summaryrefslogtreecommitdiffstats
path: root/drivers/net/ark/ark_ethdev_rx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/ark/ark_ethdev_rx.c')
-rw-r--r--drivers/net/ark/ark_ethdev_rx.c673
1 files changed, 673 insertions, 0 deletions
diff --git a/drivers/net/ark/ark_ethdev_rx.c b/drivers/net/ark/ark_ethdev_rx.c
new file mode 100644
index 00000000..f39e6f68
--- /dev/null
+++ b/drivers/net/ark/ark_ethdev_rx.c
@@ -0,0 +1,673 @@
+/*-
+ * BSD LICENSE
+ *
+ * Copyright (c) 2015-2017 Atomic Rules LLC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of copyright holder nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <unistd.h>
+
+#include "ark_ethdev_rx.h"
+#include "ark_global.h"
+#include "ark_logs.h"
+#include "ark_ethdev.h"
+#include "ark_mpu.h"
+#include "ark_udm.h"
+
+#define ARK_RX_META_SIZE 32
+#define ARK_RX_META_OFFSET (RTE_PKTMBUF_HEADROOM - ARK_RX_META_SIZE)
+#define ARK_RX_MAX_NOCHAIN (RTE_MBUF_DEFAULT_DATAROOM)
+
+/* Forward declarations */
+struct ark_rx_queue;
+struct ark_rx_meta;
+
+static void dump_mbuf_data(struct rte_mbuf *mbuf, uint16_t lo, uint16_t hi);
+static void ark_ethdev_rx_dump(const char *name, struct ark_rx_queue *queue);
+static uint32_t eth_ark_rx_jumbo(struct ark_rx_queue *queue,
+ struct ark_rx_meta *meta,
+ struct rte_mbuf *mbuf0,
+ uint32_t cons_index);
+static inline int eth_ark_rx_seed_mbufs(struct ark_rx_queue *queue);
+
+/* ************************************************************************* */
+struct ark_rx_queue {
+ /* array of mbufs to populate */
+ struct rte_mbuf **reserve_q;
+ /* array of physical addresses of the mbuf data pointer */
+ /* This point is a virtual address */
+ phys_addr_t *paddress_q;
+ struct rte_mempool *mb_pool;
+
+ struct ark_udm_t *udm;
+ struct ark_mpu_t *mpu;
+
+ uint32_t queue_size;
+ uint32_t queue_mask;
+
+ uint32_t seed_index; /* step 1 set with empty mbuf */
+ uint32_t cons_index; /* step 3 consumed by driver */
+
+ /* The queue Id is used to identify the HW Q */
+ uint16_t phys_qid;
+
+ /* The queue Index is used within the dpdk device structures */
+ uint16_t queue_index;
+
+ uint32_t pad1;
+
+ /* separate cache line */
+ /* second cache line - fields only used in slow path */
+ MARKER cacheline1 __rte_cache_min_aligned;
+
+ volatile uint32_t prod_index; /* step 2 filled by FPGA */
+} __rte_cache_aligned;
+
+
+/* ************************************************************************* */
+static int
+eth_ark_rx_hw_setup(struct rte_eth_dev *dev,
+ struct ark_rx_queue *queue,
+ uint16_t rx_queue_id __rte_unused, uint16_t rx_queue_idx)
+{
+ phys_addr_t queue_base;
+ phys_addr_t phys_addr_q_base;
+ phys_addr_t phys_addr_prod_index;
+
+ queue_base = rte_malloc_virt2phy(queue);
+ phys_addr_prod_index = queue_base +
+ offsetof(struct ark_rx_queue, prod_index);
+
+ phys_addr_q_base = rte_malloc_virt2phy(queue->paddress_q);
+
+ /* Verify HW */
