aboutsummaryrefslogtreecommitdiffstats
path: root/examples/l4fwd/port.h
blob: b727b1b55bd982fa91f5d7ee13de6f3aad37fcf5 (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
448
449
450
451
452
453
454
455
456
457
458
459
460
461
/*
 * Copyright (c) 2016  Intel Corporation.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef PORT_H_
#define PORT_H_

static void
prepare_hash_key(struct netbe_port *uprt, uint8_t key_size, uint16_t family)
{
	uint32_t align_nb_q;

	align_nb_q = rte_align32pow2(uprt->nb_lcore);
	memset(uprt->hash_key, 0, RSS_HASH_KEY_LENGTH);
	uprt->hash_key_size = key_size;
	if (family == AF_INET)
		uprt->hash_key[RSS_HASH_KEY_DEST_PORT_LOC_IPV4] = align_nb_q;
	else
		uprt->hash_key[RSS_HASH_KEY_DEST_PORT_LOC_IPV6] = align_nb_q;
}

static int
update_rss_conf(struct netbe_port *uprt,
	const struct rte_eth_dev_info *dev_info,
	struct rte_eth_conf *port_conf, uint32_t proto)
{
	uint8_t hash_key_size;

	if (uprt->nb_lcore > 1) {
		if (dev_info->hash_key_size > 0)
			hash_key_size = dev_info->hash_key_size;
		else {
			RTE_LOG(ERR, USER1,
				"%s: dev_info did not provide a valid hash "
				"key size\n", __func__);
			return -EINVAL;
		}

		if (uprt->ipv4 != INADDR_ANY &&
				memcmp(&uprt->ipv6, &in6addr_any,
				sizeof(uprt->ipv6)) != 0) {
			RTE_LOG(ERR, USER1,
				"%s: RSS for both IPv4 and IPv6 not "
				"supported!\n", __func__);
			return -EINVAL;
		} else if (uprt->ipv4 != INADDR_ANY) {
			prepare_hash_key(uprt, hash_key_size, AF_INET);
		} else if (memcmp(&uprt->ipv6, &in6addr_any, sizeof(uprt->ipv6))
				!= 0) {
			prepare_hash_key(uprt, hash_key_size, AF_INET6);
		} else {
			RTE_LOG(ERR, USER1,
				"%s: No IPv4 or IPv6 address is found!\n",
				__func__);
			return -EINVAL;
		}
		port_conf->rxmode.mq_mode = ETH_MQ_RX_RSS;
		if (proto == TLE_PROTO_TCP)
			port_conf->rx_adv_conf.rss_conf.rss_hf = ETH_RSS_TCP;
		else
			port_conf->rx_adv_conf.rss_conf.rss_hf = ETH_RSS_UDP;
		port_conf->rx_adv_conf.rss_conf.rss_key_len = hash_key_size;
		port_conf->rx_adv_conf.rss_conf.rss_key = uprt->hash_key;
	}

	return 0;
}

static uint32_t
qidx_from_hash_index(uint32_t hash, uint32_t align_nb_q)
{
	uint32_t i, nb_bit, q;

	nb_bit = (sizeof(uint32_t) * CHAR_BIT) - __builtin_clz(align_nb_q - 1);
	q = (hash & 1);
	for (i = 1; i < nb_bit; i++) {
		hash >>= 1;
		q <<= 1;
		q |= (hash & 1);
	}

	return q;
}

static int
update_rss_reta(struct netbe_port *uprt,
	const struct rte_eth_dev_info *dev_info)
{
	struct rte_eth_rss_reta_entry64 reta_conf[RSS_RETA_CONF_ARRAY_SIZE];
	int32_t i, rc, align_nb_q;
	int32_t q_index, idx, shift;

	if (uprt->nb_lcore > 1) {
		if (dev_info->reta_size == 0) {
			RTE_LOG(ERR, USER1,
				"%s: Redirection table size 0 is invalid for "
				"RSS\n", __func__);
			return -EINVAL;
		}
		RTE_LOG(NOTICE, USER1,
			"%s: The reta size of port %d is %u\n",
			__func__, uprt->id, dev_info->reta_size);

		if (dev_info->reta_size > ETH_RSS_RETA_SIZE_512) {
			RTE_LOG(ERR, USER1,
				"%s: More than %u entries of Reta not supported\n",
				__func__, ETH_RSS_RETA_SIZE_512);
			return -EINVAL;
		}

