[PATCH net-next 2/3] net-timestamp: add OPT_ID_TCP test in selftests

[Jason Xing <kerneljasonxing@gmail.com>]

From: Jason Xing <kernelxing@tencent.com>

Introduce a test for SOF_TIMESTAMPING_OPT_ID_TCP for TCP proto so
that we can get aware of whether using write_seq as an initial key
value works as expected.

Signed-off-by: Jason Xing <kernelxing@tencent.com>
---
 tools/testing/selftests/net/txtimestamp.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/tools/testing/selftests/net/txtimestamp.c b/tools/testing/selftests/net/txtimestamp.c
index d626f22f9550..5f5de79d0e51 100644
--- a/tools/testing/selftests/net/txtimestamp.c
+++ b/tools/testing/selftests/net/txtimestamp.c
@@ -893,6 +893,12 @@ static void do_main(int family)
 		do_test(family, SOF_TIMESTAMPING_TX_SCHED |
 				SOF_TIMESTAMPING_TX_SOFTWARE |
 				SOF_TIMESTAMPING_TX_ACK);
+
+		fprintf(stderr, "\ntest ENQ + SND + ACK with tcp tskey setting\n");
+		do_test(family, SOF_TIMESTAMPING_TX_SCHED |
+				SOF_TIMESTAMPING_TX_SOFTWARE |
+				SOF_TIMESTAMPING_TX_ACK |
+				SOF_TIMESTAMPING_OPT_ID_TCP);
 	}
 }
 
-- 
2.37.3