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 <stdlib.h> 13 #include <inttypes.h> 14 #include <rte_eal.h> 15 #include <rte_ethdev.h> 16 #include <rte_cycles.h> 17 #include <rte_lcore.h> 18 #include <rte_mbuf.h> 19 #include <rte_ip.h> 20 #include <limits.h> 21 #include <sys/time.h> 22 #include <getopt.h> 23 #include <signal.h> 24 25 static volatile bool force_quit; 26 27 #define RX_RING_SIZE 1024 28 #define TX_RING_SIZE 1024 29 30 #define NUM_MBUFS 8191 31 #define MBUF_CACHE_SIZE 250 32 33 /* Values for the PTP messageType field. */ 34 #define SYNC 0x0 35 #define DELAY_REQ 0x1 36 #define PDELAY_REQ 0x2 37 #define PDELAY_RESP 0x3 38 #define FOLLOW_UP 0x8 39 #define DELAY_RESP 0x9 40 #define PDELAY_RESP_FOLLOW_UP 0xA 41 #define ANNOUNCE 0xB 42 #define SIGNALING 0xC 43 #define MANAGEMENT 0xD 44 45 #define NSEC_PER_SEC 1000000000L 46 #define KERNEL_TIME_ADJUST_LIMIT 20000 47 #define PTP_PROTOCOL 0x88F7 48 49 struct rte_mempool *mbuf_pool; 50 uint32_t ptp_enabled_port_mask; 51 uint8_t ptp_enabled_port_nb; 52 static uint8_t ptp_enabled_ports[RTE_MAX_ETHPORTS]; 53 54 static const struct rte_ether_addr ether_multicast = { 55 .addr_bytes = {0x01, 0x1b, 0x19, 0x0, 0x0, 0x0} 56 }; 57 58 /* Structs used for PTP handling. */ 59 struct tstamp { 60 uint16_t sec_msb; 61 uint32_t sec_lsb; 62 uint32_t ns; 63 } __rte_packed; 64 65 struct clock_id { 66 uint8_t id[8]; 67 }; 68 69 struct port_id { 70 struct clock_id clock_id; 71 uint16_t port_number; 72 } __rte_packed; 73 74 struct ptp_header { 75 uint8_t msg_type; 76 uint8_t ver; 77 uint16_t message_length; 78 uint8_t domain_number; 79 uint8_t reserved1; 80 uint8_t flag_field[2]; 81 int64_t correction; 82 uint32_t reserved2; 83 struct port_id source_port_id; 84 uint16_t seq_id; 85 uint8_t control; 86 int8_t log_message_interval; 87 } __rte_packed; 88 89 struct sync_msg { 90 struct ptp_header hdr; 91 struct tstamp origin_tstamp; 92 } __rte_packed; 93 94 struct follow_up_msg { 95 struct ptp_header hdr; 96 struct tstamp precise_origin_tstamp; 97 uint8_t suffix[]; 98 } __rte_packed; 99 100 struct delay_req_msg { 101 struct ptp_header hdr; 102 struct tstamp origin_tstamp; 103 } __rte_packed; 104 105 struct delay_resp_msg { 106 struct ptp_header hdr; 107 struct tstamp rx_tstamp; 108 struct port_id req_port_id; 109 uint8_t suffix[]; 110 } __rte_packed; 111 112 struct ptp_message { 113 union { 114 struct ptp_header header; 115 struct sync_msg sync; 116 struct delay_req_msg delay_req; 117 struct follow_up_msg follow_up; 118 struct delay_resp_msg delay_resp; 119 } __rte_packed; 120 }; 121 122 struct ptpv2_data_slave_ordinary { 123 struct rte_mbuf *m; 124 struct timespec tstamp1; 125 struct timespec tstamp2; 126 struct timespec tstamp3; 127 struct timespec tstamp4; 128 struct clock_id client_clock_id; 129 struct clock_id master_clock_id; 130 struct timeval new_adj; 131 int64_t delta; 132 uint16_t portid; 133 uint16_t seqID_SYNC; 134 uint16_t seqID_FOLLOWUP; 135 uint8_t ptpset; 136 uint8_t kernel_time_set; 137 uint16_t current_ptp_port; 138 }; 139 140 static struct ptpv2_data_slave_ordinary ptp_data; 141 142 static inline uint64_t timespec64_to_ns(const struct timespec *ts) 143 { 144 return ((uint64_t) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec; 145 } 146 147 static struct timeval 148 ns_to_timeval(int64_t nsec) 149 { 150 struct timespec t_spec = {0, 0}; 151 struct timeval t_eval = {0, 0}; 152 int32_t rem; 153 154 if (nsec == 0) 155 return t_eval; 156 rem = nsec % NSEC_PER_SEC; 157 t_spec.tv_sec = nsec / NSEC_PER_SEC; 158 159 if (rem < 0) { 160 t_spec.tv_sec--; 161 rem += NSEC_PER_SEC; 162 } 163 164 t_spec.tv_nsec = rem; 165 t_eval.tv_sec = t_spec.tv_sec; 166 t_eval.tv_usec = t_spec.tv_nsec / 1000; 167 168 return t_eval; 169 } 170 171 /* 172 * Initializes a given port using global settings and with the RX buffers 173 * coming from the mbuf_pool passed as a parameter. 