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 = RTE_ETHER_MAX_LEN, 53 }, 54 }; 55 56 static const struct rte_ether_addr ether_multicast = { 57 .addr_bytes = {0x01, 0x1b, 0x19, 0x0, 0x0, 0x0} 58 }; 59 60 /* Structs used for PTP handling. */ 61 struct tstamp { 62 uint16_t sec_msb; 63 uint32_t sec_lsb; 64 uint32_t ns; 65 } __rte_packed; 66 67 struct clock_id { 68 uint8_t id[8]; 69 }; 70 71 struct port_id { 72 struct clock_id clock_id; 73 uint16_t port_number; 74 } __rte_packed; 75 76 struct ptp_header { 77 uint8_t msg_type; 78 uint8_t ver; 79 uint16_t message_length; 80 uint8_t domain_number; 81 uint8_t reserved1; 82 uint8_t flag_field[2]; 83 int64_t correction; 84 uint32_t reserved2; 85 struct port_id source_port_id; 86 uint16_t seq_id; 87 uint8_t control; 88 int8_t log_message_interval; 89 } __rte_packed; 90 91 struct sync_msg { 92 struct ptp_header hdr; 93 struct tstamp origin_tstamp; 94 } __rte_packed; 95 96 struct follow_up_msg { 97 struct ptp_header hdr; 98 struct tstamp precise_origin_tstamp; 99 uint8_t suffix[0]; 100 } __rte_packed; 101 102 struct delay_req_msg { 103 struct ptp_header hdr; 104 struct tstamp origin_tstamp; 105 } __rte_packed; 106 107 struct delay_resp_msg { 108 struct ptp_header hdr; 109 struct tstamp rx_tstamp; 110 struct port_id req_port_id; 111 uint8_t suffix[0]; 112 } __rte_packed; 113 114 struct ptp_message { 115 union { 116 struct ptp_header header; 117 struct sync_msg sync; 118 struct delay_req_msg delay_req; 119 struct follow_up_msg follow_up; 120 struct delay_resp_msg delay_resp; 121 } __rte_packed; 122 }; 123 124 struct ptpv2_data_slave_ordinary { 125 struct rte_mbuf *m; 126 struct timespec tstamp1; 127 struct timespec tstamp2; 128 struct timespec tstamp3; 129 struct timespec tstamp4; 130 struct clock_id client_clock_id; 131 struct clock_id master_clock_id; 132 struct timeval new_adj; 133 int64_t delta; 134 uint16_t portid; 135 uint16_t seqID_SYNC; 136 uint16_t seqID_FOLLOWUP; 137 uint8_t ptpset; 138 uint8_t kernel_time_set; 139 uint16_t current_ptp_port; 140 }; 141 142 static struct ptpv2_data_slave_ordinary ptp_data; 143 144 static inline uint64_t timespec64_to_ns(const struct timespec *ts) 145 { 146 return ((uint64_t) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec; 147 } 148 149 static struct timeval 150 ns_to_timeval(int64_t nsec) 151 { 152 struct timespec t_spec = {0, 0}; 153 struct timeval t_eval = {0, 0}; 154 int32_t rem; 155 156 if (nsec == 0) 157 return t_eval; 158 rem = nsec % NSEC_PER_SEC; 159 t_spec.tv_sec = nsec / NSEC_PER_SEC; 160 161 if (rem < 0) { 162 t_spec.tv_sec--; 163 rem += NSEC_PER_SEC; 164 } 165 166 t_spec.tv_nsec = rem; 167 t_eval.tv_sec = t_spec.tv_sec; 168 t_eval.tv_usec = t_spec.tv_nsec / 1000; 169 170 return t_eval; 171 } 172 173 /* 174 * Initializes a given port using global settings and with the RX buffers 175 * coming from the mbuf_pool passed as a parameter. 