DPDK logo

Elixir Cross Referencer

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2015-2016 Intel Corporation
 */

#include <arpa/inet.h>

#include <rte_eal_memconfig.h>
#include <rte_eth_ring.h>
#include <rte_memzone.h>

#include "args.h"
#include "common.h"
#include "init.h"

static sig_atomic_t on = 1;

static enum cmd_type cmd = STOP;

static struct port_map port_map[RTE_MAX_ETHPORTS];

static struct port ports_fwd_array[RTE_MAX_ETHPORTS];

/* It is used to convert port name from string type to enum */
struct porttype_map {
	const char     *port_name;
	enum port_type port_type;
};

struct porttype_map portmap[] = {
	{ .port_name = "phy",   .port_type = PHY, },
	{ .port_name = "ring",  .port_type = RING, },
	{ .port_name = "vhost", .port_type = VHOST, },
	{ .port_name = NULL,    .port_type = UNDEF, },
};

/* Return a type of port as a enum member of porttype_map structure. */
static enum port_type get_port_type(char *portname)
{
	for (int i = 0; portmap[i].port_name != NULL; i++) {
		const char *port_name = portmap[i].port_name;
		if (strncmp(portname, port_name, strlen(port_name)) == 0)
			return portmap[i].port_type;
	}
	return UNDEF;
}

static void
forward(void)
{
	uint16_t nb_rx;
	uint16_t nb_tx;
	uint16_t buf;
	int in_port;
	int out_port;
	int i;

	/* Go through every possible port numbers */
	for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
		struct rte_mbuf *bufs[MAX_PKT_BURST];

		if (ports_fwd_array[i].in_port_id == PORT_RESET)
			continue;

		if (ports_fwd_array[i].out_port_id == PORT_RESET)
			continue;

		/* if status active, i count is in port */
		in_port = i;
		out_port = ports_fwd_array[i].out_port_id;

		/* Get burst of RX packets, from first port of pair. */
		/* first port rx, second port tx */
		nb_rx = ports_fwd_array[in_port].rx_func(in_port, 0, bufs,
			MAX_PKT_BURST);
		if (unlikely(nb_rx == 0))
			continue;

		port_map[in_port].stats->rx += nb_rx;

		/* Send burst of TX packets, to second port of pair. */
		nb_tx = ports_fwd_array[out_port].tx_func(out_port, 0, bufs,
			nb_rx);

		port_map[out_port].stats->tx += nb_tx;

		/* Free any unsent packets. */
		if (unlikely(nb_tx < nb_rx)) {
			port_map[out_port].stats->tx_drop += nb_rx - nb_tx;
			for (buf = nb_tx; buf < nb_rx; buf++)
				rte_pktmbuf_free(bufs[buf]);
		}
	}
}

/* main processing loop */
static void
nfv_loop(void)
{
	unsigned int lcore_id = rte_lcore_id();

	RTE_LOG(INFO, APP, "entering main loop on lcore %u\n", lcore_id);

	while (1) {
		if (unlikely(cmd == STOP)) {
			sleep(1);
			continue;
		} else if (cmd == FORWARD) {
			forward();
		}
	}
}

/* leading to nfv processing loop */
static int
main_loop(void *dummy __rte_unused)
{
	nfv_loop();
	return 0;
}

static void
port_map_init_one(unsigned int i)
{
	port_map[i].id = PORT_RESET;
	port_map[i].port_type = UNDEF;
	port_map[i].stats = &port_map[i].default_stats;
}

static void
port_map_init(void)
{
	unsigned int i;

	for (i = 0; i < RTE_MAX_ETHPORTS; i++)
		port_map_init_one(i);
}

static void
forward_array_init_one(int i)
{
	ports_fwd_array[i].in_port_id = PORT_RESET;
	ports_fwd_array[i].out_port_id = PORT_RESET;
}

/* initialize forward array with default value */
static void
forward_array_init(void)
{
	unsigned int i;

	/* initialize port forward array */
	for (i = 0; i < RTE_MAX_ETHPORTS; i++)
		forward_array_init_one(i);
}

static int
do_send(int *connected, int *sock, char *str)
{
	int ret;

	ret = send(*sock, str, MSG_SIZE, 0);
	if (ret == -1) {
		RTE_LOG(ERR, APP, "send failed");
		*connected = 0;
		return -1;
	}

	RTE_LOG(INFO, APP, "To Server: %s\n", str);

	return 0;
}

static void
forward_array_reset(void)
{
	unsigned int i;

	/* initialize port forward array */
	for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
		if (ports_fwd_array[i].in_port_id != PORT_RESET) {
			ports_fwd_array[i].out_port_id = PORT_RESET;
			RTE_LOG(INFO, APP, "Port ID %d\n", i);
			RTE_LOG(INFO, APP, "out_port_id %d\n",
				ports_fwd_array[i].out_port_id);
		}
	}
}

static void
forward_array_remove(int port_id)
{
	unsigned int i;

