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cfg80211: implement get_wireless_stats

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By dropping the noise reporting, we can implement
wireless stats in cfg80211. We also make the
handler return NULL if we have no information,
which is possible thanks to the recent wext change.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2009-07-01 21:27:00 +02:00
committed by John W. Linville
parent 9930380f0b
commit 8990646d2f
3 changed files with 61 additions and 68 deletions
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59
net/wireless/wext-compat.c
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@@ -1156,3 +1156,62 @@ int cfg80211_wext_giwrate(struct net_device *dev,
return 0;
}
EXPORT_SYMBOL_GPL(cfg80211_wext_giwrate);
/* Get wireless statistics. Called by /proc/net/wireless and by SIOCGIWSTATS */
struct iw_statistics *cfg80211_wireless_stats(struct net_device *dev)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
struct cfg80211_registered_device *rdev = wiphy_to_dev(wdev->wiphy);
/* we are under RTNL - globally locked - so can use static structs */
static struct iw_statistics wstats;
static struct station_info sinfo;
u8 *addr;
if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION)
return NULL;
if (!rdev->ops->get_station)
return NULL;
addr = wdev->wext.connect.bssid;
if (!addr)
return NULL;
if (rdev->ops->get_station(&rdev->wiphy, dev, addr, &sinfo))
return NULL;
memset(&wstats, 0, sizeof(wstats));
switch (rdev->wiphy.signal_type) {
case CFG80211_SIGNAL_TYPE_MBM:
if (sinfo.filled & STATION_INFO_SIGNAL) {
int sig = sinfo.signal;
wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
wstats.qual.updated |= IW_QUAL_DBM;
wstats.qual.level = sig;
if (sig < -110)
sig = -110;
else if (sig > -40)
sig = -40;
wstats.qual.qual = sig + 110;
break;
}
case CFG80211_SIGNAL_TYPE_UNSPEC:
if (sinfo.filled & STATION_INFO_SIGNAL) {
wstats.qual.updated |= IW_QUAL_LEVEL_UPDATED;
wstats.qual.updated |= IW_QUAL_QUAL_UPDATED;
wstats.qual.level = sinfo.signal;
wstats.qual.qual = sinfo.signal;
break;
}
default:
wstats.qual.updated |= IW_QUAL_LEVEL_INVALID;
wstats.qual.updated |= IW_QUAL_QUAL_INVALID;
}
wstats.qual.updated |= IW_QUAL_NOISE_INVALID;
return &wstats;
}
EXPORT_SYMBOL_GPL(cfg80211_wireless_stats);