+ if (ark_mpu_verify(queue->mpu, sizeof(phys_addr_t))) {
+ PMD_DRV_LOG(ERR, "Illegal configuration rx queue\n");
+ return -1;
+ }
+
+ /* Stop and Reset and configure MPU */
+ ark_mpu_configure(queue->mpu, phys_addr_q_base, queue->queue_size, 0);
+
+ ark_udm_write_addr(queue->udm, phys_addr_prod_index);
+
+ /* advance the valid pointer, but don't start until the queue starts */
+ ark_mpu_reset_stats(queue->mpu);
+
+ /* The seed is the producer index for the HW */
+ ark_mpu_set_producer(queue->mpu, queue->seed_index);
+ dev->data->rx_queue_state[rx_queue_idx] = RTE_ETH_QUEUE_STATE_STOPPED;
+
+ return 0;
+}
+
+static inline void
+eth_ark_rx_update_cons_index(struct ark_rx_queue *queue, uint32_t cons_index)
+{
+ queue->cons_index = cons_index;
+ eth_ark_rx_seed_mbufs(queue);
+ ark_mpu_set_producer(queue->mpu, queue->seed_index);
+}
+
+/* ************************************************************************* */
+int
+eth_ark_dev_rx_queue_setup(struct rte_eth_dev *dev,
+ uint16_t queue_idx,
+ uint16_t nb_desc,
+ unsigned int socket_id,
+ const struct rte_eth_rxconf *rx_conf,
+ struct rte_mempool *mb_pool)
+{
+ static int warning1; /* = 0 */
+ struct ark_adapter *ark = (struct ark_adapter *)dev->data->dev_private;
+
+ struct ark_rx_queue *queue;
+ uint32_t i;
+ int status;
+
+ /* Future works: divide the Q's evenly with multi-ports */
+ int port = dev->data->port_id;
+ int qidx = port + queue_idx;
+
+ /* We may already be setup, free memory prior to re-allocation */
+ if (dev->data->rx_queues[queue_idx] != NULL) {
+ eth_ark_dev_rx_queue_release(dev->data->rx_queues[queue_idx]);
+ dev->data->rx_queues[queue_idx] = NULL;
+ }
+
+ if (rx_conf != NULL && warning1 == 0) {
+ warning1 = 1;
+ PMD_DRV_LOG(INFO,
+ "Arkville ignores rte_eth_rxconf argument.\n");
+ }
+
+ if (RTE_PKTMBUF_HEADROOM < ARK_RX_META_SIZE) {
+ PMD_DRV_LOG(ERR,
+ "Error: DPDK Arkville requires head room > %d bytes (%s)\n",
+ ARK_RX_META_SIZE, __func__);
+ return -1; /* ERROR CODE */
+ }
+
+ if (!rte_is_power_of_2(nb_desc)) {
+ PMD_DRV_LOG(ERR,
+ "DPDK Arkville configuration queue size must be power of two %u (%s)\n",
+ nb_desc, __func__);
+ return -1; /* ERROR CODE */
+ }
+
+ /* Allocate queue struct */
+ queue = rte_zmalloc_socket("Ark_rxqueue",
+ sizeof(struct ark_rx_queue),
+ 64,
+ socket_id);
+ if (queue == 0) {
+ PMD_DRV_LOG(ERR, "Failed to allocate memory in %s\n", __func__);
+ return -ENOMEM;
+ }
+
+ /* NOTE zmalloc is used, no need to 0 indexes, etc. */
+ queue->mb_pool = mb_pool;
+ queue->phys_qid = qidx;
+ queue->queue_index = queue_idx;
+ queue->queue_size = nb_desc;
+ queue->queue_mask = nb_desc - 1;
+
+ queue->reserve_q =
+ rte_zmalloc_socket("Ark_rx_queue mbuf",
+ nb_desc * sizeof(struct rte_mbuf *),
+ 64,
+ socket_id);
+ queue->paddress_q =
+ rte_zmalloc_socket("Ark_rx_queue paddr",
+ nb_desc * sizeof(phys_addr_t),
+ 64,
+ socket_id);
+
