Bluetooth: Use LE buffers for LE traffic

Bluetooth chips may have separate buffers for LE traffic.
This patch add support to use LE buffers provided by the chip.

Signed-off-by: Ville Tervo <ville.tervo@nokia.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

1 files changed, 33 insertions, 0 deletions

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 47c6e9316ce8..3155ad588076 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -776,6 +776,25 @@ static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb)
                 mgmt_pin_code_neg_reply_complete(hdev->id, &rp->bdaddr,
                                                                 rp->status);
 }
+static void hci_cc_le_read_buffer_size(struct hci_dev *hdev,
+                                       struct sk_buff *skb)
+{
+        struct hci_rp_le_read_buffer_size *rp = (void *) skb->data;
+
+        BT_DBG("%s status 0x%x", hdev->name, rp->status);
+
+        if (rp->status)
+                return;
+
+        hdev->le_mtu = __le16_to_cpu(rp->le_mtu);
+        hdev->le_pkts = rp->le_max_pkt;
+
+        hdev->le_cnt = hdev->le_pkts;
+
+        BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts);
+
+        hci_req_complete(hdev, HCI_OP_LE_READ_BUFFER_SIZE, rp->status);
+}
 
 static inline void hci_cs_inquiry(struct hci_dev *hdev, __u8 status)
 {
@@ -1704,6 +1723,10 @@ static inline void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *sk
                 hci_cc_pin_code_neg_reply(hdev, skb);
                 break;
 
+        case HCI_OP_LE_READ_BUFFER_SIZE:
+                hci_cc_le_read_buffer_size(hdev, skb);
+                break;
+
         default:
                 BT_DBG("%s opcode 0x%x", hdev->name, opcode);
                 break;
@@ -1849,6 +1872,16 @@ static inline void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *s
                                 hdev->acl_cnt += count;
                                 if (hdev->acl_cnt > hdev->acl_pkts)
                                         hdev->acl_cnt = hdev->acl_pkts;
+                        } else if (conn->type == LE_LINK) {
+                                if (hdev->le_pkts) {
+                                        hdev->le_cnt += count;
+                                        if (hdev->le_cnt > hdev->le_pkts)
+                                                hdev->le_cnt = hdev->le_pkts;
+                                } else {
+                                        hdev->acl_cnt += count;
+                                        if (hdev->acl_cnt > hdev->acl_pkts)
+                                                hdev->acl_cnt = hdev->acl_pkts;
+                                }
                         } else {
                                 hdev->sco_cnt += count;
                                 if (hdev->sco_cnt > hdev->sco_pkts)