iwlagn: set rts retry limit

setup the rts rety limit for tx command

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

2 files changed, 13 insertions, 10 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-hw.h b/drivers/net/wireless/iwlwifi/iwl-agn-hw.h
index 33951a11327d..64e3417d19ea 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-hw.h
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-hw.h
@@ -81,7 +81,10 @@
 /* RSSI to dBm */
 #define IWLAGN_RSSI_OFFSET      44
 
-#define IWLAGN_DEFAULT_TX_RETRY  15
+#define IWLAGN_DEFAULT_TX_RETRY                 15
+#define IWLAGN_MGMT_DFAULT_RETRY_LIMIT          3
+#define IWLAGN_RTS_DFAULT_RETRY_LIMIT           60
+#define IWLAGN_BAR_DFAULT_RETRY_LIMIT           60
 
 /* Limit range of txpower output target to be between these values */
 #define IWLAGN_TX_POWER_TARGET_POWER_MIN        (0)     /* 0 dBm: 1 milliwatt */
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
index dcb3bd67d4f9..2584f6f70a16 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-tx.c
@@ -113,8 +113,6 @@ static void iwlagn_tx_cmd_build_basic(struct iwl_priv *priv,
         tx_cmd->next_frame_len = 0;
 }
 
-#define RTS_DFAULT_RETRY_LIMIT          60
-
 static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv,
                                      struct iwl_tx_cmd *tx_cmd,
                                      struct ieee80211_tx_info *info,
@@ -126,17 +124,19 @@ static void iwlagn_tx_cmd_build_rate(struct iwl_priv *priv,
         u8 data_retry_limit;
         u8 rate_plcp;
 
+        /* Set retry limit on RTS packets */
+        rts_retry_limit = IWLAGN_RTS_DFAULT_RETRY_LIMIT;
+
         /* Set retry limit on DATA packets and Probe Responses*/
-        if (ieee80211_is_probe_resp(fc))
-                data_retry_limit = 3;
+        if (ieee80211_is_probe_resp(fc)) {
+                data_retry_limit = IWLAGN_MGMT_DFAULT_RETRY_LIMIT;
+                rts_retry_limit = min(data_retry_limit, rts_retry_limit);
+        } else if (ieee80211_is_back_req(fc))
+                data_retry_limit = IWLAGN_BAR_DFAULT_RETRY_LIMIT;
         else
                 data_retry_limit = IWLAGN_DEFAULT_TX_RETRY;
-        tx_cmd->data_retry_limit = data_retry_limit;
 
-        /* Set retry limit on RTS packets */
-        rts_retry_limit = RTS_DFAULT_RETRY_LIMIT;
-        if (data_retry_limit < rts_retry_limit)
-                rts_retry_limit = data_retry_limit;
+        tx_cmd->data_retry_limit = data_retry_limit;
         tx_cmd->rts_retry_limit = rts_retry_limit;
 
         /* DATA packets will use the uCode station table for rate/antenna