The configured tx power is often limited by hardware capabilities, channel settings, antenna configuration, etc.
Signed-off-by: Felix Fietkau <[email protected]> --- include/net/mac80211.h | 5 +++++ net/mac80211/cfg.c | 3 +++ net/mac80211/driver-ops.h | 14 ++++++++++++++ net/mac80211/trace.h | 27 +++++++++++++++++++++++++++ 4 files changed, 49 insertions(+) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 0ad1f47..41b0e60 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -2838,6 +2838,9 @@ enum ieee80211_roc_type { * @get_expected_throughput: extract the expected throughput towards the * specified station. The returned value is expressed in Kbps. It returns 0 * if the RC algorithm does not have proper data to provide. + * + * @get_txpower: get current maximum tx power (in dBm) based on configuration + * and hardware limits. */ struct ieee80211_ops { void (*tx)(struct ieee80211_hw *hw, @@ -3039,6 +3042,8 @@ struct ieee80211_ops { int (*join_ibss)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); void (*leave_ibss)(struct ieee80211_hw *hw, struct ieee80211_vif *vif); u32 (*get_expected_throughput)(struct ieee80211_sta *sta); + int (*get_txpower)(struct ieee80211_hw *hw, struct ieee80211_vif *vif, + int *dbm); }; /** diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index fb6a150..df38198 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -2081,6 +2081,9 @@ static int ieee80211_get_tx_power(struct wiphy *wiphy, struct ieee80211_local *local = wiphy_priv(wiphy); struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev); + if (local->ops->get_txpower) + return drv_get_txpower(local, sdata, dbm); + if (!local->use_chanctx) *dbm = local->hw.conf.power_level; else diff --git a/net/mac80211/driver-ops.h b/net/mac80211/driver-ops.h index 196d48c..78c93de 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -1238,4 +1238,18 @@ static inline u32 drv_get_expected_throughput(struct ieee80211_local *local, return ret; } +static inline int drv_get_txpower(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, int *dbm) +{ + int ret; + + if (!local->ops->get_txpower) + return -EOPNOTSUPP; + + ret = local->ops->get_txpower(&local->hw, &sdata->vif, dbm); + trace_drv_get_txpower(local, sdata, *dbm, ret); + + return ret; +} + #endif /* __MAC80211_DRIVER_OPS */ diff --git a/net/mac80211/trace.h b/net/mac80211/trace.h index 38fae7e..c4150d1 100644 --- a/net/mac80211/trace.h +++ b/net/mac80211/trace.h @@ -2106,6 +2106,33 @@ TRACE_EVENT(drv_channel_switch_beacon, ) ); +TRACE_EVENT(drv_get_txpower, + TP_PROTO(struct ieee80211_local *local, + struct ieee80211_sub_if_data *sdata, + int dbm, int ret), + + TP_ARGS(local, sdata, dbm, ret), + + TP_STRUCT__entry( + LOCAL_ENTRY + SDATA_ENTRY + __field(int, dbm) + __field(int, ret) + ), + + TP_fast_assign( + LOCAL_ASSIGN; + SDATA_ASSIGN; + __entry->dbm = dbm; + __entry->ret = ret; + ), + + TP_printk( + LOCAL_PR_FMT STA_PR_FMT " dbm:%d ret:%d", + LOCAL_PR_ARG, STA_PR_ARG, __entry->dbm, __entry->ret + ) +); + #ifdef CONFIG_MAC80211_MESSAGE_TRACING #undef TRACE_SYSTEM -- 2.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