	/* Update ports_fwd_array */
	forward_array_init_one(port_id);

	for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
		if (ports_fwd_array[i].in_port_id == PORT_RESET)
			continue;

		if (ports_fwd_array[i].out_port_id == port_id) {
			ports_fwd_array[i].out_port_id = PORT_RESET;
			break;
		}
	}
}

/*
 * Return actual port ID which is assigned by system internally, or PORT_RESET
 * if port is not found.
 */
static uint16_t
find_port_id(int id, enum port_type type)
{
	uint16_t port_id = PORT_RESET;
	uint16_t i;

	for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
		if (port_map[i].port_type != type)
			continue;

		if (port_map[i].id == id) {
			port_id = i;
			break;
		}
	}

	return port_id;
}

static int
do_del(char *res_uid)
{
	uint16_t port_id = PORT_RESET;
	char *p_type;
	int p_id;
	int res;

	res = parse_resource_uid(res_uid, &p_type, &p_id);
	if (res < 0) {
		RTE_LOG(ERR, APP,
			"Failed to parse resource UID\n");
		return -1;
	}

	if (!strcmp(p_type, "ring")) {
		RTE_LOG(DEBUG, APP, "Del ring id %d\n", p_id);
		port_id = find_port_id(p_id, RING);
		if (port_id == PORT_RESET)
			return -1;

		dev_detach_by_port_id(port_id);
	}

	forward_array_remove(port_id);
	port_map_init_one(port_id);

	return 0;
}

/* Return 0 if invalid */
static int
is_valid_port(uint16_t port_id)
{
	if (port_id > RTE_MAX_ETHPORTS)
		return 0;

	return port_map[port_id].id != PORT_RESET;
}

/* Return -1 as an error if given patch is invalid */
static int
add_patch(uint16_t in_port, uint16_t out_port)
{
	if (!is_valid_port(in_port) || !is_valid_port(out_port))
		return -1;

	/* Populate in port data */
	ports_fwd_array[in_port].in_port_id = in_port;
	ports_fwd_array[in_port].rx_func = &rte_eth_rx_burst;
	ports_fwd_array[in_port].tx_func = &rte_eth_tx_burst;
	ports_fwd_array[in_port].out_port_id = out_port;

	/* Populate out port data */
	ports_fwd_array[out_port].in_port_id = out_port;
	ports_fwd_array[out_port].rx_func = &rte_eth_rx_burst;
	ports_fwd_array[out_port].tx_func = &rte_eth_tx_burst;

	RTE_LOG(DEBUG, APP, "STATUS: in port %d in_port_id %d\n", in_port,
		ports_fwd_array[in_port].in_port_id);
	RTE_LOG(DEBUG, APP, "STATUS: in port %d patch out port id %d\n",
		in_port, ports_fwd_array[in_port].out_port_id);
	RTE_LOG(DEBUG, APP, "STATUS: outport %d in_port_id %d\n", out_port,
		ports_fwd_array[out_port].in_port_id);

	return 0;
}

static struct rte_memzone *
get_memzone_by_addr(const void *addr)
{
	struct rte_memzone *tmp, *mz;
	struct rte_mem_config *mcfg;
	struct rte_fbarray *arr;
	int i;

	mcfg = rte_eal_get_configuration()->mem_config;
	arr = &mcfg->memzones;
	mz = NULL;

	/* find memzone for the ring */
	i = rte_fbarray_find_next_used(arr, 0);
	while (i >= 0) {
		tmp = rte_fbarray_get(arr, i);
		if (mz->addr_64 == (uint64_t) addr) {
			mz = tmp;
			break;
		}
		i = rte_fbarray_find_next_used(arr, i+1);
	}

	return mz;
}

/*
 * Create ring PMD with given ring_id.
 */
static int
add_ring_pmd(int ring_id)
{
	const struct rte_memzone *memzone;
	struct rte_ring *ring;
	int res;
	char rx_queue_name[32];  /* Prefix and number like as 'eth_ring_0' */

	memset(rx_queue_name, '\0', sizeof(rx_queue_name));
	sprintf(rx_queue_name, "%s", get_rx_queue_name(ring_id));

	/* Look up ring with provided ring_id */
	ring = rte_ring_lookup(rx_queue_name);
	if (ring == NULL) {
		RTE_LOG(ERR, APP,
			"Failed to get RX ring %s - is primary running?\n",
			rx_queue_name);
		return -1;
	}
	RTE_LOG(INFO, APP, "Looked up ring '%s'\n", rx_queue_name);

	memzone = get_memzone_by_addr(ring);
	if (memzone == NULL) {
		RTE_LOG(ERR, APP, "Cannot get memzone\n");
		return -1;
	}

