Daniel Borkmann ed6cd6a178 net, neigh: Set lower cap for neigh_managed_work rearming ...

Yuwei reported that plain reuse of DELAY_PROBE_TIME to rearm work queue
in neigh_managed_work is problematic if user explicitly configures the
DELAY_PROBE_TIME to 0 for a neighbor table. Such misconfig can then hog
CPU to 100% processing the system work queue. Instead, set lower interval
bound to HZ which is totally sufficient. Yuwei is additionally looking
into making the interval separately configurable from DELAY_PROBE_TIME.

Reported-by: Yuwei Wang <wangyuweihx@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/netdev/797c3c53-ce1b-9f60-e253-cda615788f4a@iogearbox.net
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/r/3b8c5aa906c52c3a8c995d1b2e8ccf650ea7c716.1653432794.git.daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

2022-05-25 22:00:48 -07:00

..

bpf_sk_storage.c

bpf: Compute map_btf_id during build time

2022-04-26 11:35:21 -07:00

datagram.c

net: inline skb_zerocopy_iter_dgram

2022-04-30 12:58:44 +01:00

dev_addr_lists_test.c

…

dev_addr_lists.c

net: extract a few internals from netdevice.h

2022-04-07 20:32:09 -07:00

dev_ioctl.c

net: extract a few internals from netdevice.h

2022-04-07 20:32:09 -07:00

dev.c

Merge tag 'net-next-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2022-05-25 12:22:58 -07:00

dev.h

net: add skb_defer_max sysctl

2022-05-16 11:33:59 +01:00

devlink.c

Revert "Merge branch 'mlxsw-line-card-model'"

2022-05-05 15:47:23 -07:00

drop_monitor.c

net: dm: check the boundary of skb drop reasons

2022-05-16 10:47:43 +01:00

dst_cache.c

…

dst.c

…

failover.c

…

fib_notifier.c

…

fib_rules.c

…

filter.c

bpf: Add bpf_skc_to_mptcp_sock_proto

2022-05-20 15:29:00 -07:00

flow_dissector.c

flow_dissector: Add number of vlan tags dissector

2022-04-20 11:09:13 +01:00

flow_offload.c

…

gen_estimator.c

…

gen_stats.c

…

gro_cells.c

net: add per-cpu storage and net->core_stats

2022-03-11 23:17:24 -08:00

gro.c

net: allow gro_max_size to exceed 65536

2022-05-16 10:18:56 +01:00

hwbm.c

…

link_watch.c

net: extract a few internals from netdevice.h

2022-04-07 20:32:09 -07:00

lwt_bpf.c

bpf, lwt: Fix crash when using bpf_skb_set_tunnel_key() from bpf_xmit lwt hook

2022-04-22 17:45:25 +02:00

lwtunnel.c

…

Makefile

…

neighbour.c

net, neigh: Set lower cap for neigh_managed_work rearming

2022-05-25 22:00:48 -07:00

net_namespace.c

…

net-procfs.c

net: extract a few internals from netdevice.h

2022-04-07 20:32:09 -07:00

net-sysfs.c

net: wrap the wireless pointers in struct net_device in an ifdef

2022-05-22 21:51:54 +01:00

net-sysfs.h

…

net-traces.c

…

netclassid_cgroup.c

…

netevent.c

…

netpoll.c

…

netprio_cgroup.c

…

of_net.c

…

page_pool.c

net: page_pool: add page allocation stats for two fast page allocate path

2022-05-13 11:28:55 +01:00

pktgen.c

…

ptp_classifier.c

ptp: Add generic PTP is_sync() function

2022-03-07 11:31:34 +00:00

request_sock.c

…

rtnetlink.c

net: allow gro_max_size to exceed 65536

2022-05-16 10:18:56 +01:00

scm.c

…

secure_seq.c

tcp: resalt the secret every 10 seconds

2022-05-04 19:22:21 -07:00

selftests.c

…

skbuff.c

net: avoid strange behavior with skb_defer_max == 1

2022-05-20 17:05:36 -07:00

skmsg.c

bpf, sockmap: Call skb_linearize only when required in sk_psock_skb_ingress_enqueue

2022-04-28 23:40:01 +02:00

sock_destructor.h

…

sock_diag.c

…

sock_map.c

bpf: Compute map_btf_id during build time

2022-04-26 11:35:21 -07:00

sock_reuseport.c

…

sock.c

net: core: add READ_ONCE/WRITE_ONCE annotations for sk->sk_bound_dev_if

2022-05-16 10:31:06 +01:00

stream.c

…

sysctl_net_core.c

Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2022-05-23 16:07:14 -07:00

timestamping.c

…

tso.c

…

utils.c

…

xdp.c

Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next

2022-03-22 11:18:49 -07:00