174 */ 175 static inline int 176 port_init(uint16_t port, struct rte_mempool *mbuf_pool) 177 { 178 struct rte_eth_dev_info dev_info; 179 struct rte_eth_conf port_conf; 180 const uint16_t rx_rings = 1; 181 const uint16_t tx_rings = 1; 182 int retval; 183 uint16_t q; 184 uint16_t nb_rxd = RX_RING_SIZE; 185 uint16_t nb_txd = TX_RING_SIZE; 186 187 if (!rte_eth_dev_is_valid_port(port)) 188 return -1; 189 190 memset(&port_conf, 0, sizeof(struct rte_eth_conf)); 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 & RTE_ETH_RX_OFFLOAD_TIMESTAMP) 201 port_conf.rxmode.offloads |= RTE_ETH_RX_OFFLOAD_TIMESTAMP; 202 203 if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) 204 port_conf.txmode.offloads |= 205 RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE; 206 /* Force full Tx path in the driver, required for IEEE1588 */ 207 port_conf.txmode.offloads |= RTE_ETH_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 = rte_pktmbuf_mtod_offset(ptp_data->m, struct ptp_header *, 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 delay_req_msg *req_msg; 394 struct rte_mbuf *created_pkt; 395 struct tstamp *origin_tstamp; 396 struct rte_ether_addr eth_multicast = ether_multicast; 397 size_t pkt_size; 398 int wait_us; 399 struct rte_mbuf *m = ptp_data->m; 400 int ret; 401 402 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 403 ptp_hdr = rte_pktmbuf_mtod_offset(m, struct ptp_header *, 404 sizeof(struct rte_ether_hdr)); 405 if (memcmp(&ptp_data->master_clock_id, 406 &ptp_hdr->source_port_id.clock_id, 407 sizeof(struct clock_id)) != 0) 408 return; 409 410 ptp_data->seqID_FOLLOWUP = rte_be_to_cpu_16(ptp_hdr->seq_id); 411 ptp_msg = rte_pktmbuf_mtod_offset(m, struct ptp_message *, 412 sizeof(struct rte_ether_hdr)); 413 414 origin_tstamp = &ptp_msg->follow_up.precise_origin_tstamp; 415 ptp_data->tstamp1.tv_nsec = ntohl(origin_tstamp->ns); 416 ptp_data->tstamp1.tv_sec = 417 ((uint64_t)ntohl(origin_tstamp->sec_lsb)) | 418 (((uint64_t)ntohs(origin_tstamp->sec_msb)) << 32); 419 420 if (ptp_data->seqID_FOLLOWUP == ptp_data->seqID_SYNC) { 421 ret = rte_eth_macaddr_get(ptp_data->portid, ð_addr); 422 if (ret != 0) { 423 printf("\nCore %u: port %u failed to get MAC address: %s\n", 424 rte_lcore_id(), ptp_data->portid, 425 rte_strerror(-ret)); 426 return; 427 } 428 429 created_pkt = rte_pktmbuf_alloc(mbuf_pool); 430 pkt_size = sizeof(struct rte_ether_hdr) + 431 sizeof(struct delay_req_msg); 432 433 if (rte_pktmbuf_append(created_pkt, pkt_size) == NULL) { 434 rte_pktmbuf_free(created_pkt); 435 return; 436 } 437 created_pkt->data_len = pkt_size; 438 created_pkt->pkt_len = pkt_size; 439 eth_hdr = rte_pktmbuf_mtod(created_pkt, struct rte_ether_hdr *); 440 rte_ether_addr_copy(ð_addr, ð_hdr->src_addr); 441 442 /* Set multicast address 01-1B-19-00-00-00. */ 443 rte_ether_addr_copy(ð_multicast, ð_hdr->dst_addr); 444 445 eth_hdr->ether_type = htons(PTP_PROTOCOL); 446 req_msg = rte_pktmbuf_mtod_offset(created_pkt, 447 struct delay_req_msg *, sizeof(struct 448 rte_ether_hdr)); 