ceph/src/dpdk/examples/ptpclient/ptpclient.c

   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         uint8_t portid;
 162         uint16_t seqID_SYNC;
 163         uint16_t seqID_FOLLOWUP;
 164         uint8_t ptpset;
 165         uint8_t kernel_time_set;
 166         uint8_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
 214         if (port >= rte_eth_dev_count())
 215                 return -1;
 216
 217         /* Configure the Ethernet device. */
 218         retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
 219         if (retval != 0)
 220                 return retval;
 221
 222         /* Allocate and set up 1 RX queue per Ethernet port. */
 223         for (q = 0; q < rx_rings; q++) {
 224                 retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE,
 225                                 rte_eth_dev_socket_id(port), NULL, mbuf_pool);
 226
 227                 if (retval < 0)
 228                         return retval;
 229         }
 230
 231         /* Allocate and set up 1 TX queue per Ethernet port. */
 232         for (q = 0; q < tx_rings; q++) {
 233                 /* Setup txq_flags */
 234                 struct rte_eth_txconf *txconf;
 235
 236                 rte_eth_dev_info_get(q, &dev_info);
 237                 txconf = &dev_info.default_txconf;
 238                 txconf->txq_flags = 0;
 239
 240                 retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE,
 241                                 rte_eth_dev_socket_id(port), txconf);
 242                 if (retval < 0)
 243                         return retval;
 244         }
 245
 246         /* Start the Ethernet port. */
 247         retval = rte_eth_dev_start(port);
 248         if (retval < 0)
 249                 return retval;
 250
 251         /* Enable timesync timestamping for the Ethernet device */
 252         rte_eth_timesync_enable(port);
 253
 254         /* Enable RX in promiscuous mode for the Ethernet device. */
 255         rte_eth_promiscuous_enable(port);
 256
 257         return 0;
 258 }
 259
 260 static void
 261 print_clock_info(struct ptpv2_data_slave_ordinary *ptp_data)
 262 {
 263         int64_t nsec;
 264         struct timespec net_time, sys_time;
 265
 266         printf("Master Clock id: %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
 267                 ptp_data->master_clock_id.id[0],
 268                 ptp_data->master_clock_id.id[1],
 269                 ptp_data->master_clock_id.id[2],
 270                 ptp_data->master_clock_id.id[3],
 271                 ptp_data->master_clock_id.id[4],
 272                 ptp_data->master_clock_id.id[5],
 273                 ptp_data->master_clock_id.id[6],
 274                 ptp_data->master_clock_id.id[7]);
 275
 276         printf("\nT2 - Slave  Clock.  %lds %ldns",
 277                         (ptp_data->tstamp2.tv_sec),
 278                         (ptp_data->tstamp2.tv_nsec));
 279
 280         printf("\nT1 - Master Clock.  %lds %ldns ",
 281                         ptp_data->tstamp1.tv_sec,
 282                         (ptp_data->tstamp1.tv_nsec));
 283
 284         printf("\nT3 - Slave  Clock.  %lds %ldns",
 285                         ptp_data->tstamp3.tv_sec,
 286                         (ptp_data->tstamp3.tv_nsec));
 287
 288         printf("\nT4 - Master Clock.  %lds %ldns ",
 289                         ptp_data->tstamp4.tv_sec,
 290                         (ptp_data->tstamp4.tv_nsec));
 291
 292         printf("\nDelta between master and slave clocks:%"PRId64"ns\n",
 293                         ptp_data->delta);
 294
 295         clock_gettime(CLOCK_REALTIME, &sys_time);
 296         rte_eth_timesync_read_time(ptp_data->current_ptp_port, &net_time);
 297
 298         time_t ts = net_time.tv_sec;
 299
 300         printf("\n\nComparison between Linux kernel Time and PTP:");
 301
 302         printf("\nCurrent PTP Time: %.24s %.9ld ns",
 303                         ctime(&ts), net_time.tv_nsec);
 304
 305         nsec = (int64_t)timespec64_to_ns(&net_time) -
 306                         (int64_t)timespec64_to_ns(&sys_time);
 307         ptp_data->new_adj = ns_to_timeval(nsec);
 308
 309         gettimeofday(&ptp_data->new_adj, NULL);
 310
 311         time_t tp = ptp_data->new_adj.tv_sec;
 312
 313         printf("\nCurrent SYS Time: %.24s %.6ld ns",
 314                                 ctime(&tp), ptp_data->new_adj.tv_usec);
 315
 316         printf("\nDelta between PTP and Linux Kernel time:%"PRId64"ns\n",
 317                                 nsec);
 318
 319         printf("[Ctrl+C to quit]\n");
 320
 321         /* Clear screen and put cursor in column 1, row 1 */
 322         printf("\033[2J\033[1;1H");
 323 }
 324
 325 static int64_t
 326 delta_eval(struct ptpv2_data_slave_ordinary *ptp_data)
 327 {
 328         int64_t delta;
 329         uint64_t t1 = 0;
 330         uint64_t t2 = 0;
 331         uint64_t t3 = 0;
 332         uint64_t t4 = 0;
 333
 334         t1 = timespec64_to_ns(&ptp_data->tstamp1);
 335         t2 = timespec64_to_ns(&ptp_data->tstamp2);
 336         t3 = timespec64_to_ns(&ptp_data->tstamp3);
 337         t4 = timespec64_to_ns(&ptp_data->tstamp4);
 338
 339         delta = -((int64_t)((t2 - t1) - (t4 - t3))) / 2;
 340
 341         return delta;
 342 }
 343
 344 /*
 345  * Parse the PTP SYNC message.