		memset(reta_conf, 0, sizeof(reta_conf));
		align_nb_q = rte_align32pow2(uprt->nb_lcore);
		for (i = 0; i < align_nb_q; i++) {
			q_index = qidx_from_hash_index(i, align_nb_q) %
						uprt->nb_lcore;

			idx = i / RTE_RETA_GROUP_SIZE;
			shift = i % RTE_RETA_GROUP_SIZE;
			reta_conf[idx].mask |= (1ULL << shift);
			reta_conf[idx].reta[shift] = q_index;
			RTE_LOG(NOTICE, USER1,
				"%s: port=%u RSS reta conf: hash=%u, q=%u\n",
				__func__, uprt->id, i, q_index);
		}

		rc = rte_eth_dev_rss_reta_update(uprt->id,
				reta_conf, dev_info->reta_size);
		if (rc != 0) {
			RTE_LOG(ERR, USER1,
				"%s: Bad redirection table parameter, "
				"rc = %d\n", __func__, rc);
			return rc;
		}
	}

	return 0;
}

/*
 * Initilise DPDK port.
 * In current version, multi-queue per port is used.
 */
static int
port_init(struct netbe_port *uprt, uint32_t proto)
{
	int32_t rc;
	struct rte_eth_conf port_conf;
	struct rte_eth_dev_info dev_info;

	rte_eth_dev_info_get(uprt->id, &dev_info);
	if ((dev_info.rx_offload_capa & uprt->rx_offload) != uprt->rx_offload) {
		RTE_LOG(ERR, USER1,
			"port#%u supported/requested RX offloads don't match, "
			"supported: %#" PRIx64 ", requested: %#" PRIx64 ";\n",
			uprt->id, (uint64_t)dev_info.rx_offload_capa,
			(uint64_t)uprt->rx_offload);
		return -EINVAL;
	}
	if ((dev_info.tx_offload_capa & uprt->tx_offload) != uprt->tx_offload) {
		RTE_LOG(ERR, USER1,
			"port#%u supported/requested TX offloads don't match, "
			"supported: %#" PRIx64 ", requested: %#" PRIx64 ";\n",
			uprt->id, (uint64_t)dev_info.tx_offload_capa,
			(uint64_t)uprt->tx_offload);
		return -EINVAL;
	}

	port_conf = port_conf_default;
	if ((uprt->rx_offload & RX_CSUM_OFFLOAD) != 0) {
		RTE_LOG(ERR, USER1, "%s(%u): enabling RX csum offload;\n",
			__func__, uprt->id);
		port_conf.rxmode.hw_ip_checksum = 1;
	}
	port_conf.rxmode.max_rx_pkt_len = uprt->mtu + ETHER_CRC_LEN;
	if (port_conf.rxmode.max_rx_pkt_len > ETHER_MAX_LEN)
		port_conf.rxmode.jumbo_frame = 1;

	rc = update_rss_conf(uprt, &dev_info, &port_conf, proto);
	if (rc != 0)
		return rc;

	rc = rte_eth_dev_configure(uprt->id, uprt->nb_lcore, uprt->nb_lcore,
			&port_conf);
	RTE_LOG(NOTICE, USER1,
		"%s: rte_eth_dev_configure(prt_id=%u, nb_rxq=%u, nb_txq=%u) "
		"returns %d;\n", __func__, uprt->id, uprt->nb_lcore,
		uprt->nb_lcore, rc);
	if (rc != 0)
		return rc;

	return 0;
}

static int
queue_init(struct netbe_port *uprt, struct rte_mempool *mp)
{
	int32_t socket, rc;
	uint16_t q;
	uint32_t nb_rxd, nb_txd;
	struct rte_eth_dev_info dev_info;

	rte_eth_dev_info_get(uprt->id, &dev_info);

	socket = rte_eth_dev_socket_id(uprt->id);

	dev_info.default_rxconf.rx_drop_en = 1;

	nb_rxd = RTE_MIN(RX_RING_SIZE, dev_info.rx_desc_lim.nb_max);
	nb_txd = RTE_MIN(TX_RING_SIZE, dev_info.tx_desc_lim.nb_max);

