netdev - [PATCH net-next 06/12] ethernet: renesas: use eth_hw_addr

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Date:   Mon, 18 Oct 2021 07:29:26 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        s.shtylyov@....ru, biju.das.jz@...renesas.com,
        prabhakar.mahadev-lad.rj@...renesas.com
Subject: [PATCH net-next 06/12] ethernet: renesas: use eth_hw_addr_set()

Commit 406f42fa0d3c ("net-next: When a bond have a massive amount
of VLANs...") introduced a rbtree for faster Ethernet address look
up. To maintain netdev->dev_addr in this tree we need to make all
the writes to it got through appropriate helpers.

Break the address up into an array on the stack, then call
eth_hw_addr_set().

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
CC: s.shtylyov@....ru
CC: biju.das.jz@...renesas.com
CC: prabhakar.mahadev-lad.rj@...renesas.com
---
 drivers/net/ethernet/renesas/ravb_main.c | 16 +++++++++-------
 drivers/net/ethernet/renesas/sh_eth.c    | 16 +++++++++-------
 2 files changed, 18 insertions(+), 14 deletions(-)

diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index e5243cc87a19..b4c597f4040c 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -136,13 +136,15 @@ static void ravb_read_mac_address(struct device_node *np,
 	if (ret) {
 		u32 mahr = ravb_read(ndev, MAHR);
 		u32 malr = ravb_read(ndev, MALR);
-
-		ndev->dev_addr[0] = (mahr >> 24) & 0xFF;
-		ndev->dev_addr[1] = (mahr >> 16) & 0xFF;
-		ndev->dev_addr[2] = (mahr >>  8) & 0xFF;
-		ndev->dev_addr[3] = (mahr >>  0) & 0xFF;
-		ndev->dev_addr[4] = (malr >>  8) & 0xFF;
-		ndev->dev_addr[5] = (malr >>  0) & 0xFF;
+		u8 addr[ETH_ALEN];
+
+		addr[0] = (mahr >> 24) & 0xFF;
+		addr[1] = (mahr >> 16) & 0xFF;
+		addr[2] = (mahr >>  8) & 0xFF;
+		addr[3] = (mahr >>  0) & 0xFF;
+		addr[4] = (malr >>  8) & 0xFF;
+		addr[5] = (malr >>  0) & 0xFF;
+		eth_hw_addr_set(ndev, addr);
 	}
 }
 
diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index 0a7d23df45f2..a3fbb2221c9a 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -1157,13 +1157,15 @@ static void read_mac_address(struct net_device *ndev, unsigned char *mac)
 	} else {
 		u32 mahr = sh_eth_read(ndev, MAHR);
 		u32 malr = sh_eth_read(ndev, MALR);
-
-		ndev->dev_addr[0] = (mahr >> 24) & 0xFF;
-		ndev->dev_addr[1] = (mahr >> 16) & 0xFF;
-		ndev->dev_addr[2] = (mahr >>  8) & 0xFF;
-		ndev->dev_addr[3] = (mahr >>  0) & 0xFF;
-		ndev->dev_addr[4] = (malr >>  8) & 0xFF;
-		ndev->dev_addr[5] = (malr >>  0) & 0xFF;
+		u8 addr[ETH_ALEN];
+
+		addr[0] = (mahr >> 24) & 0xFF;
+		addr[1] = (mahr >> 16) & 0xFF;
+		addr[2] = (mahr >>  8) & 0xFF;
+		addr[3] = (mahr >>  0) & 0xFF;
+		addr[4] = (malr >>  8) & 0xFF;
+		addr[5] = (malr >>  0) & 0xFF;
+		eth_hw_addr_set(ndev, addr);
 	}
 }
 
-- 
2.31.1