// 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/netdev_lock.h>#include <net/netns/generic.h>int netdev_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_XDP_FEAT_CHANGE: netdev_assert_locked(dev); fallthrough; case NETDEV_CHANGE: case NETDEV_REGISTER: case NETDEV_UP: case NETDEV_DOWN: case NETDEV_GOING_DOWN: netdev_assert_locked_ops_compat(dev); fallthrough; case NETDEV_REBOOT: case NETDEV_UNREGISTER: case NETDEV_CHANGEMTU: case NETDEV_CHANGEADDR: case NETDEV_PRE_CHANGEADDR: 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: ASSERT_RTNL(); break; case NETDEV_CHANGENAME: netdev_assert_locked_ops(dev); ASSERT_RTNL_NET(net); break; } return NOTIFY_DONE;}EXPORT_SYMBOL_NS_GPL(netdev_debug_event, "NETDEV_INTERNAL");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 = netdev_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 = netdev_debug_event,};static int __init rtnl_net_debug_init(void){ int ret; ret = register_pernet_subsys(&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;}subsys_initcall(rtnl_net_debug_init);
// 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/netdev_lock.h>
#include <net/netns/generic.h>
int netdev_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_XDP_FEAT_CHANGE:
netdev_assert_locked(dev);
fallthrough;
case NETDEV_CHANGE:
case NETDEV_REGISTER:
case NETDEV_UP:
case NETDEV_DOWN:
case NETDEV_GOING_DOWN:
netdev_assert_locked_ops_compat(dev);
fallthrough;
case NETDEV_REBOOT:
case NETDEV_UNREGISTER:
case NETDEV_CHANGEMTU:
case NETDEV_CHANGEADDR:
case NETDEV_PRE_CHANGEADDR:
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:
ASSERT_RTNL();
break;
case NETDEV_CHANGENAME:
netdev_assert_locked_ops(dev);
ASSERT_RTNL_NET(net);
break;
}
return NOTIFY_DONE;
}
EXPORT_SYMBOL_NS_GPL(netdev_debug_event, "NETDEV_INTERNAL");
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 = netdev_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 = netdev_debug_event,
};
static int __init rtnl_net_debug_init(void)
{
int ret;
ret = register_pernet_subsys(&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;
}
subsys_initcall(rtnl_net_debug_init);