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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- * Copyright (c) 2007-2012 Nicira, Inc.
- */
- #include <linux/netdevice.h>
- #include <net/genetlink.h>
- #include <net/netns/generic.h>
- #include "datapath.h"
- #include "vport-internal_dev.h"
- #include "vport-netdev.h"
- static void dp_detach_port_notify(struct vport *vport)
- {
- struct sk_buff *notify;
- struct datapath *dp;
- dp = vport->dp;
- notify = ovs_vport_cmd_build_info(vport, ovs_dp_get_net(dp),
- 0, 0, OVS_VPORT_CMD_DEL);
- ovs_dp_detach_port(vport);
- if (IS_ERR(notify)) {
- genl_set_err(&dp_vport_genl_family, ovs_dp_get_net(dp), 0,
- 0, PTR_ERR(notify));
- return;
- }
- genlmsg_multicast_netns(&dp_vport_genl_family,
- ovs_dp_get_net(dp), notify, 0,
- 0, GFP_KERNEL);
- }
- void ovs_dp_notify_wq(struct work_struct *work)
- {
- struct ovs_net *ovs_net = container_of(work, struct ovs_net, dp_notify_work);
- struct datapath *dp;
- ovs_lock();
- list_for_each_entry(dp, &ovs_net->dps, list_node) {
- int i;
- for (i = 0; i < DP_VPORT_HASH_BUCKETS; i++) {
- struct vport *vport;
- struct hlist_node *n;
- hlist_for_each_entry_safe(vport, n, &dp->ports[i], dp_hash_node) {
- if (vport->ops->type == OVS_VPORT_TYPE_INTERNAL)
- continue;
- if (!(netif_is_ovs_port(vport->dev)))
- dp_detach_port_notify(vport);
- }
- }
- }
- ovs_unlock();
- }
- static int dp_device_event(struct notifier_block *unused, unsigned long event,
- void *ptr)
- {
- struct ovs_net *ovs_net;
- struct net_device *dev = netdev_notifier_info_to_dev(ptr);
- struct vport *vport = NULL;
- if (!ovs_is_internal_dev(dev))
- vport = ovs_netdev_get_vport(dev);
- if (!vport)
- return NOTIFY_DONE;
- if (event == NETDEV_UNREGISTER) {
- /* upper_dev_unlink and decrement promisc immediately */
- ovs_netdev_detach_dev(vport);
- /* schedule vport destroy, dev_put and genl notification */
- ovs_net = net_generic(dev_net(dev), ovs_net_id);
- queue_work(system_wq, &ovs_net->dp_notify_work);
- }
- return NOTIFY_DONE;
- }
- struct notifier_block ovs_dp_device_notifier = {
- .notifier_call = dp_device_event
- };
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