4 files changed, 78 insertions, 4 deletions

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_hw.c b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
index 945c13d1a9..c09a6f7445 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_hw.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_hw.c
@@ -1958,6 +1958,8 @@ int wx_sw_init(struct wx *wx)
 		return -ENOMEM;
 	}
 
+	bitmap_zero(wx->state, WX_STATE_NBITS);
+
 	return 0;
 }
 EXPORT_SYMBOL(wx_sw_init);
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
index 6fae161cbc..07ba3a270a 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -2690,15 +2690,63 @@ int wx_set_features(struct net_device *netdev, netdev_features_t features)
 		wx->rss_enabled = false;
 	}
 
-	if (changed &
-	    (NETIF_F_HW_VLAN_CTAG_RX |
-	     NETIF_F_HW_VLAN_STAG_RX))
+	netdev->features = features;
+
+	if (wx->mac.type == wx_mac_sp && changed & NETIF_F_HW_VLAN_CTAG_RX)
+		wx->do_reset(netdev);
+	else if (changed & (NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_FILTER))
 		wx_set_rx_mode(netdev);
 
-	return 1;
+	return 0;
 }
 EXPORT_SYMBOL(wx_set_features);
 
+#define NETIF_VLAN_STRIPPING_FEATURES	(NETIF_F_HW_VLAN_CTAG_RX | \
+					 NETIF_F_HW_VLAN_STAG_RX)
+
+#define NETIF_VLAN_INSERTION_FEATURES	(NETIF_F_HW_VLAN_CTAG_TX | \
+					 NETIF_F_HW_VLAN_STAG_TX)
+
+#define NETIF_VLAN_FILTERING_FEATURES	(NETIF_F_HW_VLAN_CTAG_FILTER | \
+					 NETIF_F_HW_VLAN_STAG_FILTER)
+
+netdev_features_t wx_fix_features(struct net_device *netdev,
+				  netdev_features_t features)
+{
+	netdev_features_t changed = netdev->features ^ features;
+	struct wx *wx = netdev_priv(netdev);
+
+	if (changed & NETIF_VLAN_STRIPPING_FEATURES) {
+		if ((features & NETIF_VLAN_STRIPPING_FEATURES) != NETIF_VLAN_STRIPPING_FEATURES &&
+		    (features & NETIF_VLAN_STRIPPING_FEATURES) != 0) {
+			features &= ~NETIF_VLAN_STRIPPING_FEATURES;
+			features |= netdev->features & NETIF_VLAN_STRIPPING_FEATURES;
+			wx_err(wx, "802.1Q and 802.1ad VLAN stripping must be either both on or both off.");
+		}
+	}
+
+	if (changed & NETIF_VLAN_INSERTION_FEATURES) {
+		if ((features & NETIF_VLAN_INSERTION_FEATURES) != NETIF_VLAN_INSERTION_FEATURES &&
+		    (features & NETIF_VLAN_INSERTION_FEATURES) != 0) {
+			features &= ~NETIF_VLAN_INSERTION_FEATURES;
+			features |= netdev->features & NETIF_VLAN_INSERTION_FEATURES;
+			wx_err(wx, "802.1Q and 802.1ad VLAN insertion must be either both on or both off.");
+		}
+	}
+
+	if (changed & NETIF_VLAN_FILTERING_FEATURES) {
+		if ((features & NETIF_VLAN_FILTERING_FEATURES) != NETIF_VLAN_FILTERING_FEATURES &&
+		    (features & NETIF_VLAN_FILTERING_FEATURES) != 0) {
+			features &= ~NETIF_VLAN_FILTERING_FEATURES;
+			features |= netdev->features & NETIF_VLAN_FILTERING_FEATURES;
+			wx_err(wx, "802.1Q and 802.1ad VLAN filtering must be either both on or both off.");
+		}
+	}
+
+	return features;
+}
+EXPORT_SYMBOL(wx_fix_features);
+
 void wx_set_ring(struct wx *wx, u32 new_tx_count,
 		 u32 new_rx_count, struct wx_ring *temp_ring)
 {
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.h b/drivers/net/ethernet/wangxun/libwx/wx_lib.h
index ec909e8767..c41b29ea81 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.h
@@ -30,6 +30,8 @@ int wx_setup_resources(struct wx *wx);
 void wx_get_stats64(struct net_device *netdev,
 		    struct rtnl_link_stats64 *stats);
 int wx_set_features(struct net_device *netdev, netdev_features_t features);
+netdev_features_t wx_fix_features(struct net_device *netdev,
+				  netdev_features_t features);
 void wx_set_ring(struct wx *wx, u32 new_tx_count,
 		 u32 new_rx_count, struct wx_ring *temp_ring);
 
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index 1fdeb464d5..5aaf7b1fa2 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -982,8 +982,13 @@ struct wx_hw_stats {
 	u64 qmprc;
 };
 
+enum wx_state {
+	WX_STATE_RESETTING,
+	WX_STATE_NBITS,		/* must be last */
+};
 struct wx {
 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
+	DECLARE_BITMAP(state, WX_STATE_NBITS);
 
 	void *priv;
 	u8 __iomem *hw_addr;
@@ -1071,6 +1076,8 @@ struct wx {
 	u64 hw_csum_rx_good;
 	u64 hw_csum_rx_error;
 	u64 alloc_rx_buff_failed;
+
+	void (*do_reset)(struct net_device *netdev);
 };
 
 #define WX_INTR_ALL (~0ULL)
@@ -1131,4 +1138,19 @@ static inline struct wx *phylink_to_wx(struct phylink_config *config)
 	return container_of(config, struct wx, phylink_config);
 }
 
+static inline int wx_set_state_reset(struct wx *wx)
+{
+	u8 timeout = 50;
+
+	while (test_and_set_bit(WX_STATE_RESETTING, wx->state)) {
+		timeout--;
+		if (!timeout)
+			return -EBUSY;
+
+		usleep_range(1000, 2000);
+	}
+
+	return 0;
+}
+
 #endif /* _WX_TYPE_H_ */