net/mlx5e: Enable TC offload for ingress MACVLAN

Support offloading of TC rules that filter ingress traffic from a MACVLAN
device, which is attached to uplink representor.

Signed-off-by: Dima Chumak <dchumak@nvidia.com>
Reviewed-by: Vlad Buslov <vladbu@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c
index 8451940..398c676 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/rep/tc.c
@@ -3,6 +3,7 @@
 
 #include <net/dst_metadata.h>
 #include <linux/netdevice.h>
+#include <linux/if_macvlan.h>
 #include <linux/list.h>
 #include <linux/rculist.h>
 #include <linux/rtnetlink.h>
@@ -409,6 +410,13 @@ static void mlx5e_rep_indr_block_unbind(void *cb_priv)
 
 static LIST_HEAD(mlx5e_block_cb_list);
 
+static bool mlx5e_rep_macvlan_mode_supported(const struct net_device *dev)
+{
+       struct macvlan_dev *macvlan = netdev_priv(dev);
+
+       return macvlan->mode == MACVLAN_MODE_PASSTHRU;
+}
+
 static int
 mlx5e_rep_indr_setup_block(struct net_device *netdev, struct Qdisc *sch,
                           struct mlx5e_rep_priv *rpriv,
@@ -422,8 +430,14 @@ mlx5e_rep_indr_setup_block(struct net_device *netdev, struct Qdisc *sch,
        struct flow_block_cb *block_cb;
 
        if (!mlx5e_tc_tun_device_to_offload(priv, netdev) &&
-           !(is_vlan_dev(netdev) && vlan_dev_real_dev(netdev) == rpriv->netdev))
-               return -EOPNOTSUPP;
+           !(is_vlan_dev(netdev) && vlan_dev_real_dev(netdev) == rpriv->netdev)) {
+               if (!(netif_is_macvlan(netdev) && macvlan_dev_real_dev(netdev) == rpriv->netdev))
+                       return -EOPNOTSUPP;
+               if (!mlx5e_rep_macvlan_mode_supported(netdev)) {
+                       netdev_warn(netdev, "Offloading ingress filter is supported only with macvlan passthru mode");
+                       return -EOPNOTSUPP;
+               }
+       }
 
        if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
                return -EOPNOTSUPP;