net/mlx5: reject jump to root table

Currently root table as destination is not supported.
The jump action which finally be translated to underlying root table in
rdma-core should be rejected.

Fixes: f78f747f41d0 ("net/mlx5: allow jump to group lower than current")
Cc: stable@dpdk.org
Signed-off-by: Xiaoyu Min <jackmin@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 18992b1..af90a7f 100644 (file)
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -4968,7 +4968,7 @@ flow_dv_validate_action_jump(struct rte_eth_dev *dev,
                             const struct rte_flow_attr *attributes,
                             bool external, struct rte_flow_error *error)
 {
-       uint32_t target_group, table;
+       uint32_t target_group, table = 0;
        int ret = 0;
        struct flow_grp_info grp_info = {
                .external = !!external,
@@ -4999,6 +4999,10 @@ flow_dv_validate_action_jump(struct rte_eth_dev *dev,
                                          RTE_FLOW_ERROR_TYPE_ACTION, NULL,
                                          "target group must be other than"
                                          " the current flow group");
+       if (table == 0)
+               return rte_flow_error_set(error, EINVAL,
+                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF,
+                                         NULL, "root table shouldn't be destination");
        return 0;
 }