Eric Dumazet ac3d9dd034 netpoll: make ndo_poll_controller() optional ... As diagnosed by Song Liu, ndo_poll_controller() can be very dangerous on loaded hosts, since the cpu calling ndo_poll_controller() might steal all NAPI contexts (for all RX/TX queues of the NIC). This capture can last for unlimited amount of time, since one cpu is generally not able to drain all the queues under load. It seems that all networking drivers that do use NAPI for their TX completions, should not provide a ndo_poll_controller(). NAPI drivers have netpoll support already handled in core networking stack, since netpoll_poll_dev() uses poll_napi(dev) to iterate through registered NAPI contexts for a device. This patch allows netpoll_poll_dev() to process NAPI contexts even for drivers not providing ndo_poll_controller(), allowing for following patches in NAPI drivers. Also we export netpoll_poll_dev() so that it can be called by bonding/team drivers in following patches. Reported-by: Song Liu <songliubraving@fb.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Tested-by: Song Liu <songliubraving@fb.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-09-23 21:55:24 -07:00
..
datagram.c	net: simplify sock_poll_wait	2018-07-30 09:10:25 -07:00
dev_addr_lists.c	net: change the comment of dev_mc_init	2018-04-19 12:58:20 -04:00
dev_ioctl.c	net: remove redundant input checks in SIOCSIFTXQLEN case of dev_ifsioc	2018-07-24 11:36:15 -07:00
dev.c	notifier: Remove notifier header file wherever not used	2018-08-30 12:56:40 +02:00
devlink.c	devlink: double free in devlink_resource_fill()	2018-09-21 19:19:07 -07:00
drop_monitor.c	treewide: setup_timer() -> timer_setup()	2017-11-21 15:57:07 -08:00
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	netfilter: nf_tables: add tunnel support	2018-08-03 21:12:12 +02:00
ethtool.c	net-ethtool: ETHTOOL_GUFO did not and should not require CAP_NET_ADMIN	2018-09-22 17:11:26 -07:00
failover.c	net: Introduce generic failover module	2018-05-28 22:59:54 -04:00
fib_notifier.c	net: Fix fib notifer to return errno	2018-03-29 14:10:30 -04:00
fib_rules.c	fib_rules: NULL check before kfree is not needed	2018-07-30 09:44:06 -07:00
filter.c	bpf: use __GFP_COMP while allocating page	2018-09-12 23:47:28 +02:00
flow_dissector.c	flow_dissector: allow dissection of tunnel options from metadata	2018-08-07 12:22:14 -07:00
gen_estimator.c	net: core: protect rate estimator statistics pointer with lock	2018-08-11 12:37:10 -07:00
gen_stats.c	gen_stats: Fix netlink stats dumping in the presence of padding	2018-07-04 14:44:45 +09:00
gro_cells.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
hwbm.c
link_watch.c	net: link_watch: mark bonding link events urgent	2018-01-23 19:43:30 -05:00
lwt_bpf.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2018-08-07 11:02:05 -07:00
lwtunnel.c	ipv6: sr: define core operations for seg6local lightweight tunnel	2017-08-07 14:16:22 -07:00
Makefile	net: Introduce generic failover module	2018-05-28 22:59:54 -04:00
neighbour.c	neighbour: confirm neigh entries when ARP packet is received	2018-09-13 12:01:29 -07:00
net_namespace.c	Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax	2018-08-26 11:48:42 -07:00
net-procfs.c	proc: introduce proc_create_net{,_data}	2018-05-16 07:24:30 +02:00
net-sysfs.c	net: allow to call netif_reset_xps_queues() under cpus_read_lock	2018-08-09 14:25:06 -07:00
net-sysfs.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
net-traces.c	net/ipv6: Udate fib6_table_lookup tracepoint	2018-05-24 23:01:15 -04:00
netclassid_cgroup.c	cgroup: add @flags to css_task_iter_start() and implement CSS_TASK_ITER_PROCS	2017-07-21 11:14:51 -04:00
netevent.c
netpoll.c	netpoll: make ndo_poll_controller() optional	2018-09-23 21:55:24 -07:00
netprio_cgroup.c	net: remove duplicate includes	2017-12-13 13:18:46 -05:00
page_pool.c	net/page_pool: Fix inconsistent lock state warning	2018-07-19 23:23:01 -07:00
pktgen.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next	2018-07-27 09:33:37 -07:00
ptp_classifier.c
request_sock.c	ipv4: Namespaceify tcp_max_syn_backlog knob	2016-12-29 11:38:31 -05:00
rtnetlink.c	net: rtnl_configure_link: fix dev flags changes arg to __dev_notify_flags	2018-09-13 11:01:32 -07:00
scm.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/user.h>	2017-03-02 08:42:29 +01:00
secure_seq.c	infiniband: i40iw, nes: don't use wall time for TCP sequence numbers	2018-07-11 12:10:19 -06:00
skbuff.c	tcp: really ignore MSG_ZEROCOPY if no SO_ZEROCOPY	2018-09-07 23:11:06 -07:00
sock_diag.c	net: sock_diag: Fix spectre v1 gadget in __sock_diag_cmd()	2018-08-14 10:01:24 -07:00
sock_reuseport.c	bpf: Enable BPF_PROG_TYPE_SK_REUSEPORT bpf prog in reuseport selection	2018-08-11 01:58:46 +02:00
sock.c	net: avoid unnecessary sock_flag() check when enable timestamp	2018-08-06 10:42:48 -07:00
stream.c	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
sysctl_net_core.c	headers: untangle kmemleak.h from mm.h	2018-04-05 21:36:27 -07:00
timestamping.c
tso.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
utils.c	net: Remove some unneeded semicolon	2018-08-04 13:05:39 -07:00
xdp.c	net/xdp: Fix suspicious RCU usage warning	2018-08-16 21:55:21 +02:00