examples/bbdev_app/main.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2017 Intel Corporation
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <inttypes.h>
#include <sys/types.h>
#include <sys/unistd.h>
#include <sys/queue.h>
#include <stdarg.h>
#include <ctype.h>
#include <errno.h>
#include <math.h>
#include <assert.h>
#include <getopt.h>
#include <signal.h>

#include "rte_atomic.h"
#include "rte_common.h"
#include "rte_eal.h"
#include "rte_cycles.h"
#include "rte_ether.h"
#include "rte_ethdev.h"
#include "rte_ip.h"
#include "rte_lcore.h"
#include "rte_malloc.h"
#include "rte_mbuf.h"
#include "rte_memory.h"
#include "rte_mempool.h"
#include "rte_log.h"
#include "rte_bbdev.h"
#include "rte_bbdev_op.h"

/* LLR values - negative value for '1' bit */
#define LLR_1_BIT 0x81
#define LLR_0_BIT 0x7F

#define MAX_PKT_BURST 32
#define NB_MBUF 8191
#define MEMPOOL_CACHE_SIZE 256

/* Hardcoded K value */
#define K 40
#define NCB (3 * RTE_ALIGN_CEIL(K + 4, 32))

#define CRC_24B_LEN 3

/* Configurable number of RX/TX ring descriptors */
#define RTE_TEST_RX_DESC_DEFAULT 128
#define RTE_TEST_TX_DESC_DEFAULT 512

#define BBDEV_ASSERT(a) do { \
        if (!(a)) { \
                usage(prgname); \
                return -1; \
        } \
} while (0)

static const struct rte_eth_conf port_conf = {
        .rxmode = {
                .mq_mode = ETH_MQ_RX_NONE,
                .max_rx_pkt_len = ETHER_MAX_LEN,
                .split_hdr_size = 0,
                .header_split = 0, 
                .hw_ip_checksum = 0, 
                .hw_vlan_filter = 0, 
                .jumbo_frame = 0, 
                .hw_strip_crc = 0, 
        },
        .txmode = {
                .mq_mode = ETH_MQ_TX_NONE,
        },
};

struct rte_bbdev_op_turbo_enc def_op_enc = {
        /* These values are arbitrarily put, and does not map to the real
         * values for the data received from ethdev ports
         */
        .rv_index = 0,
        .code_block_mode = 1,
        .cb_params = {
                .k = K,
        },
        .op_flags = RTE_BBDEV_TURBO_CRC_24A_ATTACH
};

struct rte_bbdev_op_turbo_dec def_op_dec = {
        /* These values are arbitrarily put, and does not map to the real
         * values for the data received from ethdev ports
         */
        .code_block_mode = 1,
        .cb_params = {
                .k = K,
        },
        .rv_index = 0,
        .iter_max = 8,
        .iter_min = 4,
        .ext_scale = 15,
        .num_maps = 0,
        .op_flags = RTE_BBDEV_TURBO_NEG_LLR_1_BIT_IN
};

struct app_config_params {
        /* Placeholders for app params */
        uint16_t port_id;
        uint16_t bbdev_id;
        uint64_t enc_core_mask;
        uint64_t dec_core_mask;

        /* Values filled during init time */
        uint16_t enc_queue_ids[RTE_MAX_LCORE];
        uint16_t dec_queue_ids[RTE_MAX_LCORE];
        uint16_t num_enc_cores;
        uint16_t num_dec_cores;
};

struct lcore_statistics {
        unsigned int enqueued;
        unsigned int dequeued;
        unsigned int rx_lost_packets;
        unsigned int enc_to_dec_lost_packets;
        unsigned int tx_lost_packets;
} __rte_cache_aligned;

struct lcore_conf {
        uint64_t core_type;

        unsigned int port_id;
        unsigned int rx_queue_id;
        unsigned int tx_queue_id;

        unsigned int bbdev_id;
        unsigned int enc_queue_id;
        unsigned int dec_queue_id;

        uint8_t llr_temp_buf[NCB];

        struct rte_mempool *bbdev_dec_op_pool;
        struct rte_mempool *bbdev_enc_op_pool;
        struct rte_mempool *enc_out_pool;
        struct rte_ring *enc_to_dec_ring;

        struct lcore_statistics *lcore_stats;
} __rte_cache_aligned;

struct stats_lcore_params {
        struct lcore_conf *lconf;
        struct app_config_params *app_params;
};


static const struct app_config_params def_app_config = {
        .port_id = 0,
        .bbdev_id = 0,
        .enc_core_mask = 0x2,
        .dec_core_mask = 0x4,
        .num_enc_cores = 1,
        .num_dec_cores = 1,
};

static rte_atomic16_t global_exit_flag;