	dev_info.default_txconf.tx_free_thresh = nb_txd / 2;
	if (uprt->tx_offload != 0) {
		RTE_LOG(ERR, USER1, "%s(%u): enabling full featured TX;\n",
			__func__, uprt->id);
		dev_info.default_txconf.txq_flags = 0;
	}

	for (q = 0; q < uprt->nb_lcore; q++) {
		rc = rte_eth_rx_queue_setup(uprt->id, q, nb_rxd,
			socket, &dev_info.default_rxconf, mp);
		if (rc < 0) {
			RTE_LOG(ERR, USER1,
				"%s: rx queue=%u setup failed with error "
				"code: %d\n", __func__, q, rc);
			return rc;
		}
	}

	for (q = 0; q < uprt->nb_lcore; q++) {
		rc = rte_eth_tx_queue_setup(uprt->id, q, nb_txd,
			socket, &dev_info.default_txconf);
		if (rc < 0) {
			RTE_LOG(ERR, USER1,
				"%s: tx queue=%u setup failed with error "
				"code: %d\n", __func__, q, rc);
			return rc;
		}
	}
	return 0;
}

/*
 * Check that lcore is enabled, not master, and not in use already.
 */
static int
check_lcore(uint32_t lc)
{
	if (rte_lcore_is_enabled(lc) == 0) {
		RTE_LOG(ERR, USER1, "lcore %u is not enabled\n", lc);
		return -EINVAL;
	}
	if (rte_eal_get_lcore_state(lc) == RUNNING) {
		RTE_LOG(ERR, USER1, "lcore %u already running %p\n",
			lc, lcore_config[lc].f);
		return -EINVAL;
	}
	return 0;
}

static void
log_netbe_prt(const struct netbe_port *uprt)
{
	uint32_t i;
	char corelist[2 * RTE_MAX_LCORE + 1];
	char hashkey[2 * RSS_HASH_KEY_LENGTH];

	memset(corelist, 0, sizeof(corelist));
	memset(hashkey, 0, sizeof(hashkey));
	for (i = 0; i < uprt->nb_lcore; i++)
		if (i < uprt->nb_lcore - 1)
			sprintf(corelist + (2 * i), "%u,", uprt->lcore_id[i]);
		else
			sprintf(corelist + (2 * i), "%u", uprt->lcore_id[i]);

	for (i = 0; i < uprt->hash_key_size; i++)
		sprintf(hashkey + (2 * i), "%02x", uprt->hash_key[i]);

	RTE_LOG(NOTICE, USER1,
		"uprt %p = <id = %u, lcore = <%s>, mtu = %u, "
		"rx_offload = %#" PRIx64 ", tx_offload = %#" PRIx64 ",\n"
		"ipv4 = %#x, "
		"ipv6 = %04hx:%04hx:%04hx:%04hx:%04hx:%04hx:%04hx:%04hx, "
		"mac = %02hhx:%02hhx:%02hhx:%02hhx:%02hhx:%02hhx>;\n"
		"hashkey = %s;\n",
		uprt, uprt->id, corelist,
		uprt->mtu, uprt->rx_offload, uprt->tx_offload,
		uprt->ipv4,
		uprt->ipv6.s6_addr16[0], uprt->ipv6.s6_addr16[1],
		uprt->ipv6.s6_addr16[2], uprt->ipv6.s6_addr16[3],
		uprt->ipv6.s6_addr16[4], uprt->ipv6.s6_addr16[5],
		uprt->ipv6.s6_addr16[6], uprt->ipv6.s6_addr16[7],
		uprt->mac.addr_bytes[0], uprt->mac.addr_bytes[1],
		uprt->mac.addr_bytes[2], uprt->mac.addr_bytes[3],
		uprt->mac.addr_bytes[4], uprt->mac.addr_bytes[5],
		hashkey);
}

static void
log_netbe_cfg(const struct netbe_cfg *ucfg)
{
	uint32_t i;

