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ath10k: improve tx throughput on slow machines

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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)