[PATCH] selftests/netfilter: formally SKIP() two cases of setup failure

[John Hubbard]

If mnl_socket_open() or mnl_socket_bind() fails, it's generally due to
not having the user space parts fully installed and configured
correctly. This was previously ignored and reported as a test PASS, but
what really happened is that the tests were being skipped. This led to
generating inaccurate TAP output (I've omitted the leading '#'
character):

   Totals: pass:3 fail:0 xfail:0 xpass:0 skip:0 error:0

Fix this by using kselftest's SKIP() macro. The new output on the same
misconfigured system shows:

    Totals: pass:0 fail:0 xfail:0 xpass:0 skip:3 error:0

This was briefly discussed already with Felix Huettner [1].

[1] https://lore.kernel.org/all/edca87be-d8a7-4c62-b9c1-f9b3f5752...@nvidia.com/

Cc: Felix Huettner <felix.huettner@mail.schwarz>
Signed-off-by: John Hubbard <jhubb...@nvidia.com>
---
 tools/testing/selftests/netfilter/conntrack_dump_flush.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/netfilter/conntrack_dump_flush.c 
b/tools/testing/selftests/netfilter/conntrack_dump_flush.c
index e9df4ae14e16..4a73afad4de4 100644
--- a/tools/testing/selftests/netfilter/conntrack_dump_flush.c
+++ b/tools/testing/selftests/netfilter/conntrack_dump_flush.c
@@ -317,12 +317,12 @@ FIXTURE_SETUP(conntrack_dump_flush)
        self->sock = mnl_socket_open(NETLINK_NETFILTER);
        if (!self->sock) {
                perror("mnl_socket_open");
-               exit(EXIT_FAILURE);
+               SKIP(exit(EXIT_FAILURE), "mnl_socket_open() failed");
        }
 
        if (mnl_socket_bind(self->sock, 0, MNL_SOCKET_AUTOPID) < 0) {
                perror("mnl_socket_bind");
-               exit(EXIT_FAILURE);
+               SKIP(exit(EXIT_FAILURE), "mnl_socket_bind() failed");
        }
 
        ret = conntracK_count_zone(self->sock, TEST_ZONE_ID);

base-commit: 45db3ab70092637967967bfd8e6144017638563c
prerequisite-patch-id: b901ece2a5b78503e2fb5480f20e304d36a0ea27
prerequisite-patch-id: 9db2d20be98dc44731d8605a3da64ff118d2546d
prerequisite-patch-id: 72413b9b47d66666f20967a664470199892fe282
-- 
2.45.0