176 */ 177 static inline int 178 port_init(uint16_t port, struct rte_mempool *mbuf_pool) 179 { 180 struct rte_eth_dev_info dev_info; 181 struct rte_eth_conf port_conf = port_conf_default; 182 const uint16_t rx_rings = 1; 183 const uint16_t tx_rings = 1; 184 int retval; 185 uint16_t q; 186 uint16_t nb_rxd = RX_RING_SIZE; 187 uint16_t nb_txd = TX_RING_SIZE; 188 189 if (!rte_eth_dev_is_valid_port(port)) 190 return -1; 191 192 retval = rte_eth_dev_info_get(port, &dev_info); 193 if (retval != 0) { 194 printf("Error during getting device (port %u) info: %s\n", 195 port, strerror(-retval)); 196 197 return retval; 198 } 199 200 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE) 201 port_conf.txmode.offloads |= 202 DEV_TX_OFFLOAD_MBUF_FAST_FREE; 203 /* Force full Tx path in the driver, required for IEEE1588 */ 204 port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS; 205 206 /* Configure the Ethernet device. */ 207 retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf); 208 if (retval != 0) 209 return retval; 210 211 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd); 212 if (retval != 0) 213 return retval; 214 215 /* Allocate and set up 1 RX queue per Ethernet port. */ 216 for (q = 0; q < rx_rings; q++) { 217 retval = rte_eth_rx_queue_setup(port, q, nb_rxd, 218 rte_eth_dev_socket_id(port), NULL, mbuf_pool); 219 220 if (retval < 0) 221 return retval; 222 } 223 224 /* Allocate and set up 1 TX queue per Ethernet port. */ 225 for (q = 0; q < tx_rings; q++) { 226 struct rte_eth_txconf *txconf; 227 228 txconf = &dev_info.default_txconf; 229 txconf->offloads = port_conf.txmode.offloads; 230 231 retval = rte_eth_tx_queue_setup(port, q, nb_txd, 232 rte_eth_dev_socket_id(port), txconf); 233 if (retval < 0) 234 return retval; 235 } 236 237 /* Start the Ethernet port. */ 238 retval = rte_eth_dev_start(port); 239 if (retval < 0) 240 return retval; 241 242 /* Enable timesync timestamping for the Ethernet device */ 243 retval = rte_eth_timesync_enable(port); 244 if (retval < 0) { 245 printf("Timesync enable failed: %d\n", retval); 246 return retval; 247 } 248 249 /* Enable RX in promiscuous mode for the Ethernet device. */ 250 retval = rte_eth_promiscuous_enable(port); 251 if (retval != 0) { 252 printf("Promiscuous mode enable failed: %s\n", 253 rte_strerror(-retval)); 254 return retval; 255 } 256 257 return 0; 258 } 259 260 static void 261 print_clock_info(struct ptpv2_data_slave_ordinary *ptp_data) 262 { 263 int64_t nsec; 264 struct timespec net_time, sys_time; 265 266 printf("Master Clock id: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 267 ptp_data->master_clock_id.id[0], 268 ptp_data->master_clock_id.id[1], 269 ptp_data->master_clock_id.id[2], 270 ptp_data->master_clock_id.id[3], 271 ptp_data->master_clock_id.id[4], 272 ptp_data->master_clock_id.id[5], 273 ptp_data->master_clock_id.id[6], 274 ptp_data->master_clock_id.id[7]); 275 276 printf("\nT2 - Slave Clock. %lds %ldns", 277 (ptp_data->tstamp2.tv_sec), 278 (ptp_data->tstamp2.tv_nsec)); 279 280 printf("\nT1 - Master Clock. %lds %ldns ", 281 ptp_data->tstamp1.tv_sec, 282 (ptp_data->tstamp1.tv_nsec)); 283 284 printf("\nT3 - Slave Clock. %lds %ldns", 285 ptp_data->tstamp3.tv_sec, 286 (ptp_data->tstamp3.tv_nsec)); 287 288 printf("\nT4 - Master Clock. %lds %ldns ", 289 ptp_data->tstamp4.tv_sec, 290 (ptp_data->tstamp4.tv_nsec)); 291 292 printf("\nDelta between master and slave clocks:%"PRId64"ns\n", 293 ptp_data->delta); 294 295 clock_gettime(CLOCK_REALTIME, &sys_time); 296 rte_eth_timesync_read_time(ptp_data->current_ptp_port, &net_time); 297 298 time_t ts = net_time.tv_sec; 299 300 printf("\n\nComparison between Linux kernel Time and PTP:"); 301 302 printf("\nCurrent PTP Time: %.24s %.9ld ns", 303 ctime(&ts), net_time.tv_nsec); 304 305 