 346  */
 347 static void
 348 parse_sync(struct ptpv2_data_slave_ordinary *ptp_data, uint16_t rx_tstamp_idx)
 349 {
 350         struct ptp_header *ptp_hdr;
 351
 352         ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(ptp_data->m, char *)
 353                         + sizeof(struct ether_hdr));
 354         ptp_data->seqID_SYNC = rte_be_to_cpu_16(ptp_hdr->seq_id);
 355
 356         if (ptp_data->ptpset == 0) {
 357                 rte_memcpy(&ptp_data->master_clock_id,
 358                                 &ptp_hdr->source_port_id.clock_id,
 359                                 sizeof(struct clock_id));
 360                 ptp_data->ptpset = 1;
 361         }
 362
 363         if (memcmp(&ptp_hdr->source_port_id.clock_id,
 364                         &ptp_hdr->source_port_id.clock_id,
 365                         sizeof(struct clock_id)) == 0) {
 366
 367                 if (ptp_data->ptpset == 1)
 368                         rte_eth_timesync_read_rx_timestamp(ptp_data->portid,
 369                                         &ptp_data->tstamp2, rx_tstamp_idx);
 370         }
 371
 372 }
 373
 374 /*
 375  * Parse the PTP FOLLOWUP message and send DELAY_REQ to the master clock.
 376  */
 377 static void
 378 parse_fup(struct ptpv2_data_slave_ordinary *ptp_data)
 379 {
 380         struct ether_hdr *eth_hdr;
 381         struct ptp_header *ptp_hdr;
 382         struct clock_id *client_clkid;
 383         struct ptp_message *ptp_msg;
 384         struct rte_mbuf *created_pkt;
 385         struct tstamp *origin_tstamp;
 386         struct ether_addr eth_multicast = ether_multicast;
 387         size_t pkt_size;
 388         int wait_us;
 389         struct rte_mbuf *m = ptp_data->m;
 390
 391         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 392         ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *)
 393                         + sizeof(struct ether_hdr));
 394         if (memcmp(&ptp_data->master_clock_id,
 395                         &ptp_hdr->source_port_id.clock_id,
 396                         sizeof(struct clock_id)) != 0)
 397                 return;
 398
 399         ptp_data->seqID_FOLLOWUP = rte_be_to_cpu_16(ptp_hdr->seq_id);
 400         ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) +
 401                                           sizeof(struct ether_hdr));
 402
 403         origin_tstamp = &ptp_msg->follow_up.precise_origin_tstamp;
 404         ptp_data->tstamp1.tv_nsec = ntohl(origin_tstamp->ns);
 405         ptp_data->tstamp1.tv_sec =
 406                 ((uint64_t)ntohl(origin_tstamp->sec_lsb)) |
 407                 (((uint64_t)ntohs(origin_tstamp->sec_msb)) << 32);
 408
 409         if (ptp_data->seqID_FOLLOWUP == ptp_data->seqID_SYNC) {
 410
 411                 created_pkt = rte_pktmbuf_alloc(mbuf_pool);
 412                 pkt_size = sizeof(struct ether_hdr) +
 413                         sizeof(struct ptp_message);
 414                 created_pkt->data_len = pkt_size;
 415                 created_pkt->pkt_len = pkt_size;
 416                 eth_hdr = rte_pktmbuf_mtod(created_pkt, struct ether_hdr *);
 417                 rte_eth_macaddr_get(ptp_data->portid, &eth_hdr->s_addr);
 418
 419                 /* Set multicast address 01-1B-19-00-00-00. */
 420                 ether_addr_copy(&eth_multicast, &eth_hdr->d_addr);
 421
 422                 eth_hdr->ether_type = htons(PTP_PROTOCOL);
 423                 ptp_msg = (struct ptp_message *)
 424                         (rte_pktmbuf_mtod(created_pkt, char *) +
