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.
Signed-off-by: Ashok Raj Nagarajan <arnagara@xxxxxxxxxxxxxxxx>
---
include/net/mac80211.h | 6 ++++++
net/mac80211/cfg.c | 7 +++++++
net/mac80211/driver-ops.c | 21 +++++++++++++++++++++
net/mac80211/driver-ops.h | 5 +++++
net/mac80211/trace.h | 27 +++++++++++++++++++++++++++
5 files changed, 66 insertions(+)
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index be30b05..70c02d7 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -1755,6 +1755,8 @@ struct ieee80211_sta_rates {
* This is defined by the spec (IEEE 802.11-2012 section 8.3.2.2 NOTE 2).
* @support_p2p_ps: indicates whether the STA supports P2P PS mechanism or not.
* @max_rc_amsdu_len: Maximum A-MSDU size in bytes recommended by rate control.
+ * @txpwr: indicates the tx power, in dBm, to be used when sending data frames
+ * to the STA. Value of 0 means, automatic (default) tx power.
* @txq: per-TID data TX queues (if driver uses the TXQ abstraction)
*/
struct ieee80211_sta {
@@ -1777,6 +1779,7 @@ struct ieee80211_sta {
u16 max_amsdu_len;
bool support_p2p_ps;
u16 max_rc_amsdu_len;
+ u8 txpwr;
struct ieee80211_txq *txq[IEEE80211_NUM_TIDS];
@@ -3484,6 +3487,9 @@ 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 0c12e40..d439854 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -1181,6 +1181,13 @@ static int sta_apply_parameters(struct ieee80211_local *local,
if (params->listen_interval >= 0)
sta->listen_interval = params->listen_interval;
+ if (params->txpwr >= 0) {
+ sta->sta.txpwr = MBM_TO_DBM(params->txpwr);
+ 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 c258f10..638480c 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 184473c..59b2f28 100644
--- a/net/mac80211/driver-ops.h
+++ b/net/mac80211/driver-ops.h
@@ -539,6 +539,11 @@ 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 77e4c53..78c37e9 100644
--- a/net/mac80211/trace.h
+++ b/net/mac80211/trace.h
@@ -823,6 +823,33 @@ 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(u8, txpwr)
+ ),
+
+ TP_fast_assign(
+ LOCAL_ASSIGN;
+ VIF_ASSIGN;
+ STA_ASSIGN;
+ __entry->txpwr = sta->txpwr;
+ ),
+
+ TP_printk(
+ LOCAL_PR_FMT VIF_PR_FMT STA_PR_FMT " txpwr: %d",
+ LOCAL_PR_ARG, VIF_PR_ARG, STA_PR_ARG, __entry->txpwr
+ )
+);
+
TRACE_EVENT(drv_sta_rc_update,
TP_PROTO(struct ieee80211_local *local,
struct ieee80211_sub_if_data *sdata,
--
1.9.1
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