Hi Pavel,

I love your patch! Yet something to improve:

[auto build test ERROR on net/master]
[also build test ERROR on net-next/master klassert-ipsec/master horms-ipvs/master linus/master v5.16 next-20220115]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Pavel-Begunkov/udp-optimisation/20220111-092653
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git dd3ca4c5184ea98e40acb8eb293d85b88ea04ee2
config: s390-randconfig-r044-20220113 (https://download.01.org/0day-ci/archive/20220115/202201152052.qh2PH81Z-lkp(a)intel.com/config)
compiler: s390-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/e90b74891027be09208b388b5ff57657fce17c4a
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Pavel-Begunkov/udp-optimisation/20220111-092653
        git checkout e90b74891027be09208b388b5ff57657fce17c4a
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=s390 SHELL=/bin/bash

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 >>, old ones prefixed by <<):

>> ERROR: modpost: "skb_crc32c_csum_help" [net/openvswitch/openvswitch.ko] undefined!

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0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org