/* * 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. */ /* * srp/pg.c: packet generator srp 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/srp/srp.h> #include <vnet/ethernet/ethernet.h> typedef struct { pg_edit_t ttl; pg_edit_t is_inner_ring; pg_edit_t mode; pg_edit_t priority; pg_edit_t parity; pg_edit_t type; pg_edit_t src_address; pg_edit_t dst_address; } pg_srp_header_t; static inline void pg_srp_header_init (pg_srp_header_t * e) { pg_edit_init (&e->ttl, srp_and_ethernet_header_t, srp.ttl); pg_edit_init_bitfield (&e->is_inner_ring, srp_and_ethernet_header_t, srp.as_u16, 7, 1); pg_edit_init_bitfield (&e->mode, srp_and_ethernet_header_t, srp.as_u16, 4, 3); pg_edit_init_bitfield (&e->priority, srp_and_ethernet_header_t, srp.as_u16, 1, 3); pg_edit_init_bitfield (&e->parity, srp_and_ethernet_header_t, srp.as_u16, 0, 1); pg_edit_init (&e->type, srp_and_ethernet_header_t, ethernet.type); pg_edit_init (&e->src_address, srp_and_ethernet_header_t, ethernet.src_address); pg_edit_init (&e->dst_address, srp_and_ethernet_header_t, ethernet.dst_address); } uword unformat_pg_srp_header (unformat_input_t * input, va_list * args) { pg_stream_t * s = va_arg (*args, pg_stream_t *); pg_srp_header_t * e; u32 error, group_index; e = pg_create_edit_group (s, sizeof (e[0]), sizeof (srp_header_t), &group_index); pg_srp_header_init (e); error = 1; if (! unformat (input, "%U: %U -> %U", unformat_pg_edit, unformat_ethernet_type_net_byte_order, &e->type, unformat_pg_edit, unformat_ethernet_address, &e->src_address, unformat_pg_edit, unformat_ethernet_address, &e->dst_address)) goto done; { srp_header_t h; h.as_u16 = 0; h.mode = SRP_MODE_data; h.ttl = 255; h.parity = count_set_bits (h.as_u16) ^ 1; pg_edit_set_fixed (&e->mode, h.mode); pg_edit_set_fixed (&e->ttl, h.ttl); pg_edit_set_fixed (&e->is_inner_ring, h.is_inner_ring); pg_edit_set_fixed (&e->priority, h.priority); pg_edit_set_fixed (&e->parity, h.parity); } error = 0; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "mode %U", unformat_pg_edit, unformat_pg_number, &e->mode)) ; else if (unformat (input, "ttl %U", unformat_pg_edit, unformat_pg_number, &e->ttl)) ; else if (unformat (input, "priority %U", unformat_pg_edit, unformat_pg_number, &e->priority)) ; else break; } { ethernet_main_t * em = ðernet_main; ethernet_type_info_t * ti = 0; pg_node_t * pg_node = 0; if (e->type.type == PG_EDIT_FIXED) { u16 t = *(u16 *) e->type.values[PG_EDIT_LO]; ti = ethernet_get_type_info (em, clib_net_to_host_u16 (t)); if (ti && ti->node_index != ~0) pg_node = pg_get_node (ti->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; } done: if (error) pg_free_edit_group (s); return error == 0; }