From 98d2ff8bec82fc35fe2008a187a5fef9241dab10 Mon Sep 17 00:00:00 2001 From: Juuso Oikarinen Date: Wed, 23 Jun 2010 12:12:38 +0300 Subject: nl80211: Add option to adjust transmit power This patch adds transmit power setting type and transmit power level attributes to NL80211_CMD_SET_WIPHY in order to facilitate adjusting of the transmit power level of the device. The added attributes allow selection of automatic, limited or fixed transmit power level, with the level definable in signed mBm format. Signed-off-by: Juuso Oikarinen Signed-off-by: John W. Linville --- net/wireless/nl80211.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'net') diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index 41529aca794..a999fc15462 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -153,6 +153,9 @@ static const struct nla_policy nl80211_policy[NL80211_ATTR_MAX+1] = { [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, + + [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, + [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, }; /* policy for the attributes */ @@ -869,6 +872,34 @@ static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) goto bad_res; } + if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { + enum nl80211_tx_power_setting type; + int idx, mbm = 0; + + if (!rdev->ops->set_tx_power) { + return -EOPNOTSUPP; + goto bad_res; + } + + idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; + type = nla_get_u32(info->attrs[idx]); + + if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && + (type != NL80211_TX_POWER_AUTOMATIC)) { + result = -EINVAL; + goto bad_res; + } + + if (type != NL80211_TX_POWER_AUTOMATIC) { + idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; + mbm = nla_get_u32(info->attrs[idx]); + } + + result = rdev->ops->set_tx_power(&rdev->wiphy, type, mbm); + if (result) + goto bad_res; + } + changed = 0; if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { -- cgit v1.2.3-70-g09d2