selftests: bpf: Fix detach from sockmap tests

Fix sockmap tests which rely on old bpf_prog_dispatch behaviour.
In the first case, the tests check that detaching without giving
a program succeeds. Since these are not the desired semantics,
invert the condition. In the second case, the clean up code doesn't
supply the necessary program fds.

Fixes: bb0de3131f4c ("bpf: sockmap: Require attach_bpf_fd when detaching a program")
Reported-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>
Link: https://lore.kernel.org/bpf/20200709115151.75829-1-lmb@cloudflare.com

diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c
index 6a12a0e..754cf61 100644 (file)
--- a/tools/testing/selftests/bpf/test_maps.c
+++ b/tools/testing/selftests/bpf/test_maps.c
@@ -789,19 +789,19 @@ static void test_sockmap(unsigned int tasks, void *data)
        }
 
        err = bpf_prog_detach(fd, BPF_SK_SKB_STREAM_PARSER);
-       if (err) {
+       if (!err) {
                printf("Failed empty parser prog detach\n");
                goto out_sockmap;
        }
 
        err = bpf_prog_detach(fd, BPF_SK_SKB_STREAM_VERDICT);
-       if (err) {
+       if (!err) {
                printf("Failed empty verdict prog detach\n");
                goto out_sockmap;
        }
 
        err = bpf_prog_detach(fd, BPF_SK_MSG_VERDICT);
-       if (err) {
+       if (!err) {
                printf("Failed empty msg verdict prog detach\n");
                goto out_sockmap;
        }
@@ -1090,19 +1090,19 @@ static void test_sockmap(unsigned int tasks, void *data)
                assert(status == 0);
        }
 
-       err = bpf_prog_detach(map_fd_rx, __MAX_BPF_ATTACH_TYPE);
+       err = bpf_prog_detach2(parse_prog, map_fd_rx, __MAX_BPF_ATTACH_TYPE);
        if (!err) {
                printf("Detached an invalid prog type.\n");
                goto out_sockmap;
        }
 
-       err = bpf_prog_detach(map_fd_rx, BPF_SK_SKB_STREAM_PARSER);
+       err = bpf_prog_detach2(parse_prog, map_fd_rx, BPF_SK_SKB_STREAM_PARSER);
        if (err) {
                printf("Failed parser prog detach\n");
                goto out_sockmap;
        }
 
-       err = bpf_prog_detach(map_fd_rx, BPF_SK_SKB_STREAM_VERDICT);
+       err = bpf_prog_detach2(verdict_prog, map_fd_rx, BPF_SK_SKB_STREAM_VERDICT);
        if (err) {
                printf("Failed parser prog detach\n");
                goto out_sockmap;