Re: [PATCH] bpf: selftests: Fix warning in flow_dissector

[Stanislav Fomichev]

On 06/13, Arthur Fabre wrote:
> Building the userspace part of the flow_dissector resulted in:
> 
> prog_tests/flow_dissector.c: In function âtx_tapâ:
> prog_tests/flow_dissector.c:176:9: warning: implicit declaration
> of function âwritevâ; did you mean âwriteâ? [-Wimplicit-function-declaration]
>   return writev(fd, iov, ARRAY_SIZE(iov));
>          ^~~~~~
>          write
> 
> Include <sys/uio.h> to fix this.
Wasn't it fixed already?

See
https://lore.kernel.org/netdev/20190528190218.GA6950@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/

> Signed-off-by: Arthur Fabre <afabre@xxxxxxxxxxxxxx>
> ---
>  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,		\
> -- 
> 2.20.1
>