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| author | Jouni Malinen <jouni@codeaurora.org> | 2020-02-22 15:25:46 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2020-02-24 10:36:11 +0100 |
| commit | 0a3a84360b376e474f8cc0b6d03b7fcf2dd5c592 (patch) | |
| tree | df5ae4e32dfab767c0aee35c15ff8d11de6f8bf7 | |
| parent | 2d5d4b0a6da1271a7dfa9a7052870361e72ba424 (diff) | |
| download | linux-stable-0a3a84360b376e474f8cc0b6d03b7fcf2dd5c592.tar.gz linux-stable-0a3a84360b376e474f8cc0b6d03b7fcf2dd5c592.tar.bz2 linux-stable-0a3a84360b376e474f8cc0b6d03b7fcf2dd5c592.zip | |
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: 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>
| -rw-r--r-- | net/mac80211/tx.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c index cddaacaa31a3..83147385c200 100644 --- a/net/mac80211/tx.c +++ b/net/mac80211/tx.c @@ -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) { |