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Subject[PATCH net-next] net: mvpp2: Add missing VLAN tag detection
Marvell PPv2 Header Parser sets some bits in the 'result_info' field in
each lookup iteration, to identify different packet attributes such as
DSA / VLAN tag, protocol infos, etc. This is used in further
classification stages in the controller.

It's the DSA tag detection entry that is in charge of detecting when there
is a single VLAN tag.

This commits adds the missing update of the result_info in this case.

Signed-off-by: Maxime Chevallier <>
drivers/net/ethernet/marvell/mvpp2.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/marvell/mvpp2.c b/drivers/net/ethernet/marvell/mvpp2.c
index 7ba7e5938c2e..47e582406bd3 100644
--- a/drivers/net/ethernet/marvell/mvpp2.c
+++ b/drivers/net/ethernet/marvell/mvpp2.c
@@ -2130,6 +2130,9 @@ static void mvpp2_prs_dsa_tag_set(struct mvpp2 *priv, int port, bool add,
mvpp2_prs_sram_ai_update(&pe, 0,

+ /* Set result info bits to 'single vlan' */
+ mvpp2_prs_sram_ri_update(&pe, MVPP2_PRS_RI_VLAN_SINGLE,
/* If packet is tagged continue check vid filtering */
mvpp2_prs_sram_next_lu_set(&pe, MVPP2_PRS_LU_VID);
} else {
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