Scanning doc for vdpa_unregister_device drivers/vdpa/vdpa.c:217: info: Scanning doc for __vdpa_register_driver drivers/vdpa/vdpa.c:233: info: Scanning doc for vdpa_unregister_driver drivers/vdpa/vdpa.c:243: info: Scanning doc for vdpa_mgmtdev_register [1] https://www.kernel.org/doc/html/latest/doc-guide/kernel-doc.html Signed-off-by: Parav Pandit <parav@nvidia.com> Reviewed-by: Eli Cohen <elic@nvidia.com> Link: https://lore.kernel.org/r/20210406170457.98481-3-parav@nvidia.com Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
681 lines
16 KiB
C
681 lines
16 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* vDPA bus.
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*
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* Copyright (c) 2020, Red Hat. All rights reserved.
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* Author: Jason Wang <jasowang@redhat.com>
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*
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*/
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#include <linux/module.h>
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#include <linux/idr.h>
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#include <linux/slab.h>
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#include <linux/vdpa.h>
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#include <uapi/linux/vdpa.h>
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#include <net/genetlink.h>
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#include <linux/mod_devicetable.h>
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static LIST_HEAD(mdev_head);
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/* A global mutex that protects vdpa management device and device level operations. */
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static DEFINE_MUTEX(vdpa_dev_mutex);
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static DEFINE_IDA(vdpa_index_ida);
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static struct genl_family vdpa_nl_family;
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static int vdpa_dev_probe(struct device *d)
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{
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struct vdpa_device *vdev = dev_to_vdpa(d);
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struct vdpa_driver *drv = drv_to_vdpa(vdev->dev.driver);
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int ret = 0;
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if (drv && drv->probe)
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ret = drv->probe(vdev);
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return ret;
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}
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static int vdpa_dev_remove(struct device *d)
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{
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struct vdpa_device *vdev = dev_to_vdpa(d);
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struct vdpa_driver *drv = drv_to_vdpa(vdev->dev.driver);
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if (drv && drv->remove)
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drv->remove(vdev);
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return 0;
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}
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static struct bus_type vdpa_bus = {
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.name = "vdpa",
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.probe = vdpa_dev_probe,
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.remove = vdpa_dev_remove,
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};
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static void vdpa_release_dev(struct device *d)
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{
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struct vdpa_device *vdev = dev_to_vdpa(d);
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const struct vdpa_config_ops *ops = vdev->config;
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if (ops->free)
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ops->free(vdev);
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ida_simple_remove(&vdpa_index_ida, vdev->index);
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kfree(vdev);
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}
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/**
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* __vdpa_alloc_device - allocate and initilaize a vDPA device
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* This allows driver to some prepartion after device is
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* initialized but before registered.
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* @parent: the parent device
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* @config: the bus operations that is supported by this device
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* @size: size of the parent structure that contains private data
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* @name: name of the vdpa device; optional.
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*
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* Driver should use vdpa_alloc_device() wrapper macro instead of
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* using this directly.
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*
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* Return: Returns an error when parent/config/dma_dev is not set or fail to get
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* ida.
