iwlwifi: enhance WPA authenication stability
This patch enhanced WPA authenication stability by avoiding scan
immediately followed by association. We don't do any scanning right
after association in next several seconds. This will allow WPA
authentication to take place without any interruption.
Signed-off-by: Mohamed Abbas <mabbas@linux.intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-4965.c b/drivers/net/wireless/iwlwifi/iwl-4965.c
index 40c795e..c8e7adf 100644
--- a/drivers/net/wireless/iwlwifi/iwl-4965.c
+++ b/drivers/net/wireless/iwlwifi/iwl-4965.c
@@ -3802,6 +3802,8 @@
}
}
+#define IWL_DELAY_NEXT_SCAN_AFTER_ASSOC (HZ*6)
+
/* Called for REPLY_4965_RX (legacy ABG frames), or
* REPLY_RX_MPDU_CMD (HT high-throughput N frames). */
static void iwl4965_rx_reply_rx(struct iwl4965_priv *priv,
@@ -3973,6 +3975,12 @@
struct ieee80211_mgmt *mgnt =
(struct ieee80211_mgmt *)header;
+ /* We have just associated, give some
+ * time for the 4-way handshake if
+ * any. Don't start scan too early. */
+ priv->next_scan_jiffies = jiffies +
+ IWL_DELAY_NEXT_SCAN_AFTER_ASSOC;
+
priv->assoc_id = (~((1 << 15) | (1 << 14))
& le16_to_cpu(mgnt->u.assoc_resp.aid));
priv->assoc_capability =