linux/net/core
Kirill Tkhai 554873e517 net: Do not take net_rwsem in __rtnl_link_unregister()
This function calls call_netdevice_notifier(), which also
may take net_rwsem. So, we can't use net_rwsem here.

This patch makes callers of this functions take pernet_ops_rwsem,
like register_netdevice_notifier() does. This will protect
the modifications of net_namespace_list, and allows notifiers
to take it (they won't have to care about context).

Since __rtnl_link_unregister() is used on module load
and unload (which are not frequent operations), this looks
for me better, than make all call_netdevice_notifier()
always executing in "protected net_namespace_list" context.

Also, this fixes the problem we had a deal in 328fbe747a
"Close race between {un, }register_netdevice_notifier and ...",
and guarantees __rtnl_link_unregister() does not skip
exitting net.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-03-31 22:24:58 -04:00
..
datagram.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
dev_addr_lists.c
dev_ioctl.c net: don't unnecessarily load kernel modules in dev_ioctl() 2018-03-07 15:12:58 -05:00
dev.c net: Remove net_rwsem from {, un}register_netdevice_notifier() 2018-03-31 22:24:58 -04:00
devlink.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-23 11:31:58 -04:00
drop_monitor.c
dst_cache.c net: core: dst_cache_set_ip6: Rename 'addr' parameter to 'saddr' for consistency 2018-03-05 12:52:45 -05:00
dst.c
ethtool.c sfp/phylink: move module EEPROM ethtool access into netdev core ethtool 2018-03-30 10:11:06 -04:00
fib_notifier.c net: Fix fib notifer to return errno 2018-03-29 14:10:30 -04:00
fib_rules.c net: Move call_fib_rule_notifiers up in fib_nl_newrule 2018-03-29 14:10:30 -04:00
filter.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-23 11:31:58 -04:00
flow_dissector.c net: Remove unused get_hash_from_flow functions 2018-03-04 13:04:23 -05:00
gen_estimator.c net_sched: gen_estimator: fix broken estimators based on percpu stats 2018-02-23 12:35:46 -05:00
gen_stats.c
gro_cells.c
hwbm.c
link_watch.c net: link_watch: mark bonding link events urgent 2018-01-23 19:43:30 -05:00
lwt_bpf.c
lwtunnel.c
Makefile xdp: base API for new XDP rx-queue info concept 2018-01-05 15:21:20 -08:00
neighbour.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-01-17 00:10:42 -05:00
net_namespace.c net: Do not take net_rwsem in __rtnl_link_unregister() 2018-03-31 22:24:58 -04:00
net-procfs.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
net-sysfs.c net: Use octal not symbolic permissions 2018-03-26 12:07:48 -04:00
net-sysfs.h
net-traces.c
netclassid_cgroup.c
netevent.c
netpoll.c
netprio_cgroup.c
pktgen.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ptp_classifier.c
request_sock.c
rtnetlink.c net: Do not take net_rwsem in __rtnl_link_unregister() 2018-03-31 22:24:58 -04:00
scm.c
secure_seq.c
skbuff.c net: permit skb_segment on head_frag frag_list skb 2018-03-25 16:46:04 -04:00
sock_diag.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
sock_reuseport.c soreuseport: fix mem leak in reuseport_add_sock() 2018-02-02 19:47:03 -05:00
sock.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
stream.c vfs: do bulk POLL* -> EPOLL* replacement 2018-02-11 14:34:03 -08:00
sysctl_net_core.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
timestamping.c
tso.c
utils.c
xdp.c xdp/qede: setup xdp_rxq_info and intro xdp_rxq_info_is_reg 2018-01-05 15:21:21 -08:00