From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Wed, 19 Mar 2008 23:41:45 +0000 (-0700)
Subject: iwlwifi-2.6: enables HW TKIP encryption
X-Git-Tag: v2.6.26-rc1~1138^2~350^2~19
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2bc750899f2b1da010625d064ad46dc3a8e9a372;p=linux-2.6

iwlwifi-2.6: enables HW TKIP encryption

This patch add support for TKIP encryption (TX) 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>
---

diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.h b/drivers/net/wireless/iwlwifi/iwl-4965.h
index 7baed4db2f..1d7e8f9cf5 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.h
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.h
@@ -481,6 +481,7 @@ struct iwl4965_tid_data {
 struct iwl4965_hw_key {
 	enum ieee80211_key_alg alg;
 	int keylen;
+	struct ieee80211_key_conf *conf;
 	u8 key[32];
 };
 
diff --git a/drivers/net/wireless/iwlwifi/iwl4965-base.c b/drivers/net/wireless/iwlwifi/iwl4965-base.c
index 8de301d1da..ae8fc8cb4d 100644
--- a/drivers/net/wireless/iwlwifi/iwl4965-base.c
+++ b/drivers/net/wireless/iwlwifi/iwl4965-base.c
@@ -1393,7 +1393,27 @@ static int iwl4965_set_tkip_dynamic_key_info(struct iwl_priv *priv,
 				   struct ieee80211_key_conf *keyconf,
 				   u8 sta_id)
 {
-	return -EOPNOTSUPP;
+	unsigned long flags;
+	int ret = 0;
+
+	keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
+	keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
+	keyconf->hw_key_idx = keyconf->keyidx;
+
+	spin_lock_irqsave(&priv->sta_lock, flags);
+
+	priv->stations[sta_id].keyinfo.alg = keyconf->alg;
+	priv->stations[sta_id].keyinfo.conf = keyconf;
+	priv->stations[sta_id].keyinfo.keylen = 16;
+
+	/* This copy is acutally not needed: we get the key with each TX */
+	memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
+
+	memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
+
+	spin_unlock_irqrestore(&priv->sta_lock, flags);
+
+	return ret;
 }
 
 static int iwl4965_clear_sta_key_info(struct iwl_priv *priv, u8 sta_id)
@@ -2341,15 +2361,10 @@ static void iwl4965_build_tx_cmd_hwcrypto(struct iwl_priv *priv,
 		break;
 
 	case ALG_TKIP:
-#if 0
 		cmd->cmd.tx.sec_ctl = TX_CMD_SEC_TKIP;
-
-		if (last_frag)
-			memcpy(cmd->cmd.tx.tkip_mic.byte, skb_frag->tail - 8,
-			       8);
-		else
-			memset(cmd->cmd.tx.tkip_mic.byte, 0, 8);
-#endif
+		ieee80211_get_tkip_key(keyinfo->conf, skb_frag,
+			IEEE80211_TKIP_P2_KEY, cmd->cmd.tx.key);
+		IWL_DEBUG_TX("tx_cmd with tkip hwcrypto\n");
 		break;
 
 	case ALG_WEP: