2 * Copyright (c) 2015 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 * pg_output.c: packet generator output
18 * Copyright (c) 2008 Eliot Dresselhaus
20 * Permission is hereby granted, free of charge, to any person obtaining
21 * a copy of this software and associated documentation files (the
22 * "Software"), to deal in the Software without restriction, including
23 * without limitation the rights to use, copy, modify, merge, publish,
24 * distribute, sublicense, and/or sell copies of the Software, and to
25 * permit persons to whom the Software is furnished to do so, subject to
26 * the following conditions:
28 * The above copyright notice and this permission notice shall be
29 * included in all copies or substantial portions of the Software.
31 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
32 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
33 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
34 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
35 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
36 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
37 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 #include <vppinfra/string.h>
41 #include <vlib/vlib.h>
42 #include <vnet/vnet.h>
43 #include <vnet/pg/pg.h>
44 #include <vnet/ethernet/ethernet.h>
47 pg_output (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
49 pg_main_t *pg = &pg_main;
50 u32 *buffers = vlib_frame_args (frame);
51 uword n_buffers = frame->n_vectors;
52 uword n_left = n_buffers;
53 vnet_interface_output_runtime_t *rd = (void *) node->runtime_data;
54 pg_interface_t *pif = pool_elt_at_index (pg->interfaces, rd->dev_instance);
56 if (PREDICT_FALSE (pif->lockp != 0))
57 while (__sync_lock_test_and_set (pif->lockp, 1))
64 vlib_buffer_t *b = vlib_get_buffer (vm, bi0);
67 if (b->flags & VLIB_BUFFER_IS_TRACED)
69 pg_output_trace_t *t = vlib_add_trace (vm, node, b, sizeof (*t));
70 t->buffer_index = bi0;
71 clib_memcpy (&t->buffer, b, sizeof (b[0]) - sizeof (b->pre_data));
72 clib_memcpy (t->buffer.pre_data, b->data + b->current_data,
73 sizeof (t->buffer.pre_data));
76 if (pif->pcap_file_name != 0)
77 pcap_add_buffer (&pif->pcap_main, vm, bi0, ETHERNET_MAX_PACKET_BYTES);
79 if (pif->pcap_file_name != 0)
80 pcap_write (&pif->pcap_main);
83 vlib_buffer_free (vm, vlib_frame_args (frame), n_buffers);
84 if (PREDICT_FALSE (pif->lockp != 0))
90 * fd.io coding-style-patch-verification: ON
93 * eval: (c-set-style "gnu")