build = false
reason = 'missing dependency, "libpcap"'
endif
-sources = files('rte_eth_pcap.c')
+sources = files(
+ 'pcap_ethdev.c',
+ 'pcap_osdep_@0@.c'.format(exec_env),
+)
ext_deps += pcap_dep
--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2016 Intel Corporation.
+ * Copyright(c) 2014 6WIND S.A.
+ * All rights reserved.
+ */
+
+#include <time.h>
+
+#include <pcap.h>
+
+#include <rte_cycles.h>
+#include <ethdev_driver.h>
+#include <ethdev_vdev.h>
+#include <rte_kvargs.h>
+#include <rte_malloc.h>
+#include <rte_mbuf.h>
+#include <rte_mbuf_dyn.h>
+#include <rte_bus_vdev.h>
+
+#include "pcap_osdep.h"
+
+#define RTE_ETH_PCAP_SNAPSHOT_LEN 65535
+#define RTE_ETH_PCAP_SNAPLEN RTE_ETHER_MAX_JUMBO_FRAME_LEN
+#define RTE_ETH_PCAP_PROMISC 1
+#define RTE_ETH_PCAP_TIMEOUT -1
+
+#define ETH_PCAP_RX_PCAP_ARG "rx_pcap"
+#define ETH_PCAP_TX_PCAP_ARG "tx_pcap"
+#define ETH_PCAP_RX_IFACE_ARG "rx_iface"
+#define ETH_PCAP_RX_IFACE_IN_ARG "rx_iface_in"
+#define ETH_PCAP_TX_IFACE_ARG "tx_iface"
+#define ETH_PCAP_IFACE_ARG "iface"
+#define ETH_PCAP_PHY_MAC_ARG "phy_mac"
+#define ETH_PCAP_INFINITE_RX_ARG "infinite_rx"
+
+#define ETH_PCAP_ARG_MAXLEN 64
+
+#define RTE_PMD_PCAP_MAX_QUEUES 16
+
+static char errbuf[PCAP_ERRBUF_SIZE];
+static struct timespec start_time;
+static uint64_t start_cycles;
+static uint64_t hz;
+static uint8_t iface_idx;
+
+static uint64_t timestamp_rx_dynflag;
+static int timestamp_dynfield_offset = -1;
+
+struct queue_stat {
+ volatile unsigned long pkts;
+ volatile unsigned long bytes;
+ volatile unsigned long err_pkts;
+};
+
+struct queue_missed_stat {
+ /* last value retrieved from pcap */
+ unsigned int pcap;
+ /* stores values lost by pcap stop or rollover */
+ unsigned long mnemonic;
+ /* value on last reset */
+ unsigned long reset;
+};
+
+struct pcap_rx_queue {
+ uint16_t port_id;
+ uint16_t queue_id;
+ struct rte_mempool *mb_pool;
+ struct queue_stat rx_stat;
+ struct queue_missed_stat missed_stat;
+ char name[PATH_MAX];
+ char type[ETH_PCAP_ARG_MAXLEN];
+
+ /* Contains pre-generated packets to be looped through */
+ struct rte_ring *pkts;
+};
+
+struct pcap_tx_queue {
+ uint16_t port_id;
+ uint16_t queue_id;
+ struct queue_stat tx_stat;
+ char name[PATH_MAX];
+ char type[ETH_PCAP_ARG_MAXLEN];
+};
+
+struct pmd_internals {
+ struct pcap_rx_queue rx_queue[RTE_PMD_PCAP_MAX_QUEUES];
+ struct pcap_tx_queue tx_queue[RTE_PMD_PCAP_MAX_QUEUES];
+ char devargs[ETH_PCAP_ARG_MAXLEN];
+ struct rte_ether_addr eth_addr;
+ int if_index;
+ int single_iface;
+ int phy_mac;
+ unsigned int infinite_rx;
+};
+
+struct pmd_process_private {
+ pcap_t *rx_pcap[RTE_PMD_PCAP_MAX_QUEUES];
+ pcap_t *tx_pcap[RTE_PMD_PCAP_MAX_QUEUES];
+ pcap_dumper_t *tx_dumper[RTE_PMD_PCAP_MAX_QUEUES];
+};
+
+struct pmd_devargs {
+ unsigned int num_of_queue;
+ struct devargs_queue {
+ pcap_dumper_t *dumper;
+ pcap_t *pcap;
+ const char *name;
+ const char *type;
+ } queue[RTE_PMD_PCAP_MAX_QUEUES];
+ int phy_mac;
+};
+
+struct pmd_devargs_all {
+ struct pmd_devargs rx_queues;
+ struct pmd_devargs tx_queues;
+ int single_iface;
+ unsigned int is_tx_pcap;
+ unsigned int is_tx_iface;
+ unsigned int is_rx_pcap;
+ unsigned int is_rx_iface;
+ unsigned int infinite_rx;
+};
+
+static const char *valid_arguments[] = {
+ ETH_PCAP_RX_PCAP_ARG,
+ ETH_PCAP_TX_PCAP_ARG,
+ ETH_PCAP_RX_IFACE_ARG,
+ ETH_PCAP_RX_IFACE_IN_ARG,
+ ETH_PCAP_TX_IFACE_ARG,
+ ETH_PCAP_IFACE_ARG,
+ ETH_PCAP_PHY_MAC_ARG,
+ ETH_PCAP_INFINITE_RX_ARG,
+ NULL
+};
+
+static struct rte_eth_link pmd_link = {
+ .link_speed = ETH_SPEED_NUM_10G,
+ .link_duplex = ETH_LINK_FULL_DUPLEX,
+ .link_status = ETH_LINK_DOWN,
+ .link_autoneg = ETH_LINK_FIXED,
+};
+
+RTE_LOG_REGISTER(eth_pcap_logtype, pmd.net.pcap, NOTICE);
+
+#define PMD_LOG(level, fmt, args...) \
+ rte_log(RTE_LOG_ ## level, eth_pcap_logtype, \
+ "%s(): " fmt "\n", __func__, ##args)
+
+static struct queue_missed_stat*
+queue_missed_stat_update(struct rte_eth_dev *dev, unsigned int qid)
+{
+ struct pmd_internals *internals = dev->data->dev_private;
+ struct queue_missed_stat *missed_stat =
+ &internals->rx_queue[qid].missed_stat;
+ const struct pmd_process_private *pp = dev->process_private;
+ pcap_t *pcap = pp->rx_pcap[qid];
+ struct pcap_stat stat;
+
+ if (!pcap || (pcap_stats(pcap, &stat) != 0))
+ return missed_stat;
+
+ /* rollover check - best effort fixup assuming single rollover */
+ if (stat.ps_drop < missed_stat->pcap)
+ missed_stat->mnemonic += UINT_MAX;
+ missed_stat->pcap = stat.ps_drop;
+
+ return missed_stat;
+}
+
+static void
+queue_missed_stat_on_stop_update(struct rte_eth_dev *dev, unsigned int qid)
+{
+ struct queue_missed_stat *missed_stat =
+ queue_missed_stat_update(dev, qid);
+
+ missed_stat->mnemonic += missed_stat->pcap;
+ missed_stat->pcap = 0;
+}
+
+static void
+queue_missed_stat_reset(struct rte_eth_dev *dev, unsigned int qid)
+{
+ struct queue_missed_stat *missed_stat =
+ queue_missed_stat_update(dev, qid);
+
+ missed_stat->reset = missed_stat->pcap;
+ missed_stat->mnemonic = 0;
+}
+
+static unsigned long
+queue_missed_stat_get(struct rte_eth_dev *dev, unsigned int qid)
+{
+ const struct queue_missed_stat *missed_stat =
+ queue_missed_stat_update(dev, qid);
+
+ return missed_stat->pcap + missed_stat->mnemonic - missed_stat->reset;
+}
+
+static int
+eth_pcap_rx_jumbo(struct rte_mempool *mb_pool, struct rte_mbuf *mbuf,
+ const u_char *data, uint16_t data_len)
+{
+ /* Copy the first segment. */
+ uint16_t len = rte_pktmbuf_tailroom(mbuf);
+ struct rte_mbuf *m = mbuf;
+
+ rte_memcpy(rte_pktmbuf_append(mbuf, len), data, len);
+ data_len -= len;
+ data += len;
+
+ while (data_len > 0) {
+ /* Allocate next mbuf and point to that. */
+ m->next = rte_pktmbuf_alloc(mb_pool);
+
+ if (unlikely(!m->next))
+ return -1;
+
+ m = m->next;
+
+ /* Headroom is not needed in chained mbufs. */
+ rte_pktmbuf_prepend(m, rte_pktmbuf_headroom(m));
+ m->pkt_len = 0;
+ m->data_len = 0;
+
+ /* Copy next segment. */
+ len = RTE_MIN(rte_pktmbuf_tailroom(m), data_len);
+ rte_memcpy(rte_pktmbuf_append(m, len), data, len);
+
+ mbuf->nb_segs++;
+ data_len -= len;
+ data += len;
+ }
+
+ return mbuf->nb_segs;
+}
+
+static uint16_t
+eth_pcap_rx_infinite(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
+{
+ int i;
+ struct pcap_rx_queue *pcap_q = queue;
+ uint32_t rx_bytes = 0;
+
+ if (unlikely(nb_pkts == 0))
+ return 0;
+
+ if (rte_pktmbuf_alloc_bulk(pcap_q->mb_pool, bufs, nb_pkts) != 0)
+ return 0;
+
+ for (i = 0; i < nb_pkts; i++) {
+ struct rte_mbuf *pcap_buf;
+ int err = rte_ring_dequeue(pcap_q->pkts, (void **)&pcap_buf);
+ if (err)
+ return i;
+
+ rte_memcpy(rte_pktmbuf_mtod(bufs[i], void *),
+ rte_pktmbuf_mtod(pcap_buf, void *),
+ pcap_buf->data_len);
+ bufs[i]->data_len = pcap_buf->data_len;
+ bufs[i]->pkt_len = pcap_buf->pkt_len;
+ bufs[i]->port = pcap_q->port_id;
+ rx_bytes += pcap_buf->data_len;
+
+ /* Enqueue packet back on ring to allow infinite rx. */
+ rte_ring_enqueue(pcap_q->pkts, pcap_buf);
+ }
+
+ pcap_q->rx_stat.pkts += i;
+ pcap_q->rx_stat.bytes += rx_bytes;
+
+ return i;
+}
+
+static uint16_t
+eth_pcap_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
+{
+ unsigned int i;
+ struct pcap_pkthdr header;
+ struct pmd_process_private *pp;
+ const u_char *packet;
+ struct rte_mbuf *mbuf;
+ struct pcap_rx_queue *pcap_q = queue;
+ uint16_t num_rx = 0;
+ uint32_t rx_bytes = 0;
+ pcap_t *pcap;
+
+ pp = rte_eth_devices[pcap_q->port_id].process_private;
+ pcap = pp->rx_pcap[pcap_q->queue_id];
+
+ if (unlikely(pcap == NULL || nb_pkts == 0))
+ return 0;
+
+ /* Reads the given number of packets from the pcap file one by one
+ * and copies the packet data into a newly allocated mbuf to return.
+ */
+ for (i = 0; i < nb_pkts; i++) {
+ /* Get the next PCAP packet */
+ packet = pcap_next(pcap, &header);
+ if (unlikely(packet == NULL))
+ break;
+
+ mbuf = rte_pktmbuf_alloc(pcap_q->mb_pool);
+ if (unlikely(mbuf == NULL))
+ break;
+
+ if (header.caplen <= rte_pktmbuf_tailroom(mbuf)) {
+ /* pcap packet will fit in the mbuf, can copy it */
+ rte_memcpy(rte_pktmbuf_mtod(mbuf, void *), packet,
+ header.caplen);
+ mbuf->data_len = (uint16_t)header.caplen;
+ } else {
+ /* Try read jumbo frame into multi mbufs. */
+ if (unlikely(eth_pcap_rx_jumbo(pcap_q->mb_pool,
+ mbuf,
+ packet,
+ header.caplen) == -1)) {
+ rte_pktmbuf_free(mbuf);
+ break;
+ }
+ }
+
+ mbuf->pkt_len = (uint16_t)header.caplen;
+ *RTE_MBUF_DYNFIELD(mbuf, timestamp_dynfield_offset,
+ rte_mbuf_timestamp_t *) =
+ (uint64_t)header.ts.tv_sec * 1000000 +
+ header.ts.tv_usec;
+ mbuf->ol_flags |= timestamp_rx_dynflag;
+ mbuf->port = pcap_q->port_id;
+ bufs[num_rx] = mbuf;
+ num_rx++;
+ rx_bytes += header.caplen;
+ }
+ pcap_q->rx_stat.pkts += num_rx;
+ pcap_q->rx_stat.bytes += rx_bytes;
+
+ return num_rx;
+}
+
+static uint16_t
+eth_null_rx(void *queue __rte_unused,
+ struct rte_mbuf **bufs __rte_unused,
+ uint16_t nb_pkts __rte_unused)
+{
+ return 0;
+}
+
+#define NSEC_PER_SEC 1000000000L
+
+/*
+ * This function stores nanoseconds in `tv_usec` field of `struct timeval`,
+ * because `ts` goes directly to nanosecond-precision dump.
+ */
+static inline void
+calculate_timestamp(struct timeval *ts) {
+ uint64_t cycles;
+ struct timespec cur_time;
+
+ cycles = rte_get_timer_cycles() - start_cycles;
+ cur_time.tv_sec = cycles / hz;
+ cur_time.tv_nsec = (cycles % hz) * NSEC_PER_SEC / hz;
+
+ ts->tv_sec = start_time.tv_sec + cur_time.tv_sec;
+ ts->tv_usec = start_time.tv_nsec + cur_time.tv_nsec;
+ if (ts->tv_usec >= NSEC_PER_SEC) {
+ ts->tv_usec -= NSEC_PER_SEC;
+ ts->tv_sec += 1;
+ }
+}
+
+/*
+ * Callback to handle writing packets to a pcap file.
+ */
+static uint16_t
+eth_pcap_tx_dumper(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
+{
+ unsigned int i;
+ struct rte_mbuf *mbuf;
+ struct pmd_process_private *pp;
+ struct pcap_tx_queue *dumper_q = queue;
+ uint16_t num_tx = 0;
+ uint32_t tx_bytes = 0;
+ struct pcap_pkthdr header;
+ pcap_dumper_t *dumper;
+ unsigned char temp_data[RTE_ETH_PCAP_SNAPLEN];
+ size_t len, caplen;
+
+ pp = rte_eth_devices[dumper_q->port_id].process_private;
+ dumper = pp->tx_dumper[dumper_q->queue_id];
+
+ if (dumper == NULL || nb_pkts == 0)
+ return 0;
+
+ /* writes the nb_pkts packets to the previously opened pcap file
+ * dumper */
+ for (i = 0; i < nb_pkts; i++) {
+ mbuf = bufs[i];
+ len = caplen = rte_pktmbuf_pkt_len(mbuf);
+ if (unlikely(!rte_pktmbuf_is_contiguous(mbuf) &&
+ len > sizeof(temp_data))) {
+ caplen = sizeof(temp_data);
+ }
+
+ calculate_timestamp(&header.ts);
+ header.len = len;
+ header.caplen = caplen;
+ /* rte_pktmbuf_read() returns a pointer to the data directly
+ * in the mbuf (when the mbuf is contiguous) or, otherwise,
+ * a pointer to temp_data after copying into it.
