/* * 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. */ /* * hdlc.h: types/functions for hdlc. * * 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_hdlc_h #define included_hdlc_h #include <vnet/vnet.h> #include <vnet/hdlc/packet.h> #include <vnet/pg/pg.h> extern vnet_hw_interface_class_t hdlc_hw_interface_class; typedef enum { #define hdlc_error(n,s) HDLC_ERROR_##n, #include <vnet/hdlc/error.def> #undef hdlc_error HDLC_N_ERROR, } hdlc_error_t; typedef struct { /* Name (a c string). */ char * name; /* HDLC protocol type in host byte order. */ hdlc_protocol_t protocol; /* Node which handles this type. */ u32 node_index; /* Next index for this type. */ u32 next_index; } hdlc_protocol_info_t; typedef struct { vlib_main_t * vlib_main; hdlc_protocol_info_t * protocol_infos; /* Hash tables mapping name/protocol to protocol info index. */ uword * protocol_info_by_name, * protocol_info_by_protocol; } hdlc_main_t; always_inline hdlc_protocol_info_t * hdlc_get_protocol_info (hdlc_main_t * em, hdlc_protocol_t protocol) { uword * p = hash_get (em->protocol_info_by_protocol, protocol); return p ? vec_elt_at_index (em->protocol_infos, p[0]) : 0; } extern hdlc_main_t hdlc_main; /* Register given node index to take input for given hdlc type. */ void hdlc_register_input_type (vlib_main_t * vm, hdlc_protocol_t protocol, u32 node_index); format_function_t format_hdlc_protocol; format_function_t format_hdlc_header; format_function_t format_hdlc_header_with_length; /* Parse hdlc protocol as 0xXXXX or protocol name. In either host or network byte order. */ unformat_function_t unformat_hdlc_protocol_host_byte_order; unformat_function_t unformat_hdlc_protocol_net_byte_order; /* Parse hdlc header. */ unformat_function_t unformat_hdlc_header; unformat_function_t unformat_pg_hdlc_header; always_inline void hdlc_setup_node (vlib_main_t * vm, u32 node_index) { vlib_node_t * n = vlib_get_node (vm, node_index); pg_node_t * pn = pg_get_node (node_index); n->format_buffer = format_hdlc_header_with_length; n->unformat_buffer = unformat_hdlc_header; pn->unformat_edit = unformat_pg_hdlc_header; } void hdlc_register_input_protocol (vlib_main_t * vm, hdlc_protocol_t protocol, u32 node_index); #endif /* included_hdlc_h */