 425                         sizeof(struct ether_hdr));
 426
 427                 ptp_msg->delay_req.hdr.seq_id = htons(ptp_data->seqID_SYNC);
 428                 ptp_msg->delay_req.hdr.msg_type = DELAY_REQ;
 429                 ptp_msg->delay_req.hdr.ver = 2;
 430                 ptp_msg->delay_req.hdr.control = 1;
 431                 ptp_msg->delay_req.hdr.log_message_interval = 127;
 432
 433                 /* Set up clock id. */
 434                 client_clkid =
 435                         &ptp_msg->delay_req.hdr.source_port_id.clock_id;
 436
 437                 client_clkid->id[0] = eth_hdr->s_addr.addr_bytes[0];
 438                 client_clkid->id[1] = eth_hdr->s_addr.addr_bytes[1];
 439                 client_clkid->id[2] = eth_hdr->s_addr.addr_bytes[2];
 440                 client_clkid->id[3] = 0xFF;
 441                 client_clkid->id[4] = 0xFE;
 442                 client_clkid->id[5] = eth_hdr->s_addr.addr_bytes[3];
 443                 client_clkid->id[6] = eth_hdr->s_addr.addr_bytes[4];
 444                 client_clkid->id[7] = eth_hdr->s_addr.addr_bytes[5];
 445
 446                 rte_memcpy(&ptp_data->client_clock_id,
 447                            client_clkid,
 448                            sizeof(struct clock_id));
 449
 450                 /* Enable flag for hardware timestamping. */
 451                 created_pkt->ol_flags |= PKT_TX_IEEE1588_TMST;
 452
 453                 /*Read value from NIC to prevent latching with old value. */
 454                 rte_eth_timesync_read_tx_timestamp(ptp_data->portid,
 455                                 &ptp_data->tstamp3);
 456
 457                 /* Transmit the packet. */
 458                 rte_eth_tx_burst(ptp_data->portid, 0, &created_pkt, 1);
 459
 460                 wait_us = 0;
 461                 ptp_data->tstamp3.tv_nsec = 0;
 462                 ptp_data->tstamp3.tv_sec = 0;
 463
 464                 /* Wait at least 1 us to read TX timestamp. */
 465                 while ((rte_eth_timesync_read_tx_timestamp(ptp_data->portid,
 466                                 &ptp_data->tstamp3) < 0) && (wait_us < 1000)) {
 467                         rte_delay_us(1);
 468                         wait_us++;
 469                 }
 470         }
 471 }
 472
 473 /*
 474  * Update the kernel time with the difference between it and the current NIC
 475  * time.
 476  */
 477 static inline void
 478 update_kernel_time(void)
 479 {
 480         int64_t nsec;
 481         struct timespec net_time, sys_time;
 482
 483         clock_gettime(CLOCK_REALTIME, &sys_time);
 484         rte_eth_timesync_read_time(ptp_data.current_ptp_port, &net_time);
 485
 486         nsec = (int64_t)timespec64_to_ns(&net_time) -
 487                (int64_t)timespec64_to_ns(&sys_time);
 488
 489         ptp_data.new_adj = ns_to_timeval(nsec);
 490
 491         /*
 492          * If difference between kernel time and system time in NIC is too big
 493          * (more than +/- 20 microseconds), use clock_settime to set directly
 494          * the kernel time, as adjtime is better for small adjustments (takes
 495          * longer to adjust the time).
 496          */
 497
 498         if (nsec > KERNEL_TIME_ADJUST_LIMIT || nsec < -KERNEL_TIME_ADJUST_LIMIT)
 499                 clock_settime(CLOCK_REALTIME, &net_time);
 500         else
 501                 adjtime(&ptp_data.new_adj, 0);
 502
 503
 504 }
 505
 506 /*
 507  * Parse the DELAY_RESP message.