+ */
+ pcap_dump((u_char *)dumper, &header,
+ rte_pktmbuf_read(mbuf, 0, caplen, temp_data));
+
+ num_tx++;
+ tx_bytes += caplen;
+ rte_pktmbuf_free(mbuf);
+ }
+
+ /*
+ * Since there's no place to hook a callback when the forwarding
+ * process stops and to make sure the pcap file is actually written,
+ * we flush the pcap dumper within each burst.
+ */
+ pcap_dump_flush(dumper);
+ dumper_q->tx_stat.pkts += num_tx;
+ dumper_q->tx_stat.bytes += tx_bytes;
+ dumper_q->tx_stat.err_pkts += nb_pkts - num_tx;
+
+ return nb_pkts;
+}
+
+/*
+ * Callback to handle dropping packets in the infinite rx case.
+ */
+static uint16_t
+eth_tx_drop(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
+{
+ unsigned int i;
+ uint32_t tx_bytes = 0;
+ struct pcap_tx_queue *tx_queue = queue;
+
+ if (unlikely(nb_pkts == 0))
+ return 0;
+
+ for (i = 0; i < nb_pkts; i++) {
+ tx_bytes += bufs[i]->pkt_len;
+ rte_pktmbuf_free(bufs[i]);
+ }
+
+ tx_queue->tx_stat.pkts += nb_pkts;
+ tx_queue->tx_stat.bytes += tx_bytes;
+
+ return i;
+}
+
+/*
+ * Callback to handle sending packets through a real NIC.
+ */
+static uint16_t
+eth_pcap_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
+{
+ unsigned int i;
+ int ret;
+ struct rte_mbuf *mbuf;
+ struct pmd_process_private *pp;
+ struct pcap_tx_queue *tx_queue = queue;
+ uint16_t num_tx = 0;
+ uint32_t tx_bytes = 0;
+ pcap_t *pcap;
+ unsigned char temp_data[RTE_ETH_PCAP_SNAPLEN];
+ size_t len;
+
+ pp = rte_eth_devices[tx_queue->port_id].process_private;
+ pcap = pp->tx_pcap[tx_queue->queue_id];
+
+ if (unlikely(nb_pkts == 0 || pcap == NULL))
+ return 0;
+
+ for (i = 0; i < nb_pkts; i++) {
+ mbuf = bufs[i];
+ len = rte_pktmbuf_pkt_len(mbuf);
+ if (unlikely(!rte_pktmbuf_is_contiguous(mbuf) &&
+ len > sizeof(temp_data))) {
+ PMD_LOG(ERR,
+ "Dropping multi segment PCAP packet. Size (%zd) > max size (%zd).",
+ len, sizeof(temp_data));
+ rte_pktmbuf_free(mbuf);
+ continue;
+ }
+
+ /* rte_pktmbuf_read() returns a pointer to the data directly
+ * in the mbuf (when the mbuf is contiguous) or, otherwise,
+ * a pointer to temp_data after copying into it.
+ */
+ ret = pcap_sendpacket(pcap,
+ rte_pktmbuf_read(mbuf, 0, len, temp_data), len);
+ if (unlikely(ret != 0))
+ break;
+ num_tx++;
+ tx_bytes += len;
+ rte_pktmbuf_free(mbuf);
+ }
+
+ tx_queue->tx_stat.pkts += num_tx;
+ tx_queue->tx_stat.bytes += tx_bytes;
+ tx_queue->tx_stat.err_pkts += i - num_tx;
+
+ return i;
+}
+
+/*
+ * pcap_open_live wrapper function
+ */
+static inline int
+open_iface_live(const char *iface, pcap_t **pcap) {
+ *pcap = pcap_open_live(iface, RTE_ETH_PCAP_SNAPLEN,
+ RTE_ETH_PCAP_PROMISC, RTE_ETH_PCAP_TIMEOUT, errbuf);
+
+ if (*pcap == NULL) {
+ PMD_LOG(ERR, "Couldn't open %s: %s", iface, errbuf);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+open_single_iface(const char *iface, pcap_t **pcap)
+{
+ if (open_iface_live(iface, pcap) < 0) {
+ PMD_LOG(ERR, "Couldn't open interface %s", iface);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int
+open_single_tx_pcap(const char *pcap_filename, pcap_dumper_t **dumper)
+{
+ pcap_t *tx_pcap;
+
+ /*
+ * We need to create a dummy empty pcap_t to use it
+ * with pcap_dump_open(). We create big enough an Ethernet
+ * pcap holder.
+ */
+ tx_pcap = pcap_open_dead_with_tstamp_precision(DLT_EN10MB,
+ RTE_ETH_PCAP_SNAPSHOT_LEN, PCAP_TSTAMP_PRECISION_NANO);
+ if (tx_pcap == NULL) {
+ PMD_LOG(ERR, "Couldn't create dead pcap");
+ return -1;
+ }
+
+ /* The dumper is created using the previous pcap_t reference */
+ *dumper = pcap_dump_open(tx_pcap, pcap_filename);
+ if (*dumper == NULL) {
+ pcap_close(tx_pcap);
+ PMD_LOG(ERR, "Couldn't open %s for writing.",
+ pcap_filename);
+ return -1;
+ }
+
+ pcap_close(tx_pcap);
+ return 0;
+}
+
+static int
+open_single_rx_pcap(const char *pcap_filename, pcap_t **pcap)
+{
+ *pcap = pcap_open_offline(pcap_filename, errbuf);
+ if (*pcap == NULL) {
+ PMD_LOG(ERR, "Couldn't open %s: %s", pcap_filename,
+ errbuf);
+ return -1;
+ }
+
+ return 0;
+}
+
+static uint64_t
+count_packets_in_pcap(pcap_t **pcap, struct pcap_rx_queue *pcap_q)
+{
+ const u_char *packet;
+ struct pcap_pkthdr header;
+ uint64_t pcap_pkt_count = 0;
+
+ while ((packet = pcap_next(*pcap, &header)))
+ pcap_pkt_count++;
+
+ /* The pcap is reopened so it can be used as normal later. */
+ pcap_close(*pcap);
+ *pcap = NULL;
+ open_single_rx_pcap(pcap_q->name, pcap);
+
+ return pcap_pkt_count;
+}
+
+static int
+eth_dev_start(struct rte_eth_dev *dev)
+{
+ unsigned int i;
+ struct pmd_internals *internals = dev->data->dev_private;
+ struct pmd_process_private *pp = dev->process_private;
+ struct pcap_tx_queue *tx;
+ struct pcap_rx_queue *rx;
+
+ /* Special iface case. Single pcap is open and shared between tx/rx. */
+ if (internals->single_iface) {
+ tx = &internals->tx_queue[0];
+ rx = &internals->rx_queue[0];
+
+ if (!pp->tx_pcap[0] &&
+ strcmp(tx->type, ETH_PCAP_IFACE_ARG) == 0) {
+ if (open_single_iface(tx->name, &pp->tx_pcap[0]) < 0)
+ return -1;
+ pp->rx_pcap[0] = pp->tx_pcap[0];
+ }
+
+ goto status_up;
+ }
+
+ /* If not open already, open tx pcaps/dumpers */
+ for (i = 0; i < dev->data->nb_tx_queues; i++) {
+ tx = &internals->tx_queue[i];
+
+ if (!pp->tx_dumper[i] &&
+ strcmp(tx->type, ETH_PCAP_TX_PCAP_ARG) == 0) {
+ if (open_single_tx_pcap(tx->name,
+ &pp->tx_dumper[i]) < 0)
+ return -1;
+ } else if (!pp->tx_pcap[i] &&
+ strcmp(tx->type, ETH_PCAP_TX_IFACE_ARG) == 0) {
+ if (open_single_iface(tx->name, &pp->tx_pcap[i]) < 0)
+ return -1;
+ }
+ }
+
+ /* If not open already, open rx pcaps */
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ rx = &internals->rx_queue[i];
+
+ if (pp->rx_pcap[i] != NULL)
+ continue;
+
+ if (strcmp(rx->type, ETH_PCAP_RX_PCAP_ARG) == 0) {
+ if (open_single_rx_pcap(rx->name, &pp->rx_pcap[i]) < 0)
+ return -1;
+ } else if (strcmp(rx->type, ETH_PCAP_RX_IFACE_ARG) == 0) {
+ if (open_single_iface(rx->name, &pp->rx_pcap[i]) < 0)
+ return -1;
+ }
+ }
+
+status_up:
+ for (i = 0; i < dev->data->nb_rx_queues; i++)
+ dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;
+
+ for (i = 0; i < dev->data->nb_tx_queues; i++)
+ dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;
+
+ dev->data->dev_link.link_status = ETH_LINK_UP;
+
+ return 0;
+}
+
+/*
+ * This function gets called when the current port gets stopped.
+ * Is the only place for us to close all the tx streams dumpers.
+ * If not called the dumpers will be flushed within each tx burst.
+ */
+static int
+eth_dev_stop(struct rte_eth_dev *dev)
+{
+ unsigned int i;
+ struct pmd_internals *internals = dev->data->dev_private;
+ struct pmd_process_private *pp = dev->process_private;
+
+ /* Special iface case. Single pcap is open and shared between tx/rx. */
+ if (internals->single_iface) {
+ queue_missed_stat_on_stop_update(dev, 0);
+ if (pp->tx_pcap[0] != NULL) {
+ pcap_close(pp->tx_pcap[0]);
+ pp->tx_pcap[0] = NULL;
+ pp->rx_pcap[0] = NULL;
+ }
+ goto status_down;
+ }
+
+ for (i = 0; i < dev->data->nb_tx_queues; i++) {
+ if (pp->tx_dumper[i] != NULL) {
+ pcap_dump_close(pp->tx_dumper[i]);
+ pp->tx_dumper[i] = NULL;
+ }
+
+ if (pp->tx_pcap[i] != NULL) {
+ pcap_close(pp->tx_pcap[i]);
+ pp->tx_pcap[i] = NULL;
+ }
+ }
+
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ if (pp->rx_pcap[i] != NULL) {
+ queue_missed_stat_on_stop_update(dev, i);
+ pcap_close(pp->rx_pcap[i]);
+ pp->rx_pcap[i] = NULL;
+ }
+ }
+
+status_down:
+ for (i = 0; i < dev->data->nb_rx_queues; i++)
+ dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
+
+ for (i = 0; i < dev->data->nb_tx_queues; i++)
+ dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
+
+ dev->data->dev_link.link_status = ETH_LINK_DOWN;
+
+ return 0;
+}
+
+static int
+eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
+{
+ return 0;
+}
+
+static int
+eth_dev_info(struct rte_eth_dev *dev,
+ struct rte_eth_dev_info *dev_info)
+{
+ struct pmd_internals *internals = dev->data->dev_private;
+
+ dev_info->if_index = internals->if_index;
+ dev_info->max_mac_addrs = 1;
+ dev_info->max_rx_pktlen = (uint32_t) -1;
+ dev_info->max_rx_queues = dev->data->nb_rx_queues;
+ dev_info->max_tx_queues = dev->data->nb_tx_queues;
+ dev_info->min_rx_bufsize = 0;
+
+ return 0;
+}
+
+static int
+eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
+{
+ unsigned int i;
+ unsigned long rx_packets_total = 0, rx_bytes_total = 0;
+ unsigned long rx_missed_total = 0;
+ unsigned long tx_packets_total = 0, tx_bytes_total = 0;
+ unsigned long tx_packets_err_total = 0;
+ const struct pmd_internals *internal = dev->data->dev_private;
+
+ for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
+ i < dev->data->nb_rx_queues; i++) {
+ stats->q_ipackets[i] = internal->rx_queue[i].rx_stat.pkts;
+ stats->q_ibytes[i] = internal->rx_queue[i].rx_stat.bytes;
+ rx_packets_total += stats->q_ipackets[i];
+ rx_bytes_total += stats->q_ibytes[i];
+ rx_missed_total += queue_missed_stat_get(dev, i);
+ }
+
+ for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
+ i < dev->data->nb_tx_queues; i++) {
+ stats->q_opackets[i] = internal->tx_queue[i].tx_stat.pkts;
+ stats->q_obytes[i] = internal->tx_queue[i].tx_stat.bytes;
+ tx_packets_total += stats->q_opackets[i];
+ tx_bytes_total += stats->q_obytes[i];
+ tx_packets_err_total += internal->tx_queue[i].tx_stat.err_pkts;
+ }
+
+ stats->ipackets = rx_packets_total;
+ stats->ibytes = rx_bytes_total;
+ stats->imissed = rx_missed_total;
+ stats->opackets = tx_packets_total;
+ stats->obytes = tx_bytes_total;
+ stats->oerrors = tx_packets_err_total;
+
+ return 0;
+}
+
+static int
+eth_stats_reset(struct rte_eth_dev *dev)
+{
+ unsigned int i;
+ struct pmd_internals *internal = dev->data->dev_private;
+
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ internal->rx_queue[i].rx_stat.pkts = 0;
+ internal->rx_queue[i].rx_stat.bytes = 0;
+ queue_missed_stat_reset(dev, i);
+ }
+
+ for (i = 0; i < dev->data->nb_tx_queues; i++) {
+ internal->tx_queue[i].tx_stat.pkts = 0;
+ internal->tx_queue[i].tx_stat.bytes = 0;
+ internal->tx_queue[i].tx_stat.err_pkts = 0;
+ }
+
+ return 0;
+}
+
+static inline void
+infinite_rx_ring_free(struct rte_ring *pkts)
+{
+ struct rte_mbuf *bufs;
+
+ while (!rte_ring_dequeue(pkts, (void **)&bufs))
+ rte_pktmbuf_free(bufs);
+
+ rte_ring_free(pkts);
+}
+
+static int
+eth_dev_close(struct rte_eth_dev *dev)
+{
+ unsigned int i;
+ struct pmd_internals *internals = dev->data->dev_private;
+
+ PMD_LOG(INFO, "Closing pcap ethdev on NUMA socket %d",
+ rte_socket_id());
+
+ eth_dev_stop(dev);
+
+ rte_free(dev->process_private);
+
+ if (rte_eal_process_type() != RTE_PROC_PRIMARY)
+ return 0;
+
+ /* Device wide flag, but cleanup must be performed per queue. */
+ if (internals->infinite_rx) {
+ for (i = 0; i < dev->data->nb_rx_queues; i++) {
+ struct pcap_rx_queue *pcap_q = &internals->rx_queue[i];
+
+ /*
+ * 'pcap_q->pkts' can be NULL if 'eth_dev_close()'
+ * called before 'eth_rx_queue_setup()' has been called
+ */
+ if (pcap_q->pkts == NULL)
+ continue;
+
+ infinite_rx_ring_free(pcap_q->pkts);
+ }
+ }
+
+ if (internals->phy_mac == 0)
+ /* not dynamically allocated, must not be freed */
+ dev->data->mac_addrs = NULL;
+
+ return 0;
+}
+
+static void
+eth_queue_release(void *q __rte_unused)
+{
+}
+
+static int
+eth_link_update(struct rte_eth_dev *dev __rte_unused,
+ int wait_to_complete __rte_unused)
+{
+ return 0;
+}
+
+static int
+eth_rx_queue_setup(struct rte_eth_dev *dev,
+ uint16_t rx_queue_id,
+ uint16_t nb_rx_desc __rte_unused,
+ unsigned int socket_id __rte_unused,
+ const struct rte_eth_rxconf *rx_conf __rte_unused,
+ struct rte_mempool *mb_pool)
+{
+ struct pmd_internals *internals = dev->data->dev_private;
+ struct pcap_rx_queue *pcap_q = &internals->rx_queue[rx_queue_id];
+
+ pcap_q->mb_pool = mb_pool;
+ pcap_q->port_id = dev->data->port_id;
+ pcap_q->queue_id = rx_queue_id;
+ dev->data->rx_queues[rx_queue_id] = pcap_q;
+
+ if (internals->infinite_rx) {
+ struct pmd_process_private *pp;
+ char ring_name[RTE_RING_NAMESIZE];
+ static uint32_t ring_number;
+ uint64_t pcap_pkt_count = 0;
+ struct rte_mbuf *bufs[1];
+ pcap_t **pcap;
+
+ pp = rte_eth_devices[pcap_q->port_id].process_private;
+ pcap = &pp->rx_pcap[pcap_q->queue_id];
+
+ if (unlikely(*pcap == NULL))
+ return -ENOENT;
+
+ pcap_pkt_count = count_packets_in_pcap(pcap, pcap_q);
+
+ snprintf(ring_name, sizeof(ring_name), "PCAP_RING%" PRIu32,
+ ring_number);
+
+ pcap_q->pkts = rte_ring_create(ring_name,
+ rte_align64pow2(pcap_pkt_count + 1), 0,
+ RING_F_SP_ENQ | RING_F_SC_DEQ);
+ ring_number++;
+ if (!pcap_q->pkts)
+ return -ENOENT;
+
+ /* Fill ring with packets from PCAP file one by one. */
+ while (eth_pcap_rx(pcap_q, bufs, 1)) {
+ /* Check for multiseg mbufs. */
+ if (bufs[0]->nb_segs != 1) {
+ infinite_rx_ring_free(pcap_q->pkts);
+ PMD_LOG(ERR,
+ "Multiseg mbufs are not supported in infinite_rx mode.");
+ return -EINVAL;
+ }
+
+ rte_ring_enqueue_bulk(pcap_q->pkts,
+ (void * const *)bufs, 1, NULL);
+ }
+
+ if (rte_ring_count(pcap_q->pkts) < pcap_pkt_count) {
+ infinite_rx_ring_free(pcap_q->pkts);
+ PMD_LOG(ERR,
+ "Not enough mbufs to accommodate packets in pcap file. "
+ "At least %" PRIu64 " mbufs per queue is required.",
+ pcap_pkt_count);
+ return -EINVAL;
+ }
+
+ /*
+ * Reset the stats for this queue since eth_pcap_rx calls above
+ * didn't result in the application receiving packets.