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*/
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struct vdpa_device *__vdpa_alloc_device(struct device *parent,
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const struct vdpa_config_ops *config,
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size_t size, const char *name)
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{
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struct vdpa_device *vdev;
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int err = -EINVAL;
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if (!config)
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goto err;
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if (!!config->dma_map != !!config->dma_unmap)
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goto err;
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err = -ENOMEM;
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vdev = kzalloc(size, GFP_KERNEL);
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if (!vdev)
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goto err;
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err = ida_alloc(&vdpa_index_ida, GFP_KERNEL);
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if (err < 0)
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goto err_ida;
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vdev->dev.bus = &vdpa_bus;
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vdev->dev.parent = parent;
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vdev->dev.release = vdpa_release_dev;
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vdev->index = err;
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vdev->config = config;
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vdev->features_valid = false;
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if (name)
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err = dev_set_name(&vdev->dev, "%s", name);
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else
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err = dev_set_name(&vdev->dev, "vdpa%u", vdev->index);
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if (err)
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goto err_name;
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device_initialize(&vdev->dev);
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return vdev;
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err_name:
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ida_simple_remove(&vdpa_index_ida, vdev->index);
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err_ida:
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kfree(vdev);
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err:
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return ERR_PTR(err);
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}
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EXPORT_SYMBOL_GPL(__vdpa_alloc_device);
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static int vdpa_name_match(struct device *dev, const void *data)
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{
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struct vdpa_device *vdev = container_of(dev, struct vdpa_device, dev);
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return (strcmp(dev_name(&vdev->dev), data) == 0);
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}
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static int __vdpa_register_device(struct vdpa_device *vdev, int nvqs)
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{
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struct device *dev;
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vdev->nvqs = nvqs;
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lockdep_assert_held(&vdpa_dev_mutex);
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dev = bus_find_device(&vdpa_bus, NULL, dev_name(&vdev->dev), vdpa_name_match);
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if (dev) {
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put_device(dev);
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return -EEXIST;
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}
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return device_add(&vdev->dev);
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}
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/**
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* _vdpa_register_device - register a vDPA device with vdpa lock held
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* Caller must have a succeed call of vdpa_alloc_device() before.
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* Caller must invoke this routine in the management device dev_add()
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* callback after setting up valid mgmtdev for this vdpa device.
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* @vdev: the vdpa device to be registered to vDPA bus
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* @nvqs: number of virtqueues supported by this device
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*
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* Return: Returns an error when fail to add device to vDPA bus
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*/
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int _vdpa_register_device(struct vdpa_device *vdev, int nvqs)
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{
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if (!vdev->mdev)
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return -EINVAL;
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return __vdpa_register_device(vdev, nvqs);
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}
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EXPORT_SYMBOL_GPL(_vdpa_register_device);
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/**
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* vdpa_register_device - register a vDPA device
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* Callers must have a succeed call of vdpa_alloc_device() before.
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* @vdev: the vdpa device to be registered to vDPA bus
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* @nvqs: number of virtqueues supported by this device
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*
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* Return: Returns an error when fail to add to vDPA bus
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*/
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int vdpa_register_device(struct vdpa_device *vdev, int nvqs)
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{
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int err;
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mutex_lock(&vdpa_dev_mutex);
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err = __vdpa_register_device(vdev, nvqs);
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mutex_unlock(&vdpa_dev_mutex);
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return err;
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}
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EXPORT_SYMBOL_GPL(vdpa_register_device);
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/**
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* _vdpa_unregister_device - unregister a vDPA device
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* Caller must invoke this routine as part of management device dev_del()
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* callback.
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* @vdev: the vdpa device to be unregisted from vDPA bus
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*/
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void _vdpa_unregister_device(struct vdpa_device *vdev)
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{
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lockdep_assert_held(&vdpa_dev_mutex);
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WARN_ON(!vdev->mdev);
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device_unregister(&vdev->dev);
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}
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EXPORT_SYMBOL_GPL(_vdpa_unregister_device);
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/**
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* vdpa_unregister_device - unregister a vDPA device
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* @vdev: the vdpa device to be unregisted from vDPA bus
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*/
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void vdpa_unregister_device(struct vdpa_device *vdev)
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{
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mutex_lock(&vdpa_dev_mutex);
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device_unregister(&vdev->dev);
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mutex_unlock(&vdpa_dev_mutex);
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}
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EXPORT_SYMBOL_GPL(vdpa_unregister_device);
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/**
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* __vdpa_register_driver - register a vDPA device driver
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* @drv: the vdpa device driver to be registered
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* @owner: module owner of the driver
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*
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* Return: Returns an err when fail to do the registration
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*/
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int __vdpa_register_driver(struct vdpa_driver *drv, struct module *owner)
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{
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drv->driver.bus = &vdpa_bus;
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drv->driver.owner = owner;
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return driver_register(&drv->driver);
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}
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EXPORT_SYMBOL_GPL(__vdpa_register_driver);
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/**
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* vdpa_unregister_driver - unregister a vDPA device driver
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* @drv: the vdpa device driver to be unregistered
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*/
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void vdpa_unregister_driver(struct vdpa_driver *drv)
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{
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driver_unregister(&drv->driver);
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}
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EXPORT_SYMBOL_GPL(vdpa_unregister_driver);
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/**
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* vdpa_mgmtdev_register - register a vdpa management device
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*
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* @mdev: Pointer to vdpa management device
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* vdpa_mgmtdev_register() register a vdpa management device which supports
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* vdpa device management.
