1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright (c) 2015-2018 Atomic Rules LLC 3 */ 4 5 #include <unistd.h> 6 7 #include "rte_pmd_ark.h" 8 #include "ark_ethdev_rx.h" 9 #include "ark_global.h" 10 #include "ark_logs.h" 11 #include "ark_mpu.h" 12 #include "ark_udm.h" 13 14 #define ARK_RX_META_SIZE 32 15 #define ARK_RX_META_OFFSET (RTE_PKTMBUF_HEADROOM - ARK_RX_META_SIZE) 16 #define ARK_RX_MAX_NOCHAIN (RTE_MBUF_DEFAULT_DATAROOM) 17 18 /* Forward declarations */ 19 struct ark_rx_queue; 20 struct ark_rx_meta; 21 22 static void dump_mbuf_data(struct rte_mbuf *mbuf, uint16_t lo, uint16_t hi); 23 static void ark_ethdev_rx_dump(const char *name, struct ark_rx_queue *queue); 24 static uint32_t eth_ark_rx_jumbo(struct ark_rx_queue *queue, 25 struct ark_rx_meta *meta, 26 struct rte_mbuf *mbuf0, 27 uint32_t cons_index); 28 static inline int eth_ark_rx_seed_mbufs(struct ark_rx_queue *queue); 29 static int eth_ark_rx_seed_recovery(struct ark_rx_queue *queue, 30 uint32_t *pnb, 31 struct rte_mbuf **mbufs); 32 33 /* ************************************************************************* */ 34 struct ark_rx_queue { 35 /* array of mbufs to populate */ 36 struct rte_mbuf **reserve_q; 37 /* array of physical addresses of the mbuf data pointer */ 38 /* This point is a virtual address */ 39 rte_iova_t *paddress_q; 40 struct rte_mempool *mb_pool; 41 42 struct ark_udm_t *udm; 43 struct ark_mpu_t *mpu; 44 45 uint32_t queue_size; 46 uint32_t queue_mask; 47 48 uint32_t seed_index; /* step 1 set with empty mbuf */ 49 uint32_t cons_index; /* step 3 consumed by driver */ 50 51 /* The queue Id is used to identify the HW Q */ 52 uint16_t phys_qid; 53 54 /* The queue Index is used within the dpdk device structures */ 55 uint16_t queue_index; 56 57 uint32_t last_cons; 58 59 /* separate cache line */ 60 /* second cache line - fields only used in slow path */ 61 RTE_MARKER cacheline1 __rte_cache_min_aligned; 62 63 volatile uint32_t prod_index; /* step 2 filled by FPGA */ 64 } __rte_cache_aligned; 65 66 67 /* ************************************************************************* */ 68 static int 69 eth_ark_rx_hw_setup(struct rte_eth_dev *dev, 70 struct ark_rx_queue *queue, 71 uint16_t rx_queue_id __rte_unused, uint16_t rx_queue_idx) 72 { 73 rte_iova_t queue_base; 74 rte_iova_t phys_addr_q_base; 75 rte_iova_t phys_addr_prod_index; 76 77 queue_base = rte_malloc_virt2iova(queue); 78 phys_addr_prod_index = queue_base + 79 offsetof(struct ark_rx_queue, prod_index); 80 81 phys_addr_q_base = rte_malloc_virt2iova(queue->paddress_q); 82 83 /* Verify HW */ 84 if (ark_mpu_verify(queue->mpu, sizeof(rte_iova_t))) { 85 ARK_PMD_LOG(ERR, "Illegal configuration rx queue\n"); 86 return -1; 87 } 88 89 /* Stop and Reset and configure MPU */ 90 ark_mpu_configure(queue->mpu, phys_addr_q_base, queue->queue_size, 0); 91 92 ark_udm_write_addr(queue->udm, phys_addr_prod_index); 93 94 /* advance the valid pointer, but don't start until the queue starts */ 95 ark_mpu_reset_stats(queue->mpu); 96 97 /* The seed is the producer index for the HW */ 98 ark_mpu_set_producer(queue->mpu, queue->seed_index); 99 dev->data->rx_queue_state[rx_queue_idx] = RTE_ETH_QUEUE_STATE_STOPPED; 