+ */
+ pcap_q->rx_stat.pkts = 0;
+ pcap_q->rx_stat.bytes = 0;
+ }
+
+ return 0;
+}
+
+static int
+eth_tx_queue_setup(struct rte_eth_dev *dev,
+ uint16_t tx_queue_id,
+ uint16_t nb_tx_desc __rte_unused,
+ unsigned int socket_id __rte_unused,
+ const struct rte_eth_txconf *tx_conf __rte_unused)
+{
+ struct pmd_internals *internals = dev->data->dev_private;
+ struct pcap_tx_queue *pcap_q = &internals->tx_queue[tx_queue_id];
+
+ pcap_q->port_id = dev->data->port_id;
+ pcap_q->queue_id = tx_queue_id;
+ dev->data->tx_queues[tx_queue_id] = pcap_q;
+
+ return 0;
+}
+
+static int
+eth_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
+{
+ dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
+
+ return 0;
+}
+
+static int
+eth_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
+{
+ dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
+
+ return 0;
+}
+
+static int
+eth_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
+{
+ dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
+
+ return 0;
+}
+
+static int
+eth_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
+{
+ dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
+
+ return 0;
+}
+
+static const struct eth_dev_ops ops = {
+ .dev_start = eth_dev_start,
+ .dev_stop = eth_dev_stop,
+ .dev_close = eth_dev_close,
+ .dev_configure = eth_dev_configure,
+ .dev_infos_get = eth_dev_info,
+ .rx_queue_setup = eth_rx_queue_setup,
+ .tx_queue_setup = eth_tx_queue_setup,
+ .rx_queue_start = eth_rx_queue_start,
+ .tx_queue_start = eth_tx_queue_start,
+ .rx_queue_stop = eth_rx_queue_stop,
+ .tx_queue_stop = eth_tx_queue_stop,
+ .rx_queue_release = eth_queue_release,
+ .tx_queue_release = eth_queue_release,
+ .link_update = eth_link_update,
+ .stats_get = eth_stats_get,
+ .stats_reset = eth_stats_reset,
+};
+
+static int
+add_queue(struct pmd_devargs *pmd, const char *name, const char *type,
+ pcap_t *pcap, pcap_dumper_t *dumper)
+{
+ if (pmd->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES)
+ return -1;
+ if (pcap)
+ pmd->queue[pmd->num_of_queue].pcap = pcap;
+ if (dumper)
+ pmd->queue[pmd->num_of_queue].dumper = dumper;
+ pmd->queue[pmd->num_of_queue].name = name;
+ pmd->queue[pmd->num_of_queue].type = type;
+ pmd->num_of_queue++;
+ return 0;
+}
+
+/*
+ * Function handler that opens the pcap file for reading a stores a
+ * reference of it for use it later on.
+ */
+static int
+open_rx_pcap(const char *key, const char *value, void *extra_args)
+{
+ const char *pcap_filename = value;
+ struct pmd_devargs *rx = extra_args;
+ pcap_t *pcap = NULL;
+
+ if (open_single_rx_pcap(pcap_filename, &pcap) < 0)
+ return -1;
+
+ if (add_queue(rx, pcap_filename, key, pcap, NULL) < 0) {
+ pcap_close(pcap);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Opens a pcap file for writing and stores a reference to it
+ * for use it later on.
+ */
+static int
+open_tx_pcap(const char *key, const char *value, void *extra_args)
+{
+ const char *pcap_filename = value;
+ struct pmd_devargs *dumpers = extra_args;
+ pcap_dumper_t *dumper;
+
+ if (open_single_tx_pcap(pcap_filename, &dumper) < 0)
+ return -1;
+
+ if (add_queue(dumpers, pcap_filename, key, NULL, dumper) < 0) {
+ pcap_dump_close(dumper);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Opens an interface for reading and writing
+ */
+static inline int
+open_rx_tx_iface(const char *key, const char *value, void *extra_args)
+{
+ const char *iface = value;
+ struct pmd_devargs *tx = extra_args;
+ pcap_t *pcap = NULL;
+
+ if (open_single_iface(iface, &pcap) < 0)
+ return -1;
+
+ tx->queue[0].pcap = pcap;
+ tx->queue[0].name = iface;
+ tx->queue[0].type = key;
+
+ return 0;
+}
+
+static inline int
+set_iface_direction(const char *iface, pcap_t *pcap,
+ pcap_direction_t direction)
+{
+ const char *direction_str = (direction == PCAP_D_IN) ? "IN" : "OUT";
+ if (pcap_setdirection(pcap, direction) < 0) {
+ PMD_LOG(ERR, "Setting %s pcap direction %s failed - %s\n",
+ iface, direction_str, pcap_geterr(pcap));
+ return -1;
+ }
+ PMD_LOG(INFO, "Setting %s pcap direction %s\n",
+ iface, direction_str);
+ return 0;
+}
+
+static inline int
+open_iface(const char *key, const char *value, void *extra_args)
+{
+ const char *iface = value;
+ struct pmd_devargs *pmd = extra_args;
+ pcap_t *pcap = NULL;
+
+ if (open_single_iface(iface, &pcap) < 0)
+ return -1;
+ if (add_queue(pmd, iface, key, pcap, NULL) < 0) {
+ pcap_close(pcap);
+ return -1;
+ }
+
+ return 0;
+}
+
+/*
+ * Opens a NIC for reading packets from it
+ */
+static inline int
+open_rx_iface(const char *key, const char *value, void *extra_args)
+{
+ int ret = open_iface(key, value, extra_args);
+ if (ret < 0)
+ return ret;
+ if (strcmp(key, ETH_PCAP_RX_IFACE_IN_ARG) == 0) {
+ struct pmd_devargs *pmd = extra_args;
+ unsigned int qid = pmd->num_of_queue - 1;
+
+ set_iface_direction(pmd->queue[qid].name,
+ pmd->queue[qid].pcap,
+ PCAP_D_IN);
+ }
+
+ return 0;
+}
+
+static inline int
+rx_iface_args_process(const char *key, const char *value, void *extra_args)
+{
+ if (strcmp(key, ETH_PCAP_RX_IFACE_ARG) == 0 ||
+ strcmp(key, ETH_PCAP_RX_IFACE_IN_ARG) == 0)
+ return open_rx_iface(key, value, extra_args);
+
+ return 0;
+}
+
+/*
+ * Opens a NIC for writing packets to it
+ */
+static int
+open_tx_iface(const char *key, const char *value, void *extra_args)
+{
+ return open_iface(key, value, extra_args);
+}
+
+static int
+select_phy_mac(const char *key __rte_unused, const char *value,
+ void *extra_args)
+{
+ if (extra_args) {
+ const int phy_mac = atoi(value);
+ int *enable_phy_mac = extra_args;
+
+ if (phy_mac)
+ *enable_phy_mac = 1;
+ }
+ return 0;
+}
+
+static int
+get_infinite_rx_arg(const char *key __rte_unused,
+ const char *value, void *extra_args)
+{
+ if (extra_args) {
+ const int infinite_rx = atoi(value);
+ int *enable_infinite_rx = extra_args;
+
+ if (infinite_rx > 0)
+ *enable_infinite_rx = 1;
+ }
+ return 0;
+}
+
+static int
+pmd_init_internals(struct rte_vdev_device *vdev,
+ const unsigned int nb_rx_queues,
+ const unsigned int nb_tx_queues,
+ struct pmd_internals **internals,
+ struct rte_eth_dev **eth_dev)
+{
+ struct rte_eth_dev_data *data;
+ struct pmd_process_private *pp;
+ unsigned int numa_node = vdev->device.numa_node;
+
+ PMD_LOG(INFO, "Creating pcap-backed ethdev on numa socket %d",
+ numa_node);
+
+ pp = (struct pmd_process_private *)
+ rte_zmalloc(NULL, sizeof(struct pmd_process_private),
+ RTE_CACHE_LINE_SIZE);
+
+ if (pp == NULL) {
+ PMD_LOG(ERR,
+ "Failed to allocate memory for process private");
+ return -1;
+ }
+
+ /* reserve an ethdev entry */
+ *eth_dev = rte_eth_vdev_allocate(vdev, sizeof(**internals));
+ if (!(*eth_dev)) {
+ rte_free(pp);
+ return -1;
+ }
+ (*eth_dev)->process_private = pp;
+ /* now put it all together
+ * - store queue data in internals,
+ * - store numa_node info in eth_dev
+ * - point eth_dev_data to internals
+ * - and point eth_dev structure to new eth_dev_data structure
+ */
+ *internals = (*eth_dev)->data->dev_private;
+ /*
+ * Interface MAC = 02:70:63:61:70:<iface_idx>
+ * derived from: 'locally administered':'p':'c':'a':'p':'iface_idx'
+ * where the middle 4 characters are converted to hex.
