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Diffstat (limited to 'net/mac80211/wpa.c')
-rw-r--r--net/mac80211/wpa.c20
1 files changed, 14 insertions, 6 deletions
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 345e10e9b313..f809761fbfb5 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -49,7 +49,7 @@ static int ieee80211_get_hdr_info(const struct sk_buff *skb, u8 **sa, u8 **da,
ieee80211_tx_result
ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
{
- u8 *data, *sa, *da, *key, *mic, qos_tid;
+ u8 *data, *sa, *da, *key, *mic, qos_tid, key_offset;
size_t data_len;
u16 fc;
struct sk_buff *skb = tx->skb;
@@ -88,8 +88,12 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
#else
authenticator = 1;
#endif
- key = &tx->key->conf.key[authenticator ? ALG_TKIP_TEMP_AUTH_TX_MIC_KEY :
- ALG_TKIP_TEMP_AUTH_RX_MIC_KEY];
+ /* At this point we know we're using ALG_TKIP. To get the MIC key
+ * we now will rely on the offset from the ieee80211_key_conf::key */
+ key_offset = authenticator ?
+ NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY :
+ NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY;
+ key = &tx->key->conf.key[key_offset];
mic = skb_put(skb, MICHAEL_MIC_LEN);
michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic);
@@ -100,7 +104,7 @@ ieee80211_tx_h_michael_mic_add(struct ieee80211_tx_data *tx)
ieee80211_rx_result
ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
{
- u8 *data, *sa, *da, *key = NULL, qos_tid;
+ u8 *data, *sa, *da, *key = NULL, qos_tid, key_offset;
size_t data_len;
u16 fc;
u8 mic[MICHAEL_MIC_LEN];
@@ -131,8 +135,12 @@ ieee80211_rx_h_michael_mic_verify(struct ieee80211_rx_data *rx)
#else
authenticator = 1;
#endif
- key = &rx->key->conf.key[authenticator ? ALG_TKIP_TEMP_AUTH_RX_MIC_KEY :
- ALG_TKIP_TEMP_AUTH_TX_MIC_KEY];
+ /* At this point we know we're using ALG_TKIP. To get the MIC key
+ * we now will rely on the offset from the ieee80211_key_conf::key */
+ key_offset = authenticator ?
+ NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY :
+ NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY;
+ key = &rx->key->conf.key[key_offset];
michael_mic(key, da, sa, qos_tid & 0x0f, data, data_len, mic);
if (memcmp(mic, data + data_len, MICHAEL_MIC_LEN) != 0 || wpa_test) {
if (!(rx->flags & IEEE80211_RX_RA_MATCH))