From 61609bc0e4d3bc677ecdccf216a0a77563f52457 Mon Sep 17 00:00:00 2001 From: Michael Buesch Date: Thu, 20 Sep 2007 22:06:39 +0200 Subject: [PATCH] [MAC80211]: Add support for setting TX power and radio status This adds support for disabling the radio and setting the TXpower through wext. This also fixes the prism TXpower ioctl (It always overwrote the TXpower value in ieee80211_hw_config()) Signed-off-by: Michael Buesch Signed-off-by: John W. Linville Signed-off-by: David S. Miller --- net/mac80211/ieee80211.c | 7 ++++++- net/mac80211/ieee80211_ioctl.c | 34 +++++++++++++++++++++++++++++++++- 2 files changed, 39 insertions(+), 2 deletions(-) diff --git a/net/mac80211/ieee80211.c b/net/mac80211/ieee80211.c index 4229d150e7..23853331e8 100644 --- a/net/mac80211/ieee80211.c +++ b/net/mac80211/ieee80211.c @@ -704,7 +704,12 @@ int ieee80211_hw_config(struct ieee80211_local *local) local->hw.conf.channel = chan->chan; local->hw.conf.channel_val = chan->val; - local->hw.conf.power_level = chan->power_level; + if (!local->hw.conf.power_level) { + local->hw.conf.power_level = chan->power_level; + } else { + local->hw.conf.power_level = min(chan->power_level, + local->hw.conf.power_level); + } local->hw.conf.freq = chan->freq; local->hw.conf.phymode = mode->mode; local->hw.conf.antenna_max = chan->antenna_max; diff --git a/net/mac80211/ieee80211_ioctl.c b/net/mac80211/ieee80211_ioctl.c index 6ccdde82bd..b4cce441d7 100644 --- a/net/mac80211/ieee80211_ioctl.c +++ b/net/mac80211/ieee80211_ioctl.c @@ -666,6 +666,38 @@ static int ieee80211_ioctl_giwrate(struct net_device *dev, return 0; } +static int ieee80211_ioctl_siwtxpower(struct net_device *dev, + struct iw_request_info *info, + union iwreq_data *data, char *extra) +{ + struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); + bool need_reconfig = 0; + + if ((data->txpower.flags & IW_TXPOW_TYPE) != IW_TXPOW_DBM) + return -EINVAL; + if (data->txpower.flags & IW_TXPOW_RANGE) + return -EINVAL; + if (!data->txpower.fixed) + return -EINVAL; + + if (local->hw.conf.power_level != data->txpower.value) { + local->hw.conf.power_level = data->txpower.value; + need_reconfig = 1; + } + if (local->hw.conf.radio_enabled != !(data->txpower.disabled)) { + local->hw.conf.radio_enabled = !(data->txpower.disabled); + need_reconfig = 1; + } + if (need_reconfig) { + ieee80211_hw_config(local); + /* The return value of hw_config is not of big interest here, + * as it doesn't say that it failed because of _this_ config + * change or something else. Ignore it. */ + } + + return 0; +} + static int ieee80211_ioctl_giwtxpower(struct net_device *dev, struct iw_request_info *info, union iwreq_data *data, char *extra) @@ -1339,7 +1371,7 @@ static const iw_handler ieee80211_handler[] = (iw_handler) ieee80211_ioctl_giwrts, /* SIOCGIWRTS */ (iw_handler) ieee80211_ioctl_siwfrag, /* SIOCSIWFRAG */ (iw_handler) ieee80211_ioctl_giwfrag, /* SIOCGIWFRAG */ - (iw_handler) NULL, /* SIOCSIWTXPOW */ + (iw_handler) ieee80211_ioctl_siwtxpower, /* SIOCSIWTXPOW */ (iw_handler) ieee80211_ioctl_giwtxpower, /* SIOCGIWTXPOW */ (iw_handler) ieee80211_ioctl_siwretry, /* SIOCSIWRETRY */ (iw_handler) ieee80211_ioctl_giwretry, /* SIOCGIWRETRY */ -- 2.39.5