selftests/bpf: add two skmsg verdict tests for BPF_F_PERMANENT flag

Add two tests for BPF_F_PERMANENT flag in sockmap_basic.c.

Signed-off-by: Liu Jian <[email protected]>

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

@@ -525,7 +525,7 @@ static void test_sockmap_skb_verdict_peek(void)
 	test_sockmap_pass_prog__destroy(pass);
 }
 
-static void test_sockmap_msg_verdict(bool is_ingress)
+static void test_sockmap_msg_verdict(bool is_ingress, bool is_permanent)
 {
 	int key, sent, recvd, recv_fd;
 	int err, map, verdict, s, c0, c1, p0, p1;
@@ -577,11 +577,18 @@ static void test_sockmap_msg_verdict(bool is_ingress)
 		skel->bss->skmsg_redir_key = 2;
 	}
 
+	if (is_permanent)
+		skel->bss->skmsg_redir_flags |= BPF_F_PERMANENT;
+
 	sent = xsend(p1, &buf, sizeof(buf), 0);
 	ASSERT_EQ(sent, sizeof(buf), "xsend(p1)");
 	recvd = recv_timeout(recv_fd, &buf, sizeof(buf), SOCK_NONBLOCK, IO_TIMEOUT_SEC);
 	ASSERT_EQ(recvd, sizeof(buf), "recv_timeout(recv_fd)");
 
+	sent = xsend(p1, &buf, sizeof(buf), 0);
+	ASSERT_EQ(sent, sizeof(buf), "xsend(p1)");
+	recvd = recv_timeout(recv_fd, &buf, sizeof(buf), SOCK_NONBLOCK, IO_TIMEOUT_SEC);
+	ASSERT_EQ(recvd, sizeof(buf), "recv_timeout(recv_fd)");
 out_close:
 	close(c0);
 	close(p0);
@@ -634,7 +641,11 @@ void test_sockmap_basic(void)
 	if (test__start_subtest("sockmap skb_verdict msg_f_peek"))
 		test_sockmap_skb_verdict_peek();
 	if (test__start_subtest("sockmap msg_verdict"))
-		test_sockmap_msg_verdict(false);
+		test_sockmap_msg_verdict(false, false);
 	if (test__start_subtest("sockmap msg_verdict ingress"))
-		test_sockmap_msg_verdict(true);
+		test_sockmap_msg_verdict(true, false);
+	if (test__start_subtest("sockmap msg_verdict permanent"))
+		test_sockmap_msg_verdict(false, true);
+	if (test__start_subtest("sockmap msg_verdict ingress permanent"))
+		test_sockmap_msg_verdict(true, true);
 }