Commit 0a3a8436 authored by Jouni Malinen's avatar Jouni Malinen Committed by Johannes Berg
Browse files

mac80211: Beacon protection using the new BIGTK (AP) 



This adds support for mac80211 to add an MME into Beacon frames in AP
mode when a BIGTK is configured.

Signed-off-by: default avatarJouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20200222132548.20835-5-jouni@codeaurora.org


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 2d5d4b0a

net/mac80211/tx.c

+25 −0
Original line number Diff line number Diff line
@@ -4664,6 +4664,28 @@ bool ieee80211_csa_is_complete(struct ieee80211_vif *vif) 
}

EXPORT_SYMBOL(ieee80211_csa_is_complete);



static int ieee80211_beacon_protect(struct sk_buff *skb,

				    struct ieee80211_local *local,

				    struct ieee80211_sub_if_data *sdata)

{

	ieee80211_tx_result res;

	struct ieee80211_tx_data tx;



	memset(&tx, 0, sizeof(tx));

	tx.key = rcu_dereference(sdata->default_beacon_key);

	if (!tx.key)

		return 0;

	tx.local = local;

	tx.sdata = sdata;

	__skb_queue_head_init(&tx.skbs);

	__skb_queue_tail(&tx.skbs, skb);

	res = ieee80211_tx_h_encrypt(&tx);

	if (WARN_ON_ONCE(res != TX_CONTINUE))

		return -1;



	return 0;

}



static struct sk_buff *

__ieee80211_beacon_get(struct ieee80211_hw *hw,

		       struct ieee80211_vif *vif,
@@ -4731,6 +4753,9 @@ __ieee80211_beacon_get(struct ieee80211_hw *hw, 
			if (beacon->tail)

				skb_put_data(skb, beacon->tail,

					     beacon->tail_len);



			if (ieee80211_beacon_protect(skb, local, sdata) < 0)

				goto out;

		} else

			goto out;

	} else if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {

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