From mboxrd@z Thu Jan  1 00:00:00 1970
From: Or Gerlitz <ogerlitz@mellanox.com>
Subject: Re: link failures with bpf_map_xxx_elem_proto calls from net/core/filiter.c
Date: Wed, 4 Mar 2015 10:56:50 +0200
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Cc: Alexei Starovoitov <ast@plumgrid.com>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>
To: Daniel Borkmann <daniel@iogearbox.net>
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On 3/4/2015 10:42 AM, Or Gerlitz wrote:
> Hi Daniel,
>
> With net-next (and probably net or Linus tree too), I am getting these 
> link failures
>
> net/built-in.o:(.rodata+0x2210): undefined reference to 
> `bpf_map_lookup_elem_proto'
> net/built-in.o:(.rodata+0x2218): undefined reference to 
> `bpf_map_update_elem_proto'
> net/built-in.o:(.rodata+0x2220): undefined reference to 
> `bpf_map_delete_elem_proto'
>

suddenly solved after make clean and make, probably a leftover from the 
fact that net-next was rebased tonight from 3.19 to 4.0-rc2

Or.