nl80211: add API to probe a client

When the AP SME in hostapd is used it wants to
probe the clients when they have been idle for
some time. Add explicit API to support this.

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

1 files changed, 17 insertions, 0 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 86d207da6cce..389e85e8c03d 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1432,6 +1432,9 @@ struct cfg80211_gtk_rekey_data {
  *
  * @tdls_mgmt: Transmit a TDLS management frame.
  * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup).
+ *
+ * @probe_client: probe an associated client, must return a cookie that it
+ *      later passes to cfg80211_probe_status().
  */
 struct cfg80211_ops {
         int     (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -1621,6 +1624,9 @@ struct cfg80211_ops {
                              u16 status_code, const u8 *buf, size_t len);
         int     (*tdls_oper)(struct wiphy *wiphy, struct net_device *dev,
                              u8 *peer, enum nl80211_tdls_operation oper);
+
+        int     (*probe_client)(struct wiphy *wiphy, struct net_device *dev,
+                                const u8 *peer, u64 *cookie);
 };
 
 /*
@@ -3216,6 +3222,17 @@ void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index,
 bool cfg80211_rx_spurious_frame(struct net_device *dev,
                                 const u8 *addr, gfp_t gfp);
 
+/**
+ * cfg80211_probe_status - notify userspace about probe status
+ * @dev: the device the probe was sent on
+ * @addr: the address of the peer
+ * @cookie: the cookie filled in @probe_client previously
+ * @acked: indicates whether probe was acked or not
+ * @gfp: allocation flags
+ */
+void cfg80211_probe_status(struct net_device *dev, const u8 *addr,
+                           u64 cookie, bool acked, gfp_t gfp);
+
 /* Logging, debugging and troubleshooting/diagnostic helpers. */
 
 /* wiphy_printk helpers, similar to dev_printk */