Re: randconfig build error with next-20140523, in net/bridge/br_netfilter.c

[David Miller <davem@davemloft.net>]

From: Jim Davis <jim.epost@gmail.com>
Date: Fri, 23 May 2014 13:06:48 -0700

> Building with the attached random configuration file,
> 
> warning: (BRIDGE_NF_EBTABLES) selects NETFILTER_XTABLES which has
> unmet direct dependencies (NET && INET && NETFILTER)
> warning: (NF_TABLES_BRIDGE && BRIDGE_NF_EBTABLES) selects
> BRIDGE_NETFILTER which has unmet direct dependencies (NET && BRIDGE &&
> NETFILTER && INET && NETFILTER_ADVANCED)
> 
> net/built-in.o: In function `br_parse_ip_options':
> br_netfilter.c:(.text+0x4a5ba): undefined reference to `ip_options_compile'
> br_netfilter.c:(.text+0x4a5ed): undefined reference to `ip_options_rcv_srr'
> net/built-in.o: In function `br_nf_pre_routing_finish':
> br_netfilter.c:(.text+0x4a8a4): undefined reference to `ip_route_input_noref'
> br_netfilter.c:(.text+0x4a987): undefined reference to `ip_route_output_flow'
> make: *** [vmlinux] Error 1

This problem was introduced by:

commit f5efc696cc711021cc73e7543cc3038e58459707
Author: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
Date:   Mon Apr 14 15:41:28 2014 +0300

    netfilter: nf_tables: Add meta expression key for bridge interface name

You can't use "select BRIDGE_NETFILTER" for NF_TABLES_BRIDGE, because
it is BRIDGE_NETFILTER which provides the proper dependencies, and
in particular the crucial "INET" dependency.

When you use a hammer like "select" it bypasses the dependencies which
are usually enforced by BRIDGE_NETFILTER and causes the problems we
are seeing here.

Pablo please fix this, thank you.