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mac80211: Beacon protection using the new BIGTK (AP)

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

Signed-off-by: Jouni Malinen <jouni@codeaurora.org>
Link: https://lore.kernel.org/r/20200222132548.20835-5-jouni@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Jouni Malinen 2020-02-22 15:25:46 +02:00 committed by Johannes Berg
parent 2d5d4b0a6d
commit 0a3a84360b
1 changed files with 25 additions and 0 deletions
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25
net/mac80211/tx.c
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@ -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) {