Bluetooth: Add support for appearance in scan rsp

This patch enables prepending appearance value to scan response data.
It also adds support for setting appearance value through mgmt command.
If currently advertised instance has apperance flag set it is expired
immediately.

Signed-off-by: Michał Narajowski <michal.narajowski@codecoup.pl>
Signed-off-by: Szymon Janc <szymon.janc@codecoup.pl>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/net/bluetooth/hci_request.c b/net/bluetooth/hci_request.c
index 0ce6cdd278b2..c8135680c43e 100644
--- a/net/bluetooth/hci_request.c
+++ b/net/bluetooth/hci_request.c
@@ -1015,6 +1015,14 @@ static u8 create_instance_scan_rsp_data(struct hci_dev *hdev, u8 instance,
 
         instance_flags = adv_instance->flags;
 
+        if ((instance_flags & MGMT_ADV_FLAG_APPEARANCE) && hdev->appearance) {
+                ptr[0] = 3;
+                ptr[1] = EIR_APPEARANCE;
+                put_unaligned_le16(hdev->appearance, ptr + 2);
+                scan_rsp_len += 4;
+                ptr += 4;
+        }
+
         memcpy(ptr, adv_instance->scan_rsp_data,
                adv_instance->scan_rsp_len);