From: Alan Cox <a...@linux.intel.com> Date: Fri, 26 Feb 2016 14:44:34 +0000
> On Thu, 2016-02-25 at 15:26 -0500, David Miller wrote: >> From: Heikki Hannikainen <he...@hes.iki.fi> >> Date: Thu, 25 Feb 2016 21:36:07 +0200 (EET) >> >> > Commit 9c7077622dd9174 added a check, ll_header_truncated(), which >> > requires that a packet transmitted using sendmsg() with PF_PACKET, >> > SOCK_RAW must be longer than dev->hard_header_len. >> >> Fixed by: >> >> commit 880621c2605b82eb5af91a2c94223df6f5a3fb64 >> Author: Martin Blumenstingl <martin.blumensti...@googlemail.com> >> Date: Sun Nov 22 17:46:09 2015 +0100 >> >> packet: Allow packets with only a header (but no payload) > > The AX.25 case the header is variable length so this still doesn't fix > the regression as far as I can see. Then can you suggest a way to ensure that the user has given us a fully specified link header? Perhaps we can have a netdev_ops callback for this, that variable length header technologies can implement.