+ */
+ (*internals)->eth_addr = (struct rte_ether_addr) {
+ .addr_bytes = { 0x02, 0x70, 0x63, 0x61, 0x70, iface_idx++ }
+ };
+ (*internals)->phy_mac = 0;
+ data = (*eth_dev)->data;
+ data->nb_rx_queues = (uint16_t)nb_rx_queues;
+ data->nb_tx_queues = (uint16_t)nb_tx_queues;
+ data->dev_link = pmd_link;
+ data->mac_addrs = &(*internals)->eth_addr;
+ data->promiscuous = 1;
+ data->all_multicast = 1;
+ data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
+
+ /*
+ * NOTE: we'll replace the data element, of originally allocated
+ * eth_dev so the rings are local per-process
+ */
+ (*eth_dev)->dev_ops = &ops;
+
+ strlcpy((*internals)->devargs, rte_vdev_device_args(vdev),
+ ETH_PCAP_ARG_MAXLEN);
+
+ return 0;
+}
+
+static int
+eth_pcap_update_mac(const char *if_name, struct rte_eth_dev *eth_dev,
+ const unsigned int numa_node)
+{
+ void *mac_addrs;
+ struct rte_ether_addr mac;
+
+ if (osdep_iface_mac_get(if_name, &mac) < 0)
+ return -1;
+
+ mac_addrs = rte_zmalloc_socket(NULL, RTE_ETHER_ADDR_LEN, 0, numa_node);
+ if (mac_addrs == NULL)
+ return -1;
+
+ PMD_LOG(INFO, "Setting phy MAC for %s", if_name);
+ rte_memcpy(mac_addrs, mac.addr_bytes, RTE_ETHER_ADDR_LEN);
+ eth_dev->data->mac_addrs = mac_addrs;
+ return 0;
+}
+
+static int
+eth_from_pcaps_common(struct rte_vdev_device *vdev,
+ struct pmd_devargs_all *devargs_all,
+ struct pmd_internals **internals, struct rte_eth_dev **eth_dev)
+{
+ struct pmd_process_private *pp;
+ struct pmd_devargs *rx_queues = &devargs_all->rx_queues;
+ struct pmd_devargs *tx_queues = &devargs_all->tx_queues;
+ const unsigned int nb_rx_queues = rx_queues->num_of_queue;
+ const unsigned int nb_tx_queues = tx_queues->num_of_queue;
+ unsigned int i;
+
+ if (pmd_init_internals(vdev, nb_rx_queues, nb_tx_queues, internals,
+ eth_dev) < 0)
+ return -1;
+
+ pp = (*eth_dev)->process_private;
+ for (i = 0; i < nb_rx_queues; i++) {
+ struct pcap_rx_queue *rx = &(*internals)->rx_queue[i];
+ struct devargs_queue *queue = &rx_queues->queue[i];
+
+ pp->rx_pcap[i] = queue->pcap;
+ strlcpy(rx->name, queue->name, sizeof(rx->name));
+ strlcpy(rx->type, queue->type, sizeof(rx->type));
+ }
+
+ for (i = 0; i < nb_tx_queues; i++) {
+ struct pcap_tx_queue *tx = &(*internals)->tx_queue[i];
+ struct devargs_queue *queue = &tx_queues->queue[i];
+
+ pp->tx_dumper[i] = queue->dumper;
+ pp->tx_pcap[i] = queue->pcap;
+ strlcpy(tx->name, queue->name, sizeof(tx->name));
+ strlcpy(tx->type, queue->type, sizeof(tx->type));
+ }
+
+ return 0;
+}
+
+static int
+eth_from_pcaps(struct rte_vdev_device *vdev,
+ struct pmd_devargs_all *devargs_all)
+{
+ struct pmd_internals *internals = NULL;
+ struct rte_eth_dev *eth_dev = NULL;
+ struct pmd_devargs *rx_queues = &devargs_all->rx_queues;
+ int single_iface = devargs_all->single_iface;
+ unsigned int infinite_rx = devargs_all->infinite_rx;
+ int ret;
+
+ ret = eth_from_pcaps_common(vdev, devargs_all, &internals, ð_dev);
+
+ if (ret < 0)
+ return ret;
+
+ /* store weather we are using a single interface for rx/tx or not */
+ internals->single_iface = single_iface;
+
+ if (single_iface) {
+ internals->if_index =
+ osdep_iface_index_get(rx_queues->queue[0].name);
+
+ /* phy_mac arg is applied only only if "iface" devarg is provided */
+ if (rx_queues->phy_mac) {
+ if (eth_pcap_update_mac(rx_queues->queue[0].name,
+ eth_dev, vdev->device.numa_node) == 0)
+ internals->phy_mac = 1;
+ }
+ }
+
+ internals->infinite_rx = infinite_rx;
+ /* Assign rx ops. */
+ if (infinite_rx)
+ eth_dev->rx_pkt_burst = eth_pcap_rx_infinite;
+ else if (devargs_all->is_rx_pcap || devargs_all->is_rx_iface ||
+ single_iface)
+ eth_dev->rx_pkt_burst = eth_pcap_rx;
+ else
+ eth_dev->rx_pkt_burst = eth_null_rx;
+
+ /* Assign tx ops. */
+ if (devargs_all->is_tx_pcap)
+ eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
+ else if (devargs_all->is_tx_iface || single_iface)
+ eth_dev->tx_pkt_burst = eth_pcap_tx;
+ else
+ eth_dev->tx_pkt_burst = eth_tx_drop;
+
+ rte_eth_dev_probing_finish(eth_dev);
+ return 0;
+}
+
+static int
+pmd_pcap_probe(struct rte_vdev_device *dev)
+{
+ const char *name;
+ struct rte_kvargs *kvlist;
+ struct pmd_devargs pcaps = {0};
+ struct pmd_devargs dumpers = {0};
+ struct rte_eth_dev *eth_dev = NULL;
+ struct pmd_internals *internal;
+ int ret = 0;
+
+ struct pmd_devargs_all devargs_all = {
+ .single_iface = 0,
+ .is_tx_pcap = 0,
+ .is_tx_iface = 0,
+ .infinite_rx = 0,
+ };
+
+ name = rte_vdev_device_name(dev);
+ PMD_LOG(INFO, "Initializing pmd_pcap for %s", name);
+
+ timespec_get(&start_time, TIME_UTC);
+ start_cycles = rte_get_timer_cycles();
+ hz = rte_get_timer_hz();
+
+ ret = rte_mbuf_dyn_rx_timestamp_register(×tamp_dynfield_offset,
+ ×tamp_rx_dynflag);
+ if (ret != 0) {
+ PMD_LOG(ERR, "Failed to register Rx timestamp field/flag");
+ return -1;
+ }
+
+ if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+ eth_dev = rte_eth_dev_attach_secondary(name);
+ if (!eth_dev) {
+ PMD_LOG(ERR, "Failed to probe %s", name);
+ return -1;
+ }
+
+ internal = eth_dev->data->dev_private;
+
+ kvlist = rte_kvargs_parse(internal->devargs, valid_arguments);
+ if (kvlist == NULL)
+ return -1;
+ } else {
+ kvlist = rte_kvargs_parse(rte_vdev_device_args(dev),
+ valid_arguments);
+ if (kvlist == NULL)
+ return -1;
+ }
+
+ /*
+ * If iface argument is passed we open the NICs and use them for
+ * reading / writing
+ */
+ if (rte_kvargs_count(kvlist, ETH_PCAP_IFACE_ARG) == 1) {
+
+ ret = rte_kvargs_process(kvlist, ETH_PCAP_IFACE_ARG,
+ &open_rx_tx_iface, &pcaps);
+ if (ret < 0)
+ goto free_kvlist;
+
+ dumpers.queue[0] = pcaps.queue[0];
+
+ ret = rte_kvargs_process(kvlist, ETH_PCAP_PHY_MAC_ARG,
+ &select_phy_mac, &pcaps.phy_mac);
+ if (ret < 0)
+ goto free_kvlist;
+
+ dumpers.phy_mac = pcaps.phy_mac;
+
+ devargs_all.single_iface = 1;
+ pcaps.num_of_queue = 1;
+ dumpers.num_of_queue = 1;
+
+ goto create_eth;
+ }
+
+ /*
+ * We check whether we want to open a RX stream from a real NIC, a
+ * pcap file or open a dummy RX stream
+ */
+ devargs_all.is_rx_pcap =
+ rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG) ? 1 : 0;
+ devargs_all.is_rx_iface =
+ (rte_kvargs_count(kvlist, ETH_PCAP_RX_IFACE_ARG) +
+ rte_kvargs_count(kvlist, ETH_PCAP_RX_IFACE_IN_ARG)) ? 1 : 0;
+ pcaps.num_of_queue = 0;
+
+ devargs_all.is_tx_pcap =
+ rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG) ? 1 : 0;
+ devargs_all.is_tx_iface =
+ rte_kvargs_count(kvlist, ETH_PCAP_TX_IFACE_ARG) ? 1 : 0;
+ dumpers.num_of_queue = 0;
+
+ if (devargs_all.is_rx_pcap) {
+ /*
+ * We check whether we want to infinitely rx the pcap file.
+ */
+ unsigned int infinite_rx_arg_cnt = rte_kvargs_count(kvlist,
+ ETH_PCAP_INFINITE_RX_ARG);
+
+ if (infinite_rx_arg_cnt == 1) {
+ ret = rte_kvargs_process(kvlist,
+ ETH_PCAP_INFINITE_RX_ARG,
+ &get_infinite_rx_arg,
+ &devargs_all.infinite_rx);
+ if (ret < 0)
+ goto free_kvlist;
+ PMD_LOG(INFO, "infinite_rx has been %s for %s",
+ devargs_all.infinite_rx ? "enabled" : "disabled",
+ name);
+
+ } else if (infinite_rx_arg_cnt > 1) {
+ PMD_LOG(WARNING, "infinite_rx has not been enabled since the "
+ "argument has been provided more than once "
+ "for %s", name);
+ }
+
+ ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_PCAP_ARG,
+ &open_rx_pcap, &pcaps);
+ } else if (devargs_all.is_rx_iface) {
+ ret = rte_kvargs_process(kvlist, NULL,
+ &rx_iface_args_process, &pcaps);
+ } else if (devargs_all.is_tx_iface || devargs_all.is_tx_pcap) {
+ unsigned int i;
+
+ /* Count number of tx queue args passed before dummy rx queue
+ * creation so a dummy rx queue can be created for each tx queue
+ */
+ unsigned int num_tx_queues =
+ (rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG) +
+ rte_kvargs_count(kvlist, ETH_PCAP_TX_IFACE_ARG));
+
+ PMD_LOG(INFO, "Creating null rx queue since no rx queues were provided.");
+
+ /* Creating a dummy rx queue for each tx queue passed */
+ for (i = 0; i < num_tx_queues; i++)
+ ret = add_queue(&pcaps, "dummy_rx", "rx_null", NULL,
+ NULL);
+ } else {
+ PMD_LOG(ERR, "Error - No rx or tx queues provided");
+ ret = -ENOENT;
+ }
+ if (ret < 0)
+ goto free_kvlist;
+
+ /*
+ * We check whether we want to open a TX stream to a real NIC,
+ * a pcap file, or drop packets on tx
+ */
+ if (devargs_all.is_tx_pcap) {
+ ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_PCAP_ARG,
+ &open_tx_pcap, &dumpers);
+ } else if (devargs_all.is_tx_iface) {
+ ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_IFACE_ARG,
+ &open_tx_iface, &dumpers);
+ } else {
+ unsigned int i;
+
+ PMD_LOG(INFO, "Dropping packets on tx since no tx queues were provided.");
+
+ /* Add 1 dummy queue per rxq which counts and drops packets. */
+ for (i = 0; i < pcaps.num_of_queue; i++)
+ ret = add_queue(&dumpers, "dummy_tx", "tx_drop", NULL,
+ NULL);
+ }
+
+ if (ret < 0)
+ goto free_kvlist;
+
+create_eth:
+ if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
+ struct pmd_process_private *pp;
+ unsigned int i;
+
+ internal = eth_dev->data->dev_private;
+ pp = (struct pmd_process_private *)
+ rte_zmalloc(NULL,
+ sizeof(struct pmd_process_private),
+ RTE_CACHE_LINE_SIZE);
+
+ if (pp == NULL) {
+ PMD_LOG(ERR,
+ "Failed to allocate memory for process private");
+ ret = -1;
+ goto free_kvlist;
+ }
+
+ eth_dev->dev_ops = &ops;
+ eth_dev->device = &dev->device;
+
+ /* setup process private */
+ for (i = 0; i < pcaps.num_of_queue; i++)
+ pp->rx_pcap[i] = pcaps.queue[i].pcap;
+
+ for (i = 0; i < dumpers.num_of_queue; i++) {
+ pp->tx_dumper[i] = dumpers.queue[i].dumper;
+ pp->tx_pcap[i] = dumpers.queue[i].pcap;
+ }
+
+ eth_dev->process_private = pp;
+ eth_dev->rx_pkt_burst = eth_pcap_rx;
+ if (devargs_all.is_tx_pcap)
+ eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
+ else
+ eth_dev->tx_pkt_burst = eth_pcap_tx;
+
+ rte_eth_dev_probing_finish(eth_dev);
+ goto free_kvlist;
+ }
+
+ devargs_all.rx_queues = pcaps;
+ devargs_all.tx_queues = dumpers;
+
+ ret = eth_from_pcaps(dev, &devargs_all);
+
+free_kvlist:
+ rte_kvargs_free(kvlist);
+
+ return ret;
+}
+
+static int
+pmd_pcap_remove(struct rte_vdev_device *dev)
+{
+ struct rte_eth_dev *eth_dev = NULL;
+
+ if (!dev)
+ return -1;
+
+ eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
+ if (eth_dev == NULL)
+ return 0; /* port already released */
+
+ eth_dev_close(eth_dev);
+ rte_eth_dev_release_port(eth_dev);
+
+ return 0;
+}
+
+static struct rte_vdev_driver pmd_pcap_drv = {
+ .probe = pmd_pcap_probe,
+ .remove = pmd_pcap_remove,
+};
+
+RTE_PMD_REGISTER_VDEV(net_pcap, pmd_pcap_drv);
+RTE_PMD_REGISTER_ALIAS(net_pcap, eth_pcap);
+RTE_PMD_REGISTER_PARAM_STRING(net_pcap,
+ ETH_PCAP_RX_PCAP_ARG "=<string> "
+ ETH_PCAP_TX_PCAP_ARG "=<string> "
+ ETH_PCAP_RX_IFACE_ARG "=<ifc> "
+ ETH_PCAP_RX_IFACE_IN_ARG "=<ifc> "
+ ETH_PCAP_TX_IFACE_ARG "=<ifc> "
+ ETH_PCAP_IFACE_ARG "=<ifc> "
+ ETH_PCAP_PHY_MAC_ARG "=<int>"
+ ETH_PCAP_INFINITE_RX_ARG "=<0|1>");
--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright (c) 2021 Dmitry Kozlyuk
+ */
+
+#ifndef _RTE_PCAP_OSDEP_
+#define _RTE_PCAP_OSDEP_
+
+#include <rte_ether.h>
+
+int osdep_iface_index_get(const char *name);
+int osdep_iface_mac_get(const char *name, struct rte_ether_addr *mac);
+
+#endif
--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2016 Intel Corporation.
+ * Copyright(c) 2014 6WIND S.A.
+ * All rights reserved.
+ */
+
+#include <net/if.h>
+#include <net/if_dl.h>
+#include <sys/sysctl.h>
+
+#include <rte_malloc.h>
+#include <rte_memcpy.h>
+
+#include "pcap_osdep.h"
+
+int
+osdep_iface_index_get(const char *name)
+{
+ return if_nametoindex(name);
+}
+
+int
+osdep_iface_mac_get(const char *if_name, struct rte_ether_addr *mac)
+{
+ struct if_msghdr *ifm;
+ struct sockaddr_dl *sdl;
+ int mib[6];
+ size_t len = 0;
+ char *buf;
+
+ mib[0] = CTL_NET;
+ mib[1] = AF_ROUTE;
+ mib[2] = 0;
+ mib[3] = AF_LINK;
+ mib[4] = NET_RT_IFLIST;
+ mib[5] = if_nametoindex(if_name);
+
+ if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0)
+ return -1;
+
+ if (len == 0)
+ return -1;
+
+ buf = rte_malloc(NULL, len, 0);
+ if (!buf)
+ return -1;
+
+ if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
+ rte_free(buf);
+ return -1;
+ }
+ ifm = (struct if_msghdr *)buf;
+ sdl = (struct sockaddr_dl *)(ifm + 1);
+
+ rte_memcpy(mac->addr_bytes, LLADDR(sdl), RTE_ETHER_ADDR_LEN);
+
+ rte_free(buf);
+ return 0;
+}
--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2016 Intel Corporation.
