1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2015 Intel Corporation 3 */ 4 5 /* 6 * This application is a simple Layer 2 PTP v2 client. It shows delta values 7 * which are used to synchronize the PHC clock. if the "-T 1" parameter is 8 * passed to the application the Linux kernel clock is also synchronized. 9 */ 10 11 #include <stdint.h> 12 #include <inttypes.h> 13 #include <rte_eal.h> 14 #include <rte_ethdev.h> 15 #include <rte_cycles.h> 16 #include <rte_lcore.h> 17 #include <rte_mbuf.h> 18 #include <rte_ip.h> 19 #include <limits.h> 20 #include <sys/time.h> 21 #include <getopt.h> 22 23 #define RX_RING_SIZE 1024 24 #define TX_RING_SIZE 1024 25 26 #define NUM_MBUFS 8191 27 #define MBUF_CACHE_SIZE 250 28 29 /* Values for the PTP messageType field. */ 30 #define SYNC 0x0 31 #define DELAY_REQ 0x1 32 #define PDELAY_REQ 0x2 33 #define PDELAY_RESP 0x3 34 #define FOLLOW_UP 0x8 35 #define DELAY_RESP 0x9 36 #define PDELAY_RESP_FOLLOW_UP 0xA 37 #define ANNOUNCE 0xB 38 #define SIGNALING 0xC 39 #define MANAGEMENT 0xD 40 41 #define NSEC_PER_SEC 1000000000L 42 #define KERNEL_TIME_ADJUST_LIMIT 20000 43 #define PTP_PROTOCOL 0x88F7 44 45 struct rte_mempool *mbuf_pool; 46 uint32_t ptp_enabled_port_mask; 47 uint8_t ptp_enabled_port_nb; 48 static uint8_t ptp_enabled_ports[RTE_MAX_ETHPORTS]; 49 50 static const struct rte_eth_conf port_conf_default = { 51 .rxmode = { 52 .max_rx_pkt_len = ETHER_MAX_LEN, 53 .ignore_offload_bitfield = 1, 54 }, 55 }; 56 57 static const struct ether_addr ether_multicast = { 58 .addr_bytes = {0x01, 0x1b, 0x19, 0x0, 0x0, 0x0} 59 }; 60 61 /* Structs used for PTP handling. */ 62 struct tstamp { 63 uint16_t sec_msb; 64 uint32_t sec_lsb; 65 uint32_t ns; 66 } __attribute__((packed)); 67 68 struct clock_id { 69 uint8_t id[8]; 70 }; 71 72 struct port_id { 73 struct clock_id clock_id; 74 uint16_t port_number; 75 } __attribute__((packed)); 76 77 struct ptp_header { 78 uint8_t msg_type; 79 uint8_t ver; 80 uint16_t message_length; 81 uint8_t domain_number; 82 uint8_t reserved1; 83 uint8_t flag_field[2]; 84 int64_t correction; 85 uint32_t reserved2; 86 struct port_id source_port_id; 87 uint16_t seq_id; 88 uint8_t control; 89 int8_t log_message_interval; 90 } __attribute__((packed)); 91 92 struct sync_msg { 93 struct ptp_header hdr; 94 struct tstamp origin_tstamp; 95 } __attribute__((packed)); 96 97 struct follow_up_msg { 98 struct ptp_header hdr; 99 struct tstamp precise_origin_tstamp; 100 uint8_t suffix[0]; 101 } __attribute__((packed)); 102 103 struct delay_req_msg { 104 struct ptp_header hdr; 105 struct tstamp origin_tstamp; 106 } __attribute__((packed)); 107 108 struct delay_resp_msg { 109 struct ptp_header hdr; 110 struct tstamp rx_tstamp; 111 struct port_id req_port_id; 112 uint8_t suffix[0]; 113 } __attribute__((packed)); 114 115 struct ptp_message { 116 union { 117 struct ptp_header header; 118 struct sync_msg sync; 119 struct delay_req_msg delay_req; 120 struct follow_up_msg follow_up; 121 struct delay_resp_msg delay_resp; 122 } __attribute__((packed)); 123 }; 124 125 struct ptpv2_data_slave_ordinary { 126 struct rte_mbuf *m; 127 struct timespec tstamp1; 128 struct timespec tstamp2; 129 struct timespec tstamp3; 130 struct timespec tstamp4; 131 struct clock_id client_clock_id; 132 struct clock_id master_clock_id; 133 struct timeval new_adj; 134 int64_t delta; 135 uint16_t portid; 136 uint16_t seqID_SYNC; 137 uint16_t seqID_FOLLOWUP; 138 uint8_t ptpset; 139 uint8_t kernel_time_set; 