ath9k: channel context based transmission
Force queueing of all frames that belong to a virtual interface on
a different channel context, to ensure that they are sent on the
correct channel.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Rajkumar Manoharan <rmanohar@qti.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 5aaed39..7972e1e 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -2185,13 +2185,18 @@
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_sta *sta = txctl->sta;
struct ieee80211_vif *vif = info->control.vif;
+ struct ath_vif *avp = NULL;
struct ath_softc *sc = hw->priv;
struct ath_txq *txq = txctl->txq;
struct ath_atx_tid *tid = NULL;
struct ath_buf *bf;
+ bool queue;
int q;
int ret;
+ if (vif)
+ avp = (void *)vif->drv_priv;
+
ret = ath_tx_prepare(hw, skb, txctl);
if (ret)
return ret;
@@ -2212,15 +2217,28 @@
txq->stopped = true;
}
- if (txctl->an && ieee80211_is_data_present(hdr->frame_control))
+ queue = ieee80211_is_data_present(hdr->frame_control);
+
+ /* Force queueing of all frames that belong to a virtual interface on
+ * a different channel context, to ensure that they are sent on the
+ * correct channel.
+ */
+ if (((avp && avp->chanctx != sc->cur_chan) ||
+ sc->cur_chan->stopped) && !txctl->force_channel) {
+ if (!txctl->an)
+ txctl->an = &avp->mcast_node;
+ info->flags &= ~IEEE80211_TX_CTL_PS_RESPONSE;
+ queue = true;
+ }
+
+ if (txctl->an && queue)
tid = ath_get_skb_tid(sc, txctl->an, skb);
if (info->flags & IEEE80211_TX_CTL_PS_RESPONSE) {
ath_txq_unlock(sc, txq);
txq = sc->tx.uapsdq;
ath_txq_lock(sc, txq);
- } else if (txctl->an &&
- ieee80211_is_data_present(hdr->frame_control)) {
+ } else if (txctl->an && queue) {
WARN_ON(tid->ac->txq != txctl->txq);
if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)