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