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 <vppinfra/pcap.h>
49 /* Root of all packet generator cli commands. */
51 VLIB_CLI_COMMAND (vlib_cli_pg_command, static) = {
52 .path = "packet-generator",
53 .short_help = "Packet generator commands",
58 pg_enable_disable (u32 stream_index, int is_enable)
60 pg_main_t *pg = &pg_main;
63 if (stream_index == ~0)
65 /* No stream specified: enable/disable all streams. */
67 pool_foreach (s, pg->streams, ({
68 pg_stream_enable_disable (pg, s, is_enable);
74 /* enable/disable specified stream. */
75 s = pool_elt_at_index (pg->streams, stream_index);
76 pg_stream_enable_disable (pg, s, is_enable);
81 pg_capture (pg_capture_args_t * a)
83 pg_main_t *pg = &pg_main;
86 if (a->is_enabled == 1)
89 if (stat ((char *) a->pcap_file_name, &sb) != -1)
90 return clib_error_return (0, "Cannot create pcap file");
93 pi = pool_elt_at_index (pg->interfaces, a->dev_instance);
94 vec_free (pi->pcap_file_name);
95 clib_memset (&pi->pcap_main, 0, sizeof (pi->pcap_main));
97 if (a->is_enabled == 0)
100 pi->pcap_file_name = a->pcap_file_name;
101 pi->pcap_main.file_name = (char *) pi->pcap_file_name;
102 pi->pcap_main.n_packets_to_capture = a->count;
103 pi->pcap_main.packet_type = PCAP_PACKET_TYPE_ethernet;
108 static clib_error_t *
109 enable_disable_stream (vlib_main_t * vm,
110 unformat_input_t * input, vlib_cli_command_t * cmd)
112 unformat_input_t _line_input, *line_input = &_line_input;
113 pg_main_t *pg = &pg_main;
114 int is_enable = cmd->function_arg != 0;
115 u32 stream_index = ~0;
117 if (!unformat_user (input, unformat_line_input, line_input))
120 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
122 if (unformat (line_input, "%U", unformat_hash_vec_string,
123 pg->stream_index_by_name, &stream_index))
126 return clib_error_create ("unknown input `%U'",
127 format_unformat_error, line_input);
129 unformat_free (line_input);
132 pg_enable_disable (stream_index, is_enable);
138 VLIB_CLI_COMMAND (enable_streams_cli, static) = {
139 .path = "packet-generator enable-stream",
140 .short_help = "Enable packet generator streams",
141 .function = enable_disable_stream,
142 .function_arg = 1, /* is_enable */
147 VLIB_CLI_COMMAND (disable_streams_cli, static) = {
148 .path = "packet-generator disable-stream",
149 .short_help = "Disable packet generator streams",
150 .function = enable_disable_stream,
151 .function_arg = 0, /* is_enable */
156 format_pg_edit_group (u8 * s, va_list * va)
158 pg_edit_group_t *g = va_arg (*va, pg_edit_group_t *);
161 format (s, "hdr-size %d, offset %d, ", g->n_packet_bytes,
162 g->start_byte_offset);
163 if (g->edit_function)
167 function_name = format (0, "%U%c", format_clib_elf_symbol_with_address,
168 g->edit_function, 0);
169 junk_after_name = function_name;
170 while (*junk_after_name && *junk_after_name != ' ')
172 *junk_after_name = 0;
173 s = format (s, "edit-function %s, ", function_name);
174 vec_free (function_name);
181 format_pg_stream (u8 * s, va_list * va)
183 pg_stream_t *t = va_arg (*va, pg_stream_t *);
184 int verbose = va_arg (*va, int);
187 return format (s, "%-16s%=12s%=16s%s",
188 "Name", "Enabled", "Count", "Parameters");
190 s = format (s, "%-16v%=12s%=16Ld",
192 pg_stream_is_enabled (t) ? "Yes" : "No",
193 t->n_packets_generated);
195 int indent = format_get_indent (s);
