package/kernel/mac80211/patches/340-mac80211-add-support-for-driver-tx-power-reporting.patch

   1 From: Felix Fietkau <nbd@openwrt.org>
   2 Date: Wed, 22 Oct 2014 17:55:50 +0200
   3 Subject: [PATCH] mac80211: add support for driver tx power reporting
   4
   5 The configured tx power is often limited by hardware capabilities,
   6 channel settings, antenna configuration, etc.
   7
   8 Signed-off-by: Felix Fietkau <nbd@openwrt.org>
   9 ---
  10
  11 --- a/include/net/mac80211.h
  12 +++ b/include/net/mac80211.h
  13 @@ -2838,6 +2838,9 @@ enum ieee80211_roc_type {
  14   * @get_expected_throughput: extract the expected throughput towards the
  15   *     specified station. The returned value is expressed in Kbps. It returns 0
  16   *     if the RC algorithm does not have proper data to provide.
  17 + *
  18 + * @get_txpower: get current maximum tx power (in dBm) based on configuration
  19 + *     and hardware limits.
  20   */
  21  struct ieee80211_ops {
  22         void (*tx)(struct ieee80211_hw *hw,
  23 @@ -3039,6 +3042,8 @@ struct ieee80211_ops {
  24         int (*join_ibss)(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
  25         void (*leave_ibss)(struct ieee80211_hw *hw, struct ieee80211_vif *vif);
  26         u32 (*get_expected_throughput)(struct ieee80211_sta *sta);
  27 +       int (*get_txpower)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
  28 +                          int *dbm);
  29  };
  30
  31  /**
  32 --- a/net/mac80211/cfg.c
  33 +++ b/net/mac80211/cfg.c
  34 @@ -2081,6 +2081,9 @@ static int ieee80211_get_tx_power(struct
  35         struct ieee80211_local *local = wiphy_priv(wiphy);
  36         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  37
  38 +       if (local->ops->get_txpower)
  39 +               return local->ops->get_txpower(&local->hw, &sdata->vif, dbm);
  40 +
  41         if (!local->use_chanctx)
  42                 *dbm = local->hw.conf.power_level;
  43         else