rtlwifi: Fix large packet issue

An RX buffer is set to 9100 bytes to receive 8K AMSDU; however, an skb
of this size fails in the kernel.

Signed-off-by: Chaoming Li <chaoming_li@realsil.com.cn>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 15 insertions, 3 deletions

diff --git a/drivers/net/wireless/rtlwifi/pci.c b/drivers/net/wireless/rtlwifi/pci.c
index 353e20358885..0fa36aa6701a 100644
--- a/drivers/net/wireless/rtlwifi/pci.c
+++ b/drivers/net/wireless/rtlwifi/pci.c
@@ -612,10 +612,22 @@ static void _rtl_pci_rx_interrupt(struct ieee80211_hw *hw)
                                                     num_rx_inperiod++;
                                 }
 
-                                if (unlikely(!rtl_action_proc(hw, skb, false)))
+                                if (unlikely(!rtl_action_proc(hw, skb,
+                                    false))) {
                                         dev_kfree_skb_any(skb);
-                                else
-                                        ieee80211_rx_irqsafe(hw, skb);
+                                } else {
+                                        struct sk_buff *uskb = NULL;
+                                        u8 *pdata;
+                                        uskb = dev_alloc_skb(skb->len + 128);
+                                        memcpy(IEEE80211_SKB_RXCB(uskb),
+                                                        &rx_status,
+                                                        sizeof(rx_status));
+                                        pdata = (u8 *)skb_put(uskb, skb->len);
+                                        memcpy(pdata, skb->data, skb->len);
+                                        dev_kfree_skb_any(skb);
+
+                                        ieee80211_rx_irqsafe(hw, uskb);
+                                }
                         } else {
                                 dev_kfree_skb_any(skb);
                         }