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mac80211: store tx power value from user to station 

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@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>
This commit is contained in:
Ashok Raj Nagarajan 2019-03-29 16:19:09 +05:30 committed by Johannes Berg
parent e96d1cd263
commit ba905bf432
5 changed files with 87 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
include/net/mac80211.h
View File

@ -1889,6 +1889,24 @@ struct ieee80211_sta_rates {
} rate[IEEE80211_TX_RATE_TABLE_SIZE];
};
/**
* 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
*
@ -1975,6 +1993,7 @@ 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];
@ -3800,6 +3819,9 @@ 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,

9
net/mac80211/cfg.c
View File

@ -1457,6 +1457,15 @@ 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,

21
net/mac80211/driver-ops.c
View File

@ -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)

5
net/mac80211/driver-ops.h
View File

@ -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);

30
net/mac80211/trace.h
View File

@ -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,