+ if (queue->reserve_q == 0 || queue->paddress_q == 0) {
+ PMD_DRV_LOG(ERR,
+ "Failed to allocate queue memory in %s\n",
+ __func__);
+ rte_free(queue->reserve_q);
+ rte_free(queue->paddress_q);
+ rte_free(queue);
+ return -ENOMEM;
+ }
+
+ dev->data->rx_queues[queue_idx] = queue;
+ queue->udm = RTE_PTR_ADD(ark->udm.v, qidx * ARK_UDM_QOFFSET);
+ queue->mpu = RTE_PTR_ADD(ark->mpurx.v, qidx * ARK_MPU_QOFFSET);
+
+ /* populate mbuf reserve */
+ status = eth_ark_rx_seed_mbufs(queue);
+
+ /* MPU Setup */
+ if (status == 0)
+ status = eth_ark_rx_hw_setup(dev, queue, qidx, queue_idx);
+
+ if (unlikely(status != 0)) {
+ struct rte_mbuf *mbuf;
+
+ PMD_DRV_LOG(ERR, "Failed to initialize RX queue %d %s\n",
+ qidx,
+ __func__);
+ /* Free the mbufs allocated */
+ for (i = 0, mbuf = queue->reserve_q[0];
+ i < nb_desc; ++i, mbuf++) {
+ rte_pktmbuf_free(mbuf);
+ }
+ rte_free(queue->reserve_q);
+ rte_free(queue->paddress_q);
+ rte_free(queue);
+ return -1; /* ERROR CODE */
+ }
+
+ return 0;
+}
+
+/* ************************************************************************* */
+uint16_t
+eth_ark_recv_pkts_noop(void *rx_queue __rte_unused,
+ struct rte_mbuf **rx_pkts __rte_unused,
+ uint16_t nb_pkts __rte_unused)
+{
+ return 0;
+}
+
+/* ************************************************************************* */
+uint16_t
+eth_ark_recv_pkts(void *rx_queue,
+ struct rte_mbuf **rx_pkts,
+ uint16_t nb_pkts)
+{
+ struct ark_rx_queue *queue;
+ register uint32_t cons_index, prod_index;
+ uint16_t nb;
+ struct rte_mbuf *mbuf;
+ struct ark_rx_meta *meta;
+
+ queue = (struct ark_rx_queue *)rx_queue;
+ if (unlikely(queue == 0))
+ return 0;
+ if (unlikely(nb_pkts == 0))
+ return 0;
+ prod_index = queue->prod_index;
+ cons_index = queue->cons_index;
+ nb = 0;
+
+ while (prod_index != cons_index) {
+ mbuf = queue->reserve_q[cons_index & queue->queue_mask];
+ /* prefetch mbuf */
+ rte_mbuf_prefetch_part1(mbuf);
+ rte_mbuf_prefetch_part2(mbuf);
+
+ /* META DATA embedded in headroom */
+ meta = RTE_PTR_ADD(mbuf->buf_addr, ARK_RX_META_OFFSET);
+
+ mbuf->port = meta->port;
+ mbuf->pkt_len = meta->pkt_len;
+ mbuf->data_len = meta->pkt_len;
+ mbuf->timestamp = meta->timestamp;
+ mbuf->udata64 = meta->user_data;
+
+ if (ARK_RX_DEBUG) { /* debug sanity checks */
+ if ((meta->pkt_len > (1024 * 16)) ||
+ (meta->pkt_len == 0)) {
+ PMD_RX_LOG(DEBUG, "RX: Bad Meta Q: %u"
+ " cons: %" PRIU32
+ " prod: %" PRIU32
+ " seed_index %" PRIU32
+ "\n",
+ queue->phys_qid,
+ cons_index,
+ queue->prod_index,
+ queue->seed_index);
+
+
+ PMD_RX_LOG(DEBUG, " : UDM"
+ " prod: %" PRIU32
+ " len: %u\n",
+ queue->udm->rt_cfg.prod_idx,
+ meta->pkt_len);
+ ark_mpu_dump(queue->mpu,
+ " ",
+ queue->phys_qid);
+ dump_mbuf_data(mbuf, 0, 256);
+ /* its FUBAR so fix it */
+ mbuf->pkt_len = 63;
+ meta->pkt_len = 63;
+ }
+ /* seqn is only set under debug */
+ mbuf->seqn = cons_index;
+ }
+
