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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.
*/
/*
* 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);
void hdlc_set_adjacency (vnet_rewrite_header_t * rw,
uword max_data_bytes,
hdlc_protocol_t protocol);
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 */
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