From: Jian Shen <shenjian15@huawei.com>
Date: Fri, 12 Oct 2018 15:34:06 +0100
Subject: net: hns3: Resume promisc mode and vlan filter status after loopback
 test
Patch-mainline: v4.20-rc1
Git-commit: 829edbd8d45e2f5c384a0b6c741cde46e0fa02a8
References: bsc#1104353 FATE#326415

This patch resumes promisc mode and vlan filter status after
loopback test.

Fixes: 3b75c3df599d ("net: hns3: net: hns3: Add support for IFF_ALLMULTI flag")
Signed-off-by: Jian Shen <shenjian15@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_ethtool.c |   10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -71,6 +71,7 @@ struct hns3_link_mode_mapping {
 static int hns3_lp_setup(struct net_device *ndev, enum hnae3_loop loop, bool en)
 {
 	struct hnae3_handle *h = hns3_get_handle(ndev);
+	bool vlan_filter_enable;
 	int ret;
 
 	if (!h->ae_algo->ops->set_loopback ||
@@ -91,7 +92,14 @@ static int hns3_lp_setup(struct net_devi
 	if (ret)
 		return ret;
 
-	h->ae_algo->ops->set_promisc_mode(h, en, en);
+	if (en) {
+		h->ae_algo->ops->set_promisc_mode(h, true, true);
+	} else {
+		/* recover promisc mode before loopback test */
+		hns3_update_promisc_mode(ndev, h->netdev_flags);
+		vlan_filter_enable = ndev->flags & IFF_PROMISC ? false : true;
+		hns3_enable_vlan_filter(ndev, vlan_filter_enable);
+	}
 
 	return ret;
 }