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Re: [RFC] cfg80211/mac80211: drop GTK-protected unicast IP packets

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On 2013-12-02 19:51, Johannes Berg wrote:
From: Johannes Berg <johannes.berg@xxxxxxxxx>

The GTK is shared by all stations in an 802.11 BSS and as such any
one of them can send forged group-addressed frames. To prevent this
kind of attack, drop unicast IP packets if they were protected with
the GTK, i.e. were multicast packets at the 802.11 layer.


[...]


+/**
+ * cfg80211_is_ip_unicast - check if packet is IP unicast
+ * @skb: skb, in 802.3 format
+ */
+bool cfg80211_is_ip_unicast(struct sk_buff *skb);
+

Not implemented anywhere. Leftovers?

Cheers,

Pontus

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