iwlwifi-2.6: enables RX TKIP decryption in HW

This patch enables RX TKIP decryption in HW.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index ae8fc8cb4d18..bd5375984045 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -7187,6 +7187,56 @@ out_unlock:
         return rc;
 }
 
+static void iwl4965_mac_update_tkip_key(struct ieee80211_hw *hw,
+                        struct ieee80211_key_conf *keyconf, const u8 *addr,
+                        u32 iv32, u16 *phase1key)
+{
+        struct iwl_priv *priv = hw->priv;
+        u8 sta_id = IWL_INVALID_STATION;
+        unsigned long flags;
+        __le16 key_flags = 0;
+        int i;
+        DECLARE_MAC_BUF(mac);
+
+        IWL_DEBUG_MAC80211("enter\n");
+
+        sta_id = iwl4965_hw_find_station(priv, addr);
+        if (sta_id == IWL_INVALID_STATION) {
+                IWL_DEBUG_MAC80211("leave - %s not in station map.\n",
+                                   print_mac(mac, addr));
+                return;
+        }
+
+        iwl4965_scan_cancel_timeout(priv, 100);
+
+        key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
+        key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
+        key_flags &= ~STA_KEY_FLG_INVALID;
+
+        if (sta_id == priv->hw_setting.bcast_sta_id)
+                key_flags |= STA_KEY_MULTICAST_MSK;
+
+        spin_lock_irqsave(&priv->sta_lock, flags);
+
+        priv->stations[sta_id].sta.key.key_offset =
+                                        (sta_id % STA_KEY_MAX_NUM);/* FIXME */
+        priv->stations[sta_id].sta.key.key_flags = key_flags;
+        priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
+
+        for (i = 0; i < 5; i++)
+                priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
+                        cpu_to_le16(phase1key[i]);
+
+        priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
+        priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
+
+        iwl4965_send_add_station(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
+
+        spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+        IWL_DEBUG_MAC80211("leave\n");
+}
+
 static int iwl4965_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
                            const u8 *local_addr, const u8 *addr,
                            struct ieee80211_key_conf *key)
@@ -8128,6 +8178,7 @@ static struct ieee80211_ops iwl4965_hw_ops = {
         .config_interface = iwl4965_mac_config_interface,
         .configure_filter = iwl4965_configure_filter,
         .set_key = iwl4965_mac_set_key,
+        .update_tkip_key = iwl4965_mac_update_tkip_key,
         .get_stats = iwl4965_mac_get_stats,
         .get_tx_stats = iwl4965_mac_get_tx_stats,
         .conf_tx = iwl4965_mac_conf_tx,