1 files changed, 88 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.23/0003-mwifiex-fix-11n-rx-packet-drop-issue.patch b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.23/0003-mwifiex-fix-11n-rx-packet-drop-issue.patch
new file mode 100644
index 00000000..eef5de77
--- /dev/null
+++ b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.23/0003-mwifiex-fix-11n-rx-packet-drop-issue.patch
@@ -0,0 +1,88 @@
+From 8c92af27a522bcec5dc2ced7b49b8f3f57492b21 Mon Sep 17 00:00:00 2001
+From: Stone Piao <piaoyun@marvell.com>
+Date: Wed, 20 Jun 2012 20:21:10 -0700
+Subject: [PATCH 03/49] mwifiex: fix 11n rx packet drop issue
+
+commit 925839243dc9aa4ef25305f5afd10ed18258a4ac upstream.
+
+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.
+
+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>
+Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
+---
+ drivers/net/wireless/mwifiex/11n_rxreorder.c |    5 +++--
+ drivers/net/wireless/mwifiex/11n_rxreorder.h |    7 +++++++
+ drivers/net/wireless/mwifiex/wmm.c           |    2 ++
+ 3 files changed, 12 insertions(+), 2 deletions(-)
+
+diff --git a/drivers/net/wireless/mwifiex/11n_rxreorder.c b/drivers/net/wireless/mwifiex/11n_rxreorder.c
+index 7aa9aa0..39fd4d5 100644
+--- a/drivers/net/wireless/mwifiex/11n_rxreorder.c
++++ b/drivers/net/wireless/mwifiex/11n_rxreorder.c
+@@ -267,7 +267,8 @@ 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;
+@@ -611,5 +612,5 @@ 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);
+ }
+diff --git a/drivers/net/wireless/mwifiex/11n_rxreorder.h b/drivers/net/wireless/mwifiex/11n_rxreorder.h
+index 033c8ad..7128baa 100644
+--- a/drivers/net/wireless/mwifiex/11n_rxreorder.h
++++ b/drivers/net/wireless/mwifiex/11n_rxreorder.h
+@@ -37,6 +37,13 @@
+ 
+ #define ADDBA_RSP_STATUS_ACCEPT 0
+ 
++#define MWIFIEX_DEF_11N_RX_SEQ_NUM     0xffff
++
++static inline void mwifiex_reset_11n_rx_seq_num(struct mwifiex_private *priv)
++{
++       memset(priv->rx_seq, 0xff, sizeof(priv->rx_seq));
++}
++
+ int mwifiex_11n_rx_reorder_pkt(struct mwifiex_private *,
+                               u16 seqNum,
+                               u16 tid, u8 *ta,
+diff --git a/drivers/net/wireless/mwifiex/wmm.c b/drivers/net/wireless/mwifiex/wmm.c
+index 6c239c3..b94a349 100644
+--- a/drivers/net/wireless/mwifiex/wmm.c
++++ b/drivers/net/wireless/mwifiex/wmm.c
+@@ -406,6 +406,8 @@ mwifiex_wmm_init(struct mwifiex_adapter *adapter)
+                priv->add_ba_param.tx_win_size = MWIFIEX_AMPDU_DEF_TXWINSIZE;
+                priv->add_ba_param.rx_win_size = MWIFIEX_AMPDU_DEF_RXWINSIZE;
+ 
++               mwifiex_reset_11n_rx_seq_num(priv);
++
+                atomic_set(&priv->wmm.tx_pkts_queued, 0);
+                atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID);
+        }
+-- 
+1.7.10
+