diff options
| author | Bjørn Mork <bjorn@mork.no> | 2013-11-01 11:16:52 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-11-02 02:02:03 -0400 |
| commit | 43c87f78388443e3bf6c73c05574bfa15b994f0a (patch) | |
| tree | 49bfc39c2ec45139d95e60288accab56dcda98e2 /drivers/net/usb/cdc_ncm.c | |
| parent | 0e2c4a00547a406aeb3bb5a3007cc90a62104980 (diff) | |
net: cdc_ncm: set correct dev->hard_mtu
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@gmail.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/usb/cdc_ncm.c')
| -rw-r--r-- | drivers/net/usb/cdc_ncm.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c index 8fc1a06604aa..c40f742f6200 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; |