summaryrefslogtreecommitdiff
path: root/examples/qos_meter/main.c
blob: ce1f63dc7abcbc676a55bf33ef8d4ffd0d183082 (plain)
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
/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2016 Intel Corporation
 */

#include <stdio.h>
#include <getopt.h>

#include <rte_common.h>
#include <rte_eal.h>
#include <rte_malloc.h>
#include <rte_mempool.h>
#include <rte_ethdev.h>
#include <rte_cycles.h>
#include <rte_mbuf.h>
#include <rte_meter.h>

/*
 * Traffic metering configuration
 *
 */
#define APP_MODE_FWD                    0
#define APP_MODE_SRTCM_COLOR_BLIND      1
#define APP_MODE_SRTCM_COLOR_AWARE      2
#define APP_MODE_TRTCM_COLOR_BLIND      3
#define APP_MODE_TRTCM_COLOR_AWARE      4

#define APP_MODE	APP_MODE_SRTCM_COLOR_BLIND


#include "main.h"


#define APP_PKT_FLOW_POS                33
#define APP_PKT_COLOR_POS               5


#if APP_PKT_FLOW_POS > 64 || APP_PKT_COLOR_POS > 64
#error Byte offset needs to be less than 64
#endif

/*
 * Buffer pool configuration
 *
 ***/
#define NB_MBUF             8192
#define MEMPOOL_CACHE_SIZE  256

static struct rte_mempool *pool = NULL;

/*
 * NIC configuration
 *
 ***/
static struct rte_eth_conf port_conf = {
	.rxmode = {
		.mq_mode	= ETH_MQ_RX_RSS,
		.max_rx_pkt_len = RTE_ETHER_MAX_LEN,
		.split_hdr_size = 0,
		.offloads = DEV_RX_OFFLOAD_CHECKSUM,
	},
	.rx_adv_conf = {
		.rss_conf = {
			.rss_key = NULL,
			.rss_hf = ETH_RSS_IP,
		},
	},
	.txmode = {
		.mq_mode = ETH_DCB_NONE,
	},
};

#define NIC_RX_QUEUE_DESC               1024
#define NIC_TX_QUEUE_DESC               1024

#define NIC_RX_QUEUE                    0
#define NIC_TX_QUEUE                    0

/*
 * Packet RX/TX
 *
 ***/
#define PKT_RX_BURST_MAX                32
#define PKT_TX_BURST_MAX                32
#define TIME_TX_DRAIN                   200000ULL

static uint16_t port_rx;
static uint16_t port_tx;
static struct rte_mbuf *pkts_rx[PKT_RX_BURST_MAX];
struct rte_eth_dev_tx_buffer *tx_buffer;

struct rte_meter_srtcm_params app_srtcm_params = {
	.cir = 1000000 * 46,
	.cbs = 2048,
	.ebs = 2048
};

struct rte_meter_srtcm_profile app_srtcm_profile;

struct rte_meter_trtcm_params app_trtcm_params = {
	.cir = 1000000 * 46,
	.pir = 1500000 * 46,
	.cbs = 2048,
	.pbs = 2048
};

struct rte_meter_trtcm_profile app_trtcm_profile;

#define APP_FLOWS_MAX  256

FLOW_METER app_flows[APP_FLOWS_MAX];

static int
app_configure_flow_table(void)
{
	uint32_t i;
	int ret;

	ret = rte_meter_srtcm_profile_config(&app_srtcm_profile,
		&app_srtcm_params);
	if (ret)
		return ret;

	ret = rte_meter_trtcm_profile_config(&app_trtcm_profile,
		&app_trtcm_params);
	if (ret)
		return ret;

	for (i = 0; i < APP_FLOWS_MAX; i++) {
		ret = FUNC_CONFIG(&app_flows[i], &PROFILE);
		if (ret)
			return ret;
	}

	return 0;
}

static inline void
app_set_pkt_color(uint8_t *pkt_data, enum policer_action color)
{
	pkt_data[APP_PKT_COLOR_POS] = (uint8_t)color;
}

static inline int
app_pkt_handle(struct rte_mbuf *pkt, uint64_t time)
{
	uint8_t input_color, output_color;
	uint8_t *pkt_data = rte_pktmbuf_mtod(pkt, uint8_t *);
	uint32_t pkt_len = rte_pktmbuf_pkt_len(pkt) -
		sizeof(struct rte_ether_hdr);
	uint8_t flow_id = (uint8_t)(pkt_data[APP_PKT_FLOW_POS] & (APP_FLOWS_MAX - 1));
	input_color = pkt_data[APP_PKT_COLOR_POS];
	enum policer_action action;

