From b98ea05861d76f458029096e8b2939fcb58e9530 Mon Sep 17 00:00:00 2001 From: Saravana Date: Tue, 4 Dec 2012 19:47:42 +0530 Subject: mac80211: add debug file for mic failure The mic failure count provides the number of mic failures that have happened on a given key (without a countermeasure being started, since that would remove the key). Signed-off-by: Saravana [fix NULL pointer issues] Signed-off-by: Johannes Berg --- net/mac80211/wpa.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'net/mac80211/wpa.c') diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c index 8bd2f5c6a56e..c175ee866ff4 100644 --- a/net/mac80211/wpa.c +++ b/net/mac80211/wpa.c @@ -104,7 +104,7 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx) */ if (status->flag & (RX_FLAG_MMIC_STRIPPED | RX_FLAG_IV_STRIPPED)) { if (status->flag & RX_FLAG_MMIC_ERROR) - goto mic_fail; + goto mic_fail_no_key; if (!(status->flag & RX_FLAG_IV_STRIPPED) && rx->key && rx->key->conf.cipher == WLAN_CIPHER_SUITE_TKIP) @@ -161,6 +161,9 @@ update_iv: return RX_CONTINUE; mic_fail: + rx->key->u.tkip.mic_failures++; + +mic_fail_no_key: /* * In some cases the key can be unset - e.g. a multicast packet, in * a driver that supports HW encryption. Send up the key idx only if -- cgit v1.2.3