[PATCH] selftests/bpf: Fix sockopt selftest failure on powerpc

Saket Kumar Bhaskar
2025-03-11T08:47:28Z

The SO_RCVLOWAT option is defined as 18 in the selftest header,
which matches the generic definition. However, on powerpc,
SO_RCVLOWAT is defined as 16. This discrepancy causes
sol_socket_sockopt() to fail with the default switch case on powerpc.

This commit fixes by defining SO_RCVLOWAT as 16 for powerpc.

Signed-off-by: Saket Kumar Bhaskar <skb99@linux.ibm.com>
---
tools/testing/selftests/bpf/progs/bpf_tracing_net.h | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/bpf/progs/bpf_tracing_net.h b/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
index 59843b430f76..bcd44d5018bf 100644
--- a/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
+++ b/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
@@ -15,7 +15,11 @@
#define SO_KEEPALIVE 9
#define SO_PRIORITY 12
#define SO_REUSEPORT 15
+#if defined(__TARGET_ARCH_powerpc)
+#define SO_RCVLOWAT 16
+#else
#define SO_RCVLOWAT 18
+#endif
#define SO_BINDTODEVICE 25
#define SO_MARK 36
#define SO_MAX_PACING_RATE 47
--
2.43.5