1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (c) 2007-2012 Nicira, Inc.
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #include <linux/netdevice.h>
7*4882a593Smuzhiyun #include <net/genetlink.h>
8*4882a593Smuzhiyun #include <net/netns/generic.h>
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include "datapath.h"
11*4882a593Smuzhiyun #include "vport-internal_dev.h"
12*4882a593Smuzhiyun #include "vport-netdev.h"
13*4882a593Smuzhiyun
dp_detach_port_notify(struct vport * vport)14*4882a593Smuzhiyun static void dp_detach_port_notify(struct vport *vport)
15*4882a593Smuzhiyun {
16*4882a593Smuzhiyun struct sk_buff *notify;
17*4882a593Smuzhiyun struct datapath *dp;
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun dp = vport->dp;
20*4882a593Smuzhiyun notify = ovs_vport_cmd_build_info(vport, ovs_dp_get_net(dp),
21*4882a593Smuzhiyun 0, 0, OVS_VPORT_CMD_DEL);
22*4882a593Smuzhiyun ovs_dp_detach_port(vport);
23*4882a593Smuzhiyun if (IS_ERR(notify)) {
24*4882a593Smuzhiyun genl_set_err(&dp_vport_genl_family, ovs_dp_get_net(dp), 0,
25*4882a593Smuzhiyun 0, PTR_ERR(notify));
26*4882a593Smuzhiyun return;
27*4882a593Smuzhiyun }
28*4882a593Smuzhiyun
29*4882a593Smuzhiyun genlmsg_multicast_netns(&dp_vport_genl_family,
30*4882a593Smuzhiyun ovs_dp_get_net(dp), notify, 0,
31*4882a593Smuzhiyun 0, GFP_KERNEL);
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun
ovs_dp_notify_wq(struct work_struct * work)34*4882a593Smuzhiyun void ovs_dp_notify_wq(struct work_struct *work)
35*4882a593Smuzhiyun {
36*4882a593Smuzhiyun struct ovs_net *ovs_net = container_of(work, struct ovs_net, dp_notify_work);
37*4882a593Smuzhiyun struct datapath *dp;
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun ovs_lock();
40*4882a593Smuzhiyun list_for_each_entry(dp, &ovs_net->dps, list_node) {
41*4882a593Smuzhiyun int i;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) {
44*4882a593Smuzhiyun struct vport *vport;
45*4882a593Smuzhiyun struct hlist_node *n;
46*4882a593Smuzhiyun
47*4882a593Smuzhiyun hlist_for_each_entry_safe(vport, n, &dp->ports[i], dp_hash_node) {
48*4882a593Smuzhiyun if (vport->ops->type == OVS_VPORT_TYPE_INTERNAL)
49*4882a593Smuzhiyun continue;
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun if (!(netif_is_ovs_port(vport->dev)))
52*4882a593Smuzhiyun dp_detach_port_notify(vport);
53*4882a593Smuzhiyun }
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun }
56*4882a593Smuzhiyun ovs_unlock();
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
dp_device_event(struct notifier_block * unused,unsigned long event,void * ptr)59*4882a593Smuzhiyun static int dp_device_event(struct notifier_block *unused, unsigned long event,
60*4882a593Smuzhiyun void *ptr)
61*4882a593Smuzhiyun {
62*4882a593Smuzhiyun struct ovs_net *ovs_net;
63*4882a593Smuzhiyun struct net_device *dev = netdev_notifier_info_to_dev(ptr);
64*4882a593Smuzhiyun struct vport *vport = NULL;
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun if (!ovs_is_internal_dev(dev))
67*4882a593Smuzhiyun vport = ovs_netdev_get_vport(dev);
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun if (!vport)
70*4882a593Smuzhiyun return NOTIFY_DONE;
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun if (event == NETDEV_UNREGISTER) {
73*4882a593Smuzhiyun /* upper_dev_unlink and decrement promisc immediately */
74*4882a593Smuzhiyun ovs_netdev_detach_dev(vport);
75*4882a593Smuzhiyun
76*4882a593Smuzhiyun /* schedule vport destroy, dev_put and genl notification */
77*4882a593Smuzhiyun ovs_net = net_generic(dev_net(dev), ovs_net_id);
78*4882a593Smuzhiyun queue_work(system_wq, &ovs_net->dp_notify_work);
79*4882a593Smuzhiyun }
80*4882a593Smuzhiyun
81*4882a593Smuzhiyun return NOTIFY_DONE;
82*4882a593Smuzhiyun }
83*4882a593Smuzhiyun
84*4882a593Smuzhiyun struct notifier_block ovs_dp_device_notifier = {
85*4882a593Smuzhiyun .notifier_call = dp_device_event
86*4882a593Smuzhiyun };
87