p54pci: rx frame length check

Commit Message

Christian Lamparter Jan. 17, 2010, 11:07 p.m. UTC

None

Patch

diff --git a/drivers/net/wireless/p54/p54pci.c b/drivers/net/wireless/p54/p54pci.c
index a227c3d..48cae48 100644
--- a/drivers/net/wireless/p54/p54pci.c
+++ b/drivers/net/wireless/p54/p54pci.c
@@ -205,6 +205,14 @@  static void p54p_check_rx_ring(struct ieee80211_hw *dev, u32 *index,
 			i %= ring_limit;
 			continue;
 		}
+
+		if (unlikely(len > priv->common.rx_mtu)) {
+			if (net_ratelimit())
+				dev_err(&priv->pdev->dev, "rx'd frame size "
+					"exceeds length threshold.\n");
+
+			len = priv->common.rx_mtu;
+		}
 		skb_put(skb, len);
 
 		if (p54_rx(dev, skb)) {