net/mlx5: DR, Add check for flex parser ID value

Allow only legal values for flex parser ID - values from 0 to 7.
For other values skip the parser, and as a result the matcher creation
will fail for using invalid flex parser ID.
Signed-off-by: Hamdan Igbaria <hamdani@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v0.c

@@ -1704,7 +1704,7 @@ static void dr_ste_v0_set_flex_parser(u32 *misc4_field_id,
 	u32 id = *misc4_field_id;
 	u8 *parser_ptr;
 
-	if (parser_is_used[id])
+	if (id >= DR_NUM_OF_FLEX_PARSERS || parser_is_used[id])
 		return;
 
 	parser_is_used[id] = true;

drivers/net/ethernet/mellanox/mlx5/core/steering/dr_ste_v1.c

@@ -1833,7 +1833,7 @@ static void dr_ste_v1_set_flex_parser(u32 *misc4_field_id,
 	u32 id = *misc4_field_id;
 	u8 *parser_ptr;
 
-	if (parser_is_used[id])
+	if (id >= DR_NUM_OF_FLEX_PARSERS || parser_is_used[id])
 		return;
 
 	parser_is_used[id] = true;