Bluetooth: Read LE Max data length command

This patch adds the MGMT command and code to support reading
the maximum data length supported command for LE.

Change-Id: I4dc0041f2070de2ccb6a4164c8823612863c941e
Signed-off-by: Sudha Bheemanna <b.sudha@samsung.com>
Signed-off-by: Amit Purwar <amit.purwar@samsung.com>

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index ee6d95e..4fc5f3e 100644 (file)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -1692,6 +1692,8 @@ void mgmt_multi_adv_state_change_evt(struct hci_dev *hdev, u8 adv_instance,
                u8 state_change_reason, u16 connection_handle);
 void mgmt_6lowpan_conn_changed(struct hci_dev *hdev, char if_name[16],
                bdaddr_t *bdaddr, u8 addr_type, bool connected);
+void mgmt_le_read_maximum_data_length_complete(struct hci_dev *hdev,
+               u8 status);
 #endif
 
 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,

diff --git a/include/net/bluetooth/mgmt_tizen.h b/include/net/bluetooth/mgmt_tizen.h
index 52a36f9..444d793 100644 (file)
--- a/include/net/bluetooth/mgmt_tizen.h
+++ b/include/net/bluetooth/mgmt_tizen.h
@@ -185,6 +185,15 @@ struct mgmt_cp_disconnect_6lowpan {
 } __packed;
 #define MGMT_DISCONNECT_6LOWPAN_SIZE           7
 
+#define MGMT_OP_LE_READ_MAXIMUM_DATA_LENGTH    (TIZEN_OP_CODE_BASE + 0x15)
+struct mgmt_rp_le_read_maximum_data_length {
+       __le16  max_tx_octets;
+       __le16  max_tx_time;
+       __le16  max_rx_octets;
+       __le16  max_rx_time;
+} __packed;
+#define MGMT_LE_READ_MAXIMUM_DATA_LENGTH_SIZE  0
+
 /* EVENTS */
 
 /* For device name update changes */

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index feb1d7e..40dbcdd 100644 (file)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1351,13 +1351,22 @@ static void hci_cc_le_read_max_data_len(struct hci_dev *hdev,
 
        BT_DBG("%s status 0x%2.2x", hdev->name, rp->status);
 
+#ifndef TIZEN_BT
        if (rp->status)
                return;
+#else
+       hci_dev_lock(hdev);
+#endif
 
        hdev->le_max_tx_len = le16_to_cpu(rp->tx_len);
        hdev->le_max_tx_time = le16_to_cpu(rp->tx_time);
        hdev->le_max_rx_len = le16_to_cpu(rp->rx_len);
        hdev->le_max_rx_time = le16_to_cpu(rp->rx_time);
+
+#ifdef TIZEN_BT
+       mgmt_le_read_maximum_data_length_complete(hdev, rp->status);
+       hci_dev_unlock(hdev);
+#endif
 }
 
 static void hci_cc_write_le_host_supported(struct hci_dev *hdev,

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 279cb97..366c1ce 100644 (file)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -6688,6 +6688,83 @@ void mgmt_6lowpan_conn_changed(struct hci_dev *hdev, char if_name[16],
 
        mgmt_event(MGMT_EV_6LOWPAN_CONN_STATE_CHANGED, hdev, ev, ev_size, NULL);
 }
+
+void mgmt_le_read_maximum_data_length_complete(struct hci_dev *hdev, u8 status)
+{
+       struct mgmt_pending_cmd *cmd;
+       struct mgmt_rp_le_read_maximum_data_length rp;
+
+       BT_DBG("%s status %u", hdev->name, status);
+
+       cmd = pending_find(MGMT_OP_LE_READ_MAXIMUM_DATA_LENGTH, hdev);
+       if (!cmd)
+               return;
+
+       if (status)
+               mgmt_cmd_status(cmd->sk, hdev->id,
+                               MGMT_OP_LE_READ_MAXIMUM_DATA_LENGTH,
+                               mgmt_status(status));
+
+       memset(&rp, 0, sizeof(rp));
+
+       rp.max_tx_octets = cpu_to_le16(hdev->le_max_tx_len);
+       rp.max_tx_time = cpu_to_le16(hdev->le_max_tx_time);
+       rp.max_rx_octets = cpu_to_le16(hdev->le_max_rx_len);
+       rp.max_rx_time = cpu_to_le16(hdev->le_max_rx_time);
+
+       mgmt_cmd_complete(cmd->sk, hdev->id,
+                         MGMT_OP_LE_READ_MAXIMUM_DATA_LENGTH, 0,
+                         &rp, sizeof(rp));
+
+       mgmt_pending_remove(cmd);
+}
+
+static int read_maximum_le_data_length(struct sock *sk,
+               struct hci_dev *hdev, void *data, u16 len)
+{
+       struct mgmt_pending_cmd *cmd;
+       int err;
+
+       BT_DBG("read_maximum_le_data_length  %s", hdev->name);
+
+       hci_dev_lock(hdev);
+
+       if (!hdev_is_powered(hdev)) {
+               err = mgmt_cmd_status(sk, hdev->id,
+                                     MGMT_OP_LE_READ_MAXIMUM_DATA_LENGTH,
+                                     MGMT_STATUS_NOT_POWERED);
+               goto unlock;
+       }
+
+       if (!lmp_le_capable(hdev)) {
+               err = mgmt_cmd_status(sk, hdev->id,
+                                     MGMT_OP_LE_READ_MAXIMUM_DATA_LENGTH,
+                                     MGMT_STATUS_NOT_SUPPORTED);
+               goto unlock;
+       }
+
+       if (pending_find(MGMT_OP_LE_READ_MAXIMUM_DATA_LENGTH, hdev)) {
+               err = mgmt_cmd_status(sk, hdev->id,
+                                     MGMT_OP_LE_READ_MAXIMUM_DATA_LENGTH,
+                                     MGMT_STATUS_BUSY);
+               goto unlock;
+       }
+
+       cmd = mgmt_pending_add(sk, MGMT_OP_LE_READ_MAXIMUM_DATA_LENGTH,
+                              hdev, data, len);
+       if (!cmd) {
+               err = -ENOMEM;
+               goto unlock;
+       }
+
+       err = hci_send_cmd(hdev, HCI_OP_LE_READ_MAX_DATA_LEN, 0, NULL);
+       if (err < 0)
+               mgmt_pending_remove(cmd);
+
+unlock:
+       hci_dev_unlock(hdev);
+       return err;
+}
 #endif /* TIZEN_BT */
 
 static bool ltk_is_valid(struct mgmt_ltk_info *key)
@@ -8641,6 +8718,8 @@ static const struct hci_mgmt_handler tizen_mgmt_handlers[] = {
        { enable_bt_6lowpan,       MGMT_ENABLE_BT_6LOWPAN_SIZE },
        { connect_bt_6lowpan,      MGMT_CONNECT_6LOWPAN_SIZE },
        { disconnect_bt_6lowpan,   MGMT_DISCONNECT_6LOWPAN_SIZE },
+       { read_maximum_le_data_length,
+                                  MGMT_LE_READ_MAXIMUM_DATA_LENGTH_SIZE },
 };
 #endif