140 uint16_t current_ptp_port; 141 }; 142 143 static struct ptpv2_data_slave_ordinary ptp_data; 144 145 static inline uint64_t timespec64_to_ns(const struct timespec *ts) 146 { 147 return ((uint64_t) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec; 148 } 149 150 static struct timeval 151 ns_to_timeval(int64_t nsec) 152 { 153 struct timespec t_spec = {0, 0}; 154 struct timeval t_eval = {0, 0}; 155 int32_t rem; 156 157 if (nsec == 0) 158 return t_eval; 159 rem = nsec % NSEC_PER_SEC; 160 t_spec.tv_sec = nsec / NSEC_PER_SEC; 161 162 if (rem < 0) { 163 t_spec.tv_sec--; 164 rem += NSEC_PER_SEC; 165 } 166 167 t_spec.tv_nsec = rem; 168 t_eval.tv_sec = t_spec.tv_sec; 169 t_eval.tv_usec = t_spec.tv_nsec / 1000; 170 171 return t_eval; 172 } 173 174 /* 175 * Initializes a given port using global settings and with the RX buffers 176 * coming from the mbuf_pool passed as a parameter. 177 */ 178 static inline int 179 port_init(uint16_t port, struct rte_mempool *mbuf_pool) 180 { 181 struct rte_eth_dev_info dev_info; 182 struct rte_eth_conf port_conf = port_conf_default; 183 const uint16_t rx_rings = 1; 184 const uint16_t tx_rings = 1; 185 int retval; 186 uint16_t q; 187 uint16_t nb_rxd = RX_RING_SIZE; 188 uint16_t nb_txd = TX_RING_SIZE; 189 190 if (!rte_eth_dev_is_valid_port(port)) 191 return -1; 192 193 rte_eth_dev_info_get(port, &dev_info); 194 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE) 195 port_conf.txmode.offloads |= 196 DEV_TX_OFFLOAD_MBUF_FAST_FREE; 197 /* Force full Tx path in the driver, required for IEEE1588 */ 198 port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS; 199 200 /* Configure the Ethernet device. */ 201 retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf); 202 if (retval != 0) 203 return retval; 204 205 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd); 206 if (retval != 0) 207 return retval; 208 209 /* Allocate and set up 1 RX queue per Ethernet port. */ 210 for (q = 0; q < rx_rings; q++) { 211 retval = rte_eth_rx_queue_setup(port, q, nb_rxd, 212 rte_eth_dev_socket_id(port), NULL, mbuf_pool); 213 214 if (retval < 0) 215 return retval; 216 } 217 218 /* Allocate and set up 1 TX queue per Ethernet port. */ 219 for (q = 0; q < tx_rings; q++) { 220 /* Setup txq_flags */ 221 struct rte_eth_txconf *txconf; 222 223 txconf = &dev_info.default_txconf; 224 txconf->txq_flags = ETH_TXQ_FLAGS_IGNORE; 225 txconf->offloads = port_conf.txmode.offloads; 226 227 retval = rte_eth_tx_queue_setup(port, q, nb_txd, 228 rte_eth_dev_socket_id(port), txconf); 229 if (retval < 0) 230 return retval; 231 } 232 233 /* Start the Ethernet port. */ 234 retval = rte_eth_dev_start(port); 235 if (retval < 0) 236 return retval; 237 238 /* Enable timesync timestamping for the Ethernet device */ 239 rte_eth_timesync_enable(port); 240 241 /* Enable RX in promiscuous mode for the Ethernet device. */ 242 rte_eth_promiscuous_enable(port); 243 244 return 0; 245 } 246 247 static void 248 print_clock_info(struct ptpv2_data_slave_ordinary *ptp_data) 249 { 250 int64_t nsec; 251 struct timespec net_time, sys_time; 252 253 printf("Master Clock id: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 254 ptp_data->master_clock_id.id[0], 255 ptp_data->master_clock_id.id[1], 256 ptp_data->master_clock_id.id[2], 257 ptp_data->master_clock_id.id[3], 258 ptp_data->master_clock_id.id[4], 259 ptp_data->master_clock_id.id[5], 260 ptp_data->master_clock_id.id[6], 261 ptp_data->master_clock_id.id[7]); 