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_ether_addr ether_multicast = { 51 .addr_bytes = {0x01, 0x1b, 0x19, 0x0, 0x0, 0x0} 52 }; 53 54 /* Structs used for PTP handling. */ 55 struct tstamp { 56 uint16_t sec_msb; 57 uint32_t sec_lsb; 58 uint32_t ns; 59 } __rte_packed; 60 61 struct clock_id { 62 uint8_t id[8]; 63 }; 64 65 struct port_id { 66 struct clock_id clock_id; 67 uint16_t port_number; 68 } __rte_packed; 69 70 struct ptp_header { 71 uint8_t msg_type; 72 uint8_t ver; 73 uint16_t message_length; 74 uint8_t domain_number; 75 uint8_t reserved1; 76 uint8_t flag_field[2]; 77 int64_t correction; 78 uint32_t reserved2; 79 struct port_id source_port_id; 80 uint16_t seq_id; 81 uint8_t control; 82 int8_t log_message_interval; 83 } __rte_packed; 84 85 struct sync_msg { 86 struct ptp_header hdr; 87 struct tstamp origin_tstamp; 88 } __rte_packed; 89 90 struct follow_up_msg { 91 struct ptp_header hdr; 92 struct tstamp precise_origin_tstamp; 93 uint8_t suffix[0]; 94 } __rte_packed; 95 96 struct delay_req_msg { 97 struct ptp_header hdr; 98 struct tstamp origin_tstamp; 99 } __rte_packed; 100 101 struct delay_resp_msg { 102 struct ptp_header hdr; 103 struct tstamp rx_tstamp; 104 struct port_id req_port_id; 105 uint8_t suffix[0]; 106 } __rte_packed; 107 108 struct ptp_message { 109 union { 110 struct ptp_header header; 111 struct sync_msg sync; 112 struct delay_req_msg delay_req; 113 struct follow_up_msg follow_up; 114 struct delay_resp_msg delay_resp; 115 } __rte_packed; 116 }; 117 118 struct ptpv2_data_slave_ordinary { 119 struct rte_mbuf *m; 120 struct timespec tstamp1; 121 struct timespec tstamp2; 122 struct timespec tstamp3; 123 struct timespec tstamp4; 124 struct clock_id client_clock_id; 125 struct clock_id master_clock_id; 126 struct timeval new_adj; 127 int64_t delta; 128 uint16_t portid; 129 uint16_t seqID_SYNC; 130 uint16_t seqID_FOLLOWUP; 131 uint8_t ptpset; 132 uint8_t kernel_time_set; 133 uint16_t current_ptp_port; 134 }; 135 136 static struct ptpv2_data_slave_ordinary ptp_data; 137 138 static inline uint64_t timespec64_to_ns(const struct timespec *ts) 139 { 140 return ((uint64_t) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec; 141 } 142 143 static struct timeval 144 ns_to_timeval(int64_t nsec) 145 { 146 struct timespec t_spec = {0, 0}; 147 struct timeval t_eval = {0, 0}; 148 int32_t rem; 149 150 if (nsec == 0) 151 return t_eval; 152 rem = nsec % NSEC_PER_SEC; 153 t_spec.tv_sec = nsec / NSEC_PER_SEC; 154 155 if (rem < 0) { 156 t_spec.tv_sec--; 157 rem += NSEC_PER_SEC; 158 } 159 160 t_spec.tv_nsec = rem; 161 t_eval.tv_sec = t_spec.tv_sec; 162 t_eval.tv_usec = t_spec.tv_nsec / 1000; 163 164 return t_eval; 165 } 166 167 /* 168 * Initializes a given port using global settings and with the RX buffers 169 * coming from the mbuf_pool passed as a parameter. 170 */ 171 static inline int 172 port_init(uint16_t port, struct rte_mempool *mbuf_pool) 173 { 174 struct rte_eth_dev_info dev_info; 175 struct rte_eth_conf port_conf; 176 const uint16_t rx_rings = 1; 177 const uint16_t tx_rings = 1; 178 int retval; 179 uint16_t q; 180 uint16_t nb_rxd = RX_RING_SIZE; 181 uint16_t nb_txd = TX_RING_SIZE; 182 183 if (!rte_eth_dev_is_valid_port(port)) 184 return -1; 185 186 memset(&port_conf, 0, sizeof(struct rte_eth_conf)); 187 188 retval = rte_eth_dev_info_get(port, &dev_info); 189 if (retval != 0) { 190 printf("Error during getting device (port %u) info: %s\n", 191 port, strerror(-retval)); 