nsec = (int64_t)timespec64_to_ns(&net_time) - 306 (int64_t)timespec64_to_ns(&sys_time); 307 ptp_data->new_adj = ns_to_timeval(nsec); 308 309 gettimeofday(&ptp_data->new_adj, NULL); 310 311 time_t tp = ptp_data->new_adj.tv_sec; 312 313 printf("\nCurrent SYS Time: %.24s %.6ld ns", 314 ctime(&tp), ptp_data->new_adj.tv_usec); 315 316 printf("\nDelta between PTP and Linux Kernel time:%"PRId64"ns\n", 317 nsec); 318 319 printf("[Ctrl+C to quit]\n"); 320 321 /* Clear screen and put cursor in column 1, row 1 */ 322 printf("\033[2J\033[1;1H"); 323 } 324 325 static int64_t 326 delta_eval(struct ptpv2_data_slave_ordinary *ptp_data) 327 { 328 int64_t delta; 329 uint64_t t1 = 0; 330 uint64_t t2 = 0; 331 uint64_t t3 = 0; 332 uint64_t t4 = 0; 333 334 t1 = timespec64_to_ns(&ptp_data->tstamp1); 335 t2 = timespec64_to_ns(&ptp_data->tstamp2); 336 t3 = timespec64_to_ns(&ptp_data->tstamp3); 337 t4 = timespec64_to_ns(&ptp_data->tstamp4); 338 339 delta = -((int64_t)((t2 - t1) - (t4 - t3))) / 2; 340 341 return delta; 342 } 343 344 /* 345 * Parse the PTP SYNC message. 346 */ 347 static void 348 parse_sync(struct ptpv2_data_slave_ordinary *ptp_data, uint16_t rx_tstamp_idx) 349 { 350 struct ptp_header *ptp_hdr; 351 352 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(ptp_data->m, char *) 353 + sizeof(struct rte_ether_hdr)); 354 ptp_data->seqID_SYNC = rte_be_to_cpu_16(ptp_hdr->seq_id); 355 356 if (ptp_data->ptpset == 0) { 357 rte_memcpy(&ptp_data->master_clock_id, 358 &ptp_hdr->source_port_id.clock_id, 359 sizeof(struct clock_id)); 360 ptp_data->ptpset = 1; 361 } 362 363 if (memcmp(&ptp_hdr->source_port_id.clock_id, 364 &ptp_hdr->source_port_id.clock_id, 365 sizeof(struct clock_id)) == 0) { 366 367 if (ptp_data->ptpset == 1) 368 rte_eth_timesync_read_rx_timestamp(ptp_data->portid, 369 &ptp_data->tstamp2, rx_tstamp_idx); 370 } 371 372 } 373 374 /* 375 * Parse the PTP FOLLOWUP message and send DELAY_REQ to the main clock. 376 */ 377 static void 378 parse_fup(struct ptpv2_data_slave_ordinary *ptp_data) 379 { 380 struct rte_ether_hdr *eth_hdr; 381 struct rte_ether_addr eth_addr; 382 struct ptp_header *ptp_hdr; 383 struct clock_id *client_clkid; 384 struct ptp_message *ptp_msg; 385 struct rte_mbuf *created_pkt; 386 struct tstamp *origin_tstamp; 387 struct rte_ether_addr eth_multicast = ether_multicast; 388 size_t pkt_size; 389 int wait_us; 390 struct rte_mbuf *m = ptp_data->m; 391 int ret; 392 393 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 394 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 395 + sizeof(struct rte_ether_hdr)); 396 if (memcmp(&ptp_data->master_clock_id, 397 &ptp_hdr->source_port_id.clock_id, 398 sizeof(struct clock_id)) != 0) 399 return; 400 401 ptp_data->seqID_FOLLOWUP = rte_be_to_cpu_16(ptp_hdr->seq_id); 402 ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + 403 sizeof(struct rte_ether_hdr)); 404 405 origin_tstamp = &ptp_msg->follow_up.precise_origin_tstamp; 406 ptp_data->tstamp1.tv_nsec = ntohl(origin_tstamp->ns); 407 ptp_data->tstamp1.tv_sec = 408 ((uint64_t)ntohl(origin_tstamp->sec_lsb)) | 409 (((uint64_t)ntohs(origin_tstamp->sec_msb)) << 32); 410 411 if (ptp_data->seqID_FOLLOWUP == ptp_data->seqID_SYNC) { 412 ret = rte_eth_macaddr_get(ptp_data->portid, ð_addr); 413 if (ret != 0) { 414 printf("\nCore %u: port %u failed to get MAC address: %s\n", 415 