1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
// SPDX-License-Identifier: GPL-2.0-or-later
/* Copyright Amazon.com Inc. or its affiliates. */
#include <linux/init.h>
#include <linux/netdevice.h>
#include <linux/notifier.h>
#include <linux/rtnetlink.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
static int rtnl_net_debug_event(struct notifier_block *nb,
unsigned long event, void *ptr)
{
struct net_device *dev = netdev_notifier_info_to_dev(ptr);
struct net *net = dev_net(dev);
enum netdev_cmd cmd = event;
/* Keep enum and don't add default to trigger -Werror=switch */
switch (cmd) {
case NETDEV_UP:
case NETDEV_DOWN:
case NETDEV_REBOOT:
case NETDEV_CHANGE:
case NETDEV_REGISTER:
case NETDEV_UNREGISTER:
case NETDEV_CHANGEMTU:
case NETDEV_CHANGEADDR:
case NETDEV_PRE_CHANGEADDR:
case NETDEV_GOING_DOWN:
case NETDEV_CHANGENAME:
case NETDEV_FEAT_CHANGE:
case NETDEV_BONDING_FAILOVER:
case NETDEV_PRE_UP:
case NETDEV_PRE_TYPE_CHANGE:
case NETDEV_POST_TYPE_CHANGE:
case NETDEV_POST_INIT:
case NETDEV_PRE_UNINIT:
case NETDEV_RELEASE:
case NETDEV_NOTIFY_PEERS:
case NETDEV_JOIN:
case NETDEV_CHANGEUPPER:
case NETDEV_RESEND_IGMP:
case NETDEV_PRECHANGEMTU:
case NETDEV_CHANGEINFODATA:
case NETDEV_BONDING_INFO:
case NETDEV_PRECHANGEUPPER:
case NETDEV_CHANGELOWERSTATE:
case NETDEV_UDP_TUNNEL_PUSH_INFO:
case NETDEV_UDP_TUNNEL_DROP_INFO:
case NETDEV_CHANGE_TX_QUEUE_LEN:
case NETDEV_CVLAN_FILTER_PUSH_INFO:
case NETDEV_CVLAN_FILTER_DROP_INFO:
case NETDEV_SVLAN_FILTER_PUSH_INFO:
case NETDEV_SVLAN_FILTER_DROP_INFO:
case NETDEV_OFFLOAD_XSTATS_ENABLE:
case NETDEV_OFFLOAD_XSTATS_DISABLE:
case NETDEV_OFFLOAD_XSTATS_REPORT_USED:
case NETDEV_OFFLOAD_XSTATS_REPORT_DELTA:
case NETDEV_XDP_FEAT_CHANGE:
ASSERT_RTNL();
break;
/* Once an event fully supports RTNL_NET, move it here
* and remove "if (0)" below.
*
* case NETDEV_XXX:
* ASSERT_RTNL_NET(net);
* break;
*/
}
/* Just to avoid unused-variable error for dev and net. */
if (0)
ASSERT_RTNL_NET(net);
return NOTIFY_DONE;
}
static int rtnl_net_debug_net_id;
static int __net_init rtnl_net_debug_net_init(struct net *net)
{
struct notifier_block *nb;
nb = net_generic(net, rtnl_net_debug_net_id);
nb->notifier_call = rtnl_net_debug_event;
return register_netdevice_notifier_net(net, nb);
}
static void __net_exit rtnl_net_debug_net_exit(struct net *net)
{
struct notifier_block *nb;
nb = net_generic(net, rtnl_net_debug_net_id);
unregister_netdevice_notifier_net(net, nb);
}
static struct pernet_operations rtnl_net_debug_net_ops __net_initdata = {
.init = rtnl_net_debug_net_init,
.exit = rtnl_net_debug_net_exit,
.id = &rtnl_net_debug_net_id,
.size = sizeof(struct notifier_block),
};
static struct notifier_block rtnl_net_debug_block = {
.notifier_call = rtnl_net_debug_event,
};
static int __init rtnl_net_debug_init(void)
{
int ret;
ret = register_pernet_device(&rtnl_net_debug_net_ops);
if (ret)
return ret;
ret = register_netdevice_notifier(&rtnl_net_debug_block);
if (ret)
unregister_pernet_subsys(&rtnl_net_debug_net_ops);
return ret;
}
static void __exit rtnl_net_debug_exit(void)
{
unregister_netdevice_notifier(&rtnl_net_debug_block);
unregister_pernet_device(&rtnl_net_debug_net_ops);
}
subsys_initcall(rtnl_net_debug_init);
|
