netdev - [PATCH net-next 3/8] net: dsa: b53: move writing ARL entries into their own functions

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Message-ID: <20251107080749.26936-4-jonas.gorski@gmail.com>
Date: Fri,  7 Nov 2025 09:07:44 +0100
From: Jonas Gorski <jonas.gorski@...il.com>
To: Florian Fainelli <florian.fainelli@...adcom.com>,
	Andrew Lunn <andrew@...n.ch>,
	Vladimir Oltean <olteanv@...il.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>
Cc: netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH net-next 3/8] net: dsa: b53: move writing ARL entries into their own functions

Move writing ARL entries into individual functions for each format.

Signed-off-by: Jonas Gorski <jonas.gorski@...il.com>
---
 drivers/net/dsa/b53/b53_common.c | 38 ++++++++++++++++++++++----------
 1 file changed, 26 insertions(+), 12 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index d99e15a7a6bb..9eb7ca878e30 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1860,6 +1860,16 @@ static void b53_arl_read_entry_25(struct b53_device *dev,
 	b53_arl_to_entry_25(ent, mac_vid);
 }
 
+static void b53_arl_write_entry_25(struct b53_device *dev,
+				   const struct b53_arl_entry *ent, u8 idx)
+{
+	u64 mac_vid;
+
+	b53_arl_from_entry_25(&mac_vid, ent);
+	b53_write64(dev, B53_ARLIO_PAGE, B53_ARLTBL_MAC_VID_ENTRY(idx),
+		    mac_vid);
+}
+
 static void b53_arl_read_entry_95(struct b53_device *dev,
 				  struct b53_arl_entry *ent, u8 idx)
 {
@@ -1872,6 +1882,19 @@ static void b53_arl_read_entry_95(struct b53_device *dev,
 	b53_arl_to_entry(ent, mac_vid, fwd_entry);
 }
 
+static void b53_arl_write_entry_95(struct b53_device *dev,
+				   const struct b53_arl_entry *ent, u8 idx)
+{
+	u32 fwd_entry;
+	u64 mac_vid;
+
+	b53_arl_from_entry(&mac_vid, &fwd_entry, ent);
+	b53_write64(dev, B53_ARLIO_PAGE, B53_ARLTBL_MAC_VID_ENTRY(idx),
+		    mac_vid);
+	b53_write32(dev, B53_ARLIO_PAGE, B53_ARLTBL_DATA_ENTRY(idx),
+		    fwd_entry);
+}
+
 static int b53_arl_read(struct b53_device *dev, const u8 *mac,
 			u16 vid, struct b53_arl_entry *ent, u8 *idx)
 {
@@ -1912,9 +1935,8 @@ static int b53_arl_op(struct b53_device *dev, int op, int port,
 		      const unsigned char *addr, u16 vid, bool is_valid)
 {
 	struct b53_arl_entry ent;
-	u32 fwd_entry;
-	u64 mac, mac_vid = 0;
 	u8 idx = 0;
+	u64 mac;
 	int ret;
 
 	/* Convert the array into a 64-bit MAC */
@@ -1947,7 +1969,6 @@ static int b53_arl_op(struct b53_device *dev, int op, int port,
 		/* We could not find a matching MAC, so reset to a new entry */
 		dev_dbg(dev->dev, "{%pM,%.4d} not found, using idx: %d\n",
 			addr, vid, idx);
-		fwd_entry = 0;
 		break;
 	default:
 		dev_dbg(dev->dev, "{%pM,%.4d} found, using idx: %d\n",
@@ -1975,16 +1996,9 @@ static int b53_arl_op(struct b53_device *dev, int op, int port,
 	ent.is_age = false;
 	memcpy(ent.mac, addr, ETH_ALEN);
 	if (is5325(dev) || is5365(dev))
-		b53_arl_from_entry_25(&mac_vid, &ent);
+		b53_arl_write_entry_25(dev, &ent, idx);
 	else
-		b53_arl_from_entry(&mac_vid, &fwd_entry, &ent);
-
-	b53_write64(dev, B53_ARLIO_PAGE,
-		    B53_ARLTBL_MAC_VID_ENTRY(idx), mac_vid);
-
-	if (!is5325(dev) && !is5365(dev))
-		b53_write32(dev, B53_ARLIO_PAGE,
-			    B53_ARLTBL_DATA_ENTRY(idx), fwd_entry);
+		b53_arl_write_entry_95(dev, &ent, idx);
 
 	return b53_arl_rw_op(dev, 0);
 }
-- 
2.43.0