rte_lcore_id(), ptp_data->portid, 416 rte_strerror(-ret)); 417 return; 418 } 419 420 created_pkt = rte_pktmbuf_alloc(mbuf_pool); 421 pkt_size = sizeof(struct rte_ether_hdr) + 422 sizeof(struct ptp_message); 423 created_pkt->data_len = pkt_size; 424 created_pkt->pkt_len = pkt_size; 425 eth_hdr = rte_pktmbuf_mtod(created_pkt, struct rte_ether_hdr *); 426 rte_ether_addr_copy(ð_addr, ð_hdr->s_addr); 427 428 /* Set multicast address 01-1B-19-00-00-00. */ 429 rte_ether_addr_copy(ð_multicast, ð_hdr->d_addr); 430 431 eth_hdr->ether_type = htons(PTP_PROTOCOL); 432 ptp_msg = (struct ptp_message *) 433 (rte_pktmbuf_mtod(created_pkt, char *) + 434 sizeof(struct rte_ether_hdr)); 435 436 ptp_msg->delay_req.hdr.seq_id = htons(ptp_data->seqID_SYNC); 437 ptp_msg->delay_req.hdr.msg_type = DELAY_REQ; 438 ptp_msg->delay_req.hdr.ver = 2; 439 ptp_msg->delay_req.hdr.control = 1; 440 ptp_msg->delay_req.hdr.log_message_interval = 127; 441 ptp_msg->delay_req.hdr.message_length = 442 htons(sizeof(struct delay_req_msg)); 443 ptp_msg->delay_req.hdr.domain_number = ptp_hdr->domain_number; 444 445 /* Set up clock id. */ 446 client_clkid = 447 &ptp_msg->delay_req.hdr.source_port_id.clock_id; 448 449 client_clkid->id[0] = eth_hdr->s_addr.addr_bytes[0]; 450 client_clkid->id[1] = eth_hdr->s_addr.addr_bytes[1]; 451 client_clkid->id[2] = eth_hdr->s_addr.addr_bytes[2]; 452 client_clkid->id[3] = 0xFF; 453 client_clkid->id[4] = 0xFE; 454 client_clkid->id[5] = eth_hdr->s_addr.addr_bytes[3]; 455 client_clkid->id[6] = eth_hdr->s_addr.addr_bytes[4]; 456 client_clkid->id[7] = eth_hdr->s_addr.addr_bytes[5]; 457 458 rte_memcpy(&ptp_data->client_clock_id, 459 client_clkid, 460 sizeof(struct clock_id)); 461 462 /* Enable flag for hardware timestamping. */ 463 created_pkt->ol_flags |= PKT_TX_IEEE1588_TMST; 464 465 /*Read value from NIC to prevent latching with old value. */ 466 rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 467 &ptp_data->tstamp3); 468 469 /* Transmit the packet. */ 470 rte_eth_tx_burst(ptp_data->portid, 0, &created_pkt, 1); 471 472 wait_us = 0; 473 ptp_data->tstamp3.tv_nsec = 0; 474 ptp_data->tstamp3.tv_sec = 0; 475 476 /* Wait at least 1 us to read TX timestamp. */ 477 while ((rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 478 &ptp_data->tstamp3) < 0) && (wait_us < 1000)) { 479 rte_delay_us(1); 480 wait_us++; 481 } 482 } 483 } 484 485 /* 486 * Update the kernel time with the difference between it and the current NIC 487 * time. 488 */ 489 static inline void 490 update_kernel_time(void) 491 { 492 int64_t nsec; 493 struct timespec net_time, sys_time; 494 495 clock_gettime(CLOCK_REALTIME, &sys_time); 496 rte_eth_timesync_read_time(ptp_data.current_ptp_port, &net_time); 497 498 nsec = (int64_t)timespec64_to_ns(&net_time) - 499 (int64_t)timespec64_to_ns(&sys_time); 500 501 ptp_data.new_adj = ns_to_timeval(nsec); 502 503 /* 504 * If difference between kernel time and system time in NIC is too big 505 * (more than +/- 20 microseconds), use clock_settime to set directly 506 * the kernel time, as adjtime is better for small adjustments (takes 507 * longer to adjust the time). 508 */ 509 510 if (nsec > KERNEL_TIME_ADJUST_LIMIT || nsec < -KERNEL_TIME_ADJUST_LIMIT) 511 clock_settime(CLOCK_REALTIME, &net_time); 512 else 513 adjtime(&ptp_data.new_adj, 0); 514 515 516 } 517 518 /* 519 * Parse the DELAY_RESP message. 