/* display usage */
static inline void
usage(const char *prgname)
{
        printf("%s [EAL options] "
                        "  --\n"
                        "  --enc_cores - number of encoding cores (default = 0x2)\n"
                        "  --dec_cores - number of decoding cores (default = 0x4)\n"
                        "  --port_id - Ethernet port ID (default = 0)\n"
                        "  --bbdev_id - BBDev ID (default = 0)\n"
                        "\n", prgname);
}

/* parse core mask */
static inline
uint16_t bbdev_parse_mask(const char *mask)
{
        char *end = NULL;
        unsigned long pm;

        /* parse hexadecimal string */
        pm = strtoul(mask, &end, 16);
        if ((mask[0] == '\0') || (end == NULL) || (*end != '\0'))
                return 0;

        return pm;
}

/* parse core mask */
static inline
uint16_t bbdev_parse_number(const char *mask)
{
        char *end = NULL;
        unsigned long pm;

        /* parse hexadecimal string */
        pm = strtoul(mask, &end, 10);
        if ((mask[0] == '\0') || (end == NULL) || (*end != '\0'))
                return 0;

        return pm;
}

static int
bbdev_parse_args(int argc, char **argv,
                struct app_config_params *app_params)
{
        int optind = 0;
        int opt;
        int opt_indx = 0;
        char *prgname = argv[0];

        static struct option lgopts[] = {
                { "enc_core_mask", required_argument, 0, 'e' },
                { "dec_core_mask", required_argument, 0, 'd' },
                { "port_id", required_argument, 0, 'p' },
                { "bbdev_id", required_argument, 0, 'b' },
                { NULL, 0, 0, 0 }
        };

        BBDEV_ASSERT(argc != 0);
        BBDEV_ASSERT(argv != NULL);
        BBDEV_ASSERT(app_params != NULL);

        while ((opt = getopt_long(argc, argv, "e:d:p:b:", lgopts, &opt_indx)) !=
                EOF) {
                switch (opt) {
                case 'e':
                        app_params->enc_core_mask =
                                bbdev_parse_mask(optarg);
                        if (app_params->enc_core_mask == 0) {
                                usage(prgname);
                                return -1;
                        }
                        app_params->num_enc_cores =
                                __builtin_popcount(app_params->enc_core_mask);
                        break;

                case 'd':
                        app_params->dec_core_mask =
                                bbdev_parse_mask(optarg);
                        if (app_params->dec_core_mask == 0) {
                                usage(prgname);
                                return -1;
                        }
                        app_params->num_dec_cores =
                                __builtin_popcount(app_params->dec_core_mask);
                        break;

                case 'p':
                        app_params->port_id = bbdev_parse_number(optarg);
                        break;

                case 'b':
                        app_params->bbdev_id = bbdev_parse_number(optarg);
                        break;

                default:
                        usage(prgname);
                        return -1;
                }
        }
        optind = 0;
        return optind;
}

static void
signal_handler(int signum)
{
        printf("\nSignal %d received\n", signum);
        rte_atomic16_set(&global_exit_flag, 1);
}

static void
print_mac(unsigned int portid, struct ether_addr *bbdev_ports_eth_address)
{
        printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
                        (unsigned int) portid,
                        bbdev_ports_eth_address->addr_bytes[0],
                        bbdev_ports_eth_address->addr_bytes[1],
                        bbdev_ports_eth_address->addr_bytes[2],
                        bbdev_ports_eth_address->addr_bytes[3],
                        bbdev_ports_eth_address->addr_bytes[4],
                        bbdev_ports_eth_address->addr_bytes[5]);
}

static inline void
pktmbuf_free_bulk(struct rte_mbuf **mbufs, unsigned int nb_to_free)
{
        unsigned int i;
        for (i = 0; i < nb_to_free; ++i)
                rte_pktmbuf_free(mbufs[i]);
}

static inline void
pktmbuf_userdata_free_bulk(struct rte_mbuf **mbufs, unsigned int nb_to_free)
{
        unsigned int i;
        for (i = 0; i < nb_to_free; ++i) {
                struct rte_mbuf *rx_pkt = mbufs[i]->userdata;
                rte_pktmbuf_free(rx_pkt);
                rte_pktmbuf_free(mbufs[i]);
        }
}

