On Thu, Aug 25, 2022 at 11:29:22PM -0600, James Hilliard wrote:
> There is a potential for us to hit a type conflict when including
> netinet/tcp.h with sys/socket.h, we can remove these as they are not
> actually needed.
>
> Fixes errors like:
> In file included from /usr/include/netinet/tcp.h:91,
> from progs/bind4_prog.c:10:
> /home/buildroot/opt/cross/lib/gcc/bpf/13.0.0/include/stdint.h:34:23: error: conflicting types for 'int8_t'; have 'char'
> 34 | typedef __INT8_TYPE__ int8_t;
> | ^~~~~~
> In file included from /usr/include/x86_64-linux-gnu/sys/types.h:155,
> from /usr/include/x86_64-linux-gnu/bits/socket.h:29,
> from /usr/include/x86_64-linux-gnu/sys/socket.h:33,
> from progs/bind4_prog.c:9:
> /usr/include/x86_64-linux-gnu/bits/stdint-intn.h:24:18: note: previous declaration of 'int8_t' with type 'int8_t' {aka 'signed char'}
> 24 | typedef __int8_t int8_t;
> | ^~~~~~
> /home/buildroot/opt/cross/lib/gcc/bpf/13.0.0/include/stdint.h:43:24: error: conflicting types for 'int64_t'; have 'long int'
> 43 | typedef __INT64_TYPE__ int64_t;
> | ^~~~~~~
> /usr/include/x86_64-linux-gnu/bits/stdint-intn.h:27:19: note: previous declaration of 'int64_t' with type 'int64_t' {aka 'long long int'}
> 27 | typedef __int64_t int64_t;
> | ^~~~~~~
> make: *** [Makefile:537: /home/buildroot/bpf-next/tools/testing/selftests/bpf/bpf_gcc/bind4_prog.o] Error 1
>
> Signed-off-by: James Hilliard <james.hilliard1@xxxxxxxxx>
> ---
> Changes v1 -> v2:
> - just remove netinet/tcp.h and sys/socket.h
> ---
> tools/testing/selftests/bpf/progs/bind4_prog.c | 2 --
> tools/testing/selftests/bpf/progs/bind6_prog.c | 2 --
> 2 files changed, 4 deletions(-)
>
> diff --git a/tools/testing/selftests/bpf/progs/bind4_prog.c b/tools/testing/selftests/bpf/progs/bind4_prog.c
> index 474c6a62078a..a487f60b73ac 100644
> --- a/tools/testing/selftests/bpf/progs/bind4_prog.c
> +++ b/tools/testing/selftests/bpf/progs/bind4_prog.c
> @@ -6,8 +6,6 @@
> #include <linux/bpf.h>
> #include <linux/in.h>
> #include <linux/in6.h>
> -#include <sys/socket.h>
> -#include <netinet/tcp.h>
> #include <linux/if.h>
Are the AF_INET and SOCK_STREAM coming from linux/if.h somehow
and they are not from indirectly including sys/socket.h ?
If the program does not need if.h, what should it use ?
There are other progs in selftest/bpf that include sys/socket.h
and they have no issue ?
