nl80211: support sending TDLS commands/frames

Add support for sending high-level TDLS commands and TDLS frames via
NL80211_CMD_TDLS_OPER and NL80211_CMD_TDLS_MGMT, respectively. Add
appropriate cfg80211 callbacks for lower level drivers.

Add wiphy capability flags for TDLS support and advertise them via
nl80211.

Signed-off-by: Arik Nemtsov <arik@wizery.com>
Cc: Kalyan C Gaddam <chakkal@iit.edu>
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 34b8f269976b..74f4f85be32f 100644
--- a/include/net/cfg80211.h
+++ b/include/net/cfg80211.h
@@ -1422,6 +1422,9 @@ struct cfg80211_gtk_rekey_data {
  * @set_ringparam: Set tx and rx ring sizes.
  *
  * @get_ringparam: Get tx and rx ring current and maximum sizes.
+ *
+ * @tdls_mgmt: Transmit a TDLS management frame.
+ * @tdls_oper: Perform a high-level TDLS operation (e.g. TDLS link setup).
  */
 struct cfg80211_ops {
         int     (*suspend)(struct wiphy *wiphy, struct cfg80211_wowlan *wow);
@@ -1605,6 +1608,12 @@ struct cfg80211_ops {
 
         int     (*set_rekey_data)(struct wiphy *wiphy, struct net_device *dev,
                                   struct cfg80211_gtk_rekey_data *data);
+
+        int     (*tdls_mgmt)(struct wiphy *wiphy, struct net_device *dev,
+                             u8 *peer, u8 action_code,  u8 dialog_token,
+                             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);
 };
 
 /*
@@ -1657,6 +1666,12 @@ struct cfg80211_ops {
  * @WIPHY_FLAG_SUPPORTS_FW_ROAM: The device supports roaming feature in the
  *      firmware.
  * @WIPHY_FLAG_AP_UAPSD: The device supports uapsd on AP.
+ * @WIPHY_FLAG_SUPPORTS_TDLS: The device supports TDLS (802.11z) operation.
+ * @WIPHY_FLAG_TDLS_EXTERNAL_SETUP: The device does not handle TDLS (802.11z)
+ *      link setup/discovery operations internally. Setup, discovery and
+ *      teardown packets should be sent through the @NL80211_CMD_TDLS_MGMT
+ *      command. When this flag is not set, @NL80211_CMD_TDLS_OPER should be
+ *      used for asking the driver/firmware to perform a TDLS operation.
  */
 enum wiphy_flags {
         WIPHY_FLAG_CUSTOM_REGULATORY            = BIT(0),
@@ -1673,6 +1688,8 @@ enum wiphy_flags {
         WIPHY_FLAG_ENFORCE_COMBINATIONS         = BIT(12),
         WIPHY_FLAG_SUPPORTS_FW_ROAM             = BIT(13),
         WIPHY_FLAG_AP_UAPSD                     = BIT(14),
+        WIPHY_FLAG_SUPPORTS_TDLS                = BIT(15),
+        WIPHY_FLAG_TDLS_EXTERNAL_SETUP          = BIT(16),
 };
 
 /**