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Diffstat (limited to 'src/vnet/config.h')
| -rw-r--r-- | src/vnet/config.h | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/src/vnet/config.h b/src/vnet/config.h new file mode 100644 index 00000000000..b77a7794a6e --- /dev/null +++ b/src/vnet/config.h @@ -0,0 +1,176 @@ +/* + * 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); + +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: + */ |