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selftests/bpf: Add a selftest for the tracing bpf_get_socket_cookie

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This builds up on the existing socket cookie test which checks whether
the bpf_get_socket_cookie helpers provide the same value in
cgroup/connect6 and sockops programs for a socket created by the
userspace part of the test.

Instead of having an update_cookie sockops program tag a socket local
storage with 0xFF, this uses both an update_cookie_sockops program and
an update_cookie_tracing program which succesively tag the socket with
0x0F and then 0xF0.

Signed-off-by: Florent Revest <revest@chromium.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: KP Singh <kpsingh@kernel.org>
Link: https://lore.kernel.org/bpf/20210210111406.785541-5-revest@chromium.org
This commit is contained in:
Florent Revest
2021-02-10 12:14:06 +01:00
committed by Alexei Starovoitov
parent 6cd4dcc3fb
commit 6fdd671baa
2 changed files with 41 additions and 6 deletions
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11
tools/testing/selftests/bpf/prog_tests/socket_cookie.c
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@ -35,9 +35,14 @@ void test_socket_cookie(void)
if (!ASSERT_OK_PTR(skel->links.set_cookie, "prog_attach"))
goto close_cgroup_fd;
skel->links.update_cookie = bpf_program__attach_cgroup(
skel->progs.update_cookie, cgroup_fd);
if (!ASSERT_OK_PTR(skel->links.update_cookie, "prog_attach"))
skel->links.update_cookie_sockops = bpf_program__attach_cgroup(
skel->progs.update_cookie_sockops, cgroup_fd);
if (!ASSERT_OK_PTR(skel->links.update_cookie_sockops, "prog_attach"))
goto close_cgroup_fd;
skel->links.update_cookie_tracing = bpf_program__attach(
skel->progs.update_cookie_tracing);
if (!ASSERT_OK_PTR(skel->links.update_cookie_tracing, "prog_attach"))
goto close_cgroup_fd;
server_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);