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| author | Johannes Berg <johannes@sipsolutions.net> | 2008-02-21 14:09:30 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2008-02-29 15:41:34 -0500 |
| commit | 43ba7e958f2ca05e4e9171a15402288419289d71 (patch) | |
| tree | 15b7a04a7db402dd286f83cc56c21b336189da09 /net/mac80211/debugfs_sta.c | |
| parent | d46e144b65bf053b25d134ec9f52a38e63e04bb4 (diff) | |
| download | kernel_samsung_smdk4412-43ba7e958f2ca05e4e9171a15402288419289d71.zip kernel_samsung_smdk4412-43ba7e958f2ca05e4e9171a15402288419289d71.tar.gz kernel_samsung_smdk4412-43ba7e958f2ca05e4e9171a15402288419289d71.tar.bz2 | |
mac80211: atomically check whether STA exists already
When a STA structure is added, it is often checked whether it
already exists before adding it. This, however, isn't done
atomically so there is a race condition that could lead to two
STA structures being added with the same MAC address. This
patch changes sta_info_add() to return an ERR_PTR in case
of failure and adds the failure mode -EEXIST when the STA
already exists.
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Luis Carlos Cobo <luisca@cozybit.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211/debugfs_sta.c')
0 files changed, 0 insertions, 0 deletions