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ath9k: clean up block ack window handling

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There's no reason to keep pointers to pending tx buffers around, if they're
only used to keep track of which frames are still pending. Use a bitfield
instead.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2010-09-20 13:45:36 +02:00 committed by John W. Linville
parent 9ee82d5410
commit 81ee13ba7e
2 changed files with 4 additions and 6 deletions
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2
drivers/net/wireless/ath/ath9k/ath9k.h
View File

@ -254,7 +254,7 @@ struct ath_atx_tid {
struct list_head buf_q;
struct ath_node *an;
struct ath_atx_ac *ac;
struct ath_buf *tx_buf[ATH_TID_MAX_BUFS];
unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)];
u16 seq_start;
u16 seq_next;
u16 baw_size;

8
drivers/net/wireless/ath/ath9k/xmit.c
View File

@ -168,9 +168,9 @@ static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
index = ATH_BA_INDEX(tid->seq_start, seqno);
cindex = (tid->baw_head + index) & (ATH_TID_MAX_BUFS - 1);
tid->tx_buf[cindex] = NULL;
__clear_bit(cindex, tid->tx_buf);
while (tid->baw_head != tid->baw_tail && !tid->tx_buf[tid->baw_head]) {
while (tid->baw_head != tid->baw_tail && !test_bit(tid->baw_head, tid->tx_buf)) {
INCR(tid->seq_start, IEEE80211_SEQ_MAX);
INCR(tid->baw_head, ATH_TID_MAX_BUFS);
}
@ -186,9 +186,7 @@ static void ath_tx_addto_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
index = ATH_BA_INDEX(tid->seq_start, bf->bf_seqno);
cindex = (tid->baw_head + index) & (ATH_TID_MAX_BUFS - 1);
BUG_ON(tid->tx_buf[cindex] != NULL);
tid->tx_buf[cindex] = bf;
__set_bit(cindex, tid->tx_buf);
if (index >= ((tid->baw_tail - tid->baw_head) &
(ATH_TID_MAX_BUFS - 1))) {