Contributors: 11
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Bartosz Golaszewski |
202 |
60.66% |
4 |
25.00% |
| Rafał Miłecki |
76 |
22.82% |
1 |
6.25% |
| David S. Miller |
30 |
9.01% |
1 |
6.25% |
| Linus Torvalds (pre-git) |
5 |
1.50% |
2 |
12.50% |
| Tom Herbert |
5 |
1.50% |
1 |
6.25% |
| Christoph Hellwig |
4 |
1.20% |
1 |
6.25% |
| Stephen Hemminger |
4 |
1.20% |
2 |
12.50% |
| Peter P. Waskiewicz Jr |
3 |
0.90% |
1 |
6.25% |
| Jeff Garzik |
2 |
0.60% |
1 |
6.25% |
| Thomas Gleixner |
1 |
0.30% |
1 |
6.25% |
| gushengxian |
1 |
0.30% |
1 |
6.25% |
| Total |
333 |
|
16 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* This file contains all networking devres helpers.
*/
#include <linux/device.h>
#include <linux/etherdevice.h>
#include <linux/netdevice.h>
struct net_device_devres {
struct net_device *ndev;
};
static void devm_free_netdev(struct device *dev, void *this)
{
struct net_device_devres *res = this;
free_netdev(res->ndev);
}
struct net_device *devm_alloc_etherdev_mqs(struct device *dev, int sizeof_priv,
unsigned int txqs, unsigned int rxqs)
{
struct net_device_devres *dr;
dr = devres_alloc(devm_free_netdev, sizeof(*dr), GFP_KERNEL);
if (!dr)
return NULL;
dr->ndev = alloc_etherdev_mqs(sizeof_priv, txqs, rxqs);
if (!dr->ndev) {
devres_free(dr);
return NULL;
}
devres_add(dev, dr);
return dr->ndev;
}
EXPORT_SYMBOL(devm_alloc_etherdev_mqs);
static void devm_unregister_netdev(struct device *dev, void *this)
{
struct net_device_devres *res = this;
unregister_netdev(res->ndev);
}
static int netdev_devres_match(struct device *dev, void *this, void *match_data)
{
struct net_device_devres *res = this;
struct net_device *ndev = match_data;
return ndev == res->ndev;
}
/**
* devm_register_netdev - resource managed variant of register_netdev()
* @dev: managing device for this netdev - usually the parent device
* @ndev: device to register
*
* This is a devres variant of register_netdev() for which the unregister
* function will be called automatically when the managing device is
* detached. Note: the net_device used must also be resource managed by
* the same struct device.
*/
int devm_register_netdev(struct device *dev, struct net_device *ndev)
{
struct net_device_devres *dr;
int ret;
/* struct net_device must itself be managed. For now a managed netdev
* can only be allocated by devm_alloc_etherdev_mqs() so the check is
* straightforward.
*/
if (WARN_ON(!devres_find(dev, devm_free_netdev,
netdev_devres_match, ndev)))
return -EINVAL;
dr = devres_alloc(devm_unregister_netdev, sizeof(*dr), GFP_KERNEL);
if (!dr)
return -ENOMEM;
ret = register_netdev(ndev);
if (ret) {
devres_free(dr);
return ret;
}
dr->ndev = ndev;
devres_add(ndev->dev.parent, dr);
return 0;
}
EXPORT_SYMBOL(devm_register_netdev);