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| author |   Soumik Das <soumik.das@stericsson.com> | 2012-05-20 15:31:13 +0530 |
|---|---|---|
| committer |   John W. Linville <linville@tuxdriver.com> | 2012-05-25 11:16:16 -0400 |
| commit | 992e68bf2eb9f3319f098560b8d4a03aa52fd7b8 (patch) | |
| tree | 4def5ed9c6845d2a9f48f7f99a429fc89be79b9b /usr | |
| parent | brcmfmac: use vmalloc to allocate mem for the firmware (diff) | |
| download | linux-dev-992e68bf2eb9f3319f098560b8d4a03aa52fd7b8.tar.xz linux-dev-992e68bf2eb9f3319f098560b8d4a03aa52fd7b8.zip | |
mac80211: Fix race in checking AP status by sending null frame
mac80211 tries to verify the existence of the current AP by
probing or sending a NULL frame in function
ieee80211_mgd_probe_ap_send. It 1st sends a null frame to the AP,
increments probe_send_count and waits for the ACK to the NULL
frame for a finite duration of time. At times, it happens that by
the time mac80211 gets to increment probe_send_count, the ACK for
the NULL frame transmitted has already been processed. This leads
to a race condition where mac80211 times out waiting for the ACK
for the NULL frame causing unnecessary disconnection with the AP.
Signed-off-by: Soumik Das <soumik.das@stericsson.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'usr')
0 files changed, 0 insertions, 0 deletions