bpf: selftests build error in sockmap_basic.c

Fix following build error. We could push a tcp.h header into one of the
include paths, but I think its easy enough to simply pull in the three
defines we need here. If we end up using more of tcp.h at some point
we can pull it in later.

/home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c: In function ‘connected_socket_v4’:
/home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:20:11: error: ‘TCP_REPAIR_ON’ undeclared (first use in this function)
  repair = TCP_REPAIR_ON;
           ^
/home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:20:11: note: each undeclared identifier is reported only once for each function it appears in
/home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:29:11: error: ‘TCP_REPAIR_OFF_NO_WP’ undeclared (first use in this function)
  repair = TCP_REPAIR_OFF_NO_WP;

Then with fix,

$ ./test_progs -n 44
#44/1 sockmap create_update_free:OK
#44/2 sockhash create_update_free:OK
#44 sockmap_basic:OK

Fixes: 5d3919a953c3c ("selftests/bpf: Test freeing sockmap/sockhash with a socket in it")
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
---
 .../selftests/bpf/prog_tests/sockmap_basic.c       |    5 +++++
 1 file changed, 5 insertions(+)

On Mon, Feb 10, 2020 at 05:44 AM GMT, John Fastabend wrote:
> Fix following build error. We could push a tcp.h header into one of the
> include paths, but I think its easy enough to simply pull in the three
> defines we need here. If we end up using more of tcp.h at some point
> we can pull it in later.
>
> /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c: In function ‘connected_socket_v4’:
> /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:20:11: error: ‘TCP_REPAIR_ON’ undeclared (first use in this function)
>   repair = TCP_REPAIR_ON;
>            ^
> /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:20:11: note: each undeclared identifier is reported only once for each function it appears in
> /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:29:11: error: ‘TCP_REPAIR_OFF_NO_WP’ undeclared (first use in this function)
>   repair = TCP_REPAIR_OFF_NO_WP;
>
> Then with fix,
>
> $ ./test_progs -n 44
> #44/1 sockmap create_update_free:OK
> #44/2 sockhash create_update_free:OK
> #44 sockmap_basic:OK
>
> Fixes: 5d3919a953c3c ("selftests/bpf: Test freeing sockmap/sockhash with a socket in it")
> Signed-off-by: John Fastabend <john.fastabend@gmail.com>
> ---
>  .../selftests/bpf/prog_tests/sockmap_basic.c       |    5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
> index 07f5b46..aa43e0b 100644
> --- a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
> +++ b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
> @@ -3,6 +3,11 @@
>
>  #include "test_progs.h"
>
> +#define TCP_REPAIR		19	/* TCP sock is under repair right now */
> +
> +#define TCP_REPAIR_ON		1
> +#define TCP_REPAIR_OFF_NO_WP	-1	/* Turn off without window probes */
> +
>  static int connected_socket_v4(void)
>  {
>  	struct sockaddr_in addr = {

Neat, I haven't thought of that. Thank you for fixing up my mistake.

Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>

On Mon, Feb 10, 2020 at 1:59 AM Jakub Sitnicki <jakub@cloudflare.com> wrote:
>
> On Mon, Feb 10, 2020 at 05:44 AM GMT, John Fastabend wrote:
> > Fix following build error. We could push a tcp.h header into one of the
> > include paths, but I think its easy enough to simply pull in the three
> > defines we need here. If we end up using more of tcp.h at some point
> > we can pull it in later.
> >
> > /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c: In function ‘connected_socket_v4’:
> > /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:20:11: error: ‘TCP_REPAIR_ON’ undeclared (first use in this function)
> >   repair = TCP_REPAIR_ON;
> >            ^
> > /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:20:11: note: each undeclared identifier is reported only once for each function it appears in
> > /home/john/git/bpf/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c:29:11: error: ‘TCP_REPAIR_OFF_NO_WP’ undeclared (first use in this function)
> >   repair = TCP_REPAIR_OFF_NO_WP;
> >
> > Then with fix,
> >
> > $ ./test_progs -n 44
> > #44/1 sockmap create_update_free:OK
> > #44/2 sockhash create_update_free:OK
> > #44 sockmap_basic:OK
> >
> > Fixes: 5d3919a953c3c ("selftests/bpf: Test freeing sockmap/sockhash with a socket in it")
> > Signed-off-by: John Fastabend <john.fastabend@gmail.com>
> > ---
> >  .../selftests/bpf/prog_tests/sockmap_basic.c       |    5 +++++
> >  1 file changed, 5 insertions(+)
> >
> > diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
> > index 07f5b46..aa43e0b 100644
> > --- a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
> > +++ b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
> > @@ -3,6 +3,11 @@
> >
> >  #include "test_progs.h"
> >
> > +#define TCP_REPAIR           19      /* TCP sock is under repair right now */
> > +
> > +#define TCP_REPAIR_ON                1
> > +#define TCP_REPAIR_OFF_NO_WP -1      /* Turn off without window probes */
> > +
> >  static int connected_socket_v4(void)
> >  {
> >       struct sockaddr_in addr = {
>
> Neat, I haven't thought of that. Thank you for fixing up my mistake.
>
> Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>

I also think this is the better approach.
Applied. Thanks.