diff options
Diffstat (limited to 'tools/testing')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c index df27535995af..ad56e4370ce3 100644 --- a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c +++ b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c @@ -18,7 +18,7 @@ static void test_xdp_with_cpumap_helpers(void) struct bpf_cpumap_val val = { .qsize = 192, }; - int err, prog_fd, prog_redir_fd, map_fd; + int err, prog_fd, prog_redir_fd, map_fd, bad_fd; struct nstoken *nstoken = NULL; __u32 idx = 0; @@ -79,7 +79,22 @@ static void test_xdp_with_cpumap_helpers(void) val.qsize = 192; val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_prog); err = bpf_map_update_elem(map_fd, &idx, &val, 0); - ASSERT_NEQ(err, 0, "Add non-BPF_XDP_CPUMAP program to cpumap entry"); + ASSERT_EQ(err, -EINVAL, "Add non-BPF_XDP_CPUMAP program to cpumap entry"); + + /* Try to attach non-BPF file descriptor */ + bad_fd = open("/dev/null", O_RDONLY); + ASSERT_GE(bad_fd, 0, "Open /dev/null for non-BPF fd"); + + val.bpf_prog.fd = bad_fd; + err = bpf_map_update_elem(map_fd, &idx, &val, 0); + ASSERT_EQ(err, -EINVAL, "Add non-BPF fd to cpumap entry"); + + /* Try to attach nonexistent file descriptor */ + err = close(bad_fd); + ASSERT_EQ(err, 0, "Close non-BPF fd for nonexistent fd"); + + err = bpf_map_update_elem(map_fd, &idx, &val, 0); + ASSERT_EQ(err, -EBADF, "Add nonexistent fd to cpumap entry"); /* Try to attach BPF_XDP program with frags to cpumap when we have * already loaded a BPF_XDP program on the map |