[PATCH net-next 07/12] net: hns3: fix for loopback failure when vlan filter is enable

From: Peng Li
Date: Fri Mar 09 2018 - 22:00:03 EST


From: Yunsheng Lin <linyunsheng@xxxxxxxxxx>

When vlan ctag filter is enabled, the loopback selftest fails because
loopback selftest does not support vlan.

This patch fixes it by disabling the vlan ctag filter when runnig
loopback selftest.

Signed-off-by: Yunsheng Lin <linyunsheng@xxxxxxxxxx>
Signed-off-by: Peng Li <lipeng321@xxxxxxxxxx>
---
drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
index 26274bc..2db127c 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c
@@ -309,6 +309,9 @@ static void hns3_self_test(struct net_device *ndev,
struct hnae3_handle *h = priv->ae_handle;
int st_param[HNS3_SELF_TEST_TPYE_NUM][2];
bool if_running = netif_running(ndev);
+#if IS_ENABLED(CONFIG_VLAN_8021Q)
+ bool dis_vlan_filter;
+#endif
int test_index = 0;
u32 i;

@@ -323,6 +326,14 @@ static void hns3_self_test(struct net_device *ndev,
if (if_running)
dev_close(ndev);

+#if IS_ENABLED(CONFIG_VLAN_8021Q)
+ /* Disable the vlan filter for selftest does not support it */
+ dis_vlan_filter = (ndev->features & NETIF_F_HW_VLAN_CTAG_FILTER) &&
+ h->ae_algo->ops->enable_vlan_filter;
+ if (dis_vlan_filter)
+ h->ae_algo->ops->enable_vlan_filter(h, false);
+#endif
+
set_bit(HNS3_NIC_STATE_TESTING, &priv->state);

for (i = 0; i < HNS3_SELF_TEST_TPYE_NUM; i++) {
@@ -345,6 +356,11 @@ static void hns3_self_test(struct net_device *ndev,

clear_bit(HNS3_NIC_STATE_TESTING, &priv->state);

+#if IS_ENABLED(CONFIG_VLAN_8021Q)
+ if (dis_vlan_filter)
+ h->ae_algo->ops->enable_vlan_filter(h, true);
+#endif
+
if (if_running)
dev_open(ndev);
}
--
2.9.3