There is a potential for us to hit a type conflict when including netinet/tcp.h and sys/socket.h, we can replace both of these includes with linux/tcp.h and bpf_tcp_helpers.h to avoid this conflict.
Fixes the following error: In file included from /usr/include/netinet/tcp.h:91, from progs/connect4_prog.c:11: /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/connect4_prog.c:10: /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; | ^~~~~~~
Signed-off-by: James Hilliard james.hilliard1@gmail.com --- Changes v1 -> v2: - use bpf_tcp_helpers.h so we can use SOL_TCP --- tools/testing/selftests/bpf/progs/connect4_prog.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/bpf/progs/connect4_prog.c b/tools/testing/selftests/bpf/progs/connect4_prog.c index b241932911db..23d85f5027d3 100644 --- a/tools/testing/selftests/bpf/progs/connect4_prog.c +++ b/tools/testing/selftests/bpf/progs/connect4_prog.c @@ -7,13 +7,13 @@ #include <linux/bpf.h> #include <linux/in.h> #include <linux/in6.h> -#include <sys/socket.h> -#include <netinet/tcp.h> +#include <linux/tcp.h> #include <linux/if.h> #include <errno.h>
#include <bpf/bpf_helpers.h> #include <bpf/bpf_endian.h> +#include "bpf_tcp_helpers.h"
#define SRC_REWRITE_IP4 0x7f000004U #define DST_REWRITE_IP4 0x7f000001U