openwrt/target/linux/lantiq/patches-5.15/0738-net-dsa-lantiq_gswip-Consistently-use-macros-for-the.patch

From 61e9b19f6e6174afa7540f0b468a69bc940b91d4 Mon Sep 17 00:00:00 2001
From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Date: Mon, 1 Aug 2022 21:23:49 +0200
Subject: [PATCH 738/768] net: dsa: lantiq_gswip: Consistently use macros for
 the mac bridge table

Introduce a new GSWIP_TABLE_MAC_BRIDGE_PORT macro and use it throughout
the driver. Also update GSWIP_TABLE_MAC_BRIDGE_STATIC to use the BIT()
macro. This makes the driver code easier to understand.

Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 drivers/net/dsa/lantiq_gswip.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -236,7 +236,8 @@
 #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_STATIC	BIT(0)		/* Static not, aging entry */
+#define  GSWIP_TABLE_MAC_BRIDGE_PORT	GENMASK(7, 4)	/* Port on learned entries */
 
 #define XRX200_GPHY_FW_ALIGN	(16 * 1024)
 
@@ -1279,7 +1280,8 @@ static void gswip_port_fast_age(struct d
 		if (mac_bridge.val[1] & GSWIP_TABLE_MAC_BRIDGE_STATIC)
 			continue;
 
-		if (((mac_bridge.val[0] & GENMASK(7, 4)) >> 4) != port)
+		if (port != FIELD_GET(GSWIP_TABLE_MAC_BRIDGE_PORT,
+				      mac_bridge.val[0]))
 			continue;
 
 		mac_bridge.valid = false;
@@ -1414,7 +1416,8 @@ static int gswip_port_fdb_dump(struct ds
 					return err;
 			}
 		} else {
-			if (((mac_bridge.val[0] & GENMASK(7, 4)) >> 4) == port) {
+			if (port == FIELD_GET(GSWIP_TABLE_MAC_BRIDGE_PORT,
+					      mac_bridge.val[0])) {
 				err = cb(addr, 0, false, data);
 				if (err)
 					return err;