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https://github.com/edk2-porting/linux-next.git
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bond: Implement a basic set of rtnl link ops
This implements a basic set of rtnl link ops and takes advantage of the fact that rtnl_link_unregister kills all of the surviving devices to all us to kill bond_free_all. A module alias is added so ip link add can pull in the bonding module. Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -4612,22 +4612,6 @@ static void bond_uninit(struct net_device *bond_dev)
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netif_addr_unlock_bh(bond_dev);
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}
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/* Unregister and free all bond devices.
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* Caller must hold rtnl_lock.
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*/
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static void bond_free_all(void)
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{
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struct bonding *bond, *nxt;
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list_for_each_entry_safe(bond, nxt, &bond_dev_list, bond_list) {
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struct net_device *bond_dev = bond->dev;
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unregister_netdevice(bond_dev);
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}
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bond_destroy_proc_dir();
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}
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/*------------------------- Module initialization ---------------------------*/
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/*
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@ -5065,6 +5049,23 @@ static int bond_init(struct net_device *bond_dev)
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return 0;
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}
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static int bond_validate(struct nlattr *tb[], struct nlattr *data[])
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{
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if (tb[IFLA_ADDRESS]) {
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if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
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return -EINVAL;
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if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
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return -EADDRNOTAVAIL;
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}
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return 0;
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}
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static struct rtnl_link_ops bond_link_ops __read_mostly = {
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.kind = "bond",
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.setup = bond_setup,
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.validate = bond_validate,
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};
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/* Create a new bond based on the specified name and bonding parameters.
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* If name is NULL, obtain a suitable "bond%d" name for us.
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* Caller must NOT hold rtnl_lock; we need to release it here before we
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@ -5086,6 +5087,8 @@ int bond_create(const char *name)
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goto out;
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}
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bond_dev->rtnl_link_ops = &bond_link_ops;
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if (!name) {
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res = dev_alloc_name(bond_dev, "bond%d");
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if (res < 0)
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@ -5115,6 +5118,10 @@ static int __init bonding_init(void)
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bond_create_proc_dir();
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res = rtnl_link_register(&bond_link_ops);
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if (res)
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goto err;
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for (i = 0; i < max_bonds; i++) {
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res = bond_create(NULL);
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if (res)
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@ -5128,14 +5135,12 @@ static int __init bonding_init(void)
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register_netdevice_notifier(&bond_netdev_notifier);
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register_inetaddr_notifier(&bond_inetaddr_notifier);
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bond_register_ipv6_notifier();
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goto out;
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err:
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rtnl_lock();
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bond_free_all();
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rtnl_unlock();
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out:
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return res;
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err:
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rtnl_link_unregister(&bond_link_ops);
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bond_destroy_proc_dir();
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goto out;
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}
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@ -5147,9 +5152,8 @@ static void __exit bonding_exit(void)
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bond_destroy_sysfs();
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rtnl_lock();
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bond_free_all();
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rtnl_unlock();
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rtnl_link_unregister(&bond_link_ops);
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bond_destroy_proc_dir();
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}
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module_init(bonding_init);
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@ -5158,3 +5162,4 @@ MODULE_LICENSE("GPL");
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MODULE_VERSION(DRV_VERSION);
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MODULE_DESCRIPTION(DRV_DESCRIPTION ", v" DRV_VERSION);
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MODULE_AUTHOR("Thomas Davis, tadavis@lbl.gov and many others");
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MODULE_ALIAS_RTNL_LINK("bond");
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