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authorAshok Raj Nagarajan <arnagara@codeaurora.org>2019-03-29 16:18:21 +0530
committerJohannes Berg <johannes.berg@intel.com>2019-04-26 13:02:11 +0200
commite96d1cd2635c05efdd01b4eafcfc50c22c40751f (patch)
tree713f5f5037e3ce6c1b114e2873e7e94376dd97a2 /net/wireless
parentdbd50a851c50bb95e457c99306eff298afd3d731 (diff)
downloadlinux-e96d1cd2635c05efdd01b4eafcfc50c22c40751f.tar.bz2
cfg80211: Add support to set tx power for a station associated
This patch adds support to set transmit power setting type and transmit power level attributes to NL80211_CMD_SET_STATION in order to facilitate adjusting the transmit power level of a station associated to the AP. The added attributes allow selection of automatic and limited transmit power level, with the level defined in dBm format. Co-developed-by: Balaji Pothunoori <bpothuno@codeaurora.org> Signed-off-by: Ashok Raj Nagarajan <arnagara@codeaurora.org> Signed-off-by: Balaji Pothunoori <bpothuno@codeaurora.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
-rw-r--r--net/wireless/nl80211.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 64f191244c67..0524a6fb84ad 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -331,6 +331,11 @@ const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = {
.len = NL80211_MAX_SUPP_RATES },
[NL80211_ATTR_STA_PLINK_ACTION] =
NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1),
+ [NL80211_ATTR_STA_TX_POWER_SETTING] =
+ NLA_POLICY_RANGE(NLA_U8,
+ NL80211_TX_POWER_AUTOMATIC,
+ NL80211_TX_POWER_FIXED),
+ [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 },
[NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 },
[NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ },
[NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY,
@@ -5420,6 +5425,36 @@ static int nl80211_set_station_tdls(struct genl_info *info,
return nl80211_parse_sta_wme(info, params);
}
+static int nl80211_parse_sta_txpower_setting(struct genl_info *info,
+ struct station_parameters *params)
+{
+ struct cfg80211_registered_device *rdev = info->user_ptr[0];
+ int idx;
+
+ if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) {
+ if (!rdev->ops->set_tx_power ||
+ !wiphy_ext_feature_isset(&rdev->wiphy,
+ NL80211_EXT_FEATURE_STA_TX_PWR))
+ return -EOPNOTSUPP;
+
+ idx = NL80211_ATTR_STA_TX_POWER_SETTING;
+ params->txpwr.type = nla_get_u8(info->attrs[idx]);
+
+ if (params->txpwr.type == NL80211_TX_POWER_LIMITED) {
+ idx = NL80211_ATTR_STA_TX_POWER;
+
+ if (info->attrs[idx])
+ params->txpwr.power =
+ nla_get_s16(info->attrs[idx]);
+ else
+ return -EINVAL;
+ }
+ params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER;
+ }
+
+ return 0;
+}
+
static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
{
struct cfg80211_registered_device *rdev = info->user_ptr[0];
@@ -5513,6 +5548,10 @@ static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info)
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
return -EOPNOTSUPP;
+ err = nl80211_parse_sta_txpower_setting(info, &params);
+ if (err)
+ return err;
+
/* Include parameters for TDLS peer (will check later) */
err = nl80211_set_station_tdls(info, &params);
if (err)
@@ -5650,6 +5689,10 @@ static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info)
NL80211_EXT_FEATURE_AIRTIME_FAIRNESS))
return -EOPNOTSUPP;
+ err = nl80211_parse_sta_txpower_setting(info, &params);
+ if (err)
+ return err;
+
err = nl80211_parse_sta_channel_info(info, &params);
if (err)
return err;