mlxsw: spectrum_flower: Offload goto_chain termination action

If action is gact goto_chain, offload it to HW by jumping to another
ruleset.
Signed-off-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c

@@ -45,7 +45,7 @@
 #include "core_acl_flex_keys.h"
 
 static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
-					 struct net_device *dev,
+					 struct net_device *dev, bool ingress,
 					 struct mlxsw_sp_acl_rule_info *rulei,
 					 struct tcf_exts *exts)
 {
@@ -71,6 +71,20 @@ static int mlxsw_sp_flower_parse_actions(struct mlxsw_sp *mlxsw_sp,
 			err = mlxsw_sp_acl_rulei_act_trap(rulei);
 			if (err)
 				return err;
+		} else if (is_tcf_gact_goto_chain(a)) {
+			u32 chain_index = tcf_gact_goto_chain_index(a);
+			struct mlxsw_sp_acl_ruleset *ruleset;
+			u16 group_id;
+
+			ruleset = mlxsw_sp_acl_ruleset_lookup(mlxsw_sp, dev,
+							      ingress,
+							      chain_index,
+							      MLXSW_SP_ACL_PROFILE_FLOWER);
+			if (IS_ERR(ruleset))
+				return PTR_ERR(ruleset);
+
+			group_id = mlxsw_sp_acl_ruleset_group_id(ruleset);
+			mlxsw_sp_acl_rulei_act_jump(rulei, group_id);
 		} else if (is_tcf_mirred_egress_redirect(a)) {
 			int ifindex = tcf_mirred_ifindex(a);
 			struct net_device *out_dev;
@@ -246,7 +260,7 @@ static int mlxsw_sp_flower_parse_ip(struct mlxsw_sp *mlxsw_sp,
 }
 
 static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp,
-				 struct net_device *dev,
+				 struct net_device *dev, bool ingress,
 				 struct mlxsw_sp_acl_rule_info *rulei,
 				 struct tc_cls_flower_offload *f)
 {
@@ -364,7 +378,8 @@ static int mlxsw_sp_flower_parse(struct mlxsw_sp *mlxsw_sp,
 	if (err)
 		return err;
 
-	return mlxsw_sp_flower_parse_actions(mlxsw_sp, dev, rulei, f->exts);
+	return mlxsw_sp_flower_parse_actions(mlxsw_sp, dev, ingress,
+					     rulei, f->exts);
 }
 
 int mlxsw_sp_flower_replace(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
@@ -390,7 +405,7 @@ int mlxsw_sp_flower_replace(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
 	}
 
 	rulei = mlxsw_sp_acl_rule_rulei(rule);
-	err = mlxsw_sp_flower_parse(mlxsw_sp, dev, rulei, f);
+	err = mlxsw_sp_flower_parse(mlxsw_sp, dev, ingress, rulei, f);
 	if (err)
 		goto err_flower_parse;