diff options
| author | Stone Piao <piaoyun@marvell.com> | 2012-06-21 07:21:10 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-06-22 21:59:49 +0400 |
| commit | 925839243dc9aa4ef25305f5afd10ed18258a4ac (patch) | |
| tree | 75c6750c9a7917b42f9d20a56a628b20087e25b9 /drivers/net/wireless/mwifiex/11n_rxreorder.c | |
| parent | 8d6fcbdb4e039544e3f60a909a0cd819f3f68ad9 (diff) | |
| download | linux-925839243dc9aa4ef25305f5afd10ed18258a4ac.tar.xz | |
mwifiex: fix 11n rx packet drop issue
Currently we check the sequence number of last packet received
against start_win. If a sequence hole is detected, start_win is
updated to next sequence number.
Since the rx sequence number is initialized to 0, a corner case
exists when BA setup happens immediately after association. As
0 is a valid sequence number, start_win gets increased to 1
incorrectly. This causes the first packet with sequence number 0
being dropped.
Initialize rx sequence number as 0xffff and skip adjusting
start_win if the sequence number remains 0xffff. The sequence
number will be updated once the first packet is received.
Cc: "3.0.y, 3.1.y, 3.2.y, 3.3.y, 3.4.y" <stable@vger.kernel.org>
Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/mwifiex/11n_rxreorder.c')
| -rw-r--r-- | drivers/net/wireless/mwifiex/11n_rxreorder.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/wireless/mwifiex/11n_rxreorder.c b/drivers/net/wireless/mwifiex/11n_rxreorder.c index 9c44088054dd..900ee129e825 100644 --- a/drivers/net/wireless/mwifiex/11n_rxreorder.c +++ b/drivers/net/wireless/mwifiex/11n_rxreorder.c @@ -256,7 +256,8 @@ mwifiex_11n_create_rx_reorder_tbl(struct mwifiex_private *priv, u8 *ta, else last_seq = priv->rx_seq[tid]; - if (last_seq >= new_node->start_win) + if (last_seq != MWIFIEX_DEF_11N_RX_SEQ_NUM && + last_seq >= new_node->start_win) new_node->start_win = last_seq + 1; new_node->win_size = win_size; @@ -596,5 +597,5 @@ void mwifiex_11n_cleanup_reorder_tbl(struct mwifiex_private *priv) spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); - memset(priv->rx_seq, 0, sizeof(priv->rx_seq)); + mwifiex_reset_11n_rx_seq_num(priv); } |