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[PATCH] softmac: return -EAGAIN from getscan while scanning 

Below patch was developed after discussion with Daniel Drake who
mentioned to me that wireless tools expect an EAGAIN return from getscan
so that they can wait for the scan to finish before printing out the
results.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
johannes@sipsolutions.net 2006-04-11 10:58:06 +02:00 committed by John W. Linville
parent b79367a5ea
commit ba2f8c1875
1 changed files with 10 additions and 0 deletions
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10
net/ieee80211/softmac/ieee80211softmac_wx.c
View File

@ -41,13 +41,23 @@ ieee80211softmac_wx_trigger_scan(struct net_device *net_dev,
EXPORT_SYMBOL_GPL(ieee80211softmac_wx_trigger_scan);
/* if we're still scanning, return -EAGAIN so that userspace tools
* can get the complete scan results, otherwise return 0. */
int
ieee80211softmac_wx_get_scan_results(struct net_device *net_dev,
struct iw_request_info *info,
union iwreq_data *data,
char *extra)
{
unsigned long flags;
struct ieee80211softmac_device *sm = ieee80211_priv(net_dev);
spin_lock_irqsave(&sm->lock, flags);
if (sm->scanning) {
spin_unlock_irqrestore(&sm->lock, flags);
return -EAGAIN;
}
spin_unlock_irqrestore(&sm->lock, flags);
return ieee80211_wx_get_scan(sm->ieee, info, data, extra);
}
EXPORT_SYMBOL_GPL(ieee80211softmac_wx_get_scan_results);