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.rx_offload_capa & DEV_RX_OFFLOAD_TIMESTAMP) 201 port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_TIMESTAMP; 202 203 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE) 204 port_conf.txmode.offloads |= 205 DEV_TX_OFFLOAD_MBUF_FAST_FREE; 206 /* Force full Tx path in the driver, required for IEEE1588 */ 207 port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS; 208 209 /* Configure the Ethernet device. */ 210 retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf); 211 if (retval != 0) 212 return retval; 213 214 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd); 215 if (retval != 0) 216 return retval; 217 218 /* Allocate and set up 1 RX queue per Ethernet port. */ 219 for (q = 0; q < rx_rings; q++) { 220 struct rte_eth_rxconf *rxconf; 221 222 rxconf = &dev_info.default_rxconf; 223 rxconf->offloads = port_conf.rxmode.offloads; 224 225 retval = rte_eth_rx_queue_setup(port, q, nb_rxd, 226 rte_eth_dev_socket_id(port), rxconf, mbuf_pool); 227 228 if (retval < 0) 229 return retval; 230 } 231 232 /* Allocate and set up 1 TX queue per Ethernet port. */ 233 for (q = 0; q < tx_rings; q++) { 234 struct rte_eth_txconf *txconf; 235 236 txconf = &dev_info.default_txconf; 237 txconf->offloads = port_conf.txmode.offloads; 238 239 retval = rte_eth_tx_queue_setup(port, q, nb_txd, 240 rte_eth_dev_socket_id(port), txconf); 241 if (retval < 0) 242 return retval; 243 } 244 245 /* Start the Ethernet port. */ 246 retval = rte_eth_dev_start(port); 247 if (retval < 0) 248 return retval; 249 250 /* Enable timesync timestamping for the Ethernet device */ 251 retval = rte_eth_timesync_enable(port); 252 if (retval < 0) { 253 printf("Timesync enable failed: %d\n", retval); 254 return retval; 255 } 256 257 /* Enable RX in promiscuous mode for the Ethernet device. */ 258 retval = rte_eth_promiscuous_enable(port); 259 if (retval != 0) { 260 printf("Promiscuous mode enable failed: %s\n", 261 rte_strerror(-retval)); 262 return retval; 263 } 264 265 return 0; 266 } 267 268 static void 269 print_clock_info(struct ptpv2_data_slave_ordinary *ptp_data) 270 { 271 int64_t nsec; 272 struct timespec net_time, sys_time; 273 274 printf("Master Clock id: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 275 ptp_data->master_clock_id.id[0], 276 ptp_data->master_clock_id.id[1], 277 ptp_data->master_clock_id.id[2], 278 ptp_data->master_clock_id.id[3], 279 ptp_data->master_clock_id.id[4], 280 ptp_data->master_clock_id.id[5], 281 ptp_data->master_clock_id.id[6], 282 ptp_data->master_clock_id.id[7]); 283 284 printf("\nT2 - Slave Clock. %lds %ldns", 285 (ptp_data->tstamp2.tv_sec), 286 (ptp_data->tstamp2.tv_nsec)); 287 288 printf("\nT1 - Master Clock. %lds %ldns ", 289 ptp_data->tstamp1.tv_sec, 290 (ptp_data->tstamp1.tv_nsec)); 291 292 printf("\nT3 - Slave Clock. %lds %ldns", 293 ptp_data->tstamp3.tv_sec, 294 (ptp_data->tstamp3.tv_nsec)); 295 296 printf("\nT4 - Master Clock. %lds %ldns ", 297 ptp_data->tstamp4.tv_sec, 298 (ptp_data->tstamp4.tv_nsec)); 299 300 printf("\nDelta between master and slave clocks:%"PRId64"ns\n", 301 ptp_data->delta); 302 303 clock_gettime(CLOCK_REALTIME, &sys_time); 304 rte_eth_timesync_read_time(ptp_data->current_ptp_port, &net_time); 305 306 time_t ts = net_time.tv_sec; 307 308 printf("\n\nComparison between Linux kernel Time and PTP:"); 309 310 printf("\nCurrent PTP Time: %.24s %.9ld ns", 311 ctime(&ts), net_time.tv_nsec); 312 