net/txgbe: support simple Tx
[dpdk.git] / drivers / net / ark / ark_ethdev_rx.c
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 }