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 delay_req_msg *req_msg; 390 struct rte_mbuf *created_pkt; 391 struct tstamp *origin_tstamp; 392 struct rte_ether_addr eth_multicast = ether_multicast; 393 size_t pkt_size; 394 int wait_us; 395 struct rte_mbuf *m = ptp_data->m; 396 int ret; 397 398 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 399 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 400 + sizeof(struct rte_ether_hdr)); 401 if (memcmp(&ptp_data->master_clock_id, 402 &ptp_hdr->source_port_id.clock_id, 403 sizeof(struct clock_id)) != 0) 404 return; 405 406 ptp_data->seqID_FOLLOWUP = rte_be_to_cpu_16(ptp_hdr->seq_id); 407 ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + 408 sizeof(struct rte_ether_hdr)); 409 410 origin_tstamp = &ptp_msg->follow_up.precise_origin_tstamp; 411 ptp_data->tstamp1.tv_nsec = ntohl(origin_tstamp->ns); 412 ptp_data->tstamp1.tv_sec = 413 ((uint64_t)ntohl(origin_tstamp->sec_lsb)) | 414 (((uint64_t)ntohs(origin_tstamp->sec_msb)) << 32); 415 416 if (ptp_data->seqID_FOLLOWUP == ptp_data->seqID_SYNC) { 417 ret = rte_eth_macaddr_get(ptp_data->portid, ð_addr); 418 if (ret != 0) { 419 printf("\nCore %u: port %u failed to get MAC address: %s\n", 420 rte_lcore_id(), ptp_data->portid, 421 rte_strerror(-ret)); 422 return; 423 } 424 425 created_pkt = rte_pktmbuf_alloc(mbuf_pool); 426 pkt_size = sizeof(struct rte_ether_hdr) + 427 sizeof(struct delay_req_msg); 428 429 if (rte_pktmbuf_append(created_pkt, pkt_size) == NULL) { 430 rte_pktmbuf_free(created_pkt); 431 return; 432 } 433 created_pkt->data_len = pkt_size; 434 created_pkt->pkt_len = pkt_size; 435 eth_hdr = rte_pktmbuf_mtod(created_pkt, struct rte_ether_hdr *); 436 rte_ether_addr_copy(ð_addr, ð_hdr->src_addr); 437 438 /* Set multicast address 01-1B-19-00-00-00. */ 439 rte_ether_addr_copy(ð_multicast, ð_hdr->dst_addr); 440 441 eth_hdr->ether_type = htons(PTP_PROTOCOL); 442 req_msg = rte_pktmbuf_mtod_offset(created_pkt, 443 struct delay_req_msg *, sizeof(struct 444 rte_ether_hdr)); 445 446 req_msg->hdr.seq_id = htons(ptp_data->seqID_SYNC); 447 req_msg->hdr.msg_type = DELAY_REQ; 448 req_msg->hdr.ver = 2; 449 req_msg->hdr.control = 1; 450 req_msg->hdr.log_message_interval = 127; 451 req_msg->hdr.message_length = 452 htons(sizeof(struct delay_req_msg)); 453 req_msg->hdr.domain_number = ptp_hdr->domain_number; 454 455 /* Set up clock id. */ 456 client_clkid = 457 &req_msg->hdr.source_port_id.clock_id; 458 459 client_clkid->id[0] = eth_hdr->src_addr.addr_bytes[0]; 460 client_clkid->id[1] = eth_hdr->src_addr.addr_bytes[1]; 461 client_clkid->id[2] = eth_hdr->src_addr.addr_bytes[2]; 462 client_clkid->id[3] = 0xFF; 463 client_clkid->id[4] = 0xFE; 464 client_clkid->id[5] = eth_hdr->src_addr.addr_bytes[3]; 465 client_clkid->id[6] = eth_hdr->src_addr.addr_bytes[4]; 466 client_clkid->id[7] = eth_hdr->src_addr.addr_bytes[5]; 467 468 rte_memcpy(&ptp_data->client_clock_id, 469 client_clkid, 470 sizeof(struct clock_id)); 471 472 /* Enable flag for hardware timestamping. */ 473 created_pkt->ol_flags |= RTE_MBUF_F_TX_IEEE1588_TMST; 474 475 /*Read value from NIC to prevent latching with old value. */ 476 rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 477 &ptp_data->tstamp3); 478 479 /* Transmit the packet. */ 480 rte_eth_tx_burst(ptp_data->portid, 0, &created_pkt, 1); 481 482 wait_us = 0; 483 ptp_data->tstamp3.tv_nsec = 0; 484 ptp_data->tstamp3.tv_sec = 0; 485 486 /* Wait at least 1 us to read TX timestamp. */ 487 while ((rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 488 &ptp_data->tstamp3) < 0) && (wait_us < 1000)) { 489 rte_delay_us(1); 490 wait_us++; 491 } 492 } 493 } 494 495 /* 496 * Update the kernel time with the difference between it and the current NIC 497 * time. 498 */ 499 static inline void 500 update_kernel_time(void) 501 { 502 int64_t nsec; 503 struct timespec net_time, sys_time; 504 505 clock_gettime(CLOCK_REALTIME, &sys_time); 506 rte_eth_timesync_read_time(ptp_data.current_ptp_port, &net_time); 507 508 nsec = (int64_t)timespec64_to_ns(&net_time) - 509 (int64_t)timespec64_to_ns(&sys_time); 510 511 ptp_data.new_adj = ns_to_timeval(nsec); 512 513 /* 514 * If difference between kernel time and system time in NIC is too big 515 * (more than +/- 20 microseconds), use clock_settime to set directly 516 * the kernel time, as adjtime is better for small adjustments (takes 517 * longer to adjust the time). 