netdev - [PATCH net-next 08/12] ethernet: enic: use eth_hw_addr

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Date:   Fri, 15 Oct 2021 15:16:48 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        benve@...co.com, _govind@....com
Subject: [PATCH net-next 08/12] ethernet: enic: 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.

Use a zero'ed array on the stack, then call eth_hw_addr_set().

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
CC: benve@...co.com
CC: _govind@....com
---
 drivers/net/ethernet/cisco/enic/enic_main.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
index 66348cc3aaaf..aacf141986d5 100644
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -1098,6 +1098,7 @@ static int enic_set_vf_mac(struct net_device *netdev, int vf, u8 *mac)
 static int enic_set_vf_port(struct net_device *netdev, int vf,
 	struct nlattr *port[])
 {
+	static const u8 zero_addr[ETH_ALEN] = {};
 	struct enic *enic = netdev_priv(netdev);
 	struct enic_port_profile prev_pp;
 	struct enic_port_profile *pp;
@@ -1162,7 +1163,7 @@ static int enic_set_vf_port(struct net_device *netdev, int vf,
 		} else {
 			memset(pp, 0, sizeof(*pp));
 			if (vf == PORT_SELF_VF)
-				eth_zero_addr(netdev->dev_addr);
+				eth_hw_addr_set(netdev, zero_addr);
 		}
 	} else {
 		/* Set flag to indicate that the port assoc/disassoc
@@ -1174,7 +1175,7 @@ static int enic_set_vf_port(struct net_device *netdev, int vf,
 		if (pp->request == PORT_REQUEST_DISASSOCIATE) {
 			eth_zero_addr(pp->mac_addr);
 			if (vf == PORT_SELF_VF)
-				eth_zero_addr(netdev->dev_addr);
+				eth_hw_addr_set(netdev, zero_addr);
 		}
 	}
 
-- 
2.31.1