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| author | Vikram Kandukuri <vkandukuri@atheros.com> | 2009-07-02 14:31:59 +0530 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2009-08-22 14:12:37 -0700 |
| commit | 290ba200815fdecb4d40dc942499c4ea6d0c4624 (patch) | |
| tree | b6a097bd9b8ddd580501aa9871af3380e95bd5dc /drivers/bluetooth | |
| parent | 981b1414d78a7a42cab48b97d4de54a62d61db88 (diff) | |
| download | linux-stable-290ba200815fdecb4d40dc942499c4ea6d0c4624.tar.gz linux-stable-290ba200815fdecb4d40dc942499c4ea6d0c4624.tar.bz2 linux-stable-290ba200815fdecb4d40dc942499c4ea6d0c4624.zip | |
Bluetooth: Improve USB driver throughput by increasing the frame size
This patch increases the receive buffer size to HCI_MAX_FRAME_SIZE
which improves the RX throughput considerably.
Tested against BRM/Atheros/CSR USB Dongles with PAN profile using
iperf and chariot. This gave significant (around 40%) increase
in performance (increased from 0.8 to 1.5 Mb/s in Sheld room)
Signed-off-by: Vikram Kandukuri <vikram.kandukuri@atheros.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth')
| -rw-r--r-- | drivers/bluetooth/btusb.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index e70c57ee4221..124db8cd144c 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -301,7 +301,7 @@ static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) struct urb *urb; unsigned char *buf; unsigned int pipe; - int err, size; + int err, size = HCI_MAX_FRAME_SIZE; BT_DBG("%s", hdev->name); @@ -312,8 +312,6 @@ static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags) if (!urb) return -ENOMEM; - size = le16_to_cpu(data->bulk_rx_ep->wMaxPacketSize); - buf = kmalloc(size, mem_flags); if (!buf) { usb_free_urb(urb); |