Parameters were created using wrong C types, which caused them to be of wrong size on some architectures, causing problems. The problem with SO_RCVLOWAT was found on s390 (big endian), while x86-64 didn't show it. After the fix, all tests pass on s390. Then Stefano Garzarella pointed out that SO_VM_SOCKETS_* calls might have a similar problem, which turned out to be true, hence, the second patch. Changes for v5: - in the patch #2 replace the introduced uint64_t with unsigned long long to match documentation - add a patch #3 that verifies every setsockopt() call. Changes for v4: - add "Reviewed-by:" to the first patch, and add a second patch fixing SO_VM_SOCKETS_* calls, which depends on the first one (hence, it's now a patch series.) Changes for v3: - fix the same problem in vsock_perf and update commit message Changes for v2: - add "Fixes:" lines to the commit message Konstantin Shkolnyy (3): vsock/test: fix failures due to wrong SO_RCVLOWAT parameter vsock/test: fix parameter types in SO_VM_SOCKETS_* calls vsock/test: verify socket options after setting them tools/testing/vsock/Makefile | 8 +- tools/testing/vsock/control.c | 8 +- tools/testing/vsock/msg_zerocopy_common.c | 8 +- tools/testing/vsock/util_socket.c | 149 ++++++++++++++++++++++ tools/testing/vsock/util_socket.h | 19 +++ tools/testing/vsock/vsock_perf.c | 34 ++--- tools/testing/vsock/vsock_test.c | 64 +++++----- 7 files changed, 231 insertions(+), 59 deletions(-) create mode 100644 tools/testing/vsock/util_socket.c create mode 100644 tools/testing/vsock/util_socket.h -- 2.34.1