518 */ 519 520 if (nsec > KERNEL_TIME_ADJUST_LIMIT || nsec < -KERNEL_TIME_ADJUST_LIMIT) 521 clock_settime(CLOCK_REALTIME, &net_time); 522 else 523 adjtime(&ptp_data.new_adj, 0); 524 525 526 } 527 528 /* 529 * Parse the DELAY_RESP message. 530 */ 531 static void 532 parse_drsp(struct ptpv2_data_slave_ordinary *ptp_data) 533 { 534 struct rte_mbuf *m = ptp_data->m; 535 struct ptp_message *ptp_msg; 536 struct tstamp *rx_tstamp; 537 uint16_t seq_id; 538 539 ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + 540 sizeof(struct rte_ether_hdr)); 541 seq_id = rte_be_to_cpu_16(ptp_msg->delay_resp.hdr.seq_id); 542 if (memcmp(&ptp_data->client_clock_id, 543 &ptp_msg->delay_resp.req_port_id.clock_id, 544 sizeof(struct clock_id)) == 0) { 545 if (seq_id == ptp_data->seqID_FOLLOWUP) { 546 rx_tstamp = &ptp_msg->delay_resp.rx_tstamp; 547 ptp_data->tstamp4.tv_nsec = ntohl(rx_tstamp->ns); 548 ptp_data->tstamp4.tv_sec = 549 ((uint64_t)ntohl(rx_tstamp->sec_lsb)) | 550 (((uint64_t)ntohs(rx_tstamp->sec_msb)) << 32); 551 552 /* Evaluate the delta for adjustment. */ 553 ptp_data->delta = delta_eval(ptp_data); 554 555 rte_eth_timesync_adjust_time(ptp_data->portid, 556 ptp_data->delta); 557 558 ptp_data->current_ptp_port = ptp_data->portid; 559 560 /* Update kernel time if enabled in app parameters. */ 561 if (ptp_data->kernel_time_set == 1) 562 update_kernel_time(); 563 564 565 566 } 567 } 568 } 569 570 /* This function processes PTP packets, implementing slave PTP IEEE1588 L2 571 * functionality. 572 */ 573 574 /* Parse ptp frames. 8< */ 575 static void 576 parse_ptp_frames(uint16_t portid, struct rte_mbuf *m) { 577 struct ptp_header *ptp_hdr; 578 struct rte_ether_hdr *eth_hdr; 579 uint16_t eth_type; 580 581 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 582 eth_type = rte_be_to_cpu_16(eth_hdr->ether_type); 583 584 if (eth_type == PTP_PROTOCOL) { 585 ptp_data.m = m; 586 ptp_data.portid = portid; 587 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 588 + sizeof(struct rte_ether_hdr)); 589 590 switch (ptp_hdr->msg_type) { 591 case SYNC: 592 parse_sync(&ptp_data, m->timesync); 593 break; 594 case FOLLOW_UP: 595 parse_fup(&ptp_data); 596 break; 597 case DELAY_RESP: 598 parse_drsp(&ptp_data); 599 print_clock_info(&ptp_data); 600 break; 601 default: 602 break; 603 } 604 } 605 } 606 /* >8 End of function processes PTP packets. */ 607 608 /* 609 * The lcore main. This is the main thread that does the work, reading from an 610 * input port and writing to an output port. 611 */ 612 static __rte_noreturn void 613 lcore_main(void) 614 { 615 uint16_t portid; 616 unsigned nb_rx; 617 struct rte_mbuf *m; 618 619 printf("\nCore %u Waiting for SYNC packets. [Ctrl+C to quit]\n", 620 rte_lcore_id()); 621 622 /* Run until the application is quit or killed. */ 623 624 while (1) { 625 /* Read packet from RX queues. 8< */ 626 for (portid = 0; portid < ptp_enabled_port_nb; portid++) { 627 628 portid = ptp_enabled_ports[portid]; 629 nb_rx = rte_eth_rx_burst(portid, 0, &m, 1); 630 631 if (likely(nb_rx == 0)) 632 continue; 633 634 /* Packet is parsed to determine which type. 8< */ 635 if (m->ol_flags & RTE_MBUF_F_RX_IEEE1588_PTP) 636 parse_ptp_frames(portid, m); 637 /* >8 End of packet is parsed to determine which type. */ 638 639 rte_pktmbuf_free(m); 640 } 641 /* >8 End of read packets from RX queues. */ 642 } 643 } 644 645 static void 646 print_usage(const char *prgname) 647 { 648 printf("%s [EAL