ath5k: add hardware CCMP encyption support

Recent ath5k hardware is capable of doing CCMP acceleration.
Enable it for the cards that support it.

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath5k/attach.c b/drivers/net/wireless/ath/ath5k/attach.c
index 65d438b59f6..109ab7ba304 100644
--- a/drivers/net/wireless/ath/ath5k/attach.c
+++ b/drivers/net/wireless/ath/ath5k/attach.c
@@ -106,6 +106,7 @@ struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version)
 {
         struct ath5k_hw *ah;
         struct pci_dev *pdev = sc->pdev;
+        struct ath5k_eeprom_info *ee;
         int ret;
         u32 srev;
 
@@ -315,6 +316,15 @@ struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version)
                 goto err_free;
         }
 
+        /* Crypto settings */
+        ee = &ah->ah_capabilities.cap_eeprom;
+        ah->ah_aes_support =
+                (ee->ee_version >= AR5K_EEPROM_VERSION_5_0 &&
+                 !AR5K_EEPROM_AES_DIS(ee->ee_misc5) &&
+                 (ah->ah_mac_version > (AR5K_SREV_AR5212 >> 4) ||
+                  (ah->ah_mac_version == (AR5K_SREV_AR5212 >> 4) &&
+                   ah->ah_mac_revision >= (AR5K_SREV_AR5211 >> 4))));
+
         if (srev >= AR5K_SREV_AR2414) {
                 ah->ah_combined_mic = true;
                 AR5K_REG_ENABLE_BITS(ah, AR5K_MISC_MODE,