net-timestamp: add selftests for SOF_TIMESTAMPING_OPT_RX_FILTER

Test a few possible cases where we use SOF_TIMESTAMPING_OPT_RX_FILTER
with software or hardware report/generation flag.
Signed-off-by: Jason Xing <kernelxing@tencent.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20240909015612.3856-3-kerneljasonxing@gmail.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>

tools/testing/selftests/net/rxtimestamp.c

@@ -57,6 +57,8 @@ static struct sof_flag sof_flags[] = {
 	SOF_FLAG(SOF_TIMESTAMPING_SOFTWARE),
 	SOF_FLAG(SOF_TIMESTAMPING_RX_SOFTWARE),
 	SOF_FLAG(SOF_TIMESTAMPING_RX_HARDWARE),
+	SOF_FLAG(SOF_TIMESTAMPING_OPT_RX_FILTER),
+	SOF_FLAG(SOF_TIMESTAMPING_RAW_HARDWARE),
 };
 
 static struct socket_type socket_types[] = {
@@ -97,6 +99,22 @@ static struct test_case test_cases[] = {
 			| SOF_TIMESTAMPING_RX_HARDWARE },
 		{}
 	},
+	{
+		{ .so_timestamping = SOF_TIMESTAMPING_RAW_HARDWARE
+			| SOF_TIMESTAMPING_OPT_RX_FILTER },
+		{}
+	},
+	{
+		{ .so_timestamping = SOF_TIMESTAMPING_SOFTWARE
+			| SOF_TIMESTAMPING_OPT_RX_FILTER },
+		{}
+	},
+	{
+		{ .so_timestamping = SOF_TIMESTAMPING_SOFTWARE
+			| SOF_TIMESTAMPING_RX_SOFTWARE
+			| SOF_TIMESTAMPING_OPT_RX_FILTER },
+		{ .swtstamp = true }
+	},
 	{
 		{ .so_timestamping = SOF_TIMESTAMPING_SOFTWARE
 			| SOF_TIMESTAMPING_RX_SOFTWARE },