Introduce NL80211_ATTR_TID_CONFIG_TX_RATES in nl80211_attr_tid_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_ATTR_TID_CONFIG_TID attribute. TX bitrate mask values passed in NL80211_ATTR_TX_RATES attribute and NL80211_ATTR_TID_CONFIG_TX_RATES attribute will have types of the TX rate should be applied. 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. NL80211_ATTR_TX_RATES attribute can hold single value at a time, so the TX bitrate configuration can be set one TID at a time.
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 <[email protected]> --- include/net/cfg80211.h | 5 +++++ include/uapi/linux/nl80211.h | 38 ++++++++++++++++++++++++++++++++++++++ net/wireless/nl80211.c | 41 +++++++++++++++++++++++++++++++++++++++-- 3 files changed, 82 insertions(+), 2 deletions(-) diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h index cf4a3f0..713de1e 100644 --- a/include/net/cfg80211.h +++ b/include/net/cfg80211.h @@ -514,6 +514,7 @@ 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), }; /** @@ -526,6 +527,8 @@ 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; @@ -535,6 +538,8 @@ 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 996b4d4..9a6f63e 100644 --- a/include/uapi/linux/nl80211.h +++ b/include/uapi/linux/nl80211.h @@ -4557,6 +4557,18 @@ enum nl80211_tx_power_setting { NL80211_TX_POWER_FIXED, }; +/** + * 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 { NL80211_TID_CONFIG_DEFAULT, NL80211_TID_CONFIG_ENABLE, @@ -4645,6 +4657,25 @@ 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_ATTR_TID_CONFIG_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_ATTR_TID_CONFIG_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_attr_tid_config { __NL80211_ATTR_TID_INVALID, @@ -4655,6 +4686,7 @@ enum nl80211_attr_tid_config { NL80211_ATTR_TID_CONFIG_RETRY_LONG, NL80211_ATTR_TID_CONFIG_AMPDU_CTRL, NL80211_ATTR_TID_CONFIG_RTSCTS_CTRL, + NL80211_ATTR_TID_CONFIG_TX_RATES, /* keep last */ __NL80211_ATTR_TID_CONFIG_AFTER_LAST, @@ -5477,6 +5509,10 @@ 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. @@ -5527,6 +5563,8 @@ 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 cd1e1e8..25ed505 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -292,6 +292,8 @@ static int validate_ie_attr(const struct nlattr *attr, NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE), [NL80211_ATTR_TID_CONFIG_RTSCTS_CTRL] = NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE), + [NL80211_ATTR_TID_CONFIG_TX_RATES] = + NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED), }; const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { @@ -13260,8 +13262,10 @@ static int nl80211_get_ftm_responder_stats(struct sk_buff *skb, static int parse_tid_conf(struct cfg80211_registered_device *rdev, struct nlattr *attrs[], struct ieee80211_tid_cfg *tid_conf, - const u8 *peer) + struct genl_info *info, const u8 *peer) { + int ret; + tid_conf->tid = nla_get_u8(attrs[NL80211_ATTR_TID_CONFIG_TID]); if (attrs[NL80211_ATTR_TID_CONFIG_NOACK]) { if (!wiphy_ext_feature_isset(&rdev->wiphy, @@ -13336,6 +13340,39 @@ static int parse_tid_conf(struct cfg80211_registered_device *rdev, nla_get_u8(attrs[NL80211_ATTR_TID_CONFIG_RTSCTS_CTRL]); } + if (attrs[NL80211_ATTR_TID_CONFIG_TX_RATES]) { + int idx; + + if (!wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_PER_TID_TX_BITRATE_MASK)) + return -EOPNOTSUPP; + + if (peer && + !wiphy_ext_feature_isset(&rdev->wiphy, + NL80211_EXT_FEATURE_PER_STA_TX_BITRATE_MASK)) + return -EOPNOTSUPP; + + idx = NL80211_ATTR_TID_CONFIG_TX_RATES; + 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; + ret = nl80211_parse_tx_bitrate_mask(info, + tid_conf->mask); + if (ret) { + kfree(tid_conf->mask); + return ret; + } + } else { + tid_conf->mask = NULL; + } + } + return 0; } @@ -13387,7 +13424,7 @@ static int nl80211_set_tid_config(struct sk_buff *skb, return -EINVAL; ret = parse_tid_conf(rdev, attrs, &tid_conf->tid_conf[conf_idx], - tid_conf->peer); + info, tid_conf->peer); if (ret) goto bad_tid_conf; -- 1.9.1
