/* * 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); 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: */