node_init.c

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/*
 * Copyright (c) 2020 Intel and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * node_init.c: node march variant startup initialization
 *
 * Copyright (c) 2020 Intel Corporation
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
#include <sys/types.h>
#include <fcntl.h>
#include <vlib/vlib.h>
 
static clib_error_t *
vlib_node_config (vlib_main_t *vm, unformat_input_t *input)
{
  clib_error_t *error = 0;
  unformat_input_t sub_input;
  u32 *march_variant_by_node = 0;
  clib_march_variant_type_t march_variant;
  u32 node_index;
  int i;
 
  /* specify prioritization defaults for all graph nodes */
  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
    {
      if (unformat (input, "default %U", unformat_vlib_cli_sub_input,
                    &sub_input))
        {
          while (unformat_check_input (&sub_input) != UNFORMAT_END_OF_INPUT)
            {
              if (!unformat (&sub_input, "variant %U",
                             unformat_vlib_node_variant, &march_variant))
                return clib_error_return (0,
                                          "please specify a valid node variant");
 
              vec_validate_init_empty (march_variant_by_node,
                                       vec_len (vm->node_main.nodes) - 1, ~0);
              vec_foreach_index (i, march_variant_by_node)
                march_variant_by_node[i] = march_variant;
              vm->node_main.node_fn_default_march_variant = march_variant;
              unformat_free (&sub_input);
            }
        }
      else /* specify prioritization for an individual graph node */
        if (unformat (input, "%U", unformat_vlib_node, vm, &node_index))
        {
          if (unformat (input, "%U", unformat_vlib_cli_sub_input, &sub_input))
            {
              while (unformat_check_input (&sub_input) !=
                     UNFORMAT_END_OF_INPUT)
                {
                  if (!unformat (&sub_input, "variant %U",
                                 unformat_vlib_node_variant, &march_variant))
                    return clib_error_return (0,
                                              "please specify a valid node variant");
                  vec_validate_init_empty (march_variant_by_node, node_index,
                                           ~0);
                  march_variant_by_node[node_index] = march_variant;
                  unformat_free (&sub_input);
                }
            }
        }
      else
        {
          break;
        }
    }
 
  if (march_variant_by_node)
    {
      vec_foreach_index (i, march_variant_by_node)
        if (march_variant_by_node[i] != ~0)
          vlib_node_set_march_variant (vm, i, march_variant_by_node[i]);
      vec_free (march_variant_by_node);
    }
  unformat_free (input);
 
  return error;
}
 
VLIB_CONFIG_FUNCTION (vlib_node_config, "node");
 
/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */