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authorSaravana <saravanad@posedge.com>2012-12-04 18:17:42 +0400
committerJohannes Berg <johannes.berg@intel.com>2012-12-05 12:44:41 +0400
commitb98ea05861d76f458029096e8b2939fcb58e9530 (patch)
treea12b1993b0495a2c5f980f14ea94553ccae2b24e /net/mac80211/wpa.c
parenta6662dbae0b3a7a91317ec88b5aa0cf8d716f183 (diff)
downloadlinux-b98ea05861d76f458029096e8b2939fcb58e9530.tar.xz
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 <saravanad@posedge.com> [fix NULL pointer issues] Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/wpa.c')
-rw-r--r--net/mac80211/wpa.c5
1 files changed, 4 insertions, 1 deletions
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