2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 * osi.h: OSI definitions
18 * Copyright (c) 2008 Eliot Dresselhaus
20 * Permission is hereby granted, free of charge, to any person obtaining
21 * a copy of this software and associated documentation files (the
22 * "Software"), to deal in the Software without restriction, including
23 * without limitation the rights to use, copy, modify, merge, publish,
24 * distribute, sublicense, and/or sell copies of the Software, and to
25 * permit persons to whom the Software is furnished to do so, subject to
26 * the following conditions:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 #ifndef included_osi_h
41 #define included_osi_h
43 #include <vnet/vnet.h>
44 #include <vnet/pg/pg.h>
46 #define foreach_osi_protocol \
63 _ (compressed, 0xb0) \
69 #define _(f,n) OSI_PROTOCOL_##f = n,
81 /* Name (a c string). */
84 /* OSI protocol (SAP type). */
85 osi_protocol_t protocol;
87 /* Node which handles this type. */
90 /* Next index for this type. */
92 } osi_protocol_info_t;
94 #define foreach_osi_error \
95 _ (NONE, "no error") \
96 _ (UNKNOWN_PROTOCOL, "unknown osi protocol")
99 #define _(f,s) OSI_ERROR_##f,
106 vlib_main_t * vlib_main;
108 osi_protocol_info_t * protocol_infos;
110 /* Hash tables mapping name/protocol to protocol info index. */
111 uword * protocol_info_by_name, * protocol_info_by_protocol;
113 /* osi-input next index indexed by protocol. */
114 u8 input_next_by_protocol[256];
117 always_inline osi_protocol_info_t *
118 osi_get_protocol_info (osi_main_t * m, osi_protocol_t protocol)
120 uword * p = hash_get (m->protocol_info_by_protocol, protocol);
121 return p ? vec_elt_at_index (m->protocol_infos, p[0]) : 0;
124 extern osi_main_t osi_main;
126 /* Register given node index to take input for given osi type. */
128 osi_register_input_protocol (osi_protocol_t protocol,
131 void osi_set_adjacency (vnet_rewrite_header_t * rw,
132 uword max_data_bytes,
133 osi_protocol_t protocol);
135 format_function_t format_osi_protocol;
136 format_function_t format_osi_header;
137 format_function_t format_osi_header_with_length;
139 /* Parse osi protocol as 0xXXXX or protocol name. */
140 unformat_function_t unformat_osi_protocol;
142 /* Parse osi header. */
143 unformat_function_t unformat_osi_header;
144 unformat_function_t unformat_pg_osi_header;
147 osi_setup_node (vlib_main_t * vm, u32 node_index)
149 vlib_node_t * n = vlib_get_node (vm, node_index);
150 pg_node_t * pn = pg_get_node (node_index);
152 n->format_buffer = format_osi_header_with_length;
153 n->unformat_buffer = unformat_osi_header;
154 pn->unformat_edit = unformat_pg_osi_header;
158 osi_register_input_protocol (osi_protocol_t protocol,
161 format_function_t format_osi_header;
163 #endif /* included_osi_h */