net/mlx5e: Use helpers to get headers criteria and value pointers

The headers criteria and value pointers may be either of the inner
packet, if a tunnel exists, or of the outer. Simplify the code by using
helper functions to retrieve them.

Signed-off-by: Eli Britstein <elibr@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 7c1ea0a..81f8ac5 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -1438,6 +1438,26 @@ static int parse_tunnel_attr(struct mlx5e_priv *priv,
        return 0;
 }
 
+static void *get_match_headers_criteria(u32 flags,
+                                       struct mlx5_flow_spec *spec)
+{
+       return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
+               MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
+                            inner_headers) :
+               MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
+                            outer_headers);
+}
+
+static void *get_match_headers_value(u32 flags,
+                                    struct mlx5_flow_spec *spec)
+{
+       return (flags & MLX5_FLOW_CONTEXT_ACTION_DECAP) ?
+               MLX5_ADDR_OF(fte_match_param, spec->match_value,
+                            inner_headers) :
+               MLX5_ADDR_OF(fte_match_param, spec->match_value,
+                            outer_headers);
+}
+
 static int __parse_cls_flower(struct mlx5e_priv *priv,
                              struct mlx5_flow_spec *spec,
                              struct tc_cls_flower_offload *f,
@@ -1503,10 +1523,10 @@ static int __parse_cls_flower(struct mlx5e_priv *priv,
                /* In decap flow, header pointers should point to the inner
                 * headers, outer header were already set by parse_tunnel_attr
                 */
-               headers_c = MLX5_ADDR_OF(fte_match_param, spec->match_criteria,
-                                        inner_headers);
-               headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value,
-                                        inner_headers);
+               headers_c = get_match_headers_criteria(MLX5_FLOW_CONTEXT_ACTION_DECAP,
+                                                      spec);
+               headers_v = get_match_headers_value(MLX5_FLOW_CONTEXT_ACTION_DECAP,
+                                                   spec);
        }
 
        if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_BASIC)) {
@@ -2184,11 +2204,7 @@ static bool modify_header_match_supported(struct mlx5_flow_spec *spec,
        u16 ethertype;
        int i;
 
-       if (actions & MLX5_FLOW_CONTEXT_ACTION_DECAP)
-               headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, inner_headers);
-       else
-               headers_v = MLX5_ADDR_OF(fte_match_param, spec->match_value, outer_headers);
-
+       headers_v = get_match_headers_value(actions, spec);
        ethertype = MLX5_GET(fte_match_set_lyr_2_4, headers_v, ethertype);
 
        /* for non-IP we only re-write MACs, so we're okay */