ath9k: Setup MFP options for CCMP
Configure hardware CCMP for management frame protection and use
software crypto when needed.
Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath9k/hw.c b/drivers/net/wireless/ath9k/hw.c
index 3c026e6..e9a3951 100644
--- a/drivers/net/wireless/ath9k/hw.c
+++ b/drivers/net/wireless/ath9k/hw.c
@@ -2265,6 +2265,23 @@
if (r)
return r;
+ /* Setup MFP options for CCMP */
+ if (AR_SREV_9280_20_OR_LATER(ah)) {
+ /* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
+ * frames when constructing CCMP AAD. */
+ REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
+ 0xc7ff);
+ ah->sw_mgmt_crypto = false;
+ } else if (AR_SREV_9160_10_OR_LATER(ah)) {
+ /* Disable hardware crypto for management frames */
+ REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
+ AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
+ REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
+ AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
+ ah->sw_mgmt_crypto = true;
+ } else
+ ah->sw_mgmt_crypto = true;
+
if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
ath9k_hw_set_delta_slope(ah, chan);