ath9k: Assign seq# when mac80211 requests this

Use TX control flag IEEE80211_TX_CTL_ASSIGN_SEQ as a request to update
the seq# for the frames. This will likely require some further cleanup
to get seq# correctly for Beacons vs. other frames and also potentially
for multiple BSSes. Anyway, this is better than ending up sending out
most frames with seq# 0.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath9k/beacon.c b/drivers/net/wireless/ath9k/beacon.c
index 8abcd3e8a301..a020f9a21544 100644
--- a/drivers/net/wireless/ath9k/beacon.c
+++ b/drivers/net/wireless/ath9k/beacon.c
@@ -209,6 +209,7 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
         int is_beacon_dtim = 0;
         struct ath_txq *cabq;
         struct ath_txq *mcastq;
+        struct ieee80211_tx_info *info;
         avp = sc->sc_vaps[if_id];
 
         mcastq = &avp->av_mcastq;
@@ -233,6 +234,17 @@ static struct ath_buf *ath_beacon_generate(struct ath_softc *sc, int if_id)
         bf->bf_mpdu = skb;
         if (skb == NULL)
                 return NULL;
+        info = IEEE80211_SKB_CB(skb);
+        if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ) {
+                /*
+                 * TODO: make sure the seq# gets assigned properly (vs. other
+                 * TX frames)
+                 */
+                struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+                sc->seq_no += 0x10;
+                hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
+                hdr->seq_ctrl |= cpu_to_le16(sc->seq_no);
+        }
         bf->bf_buf_addr = bf->bf_dmacontext =
                 pci_map_single(sc->pdev, skb->data,
                                skb_end_pointer(skb) - skb->head,