Introduce NL80211_TID_CONFIG_ATTR_TX_RATES in nl80211_tid_attr_config
to accept data TID specific TX bitrate configuration
through NL80211_CMD_SET_TID_CONFIG command. TID for which the
this configuration is to be applied is passed in
NL80211_TID_CONFIG_ATTR_TID attribute. TX bitrate mask values passed
in NL80211_ATTR_TX_RATES attribute and NL80211_TID_CONFIG_ATTR_TX_RATES
attribute will have types of the TX rate should be applied. This uses
nl80211_parse_tx_bitrate_mask to validate and calculate the bitrate
mask. 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_TX_BITRATE_MASK and supporting per-STA data TID
TX bitrate configuration should advertise
NL80211_EXT_FEATURE_PER_STA_TX_BITRATE_MASK.
Signed-off-by: Tamizh chelvam <tamizhr@xxxxxxxxxxxxxx>
---
include/net/cfg80211.h | 5 +++
include/uapi/linux/nl80211.h | 39 +++++++++++++++++++++
net/wireless/nl80211.c | 79 +++++++++++++++++++++++++++++++++---------
3 files changed, 106 insertions(+), 17 deletions(-)
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index deeb1c1..69f4769 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -601,6 +601,7 @@ enum ieee80211_tid_conf_mask {
IEEE80211_TID_CONF_RETRY = BIT(1),
IEEE80211_TID_CONF_AMPDU = BIT(2),
IEEE80211_TID_CONF_RTSCTS = BIT(3),
+ IEEE80211_TID_CONF_TX_BITRATE = BIT(4),
};
/**
@@ -613,6 +614,8 @@ enum ieee80211_tid_conf_mask {
* @retry_short: retry count value
* @ampdu: Enable/Disable aggregation
* @rtscts: Enable/Disable RTS/CTS
+ * @txrate_type: TX bitrate mask type
+ * @mask: bitrate to be applied for the TID
*/
struct ieee80211_tid_cfg {
u8 tid;
@@ -622,6 +625,8 @@ struct ieee80211_tid_cfg {
int retry_short;
u8 ampdu;
u8 rtscts;
+ enum nl80211_tx_rate_setting txrate_type;
+ struct cfg80211_bitrate_mask *mask;
};
/**
diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index f75f243..034d8ff 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -4696,6 +4696,18 @@ enum nl80211_tx_power_setting {
};
/**
+ * 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 - TID config state
* @NL80211_TID_CONFIG_DEFAULT: Default config for the TID. This is to
* notify driver to reset the previous config and use vif specific
@@ -4791,6 +4803,25 @@ enum nl80211_tid_config {
* NL80211_EXT_FEATURE_PER_TID_RTSCTS_CTRL and supporting per station
* RTS_CTS configuration should advertise
* NL80211_EXT_FEATURE_PER_STA_RTSCTS_CTRL.
+ * @NL80211_TID_CONFIG_ATTR_TX_RATES: Data frame TX rate mask should be applied
+ * with the parameters passed through %NL80211_ATTR_TX_RATES. This
+ * configuration is per TID, TID is specified with
+ * %NL80211_TID_CONFIG_ATTR_TID.
+ * 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. This attribute will be useful to notfiy the driver that what
+ * type of txrate should be applied(%enum enum nl80211_tx_rate_setting)
+ * for the connected station (%NL80211_ATTR_MAC),
+ * Station specific retry 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_TX_BITRATE_MASK and supporting per station
+ * TX bitrate configuration should advertise
+ * NL80211_EXT_FEATURE_PER_STA_TX_BITRATE_MASK.
*/
enum nl80211_tid_config_attr {
__NL80211_TID_CONFIG_ATTR_INVALID,
@@ -4801,6 +4832,8 @@ enum nl80211_tid_config_attr {
NL80211_TID_CONFIG_ATTR_RETRY_LONG,
NL80211_TID_CONFIG_ATTR_AMPDU_CTRL,
NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL,
+ NL80211_TID_CONFIG_ATTR_TX_RATES_TYPE,
+ NL80211_TID_CONFIG_ATTR_TX_RATES,
/* keep last */
__NL80211_TID_CONFIG_ATTR_AFTER_LAST,
@@ -5634,6 +5667,10 @@ enum nl80211_feature_flags {
* RTS_CTS control(enable/disable).
* @NL80211_EXT_FEATURE_PER_STA_RTSCTS_CTRL: Driver supports STA specific
* RTS_CTS control(enable/disable).
+ * @NL80211_EXT_FEATURE_PER_TID_TX_BITRATE_MASK: Driver supports TID specific
+ * TX bitrate configuration.
+ * @NL80211_EXT_FEATURE_PER_STA_TX_BITRATE_MASK: Driver supports STA specific
+ * TX bitrate configuration.
*
* @NUM_NL80211_EXT_FEATURES: number of extended features.
* @MAX_NL80211_EXT_FEATURES: highest extended feature index.
