usbnet: fix alignment for frames with no ethernet header

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[ Upstream commit a4abd7a80a ]

The qmi_wwan minidriver support a 'raw-ip' mode where frames are
received without any ethernet header. This causes alignment issues
because the skbs allocated by usbnet are "IP aligned".

Fix by allowing minidrivers to disable the additional alignment
offset. This is implemented using a per-device flag, since the same
minidriver also supports 'ethernet' mode.

Fixes: 32f7adf633 ("net: qmi_wwan: support "raw IP" mode")
Reported-and-tested-by: Jay Foster <jay@systech.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Bjørn Mork 2017-12-06 20:21:24 +01:00 • committed by Greg Kroah-Hartman

parent f8e5ef4ea8

commit bea712a8a5

3 changed files with 7 additions and 1 deletions

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include/linux/usb/usbnet.h

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