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

Use endpoint_init in sched_init and use _ss_search in has_bytes_sent.

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

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

@@ -536,28 +536,22 @@ static struct nstoken *sched_init(char *flags, char *sched)
 
 	nstoken = create_netns();
 	if (!ASSERT_OK_PTR(nstoken, "create_netns"))
+		return NULL;
+
+	if (!ASSERT_OK(endpoint_init("subflow"), "endpoint_init"))
 		goto fail;
 
-	SYS(fail, "ip -net %s link add veth1 type veth peer name veth2", NS_TEST);
-	SYS(fail, "ip -net %s addr add %s/24 dev veth1", NS_TEST, ADDR_1);
-	SYS(fail, "ip -net %s link set dev veth1 up", NS_TEST);
-	SYS(fail, "ip -net %s addr add %s/24 dev veth2", NS_TEST, ADDR_2);
-	SYS(fail, "ip -net %s link set dev veth2 up", NS_TEST);
-	SYS(fail, "ip -net %s mptcp endpoint add %s %s", NS_TEST, ADDR_2, flags);
 	SYS(fail, "ip netns exec %s sysctl -qw net.mptcp.scheduler=%s", NS_TEST, sched);
 
 	return nstoken;
 fail:
+	cleanup_netns(nstoken);
 	return NULL;
 }
 
-static int has_bytes_sent(char *addr)
+static int has_bytes_sent(char *dst)
 {
-	char cmd[128];
-
-	snprintf(cmd, sizeof(cmd), "ip netns exec %s ss -it src %s sport %d dst %s | %s",
-		 NS_TEST, ADDR_1, PORT_1, addr, "grep -q bytes_sent:");
-	return system(cmd);
+	return _ss_search(ADDR_1, dst, "sport", "bytes_sent:");
 }
 
 static void send_data_and_verify(char *sched, bool addr1, bool addr2)