[PATCH] ieee80211: Fixed a kernel oops on module unload

tree 367069f24fc38b4aa910e86ff40094d2078d8aa7
parent a33a198201
author James Ketrenos <jketreno@linux.intel.com> 1124430800 -0500
committer James Ketrenos <jketreno@linux.intel.com> 1127310571 -0500

Fixed a kernel oops on module unload by adding spin lock protection to
ieee80211's crypt handlers (thanks to Zhu Yi)

Modified scan result logic to report WPA and RSN IEs if set (vs.being
based on wpa_enabled)

Added ieee80211_device as the first parameter to the crypt init()
method.  TKIP modified to use that structure for determining whether to
countermeasures are active.

Signed-off-by: James Ketrenos <jketreno@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

net/ieee80211/ieee80211_rx.c

@@ -280,17 +280,6 @@ ieee80211_rx_frame_decrypt(struct ieee80211_device *ieee, struct sk_buff *skb,
 	hdr = (struct ieee80211_hdr *)skb->data;
 	hdrlen = ieee80211_get_hdrlen(le16_to_cpu(hdr->frame_ctl));
 
-#ifdef CONFIG_IEEE80211_CRYPT_TKIP
-	if (ieee->tkip_countermeasures && strcmp(crypt->ops->name, "TKIP") == 0) {
-		if (net_ratelimit()) {
-			printk(KERN_DEBUG "%s: TKIP countermeasures: dropped "
-			       "received packet from " MAC_FMT "\n",
-			       ieee->dev->name, MAC_ARG(hdr->addr2));
-		}
-		return -1;
-	}
-#endif
-
 	atomic_inc(&crypt->refcnt);
 	res = crypt->ops->decrypt_mpdu(skb, hdrlen, crypt->priv);
 	atomic_dec(&crypt->refcnt);