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_cli.c: packet generator cli
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.
42 #include <vnet/vnet.h>
43 #include <vnet/pg/pg.h>
46 #include <vnet/unix/pcap.h>
49 /* Root of all packet generator cli commands. */
50 VLIB_CLI_COMMAND (vlib_cli_pg_command, static) = {
51 .path = "packet-generator",
52 .short_help = "Packet generator commands",
56 enable_disable_stream (vlib_main_t * vm,
57 unformat_input_t * input,
58 vlib_cli_command_t * cmd)
60 pg_main_t * pg = &pg_main;
62 int is_enable = cmd->function_arg != 0;
63 u32 stream_index = ~0;
65 if (unformat (input, "%U", unformat_eof))
67 else if (unformat (input, "%U", unformat_hash_vec_string,
68 pg->stream_index_by_name, &stream_index))
71 return clib_error_create ("unknown input `%U'",
72 format_unformat_error, input);
74 /* No stream specified: enable/disable all streams. */
75 if (stream_index == ~0)
76 pool_foreach (s, pg->streams, ({
77 pg_stream_enable_disable (pg, s, is_enable);
81 /* enable/disable specified stream. */
82 s = pool_elt_at_index (pg->streams, stream_index);
83 pg_stream_enable_disable (pg, s, is_enable);
89 VLIB_CLI_COMMAND (enable_streams_cli, static) = {
90 .path = "packet-generator enable-stream",
91 .short_help = "Enable packet generator streams",
92 .function = enable_disable_stream,
93 .function_arg = 1, /* is_enable */
96 VLIB_CLI_COMMAND (disable_streams_cli, static) = {
97 .path = "packet-generator disable-stream",
98 .short_help = "Disable packet generator streams",
99 .function = enable_disable_stream,
100 .function_arg = 0, /* is_enable */
103 static u8 * format_pg_stream (u8 * s, va_list * va)
105 pg_stream_t * t = va_arg (*va, pg_stream_t *);
109 return format (s, "%=16s%=12s%=16s%s",
110 "Name", "Enabled", "Count", "Parameters");
112 s = format (s, "%-16v%=12s%16Ld",
114 pg_stream_is_enabled (t) ? "Yes" : "No",
115 t->n_packets_generated);
119 v = format (v, "limit %Ld, ", t->n_packets_limit);
121 v = format (v, "rate %.2e pps, ", t->rate_packets_per_second);
123 v = format (v, "size %d%c%d, ",
125 t->packet_size_edit_type == PG_EDIT_RANDOM ? '+' : '-',
126 t->max_packet_bytes);
128 v = format (v, "buffer-size %d, ", t->buffer_bytes);
132 s = format (s, " %v", v);
139 static clib_error_t *
140 show_streams (vlib_main_t * vm,
141 unformat_input_t * input,
142 vlib_cli_command_t * cmd)
144 pg_main_t * pg = &pg_main;
147 if (pool_elts (pg->streams) == 0)
149 vlib_cli_output (vm, "no streams currently defined");
153 vlib_cli_output (vm, "%U", format_pg_stream, 0);
154 pool_foreach (s, pg->streams, ({
155 vlib_cli_output (vm, "%U", format_pg_stream, s);
162 VLIB_CLI_COMMAND (show_streams_cli, static) = {
163 .path = "show packet-generator",
164 .short_help = "Show packet generator streams",
165 .function = show_streams,
168 static clib_error_t *
169 pg_pcap_read (pg_stream_t * s, char * file_name)
172 return clib_error_return (0, "no pcap support");
175 clib_error_t * error;
176 memset (&pm, 0, sizeof (pm));
177 pm.file_name = file_name;
178 error = pcap_read (&pm);
179 s->replay_packet_templates = pm.packets_read;
180 s->min_packet_bytes = pm.min_packet_bytes;
181 s->max_packet_bytes = pm.max_packet_bytes;
182 s->buffer_bytes = pm.max_packet_bytes;
183 /* For PCAP buffers we never re-use buffers. */
184 s->flags |= PG_STREAM_FLAGS_DISABLE_BUFFER_RECYCLE;
186 if (s->n_packets_limit == 0)
187 s->n_packets_limit = vec_len (pm.packets_read);
190 #endif /* CLIB_UNIX */
194 unformat_pg_stream_parameter (unformat_input_t * input, va_list * args)
196 pg_stream_t * s = va_arg (*args, pg_stream_t *);
199 if (unformat (input, "limit %f", &x))
200 s->n_packets_limit = x;
202 else if (unformat (input, "rate %f", &x))
203 s->rate_packets_per_second = x;
205 else if (unformat (input, "size %d-%d", &s->min_packet_bytes,
206 &s->max_packet_bytes))
207 s->packet_size_edit_type = PG_EDIT_INCREMENT;