520 */ 521 static void 522 parse_drsp(struct ptpv2_data_slave_ordinary *ptp_data) 523 { 524 struct rte_mbuf *m = ptp_data->m; 525 struct ptp_message *ptp_msg; 526 struct tstamp *rx_tstamp; 527 uint16_t seq_id; 528 529 ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + 530 sizeof(struct rte_ether_hdr)); 531 seq_id = rte_be_to_cpu_16(ptp_msg->delay_resp.hdr.seq_id); 532 if (memcmp(&ptp_data->client_clock_id, 533 &ptp_msg->delay_resp.req_port_id.clock_id, 534 sizeof(struct clock_id)) == 0) { 535 if (seq_id == ptp_data->seqID_FOLLOWUP) { 536 rx_tstamp = &ptp_msg->delay_resp.rx_tstamp; 537 ptp_data->tstamp4.tv_nsec = ntohl(rx_tstamp->ns); 538 ptp_data->tstamp4.tv_sec = 539 ((uint64_t)ntohl(rx_tstamp->sec_lsb)) | 540 (((uint64_t)ntohs(rx_tstamp->sec_msb)) << 32); 541 542 /* Evaluate the delta for adjustment. */ 543 ptp_data->delta = delta_eval(ptp_data); 544 545 rte_eth_timesync_adjust_time(ptp_data->portid, 546 ptp_data->delta); 547 548 ptp_data->current_ptp_port = ptp_data->portid; 549 550 /* Update kernel time if enabled in app parameters. */ 551 if (ptp_data->kernel_time_set == 1) 552 update_kernel_time(); 553 554 555 556 } 557 } 558 } 559 560 /* This function processes PTP packets, implementing slave PTP IEEE1588 L2 561 * functionality. 562 */ 563 static void 564 parse_ptp_frames(uint16_t portid, struct rte_mbuf *m) { 565 struct ptp_header *ptp_hdr; 566 struct rte_ether_hdr *eth_hdr; 567 uint16_t eth_type; 568 569 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 570 eth_type = rte_be_to_cpu_16(eth_hdr->ether_type); 571 572 if (eth_type == PTP_PROTOCOL) { 573 ptp_data.m = m; 574 ptp_data.portid = portid; 575 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 576 + sizeof(struct rte_ether_hdr)); 577 578 switch (ptp_hdr->msg_type) { 579 case SYNC: 580 parse_sync(&ptp_data, m->timesync); 581 break; 582 case FOLLOW_UP: 583 parse_fup(&ptp_data); 584 break; 585 case DELAY_RESP: 586 parse_drsp(&ptp_data); 587 print_clock_info(&ptp_data); 588 break; 589 default: 590 break; 591 } 592 } 593 } 594 595 /* 596 * The lcore main. This is the main thread that does the work, reading from an 597 * input port and writing to an output port. 598 */ 599 static __rte_noreturn void 600 lcore_main(void) 601 { 602 uint16_t portid; 603 unsigned nb_rx; 604 struct rte_mbuf *m; 605 606 /* 607 * Check that the port is on the same NUMA node as the polling thread 608 * for best performance. 609 */ 610 printf("\nCore %u Waiting for SYNC packets. [Ctrl+C to quit]\n", 611 rte_lcore_id()); 612 613 /* Run until the application is quit or killed. */ 614 615 while (1) { 616 /* Read packet from RX queues. */ 617 for (portid = 0; portid < ptp_enabled_port_nb; portid++) { 618 619 portid = ptp_enabled_ports[portid]; 620 nb_rx = rte_eth_rx_burst(portid, 0, &m, 1); 621 622 if (likely(nb_rx == 0)) 623 continue; 624 625 if (m->ol_flags & PKT_RX_IEEE1588_PTP) 626 parse_ptp_frames(portid, m); 627 628 rte_pktmbuf_free(m); 629 } 630 } 631 } 632 633 static void 634 print_usage(const char *prgname) 635 { 636 printf("%s [EAL options] -- -p PORTMASK -T VALUE\n" 637 " -T VALUE: 0 - Disable, 1 - Enable Linux Clock" 638 " Synchronization (0 default)\n" 639 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 640 prgname); 641 } 642 643 static int 644 ptp_parse_portmask(const char *portmask) 645 { 