netdev - Re: [PATCH bpf-next v7 2/6] bpf: implement BPF_LWT_ENCAP_IP mode in bpf_lwt_push

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Date:   Thu, 7 Feb 2019 21:43:58 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Peter Oskolkov <posk@...gle.com>
Cc:     kbuild-all@...org, Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>, netdev@...r.kernel.org,
        Peter Oskolkov <posk@...k.io>, David Ahern <dsahern@...il.com>,
        Willem de Bruijn <willemb@...gle.com>,
        Peter Oskolkov <posk@...gle.com>
Subject: Re: [PATCH bpf-next v7 2/6] bpf: implement BPF_LWT_ENCAP_IP mode in
 bpf_lwt_push_encap

Hi Peter,

Thank you for the patch! Yet something to improve:

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

url:    https://github.com/0day-ci/linux/commits/Peter-Oskolkov/bpf-add-BPF_LWT_ENCAP_IP-option-to-bpf_lwt_push_encap/20190207-205725
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: i386-randconfig-l1-02071408 (attached as .config)
compiler: gcc-5 (Debian 5.5.0-3) 5.4.1 20171010
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   net//core/filter.c: In function 'bpf_push_ip_encap':
>> net//core/filter.c:4808:9: error: implicit declaration of function 'bpf_lwt_push_ip_encap' [-Werror=implicit-function-declaration]
     return bpf_lwt_push_ip_encap(skb, hdr, len, ingress);
            ^
   net//core/filter.c: At top level:
   net//core/filter.c:4805:12: warning: 'bpf_push_ip_encap' defined but not used [-Wunused-function]
    static int bpf_push_ip_encap(struct sk_buff *skb, void *hdr, u32 len,
               ^
   cc1: some warnings being treated as errors

vim +/bpf_lwt_push_ip_encap +4808 net//core/filter.c

  4804	
  4805	static int bpf_push_ip_encap(struct sk_buff *skb, void *hdr, u32 len,
  4806				     bool ingress)
  4807	{
> 4808		return bpf_lwt_push_ip_encap(skb, hdr, len, ingress);
  4809	}
  4810	

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0-DAY kernel test infrastructure                Open Source Technology Center
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