diff options
| author | Michal Kazior <michal.kazior@tieto.com> | 2013-09-18 14:43:22 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2013-09-20 08:18:10 +0300 |
| commit | 1f8bb1518eee321d94477ca7bcbb153c47d43ba4 (patch) | |
| tree | 1d2242d63ab28b1de5c4a67b5b749ba8fd1a9437 /drivers/net/wireless/ath/ath10k/txrx.c | |
| parent | 2f3773bcaf9fbf3ddb9d4315e3a3ca5e4b376cef (diff) | |
ath10k: use msdu headroom to store txfrag
Instead of allocating sk_buff for a mere 16-byte
tx fragment list buffer use headroom of the
original msdu sk_buff.
This decreases CPU cache pressure and improves
performance.
Measured improvement on AP135 is 560mbps ->
590mbps of UDP TX briding traffic.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath10k/txrx.c')
| -rw-r--r-- | drivers/net/wireless/ath/ath10k/txrx.c | 16 |
1 files changed, 6 insertions, 10 deletions
diff --git a/drivers/net/wireless/ath/ath10k/txrx.c b/drivers/net/wireless/ath/ath10k/txrx.c index 15395afae95..57931d0fae4 100644 --- a/drivers/net/wireless/ath/ath10k/txrx.c +++ b/drivers/net/wireless/ath/ath10k/txrx.c @@ -49,7 +49,8 @@ void ath10k_txrx_tx_unref(struct ath10k_htt *htt, { struct device *dev = htt->ar->dev; struct ieee80211_tx_info *info; - struct sk_buff *msdu, *txfrag; + struct ath10k_skb_cb *skb_cb; + struct sk_buff *msdu; int ret; ath10k_dbg(ATH10K_DBG_HTT, "htt tx completion msdu_id %u discard %d no_ack %d\n", @@ -62,20 +63,15 @@ void ath10k_txrx_tx_unref(struct ath10k_htt *htt, } msdu = htt->pending_tx[tx_done->msdu_id]; - txfrag = ATH10K_SKB_CB(msdu)->htt.txfrag; - - if (txfrag) { - ret = ath10k_skb_unmap(dev, txfrag); - if (ret) - ath10k_warn("txfrag unmap failed (%d)\n", ret); - - dev_kfree_skb_any(txfrag); - } + skb_cb = ATH10K_SKB_CB(msdu); ret = ath10k_skb_unmap(dev, msdu); if (ret) ath10k_warn("data skb unmap failed (%d)\n", ret); + if (skb_cb->htt.frag_len) + skb_pull(msdu, skb_cb->htt.frag_len + skb_cb->htt.pad_len); + ath10k_report_offchan_tx(htt->ar, msdu); info = IEEE80211_SKB_CB(msdu); |