313 nsec = (int64_t)timespec64_to_ns(&net_time) - 314 (int64_t)timespec64_to_ns(&sys_time); 315 ptp_data->new_adj = ns_to_timeval(nsec); 316 317 gettimeofday(&ptp_data->new_adj, NULL); 318 319 time_t tp = ptp_data->new_adj.tv_sec; 320 321 printf("\nCurrent SYS Time: %.24s %.6ld ns", 322 ctime(&tp), ptp_data->new_adj.tv_usec); 323 324 printf("\nDelta between PTP and Linux Kernel time:%"PRId64"ns\n", 325 nsec); 326 327 printf("[Ctrl+C to quit]\n"); 328 329 /* Clear screen and put cursor in column 1, row 1 */ 330 printf("\033[2J\033[1;1H"); 331 } 332 333 static int64_t 334 delta_eval(struct ptpv2_data_slave_ordinary *ptp_data) 335 { 336 int64_t delta; 337 uint64_t t1 = 0; 338 uint64_t t2 = 0; 339 uint64_t t3 = 0; 340 uint64_t t4 = 0; 341 342 t1 = timespec64_to_ns(&ptp_data->tstamp1); 343 t2 = timespec64_to_ns(&ptp_data->tstamp2); 344 t3 = timespec64_to_ns(&ptp_data->tstamp3); 345 t4 = timespec64_to_ns(&ptp_data->tstamp4); 346 347 delta = -((int64_t)((t2 - t1) - (t4 - t3))) / 2; 348 349 return delta; 350 } 351 352 /* 353 * Parse the PTP SYNC message. 354 */ 355 static void 356 parse_sync(struct ptpv2_data_slave_ordinary *ptp_data, uint16_t rx_tstamp_idx) 357 { 358 struct ptp_header *ptp_hdr; 359 360 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(ptp_data->m, char *) 361 + sizeof(struct rte_ether_hdr)); 362 ptp_data->seqID_SYNC = rte_be_to_cpu_16(ptp_hdr->seq_id); 363 364 if (ptp_data->ptpset == 0) { 365 rte_memcpy(&ptp_data->master_clock_id, 366 &ptp_hdr->source_port_id.clock_id, 367 sizeof(struct clock_id)); 368 ptp_data->ptpset = 1; 369 } 370 371 if (memcmp(&ptp_hdr->source_port_id.clock_id, 372 &ptp_hdr->source_port_id.clock_id, 373 sizeof(struct clock_id)) == 0) { 374 375 if (ptp_data->ptpset == 1) 376 rte_eth_timesync_read_rx_timestamp(ptp_data->portid, 377 &ptp_data->tstamp2, rx_tstamp_idx); 378 } 379 380 } 381 382 /* 383 * Parse the PTP FOLLOWUP message and send DELAY_REQ to the main clock. 384 */ 385 static void 386 parse_fup(struct ptpv2_data_slave_ordinary *ptp_data) 387 { 388 struct rte_ether_hdr *eth_hdr; 389 struct rte_ether_addr eth_addr; 390 struct ptp_header *ptp_hdr; 391 struct clock_id *client_clkid; 392 struct ptp_message *ptp_msg; 393 struct rte_mbuf *created_pkt; 394 struct tstamp *origin_tstamp; 395 struct rte_ether_addr eth_multicast = ether_multicast; 396 size_t pkt_size; 397 int wait_us; 398 struct rte_mbuf *m = ptp_data->m; 399 int ret; 400 401 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 402 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 403 + sizeof(struct rte_ether_hdr)); 404 if (memcmp(&ptp_data->master_clock_id, 405 &ptp_hdr->source_port_id.clock_id, 406 sizeof(struct clock_id)) != 0) 407 return; 408 409 ptp_data->seqID_FOLLOWUP = rte_be_to_cpu_16(ptp_hdr->seq_id); 410 ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + 411 sizeof(struct rte_ether_hdr)); 412 413 origin_tstamp = &ptp_msg->follow_up.precise_origin_tstamp; 414 ptp_data->tstamp1.tv_nsec = ntohl(origin_tstamp->ns); 415 ptp_data->tstamp1.tv_sec = 416 ((uint64_t)ntohl(origin_tstamp->sec_lsb)) | 417 (((uint64_t)ntohs(origin_tstamp->sec_msb)) << 32); 418 419 if (ptp_data->seqID_FOLLOWUP == ptp_data->seqID_SYNC) { 420 ret = rte_eth_macaddr_get(ptp_data->portid, ð_addr); 421 if (ret != 0) { 422 printf("\nCore %u: port %u failed to get MAC address: %s\n", 423 rte_lcore_id(), ptp_data->portid, 424 rte_strerror(-ret)); 425 return; 426 } 427 428 created_pkt = rte_pktmbuf_alloc(mbuf_pool); 