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rtlwifi: usb: remove extra skb copy on RX path

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RX path has extra copying of packets, that can be avoided.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jussi Kivilinna 2013-03-17 11:59:18 +02:00 committed by John W. Linville
parent 872de8ff04
commit d7d0f081c4
1 changed files with 3 additions and 14 deletions
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17
drivers/net/wireless/rtlwifi/usb.c
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@ -513,22 +513,11 @@ static void _rtl_usb_rx_process_noagg(struct ieee80211_hw *hw,
if (unicast)
rtlpriv->link_info.num_rx_inperiod++;
}
if (likely(rtl_action_proc(hw, skb, false))) {
struct sk_buff *uskb = NULL;
u8 *pdata;
uskb = dev_alloc_skb(skb->len + 128);
if (uskb) { /* drop packet on allocation failure */
memcpy(IEEE80211_SKB_RXCB(uskb), &rx_status,
sizeof(rx_status));
pdata = (u8 *)skb_put(uskb, skb->len);
memcpy(pdata, skb->data, skb->len);
ieee80211_rx_irqsafe(hw, uskb);
}
if (likely(rtl_action_proc(hw, skb, false)))
ieee80211_rx_irqsafe(hw, skb);
else
dev_kfree_skb_any(skb);
} else {
dev_kfree_skb_any(skb);
}
}
}