1// SPDX-License-Identifier: GPL-2.0-only
 2/*
 3 * Copyright (c) 2007-2012 Nicira, Inc.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 4 */
 5
 6#include <linux/netdevice.h>
 7#include <net/genetlink.h>
 8#include <net/netns/generic.h>
 9
10#include "datapath.h"
11#include "vport-internal_dev.h"
12#include "vport-netdev.h"
13
14static void dp_detach_port_notify(struct vport *vport)
15{
16	struct sk_buff *notify;
17	struct datapath *dp;
18
19	dp = vport->dp;
20	notify = ovs_vport_cmd_build_info(vport, ovs_dp_get_net(dp),
21					  0, 0, OVS_VPORT_CMD_DEL);
22	ovs_dp_detach_port(vport);
23	if (IS_ERR(notify)) {
24		genl_set_err(&dp_vport_genl_family, ovs_dp_get_net(dp), 0,
25			     0, PTR_ERR(notify));
26		return;
27	}
28
29	genlmsg_multicast_netns(&dp_vport_genl_family,
30				ovs_dp_get_net(dp), notify, 0,
31				0, GFP_KERNEL);
32}
33
34void ovs_dp_notify_wq(struct work_struct *work)
35{
36	struct ovs_net *ovs_net = container_of(work, struct ovs_net, dp_notify_work);
37	struct datapath *dp;
38
39	ovs_lock();
40	list_for_each_entry(dp, &ovs_net->dps, list_node) {
41		int i;
42
43		for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) {
44			struct vport *vport;
45			struct hlist_node *n;
46
47			hlist_for_each_entry_safe(vport, n, &dp->ports[i], dp_hash_node) {
48				if (vport->ops->type == OVS_VPORT_TYPE_INTERNAL)
49					continue;
50
51				if (!(netif_is_ovs_port(vport->dev)))
52					dp_detach_port_notify(vport);
53			}
54		}
55	}
56	ovs_unlock();
57}
58
59static int dp_device_event(struct notifier_block *unused, unsigned long event,
60			   void *ptr)
61{
62	struct ovs_net *ovs_net;
63	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
64	struct vport *vport = NULL;
65
66	if (!ovs_is_internal_dev(dev))
 
 
67		vport = ovs_netdev_get_vport(dev);
68
69	if (!vport)
70		return NOTIFY_DONE;
71
72	if (event == NETDEV_UNREGISTER) {
73		/* upper_dev_unlink and decrement promisc immediately */
74		ovs_netdev_detach_dev(vport);
75
76		/* schedule vport destroy, dev_put and genl notification */
77		ovs_net = net_generic(dev_net(dev), ovs_net_id);
78		queue_work(system_wq, &ovs_net->dp_notify_work);
 
 
 
 
 
 
 
 
 
 
 
 
79	}
80
81	return NOTIFY_DONE;
82}
83
84struct notifier_block ovs_dp_device_notifier = {
85	.notifier_call = dp_device_event
86};

 
 1/*
 2 * Copyright (c) 2007-2011 Nicira Networks.
 3 *
 4 * This program is free software; you can redistribute it and/or
 5 * modify it under the terms of version 2 of the GNU General Public
 6 * License as published by the Free Software Foundation.
 7 *
 8 * This program is distributed in the hope that it will be useful, but
 9 * WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
16 * 02110-1301, USA
17 */
18
19#include <linux/netdevice.h>
20#include <net/genetlink.h>
 
21
22#include "datapath.h"
23#include "vport-internal_dev.h"
24#include "vport-netdev.h"
25
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
26static int dp_device_event(struct notifier_block *unused, unsigned long event,
27			   void *ptr)
28{
29	struct net_device *dev = ptr;
30	struct vport *vport;
 
31
32	if (ovs_is_internal_dev(dev))
33		vport = ovs_internal_dev_get_vport(dev);
34	else
35		vport = ovs_netdev_get_vport(dev);
36
37	if (!vport)
38		return NOTIFY_DONE;
39
40	switch (event) {
41	case NETDEV_UNREGISTER:
42		if (!ovs_is_internal_dev(dev)) {
43			struct sk_buff *notify;
44
45			notify = ovs_vport_cmd_build_info(vport, 0, 0,
46							  OVS_VPORT_CMD_DEL);
47			ovs_dp_detach_port(vport);
48			if (IS_ERR(notify)) {
49				netlink_set_err(init_net.genl_sock, 0,
50						ovs_dp_vport_multicast_group.id,
51						PTR_ERR(notify));
52				break;
53			}
54
55			genlmsg_multicast(notify, 0, ovs_dp_vport_multicast_group.id,
56					  GFP_KERNEL);
57		}
58		break;
59	}
60
61	return NOTIFY_DONE;
62}
63
64struct notifier_block ovs_dp_device_notifier = {
65	.notifier_call = dp_device_event
66};