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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);
+
+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:
+ */