nl80211: Add support to configure TID specific RTSCTS configuration

This patch adds support to configure per TID RTSCTS control
configuration to enable/disable through the
NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL attribute.
Signed-off-by: NTamizh chelvam <tamizhr@codeaurora.org>
Link: https://lore.kernel.org/r/1579506687-18296-5-git-send-email-tamizhr@codeaurora.orgSigned-off-by: NJohannes Berg <johannes.berg@intel.com>

include/net/cfg80211.h

@@ -637,6 +637,7 @@ struct cfg80211_chan_def {
  * @retry_long: retry count value
  * @retry_short: retry count value
  * @ampdu: Enable/Disable aggregation
+ * @rtscts: Enable/Disable RTS/CTS
  */
 struct cfg80211_tid_cfg {
 	bool config_override;
@@ -645,6 +646,7 @@ struct cfg80211_tid_cfg {
 	enum nl80211_tid_config noack;
 	u8 retry_long, retry_short;
 	enum nl80211_tid_config ampdu;
+	enum nl80211_tid_config rtscts;
 };
 
 /**

include/uapi/linux/nl80211.h

@@ -4798,6 +4798,9 @@ enum nl80211_tid_config {
  * @NL80211_TID_CONFIG_ATTR_AMPDU_CTRL: Enable/Disable aggregation for the TIDs
  *	specified in %NL80211_TID_CONFIG_ATTR_TIDS. Its type is u8, using
  *	the values from &nl80211_tid_config.
+ * @NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL: Enable/Disable RTS_CTS for the TIDs
+ *	specified in %NL80211_TID_CONFIG_ATTR_TIDS. It is u8 type, using
+ *	the values from &nl80211_tid_config.
  */
 enum nl80211_tid_config_attr {
 	__NL80211_TID_CONFIG_ATTR_INVALID,
@@ -4810,6 +4813,7 @@ enum nl80211_tid_config_attr {
 	NL80211_TID_CONFIG_ATTR_RETRY_SHORT,
 	NL80211_TID_CONFIG_ATTR_RETRY_LONG,
 	NL80211_TID_CONFIG_ATTR_AMPDU_CTRL,
+	NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL,
 
 	/* keep last */
 	__NL80211_TID_CONFIG_ATTR_AFTER_LAST,

net/wireless/nl80211.c

@@ -340,6 +340,8 @@ nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
 	[NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1),
 	[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] =
 			NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
+	[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
+			NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
 };
 
 const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
@@ -14055,6 +14057,12 @@ static int parse_tid_conf(struct cfg80211_registered_device *rdev,
 			nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]);
 	}
 
+	if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) {
+		tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL);
+		tid_conf->rtscts =
+			nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
+	}
+
 	if (peer)
 		mask = rdev->wiphy.tid_config_support.peer;
 	else