Squash to "selftests/bpf: Add bpf_burst scheduler & test"

After squashing into this change, the patch "selftests/bpf: Add bpf_burst
test" can be merged into the patch "selftests/bpf: Add bpf_burst scheduler"
appending the following lines into commit log:

'''
Using MPTCP_SCHED_TEST macro to add a new test for this bpf_burst
scheduler, the arguments "1 1" means data has been sent on both net
devices. Run this test by RUN_MPTCP_TEST macro.
'''

And update the subject to "selftests/bpf: Add bpf_burst scheduler & test".

Drop send_data, using send_recv_data instead.

Signed-off-by: Geliang Tang <[email protected]>

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

@@ -542,41 +542,7 @@ MPTCP_SCHED_TEST(first, WITH_DATA, WITHOUT_DATA);
 MPTCP_SCHED_TEST(bkup, WITH_DATA, WITHOUT_DATA);
 MPTCP_SCHED_TEST(rr, WITH_DATA, WITH_DATA);
 MPTCP_SCHED_TEST(red, WITH_DATA, WITH_DATA);
-
-static void test_burst(void)
-{
-	struct mptcp_bpf_burst *burst_skel;
-	int server_fd, client_fd;
-	struct nstoken *nstoken;
-	struct bpf_link *link;
-
-	burst_skel = mptcp_bpf_burst__open_and_load();
-	if (!ASSERT_OK_PTR(burst_skel, "bpf_burst__open_and_load"))
-		return;
-
-	link = bpf_map__attach_struct_ops(burst_skel->maps.burst);
-	if (!ASSERT_OK_PTR(link, "bpf_map__attach_struct_ops")) {
-		mptcp_bpf_burst__destroy(burst_skel);
-		return;
-	}
-
-	nstoken = sched_init("subflow", "bpf_burst");
-	if (!ASSERT_OK_PTR(nstoken, "sched_init:bpf_burst"))
-		goto fail;
-	server_fd = start_mptcp_server(AF_INET, ADDR_1, PORT_1, 0);
-	client_fd = connect_to_fd(server_fd, 0);
-
-	send_data(server_fd, client_fd, "bpf_burst");
-	ASSERT_OK(has_bytes_sent(ADDR_1), "has_bytes_sent addr 1");
-	ASSERT_OK(has_bytes_sent(ADDR_2), "has_bytes_sent addr 2");
-
-	close(client_fd);
-	close(server_fd);
-fail:
-	cleanup_netns(nstoken);
-	bpf_link__destroy(link);
-	mptcp_bpf_burst__destroy(burst_skel);
-}
+MPTCP_SCHED_TEST(burst, WITH_DATA, WITH_DATA);
 
 #define RUN_MPTCP_TEST(suffix)					\
 do {								\
@@ -593,6 +559,5 @@ void test_mptcp(void)
 	RUN_MPTCP_TEST(bkup);
 	RUN_MPTCP_TEST(rr);
 	RUN_MPTCP_TEST(red);
-	if (test__start_subtest("burst"))
-		test_burst();
+	RUN_MPTCP_TEST(burst);
 }