192 193 return retval; 194 } 195 196 if (dev_info.rx_offload_capa & RTE_ETH_RX_OFFLOAD_TIMESTAMP) 197 port_conf.rxmode.offloads |= RTE_ETH_RX_OFFLOAD_TIMESTAMP; 198 199 if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) 200 port_conf.txmode.offloads |= 201 RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE; 202 /* Force full Tx path in the driver, required for IEEE1588 */ 203 port_conf.txmode.offloads |= RTE_ETH_TX_OFFLOAD_MULTI_SEGS; 204 205 /* Configure the Ethernet device. */ 206 retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf); 207 if (retval != 0) 208 return retval; 209 210 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd); 211 if (retval != 0) 212 return retval; 213 214 /* Allocate and set up 1 RX queue per Ethernet port. */ 215 for (q = 0; q < rx_rings; q++) { 216 struct rte_eth_rxconf *rxconf; 217 218 rxconf = &dev_info.default_rxconf; 219 rxconf->offloads = port_conf.rxmode.offloads; 220 221 retval = rte_eth_rx_queue_setup(port, q, nb_rxd, 222 rte_eth_dev_socket_id(port), rxconf, mbuf_pool); 223 224 if (retval < 0) 225 return retval; 226 } 227 228 /* Allocate and set up 1 TX queue per Ethernet port. */ 229 for (q = 0; q < tx_rings; q++) { 230 struct rte_eth_txconf *txconf; 231 232 txconf = &dev_info.default_txconf; 233 txconf->offloads = port_conf.txmode.offloads; 234 235 retval = rte_eth_tx_queue_setup(port, q, nb_txd, 236 rte_eth_dev_socket_id(port), txconf); 237 if (retval < 0) 238 return retval; 239 } 240 241 /* Start the Ethernet port. */ 242 retval = rte_eth_dev_start(port); 243 if (retval < 0) 244 return retval; 245 246 /* Enable timesync timestamping for the Ethernet device */ 247 retval = rte_eth_timesync_enable(port); 248 if (retval < 0) { 249 printf("Timesync enable failed: %d\n", retval); 250 return retval; 251 } 252 253 /* Enable RX in promiscuous mode for the Ethernet device. */ 254 retval = rte_eth_promiscuous_enable(port); 255 if (retval != 0) { 256 printf("Promiscuous mode enable failed: %s\n", 257 rte_strerror(-retval)); 258 return retval; 259 } 260 261 return 0; 262 } 263 264 static void 265 print_clock_info(struct ptpv2_data_slave_ordinary *ptp_data) 266 { 267 int64_t nsec; 268 struct timespec net_time, sys_time; 269 270 printf("Master Clock id: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 271 ptp_data->master_clock_id.id[0], 272 ptp_data->master_clock_id.id[1], 273 ptp_data->master_clock_id.id[2], 274 ptp_data->master_clock_id.id[3], 275 ptp_data->master_clock_id.id[4], 276 ptp_data->master_clock_id.id[5], 277 ptp_data->master_clock_id.id[6], 278 ptp_data->master_clock_id.id[7]); 279 280 printf("\nT2 - Slave Clock. %lds %ldns", 281 (ptp_data->tstamp2.tv_sec), 282 (ptp_data->tstamp2.tv_nsec)); 283 284 printf("\nT1 - Master Clock. %lds %ldns ", 285 ptp_data->tstamp1.tv_sec, 286 (ptp_data->tstamp1.tv_nsec)); 287 288 printf("\nT3 - Slave Clock. %lds %ldns", 289 ptp_data->tstamp3.tv_sec, 290 (ptp_data->tstamp3.tv_nsec)); 291 292 printf("\nT4 - Master Clock. %lds %ldns ", 293 ptp_data->tstamp4.tv_sec, 294 (ptp_data->tstamp4.tv_nsec)); 295 296 printf("\nDelta between master and slave clocks:%"PRId64"ns\n", 297 ptp_data->delta); 298 299 clock_gettime(CLOCK_REALTIME, &sys_time); 300 rte_eth_timesync_read_time(ptp_data->current_ptp_port, &net_time); 301 302 time_t ts = net_time.tv_sec; 303 304 printf("\n\nComparison between Linux kernel Time and PTP:"); 305 306 printf("\nCurrent PTP Time: %.24s %.9ld ns", 307 ctime(&ts), net_time.tv_nsec); 