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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.
*/
/*
* osi.h: OSI definitions
*
* 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_osi_h
#define included_osi_h
#include <vnet/vnet.h>
#include <vnet/pg/pg.h>
#define foreach_osi_protocol \
_ (null, 0x0) \
_ (x_29, 0x01) \
_ (x_633, 0x03) \
_ (q_931, 0x08) \
_ (q_933, 0x08) \
_ (q_2931, 0x09) \
_ (q_2119, 0x0c) \
_ (snap, 0x80) \
_ (clnp, 0x81) \
_ (esis, 0x82) \
_ (isis, 0x83) \
_ (idrp, 0x85) \
_ (x25_esis, 0x8a) \
_ (iso10030, 0x8c) \
_ (iso11577, 0x8d) \
_ (ip6, 0x8e) \
_ (compressed, 0xb0) \
_ (sndcf, 0xc1) \
_ (ip4, 0xcc) \
_ (ppp, 0xcf)
typedef enum
{
#define _(f,n) OSI_PROTOCOL_##f = n,
foreach_osi_protocol
#undef _
} osi_protocol_t;
typedef struct
{
u8 protocol;
u8 payload[0];
} osi_header_t;
typedef struct
{
/* Name (a c string). */
char *name;
/* OSI protocol (SAP type). */
osi_protocol_t protocol;
/* Node which handles this type. */
u32 node_index;
/* Next index for this type. */
u32 next_index;
} osi_protocol_info_t;
#define foreach_osi_error \
_ (NONE, "no error") \
_ (UNKNOWN_PROTOCOL, "unknown osi protocol")
typedef enum
{
#define _(f,s) OSI_ERROR_##f,
foreach_osi_error
#undef _
OSI_N_ERROR,
} osi_error_t;
typedef struct
{
vlib_main_t *vlib_main;
osi_protocol_info_t *protocol_infos;
/* Hash tables mapping name/protocol to protocol info index. */
uword *protocol_info_by_name, *protocol_info_by_protocol;
/* osi-input next index indexed by protocol. */
u8 input_next_by_protocol[256];
} osi_main_t;
always_inline osi_protocol_info_t *
osi_get_protocol_info (osi_main_t * m, osi_protocol_t protocol)
{
uword *p = hash_get (m->protocol_info_by_protocol, protocol);
return p ? vec_elt_at_index (m->protocol_infos, p[0]) : 0;
}
extern osi_main_t osi_main;
/* Register given node index to take input for given osi type. */
void osi_register_input_protocol (osi_protocol_t protocol, u32 node_index);
void osi_set_adjacency (vnet_rewrite_header_t * rw,
uword max_data_bytes, osi_protocol_t protocol);
format_function_t format_osi_protocol;
format_function_t format_osi_header;
format_function_t format_osi_header_with_length;
/* Parse osi protocol as 0xXXXX or protocol name. */
unformat_function_t unformat_osi_protocol;
/* Parse osi header. */
unformat_function_t unformat_osi_header;
unformat_function_t unformat_pg_osi_header;
always_inline void
osi_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_osi_header_with_length;
n->unformat_buffer = unformat_osi_header;
pn->unformat_edit = unformat_pg_osi_header;
}
void osi_register_input_protocol (osi_protocol_t protocol, u32 node_index);
format_function_t format_osi_header;
#endif /* included_osi_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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