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/*
* Copyright (c) 2015 Cisco 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.
*/
/*
* config.h: feature configuration
*
* Copyright (c) 2008 Eliot Dresselhaus
*
* 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.
*/
#ifndef included_vnet_config_h
#define included_vnet_config_h
#include <vlib/vlib.h>
#include <vppinfra/heap.h>
typedef struct
{
/* Features are prioritized by index. Smaller indices get
performed first. */
u32 feature_index;
/* VLIB node which performs feature. */
u32 node_index;
/* Next index relative to previous node or main node. */
u32 next_index;
/* Opaque per feature configuration data. */
u32 *feature_config;
} vnet_config_feature_t;
always_inline void
vnet_config_feature_free (vnet_config_feature_t * f)
{
vec_free (f->feature_config);
}
typedef struct
{
/* Sorted vector of features for this configuration. */
vnet_config_feature_t *features;
/* Config string as vector for hashing. */
u32 *config_string_vector;
/* Config string including all next indices and feature data as a vector. */
u32 config_string_heap_index, config_string_heap_handle;
/* Index in main pool. */
u32 index;
/* Number of interfaces/traffic classes that reference this config. */
u32 reference_count;
} vnet_config_t;
typedef struct
{
/* Pool of configs. Index 0 is always null config and is never deleted. */
vnet_config_t *config_pool;
/* Hash table mapping vector config string to config pool index. */
uword *config_string_hash;
/* Global heap of configuration data. */
u32 *config_string_heap;
/* Node index which starts/ends feature processing. */
u32 *start_node_indices, end_node_index;
/* Interior feature processing nodes (not including start and end nodes). */
u32 *node_index_by_feature_index;
/* vnet_config pool index by user index */
u32 *config_pool_index_by_user_index;
/* Temporary vector for holding config strings. Used to avoid continually
allocating vectors. */
u32 *config_string_temp;
} vnet_config_main_t;
always_inline void
vnet_config_free (vnet_config_main_t * cm, vnet_config_t * c)
{
vnet_config_feature_t *f;
vec_foreach (f, c->features) vnet_config_feature_free (f);
vec_free (c->features);
heap_dealloc (cm->config_string_heap, c->config_string_heap_handle);
vec_free (c->config_string_vector);
}
always_inline void *
vnet_get_config_data (vnet_config_main_t * cm,
u32 * config_index, u32 * next_index, u32 n_data_bytes)
{
u32 i, n, *d;
i = *config_index;
d = heap_elt_at_index (cm->config_string_heap, i);
n = round_pow2 (n_data_bytes, sizeof (d[0])) / sizeof (d[0]);
/* Last 32 bits are next index. */
*next_index = d[n];
/* Advance config index to next config. */
*config_index = (i + n + 1);
/* Return config data to user for this feature. */
return (void *) d;
}
void vnet_config_init (vlib_main_t * vm,
vnet_config_main_t * cm,
char *start_node_names[],
int n_start_node_names,
char *feature_node_names[], int n_feature_node_names);
/* Calls to add/delete features from configurations. */
u32 vnet_config_add_feature (vlib_main_t * vm,
vnet_config_main_t * cm,
u32 config_id,
u32 feature_index,
void *feature_config,
u32 n_feature_config_bytes);
u32 vnet_config_del_feature (vlib_main_t * vm,
vnet_config_main_t * cm,
u32 config_id,
u32 feature_index,
void *feature_config,
u32 n_feature_config_bytes);
u32 vnet_config_modify_end_node (vlib_main_t * vm,
vnet_config_main_t * cm,
u32 config_string_heap_index,
u32 end_node_index);
u8 *vnet_config_format_features (vlib_main_t * vm,
vnet_config_main_t * cm,
u32 config_index, u8 * s);
#endif /* included_vnet_config_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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