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* Return: Returns 0 on success or failure when required callback ops are not
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* initialized.
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*/
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int vdpa_mgmtdev_register(struct vdpa_mgmt_dev *mdev)
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{
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if (!mdev->device || !mdev->ops || !mdev->ops->dev_add || !mdev->ops->dev_del)
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return -EINVAL;
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INIT_LIST_HEAD(&mdev->list);
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mutex_lock(&vdpa_dev_mutex);
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list_add_tail(&mdev->list, &mdev_head);
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mutex_unlock(&vdpa_dev_mutex);
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return 0;
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}
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EXPORT_SYMBOL_GPL(vdpa_mgmtdev_register);
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static int vdpa_match_remove(struct device *dev, void *data)
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{
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struct vdpa_device *vdev = container_of(dev, struct vdpa_device, dev);
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struct vdpa_mgmt_dev *mdev = vdev->mdev;
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if (mdev == data)
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mdev->ops->dev_del(mdev, vdev);
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return 0;
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}
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void vdpa_mgmtdev_unregister(struct vdpa_mgmt_dev *mdev)
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{
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mutex_lock(&vdpa_dev_mutex);
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list_del(&mdev->list);
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/* Filter out all the entries belong to this management device and delete it. */
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bus_for_each_dev(&vdpa_bus, NULL, mdev, vdpa_match_remove);
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mutex_unlock(&vdpa_dev_mutex);
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}
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EXPORT_SYMBOL_GPL(vdpa_mgmtdev_unregister);
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static bool mgmtdev_handle_match(const struct vdpa_mgmt_dev *mdev,
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const char *busname, const char *devname)
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{
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/* Bus name is optional for simulated management device, so ignore the
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* device with bus if bus attribute is provided.
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*/
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if ((busname && !mdev->device->bus) || (!busname && mdev->device->bus))
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return false;
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if (!busname && strcmp(dev_name(mdev->device), devname) == 0)
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return true;
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if (busname && (strcmp(mdev->device->bus->name, busname) == 0) &&
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(strcmp(dev_name(mdev->device), devname) == 0))
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return true;
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return false;
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}
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static struct vdpa_mgmt_dev *vdpa_mgmtdev_get_from_attr(struct nlattr **attrs)
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{
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struct vdpa_mgmt_dev *mdev;
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const char *busname = NULL;
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const char *devname;
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if (!attrs[VDPA_ATTR_MGMTDEV_DEV_NAME])
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return ERR_PTR(-EINVAL);
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devname = nla_data(attrs[VDPA_ATTR_MGMTDEV_DEV_NAME]);
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if (attrs[VDPA_ATTR_MGMTDEV_BUS_NAME])
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busname = nla_data(attrs[VDPA_ATTR_MGMTDEV_BUS_NAME]);
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list_for_each_entry(mdev, &mdev_head, list) {
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if (mgmtdev_handle_match(mdev, busname, devname))
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return mdev;
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}
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return ERR_PTR(-ENODEV);
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}
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static int vdpa_nl_mgmtdev_handle_fill(struct sk_buff *msg, const struct vdpa_mgmt_dev *mdev)
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{
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if (mdev->device->bus &&
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nla_put_string(msg, VDPA_ATTR_MGMTDEV_BUS_NAME, mdev->device->bus->name))
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return -EMSGSIZE;
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if (nla_put_string(msg, VDPA_ATTR_MGMTDEV_DEV_NAME, dev_name(mdev->device)))
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return -EMSGSIZE;
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return 0;
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}
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static int vdpa_mgmtdev_fill(const struct vdpa_mgmt_dev *mdev, struct sk_buff *msg,
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u32 portid, u32 seq, int flags)
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{
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u64 supported_classes = 0;
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void *hdr;
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int i = 0;
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int err;
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hdr = genlmsg_put(msg, portid, seq, &vdpa_nl_family, flags, VDPA_CMD_MGMTDEV_NEW);
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if (!hdr)
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return -EMSGSIZE;
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err = vdpa_nl_mgmtdev_handle_fill(msg, mdev);
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if (err)
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goto msg_err;
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while (mdev->id_table[i].device) {
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supported_classes |= BIT(mdev->id_table[i].device);
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i++;
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}
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if (nla_put_u64_64bit(msg, VDPA_ATTR_MGMTDEV_SUPPORTED_CLASSES,
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supported_classes, VDPA_ATTR_UNSPEC)) {
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err = -EMSGSIZE;
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goto msg_err;
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}
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genlmsg_end(msg, hdr);
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return 0;
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msg_err:
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genlmsg_cancel(msg, hdr);
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return err;
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}
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static int vdpa_nl_cmd_mgmtdev_get_doit(struct sk_buff *skb, struct genl_info *info)
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{
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struct vdpa_mgmt_dev *mdev;
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struct sk_buff *msg;
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int err;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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mutex_lock(&vdpa_dev_mutex);
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mdev = vdpa_mgmtdev_get_from_attr(info->attrs);
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if (IS_ERR(mdev)) {
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mutex_unlock(&vdpa_dev_mutex);
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NL_SET_ERR_MSG_MOD(info->extack, "Fail to find the specified mgmt device");
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err = PTR_ERR(mdev);
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goto out;
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}
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err = vdpa_mgmtdev_fill(mdev, msg, info->snd_portid, info->snd_seq, 0);
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mutex_unlock(&vdpa_dev_mutex);
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if (err)
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goto out;
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err = genlmsg_reply(msg, info);
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return err;
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out:
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nlmsg_free(msg);
