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[v1,wl-next,0/3] wifi: wext: Namespacify wireless_nlevent_flush() calls.

Message ID 20241014205543.94787-1-kuniyu@amazon.com (mailing list archive)
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Series wifi: wext: Namespacify wireless_nlevent_flush() calls. | expand

Message

Kuniyuki Iwashima Oct. 14, 2024, 8:55 p.m. UTC 
Currently, wext's netdev notifier calls wireless_nlevent_flush()
for any event of any device and iterates all netns.

It happens even on a host without wext devices and is problematic
if the host has thousands of netns & devices as reported in the
thread below. [0]

This series will address the issue by removing the netns iteration
in wireless_nlevent_flush().

[0]: https://lore.kernel.org/netdev/CAKYWH0Ti3=4GeeuVyWKJ9LyTuRnf3Wy9GKg4Jb7tdeaT39qADA@mail.gmail.com/


Kuniyuki Iwashima (3):
  wifi: wext: Move wext_nlevents to net->gen[].
  wifi: wext: Convert wireless_nlevent_work to per-netns work.
  wifi: wext: Don't iterate all netns in wireless_nlevent_flush().

 include/net/iw_handler.h    |  4 +--
 include/net/net_namespace.h |  3 --
 net/wireless/core.c         |  2 +-
 net/wireless/wext-core.c    | 69 +++++++++++++++++++++++++------------
 4 files changed, 50 insertions(+), 28 deletions(-)