@@ -105,7 +105,6 @@ enum buffer_type {
#define bf_al bf_state.bfs_al
#define bf_frmlen bf_state.bfs_frmlen
#define bf_retries bf_state.bfs_retries
-#define bf_seqno bf_state.bfs_seqno
#define bf_tidno bf_state.bfs_tidno
#define bf_keyix bf_state.bfs_keyix
#define bf_keytype bf_state.bfs_keytype
@@ -221,7 +220,6 @@ struct ath_buf_state {
int bfs_nframes;
u16 bfs_al;
u16 bfs_frmlen;
- int bfs_seqno;
int bfs_tidno;
int bfs_retries;
u8 bf_type;
@@ -140,6 +140,12 @@ unlock:
spin_unlock_bh(&txq->axq_lock);
}
+static u16 ath_frame_seqno(struct sk_buff *skb)
+{
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+ return le16_to_cpu(hdr->seq_ctrl) >> IEEE80211_SEQ_SEQ_SHIFT;
+}
+
static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
{
struct ath_txq *txq = tid->ac->txq;
@@ -157,7 +163,7 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
list_move_tail(&bf->list, &bf_head);
if (bf_isretried(bf)) {
- ath_tx_update_baw(sc, tid, bf->bf_seqno);
+ ath_tx_update_baw(sc, tid, ath_frame_seqno(bf->bf_mpdu));
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0);
} else {
ath_tx_send_normal(sc, txq, tid, &bf_head);
@@ -184,14 +190,11 @@ static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
}
static void ath_tx_addto_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
- struct ath_buf *bf)
+ u16 seqno)
{
int index, cindex;
- if (bf_isretried(bf))
- return;
-
- index = ATH_BA_INDEX(tid->seq_start, bf->bf_seqno);
+ index = ATH_BA_INDEX(tid->seq_start, seqno);
cindex = (tid->baw_head + index) & (ATH_TID_MAX_BUFS - 1);
__set_bit(cindex, tid->tx_buf);
@@ -215,6 +218,7 @@ static void ath_tid_drain(struct ath_softc *sc, struct ath_txq *txq,
struct ath_buf *bf;
struct list_head bf_head;
struct ath_tx_status ts;
+ u16 bf_seqno;
memset(&ts, 0, sizeof(ts));
INIT_LIST_HEAD(&bf_head);
@@ -226,8 +230,9 @@ static void ath_tid_drain(struct ath_softc *sc, struct ath_txq *txq,
bf = list_first_entry(&tid->buf_q, struct ath_buf, list);
list_move_tail(&bf->list, &bf_head);
+ bf_seqno = ath_frame_seqno(bf->bf_mpdu);
if (bf_isretried(bf))
- ath_tx_update_baw(sc, tid, bf->bf_seqno);
+ ath_tx_update_baw(sc, tid, bf_seqno);
spin_unlock(&txq->axq_lock);
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0);
@@ -316,6 +321,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
int isaggr, txfail, txpending, sendbar = 0, needreset = 0, nbad = 0;
bool rc_update = true;
struct ieee80211_tx_rate rates[4];
+ u16 bf_seqno;
int nframes;
skb = bf->bf_mpdu;
@@ -392,8 +398,9 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
skb = bf->bf_mpdu;
tx_info = IEEE80211_SKB_CB(skb);
+ bf_seqno = ath_frame_seqno(skb);
- if (ATH_BA_ISSET(ba, ATH_BA_INDEX(seq_st, bf->bf_seqno))) {
+ if (ATH_BA_ISSET(ba, ATH_BA_INDEX(seq_st, bf_seqno))) {
/* transmit completion, subframe is
* acked by block ack */
acked_cnt++;
@@ -442,7 +449,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
* block-ack window
*/
spin_lock_bh(&txq->axq_lock);
- ath_tx_update_baw(sc, tid, bf->bf_seqno);
+ ath_tx_update_baw(sc, tid, bf_seqno);
spin_unlock_bh(&txq->axq_lock);
if (rc_update && (acked_cnt == 1 || txfail_cnt == 1)) {
@@ -471,7 +478,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
if (!tbf) {
spin_lock_bh(&txq->axq_lock);
ath_tx_update_baw(sc, tid,
- bf->bf_seqno);
+ bf_seqno);
spin_unlock_bh(&txq->axq_lock);
bf->bf_state.bf_type |=
@@ -674,14 +681,16 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc,
al_delta, h_baw = tid->baw_size / 2;
enum ATH_AGGR_STATUS status = ATH_AGGR_DONE;
struct ieee80211_tx_info *tx_info;
+ u16 bf_seqno;
bf_first = list_first_entry(&tid->buf_q, struct ath_buf, list);
do {
bf = list_first_entry(&tid->buf_q, struct ath_buf, list);
+ bf_seqno = ath_frame_seqno(bf->bf_mpdu);
/* do not step over block-ack window */
- if (!BAW_WITHIN(tid->seq_start, tid->baw_size, bf->bf_seqno)) {
+ if (!BAW_WITHIN(tid->seq_start, tid->baw_size, bf_seqno)) {
status = ATH_AGGR_BAW_CLOSED;
break;
}
@@ -726,7 +735,8 @@ static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc,
ath9k_hw_set_desc_link(sc->sc_ah, bf->bf_desc, 0);
/* link buffers of this frame to the aggregate */
- ath_tx_addto_baw(sc, tid, bf);
+ if (!bf_isretried(bf))
+ ath_tx_addto_baw(sc, tid, bf_seqno);
ath9k_hw_set11n_aggr_middle(sc->sc_ah, bf->bf_desc, ndelim);
list_move_tail(&bf->list, bf_q);
if (bf_prev) {
@@ -1288,10 +1298,12 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
struct ath_tx_control *txctl)
{
struct ath_buf *bf;
+ u16 bf_seqno;
bf = list_first_entry(bf_head, struct ath_buf, list);
bf->bf_state.bf_type |= BUF_AMPDU;
TX_STAT_INC(txctl->txq->axq_qnum, a_queued);
+ bf_seqno = ath_frame_seqno(bf->bf_mpdu);
/*
* Do not queue to h/w when any of the following conditions is true:
@@ -1301,7 +1313,7 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
* - h/w queue depth exceeds low water mark
*/
if (!list_empty(&tid->buf_q) || tid->paused ||
- !BAW_WITHIN(tid->seq_start, tid->baw_size, bf->bf_seqno) ||
+ !BAW_WITHIN(tid->seq_start, tid->baw_size, bf_seqno) ||
txctl->txq->axq_depth >= ATH_AGGR_MIN_QDEPTH) {
/*
* Add this frame to software queue for scheduling later
@@ -1313,7 +1325,8 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
}
/* Add sub-frame to BAW */
- ath_tx_addto_baw(sc, tid, bf);
+ if (!bf_isretried(bf))
+ ath_tx_addto_baw(sc, tid, bf_seqno);
/* Queue to h/w without aggregation */
bf->bf_nframes = 1;
@@ -1394,7 +1407,6 @@ static void assign_aggr_tid_seqno(struct sk_buff *skb,
*/
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);
}
@@ -1903,7 +1915,7 @@ static int ath_tx_num_badfrms(struct ath_softc *sc, struct ath_buf *bf,
}
while (bf) {
- ba_index = ATH_BA_INDEX(seq_st, bf->bf_seqno);
+ ba_index = ATH_BA_INDEX(seq_st, ath_frame_seqno(bf->bf_mpdu));
if (!txok || (isaggr && !ATH_BA_ISSET(ba, ba_index)))
nbad++;