	RTE_LOG(NOTICE, USER1,
		"ucfg @ %p, prt_num = %u\n", ucfg, ucfg->prt_num);

	for (i = 0; i != ucfg->prt_num; i++)
		log_netbe_prt(ucfg->prt + i);
}

static int
pool_init(uint32_t sid)
{
	int32_t rc;
	struct rte_mempool *mp;
	char name[RTE_MEMPOOL_NAMESIZE];

	snprintf(name, sizeof(name), "MP%u", sid);
	mp = rte_pktmbuf_pool_create(name, MPOOL_NB_BUF, MPOOL_CACHE_SIZE, 0,
		RTE_MBUF_DEFAULT_BUF_SIZE, sid - 1);
	if (mp == NULL) {
		rc = -rte_errno;
		RTE_LOG(ERR, USER1, "%s(%d) failed with error code: %d\n",
			__func__, sid - 1, rc);
		return rc;
	}

	mpool[sid] = mp;
	return 0;
}

static int
frag_pool_init(uint32_t sid)
{
	int32_t rc;
	struct rte_mempool *frag_mp;
	char frag_name[RTE_MEMPOOL_NAMESIZE];

	snprintf(frag_name, sizeof(frag_name), "frag_MP%u", sid);
	frag_mp = rte_pktmbuf_pool_create(frag_name, MPOOL_NB_BUF,
		MPOOL_CACHE_SIZE, 0, FRAG_MBUF_BUF_SIZE, sid - 1);
	if (frag_mp == NULL) {
		rc = -rte_errno;
		RTE_LOG(ERR, USER1, "%s(%d) failed with error code: %d\n",
			__func__, sid - 1, rc);
		return rc;
	}

	frag_mpool[sid] = frag_mp;
	return 0;
}

static struct netbe_lcore *
find_initilized_lcore(struct netbe_cfg *cfg, uint32_t lc_num)
{
	uint32_t i;

	for (i = 0; i < cfg->cpu_num; i++)
		if (cfg->cpu[i].id == lc_num)
			return &cfg->cpu[i];

	return NULL;
}

/*
 * Setup all enabled ports.
 */
static int
netbe_port_init(struct netbe_cfg *cfg)
{
	int32_t rc;
	uint32_t i, sid, j;
	struct netbe_port *prt;
	struct netbe_lcore *lc;

	for (i = 0; i != cfg->prt_num; i++) {
		prt = cfg->prt + i;
		rc = port_init(prt, cfg->proto);
		if (rc != 0) {
			RTE_LOG(ERR, USER1,
				"%s: port=%u init failed with error code: %d\n",
				__func__, prt->id, rc);
			return rc;
		}
		rte_eth_macaddr_get(prt->id, &prt->mac);
		if (cfg->promisc)
			rte_eth_promiscuous_enable(prt->id);

		for (j = 0; j < prt->nb_lcore; j++) {
			rc = check_lcore(prt->lcore_id[j]);
			if (rc != 0) {
				RTE_LOG(ERR, USER1,
					"%s: processing failed with err: %d\n",
					__func__, rc);
				return rc;
			}

			sid = rte_lcore_to_socket_id(prt->lcore_id[j]) + 1;
			assert(sid < RTE_DIM(mpool));

			if (mpool[sid] == NULL) {
				rc = pool_init(sid);
				if (rc != 0)
					return rc;
			}

			if (frag_mpool[sid] == NULL) {
				rc = frag_pool_init(sid);
				if (rc != 0)
					return rc;
			}

			rc = queue_init(prt, mpool[sid]);
			if (rc != 0) {
				RTE_LOG(ERR, USER1,
					"%s: lcore=%u queue init failed with "
					"err: %d\n",
					__func__, prt->lcore_id[j], rc);
				return rc;
			}

			/* calculate number of queues and assign queue id
			 * per lcore. */
			lc = find_initilized_lcore(cfg, prt->lcore_id[j]);
			if (lc == NULL) {
				lc = &cfg->cpu[cfg->cpu_num];
				lc->id = prt->lcore_id[j];
				lc->proto = becfg.proto;
				cfg->cpu_num++;
			}

			lc->prtq = rte_realloc(lc->prtq, sizeof(*(lc->prtq)) *
				(lc->prtq_num + 1), RTE_CACHE_LINE_SIZE);
			if (lc->prtq == NULL) {
				RTE_LOG(ERR, USER1,
					"%s: failed to reallocate memory\n",
					__func__);
				return -ENOMEM;
			}
			lc->prtq[lc->prtq_num].rxqid = j;
			lc->prtq[lc->prtq_num].txqid = j;
			lc->prtq[lc->prtq_num].port = *prt;
			lc->prtq_num++;
		}
	}
	log_netbe_cfg(cfg);

	return 0;
}

#endif /* PORT_H_ */