net/mlx5: Remove encap entry pointer from the eswitch flow attributes

Encap wise, the tc eswitch flow attribute struct needs to have
only the encap ID which is programmed later to the HW and none
of the higher level encap params, fix that.

This patch doesn't change any functionality.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/en_tc.c

@@ -1362,16 +1362,18 @@ out:
 static int mlx5e_attach_encap(struct mlx5e_priv *priv,
 			      struct ip_tunnel_info *tun_info,
 			      struct net_device *mirred_dev,
-			      struct mlx5_esw_flow_attr *attr)
+			      struct net_device **encap_dev,
+			      struct mlx5e_tc_flow *flow)
 {
 	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 	struct net_device *up_dev = mlx5_eswitch_get_uplink_netdev(esw);
-	struct mlx5e_priv *up_priv = netdev_priv(up_dev);
 	unsigned short family = ip_tunnel_info_af(tun_info);
+	struct mlx5e_priv *up_priv = netdev_priv(up_dev);
+	struct mlx5_esw_flow_attr *attr = flow->esw_attr;
 	struct ip_tunnel_key *key = &tun_info->key;
 	struct mlx5_encap_entry *e;
 	struct net_device *out_dev;
-	int tunnel_type, err = -EOPNOTSUPP;
+	int tunnel_type, err = 0;
 	uintptr_t hash_key;
 	bool found = false;
 
@@ -1406,10 +1408,8 @@ vxlan_encap_offload_err:
 		}
 	}
 
-	if (found) {
-		attr->encap = e;
-		return 0;
-	}
+	if (found)
+		goto attach_flow;
 
 	e = kzalloc(sizeof(*e), GFP_KERNEL);
 	if (!e)
@@ -1427,10 +1427,14 @@ vxlan_encap_offload_err:
 	if (err)
 		goto out_err;
 
-	attr->encap = e;
 	hash_add_rcu(esw->offloads.encap_tbl, &e->encap_hlist, hash_key);
 
-	return err;
+attach_flow:
+	list_add(&flow->encap, &e->flows);
+	*encap_dev = e->out_dev;
+	attr->encap_id = e->encap_id;
+
+	return 0;
 
 out_err:
 	kfree(e);
@@ -1475,7 +1479,7 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
 
 		if (is_tcf_mirred_egress_redirect(a)) {
 			int ifindex = tcf_mirred_ifindex(a);
-			struct net_device *out_dev;
+			struct net_device *out_dev, *encap_dev = NULL;
 			struct mlx5e_priv *out_priv;
 
 			out_dev = __dev_get_by_index(dev_net(priv->netdev), ifindex);
@@ -1489,14 +1493,13 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
 				attr->out_rep = rpriv->rep;
 			} else if (encap) {
 				err = mlx5e_attach_encap(priv, info,
-							 out_dev, attr);
+							 out_dev, &encap_dev, flow);
 				if (err)
 					return err;
-				list_add(&flow->encap, &attr->encap->flows);
 				attr->action |= MLX5_FLOW_CONTEXT_ACTION_ENCAP |
 					MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
 					MLX5_FLOW_CONTEXT_ACTION_COUNT;
-				out_priv = netdev_priv(attr->encap->out_dev);
+				out_priv = netdev_priv(encap_dev);
 				rpriv = out_priv->ppriv;
 				attr->out_rep = rpriv->rep;
 			} else {

drivers/net/ethernet/mellanox/mlx5/core/eswitch.h

@@ -308,7 +308,7 @@ struct mlx5_esw_flow_attr {
 	int	action;
 	u16	vlan;
 	bool	vlan_handled;
-	struct mlx5_encap_entry *encap;
+	u32	encap_id;
 	u32	mod_hdr_id;
 };
 

drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c

@@ -92,7 +92,7 @@ mlx5_eswitch_add_offloaded_rule(struct mlx5_eswitch *esw,
 		flow_act.modify_id = attr->mod_hdr_id;
 
 	if (attr->action & MLX5_FLOW_CONTEXT_ACTION_ENCAP)
-		flow_act.encap_id = attr->encap->encap_id;
+		flow_act.encap_id = attr->encap_id;
 
 	rule = mlx5_add_flow_rules((struct mlx5_flow_table *)esw->fdb_table.fdb,
 				   spec, &flow_act, dest, i);