/** * dev_change_name() - change name of a device * @dev: device * @newname: name (or format string) must be at least IFNAMSIZ * * Change name of a device, can pass format strings "eth%d". * for wildcarding. * * Return: 0 on success, -errno on failure.
*/ int dev_change_name(struct net_device *dev, constchar *newname)
{ int ret;
netdev_lock_ops(dev);
ret = netif_change_name(dev, newname);
netdev_unlock_ops(dev);
return ret;
}
/** * dev_set_alias() - change ifalias of a device * @dev: device * @alias: name up to IFALIASZ * @len: limit of bytes to copy from info * * Set ifalias for a device. * * Return: 0 on success, -errno on failure.
*/ int dev_set_alias(struct net_device *dev, constchar *alias, size_t len)
{ int ret;
netdev_lock_ops(dev);
ret = netif_set_alias(dev, alias, len);
netdev_unlock_ops(dev);
return ret;
}
EXPORT_SYMBOL(dev_set_alias);
/** * dev_change_flags() - change device settings * @dev: device * @flags: device state flags * @extack: netlink extended ack * * Change settings on device based state flags. The flags are * in the userspace exported format. * * Return: 0 on success, -errno on failure.
*/ int dev_change_flags(struct net_device *dev, unsignedint flags, struct netlink_ext_ack *extack)
{ int ret;
netdev_lock_ops(dev);
ret = netif_change_flags(dev, flags, extack);
netdev_unlock_ops(dev);
return ret;
}
EXPORT_SYMBOL(dev_change_flags);
/** * dev_set_group() - change group this device belongs to * @dev: device * @new_group: group this device should belong to
*/ void dev_set_group(struct net_device *dev, int new_group)
{
netdev_lock_ops(dev);
netif_set_group(dev, new_group);
netdev_unlock_ops(dev);
}
int dev_set_mac_address_user(struct net_device *dev, struct sockaddr_storage *ss, struct netlink_ext_ack *extack)
{ int ret;
down_write(&dev_addr_sem);
netdev_lock_ops(dev);
ret = netif_set_mac_address(dev, ss, extack);
netdev_unlock_ops(dev);
up_write(&dev_addr_sem);
/** * dev_change_net_namespace() - move device to different nethost namespace * @dev: device * @net: network namespace * @pat: If not NULL name pattern to try if the current device name * is already taken in the destination network namespace. * * This function shuts down a device interface and moves it * to a new network namespace. On success 0 is returned, on * a failure a netagive errno code is returned. * * Callers must hold the rtnl semaphore. * * Return: 0 on success, -errno on failure.
*/ int dev_change_net_namespace(struct net_device *dev, struct net *net, constchar *pat)
{ return __dev_change_net_namespace(dev, net, pat, 0, NULL);
}
EXPORT_SYMBOL_GPL(dev_change_net_namespace);
/** * dev_change_carrier() - change device carrier * @dev: device * @new_carrier: new value * * Change device carrier * * Return: 0 on success, -errno on failure.
*/ int dev_change_carrier(struct net_device *dev, bool new_carrier)
{ int ret;
netdev_lock_ops(dev);
ret = netif_change_carrier(dev, new_carrier);
netdev_unlock_ops(dev);
return ret;
}
/** * dev_change_tx_queue_len() - change TX queue length of a netdevice * @dev: device * @new_len: new tx queue length * * Return: 0 on success, -errno on failure.
*/ int dev_change_tx_queue_len(struct net_device *dev, unsignedlong new_len)
{ int ret;
netdev_lock_ops(dev);
ret = netif_change_tx_queue_len(dev, new_len);
netdev_unlock_ops(dev);
return ret;
}
/** * dev_change_proto_down() - set carrier according to proto_down * @dev: device * @proto_down: new value * * Return: 0 on success, -errno on failure.
*/ int dev_change_proto_down(struct net_device *dev, bool proto_down)
{ int ret;
netdev_lock_ops(dev);
ret = netif_change_proto_down(dev, proto_down);
netdev_unlock_ops(dev);
return ret;
}
/** * dev_open() - prepare an interface for use * @dev: device to open * @extack: netlink extended ack * * Takes a device from down to up state. The device's private open * function is invoked and then the multicast lists are loaded. Finally * the device is moved into the up state and a %NETDEV_UP message is * sent to the netdev notifier chain. * * Calling this function on an active interface is a nop. On a failure * a negative errno code is returned. * * Return: 0 on success, -errno on failure.