262 263 printf("\nT2 - Slave Clock. %lds %ldns", 264 (ptp_data->tstamp2.tv_sec), 265 (ptp_data->tstamp2.tv_nsec)); 266 267 printf("\nT1 - Master Clock. %lds %ldns ", 268 ptp_data->tstamp1.tv_sec, 269 (ptp_data->tstamp1.tv_nsec)); 270 271 printf("\nT3 - Slave Clock. %lds %ldns", 272 ptp_data->tstamp3.tv_sec, 273 (ptp_data->tstamp3.tv_nsec)); 274 275 printf("\nT4 - Master Clock. %lds %ldns ", 276 ptp_data->tstamp4.tv_sec, 277 (ptp_data->tstamp4.tv_nsec)); 278 279 printf("\nDelta between master and slave clocks:%"PRId64"ns\n", 280 ptp_data->delta); 281 282 clock_gettime(CLOCK_REALTIME, &sys_time); 283 rte_eth_timesync_read_time(ptp_data->current_ptp_port, &net_time); 284 285 time_t ts = net_time.tv_sec; 286 287 printf("\n\nComparison between Linux kernel Time and PTP:"); 288 289 printf("\nCurrent PTP Time: %.24s %.9ld ns", 290 ctime(&ts), net_time.tv_nsec); 291 292 nsec = (int64_t)timespec64_to_ns(&net_time) - 293 (int64_t)timespec64_to_ns(&sys_time); 294 ptp_data->new_adj = ns_to_timeval(nsec); 295 296 gettimeofday(&ptp_data->new_adj, NULL); 297 298 time_t tp = ptp_data->new_adj.tv_sec; 299 300 printf("\nCurrent SYS Time: %.24s %.6ld ns", 301 ctime(&tp), ptp_data->new_adj.tv_usec); 302 303 printf("\nDelta between PTP and Linux Kernel time:%"PRId64"ns\n", 304 nsec); 305 306 printf("[Ctrl+C to quit]\n"); 307 308 /* Clear screen and put cursor in column 1, row 1 */ 309 printf("\033[2J\033[1;1H"); 310 } 311 312 static int64_t 313 delta_eval(struct ptpv2_data_slave_ordinary *ptp_data) 314 { 315 int64_t delta; 316 uint64_t t1 = 0; 317 uint64_t t2 = 0; 318 uint64_t t3 = 0; 319 uint64_t t4 = 0; 320 321 t1 = timespec64_to_ns(&ptp_data->tstamp1); 322 t2 = timespec64_to_ns(&ptp_data->tstamp2); 323 t3 = timespec64_to_ns(&ptp_data->tstamp3); 324 t4 = timespec64_to_ns(&ptp_data->tstamp4); 325 326 delta = -((int64_t)((t2 - t1) - (t4 - t3))) / 2; 327 328 return delta; 329 } 330 331 /* 332 * Parse the PTP SYNC message. 333 */ 334 static void 335 parse_sync(struct ptpv2_data_slave_ordinary *ptp_data, uint16_t rx_tstamp_idx) 336 { 337 struct ptp_header *ptp_hdr; 338 339 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(ptp_data->m, char *) 340 + sizeof(struct ether_hdr)); 341 ptp_data->seqID_SYNC = rte_be_to_cpu_16(ptp_hdr->seq_id); 342 343 if (ptp_data->ptpset == 0) { 344 rte_memcpy(&ptp_data->master_clock_id, 345 &ptp_hdr->source_port_id.clock_id, 346 sizeof(struct clock_id)); 347 ptp_data->ptpset = 1; 348 } 349 350 if (memcmp(&ptp_hdr->source_port_id.clock_id, 351 &ptp_hdr->source_port_id.clock_id, 352 sizeof(struct clock_id)) == 0) { 353 354 if (ptp_data->ptpset == 1) 355 rte_eth_timesync_read_rx_timestamp(ptp_data->portid, 356 &ptp_data->tstamp2, rx_tstamp_idx); 357 } 358 359 } 360 361 /* 362 * Parse the PTP FOLLOWUP message and send DELAY_REQ to the master clock. 363 */ 364 static void 365 parse_fup(struct ptpv2_data_slave_ordinary *ptp_data) 366 { 367 struct ether_hdr *eth_hdr; 368 struct ptp_header *ptp_hdr; 369 struct clock_id *client_clkid; 370 struct ptp_message *ptp_msg; 371 struct rte_mbuf *created_pkt; 372 struct tstamp *origin_tstamp; 373 struct ether_addr eth_multicast = ether_multicast; 374 size_t pkt_size; 375 int wait_us; 376 struct rte_mbuf *m = ptp_data->m; 377 378 eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *); 379 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 380 + sizeof(struct ether_hdr)); 381 if (memcmp(&ptp_data->master_clock_id, 382 &ptp_hdr->source_port_id.clock_id, 383 sizeof(struct clock_id)) != 0) 384 return; 385 386 ptp_data->seqID_FOLLOWUP = rte_be_to_cpu_16(ptp_hdr->seq_id); 387 ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + 388 sizeof(struct ether_hdr)); 389 390 origin_tstamp = &ptp_msg->follow_up.precise_origin_tstamp; 391 ptp_data->tstamp1.tv_nsec = ntohl(origin_tstamp->ns); 392 ptp_data->tstamp1.tv_sec = 393 ((uint64_t)ntohl(origin_tstamp->sec_lsb)) | 394 (((uint64_t)ntohs(origin_tstamp->sec_msb)) << 32); 395 396 if (ptp_data->seqID_FOLLOWUP == ptp_data->seqID_SYNC) { 397 398 created_pkt = rte_pktmbuf_alloc(mbuf_pool); 399 pkt_size = sizeof(struct ether_hdr) + 400 sizeof(struct ptp_message); 401 created_pkt->data_len = pkt_size; 402 created_pkt->pkt_len = pkt_size; 403 eth_hdr = rte_pktmbuf_mtod(created_pkt, struct ether_hdr *); 404 rte_eth_macaddr_get(ptp_data->portid, ð_hdr->s_addr); 405 406 /* Set multicast address 01-1B-19-00-00-00. */ 407 ether_addr_copy(ð_multicast, ð_hdr->d_addr); 408 409 eth_hdr->ether_type = htons(PTP_PROTOCOL); 410 ptp_msg = (struct ptp_message *) 411 (rte_pktmbuf_mtod(created_pkt, char *) + 412 sizeof(struct ether_hdr)); 413 414 ptp_msg->delay_req.hdr.seq_id = htons(ptp_data->seqID_SYNC); 415 ptp_msg->delay_req.hdr.msg_type = DELAY_REQ; 416 ptp_msg->delay_req.hdr.ver = 2; 417 ptp_msg->delay_req.hdr.control = 1; 418 ptp_msg->delay_req.hdr.log_message_interval = 127; 419 420 /* Set up clock id. */ 421 client_clkid = 422 &ptp_msg->delay_req.hdr.source_port_id.clock_id; 423 424 client_clkid->id[0] = eth_hdr->s_addr.addr_bytes[0]; 425 client_clkid->id[1] = eth_hdr->s_addr.addr_bytes[1]; 426 client_clkid->id[2] = eth_hdr->s_addr.addr_bytes[2]; 427 client_clkid->id[3] = 0xFF; 428 client_clkid->id[4] = 0xFE; 429 client_clkid->id[5] = eth_hdr->s_addr.addr_bytes[3]; 430 client_clkid->id[6] = eth_hdr->s_addr.addr_bytes[4]; 431 client_clkid->id[7] = eth_hdr->s_addr.addr_bytes[5]; 432 433 rte_memcpy(&ptp_data->client_clock_id, 434 client_clkid, 435 sizeof(struct clock_id)); 436 437 /* Enable flag for hardware timestamping. */ 438 created_pkt->ol_flags |= PKT_TX_IEEE1588_TMST; 439 440 /*Read value from NIC to prevent latching with old value. */ 441 rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 442 &ptp_data->tstamp3); 443 444 /* Transmit the packet. */ 445 rte_eth_tx_burst(ptp_data->portid, 0, &created_pkt, 1); 446 447 wait_us = 0; 448 ptp_data->tstamp3.tv_nsec = 0; 449 ptp_data->tstamp3.tv_sec = 0; 450 451 /* Wait at least 1 us to read TX timestamp. */ 452 while ((rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 453 &ptp_data->tstamp3) < 0) && (wait_us < 1000)) { 454 rte_delay_us(1); 455 wait_us++; 456 } 457 } 458 } 459 460 /* 461 * Update the kernel time with the difference between it and the current NIC 462 * time. 463 */ 464 static inline void 465 update_kernel_time(void) 466 { 467 int64_t nsec; 468 struct timespec net_time, sys_time; 469 470 clock_gettime(CLOCK_REALTIME, &sys_time); 471 rte_eth_timesync_read_time(ptp_data.current_ptp_port, &net_time); 472 473 nsec = (int64_t)timespec64_to_ns(&net_time) - 474 (int64_t)timespec64_to_ns(&sys_time); 475 476 ptp_data.new_adj = ns_to_timeval(nsec); 477 478 /* 479 * If difference between kernel time and system time in NIC is too big 480 * (more than +/- 20 microseconds), use clock_settime to set directly 481 * the kernel time, as adjtime is better for small adjustments (takes 482 * longer to adjust the time). 