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Date:   Tue, 19 May 2020 20:55:57 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Roopa Prabhu <roopa@...ulusnetworks.com>, dsahern@...il.com,
        davem@...emloft.net
Cc:     kbuild-all@...ts.01.org, netdev@...r.kernel.org,
        nikolay@...ulusnetworks.com, jiri@...lanox.com,
        idosch@...lanox.com, petrm@...lanox.com
Subject: Re: [PATCH net-next 3/6] vxlan: ecmp support for mac fdb entries

Hi Roopa,

I love your patch! Yet something to improve:

[auto build test ERROR on net-next/master]
[also build test ERROR on net/master kselftest/next sparc-next/master linus/master v5.7-rc6 next-20200518]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Roopa-Prabhu/Support-for-fdb-ECMP-nexthop-groups/20200519-185605
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 5cdfe8306631b2224e3f81fc5a1e2721c7a1948b
config: sh-polaris_defconfig (attached as .config)
compiler: sh4-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=sh 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@...el.com>

All error/warnings (new ones prefixed by >>, old ones prefixed by <<):

In file included from net/ipv4/ip_tunnel_core.c:38:
include/net/vxlan.h: In function 'vxlan_fdb_nh_path_select':
>> include/net/vxlan.h:496:8: error: implicit declaration of function 'nexthop_path_fdb_result' [-Werror=implicit-function-declaration]
496 |  nhc = nexthop_path_fdb_result(nh, hash);
|        ^~~~~~~~~~~~~~~~~~~~~~~
>> include/net/vxlan.h:496:6: warning: assignment to 'struct fib_nh_common *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
496 |  nhc = nexthop_path_fdb_result(nh, hash);
|      ^
cc1: some warnings being treated as errors

vim +/nexthop_path_fdb_result +496 include/net/vxlan.h

   489	
   490	static inline bool vxlan_fdb_nh_path_select(struct nexthop *nh,
   491						    int hash,
   492						    struct vxlan_rdst *rdst)
   493	{
   494		struct fib_nh_common *nhc;
   495	
 > 496		nhc = nexthop_path_fdb_result(nh, hash);
   497		if (unlikely(!nhc))
   498			return false;
   499	
   500		switch (nhc->nhc_gw_family) {
   501		case AF_INET:
   502			rdst->remote_ip.sin.sin_addr.s_addr = nhc->nhc_gw.ipv4;
   503			rdst->remote_ip.sa.sa_family = AF_INET;
   504			break;
   505		case AF_INET6:
   506			rdst->remote_ip.sin6.sin6_addr = nhc->nhc_gw.ipv6;
   507			rdst->remote_ip.sa.sa_family = AF_INET6;
   508			break;
   509		}
   510	
   511		return true;
   512	}
   513	

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

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