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ath10k: improve tx throughput on slow machines 

It is more efficient to move just the 802.11
header instead of the whole payload in most cases.

This has no measurable effect on modern hardware.
It should improve performance by a few percent on
hardware such as an Access Point that have a slow
CPU compared to a typical desktop CPU.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior 2013-07-22 14:25:28 +02:00 committed by Kalle Valo
parent 424121c365
commit ba0ccd7aff
1 changed files with 3 additions and 3 deletions
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6
drivers/net/wireless/ath/ath10k/mac.c
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@ -1406,9 +1406,9 @@ static void ath10k_tx_h_qos_workaround(struct ieee80211_hw *hw,
return;
qos_ctl = ieee80211_get_qos_ctl(hdr);
memmove(qos_ctl, qos_ctl + IEEE80211_QOS_CTL_LEN,
skb->len - ieee80211_hdrlen(hdr->frame_control));
skb_trim(skb, skb->len - IEEE80211_QOS_CTL_LEN);
memmove(skb->data + IEEE80211_QOS_CTL_LEN,
skb->data, (void *)qos_ctl - (void *)skb->data);
skb_pull(skb, IEEE80211_QOS_CTL_LEN);
}
static void ath10k_tx_h_update_wep_key(struct sk_buff *skb)