netdev - [PATCH net-next 2/7] ethernet: make eth_hw_addr_random() use dev_addr

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Message-Id: <20211013204435.322561-3-kuba@kernel.org>
Date:   Wed, 13 Oct 2021 13:44:30 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 2/7] ethernet: make eth_hw_addr_random() use dev_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.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 include/linux/etherdevice.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index 3cf546d2ffd1..76f7ff684cbf 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -269,8 +269,11 @@ static inline void eth_zero_addr(u8 *addr)
  */
 static inline void eth_hw_addr_random(struct net_device *dev)
 {
+	u8 addr[ETH_ALEN];
+
+	eth_random_addr(addr);
+	__dev_addr_set(dev, addr, ETH_ALEN);
 	dev->addr_assign_type = NET_ADDR_RANDOM;
-	eth_random_addr(dev->dev_addr);
 }
 
 /**
-- 
2.31.1