Messages in this thread Patch in this message | | | Date | Wed, 11 Apr 2012 16:10:40 -0700 | From | Greg KH <> | Subject | [ 05/59] net: usb: cdc_eem: fix mtu |
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3.2-stable review patch. If anyone has any objections, please let me know.
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From: Rabin Vincent <rabin@rab.in>
[ Upstream commit 78fb72f7936c01d5b426c03a691eca082b03f2b9 ]
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> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/net/usb/cdc_eem.c | 1 + 1 file changed, 1 insertion(+)
--- 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, /* 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; }
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