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) \
70 #define _(f,n) OSI_PROTOCOL_##f = n,
84 /* Name (a c string). */
87 /* OSI protocol (SAP type). */
88 osi_protocol_t protocol;
90 /* Node which handles this type. */
93 /* Next index for this type. */
95 } osi_protocol_info_t;
97 #define foreach_osi_error \
98 _ (NONE, "no error") \
99 _ (UNKNOWN_PROTOCOL, "unknown osi protocol")
103 #define _(f,s) OSI_ERROR_##f,
111 vlib_main_t *vlib_main;
113 osi_protocol_info_t *protocol_infos;
115 /* Hash tables mapping name/protocol to protocol info index. */
116 uword *protocol_info_by_name, *protocol_info_by_protocol;
118 /* osi-input next index indexed by protocol. */
119 u8 input_next_by_protocol[256];
122 always_inline osi_protocol_info_t *
123 osi_get_protocol_info (osi_main_t * m, osi_protocol_t protocol)
125 uword *p = hash_get (m->protocol_info_by_protocol, protocol);
126 return p ? vec_elt_at_index (m->protocol_infos, p[0]) : 0;
129 extern osi_main_t osi_main;
131 /* Register given node index to take input for given osi type. */
132 void osi_register_input_protocol (osi_protocol_t protocol, u32 node_index);
134 format_function_t format_osi_protocol;
135 format_function_t format_osi_header;
136 format_function_t format_osi_header_with_length;
138 /* Parse osi protocol as 0xXXXX or protocol name. */
139 unformat_function_t unformat_osi_protocol;
141 /* Parse osi header. */
142 unformat_function_t unformat_osi_header;
143 unformat_function_t unformat_pg_osi_header;
146 osi_setup_node (vlib_main_t * vm, u32 node_index)
148 vlib_node_t *n = vlib_get_node (vm, node_index);
149 pg_node_t *pn = pg_get_node (node_index);
151 n->format_buffer = format_osi_header_with_length;
152 n->unformat_buffer = unformat_osi_header;
153 pn->unformat_edit = unformat_pg_osi_header;
156 void osi_register_input_protocol (osi_protocol_t protocol, u32 node_index);
158 format_function_t format_osi_header;
160 #endif /* included_osi_h */
163 * fd.io coding-style-patch-verification: ON
166 * eval: (c-set-style "gnu")