4 files changed, 23 insertions, 3 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-6000.c b/drivers/net/wireless/iwlwifi/iwl-6000.c
index c295b8ee9228..1473452ba22f 100644
--- a/drivers/net/wireless/iwlwifi/iwl-6000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-6000.c
@@ -175,6 +175,7 @@ struct iwl_cfg iwl6000h_2agn_cfg = {
         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
         .shadow_ram_support = true,
         .ht_greenfield_support = true,
+        .use_rts_for_ht = true, /* use rts/cts protection */
 };
 
 /*
@@ -198,6 +199,7 @@ struct iwl_cfg iwl6000i_2agn_cfg = {
         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
         .shadow_ram_support = true,
         .ht_greenfield_support = true,
+        .use_rts_for_ht = true, /* use rts/cts protection */
 };
 
 struct iwl_cfg iwl6050_2agn_cfg = {
@@ -218,6 +220,7 @@ struct iwl_cfg iwl6050_2agn_cfg = {
         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
         .shadow_ram_support = true,
         .ht_greenfield_support = true,
+        .use_rts_for_ht = true, /* use rts/cts protection */
 };
 
 struct iwl_cfg iwl6000_3agn_cfg = {
@@ -238,6 +241,7 @@ struct iwl_cfg iwl6000_3agn_cfg = {
         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
         .shadow_ram_support = true,
         .ht_greenfield_support = true,
+        .use_rts_for_ht = true, /* use rts/cts protection */
 };
 
 struct iwl_cfg iwl6050_3agn_cfg = {
@@ -258,6 +262,7 @@ struct iwl_cfg iwl6050_3agn_cfg = {
         .max_ll_items = OTP_MAX_LL_ITEMS_6x00,
         .shadow_ram_support = true,
         .ht_greenfield_support = true,
+        .use_rts_for_ht = true, /* use rts/cts protection */
 };
 
 MODULE_FIRMWARE(IWL6000_MODULE_FIRMWARE(IWL6000_UCODE_API_MAX));
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index 346dc06fa7b7..81726ee32858 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -418,6 +418,15 @@ static void rs_tl_turn_on_agg(struct iwl_priv *priv, u8 tid,
         else if (tid == IWL_AGG_ALL_TID)
                 for (tid = 0; tid < TID_MAX_LOAD_COUNT; tid++)
                         rs_tl_turn_on_agg_for_tid(priv, lq_data, tid, sta);
+        if (priv->cfg->use_rts_for_ht) {
+                /*
+                 * switch to RTS/CTS if it is the prefer protection method
+                 * for HT traffic
+                 */
+                IWL_DEBUG_HT(priv, "use RTS/CTS protection for HT\n");
+                priv->staging_rxon.flags &= ~RXON_FLG_SELF_CTS_EN;
+                iwlcore_commit_rxon(priv);
+        }
 }
 
 static inline int get_num_of_ant_from_rate(u32 rate_n_flags)
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 9b5ea8ba7216..877af443aac0 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -115,9 +115,6 @@ int iwl_commit_rxon(struct iwl_priv *priv)
 
         /* always get timestamp with Rx frame */
         priv->staging_rxon.flags |= RXON_FLG_TSF2HOST_MSK;
-        /* allow CTS-to-self if possible. this is relevant only for
-         * 5000, but will not damage 4965 */
-        priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
 
         ret = iwl_check_rxon_cmd(priv);
         if (ret) {
@@ -217,6 +214,13 @@ int iwl_commit_rxon(struct iwl_priv *priv)
                                         "Could not send WEP static key.\n");
                 }
 
+                /*
+                 * allow CTS-to-self if possible for new association.
+                 * this is relevant only for 5000 series and up,
+                 * but will not damage 4965
+                 */
+                priv->staging_rxon.flags |= RXON_FLG_SELF_CTS_EN;
+
                 /* Apply the new configuration
                  * RXON assoc doesn't clear the station table in uCode,
                  */
diff --git a/drivers/net/wireless/iwlwifi/iwl-core.h b/drivers/net/wireless/iwlwifi/iwl-core.h
index e50103a956b1..7754538c2194 100644
--- a/drivers/net/wireless/iwlwifi/iwl-core.h
+++ b/drivers/net/wireless/iwlwifi/iwl-core.h
@@ -213,6 +213,7 @@ struct iwl_mod_params {
  * @pa_type: used by 6000 series only to identify the type of Power Amplifier
  * @max_ll_items: max number of OTP blocks
  * @shadow_ram_support: shadow support for OTP memory
+ * @use_rts_for_ht: use rts/cts protection for HT traffic
  *
  * We enable the driver to be backward compatible wrt API version. The
  * driver specifies which APIs it supports (with @ucode_api_max being the
@@ -255,6 +256,7 @@ struct iwl_cfg {
         const bool shadow_ram_support;
         const bool ht_greenfield_support;
         const bool broken_powersave;
+        bool use_rts_for_ht;
 };
 
 /***************************