308 309 nsec = (int64_t)timespec64_to_ns(&net_time) - 310 (int64_t)timespec64_to_ns(&sys_time); 311 ptp_data->new_adj = ns_to_timeval(nsec); 312 313 gettimeofday(&ptp_data->new_adj, NULL); 314 315 time_t tp = ptp_data->new_adj.tv_sec; 316 317 printf("\nCurrent SYS Time: %.24s %.6ld ns", 318 ctime(&tp), ptp_data->new_adj.tv_usec); 319 320 printf("\nDelta between PTP and Linux Kernel time:%"PRId64"ns\n", 321 nsec); 322 323 printf("[Ctrl+C to quit]\n"); 324 325 /* Clear screen and put cursor in column 1, row 1 */ 326 printf("\033[2J\033[1;1H"); 327 } 328 329 static int64_t 330 delta_eval(struct ptpv2_data_slave_ordinary *ptp_data) 331 { 332 int64_t delta; 333 uint64_t t1 = 0; 334 uint64_t t2 = 0; 335 uint64_t t3 = 0; 336 uint64_t t4 = 0; 337 338 t1 = timespec64_to_ns(&ptp_data->tstamp1); 339 t2 = timespec64_to_ns(&ptp_data->tstamp2); 340 t3 = timespec64_to_ns(&ptp_data->tstamp3); 341 t4 = timespec64_to_ns(&ptp_data->tstamp4); 342 343 delta = -((int64_t)((t2 - t1) - (t4 - t3))) / 2; 344 345 return delta; 346 } 347 348 /* 349 * Parse the PTP SYNC message. 350 */ 351 static void 352 parse_sync(struct ptpv2_data_slave_ordinary *ptp_data, uint16_t rx_tstamp_idx) 353 { 354 struct ptp_header *ptp_hdr; 355 356 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(ptp_data->m, char *) 357 + sizeof(struct rte_ether_hdr)); 358 ptp_data->seqID_SYNC = rte_be_to_cpu_16(ptp_hdr->seq_id); 359 360 if (ptp_data->ptpset == 0) { 361 rte_memcpy(&ptp_data->master_clock_id, 362 &ptp_hdr->source_port_id.clock_id, 363 sizeof(struct clock_id)); 364 ptp_data->ptpset = 1; 365 } 366 367 if (memcmp(&ptp_hdr->source_port_id.clock_id, 368 &ptp_hdr->source_port_id.clock_id, 369 sizeof(struct clock_id)) == 0) { 370 371 if (ptp_data->ptpset == 1) 372 rte_eth_timesync_read_rx_timestamp(ptp_data->portid, 373 &ptp_data->tstamp2, rx_tstamp_idx); 374 } 375 376 } 377 378 /* 379 * Parse the PTP FOLLOWUP message and send DELAY_REQ to the main clock. 380 */ 381 static void 382 parse_fup(struct ptpv2_data_slave_ordinary *ptp_data) 383 { 384 struct rte_ether_hdr *eth_hdr; 385 struct rte_ether_addr eth_addr; 386 struct ptp_header *ptp_hdr; 387 struct clock_id *client_clkid; 388 struct ptp_message *ptp_msg; 389 struct rte_mbuf *created_pkt; 390 struct tstamp *origin_tstamp; 391 struct rte_ether_addr eth_multicast = ether_multicast; 392 size_t pkt_size; 393 int wait_us; 394 struct rte_mbuf *m = ptp_data->m; 395 int ret; 396 397 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 398 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 399 + sizeof(struct rte_ether_hdr)); 400 if (memcmp(&ptp_data->master_clock_id, 401 &ptp_hdr->source_port_id.clock_id, 402 sizeof(struct clock_id)) != 0) 403 return; 404 405 ptp_data->seqID_FOLLOWUP = rte_be_to_cpu_16(ptp_hdr->seq_id); 406 ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + 407 sizeof(struct rte_ether_hdr)); 408 409 origin_tstamp = &ptp_msg->follow_up.precise_origin_tstamp; 410 ptp_data->tstamp1.tv_nsec = ntohl(origin_tstamp->ns); 411 ptp_data->tstamp1.tv_sec = 412 ((uint64_t)ntohl(origin_tstamp->sec_lsb)) | 413 (((uint64_t)ntohs(origin_tstamp->sec_msb)) << 32); 414 415 if (ptp_data->seqID_FOLLOWUP == ptp_data->seqID_SYNC) { 416 ret = rte_eth_macaddr_get(ptp_data->portid, ð_addr); 417 if (ret != 0) { 418 printf("\nCore %u: port %u failed to get MAC address: %s\n", 419 rte_lcore_id(), ptp_data->portid, 420 rte_strerror(-ret)); 421 return; 422 } 423 424 created_pkt = rte_pktmbuf_alloc(mbuf_pool); 425 pkt_size = sizeof(struct rte_ether_hdr) + 426 sizeof(struct ptp_message); 427 created_pkt->data_len = pkt_size; 428 created_pkt->pkt_len = pkt_size; 429 eth_hdr = rte_pktmbuf_mtod(created_pkt, struct rte_ether_hdr *); 430 rte_ether_addr_copy(ð_addr, ð_hdr->src_addr); 431 432 /* Set multicast address 01-1B-19-00-00-00. */ 433 rte_ether_addr_copy(ð_multicast, ð_hdr->dst_addr); 434 435 eth_hdr->ether_type = htons(PTP_PROTOCOL); 436 ptp_msg = (struct ptp_message *) 437 (rte_pktmbuf_mtod(created_pkt, char *) + 438 sizeof(struct rte_ether_hdr)); 439 440 ptp_msg->delay_req.hdr.seq_id = htons(ptp_data->seqID_SYNC); 441 ptp_msg->delay_req.hdr.msg_type = DELAY_REQ; 442 ptp_msg->delay_req.hdr.ver = 2; 443 ptp_msg->delay_req.hdr.control = 1; 444 ptp_msg->delay_req.hdr.log_message_interval = 127; 445 ptp_msg->delay_req.hdr.message_length = 446 htons(sizeof(struct delay_req_msg)); 447 ptp_msg->delay_req.hdr.domain_number = ptp_hdr->domain_number; 448 449 /* Set up clock id. */ 450 client_clkid = 451 &ptp_msg->delay_req.hdr.source_port_id.clock_id; 452 453 client_clkid->id[0] = eth_hdr->src_addr.addr_bytes[0]; 454 client_clkid->id[1] = eth_hdr->src_addr.addr_bytes[1]; 455 client_clkid->id[2] = eth_hdr->src_addr.addr_bytes[2]; 456 client_clkid->id[3] = 0xFF; 457 client_clkid->id[4] = 0xFE; 458 client_clkid->id[5] = eth_hdr->src_addr.addr_bytes[3]; 459 client_clkid->id[6] = eth_hdr->src_addr.addr_bytes[4]; 460 client_clkid->id[7] = eth_hdr->src_addr.addr_bytes[5]; 461 462 rte_memcpy(&ptp_data->client_clock_id, 463 client_clkid, 464 sizeof(struct clock_id)); 465 466 /* Enable flag for hardware timestamping. */ 467 created_pkt->ol_flags |= RTE_MBUF_F_TX_IEEE1588_TMST; 468 469 /*Read value from NIC to prevent latching with old value. */ 470 rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 471 &ptp_data->tstamp3); 472 473 /* Transmit the packet. */ 474 rte_eth_tx_burst(ptp_data->portid, 0, &created_pkt, 1); 475 476 wait_us = 0; 477 ptp_data->tstamp3.tv_nsec = 0; 478 ptp_data->tstamp3.tv_sec = 0; 479 480 /* Wait at least 1 us to read TX timestamp. */ 481 while ((rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 482 &ptp_data->tstamp3) < 0) && (wait_us < 1000)) { 483 rte_delay_us(1); 484 wait_us++; 485 } 486 } 487 } 488 489 /* 490 * Update the kernel time with the difference between it and the current NIC 491 * time. 492 */ 493 static inline void 494 update_kernel_time(void) 495 { 496 int64_t nsec; 497 struct timespec net_time, sys_time; 498 499 clock_gettime(CLOCK_REALTIME, &sys_time); 500 rte_eth_timesync_read_time(ptp_data.current_ptp_port, &net_time); 501 502 nsec = (int64_t)timespec64_to_ns(&net_time) - 503 (int64_t)timespec64_to_ns(&sys_time); 504 505 ptp_data.new_adj = ns_to_timeval(nsec); 506 507 /* 508 * If difference between kernel time and system time in NIC is too big 509 * (more than +/- 20 microseconds), use clock_settime to set directly 510 * the kernel time, as adjtime is better for small adjustments (takes 511 * longer to adjust the time). 512 */ 513 514 if (nsec > KERNEL_TIME_ADJUST_LIMIT || nsec < -KERNEL_TIME_ADJUST_LIMIT) 515 clock_settime(CLOCK_REALTIME, &net_time); 516 else 517 adjtime(&ptp_data.new_adj, 0); 518 519 520 } 521 522 /* 523 * Parse the DELAY_RESP message. 