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authorJohannes Berg <johannes.berg@intel.com>2012-10-24 12:17:18 +0400
committerJohannes Berg <johannes.berg@intel.com>2012-10-30 12:11:34 +0400
commitc8442118ad9cd05cfe3b993f058e70ab25b1009a (patch)
treee9d454ef6461e70cf99de76f9dda52952b665e44 /net/wireless/nl80211.c
parent71fe96bf9db8b117d28de6f9ced606cae2ad9661 (diff)
downloadlinux-c8442118ad9cd05cfe3b993f058e70ab25b1009a.tar.xz
cfg80211: allow per interface TX power setting
The TX power setting is currently per wiphy (hardware device) but with multi-channel capabilities that doesn't make much sense any more. Allow drivers (and mac80211) to advertise support for per-interface TX power configuration. When the TX power is configured for the wiphy, the wdev will be NULL and the driver can still handle that, but when a wdev is given the TX power can be set only for that wdev now. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless/nl80211.c')
-rw-r--r--net/wireless/nl80211.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 879ca620fd6f..87d4670ee53a 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -1585,9 +1585,13 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
}
if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) {
+ struct wireless_dev *txp_wdev = wdev;
enum nl80211_tx_power_setting type;
int idx, mbm = 0;
+ if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER))
+ txp_wdev = NULL;
+
if (!rdev->ops->set_tx_power) {
result = -EOPNOTSUPP;
goto bad_res;
@@ -1607,7 +1611,7 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info)
mbm = nla_get_u32(info->attrs[idx]);
}
- result = rdev_set_tx_power(rdev, type, mbm);
+ result = rdev_set_tx_power(rdev, txp_wdev, type, mbm);
if (result)
goto bad_res;
}