Commit ba0ccd7a authored Jul 22, 2013 by Michal Kazior Committed by Kalle Valo Jul 31, 2013

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>

parent 424121c3

drivers/net/wireless/ath/ath10k/mac.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -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)