209 else if (unformat (input, "size %d+%d", &s->min_packet_bytes,
210 &s->max_packet_bytes))
211 s->packet_size_edit_type = PG_EDIT_RANDOM;
213 else if (unformat (input, "buffer-size %d", &s->buffer_bytes))
222 static clib_error_t *
223 validate_stream (pg_stream_t * s)
225 if (s->max_packet_bytes < s->min_packet_bytes)
226 return clib_error_create ("max-size < min-size");
228 if (s->buffer_bytes >= 4096 || s->buffer_bytes == 0)
229 return clib_error_create ("buffer-size must be positive and < 4096, given %d",
232 if (s->rate_packets_per_second < 0)
233 return clib_error_create ("negative rate");
238 static clib_error_t *
239 new_stream (vlib_main_t * vm,
240 unformat_input_t * input,
241 vlib_cli_command_t * cmd)
243 clib_error_t * error = 0;
246 unformat_input_t sub_input = {0};
247 int sub_input_given = 0;
248 vnet_main_t * vnm = vnet_get_main();
249 pg_main_t * pg = &pg_main;
251 char * pcap_file_name;
253 s.sw_if_index[VLIB_RX] = s.sw_if_index[VLIB_TX] = ~0;
255 s.max_packet_bytes = s.min_packet_bytes = 64;
256 s.buffer_bytes = VLIB_BUFFER_DEFAULT_FREE_LIST_BYTES;
259 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
261 if (unformat (input, "name %v", &tmp))
268 else if (unformat (input, "node %U",
269 unformat_vnet_hw_interface, vnm, &hw_if_index))
271 vnet_hw_interface_t * hi = vnet_get_hw_interface (vnm, hw_if_index);
273 s.node_index = hi->output_node_index;
274 s.sw_if_index[VLIB_TX] = hi->sw_if_index;
277 else if (unformat (input, "source pg%u",&s.if_id))
280 else if (unformat (input, "node %U",
281 unformat_vlib_node, vm, &s.node_index))
284 else if (unformat (input, "interface %U",
285 unformat_vnet_sw_interface, vnm, &s.sw_if_index[VLIB_RX]))
288 else if (unformat (input, "pcap %s", &pcap_file_name))
291 else if (! sub_input_given
292 && unformat (input, "data %U", unformat_input, &sub_input))
295 else if (unformat_user (input, unformat_pg_stream_parameter, &s))
298 else if (unformat (input, "no-recycle"))
299 s.flags |= PG_STREAM_FLAGS_DISABLE_BUFFER_RECYCLE;
303 error = clib_error_create ("unknown input `%U'",
304 format_unformat_error, input);
309 error = validate_stream (&s);
313 if (! sub_input_given && ! pcap_file_name)
315 error = clib_error_create ("no packet data given");
319 if (s.node_index == ~0)
321 if (pcap_file_name != 0)
323 vlib_node_t * n = vlib_get_node_by_name(vm, (u8 *) "ethernet-input");
324 s.node_index = n->index;
328 error = clib_error_create ("output interface or node not given");
336 if (s.node_index < vec_len (pg->nodes))
337 n = pg->nodes + s.node_index;
341 if (pcap_file_name != 0)
343 error = pg_pcap_read (&s, pcap_file_name);
346 vec_free (pcap_file_name);
349 else if (n && n->unformat_edit
350 && unformat_user (&sub_input, n->unformat_edit, &s))
353 else if (! unformat_user (&sub_input, unformat_pg_payload, &s))
355 error = clib_error_create
356 ("failed to parse packet data from `%U'",
357 format_unformat_error, &sub_input);
362 pg_stream_add (pg, &s);
367 unformat_free (&sub_input);
371 VLIB_CLI_COMMAND (new_stream_cli, static) = {
372 .path = "packet-generator new",
373 .function = new_stream,
374 .short_help = "Create packet generator stream",
376 "Create packet generator stream\n"
380 "name STRING sets stream name\n"
381 "interface STRING interface for stream output \n"
382 "node NODE-NAME node for stream output\n"
383 "data STRING specifies packet data\n"
384 "pcap FILENAME read packet data from pcap file\n",
387 static clib_error_t *
388 del_stream (vlib_main_t * vm,
389 unformat_input_t * input,
390 vlib_cli_command_t * cmd)
392 pg_main_t * pg = &pg_main;
395 if (! unformat (input, "%U",
396 &unformat_hash_vec_string, pg->stream_index_by_name, &i))
397 return clib_error_create ("expected stream name `%U'",
398 format_unformat_error, input);
400 pg_stream_del (pg, i);
404 VLIB_CLI_COMMAND (del_stream_cli, static) = {
405 .path = "packet-generator delete",
