diff options
Diffstat (limited to 'net/mac80211/wext.c')
| -rw-r--r-- | net/mac80211/wext.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c index d2d81b10334..1da81f45674 100644 --- a/net/mac80211/wext.c +++ b/net/mac80211/wext.c @@ -55,6 +55,8 @@ static int ieee80211_ioctl_siwfreq(struct net_device *dev, struct iw_freq *freq, char *extra) { struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev); + struct ieee80211_local *local = sdata->local; + struct ieee80211_channel *chan; if (sdata->vif.type == NL80211_IFTYPE_ADHOC) return cfg80211_ibss_wext_siwfreq(dev, info, freq, extra); @@ -69,17 +71,38 @@ static int ieee80211_ioctl_siwfreq(struct net_device *dev, IEEE80211_STA_AUTO_CHANNEL_SEL; return 0; } else - return ieee80211_set_freq(sdata, + chan = ieee80211_get_channel(local->hw.wiphy, ieee80211_channel_to_frequency(freq->m)); } else { int i, div = 1000000; for (i = 0; i < freq->e; i++) div /= 10; - if (div > 0) - return ieee80211_set_freq(sdata, freq->m / div); - else + if (div <= 0) return -EINVAL; + chan = ieee80211_get_channel(local->hw.wiphy, freq->m / div); } + + if (!chan) + return -EINVAL; + + if (chan->flags & IEEE80211_CHAN_DISABLED) + return -EINVAL; + + /* + * no change except maybe auto -> fixed, ignore the HT + * setting so you can fix a channel you're on already + */ + if (local->oper_channel == chan) + return 0; + + if (sdata->vif.type == NL80211_IFTYPE_STATION) + ieee80211_sta_req_auth(sdata); + + local->oper_channel = chan; + local->oper_channel_type = NL80211_CHAN_NO_HT; + ieee80211_hw_config(local, 0); + + return 0; } |