1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2015 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * This application is a simple Layer 2 PTP v2 client. It shows delta values 36 * which are used to synchronize the PHC clock. if the "-T 1" parameter is 37 * passed to the application the Linux kernel clock is also synchronized. 38 */ 39 40 #include <stdint.h> 41 #include <inttypes.h> 42 #include <rte_eal.h> 43 #include <rte_ethdev.h> 44 #include <rte_cycles.h> 45 #include <rte_lcore.h> 46 #include <rte_mbuf.h> 47 #include <rte_ip.h> 48 #include <limits.h> 49 #include <sys/time.h> 50 #include <getopt.h> 51 52 #define RX_RING_SIZE 128 53 #define TX_RING_SIZE 512 54 55 #define NUM_MBUFS 8191 56 #define MBUF_CACHE_SIZE 250 57 58 /* Values for the PTP messageType field. */ 59 #define SYNC 0x0 60 #define DELAY_REQ 0x1 61 #define PDELAY_REQ 0x2 62 #define PDELAY_RESP 0x3 63 #define FOLLOW_UP 0x8 64 #define DELAY_RESP 0x9 65 #define PDELAY_RESP_FOLLOW_UP 0xA 66 #define ANNOUNCE 0xB 67 #define SIGNALING 0xC 68 #define MANAGEMENT 0xD 69 70 #define NSEC_PER_SEC 1000000000L 71 #define KERNEL_TIME_ADJUST_LIMIT 20000 72 #define PTP_PROTOCOL 0x88F7 73 74 struct rte_mempool *mbuf_pool; 75 uint32_t ptp_enabled_port_mask; 76 uint8_t ptp_enabled_port_nb; 77 static uint8_t ptp_enabled_ports[RTE_MAX_ETHPORTS]; 78 79 static const struct rte_eth_conf port_conf_default = { 80 .rxmode = { .max_rx_pkt_len = ETHER_MAX_LEN } 81 }; 82 83 static const struct ether_addr ether_multicast = { 84 .addr_bytes = {0x01, 0x1b, 0x19, 0x0, 0x0, 0x0} 85 }; 86 87 /* Structs used for PTP handling. */ 88 struct tstamp { 89 uint16_t sec_msb; 90 uint32_t sec_lsb; 91 uint32_t ns; 92 } __attribute__((packed)); 93 94 struct clock_id { 95 uint8_t id[8]; 96 }; 97 98 struct port_id { 99 struct clock_id clock_id; 100 uint16_t port_number; 101 } __attribute__((packed)); 102 103 struct ptp_header { 104 uint8_t msg_type; 105 uint8_t ver; 106 uint16_t message_length; 107 uint8_t domain_number; 108 uint8_t reserved1; 109 uint8_t flag_field[2]; 110 int64_t correction; 111 uint32_t reserved2; 112 struct port_id source_port_id; 113 uint16_t seq_id; 114 uint8_t control; 115 int8_t log_message_interval; 116 } __attribute__((packed)); 117 118 struct sync_msg { 119 struct ptp_header hdr; 120 struct tstamp origin_tstamp; 121 } __attribute__((packed)); 122 123 struct follow_up_msg { 124 struct ptp_header hdr; 125 struct tstamp precise_origin_tstamp; 126 uint8_t suffix[0]; 127 } __attribute__((packed)); 128 129 struct delay_req_msg { 130 struct ptp_header hdr; 131 struct tstamp origin_tstamp; 132 } __attribute__((packed)); 133 134 struct delay_resp_msg { 135 struct ptp_header hdr; 136 struct tstamp rx_tstamp; 137 struct port_id req_port_id; 138 uint8_t suffix[0]; 139 } __attribute__((packed)); 140 141 struct ptp_message { 142 union { 143 struct ptp_header header; 144 struct sync_msg sync; 145 struct delay_req_msg delay_req; 146 struct follow_up_msg follow_up; 147 struct delay_resp_msg delay_resp; 148 } __attribute__((packed)); 149 }; 150 151 struct ptpv2_data_slave_ordinary { 152 struct rte_mbuf *m; 153 struct timespec tstamp1; 154 struct timespec tstamp2; 155 struct timespec tstamp3; 156 struct timespec tstamp4; 157 struct clock_id client_clock_id; 158 struct clock_id master_clock_id; 159 struct timeval