 508  */
 509 static void
 510 parse_drsp(struct ptpv2_data_slave_ordinary *ptp_data)
 511 {
 512         struct rte_mbuf *m = ptp_data->m;
 513         struct ptp_message *ptp_msg;
 514         struct tstamp *rx_tstamp;
 515         uint16_t seq_id;
 516
 517         ptp_msg = (struct ptp_message *) (rte_pktmbuf_mtod(m, char *) +
 518                                         sizeof(struct ether_hdr));
 519         seq_id = rte_be_to_cpu_16(ptp_msg->delay_resp.hdr.seq_id);
 520         if (memcmp(&ptp_data->client_clock_id,
 521                    &ptp_msg->delay_resp.req_port_id.clock_id,
 522                    sizeof(struct clock_id)) == 0) {
 523                 if (seq_id == ptp_data->seqID_FOLLOWUP) {
 524                         rx_tstamp = &ptp_msg->delay_resp.rx_tstamp;
 525                         ptp_data->tstamp4.tv_nsec = ntohl(rx_tstamp->ns);
 526                         ptp_data->tstamp4.tv_sec =
 527                                 ((uint64_t)ntohl(rx_tstamp->sec_lsb)) |
 528                                 (((uint64_t)ntohs(rx_tstamp->sec_msb)) << 32);
 529
 530                         /* Evaluate the delta for adjustment. */
 531                         ptp_data->delta = delta_eval(ptp_data);
 532
 533                         rte_eth_timesync_adjust_time(ptp_data->portid,
 534                                                      ptp_data->delta);
 535
 536                         ptp_data->current_ptp_port = ptp_data->portid;
 537
 538                         /* Update kernel time if enabled in app parameters. */
 539                         if (ptp_data->kernel_time_set == 1)
 540                                 update_kernel_time();
 541
 542
 543
 544                 }
 545         }
 546 }
 547
 548 /* This function processes PTP packets, implementing slave PTP IEEE1588 L2
 549  * functionality.
 550  */
 551 static void
 552 parse_ptp_frames(uint8_t portid, struct rte_mbuf *m) {
 553         struct ptp_header *ptp_hdr;
 554         struct ether_hdr *eth_hdr;
 555         uint16_t eth_type;
 556
 557         eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
 558         eth_type = rte_be_to_cpu_16(eth_hdr->ether_type);
 559
 560         if (eth_type == PTP_PROTOCOL) {
 561                 ptp_data.m = m;
 562                 ptp_data.portid = portid;
 563                 ptp_hdr = (struct ptp_header *)(rte_pktmbuf_mtod(m, char *)
 564                                         + sizeof(struct ether_hdr));
 565
 566                 switch (ptp_hdr->msg_type) {
 567                 case SYNC:
 568                         parse_sync(&ptp_data, m->timesync);
 569                         break;
 570                 case FOLLOW_UP:
 571                         parse_fup(&ptp_data);
 572                         break;
 573                 case DELAY_RESP:
 574                         parse_drsp(&ptp_data);
 575                         print_clock_info(&ptp_data);
 576                         break;
 577                 default:
 578                         break;
 579                 }
 580         }
 581 }
 582
 583 /*
 584  * The lcore main. This is the main thread that does the work, reading from an
 585  * input port and writing to an output port.
 586  */
 587 static __attribute__((noreturn)) void
 588 lcore_main(void)
 589 {
 590         uint8_t portid;
 591         unsigned nb_rx;
 592         struct rte_mbuf *m;
 593
 594         /*
 595          * Check that the port is on the same NUMA node as the polling thread
 596          * for best performance.
