usbnet use the hard_mtu value for sizing the tx queue and nothing
else. We will be transmitting buffers of up to tx_max size, so
that's the proper value to give usbnet.
The individual datagram size is completely irrelevant here.
Cc: Alexey Orishko <alexey.oris...@gmail.com>
Signed-off-by: Bjørn Mork <bj...@mork.no>
---
drivers/net/usb/cdc_ncm.c | 9 ++-------
1 file changed, 2 insertions(+), 7 deletions(-)
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 8fc1a06..c40f742 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -404,13 +404,6 @@ int cdc_ncm_bind_common(struct usbnet *dev, struct
usb_interface *intf, u8 data_
ctx->ether_desc =
(const struct usb_cdc_ether_desc *)buf;
- dev->hard_mtu =
- le16_to_cpu(ctx->ether_desc->wMaxSegmentSize);
-
- if (dev->hard_mtu < CDC_NCM_MIN_DATAGRAM_SIZE)
- dev->hard_mtu = CDC_NCM_MIN_DATAGRAM_SIZE;
- else if (dev->hard_mtu > CDC_NCM_MAX_DATAGRAM_SIZE)
- dev->hard_mtu = CDC_NCM_MAX_DATAGRAM_SIZE;
break;
case USB_CDC_NCM_TYPE:
@@ -485,6 +478,8 @@ advance:
dev_info(&dev->udev->dev, "MAC-Address: %pM\n",
dev->net->dev_addr);
}
+ /* usbnet use these values for sizing tx/rx queues */
+ dev->hard_mtu = ctx->tx_max;
dev->rx_urb_size = ctx->rx_max;
return 0;
--
1.7.10.4
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