new_adj; 160 int64_t delta; 161 uint16_t portid; 162 uint16_t seqID_SYNC; 163 uint16_t seqID_FOLLOWUP; 164 uint8_t ptpset; 165 uint8_t kernel_time_set; 166 uint16_t current_ptp_port; 167 }; 168 169 static struct ptpv2_data_slave_ordinary ptp_data; 170 171 static inline uint64_t timespec64_to_ns(const struct timespec *ts) 172 { 173 return ((uint64_t) ts->tv_sec * NSEC_PER_SEC) + ts->tv_nsec; 174 } 175 176 static struct timeval 177 ns_to_timeval(int64_t nsec) 178 { 179 struct timespec t_spec = {0, 0}; 180 struct timeval t_eval = {0, 0}; 181 int32_t rem; 182 183 if (nsec == 0) 184 return t_eval; 185 rem = nsec % NSEC_PER_SEC; 186 t_spec.tv_sec = nsec / NSEC_PER_SEC; 187 188 if (rem < 0) { 189 t_spec.tv_sec--; 190 rem += NSEC_PER_SEC; 191 } 192 193 t_spec.tv_nsec = rem; 194 t_eval.tv_sec = t_spec.tv_sec; 195 t_eval.tv_usec = t_spec.tv_nsec / 1000; 196 197 return t_eval; 198 } 199 200 /* 201 * Initializes a given port using global settings and with the RX buffers 202 * coming from the mbuf_pool passed as a parameter. 203 */ 204 static inline int 205 port_init(uint8_t port, struct rte_mempool *mbuf_pool) 206 { 207 struct rte_eth_dev_info dev_info; 208 struct rte_eth_conf port_conf = port_conf_default; 209 const uint16_t rx_rings = 1; 210 const uint16_t tx_rings = 1; 211 int retval; 212 uint16_t q; 213 uint16_t nb_rxd = RX_RING_SIZE; 214 uint16_t nb_txd = TX_RING_SIZE; 215 216 if (port >= rte_eth_dev_count()) 217 return -1; 218 219 /* Configure the Ethernet device. */ 220 retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf); 221 if (retval != 0) 222 return retval; 223 224 retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd); 225 if (retval != 0) 226 return retval; 227 228 /* Allocate and set up 1 RX queue per Ethernet port. */ 229 for (q = 0; q < rx_rings; q++) { 230 retval = rte_eth_rx_queue_setup(port, q, nb_rxd, 231 rte_eth_dev_socket_id(port), NULL, mbuf_pool); 232 233 if (retval < 0) 234 return retval; 235 } 236 237 /* Allocate and set up 1 TX queue per Ethernet port. */ 238 for (q = 0; q < tx_rings; q++) { 239 /* Setup txq_flags */ 240 struct rte_eth_txconf *txconf; 241 242 rte_eth_dev_info_get(q, &dev_info); 243 txconf = &dev_info.default_txconf; 244 txconf->txq_flags = 0; 245 246 retval = rte_eth_tx_queue_setup(port, q, nb_txd, 247 rte_eth_dev_socket_id(port), txconf); 248 if (retval < 0) 249 return retval; 250 } 251 252 /* Start the Ethernet port. */ 253 retval = rte_eth_dev_start(port); 254 if (retval < 0) 255 return retval; 256 257 /* Enable timesync timestamping for the Ethernet device */ 258 rte_eth_timesync_enable(port); 259 260 /* Enable RX in promiscuous mode for the Ethernet device. */ 261 rte_eth_promiscuous_enable(port); 262 263 return 0; 264 } 265 266 static void 267 print_clock_info(struct ptpv2_data_slave_ordinary *ptp_data) 268 { 269 int64_t nsec; 270 struct timespec net_time, sys_time; 271 272 printf("Master Clock id: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x", 273 ptp_data->master_clock_id.id[0], 274 ptp_data->master_clock_id.id[1], 275 ptp_data->master_clock_id.id[2], 276 ptp_data->master_clock_id.id[3], 277 ptp_data->master_clock_id.id[4], 278 ptp_data->master_clock_id.id[5], 279 ptp_data->master_clock_id.id[6], 280 ptp_data->master_clock_id.id[7]); 281 282 printf("\nT2 - Slave Clock. %lds %ldns", 283 (ptp_data->tstamp2.tv_sec), 284 (ptp_data->tstamp2.tv_nsec)); 285 286 printf("\nT1 - Master Clock. %lds %ldns ", 287 ptp_data->tstamp1.tv_sec, 288 (ptp_data->tstamp1.tv_nsec)); 289 290 printf("\nT3 - Slave Clock. %lds %ldns", 291 ptp_data->tstamp3.tv_sec, 292 (ptp_data->tstamp3.tv_nsec)); 293 294 printf("\nT4 - Master Clock. %lds %ldns ", 295 ptp_data->tstamp4.tv_sec, 296 (ptp_data->tstamp4.tv_nsec)); 297 298 printf("\nDelta between master and slave clocks:%"PRId64"ns\n", 299 ptp_data->delta); 300 301 clock_gettime(CLOCK_REALTIME, &sys_time); 302 rte_eth_timesync_read_time(ptp_data->current_ptp_port, &net_time); 303 304 time_t ts = net_time.tv_sec; 305 306 printf("\n\nComparison between Linux kernel Time and PTP:"); 307 308 printf("\nCurrent PTP Time: %.24s %.9ld ns", 309 ctime(&ts), net_time.tv_nsec); 310 311 nsec = (int64_t)timespec64_to_ns(&net_time) - 312 (int64_t)timespec64_to_ns(&sys_time); 313 ptp_data->new_adj = ns_to_timeval(nsec); 314 315 gettimeofday(&ptp_data->new_adj, NULL); 316 317 time_t tp = ptp_data->new_adj.tv_sec; 318 319 printf("\nCurrent SYS Time: %.24s %.6ld ns", 320 ctime(&tp), ptp_data->new_adj.tv_usec); 321 322 printf("\nDelta between PTP and Linux Kernel time:%"PRId64"ns\n", 323 nsec); 324 325 printf("[Ctrl+C to quit]\n"); 326 327 /* Clear screen and put cursor in column 1, row 1 */ 328 printf("\033[2J\033[1;1H"); 329 } 330 331 static int64_t 332 delta_eval(struct ptpv2_data_slave_ordinary *ptp_data) 333 { 334 int64_t delta; 335 uint64_t t1 = 0; 336 uint64_t t2 = 0; 337 uint64_t t3 = 0; 338 uint64_t t4 = 0; 339 340 t1 = timespec64_to_ns(&ptp_data->tstamp1); 341 t2 = timespec64_to_ns(&ptp_data->tstamp2); 342 t3 = timespec64_to_ns(&ptp_data->tstamp3); 343 t4 = timespec64_to_ns(&ptp_data->tstamp4); 344 345 delta = -((int64_t)((t2 - t1) - (t4 - t3))) / 2; 346 347 return delta; 348 } 349 350 /* 351 * Parse the PTP SYNC message. 352 */ 353 static void 354 parse_sync(struct ptpv2_data_slave_ordinary *ptp_data, uint16_t rx_tstamp_idx) 355 { 356 struct ptp_header *ptp_hdr; 357 358 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(ptp_data->m, char *) 359 + sizeof(struct ether_hdr)); 360 ptp_data->seqID_SYNC = rte_be_to_cpu_16(ptp_hdr->seq_id); 361 362 if (ptp_data->ptpset == 0) { 363 rte_memcpy(&ptp_data->master_clock_id, 364 &ptp_hdr->source_port_id.clock_id, 365 sizeof(struct clock_id)); 366 ptp_data->ptpset = 1; 367 } 368 369 if (memcmp(&ptp_hdr->source_port_id.clock_id, 370 &ptp_hdr->source_port_id.clock_id, 371 sizeof(struct clock_id)) == 0) { 372 373 if (ptp_data->ptpset == 1) 374 rte_eth_timesync_read_rx_timestamp(ptp_data->portid, 375 &ptp_data->tstamp2, rx_tstamp_idx); 376 } 377 378 } 379 380 /* 381 * Parse the PTP FOLLOWUP message and send DELAY_REQ to the master clock. 382 */ 383 static void 384 parse_fup(struct ptpv2_data_slave_ordinary *ptp_data) 385 { 386 struct ether_hdr *eth_hdr; 387 struct ptp_header *ptp_hdr; 388 struct clock_id *client_clkid; 389 struct ptp_message *ptp_msg; 390 struct rte_mbuf *created_pkt; 391 struct tstamp *origin_tstamp; 392 struct ether_addr eth_multicast = ether_multicast; 393 size_t pkt_size; 394 int wait_us; 395 struct rte_mbuf *m = ptp_data->m; 396 397 eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *); 398 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 399 + sizeof(struct 