Commit 9c2a2a45 authored by Michal Luczaj's avatar Michal Luczaj Committed by Alexei Starovoitov
Browse files

selftest/bpf: Add test for af_vsock poll() 



Verify that vsock's poll() notices when sk_psock::ingress_msg isn't empty.

Signed-off-by: default avatarMichal Luczaj <mhal@rbox.co>
Acked-by: default avatarStefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20241118-vsock-bpf-poll-close-v1-2-f1b9669cacdc@rbox.co


Signed-off-by: default avatarAlexei Starovoitov <ast@kernel.org>
Acked-by: default avatarJohn Fastabend <john.fastabend@gmail.com>
parent 9f0fc981

tools/testing/selftests/bpf/prog_tests/sockmap_basic.c

+46 −0
Original line number Diff line number Diff line
@@ -937,6 +937,50 @@ static void test_sockmap_same_sock(void) 
	test_sockmap_pass_prog__destroy(skel);

}



static void test_sockmap_skb_verdict_vsock_poll(void)

{

	struct test_sockmap_pass_prog *skel;

	int err, map, conn, peer;

	struct bpf_program *prog;

	struct bpf_link *link;

	char buf = 'x';

	int zero = 0;



	skel = test_sockmap_pass_prog__open_and_load();

	if (!ASSERT_OK_PTR(skel, "open_and_load"))

		return;



	if (create_pair(AF_VSOCK, SOCK_STREAM, &conn, &peer))

		goto destroy;



	prog = skel->progs.prog_skb_verdict;

	map = bpf_map__fd(skel->maps.sock_map_rx);

	link = bpf_program__attach_sockmap(prog, map);

	if (!ASSERT_OK_PTR(link, "bpf_program__attach_sockmap"))

		goto close;



	err = bpf_map_update_elem(map, &zero, &conn, BPF_ANY);

	if (!ASSERT_OK(err, "bpf_map_update_elem"))

		goto detach;



	if (xsend(peer, &buf, 1, 0) != 1)

		goto detach;



	err = poll_read(conn, IO_TIMEOUT_SEC);

	if (!ASSERT_OK(err, "poll"))

		goto detach;



	if (xrecv_nonblock(conn, &buf, 1, 0) != 1)

		FAIL("xrecv_nonblock");

detach:

	bpf_link__detach(link);

close:

	xclose(conn);

	xclose(peer);

destroy:

	test_sockmap_pass_prog__destroy(skel);

}



void test_sockmap_basic(void)

{

	if (test__start_subtest("sockmap create_update_free"))
@@ -997,4 +1041,6 @@ void test_sockmap_basic(void) 
		test_skmsg_helpers_with_link(BPF_MAP_TYPE_SOCKMAP);

	if (test__start_subtest("sockhash sk_msg attach sockhash helpers with link"))

		test_skmsg_helpers_with_link(BPF_MAP_TYPE_SOCKHASH);

	if (test__start_subtest("sockmap skb_verdict vsock poll"))

		test_sockmap_skb_verdict_vsock_poll();

}