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 __rte_packed_begin tstamp { 60 uint16_t sec_msb; 61 uint32_t sec_lsb; 62 uint32_t ns; 63 } __rte_packed_end; 64 65 struct clock_id { 66 uint8_t id[8]; 67 }; 68 69 struct __rte_packed_begin port_id { 70 struct clock_id clock_id; 71 uint16_t port_number; 72 } __rte_packed_end; 73 74 struct __rte_packed_begin 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_end; 88 89 struct __rte_packed_begin sync_msg { 90 struct ptp_header hdr; 91 struct tstamp origin_tstamp; 92 } __rte_packed_end; 93 94 struct __rte_packed_begin follow_up_msg { 95 struct ptp_header hdr; 96 struct tstamp precise_origin_tstamp; 97 uint8_t suffix[]; 98 } __rte_packed_end; 99 100 struct __rte_packed_begin delay_req_msg { 101 struct ptp_header hdr; 102 struct tstamp origin_tstamp; 103 } __rte_packed_end; 104 105 struct __rte_packed_begin 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_end; 111 112 struct ptp_message { 113 union __rte_packed_begin { 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_end; 120 }; 121 122 struct ptpv2_time_receiver_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 transmitter_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_time_receiver_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_time_receiver_ordinary *ptp_data) 270 { 271 int64_t nsec; 272 struct timespec net_time, sys_time; 273 274 printf("time transmitter clock id: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 275 ptp_data->transmitter_clock_id.id[0], 276 ptp_data->transmitter_clock_id.id[1], 277 ptp_data->transmitter_clock_id.id[2], 278 ptp_data->transmitter_clock_id.id[3], 279 ptp_data->transmitter_clock_id.id[4], 280 ptp_data->transmitter_clock_id.id[5], 281 ptp_data->transmitter_clock_id.id[6], 282 ptp_data->transmitter_clock_id.id[7]); 283 284 printf("\nT2 - time receiver clock. %lds %ldns", 285 (ptp_data->tstamp2.tv_sec), 286 (ptp_data->tstamp2.tv_nsec)); 287 288 printf("\nT1 - time transmitter clock. %lds %ldns ", 289 ptp_data->tstamp1.tv_sec, 290 (ptp_data->tstamp1.tv_nsec)); 291 292 printf("\nT3 - time receiver clock. %lds %ldns", 293 ptp_data->tstamp3.tv_sec, 294 (ptp_data->tstamp3.tv_nsec)); 295 296 printf("\nT4 - time transmitter clock. %lds %ldns\n", 297 ptp_data->tstamp4.tv_sec, 298 (ptp_data->tstamp4.tv_nsec)); 299 300 printf("\nDelta between transmitter and receiver 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, 305 &net_time); 306 307 time_t ts = net_time.tv_sec; 308 309 printf("\n\nComparison between Linux kernel Time and PTP:"); 310 311 printf("\nCurrent PTP Time: %.24s %.9ld ns", 312 ctime(&ts), net_time.tv_nsec); 313 314 nsec = (int64_t)timespec64_to_ns(&net_time) - 315 (int64_t)timespec64_to_ns(&sys_time); 316 ptp_data->new_adj = ns_to_timeval(nsec); 317 318 gettimeofday(&ptp_data->new_adj, NULL); 319 320 time_t tp = ptp_data->new_adj.tv_sec; 321 322 printf("\nCurrent SYS Time: %.24s %.6ld ns", 323 ctime(&tp), ptp_data->new_adj.tv_usec); 324 325 printf("\nDelta between PTP and Linux Kernel time:%"PRId64"ns\n", 326 nsec); 327 328 printf("[Ctrl+C to quit]\n"); 329 330 /* Clear screen and put cursor in column 1, row 1 */ 331 printf("\033[2J\033[1;1H"); 332 } 333 334 static int64_t 335 delta_eval(struct ptpv2_time_receiver_ordinary *ptp_data) 336 { 337 int64_t delta; 338 uint64_t t1 = 0; 339 uint64_t t2 = 0; 340 uint64_t t3 = 0; 341 uint64_t t4 = 0; 342 343 t1 = timespec64_to_ns(&ptp_data->tstamp1); 344 t2 = timespec64_to_ns(&ptp_data->tstamp2); 345 t3 = timespec64_to_ns(&ptp_data->tstamp3); 346 t4 = timespec64_to_ns(&ptp_data->tstamp4); 347 348 delta = -((int64_t)((t2 - t1) - (t4 - t3))) / 2; 349 350 return delta; 351 } 352 353 /* 354 * Parse the PTP SYNC message. 