SOCK_NONBLOCK flag is only effective during socket creation, not during
recv. Use MSG_DONTWAIT instead.

Signed-off-by: Jiayuan Chen <mrpre@163.com>
---
 tools/testing/selftests/bpf/prog_tests/sockmap_basic.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
index 884ad87783d5..0c51b7288978 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockmap_basic.c
@@ -522,8 +522,8 @@ static void test_sockmap_skb_verdict_shutdown(void)
 	if (!ASSERT_EQ(err, 1, "epoll_wait(fd)"))
 		goto out_close;
 
-	n = recv(c1, &b, 1, SOCK_NONBLOCK);
-	ASSERT_EQ(n, 0, "recv_timeout(fin)");
+	n = recv(c1, &b, 1, MSG_DONTWAIT);
+	ASSERT_EQ(n, 0, "recv(fin)");
 out_close:
 	close(c1);
 	close(p1);
@@ -628,7 +628,7 @@ static void test_sockmap_skb_verdict_fionread(bool pass_prog)
 	ASSERT_EQ(avail, expected, "ioctl(FIONREAD)");
 	/* On DROP test there will be no data to read */
 	if (pass_prog) {
-		recvd = recv_timeout(c1, &buf, sizeof(buf), SOCK_NONBLOCK, IO_TIMEOUT_SEC);
+		recvd = recv_timeout(c1, &buf, sizeof(buf), MSG_DONTWAIT, IO_TIMEOUT_SEC);
 		ASSERT_EQ(recvd, sizeof(buf), "recv_timeout(c0)");
 	}
 
-- 
2.43.5

On Wed, Jan 22, 2025 at 06:09 PM +08, Jiayuan Chen wrote:
> SOCK_NONBLOCK flag is only effective during socket creation, not during
> recv. Use MSG_DONTWAIT instead.
>
> Signed-off-by: Jiayuan Chen <mrpre@163.com>
> ---

Acked-by: Jakub Sitnicki <jakub@cloudflare.com>