 597          */
 598         printf("\nCore %u Waiting for SYNC packets. [Ctrl+C to quit]\n",
 599                         rte_lcore_id());
 600
 601         /* Run until the application is quit or killed. */
 602
 603         while (1) {
 604                 /* Read packet from RX queues. */
 605                 for (portid = 0; portid < ptp_enabled_port_nb; portid++) {
 606
 607                         portid = ptp_enabled_ports[portid];
 608                         nb_rx = rte_eth_rx_burst(portid, 0, &m, 1);
 609
 610                         if (likely(nb_rx == 0))
 611                                 continue;
 612
 613                         if (m->ol_flags & PKT_RX_IEEE1588_PTP)
 614                                 parse_ptp_frames(portid, m);
 615
 616                         rte_pktmbuf_free(m);
 617                 }
 618         }
 619 }
 620
 621 static void
 622 print_usage(const char *prgname)
 623 {
 624         printf("%s [EAL options] -- -p PORTMASK -T VALUE\n"
 625                 " -T VALUE: 0 - Disable, 1 - Enable Linux Clock"
 626                 " Synchronization (0 default)\n"
 627                 " -p PORTMASK: hexadecimal bitmask of ports to configure\n",
 628                 prgname);
 629 }
 630
 631 static int
 632 ptp_parse_portmask(const char *portmask)
 633 {
 634         char *end = NULL;
 635         unsigned long pm;
 636
 637         /* Parse the hexadecimal string. */
 638         pm = strtoul(portmask, &end, 16);
 639
 640         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 641                 return -1;
 642
 643         if (pm == 0)
 644                 return -1;
 645
 646         return pm;
 647 }
 648
 649 static int
 650 parse_ptp_kernel(const char *param)
 651 {
 652         char *end = NULL;
 653         unsigned long pm;
 654
 655         /* Parse the hexadecimal string. */
 656         pm = strtoul(param, &end, 16);
 657
 658         if ((param[0] == '\0') || (end == NULL) || (*end != '\0'))
 659                 return -1;
 660         if (pm == 0)
 661                 return 0;
 662
 663         return 1;
 664 }
 665
 666 /* Parse the commandline arguments. */
 667 static int
 668 ptp_parse_args(int argc, char **argv)
 669 {
 670         int opt, ret;
 671         char **argvopt;
 672         int option_index;
 673         char *prgname = argv[0];
 674         static struct option lgopts[] = { {NULL, 0, 0, 0} };
 675
 676         argvopt = argv;
 677
 678         while ((opt = getopt_long(argc, argvopt, "p:T:",
 679                                   lgopts, &option_index)) != EOF) {
 680
 681                 switch (opt) {
 682
 683                 /* Portmask. */
 684                 case 'p':
 685                         ptp_enabled_port_mask = ptp_parse_portmask(optarg);
 686                         if (ptp_enabled_port_mask == 0) {
 687                                 printf("invalid portmask\n");
 688                                 print_usage(prgname);
 689                                 return -1;
 690                         }
 691                         break;
 692                 /* Time synchronization. */
 693                 case 'T':
 694                         ret = parse_ptp_kernel(optarg);
 695                         if (ret < 0) {
 696                                 print_usage(prgname);
 697                                 return -1;
 698                         }
 699
 700                         ptp_data.kernel_time_set = ret;
 701                         break;
 702
 703                 default:
 704                         print_usage(prgname);
 705                         return -1;
 706                 }
 707         }
 708
 709         argv[optind-1] = prgname;
 710
 711         optind = 0; /* Reset getopt lib. */
 712
 713         return 0;
 714 }
 715
 716 /*
 717  * The main function, which does initialization and calls the per-lcore
 718  * functions.
 719  */
 720 int
 721 main(int argc, char *argv[])
 722 {
 723         unsigned nb_ports;
 724
 725         uint8_t portid;
 726
 727         /* Initialize the Environment Abstraction Layer (EAL). */
 728         int ret = rte_eal_init(argc, argv);
 729
 730         if (ret < 0)
 731                 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
 732
 733         memset(&ptp_data, '\0', sizeof(struct ptpv2_data_slave_ordinary));
 734
 735         argc -= ret;
 736         argv += ret;
 737
 738         ret = ptp_parse_args(argc, argv);
 739         if (ret < 0)
 740                 rte_exit(EXIT_FAILURE, "Error with PTP initialization\n");
 741
 742         /* Check that there is an even number of ports to send/receive on. */
 743         nb_ports = rte_eth_dev_count();
 744
 745         /* Creates a new mempool in memory to hold the mbufs. */
 746         mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL", NUM_MBUFS * nb_ports,
 747                 MBUF_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 748
 749         if (mbuf_pool == NULL)
 750                 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
 751
 752         /* Initialize all ports. */
 753         for (portid = 0; portid < nb_ports; portid++) {
 754                 if ((ptp_enabled_port_mask & (1 << portid)) != 0) {
 755                         if (port_init(portid, mbuf_pool) == 0) {
 756                                 ptp_enabled_ports[ptp_enabled_port_nb] = portid;
 757                                 ptp_enabled_port_nb++;
 758                         } else {
 759                                 rte_exit(EXIT_FAILURE,
 760                                          "Cannot init port %"PRIu8 "\n",
 761                                          portid);
 762                         }
 763                 } else
 764                         printf("Skipping disabled port %u\n", portid);
 765         }
 766
 767         if (ptp_enabled_port_nb == 0) {
 768                 rte_exit(EXIT_FAILURE,
 769                         "All available ports are disabled."
 770                         " Please set portmask.\n");
 771         }
 772
 773         if (rte_lcore_count() > 1)
 774                 printf("\nWARNING: Too many lcores enabled. Only 1 used.\n");
 775
 776         /* Call lcore_main on the master core only. */
 777         lcore_main();
 778
 779         return 0;
 780 }