| /* |
| * Copyright (c) 2012 Mellanox Technologies. - All rights reserved. |
| * |
| * This software is available to you under a choice of one of two |
| * licenses. You may choose to be licensed under the terms of the GNU |
| * General Public License (GPL) Version 2, available from the file |
| * COPYING in the main directory of this source tree, or the |
| * OpenIB.org BSD license below: |
| * |
| * Redistribution and use in source and binary forms, with or |
| * without modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * - Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * |
| * - Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials |
| * provided with the distribution. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| */ |
| |
| #include <linux/netdevice.h> |
| #include <linux/module.h> |
| #include <net/rtnetlink.h> |
| #include "ipoib.h" |
| |
| static const struct nla_policy ipoib_policy[IFLA_IPOIB_MAX + 1] = { |
| [IFLA_IPOIB_PKEY] = { .type = NLA_U16 }, |
| }; |
| |
| static int ipoib_new_child_link(struct net *src_net, struct net_device *dev, |
| struct nlattr *tb[], struct nlattr *data[]) |
| { |
| struct net_device *pdev; |
| struct ipoib_dev_priv *ppriv; |
| u16 child_pkey; |
| int err; |
| |
| if (!tb[IFLA_LINK]) |
| return -EINVAL; |
| |
| pdev = __dev_get_by_index(src_net, nla_get_u32(tb[IFLA_LINK])); |
| if (!pdev) |
| return -ENODEV; |
| |
| ppriv = netdev_priv(pdev); |
| |
| if (test_bit(IPOIB_FLAG_SUBINTERFACE, &ppriv->flags)) { |
| ipoib_warn(ppriv, "child creation disallowed for child devices\n"); |
| return -EINVAL; |
| } |
| |
| if (!data || !data[IFLA_IPOIB_PKEY]) { |
| ipoib_dbg(ppriv, "no pkey specified, using parent pkey\n"); |
| child_pkey = ppriv->pkey; |
| } else |
| child_pkey = nla_get_u16(data[IFLA_IPOIB_PKEY]); |
| |
| err = __ipoib_vlan_add(ppriv, netdev_priv(dev), child_pkey, IPOIB_RTNL_CHILD); |
| |
| return err; |
| } |
| |
| static void ipoib_unregister_child_dev(struct net_device *dev, struct list_head *head) |
| { |
| struct ipoib_dev_priv *priv, *ppriv; |
| |
| priv = netdev_priv(dev); |
| ppriv = netdev_priv(priv->parent); |
| |
| mutex_lock(&ppriv->vlan_mutex); |
| unregister_netdevice_queue(dev, head); |
| list_del(&priv->list); |
| mutex_unlock(&ppriv->vlan_mutex); |
| } |
| |
| static size_t ipoib_get_size(const struct net_device *dev) |
| { |
| return nla_total_size(2); /* IFLA_IPOIB_PKEY */ |
| } |
| |
| static struct rtnl_link_ops ipoib_link_ops __read_mostly = { |
| .kind = "ipoib", |
| .maxtype = IFLA_IPOIB_MAX, |
| .policy = ipoib_policy, |
| .priv_size = sizeof(struct ipoib_dev_priv), |
| .setup = ipoib_setup, |
| .newlink = ipoib_new_child_link, |
| .dellink = ipoib_unregister_child_dev, |
| .get_size = ipoib_get_size, |
| }; |
| |
| int __init ipoib_netlink_init(void) |
| { |
| return rtnl_link_register(&ipoib_link_ops); |
| } |
| |
| void __exit ipoib_netlink_fini(void) |
| { |
| rtnl_link_unregister(&ipoib_link_ops); |
| } |
| |
| MODULE_ALIAS_RTNL_LINK("ipoib"); |