uapi: define DIV_ROUND_UP for userland
authorNicolas Dichtel <nicolas.dichtel@6wind.com>
Fri, 4 Mar 2016 10:52:16 +0000 (11:52 +0100)
committerDavid S. Miller <davem@davemloft.net>
Fri, 4 Mar 2016 21:10:36 +0000 (16:10 -0500)
commitb5d3755a22e0cc4c369c0985aef0c52c2477c1e7
tree2fef71a2d85dde83950727068fd890a4f10c8be6
parent9b2f8f616a8d992243be31ff47d3f64031bf168a
uapi: define DIV_ROUND_UP for userland

DIV_ROUND_UP is defined in linux/kernel.h only for the kernel.
When ethtool.h is included by a userland app, we got the following error:

include/linux/ethtool.h:1218:8: error: variably modified 'queue_mask' at file scope
  __u32 queue_mask[DIV_ROUND_UP(MAX_NUM_QUEUE, 32)];
        ^

Let's add a common definition in uapi and use it everywhere.

Fixes: ac2c7ad0e5d6 ("net/ethtool: introduce a new ioctl for per queue setting")
CC: Kan Liang <kan.liang@intel.com>
Suggested-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/kernel.h
include/uapi/linux/ethtool.h
include/uapi/linux/kernel.h
include/uapi/linux/mroute6.h