+ * Copyright(c) 2014 6WIND S.A.
+ * All rights reserved.
+ */
+
+#include <net/if.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+#include <unistd.h>
+
+#include <rte_memcpy.h>
+#include <rte_string_fns.h>
+
+#include "pcap_osdep.h"
+
+int
+osdep_iface_index_get(const char *name)
+{
+ return if_nametoindex(name);
+}
+
+int
+osdep_iface_mac_get(const char *if_name, struct rte_ether_addr *mac)
+{
+ struct ifreq ifr;
+ int if_fd = socket(AF_INET, SOCK_DGRAM, 0);
+
+ if (if_fd == -1)
+ return -1;
+
+ rte_strscpy(ifr.ifr_name, if_name, sizeof(ifr.ifr_name));
+ if (ioctl(if_fd, SIOCGIFHWADDR, &ifr)) {
+ close(if_fd);
+ return -1;
+ }
+
+ rte_memcpy(mac->addr_bytes, ifr.ifr_hwaddr.sa_data, RTE_ETHER_ADDR_LEN);
+
+ close(if_fd);
+ return 0;
+}
+++ /dev/null
-/* SPDX-License-Identifier: BSD-3-Clause
- * Copyright(c) 2010-2016 Intel Corporation.
- * Copyright(c) 2014 6WIND S.A.
- * All rights reserved.
- */
-
-#include <time.h>
-
-#include <net/if.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <unistd.h>
-
-#if defined(RTE_EXEC_ENV_FREEBSD)
-#include <sys/sysctl.h>
-#include <net/if_dl.h>
-#endif
-
-#include <pcap.h>
-
-#include <rte_cycles.h>
-#include <ethdev_driver.h>
-#include <ethdev_vdev.h>
-#include <rte_kvargs.h>
-#include <rte_malloc.h>
-#include <rte_mbuf.h>
-#include <rte_mbuf_dyn.h>
-#include <rte_bus_vdev.h>
-#include <rte_string_fns.h>
-
-#define RTE_ETH_PCAP_SNAPSHOT_LEN 65535
-#define RTE_ETH_PCAP_SNAPLEN RTE_ETHER_MAX_JUMBO_FRAME_LEN
-#define RTE_ETH_PCAP_PROMISC 1
-#define RTE_ETH_PCAP_TIMEOUT -1
-
-#define ETH_PCAP_RX_PCAP_ARG "rx_pcap"
-#define ETH_PCAP_TX_PCAP_ARG "tx_pcap"
-#define ETH_PCAP_RX_IFACE_ARG "rx_iface"
-#define ETH_PCAP_RX_IFACE_IN_ARG "rx_iface_in"
-#define ETH_PCAP_TX_IFACE_ARG "tx_iface"
-#define ETH_PCAP_IFACE_ARG "iface"
-#define ETH_PCAP_PHY_MAC_ARG "phy_mac"
-#define ETH_PCAP_INFINITE_RX_ARG "infinite_rx"
-
-#define ETH_PCAP_ARG_MAXLEN 64
-
-#define RTE_PMD_PCAP_MAX_QUEUES 16
-
-static char errbuf[PCAP_ERRBUF_SIZE];
-static struct timeval start_time;
-static uint64_t start_cycles;
-static uint64_t hz;
-static uint8_t iface_idx;
-
-static uint64_t timestamp_rx_dynflag;
-static int timestamp_dynfield_offset = -1;
-
-struct queue_stat {
- volatile unsigned long pkts;
- volatile unsigned long bytes;
- volatile unsigned long err_pkts;
-};
-
-struct queue_missed_stat {
- /* last value retrieved from pcap */
- unsigned int pcap;
- /* stores values lost by pcap stop or rollover */
- unsigned long mnemonic;
- /* value on last reset */
- unsigned long reset;
-};
-
-struct pcap_rx_queue {
- uint16_t port_id;
- uint16_t queue_id;
- struct rte_mempool *mb_pool;
- struct queue_stat rx_stat;
- struct queue_missed_stat missed_stat;
- char name[PATH_MAX];
- char type[ETH_PCAP_ARG_MAXLEN];
-
- /* Contains pre-generated packets to be looped through */
- struct rte_ring *pkts;
-};
-
-struct pcap_tx_queue {
- uint16_t port_id;
- uint16_t queue_id;
- struct queue_stat tx_stat;
- char name[PATH_MAX];
- char type[ETH_PCAP_ARG_MAXLEN];
-};
-
-struct pmd_internals {
- struct pcap_rx_queue rx_queue[RTE_PMD_PCAP_MAX_QUEUES];
- struct pcap_tx_queue tx_queue[RTE_PMD_PCAP_MAX_QUEUES];
- char devargs[ETH_PCAP_ARG_MAXLEN];
- struct rte_ether_addr eth_addr;
- int if_index;
- int single_iface;
- int phy_mac;
- unsigned int infinite_rx;
-};
-
-struct pmd_process_private {
- pcap_t *rx_pcap[RTE_PMD_PCAP_MAX_QUEUES];
- pcap_t *tx_pcap[RTE_PMD_PCAP_MAX_QUEUES];
- pcap_dumper_t *tx_dumper[RTE_PMD_PCAP_MAX_QUEUES];
-};
-
-struct pmd_devargs {
- unsigned int num_of_queue;
- struct devargs_queue {
- pcap_dumper_t *dumper;
- pcap_t *pcap;
- const char *name;
- const char *type;
- } queue[RTE_PMD_PCAP_MAX_QUEUES];
- int phy_mac;
-};
-
-struct pmd_devargs_all {
- struct pmd_devargs rx_queues;
- struct pmd_devargs tx_queues;
- int single_iface;
- unsigned int is_tx_pcap;
- unsigned int is_tx_iface;
- unsigned int is_rx_pcap;
- unsigned int is_rx_iface;
- unsigned int infinite_rx;
-};
-
-static const char *valid_arguments[] = {
- ETH_PCAP_RX_PCAP_ARG,
- ETH_PCAP_TX_PCAP_ARG,
- ETH_PCAP_RX_IFACE_ARG,
- ETH_PCAP_RX_IFACE_IN_ARG,
- ETH_PCAP_TX_IFACE_ARG,
- ETH_PCAP_IFACE_ARG,
- ETH_PCAP_PHY_MAC_ARG,
- ETH_PCAP_INFINITE_RX_ARG,
- NULL
-};
-
-static struct rte_eth_link pmd_link = {
- .link_speed = ETH_SPEED_NUM_10G,
- .link_duplex = ETH_LINK_FULL_DUPLEX,
- .link_status = ETH_LINK_DOWN,
- .link_autoneg = ETH_LINK_FIXED,
-};
-
-RTE_LOG_REGISTER(eth_pcap_logtype, pmd.net.pcap, NOTICE);
-
-#define PMD_LOG(level, fmt, args...) \
- rte_log(RTE_LOG_ ## level, eth_pcap_logtype, \
- "%s(): " fmt "\n", __func__, ##args)
-
-static struct queue_missed_stat*
-queue_missed_stat_update(struct rte_eth_dev *dev, unsigned int qid)
-{
- struct pmd_internals *internals = dev->data->dev_private;
- struct queue_missed_stat *missed_stat =
- &internals->rx_queue[qid].missed_stat;
- const struct pmd_process_private *pp = dev->process_private;
- pcap_t *pcap = pp->rx_pcap[qid];
- struct pcap_stat stat;
-
- if (!pcap || (pcap_stats(pcap, &stat) != 0))
- return missed_stat;
-
- /* rollover check - best effort fixup assuming single rollover */
- if (stat.ps_drop < missed_stat->pcap)
- missed_stat->mnemonic += UINT_MAX;
- missed_stat->pcap = stat.ps_drop;
-
- return missed_stat;
-}
-
-static void
-queue_missed_stat_on_stop_update(struct rte_eth_dev *dev, unsigned int qid)
-{
- struct queue_missed_stat *missed_stat =
- queue_missed_stat_update(dev, qid);
-
- missed_stat->mnemonic += missed_stat->pcap;
- missed_stat->pcap = 0;
-}
-
-static void
-queue_missed_stat_reset(struct rte_eth_dev *dev, unsigned int qid)
-{
- struct queue_missed_stat *missed_stat =
- queue_missed_stat_update(dev, qid);
-
- missed_stat->reset = missed_stat->pcap;
- missed_stat->mnemonic = 0;
-}
-
-static unsigned long
-queue_missed_stat_get(struct rte_eth_dev *dev, unsigned int qid)
-{
- const struct queue_missed_stat *missed_stat =
- queue_missed_stat_update(dev, qid);
-
- return missed_stat->pcap + missed_stat->mnemonic - missed_stat->reset;
-}
-
-static int
-eth_pcap_rx_jumbo(struct rte_mempool *mb_pool, struct rte_mbuf *mbuf,
- const u_char *data, uint16_t data_len)
-{
- /* Copy the first segment. */
- uint16_t len = rte_pktmbuf_tailroom(mbuf);
- struct rte_mbuf *m = mbuf;
-
- rte_memcpy(rte_pktmbuf_append(mbuf, len), data, len);
- data_len -= len;
- data += len;
-
- while (data_len > 0) {
- /* Allocate next mbuf and point to that. */
- m->next = rte_pktmbuf_alloc(mb_pool);
-
- if (unlikely(!m->next))
- return -1;
-
- m = m->next;
-
- /* Headroom is not needed in chained mbufs. */
- rte_pktmbuf_prepend(m, rte_pktmbuf_headroom(m));
- m->pkt_len = 0;
- m->data_len = 0;
-
- /* Copy next segment. */
- len = RTE_MIN(rte_pktmbuf_tailroom(m), data_len);
- rte_memcpy(rte_pktmbuf_append(m, len), data, len);
-
- mbuf->nb_segs++;
- data_len -= len;
- data += len;
- }
-
- return mbuf->nb_segs;
-}
-
-static uint16_t
-eth_pcap_rx_infinite(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
-{
- int i;
- struct pcap_rx_queue *pcap_q = queue;
- uint32_t rx_bytes = 0;
-
- if (unlikely(nb_pkts == 0))
- return 0;
-
- if (rte_pktmbuf_alloc_bulk(pcap_q->mb_pool, bufs, nb_pkts) != 0)
- return 0;
-
- for (i = 0; i < nb_pkts; i++) {
- struct rte_mbuf *pcap_buf;
- int err = rte_ring_dequeue(pcap_q->pkts, (void **)&pcap_buf);
- if (err)
- return i;
-
- rte_memcpy(rte_pktmbuf_mtod(bufs[i], void *),
- rte_pktmbuf_mtod(pcap_buf, void *),
- pcap_buf->data_len);
- bufs[i]->data_len = pcap_buf->data_len;
- bufs[i]->pkt_len = pcap_buf->pkt_len;
- bufs[i]->port = pcap_q->port_id;
- rx_bytes += pcap_buf->data_len;
-
- /* Enqueue packet back on ring to allow infinite rx. */
- rte_ring_enqueue(pcap_q->pkts, pcap_buf);
- }
-
- pcap_q->rx_stat.pkts += i;
- pcap_q->rx_stat.bytes += rx_bytes;
-
- return i;
-}
-
-static uint16_t
-eth_pcap_rx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
-{
- unsigned int i;
- struct pcap_pkthdr header;
- struct pmd_process_private *pp;
- const u_char *packet;
- struct rte_mbuf *mbuf;
- struct pcap_rx_queue *pcap_q = queue;
- uint16_t num_rx = 0;
- uint32_t rx_bytes = 0;
- pcap_t *pcap;
-
- pp = rte_eth_devices[pcap_q->port_id].process_private;
- pcap = pp->rx_pcap[pcap_q->queue_id];
-
- if (unlikely(pcap == NULL || nb_pkts == 0))
- return 0;
-
- /* Reads the given number of packets from the pcap file one by one
- * and copies the packet data into a newly allocated mbuf to return.
- */
- for (i = 0; i < nb_pkts; i++) {
- /* Get the next PCAP packet */
- packet = pcap_next(pcap, &header);
- if (unlikely(packet == NULL))
- break;
-
- mbuf = rte_pktmbuf_alloc(pcap_q->mb_pool);
- if (unlikely(mbuf == NULL))
- break;
-
- if (header.caplen <= rte_pktmbuf_tailroom(mbuf)) {
- /* pcap packet will fit in the mbuf, can copy it */
- rte_memcpy(rte_pktmbuf_mtod(mbuf, void *), packet,
- header.caplen);
- mbuf->data_len = (uint16_t)header.caplen;
- } else {
- /* Try read jumbo frame into multi mbufs. */
- if (unlikely(eth_pcap_rx_jumbo(pcap_q->mb_pool,
- mbuf,
- packet,
- header.caplen) == -1)) {
- rte_pktmbuf_free(mbuf);
- break;
- }
- }
-
- mbuf->pkt_len = (uint16_t)header.caplen;
- *RTE_MBUF_DYNFIELD(mbuf, timestamp_dynfield_offset,
- rte_mbuf_timestamp_t *) =
- (uint64_t)header.ts.tv_sec * 1000000 +
- header.ts.tv_usec;
- mbuf->ol_flags |= timestamp_rx_dynflag;
- mbuf->port = pcap_q->port_id;
- bufs[num_rx] = mbuf;
- num_rx++;
- rx_bytes += header.caplen;
- }
- pcap_q->rx_stat.pkts += num_rx;
- pcap_q->rx_stat.bytes += rx_bytes;
-
- return num_rx;
-}
-
-static uint16_t
-eth_null_rx(void *queue __rte_unused,
- struct rte_mbuf **bufs __rte_unused,
- uint16_t nb_pkts __rte_unused)
-{
- return 0;
-}
-
-#define NSEC_PER_SEC 1000000000L
-
-static inline void
-calculate_timestamp(struct timeval *ts) {
- uint64_t cycles;
- struct timeval cur_time;
-
- cycles = rte_get_timer_cycles() - start_cycles;
- cur_time.tv_sec = cycles / hz;
- cur_time.tv_usec = (cycles % hz) * NSEC_PER_SEC / hz;
-
- ts->tv_sec = start_time.tv_sec + cur_time.tv_sec;
- ts->tv_usec = start_time.tv_usec + cur_time.tv_usec;
- if (ts->tv_usec >= NSEC_PER_SEC) {
- ts->tv_usec -= NSEC_PER_SEC;
- ts->tv_sec += 1;
- }
-}
-
-/*
- * Callback to handle writing packets to a pcap file.