355 */ 356 static void 357 parse_sync(struct ptpv2_time_receiver_ordinary *ptp_data, uint16_t rx_tstamp_idx) 358 { 359 struct ptp_header *ptp_hdr; 360 361 ptp_hdr = rte_pktmbuf_mtod_offset(ptp_data->m, struct ptp_header *, 362 sizeof(struct rte_ether_hdr)); 363 ptp_data->seqID_SYNC = rte_be_to_cpu_16(ptp_hdr->seq_id); 364 365 if (ptp_data->ptpset == 0) { 366 rte_memcpy(&ptp_data->transmitter_clock_id, 367 &ptp_hdr->source_port_id.clock_id, 368 sizeof(struct clock_id)); 369 ptp_data->ptpset = 1; 370 } 371 372 if (memcmp(&ptp_hdr->source_port_id.clock_id, 373 &ptp_hdr->source_port_id.clock_id, 374 sizeof(struct clock_id)) == 0) { 375 376 if (ptp_data->ptpset == 1) 377 rte_eth_timesync_read_rx_timestamp(ptp_data->portid, 378 &ptp_data->tstamp2, rx_tstamp_idx); 379 } 380 381 } 382 383 /* 384 * Parse the PTP FOLLOWUP message and send DELAY_REQ to the main clock. 385 */ 386 static void 387 parse_fup(struct ptpv2_time_receiver_ordinary *ptp_data) 388 { 389 struct rte_ether_hdr *eth_hdr; 390 struct rte_ether_addr eth_addr; 391 struct ptp_header *ptp_hdr; 392 struct clock_id *client_clkid; 393 struct ptp_message *ptp_msg; 394 struct delay_req_msg *req_msg; 395 struct rte_mbuf *created_pkt; 396 struct tstamp *origin_tstamp; 397 struct rte_ether_addr eth_multicast = ether_multicast; 398 size_t pkt_size; 399 int wait_us; 400 struct rte_mbuf *m = ptp_data->m; 401 int ret; 402 403 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 404 ptp_hdr = rte_pktmbuf_mtod_offset(m, struct ptp_header *, 405 sizeof(struct rte_ether_hdr)); 406 if (memcmp(&ptp_data->transmitter_clock_id, 407 &ptp_hdr->source_port_id.clock_id, 408 sizeof(struct clock_id)) != 0) 409 return; 410 411 ptp_data->seqID_FOLLOWUP = rte_be_to_cpu_16(ptp_hdr->seq_id); 412 ptp_msg = rte_pktmbuf_mtod_offset(m, struct ptp_message *, 413 sizeof(struct rte_ether_hdr)); 414 415 origin_tstamp = &ptp_msg->follow_up.precise_origin_tstamp; 416 ptp_data->tstamp1.tv_nsec = ntohl(origin_tstamp->ns); 417 ptp_data->tstamp1.tv_sec = 418 ((uint64_t)ntohl(origin_tstamp->sec_lsb)) | 419 (((uint64_t)ntohs(origin_tstamp->sec_msb)) << 32); 420 421 if (ptp_data->seqID_FOLLOWUP == ptp_data->seqID_SYNC) { 422 ret = rte_eth_macaddr_get(ptp_data->portid, ð_addr); 423 if (ret != 0) { 424 printf("\nCore %u: port %u failed to get MAC address: %s\n", 425 rte_lcore_id(), ptp_data->portid, 426 rte_strerror(-ret)); 427 return; 428 } 429 430 created_pkt = rte_pktmbuf_alloc(mbuf_pool); 431 pkt_size = sizeof(struct rte_ether_hdr) + 432 sizeof(struct delay_req_msg); 433 434 if (rte_pktmbuf_append(created_pkt, pkt_size) == NULL) { 435 rte_pktmbuf_free(created_pkt); 436 return; 437 } 438 created_pkt->data_len = pkt_size; 439 created_pkt->pkt_len = pkt_size; 440 eth_hdr = rte_pktmbuf_mtod(created_pkt, struct rte_ether_hdr *); 441 rte_ether_addr_copy(ð_addr, ð_hdr->src_addr); 442 443 /* Set multicast address 01-1B-19-00-00-00. */ 444 rte_ether_addr_copy(ð_multicast, ð_hdr->dst_addr); 445 446 eth_hdr->ether_type = htons(PTP_PROTOCOL); 447 req_msg = rte_pktmbuf_mtod_offset(created_pkt, 448 struct delay_req_msg *, sizeof(struct 449 rte_ether_hdr)); 450 451 req_msg->hdr.seq_id = htons(ptp_data->seqID_SYNC); 