3 files changed, 11 insertions, 0 deletions

diff --git a/net/mac802154/mac802154.h b/net/mac802154/mac802154.h
index a4dcaf1dd4b6..21fa386f4675 100644
--- a/net/mac802154/mac802154.h
+++ b/net/mac802154/mac802154.h
@@ -114,5 +114,6 @@ void mac802154_dev_set_ieee_addr(struct net_device *dev);
 u16 mac802154_dev_get_pan_id(const struct net_device *dev);
 void mac802154_dev_set_pan_id(struct net_device *dev, u16 val);
 void mac802154_dev_set_page_channel(struct net_device *dev, u8 page, u8 chan);
+u8 mac802154_dev_get_dsn(const struct net_device *dev);
 
 #endif /* MAC802154_H */
diff --git a/net/mac802154/mac_cmd.c b/net/mac802154/mac_cmd.c
index d8d277006089..a99910d4d52f 100644
--- a/net/mac802154/mac_cmd.c
+++ b/net/mac802154/mac_cmd.c
@@ -73,4 +73,5 @@ struct ieee802154_mlme_ops mac802154_mlme_wpan = {
         .start_req = mac802154_mlme_start_req,
         .get_pan_id = mac802154_dev_get_pan_id,
         .get_short_addr = mac802154_dev_get_short_addr,
+        .get_dsn = mac802154_dev_get_dsn,
 };
diff --git a/net/mac802154/mib.c b/net/mac802154/mib.c
index f47781ab0ccc..f03e55f2ebf0 100644
--- a/net/mac802154/mib.c
+++ b/net/mac802154/mib.c
@@ -159,6 +159,15 @@ void mac802154_dev_set_pan_id(struct net_device *dev, u16 val)
         }
 }
 
+u8 mac802154_dev_get_dsn(const struct net_device *dev)
+{
+        struct mac802154_sub_if_data *priv = netdev_priv(dev);
+
+        BUG_ON(dev->type != ARPHRD_IEEE802154);
+
+        return priv->dsn++;
+}
+
 static void phy_chan_notify(struct work_struct *work)
 {
         struct phy_chan_notify_work *nw = container_of(work,