Hi, Thank you for the patch! Yet something to improve: [auto build test ERROR on net-next/master] url: https://github.com/intel-lab-lkp/linux/commits/menglong8-dong-gmail-com/reorganize-the-code-of-the-enum-skb_drop_reason/20220527-152050 base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 7e062cda7d90543ac8c7700fc7c5527d0c0f22ad config: x86_64-randconfig-a013 (https://download.01.org/0day-ci/archive/20220527/202205272154.7zdeh6A3-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-1) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/0a1ac892edba0134b4891c9e61e06d462f8262a9 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review menglong8-dong-gmail-com/reorganize-the-code-of-the-enum-skb_drop_reason/20220527-152050 git checkout 0a1ac892edba0134b4891c9e61e06d462f8262a9 # save the config file make W=1 ARCH=x86_64 If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from net/core/skbuff.c:85: ./net/core/dropreason_str.h:1:1: error: stray '\' in program 1 | \n#define __DEFINE_SKB_DROP_REASON(FN) \ | ^ ./net/core/dropreason_str.h:1:3: error: stray '#' in program 1 | \n#define __DEFINE_SKB_DROP_REASON(FN) \ | ^ >> ./net/core/dropreason_str.h:1:2: error: unknown type name 'n' 1 | \n#define __DEFINE_SKB_DROP_REASON(FN) \ | ^ >> ./net/core/dropreason_str.h:1:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before '__DEFINE_SKB_DROP_REASON' 1 | \n#define __DEFINE_SKB_DROP_REASON(FN) \ | ^~~~~~~~~~~~~~~~~~~~~~~~ >> net/core/skbuff.c:101:9: error: implicit declaration of function '__DEFINE_SKB_DROP_REASON' [-Werror=implicit-function-declaration] 101 | __DEFINE_SKB_DROP_REASON(FN) | ^~~~~~~~~~~~~~~~~~~~~~~~ >> net/core/skbuff.c:101:34: error: 'FN' undeclared here (not in a function) 101 | __DEFINE_SKB_DROP_REASON(FN) | ^~ cc1: some warnings being treated as errors -- 0-DAY CI Kernel Test Service https://01.org/lkp