netdev - [PATCH net-next 08/15] net: dsa: tag_ocelot: use the dsa_xmit_port

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Message-ID: <20251127120902.292555-9-vladimir.oltean@nxp.com>
Date: Thu, 27 Nov 2025 14:08:55 +0200
From: Vladimir Oltean <vladimir.oltean@....com>
To: netdev@...r.kernel.org
Cc: Andrew Lunn <andrew@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH net-next 08/15] net: dsa: tag_ocelot: use the dsa_xmit_port_mask() helper

The "ocelot" and "seville" tagging protocols populate a bit mask for the
TX ports, so we can use dsa_xmit_port_mask() to centralize the decision
of how to set that field.

This protocol used BIT_ULL() rather than simple BIT() to silence Smatch,
as explained in commit 1f778d500df3 ("net: mscc: ocelot: avoid type
promotion when calling ocelot_ifh_set_dest"). I would expect that this
tool no longer complains now, when the BIT(dp->index) is hidden inside
the dsa_xmit_port_mask() function, the return value of which is promoted
to u64.

Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
---
 net/dsa/tag_ocelot.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/net/dsa/tag_ocelot.c b/net/dsa/tag_ocelot.c
index bf6608fc6be7..3405def79c2d 100644
--- a/net/dsa/tag_ocelot.c
+++ b/net/dsa/tag_ocelot.c
@@ -46,11 +46,10 @@ static void ocelot_xmit_common(struct sk_buff *skb, struct net_device *netdev,
 static struct sk_buff *ocelot_xmit(struct sk_buff *skb,
 				   struct net_device *netdev)
 {
-	struct dsa_port *dp = dsa_user_to_port(netdev);
 	void *injection;
 
 	ocelot_xmit_common(skb, netdev, cpu_to_be32(0x8880000a), &injection);
-	ocelot_ifh_set_dest(injection, BIT_ULL(dp->index));
+	ocelot_ifh_set_dest(injection, dsa_xmit_port_mask(skb, netdev));
 
 	return skb;
 }
@@ -58,11 +57,10 @@ static struct sk_buff *ocelot_xmit(struct sk_buff *skb,
 static struct sk_buff *seville_xmit(struct sk_buff *skb,
 				    struct net_device *netdev)
 {
-	struct dsa_port *dp = dsa_user_to_port(netdev);
 	void *injection;
 
 	ocelot_xmit_common(skb, netdev, cpu_to_be32(0x88800005), &injection);
-	seville_ifh_set_dest(injection, BIT_ULL(dp->index));
+	seville_ifh_set_dest(injection, dsa_xmit_port_mask(skb, netdev));
 
 	return skb;
 }
-- 
2.43.0