mirror of
https://github.com/openvswitch/ovs
synced 2025-10-13 14:07:02 +00:00
7237e4f4b6
These steps are sequentially in lockstep, so we might as well combine them. This expands the region over which the vport_lock is held. I didn't carefully verify that this was OK. This also eliminates the synchronize_rcu() call from destruction of tunnel vports, since they didn't appear to me to need it. It should be possible to eliminate the synchronize_rcu() from the netdev, patch, and internal_dev vports, but this commit does not do that. Signed-off-by: Ben Pfaff <blp@nicira.com> Acked-by: Jesse Gross <jesse@nicira.com>
63 lines
1.3 KiB
C
63 lines
1.3 KiB
C
/*
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* Distributed under the terms of the GNU GPL version 2.
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* Copyright (c) 2007, 2008, 2009, 2010 Nicira Networks.
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*
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* Significant portions of this file may be copied from parts of the Linux
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* kernel, by Linus Torvalds and others.
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*/
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/* Handle changes to managed devices */
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#include <linux/netdevice.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 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 net_device *dev = ptr;
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struct vport *vport;
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struct datapath *dp;
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if (is_internal_dev(dev))
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vport = internal_dev_get_vport(dev);
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else
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vport = netdev_get_vport(dev);
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if (!vport)
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return NOTIFY_DONE;
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dp = vport->dp;
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switch (event) {
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case NETDEV_UNREGISTER:
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if (!is_internal_dev(dev)) {
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mutex_lock(&dp->mutex);
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dp_detach_port(vport);
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mutex_unlock(&dp->mutex);
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}
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break;
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case NETDEV_CHANGENAME:
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if (vport->port_no != ODPP_LOCAL) {
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mutex_lock(&dp->mutex);
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dp_sysfs_del_if(vport);
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dp_sysfs_add_if(vport);
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mutex_unlock(&dp->mutex);
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}
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break;
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case NETDEV_CHANGEMTU:
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if (!is_internal_dev(dev))
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set_internal_devs_mtu(dp);
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break;
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}
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return NOTIFY_DONE;
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}
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struct notifier_block dp_device_notifier = {
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.notifier_call = dp_device_event
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};
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