524 */ 525 static void 526 parse_drsp(struct ptpv2_data_slave_ordinary *ptp_data) 527 { 528 struct rte_mbuf *m = ptp_data->m; 529 struct ptp_message *ptp_msg; 530 struct tstamp *rx_tstamp; 531 uint16_t seq_id; 532 533 ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + 534 sizeof(struct rte_ether_hdr)); 535 seq_id = rte_be_to_cpu_16(ptp_msg->delay_resp.hdr.seq_id); 536 if (memcmp(&ptp_data->client_clock_id, 537 &ptp_msg->delay_resp.req_port_id.clock_id, 538 sizeof(struct clock_id)) == 0) { 539 if (seq_id == ptp_data->seqID_FOLLOWUP) { 540 rx_tstamp = &ptp_msg->delay_resp.rx_tstamp; 541 ptp_data->tstamp4.tv_nsec = ntohl(rx_tstamp->ns); 542 ptp_data->tstamp4.tv_sec = 543 ((uint64_t)ntohl(rx_tstamp->sec_lsb)) | 544 (((uint64_t)ntohs(rx_tstamp->sec_msb)) << 32); 545 546 /* Evaluate the delta for adjustment. */ 547 ptp_data->delta = delta_eval(ptp_data); 548 549 rte_eth_timesync_adjust_time(ptp_data->portid, 550 ptp_data->delta); 551 552 ptp_data->current_ptp_port = ptp_data->portid; 553 554 /* Update kernel time if enabled in app parameters. */ 555 if (ptp_data->kernel_time_set == 1) 556 update_kernel_time(); 557 558 559 560 } 561 } 562 } 563 564 /* This function processes PTP packets, implementing slave PTP IEEE1588 L2 565 * functionality. 566 */ 567 568 /* Parse ptp frames. 8< */ 569 static void 570 parse_ptp_frames(uint16_t portid, struct rte_mbuf *m) { 571 struct ptp_header *ptp_hdr; 572 struct rte_ether_hdr *eth_hdr; 573 uint16_t eth_type; 574 575 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 576 eth_type = rte_be_to_cpu_16(eth_hdr->ether_type); 577 578 if (eth_type == PTP_PROTOCOL) { 579 ptp_data.m = m; 580 ptp_data.portid = portid; 581 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 582 + sizeof(struct rte_ether_hdr)); 583 584 switch (ptp_hdr->msg_type) { 585 case SYNC: 586 parse_sync(&ptp_data, m->timesync); 587 break; 588 case FOLLOW_UP: 589 parse_fup(&ptp_data); 590 break; 591 case DELAY_RESP: 592 parse_drsp(&ptp_data); 593 print_clock_info(&ptp_data); 594 break; 595 default: 596 break; 597 } 598 } 599 } 600 /* >8 End of function processes PTP packets. */ 601 602 /* 603 * The lcore main. This is the main thread that does the work, reading from an 604 * input port and writing to an output port. 605 */ 606 static __rte_noreturn void 607 lcore_main(void) 608 { 609 uint16_t portid; 610 unsigned nb_rx; 611 struct rte_mbuf *m; 612 613 printf("\nCore %u Waiting for SYNC packets. [Ctrl+C to quit]\n", 614 rte_lcore_id()); 615 616 /* Run until the application is quit or killed. */ 617 618 while (1) { 619 /* Read packet from RX queues. 8< */ 620 for (portid = 0; portid < ptp_enabled_port_nb; portid++) { 621 622 portid = ptp_enabled_ports[portid]; 623 nb_rx = rte_eth_rx_burst(portid, 0, &m, 1); 624 625 if (likely(nb_rx == 0)) 626 continue; 627 628 /* Packet is parsed to determine which type. 8< */ 629 if (m->ol_flags & RTE_MBUF_F_RX_IEEE1588_PTP) 630 parse_ptp_frames(portid, m); 631 /* >8 End of packet is parsed to determine which type. */ 632 633 rte_pktmbuf_free(m); 634 } 635 /* >8 End of read packets from RX queues. */ 636 } 637 } 638 639 static void 640 print_usage(const char *prgname) 641 { 642 printf("%s [EAL options] -- -p PORTMASK -T VALUE\n" 643 " -T VALUE: 0 - Disable, 1 - Enable Linux Clock" 644 " Synchronization (0 default)\n" 645 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 646 prgname); 647 } 648 649 static int 650 ptp_parse_portmask(const char *portmask) 651 { 652 char *end = NULL; 653 unsigned long pm; 654 655 /* Parse the hexadecimal string. */ 656 pm = strtoul(portmask, &end, 16); 657 658 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 