	/* color input is not used for blind modes */
	output_color = (uint8_t) FUNC_METER(&app_flows[flow_id],
		&PROFILE,
		time,
		pkt_len,
		(enum rte_meter_color) input_color);

	/* Apply policing and set the output color */
	action = policer_table[input_color][output_color];
	app_set_pkt_color(pkt_data, action);

	return action;
}


static __attribute__((noreturn)) int
main_loop(__attribute__((unused)) void *dummy)
{
	uint64_t current_time, last_time = rte_rdtsc();
	uint32_t lcore_id = rte_lcore_id();

	printf("Core %u: port RX = %d, port TX = %d\n", lcore_id, port_rx, port_tx);

	while (1) {
		uint64_t time_diff;
		int i, nb_rx;

		/* Mechanism to avoid stale packets in the output buffer */
		current_time = rte_rdtsc();
		time_diff = current_time - last_time;
		if (unlikely(time_diff > TIME_TX_DRAIN)) {
			/* Flush tx buffer */
			rte_eth_tx_buffer_flush(port_tx, NIC_TX_QUEUE, tx_buffer);
			last_time = current_time;
		}

		/* Read packet burst from NIC RX */
		nb_rx = rte_eth_rx_burst(port_rx, NIC_RX_QUEUE, pkts_rx, PKT_RX_BURST_MAX);

		/* Handle packets */
		for (i = 0; i < nb_rx; i ++) {
			struct rte_mbuf *pkt = pkts_rx[i];

			/* Handle current packet */
			if (app_pkt_handle(pkt, current_time) == DROP)
				rte_pktmbuf_free(pkt);
			else
				rte_eth_tx_buffer(port_tx, NIC_TX_QUEUE, tx_buffer, pkt);
		}
	}
}

static void
print_usage(const char *prgname)
{
	printf ("%s [EAL options] -- -p PORTMASK\n"
		"  -p PORTMASK: hexadecimal bitmask of ports to configure\n",
		prgname);
}

static int
parse_portmask(const char *portmask)
{
	char *end = NULL;
	unsigned long pm;

	/* parse hexadecimal string */
	pm = strtoul(portmask, &end, 16);
	if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
		return -1;

	if (pm == 0)
		return -1;

	return pm;
}

/* Parse the argument given in the command line of the application */
static int
parse_args(int argc, char **argv)
{
	int opt;
	char **argvopt;
	int option_index;
	char *prgname = argv[0];
	static struct option lgopts[] = {
		{NULL, 0, 0, 0}
	};
	uint64_t port_mask, i, mask;

	argvopt = argv;

	while ((opt = getopt_long(argc, argvopt, "p:", lgopts, &option_index)) != EOF) {
		switch (opt) {
		case 'p':
			port_mask = parse_portmask(optarg);
			if (port_mask == 0) {
				printf("invalid port mask (null port mask)\n");
				print_usage(prgname);
				return -1;
			}

			for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){
				if (mask & port_mask){
					port_rx = i;
					port_mask &= ~ mask;
					break;
				}
			}

			for (i = 0, mask = 1; i < 64; i ++, mask <<= 1){
				if (mask & port_mask){
					port_tx = i;
					port_mask &= ~ mask;
					break;
				}
			}

			if (port_mask != 0) {
				printf("invalid port mask (more than 2 ports)\n");
				print_usage(prgname);
				return -1;
			}
			break;

		default:
			print_usage(prgname);
			return -1;
		}
	}

	if (optind <= 1) {
		print_usage(prgname);
		return -1;
	}

	argv[optind-1] = prgname;

	optind = 1; /* reset getopt lib */
	return 0;
}

int
main(int argc, char **argv)
{
	uint32_t lcore_id;
	uint16_t nb_rxd = NIC_RX_QUEUE_DESC;
	uint16_t nb_txd = NIC_TX_QUEUE_DESC;
	struct rte_eth_conf conf;
	struct rte_eth_rxconf rxq_conf;
	struct rte_eth_txconf txq_conf;
	struct rte_eth_dev_info dev_info;
	int ret;

	/* EAL init */
	ret = rte_eal_init(argc, argv);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Invalid EAL parameters\n");
	argc -= ret;
	argv += ret;
	if (rte_lcore_count() != 1) {
		rte_exit(EXIT_FAILURE, "This application does not accept more than one core. "
		"Please adjust the \"-c COREMASK\" parameter accordingly.\n");
	}

	/* Application non-EAL arguments parse */
	ret = parse_args(argc, argv);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Invalid input arguments\n");

	/* Buffer pool init */
	pool = rte_pktmbuf_pool_create("pool", NB_MBUF, MEMPOOL_CACHE_SIZE,
		0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
	if (pool == NULL)
		rte_exit(EXIT_FAILURE, "Buffer pool creation error\n");