449 450 req_msg->hdr.seq_id = htons(ptp_data->seqID_SYNC); 451 req_msg->hdr.msg_type = DELAY_REQ; 452 req_msg->hdr.ver = 2; 453 req_msg->hdr.control = 1; 454 req_msg->hdr.log_message_interval = 127; 455 req_msg->hdr.message_length = 456 htons(sizeof(struct delay_req_msg)); 457 req_msg->hdr.domain_number = ptp_hdr->domain_number; 458 459 /* Set up clock id. */ 460 client_clkid = 461 &req_msg->hdr.source_port_id.clock_id; 462 463 client_clkid->id[0] = eth_hdr->src_addr.addr_bytes[0]; 464 client_clkid->id[1] = eth_hdr->src_addr.addr_bytes[1]; 465 client_clkid->id[2] = eth_hdr->src_addr.addr_bytes[2]; 466 client_clkid->id[3] = 0xFF; 467 client_clkid->id[4] = 0xFE; 468 client_clkid->id[5] = eth_hdr->src_addr.addr_bytes[3]; 469 client_clkid->id[6] = eth_hdr->src_addr.addr_bytes[4]; 470 client_clkid->id[7] = eth_hdr->src_addr.addr_bytes[5]; 471 472 rte_memcpy(&ptp_data->client_clock_id, 473 client_clkid, 474 sizeof(struct clock_id)); 475 476 /* Enable flag for hardware timestamping. */ 477 created_pkt->ol_flags |= RTE_MBUF_F_TX_IEEE1588_TMST; 478 479 /*Read value from NIC to prevent latching with old value. */ 480 rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 481 &ptp_data->tstamp3); 482 483 /* Transmit the packet. */ 484 rte_eth_tx_burst(ptp_data->portid, 0, &created_pkt, 1); 485 486 wait_us = 0; 487 ptp_data->tstamp3.tv_nsec = 0; 488 ptp_data->tstamp3.tv_sec = 0; 489 490 /* Wait at least 1 us to read TX timestamp. */ 491 while ((rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 492 &ptp_data->tstamp3) < 0) && (wait_us < 1000)) { 493 rte_delay_us(1); 494 wait_us++; 495 } 496 } 497 } 498 499 /* 500 * Update the kernel time with the difference between it and the current NIC 501 * time. 502 */ 503 static inline void 504 update_kernel_time(void) 505 { 506 int64_t nsec; 507 struct timespec net_time, sys_time; 508 509 clock_gettime(CLOCK_REALTIME, &sys_time); 510 rte_eth_timesync_read_time(ptp_data.current_ptp_port, &net_time); 511 512 nsec = (int64_t)timespec64_to_ns(&net_time) - 513 (int64_t)timespec64_to_ns(&sys_time); 514 515 ptp_data.new_adj = ns_to_timeval(nsec); 516 517 /* 518 * If difference between kernel time and system time in NIC is too big 519 * (more than +/- 20 microseconds), use clock_settime to set directly 520 * the kernel time, as adjtime is better for small adjustments (takes 521 * longer to adjust the time). 522 */ 523 524 if (nsec > KERNEL_TIME_ADJUST_LIMIT || nsec < -KERNEL_TIME_ADJUST_LIMIT) 525 clock_settime(CLOCK_REALTIME, &net_time); 526 else 527 adjtime(&ptp_data.new_adj, 0); 528 529 530 } 531 532 /* 533 * Parse the DELAY_RESP message. 534 */ 535 static void 536 parse_drsp(struct ptpv2_data_slave_ordinary *ptp_data) 537 { 538 struct rte_mbuf *m = ptp_data->m; 539 struct ptp_message *ptp_msg; 540 struct tstamp *rx_tstamp; 541 uint16_t seq_id; 542 543 ptp_msg = rte_pktmbuf_mtod_offset(m, struct ptp_message *, 544 sizeof(struct rte_ether_hdr)); 545 seq_id = rte_be_to_cpu_16(ptp_msg->delay_resp.hdr.seq_id); 546 if (memcmp(&ptp_data->client_clock_id, 547 &ptp_msg->delay_resp.req_port_id.clock_id, 548 sizeof(struct clock_id)) == 0) { 549 if (seq_id == ptp_data->seqID_FOLLOWUP) { 550 rx_tstamp = &ptp_msg->delay_resp.rx_tstamp; 551 ptp_data->tstamp4.tv_nsec = ntohl(rx_tstamp->ns); 552 ptp_data->tstamp4.tv_sec = 553 ((uint64_t)ntohl(rx_tstamp->sec_lsb)) | 554 (((uint64_t)ntohs(rx_tstamp->sec_msb)) << 32); 555 556 /* Evaluate the delta for adjustment. */ 557 ptp_data->delta = delta_eval(ptp_data); 558 559 rte_eth_timesync_adjust_time(ptp_data->portid, 560 ptp_data->delta); 561 562 ptp_data->current_ptp_port = ptp_data->portid; 563 564 /* Update kernel time if enabled in app parameters. */ 565 if (ptp_data->kernel_time_set == 1) 566 update_kernel_time(); 567 568 569 570 } 571 } 572 } 573 574 /* This function processes PTP packets, implementing slave PTP IEEE1588 L2 575 * functionality. 