197 s = format (s, "limit %Ld, ", t->n_packets_limit);
198 s = format (s, "rate %.2e pps, ", t->rate_packets_per_second);
199 s = format (s, "size %d%c%d, ",
201 t->packet_size_edit_type == PG_EDIT_RANDOM ? '+' : '-',
202 t->max_packet_bytes);
203 s = format (s, "buffer-size %d, ", t->buffer_bytes);
204 s = format (s, "worker %d, ", t->worker_index);
210 vec_foreach (g, t->edit_groups)
212 s = format (s, "\n%U%U", format_white_space, indent, format_pg_edit_group, g);
220 static clib_error_t *
221 show_streams (vlib_main_t * vm,
222 unformat_input_t * input, vlib_cli_command_t * cmd)
224 pg_main_t *pg = &pg_main;
228 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
230 if (unformat (input, "verbose"))
236 if (pool_elts (pg->streams) == 0)
238 vlib_cli_output (vm, "no streams currently defined");
242 vlib_cli_output (vm, "%U", format_pg_stream, 0, 0);
244 pool_foreach (s, pg->streams, ({
245 vlib_cli_output (vm, "%U", format_pg_stream, s, verbose);
254 VLIB_CLI_COMMAND (show_streams_cli, static) = {
255 .path = "show packet-generator ",
256 .short_help = "show packet-generator [verbose]",
257 .function = show_streams,
261 static clib_error_t *
262 pg_pcap_read (pg_stream_t * s, char *file_name)
265 return clib_error_return (0, "no pcap support");
269 clib_memset (&pm, 0, sizeof (pm));
270 pm.file_name = file_name;
271 error = pcap_read (&pm);
272 s->replay_packet_templates = pm.packets_read;
273 s->replay_packet_timestamps = pm.timestamps;
274 s->min_packet_bytes = pm.min_packet_bytes;
275 s->max_packet_bytes = pm.max_packet_bytes;
276 s->buffer_bytes = pm.max_packet_bytes;
278 if (s->n_packets_limit == 0)
279 s->n_packets_limit = vec_len (pm.packets_read);
282 #endif /* CLIB_UNIX */
286 unformat_pg_stream_parameter (unformat_input_t * input, va_list * args)
288 pg_stream_t *s = va_arg (*args, pg_stream_t *);
291 if (unformat (input, "limit %f", &x))
292 s->n_packets_limit = x;
294 else if (unformat (input, "rate %f", &x))
295 s->rate_packets_per_second = x;
297 else if (unformat (input, "size %d-%d", &s->min_packet_bytes,
298 &s->max_packet_bytes))
299 s->packet_size_edit_type = PG_EDIT_INCREMENT;
301 else if (unformat (input, "size %d+%d", &s->min_packet_bytes,
302 &s->max_packet_bytes))
303 s->packet_size_edit_type = PG_EDIT_RANDOM;
305 else if (unformat (input, "buffer-size %d", &s->buffer_bytes))
314 static clib_error_t *
315 validate_stream (pg_stream_t * s)
317 if (s->max_packet_bytes < s->min_packet_bytes)
318 return clib_error_create ("max-size < min-size");
320 u32 hdr_size = pg_edit_group_n_bytes (s, 0);
321 if (s->min_packet_bytes < hdr_size)
322 return clib_error_create ("min-size < total header size %d", hdr_size);
323 if (s->buffer_bytes == 0)
324 return clib_error_create ("buffer-size must be positive");
326 if (s->rate_packets_per_second < 0)
327 return clib_error_create ("negative rate");
332 static clib_error_t *
333 new_stream (vlib_main_t * vm,
334 unformat_input_t * input, vlib_cli_command_t * cmd)
336 clib_error_t *error = 0;
339 unformat_input_t sub_input = { 0 };
340 int sub_input_given = 0;
341 vnet_main_t *vnm = vnet_get_main ();
342 pg_main_t *pg = &pg_main;
343 pg_stream_t s = { 0 };
344 char *pcap_file_name;
346 s.sw_if_index[VLIB_RX] = s.sw_if_index[VLIB_TX] = ~0;
348 s.max_packet_bytes = s.min_packet_bytes = 64;