429 pkt_size = sizeof(struct rte_ether_hdr) + 430 sizeof(struct ptp_message); 431 created_pkt->data_len = pkt_size; 432 created_pkt->pkt_len = pkt_size; 433 eth_hdr = rte_pktmbuf_mtod(created_pkt, struct rte_ether_hdr *); 434 rte_ether_addr_copy(ð_addr, ð_hdr->src_addr); 435 436 /* Set multicast address 01-1B-19-00-00-00. */ 437 rte_ether_addr_copy(ð_multicast, ð_hdr->dst_addr); 438 439 eth_hdr->ether_type = htons(PTP_PROTOCOL); 440 ptp_msg = (struct ptp_message *) 441 (rte_pktmbuf_mtod(created_pkt, char *) + 442 sizeof(struct rte_ether_hdr)); 443 444 ptp_msg->delay_req.hdr.seq_id = htons(ptp_data->seqID_SYNC); 445 ptp_msg->delay_req.hdr.msg_type = DELAY_REQ; 446 ptp_msg->delay_req.hdr.ver = 2; 447 ptp_msg->delay_req.hdr.control = 1; 448 ptp_msg->delay_req.hdr.log_message_interval = 127; 449 ptp_msg->delay_req.hdr.message_length = 450 htons(sizeof(struct delay_req_msg)); 451 ptp_msg->delay_req.hdr.domain_number = ptp_hdr->domain_number; 452 453 /* Set up clock id. */ 454 client_clkid = 455 &ptp_msg->delay_req.hdr.source_port_id.clock_id; 456 457 client_clkid->id[0] = eth_hdr->src_addr.addr_bytes[0]; 458 client_clkid->id[1] = eth_hdr->src_addr.addr_bytes[1]; 459 client_clkid->id[2] = eth_hdr->src_addr.addr_bytes[2]; 460 client_clkid->id[3] = 0xFF; 461 client_clkid->id[4] = 0xFE; 462 client_clkid->id[5] = eth_hdr->src_addr.addr_bytes[3]; 463 client_clkid->id[6] = eth_hdr->src_addr.addr_bytes[4]; 464 client_clkid->id[7] = eth_hdr->src_addr.addr_bytes[5]; 465 466 rte_memcpy(&ptp_data->client_clock_id, 467 client_clkid, 468 sizeof(struct clock_id)); 469 470 /* Enable flag for hardware timestamping. */ 471 created_pkt->ol_flags |= PKT_TX_IEEE1588_TMST; 472 473 /*Read value from NIC to prevent latching with old value. */ 474 rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 475 &ptp_data->tstamp3); 476 477 /* Transmit the packet. */ 478 rte_eth_tx_burst(ptp_data->portid, 0, &created_pkt, 1); 479 480 wait_us = 0; 481 ptp_data->tstamp3.tv_nsec = 0; 482 ptp_data->tstamp3.tv_sec = 0; 483 484 /* Wait at least 1 us to read TX timestamp. */ 485 while ((rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 486 &ptp_data->tstamp3) < 0) && (wait_us < 1000)) { 487 rte_delay_us(1); 488 wait_us++; 489 } 490 } 491 } 492 493 /* 494 * Update the kernel time with the difference between it and the current NIC 495 * time. 496 */ 497 static inline void 498 update_kernel_time(void) 499 { 500 int64_t nsec; 501 struct timespec net_time, sys_time; 502 503 clock_gettime(CLOCK_REALTIME, &sys_time); 504 rte_eth_timesync_read_time(ptp_data.current_ptp_port, &net_time); 505 506 nsec = (int64_t)timespec64_to_ns(&net_time) - 507 (int64_t)timespec64_to_ns(&sys_time); 508 509 ptp_data.new_adj = ns_to_timeval(nsec); 510 511 /* 512 * If difference between kernel time and system time in NIC is too big 513 * (more than +/- 20 microseconds), use clock_settime to set directly 514 * the kernel time, as adjtime is better for small adjustments (takes 515 * longer to adjust the time). 516 */ 517 518 if (nsec > KERNEL_TIME_ADJUST_LIMIT || nsec < -KERNEL_TIME_ADJUST_LIMIT) 519 clock_settime(CLOCK_REALTIME, &net_time); 520 else 521 adjtime(&ptp_data.new_adj, 0); 522 523 524 } 525 526 /* 527 * Parse the DELAY_RESP message. 