diff options
| author | Felix Fietkau <nbd@openwrt.org> | 2014-10-26 01:32:53 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2014-11-04 12:15:09 +0300 |
| commit | 5b3dc42b1b0db0264bbbe4ae44c15ab97bfd1e93 (patch) | |
| tree | 3a53814de5743eb3fdf491609a050a417632c9f4 | |
| parent | 0563921abf01a7a38b5f670c3de05dc0b0b8617d (diff) | |
| download | linux-5b3dc42b1b0db0264bbbe4ae44c15ab97bfd1e93.tar.xz | |
mac80211: add support for driver tx power reporting
The configured tx power is often limited by hardware capabilities,
channel settings, antenna configuration, etc.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
[fix tracing compilation]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
| -rw-r--r-- | include/net/mac80211.h | 5 | ||||
| -rw-r--r-- | net/mac80211/cfg.c | 3 | ||||
| -rw-r--r-- | net/mac80211/driver-ops.h | 14 | ||||
| -rw-r--r-- | net/mac80211/trace.h | 27 |
4 files changed, 49 insertions, 0 deletions
diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 1614b2fc3bf6..03edbf6f6230 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -2857,6 +2857,9 @@ 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, @@ -3065,6 +3068,8 @@ 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 fbcc209687c8..b9659b8b70f8 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -2133,6 +2133,9 @@ 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 3df28e0fa045..d1e128e5db41 100644 --- a/net/mac80211/driver-ops.h +++ b/net/mac80211/driver-ops.h @@ -1279,4 +1279,18 @@ 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 976606aebac9..aeeace5ba47b 100644 --- a/net/mac80211/trace.h +++ b/net/mac80211/trace.h @@ -2150,6 +2150,33 @@ DEFINE_EVENT(local_sdata_evt, drv_post_channel_switch, TP_ARGS(local, sdata) ); +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 + VIF_ENTRY + __field(int, dbm) + __field(int, ret) + ), + + TP_fast_assign( + LOCAL_ASSIGN; + VIF_ASSIGN; + __entry->dbm = dbm; + __entry->ret = ret; + ), + + TP_printk( + LOCAL_PR_FMT VIF_PR_FMT " dbm:%d ret:%d", + LOCAL_PR_ARG, VIF_PR_ARG, __entry->dbm, __entry->ret + ) +); + #ifdef CONFIG_MAC80211_MESSAGE_TRACING #undef TRACE_SYSTEM |