mac80211: backport latest version from trunk (as of r28137)

[openwrt-10.03/.git] / package / mac80211 / patches / 543-ath9k_move_seqno_alloc.patch

diff --git a/package/mac80211/patches/543-ath9k_move_seqno_alloc.patch b/package/mac80211/patches/543-ath9k_move_seqno_alloc.patch
new file mode 100644 (file)
index 0000000..8de5fd2
--- /dev/null
+++ b/package/mac80211/patches/543-ath9k_move_seqno_alloc.patch
@@ -0,0 +1,119 @@
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -1717,17 +1717,19 @@ static void ath_buf_set_rate(struct ath_
+ 
+ }
+ 
+-static struct ath_buf *ath_tx_setup_buffer(struct ieee80211_hw *hw,
++static struct ath_buf *ath_tx_setup_buffer(struct ath_softc *sc,
+                                          struct ath_txq *txq,
++                                         struct ath_atx_tid *tid,
+                                          struct sk_buff *skb)
+ {
+-      struct ath_softc *sc = hw->priv;
+       struct ath_hw *ah = sc->sc_ah;
+       struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+       struct ath_frame_info *fi = get_frame_info(skb);
++      struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+       struct ath_buf *bf;
+       struct ath_desc *ds;
+       int frm_type;
++      u16 seqno;
+ 
+       bf = ath_tx_get_buffer(sc);
+       if (!bf) {
+@@ -1737,6 +1739,13 @@ static struct ath_buf *ath_tx_setup_buff
+ 
+       ATH_TXBUF_RESET(bf);
+ 
++      if (tid) {
++              seqno = tid->seq_next;
++              hdr->seq_ctrl = cpu_to_le16(tid->seq_next << IEEE80211_SEQ_SEQ_SHIFT);
++              INCR(tid->seq_next, IEEE80211_SEQ_MAX);
++              bf->bf_state.seqno = seqno;
++      }
++
+       bf->bf_flags = setup_tx_flags(skb);
+       bf->bf_mpdu = skb;
+ 
+@@ -1773,15 +1782,15 @@ static struct ath_buf *ath_tx_setup_buff
+ }
+ 
+ /* FIXME: tx power */
+-static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
++static int ath_tx_start_dma(struct ath_softc *sc, struct sk_buff *skb,
+                            struct ath_tx_control *txctl)
+ {
+-      struct sk_buff *skb = bf->bf_mpdu;
+       struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+       struct list_head bf_head;
+       struct ath_atx_tid *tid = NULL;
+-      u16 seqno;
++      struct ath_buf *bf;
++      int ret = 0;
+       u8 tidno;
+ 
+       spin_lock_bh(&txctl->txq->axq_lock);
+@@ -1791,15 +1800,15 @@ static void ath_tx_start_dma(struct ath_
+                       IEEE80211_QOS_CTL_TID_MASK;
+               tid = ATH_AN_2_TID(txctl->an, tidno);
+ 
+-              seqno = tid->seq_next;
+-              hdr->seq_ctrl = cpu_to_le16(tid->seq_next << IEEE80211_SEQ_SEQ_SHIFT);
+-              INCR(tid->seq_next, IEEE80211_SEQ_MAX);
+-
+-              bf->bf_state.seqno = seqno;
+-
+               WARN_ON(tid->ac->txq != txctl->txq);
+       }
+ 
++      bf = ath_tx_setup_buffer(sc, txctl->txq, tid, skb);
++      if (unlikely(!bf)) {
++              ret = -ENOMEM;
++              goto out;
++      }
++
+       if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && tid) {
+               /*
+                * Try aggregation if it's a unicast data frame
+@@ -1825,7 +1834,9 @@ static void ath_tx_start_dma(struct ath_
+               ath_tx_send_normal(sc, txctl->txq, tid, &bf_head);
+       }
+ 
++out:
+       spin_unlock_bh(&txctl->txq->axq_lock);
++      return ret;
+ }
+ 
+ /* Upon failure caller should free skb */
+@@ -1838,7 +1849,6 @@ int ath_tx_start(struct ieee80211_hw *hw
+       struct ieee80211_vif *vif = info->control.vif;
+       struct ath_softc *sc = hw->priv;
+       struct ath_txq *txq = txctl->txq;
+-      struct ath_buf *bf;
+       int padpos, padsize;
+       int frmlen = skb->len + FCS_LEN;
+       int q;
+@@ -1885,10 +1895,6 @@ int ath_tx_start(struct ieee80211_hw *hw
+        * info are no longer valid (overwritten by the ath_frame_info data.
+        */
+ 
+-      bf = ath_tx_setup_buffer(hw, txctl->txq, skb);
+-      if (unlikely(!bf))
+-              return -ENOMEM;
+-
+       q = skb_get_queue_mapping(skb);
+       spin_lock_bh(&txq->axq_lock);
+       if (txq == sc->tx.txq_map[q] &&
+@@ -1898,9 +1904,7 @@ int ath_tx_start(struct ieee80211_hw *hw
+       }
+       spin_unlock_bh(&txq->axq_lock);
+ 
+-      ath_tx_start_dma(sc, bf, txctl);
+-
+-      return 0;
++      return ath_tx_start_dma(sc, skb, txctl);
+ }
+ 
+ /*****************/