Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next

John Linville says:

====================
Several drivers see updates: mwifiex, ath9k, iwlwifi, brcmsmac,
wlcore/wl12xx/wl18xx, and a handful of others.  The bcma bus got a
lot of attention from Hauke Mehrtens.  The cfg80211 component gets
a flurry of patches for multi-channel support, and the mac80211
component gets the first few VHT (11ac) and 60GHz (11ad) patches.
This also includes the removal of the iwmc3200 drivers, since the
hardware never became available to normal people.

Additionally, the NFC subsystem gets a series of updates.  According to
Samuel, "Here are the interesting bits:

- A better error management for the HCI stack.
- An LLCP "late" binding implementation for a better NFC SAP usage. SAPs are
  now reserved only when there's a client for it.
- Support for Sony RC-S360 (a.k.a. PaSoRi) pn533 based dongle. We can read and
  write NFC tags and also establish a p2p link with this dongle now.
- A few LLCP fixes."

Finally, this includes another pull of the fixes from the wireless
tree in order to resolve some merge issues.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 49 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/carl9170/rx.c b/drivers/net/wireless/ath/carl9170/rx.c
index 7a8e90eaad83..6f6a34155667 100644
--- a/drivers/net/wireless/ath/carl9170/rx.c
+++ b/drivers/net/wireless/ath/carl9170/rx.c
@@ -576,6 +576,53 @@ static void carl9170_ps_beacon(struct ar9170 *ar, void *data, unsigned int len)
 	}
 }
 
+static void carl9170_ba_check(struct ar9170 *ar, void *data, unsigned int len)
+{
+	struct ieee80211_bar *bar = (void *) data;
+	struct carl9170_bar_list_entry *entry;
+	unsigned int queue;
+
+	if (likely(!ieee80211_is_back(bar->frame_control)))
+		return;
+
+	if (len <= sizeof(*bar) + FCS_LEN)
+		return;
+
+	queue = TID_TO_WME_AC(((le16_to_cpu(bar->control) &
+		IEEE80211_BAR_CTRL_TID_INFO_MASK) >>
+		IEEE80211_BAR_CTRL_TID_INFO_SHIFT) & 7);
+
+	rcu_read_lock();
+	list_for_each_entry_rcu(entry, &ar->bar_list[queue], list) {
+		struct sk_buff *entry_skb = entry->skb;
+		struct _carl9170_tx_superframe *super = (void *)entry_skb->data;
+		struct ieee80211_bar *entry_bar = (void *)super->frame_data;
+
+#define TID_CHECK(a, b) (						\
+	((a) & cpu_to_le16(IEEE80211_BAR_CTRL_TID_INFO_MASK)) ==	\
+	((b) & cpu_to_le16(IEEE80211_BAR_CTRL_TID_INFO_MASK)))		\
+
+		if (bar->start_seq_num == entry_bar->start_seq_num &&
+		    TID_CHECK(bar->control, entry_bar->control) &&
+		    compare_ether_addr(bar->ra, entry_bar->ta) == 0 &&
+		    compare_ether_addr(bar->ta, entry_bar->ra) == 0) {
+			struct ieee80211_tx_info *tx_info;
+
+			tx_info = IEEE80211_SKB_CB(entry_skb);
+			tx_info->flags |= IEEE80211_TX_STAT_ACK;
+
+			spin_lock_bh(&ar->bar_list_lock[queue]);
+			list_del_rcu(&entry->list);
+			spin_unlock_bh(&ar->bar_list_lock[queue]);
+			kfree_rcu(entry, head);
+			break;
+		}
+	}
+	rcu_read_unlock();
+
+#undef TID_CHECK
+}
+
 static bool carl9170_ampdu_check(struct ar9170 *ar, u8 *buf, u8 ms)
 {
 	__le16 fc;
@@ -738,6 +785,8 @@ static void carl9170_handle_mpdu(struct ar9170 *ar, u8 *buf, int len)
 
 	carl9170_ps_beacon(ar, buf, mpdu_len);
 
+	carl9170_ba_check(ar, buf, mpdu_len);
+
 	skb = carl9170_rx_copy_data(buf, mpdu_len);
 	if (!skb)
 		goto drop;