package/kernel/mac80211/patches/337-nl80211-put-current-TX-power-in-interface-info.patch

   1 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <zajec5@gmail.com>
   2 Date: Mon, 31 Aug 2015 22:59:38 +0200
   3 Subject: [PATCH] nl80211: put current TX power in interface info
   4 MIME-Version: 1.0
   5 Content-Type: text/plain; charset=UTF-8
   6 Content-Transfer-Encoding: 8bit
   7
   8 Many drivers implement reading current TX power (using either cfg80211
   9 or ieee80211 op) but userspace can't get it using nl80211. Right now the
  10 only way to access it is to call some wext ioctl.
  11 Let's put TX power in interface info reply (callback is wdev specific)
  12 just like we do with current channel.
  13 To be consistent (e.g. NL80211_CMD_SET_WIPHY) let's use mBm as na unit.
  14
  15 Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
  16 Signed-off-by: Johannes Berg <johannes.berg@intel.com>
  17 ---
  18
  19 --- a/net/wireless/nl80211.c
  20 +++ b/net/wireless/nl80211.c
  21 @@ -2406,6 +2406,16 @@ static int nl80211_send_iface(struct sk_
  22                 }
  23         }
  24
  25 +       if (rdev->ops->get_tx_power) {
  26 +               int dbm, ret;
  27 +
  28 +               ret = rdev_get_tx_power(rdev, wdev, &dbm);
  29 +               if (ret == 0 &&
  30 +                   nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
  31 +                               DBM_TO_MBM(dbm)))
  32 +                       goto nla_put_failure;
  33 +       }
  34 +
  35         if (wdev->ssid_len) {
  36                 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
  37                         goto nla_put_failure;