576 */ 577 578 /* Parse ptp frames. 8< */ 579 static void 580 parse_ptp_frames(uint16_t portid, struct rte_mbuf *m) { 581 struct ptp_header *ptp_hdr; 582 struct rte_ether_hdr *eth_hdr; 583 uint16_t eth_type; 584 585 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 586 eth_type = rte_be_to_cpu_16(eth_hdr->ether_type); 587 588 if (eth_type == PTP_PROTOCOL) { 589 ptp_data.m = m; 590 ptp_data.portid = portid; 591 ptp_hdr = rte_pktmbuf_mtod_offset(m, struct ptp_header *, 592 sizeof(struct rte_ether_hdr)); 593 594 switch (ptp_hdr->msg_type) { 595 case SYNC: 596 parse_sync(&ptp_data, m->timesync); 597 break; 598 case FOLLOW_UP: 599 parse_fup(&ptp_data); 600 break; 601 case DELAY_RESP: 602 parse_drsp(&ptp_data); 603 print_clock_info(&ptp_data); 604 break; 605 default: 606 break; 607 } 608 } 609 } 610 /* >8 End of function processes PTP packets. */ 611 612 /* 613 * The lcore main. This is the main thread that does the work, reading from an 614 * input port and writing to an output port. 615 */ 616 static void 617 lcore_main(void) 618 { 619 uint16_t portid; 620 unsigned nb_rx; 621 struct rte_mbuf *m; 622 623 printf("\nCore %u Waiting for SYNC packets. [Ctrl+C to quit]\n", 624 rte_lcore_id()); 625 626 /* Run until the application is quit or killed. */ 627 628 while (!force_quit) { 629 /* Read packet from RX queues. 8< */ 630 for (portid = 0; portid < ptp_enabled_port_nb; portid++) { 631 632 portid = ptp_enabled_ports[portid]; 633 nb_rx = rte_eth_rx_burst(portid, 0, &m, 1); 634 635 if (likely(nb_rx == 0)) 636 continue; 637 638 /* Packet is parsed to determine which type. 8< */ 639 if (m->ol_flags & RTE_MBUF_F_RX_IEEE1588_PTP) 640 parse_ptp_frames(portid, m); 641 /* >8 End of packet is parsed to determine which type. */ 642 643 rte_pktmbuf_free(m); 644 } 645 /* >8 End of read packets from RX queues. */ 646 } 647 } 648 649 static void 650 print_usage(const char *prgname) 651 { 652 printf("%s [EAL options] -- -p PORTMASK -T VALUE\n" 653 " -T VALUE: 0 - Disable, 1 - Enable Linux Clock" 654 " Synchronization (0 default)\n" 655 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 656 prgname); 657 } 658 659 static int 660 ptp_parse_portmask(const char *portmask) 661 { 662 char *end = NULL; 663 unsigned long pm; 664 665 /* Parse the hexadecimal string. */ 666 pm = strtoul(portmask, &end, 16); 667 668 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 669 return 0; 670 671 return pm; 672 } 673 674 static int 675 parse_ptp_kernel(const char *param) 676 { 677 char *end = NULL; 678 unsigned long pm; 679 680 /* Parse the hexadecimal string. */ 681 pm = strtoul(param, &end, 16); 682 683 if ((param[0] == '\0') || (end == NULL) || (*end != '\0')) 684 return -1; 685 if (pm == 0) 686 return 0; 687 688 return 1; 689 } 690 691 /* Parse the commandline arguments. */ 692 static int 693 ptp_parse_args(int argc, char **argv) 694 { 695 int opt, ret; 696 char **argvopt; 697 int option_index; 698 char *prgname = argv[0]; 699 static struct option lgopts[] = { {NULL, 0, 0, 