@@ -5688,6 +5725,8 @@ enum nl80211_ext_feature_index {
NL80211_EXT_FEATURE_PER_STA_AMPDU_CTRL,
NL80211_EXT_FEATURE_PER_TID_RTSCTS_CTRL,
NL80211_EXT_FEATURE_PER_STA_RTSCTS_CTRL,
+ NL80211_EXT_FEATURE_PER_TID_TX_BITRATE_MASK,
+ NL80211_EXT_FEATURE_PER_STA_TX_BITRATE_MASK,
/* add new features before the definition below */
NUM_NL80211_EXT_FEATURES,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index abce915..81af51b 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -321,6 +321,18 @@ static int validate_ie_attr(const struct nlattr *attr,
NLA_POLICY_RANGE(NLA_U8, 1, 20),
};
+static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
+ [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
+ .len = NL80211_MAX_SUPP_RATES },
+ [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
+ .len = NL80211_MAX_SUPP_HT_RATES },
+ [NL80211_TXRATE_VHT] = {
+ .type = NLA_EXACT_LEN_WARN,
+ .len = sizeof(struct nl80211_txrate_vht),
+ },
+ [NL80211_TXRATE_GI] = { .type = NLA_U8 },
+};
+
static const struct nla_policy
nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = {
[NL80211_TID_CONFIG_ATTR_TID] = { .type = NLA_U8 },
@@ -333,6 +345,10 @@ static int validate_ie_attr(const struct nlattr *attr,
NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] =
NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE),
+ [NL80211_TID_CONFIG_ATTR_TX_RATES_TYPE] =
+ NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED),
+ [NL80211_TID_CONFIG_ATTR_TX_RATES] =
+ NLA_POLICY_NESTED(nl80211_txattr_policy),
};
const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
@@ -4240,19 +4256,9 @@ static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband,
return true;
}
-static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = {
- [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY,
- .len = NL80211_MAX_SUPP_RATES },
- [NL80211_TXRATE_HT] = { .type = NLA_BINARY,
- .len = NL80211_MAX_SUPP_HT_RATES },
- [NL80211_TXRATE_VHT] = {
- .type = NLA_EXACT_LEN_WARN,
- .len = sizeof(struct nl80211_txrate_vht),
- },
- [NL80211_TXRATE_GI] = { .type = NLA_U8 },
-};
-
static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
+ struct nlattr *attrs[],
+ enum nl80211_attrs attr,
struct cfg80211_bitrate_mask *mask)
{
struct nlattr *tb[NL80211_TXRATE_MAX + 1];
@@ -4283,14 +4289,14 @@ static int nl80211_parse_tx_bitrate_mask(struct genl_info *info,
}
/* if no rates are given set it back to the defaults */
- if (!info->attrs[NL80211_ATTR_TX_RATES])
+ if (!attrs[attr])
goto out;
/* The nested attribute uses enum nl80211_band as the index. This maps
* directly to the enum nl80211_band values used in cfg80211.
*/
BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8);
- nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) {
+ nla_for_each_nested(tx_rates, attrs[attr], rem) {
enum nl80211_band band = nla_type(tx_rates);
int err;
@@ -4766,7 +4772,9 @@ static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info)
return -EINVAL;
if (info->attrs[NL80211_ATTR_TX_RATES]) {
- err = nl80211_parse_tx_bitrate_mask(info, ¶ms.beacon_rate);
+ err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
+ NL80211_ATTR_TX_RATES,
+ ¶ms.beacon_rate);
if (err)
return err;
@@ -10510,7 +10518,8 @@ static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb,
if (!rdev->ops->set_bitrate_mask)
return -EOPNOTSUPP;
- err = nl80211_parse_tx_bitrate_mask(info, &mask);
+ err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
+ NL80211_ATTR_TX_RATES, &mask);
if (err)
return err;
@@ -11105,7 +11114,9 @@ static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info)
}
if (info->attrs[NL80211_ATTR_TX_RATES]) {
- err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate);
+ err = nl80211_parse_tx_bitrate_mask(info, info->attrs,
+ NL80211_ATTR_TX_RATES,
+ &setup.beacon_rate);
if (err)
return err;
@@ -13914,6 +13925,40 @@ static int parse_tid_conf(struct cfg80211_registered_device *rdev,
nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]);
}
+ if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATES_TYPE]) {
+ int idx;
+ enum nl80211_attrs attr;
+
+ err = nl80211_check_tid_config_support(rdev, extack, peer,
+ attrs[NL80211_TID_CONFIG_ATTR_TX_RATES_TYPE],
+ NL80211_EXT_FEATURE_PER_TID_TX_BITRATE_MASK,
+ NL80211_EXT_FEATURE_PER_STA_TX_BITRATE_MASK);
+ if (err)
+ return err;
+
+ idx = NL80211_TID_CONFIG_ATTR_TX_RATES_TYPE;
+ tid_conf->txrate_type = nla_get_u8(attrs[idx]);
+
+ tid_conf->tid_conf_mask |= IEEE80211_TID_CONF_TX_BITRATE;
+ if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) {
+ tid_conf->mask =
+ kzalloc(sizeof(struct cfg80211_bitrate_mask),
+ GFP_KERNEL);
+ if (!tid_conf->mask)
+ return -ENOMEM;
+
+ attr = (enum nl80211_attrs) NL80211_TID_CONFIG_ATTR_TX_RATES;
+ err = nl80211_parse_tx_bitrate_mask(info, attrs, attr,
+ tid_conf->mask);
+ if (err) {
+ kfree(tid_conf->mask);
+ return err;
+ }
+ } else {
+ tid_conf->mask = NULL;
+ }
+ }
+
return 0;
}
--
1.7.9.5
