Bluetooth: Set le data length command and event

Sets the data length for the le data packet with in the
advised limits. MGMT command and event are added to handle
the setting of data length.

Change-Id: Icc7db1a7361764fcb3d5a990357408942effe25d
Signed-off-by: Sudha Bheemanna <b.sudha@samsung.com>

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index d7ca769..185214e 100644 (file)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -448,6 +448,12 @@ struct hci_conn {
        __u8            remote_id;
 
        unsigned int    sent;
+#ifdef CONFIG_TIZEN_WIP
+       __u16           tx_len;
+       __u16           tx_time;
+       __u16           rx_len;
+       __u16           rx_time;
+#endif
 
        struct sk_buff_head data_q;
        struct list_head chan_list;
@@ -500,6 +506,10 @@ struct hci_conn_params {
        u16 conn_latency;
        u16 supervision_timeout;
 
+#ifdef CONFIG_TIZEN_WIP
+       u16 max_tx_octets;
+       u16 max_tx_time;
+#endif
        enum {
                HCI_AUTO_CONN_DISABLED,
                HCI_AUTO_CONN_REPORT,
@@ -1570,6 +1580,10 @@ void mgmt_le_write_host_suggested_data_length_complete(struct hci_dev *hdev,
                u8 status);
 void mgmt_le_read_host_suggested_data_length_complete(struct hci_dev *hdev,
                u8 status);
+void mgmt_le_data_length_change_complete(struct hci_dev *hdev,
+               bdaddr_t *bdaddr, u16 tx_octets, u16 tx_time,
+               u16 rx_octets, u16 rx_time);
+int hci_le_set_data_length(struct hci_conn *conn, u16 tx_octets, u16 tx_time);
 #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 0aad035..baf2de4 100644 (file)
--- a/include/net/bluetooth/mgmt_tizen.h
+++ b/include/net/bluetooth/mgmt_tizen.h
@@ -206,6 +206,20 @@ struct mgmt_rp_le_read_host_suggested_data_length {
 } __packed;
 #define MGMT_LE_READ_HOST_SUGGESTED_DATA_LENGTH_SIZE   0
 
+#define MGMT_OP_LE_SET_DATA_LENGTH             (TIZEN_OP_CODE_BASE + 0x18)
+struct mgmt_cp_le_set_data_length {
+       bdaddr_t        bdaddr;
+       __le16  max_tx_octets;
+       __le16  max_tx_time;
+} __packed;
+#define MGMT_LE_SET_DATA_LENGTH_SIZE           10
+
+struct mgmt_rp_le_set_data_length {
+       __u8    status;
+       __le16  handle;
+} __packed;
+#define MGMT_LE_SET_DATA_LENGTH_RSP_SIZE               3
+
 /* BEGIN TIZEN_Bluetooth :: name update changes */
 #define MGMT_EV_DEVICE_NAME_UPDATE             (TIZEN_EV_BASE + 0x01)
 struct mgmt_ev_device_name_update {
@@ -288,4 +302,13 @@ struct mgmt_ev_6lowpan_conn_state_changed {
        __u8    ifname[16];
 } __packed;
 
+#define MGMT_EV_LE_DATA_LENGTH_CHANGED         (TIZEN_EV_BASE + 0x0d)
+struct mgmt_ev_le_data_length_changed {
+       struct  mgmt_addr_info addr;
+       __le16  max_tx_octets;
+       __le16  max_tx_time;
+       __le16  max_rx_octets;
+       __le16  max_rx_time;
+} __packed;
+
 #endif   /* CONFIG_TIZEN_WIP */

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 8079df8..b133366 100644 (file)
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1173,6 +1173,35 @@ int hci_conn_change_supervision_timeout(struct hci_conn *conn, __u16 timeout)
 
        return 0;
 }
+
+int hci_le_set_data_length(struct hci_conn *conn, u16 tx_octets, u16 tx_time)
+{
+       struct hci_dev *hdev = conn->hdev;
+       struct hci_conn_params *params;
+       struct hci_cp_le_set_data_len cp;
+
+       hci_dev_lock(hdev);
+
+       params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type);
+       if (params) {
+               params->max_tx_octets = tx_octets;
+               params->max_tx_time = tx_time;
+       }
+
+       hci_dev_unlock(hdev);
+
+       memset(&cp, 0, sizeof(cp));
+       cp.handle = cpu_to_le16(conn->handle);
+       cp.tx_len = cpu_to_le16(tx_octets);
+       cp.tx_time = cpu_to_le16(tx_time);
+
+       hci_send_cmd(hdev, HCI_OP_LE_SET_DATA_LEN, sizeof(cp), &cp);
+
+       if (params)
+               return 0x01;
+
+       return 0x00;
+}
 #endif
 