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 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) { 416 417 created_pkt = rte_pktmbuf_alloc(mbuf_pool); 418 pkt_size = sizeof(struct ether_hdr) + 419 sizeof(struct ptp_message); 420 created_pkt->data_len = pkt_size; 421 created_pkt->pkt_len = pkt_size; 422 eth_hdr = rte_pktmbuf_mtod(created_pkt, struct ether_hdr *); 423 rte_eth_macaddr_get(ptp_data->portid, ð_hdr->s_addr); 424 425 /* Set multicast address 01-1B-19-00-00-00. */ 426 ether_addr_copy(ð_multicast, ð_hdr->d_addr); 427 428 eth_hdr->ether_type = htons(PTP_PROTOCOL); 429 ptp_msg = (struct ptp_message *) 430 (rte_pktmbuf_mtod(created_pkt, char *) + 431 sizeof(struct ether_hdr)); 432 433 ptp_msg->delay_req.hdr.seq_id = htons(ptp_data->seqID_SYNC); 434 ptp_msg->delay_req.hdr.msg_type = DELAY_REQ; 435 ptp_msg->delay_req.hdr.ver = 2; 436 ptp_msg->delay_req.hdr.control = 1; 437 ptp_msg->delay_req.hdr.log_message_interval = 127; 438 439 /* Set up clock id. */ 440 client_clkid = 441 &ptp_msg->delay_req.hdr.source_port_id.clock_id; 442 443 client_clkid->id[0] = eth_hdr->s_addr.addr_bytes[0]; 444 client_clkid->id[1] = eth_hdr->s_addr.addr_bytes[1]; 445 client_clkid->id[2] = eth_hdr->s_addr.addr_bytes[2]; 446 client_clkid->id[3] = 0xFF; 447 client_clkid->id[4] = 0xFE; 448 client_clkid->id[5] = eth_hdr->s_addr.addr_bytes[3]; 449 client_clkid->id[6] = eth_hdr->s_addr.addr_bytes[4]; 450 client_clkid->id[7] = eth_hdr->s_addr.addr_bytes[5]; 451 452 rte_memcpy(&ptp_data->client_clock_id, 453 client_clkid, 454 sizeof(struct clock_id)); 455 456 /* Enable flag for hardware timestamping. */ 457 created_pkt->ol_flags |= PKT_TX_IEEE1588_TMST; 458 459 /*Read value from NIC to prevent latching with old value. */ 460 rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 461 &ptp_data->tstamp3); 462 463 /* Transmit the packet. */ 464 rte_eth_tx_burst(ptp_data->portid, 0, &created_pkt, 1); 465 466 wait_us = 0; 467 ptp_data->tstamp3.tv_nsec = 0; 468 ptp_data->tstamp3.tv_sec = 0; 469 470 /* Wait at least 1 us to read TX timestamp. */ 471 while ((rte_eth_timesync_read_tx_timestamp(ptp_data->portid, 472 &ptp_data->tstamp3) < 0) && (wait_us < 1000)) { 473 rte_delay_us(1); 474 wait_us++; 475 } 476 } 477 } 478 479 /* 480 * Update the kernel time with the difference between it and the current NIC 481 * time. 482 */ 483 static inline void 484 update_kernel_time(void) 485 { 486 int64_t nsec; 487 struct timespec net_time, sys_time; 488 489 clock_gettime(CLOCK_REALTIME, &sys_time); 490 rte_eth_timesync_read_time(ptp_data.current_ptp_port, &net_time); 491 492 nsec = (int64_t)timespec64_to_ns(&net_time) - 493 (int64_t)timespec64_to_ns(&sys_time); 494 495 ptp_data.new_adj = ns_to_timeval(nsec); 496 497 /* 498 * If difference between kernel time and system time in NIC is too big 499 * (more than +/- 20 microseconds), use clock_settime to set directly 500 * the kernel time, as adjtime is better for small adjustments (takes 501 * longer to adjust the time). 502 */ 503 504 if (nsec > KERNEL_TIME_ADJUST_LIMIT || nsec < -KERNEL_TIME_ADJUST_LIMIT) 505 clock_settime(CLOCK_REALTIME, &net_time); 506 else 507 adjtime(&ptp_data.new_adj, 0); 508 509 510 } 511 512 /* 513 * Parse the DELAY_RESP message. 