From: Ashok Raj Nagarajan <arnagara@xxxxxxxxxxxxxx>
This patch introduce a new driver callback drv_sta_set_txpwr. This API will
copy the transmit power value passed from user space and call the driver
callback to set the tx power for the station.
Co-developed-by: Balaji Pothunoori <bpothuno@xxxxxxxxxxxxxx>
Signed-off-by: Ashok Raj Nagarajan <arnagara@xxxxxxxxxxxxxx>
Signed-off-by: Balaji Pothunoori <bpothuno@xxxxxxxxxxxxxx>
---
v2: add txpwr structure
added tx power set type in trace event
v3: updated kernel-doc for ieee80211_sta_txpwr
structure and rebased
include/net/mac80211.h | 22 ++++++++++++++++++++++
net/mac80211/cfg.c | 9 +++++++++
net/mac80211/driver-ops.c | 21 +++++++++++++++++++++
net/mac80211/driver-ops.h | 5 +++++
net/mac80211/trace.h | 30 ++++++++++++++++++++++++++++++
5 files changed, 87 insertions(+)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 97aed7b..74aad69 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1884,6 +1884,24 @@ struct ieee80211_sta_rates {
};
/**
+ * struct ieee80211_sta_txpwr - station txpower configuration
+ *
+ * Used to configure txpower for station.
+ *
+ * @power: indicates the tx power, in dBm, to be used when sending data frames
+ * to the STA.
+ * @type: In particular if TPC %type is NL80211_TX_POWER_LIMITED then tx power
+ * will be less than or equal to specified from userspace, whereas if TPC
+ * %type is NL80211_TX_POWER_AUTOMATIC then it indicates default tx power.
+ * NL80211_TX_POWER_FIXED is not a valid configuration option for
+ * per peer TPC.
+ */
+struct ieee80211_sta_txpwr {
+ s16 power;
+ enum nl80211_tx_power_setting type;
+};
+
+/**
* struct ieee80211_sta - station table entry
*
* A station table entry represents a station we are possibly
@@ -1969,6 +1987,7 @@ struct ieee80211_sta {
bool support_p2p_ps;
u16 max_rc_amsdu_len;
u16 max_tid_amsdu_len[IEEE80211_NUM_TIDS];
+ struct ieee80211_sta_txpwr txpwr;
struct ieee80211_txq *txq[IEEE80211_NUM_TIDS + 1];
@@ -3785,6 +3804,9 @@ struct ieee80211_ops {
#endif
void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
enum sta_notify_cmd, struct ieee80211_sta *sta);
+ int (*sta_set_txpwr)(struct ieee80211_hw *hw,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta);
int (*sta_state)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
enum ieee80211_sta_state old_state,
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index d65aa01..6a8b4a4 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1417,6 +1417,15 @@ static int sta_apply_parameters(struct ieee80211_local *local,
if (params->listen_interval >= 0)
sta->listen_interval = params->listen_interval;
+ if (params->sta_modify_mask & STATION_PARAM_APPLY_STA_TXPOWER) {
+ sta->sta.txpwr.type = params->txpwr.type;
+ if (params->txpwr.type == NL80211_TX_POWER_LIMITED)
+ sta->sta.txpwr.power = params->txpwr.power;
+ ret = drv_sta_set_txpwr(local, sdata, sta);
+ if (ret)
+ return ret;
+ }
+
if (params->supported_rates) {
ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
sband, params->supported_rates,
diff --git a/net/mac80211/driver-ops.c b/net/mac80211/driver-ops.c
index bb886e7..839c002 100644
--- a/net/mac80211/driver-ops.c
+++ b/net/mac80211/driver-ops.c
@@ -138,6 +138,27 @@ int drv_sta_state(struct ieee80211_local *local,
return ret;
}
+__must_check
+int drv_sta_set_txpwr(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta)
+{
+ int ret = -EOPNOTSUPP;
+
+ might_sleep();
+
+ sdata = get_bss_sdata(sdata);
+ if (!check_sdata_in_driver(sdata))
+ return -EIO;
+
+ trace_drv_sta_set_txpwr(local, sdata, &sta->sta);
+ if (local->ops->sta_set_txpwr)
+ ret = local->ops->sta_set_txpwr(&local->hw, &sdata->vif,
+ &sta->sta);
+ trace_drv_return_int(local, ret);
+ return ret;
+}
+
void drv_sta_rc_update(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta, u32 changed)
diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h
index ba3c07b..2cc5bb2 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -529,6 +529,11 @@ int drv_sta_state(struct ieee80211_local *local,
enum ieee80211_sta_state old_state,
enum ieee80211_sta_state new_state);
+__must_check
+int drv_sta_set_txpwr(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct sta_info *sta);
+
void drv_sta_rc_update(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
struct ieee80211_sta *sta, u32 changed);
diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h
index 35ea0dc..c86e42a 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -828,6 +828,36 @@ TRACE_EVENT(drv_sta_state,
)
);
+TRACE_EVENT(drv_sta_set_txpwr,
+ TP_PROTO(struct ieee80211_local *local,
+ struct ieee80211_sub_if_data *sdata,
+ struct ieee80211_sta *sta),
+
+ TP_ARGS(local, sdata, sta),
+
+ TP_STRUCT__entry(
+ LOCAL_ENTRY
+ VIF_ENTRY
+ STA_ENTRY
+ __field(s16, txpwr)
+ __field(u8, type)
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ VIF_ASSIGN;
+ STA_ASSIGN;
+ __entry->txpwr = sta->txpwr.power;
+ __entry->type = sta->txpwr.type;
+ ),
+
+ TP_printk(
+ LOCAL_PR_FMT VIF_PR_FMT STA_PR_FMT " txpwr: %d type %d",
+ LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG,
+ __entry->txpwr, __entry->type
+ )
+);
+
TRACE_EVENT(drv_sta_rc_update,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
--
2.7.4