 /* Enter active mode */

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 3e9356d..85cb063 100644 (file)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1518,7 +1518,33 @@ static void hci_cc_get_raw_rssi(struct hci_dev *hdev,
        mgmt_raw_rssi_response(hdev, rp, rp->status);
 }
 /* END TIZEN_Bluetooth :: Handle RSSI monitoring */
+
+static void hci_le_data_length_changed_complete_evt(struct hci_dev *hdev,
+               struct sk_buff *skb)
+{
+       struct hci_ev_le_data_len_change *ev = (void *)skb->data;
+       struct hci_conn *conn;
+
+       BT_DBG("%s status", hdev->name);
+
+       hci_dev_lock(hdev);
+
+       conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+       if (conn) {
+               conn->tx_len = le16_to_cpu(ev->tx_len);
+               conn->tx_time = le16_to_cpu(ev->tx_time);
+               conn->rx_len = le16_to_cpu(ev->rx_len);
+               conn->rx_time = le16_to_cpu(ev->rx_time);
+       }
+
+       mgmt_le_data_length_change_complete(hdev, &conn->dst,
+                                           conn->tx_len, conn->tx_time,
+                                           conn->rx_len, conn->rx_time);
+
+       hci_dev_unlock(hdev);
+}
 #endif
+
 static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb)
 {
        struct hci_rp_read_rssi *rp = (void *) skb->data;
@@ -5298,6 +5324,12 @@ static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
                hci_le_direct_adv_report_evt(hdev, skb);
                break;
 
+#ifdef CONFIG_TIZEN_WIP
+       case HCI_EV_LE_DATA_LEN_CHANGE:
+               hci_le_data_length_changed_complete_evt(hdev, skb);
+               break;
+#endif
+
        default:
                break;
        }

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index bf0b74b..0dfc634 100644 (file)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -7228,6 +7228,98 @@ unlock:
        return err;
 }
 
+static int set_le_data_length_params(struct sock *sk, struct hci_dev *hdev,
+               void *data, u16 len)
+{
+       struct mgmt_cp_le_set_data_length *cp = data;
+       struct mgmt_rp_le_set_data_length *rp;
+       struct pending_cmd *cmd;
+       struct hci_conn *conn;
+       int err = 0;
+       u16 max_tx_octets, max_tx_time;
+       size_t rp_len;
+
+       BT_INFO("Set Data length for the device %s", hdev->name);
+
+       hci_dev_lock(hdev);
+
+       rp_len = sizeof(*rp);
+       rp = kmalloc(rp_len, GFP_KERNEL);
+       if (!rp) {
+               err = -ENOMEM;
+               goto unlock;
+       }
+
+       if (!hdev_is_powered(hdev)) {
+               err = cmd_status(sk, hdev->id, MGMT_OP_LE_SET_DATA_LENGTH,
+                                     MGMT_STATUS_NOT_POWERED);
+               goto unlock;
+       }
+
+       if (!lmp_le_capable(hdev)) {
+               err = cmd_status(sk, hdev->id, MGMT_OP_LE_SET_DATA_LENGTH,
+                                     MGMT_STATUS_NOT_SUPPORTED);
+               goto unlock;
+       }
+
+       if (mgmt_pending_find(MGMT_OP_LE_SET_DATA_LENGTH, hdev)) {
+               err = cmd_status(sk, hdev->id, MGMT_OP_LE_SET_DATA_LENGTH,
+                                     MGMT_STATUS_BUSY);
+               goto unlock;
+       }
+
+       cmd = mgmt_pending_add(sk, MGMT_OP_LE_SET_DATA_LENGTH, hdev, data, len);
+       if (!cmd) {
+               err = -ENOMEM;
+               goto unlock;
+       }
+
+       max_tx_octets = __le16_to_cpu(cp->max_tx_octets);
+       max_tx_time = __le16_to_cpu(cp->max_tx_time);
+
+       BT_DBG("max_tx_octets 0x%4.4x max_tx_time 0x%4.4x latency",
+              max_tx_octets, max_tx_time);
+
+       conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->bdaddr);
+       if (!conn) {
+               cmd_status(sk, hdev->id, MGMT_OP_LE_SET_DATA_LENGTH,
+                               MGMT_STATUS_NOT_CONNECTED);
+               goto unlock;
+       }
+
+       hci_dev_unlock(hdev);
+
+       err = hci_le_set_data_length(conn, max_tx_octets, max_tx_time);
+       if (err < 0)
+               mgmt_pending_remove(cmd);
+
+       rp->handle = conn->handle;
+       rp->status = 0;
+
+       hci_dev_lock(hdev);
+       err = cmd_complete(sk, hdev->id, MGMT_OP_LE_SET_DATA_LENGTH, 0,
+                               rp, rp_len);
+unlock:
+       kfree(rp);
+       hci_dev_unlock(hdev);
+
+       return err;
+}
+
+void mgmt_le_data_length_change_complete(struct hci_dev *hdev,
+               bdaddr_t *bdaddr, u16 tx_octets, u16 tx_time,
+               u16 rx_octets, u16 rx_time)
+{
+       struct mgmt_ev_le_data_length_changed ev;
+
+       bacpy(&ev.addr.bdaddr, bdaddr);
+       ev.max_tx_octets = tx_octets;
+       ev.max_tx_time = tx_time;
+       ev.max_rx_octets = rx_octets;
+       ev.max_rx_time = rx_time;
+
+       mgmt_event(MGMT_EV_LE_DATA_LENGTH_CHANGED, hdev, &ev, sizeof(ev), NULL);
+}
 /* END TIZEN_Bluetooth */
 #endif
 
@@ -8337,6 +8429,8 @@ static const struct mgmt_handler tizen_mgmt_handlers[] = {
                        MGMT_LE_WRITE_HOST_SUGGESTED_DATA_LENGTH_SIZE },
        { read_host_suggested_data_length, false,
                                   MGMT_LE_READ_HOST_SUGGESTED_DATA_LENGTH_SIZE },
+       { set_le_data_length_params, false,
+                                  MGMT_LE_SET_DATA_LENGTH_SIZE },
 };
 #endif