- */
-static uint16_t
-eth_pcap_tx_dumper(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
-{
- unsigned int i;
- struct rte_mbuf *mbuf;
- struct pmd_process_private *pp;
- struct pcap_tx_queue *dumper_q = queue;
- uint16_t num_tx = 0;
- uint32_t tx_bytes = 0;
- struct pcap_pkthdr header;
- pcap_dumper_t *dumper;
- unsigned char temp_data[RTE_ETH_PCAP_SNAPLEN];
- size_t len, caplen;
-
- pp = rte_eth_devices[dumper_q->port_id].process_private;
- dumper = pp->tx_dumper[dumper_q->queue_id];
-
- if (dumper == NULL || nb_pkts == 0)
- return 0;
-
- /* writes the nb_pkts packets to the previously opened pcap file
- * dumper */
- for (i = 0; i < nb_pkts; i++) {
- mbuf = bufs[i];
- len = caplen = rte_pktmbuf_pkt_len(mbuf);
- if (unlikely(!rte_pktmbuf_is_contiguous(mbuf) &&
- len > sizeof(temp_data))) {
- caplen = sizeof(temp_data);
- }
-
- calculate_timestamp(&header.ts);
- header.len = len;
- header.caplen = caplen;
- /* rte_pktmbuf_read() returns a pointer to the data directly
- * in the mbuf (when the mbuf is contiguous) or, otherwise,
- * a pointer to temp_data after copying into it.
- */
- pcap_dump((u_char *)dumper, &header,
- rte_pktmbuf_read(mbuf, 0, caplen, temp_data));
-
- num_tx++;
- tx_bytes += caplen;
- rte_pktmbuf_free(mbuf);
- }
-
- /*
- * Since there's no place to hook a callback when the forwarding
- * process stops and to make sure the pcap file is actually written,
- * we flush the pcap dumper within each burst.
- */
- pcap_dump_flush(dumper);
- dumper_q->tx_stat.pkts += num_tx;
- dumper_q->tx_stat.bytes += tx_bytes;
- dumper_q->tx_stat.err_pkts += nb_pkts - num_tx;
-
- return nb_pkts;
-}
-
-/*
- * Callback to handle dropping packets in the infinite rx case.
- */
-static uint16_t
-eth_tx_drop(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
-{
- unsigned int i;
- uint32_t tx_bytes = 0;
- struct pcap_tx_queue *tx_queue = queue;
-
- if (unlikely(nb_pkts == 0))
- return 0;
-
- for (i = 0; i < nb_pkts; i++) {
- tx_bytes += bufs[i]->pkt_len;
- rte_pktmbuf_free(bufs[i]);
- }
-
- tx_queue->tx_stat.pkts += nb_pkts;
- tx_queue->tx_stat.bytes += tx_bytes;
-
- return i;
-}
-
-/*
- * Callback to handle sending packets through a real NIC.
- */
-static uint16_t
-eth_pcap_tx(void *queue, struct rte_mbuf **bufs, uint16_t nb_pkts)
-{
- unsigned int i;
- int ret;
- struct rte_mbuf *mbuf;
- struct pmd_process_private *pp;
- struct pcap_tx_queue *tx_queue = queue;
- uint16_t num_tx = 0;
- uint32_t tx_bytes = 0;
- pcap_t *pcap;
- unsigned char temp_data[RTE_ETH_PCAP_SNAPLEN];
- size_t len;
-
- pp = rte_eth_devices[tx_queue->port_id].process_private;
- pcap = pp->tx_pcap[tx_queue->queue_id];
-
- if (unlikely(nb_pkts == 0 || pcap == NULL))
- return 0;
-
- for (i = 0; i < nb_pkts; i++) {
- mbuf = bufs[i];
- len = rte_pktmbuf_pkt_len(mbuf);
- if (unlikely(!rte_pktmbuf_is_contiguous(mbuf) &&
- len > sizeof(temp_data))) {
- PMD_LOG(ERR,
- "Dropping multi segment PCAP packet. Size (%zd) > max size (%zd).",
- len, sizeof(temp_data));
- rte_pktmbuf_free(mbuf);
- continue;
- }
-
- /* rte_pktmbuf_read() returns a pointer to the data directly
- * in the mbuf (when the mbuf is contiguous) or, otherwise,
- * a pointer to temp_data after copying into it.
- */
- ret = pcap_sendpacket(pcap,
- rte_pktmbuf_read(mbuf, 0, len, temp_data), len);
- if (unlikely(ret != 0))
- break;
- num_tx++;
- tx_bytes += len;
- rte_pktmbuf_free(mbuf);
- }
-
- tx_queue->tx_stat.pkts += num_tx;
- tx_queue->tx_stat.bytes += tx_bytes;
- tx_queue->tx_stat.err_pkts += i - num_tx;
-
- return i;
-}
-
-/*
- * pcap_open_live wrapper function
- */
-static inline int
-open_iface_live(const char *iface, pcap_t **pcap) {
- *pcap = pcap_open_live(iface, RTE_ETH_PCAP_SNAPLEN,
- RTE_ETH_PCAP_PROMISC, RTE_ETH_PCAP_TIMEOUT, errbuf);
-
- if (*pcap == NULL) {
- PMD_LOG(ERR, "Couldn't open %s: %s", iface, errbuf);
- return -1;
- }
-
- return 0;
-}
-
-static int
-open_single_iface(const char *iface, pcap_t **pcap)
-{
- if (open_iface_live(iface, pcap) < 0) {
- PMD_LOG(ERR, "Couldn't open interface %s", iface);
- return -1;
- }
-
- return 0;
-}
-
-static int
-open_single_tx_pcap(const char *pcap_filename, pcap_dumper_t **dumper)
-{
- pcap_t *tx_pcap;
-
- /*
- * We need to create a dummy empty pcap_t to use it
- * with pcap_dump_open(). We create big enough an Ethernet
- * pcap holder.
- */
- tx_pcap = pcap_open_dead_with_tstamp_precision(DLT_EN10MB,
- RTE_ETH_PCAP_SNAPSHOT_LEN, PCAP_TSTAMP_PRECISION_NANO);
- if (tx_pcap == NULL) {
- PMD_LOG(ERR, "Couldn't create dead pcap");
- return -1;
- }
-
- /* The dumper is created using the previous pcap_t reference */
- *dumper = pcap_dump_open(tx_pcap, pcap_filename);
- if (*dumper == NULL) {
- pcap_close(tx_pcap);
- PMD_LOG(ERR, "Couldn't open %s for writing.",
- pcap_filename);
- return -1;
- }
-
- pcap_close(tx_pcap);
- return 0;
-}
-
-static int
-open_single_rx_pcap(const char *pcap_filename, pcap_t **pcap)
-{
- *pcap = pcap_open_offline(pcap_filename, errbuf);
- if (*pcap == NULL) {
- PMD_LOG(ERR, "Couldn't open %s: %s", pcap_filename,
- errbuf);
- return -1;
- }
-
- return 0;
-}
-
-static uint64_t
-count_packets_in_pcap(pcap_t **pcap, struct pcap_rx_queue *pcap_q)
-{
- const u_char *packet;
- struct pcap_pkthdr header;
- uint64_t pcap_pkt_count = 0;
-
- while ((packet = pcap_next(*pcap, &header)))
- pcap_pkt_count++;
-
- /* The pcap is reopened so it can be used as normal later. */
- pcap_close(*pcap);
- *pcap = NULL;
- open_single_rx_pcap(pcap_q->name, pcap);
-
- return pcap_pkt_count;
-}
-
-static int
-eth_dev_start(struct rte_eth_dev *dev)
-{
- unsigned int i;
- struct pmd_internals *internals = dev->data->dev_private;
- struct pmd_process_private *pp = dev->process_private;
- struct pcap_tx_queue *tx;
- struct pcap_rx_queue *rx;
-
- /* Special iface case. Single pcap is open and shared between tx/rx. */
- if (internals->single_iface) {
- tx = &internals->tx_queue[0];
- rx = &internals->rx_queue[0];
-
- if (!pp->tx_pcap[0] &&
- strcmp(tx->type, ETH_PCAP_IFACE_ARG) == 0) {
- if (open_single_iface(tx->name, &pp->tx_pcap[0]) < 0)
- return -1;
- pp->rx_pcap[0] = pp->tx_pcap[0];
- }
-
- goto status_up;
- }
-
- /* If not open already, open tx pcaps/dumpers */
- for (i = 0; i < dev->data->nb_tx_queues; i++) {
- tx = &internals->tx_queue[i];
-
- if (!pp->tx_dumper[i] &&
- strcmp(tx->type, ETH_PCAP_TX_PCAP_ARG) == 0) {
- if (open_single_tx_pcap(tx->name,
- &pp->tx_dumper[i]) < 0)
- return -1;
- } else if (!pp->tx_pcap[i] &&
- strcmp(tx->type, ETH_PCAP_TX_IFACE_ARG) == 0) {
- if (open_single_iface(tx->name, &pp->tx_pcap[i]) < 0)
- return -1;
- }
- }
-
- /* If not open already, open rx pcaps */
- for (i = 0; i < dev->data->nb_rx_queues; i++) {
- rx = &internals->rx_queue[i];
-
- if (pp->rx_pcap[i] != NULL)
- continue;
-
- if (strcmp(rx->type, ETH_PCAP_RX_PCAP_ARG) == 0) {
- if (open_single_rx_pcap(rx->name, &pp->rx_pcap[i]) < 0)
- return -1;
- } else if (strcmp(rx->type, ETH_PCAP_RX_IFACE_ARG) == 0) {
- if (open_single_iface(rx->name, &pp->rx_pcap[i]) < 0)
- return -1;
- }
- }
-
-status_up:
- for (i = 0; i < dev->data->nb_rx_queues; i++)
- dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;
-
- for (i = 0; i < dev->data->nb_tx_queues; i++)
- dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;
-
- dev->data->dev_link.link_status = ETH_LINK_UP;
-
- return 0;
-}
-
-/*
- * This function gets called when the current port gets stopped.
- * Is the only place for us to close all the tx streams dumpers.
- * If not called the dumpers will be flushed within each tx burst.
- */
-static int
-eth_dev_stop(struct rte_eth_dev *dev)
-{
- unsigned int i;
- struct pmd_internals *internals = dev->data->dev_private;
- struct pmd_process_private *pp = dev->process_private;
-
- /* Special iface case. Single pcap is open and shared between tx/rx. */
- if (internals->single_iface) {
- queue_missed_stat_on_stop_update(dev, 0);
- if (pp->tx_pcap[0] != NULL) {
- pcap_close(pp->tx_pcap[0]);
- pp->tx_pcap[0] = NULL;
- pp->rx_pcap[0] = NULL;
- }
- goto status_down;
- }
-
- for (i = 0; i < dev->data->nb_tx_queues; i++) {
- if (pp->tx_dumper[i] != NULL) {
- pcap_dump_close(pp->tx_dumper[i]);
- pp->tx_dumper[i] = NULL;
- }
-
- if (pp->tx_pcap[i] != NULL) {
- pcap_close(pp->tx_pcap[i]);
- pp->tx_pcap[i] = NULL;
- }
- }
-
- for (i = 0; i < dev->data->nb_rx_queues; i++) {
- if (pp->rx_pcap[i] != NULL) {
- queue_missed_stat_on_stop_update(dev, i);
- pcap_close(pp->rx_pcap[i]);
- pp->rx_pcap[i] = NULL;
- }
- }
-
-status_down:
- for (i = 0; i < dev->data->nb_rx_queues; i++)
- dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
-
- for (i = 0; i < dev->data->nb_tx_queues; i++)
- dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
-
- dev->data->dev_link.link_status = ETH_LINK_DOWN;
-
- return 0;
-}
-
-static int
-eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
-{
- return 0;
-}
-
-static int
-eth_dev_info(struct rte_eth_dev *dev,
- struct rte_eth_dev_info *dev_info)
-{
- struct pmd_internals *internals = dev->data->dev_private;
-
- dev_info->if_index = internals->if_index;
- dev_info->max_mac_addrs = 1;
- dev_info->max_rx_pktlen = (uint32_t) -1;
- dev_info->max_rx_queues = dev->data->nb_rx_queues;
- dev_info->max_tx_queues = dev->data->nb_tx_queues;
- dev_info->min_rx_bufsize = 0;
-
- return 0;
-}
-
-static int
-eth_stats_get(struct rte_eth_dev *dev, struct rte_eth_stats *stats)
-{
- unsigned int i;
- unsigned long rx_packets_total = 0, rx_bytes_total = 0;
- unsigned long rx_missed_total = 0;
- unsigned long tx_packets_total = 0, tx_bytes_total = 0;
- unsigned long tx_packets_err_total = 0;
- const struct pmd_internals *internal = dev->data->dev_private;
-
- for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
- i < dev->data->nb_rx_queues; i++) {
- stats->q_ipackets[i] = internal->rx_queue[i].rx_stat.pkts;
- stats->q_ibytes[i] = internal->rx_queue[i].rx_stat.bytes;
- rx_packets_total += stats->q_ipackets[i];
- rx_bytes_total += stats->q_ibytes[i];
- rx_missed_total += queue_missed_stat_get(dev, i);
- }
-
- for (i = 0; i < RTE_ETHDEV_QUEUE_STAT_CNTRS &&
- i < dev->data->nb_tx_queues; i++) {
- stats->q_opackets[i] = internal->tx_queue[i].tx_stat.pkts;
- stats->q_obytes[i] = internal->tx_queue[i].tx_stat.bytes;
- tx_packets_total += stats->q_opackets[i];
- tx_bytes_total += stats->q_obytes[i];
- tx_packets_err_total += internal->tx_queue[i].tx_stat.err_pkts;
- }
-
- stats->ipackets = rx_packets_total;
- stats->ibytes = rx_bytes_total;
- stats->imissed = rx_missed_total;
- stats->opackets = tx_packets_total;
- stats->obytes = tx_bytes_total;
- stats->oerrors = tx_packets_err_total;
-
- return 0;
-}
-
-static int
-eth_stats_reset(struct rte_eth_dev *dev)
-{
- unsigned int i;
- struct pmd_internals *internal = dev->data->dev_private;
-
- for (i = 0; i < dev->data->nb_rx_queues; i++) {
- internal->rx_queue[i].rx_stat.pkts = 0;
- internal->rx_queue[i].rx_stat.bytes = 0;
- queue_missed_stat_reset(dev, i);
- }
-
- for (i = 0; i < dev->data->nb_tx_queues; i++) {
- internal->tx_queue[i].tx_stat.pkts = 0;
- internal->tx_queue[i].tx_stat.bytes = 0;
- internal->tx_queue[i].tx_stat.err_pkts = 0;
- }
-
- return 0;
-}
-
-static inline void
-infinite_rx_ring_free(struct rte_ring *pkts)
-{
- struct rte_mbuf *bufs;
-
- while (!rte_ring_dequeue(pkts, (void **)&bufs))
- rte_pktmbuf_free(bufs);
-
- rte_ring_free(pkts);
-}
-
-static int
-eth_dev_close(struct rte_eth_dev *dev)
-{
- unsigned int i;
- struct pmd_internals *internals = dev->data->dev_private;
-
- PMD_LOG(INFO, "Closing pcap ethdev on NUMA socket %d",
- rte_socket_id());
-
- eth_dev_stop(dev);
-
- rte_free(dev->process_private);
-
- if (rte_eal_process_type() != RTE_PROC_PRIMARY)
- return 0;
-
- /* Device wide flag, but cleanup must be performed per queue. */
- if (internals->infinite_rx) {
- for (i = 0; i < dev->data->nb_rx_queues; i++) {
- struct pcap_rx_queue *pcap_q = &internals->rx_queue[i];
-
- /*
- * 'pcap_q->pkts' can be NULL if 'eth_dev_close()'
- * called before 'eth_rx_queue_setup()' has been called
- */
- if (pcap_q->pkts == NULL)
- continue;
-
- infinite_rx_ring_free(pcap_q->pkts);
- }
- }
-
- if (internals->phy_mac == 0)
- /* not dynamically allocated, must not be freed */
- dev->data->mac_addrs = NULL;
-
- return 0;
-}
-
-static void
-eth_queue_release(void *q __rte_unused)
-{
-}
-
-static int
-eth_link_update(struct rte_eth_dev *dev __rte_unused,
- int wait_to_complete __rte_unused)
-{
- return 0;
-}
-
-static int
-eth_rx_queue_setup(struct rte_eth_dev *dev,
- uint16_t rx_queue_id,
- uint16_t nb_rx_desc __rte_unused,
- unsigned int socket_id __rte_unused,
- const struct rte_eth_rxconf *rx_conf __rte_unused,
- struct rte_mempool *mb_pool)
-{
- struct pmd_internals *internals = dev->data->dev_private;
- struct pcap_rx_queue *pcap_q = &internals->rx_queue[rx_queue_id];
-
- pcap_q->mb_pool = mb_pool;
- pcap_q->port_id = dev->data->port_id;
- pcap_q->queue_id = rx_queue_id;
- dev->data->rx_queues[rx_queue_id] = pcap_q;
-
- if (internals->infinite_rx) {
- struct pmd_process_private *pp;
- char ring_name[NAME_MAX];
- static uint32_t ring_number;
- uint64_t pcap_pkt_count = 0;
- struct rte_mbuf *bufs[1];
- pcap_t **pcap;
-
- pp = rte_eth_devices[pcap_q->port_id].process_private;
- pcap = &pp->rx_pcap[pcap_q->queue_id];
-
- if (unlikely(*pcap == NULL))
- return -ENOENT;
-
- pcap_pkt_count = count_packets_in_pcap(pcap, pcap_q);
-
- snprintf(ring_name, sizeof(ring_name), "PCAP_RING%" PRIu32,
- ring_number);
-
- pcap_q->pkts = rte_ring_create(ring_name,
- rte_align64pow2(pcap_pkt_count + 1), 0,
- RING_F_SP_ENQ | RING_F_SC_DEQ);
- ring_number++;
- if (!pcap_q->pkts)
- return -ENOENT;
-
- /* Fill ring with packets from PCAP file one by one. */
- while (eth_pcap_rx(pcap_q, bufs, 1)) {
- /* Check for multiseg mbufs. */
- if (bufs[0]->nb_segs != 1) {
- infinite_rx_ring_free(pcap_q->pkts);
- PMD_LOG(ERR,
- "Multiseg mbufs are not supported in infinite_rx mode.");
- return -EINVAL;
- }
-
- rte_ring_enqueue_bulk(pcap_q->pkts,
- (void * const *)bufs, 1, NULL);
- }
-
- if (rte_ring_count(pcap_q->pkts) < pcap_pkt_count) {
- infinite_rx_ring_free(pcap_q->pkts);
- PMD_LOG(ERR,
- "Not enough mbufs to accommodate packets in pcap file. "
- "At least %" PRIu64 " mbufs per queue is required.",
- pcap_pkt_count);
- return -EINVAL;
- }
-
- /*
- * Reset the stats for this queue since eth_pcap_rx calls above
- * didn't result in the application receiving packets.
