ath9k: Fix incorrect sequence numbering for unaggregated QoS Frame.

This patch fixes an issue with the sequence numbers of unaggregated
QoS frames, because of which the frames are handled in a different order
at the AP and resulted in MLME REPLAYFAILURE.

Signed-off-by: Senthil Balasubramanian <senthilkumar@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 17 insertions, 21 deletions

diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c
index 3bfc3b90f256..1ea9428c0cd2 100644
--- a/drivers/net/wireless/ath9k/xmit.c
+++ b/drivers/net/wireless/ath9k/xmit.c
@@ -264,25 +264,22 @@ static void assign_aggr_tid_seqno(struct sk_buff *skb,
         }
 
         /* Get seqno */
-
-        if (ieee80211_is_data(fc) && !is_pae(skb)) {
-                /* For HT capable stations, we save tidno for later use.
-                 * We also override seqno set by upper layer with the one
-                 * in tx aggregation state.
-                 *
-                 * If fragmentation is on, the sequence number is
-                 * not overridden, since it has been
-                 * incremented by the fragmentation routine.
-                 *
-                 * FIXME: check if the fragmentation threshold exceeds
-                 * IEEE80211 max.
-                 */
-                tid = ATH_AN_2_TID(an, bf->bf_tidno);
-                hdr->seq_ctrl = cpu_to_le16(tid->seq_next <<
-                                            IEEE80211_SEQ_SEQ_SHIFT);
-                bf->bf_seqno = tid->seq_next;
-                INCR(tid->seq_next, IEEE80211_SEQ_MAX);
-        }
+        /* For HT capable stations, we save tidno for later use.
+         * We also override seqno set by upper layer with the one
+         * in tx aggregation state.
+         *
+         * If fragmentation is on, the sequence number is
+         * not overridden, since it has been
+         * incremented by the fragmentation routine.
+         *
+         * FIXME: check if the fragmentation threshold exceeds
+         * IEEE80211 max.
+         */
+        tid = ATH_AN_2_TID(an, bf->bf_tidno);
+        hdr->seq_ctrl = cpu_to_le16(tid->seq_next <<
+                        IEEE80211_SEQ_SEQ_SHIFT);
+        bf->bf_seqno = tid->seq_next;
+        INCR(tid->seq_next, IEEE80211_SEQ_MAX);
 }
 
 static int setup_tx_flags(struct ath_softc *sc, struct sk_buff *skb,
@@ -1718,11 +1715,10 @@ static int ath_tx_setup_buffer(struct ath_softc *sc, struct ath_buf *bf,
 
         /* Assign seqno, tidno */
 
-        if (bf_isht(bf) && (sc->sc_flags & SC_OP_TXAGGR))
+        if (ieee80211_is_data_qos(fc) && (sc->sc_flags & SC_OP_TXAGGR))
                 assign_aggr_tid_seqno(skb, bf);
 
         /* DMA setup */
-
         bf->bf_mpdu = skb;
 
         bf->bf_dmacontext = pci_map_single(sc->pdev, skb->data,