iwlwifi: fixes RTS / CTS support

This patch fixes the RTS / CTS support in iwlwifi. 5000 will send CTS to
self when allowed by spec, 4965 will send RTS or CTS to self according to
mac80211 request.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Zhu Yi <yi.zhu@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwlwifi/iwl-5000.c b/drivers/net/wireless/iwlwifi/iwl-5000.c
index 3697d0335103..b518792c7231 100644
--- a/drivers/net/wireless/iwlwifi/iwl-5000.c
+++ b/drivers/net/wireless/iwlwifi/iwl-5000.c
@@ -370,6 +370,16 @@ static void iwl5000_chain_noise_reset(struct iwl_priv *priv)
         }
 }
 
+static void iwl5000_rts_tx_cmd_flag(struct ieee80211_tx_info *info,
+                        __le32 *tx_flags)
+{
+        if ((info->flags & IEEE80211_TX_CTL_USE_RTS_CTS) ||
+            (info->flags & IEEE80211_TX_CTL_USE_CTS_PROTECT))
+                *tx_flags |= TX_CMD_FLG_RTS_CTS_MSK;
+        else
+                *tx_flags &= ~TX_CMD_FLG_RTS_CTS_MSK;
+}
+
 static struct iwl_sensitivity_ranges iwl5000_sensitivity = {
         .min_nrg_cck = 95,
         .max_nrg_cck = 0,
@@ -1437,6 +1447,7 @@ static struct iwl_hcmd_utils_ops iwl5000_hcmd_utils = {
         .build_addsta_hcmd = iwl5000_build_addsta_hcmd,
         .gain_computation = iwl5000_gain_computation,
         .chain_noise_reset = iwl5000_chain_noise_reset,
+        .rts_tx_cmd_flag = iwl5000_rts_tx_cmd_flag,
 };
 
 static struct iwl_lib_ops iwl5000_lib = {