Hi Karsten,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/master]

url:    https://github.com/0day-ci/linux/commits/Karsten-Graul/net-smc-extend-diagnostic-netlink-interface/20201103-034113
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git c43fd36f7fec6c227c5e8a8ddd7d3fe97472182f
config: x86_64-randconfig-a012-20201102 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/e4b66f234e85d211cd81aa99c901035874ebc469
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Karsten-Graul/net-smc-extend-diagnostic-netlink-interface/20201103-034113
        git checkout e4b66f234e85d211cd81aa99c901035874ebc469
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from <command-line>:32:
>> ./usr/include/linux/smc_diag.h:135:14: error: 'IFNAMSIZ' undeclared here (not in a function)
     135 |  __u8 netdev[IFNAMSIZ];  /* ethernet device name */
         |              ^~~~~~~~

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0-DAY CI Kernel Test Service, Intel Corporation
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