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nl80211: put current TX power in interface info

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Many drivers implement reading current TX power (using either cfg80211
or ieee80211 op) but userspace can't get it using nl80211. Right now the
only way to access it is to call some wext ioctl.
Let's put TX power in interface info reply (callback is wdev specific)
just like we do with current channel.
To be consistent (e.g. NL80211_CMD_SET_WIPHY) let's use mBm as na unit.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Rafał Miłecki 2015-08-31 22:59:38 +02:00 committed by Johannes Berg
parent 0edd5faeb0
commit d55d0d598e
1 changed files with 10 additions and 0 deletions
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10
net/wireless/nl80211.c
View file

@ -2404,6 +2404,16 @@ static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flag
}
}
if (rdev->ops->get_tx_power) {
int dbm, ret;
ret = rdev_get_tx_power(rdev, wdev, &dbm);
if (ret == 0 &&
nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL,
DBM_TO_MBM(dbm)))
goto nla_put_failure;
}
if (wdev->ssid_len) {
if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid))
goto nla_put_failure;