452 req_msg->hdr.msg_type = DELAY_REQ; 453 req_msg->hdr.ver = 2; 454 req_msg->hdr.control = 1; 455 req_msg->hdr.log_message_interval = 127; 456 req_msg->hdr.message_length = 457 htons(sizeof(struct delay_req_msg)); 458 req_msg->hdr.domain_number = ptp_hdr->domain_number; 459 460 /* Set up clock id. */ 461 client_clkid = 462 &req_msg->hdr.source_port_id.clock_id; 463 464 client_clkid->id[0] = eth_hdr->src_addr.addr_bytes[0]; 465 client_clkid->id[1] = eth_hdr->src_addr.addr_bytes[1]; 466 client_clkid->id[2] = eth_hdr->src_addr.addr_bytes[2]; 467 client_clkid->id[3] = 0xFF; 468 client_clkid->id[4] = 0xFE; 469 client_clkid->id[5] = eth_hdr->src_addr.addr_bytes[3]; 470 client_clkid->id[6] = eth_hdr->src_addr.addr_bytes[4]; 471 client_clkid->id[7] = eth_hdr->src_addr.addr_bytes[5]; 472 473 rte_memcpy(&ptp_data->client_clock_id, 474 client_clkid, 475 sizeof(struct clock_id)); 476 477 /* Enable flag for hardware timestamping. */ 478 created_pkt->ol_flags |= RTE_MBUF_F_TX_IEEE1588_TMST; 479 480 /*Read value from NIC to prevent latching with old value. */ 481 rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 482 &ptp_data->tstamp3); 483 484 /* Transmit the packet. */ 485 rte_eth_tx_burst(ptp_data->portid, 0, &created_pkt, 1); 486 487 wait_us = 0; 488 ptp_data->tstamp3.tv_nsec = 0; 489 ptp_data->tstamp3.tv_sec = 0; 490 491 /* Wait at least 1 us to read TX timestamp. */ 492 while ((rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 493 &ptp_data->tstamp3) < 0) && (wait_us < 1000)) { 494 rte_delay_us(1); 495 wait_us++; 496 } 497 } 498 } 499 500 /* 501 * Update the kernel time with the difference between it and the current NIC 502 * time. 503 */ 504 static inline void 505 update_kernel_time(void) 506 { 507 int64_t nsec; 508 struct timespec net_time, sys_time; 509 510 clock_gettime(CLOCK_REALTIME, &sys_time); 511 rte_eth_timesync_read_time(ptp_data.current_ptp_port, &net_time); 512 513 nsec = (int64_t)timespec64_to_ns(&net_time) - 514 (int64_t)timespec64_to_ns(&sys_time); 515 516 ptp_data.new_adj = ns_to_timeval(nsec); 517 518 /* 519 * If difference between kernel time and system time in NIC is too big 520 * (more than +/- 20 microseconds), use clock_settime to set directly 521 * the kernel time, as adjtime is better for small adjustments (takes 522 * longer to adjust the time). 523 */ 524 525 if (nsec > KERNEL_TIME_ADJUST_LIMIT || nsec < -KERNEL_TIME_ADJUST_LIMIT) 526 clock_settime(CLOCK_REALTIME, &net_time); 527 else 528 adjtime(&ptp_data.new_adj, 0); 529 530 531 } 532 533 /* 534 * Parse the DELAY_RESP message. 535 */ 536 static void 537 parse_drsp(struct ptpv2_time_receiver_ordinary *ptp_data) 538 { 539 struct rte_mbuf *m = ptp_data->m; 540 struct ptp_message *ptp_msg; 541 struct tstamp *rx_tstamp; 542 uint16_t seq_id; 543 544 ptp_msg = rte_pktmbuf_mtod_offset(m, struct ptp_message *, 545 sizeof(struct rte_ether_hdr)); 546 seq_id = rte_be_to_cpu_16(ptp_msg->delay_resp.hdr.seq_id); 547 if (memcmp(&ptp_data->client_clock_id, 548 &ptp_msg->delay_resp.req_port_id.clock_id, 549 sizeof(struct clock_id)) == 0) { 550 if (seq_id == ptp_data->seqID_FOLLOWUP) { 551 rx_tstamp = &ptp_msg->delay_resp.rx_tstamp; 552 ptp_data->tstamp4.tv_nsec = ntohl(rx_tstamp->ns); 553 ptp_data->tstamp4.tv_sec = 554 ((uint64_t)ntohl(rx_tstamp->sec_lsb)) | 555 (((uint64_t)ntohs(rx_tstamp->sec_msb)) << 32); 556 557 /* Evaluate the delta for adjustment. */ 558 ptp_data->delta = delta_eval(ptp_data); 559 560 rte_eth_timesync_adjust_time(ptp_data->portid, 561 ptp_data->delta); 562 563 ptp_data->current_ptp_port = ptp_data->portid; 564 565 /* Update kernel time if enabled in app parameters. */ 566 if (ptp_data->kernel_time_set == 1) 567 update_kernel_time(); 568 569 570 571 } 572 } 573 } 574 575 /* This function processes PTP packets, implementing time receiver PTP IEEE1588 L2 576 * functionality. 