Commit 0019a2c9 authored May 19, 2011 by Larry Finger Committed by John W. Linville May 26, 2011

rtlwifi: Use order 2 RX buffer allocation only if necessary



Although a previous fix handles the kernel panics that result from
failure to allocate a new RX buffer, memory fragmentation can be
reduced if the amsdu_8k capability is disabled as new buffers need only
be of O(0), not O(2).

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent a9e12869

drivers/net/wireless/rtlwifi/pci.c

+7 −0

Original line number	Diff line number	Diff line
		@@ -1115,6 +1115,13 @@ static int _rtl_pci_init_rx_ring(struct ieee80211_hw *hw)

		rtlpci->rx_ring[rx_queue_idx].idx = 0;

		/* If amsdu_8k is disabled, set buffersize to 4096. This
		* change will reduce memory fragmentation.
		*/
		if (rtlpci->rxbuffersize > 4096 &&
		rtlpriv->rtlhal.disable_amsdu_8k)
		rtlpci->rxbuffersize = 4096;

		for (i = 0; i < rtlpci->rxringcount; i++) {
		struct sk_buff *skb =
		dev_alloc_skb(rtlpci->rxbuffersize);