ieee820154: add lbt setting support

This patch adds support for setting listen before transmit mode via
nl802154 framework.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 16 insertions, 0 deletions

diff --git a/net/mac802154/cfg.c b/net/mac802154/cfg.c
index a8f6eaa76d4d..5d669d87dd7d 100644
--- a/net/mac802154/cfg.c
+++ b/net/mac802154/cfg.c
@@ -155,6 +155,21 @@ static int ieee802154_set_max_frame_retries(struct wpan_phy *wpan_phy,
         return 0;
 }
 
+static int ieee802154_set_lbt_mode(struct wpan_phy *wpan_phy,
+                                   struct wpan_dev *wpan_dev,
+                                   const bool mode)
+{
+        struct ieee802154_local *local = wpan_phy_priv(wpan_phy);
+
+        ASSERT_RTNL();
+
+        if (!(local->hw.flags & IEEE802154_HW_LBT))
+                return -EOPNOTSUPP;
+
+        wpan_dev->lbt = mode;
+        return 0;
+}
+
 const struct cfg802154_ops mac802154_config_ops = {
         .add_virtual_intf_deprecated = ieee802154_add_iface_deprecated,
         .del_virtual_intf_deprecated = ieee802154_del_iface_deprecated,
@@ -164,4 +179,5 @@ const struct cfg802154_ops mac802154_config_ops = {
         .set_backoff_exponent = ieee802154_set_backoff_exponent,
         .set_max_csma_backoffs = ieee802154_set_max_csma_backoffs,
         .set_max_frame_retries = ieee802154_set_max_frame_retries,
+        .set_lbt_mode = ieee802154_set_lbt_mode,
 };