Introduce NL80211_TID_ATTR_CONFIG_RTSCTS_CTRL in nl80211_attr_tid_config
to accept TID specific RTS_CTS enable/disable configuration
through NL80211_CMD_SET_TID_CONFIG command. TID for which the
RTS_CTS control configuration is to be applied is passed in
NL80211_TID_ATTR_CONFIG_TID attribute. When the user-space wants this
configuration peer specific rather than being applied for all the
connected stations, MAC address of the peer can be passed in
NL80211_ATTR_MAC attribute.
Driver supporting this feature should advertise
NL80211_EXT_FEATURE_PER_TID_RTSCTS_CTRL and supporting per-STA data TID
RTS_CTS configuration should advertise NL80211_EXT_FEATURE_PER_STA_RTSCTS_CTRL.
Signed-off-by: Tamizh chelvam <tamizhr@xxxxxxxxxxxxxx>
---
include/net/cfg80211.h | 3 +++
include/uapi/linux/nl80211.h | 22 ++++++++++++++++++++++
net/wireless/nl80211.c | 27 +++++++++++++++++++++++++++
3 files changed, 52 insertions(+)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index d2814e8..1b875d8 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -529,6 +529,7 @@ enum ieee80211_tid_conf_mask {
IEEE80211_TID_CONF_NOACK = BIT(0),
IEEE80211_TID_CONF_RETRY = BIT(1),
IEEE80211_TID_CONF_AMPDU = BIT(2),
+ IEEE80211_TID_CONF_RTSCTS = BIT(3),
};
/**
@@ -540,6 +541,7 @@ enum ieee80211_tid_conf_mask {
* @retry_long: retry count value
* @retry_short: retry count value
* @ampdu: Enable/Disable aggregation
+ * @rtscts: Enable/Disable RTS/CTS
*/
struct ieee80211_tid_cfg {
u8 tid;
@@ -548,6 +550,7 @@ struct ieee80211_tid_cfg {
int retry_long;
int retry_short;
u8 ampdu;
+ u8 rtscts;
};
/**
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 465dbc6..df4e07d 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -4727,6 +4727,21 @@ enum nl80211_tid_config {
* NL80211_EXT_FEATURE_PER_TID_AMPDU_CTRL and supporting per station
* aggregation configuration should advertise
* NL80211_EXT_FEATURE_PER_STA_AMPDU_CTRL.
+ * @NL80211_TID_ATTR_CONFIG_RTSCTS_CTRL: Enable/Disable RTS_CTS for the TID
+ * specified in %%NL80211_TID_ATTR_CONFIG_TID. It is u8 type, if the
+ * peer MAC address is passed in %NL80211_ATTR_MAC, then this
+ * configuration is applied to the data frame for the tid to that
+ * connected station.
+ * Station specific RTS_CTS configuration is valid only for STA's
+ * current connection. i.e. the configuration will be reset to default when
+ * the station connects back after disconnection/roaming.
+ * when user-space does not include %NL80211_ATTR_MAC, this configuration
+ * should be treated as per-netdev configuration. This configuration will
+ * be cleared when the interface goes down and on the disconnection from a
+ * BSS. Driver supporting this feature should advertise
+ * NL80211_EXT_FEATURE_PER_TID_RTSCTS_CTRL and supporting per station
+ * RTS_CTS configuration should advertise
+ * NL80211_EXT_FEATURE_PER_STA_RTSCTS_CTRL.
*/
enum nl80211_tid_attr_config {
__NL80211_TID_ATTR_INVALID,
@@ -4736,6 +4751,7 @@ enum nl80211_tid_attr_config {
NL80211_TID_ATTR_CONFIG_RETRY_SHORT,
NL80211_TID_ATTR_CONFIG_RETRY_LONG,
NL80211_TID_ATTR_CONFIG_AMPDU_CTRL,
+ NL80211_TID_ATTR_CONFIG_RTSCTS_CTRL,
/* keep last */
__NL80211_TID_ATTR_CONFIG_AFTER_LAST,
@@ -5565,6 +5581,10 @@ enum nl80211_feature_flags {
* aggregation control(enable/disable).
* @NL80211_EXT_FEATURE_PER_STA_AMPDU_CTRL: Driver supports per STA
* specific TID aggregation control(enable/disable).
+ * @NL80211_EXT_FEATURE_PER_TID_RTSCTS_CTRL: Driver supports TID specific
+ * RTS_CTS control(enable/disable).
+ * @NL80211_EXT_FEATURE_PER_STA_RTSCTS_CTRL: Driver supports STA specific
+ * RTS_CTS control(enable/disable).
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
@@ -5617,6 +5637,8 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_PER_STA_RETRY_CONFIG,
NL80211_EXT_FEATURE_PER_TID_AMPDU_CTRL,
NL80211_EXT_FEATURE_PER_STA_AMPDU_CTRL,
+ NL80211_EXT_FEATURE_PER_TID_RTSCTS_CTRL,
+ NL80211_EXT_FEATURE_PER_STA_RTSCTS_CTRL,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index a8982de..370c483 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -291,6 +291,8 @@ static int validate_ie_attr(const struct nlattr *attr,
[NL80211_TID_ATTR_CONFIG_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 0),
[NL80211_TID_ATTR_CONFIG_AMPDU_CTRL] =
NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
+ [NL80211_TID_ATTR_CONFIG_RTSCTS_CTRL] =
+ NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
};
const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
@@ -13686,6 +13688,31 @@ static int parse_tid_conf(struct cfg80211_registered_device *rdev,
tid_conf->ampdu =
nla_get_u8(attrs[NL80211_TID_ATTR_CONFIG_AMPDU_CTRL]);
}
+
+ if (attrs[NL80211_TID_ATTR_CONFIG_RTSCTS_CTRL]) {
+ if (!wiphy_ext_feature_isset(&rdev->wiphy,
+ NL80211_EXT_FEATURE_PER_TID_RTSCTS_CTRL)) {
+ NL_SET_ERR_MSG_ATTR(extack,
+ attrs[NL80211_TID_ATTR_CONFIG_RTSCTS_CTRL],
+ "TID specific configuration not "
+ "supported");
+ return -ENOTSUPP;
+ }
+
+ if (peer && !wiphy_ext_feature_isset(&rdev->wiphy,
+ NL80211_EXT_FEATURE_PER_STA_RTSCTS_CTRL)) {
+ NL_SET_ERR_MSG_ATTR(extack,
+ attrs[NL80211_TID_ATTR_CONFIG_RTSCTS_CTRL],
+ "peer specfic TID configuration not "
+ "supported");
+ return -ENOTSUPP;
+ }
+
+ tid_conf->tid_conf_mask |= IEEE80211_TID_CONF_RTSCTS;
+ tid_conf->rtscts =
+ nla_get_u8(attrs[NL80211_TID_ATTR_CONFIG_RTSCTS_CTRL]);
+ }
+
return 0;
}
--
1.7.9.5