/* Check the link status of all ports in up to 9s, and print them finally */
static int
check_port_link_status(uint16_t port_id)
{
#define CHECK_INTERVAL 100 /* 100ms */
#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
        uint8_t count;
        struct rte_eth_link link;

        printf("\nChecking link status.");
        fflush(stdout);

        for (count = 0; count <= MAX_CHECK_TIME &&
                        !rte_atomic16_read(&global_exit_flag); count++) {
                memset(&link, 0, sizeof(link));
                rte_eth_link_get_nowait(port_id, &link);

                if (link.link_status) {
                        const char *dp = (link.link_duplex ==
                                ETH_LINK_FULL_DUPLEX) ?
                                "full-duplex" : "half-duplex";
                        printf("\nPort %u Link Up - speed %u Mbps - %s\n",
                                port_id, link.link_speed, dp);
                        return 0;
                }
                printf(".");
                fflush(stdout);
                rte_delay_ms(CHECK_INTERVAL);
        }

        printf("\nPort %d Link Down\n", port_id);
        return 0;
}

static inline void
add_ether_hdr(struct rte_mbuf *pkt_src, struct rte_mbuf *pkt_dst)
{
        struct ether_hdr *eth_from;
        struct ether_hdr *eth_to;

        eth_from = rte_pktmbuf_mtod(pkt_src, struct ether_hdr *);
        eth_to = rte_pktmbuf_mtod(pkt_dst, struct ether_hdr *);

        /* copy header */
        rte_memcpy(eth_to, eth_from, sizeof(struct ether_hdr));
}

static inline void
add_awgn(struct rte_mbuf **mbufs, uint16_t num_pkts)
{
        RTE_SET_USED(mbufs);
        RTE_SET_USED(num_pkts);
}

/* Encoder output to Decoder input adapter. The Decoder accepts only soft input
 * so each bit of the encoder output must be translated into one byte of LLR. If
 * Sub-block Deinterleaver is bypassed, which is the case, the padding bytes
 * must additionally be insterted at the end of each sub-block.
 */
static inline void
transform_enc_out_dec_in(struct rte_mbuf **mbufs, uint8_t *temp_buf,
                uint16_t num_pkts, uint16_t k)
{
        uint16_t i, l, j;
        uint16_t start_bit_idx;
        uint16_t out_idx;
        uint16_t d = k + 4;
        uint16_t kpi = RTE_ALIGN_CEIL(d, 32);
        uint16_t nd = kpi - d;
        uint16_t ncb = 3 * kpi;

        for (i = 0; i < num_pkts; ++i) {
                uint16_t pkt_data_len = rte_pktmbuf_data_len(mbufs[i]) -
                                sizeof(struct ether_hdr);

                /* Resize the packet if needed */
                if (pkt_data_len < ncb) {
                        char *data = rte_pktmbuf_append(mbufs[i],
                                        ncb - pkt_data_len);
                        if (data == NULL)
                                printf(
                                        "Not enough space in decoder input packet");
                }

                /* Translate each bit into 1 LLR byte. */
                start_bit_idx = 0;
                out_idx = 0;
                for (j = 0; j < 3; ++j) {
                        for (l = start_bit_idx; l < start_bit_idx + d; ++l) {
                                uint8_t *data = rte_pktmbuf_mtod_offset(
                                        mbufs[i], uint8_t *,
                                        sizeof(struct ether_hdr) + (l >> 3));
                                if (*data & (0x80 >> (l & 7)))
                                        temp_buf[out_idx] = LLR_1_BIT;
                                else
                                        temp_buf[out_idx] = LLR_0_BIT;
                                ++out_idx;
                        }
                        /* Padding bytes should be at the end of the sub-block.
                         */
                        memset(&temp_buf[out_idx], 0, nd);
                        out_idx += nd;
                        start_bit_idx += d;
                }

                rte_memcpy(rte_pktmbuf_mtod_offset(mbufs[i], uint8_t *,
                                sizeof(struct ether_hdr)), temp_buf, ncb);
        }
}

static inline void
verify_data(struct rte_mbuf **mbufs, uint16_t num_pkts)
{
        uint16_t i;
        for (i = 0; i < num_pkts; ++i) {
                struct rte_mbuf *out = mbufs[i];
                struct rte_mbuf *in = out->userdata;

                if (memcmp(rte_pktmbuf_mtod_offset(in, uint8_t *,
                                sizeof(struct ether_hdr)),
                                rte_pktmbuf_mtod_offset(out, uint8_t *,
                                sizeof(struct ether_hdr)),
                                K / 8 - CRC_24B_LEN))
                        printf("Input and output buffers are not equal!\n");
        }
}

static int
initialize_ports(struct app_config_params *app_params,
                struct rte_mempool *ethdev_mbuf_mempool)
{
        int ret;
        uint16_t port_id = app_params->port_id;
        uint16_t q;
        /* ethernet addresses of ports */
        struct ether_addr bbdev_port_eth_addr;

        /* initialize ports */
        printf("\nInitializing port %u...\n", app_params->port_id);
        ret = rte_eth_dev_configure(port_id, app_params->num_enc_cores,
                app_params->num_dec_cores, &port_conf);

        if (ret < 0) {
                printf("Cannot configure device: err=%d, port=%u\n",
                        ret, port_id);
                return -1;
        }

        /* initialize RX queues for encoder */
        for (q = 0; q < app_params->num_enc_cores; q++) {
                ret = rte_eth_rx_queue_setup(port_id, q,
                        RTE_TEST_RX_DESC_DEFAULT,
                        rte_eth_dev_socket_id(port_id),
                        NULL, ethdev_mbuf_mempool);
                if (ret < 0) {
                        printf("rte_eth_rx_queue_setup: err=%d, queue=%u\n",
                                ret, q);
                        return -1;
                }
        }
        /* initialize TX queues for decoder */
        for (q = 0; q < app_params->num_dec_cores; q++) {
                ret = rte_eth_tx_queue_setup(port_id, q,
                        RTE_TEST_TX_DESC_DEFAULT,
                        rte_eth_dev_socket_id(port_id), NULL);
                if (ret < 0) {
                        printf("rte_eth_tx_queue_setup: err=%d, queue=%u\n",
                                ret, q);
                        return -1;
                }
        }

        rte_eth_promiscuous_enable(port_id);

        rte_eth_macaddr_get(port_id, &bbdev_port_eth_addr);
        print_mac(port_id, &bbdev_port_eth_addr);

        return 0;
}

static void
lcore_conf_init(struct app_config_params *app_params,
                struct lcore_conf *lcore_conf,
                struct rte_mempool **bbdev_op_pools,
                struct rte_mempool *bbdev_mbuf_mempool,
                struct rte_ring *enc_to_dec_ring,
                struct lcore_statistics *lcore_stats)
{
        unsigned int lcore_id;
        struct lcore_conf *lconf;
        uint16_t rx_queue_id = 0;
        uint16_t tx_queue_id = 0;
        uint16_t enc_q_id = 0;
        uint16_t dec_q_id = 0;

        /* Configure lcores */
        for (lcore_id = 0; lcore_id < 8 * sizeof(uint64_t); ++lcore_id) {
                lconf = &lcore_conf[lcore_id];
                lconf->core_type = 0;

                if ((1ULL << lcore_id) & app_params->enc_core_mask) {
                        lconf->core_type |= (1 << RTE_BBDEV_OP_TURBO_ENC);
                        lconf->rx_queue_id = rx_queue_id++;
                        lconf->enc_queue_id =
                                        app_params->enc_queue_ids[enc_q_id++];
                }

                if ((1ULL << lcore_id) & app_params->dec_core_mask) {
                        lconf->core_type |= (1 << RTE_BBDEV_OP_TURBO_DEC);
                        lconf->tx_queue_id = tx_queue_id++;
                        lconf->dec_queue_id =
                                        app_params->dec_queue_ids[dec_q_id++];
                }

                lconf->bbdev_enc_op_pool =
                                bbdev_op_pools[RTE_BBDEV_OP_TURBO_ENC];
                lconf->bbdev_dec_op_pool =
                                bbdev_op_pools[RTE_BBDEV_OP_TURBO_DEC];
                lconf->bbdev_id = app_params->bbdev_id;
                lconf->port_id = app_params->port_id;
                lconf->enc_out_pool = bbdev_mbuf_mempool;
                lconf->enc_to_dec_ring = enc_to_dec_ring;
                lconf->lcore_stats = &lcore_stats[lcore_id];
        }
}

static void
print_lcore_stats(struct lcore_statistics *lstats, unsigned int lcore_id)
{
        static const char *stats_border = "_______";

        printf("\nLcore %d: %s enqueued count:\t\t%u\n",
                        lcore_id, stats_border, lstats->enqueued);
        printf("Lcore %d: %s dequeued count:\t\t%u\n",
                        lcore_id, stats_border, lstats->dequeued);
        printf("Lcore %d: %s RX lost packets count:\t\t%u\n",
                        lcore_id, stats_border, lstats->rx_lost_packets);
        printf("Lcore %d: %s encoder-to-decoder lost count:\t%u\n",
                        lcore_id, stats_border,
                        lstats->enc_to_dec_lost_packets);
        printf("Lcore %d: %s TX lost packets count:\t\t%u\n",
                        lcore_id, stats_border, lstats->tx_lost_packets);
}

static void
print_stats(struct stats_lcore_params *stats_lcore)
{
        unsigned int l_id;
        unsigned int bbdev_id = stats_lcore->app_params->bbdev_id;
        unsigned int port_id = stats_lcore->app_params->port_id;
        int len, ret, i;

        struct rte_eth_xstat *xstats;
        struct rte_eth_xstat_name *xstats_names;
        struct rte_bbdev_stats bbstats;
        static const char *stats_border = "_______";

        const char clr[] = { 27, '[', '2', 'J', '\0' };
        const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };

        /* Clear screen and move to top left */
        printf("%s%s", clr, topLeft);

        printf("PORT STATISTICS:\n================\n");
        len = rte_eth_xstats_get(port_id, NULL, 0);
        if (len < 0)
                rte_exit(EXIT_FAILURE,
                                "rte_eth_xstats_get(%u) failed: %d", port_id,
                                len);

        xstats = calloc(len, sizeof(*xstats));
        if (xstats == NULL)
                rte_exit(EXIT_FAILURE,
                                "Failed to calloc memory for xstats");

        ret = rte_eth_xstats_get(port_id, xstats, len);
        if (ret < 0 || ret > len) {
                free(xstats);
                rte_exit(EXIT_FAILURE,
                                "rte_eth_xstats_get(%u) len%i failed: %d",
                                port_id, len, ret);
        }

        xstats_names = calloc(len, sizeof(*xstats_names));
        if (xstats_names == NULL) {
                free(xstats);
                rte_exit(EXIT_FAILURE,
                                "Failed to calloc memory for xstats_names");
        }

        ret = rte_eth_xstats_get_names(port_id, xstats_names, len);
        if (ret < 0 || ret > len) {
                free(xstats);
                free(xstats_names);
                rte_exit(EXIT_FAILURE,
                                "rte_eth_xstats_get_names(%u) len%i failed: %d",
                                port_id, len, ret);
        }

        for (i = 0; i < len; i++) {
                if (xstats[i].value > 0)
                        printf("Port %u: %s %s:\t\t%"PRIu64"\n",
                                        port_id, stats_border,
                                        xstats_names[i].name,
                                        xstats[i].value);
        }

        ret = rte_bbdev_stats_get(bbdev_id, &bbstats);
        if (ret < 0) {
                free(xstats);
                free(xstats_names);
                rte_exit(EXIT_FAILURE,
                                "ERROR(%d): Failure to get BBDEV %u statistics\n",
                                ret, bbdev_id);
        }

        printf("\nBBDEV STATISTICS:\n=================\n");
        printf("BBDEV %u: %s enqueue count:\t\t%"PRIu64"\n",
                        bbdev_id, stats_border,
                        bbstats.enqueued_count);
        printf("BBDEV %u: %s dequeue count:\t\t%"PRIu64"\n",
                        bbdev_id, stats_border,
                        bbstats.dequeued_count);
        printf("BBDEV %u: %s enqueue error count:\t\t%"PRIu64"\n",
                        bbdev_id, stats_border,
                        bbstats.enqueue_err_count);
        printf("BBDEV %u: %s dequeue error count:\t\t%"PRIu64"\n\n",
                        bbdev_id, stats_border,
                        bbstats.dequeue_err_count);

        printf("LCORE STATISTICS:\n=================\n");
        for (l_id = 0; l_id < RTE_MAX_LCORE; ++l_id) {
                if (stats_lcore->lconf[l_id].core_type == 0)
                        continue;
                print_lcore_stats(stats_lcore->lconf[l_id].lcore_stats, l_id);
        }