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return err;
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}
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static int
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vdpa_nl_cmd_mgmtdev_get_dumpit(struct sk_buff *msg, struct netlink_callback *cb)
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{
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struct vdpa_mgmt_dev *mdev;
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int start = cb->args[0];
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int idx = 0;
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int err;
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mutex_lock(&vdpa_dev_mutex);
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list_for_each_entry(mdev, &mdev_head, list) {
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if (idx < start) {
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idx++;
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continue;
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}
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err = vdpa_mgmtdev_fill(mdev, msg, NETLINK_CB(cb->skb).portid,
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cb->nlh->nlmsg_seq, NLM_F_MULTI);
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if (err)
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goto out;
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idx++;
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}
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out:
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mutex_unlock(&vdpa_dev_mutex);
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cb->args[0] = idx;
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return msg->len;
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}
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static int vdpa_nl_cmd_dev_add_set_doit(struct sk_buff *skb, struct genl_info *info)
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{
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struct vdpa_mgmt_dev *mdev;
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const char *name;
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int err = 0;
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if (!info->attrs[VDPA_ATTR_DEV_NAME])
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return -EINVAL;
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name = nla_data(info->attrs[VDPA_ATTR_DEV_NAME]);
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mutex_lock(&vdpa_dev_mutex);
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mdev = vdpa_mgmtdev_get_from_attr(info->attrs);
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if (IS_ERR(mdev)) {
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NL_SET_ERR_MSG_MOD(info->extack, "Fail to find the specified management device");
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err = PTR_ERR(mdev);
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goto err;
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}
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err = mdev->ops->dev_add(mdev, name);
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err:
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mutex_unlock(&vdpa_dev_mutex);
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return err;
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}
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static int vdpa_nl_cmd_dev_del_set_doit(struct sk_buff *skb, struct genl_info *info)
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{
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struct vdpa_mgmt_dev *mdev;
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struct vdpa_device *vdev;
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struct device *dev;
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const char *name;
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int err = 0;
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|
|
if (!info->attrs[VDPA_ATTR_DEV_NAME])
|
|
return -EINVAL;
|
|
name = nla_data(info->attrs[VDPA_ATTR_DEV_NAME]);
|
|
|
|
mutex_lock(&vdpa_dev_mutex);
|
|
dev = bus_find_device(&vdpa_bus, NULL, name, vdpa_name_match);
|
|
if (!dev) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "device not found");
|
|
err = -ENODEV;
|
|
goto dev_err;
|
|
}
|
|
vdev = container_of(dev, struct vdpa_device, dev);
|
|
if (!vdev->mdev) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "Only user created device can be deleted by user");
|
|
err = -EINVAL;
|
|
goto mdev_err;
|
|
}
|
|
mdev = vdev->mdev;
|
|
mdev->ops->dev_del(mdev, vdev);
|
|
mdev_err:
|
|
put_device(dev);
|
|
dev_err:
|
|
mutex_unlock(&vdpa_dev_mutex);
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
vdpa_dev_fill(struct vdpa_device *vdev, struct sk_buff *msg, u32 portid, u32 seq,
|
|