646 char *end = NULL; 647 unsigned long pm; 648 649 /* Parse the hexadecimal string. */ 650 pm = strtoul(portmask, &end, 16); 651 652 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 653 return 0; 654 655 return pm; 656 } 657 658 static int 659 parse_ptp_kernel(const char *param) 660 { 661 char *end = NULL; 662 unsigned long pm; 663 664 /* Parse the hexadecimal string. */ 665 pm = strtoul(param, &end, 16); 666 667 if ((param[0] == '\0') || (end == NULL) || (*end != '\0')) 668 return -1; 669 if (pm == 0) 670 return 0; 671 672 return 1; 673 } 674 675 /* Parse the commandline arguments. */ 676 static int 677 ptp_parse_args(int argc, char **argv) 678 { 679 int opt, ret; 680 char **argvopt; 681 int option_index; 682 char *prgname = argv[0]; 683 static struct option lgopts[] = { {NULL, 0, 0, 0} }; 684 685 argvopt = argv; 686 687 while ((opt = getopt_long(argc, argvopt, "p:T:", 688 lgopts, &option_index)) != EOF) { 689 690 switch (opt) { 691 692 /* Portmask. */ 693 case 'p': 694 ptp_enabled_port_mask = ptp_parse_portmask(optarg); 695 if (ptp_enabled_port_mask == 0) { 696 printf("invalid portmask\n"); 697 print_usage(prgname); 698 return -1; 699 } 700 break; 701 /* Time synchronization. */ 702 case 'T': 703 ret = parse_ptp_kernel(optarg); 704 if (ret < 0) { 705 print_usage(prgname); 706 return -1; 707 } 708 709 ptp_data.kernel_time_set = ret; 710 break; 711 712 default: 713 print_usage(prgname); 714 return -1; 715 } 716 } 717 718 argv[optind-1] = prgname; 719 720 optind = 1; /* Reset getopt lib. */ 721 722 return 0; 723 } 724 725 /* 726 * The main function, which does initialization and calls the per-lcore 727 * functions. 728 */ 729 int 730 main(int argc, char *argv[]) 731 { 732 unsigned nb_ports; 733 734 uint16_t portid; 735 736 /* Initialize the Environment Abstraction Layer (EAL). */ 737 int ret = rte_eal_init(argc, argv); 738 739 if (ret < 0) 740 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n"); 741 742 memset(&ptp_data, '\0', sizeof(struct ptpv2_data_slave_ordinary)); 743 744 argc -= ret; 745 argv += ret; 746 747 ret = ptp_parse_args(argc, argv); 748 if (ret < 0) 749 rte_exit(EXIT_FAILURE, "Error with PTP initialization\n"); 750 751 /* Check that there is an even number of ports to send/receive on. */ 752 nb_ports = rte_eth_dev_count_avail(); 753 754 /* Creates a new mempool in memory to hold the mbufs. */ 755 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports, 756 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 757 758 if (mbuf_pool == NULL) 759 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); 760 761 /* Initialize all ports. */ 762 RTE_ETH_FOREACH_DEV(portid) { 763 if ((ptp_enabled_port_mask & (1 << portid)) != 0) { 764 if (port_init(portid, mbuf_pool) == 0) { 765 ptp_enabled_ports[ptp_enabled_port_nb] = portid; 766 ptp_enabled_port_nb++; 767 } else { 768 rte_exit(EXIT_FAILURE, 769 "Cannot init port %"PRIu8 "\n", 770 portid); 771 } 772 } else 773 printf("Skipping disabled port %u\n", portid); 774 } 775 776 if (ptp_enabled_port_nb == 0) { 777 rte_exit(EXIT_FAILURE, 778 "All available ports are disabled." 779 " Please set portmask.\n"); 780 } 781 782 if (rte_lcore_count() > 1) 783 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n"); 784 785 /* Call lcore_main on the main core only. */ 786 lcore_main(); 787 788 return 0; 789 } 790