/* * 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. */ /* * l2_rw is based on vnet classifier and provides a way * to modify packets matching a given table. * * Tables must be created using vnet's classify features. * Entries contained within these tables must have their * opaque index set to the rewrite entry created with l2_rw_mod_entry. */ #ifndef L2_RW_H_ #define L2_RW_H_ #include <vnet/l2/l2_input.h> /* *INDENT-OFF* */ typedef CLIB_PACKED(struct _l2_rw_entry { u16 skip_n_vectors; u16 rewrite_n_vectors; u64 hit_count; u32x4 *mask; u32x4 *value; }) l2_rw_entry_t; /* *INDENT-ON* */ /* l2_rw configuration for one interface */ /* *INDENT-OFF* */ typedef CLIB_PACKED(struct _l2_rw_config { u32 table_index; /* Which classify table to use */ u32 miss_index; /* Rewrite entry to use if table does not match */ }) l2_rw_config_t; /* *INDENT-ON* */ typedef struct { /* Next feature node indexes */ u32 feat_next_node_index[32]; /* A pool of entries */ l2_rw_entry_t *entries; /* Config vector indexed by sw_if_index */ l2_rw_config_t *configs; uword *configs_bitmap; } l2_rw_main_t; extern l2_rw_main_t l2_rw_main; /* * Specifies which classify table and miss_index should be used * with the given interface. * Use special values ~0 in order to un-set table_index * or miss_index. * l2_rw feature is automatically enabled for the interface * when table_index or miss_index is not ~0. * returns 0 on success and something else on error. */ int l2_rw_interface_set_table (u32 sw_if_index, u32 table_index, u32 miss_index); /* * Creates, modifies or delete a rewrite entry. * If *index != ~0, modifies an existing entry (or simply * deletes it if is_del is set). * If *index == ~0, creates a new entry and the created * entry index is stored in *index (Does nothing if is_del * is set). * returns 0 on success and something else on error. */ int l2_rw_mod_entry (u32 * index, u8 * mask, u8 * value, u32 len, u32 skip, u8 is_del); extern vlib_node_registration_t l2_rw_node; #endif /* L2_FW_H_ */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */