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authorJouni Malinen <j@w1.fi>2008-11-22 22:00:31 +0200
committerJohn W. Linville <linville@tuxdriver.com>2008-11-26 09:47:48 -0500
commitbf8c1ac6d81ba8c0e4dc2215f84f5e2a3c8227e8 (patch)
tree9ec81c268e2e16585a4b604237a36fc2728805fb
parent39d1ffee57c7ce02c90ec8e9272df8aa8ddf600f (diff)
nl80211: Change max TX power to be in mBm instead of dBm
In order to be consistent with NL80211_ATTR_POWER_RULE_MAX_EIRP, change NL80211_FREQUENCY_ATTR_MAX_TX_POWER to use mBm and U32 instead of dBm and U8. This is a userspace interface change, but the previous version had not yet been pushed upstream and there are no userspace programs using this yet, so there is justification to get this change in as long as it goes in before the previous version gets out. Signed-off-by: Jouni Malinen <j@w1.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--include/linux/nl80211.h3
-rw-r--r--net/wireless/nl80211.c4
2 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 54d6ebe38e3..e08c8bcfb78 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -508,7 +508,8 @@ enum nl80211_band_attr {
* on this channel in current regulatory domain.
* @NL80211_FREQUENCY_ATTR_RADAR: Radar detection is mandatory
* on this channel in current regulatory domain.
- * @NL80211_FREQUENCY_ATTR_MAX_TX_POWER: Maximum transmission power in dBm.
+ * @NL80211_FREQUENCY_ATTR_MAX_TX_POWER: Maximum transmission power in mBm
+ * (100 * dBm).
*/
enum nl80211_frequency_attr {
__NL80211_FREQUENCY_ATTR_INVALID,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index 2e8464eaaaa..c9141e3df9b 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -198,8 +198,8 @@ static int nl80211_send_wiphy(struct sk_buff *msg, u32 pid, u32 seq, int flags,
if (chan->flags & IEEE80211_CHAN_RADAR)
NLA_PUT_FLAG(msg, NL80211_FREQUENCY_ATTR_RADAR);
- NLA_PUT_U8(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
- chan->max_power);
+ NLA_PUT_U32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER,
+ DBM_TO_MBM(chan->max_power));
nla_nest_end(msg, nl_freq);
}