nl80211/cfg80211: extend mgmt-tx API for off-channel

With p2p, it is sometimes necessary to transmit
a frame (typically an action frame) on another
channel than the current channel. Enable this
through the CMD_FRAME API, and allow it to wait
for a response. A new command allows that wait
to be aborted.

However, allow userspace to specify whether or
not it wants to allow off-channel TX, it may
actually want to use the same channel only.

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

1 files changed, 8 insertions, 3 deletions

diff --git a/include/net/cfg80211.h b/include/net/cfg80211.h
index 0663945cfa48..49a7c53a48ca 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1134,7 +1134,9 @@ struct cfg80211_pmksa {
  * @cancel_remain_on_channel: Cancel an on-going remain-on-channel operation.
  *      This allows the operation to be terminated prior to timeout based on
  *      the duration value.
- * @mgmt_tx: Transmit a management frame
+ * @mgmt_tx: Transmit a management frame.
+ * @mgmt_tx_cancel_wait: Cancel the wait time from transmitting a management
+ *      frame on another channel
  *
  * @testmode_cmd: run a test mode command
  *
@@ -1291,10 +1293,13 @@ struct cfg80211_ops {
                                             u64 cookie);
 
         int     (*mgmt_tx)(struct wiphy *wiphy, struct net_device *dev,
-                          struct ieee80211_channel *chan,
+                          struct ieee80211_channel *chan, bool offchan,
                           enum nl80211_channel_type channel_type,
-                          bool channel_type_valid,
+                          bool channel_type_valid, unsigned int wait,
                           const u8 *buf, size_t len, u64 *cookie);
+        int     (*mgmt_tx_cancel_wait)(struct wiphy *wiphy,
+                                       struct net_device *dev,
+                                       u64 cookie);
 
         int     (*set_power_mgmt)(struct wiphy *wiphy, struct net_device *dev,
                                   bool enabled, int timeout);