diff options
| author | Paul Stewart <pstew@chromium.org> | 2014-02-25 16:31:37 -0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2014-02-28 14:33:23 -0500 |
| commit | 8acbea614a75bc2221a84f222dc32be0877861ce (patch) | |
| tree | 8a1034aa9961cbe4209149779026030b4fe2b6c5 /drivers/net/wireless/mwifiex/11n_rxreorder.h | |
| parent | b6a8cf2cd8f1d17c850db0f591e3d349d417b40a (diff) | |
mwifiex: Track BA sequence number reset
Some stations reset the sequence number for traffic-ids (TIDs)
as they initiate a block-ACK session. In order to detect such
behavior, mwifiex must note the starting sequence number given
during the ADDBA request. If the first received sequence number
after the ADDBA falls outside the receive window for this TID but
after the the ADDBA starting sequence number, we can assume that
this AP has reset its sequence number during the ADDBA. In this
case we must adjust the input window backward to incorporate this
received sequence number instead of ignoring it. Otherwise, we
could fail to successfully retrieve an arbitrarily large number
of downstream frames at the beginning of the block-ACK session.
Signed-off-by: Paul Stewart <pstew@chromium.org>
Acked-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/mwifiex/11n_rxreorder.h')
| -rw-r--r-- | drivers/net/wireless/mwifiex/11n_rxreorder.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/wireless/mwifiex/11n_rxreorder.h b/drivers/net/wireless/mwifiex/11n_rxreorder.h index 4064041ac85..0fc76e4a60f 100644 --- a/drivers/net/wireless/mwifiex/11n_rxreorder.h +++ b/drivers/net/wireless/mwifiex/11n_rxreorder.h @@ -42,7 +42,8 @@ #define BA_SETUP_PACKET_OFFSET 16 enum mwifiex_rxreor_flags { - RXREOR_FORCE_NO_DROP = 1<<0, + RXREOR_FORCE_NO_DROP = 1<<0, + RXREOR_INIT_WINDOW_SHIFT = 1<<1, }; static inline void mwifiex_reset_11n_rx_seq_num(struct mwifiex_private *priv) |