netdev - Re: [PATCH v2] vrf: Fix conntrack-dnat conflict in vrf-device PREROUTING hook

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Date:   Mon, 14 Jan 2019 04:14:41 +0800
From:   kbuild test robot <lkp@...el.com>
To:     wenxu@...oud.cn
Cc:     kbuild-all@...org, dsahern@...il.com, netdev@...r.kernel.org
Subject: Re: [PATCH v2] vrf: Fix conntrack-dnat conflict in vrf-device
 PREROUTING hook

Hi wenxu,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on net-next/master]
[also build test ERROR on v5.0-rc1 next-20190111]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/wenxu-ucloud-cn/vrf-Fix-conntrack-dnat-conflict-in-vrf-device-PREROUTING-hook/20190111-151714
config: i386-randconfig-b0-01140058 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   In file included from include/net/netfilter/nf_conntrack.h:25:0,
                    from drivers/net/vrf.c:40:
   include/linux/netfilter/nf_conntrack_proto_gre.h:31:22: error: field 'nf' has incomplete type
     struct nf_proto_net nf;
                         ^
   In file included from drivers/net/vrf.c:40:0:
   include/net/netfilter/nf_conntrack.h:69:22: error: field 'ct_general' has incomplete type
     struct nf_conntrack ct_general;
                         ^
   include/net/netfilter/nf_conntrack.h: In function 'nf_ct_get':
   include/net/netfilter/nf_conntrack.h:158:15: error: 'const struct sk_buff' has no member named '_nfct'
     *ctinfo = skb->_nfct & NFCT_INFOMASK;
                  ^
   include/net/netfilter/nf_conntrack.h:160:31: error: 'const struct sk_buff' has no member named '_nfct'
     return (struct nf_conn *)(skb->_nfct & NFCT_PTRMASK);
                                  ^
   include/net/netfilter/nf_conntrack.h: In function 'nf_ct_put':
>> include/net/netfilter/nf_conntrack.h:167:2: error: implicit declaration of function 'nf_conntrack_put' [-Werror=implicit-function-declaration]
     nf_conntrack_put(&ct->ct_general);
     ^
   include/net/netfilter/nf_conntrack.h: In function 'nf_ct_set':
   include/net/netfilter/nf_conntrack.h:324:5: error: 'struct sk_buff' has no member named '_nfct'
     skb->_nfct = (unsigned long)ct | info;
        ^
   include/net/netfilter/nf_conntrack.h: In function 'nf_ct_get':
   include/net/netfilter/nf_conntrack.h:161:1: warning: control reaches end of non-void function [-Wreturn-type]
    }
    ^
   cc1: some warnings being treated as errors

vim +/nf_conntrack_put +167 include/net/netfilter/nf_conntrack.h

303223092 Florian Westphal 2017-01-23  153  
9fb9cbb10 Yasuyuki Kozakai 2005-11-09  154  /* Return conntrack_info and tuple hash for given skb. */
9fb9cbb10 Yasuyuki Kozakai 2005-11-09  155  static inline struct nf_conn *
9fb9cbb10 Yasuyuki Kozakai 2005-11-09  156  nf_ct_get(const struct sk_buff *skb, enum ip_conntrack_info *ctinfo)
9fb9cbb10 Yasuyuki Kozakai 2005-11-09  157  {
a9e419dc7 Florian Westphal 2017-01-23 @158  	*ctinfo = skb->_nfct & NFCT_INFOMASK;
a9e419dc7 Florian Westphal 2017-01-23  159  
a9e419dc7 Florian Westphal 2017-01-23  160  	return (struct nf_conn *)(skb->_nfct & NFCT_PTRMASK);
9fb9cbb10 Yasuyuki Kozakai 2005-11-09  161  }
9fb9cbb10 Yasuyuki Kozakai 2005-11-09  162  
9fb9cbb10 Yasuyuki Kozakai 2005-11-09  163  /* decrement reference count on a conntrack */
9fb9cbb10 Yasuyuki Kozakai 2005-11-09  164  static inline void nf_ct_put(struct nf_conn *ct)
9fb9cbb10 Yasuyuki Kozakai 2005-11-09  165  {
44d6e2f27 Varsha Rao       2017-08-30  166  	WARN_ON(!ct);
9fb9cbb10 Yasuyuki Kozakai 2005-11-09 @167  	nf_conntrack_put(&ct->ct_general);
9fb9cbb10 Yasuyuki Kozakai 2005-11-09  168  }
9fb9cbb10 Yasuyuki Kozakai 2005-11-09  169  

:::::: The code at line 167 was first introduced by commit
:::::: 9fb9cbb1082d6b31fb45aa1a14432449a0df6cf1 [NETFILTER]: Add nf_conntrack subsystem.

:::::: TO: Yasuyuki Kozakai <yasuyuki.kozakai@...hiba.co.jp>
:::::: CC: David S. Miller <davem@...emloft.net>

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