ath9k: improve reliability of MIC error detection

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For unicast the hardware sometimes reports MIC errors even though the
frame that it received actually contains a valid MIC - on some chips this
can happen frequently enough to trigger TKIP countermeasures.
Fix this issue by not reporting MIC errors for unicast frames with a
valid key, letting mac80211 validate the MIC instead.

Additionally, strip the MIC for all frames that the hardware considers
valid to avoid wasting CPU cycles re-validating it.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

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Felix Fietkau 2011-07-13 23:35:05 +08:00 • committed by John W. Linville

parent 933d594313

commit 66760eac00

1 changed files with 32 additions and 21 deletions

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53

drivers/net/wireless/ath/ath9k/recv.c

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