Bluetooth: Provide msg_name callback for L2CAP connectionless channels

The L2CAP connectionless channels use SOCK_DGRAM and recvmsg() and need
to receive the remote BD_ADDR and PSM information via msg_name from
the recvmsg() system call.

So in case the L2CAP socket is for connectionless channels, provide
a msg_name callback that can update the data. Also store the remote
BD_ADDR and PSM in the skb so it can be extracted later on.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index 896aad80bc4d..bf2ddffdae2d 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -284,6 +284,8 @@ struct bt_skb_cb {
         __u8 force_active;
         struct l2cap_ctrl control;
         struct hci_req_ctrl req;
+        bdaddr_t bdaddr;
+        __le16 psm;
 };
 #define bt_cb(skb) ((struct bt_skb_cb *)((skb)->cb))