netdev - [PATCH net-next 2/6] net: mscc: ocelot: write full VLAN TCI in the injection header

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Date:   Fri,  1 Oct 2021 18:15:27 +0300
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>
Cc:     Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        UNGLinuxDriver@...rochip.com,
        Xiaoliang Yang <xiaoliang.yang_1@....com>,
        Po Liu <po.liu@....com>
Subject: [PATCH net-next 2/6] net: mscc: ocelot: write full VLAN TCI in the injection header

The VLAN TCI contains more than the VLAN ID, it also has the VLAN PCP
and Drop Eligibility Indicator.

If the ocelot driver is going to write the VLAN header inside the DSA
tag, it could just as well write the entire TCI.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 drivers/net/ethernet/mscc/ocelot.c | 2 +-
 include/linux/dsa/ocelot.h         | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
index 559177e6ded4..05c456dbdd72 100644
--- a/drivers/net/ethernet/mscc/ocelot.c
+++ b/drivers/net/ethernet/mscc/ocelot.c
@@ -916,7 +916,7 @@ void ocelot_port_inject_frame(struct ocelot *ocelot, int port, int grp,
 	ocelot_ifh_set_bypass(ifh, 1);
 	ocelot_ifh_set_dest(ifh, BIT_ULL(port));
 	ocelot_ifh_set_tag_type(ifh, IFH_TAG_TYPE_C);
-	ocelot_ifh_set_vid(ifh, skb_vlan_tag_get(skb));
+	ocelot_ifh_set_vlan_tci(ifh, skb_vlan_tag_get(skb));
 	ocelot_ifh_set_rew_op(ifh, rew_op);
 
 	for (i = 0; i < OCELOT_TAG_LEN / 4; i++)
diff --git a/include/linux/dsa/ocelot.h b/include/linux/dsa/ocelot.h
index 435777a0073c..0fe101e8e190 100644
--- a/include/linux/dsa/ocelot.h
+++ b/include/linux/dsa/ocelot.h
@@ -210,9 +210,9 @@ static inline void ocelot_ifh_set_tag_type(void *injection, u64 tag_type)
 	packing(injection, &tag_type, 16, 16, OCELOT_TAG_LEN, PACK, 0);
 }
 
-static inline void ocelot_ifh_set_vid(void *injection, u64 vid)
+static inline void ocelot_ifh_set_vlan_tci(void *injection, u64 vlan_tci)
 {
-	packing(injection, &vid, 11, 0, OCELOT_TAG_LEN, PACK, 0);
+	packing(injection, &vlan_tci, 15, 0, OCELOT_TAG_LEN, PACK, 0);
 }
 
 #endif
-- 
2.25.1