| Message ID | 1333041315-4303-1-git-send-email-rabin@rab.in |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
From: Rabin Vincent <rabin@rab.in> Date: Thu, 29 Mar 2012 22:45:15 +0530 > Make CDC EEM recalculate the hard_mtu after adjusting the > hard_header_len. > > Without this, usbnet adjusts the MTU down to 1494 bytes, and the host is > unable to receive standard 1500-byte frames from the device. > > Tested with the Linux USB Ethernet gadget. > > Cc: Oliver Neukum <oliver@neukum.name> > Signed-off-by: Rabin Vincent <rabin@rab.in> Applied and queued up for -stable, thanks. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/usb/cdc_eem.c b/drivers/net/usb/cdc_eem.c index 882f53f..82d43b2 100644 --- a/drivers/net/usb/cdc_eem.c +++ b/drivers/net/usb/cdc_eem.c @@ -93,6 +93,7 @@ static int eem_bind(struct usbnet *dev, struct usb_interface *intf) /* no jumbogram (16K) support for now */ dev->net->hard_header_len += EEM_HEAD + ETH_FCS_LEN; + dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; return 0; }
Make CDC EEM recalculate the hard_mtu after adjusting the hard_header_len. Without this, usbnet adjusts the MTU down to 1494 bytes, and the host is unable to receive standard 1500-byte frames from the device. Tested with the Linux USB Ethernet gadget. Cc: Oliver Neukum <oliver@neukum.name> Signed-off-by: Rabin Vincent <rabin@rab.in> --- drivers/net/usb/cdc_eem.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)