linux/net/core
Sebastian Andrzej Siewior 8380c81d5c net: Treat __napi_schedule_irqoff() as __napi_schedule() on PREEMPT_RT
__napi_schedule_irqoff() is an optimized version of __napi_schedule()
which can be used where it is known that interrupts are disabled,
e.g. in interrupt-handlers, spin_lock_irq() sections or hrtimer
callbacks.

On PREEMPT_RT enabled kernels this assumptions is not true. Force-
threaded interrupt handlers and spinlocks are not disabling interrupts
and the NAPI hrtimer callback is forced into softirq context which runs
with interrupts enabled as well.

Chasing all usage sites of __napi_schedule_irqoff() is a whack-a-mole
game so make __napi_schedule_irqoff() invoke __napi_schedule() for
PREEMPT_RT kernels.

The callers of ____napi_schedule() in the networking core have been
audited and are correct on PREEMPT_RT kernels as well.

Reported-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-05-13 13:11:19 -07:00
..
bpf_sk_storage.c bpf: Prevent deadlock from recursive bpf_task_storage_[get|delete] 2021-02-26 11:51:48 -08:00
datagram.c udp: fix skb_copy_and_csum_datagram with odd segment sizes 2021-02-04 18:56:56 -08:00
datagram.h
dev_addr_lists.c net: core: Correct function name dev_uc_flush() in the kerneldoc 2021-03-28 17:56:56 -07:00
dev_ioctl.c net: fix dev_ifsioc_locked() race condition 2021-02-11 18:14:19 -08:00
dev.c net: Treat __napi_schedule_irqoff() as __napi_schedule() on PREEMPT_RT 2021-05-13 13:11:19 -07:00
devlink.c devlink: Extend SF port attributes to have external attribute 2021-04-24 00:58:53 -07:00
drop_monitor.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-03-25 15:31:22 -07:00
dst_cache.c
dst.c net, bpf: Fix ip6ip6 crash with collect_md populated skbs 2021-03-10 12:24:18 -08:00
failover.c
fib_notifier.c net: fib_notifier: propagate extack down to the notifier block callback 2019-10-04 11:10:56 -07:00
fib_rules.c treewide: rename nla_strlcpy to nla_strscpy. 2020-11-16 08:08:54 -08:00
filter.c bpf: selftests: Add kfunc_call test 2021-03-26 20:41:52 -07:00
flow_dissector.c flow_dissector: Fix out-of-bounds warning in __skb_flow_bpf_to_target() 2021-04-16 17:02:27 -07:00
flow_offload.c net: flow_offload: Fix memory leak for indirect flow block 2020-12-09 16:08:33 -08:00
gen_estimator.c net_sched: gen_estimator: support large ewma log 2021-01-15 18:11:06 -08:00
gen_stats.c docs: networking: convert gen_stats.txt to ReST 2020-04-28 14:39:46 -07:00
gro_cells.c gro_cells: reduce number of synchronize_net() calls 2020-11-25 11:28:12 -08:00
hwbm.c
link_watch.c net: Add IF_OPER_TESTING 2020-04-20 12:43:24 -07:00
lwt_bpf.c lwt_bpf: Replace preempt_disable() with migrate_disable() 2020-12-07 11:53:40 -08:00
lwtunnel.c net: ipv6: add rpl sr tunnel 2020-03-29 22:30:57 -07:00
Makefile net: selftest: fix build issue if INET is disabled 2021-04-28 14:06:45 -07:00
neighbour.c neighbour: Remove redundant initialization of 'bucket' 2021-05-10 14:25:13 -07:00
net_namespace.c net: initialize net->net_cookie at netns setup 2021-02-11 14:10:07 -08:00
net-procfs.c net: move the ptype_all and ptype_base declarations to include/linux/netdevice.h 2021-03-22 13:14:45 -07:00
net-sysfs.c net-sysfs: remove possible sleep from an RCU read-side critical section 2021-03-22 13:28:13 -07:00
net-sysfs.h net-sysfs: add netdev_change_owner() 2020-02-26 20:07:25 -08:00
net-traces.c
netclassid_cgroup.c net: Remove the err argument from sock_from_file 2020-12-04 22:32:40 +01:00
netevent.c net: core: Correct function name netevent_unregister_notifier() in the kerneldoc 2021-03-28 17:56:56 -07:00
netpoll.c Revert "net: Have netpoll bring-up DSA management interface" 2021-02-06 14:42:57 -08:00
netprio_cgroup.c net: Remove the err argument from sock_from_file 2020-12-04 22:32:40 +01:00
page_pool.c net: page_pool: use alloc_pages_bulk in refill code path 2021-04-30 11:20:43 -07:00
pktgen.c pktgen: fix misuse of BUG_ON() in pktgen_thread_worker() 2021-01-27 16:46:37 -08:00
ptp_classifier.c ptp: Add generic ptp v2 header parsing function 2020-08-19 16:07:49 -07:00
request_sock.c tcp: add rcu protection around tp->fastopen_rsk 2019-10-13 10:13:08 -07:00
rtnetlink.c rtnetlink: avoid RCU read lock when holding RTNL 2021-05-10 14:33:10 -07:00
scm.c scm: fix a typo in put_cmsg() 2021-04-16 11:41:07 -07:00
secure_seq.c crypto: lib/sha1 - remove unnecessary includes of linux/cryptohash.h 2020-05-08 15:32:17 +10:00
selftests.c net: add generic selftest support 2021-04-20 16:08:02 -07:00
skbuff.c Networking changes for 5.13. 2021-04-29 11:57:23 -07:00
skmsg.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2021-04-09 20:48:35 -07:00
sock_diag.c bpf, net: Rework cookie generator as per-cpu one 2020-09-30 11:50:35 -07:00
sock_map.c sock_map: Fix a potential use-after-free in sock_map_close() 2021-04-12 17:35:26 +02:00
sock_reuseport.c udp: Prevent reuseport_select_sock from reading uninitialized socks 2021-01-08 19:15:40 -08:00
sock.c net: sock: remove the unnecessary check in proto_register 2021-04-23 13:10:03 -07:00
stream.c
sysctl_net_core.c net: change netdev_unregister_timeout_secs min value to 1 2021-03-25 17:24:06 -07:00
timestamping.c net: Introduce a new MII time stamping interface. 2019-12-25 19:51:33 -08:00
tso.c net: tso: add UDP segmentation support 2020-06-18 20:46:23 -07:00
utils.c net: Fix skb->csum update in inet_proto_csum_replace16(). 2020-01-24 20:54:30 +01:00
xdp.c xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory model 2021-03-31 15:15:23 -07:00