Throttle control interface event message bursts
Some operations like a new scan result processing can result in large
number of wpa_supplicant control interface messages being generated.
Especially with multiple control interface monitors, this could result
in hitting the output queue length maximum and event messages getting
dropped. In worst case, that could even result in hitting ten
consecutive sendto() errors which could result in an attached monitor
socket getting detached.
Avoid this type of issues by throttling monitor event transmission based
on the output queue length. If more than half of the maximum send buffer
is used, postpone sending of following event messages until the pending
output queue has dropped below the limit.
Bug: 24270573
Change-Id: I3905f3ec925ee3bdc67f7fb93991e620a2a6ee57
Signed-off-by: Jouni Malinen <j@w1.fi>
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
1 file changed
