Bluetooth: Add hdev->short_name for EIR generation

It's possible to provide a short name through the mgmt interface and
this name can be used for EIR generation when the full name doesn't fit
there. This patch adds the preliminary tracking of the provided short
name.

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

3 files changed, 7 insertions, 1 deletions

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 24dd770d442b..3fcc7f0d08c3 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -129,6 +129,8 @@ struct le_scan_params {
         int timeout;
 };
 
+#define HCI_MAX_SHORT_NAME_LENGTH       10
+
 #define NUM_REASSEMBLY 4
 struct hci_dev {
         struct list_head list;
@@ -141,6 +143,7 @@ struct hci_dev {
         __u8            dev_type;
         bdaddr_t        bdaddr;
         __u8            dev_name[HCI_MAX_NAME_LENGTH];
+        __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
         __u8            eir[HCI_MAX_EIR_LENGTH];
         __u8            dev_class[3];
         __u8            major_class;
diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index ac59cdd0fa1b..495668c77fb6 100644
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -75,7 +75,7 @@ struct mgmt_rp_read_index_list {
 /* Reserve one extra byte for names in management messages so that they
  * are always guaranteed to be nul-terminated */
 #define MGMT_MAX_NAME_LENGTH            (HCI_MAX_NAME_LENGTH + 1)
-#define MGMT_MAX_SHORT_NAME_LENGTH      (10 + 1)
+#define MGMT_MAX_SHORT_NAME_LENGTH      (HCI_MAX_SHORT_NAME_LENGTH + 1)
 
 #define MGMT_SETTING_POWERED            0x00000001
 #define MGMT_SETTING_CONNECTABLE        0x00000002
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 16bddd22713f..3f6a2df9d150 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -2273,6 +2273,9 @@ static int set_local_name(struct sock *sk, u16 index, void *data,
                 goto failed;
         }
 
+        memcpy(hdev->short_name, mgmt_cp->short_name,
+                                                sizeof(hdev->short_name));
+
         memcpy(hci_cp.name, mgmt_cp->name, sizeof(hci_cp.name));
         err = hci_send_cmd(hdev, HCI_OP_WRITE_LOCAL_NAME, sizeof(hci_cp),
                                                                 &hci_cp);