[josef-btrfs:inet-rework 6/6] net/ipv4/inet_connection_sock.c:256:32: error: 'const struct inet_connection_sock_af_ops' has no member named 'rcv_saddr_equal'

[kbuild test robot <fengguang.wu@xxxxxxxxx>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next.git inet-rework
head:   749825bc60f7224225ced1dbed77d3cc2b0bd72f
commit: 749825bc60f7224225ced1dbed77d3cc2b0bd72f [6/6] inet: reset tb->fastreuseport when adding a reuseport sk
config: i386-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        git checkout 749825bc60f7224225ced1dbed77d3cc2b0bd72f
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   net/ipv4/inet_connection_sock.c: In function 'sk_reuseport_match':
>> net/ipv4/inet_connection_sock.c:256:32: error: 'const struct inet_connection_sock_af_ops' has no member named 'rcv_saddr_equal'
     if (!inet_csk(sk)->icsk_af_ops->rcv_saddr_equal(sk, sk2, true))
                                   ^~

vim +256 net/ipv4/inet_connection_sock.c

   250		 * without fastreuseport and then was reset, as we can only know that
   251		 * the fastsock has no potential bind conflicts with the rest of the
   252		 * possible socks on the owners list.
   253		 */
   254		if (tb->fastreuseport == FASTREUSEPORT_ANY)
   255			return 1;
 > 256		if (!inet_csk(sk)->icsk_af_ops->rcv_saddr_equal(sk, sk2, true))
   257			return 0;
   258		return 1;
   259	}

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