+ if (unlikely(meta->pkt_len > ARK_RX_MAX_NOCHAIN))
+ cons_index = eth_ark_rx_jumbo
+ (queue, meta, mbuf, cons_index + 1);
+ else
+ cons_index += 1;
+
+ rx_pkts[nb] = mbuf;
+ nb++;
+ if (nb >= nb_pkts)
+ break;
+ }
+
+ if (unlikely(nb != 0))
+ /* report next free to FPGA */
+ eth_ark_rx_update_cons_index(queue, cons_index);
+
+ return nb;
+}
+
+/* ************************************************************************* */
+static uint32_t
+eth_ark_rx_jumbo(struct ark_rx_queue *queue,
+ struct ark_rx_meta *meta,
+ struct rte_mbuf *mbuf0,
+ uint32_t cons_index)
+{
+ struct rte_mbuf *mbuf_prev;
+ struct rte_mbuf *mbuf;
+
+ uint16_t remaining;
+ uint16_t data_len;
+ uint8_t segments;
+
+ /* first buf populated by called */
+ mbuf_prev = mbuf0;
+ segments = 1;
+ data_len = RTE_MIN(meta->pkt_len, RTE_MBUF_DEFAULT_DATAROOM);
+ remaining = meta->pkt_len - data_len;
+ mbuf0->data_len = data_len;
+
+ /* HW guarantees that the data does not exceed prod_index! */
+ while (remaining != 0) {
+ data_len = RTE_MIN(remaining,
+ RTE_MBUF_DEFAULT_DATAROOM +
+ RTE_PKTMBUF_HEADROOM);
+
+ remaining -= data_len;
+ segments += 1;
+
+ mbuf = queue->reserve_q[cons_index & queue->queue_mask];
+ mbuf_prev->next = mbuf;
+ mbuf_prev = mbuf;
+ mbuf->data_len = data_len;
+ mbuf->data_off = 0;
+ if (ARK_RX_DEBUG)
+ mbuf->seqn = cons_index; /* for debug only */
+
+ cons_index += 1;
+ }
+
+ mbuf0->nb_segs = segments;
+ return cons_index;
+}
+
+/* Drain the internal queue allowing hw to clear out. */
+static void
+eth_ark_rx_queue_drain(struct ark_rx_queue *queue)
+{
+ register uint32_t cons_index;
+ struct rte_mbuf *mbuf;
+
+ cons_index = queue->cons_index;
+
+ /* NOT performance optimized, since this is a one-shot call */
+ while ((cons_index ^ queue->prod_index) & queue->queue_mask) {
+ mbuf = queue->reserve_q[cons_index & queue->queue_mask];
+ rte_pktmbuf_free(mbuf);
+ cons_index++;
+ eth_ark_rx_update_cons_index(queue, cons_index);
+ }
+}
+
+uint32_t
+eth_ark_dev_rx_queue_count(struct rte_eth_dev *dev, uint16_t queue_id)
+{
+ struct ark_rx_queue *queue;
+
+ queue = dev->data->rx_queues[queue_id];
+ return (queue->prod_index - queue->cons_index); /* mod arith */
+}
+
+/* ************************************************************************* */
+int
+eth_ark_rx_start_queue(struct rte_eth_dev *dev, uint16_t queue_id)
+{
+ struct ark_rx_queue *queue;
+
+ queue = dev->data->rx_queues[queue_id];
+ if (queue == 0)
+ return -1;
+
+ dev->data->rx_queue_state[queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
+
+ ark_mpu_set_producer(queue->mpu, queue->seed_index);
+ ark_mpu_start(queue->mpu);
+
+ ark_udm_queue_enable(queue->udm, 1);
+
+ return 0;
+}
+
+/* ************************************************************************* */
+
+/* Queue can be restarted. data remains
+ */
+int
+eth_ark_rx_stop_queue(struct rte_eth_dev *dev, uint16_t queue_id)
+{
+ struct ark_rx_queue *queue;
