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d8afe2f8a9
linux/net/core
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Breno Leitao d8afe2f8a9 netpoll: Remove 4s sleep during carrier detection 
This patch removes the msleep(4s) during netpoll_setup() if the carrier
appears instantly.

Here are some scenarios where this workaround is counter-productive in
modern ages:

Servers which have BMC communicating over NC-SI via the same NIC as gets
used for netconsole. BMC will keep the PHY up, hence the carrier
appearing instantly.

The link is fibre, SERDES getting sync could happen within 0.1Hz, and
the carrier also appears instantly.

Other than that, if a driver is reporting instant carrier and then
losing it, this is probably a driver bug.

Reported-by: Michael van der Westhuizen <rmikey@meta.com>
Signed-off-by: Breno Leitao <leitao@debian.org>
Link: https://lore.kernel.org/r/20230125185230.3574681-1-leitao@debian.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-01-27 23:24:07 -08:00
..
bpf_sk_storage.c bpf: Fix a compilation failure with clang lto build 2022-11-30 17:13:25 -08:00
datagram.c tcp: TX zerocopy should not sense pfmemalloc status 2022-09-02 12:29:02 +01:00
dev_addr_lists_test.c kunit: Use KUNIT_EXPECT_MEMEQ macro 2022-10-27 02:40:14 -06:00
dev_addr_lists.c net: extract a few internals from netdevice.h 2022-04-07 20:32:09 -07:00
dev_ioctl.c net: dev: Convert sa_data to flexible array in struct sockaddr 2022-10-25 11:44:20 -07:00
dev.c net: avoid irqsave in skb_defer_free_flush 2023-01-23 22:08:06 -08:00
dev.h net: add new helper unregister_netdevice_many_notify 2022-10-31 18:10:21 -07:00
drop_monitor.c genetlink: introduce split op representation 2022-11-07 12:30:16 +00:00
dst_cache.c wireguard: device: reset peer src endpoint when netns exits 2021-11-29 19:50:45 -08:00
dst.c ipv6: remove max_size check inline with ipv4 2023-01-13 20:59:14 -08:00
failover.c net: failover: use IFF_NO_ADDRCONF flag to prevent ipv6 addrconf 2022-12-12 15:18:25 -08:00
fib_notifier.c
fib_rules.c fib: expand fib_rule_policy 2021-12-16 07:18:35 -08:00
filter.c xdp: document xdp_do_flush() before napi_complete_done() 2023-01-18 14:33:34 +00:00
flow_dissector.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-11-29 13:04:52 -08:00
flow_offload.c net: flow_offload: add support for ARP frame matching 2022-11-14 11:24:16 +00:00
gen_estimator.c treewide: Convert del_timer*() to timer_shutdown*() 2022-12-25 13:38:09 -08:00
gen_stats.c net: Remove the obsolte u64_stats_fetch_*_irq() users (net). 2022-10-28 20:13:54 -07:00
gro_cells.c net: drop the weight argument from netif_napi_add 2022-09-28 18:57:14 -07:00
gro.c gro: take care of DODGY packets 2023-01-09 07:37:07 +00:00
hwbm.c
link_watch.c net: linkwatch: only report IF_OPER_LOWERLAYERDOWN if iflink is actually down 2022-11-16 09:45:00 +00:00
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 xfrm: lwtunnel: squelch kernel warning in case XFRM encap type is not available 2022-10-12 10:45:51 +02:00
Makefile devlink: move code to a dedicated directory 2023-01-05 22:12:00 -08:00
neighbour.c Random number generator updates for Linux 6.2-rc1. 2022-12-12 16:22:22 -08:00
net_namespace.c net: fix UaF in netns ops registration error path 2023-01-20 18:51:18 -08:00
net-procfs.c net: extract a few internals from netdevice.h 2022-04-07 20:32:09 -07:00
net-sysfs.c Driver Core changes for 6.2-rc1 2022-12-16 03:54:54 -08:00
net-sysfs.h
net-traces.c net/sock: Introduce trace_sk_data_ready() 2023-01-23 11:26:50 +00:00
netclassid_cgroup.c core: Variable type completion 2022-08-31 09:40:34 +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 netpoll: Remove 4s sleep during carrier detection 2023-01-27 23:24:07 -08:00
netprio_cgroup.c bpf, cgroups: Fix cgroup v2 fallback on v1/v2 mixed mode 2021-09-13 16:35:58 -07:00
of_net.c of: net: export of_get_mac_address_nvmem() 2022-11-29 10:45:53 +01:00
page_pool.c - The usual batches of cleanups from Baoquan He, Muchun Song, Miaohe 2022-08-05 16:32:45 -07:00
pktgen.c treewide: use get_random_u32_inclusive() when possible 2022-11-18 02:18:02 +01:00
ptp_classifier.c ptp: Add generic PTP is_sync() function 2022-03-07 11:31:34 +00:00
request_sock.c
rtnetlink.c net: expose devlink port over rtnetlink 2022-11-03 20:48:37 -07:00
scm.c memcg: enable accounting for scm_fp_list objects 2021-07-20 06:00:38 -07:00
secure_seq.c tcp: Fix data-races around sysctl knobs related to SYN option. 2022-07-20 10:14:49 +01:00
selftests.c net: core: constify mac addrs in selftests 2021-10-24 13:59:44 +01:00
skbuff.c net: skbuff: drop the linux/textsearch.h include 2023-01-27 11:19:46 +00:00
skmsg.c net/sock: Introduce trace_sk_data_ready() 2023-01-23 11:26:50 +00:00
sock_destructor.h skb_expand_head() adjust skb->truesize incorrectly 2021-10-22 12:35:51 -07:00
sock_diag.c net: fix __sock_gen_cookie() 2022-11-21 20:36:30 -08:00
sock_map.c bpf, sockmap: fix race in sock_map_free() 2022-12-04 18:53:51 -08:00
sock_reuseport.c soreuseport: Fix socket selection for SO_INCOMING_CPU. 2022-10-25 11:35:16 +02:00
sock.c net/sock: Introduce trace_sk_data_ready() 2023-01-23 11:26:50 +00:00
stream.c net: stream: purge sk_error_queue in sk_stream_kill_queues() 2022-12-19 12:33:16 +00:00
sysctl_net_core.c sysctl: expose all net/core sysctls inside netns 2023-01-06 12:41:52 +00:00
timestamping.c
tso.c net: tso: inline tso_count_descs() 2022-12-12 15:04:39 -08:00
utils.c net: core: inet[46]_pton strlen len types 2022-11-01 21:14:39 -07:00
xdp.c xdp: improve page_pool xdp_return performance 2022-09-26 11:28:19 -07:00