*/ int dev_open(struct net_device *dev, struct netlink_ext_ack *extack)
{ int ret;
netdev_lock_ops(dev);
ret = netif_open(dev, extack);
netdev_unlock_ops(dev);
return ret;
}
EXPORT_SYMBOL(dev_open);
/** * dev_close() - shutdown an interface * @dev: device to shutdown * * This function moves an active device into down state. A * %NETDEV_GOING_DOWN is sent to the netdev notifier chain. The device * is then deactivated and finally a %NETDEV_DOWN is sent to the notifier * chain.
*/ void dev_close(struct net_device *dev)
{
netdev_lock_ops(dev);
netif_close(dev);
netdev_unlock_ops(dev);
}
EXPORT_SYMBOL(dev_close);
int dev_eth_ioctl(struct net_device *dev, struct ifreq *ifr, unsignedint cmd)
{ conststruct net_device_ops *ops = dev->netdev_ops; int ret = -ENODEV;
if (!ops->ndo_eth_ioctl) return -EOPNOTSUPP;
netdev_lock_ops(dev); if (netif_device_present(dev))
ret = ops->ndo_eth_ioctl(dev, ifr, cmd);
netdev_unlock_ops(dev);
return ret;
}
EXPORT_SYMBOL(dev_eth_ioctl);
int dev_set_mtu(struct net_device *dev, int new_mtu)
{ int ret;
netdev_lock_ops(dev);
ret = netif_set_mtu(dev, new_mtu);
netdev_unlock_ops(dev);
return ret;
}
EXPORT_SYMBOL(dev_set_mtu);
/** * dev_disable_lro() - disable Large Receive Offload on a device * @dev: device * * Disable Large Receive Offload (LRO) on a net device. Must be * called under RTNL. This is needed if received packets may be * forwarded to another interface.
*/ void dev_disable_lro(struct net_device *dev)
{
netdev_lock_ops(dev);
netif_disable_lro(dev);
netdev_unlock_ops(dev);
}
EXPORT_SYMBOL(dev_disable_lro);
/** * dev_set_promiscuity() - update promiscuity count on a device * @dev: device * @inc: modifier * * Add or remove promiscuity from a device. While the count in the device * remains above zero the interface remains promiscuous. Once it hits zero * the device reverts back to normal filtering operation. A negative inc * value is used to drop promiscuity on the device. * Return 0 if successful or a negative errno code on error.
*/ int dev_set_promiscuity(struct net_device *dev, int inc)
{ int ret;
netdev_lock_ops(dev);
ret = netif_set_promiscuity(dev, inc);
netdev_unlock_ops(dev);
return ret;
}
EXPORT_SYMBOL(dev_set_promiscuity);
/** * dev_set_allmulti() - update allmulti count on a device * @dev: device * @inc: modifier * * Add or remove reception of all multicast frames to a device. While the * count in the device remains above zero the interface remains listening * to all interfaces. Once it hits zero the device reverts back to normal * filtering operation. A negative @inc value is used to drop the counter * when releasing a resource needing all multicasts. * * Return: 0 on success, -errno on failure.
*/
int dev_set_allmulti(struct net_device *dev, int inc)
{ int ret;
netdev_lock_ops(dev);
ret = netif_set_allmulti(dev, inc, true);
netdev_unlock_ops(dev);
return ret;
}
EXPORT_SYMBOL(dev_set_allmulti);
/** * dev_set_mac_address() - change Media Access Control Address * @dev: device * @ss: new address * @extack: netlink extended ack * * Change the hardware (MAC) address of the device * * Return: 0 on success, -errno on failure.
*/ int dev_set_mac_address(struct net_device *dev, struct sockaddr_storage *ss, struct netlink_ext_ack *extack)
{ int ret;
netdev_lock_ops(dev);
ret = netif_set_mac_address(dev, ss, extack);
netdev_unlock_ops(dev);
return ret;
}
EXPORT_SYMBOL(dev_set_mac_address);
int dev_xdp_propagate(struct net_device *dev, struct netdev_bpf *bpf)
{ int ret;
netdev_lock_ops(dev);
ret = netif_xdp_propagate(dev, bpf);
netdev_unlock_ops(dev);
/** * netdev_state_change() - device changes state * @dev: device to cause notification * * Called to indicate a device has changed state. This function calls * the notifier chains for netdev_chain and sends a NEWLINK message * to the routing socket.
*/ void netdev_state_change(struct net_device *dev)
{
netdev_lock_ops(dev);
netif_state_change(dev);
netdev_unlock_ops(dev);
}
EXPORT_SYMBOL(netdev_state_change);
int dev_set_threaded(struct net_device *dev, enum netdev_napi_threaded threaded)
{ int ret;
netdev_lock(dev);
ret = netif_set_threaded(dev, threaded);
netdev_unlock(dev);
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