int flags, struct netlink_ext_ack *extack)
|
|
{
|
|
u16 max_vq_size;
|
|
u32 device_id;
|
|
u32 vendor_id;
|
|
void *hdr;
|
|
int err;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &vdpa_nl_family, flags, VDPA_CMD_DEV_NEW);
|
|
if (!hdr)
|
|
return -EMSGSIZE;
|
|
|
|
err = vdpa_nl_mgmtdev_handle_fill(msg, vdev->mdev);
|
|
if (err)
|
|
goto msg_err;
|
|
|
|
device_id = vdev->config->get_device_id(vdev);
|
|
vendor_id = vdev->config->get_vendor_id(vdev);
|
|
max_vq_size = vdev->config->get_vq_num_max(vdev);
|
|
|
|
err = -EMSGSIZE;
|
|
if (nla_put_string(msg, VDPA_ATTR_DEV_NAME, dev_name(&vdev->dev)))
|
|
goto msg_err;
|
|
if (nla_put_u32(msg, VDPA_ATTR_DEV_ID, device_id))
|
|
goto msg_err;
|
|
if (nla_put_u32(msg, VDPA_ATTR_DEV_VENDOR_ID, vendor_id))
|
|
goto msg_err;
|
|
if (nla_put_u32(msg, VDPA_ATTR_DEV_MAX_VQS, vdev->nvqs))
|
|
goto msg_err;
|
|
if (nla_put_u16(msg, VDPA_ATTR_DEV_MAX_VQ_SIZE, max_vq_size))
|
|
goto msg_err;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
msg_err:
|
|
genlmsg_cancel(msg, hdr);
|
|
return err;
|
|
}
|
|
|
|
static int vdpa_nl_cmd_dev_get_doit(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct vdpa_device *vdev;
|
|
struct sk_buff *msg;
|
|
const char *devname;
|
|
struct device *dev;
|
|
int err;
|
|
|
|
if (!info->attrs[VDPA_ATTR_DEV_NAME])
|
|
return -EINVAL;
|
|
devname = nla_data(info->attrs[VDPA_ATTR_DEV_NAME]);
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
mutex_lock(&vdpa_dev_mutex);
|
|
dev = bus_find_device(&vdpa_bus, NULL, devname, vdpa_name_match);
|
|
if (!dev) {
|
|
NL_SET_ERR_MSG_MOD(info->extack, "device not found");
|
|
err = -ENODEV;
|
|
goto err;
|
|
}
|
|
vdev = container_of(dev, struct vdpa_device, dev);
|
|
if (!vdev->mdev) {
|
|
err = -EINVAL;
|
|
goto mdev_err;
|
|
}
|
|
err = vdpa_dev_fill(vdev, msg, info->snd_portid, info->snd_seq, 0, info->extack);
|
|
if (!err)
|
|
err = genlmsg_reply(msg, info);
|
|
mdev_err:
|
|
put_device(dev);
|
|
err:
|
|
mutex_unlock(&vdpa_dev_mutex);
|
|
if (err)
|
|
nlmsg_free(msg);
|
|
return err;
|
|
}
|
|
|
|
struct vdpa_dev_dump_info {
|
|
struct sk_buff *msg;
|
|
struct netlink_callback *cb;
|
|
int start_idx;
|
|
int idx;
|
|
};
|
|
|
|
static int vdpa_dev_dump(struct device *dev, void *data)
|
|
{
|
|
struct vdpa_device *vdev = container_of(dev, struct vdpa_device, dev);
|
|
struct vdpa_dev_dump_info *info = data;
|
|
int err;
|
|
|
|
if (!vdev->mdev)
|
|
return 0;
|
|
if (info->idx < info->start_idx) {
|
|
info->idx++;
|
|
return 0;
|
|
}
|
|
err = vdpa_dev_fill(vdev, info->msg, NETLINK_CB(info->cb->skb).portid,
|
|
info->cb->nlh->nlmsg_seq, NLM_F_MULTI, info->cb->extack);
|
|
if (err)
|
|
return err;
|
|
|
|
info->idx++;
|
|
return 0;
|
|
}
|
|
|
|
static int vdpa_nl_cmd_dev_get_dumpit(struct sk_buff *msg, struct netlink_callback *cb)
|
|
{
|
|
struct vdpa_dev_dump_info info;
|
|
|
|
info.msg = msg;
|
|
info.cb = cb;
|
|
info.start_idx = cb->args[0];
|
|
info.idx = 0;
|
|
|
|
mutex_lock(&vdpa_dev_mutex);
|
|
bus_for_each_dev(&vdpa_bus, NULL, &info, vdpa_dev_dump);
|
|
mutex_unlock(&vdpa_dev_mutex);
|
|
cb->args[0] = info.idx;
|
|
return msg->len;
|
|
}
|
|
|
|
static const struct nla_policy vdpa_nl_policy[VDPA_ATTR_MAX + 1] = {
|
|
[VDPA_ATTR_MGMTDEV_BUS_NAME] = { .type = NLA_NUL_STRING },
|
|
[VDPA_ATTR_MGMTDEV_DEV_NAME] = { .type = NLA_STRING },
|
|
[VDPA_ATTR_DEV_NAME] = { .type = NLA_STRING },
|
|
};
|
|
|
|
static const struct genl_ops vdpa_nl_ops[] = {
|
|
{
|
|
.cmd = VDPA_CMD_MGMTDEV_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = vdpa_nl_cmd_mgmtdev_get_doit,
|
|
.dumpit = vdpa_nl_cmd_mgmtdev_get_dumpit,
|
|
},
|
|
{
|
|
.cmd = VDPA_CMD_DEV_NEW,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = vdpa_nl_cmd_dev_add_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = VDPA_CMD_DEV_DEL,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = vdpa_nl_cmd_dev_del_set_doit,
|
|
.flags = GENL_ADMIN_PERM,
|
|
},
|
|
{
|
|
.cmd = VDPA_CMD_DEV_GET,
|
|
.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,
|
|
.doit = vdpa_nl_cmd_dev_get_doit,
|
|
.dumpit = vdpa_nl_cmd_dev_get_dumpit,
|
|
},
|
|
};
|
|
|
|
static struct genl_family vdpa_nl_family __ro_after_init = {
|
|
.name = VDPA_GENL_NAME,
|
|
.version = VDPA_GENL_VERSION,
|
|
.maxattr = VDPA_ATTR_MAX,
|
|
.policy = vdpa_nl_policy,
|
|
.netnsok = false,
|
|
.module = THIS_MODULE,
|
|
.ops = vdpa_nl_ops,
|
|
.n_ops = ARRAY_SIZE(vdpa_nl_ops),
|
|
};
|
|
|
|
static int vdpa_init(void)
|
|
{
|
|
int err;
|
|
|
|
err = bus_register(&vdpa_bus);
|
|
if (err)
|
|
return err;
|
|
err = genl_register_family(&vdpa_nl_family);
|
|
if (err)
|
|
goto err;
|
|
return 0;
|
|
|
|
err:
|
|
bus_unregister(&vdpa_bus);
|
|
return err;
|
|
}
|
|
|
|
static void __exit vdpa_exit(void)
|
|
{
|
|
genl_unregister_family(&vdpa_nl_family);
|
|
bus_unregister(&vdpa_bus);
|
|
ida_destroy(&vdpa_index_ida);
|
|
}
|
|
core_initcall(vdpa_init);
|
|
module_exit(vdpa_exit);
|
|
|
|
MODULE_AUTHOR("Jason Wang <jasowang@redhat.com>");
|
|
MODULE_LICENSE("GPL v2");
|