349 s.buffer_bytes = vlib_buffer_get_default_data_size (vm);
352 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
354 if (unformat (input, "name %v", &tmp))
361 else if (unformat (input, "node %U",
362 unformat_vnet_hw_interface, vnm, &hw_if_index))
364 vnet_hw_interface_t *hi = vnet_get_hw_interface (vnm, hw_if_index);
366 s.node_index = hi->output_node_index;
367 s.sw_if_index[VLIB_TX] = hi->sw_if_index;
370 else if (unformat (input, "source pg%u", &s.if_id))
373 else if (unformat (input, "node %U",
374 unformat_vlib_node, vm, &s.node_index))
377 else if (unformat (input, "worker %u", &s.worker_index))
380 else if (unformat (input, "interface %U",
381 unformat_vnet_sw_interface, vnm,
382 &s.sw_if_index[VLIB_RX]))
384 else if (unformat (input, "tx-interface %U",
385 unformat_vnet_sw_interface, vnm,
386 &s.sw_if_index[VLIB_TX]))
389 else if (unformat (input, "pcap %s", &pcap_file_name))
392 else if (!sub_input_given
393 && unformat (input, "data %U", unformat_input, &sub_input))
396 else if (unformat_user (input, unformat_pg_stream_parameter, &s))
401 error = clib_error_create ("unknown input `%U'",
402 format_unformat_error, input);
407 if (!sub_input_given && !pcap_file_name)
409 error = clib_error_create ("no packet data given");
413 if (s.node_index == ~0)
415 if (pcap_file_name != 0)
418 vlib_get_node_by_name (vm, (u8 *) "ethernet-input");
419 s.node_index = n->index;
423 error = clib_error_create ("output interface or node not given");
431 if (s.node_index < vec_len (pg->nodes))
432 n = pg->nodes + s.node_index;
436 if (s.worker_index >= vlib_num_workers ())
439 if (pcap_file_name != 0)
441 error = pg_pcap_read (&s, pcap_file_name);
444 vec_free (pcap_file_name);
447 else if (n && n->unformat_edit
448 && unformat_user (&sub_input, n->unformat_edit, &s))
451 else if (!unformat_user (&sub_input, unformat_pg_payload, &s))
453 error = clib_error_create
454 ("failed to parse packet data from `%U'",
455 format_unformat_error, &sub_input);
460 error = validate_stream (&s);
464 pg_stream_add (pg, &s);
469 unformat_free (&sub_input);
474 VLIB_CLI_COMMAND (new_stream_cli, static) = {
475 .path = "packet-generator new",
476 .function = new_stream,
477 .short_help = "Create packet generator stream",
479 "Create packet generator stream\n"
483 "name STRING sets stream name\n"
484 "interface STRING interface for stream output \n"
485 "node NODE-NAME node for stream output\n"
486 "data STRING specifies packet data\n"
487 "pcap FILENAME read packet data from pcap file\n",
491 static clib_error_t *
492 del_stream (vlib_main_t * vm,
493 unformat_input_t * input, vlib_cli_command_t * cmd)
495 pg_main_t *pg = &pg_main;
498 if (!unformat (input, "%U",
499 &unformat_hash_vec_string, pg->stream_index_by_name, &i))
500 return clib_error_create ("expected stream name `%U'",
501 format_unformat_error, input);
503 pg_stream_del (pg, i);
508 VLIB_CLI_COMMAND (del_stream_cli, static) = {
509 .path = "packet-generator delete",
510 .function = del_stream,
511 .short_help = "Delete stream with given name",
515 static clib_error_t *
516 change_stream_parameters (vlib_main_t * vm,
517 unformat_input_t * input, vlib_cli_command_t * cmd)
519 pg_main_t *pg = &pg_main;
520 pg_stream_t *s, s_new;
521 u32 stream_index = ~0;
524 if (unformat (input, "%U", unformat_hash_vec_string,
