Including the network_helpers.h header in tests can lead to the following build error:

./network_helpers.h: In function ‘csum_tcpudp_magic’: ./network_helpers.h:116:14: error: implicit declaration of function \ ‘htons’ [-Werror=implicit-function-declaration] 116 | s += htons(proto + len);

The error is avoided in many cases thanks to some other headers included earlier and bringing in arpa/inet.h (ie: test_progs.h).

Make sure that test_progs build success does not depend on header ordering by adding the missing header include in network_helpers.h

Fixes: f6642de0c3e9 ("selftests/bpf: Add csum helpers") Signed-off-by: Alexis Lothoré (eBPF Foundation) alexis.lothore@bootlin.com --- tools/testing/selftests/bpf/network_helpers.h | 1 + 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h index c72c16e1aff825439896b38e59962ffafe92dc71..5764155b6d25188ed38e828e1e4a8a08f8a83934 100644 --- a/tools/testing/selftests/bpf/network_helpers.h +++ b/tools/testing/selftests/bpf/network_helpers.h @@ -1,6 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __NETWORK_HELPERS_H #define __NETWORK_HELPERS_H +#include <arpa/inet.h> #include <sys/socket.h> #include <sys/types.h> #include <linux/types.h>

--- base-commit: 67a7c7b656cfc10a7280f71641fb9e88726e8a5d change-id: 20241008-network_helpers_fix-bbb7d1589930

Best regards,