100 101 return 0; 102 } 103 104 static inline void 105 eth_ark_rx_update_cons_index(struct ark_rx_queue *queue, uint32_t cons_index) 106 { 107 queue->cons_index = cons_index; 108 eth_ark_rx_seed_mbufs(queue); 109 if (((cons_index - queue->last_cons) >= 64U)) { 110 queue->last_cons = cons_index; 111 ark_mpu_set_producer(queue->mpu, queue->seed_index); 112 } 113 } 114 115 /* ************************************************************************* */ 116 int 117 eth_ark_dev_rx_queue_setup(struct rte_eth_dev *dev, 118 uint16_t queue_idx, 119 uint16_t nb_desc, 120 unsigned int socket_id, 121 const struct rte_eth_rxconf *rx_conf, 122 struct rte_mempool *mb_pool) 123 { 124 static int warning1; /* = 0 */ 125 struct ark_adapter *ark = dev->data->dev_private; 126 127 struct ark_rx_queue *queue; 128 uint32_t i; 129 int status; 130 131 int qidx = queue_idx; 132 133 /* We may already be setup, free memory prior to re-allocation */ 134 if (dev->data->rx_queues[queue_idx] != NULL) { 135 eth_ark_dev_rx_queue_release(dev->data->rx_queues[queue_idx]); 136 dev->data->rx_queues[queue_idx] = NULL; 137 } 138 139 if (rx_conf != NULL && warning1 == 0) { 140 warning1 = 1; 141 ARK_PMD_LOG(NOTICE, 142 "Arkville ignores rte_eth_rxconf argument.\n"); 143 } 144 145 if (RTE_PKTMBUF_HEADROOM < ARK_RX_META_SIZE) { 146 ARK_PMD_LOG(ERR, 147 "Error: DPDK Arkville requires head room > %d bytes (%s)\n", 148 ARK_RX_META_SIZE, __func__); 149 return -1; /* ERROR CODE */ 150 } 151 152 if (!rte_is_power_of_2(nb_desc)) { 153 ARK_PMD_LOG(ERR, 154 "DPDK Arkville configuration queue size must be power of two %u (%s)\n", 155 nb_desc, __func__); 156 return -1; /* ERROR CODE */ 157 } 158 159 /* Allocate queue struct */ 160 queue = rte_zmalloc_socket("Ark_rxqueue", 161 sizeof(struct ark_rx_queue), 162 64, 163 socket_id); 164 if (queue == 0) { 165 ARK_PMD_LOG(ERR, "Failed to allocate memory in %s\n", __func__); 166 return -ENOMEM; 167 } 168 169 /* NOTE zmalloc is used, no need to 0 indexes, etc. */ 170 queue->mb_pool = mb_pool; 171 queue->phys_qid = qidx; 172 queue->queue_index = queue_idx; 173 queue->queue_size = nb_desc; 174 queue->queue_mask = nb_desc - 1; 175 176 queue->reserve_q = 177 rte_zmalloc_socket("Ark_rx_queue mbuf", 178 nb_desc * sizeof(struct rte_mbuf *), 179 64, 180 socket_id); 181 queue->paddress_q = 182 rte_zmalloc_socket("Ark_rx_queue paddr", 183 nb_desc * sizeof(rte_iova_t), 184 64, 185 socket_id); 186 187 if (queue->reserve_q == 0 || queue->paddress_q == 0) { 188 ARK_PMD_LOG(ERR, 189 "Failed to allocate queue memory in %s\n", 190 __func__); 191 rte_free(queue->reserve_q); 192 rte_free(queue->paddress_q); 193 rte_free(queue); 194 return -ENOMEM; 195 } 196 197 dev->data->rx_queues[queue_idx] = queue; 198 queue->udm = RTE_PTR_ADD(ark->udm.v, qidx * ARK_UDM_QOFFSET); 199 queue->mpu = RTE_PTR_ADD(ark->mpurx.v, qidx * ARK_MPU_QOFFSET); 200 201 /* populate mbuf reserve */ 202 status = eth_ark_rx_seed_mbufs(queue); 203 204 if (queue->seed_index != nb_desc) { 205 ARK_PMD_LOG(ERR, "Failed to allocate %u mbufs for RX queue %d\n", 206 nb_desc, qidx); 207 status = -1; 208 } 209 /* MPU Setup */ 210 if (status == 0) 211 status = eth_ark_rx_hw_setup(dev, queue, qidx, queue_idx); 212 213 if (unlikely(status != 0)) { 214 struct rte_mbuf **mbuf; 215 216 ARK_PMD_LOG(ERR, "Failed to initialize RX queue %d %s\n", 217 qidx, 218 __func__); 219 /* Free the mbufs allocated */ 220 for (i = 0, mbuf = queue->reserve_q; 221 i < queue->seed_index; ++i, mbuf++) { 222 rte_pktmbuf_free(*mbuf); 223 } 224 rte_free(queue->reserve_q); 225 rte_free(queue->paddress_q); 226 rte_free(queue); 227 return -1; /* ERROR CODE */ 228 } 229 230 return 0; 231 } 232 233 /* ************************************************************************* */ 234 uint16_t 235 eth_ark_recv_pkts_noop(void *rx_queue __rte_unused, 236 struct rte_mbuf **rx_pkts __rte_unused, 237 uint16_t nb_pkts __rte_unused) 238 { 239 return 0; 240 } 241 242 /* ************************************************************************* */ 243 uint16_t 244 eth_ark_recv_pkts(void *rx_queue, 245 struct rte_mbuf **rx_pkts, 246 uint16_t nb_pkts) 247 { 248 struct ark_rx_queue *queue; 249 register uint32_t cons_index, prod_index; 250 uint16_t nb; 251 struct rte_mbuf *mbuf; 252 struct ark_rx_meta *meta; 253 254 queue = (struct ark_rx_queue *)rx_queue; 255 if (unlikely(queue == 0)) 256 return 0; 257 if (unlikely(nb_pkts == 0)) 258 return 0; 259 prod_index = queue->prod_index; 260 cons_index = queue->cons_index; 261 nb = 0; 262 263 while (prod_index != cons_index) { 264 mbuf = queue->reserve_q[cons_index & queue->queue_mask]; 265 /* prefetch mbuf */ 266 rte_mbuf_prefetch_part1(mbuf); 267 rte_mbuf_prefetch_part2(mbuf); 268 269 /* META DATA embedded in headroom */ 270 meta = RTE_PTR_ADD(mbuf->buf_addr, ARK_RX_META_OFFSET); 271 272 mbuf->port = meta->port; 273 mbuf->pkt_len = meta->pkt_len; 274 mbuf->data_len = meta->pkt_len; 275 /* set timestamp if enabled at least on one device */ 276 if (ark_timestamp_rx_dynflag > 0) { 277 *RTE_MBUF_DYNFIELD(mbuf, ark_timestamp_dynfield_offset, 278 rte_mbuf_timestamp_t *) = meta->timestamp; 279 mbuf->ol_flags |= ark_timestamp_rx_dynflag; 280 } 281 rte_pmd_ark_mbuf_rx_userdata_set(mbuf, meta->user_data); 282 283 if (ARK_DEBUG_CORE) { /* debug sanity checks */ 284 if ((meta->pkt_len > (1024 * 16)) || 285 (meta->pkt_len == 0)) { 286 ARK_PMD_LOG(DEBUG, "RX: Bad Meta Q: %u" 287 " cons: %" PRIU32 288 " prod: %" PRIU32 289 " seed_index %" PRIU32 290 "\n", 291 queue->phys_qid, 292 cons_index, 293 queue->prod_index, 294 queue->seed_index); 295 296 297 ARK_PMD_LOG(DEBUG, " : UDM" 298 " prod: %" PRIU32 299 " len: %u\n", 300 queue->udm->rt_cfg.prod_idx, 301 meta->pkt_len); 302 ark_mpu_dump(queue->mpu, 303 " ", 304 queue->phys_qid); 305 dump_mbuf_data(mbuf, 0, 256); 306 /* its FUBAR so fix it */ 307 mbuf->pkt_len = 63; 308 meta->pkt_len = 63; 309 } 310 } 311 312 if (unlikely(meta->pkt_len > ARK_RX_MAX_NOCHAIN)) 313 cons_index = eth_ark_rx_jumbo 314 (queue, meta, mbuf, cons_index + 1); 315 else 316 cons_index += 1; 317 318 rx_pkts[nb] = mbuf; 319 nb++; 320 if (nb >= nb_pkts) 321 break; 322 } 323 324 if (unlikely(nb != 0)) 325 /* report next free to FPGA */ 326 eth_ark_rx_update_cons_index(queue, cons_index); 327 328 return nb; 329 } 330 331 /* ************************************************************************* */ 