mirror of
https://github.com/torvalds/linux
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351638e7de
So far, only net_device * could be passed along with netdevice notifier event. This patch provides a possibility to pass custom structure able to provide info that event listener needs to know. Signed-off-by: Jiri Pirko <jiri@resnulli.us> v2->v3: fix typo on simeth shortened dev_getter shortened notifier_info struct name v1->v2: fix notifier_call parameter in call_netdevice_notifier() Signed-off-by: David S. Miller <davem@davemloft.net>
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/*
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* Copyright (c) 2007-2012 Nicira, Inc.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA
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*/
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#include <linux/netdevice.h>
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#include <net/genetlink.h>
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#include <net/netns/generic.h>
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#include "datapath.h"
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#include "vport-internal_dev.h"
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#include "vport-netdev.h"
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static void dp_detach_port_notify(struct vport *vport)
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{
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struct sk_buff *notify;
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struct datapath *dp;
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dp = vport->dp;
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notify = ovs_vport_cmd_build_info(vport, 0, 0,
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OVS_VPORT_CMD_DEL);
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ovs_dp_detach_port(vport);
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if (IS_ERR(notify)) {
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netlink_set_err(ovs_dp_get_net(dp)->genl_sock, 0,
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ovs_dp_vport_multicast_group.id,
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PTR_ERR(notify));
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return;
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}
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genlmsg_multicast_netns(ovs_dp_get_net(dp), notify, 0,
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ovs_dp_vport_multicast_group.id,
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GFP_KERNEL);
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}
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void ovs_dp_notify_wq(struct work_struct *work)
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{
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struct ovs_net *ovs_net = container_of(work, struct ovs_net, dp_notify_work);
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struct datapath *dp;
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ovs_lock();
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list_for_each_entry(dp, &ovs_net->dps, list_node) {
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int i;
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for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) {
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struct vport *vport;
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struct hlist_node *n;
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hlist_for_each_entry_safe(vport, n, &dp->ports[i], dp_hash_node) {
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struct netdev_vport *netdev_vport;
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if (vport->ops->type != OVS_VPORT_TYPE_NETDEV)
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continue;
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netdev_vport = netdev_vport_priv(vport);
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if (netdev_vport->dev->reg_state == NETREG_UNREGISTERED ||
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netdev_vport->dev->reg_state == NETREG_UNREGISTERING)
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dp_detach_port_notify(vport);
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}
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}
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}
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ovs_unlock();
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}
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static int dp_device_event(struct notifier_block *unused, unsigned long event,
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void *ptr)
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{
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struct ovs_net *ovs_net;
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struct net_device *dev = netdev_notifier_info_to_dev(ptr);
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struct vport *vport = NULL;
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if (!ovs_is_internal_dev(dev))
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vport = ovs_netdev_get_vport(dev);
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if (!vport)
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return NOTIFY_DONE;
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if (event == NETDEV_UNREGISTER) {
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ovs_net = net_generic(dev_net(dev), ovs_net_id);
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queue_work(system_wq, &ovs_net->dp_notify_work);
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}
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return NOTIFY_DONE;
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}
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struct notifier_block ovs_dp_device_notifier = {
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.notifier_call = dp_device_event
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};
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