mac80211_hwsim: validate number of different channels
When creating a new radio on the fly, hwsim allows this
to be done with an arbitrary number of channels, but
cfg80211 only supports a limited number of simultaneous
channels, leading to a warning.
Fix this by validating the number - this requires moving
the define for the maximum out to a visible header file.
Reported-by: syzbot+8dd9051ff19940290931@syzkaller.appspotmail.com
Fixes: b59ec8dd4394 ("mac80211_hwsim: fix number of channels in interface combinations")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index cb4d92b..fb94a8b 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -815,6 +815,8 @@ struct cfg80211_csa_settings {
u8 count;
};
+#define CFG80211_MAX_NUM_DIFFERENT_CHANNELS 10
+
/**
* struct iface_combination_params - input parameters for interface combinations
*