332 static uint32_t 333 eth_ark_rx_jumbo(struct ark_rx_queue *queue, 334 struct ark_rx_meta *meta, 335 struct rte_mbuf *mbuf0, 336 uint32_t cons_index) 337 { 338 struct rte_mbuf *mbuf_prev; 339 struct rte_mbuf *mbuf; 340 341 uint16_t remaining; 342 uint16_t data_len; 343 uint16_t segments; 344 345 /* first buf populated by called */ 346 mbuf_prev = mbuf0; 347 segments = 1; 348 data_len = RTE_MIN(meta->pkt_len, RTE_MBUF_DEFAULT_DATAROOM); 349 remaining = meta->pkt_len - data_len; 350 mbuf0->data_len = data_len; 351 352 /* HW guarantees that the data does not exceed prod_index! */ 353 while (remaining != 0) { 354 data_len = RTE_MIN(remaining, 355 RTE_MBUF_DEFAULT_DATAROOM + 356 RTE_PKTMBUF_HEADROOM); 357 358 remaining -= data_len; 359 segments += 1; 360 361 mbuf = queue->reserve_q[cons_index & queue->queue_mask]; 362 mbuf_prev->next = mbuf; 363 mbuf_prev = mbuf; 364 mbuf->data_len = data_len; 365 mbuf->data_off = 0; 366 367 cons_index += 1; 368 } 369 370 mbuf0->nb_segs = segments; 371 return cons_index; 372 } 373 374 /* Drain the internal queue allowing hw to clear out. */ 375 static void 376 eth_ark_rx_queue_drain(struct ark_rx_queue *queue) 377 { 378 register uint32_t cons_index; 379 struct rte_mbuf *mbuf; 380 381 cons_index = queue->cons_index; 382 383 /* NOT performance optimized, since this is a one-shot call */ 384 while ((cons_index ^ queue->prod_index) & queue->queue_mask) { 385 mbuf = queue->reserve_q[cons_index & queue->queue_mask]; 386 rte_pktmbuf_free(mbuf); 387 cons_index++; 388 eth_ark_rx_update_cons_index(queue, cons_index); 389 } 390 } 391 392 uint32_t 393 eth_ark_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_id) 394 { 395 struct ark_rx_queue *queue; 396 397 queue = dev->data->rx_queues[queue_id]; 398 return (queue->prod_index - queue->cons_index); /* mod arith */ 399 } 400 401 /* ************************************************************************* */ 402 int 403 eth_ark_rx_start_queue(struct rte_eth_dev *dev, uint16_t queue_id) 404 { 405 struct ark_rx_queue *queue; 406 407 queue = dev->data->rx_queues[queue_id]; 408 if (queue == 0) 409 return -1; 410 411 dev->data->rx_queue_state[queue_id] = RTE_ETH_QUEUE_STATE_STARTED; 412 413 ark_mpu_set_producer(queue->mpu, queue->seed_index); 414 ark_mpu_start(queue->mpu); 415 416 ark_udm_queue_enable(queue->udm, 1); 417 418 return 0; 419 } 420 421 /* ************************************************************************* */ 422 423 /* Queue can be restarted. data remains 424 */ 425 int 426 eth_ark_rx_stop_queue(struct rte_eth_dev *dev, uint16_t queue_id) 427 { 428 struct ark_rx_queue *queue; 429 430 queue = dev->data->rx_queues[queue_id]; 431 if (queue == 0) 432 return -1; 433 434 ark_udm_queue_enable(queue->udm, 0); 435 436 dev->data->rx_queue_state[queue_id] = RTE_ETH_QUEUE_STATE_STOPPED; 437 438 return 0; 439 } 440 441 /* ************************************************************************* */ 442 static inline int 443 eth_ark_rx_seed_mbufs(struct ark_rx_queue *queue) 444 { 445 uint32_t limit = queue->cons_index + queue->queue_size; 446 uint32_t seed_index = queue->seed_index; 447 448 uint32_t count = 0; 449 uint32_t seed_m = queue->seed_index & queue->queue_mask; 450 451 uint32_t nb = limit - seed_index; 452 453 /* Handle wrap around -- remainder is filled on the next call */ 454 if (unlikely(seed_m + nb > queue->queue_size)) 455 nb = queue->queue_size - seed_m; 456 457 struct rte_mbuf **mbufs = &queue->reserve_q[seed_m]; 458 int status = rte_pktmbuf_alloc_bulk(queue->mb_pool, mbufs, nb); 459 460 if (unlikely(status != 0)) { 461 /* Try to recover from lack of mbufs in pool */ 462 status = eth_ark_rx_seed_recovery(queue, &nb, mbufs); 463 if (unlikely(status != 0)) { 464 return -1; 465 } 466 } 467 468 if (ARK_DEBUG_CORE) { /* DEBUG */ 469 while (count != nb) { 470 struct rte_mbuf *mbuf_init = 471 queue->reserve_q[seed_m + count]; 472 473 memset(mbuf_init->buf_addr, -1, 512); 474 *((uint32_t *)mbuf_init->buf_addr) = 475 seed_index + count; 476 *(uint16_t *)RTE_PTR_ADD(mbuf_init->buf_addr, 4) = 477 queue->phys_qid; 478 count++; 479 } 480 count = 0; 481 } /* DEBUG */ 482 queue->seed_index += nb; 483 484 /* Duff's device https://en.wikipedia.org/wiki/Duff's_device */ 485 switch (nb % 4) { 486 case 0: 487 while (count != nb) { 488 queue->paddress_q[seed_m++] = 489 (*mbufs++)->buf_iova; 490 count++; 491 /* FALLTHROUGH */ 492 case 3: 493 queue->paddress_q[seed_m++] = 494 (*mbufs++)->buf_iova; 495 count++; 496 /* FALLTHROUGH */ 497 case 2: 498 queue->paddress_q[seed_m++] = 499 (*mbufs++)->buf_iova; 500 count++; 501 /* FALLTHROUGH */ 502 case 1: 503 queue->paddress_q[seed_m++] = 504 (*mbufs++)->buf_iova; 505 count++; 506 /* FALLTHROUGH */ 507 508 } /* while (count != nb) */ 509 } /* switch */ 510 511 return 0; 512 } 513 514 int 515 eth_ark_rx_seed_recovery(struct ark_rx_queue *queue, 516 uint32_t *pnb, 517 struct rte_mbuf **mbufs) 518 { 519 int status = -1; 520 521 /* Ignore small allocation failures */ 522 if (*pnb <= 64) 523 return -1; 524 525 *pnb = 64U; 526 status = rte_pktmbuf_alloc_bulk(queue->mb_pool, mbufs, *pnb); 527 if (status != 0) { 528 ARK_PMD_LOG(NOTICE, 529 "ARK: Could not allocate %u mbufs from pool for RX queue %u;" 530 " %u free buffers remaining in queue\n", 531 *pnb, queue->queue_index, 532 queue->seed_index - queue->cons_index); 533 } 534 return status; 535 } 536 537 void 538 eth_ark_rx_dump_queue(struct rte_eth_dev *dev, uint16_t queue_id, 539 const char *msg) 540 { 541 struct ark_rx_queue *queue; 542 543 queue = dev->data->rx_queues[queue_id]; 544 545 ark_ethdev_rx_dump(msg, queue); 546 } 547 548 /* ************************************************************************* */ 549 /* Call on device closed no user API, queue is stopped */ 550 void 551 eth_ark_dev_rx_queue_release(void *vqueue) 552 { 553 struct ark_rx_queue *queue; 554 uint32_t i; 555 556 queue = (struct ark_rx_queue *)vqueue; 557 if (queue == 0) 558 return; 559 560 ark_udm_queue_enable(queue->udm, 0); 561 /* Stop the MPU since pointer are going away */ 562 ark_mpu_stop(queue->mpu); 563 564 /* Need to clear out mbufs here, dropping packets along the way */ 565 eth_ark_rx_queue_drain(queue); 566 567 for (i = 0; i < queue->queue_size; ++i) 568 rte_pktmbuf_free(queue->reserve_q[i]); 569 570 rte_free(queue->reserve_q); 571 rte_free(queue->paddress_q); 572 