659 return 0; 660 661 return pm; 662 } 663 664 static int 665 parse_ptp_kernel(const char *param) 666 { 667 char *end = NULL; 668 unsigned long pm; 669 670 /* Parse the hexadecimal string. */ 671 pm = strtoul(param, &end, 16); 672 673 if ((param[0] == '\0') || (end == NULL) || (*end != '\0')) 674 return -1; 675 if (pm == 0) 676 return 0; 677 678 return 1; 679 } 680 681 /* Parse the commandline arguments. */ 682 static int 683 ptp_parse_args(int argc, char **argv) 684 { 685 int opt, ret; 686 char **argvopt; 687 int option_index; 688 char *prgname = argv[0]; 689 static struct option lgopts[] = { {NULL, 0, 0, 0} }; 690 691 argvopt = argv; 692 693 while ((opt = getopt_long(argc, argvopt, "p:T:", 694 lgopts, &option_index)) != EOF) { 695 696 switch (opt) { 697 698 /* Portmask. */ 699 case 'p': 700 ptp_enabled_port_mask = ptp_parse_portmask(optarg); 701 if (ptp_enabled_port_mask == 0) { 702 printf("invalid portmask\n"); 703 print_usage(prgname); 704 return -1; 705 } 706 break; 707 /* Time synchronization. */ 708 case 'T': 709 ret = parse_ptp_kernel(optarg); 710 if (ret < 0) { 711 print_usage(prgname); 712 return -1; 713 } 714 715 ptp_data.kernel_time_set = ret; 716 break; 717 718 default: 719 print_usage(prgname); 720 return -1; 721 } 722 } 723 724 argv[optind-1] = prgname; 725 726 optind = 1; /* Reset getopt lib. */ 727 728 return 0; 729 } 730 731 /* 732 * The main function, which does initialization and calls the per-lcore 733 * functions. 734 */ 735 int 736 main(int argc, char *argv[]) 737 { 738 unsigned nb_ports; 739 740 uint16_t portid; 741 742 /* Initialize the Environment Abstraction Layer (EAL). 8< */ 743 int ret = rte_eal_init(argc, argv); 744 745 if (ret < 0) 746 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n"); 747 /* >8 End of initialization of EAL. */ 748 749 memset(&ptp_data, '\0', sizeof(struct ptpv2_data_slave_ordinary)); 750 751 /* Parse specific arguments. 8< */ 752 argc -= ret; 753 argv += ret; 754 755 ret = ptp_parse_args(argc, argv); 756 if (ret < 0) 757 rte_exit(EXIT_FAILURE, "Error with PTP initialization\n"); 758 /* >8 End of parsing specific arguments. */ 759 760 /* Check that there is an even number of ports to send/receive on. */ 761 nb_ports = rte_eth_dev_count_avail(); 762 763 /* Creates a new mempool in memory to hold the mbufs. 8< */ 764 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports, 765 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 766 /* >8 End of a new mempool in memory to hold the mbufs. */ 767 768 if (mbuf_pool == NULL) 769 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); 770 771 /* Initialize all ports. 8< */ 772 RTE_ETH_FOREACH_DEV(portid) { 773 if ((ptp_enabled_port_mask & (1 << portid)) != 0) { 774 if (port_init(portid, mbuf_pool) == 0) { 775 ptp_enabled_ports[ptp_enabled_port_nb] = portid; 776 ptp_enabled_port_nb++; 777 } else { 778 rte_exit(EXIT_FAILURE, 779 "Cannot init port %"PRIu8 "\n", 780 portid); 781 } 782 } else 783 printf("Skipping disabled port %u\n", portid); 784 } 785 /* >8 End of initialization of all ports. */ 786 787 if (ptp_enabled_port_nb == 0) { 788 rte_exit(EXIT_FAILURE, 789 "All available ports are disabled." 790 " Please set portmask.\n"); 791 } 792 793 if (rte_lcore_count() > 1) 794 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n"); 795 796 /* Call lcore_main on the main core only. */ 797 lcore_main(); 798 799 /* clean up the EAL */ 800 rte_eal_cleanup(); 801 802 return 0; 803 } 804