528 */ 529 static void 530 parse_drsp(struct ptpv2_data_slave_ordinary *ptp_data) 531 { 532 struct rte_mbuf *m = ptp_data->m; 533 struct ptp_message *ptp_msg; 534 struct tstamp *rx_tstamp; 535 uint16_t seq_id; 536 537 ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + 538 sizeof(struct rte_ether_hdr)); 539 seq_id = rte_be_to_cpu_16(ptp_msg->delay_resp.hdr.seq_id); 540 if (memcmp(&ptp_data->client_clock_id, 541 &ptp_msg->delay_resp.req_port_id.clock_id, 542 sizeof(struct clock_id)) == 0) { 543 if (seq_id == ptp_data->seqID_FOLLOWUP) { 544 rx_tstamp = &ptp_msg->delay_resp.rx_tstamp; 545 ptp_data->tstamp4.tv_nsec = ntohl(rx_tstamp->ns); 546 ptp_data->tstamp4.tv_sec = 547 ((uint64_t)ntohl(rx_tstamp->sec_lsb)) | 548 (((uint64_t)ntohs(rx_tstamp->sec_msb)) << 32); 549 550 /* Evaluate the delta for adjustment. */ 551 ptp_data->delta = delta_eval(ptp_data); 552 553 rte_eth_timesync_adjust_time(ptp_data->portid, 554 ptp_data->delta); 555 556 ptp_data->current_ptp_port = ptp_data->portid; 557 558 /* Update kernel time if enabled in app parameters. */ 559 if (ptp_data->kernel_time_set == 1) 560 update_kernel_time(); 561 562 563 564 } 565 } 566 } 567 568 /* This function processes PTP packets, implementing slave PTP IEEE1588 L2 569 * functionality. 570 */ 571 572 /* Parse ptp frames. 8< */ 573 static void 574 parse_ptp_frames(uint16_t portid, struct rte_mbuf *m) { 575 struct ptp_header *ptp_hdr; 576 struct rte_ether_hdr *eth_hdr; 577 uint16_t eth_type; 578 579 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 580 eth_type = rte_be_to_cpu_16(eth_hdr->ether_type); 581 582 if (eth_type == PTP_PROTOCOL) { 583 ptp_data.m = m; 584 ptp_data.portid = portid; 585 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 586 + sizeof(struct rte_ether_hdr)); 587 588 switch (ptp_hdr->msg_type) { 589 case SYNC: 590 parse_sync(&ptp_data, m->timesync); 591 break; 592 case FOLLOW_UP: 593 parse_fup(&ptp_data); 594 break; 595 case DELAY_RESP: 596 parse_drsp(&ptp_data); 597 print_clock_info(&ptp_data); 598 break; 599 default: 600 break; 601 } 602 } 603 } 604 /* >8 End of function processes PTP packets. */ 605 606 /* 607 * The lcore main. This is the main thread that does the work, reading from an 608 * input port and writing to an output port. 609 */ 610 static __rte_noreturn void 611 lcore_main(void) 612 { 613 uint16_t portid; 614 unsigned nb_rx; 615 struct rte_mbuf *m; 616 617 printf("\nCore %u Waiting for SYNC packets. [Ctrl+C to quit]\n", 618 rte_lcore_id()); 619 620 /* Run until the application is quit or killed. */ 621 622 while (1) { 623 /* Read packet from RX queues. 8< */ 624 for (portid = 0; portid < ptp_enabled_port_nb; portid++) { 625 626 portid = ptp_enabled_ports[portid]; 627 nb_rx = rte_eth_rx_burst(portid, 0, &m, 1); 628 629 if (likely(nb_rx == 0)) 630 continue; 631 632 /* Packet is parsed to determine which type. 8< */ 633 if (m->ol_flags & PKT_RX_IEEE1588_PTP) 634 parse_ptp_frames(portid, m); 635 /* >8 End of packet is parsed to determine which type. */ 636 637 rte_pktmbuf_free(m); 638 } 639 /* >8 End of read packets from RX queues. */ 640 } 641 } 642 643 static void 644 print_usage(const char *prgname) 645 { 646 printf("%s [EAL options] -- -p PORTMASK -T VALUE\n" 647 " -T VALUE: 0 - Disable, 1 - Enable Linux Clock" 648 " Synchronization (0 default)\n" 649 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 650 prgname); 651 } 652 653 static int 654 ptp_parse_portmask(const char *portmask) 655 { 656 char *end = NULL; 657 unsigned long pm; 658 659 /* Parse the hexadecimal string. */ 660 pm = strtoul(portmask, &end, 16); 661 662 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 