Bluetooth: Add HCI Read Data Block Size function

Implement block size read function. Use different variables for
packet-based and block-based flow control.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

3 files changed, 39 insertions, 0 deletions

diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index c9ad56fe58f4..2e48d326e365 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -746,6 +746,14 @@ struct hci_rp_read_bd_addr {
         bdaddr_t bdaddr;
 } __packed;
 
+#define HCI_OP_READ_DATA_BLOCK_SIZE     0x100a
+struct hci_rp_read_data_block_size {
+        __u8     status;
+        __le16   max_acl_len;
+        __le16   block_len;
+        __le16   num_blocks;
+} __packed;
+
 #define HCI_OP_WRITE_PAGE_SCAN_ACTIVITY 0x0c1c
 struct hci_cp_write_page_scan_activity {
         __le16   interval;
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 105eaa251034..74f8356b9ff1 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -181,6 +181,11 @@ struct hci_dev {
         unsigned int    sco_pkts;
         unsigned int    le_pkts;
 
+        __u16           block_len;
+        __u16           block_mtu;
+        __u16           num_blocks;
+        __u16           block_cnt;
+
         unsigned long   acl_last_tx;
         unsigned long   sco_last_tx;
         unsigned long   le_last_tx;
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 74f758363c2d..48796832fdf0 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -767,6 +767,28 @@ static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb)
         hci_req_complete(hdev, HCI_OP_READ_BD_ADDR, rp->status);
 }
 
+static void hci_cc_read_data_block_size(struct hci_dev *hdev,
+                                                        struct sk_buff *skb)
+{
+        struct hci_rp_read_data_block_size *rp = (void *) skb->data;
+
+        BT_DBG("%s status 0x%x", hdev->name, rp->status);
+
+        if (rp->status)
+                return;
+
+        hdev->block_mtu = __le16_to_cpu(rp->max_acl_len);
+        hdev->block_len = __le16_to_cpu(rp->block_len);
+        hdev->num_blocks = __le16_to_cpu(rp->num_blocks);
+
+        hdev->block_cnt = hdev->num_blocks;
+
+        BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu,
+                                        hdev->block_cnt, hdev->block_len);
+
+        hci_req_complete(hdev, HCI_OP_READ_DATA_BLOCK_SIZE, rp->status);
+}
+
 static void hci_cc_write_ca_timeout(struct hci_dev *hdev, struct sk_buff *skb)
 {
         __u8 status = *((__u8 *) skb->data);
@@ -2018,6 +2040,10 @@ static inline void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *sk
                 hci_cc_read_bd_addr(hdev, skb);
                 break;
 
+        case HCI_OP_READ_DATA_BLOCK_SIZE:
+                hci_cc_read_data_block_size(hdev, skb);
+                break;
+
         case HCI_OP_WRITE_CA_TIMEOUT:
                 hci_cc_write_ca_timeout(hdev, skb);
                 break;