[RFC v3 08/13] cfg80211: refuse to .set_monitor_channel when non-monitors are present
From: Michal Kazior <hidden>
Date: 2012-06-26 12:30:39
Subsystem:
802.11 (including cfg80211/nl80211), the rest · Maintainers:
Johannes Berg, Linus Torvalds
Having .set_monitor_channel work with non-monitor interfaces running would make interface combinations accounting ambiguous. Signed-off-by: Michal Kazior <redacted> --- net/wireless/chan.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/net/wireless/chan.c b/net/wireless/chan.c
index 167e7cb..019401b 100644
--- a/net/wireless/chan.c
+++ b/net/wireless/chan.c@@ -85,6 +85,8 @@ int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev, if (!rdev->ops->set_monitor_channel) return -EOPNOTSUPP; + if (!cfg80211_has_monitors_only(rdev)) + return -EBUSY; chan = rdev_freq_to_chan(rdev, freq, chantype); if (!chan)
--
1.7.0.4