netdev - Re: [PATCH net-next] bpf: samples: Fix compile of test_lru

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Date:   Mon, 28 Nov 2016 19:36:46 +0000
From:   Martin Lau <kafai@...com>
To:     Daniel Borkmann <daniel@...earbox.net>,
        David Ahern <dsa@...ulusnetworks.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     Alexei Starovoitov <ast@...com>
Subject: Re: [PATCH net-next] bpf: samples: Fix compile of test_lru_dist.c


On Mon, Nov 28, 2016 at 10:17:23AM +0100, Daniel Borkmann wrote:
> On 11/28/2016 05:32 AM, David Ahern wrote:
> >Build of samples/bpf on debian/jessie fails with:
> >
> >   HOSTCC  /home/dsa/kernel-3.git/samples/bpf/test_lru_dist.o
> >/home/dsa/kernel-3.git/samples/bpf/test_lru_dist.c: In function ‘main’:
> >/home/dsa/kernel-3.git/samples/bpf/test_lru_dist.c:490:9: error: variable ‘r’ has initializer but incomplete type
> >   struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
> >          ^
> >/home/dsa/kernel-3.git/samples/bpf/test_lru_dist.c:490:21: error: ‘RLIM_INFINITY’ undeclared (first use in this function)
> >   struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
> >                      ^
> >/home/dsa/kernel-3.git/samples/bpf/test_lru_dist.c:490:21: note: each undeclared identifier is reported only once for each function it appears in
> >/home/dsa/kernel-3.git/samples/bpf/test_lru_dist.c:490:9: warning: excess elements in struct initializer
> >   struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
> >          ^
> >/home/dsa/kernel-3.git/samples/bpf/test_lru_dist.c:490:9: warning: (near initialization for ‘r’)
> >/home/dsa/kernel-3.git/samples/bpf/test_lru_dist.c:490:9: warning: excess elements in struct initializer
> >/home/dsa/kernel-3.git/samples/bpf/test_lru_dist.c:490:9: warning: (near initialization for ‘r’)
> >/home/dsa/kernel-3.git/samples/bpf/test_lru_dist.c:490:16: error: storage size of ‘r’ isn’t known
> >   struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
> >
> >Add sys/resource.h to the include list
> >
> >Fixes: 5db58faf989f ("bpf: Add tests for the LRU bpf_htab")
> >Signed-off-by: David Ahern <dsa@...ulusnetworks.com>
> >Cc: Martin KaFai Lau <kafai@...com>
>
> Ran into the same issue, fixed here already:
>
> https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git/commit/?id=e00c7b216f34444252f3771f7d4ed48d4f032636

Thanks for David's report/patch and the earlier Daniel's fix.  Sorry that I
missed it since it compiles fine in my current dev setup (CentOS6).  I
can also reproduce in my newer arch-linux setup.

--Martin