Re: [PATCH bpf v2] selftests: bpf: fix compiler warning

[Song Liu]

On Tue, May 28, 2019 at 12:35 PM Alakesh Haloi <alakesh.haloi@xxxxxxxxx> wrote:
>
> Add missing header file following compiler warning
>
> prog_tests/flow_dissector.c: In function âtx_tapâ:
> prog_tests/flow_dissector.c:175:9: warning: implicit declaration of function âwritevâ; did you mean âwriteâ? [-Wimplicit-function-declaration]
>   return writev(fd, iov, ARRAY_SIZE(iov));
>          ^~~~~~
>          write
>
> Fixes: 0905beec9f52 ("selftests/bpf: run flow dissector tests in skb-less mode")
> Signed-off-by: Alakesh Haloi <alakesh.haloi@xxxxxxxxx>

Acked-by: Song Liu <songliubraving@xxxxxx>

Thanks for the fix!

> ---
>  tools/testing/selftests/bpf/prog_tests/flow_dissector.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
> index fbd1d88a6095..c938283ac232 100644
> --- a/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
> +++ b/tools/testing/selftests/bpf/prog_tests/flow_dissector.c
> @@ -3,6 +3,7 @@
>  #include <error.h>
>  #include <linux/if.h>
>  #include <linux/if_tun.h>
> +#include <sys/uio.h>
>
>  #define CHECK_FLOW_KEYS(desc, got, expected)                           \
>         CHECK_ATTR(memcmp(&got, &expected, sizeof(got)) != 0,           \
> --
> 2.17.1
>