cfg80211: allow registering to beacons

Add the ability to register to received beacon frames
to allow implementing OLBC logic in userspace. The
registration is per wiphy since there's no point in
receiving the same frame multiple times.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 389e85e8c03d..d01307f54faa 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1686,6 +1686,9 @@ struct cfg80211_ops {
  *      command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be
  *      used for asking the driver/firmware to perform a TDLS operation.
  * @WIPHY_FLAG_HAVE_AP_SME: device integrates AP SME
+ * @WIPHY_FLAG_REPORTS_OBSS: the device will report beacons from other BSSes
+ *      when there are virtual interfaces in AP mode by calling
+ *      cfg80211_report_obss_beacon().
  */
 enum wiphy_flags {
         WIPHY_FLAG_CUSTOM_REGULATORY            = BIT(0),
@@ -1705,6 +1708,7 @@ enum wiphy_flags {
         WIPHY_FLAG_SUPPORTS_TDLS                = BIT(15),
         WIPHY_FLAG_TDLS_EXTERNAL_SETUP          = BIT(16),
         WIPHY_FLAG_HAVE_AP_SME                  = BIT(17),
+        WIPHY_FLAG_REPORTS_OBSS                 = BIT(18),
 };
 
 /**
@@ -3233,6 +3237,22 @@ bool cfg80211_rx_spurious_frame(struct net_device *dev,
 void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
                            u64 cookie, bool acked, gfp_t gfp);
 
+/**
+ * cfg80211_report_obss_beacon - report beacon from other APs
+ * @wiphy: The wiphy that received the beacon
+ * @frame: the frame
+ * @len: length of the frame
+ * @freq: frequency the frame was received on
+ * @gfp: allocation flags
+ *
+ * Use this function to report to userspace when a beacon was
+ * received. It is not useful to call this when there is no
+ * netdev that is in AP/GO mode.
+ */
+void cfg80211_report_obss_beacon(struct wiphy *wiphy,
+                                 const u8 *frame, size_t len,
+                                 int freq, gfp_t gfp);
+
 /* Logging, debugging and troubleshooting/diagnostic helpers. */
 
 /* wiphy_printk helpers, similar to dev_printk */