Hi Nikita, Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on bpf-next/master] url: https://github.com/0day-ci/linux/commits/Nikita-V-Shirokov/introduction-of-bpf_xdp_adjust_tail/20180417-211905 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: i386-randconfig-s1-201815 (attached as .config) compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): net/core/filter.c: In function '____bpf_xdp_adjust_tail': >> net/core/filter.c:2726:2: warning: ISO C90 forbids mixed declarations and >> code [-Wdeclaration-after-statement] void *data_end = xdp->data_end + offset; ^~~~ vim +2726 net/core/filter.c 2719 2720 BPF_CALL_2(bpf_xdp_adjust_tail, struct xdp_buff *, xdp, int, offset) 2721 { 2722 /* only shrinking is allowed for now. */ 2723 if (unlikely(offset > 0)) 2724 return -EINVAL; 2725 > 2726 void *data_end = xdp->data_end + offset; 2727 2728 if (unlikely(data_end < xdp->data + ETH_HLEN)) 2729 return -EINVAL; 2730 2731 xdp->data_end = data_end; 2732 2733 return 0; 2734 } 2735 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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