0} }; 700 701 argvopt = argv; 702 703 while ((opt = getopt_long(argc, argvopt, "p:T:", 704 lgopts, &option_index)) != EOF) { 705 706 switch (opt) { 707 708 /* Portmask. */ 709 case 'p': 710 ptp_enabled_port_mask = ptp_parse_portmask(optarg); 711 if (ptp_enabled_port_mask == 0) { 712 printf("invalid portmask\n"); 713 print_usage(prgname); 714 return -1; 715 } 716 break; 717 /* Time synchronization. */ 718 case 'T': 719 ret = parse_ptp_kernel(optarg); 720 if (ret < 0) { 721 print_usage(prgname); 722 return -1; 723 } 724 725 ptp_data.kernel_time_set = ret; 726 break; 727 728 default: 729 print_usage(prgname); 730 return -1; 731 } 732 } 733 734 argv[optind-1] = prgname; 735 736 optind = 1; /* Reset getopt lib. */ 737 738 return 0; 739 } 740 741 static void 742 signal_handler(int signum) 743 { 744 if (signum == SIGINT || signum == SIGTERM) 745 force_quit = true; 746 } 747 748 /* 749 * The main function, which does initialization and calls the per-lcore 750 * functions. 751 */ 752 int 753 main(int argc, char *argv[]) 754 { 755 unsigned nb_ports; 756 757 uint16_t portid; 758 759 /* Initialize the Environment Abstraction Layer (EAL). 8< */ 760 int ret = rte_eal_init(argc, argv); 761 762 if (ret < 0) 763 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n"); 764 /* >8 End of initialization of EAL. */ 765 766 memset(&ptp_data, '\0', sizeof(struct ptpv2_data_slave_ordinary)); 767 768 /* Parse specific arguments. 8< */ 769 argc -= ret; 770 argv += ret; 771 772 force_quit = false; 773 signal(SIGINT, signal_handler); 774 signal(SIGTERM, signal_handler); 775 776 ret = ptp_parse_args(argc, argv); 777 if (ret < 0) 778 rte_exit(EXIT_FAILURE, "Error with PTP initialization\n"); 779 /* >8 End of parsing specific arguments. */ 780 781 /* Check that there is an even number of ports to send/receive on. */ 782 nb_ports = rte_eth_dev_count_avail(); 783 784 /* Creates a new mempool in memory to hold the mbufs. 8< */ 785 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports, 786 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 787 /* >8 End of a new mempool in memory to hold the mbufs. */ 788 789 if (mbuf_pool == NULL) 790 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); 791 792 /* Initialize all ports. 8< */ 793 RTE_ETH_FOREACH_DEV(portid) { 794 if ((ptp_enabled_port_mask & (1 << portid)) != 0) { 795 if (port_init(portid, mbuf_pool) == 0) { 796 ptp_enabled_ports[ptp_enabled_port_nb] = portid; 797 ptp_enabled_port_nb++; 798 } else { 799 rte_exit(EXIT_FAILURE, 800 "Cannot init port %"PRIu8 "\n", 801 portid); 802 } 803 } else 804 printf("Skipping disabled port %u\n", portid); 805 } 806 /* >8 End of initialization of all ports. */ 807 808 if (ptp_enabled_port_nb == 0) { 809 rte_exit(EXIT_FAILURE, 810 "All available ports are disabled." 811 " Please set portmask.\n"); 812 } 813 814 if (rte_lcore_count() > 1) 815 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n"); 816 817 /* Call lcore_main on the main core only. */ 818 lcore_main(); 819 820 RTE_ETH_FOREACH_DEV(portid) { 821 if ((ptp_enabled_port_mask & (1 << portid)) == 0) 822 continue; 823 824 /* Disable timesync timestamping for the Ethernet device */ 825 rte_eth_timesync_disable(portid); 826 827 ret = rte_eth_dev_stop(portid); 828 if (ret != 0) 829 printf("rte_eth_dev_stop: err=%d, port=%d\n", ret, portid); 830 831 rte_eth_dev_close(portid); 832 } 833 834 /* clean up the EAL */ 835 rte_eal_cleanup(); 836 837 return 0; 838 } 839