From 0019a2c9277bf6d083032a5a9857249e75407a8c Mon Sep 17 00:00:00 2001 From: Larry Finger Date: Thu, 19 May 2011 11:48:45 -0500 Subject: [PATCH] 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 Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/pci.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c index c2b83a57c581..89100e7c553b 100644 --- a/drivers/net/wireless/rtlwifi/pci.c +++ b/drivers/net/wireless/rtlwifi/pci.c @@ -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); -- 2.20.1