663 return 0; 664 665 return pm; 666 } 667 668 static int 669 parse_ptp_kernel(const char *param) 670 { 671 char *end = NULL; 672 unsigned long pm; 673 674 /* Parse the hexadecimal string. */ 675 pm = strtoul(param, &end, 16); 676 677 if ((param[0] == '\0') || (end == NULL) || (*end != '\0')) 678 return -1; 679 if (pm == 0) 680 return 0; 681 682 return 1; 683 } 684 685 /* Parse the commandline arguments. */ 686 static int 687 ptp_parse_args(int argc, char **argv) 688 { 689 int opt, ret; 690 char **argvopt; 691 int option_index; 692 char *prgname = argv[0]; 693 static struct option lgopts[] = { {NULL, 0, 0, 0} }; 694 695 argvopt = argv; 696 697 while ((opt = getopt_long(argc, argvopt, "p:T:", 698 lgopts, &option_index)) != EOF) { 699 700 switch (opt) { 701 702 /* Portmask. */ 703 case 'p': 704 ptp_enabled_port_mask = ptp_parse_portmask(optarg); 705 if (ptp_enabled_port_mask == 0) { 706 printf("invalid portmask\n"); 707 print_usage(prgname); 708 return -1; 709 } 710 break; 711 /* Time synchronization. */ 712 case 'T': 713 ret = parse_ptp_kernel(optarg); 714 if (ret < 0) { 715 print_usage(prgname); 716 return -1; 717 } 718 719 ptp_data.kernel_time_set = ret; 720 break; 721 722 default: 723 print_usage(prgname); 724 return -1; 725 } 726 } 727 728 argv[optind-1] = prgname; 729 730 optind = 1; /* Reset getopt lib. */ 731 732 return 0; 733 } 734 735 /* 736 * The main function, which does initialization and calls the per-lcore 737 * functions. 738 */ 739 int 740 main(int argc, char *argv[]) 741 { 742 unsigned nb_ports; 743 744 uint16_t portid; 745 746 /* Initialize the Environment Abstraction Layer (EAL). 8< */ 747 int ret = rte_eal_init(argc, argv); 748 749 if (ret < 0) 750 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n"); 751 /* >8 End of initialization of EAL. */ 752 753 memset(&ptp_data, '\0', sizeof(struct ptpv2_data_slave_ordinary)); 754 755 /* Parse specific arguments. 8< */ 756 argc -= ret; 757 argv += ret; 758 759 ret = ptp_parse_args(argc, argv); 760 if (ret < 0) 761 rte_exit(EXIT_FAILURE, "Error with PTP initialization\n"); 762 /* >8 End of parsing specific arguments. */ 763 764 /* Check that there is an even number of ports to send/receive on. */ 765 nb_ports = rte_eth_dev_count_avail(); 766 767 /* Creates a new mempool in memory to hold the mbufs. 8< */ 768 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports, 769 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 770 /* >8 End of a new mempool in memory to hold the mbufs. */ 771 772 if (mbuf_pool == NULL) 773 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); 774 775 /* Initialize all ports. 8< */ 776 RTE_ETH_FOREACH_DEV(portid) { 777 if ((ptp_enabled_port_mask & (1 << portid)) != 0) { 778 if (port_init(portid, mbuf_pool) == 0) { 779 ptp_enabled_ports[ptp_enabled_port_nb] = portid; 780 ptp_enabled_port_nb++; 781 } else { 782 rte_exit(EXIT_FAILURE, 783 "Cannot init port %"PRIu8 "\n", 784 portid); 785 } 786 } else 787 printf("Skipping disabled port %u\n", portid); 788 } 789 /* >8 End of initialization of all ports. */ 790 791 if (ptp_enabled_port_nb == 0) { 792 rte_exit(EXIT_FAILURE, 793 "All available ports are disabled." 794 " Please set portmask.\n"); 795 } 796 797 if (rte_lcore_count() > 1) 798 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n"); 799 800 /* Call lcore_main on the main core only. */ 801 lcore_main(); 802 803 /* clean up the EAL */ 804 rte_eal_cleanup(); 805 806 return 0; 807 } 808