+
+ queue = dev->data->rx_queues[queue_id];
+ if (queue == 0)
+ return -1;
+
+ ark_udm_queue_enable(queue->udm, 0);
+
+ dev->data->rx_queue_state[queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
+
+ return 0;
+}
+
+/* ************************************************************************* */
+static inline int
+eth_ark_rx_seed_mbufs(struct ark_rx_queue *queue)
+{
+ uint32_t limit = queue->cons_index + queue->queue_size;
+ uint32_t seed_index = queue->seed_index;
+
+ uint32_t count = 0;
+ uint32_t seed_m = queue->seed_index & queue->queue_mask;
+
+ uint32_t nb = limit - seed_index;
+
+ /* Handle wrap around -- remainder is filled on the next call */
+ if (unlikely(seed_m + nb > queue->queue_size))
+ nb = queue->queue_size - seed_m;
+
+ struct rte_mbuf **mbufs = &queue->reserve_q[seed_m];
+ int status = rte_pktmbuf_alloc_bulk(queue->mb_pool, mbufs, nb);
+
+ if (unlikely(status != 0))
+ return -1;
+
+ if (ARK_RX_DEBUG) { /* DEBUG */
+ while (count != nb) {
+ struct rte_mbuf *mbuf_init =
+ queue->reserve_q[seed_m + count];
+
+ memset(mbuf_init->buf_addr, -1, 512);
+ *((uint32_t *)mbuf_init->buf_addr) =
+ seed_index + count;
+ *(uint16_t *)RTE_PTR_ADD(mbuf_init->buf_addr, 4) =
+ queue->phys_qid;
+ count++;
+ }
+ count = 0;
+ } /* DEBUG */
+ queue->seed_index += nb;
+
+ /* Duff's device https://en.wikipedia.org/wiki/Duff's_device */
+ switch (nb % 4) {
+ case 0:
+ while (count != nb) {
+ queue->paddress_q[seed_m++] =
+ (*mbufs++)->buf_physaddr;
+ count++;
+ /* FALLTHROUGH */
+ case 3:
+ queue->paddress_q[seed_m++] =
+ (*mbufs++)->buf_physaddr;
+ count++;
+ /* FALLTHROUGH */
+ case 2:
+ queue->paddress_q[seed_m++] =
+ (*mbufs++)->buf_physaddr;
+ count++;
+ /* FALLTHROUGH */
+ case 1:
+ queue->paddress_q[seed_m++] =
+ (*mbufs++)->buf_physaddr;
+ count++;
+ /* FALLTHROUGH */
+
+ } /* while (count != nb) */
+ } /* switch */
+
+ return 0;
+}
+
+void
+eth_ark_rx_dump_queue(struct rte_eth_dev *dev, uint16_t queue_id,
+ const char *msg)
+{
+ struct ark_rx_queue *queue;
+
+ queue = dev->data->rx_queues[queue_id];
+
+ ark_ethdev_rx_dump(msg, queue);
+}
+
+/* ************************************************************************* */
+/* Call on device closed no user API, queue is stopped */
+void
+eth_ark_dev_rx_queue_release(void *vqueue)
+{
+ struct ark_rx_queue *queue;
+ uint32_t i;
+
+ queue = (struct ark_rx_queue *)vqueue;
+ if (queue == 0)
+ return;
+
+ ark_udm_queue_enable(queue->udm, 0);
+ /* Stop the MPU since pointer are going away */
+ ark_mpu_stop(queue->mpu);
+
+ /* Need to clear out mbufs here, dropping packets along the way */
+ eth_ark_rx_queue_drain(queue);
+
+ for (i = 0; i < queue->queue_size; ++i)
+ rte_pktmbuf_free(queue->reserve_q[i]);
+
+ rte_free(queue->reserve_q);
+ rte_free(queue->paddress_q);
+ rte_free(queue);
+}
+
+void
+eth_rx_queue_stats_get(void *vqueue, struct rte_eth_stats *stats)
+{