	/* Create ring pmd */
	ring->memzone = memzone;
	res = rte_eth_from_ring(ring);
	if (res < 0) {
		RTE_LOG(ERR, APP,
			"Cannot create eth dev with rte_eth_from_ring()\n");
		return -1;
	}
	RTE_LOG(INFO, APP, "Created ring PMD: %d\n", res);

	return res;
}

/**
 * Add a port to this process. Port is described with resource UID which is a
 * combination of port type and ID like as 'ring:0'.
 */
static int
do_add(char *res_uid)
{
	enum port_type type = UNDEF;
	uint16_t port_id = PORT_RESET;
	char *p_type;
	int p_id;
	int res;

	res = parse_resource_uid(res_uid, &p_type, &p_id);
	if (res < 0)
		return -1;

	if (!strcmp(p_type, "ring")) {
		type = RING;
		res = add_ring_pmd(p_id);
	}

	if (res < 0)
		return -1;
	else
		port_id = (uint16_t) res;

	port_map[port_id].id = p_id;
	port_map[port_id].port_type = type;
	port_map[port_id].stats = &ports->client_stats[p_id];

	/* Update ports_fwd_array with port id */
	ports_fwd_array[port_id].in_port_id = port_id;

	return 0;
}

/* Return -1 if exit command is called to terminate the process */
static int
parse_command(char *str)
{
	char *token_list[MAX_PARAMETER] = {NULL};
	int max_token = 0;
	int ret = 0;

	if (!str)
		return 0;

	/* tokenize the user commands from controller */
	token_list[max_token] = strtok(str, " ");
	while (token_list[max_token] != NULL) {
		RTE_LOG(DEBUG, APP, "token %d = %s\n", max_token,
			token_list[max_token]);
		max_token++;
		token_list[max_token] = strtok(NULL, " ");
	}

	if (max_token == 0)
		return 0;

	if (!strcmp(token_list[0], "status")) {
		RTE_LOG(DEBUG, APP, "status\n");
		memset(str, '\0', MSG_SIZE);
		if (cmd == FORWARD)
			get_sec_stats_json(str, client_id, "running",
					ports_fwd_array, port_map);
		else
			get_sec_stats_json(str, client_id, "idling",
					ports_fwd_array, port_map);

	} else if (!strcmp(token_list[0], "_get_client_id")) {
		memset(str, '\0', MSG_SIZE);
		sprintf(str, "%d", client_id);

	} else if (!strcmp(token_list[0], "_set_client_id")) {
		int id;

		if (spp_atoi(token_list[1], &id) >= 0)
			client_id = id;

	} else if (!strcmp(token_list[0], "exit")) {
		RTE_LOG(DEBUG, APP, "exit\n");
		RTE_LOG(DEBUG, APP, "stop\n");
		cmd = STOP;
		ret = -1;

	} else if (!strcmp(token_list[0], "stop")) {
		RTE_LOG(DEBUG, APP, "stop\n");
		cmd = STOP;

	} else if (!strcmp(token_list[0], "forward")) {
		RTE_LOG(DEBUG, APP, "forward\n");
		cmd = FORWARD;

	} else if (strncmp(token_list[0], "add", 3) == 0) {
		RTE_LOG(DEBUG, APP, "Received add command\n");
		if (do_add(token_list[1]) < 0)
			RTE_LOG(ERR, APP, "Failed to do_add()\n");

	} else if (!strcmp(token_list[0], "patch")) {
		RTE_LOG(DEBUG, APP, "patch\n");

		if (max_token <= 1)
			return 0;

		if (strncmp(token_list[1], "reset", 5) == 0) {
			/* reset forward array*/
			forward_array_reset();
		} else {
			uint16_t in_port;
			uint16_t out_port;

			if (max_token <= 2)
				return 0;

			char *in_p_type;
			char *out_p_type;
			int in_p_id;
			int out_p_id;

			parse_resource_uid(token_list[1], &in_p_type, &in_p_id);
			in_port = find_port_id(in_p_id,
					get_port_type(in_p_type));

			parse_resource_uid(token_list[2],
					&out_p_type, &out_p_id);
			out_port = find_port_id(out_p_id,
					get_port_type(out_p_type));

