carl9170 firmware: add workaround for carl vs. mac BAR problem

[carl9170fw.git] / carlfw / src / wlan.c

diff --git a/carlfw/src/wlan.c b/carlfw/src/wlan.c
index e581fa8ddea34db0095a4d9d2516cf5eba89056e..b8d4ec436fca3f54ed5708c80407c4b9fc75e4cb 100644 (file)
--- a/carlfw/src/wlan.c
+++ b/carlfw/src/wlan.c
@@ -457,6 +457,18 @@ static bool wlan_tx_status(struct dma_queue *queue,
                fw.wlan.cab_queue_len[super->s.vif_id]--;
 #endif /* CONFIG_CARL9170FW_CAB_QUEUE */
 
+       if (unlikely(ieee80211_is_back_req(super->f.data.i3e.frame_control))) {
+               /*
+                * As explained above, the hardware seems to be
+                * incapable of matching BA to BARs. This is a
+                * problem especially with mac80211, because it
+                * does resent failed BARs which of course cause
+                * some mayhem in the receiver buffer at the HT
+                * peer on the other end.
+                */
+               success = true;
+       }
+
        wlan_tx_complete(super, success);
 
        /* recycle freed descriptors */