iwlwifi: add value and range define for link quality command

Instead of hardcoding the link quality parameters inside the functions,
adding #define in iwl-commands.h to shared by different functions.
Also include the valid range for number of link quality parameters.

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

3 files changed, 19 insertions, 5 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index 2cdd191205b9..ff20e5048a55 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -2787,9 +2787,10 @@ static void rs_fill_link_cmd(const struct iwl_priv *priv,
                 repeat_rate--;
         }
 
-        lq_cmd->agg_params.agg_frame_cnt_limit = 64;
-        lq_cmd->agg_params.agg_dis_start_th = 3;
-        lq_cmd->agg_params.agg_time_limit = cpu_to_le16(4000);
+        lq_cmd->agg_params.agg_frame_cnt_limit = LINK_QUAL_AGG_FRAME_LIMIT_MAX;
+        lq_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
+        lq_cmd->agg_params.agg_time_limit =
+                cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
 }
 
 static void *rs_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
diff --git a/drivers/net/wireless/iwlwifi/iwl-commands.h b/drivers/net/wireless/iwlwifi/iwl-commands.h
index b3229f2db503..c87033bf3ad2 100644
--- a/drivers/net/wireless/iwlwifi/iwl-commands.h
+++ b/drivers/net/wireless/iwlwifi/iwl-commands.h
@@ -1913,6 +1913,18 @@ struct iwl_link_qual_general_params {
         u8 start_rate_index[LINK_QUAL_AC_NUM];
 } __attribute__ ((packed));
 
+#define LINK_QUAL_AGG_TIME_LIMIT_DEF    (4000) /* 4 milliseconds */
+#define LINK_QUAL_AGG_TIME_LIMIT_MAX    (65535)
+#define LINK_QUAL_AGG_TIME_LIMIT_MIN    (0)
+
+#define LINK_QUAL_AGG_DISABLE_START_DEF (3)
+#define LINK_QUAL_AGG_DISABLE_START_MAX (255)
+#define LINK_QUAL_AGG_DISABLE_START_MIN (0)
+
+#define LINK_QUAL_AGG_FRAME_LIMIT_DEF   (31)
+#define LINK_QUAL_AGG_FRAME_LIMIT_MAX   (64)
+#define LINK_QUAL_AGG_FRAME_LIMIT_MIN   (0)
+
 /**
  * struct iwl_link_qual_agg_params
  *
diff --git a/drivers/net/wireless/iwlwifi/iwl-sta.c b/drivers/net/wireless/iwlwifi/iwl-sta.c
index 5ea3bc78a66e..2addf735b193 100644
--- a/drivers/net/wireless/iwlwifi/iwl-sta.c
+++ b/drivers/net/wireless/iwlwifi/iwl-sta.c
@@ -985,8 +985,9 @@ static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, bool is_ap)
         link_cmd.general_params.single_stream_ant_msk =
                                 first_antenna(priv->hw_params.valid_tx_ant);
         link_cmd.general_params.dual_stream_ant_msk = 3;
-        link_cmd.agg_params.agg_dis_start_th = 3;
-        link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000);
+        link_cmd.agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
+        link_cmd.agg_params.agg_time_limit =
+                cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
 
         /* Update the rate scaling for control frame Tx to AP */
         link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;