483 */ 484 485 if (nsec > KERNEL_TIME_ADJUST_LIMIT || nsec < -KERNEL_TIME_ADJUST_LIMIT) 486 clock_settime(CLOCK_REALTIME, &net_time); 487 else 488 adjtime(&ptp_data.new_adj, 0); 489 490 491 } 492 493 /* 494 * Parse the DELAY_RESP message. 495 */ 496 static void 497 parse_drsp(struct ptpv2_data_slave_ordinary *ptp_data) 498 { 499 struct rte_mbuf *m = ptp_data->m; 500 struct ptp_message *ptp_msg; 501 struct tstamp *rx_tstamp; 502 uint16_t seq_id; 503 504 ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + 505 sizeof(struct ether_hdr)); 506 seq_id = rte_be_to_cpu_16(ptp_msg->delay_resp.hdr.seq_id); 507 if (memcmp(&ptp_data->client_clock_id, 508 &ptp_msg->delay_resp.req_port_id.clock_id, 509 sizeof(struct clock_id)) == 0) { 510 if (seq_id == ptp_data->seqID_FOLLOWUP) { 511 rx_tstamp = &ptp_msg->delay_resp.rx_tstamp; 512 ptp_data->tstamp4.tv_nsec = ntohl(rx_tstamp->ns); 513 ptp_data->tstamp4.tv_sec = 514 ((uint64_t)ntohl(rx_tstamp->sec_lsb)) | 515 (((uint64_t)ntohs(rx_tstamp->sec_msb)) << 32); 516 517 /* Evaluate the delta for adjustment. */ 518 ptp_data->delta = delta_eval(ptp_data); 519 520 rte_eth_timesync_adjust_time(ptp_data->portid, 521 ptp_data->delta); 522 523 ptp_data->current_ptp_port = ptp_data->portid; 524 525 /* Update kernel time if enabled in app parameters. */ 526 if (ptp_data->kernel_time_set == 1) 527 update_kernel_time(); 528 529 530 531 } 532 } 533 } 534 535 /* This function processes PTP packets, implementing slave PTP IEEE1588 L2 536 * functionality. 537 */ 538 static void 539 parse_ptp_frames(uint16_t portid, struct rte_mbuf *m) { 540 struct ptp_header *ptp_hdr; 541 struct ether_hdr *eth_hdr; 542 uint16_t eth_type; 543 544 eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *); 545 eth_type = rte_be_to_cpu_16(eth_hdr->ether_type); 546 547 if (eth_type == PTP_PROTOCOL) { 548 ptp_data.m = m; 549 ptp_data.portid = portid; 550 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 551 + sizeof(struct ether_hdr)); 552 553 switch (ptp_hdr->msg_type) { 554 case SYNC: 555 parse_sync(&ptp_data, m->timesync); 556 break; 557 case FOLLOW_UP: 558 parse_fup(&ptp_data); 559 break; 560 case DELAY_RESP: 561 parse_drsp(&ptp_data); 562 print_clock_info(&ptp_data); 563 break; 564 default: 565 break; 566 } 567 } 568 } 569 570 /* 571 * The lcore main. This is the main thread that does the work, reading from an 572 * input port and writing to an output port. 573 */ 574 static __attribute__((noreturn)) void 575 lcore_main(void) 576 { 577 uint16_t portid; 578 unsigned nb_rx; 579 struct rte_mbuf *m; 580 581 /* 582 * Check that the port is on the same NUMA node as the polling thread 583 * for best performance. 584 */ 585 printf("\nCore %u Waiting for SYNC packets. [Ctrl+C to quit]\n", 586 rte_lcore_id()); 587 588 /* Run until the application is quit or killed. */ 589 590 while (1) { 591 /* Read packet from RX queues. */ 592 for (portid = 0; portid < ptp_enabled_port_nb; portid++) { 593 594 portid = ptp_enabled_ports[portid]; 595 nb_rx = rte_eth_rx_burst(portid, 0, &m, 1); 596 597 if (likely(nb_rx == 0)) 598 continue; 599 600 if (m->ol_flags & PKT_RX_IEEE1588_PTP) 601 parse_ptp_frames(portid, m); 602 603 rte_pktmbuf_free(m); 604 } 605 } 606 } 607 608 static void 609 print_usage(const char *prgname) 610 { 611 printf("%s [EAL options] -- -p PORTMASK -T VALUE\n" 612 " -T VALUE: 0 - Disable, 1 - Enable Linux Clock" 613 " Synchronization (0 default)\n" 614 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 615 