Received-SPF: pass (google.com: domain of linux-kernel+bounces-210018-linux.lists.archive=gmail.com@vger.kernel.org designates 139.178.88.99 as permitted sender) client-ip=139.178.88.99;
From: Martin Schiller <ms@dev.tdt.de>
To: martin.blumenstingl@googlemail.com,
	hauke@hauke-m.de,
	andrew@lunn.ch,
	f.fainelli@gmail.com,
	olteanv@gmail.com,
	davem@davemloft.net,
	edumazet@google.com,
	kuba@kernel.org,
	pabeni@redhat.com,
	robh@kernel.org,
	krzk+dt@kernel.org,
	conor+dt@kernel.org
Cc: netdev@vger.kernel.org,
	devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	ms@dev.tdt.de
Subject: [PATCH net-next v5 09/12] net: dsa: lantiq_gswip: Consistently use macros for the mac bridge table
Date: Tue, 11 Jun 2024 15:54:31 +0200
Message-ID: <20240611135434.3180973-10-ms@dev.tdt.de>
In-Reply-To: <20240611135434.3180973-1-ms@dev.tdt.de>
References: <20240611135434.3180973-1-ms@dev.tdt.de>
Precedence: bulk
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable

From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>

Only bits [5:0] in mac_bridge.key[3] are reserved for the FID.
Also, for dynamic (learned) entries, bits [7:4] in mac_bridge.val[0]
represents the port.

Introduce new macros GSWIP_TABLE_MAC_BRIDGE_KEY3_FID and
GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT macro and use it throughout the driver.
Also rename and update GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC to use the
BIT() macro. This makes the driver code easier to understand.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 drivers/net/dsa/lantiq_gswip.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/net/dsa/lantiq_gswip.c b/drivers/net/dsa/lantiq_gswi=
p.c
index 525a62a21601..cd88b00cfdc1 100644
--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -236,7 +236,9 @@
 #define GSWIP_TABLE_ACTIVE_VLAN		0x01
 #define GSWIP_TABLE_VLAN_MAPPING	0x02
 #define GSWIP_TABLE_MAC_BRIDGE		0x0b
-#define  GSWIP_TABLE_MAC_BRIDGE_STATIC	0x01	/* Static not, aging entry *=
/
+#define  GSWIP_TABLE_MAC_BRIDGE_KEY3_FID	GENMASK(5, 0)	/* Filtering iden=
tifier */
+#define  GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT	GENMASK(7, 4)	/* Port on learn=
ed entries */
+#define  GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC	BIT(0)		/* Static, non-aging=
 entry */
=20
 #define XRX200_GPHY_FW_ALIGN	(16 * 1024)
=20
@@ -1304,10 +1306,11 @@ static void gswip_port_fast_age(struct dsa_switch=
 *ds, int port)
 		if (!mac_bridge.valid)
 			continue;
=20
-		if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_STATIC)
+		if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC)
 			continue;
=20
-		if (((mac_bridge.val[0] & GENMASK(7, 4)) >> 4) !=3D port)
+		if (port !=3D FIELD_GET(GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT,
+				      mac_bridge.val[0]))
 			continue;
=20
 		mac_bridge.valid =3D false;
@@ -1382,9 +1385,9 @@ static int gswip_port_fdb(struct dsa_switch *ds, in=
t port,
 	mac_bridge.key[0] =3D addr[5] | (addr[4] << 8);
 	mac_bridge.key[1] =3D addr[3] | (addr[2] << 8);
 	mac_bridge.key[2] =3D addr[1] | (addr[0] << 8);
-	mac_bridge.key[3] =3D fid;
+	mac_bridge.key[3] =3D FIELD_PREP(GSWIP_TABLE_MAC_BRIDGE_KEY3_FID, fid);
 	mac_bridge.val[0] =3D add ? BIT(port) : 0; /* port map */
-	mac_bridge.val[1] =3D GSWIP_TABLE_MAC_BRIDGE_STATIC;
+	mac_bridge.val[1] =3D GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC;
 	mac_bridge.valid =3D add;
=20
 	err =3D gswip_pce_table_entry_write(priv, &mac_bridge);
@@ -1438,14 +1441,15 @@ static int gswip_port_fdb_dump(struct dsa_switch =
*ds, int port,
 		addr[2] =3D (mac_bridge.key[1] >> 8) & 0xff;
 		addr[1] =3D mac_bridge.key[2] & 0xff;
 		addr[0] =3D (mac_bridge.key[2] >> 8) & 0xff;
-		if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_STATIC) {
+		if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_VAL1_STATIC) {
 			if (mac_bridge.val[0] & BIT(port)) {
 				err =3D cb(addr, 0, true, data);
 				if (err)
 					return err;
 			}
 		} else {
-			if (((mac_bridge.val[0] & GENMASK(7, 4)) >> 4) =3D=3D port) {
+			if (port =3D=3D FIELD_GET(GSWIP_TABLE_MAC_BRIDGE_VAL0_PORT,
+					      mac_bridge.val[0])) {
 				err =3D cb(addr, 0, false, data);
 				if (err)
 					return err;
--=20
2.39.2