From: Jian Shen <shenjian15@huawei.com>
Date: Fri, 1 Jun 2018 17:52:03 +0100
Subject: net: hns3: Add repeat address checking for setting mac address
Patch-mainline: v4.18-rc1
Git-commit: 5ec2a51ef8e2cb1fd1f04a8a7170001ab94d36fe
References: bsc#1104353 FATE#326415
Add checking for new mac address. It doesn't need to config
the mac vlan table if it's already in use.
Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 6 ++++++
1 file changed, 6 insertions(+)
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -1131,6 +1131,12 @@ static int hns3_nic_net_set_mac_address(
if (!mac_addr || !is_valid_ether_addr((const u8 *)mac_addr->sa_data))
return -EADDRNOTAVAIL;
+ if (ether_addr_equal(netdev->dev_addr, mac_addr->sa_data)) {
+ netdev_info(netdev, "already using mac address %pM\n",
+ mac_addr->sa_data);
+ return 0;
+ }
+
ret = h->ae_algo->ops->set_mac_addr(h, mac_addr->sa_data, false);
if (ret) {
netdev_err(netdev, "set_mac_address fail, ret=%d!\n", ret);