[PATCH 1/2] net: dsa: Add flag for 802.1AD when adding VLAN for dsa switch and port

[hongbo . wang]

From: "hongbo.wang" <hongbo.w...@nxp.com>

the following command can be supported:
ip link add link swp1 name swp1.100 type vlan protocol 802.1ad id 100

Signed-off-by: hongbo.wang <hongbo.w...@nxp.com>
---
 include/uapi/linux/if_bridge.h | 1 +
 net/dsa/slave.c                | 9 +++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/include/uapi/linux/if_bridge.h b/include/uapi/linux/if_bridge.h
index caa6914a3e53..ecd960aa65c7 100644
--- a/include/uapi/linux/if_bridge.h
+++ b/include/uapi/linux/if_bridge.h
@@ -132,6 +132,7 @@ enum {
 #define BRIDGE_VLAN_INFO_RANGE_END     (1<<4) /* VLAN is end of vlan range */
 #define BRIDGE_VLAN_INFO_BRENTRY       (1<<5) /* Global bridge VLAN entry */
 #define BRIDGE_VLAN_INFO_ONLY_OPTS     (1<<6) /* Skip create/delete/flags */
+#define BRIDGE_VLAN_INFO_8021AD        (1<<7) /* VLAN is 802.1AD protocol */
 
 struct bridge_vlan_info {
        __u16 flags;
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 4c7f086a047b..376d7ac5f1e5 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1232,6 +1232,7 @@ static int dsa_slave_get_ts_info(struct net_device *dev,
 static int dsa_slave_vlan_rx_add_vid(struct net_device *dev, __be16 proto,
                                     u16 vid)
 {
+       u16 flags = 0;
        struct dsa_port *dp = dsa_slave_to_port(dev);
        struct bridge_vlan_info info;
        int ret;
@@ -1252,7 +1253,10 @@ static int dsa_slave_vlan_rx_add_vid(struct net_device 
*dev, __be16 proto,
                        return -EBUSY;
        }
 
-       ret = dsa_port_vid_add(dp, vid, 0);
+       if (ntohs(proto) == ETH_P_8021AD)
+               flags |= BRIDGE_VLAN_INFO_8021AD;
+
+       ret = dsa_port_vid_add(dp, vid, flags);
        if (ret)
                return ret;
 
@@ -1744,7 +1748,8 @@ int dsa_slave_create(struct dsa_port *port)
 
        slave_dev->features = master->vlan_features | NETIF_F_HW_TC;
        if (ds->ops->port_vlan_add && ds->ops->port_vlan_del)
-               slave_dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER;
+               slave_dev->features |= NETIF_F_HW_VLAN_CTAG_FILTER |
+                                      NETIF_F_HW_VLAN_STAG_FILTER;
        slave_dev->hw_features |= NETIF_F_HW_TC;
        slave_dev->features |= NETIF_F_LLTX;
        slave_dev->ethtool_ops = &dsa_slave_ethtool_ops;
-- 
2.17.1