	/* NIC init */
	conf = port_conf;
	rte_eth_dev_info_get(port_rx, &dev_info);
	if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
		conf.txmode.offloads |= DEV_TX_OFFLOAD_MBUF_FAST_FREE;

	conf.rx_adv_conf.rss_conf.rss_hf &= dev_info.flow_type_rss_offloads;
	if (conf.rx_adv_conf.rss_conf.rss_hf !=
			port_conf.rx_adv_conf.rss_conf.rss_hf) {
		printf("Port %u modified RSS hash function based on hardware support,"
			"requested:%#"PRIx64" configured:%#"PRIx64"\n",
			port_rx,
			port_conf.rx_adv_conf.rss_conf.rss_hf,
			conf.rx_adv_conf.rss_conf.rss_hf);
	}

	ret = rte_eth_dev_configure(port_rx, 1, 1, &conf);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_rx, ret);

	ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_rx, &nb_rxd, &nb_txd);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Port %d adjust number of descriptors error (%d)\n",
				port_rx, ret);

	rxq_conf = dev_info.default_rxconf;
	rxq_conf.offloads = conf.rxmode.offloads;
	ret = rte_eth_rx_queue_setup(port_rx, NIC_RX_QUEUE, nb_rxd,
				rte_eth_dev_socket_id(port_rx),
				&rxq_conf, pool);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_rx, ret);

	txq_conf = dev_info.default_txconf;
	txq_conf.offloads = conf.txmode.offloads;
	ret = rte_eth_tx_queue_setup(port_rx, NIC_TX_QUEUE, nb_txd,
				rte_eth_dev_socket_id(port_rx),
				&txq_conf);
	if (ret < 0)
	rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_rx, ret);

	conf = port_conf;
	rte_eth_dev_info_get(port_tx, &dev_info);
	if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
		conf.txmode.offloads |= DEV_TX_OFFLOAD_MBUF_FAST_FREE;

	conf.rx_adv_conf.rss_conf.rss_hf &= dev_info.flow_type_rss_offloads;
	if (conf.rx_adv_conf.rss_conf.rss_hf !=
			port_conf.rx_adv_conf.rss_conf.rss_hf) {
		printf("Port %u modified RSS hash function based on hardware support,"
			"requested:%#"PRIx64" configured:%#"PRIx64"\n",
			port_tx,
			port_conf.rx_adv_conf.rss_conf.rss_hf,
			conf.rx_adv_conf.rss_conf.rss_hf);
	}

	ret = rte_eth_dev_configure(port_tx, 1, 1, &conf);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Port %d configuration error (%d)\n", port_tx, ret);

	nb_rxd = NIC_RX_QUEUE_DESC;
	nb_txd = NIC_TX_QUEUE_DESC;
	ret = rte_eth_dev_adjust_nb_rx_tx_desc(port_tx, &nb_rxd, &nb_txd);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Port %d adjust number of descriptors error (%d)\n",
				port_tx, ret);

	rxq_conf = dev_info.default_rxconf;
	rxq_conf.offloads = conf.rxmode.offloads;
	ret = rte_eth_rx_queue_setup(port_tx, NIC_RX_QUEUE, nb_rxd,
				rte_eth_dev_socket_id(port_tx),
				NULL, pool);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Port %d RX queue setup error (%d)\n", port_tx, ret);

	txq_conf = dev_info.default_txconf;
	txq_conf.offloads = conf.txmode.offloads;
	ret = rte_eth_tx_queue_setup(port_tx, NIC_TX_QUEUE, nb_txd,
				rte_eth_dev_socket_id(port_tx),
				NULL);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Port %d TX queue setup error (%d)\n", port_tx, ret);

	tx_buffer = rte_zmalloc_socket("tx_buffer",
			RTE_ETH_TX_BUFFER_SIZE(PKT_TX_BURST_MAX), 0,
			rte_eth_dev_socket_id(port_tx));
	if (tx_buffer == NULL)
		rte_exit(EXIT_FAILURE, "Port %d TX buffer allocation error\n",
				port_tx);

	rte_eth_tx_buffer_init(tx_buffer, PKT_TX_BURST_MAX);

	ret = rte_eth_dev_start(port_rx);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_rx, ret);

	ret = rte_eth_dev_start(port_tx);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Port %d start error (%d)\n", port_tx, ret);

	rte_eth_promiscuous_enable(port_rx);

	rte_eth_promiscuous_enable(port_tx);

	/* App configuration */
	ret = app_configure_flow_table();
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Invalid configure flow table\n");

	/* Launch per-lcore init on every lcore */
	rte_eal_mp_remote_launch(main_loop, NULL, CALL_MASTER);
	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
		if (rte_eal_wait_lcore(lcore_id) < 0)
			return -1;
	}

	return 0;
}