Re: [U-Boot] [PATCH] net: Mark the ip_udp_hdr struct as packed

19 Jul 2017


      On Wed, Jul 12, 2017 at 9:34 AM, Maxime Ripard
maxime.ripard@free-electrons.com wrote:
...
The -mno-unaligned-access flag used on ARM to prevent GCC from generating
unaligned accesses (obviously) will only do so on packed structures.
It seems like gcc 7.1 is a bit stricter than previous gcc versions on this,
and using it lead to data abort for unaligned accesses when generating
network traffic.
Fix this by adding the packed attribute to the ip_udp_hdr structure in
order to let GCC do its job.
Signed-off-by: Maxime Ripard maxime.ripard@free-electrons.com
Acked-by: Joe Hershberger joe.hershberger@ni.com