- */
- pcap_q->rx_stat.pkts = 0;
- pcap_q->rx_stat.bytes = 0;
- }
-
- return 0;
-}
-
-static int
-eth_tx_queue_setup(struct rte_eth_dev *dev,
- uint16_t tx_queue_id,
- uint16_t nb_tx_desc __rte_unused,
- unsigned int socket_id __rte_unused,
- const struct rte_eth_txconf *tx_conf __rte_unused)
-{
- struct pmd_internals *internals = dev->data->dev_private;
- struct pcap_tx_queue *pcap_q = &internals->tx_queue[tx_queue_id];
-
- pcap_q->port_id = dev->data->port_id;
- pcap_q->queue_id = tx_queue_id;
- dev->data->tx_queues[tx_queue_id] = pcap_q;
-
- return 0;
-}
-
-static int
-eth_rx_queue_start(struct rte_eth_dev *dev, uint16_t rx_queue_id)
-{
- dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
-
- return 0;
-}
-
-static int
-eth_tx_queue_start(struct rte_eth_dev *dev, uint16_t tx_queue_id)
-{
- dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STARTED;
-
- return 0;
-}
-
-static int
-eth_rx_queue_stop(struct rte_eth_dev *dev, uint16_t rx_queue_id)
-{
- dev->data->rx_queue_state[rx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
-
- return 0;
-}
-
-static int
-eth_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id)
-{
- dev->data->tx_queue_state[tx_queue_id] = RTE_ETH_QUEUE_STATE_STOPPED;
-
- return 0;
-}
-
-static const struct eth_dev_ops ops = {
- .dev_start = eth_dev_start,
- .dev_stop = eth_dev_stop,
- .dev_close = eth_dev_close,
- .dev_configure = eth_dev_configure,
- .dev_infos_get = eth_dev_info,
- .rx_queue_setup = eth_rx_queue_setup,
- .tx_queue_setup = eth_tx_queue_setup,
- .rx_queue_start = eth_rx_queue_start,
- .tx_queue_start = eth_tx_queue_start,
- .rx_queue_stop = eth_rx_queue_stop,
- .tx_queue_stop = eth_tx_queue_stop,
- .rx_queue_release = eth_queue_release,
- .tx_queue_release = eth_queue_release,
- .link_update = eth_link_update,
- .stats_get = eth_stats_get,
- .stats_reset = eth_stats_reset,
-};
-
-static int
-add_queue(struct pmd_devargs *pmd, const char *name, const char *type,
- pcap_t *pcap, pcap_dumper_t *dumper)
-{
- if (pmd->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES)
- return -1;
- if (pcap)
- pmd->queue[pmd->num_of_queue].pcap = pcap;
- if (dumper)
- pmd->queue[pmd->num_of_queue].dumper = dumper;
- pmd->queue[pmd->num_of_queue].name = name;
- pmd->queue[pmd->num_of_queue].type = type;
- pmd->num_of_queue++;
- return 0;
-}
-
-/*
- * Function handler that opens the pcap file for reading a stores a
- * reference of it for use it later on.
- */
-static int
-open_rx_pcap(const char *key, const char *value, void *extra_args)
-{
- const char *pcap_filename = value;
- struct pmd_devargs *rx = extra_args;
- pcap_t *pcap = NULL;
-
- if (open_single_rx_pcap(pcap_filename, &pcap) < 0)
- return -1;
-
- if (add_queue(rx, pcap_filename, key, pcap, NULL) < 0) {
- pcap_close(pcap);
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Opens a pcap file for writing and stores a reference to it
- * for use it later on.
- */
-static int
-open_tx_pcap(const char *key, const char *value, void *extra_args)
-{
- const char *pcap_filename = value;
- struct pmd_devargs *dumpers = extra_args;
- pcap_dumper_t *dumper;
-
- if (open_single_tx_pcap(pcap_filename, &dumper) < 0)
- return -1;
-
- if (add_queue(dumpers, pcap_filename, key, NULL, dumper) < 0) {
- pcap_dump_close(dumper);
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Opens an interface for reading and writing
- */
-static inline int
-open_rx_tx_iface(const char *key, const char *value, void *extra_args)
-{
- const char *iface = value;
- struct pmd_devargs *tx = extra_args;
- pcap_t *pcap = NULL;
-
- if (open_single_iface(iface, &pcap) < 0)
- return -1;
-
- tx->queue[0].pcap = pcap;
- tx->queue[0].name = iface;
- tx->queue[0].type = key;
-
- return 0;
-}
-
-static inline int
-set_iface_direction(const char *iface, pcap_t *pcap,
- pcap_direction_t direction)
-{
- const char *direction_str = (direction == PCAP_D_IN) ? "IN" : "OUT";
- if (pcap_setdirection(pcap, direction) < 0) {
- PMD_LOG(ERR, "Setting %s pcap direction %s failed - %s\n",
- iface, direction_str, pcap_geterr(pcap));
- return -1;
- }
- PMD_LOG(INFO, "Setting %s pcap direction %s\n",
- iface, direction_str);
- return 0;
-}
-
-static inline int
-open_iface(const char *key, const char *value, void *extra_args)
-{
- const char *iface = value;
- struct pmd_devargs *pmd = extra_args;
- pcap_t *pcap = NULL;
-
- if (open_single_iface(iface, &pcap) < 0)
- return -1;
- if (add_queue(pmd, iface, key, pcap, NULL) < 0) {
- pcap_close(pcap);
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Opens a NIC for reading packets from it
- */
-static inline int
-open_rx_iface(const char *key, const char *value, void *extra_args)
-{
- int ret = open_iface(key, value, extra_args);
- if (ret < 0)
- return ret;
- if (strcmp(key, ETH_PCAP_RX_IFACE_IN_ARG) == 0) {
- struct pmd_devargs *pmd = extra_args;
- unsigned int qid = pmd->num_of_queue - 1;
-
- set_iface_direction(pmd->queue[qid].name,
- pmd->queue[qid].pcap,
- PCAP_D_IN);
- }
-
- return 0;
-}
-
-static inline int
-rx_iface_args_process(const char *key, const char *value, void *extra_args)
-{
- if (strcmp(key, ETH_PCAP_RX_IFACE_ARG) == 0 ||
- strcmp(key, ETH_PCAP_RX_IFACE_IN_ARG) == 0)
- return open_rx_iface(key, value, extra_args);
-
- return 0;
-}
-
-/*
- * Opens a NIC for writing packets to it
- */
-static int
-open_tx_iface(const char *key, const char *value, void *extra_args)
-{
- return open_iface(key, value, extra_args);
-}
-
-static int
-select_phy_mac(const char *key __rte_unused, const char *value,
- void *extra_args)
-{
- if (extra_args) {
- const int phy_mac = atoi(value);
- int *enable_phy_mac = extra_args;
-
- if (phy_mac)
- *enable_phy_mac = 1;
- }
- return 0;
-}
-
-static int
-get_infinite_rx_arg(const char *key __rte_unused,
- const char *value, void *extra_args)
-{
- if (extra_args) {
- const int infinite_rx = atoi(value);
- int *enable_infinite_rx = extra_args;
-
- if (infinite_rx > 0)
- *enable_infinite_rx = 1;
- }
- return 0;
-}
-
-static int
-pmd_init_internals(struct rte_vdev_device *vdev,
- const unsigned int nb_rx_queues,
- const unsigned int nb_tx_queues,
- struct pmd_internals **internals,
- struct rte_eth_dev **eth_dev)
-{
- struct rte_eth_dev_data *data;
- struct pmd_process_private *pp;
- unsigned int numa_node = vdev->device.numa_node;
-
- PMD_LOG(INFO, "Creating pcap-backed ethdev on numa socket %d",
- numa_node);
-
- pp = (struct pmd_process_private *)
- rte_zmalloc(NULL, sizeof(struct pmd_process_private),
- RTE_CACHE_LINE_SIZE);
-
- if (pp == NULL) {
- PMD_LOG(ERR,
- "Failed to allocate memory for process private");
- return -1;
- }
-
- /* reserve an ethdev entry */
- *eth_dev = rte_eth_vdev_allocate(vdev, sizeof(**internals));
- if (!(*eth_dev)) {
- rte_free(pp);
- return -1;
- }
- (*eth_dev)->process_private = pp;
- /* now put it all together
- * - store queue data in internals,
- * - store numa_node info in eth_dev
- * - point eth_dev_data to internals
- * - and point eth_dev structure to new eth_dev_data structure
- */
- *internals = (*eth_dev)->data->dev_private;
- /*
- * Interface MAC = 02:70:63:61:70:<iface_idx>
- * derived from: 'locally administered':'p':'c':'a':'p':'iface_idx'
- * where the middle 4 characters are converted to hex.
