Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (40 commits)
  tg3: Fix tg3_skb_error_unmap()
  net: tracepoint of net_dev_xmit sees freed skb and causes panic
  drivers/net/can/flexcan.c: add missing clk_put
  net: dm9000: Get the chip in a known good state before enabling interrupts
  drivers/net/davinci_emac.c: add missing clk_put
  af-packet: Add flag to distinguish VID 0 from no-vlan.
  caif: Fix race when conditionally taking rtnl lock
  usbnet/cdc_ncm: add missing .reset_resume hook
  vlan: fix typo in vlan_dev_hard_start_xmit()
  net/ipv4: Check for mistakenly passed in non-IPv4 address
  iwl4965: correctly validate temperature value
  bluetooth l2cap: fix locking in l2cap_global_chan_by_psm
  ath9k: fix two more bugs in tx power
  cfg80211: don't drop p2p probe responses
  Revert "net: fix section mismatches"
  drivers/net/usb/catc.c: Fix potential deadlock in catc_ctrl_run()
  sctp: stop pending timers and purge queues when peer restart asoc
  drivers/net: ks8842 Fix crash on received packet when in PIO mode.
  ip_options_compile: properly handle unaligned pointer
  iwlagn: fix incorrect PCI subsystem id for 6150 devices
  ...

1 files changed, 22 insertions, 13 deletions

diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
index a40952845436..89100e7c553b 100644
--- a/drivers/net/wireless/rtlwifi/pci.c
+++ b/drivers/net/wireless/rtlwifi/pci.c
@@ -669,11 +669,6 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
                                                          &rx_status,
                                                          (u8 *) pdesc, skb);
 
-                        pci_unmap_single(rtlpci->pdev,
-                                         *((dma_addr_t *) skb->cb),
-                                         rtlpci->rxbuffersize,
-                                         PCI_DMA_FROMDEVICE);
-
                         skb_put(skb, rtlpriv->cfg->ops->get_desc((u8 *) pdesc,
                                                          false,
                                                          HW_DESC_RXPKT_LEN));
@@ -690,6 +685,21 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
                         hdr = rtl_get_hdr(skb);
                         fc = rtl_get_fc(skb);
 
+                        /* try for new buffer - if allocation fails, drop
+                         * frame and reuse old buffer
+                         */
+                        new_skb = dev_alloc_skb(rtlpci->rxbuffersize);
+                        if (unlikely(!new_skb)) {
+                                RT_TRACE(rtlpriv, (COMP_INTR | COMP_RECV),
+                                         DBG_DMESG,
+                                         ("can't alloc skb for rx\n"));
+                                goto done;
+                        }
+                        pci_unmap_single(rtlpci->pdev,
+                                         *((dma_addr_t *) skb->cb),
+                                         rtlpci->rxbuffersize,
+                                         PCI_DMA_FROMDEVICE);
+
                         if (!stats.crc || !stats.hwerror) {
                                 memcpy(IEEE80211_SKB_RXCB(skb), &rx_status,
                                        sizeof(rx_status));
@@ -758,15 +768,7 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
                                 rtl_lps_leave(hw);
                         }
 
-                        new_skb = dev_alloc_skb(rtlpci->rxbuffersize);
-                        if (unlikely(!new_skb)) {
-                                RT_TRACE(rtlpriv, (COMP_INTR | COMP_RECV),
-                                         DBG_DMESG,
-                                         ("can't alloc skb for rx\n"));
-                                goto done;
-                        }
                         skb = new_skb;
-                        /*skb->dev = dev; */
 
                         rtlpci->rx_ring[rx_queue_idx].rx_buf[rtlpci->
                                                              rx_ring
@@ -1113,6 +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);