[PATCH 5.16 0291/1039] net: dsa: hellcreek: Allow PTP P2P measurements on blocked ports

From: Greg Kroah-Hartman
Date: Mon Jan 24 2022 - 16:48:08 EST


From: Kurt Kanzenbach <kurt@xxxxxxxxxxxxx>

[ Upstream commit cad1798d2d0811ded37d1e946c6796102e58013b ]

Allow PTP peer delay measurements on blocked ports by STP. In case of topology
changes the PTP stack can directly start with the correct delays.

Fixes: ddd56dfe52c9 ("net: dsa: hellcreek: Add PTP clock support")
Signed-off-by: Kurt Kanzenbach <kurt@xxxxxxxxxxxxx>
Reviewed-by: Vladimir Oltean <olteanv@xxxxxxxxx>
Acked-by: Richard Cochran <richardcochran@xxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/dsa/hirschmann/hellcreek.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dsa/hirschmann/hellcreek.c b/drivers/net/dsa/hirschmann/hellcreek.c
index b488990b5b06e..40ce8c0c9167a 100644
--- a/drivers/net/dsa/hirschmann/hellcreek.c
+++ b/drivers/net/dsa/hirschmann/hellcreek.c
@@ -1069,7 +1069,7 @@ static int hellcreek_setup_fdb(struct hellcreek *hellcreek)
.portmask = 0x03, /* Management ports */
.age = 0,
.is_obt = 0,
- .pass_blocked = 0,
+ .pass_blocked = 1,
.is_static = 1,
.reprio_tc = 6, /* TC: 6 as per IEEE 802.1AS */
.reprio_en = 1,
--
2.34.1