[PATCH] selftests: bpf: fix compiler warning

[PATCH] selftests: bpf: fix compiler warning

[Alakesh Haloi]

Add missing header file following compiler warning

prog_tests/flow_dissector.c: In function ‘tx_tap’:
prog_tests/flow_dissector.c:175:9: warning: implicit declaration of function ‘writev’; did you mean ‘write’? [-Wimplicit-function-declaration]
  return writev(fd, iov, ARRAY_SIZE(iov));
         ^~~~~~
         write

Signed-off-by: Alakesh Haloi <alakesh.haloi@gmail.com>
---
 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

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

[Song Liu]

On Thu, May 23, 2019 at 5:31 PM Alakesh Haloi <alakesh.haloi@gmail.com> wrote:
>
> Add missing header file following compiler warning
>
> prog_tests/flow_dissector.c: In function ‘tx_tap’:
> prog_tests/flow_dissector.c:175:9: warning: implicit declaration of function ‘writev’; did you mean ‘write’? [-Wimplicit-function-declaration]
>   return writev(fd, iov, ARRAY_SIZE(iov));
>          ^~~~~~
>          write
>
> Signed-off-by: Alakesh Haloi <alakesh.haloi@gmail.com>

The patch looks good. Please add a "Fixes" tag, so the fix
can be back ported properly.

Also, please specify which tree the patch should be applied
with [PATCH bpf] or [PATCH bpf-next].

Thanks,
Song




> ---
>  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
>

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

[Alakesh Haloi]

On Tue, May 28, 2019 at 09:45:14AM -0700, Song Liu wrote:
> On Thu, May 23, 2019 at 5:31 PM Alakesh Haloi <alakesh.haloi@gmail.com> wrote:
> >
> > Add missing header file following compiler warning
> >
> > prog_tests/flow_dissector.c: In function ‘tx_tap’:
> > prog_tests/flow_dissector.c:175:9: warning: implicit declaration of function ‘writev’; did you mean ‘write’? [-Wimplicit-function-declaration]
> >   return writev(fd, iov, ARRAY_SIZE(iov));
> >          ^~~~~~
> >          write
> >
> > Signed-off-by: Alakesh Haloi <alakesh.haloi@gmail.com>
> 
> The patch looks good. Please add a "Fixes" tag, so the fix
> can be back ported properly.
> 
> Also, please specify which tree the patch should be applied
> with [PATCH bpf] or [PATCH bpf-next].
> 
> Thanks,
> Song
> 

Thanks for reviewing the patch. My apologies for not following the
rules. I have sent an updated patch after adding Fixes: tag and
modifying the subject to reflect that it is for bpf tree.
The updated patch is here https://lkml.org/lkml/2019/5/28/904

Thanks
Alakesh
> 
> 
> 
> > ---
> >  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
> >