nl80211: allow subscribing to unexpected class3 frames
To implement AP mode without monitor interfaces we
need to be able to send a deauth to stations that
send frames without being associated. Enable this
by adding a new nl80211 event for such frames that
an application can subscribe to.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/include/linux/nl80211.h b/include/linux/nl80211.h
index 8049bf7..9107adc 100644
--- a/include/linux/nl80211.h
+++ b/include/linux/nl80211.h
@@ -509,6 +509,16 @@
* @NL80211_CMD_TDLS_OPER: Perform a high-level TDLS command (e.g. link setup).
* @NL80211_CMD_TDLS_MGMT: Send a TDLS management frame.
*
+ * @NL80211_CMD_UNEXPECTED_FRAME: Used by an application controlling an AP
+ * (or GO) interface (i.e. hostapd) to ask for unexpected frames to
+ * implement sending deauth to stations that send unexpected class 3
+ * frames. Also used as the event sent by the kernel when such a frame
+ * is received.
+ * For the event, the %NL80211_ATTR_MAC attribute carries the TA and
+ * other attributes like the interface index are present.
+ * If used as the command it must have an interface index and you can
+ * only unsubscribe from the event by closing the socket.
+ *
* @NL80211_CMD_MAX: highest used command number
* @__NL80211_CMD_AFTER_LAST: internal use
*/
@@ -638,6 +648,8 @@
NL80211_CMD_TDLS_OPER,
NL80211_CMD_TDLS_MGMT,
+ NL80211_CMD_UNEXPECTED_FRAME,
+
/* add new commands above here */
/* used to define NL80211_CMD_MAX below */
diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 0c71d4a..ef118e4 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -2183,6 +2183,8 @@
int beacon_interval;
+ u32 ap_unexpected_nlpid;
+
#ifdef CONFIG_CFG80211_WEXT
/* wext data */
struct {
@@ -3193,6 +3195,21 @@
void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
const u8 *bssid, bool preauth, gfp_t gfp);
+/**
+ * cfg80211_rx_spurious_frame - inform userspace about a spurious frame
+ * @dev: The device the frame matched to
+ * @addr: the transmitter address
+ * @gfp: context flags
+ *
+ * This function is used in AP mode (only!) to inform userspace that
+ * a spurious class 3 frame was received, to be able to deauth the
+ * sender.
+ * Returns %true if the frame was passed to userspace (or this failed
+ * for a reason other than not having a subscription.)
+ */
+bool cfg80211_rx_spurious_frame(struct net_device *dev,
+ const u8 *addr, gfp_t gfp);
+
/* Logging, debugging and troubleshooting/diagnostic helpers. */
/* wiphy_printk helpers, similar to dev_printk */