+ struct ark_rx_queue *queue;
+ struct ark_udm_t *udm;
+
+ queue = vqueue;
+ if (queue == 0)
+ return;
+ udm = queue->udm;
+
+ uint64_t ibytes = ark_udm_bytes(udm);
+ uint64_t ipackets = ark_udm_packets(udm);
+ uint64_t idropped = ark_udm_dropped(queue->udm);
+
+ stats->q_ipackets[queue->queue_index] = ipackets;
+ stats->q_ibytes[queue->queue_index] = ibytes;
+ stats->q_errors[queue->queue_index] = idropped;
+ stats->ipackets += ipackets;
+ stats->ibytes += ibytes;
+ stats->imissed += idropped;
+}
+
+void
+eth_rx_queue_stats_reset(void *vqueue)
+{
+ struct ark_rx_queue *queue;
+
+ queue = vqueue;
+ if (queue == 0)
+ return;
+
+ ark_mpu_reset_stats(queue->mpu);
+ ark_udm_queue_stats_reset(queue->udm);
+}
+
+void
+eth_ark_udm_force_close(struct rte_eth_dev *dev)
+{
+ struct ark_adapter *ark = (struct ark_adapter *)dev->data->dev_private;
+ struct ark_rx_queue *queue;
+ uint32_t index;
+ uint16_t i;
+
+ if (!ark_udm_is_flushed(ark->udm.v)) {
+ /* restart the MPUs */
+ PMD_DRV_LOG(ERR, "ARK: %s UDM not flushed\n", __func__);
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ queue = (struct ark_rx_queue *)dev->data->rx_queues[i];
+ if (queue == 0)
+ continue;
+
+ ark_mpu_start(queue->mpu);
+ /* Add some buffers */
+ index = 100000 + queue->seed_index;
+ ark_mpu_set_producer(queue->mpu, index);
+ }
+ /* Wait to allow data to pass */
+ usleep(100);
+
+ PMD_DEBUG_LOG(DEBUG, "UDM forced flush attempt, stopped = %d\n",
+ ark_udm_is_flushed(ark->udm.v));
+ }
+ ark_udm_reset(ark->udm.v);
+}
+
+static void
+ark_ethdev_rx_dump(const char *name, struct ark_rx_queue *queue)
+{
+ if (queue == NULL)
+ return;
+ PMD_DEBUG_LOG(DEBUG, "RX QUEUE %d -- %s", queue->phys_qid, name);
+ PMD_DEBUG_LOG(DEBUG, ARK_SU32 ARK_SU32 ARK_SU32 ARK_SU32 "\n",
+ "queue_size", queue->queue_size,
+ "seed_index", queue->seed_index,
+ "prod_index", queue->prod_index,
+ "cons_index", queue->cons_index);
+
+ ark_mpu_dump(queue->mpu, name, queue->phys_qid);
+ ark_mpu_dump_setup(queue->mpu, queue->phys_qid);
+ ark_udm_dump(queue->udm, name);
+ ark_udm_dump_setup(queue->udm, queue->phys_qid);
+}
+
+/* Only used in debug.
+ * This function is a raw memory dump of a portion of an mbuf's memory
+ * region. The usual function, rte_pktmbuf_dump() only shows data
+ * with respect to the data_off field. This function show data
+ * anywhere in the mbuf's buffer. This is useful for examining
+ * data in the headroom or tailroom portion of an mbuf.
+ */
+static void
+dump_mbuf_data(struct rte_mbuf *mbuf, uint16_t lo, uint16_t hi)
+{
+ uint16_t i, j;
+
+ PMD_DRV_LOG(INFO, " MBUF: %p len %d, off: %d, seq: %" PRIU32 "\n", mbuf,
+ mbuf->pkt_len, mbuf->data_off, mbuf->seqn);
+ for (i = lo; i < hi; i += 16) {
+ uint8_t *dp = RTE_PTR_ADD(mbuf->buf_addr, i);
+
+ PMD_DRV_LOG(INFO, " %6d: ", i);
+ for (j = 0; j < 16; j++)
+ PMD_DRV_LOG(INFO, " %02x", dp[j]);
+
+ PMD_DRV_LOG(INFO, "\n");
+ }
+}