			if (in_port == PORT_RESET && out_port == PORT_RESET) {
				char err_msg[128];
				memset(err_msg, '\0', sizeof(err_msg));
				sprintf(err_msg, "%s '%s:%d' and '%s:%d'",
						"Patch not found, both of",
						in_p_type, in_p_id,
						out_p_type, out_p_id);
				RTE_LOG(ERR, APP, "%s\n", err_msg);
			} else if (in_port == PORT_RESET) {
				char err_msg[128];
				memset(err_msg, '\0', sizeof(err_msg));
				sprintf(err_msg, "%s '%s:%d'",
						"Patch not found, in_port",
						in_p_type, in_p_id);
				RTE_LOG(ERR, APP, "%s\n", err_msg);
			} else if (out_port == PORT_RESET) {
				char err_msg[128];
				memset(err_msg, '\0', sizeof(err_msg));
				sprintf(err_msg, "%s '%s:%d'",
						"Patch not found, out_port",
						out_p_type, out_p_id);
				RTE_LOG(ERR, APP, "%s\n", err_msg);
			}

			if (add_patch(in_port, out_port) == 0)
				RTE_LOG(INFO, APP,
					"Patched '%s:%d' and '%s:%d'\n",
					in_p_type, in_p_id,
					out_p_type, out_p_id);
			else
				RTE_LOG(ERR, APP, "Failed to patch\n");
			ret = 0;
		}
	} else if (strncmp(str, "del", 3) == 0) {
		RTE_LOG(DEBUG, APP, "Received del command\n");

		cmd = STOP;

		if (do_del(token_list[1]) < 0)
			RTE_LOG(ERR, APP, "Failed to do_del()\n");
	}

	return ret;
}

static int
do_receive(int *connected, int *sock, char *str)
{
	int ret;

	memset(str, '\0', MSG_SIZE);

	ret = recv(*sock, str, MSG_SIZE, 0);
	if (ret <= 0) {
		RTE_LOG(DEBUG, APP, "Receive count: %d\n", ret);
		if (ret < 0)
			RTE_LOG(ERR, APP, "Receive Fail");
		else
			RTE_LOG(INFO, APP, "Receive 0\n");

		RTE_LOG(INFO, APP, "Assume Server closed connection\n");
		close(*sock);
		*sock = SOCK_RESET;
		*connected = 0;
		return -1;
	}

	return 0;
}

static int
do_connection(int *connected, int *sock)
{
	static struct sockaddr_in servaddr;
	int ret = 0;

	if (*connected == 0) {
		if (*sock < 0) {
			RTE_LOG(INFO, APP, "Creating socket...\n");
			*sock = socket(AF_INET, SOCK_STREAM, 0);
			if (*sock < 0)
				rte_exit(EXIT_FAILURE, "socket error\n");

			/* Creation of the socket */
			memset(&servaddr, 0, sizeof(servaddr));
			servaddr.sin_family = AF_INET;
			servaddr.sin_addr.s_addr = inet_addr(server_ip);
			servaddr.sin_port = htons(server_port);
		}

		RTE_LOG(INFO, APP, "Trying to connect ... socket %d\n", *sock);
		ret = connect(*sock, (struct sockaddr *) &servaddr,
			sizeof(servaddr));
		if (ret < 0) {
			RTE_LOG(ERR, APP, "Connection Error");
			return ret;
		}

		RTE_LOG(INFO, APP, "Connected\n");
		*connected = 1;
	}

	return ret;
}

int
main(int argc, char *argv[])
{
	unsigned int lcore_id;
	int sock = SOCK_RESET;
	int connected = 0;
	char str[MSG_SIZE];
	int ret;
	int flg_exit;  // used as res of parse_command() to exit if -1
	int i;

	/* initialise the system */
	if (init(argc, argv) < 0)
		return -1;

	/* initialize port forward array*/
	forward_array_init();
	port_map_init();

	/* update port_forward_array with active port */
	for (i = 0; i < RTE_MAX_ETHPORTS; i++) {
		if (!rte_eth_dev_is_valid_port(i))
			continue;

		/* Update ports_fwd_array with phy port*/
		ports_fwd_array[i].in_port_id = i;
		port_map[i].port_type = PHY;
		port_map[i].id = i;
		port_map[i].stats = &ports->port_stats[i];
	}

	RTE_LOG(INFO, APP, "Finished Process Init.\n");

	lcore_id = 0;
	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
		rte_eal_remote_launch(main_loop, NULL, lcore_id);
	}

	while (on) {
		ret = do_connection(&connected, &sock);
		if (ret < 0) {
			sleep(1);
			continue;
		}

		ret = do_receive(&connected, &sock, str);
		if (ret < 0)
			continue;

		RTE_LOG(DEBUG, APP, "Received string: %s\n", str);

		flg_exit = parse_command(str);

		/* Send the message back to client */
		ret = do_send(&connected, &sock, str);

		if (flg_exit < 0)  /* terminate process if exit is called */
			break;
		else if (ret < 0)
			continue;
	}

	/* exit */
	close(sock);
	sock = SOCK_RESET;
	RTE_LOG(INFO, APP, "spp_vm exit.\n");
	return 0;
}