514 */ 515 static void 516 parse_drsp(struct ptpv2_data_slave_ordinary *ptp_data) 517 { 518 struct rte_mbuf *m = ptp_data->m; 519 struct ptp_message *ptp_msg; 520 struct tstamp *rx_tstamp; 521 uint16_t seq_id; 522 523 ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) + 524 sizeof(struct ether_hdr)); 525 seq_id = rte_be_to_cpu_16(ptp_msg->delay_resp.hdr.seq_id); 526 if (memcmp(&ptp_data->client_clock_id, 527 &ptp_msg->delay_resp.req_port_id.clock_id, 528 sizeof(struct clock_id)) == 0) { 529 if (seq_id == ptp_data->seqID_FOLLOWUP) { 530 rx_tstamp = &ptp_msg->delay_resp.rx_tstamp; 531 ptp_data->tstamp4.tv_nsec = ntohl(rx_tstamp->ns); 532 ptp_data->tstamp4.tv_sec = 533 ((uint64_t)ntohl(rx_tstamp->sec_lsb)) | 534 (((uint64_t)ntohs(rx_tstamp->sec_msb)) << 32); 535 536 /* Evaluate the delta for adjustment. */ 537 ptp_data->delta = delta_eval(ptp_data); 538 539 rte_eth_timesync_adjust_time(ptp_data->portid, 540 ptp_data->delta); 541 542 ptp_data->current_ptp_port = ptp_data->portid; 543 544 /* Update kernel time if enabled in app parameters. */ 545 if (ptp_data->kernel_time_set == 1) 546 update_kernel_time(); 547 548 549 550 } 551 } 552 } 553 554 /* This function processes PTP packets, implementing slave PTP IEEE1588 L2 555 * functionality. 556 */ 557 static void 558 parse_ptp_frames(uint8_t portid, struct rte_mbuf *m) { 559 struct ptp_header *ptp_hdr; 560 struct ether_hdr *eth_hdr; 561 uint16_t eth_type; 562 563 eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *); 564 eth_type = rte_be_to_cpu_16(eth_hdr->ether_type); 565 566 if (eth_type == PTP_PROTOCOL) { 567 ptp_data.m = m; 568 ptp_data.portid = portid; 569 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *) 570 + sizeof(struct ether_hdr)); 571 572 switch (ptp_hdr->msg_type) { 573 case SYNC: 574 parse_sync(&ptp_data, m->timesync); 575 break; 576 case FOLLOW_UP: 577 parse_fup(&ptp_data); 578 break; 579 case DELAY_RESP: 580 parse_drsp(&ptp_data); 581 print_clock_info(&ptp_data); 582 break; 583 default: 584 break; 585 } 586 } 587 } 588 589 /* 590 * The lcore main. This is the main thread that does the work, reading from an 591 * input port and writing to an output port. 592 */ 593 static __attribute__((noreturn)) void 594 lcore_main(void) 595 { 596 uint8_t portid; 597 unsigned nb_rx; 598 struct rte_mbuf *m; 599 600 /* 601 * Check that the port is on the same NUMA node as the polling thread 602 * for best performance. 603 */ 604 printf("\nCore %u Waiting for SYNC packets. [Ctrl+C to quit]\n", 605 rte_lcore_id()); 606 607 /* Run until the application is quit or killed. */ 608 609 while (1) { 610 /* Read packet from RX queues. */ 611 for (portid = 0; portid < ptp_enabled_port_nb; portid++) { 612 613 portid = ptp_enabled_ports[portid]; 614 nb_rx = rte_eth_rx_burst(portid, 0, &m, 1); 615 616 if (likely(nb_rx == 0)) 617 continue; 618 619 if (m->ol_flags & PKT_RX_IEEE1588_PTP) 620 parse_ptp_frames(portid, m); 621 622 rte_pktmbuf_free(m); 623 } 624 } 625 } 626 627 static void 628 print_usage(const char *prgname) 629 { 630 printf("%s [EAL options] -- -p PORTMASK -T VALUE\n" 631 " -T VALUE: 0 - Disable, 1 - Enable Linux Clock" 632 " Synchronization (0 default)\n" 633 " -p PORTMASK: hexadecimal bitmask of ports to configure\n", 634 prgname); 635 } 636 637 static int 638 ptp_parse_portmask(const char *portmask) 639 { 640 char *end = NULL; 641 unsigned long pm; 642 643 /* Parse the hexadecimal