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.orishko@xxxxxxxxx> Signed-off-by: Bjørn Mork <bjorn@xxxxxxx> --- 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 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
