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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124// 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: netdev_assert_locked_ops_compat(dev); fallthrough; case NETDEV_DOWN: case NETDEV_REBOOT: case NETDEV_UNREGISTER: case NETDEV_CHANGEMTU: case NETDEV_CHANGEADDR: case NETDEV_PRE_CHANGEADDR: case NETDEV_GOING_DOWN: 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);