525 pg->stream_index_by_name, &stream_index))
528 return clib_error_create ("expecting stream name; got `%U'",
529 format_unformat_error, input);
531 s = pool_elt_at_index (pg->streams, stream_index);
534 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
536 if (unformat_user (input, unformat_pg_stream_parameter, &s_new))
540 return clib_error_create ("unknown input `%U'",
541 format_unformat_error, input);
544 error = validate_stream (&s_new);
548 pg_stream_change (pg, s);
555 VLIB_CLI_COMMAND (change_stream_parameters_cli, static) = {
556 .path = "packet-generator configure",
557 .short_help = "Change packet generator stream parameters",
558 .function = change_stream_parameters,
562 static clib_error_t *
563 pg_capture_cmd_fn (vlib_main_t * vm,
564 unformat_input_t * input, vlib_cli_command_t * cmd)
566 clib_error_t *error = 0;
567 vnet_main_t *vnm = vnet_get_main ();
568 unformat_input_t _line_input, *line_input = &_line_input;
569 vnet_hw_interface_t *hi = 0;
570 u8 *pcap_file_name = 0;
575 if (!unformat_user (input, unformat_line_input, line_input))
578 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
580 if (unformat (line_input, "%U",
581 unformat_vnet_hw_interface, vnm, &hw_if_index))
583 hi = vnet_get_hw_interface (vnm, hw_if_index);
586 else if (unformat (line_input, "pcap %s", &pcap_file_name))
588 else if (unformat (line_input, "count %u", &count))
590 else if (unformat (line_input, "disable"))
595 error = clib_error_create ("unknown input `%U'",
596 format_unformat_error, line_input);
603 error = clib_error_return (0, "Please specify interface name");
607 if (hi->dev_class_index != pg_dev_class.index)
610 clib_error_return (0, "Please specify packet-generator interface");
614 if (!pcap_file_name && is_disable == 0)
616 error = clib_error_return (0, "Please specify pcap file name");
621 pg_capture_args_t _a, *a = &_a;
623 a->hw_if_index = hw_if_index;
624 a->dev_instance = hi->dev_instance;
625 a->is_enabled = !is_disable;
626 a->pcap_file_name = pcap_file_name;
629 error = pg_capture (a);
632 unformat_free (line_input);
638 VLIB_CLI_COMMAND (pg_capture_cmd, static) = {
639 .path = "packet-generator capture",
640 .short_help = "packet-generator capture <interface name> pcap <filename> [count <n>]",
641 .function = pg_capture_cmd_fn,
645 static clib_error_t *
646 create_pg_if_cmd_fn (vlib_main_t * vm,
647 unformat_input_t * input, vlib_cli_command_t * cmd)
649 pg_main_t *pg = &pg_main;
650 unformat_input_t _line_input, *line_input = &_line_input;
652 clib_error_t *error = NULL;
654 if (!unformat_user (input, unformat_line_input, line_input))
657 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
659 if (unformat (line_input, "interface pg%u", &if_id))
664 error = clib_error_create ("unknown input `%U'",
665 format_unformat_error, line_input);
670 pg_interface_add_or_get (pg, if_id);
673 unformat_free (line_input);
679 VLIB_CLI_COMMAND (create_pg_if_cmd, static) = {
680 .path = "create packet-generator",
681 .short_help = "create packet-generator interface <interface name>",
682 .function = create_pg_if_cmd_fn,
686 /* Dummy init function so that we can be linked in. */
687 static clib_error_t *
688 pg_cli_init (vlib_main_t * vm)
693 VLIB_INIT_FUNCTION (pg_cli_init);
696 * fd.io coding-style-patch-verification: ON
699 * eval: (c-set-style "gnu")