cfg80211: track monitor interfaces count
Implements .set_monitor_enabled(wiphy, enabled).
Notifies driver upon change of interface layout.
If only monitor interfaces become present it is
called with 2nd argument being true. If
non-monitor interface appears then 2nd argument
is false. Driver is notified only upon change.
This makes it more obvious about the fact that
cfg80211 supports single monitor channel. Once we
implement multi-channel we don't want to allow
setting monitor channel while other interface
types are running. Otherwise it would be ambiguous
once we start considering num_different_channels.
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/net/wireless/core.h b/net/wireless/core.h
index 56f18c2..99acd51 100644
--- a/net/wireless/core.h
+++ b/net/wireless/core.h
@@ -56,6 +56,9 @@
u32 ap_beacons_nlpid;
+ int num_running_ifaces;
+ int num_running_monitor_ifaces;
+
/* BSSes/scanning */
spinlock_t bss_lock;
struct list_head bss_list;
@@ -197,6 +200,14 @@
#define ASSERT_RDEV_LOCK(rdev) lockdep_assert_held(&(rdev)->mtx)
#define ASSERT_WDEV_LOCK(wdev) lockdep_assert_held(&(wdev)->mtx)
+static inline bool cfg80211_has_monitors_only(struct cfg80211_registered_device *rdev)
+{
+ ASSERT_RDEV_LOCK(rdev);
+
+ return rdev->num_running_ifaces == rdev->num_running_monitor_ifaces &&
+ rdev->num_running_ifaces > 0;
+}
+
enum cfg80211_event_type {
EVENT_CONNECT_RESULT,
EVENT_ROAMED,
@@ -444,6 +455,9 @@
int cfg80211_validate_beacon_int(struct cfg80211_registered_device *rdev,
u32 beacon_int);
+void cfg80211_update_iface_num(struct cfg80211_registered_device *rdev,
+ enum nl80211_iftype iftype, int num);
+
#ifdef CONFIG_CFG80211_DEVELOPER_WARNINGS
#define CFG80211_DEV_WARN_ON(cond) WARN_ON(cond)
#else