577 */ 578 579 /* Parse ptp frames. 8< */ 580 static void 581 parse_ptp_frames(uint16_t portid, struct rte_mbuf *m) { 582 struct ptp_header *ptp_hdr; 583 struct rte_ether_hdr *eth_hdr; 584 uint16_t eth_type; 585 586 eth_hdr = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 587 eth_type = rte_be_to_cpu_16(eth_hdr->ether_type); 588 589 if (eth_type == PTP_PROTOCOL) { 590 ptp_data.m = m; 591 ptp_data.portid = portid; 592 ptp_hdr = rte_pktmbuf_mtod_offset(m, struct ptp_header *, 593 sizeof(struct rte_ether_hdr)); 594 595 switch (ptp_hdr->msg_type) { 596 case SYNC: 597 parse_sync(&ptp_data, m->timesync); 598 break; 599 case FOLLOW_UP: 600 parse_fup(&ptp_data); 601 break; 602 case DELAY_RESP: 603 parse_drsp(&ptp_data); 604 print_clock_info(&ptp_data); 605 break; 606 default: 607 break; 608 } 609 } 610 } 611 /* >8 End of function processes PTP packets. */ 612 613 /* 614 * The lcore main. This is the main thread that does the work, reading from an 615 * input port and writing to an output port. 616 */ 617 static void 618 lcore_main(void) 619 { 620 uint16_t portid; 621 unsigned nb_rx; 622 struct rte_mbuf *m; 623 624 printf("\nCore %u Waiting for SYNC packets. [Ctrl+C to quit]\n", 625 rte_lcore_id()); 626 627 /* Run until the application is quit or killed. */ 628 629 while (!force_quit) { 630 /* Read packet from RX queues. 8< */ 631 for (portid = 0; portid < ptp_enabled_port_nb; portid++) { 632 633 portid = ptp_enabled_ports[portid]; 634 nb_rx = rte_eth_rx_burst(portid, 0, &m, 1); 635 636 if (likely(nb_rx == 0)) 637 continue; 638 639 /* Packet is parsed to determine which type. 8< */ 640 if (m->ol_flags & RTE_MBUF_F_RX_IEEE1588_PTP) 641 parse_ptp_frames(portid, m); 642 /* >8 End of packet is parsed to determine which type. */ 643 644 rte_pktmbuf_free(m); 645 } 646 /* >8 End of read packets from RX queues. */ 647 } 648 } 649 650 static void 651 print_usage(const char *prgname) 652 { 653 printf("%s [EAL options] -- -p PORTMASK -T VALUE\n" 654 " -T VALUE: 0 - Disable, 1 - Enable Linux Clock" 655 " Synchronization (0 default)\n" 656 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 657 prgname); 658 } 659 660 static int 661 ptp_parse_portmask(const char *portmask) 662 { 663 char *end = NULL; 664 unsigned long pm; 665 666 /* Parse the hexadecimal string. */ 667 pm = strtoul(portmask, &end, 16); 668 669 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 670 return 0; 671 672 return pm; 673 } 674 675 static int 676 parse_ptp_kernel(const char *param) 677 { 678 char *end = NULL; 679 unsigned long pm; 680 681 /* Parse the hexadecimal string. */ 682 pm = strtoul(param, &end, 16); 683 684 if ((param[0] == '\0') || (end == NULL) || (*end != '\0')) 685 return -1; 686 if (pm == 0) 687 return 0; 688 689 return 1; 690 } 691 692 /* Parse the commandline arguments. */ 693 static int 694 ptp_parse_args(int argc, char **argv) 695 { 696 int opt, ret; 697 char **argvopt; 698 int option_index; 699 char *prgname = argv[0]; 700 static struct option lgopts[] = { {NULL, 0, 0, 0} }; 701 