prgname); 616 } 617 618 static int 619 ptp_parse_portmask(const char *portmask) 620 { 621 char *end = NULL; 622 unsigned long pm; 623 624 /* Parse the hexadecimal string. */ 625 pm = strtoul(portmask, &end, 16); 626 627 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 628 return -1; 629 630 if (pm == 0) 631 return -1; 632 633 return pm; 634 } 635 636 static int 637 parse_ptp_kernel(const char *param) 638 { 639 char *end = NULL; 640 unsigned long pm; 641 642 /* Parse the hexadecimal string. */ 643 pm = strtoul(param, &end, 16); 644 645 if ((param[0] == '\0') || (end == NULL) || (*end != '\0')) 646 return -1; 647 if (pm == 0) 648 return 0; 649 650 return 1; 651 } 652 653 /* Parse the commandline arguments. */ 654 static int 655 ptp_parse_args(int argc, char **argv) 656 { 657 int opt, ret; 658 char **argvopt; 659 int option_index; 660 char *prgname = argv[0]; 661 static struct option lgopts[] = { {NULL, 0, 0, 0} }; 662 663 argvopt = argv; 664 665 while ((opt = getopt_long(argc, argvopt, "p:T:", 666 lgopts, &option_index)) != EOF) { 667 668 switch (opt) { 669 670 /* Portmask. */ 671 case 'p': 672 ptp_enabled_port_mask = ptp_parse_portmask(optarg); 673 if (ptp_enabled_port_mask == 0) { 674 printf("invalid portmask\n"); 675 print_usage(prgname); 676 return -1; 677 } 678 break; 679 /* Time synchronization. */ 680 case 'T': 681 ret = parse_ptp_kernel(optarg); 682 if (ret < 0) { 683 print_usage(prgname); 684 return -1; 685 } 686 687 ptp_data.kernel_time_set = ret; 688 break; 689 690 default: 691 print_usage(prgname); 692 return -1; 693 } 694 } 695 696 argv[optind-1] = prgname; 697 698 optind = 1; /* Reset getopt lib. */ 699 700 return 0; 701 } 702 703 /* 704 * The main function, which does initialization and calls the per-lcore 705 * functions. 706 */ 707 int 708 main(int argc, char *argv[]) 709 { 710 unsigned nb_ports; 711 712 uint16_t portid; 713 714 /* Initialize the Environment Abstraction Layer (EAL). */ 715 int ret = rte_eal_init(argc, argv); 716 717 if (ret < 0) 718 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n"); 719 720 memset(&ptp_data, '\0', sizeof(struct ptpv2_data_slave_ordinary)); 721 722 argc -= ret; 723 argv += ret; 724 725 ret = ptp_parse_args(argc, argv); 726 if (ret < 0) 727 rte_exit(EXIT_FAILURE, "Error with PTP initialization\n"); 728 729 /* Check that there is an even number of ports to send/receive on. */ 730 nb_ports = rte_eth_dev_count_avail(); 731 732 /* Creates a new mempool in memory to hold the mbufs. */ 733 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports, 734 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 735 736 if (mbuf_pool == NULL) 737 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); 738 739 /* Initialize all ports. */ 740 RTE_ETH_FOREACH_DEV(portid) { 741 if ((ptp_enabled_port_mask & (1 << portid)) != 0) { 742 if (port_init(portid, mbuf_pool) == 0) { 743 ptp_enabled_ports[ptp_enabled_port_nb] = portid; 744 ptp_enabled_port_nb++; 745 } else { 746 rte_exit(EXIT_FAILURE, 747 "Cannot init port %"PRIu8 "\n", 748 portid); 749 } 750 } else 751 printf("Skipping disabled port %u\n", portid); 752 } 753 754 if (ptp_enabled_port_nb == 0) { 755 rte_exit(EXIT_FAILURE, 756 "All available ports are disabled." 757 " Please set portmask.\n"); 758 } 759 760 if (rte_lcore_count() > 1) 761 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n"); 762 763 /* Call lcore_main on the master core only. */ 764 lcore_main(); 765 766 return 0; 767 } 768