string. */ 644 pm = strtoul(portmask, &end, 16); 645 646 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 647 return -1; 648 649 if (pm == 0) 650 return -1; 651 652 return pm; 653 } 654 655 static int 656 parse_ptp_kernel(const char *param) 657 { 658 char *end = NULL; 659 unsigned long pm; 660 661 /* Parse the hexadecimal string. */ 662 pm = strtoul(param, &end, 16); 663 664 if ((param[0] == '\0') || (end == NULL) || (*end != '\0')) 665 return -1; 666 if (pm == 0) 667 return 0; 668 669 return 1; 670 } 671 672 /* Parse the commandline arguments. */ 673 static int 674 ptp_parse_args(int argc, char **argv) 675 { 676 int opt, ret; 677 char **argvopt; 678 int option_index; 679 char *prgname = argv[0]; 680 static struct option lgopts[] = { {NULL, 0, 0, 0} }; 681 682 argvopt = argv; 683 684 while ((opt = getopt_long(argc, argvopt, "p:T:", 685 lgopts, &option_index)) != EOF) { 686 687 switch (opt) { 688 689 /* Portmask. */ 690 case 'p': 691 ptp_enabled_port_mask = ptp_parse_portmask(optarg); 692 if (ptp_enabled_port_mask == 0) { 693 printf("invalid portmask\n"); 694 print_usage(prgname); 695 return -1; 696 } 697 break; 698 /* Time synchronization. */ 699 case 'T': 700 ret = parse_ptp_kernel(optarg); 701 if (ret < 0) { 702 print_usage(prgname); 703 return -1; 704 } 705 706 ptp_data.kernel_time_set = ret; 707 break; 708 709 default: 710 print_usage(prgname); 711 return -1; 712 } 713 } 714 715 argv[optind-1] = prgname; 716 717 optind = 1; /* Reset getopt lib. */ 718 719 return 0; 720 } 721 722 /* 723 * The main function, which does initialization and calls the per-lcore 724 * functions. 725 */ 726 int 727 main(int argc, char *argv[]) 728 { 729 unsigned nb_ports; 730 731 uint8_t portid; 732 733 /* Initialize the Environment Abstraction Layer (EAL). */ 734 int ret = rte_eal_init(argc, argv); 735 736 if (ret < 0) 737 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n"); 738 739 memset(&ptp_data, '\0', sizeof(struct ptpv2_data_slave_ordinary)); 740 741 argc -= ret; 742 argv += ret; 743 744 ret = ptp_parse_args(argc, argv); 745 if (ret < 0) 746 rte_exit(EXIT_FAILURE, "Error with PTP initialization\n"); 747 748 /* Check that there is an even number of ports to send/receive on. */ 749 nb_ports = rte_eth_dev_count(); 750 751 /* Creates a new mempool in memory to hold the mbufs. */ 752 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports, 753 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id()); 754 755 if (mbuf_pool == NULL) 756 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n"); 757 758 /* Initialize all ports. */ 759 for (portid = 0; portid < nb_ports; portid++) { 760 if ((ptp_enabled_port_mask & (1 << portid)) != 0) { 761 if (port_init(portid, mbuf_pool) == 0) { 762 ptp_enabled_ports[ptp_enabled_port_nb] = portid; 763 ptp_enabled_port_nb++; 764 } else { 765 rte_exit(EXIT_FAILURE, 766 "Cannot init port %"PRIu8 "\n", 767 portid); 768 } 769 } else 770 printf("Skipping disabled port %u\n", portid); 771 } 772 773 if (ptp_enabled_port_nb == 0) { 774 rte_exit(EXIT_FAILURE, 775 "All available ports are disabled." 776 " Please set portmask.\n"); 777 } 778 779 if (rte_lcore_count() > 1) 780 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n"); 781 782 /* Call lcore_main on the master core only. */ 783 lcore_main(); 784 785 return 0; 786 } 787