diff options
| author | Rabin Vincent <rabin@rab.in> | 2012-03-29 07:15:15 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-13 08:14:05 -0700 |
| commit | 4e8d37e8fccbe4a558062e4b6416dbc23dcdd8ad (patch) | |
| tree | 3258ac192698443f2e492d980111d88db9bde652 | |
| parent | cea90bebaab0e962cf9a954ef41cc1893da7b3bf (diff) | |
| download | lwn-4e8d37e8fccbe4a558062e4b6416dbc23dcdd8ad.tar.gz lwn-4e8d37e8fccbe4a558062e4b6416dbc23dcdd8ad.zip | |
net: usb: cdc_eem: fix mtu
[ 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>
| -rw-r--r-- | drivers/net/usb/cdc_eem.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/usb/cdc_eem.c b/drivers/net/usb/cdc_eem.c index 882f53f708df..82d43b214f93 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; } |