nl80211: better document NL80211_CMD_TDLS_MGMT

This command has different semantics depending on the action code sent.
Document this fact and detail the supported action codes.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index f752e9821e71..3d8325bb50cd 100644
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -581,7 +581,14 @@
  *      operation, %NL80211_ATTR_MAC contains the peer MAC address, and
  *      %NL80211_ATTR_REASON_CODE the reason code to be used (only with
  *      %NL80211_TDLS_TEARDOWN).
- * @NL80211_CMD_TDLS_MGMT: Send a TDLS management frame.
+ * @NL80211_CMD_TDLS_MGMT: Send a TDLS management frame. The
+ *      %NL80211_ATTR_TDLS_ACTION attribute determines the type of frame to be
+ *      sent. Public Action codes (802.11-2012 8.1.5.1) will be sent as
+ *      802.11 management frames, while TDLS action codes (802.11-2012
+ *      8.5.13.1) will be encapsulated and sent as data frames. The currently
+ *      supported Public Action code is %WLAN_PUB_ACTION_TDLS_DISCOVER_RES
+ *      and the currently supported TDLS actions codes are given in
+ *      &enum ieee80211_tdls_actioncode.
  *
  * @NL80211_CMD_UNEXPECTED_FRAME: Used by an application controlling an AP
  *      (or GO) interface (i.e. hostapd) to ask for unexpected frames to