8629336fa5
Type: refactor This patch moves osi into a plugin, and also modifies the init functions of llc and snap to preserve init order dependency (llc_init --> osi_init --> snap_init). While the initial intent was to move osi/llc/snap together into a single plugin, there exists a dependency on llc in vnet/ethernet, which would require further refactoring and testing work. Change-Id: Ic0eff030ee29c8d316c0e0fe13931451aa193527 Signed-off-by: Hadi Rayan Al-Sandid <halsandi@cisco.com>
157 lines
4.2 KiB
C
157 lines
4.2 KiB
C
/*
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* Copyright (c) 2015 Cisco and/or its affiliates.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/*
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* osi.h: OSI definitions
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*
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* Copyright (c) 2008 Eliot Dresselhaus
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef included_osi_h
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#define included_osi_h
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#include <vnet/vnet.h>
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#define foreach_osi_protocol \
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_ (null, 0x0) \
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_ (x_29, 0x01) \
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_ (x_633, 0x03) \
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_ (q_931, 0x08) \
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_ (q_933, 0x08) \
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_ (q_2931, 0x09) \
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_ (q_2119, 0x0c) \
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_ (snap, 0x80) \
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_ (clnp, 0x81) \
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_ (esis, 0x82) \
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_ (isis, 0x83) \
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_ (idrp, 0x85) \
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_ (x25_esis, 0x8a) \
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_ (iso10030, 0x8c) \
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_ (iso11577, 0x8d) \
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_ (ip6, 0x8e) \
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_ (compressed, 0xb0) \
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_ (sndcf, 0xc1) \
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_ (ip4, 0xcc) \
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_ (ppp, 0xcf)
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typedef enum
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{
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#define _(f,n) OSI_PROTOCOL_##f = n,
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foreach_osi_protocol
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#undef _
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} osi_protocol_t;
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typedef struct
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{
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u8 protocol;
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u8 payload[0];
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} osi_header_t;
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typedef struct
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{
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/* Name (a c string). */
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char *name;
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/* OSI protocol (SAP type). */
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osi_protocol_t protocol;
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/* Node which handles this type. */
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u32 node_index;
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/* Next index for this type. */
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u32 next_index;
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} osi_protocol_info_t;
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#define foreach_osi_error \
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_ (NONE, "no error") \
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_ (UNKNOWN_PROTOCOL, "unknown osi protocol")
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typedef enum
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{
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#define _(f,s) OSI_ERROR_##f,
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foreach_osi_error
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#undef _
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OSI_N_ERROR,
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} osi_error_t;
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typedef struct
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{
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vlib_main_t *vlib_main;
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osi_protocol_info_t *protocol_infos;
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/* Hash tables mapping name/protocol to protocol info index. */
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uword *protocol_info_by_name, *protocol_info_by_protocol;
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/* osi-input next index indexed by protocol. */
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u8 input_next_by_protocol[256];
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} osi_main_t;
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always_inline osi_protocol_info_t *
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osi_get_protocol_info (osi_main_t * m, osi_protocol_t protocol)
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{
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uword *p = hash_get (m->protocol_info_by_protocol, protocol);
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return p ? vec_elt_at_index (m->protocol_infos, p[0]) : 0;
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}
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extern osi_main_t osi_main;
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/* Register given node index to take input for given osi type. */
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void osi_register_input_protocol (osi_protocol_t protocol, u32 node_index);
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format_function_t format_osi_protocol;
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format_function_t format_osi_header;
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format_function_t format_osi_header_with_length;
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/* Parse osi protocol as 0xXXXX or protocol name. */
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unformat_function_t unformat_osi_protocol;
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/* Parse osi header. */
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unformat_function_t unformat_osi_header;
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unformat_function_t unformat_pg_osi_header;
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void osi_register_input_protocol (osi_protocol_t protocol, u32 node_index);
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format_function_t format_osi_header;
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#endif /* included_osi_h */
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/*
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* fd.io coding-style-patch-verification: ON
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*
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* Local Variables:
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* eval: (c-set-style "gnu")
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* End:
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*/
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