options] -- -p PORTMASK -T VALUE\n" 649 " -T VALUE: 0 - Disable, 1 - Enable Linux Clock" 650 " Synchronization (0 default)\n" 651 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 652 prgname); 653 } 654 655 static int 656 ptp_parse_portmask(const char *portmask) 657 { 658 char *end = NULL; 659 unsigned long pm; 660 661 /* Parse the hexadecimal string. */ 662 pm = strtoul(portmask, &end, 16); 663 664 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 665 return 0; 666 667 return pm; 668 } 669 670 static int 671 parse_ptp_kernel(const char *param) 672 { 673 char *end = NULL; 674 unsigned long pm; 675 676 /* Parse the hexadecimal string. */ 677 pm = strtoul(param, &end, 16); 678 679 if ((param[0] == '\0') || (end == NULL) || (*end != '\0')) 680 return -1; 681 if (pm == 0) 682 return 0; 683 684 return 1; 685 } 686 687 /* Parse the commandline arguments. */ 688 static int 689 ptp_parse_args(int argc, char **argv) 690 { 691 int opt, ret; 692 char **argvopt; 693 int option_index; 694 char *prgname = argv[0]; 695 static struct option lgopts[] = { {NULL, 0, 0, 0} }; 696 697 argvopt = argv; 698 699 while ((opt = getopt_long(argc, argvopt, "p:T:", 700 lgopts, &option_index)) != EOF) { 701 702 switch (opt) { 703 704 /* Portmask. */ 705 case 'p': 706 ptp_enabled_port_mask = ptp_parse_portmask(optarg); 707 if (ptp_enabled_port_mask == 0) { 708 printf("invalid portmask\n"); 709 print_usage(prgname); 710 return -1; 711 } 712 break; 713 /* Time synchronization. */ 714 case 'T': 715 ret = parse_ptp_kernel(optarg); 716 if (ret < 0) { 717 print_usage(prgname); 718 return -1; 719 } 720 721 ptp_data.kernel_time_set = ret; 722 break; 723 724 default: 725 print_usage(prgname); 726 return -1; 727 } 728 } 729 730 argv[optind-1] = prgname; 731 732 optind = 1; /* Reset getopt lib. */ 733 734 return 0; 735 } 736 737 /* 738 * The main function, which does initialization and calls the per-lcore 739 * functions. 740 */ 741 int 742 main(int argc, char *argv[]) 743 { 744 unsigned nb_ports; 745 746 uint16_t portid; 747 748 /* Initialize the Environment Abstraction Layer (EAL). 8< */ 749 int ret = rte_eal_init(argc, argv); 750 751 if (ret < 0) 752 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n"); 753 /* >8 End of initialization of EAL. */ 754 755 memset(&ptp_data, '\0', sizeof(struct ptpv2_data_slave_ordinary)); 756 757 /* Parse specific arguments. 8< */ 758 argc -= ret; 759 argv += ret; 760 761 ret = ptp_parse_args(argc, argv); 762 if (ret < 0) 763 rte_exit(EXIT_FAILURE, "Error with PTP initialization\n"); 764 /* >8 End of parsing specific arguments. */ 765 766 /* Check that there is an even number of ports to send/receive on. */ 767 nb_ports = rte_eth_dev_count_avail(); 768 769 /* Creates a new mempool in memory to hold the mbufs. 8< */ 770 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports, 771 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 772 /* >8 End of a new mempool in memory to hold the mbufs. */ 773 774 if (mbuf_pool == NULL) 775 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); 776 777 /* Initialize all ports. 8< */ 778 RTE_ETH_FOREACH_DEV(portid) { 779 if ((ptp_enabled_port_mask & (1 << portid)) != 0) { 780 if (port_init(portid, mbuf_pool) == 0) { 781 ptp_enabled_ports[ptp_enabled_port_nb] = portid; 782 ptp_enabled_port_nb++; 783 } else { 784 rte_exit(EXIT_FAILURE, 785 "Cannot init port %"PRIu8 "\n", 786 portid); 787 } 788 } else 789 printf("Skipping disabled port %u\n", portid); 790 } 791 /* >8 End of initialization of all ports. */ 792 793 if (ptp_enabled_port_nb == 0) { 794 rte_exit(EXIT_FAILURE, 795 "All available ports are disabled." 796 " Please set portmask.\n"); 797 } 798 799 if (rte_lcore_count() > 1) 800 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n"); 801 802 /* Call lcore_main on the main core only. */ 803 lcore_main(); 804 805 /* clean up the EAL */ 806 rte_eal_cleanup(); 807 808 return 0; 809 } 810