Commit | Line | Data |
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ccb1352e | 1 | /* |
caf2ee14 | 2 | * Copyright (c) 2007-2012 Nicira, Inc. |
ccb1352e JG |
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 | ||
26 | static 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 | ||
64 | struct notifier_block ovs_dp_device_notifier = { | |
65 | .notifier_call = dp_device_event | |
66 | }; |