nl80211: Add support to configure TID specific Tx rate configuration

This patch adds support to configure per TID Tx Rate configuration
through NL80211_TID_CONFIG_ATTR_TX_RATE* attributes. And it uses
nl80211_parse_tx_bitrate_mask api to validate the Tx rate mask.

Signed-off-by: Tamizh Chelvam <tamizhr@codeaurora.org>
Link: https://lore.kernel.org/r/1589357504-10175-1-git-send-email-tamizhr@codeaurora.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

2 files changed, 38 insertions, 12 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index f842f3652026..e2dbc9c02ef3 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -630,6 +630,19 @@ struct cfg80211_chan_def {
 	u16 freq1_offset;
 };
 
+/*
+ * cfg80211_bitrate_mask - masks for bitrate control
+ */
+struct cfg80211_bitrate_mask {
+	struct {
+		u32 legacy;
+		u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN];
+		u16 vht_mcs[NL80211_VHT_NSS_MAX];
+		enum nl80211_txrate_gi gi;
+	} control[NUM_NL80211_BANDS];
+};
+
+
 /**
  * struct cfg80211_tid_cfg - TID specific configuration
  * @config_override: Flag to notify driver to reset TID configuration
@@ -643,6 +656,8 @@ struct cfg80211_chan_def {
  * @ampdu: Enable/Disable MPDU aggregation
  * @rtscts: Enable/Disable RTS/CTS
  * @amsdu: Enable/Disable MSDU aggregation
+ * @txrate_type: Tx bitrate mask type
+ * @txrate_mask: Tx bitrate to be applied for the TID
  */
 struct cfg80211_tid_cfg {
 	bool config_override;
@@ -653,6 +668,8 @@ struct cfg80211_tid_cfg {
 	enum nl80211_tid_config ampdu;
 	enum nl80211_tid_config rtscts;
 	enum nl80211_tid_config amsdu;
+	enum nl80211_tx_rate_setting txrate_type;
+	struct cfg80211_bitrate_mask txrate_mask;
 };
 
 /**
@@ -1007,18 +1024,6 @@ struct cfg80211_acl_data {
 	struct mac_address mac_addrs[];
 };
 
-/*
- * cfg80211_bitrate_mask - masks for bitrate control
- */
-struct cfg80211_bitrate_mask {
-	struct {
-		u32 legacy;
-		u8 ht_mcs[IEEE80211_HT_MCS_MASK_LEN];
-		u16 vht_mcs[NL80211_VHT_NSS_MAX];
-		enum nl80211_txrate_gi gi;
-	} control[NUM_NL80211_BANDS];
-};
-
 /**
  * enum cfg80211_ap_settings_flags - AP settings flags
  *
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 0f324b6b81cc..c14666b75e57 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -4841,6 +4841,17 @@ enum nl80211_tid_config {
 	NL80211_TID_CONFIG_DISABLE,
 };
 
+/* enum nl80211_tx_rate_setting - TX rate configuration type
+ * @NL80211_TX_RATE_AUTOMATIC: automatically determine TX rate
+ * @NL80211_TX_RATE_LIMITED: limit the TX rate by the TX rate parameter
+ * @NL80211_TX_RATE_FIXED: fix TX rate to the TX rate parameter
+ */
+enum nl80211_tx_rate_setting {
+	NL80211_TX_RATE_AUTOMATIC,
+	NL80211_TX_RATE_LIMITED,
+	NL80211_TX_RATE_FIXED,
+};
+
 /* enum nl80211_tid_config_attr - TID specific configuration.
  * @NL80211_TID_CONFIG_ATTR_PAD: pad attribute for 64-bit values
  * @NL80211_TID_CONFIG_ATTR_VIF_SUPP: a bitmap (u64) of attributes supported
@@ -4876,6 +4887,14 @@ enum nl80211_tid_config {
  * @NL80211_TID_CONFIG_ATTR_AMSDU_CTRL: Enable/Disable MSDU 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_TX_RATE_TYPE: This attribute will be useful
+ *	to notfiy the driver that what type of txrate should be used
+ *	for the TIDs specified in %NL80211_TID_CONFIG_ATTR_TIDS. using
+ *	the values form &nl80211_tx_rate_setting.
+ * @NL80211_TID_CONFIG_ATTR_TX_RATE: Data frame TX rate mask should be applied
+ *	with the parameters passed through %NL80211_ATTR_TX_RATES.
+ *	configuration is applied to the data frame for the tid to that connected
+ *	station.
  */
 enum nl80211_tid_config_attr {
 	__NL80211_TID_CONFIG_ATTR_INVALID,
@@ -4890,6 +4909,8 @@ enum nl80211_tid_config_attr {
 	NL80211_TID_CONFIG_ATTR_AMPDU_CTRL,
 	NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL,
 	NL80211_TID_CONFIG_ATTR_AMSDU_CTRL,
+	NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE,
+	NL80211_TID_CONFIG_ATTR_TX_RATE,
 
 	/* keep last */
 	__NL80211_TID_CONFIG_ATTR_AFTER_LAST,