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-rw-r--r--net/mac80211/wpa.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index b58722d9de37..785056cb76f6 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -1,7 +1,7 @@
/*
* Copyright 2002-2004, Instant802 Networks, Inc.
* Copyright 2008, Jouni Malinen <j@w1.fi>
- * Copyright (C) 2016 Intel Deutschland GmbH
+ * Copyright (C) 2016-2017 Intel Deutschland GmbH
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -59,8 +59,9 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
if (info->control.hw_key &&
(info->flags & IEEE80211_TX_CTL_DONTFRAG ||
ieee80211_hw_check(&tx->local->hw, SUPPORTS_TX_FRAG)) &&
- !(tx->key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_MMIC)) {
- /* hwaccel - with no need for SW-generated MMIC */
+ !(tx->key->conf.flags & (IEEE80211_KEY_FLAG_GENERATE_MMIC |
+ IEEE80211_KEY_FLAG_PUT_MIC_SPACE))) {
+ /* hwaccel - with no need for SW-generated MMIC or MIC space */
return TX_CONTINUE;
}
@@ -75,8 +76,15 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
skb_tailroom(skb), tail))
return TX_DROP;
- key = &tx->key->conf.key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY];
mic = skb_put(skb, MICHAEL_MIC_LEN);
+
+ if (tx->key->conf.flags & IEEE80211_KEY_FLAG_PUT_MIC_SPACE) {
+ /* Zeroed MIC can help with debug */
+ memset(mic, 0, MICHAEL_MIC_LEN);
+ return TX_CONTINUE;
+ }
+
+ key = &tx->key->conf.key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY];
michael_mic(key, hdr, data, data_len, mic);
if (unlikely(info->flags & IEEE80211_TX_INTFL_TKIP_MIC_FAILURE))
mic[0]++;