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net80211: restore interface state check for IEEE80211_IOC_SCAN_REQ ioctl.

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Do not try to start a scan when interface is not running.

How-to-reproduce:
1) ifconfig wlan0 create wlandev urtwn0
2) wlandebug -i wlan0 state
3) ifconfig wlan0 scan
This commit is contained in:
Andriy Voskoboinyk 2016-05-19 22:02:03 +00:00
parent 6dbbec9385
commit f20503faf8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=300237
1 changed files with 5 additions and 0 deletions
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5
sys/net80211/ieee80211_ioctl.c
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@ -2486,6 +2486,11 @@ ieee80211_scanreq(struct ieee80211vap *vap, struct ieee80211_scan_req *sr)
* Otherwise just invoke the scan machinery directly.
*/
IEEE80211_LOCK(ic);
if (ic->ic_nrunning == 0) {
IEEE80211_UNLOCK(ic);
return ENXIO;
}
if (vap->iv_state == IEEE80211_S_INIT) {
/* NB: clobbers previous settings */
vap->iv_scanreq_flags = sr->sr_flags;