rte_free(queue); 573 } 574 575 void 576 eth_rx_queue_stats_get(void *vqueue, struct rte_eth_stats *stats) 577 { 578 struct ark_rx_queue *queue; 579 struct ark_udm_t *udm; 580 581 queue = vqueue; 582 if (queue == 0) 583 return; 584 udm = queue->udm; 585 586 uint64_t ibytes = ark_udm_bytes(udm); 587 uint64_t ipackets = ark_udm_packets(udm); 588 uint64_t idropped = ark_udm_dropped(queue->udm); 589 590 stats->q_ipackets[queue->queue_index] = ipackets; 591 stats->q_ibytes[queue->queue_index] = ibytes; 592 stats->q_errors[queue->queue_index] = idropped; 593 stats->ipackets += ipackets; 594 stats->ibytes += ibytes; 595 stats->imissed += idropped; 596 } 597 598 void 599 eth_rx_queue_stats_reset(void *vqueue) 600 { 601 struct ark_rx_queue *queue; 602 603 queue = vqueue; 604 if (queue == 0) 605 return; 606 607 ark_mpu_reset_stats(queue->mpu); 608 ark_udm_queue_stats_reset(queue->udm); 609 } 610 611 void 612 eth_ark_udm_force_close(struct rte_eth_dev *dev) 613 { 614 struct ark_adapter *ark = dev->data->dev_private; 615 struct ark_rx_queue *queue; 616 uint32_t index; 617 uint16_t i; 618 619 if (!ark_udm_is_flushed(ark->udm.v)) { 620 /* restart the MPUs */ 621 ARK_PMD_LOG(NOTICE, "UDM not flushed -- forcing flush\n"); 622 for (i = 0; i < dev->data->nb_rx_queues; i++) { 623 queue = (struct ark_rx_queue *)dev->data->rx_queues[i]; 624 if (queue == 0) 625 continue; 626 627 ark_mpu_start(queue->mpu); 628 /* Add some buffers */ 629 index = 100000 + queue->seed_index; 630 ark_mpu_set_producer(queue->mpu, index); 631 } 632 /* Wait to allow data to pass */ 633 usleep(100); 634 635 ARK_PMD_LOG(DEBUG, "UDM forced flush attempt, stopped = %d\n", 636 ark_udm_is_flushed(ark->udm.v)); 637 } 638 ark_udm_reset(ark->udm.v); 639 } 640 641 static void 642 ark_ethdev_rx_dump(const char *name, struct ark_rx_queue *queue) 643 { 644 if (queue == NULL) 645 return; 646 ARK_PMD_LOG(DEBUG, "RX QUEUE %d -- %s", queue->phys_qid, name); 647 ARK_PMD_LOG(DEBUG, ARK_SU32 ARK_SU32 ARK_SU32 ARK_SU32 "\n", 648 "queue_size", queue->queue_size, 649 "seed_index", queue->seed_index, 650 "prod_index", queue->prod_index, 651 "cons_index", queue->cons_index); 652 653 ark_mpu_dump(queue->mpu, name, queue->phys_qid); 654 ark_mpu_dump_setup(queue->mpu, queue->phys_qid); 655 ark_udm_dump(queue->udm, name); 656 ark_udm_dump_setup(queue->udm, queue->phys_qid); 657 } 658 659 /* Only used in debug. 660 * This function is a raw memory dump of a portion of an mbuf's memory 661 * region. The usual function, rte_pktmbuf_dump() only shows data 662 * with respect to the data_off field. This function show data 663 * anywhere in the mbuf's buffer. This is useful for examining 664 * data in the headroom or tailroom portion of an mbuf. 665 */ 666 static void 667 dump_mbuf_data(struct rte_mbuf *mbuf, uint16_t lo, uint16_t hi) 668 { 669 uint16_t i, j; 670 671 ARK_PMD_LOG(DEBUG, " MBUF: %p len %d, off: %d\n", 672 mbuf, mbuf->pkt_len, mbuf->data_off); 673 for (i = lo; i < hi; i += 16) { 674 uint8_t *dp = RTE_PTR_ADD(mbuf->buf_addr, i); 675 676 ARK_PMD_LOG(DEBUG, " %6d: ", i); 677 for (j = 0; j < 16; j++) 678 ARK_PMD_LOG(DEBUG, " %02x", dp[j]); 679 680 ARK_PMD_LOG(DEBUG, "\n"); 681 } 682 } 683