406 .function = del_stream,
407 .short_help = "Delete stream with given name",
410 static clib_error_t *
411 change_stream_parameters (vlib_main_t * vm,
412 unformat_input_t * input,
413 vlib_cli_command_t * cmd)
415 pg_main_t * pg = &pg_main;
416 pg_stream_t * s, s_new;
417 u32 stream_index = ~0;
418 clib_error_t * error;
420 if (unformat (input, "%U", unformat_hash_vec_string,
421 pg->stream_index_by_name, &stream_index))
424 return clib_error_create ("expecting stream name; got `%U'",
425 format_unformat_error, input);
427 s = pool_elt_at_index (pg->streams, stream_index);
430 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
432 if (unformat_user (input, unformat_pg_stream_parameter, &s_new))
436 return clib_error_create ("unknown input `%U'",
437 format_unformat_error, input);
440 error = validate_stream (&s_new);
447 VLIB_CLI_COMMAND (change_stream_parameters_cli, static) = {
448 .path = "packet-generator configure",
449 .short_help = "Change packet generator stream parameters",
450 .function = change_stream_parameters,
453 static clib_error_t *
454 pg_capture_cmd_fn (vlib_main_t * vm,
455 unformat_input_t * input,
456 vlib_cli_command_t * cmd)
458 pg_main_t * pg = &pg_main;
459 clib_error_t * error = 0;
460 vnet_main_t * vnm = vnet_get_main();
461 unformat_input_t _line_input, * line_input = &_line_input;
462 vnet_hw_interface_t * hi = 0;
464 u8 * pcap_file_name = 0;
469 if (! unformat_user (input, unformat_line_input, line_input))
472 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
474 if (unformat (line_input, "%U",
475 unformat_vnet_hw_interface, vnm, &hw_if_index))
477 hi = vnet_get_hw_interface (vnm, hw_if_index);
480 else if (unformat (line_input, "pcap %s", &pcap_file_name))
482 else if (unformat (line_input, "count %u", &count))
484 else if (unformat (line_input, "disable"))
489 error = clib_error_create ("unknown input `%U'",
490 format_unformat_error, input);
496 return clib_error_return (0, "Please specify interface name");
498 if (hi->dev_class_index != pg_dev_class.index)
499 return clib_error_return (0, "Please specify packet-generator interface");
501 if (!pcap_file_name && is_disable == 0)
502 return clib_error_return (0, "Please specify pcap file name");
507 if (stat ((char *) pcap_file_name, &sb) != -1)
508 return clib_error_return (0, "Cannot create pcap file");
511 unformat_free (line_input);
513 pi = pool_elt_at_index (pg->interfaces, hi->dev_instance);
514 vec_free (pi->pcap_file_name);
515 memset (&pi->pcap_main, 0, sizeof (pi->pcap_main));
520 pi->pcap_file_name = pcap_file_name;
521 pi->pcap_main.file_name = (char *) pi->pcap_file_name;
522 pi->pcap_main.n_packets_to_capture = count;
523 pi->pcap_main.packet_type = PCAP_PACKET_TYPE_ethernet;
528 VLIB_CLI_COMMAND (pg_capture_cmd, static) = {
529 .path = "packet-generator capture",
530 .short_help = "packet-generator capture <interface name> pcap <filename> [count <n>]",
531 .function = pg_capture_cmd_fn,
534 static clib_error_t *
535 create_pg_if_cmd_fn (vlib_main_t * vm,
536 unformat_input_t * input,
537 vlib_cli_command_t * cmd)
539 pg_main_t * pg = &pg_main;
540 unformat_input_t _line_input, * line_input = &_line_input;
543 if (! unformat_user (input, unformat_line_input, line_input))
546 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
548 if (unformat (line_input, "interface pg%u", &if_id))
552 return clib_error_create ("unknown input `%U'",
553 format_unformat_error, input);
556 unformat_free (line_input);
558 pg_interface_add_or_get (pg, if_id);
562 VLIB_CLI_COMMAND (create_pg_if_cmd, static) = {
563 .path = "create packet-generator",
564 .short_help = "create packet-generator interface <interface name>",
565 .function = create_pg_if_cmd_fn,
568 /* Dummy init function so that we can be linked in. */
569 static clib_error_t * pg_cli_init (vlib_main_t * vm)
572 VLIB_INIT_FUNCTION (pg_cli_init);