/* * 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. */ /* * hdlc_pg.c: packet generator hdlc interface * * 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. */ #include <vlib/vlib.h> #include <vnet/pg/pg.h> #include <vnet/hdlc/hdlc.h> typedef struct { pg_edit_t address; pg_edit_t control; pg_edit_t protocol; } pg_hdlc_header_t; static inline void pg_hdlc_header_init (pg_hdlc_header_t * e) { pg_edit_init (&e->address, hdlc_header_t, address); pg_edit_init (&e->control, hdlc_header_t, control); pg_edit_init (&e->protocol, hdlc_header_t, protocol); } uword unformat_pg_hdlc_header (unformat_input_t * input, va_list * args) { pg_stream_t * s = va_arg (*args, pg_stream_t *); pg_hdlc_header_t * h; u32 group_index, error; h = pg_create_edit_group (s, sizeof (h[0]), sizeof (hdlc_header_t), &group_index); pg_hdlc_header_init (h); pg_edit_set_fixed (&h->address, 0x0f); pg_edit_set_fixed (&h->control, 0x00); error = 1; if (! unformat (input, "%U", unformat_pg_edit, unformat_hdlc_protocol_net_byte_order, &h->protocol)) goto done; { hdlc_main_t * pm = &hdlc_main; hdlc_protocol_info_t * pi = 0; pg_node_t * pg_node = 0; if (h->protocol.type == PG_EDIT_FIXED) { u16 t = *(u16 *) h->protocol.values[PG_EDIT_LO]; pi = hdlc_get_protocol_info (pm, clib_net_to_host_u16 (t)); if (pi && pi->node_index != ~0) pg_node = pg_get_node (pi->node_index); } if (pg_node && pg_node->unformat_edit && unformat_user (input, pg_node->unformat_edit, s)) ; else if (! unformat_user (input, unformat_pg_payload, s)) goto done; } error = 0; done: if (error) pg_free_edit_group (s); return error == 0; }