702 argvopt = argv; 703 704 while ((opt = getopt_long(argc, argvopt, "p:T:", 705 lgopts, &option_index)) != EOF) { 706 707 switch (opt) { 708 709 /* Portmask. */ 710 case 'p': 711 ptp_enabled_port_mask = ptp_parse_portmask(optarg); 712 if (ptp_enabled_port_mask == 0) { 713 printf("invalid portmask\n"); 714 print_usage(prgname); 715 return -1; 716 } 717 break; 718 /* Time synchronization. */ 719 case 'T': 720 ret = parse_ptp_kernel(optarg); 721 if (ret < 0) { 722 print_usage(prgname); 723 return -1; 724 } 725 726 ptp_data.kernel_time_set = ret; 727 break; 728 729 default: 730 print_usage(prgname); 731 return -1; 732 } 733 } 734 735 argv[optind-1] = prgname; 736 737 optind = 1; /* Reset getopt lib. */ 738 739 return 0; 740 } 741 742 static void 743 signal_handler(int signum) 744 { 745 if (signum == SIGINT || signum == SIGTERM) 746 force_quit = true; 747 } 748 749 /* 750 * The main function, which does initialization and calls the per-lcore 751 * functions. 752 */ 753 int 754 main(int argc, char *argv[]) 755 { 756 unsigned nb_ports; 757 758 uint16_t portid; 759 760 /* Initialize the Environment Abstraction Layer (EAL). 8< */ 761 int ret = rte_eal_init(argc, argv); 762 763 if (ret < 0) 764 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n"); 765 /* >8 End of initialization of EAL. */ 766 767 memset(&ptp_data, 0, sizeof(struct ptpv2_time_receiver_ordinary)); 768 769 /* Parse specific arguments. 8< */ 770 argc -= ret; 771 argv += ret; 772 773 force_quit = false; 774 signal(SIGINT, signal_handler); 775 signal(SIGTERM, signal_handler); 776 777 ret = ptp_parse_args(argc, argv); 778 if (ret < 0) 779 rte_exit(EXIT_FAILURE, "Error with PTP initialization\n"); 780 /* >8 End of parsing specific arguments. */ 781 782 /* Check that there is an even number of ports to send/receive on. */ 783 nb_ports = rte_eth_dev_count_avail(); 784 785 /* Creates a new mempool in memory to hold the mbufs. 8< */ 786 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports, 787 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 788 /* >8 End of a new mempool in memory to hold the mbufs. */ 789 790 if (mbuf_pool == NULL) 791 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); 792 793 /* Initialize all ports. 8< */ 794 RTE_ETH_FOREACH_DEV(portid) { 795 if ((ptp_enabled_port_mask & (1 << portid)) != 0) { 796 if (port_init(portid, mbuf_pool) == 0) { 797 ptp_enabled_ports[ptp_enabled_port_nb] = portid; 798 ptp_enabled_port_nb++; 799 } else { 800 rte_exit(EXIT_FAILURE, 801 "Cannot init port %"PRIu8 "\n", 802 portid); 803 } 804 } else 805 printf("Skipping disabled port %u\n", portid); 806 } 807 /* >8 End of initialization of all ports. */ 808 809 if (ptp_enabled_port_nb == 0) { 810 rte_exit(EXIT_FAILURE, 811 "All available ports are disabled." 812 " Please set portmask.\n"); 813 } 814 815 if (rte_lcore_count() > 1) 816 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n"); 817 818 /* Call lcore_main on the main core only. */ 819 lcore_main(); 820 821 RTE_ETH_FOREACH_DEV(portid) { 822 if ((ptp_enabled_port_mask & (1 << portid)) == 0) 823 continue; 824 825 /* Disable timesync timestamping for the Ethernet device */ 826 rte_eth_timesync_disable(portid); 827 828 ret = rte_eth_dev_stop(portid); 829 if (ret != 0) 830 printf("rte_eth_dev_stop: err=%d, port=%d\n", ret, portid); 831 832 rte_eth_dev_close(portid); 833 } 834 835 /* clean up the EAL */ 836 rte_eal_cleanup(); 837 838 return 0; 839 } 840