- */
- (*internals)->eth_addr = (struct rte_ether_addr) {
- .addr_bytes = { 0x02, 0x70, 0x63, 0x61, 0x70, iface_idx++ }
- };
- (*internals)->phy_mac = 0;
- data = (*eth_dev)->data;
- data->nb_rx_queues = (uint16_t)nb_rx_queues;
- data->nb_tx_queues = (uint16_t)nb_tx_queues;
- data->dev_link = pmd_link;
- data->mac_addrs = &(*internals)->eth_addr;
- data->promiscuous = 1;
- data->all_multicast = 1;
- data->dev_flags |= RTE_ETH_DEV_AUTOFILL_QUEUE_XSTATS;
-
- /*
- * NOTE: we'll replace the data element, of originally allocated
- * eth_dev so the rings are local per-process
- */
- (*eth_dev)->dev_ops = &ops;
-
- strlcpy((*internals)->devargs, rte_vdev_device_args(vdev),
- ETH_PCAP_ARG_MAXLEN);
-
- return 0;
-}
-
-static int
-eth_pcap_update_mac(const char *if_name, struct rte_eth_dev *eth_dev,
- const unsigned int numa_node)
-{
-#if defined(RTE_EXEC_ENV_LINUX)
- void *mac_addrs;
- struct ifreq ifr;
- int if_fd = socket(AF_INET, SOCK_DGRAM, 0);
-
- if (if_fd == -1)
- return -1;
-
- rte_strscpy(ifr.ifr_name, if_name, sizeof(ifr.ifr_name));
- if (ioctl(if_fd, SIOCGIFHWADDR, &ifr)) {
- close(if_fd);
- return -1;
- }
-
- mac_addrs = rte_zmalloc_socket(NULL, RTE_ETHER_ADDR_LEN, 0, numa_node);
- if (!mac_addrs) {
- close(if_fd);
- return -1;
- }
-
- PMD_LOG(INFO, "Setting phy MAC for %s", if_name);
- eth_dev->data->mac_addrs = mac_addrs;
- rte_memcpy(eth_dev->data->mac_addrs[0].addr_bytes,
- ifr.ifr_hwaddr.sa_data, RTE_ETHER_ADDR_LEN);
-
- close(if_fd);
-
- return 0;
-
-#elif defined(RTE_EXEC_ENV_FREEBSD)
- void *mac_addrs;
- struct if_msghdr *ifm;
- struct sockaddr_dl *sdl;
- int mib[6];
- size_t len = 0;
- char *buf;
-
- mib[0] = CTL_NET;
- mib[1] = AF_ROUTE;
- mib[2] = 0;
- mib[3] = AF_LINK;
- mib[4] = NET_RT_IFLIST;
- mib[5] = if_nametoindex(if_name);
-
- if (sysctl(mib, 6, NULL, &len, NULL, 0) < 0)
- return -1;
-
- if (len == 0)
- return -1;
-
- buf = rte_malloc(NULL, len, 0);
- if (!buf)
- return -1;
-
- if (sysctl(mib, 6, buf, &len, NULL, 0) < 0) {
- rte_free(buf);
- return -1;
- }
- ifm = (struct if_msghdr *)buf;
- sdl = (struct sockaddr_dl *)(ifm + 1);
-
- mac_addrs = rte_zmalloc_socket(NULL, RTE_ETHER_ADDR_LEN, 0, numa_node);
- if (!mac_addrs) {
- rte_free(buf);
- return -1;
- }
-
- PMD_LOG(INFO, "Setting phy MAC for %s", if_name);
- eth_dev->data->mac_addrs = mac_addrs;
- rte_memcpy(eth_dev->data->mac_addrs[0].addr_bytes,
- LLADDR(sdl), RTE_ETHER_ADDR_LEN);
-
- rte_free(buf);
-
- return 0;
-#else
- return -1;
-#endif
-}
-
-static int
-eth_from_pcaps_common(struct rte_vdev_device *vdev,
- struct pmd_devargs_all *devargs_all,
- struct pmd_internals **internals, struct rte_eth_dev **eth_dev)
-{
- struct pmd_process_private *pp;
- struct pmd_devargs *rx_queues = &devargs_all->rx_queues;
- struct pmd_devargs *tx_queues = &devargs_all->tx_queues;
- const unsigned int nb_rx_queues = rx_queues->num_of_queue;
- const unsigned int nb_tx_queues = tx_queues->num_of_queue;
- unsigned int i;
-
- if (pmd_init_internals(vdev, nb_rx_queues, nb_tx_queues, internals,
- eth_dev) < 0)
- return -1;
-
- pp = (*eth_dev)->process_private;
- for (i = 0; i < nb_rx_queues; i++) {
- struct pcap_rx_queue *rx = &(*internals)->rx_queue[i];
- struct devargs_queue *queue = &rx_queues->queue[i];
-
- pp->rx_pcap[i] = queue->pcap;
- strlcpy(rx->name, queue->name, sizeof(rx->name));
- strlcpy(rx->type, queue->type, sizeof(rx->type));
- }
-
- for (i = 0; i < nb_tx_queues; i++) {
- struct pcap_tx_queue *tx = &(*internals)->tx_queue[i];
- struct devargs_queue *queue = &tx_queues->queue[i];
-
- pp->tx_dumper[i] = queue->dumper;
- pp->tx_pcap[i] = queue->pcap;
- strlcpy(tx->name, queue->name, sizeof(tx->name));
- strlcpy(tx->type, queue->type, sizeof(tx->type));
- }
-
- return 0;
-}
-
-static int
-eth_from_pcaps(struct rte_vdev_device *vdev,
- struct pmd_devargs_all *devargs_all)
-{
- struct pmd_internals *internals = NULL;
- struct rte_eth_dev *eth_dev = NULL;
- struct pmd_devargs *rx_queues = &devargs_all->rx_queues;
- int single_iface = devargs_all->single_iface;
- unsigned int infinite_rx = devargs_all->infinite_rx;
- int ret;
-
- ret = eth_from_pcaps_common(vdev, devargs_all, &internals, ð_dev);
-
- if (ret < 0)
- return ret;
-
- /* store weather we are using a single interface for rx/tx or not */
- internals->single_iface = single_iface;
-
- if (single_iface) {
- internals->if_index = if_nametoindex(rx_queues->queue[0].name);
-
- /* phy_mac arg is applied only only if "iface" devarg is provided */
- if (rx_queues->phy_mac) {
- if (eth_pcap_update_mac(rx_queues->queue[0].name,
- eth_dev, vdev->device.numa_node) == 0)
- internals->phy_mac = 1;
- }
- }
-
- internals->infinite_rx = infinite_rx;
- /* Assign rx ops. */
- if (infinite_rx)
- eth_dev->rx_pkt_burst = eth_pcap_rx_infinite;
- else if (devargs_all->is_rx_pcap || devargs_all->is_rx_iface ||
- single_iface)
- eth_dev->rx_pkt_burst = eth_pcap_rx;
- else
- eth_dev->rx_pkt_burst = eth_null_rx;
-
- /* Assign tx ops. */
- if (devargs_all->is_tx_pcap)
- eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
- else if (devargs_all->is_tx_iface || single_iface)
- eth_dev->tx_pkt_burst = eth_pcap_tx;
- else
- eth_dev->tx_pkt_burst = eth_tx_drop;
-
- rte_eth_dev_probing_finish(eth_dev);
- return 0;
-}
-
-static int
-pmd_pcap_probe(struct rte_vdev_device *dev)
-{
- const char *name;
- struct rte_kvargs *kvlist;
- struct pmd_devargs pcaps = {0};
- struct pmd_devargs dumpers = {0};
- struct rte_eth_dev *eth_dev = NULL;
- struct pmd_internals *internal;
- int ret = 0;
-
- struct pmd_devargs_all devargs_all = {
- .single_iface = 0,
- .is_tx_pcap = 0,
- .is_tx_iface = 0,
- .infinite_rx = 0,
- };
-
- name = rte_vdev_device_name(dev);
- PMD_LOG(INFO, "Initializing pmd_pcap for %s", name);
-
- gettimeofday(&start_time, NULL);
- start_cycles = rte_get_timer_cycles();
- hz = rte_get_timer_hz();
-
- ret = rte_mbuf_dyn_rx_timestamp_register(×tamp_dynfield_offset,
- ×tamp_rx_dynflag);
- if (ret != 0) {
- PMD_LOG(ERR, "Failed to register Rx timestamp field/flag");
- return -1;
- }
-
- if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
- eth_dev = rte_eth_dev_attach_secondary(name);
- if (!eth_dev) {
- PMD_LOG(ERR, "Failed to probe %s", name);
- return -1;
- }
-
- internal = eth_dev->data->dev_private;
-
- kvlist = rte_kvargs_parse(internal->devargs, valid_arguments);
- if (kvlist == NULL)
- return -1;
- } else {
- kvlist = rte_kvargs_parse(rte_vdev_device_args(dev),
- valid_arguments);
- if (kvlist == NULL)
- return -1;
- }
-
- /*
- * If iface argument is passed we open the NICs and use them for
- * reading / writing
- */
- if (rte_kvargs_count(kvlist, ETH_PCAP_IFACE_ARG) == 1) {
-
- ret = rte_kvargs_process(kvlist, ETH_PCAP_IFACE_ARG,
- &open_rx_tx_iface, &pcaps);
- if (ret < 0)
- goto free_kvlist;
-
- dumpers.queue[0] = pcaps.queue[0];
-
- ret = rte_kvargs_process(kvlist, ETH_PCAP_PHY_MAC_ARG,
- &select_phy_mac, &pcaps.phy_mac);
- if (ret < 0)
- goto free_kvlist;
-
- dumpers.phy_mac = pcaps.phy_mac;
-
- devargs_all.single_iface = 1;
- pcaps.num_of_queue = 1;
- dumpers.num_of_queue = 1;
-
- goto create_eth;
- }
-
- /*
- * We check whether we want to open a RX stream from a real NIC, a
- * pcap file or open a dummy RX stream
- */
- devargs_all.is_rx_pcap =
- rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG) ? 1 : 0;
- devargs_all.is_rx_iface =
- (rte_kvargs_count(kvlist, ETH_PCAP_RX_IFACE_ARG) +
- rte_kvargs_count(kvlist, ETH_PCAP_RX_IFACE_IN_ARG)) ? 1 : 0;
- pcaps.num_of_queue = 0;
-
- devargs_all.is_tx_pcap =
- rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG) ? 1 : 0;
- devargs_all.is_tx_iface =
- rte_kvargs_count(kvlist, ETH_PCAP_TX_IFACE_ARG) ? 1 : 0;
- dumpers.num_of_queue = 0;
-
- if (devargs_all.is_rx_pcap) {
- /*
- * We check whether we want to infinitely rx the pcap file.
- */
- unsigned int infinite_rx_arg_cnt = rte_kvargs_count(kvlist,
- ETH_PCAP_INFINITE_RX_ARG);
-
- if (infinite_rx_arg_cnt == 1) {
- ret = rte_kvargs_process(kvlist,
- ETH_PCAP_INFINITE_RX_ARG,
- &get_infinite_rx_arg,
- &devargs_all.infinite_rx);
- if (ret < 0)
- goto free_kvlist;
- PMD_LOG(INFO, "infinite_rx has been %s for %s",
- devargs_all.infinite_rx ? "enabled" : "disabled",
- name);
-
- } else if (infinite_rx_arg_cnt > 1) {
- PMD_LOG(WARNING, "infinite_rx has not been enabled since the "
- "argument has been provided more than once "
- "for %s", name);
- }
-
- ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_PCAP_ARG,
- &open_rx_pcap, &pcaps);
- } else if (devargs_all.is_rx_iface) {
- ret = rte_kvargs_process(kvlist, NULL,
- &rx_iface_args_process, &pcaps);
- } else if (devargs_all.is_tx_iface || devargs_all.is_tx_pcap) {
- unsigned int i;
-
- /* Count number of tx queue args passed before dummy rx queue
- * creation so a dummy rx queue can be created for each tx queue
- */
- unsigned int num_tx_queues =
- (rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG) +
- rte_kvargs_count(kvlist, ETH_PCAP_TX_IFACE_ARG));
-
- PMD_LOG(INFO, "Creating null rx queue since no rx queues were provided.");
-
- /* Creating a dummy rx queue for each tx queue passed */
- for (i = 0; i < num_tx_queues; i++)
- ret = add_queue(&pcaps, "dummy_rx", "rx_null", NULL,
- NULL);
- } else {
- PMD_LOG(ERR, "Error - No rx or tx queues provided");
- ret = -ENOENT;
- }
- if (ret < 0)
- goto free_kvlist;
-
- /*
- * We check whether we want to open a TX stream to a real NIC,
- * a pcap file, or drop packets on tx
- */
- if (devargs_all.is_tx_pcap) {
- ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_PCAP_ARG,
- &open_tx_pcap, &dumpers);
- } else if (devargs_all.is_tx_iface) {
- ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_IFACE_ARG,
- &open_tx_iface, &dumpers);
- } else {
- unsigned int i;
-
- PMD_LOG(INFO, "Dropping packets on tx since no tx queues were provided.");
-
- /* Add 1 dummy queue per rxq which counts and drops packets. */
- for (i = 0; i < pcaps.num_of_queue; i++)
- ret = add_queue(&dumpers, "dummy_tx", "tx_drop", NULL,
- NULL);
- }
-
- if (ret < 0)
- goto free_kvlist;
-
-create_eth:
- if (rte_eal_process_type() == RTE_PROC_SECONDARY) {
- struct pmd_process_private *pp;
- unsigned int i;
-
- internal = eth_dev->data->dev_private;
- pp = (struct pmd_process_private *)
- rte_zmalloc(NULL,
- sizeof(struct pmd_process_private),
- RTE_CACHE_LINE_SIZE);
-
- if (pp == NULL) {
- PMD_LOG(ERR,
- "Failed to allocate memory for process private");
- ret = -1;
- goto free_kvlist;
- }
-
- eth_dev->dev_ops = &ops;
- eth_dev->device = &dev->device;
-
- /* setup process private */
- for (i = 0; i < pcaps.num_of_queue; i++)
- pp->rx_pcap[i] = pcaps.queue[i].pcap;
-
- for (i = 0; i < dumpers.num_of_queue; i++) {
- pp->tx_dumper[i] = dumpers.queue[i].dumper;
- pp->tx_pcap[i] = dumpers.queue[i].pcap;
- }
-
- eth_dev->process_private = pp;
- eth_dev->rx_pkt_burst = eth_pcap_rx;
- if (devargs_all.is_tx_pcap)
- eth_dev->tx_pkt_burst = eth_pcap_tx_dumper;
- else
- eth_dev->tx_pkt_burst = eth_pcap_tx;
-
- rte_eth_dev_probing_finish(eth_dev);
- goto free_kvlist;
- }
-
- devargs_all.rx_queues = pcaps;
- devargs_all.tx_queues = dumpers;
-
- ret = eth_from_pcaps(dev, &devargs_all);
-
-free_kvlist:
- rte_kvargs_free(kvlist);
-
- return ret;
-}
-
-static int
-pmd_pcap_remove(struct rte_vdev_device *dev)
-{
- struct rte_eth_dev *eth_dev = NULL;
-
- if (!dev)
- return -1;
-
- eth_dev = rte_eth_dev_allocated(rte_vdev_device_name(dev));
- if (eth_dev == NULL)
- return 0; /* port already released */
-
- eth_dev_close(eth_dev);
- rte_eth_dev_release_port(eth_dev);
-
- return 0;
-}
-
-static struct rte_vdev_driver pmd_pcap_drv = {
- .probe = pmd_pcap_probe,
- .remove = pmd_pcap_remove,
-};
-
-RTE_PMD_REGISTER_VDEV(net_pcap, pmd_pcap_drv);
-RTE_PMD_REGISTER_ALIAS(net_pcap, eth_pcap);
-RTE_PMD_REGISTER_PARAM_STRING(net_pcap,
- ETH_PCAP_RX_PCAP_ARG "=<string> "
- ETH_PCAP_TX_PCAP_ARG "=<string> "
- ETH_PCAP_RX_IFACE_ARG "=<ifc> "
- ETH_PCAP_RX_IFACE_IN_ARG "=<ifc> "
- ETH_PCAP_TX_IFACE_ARG "=<ifc> "
- ETH_PCAP_IFACE_ARG "=<ifc> "
- ETH_PCAP_PHY_MAC_ARG "=<int>"
- ETH_PCAP_INFINITE_RX_ARG "=<0|1>");
git.droids-corp.org / dpdk.git / commitdiff