        free(xstats);
        free(xstats_names);
}

static int
stats_loop(void *arg)
{
        struct stats_lcore_params *stats_lcore = arg;

        while (!rte_atomic16_read(&global_exit_flag)) {
                print_stats(stats_lcore);
                rte_delay_ms(500);
        }

        return 0;
}

static inline void
run_encoding(struct lcore_conf *lcore_conf)
{
        uint16_t i;
        uint16_t port_id, rx_queue_id;
        uint16_t bbdev_id, enc_queue_id;
        uint16_t nb_rx, nb_enq, nb_deq, nb_sent;
        struct rte_mbuf *rx_pkts_burst[MAX_PKT_BURST];
        struct rte_mbuf *enc_out_pkts[MAX_PKT_BURST];
        struct rte_bbdev_enc_op *bbdev_ops_burst[MAX_PKT_BURST];
        struct lcore_statistics *lcore_stats;
        struct rte_mempool *bbdev_op_pool, *enc_out_pool;
        struct rte_ring *enc_to_dec_ring;
        const int in_data_len = (def_op_enc.cb_params.k / 8) - CRC_24B_LEN;

        lcore_stats = lcore_conf->lcore_stats;
        port_id = lcore_conf->port_id;
        rx_queue_id = lcore_conf->rx_queue_id;
        bbdev_id = lcore_conf->bbdev_id;
        enc_queue_id = lcore_conf->enc_queue_id;
        bbdev_op_pool = lcore_conf->bbdev_enc_op_pool;
        enc_out_pool = lcore_conf->enc_out_pool;
        enc_to_dec_ring = lcore_conf->enc_to_dec_ring;

        /* Read packet from RX queues*/
        nb_rx = rte_eth_rx_burst(port_id, rx_queue_id, rx_pkts_burst,
                        MAX_PKT_BURST);
        if (!nb_rx)
                return;

        if (unlikely(rte_mempool_get_bulk(enc_out_pool, (void **)enc_out_pkts,
                        nb_rx) != 0)) {
                pktmbuf_free_bulk(rx_pkts_burst, nb_rx);
                lcore_stats->rx_lost_packets += nb_rx;
                return;
        }

        if (unlikely(rte_bbdev_enc_op_alloc_bulk(bbdev_op_pool, bbdev_ops_burst,
                        nb_rx) != 0)) {
                pktmbuf_free_bulk(enc_out_pkts, nb_rx);
                pktmbuf_free_bulk(rx_pkts_burst, nb_rx);
                lcore_stats->rx_lost_packets += nb_rx;
                return;
        }

        for (i = 0; i < nb_rx; i++) {
                char *data;
                const uint16_t pkt_data_len =
                                rte_pktmbuf_data_len(rx_pkts_burst[i]) -
                                sizeof(struct ether_hdr);
                /* save input mbuf pointer for later comparison */
                enc_out_pkts[i]->userdata = rx_pkts_burst[i];

                /* copy ethernet header */
                rte_pktmbuf_reset(enc_out_pkts[i]);
                data = rte_pktmbuf_append(enc_out_pkts[i],
                                sizeof(struct ether_hdr));
                if (data == NULL) {
                        printf(
                                "Not enough space for ethernet header in encoder output mbuf\n");
                        continue;
                }
                add_ether_hdr(rx_pkts_burst[i], enc_out_pkts[i]);

                /* set op */
                bbdev_ops_burst[i]->turbo_enc = def_op_enc;

                bbdev_ops_burst[i]->turbo_enc.input.data =
                                rx_pkts_burst[i];
                bbdev_ops_burst[i]->turbo_enc.input.offset =
                                sizeof(struct ether_hdr);
                /* Encoder will attach the CRC24B, adjust the length */
                bbdev_ops_burst[i]->turbo_enc.input.length = in_data_len;

                if (in_data_len < pkt_data_len)
                        rte_pktmbuf_trim(rx_pkts_burst[i], pkt_data_len -
                                        in_data_len);
                else if (in_data_len > pkt_data_len) {
                        data = rte_pktmbuf_append(rx_pkts_burst[i],
                                        in_data_len - pkt_data_len);
                        if (data == NULL)
                                printf(
                                        "Not enough storage in mbuf to perform the encoding\n");
                }

                bbdev_ops_burst[i]->turbo_enc.output.data =
                                enc_out_pkts[i];
                bbdev_ops_burst[i]->turbo_enc.output.offset =
                                sizeof(struct ether_hdr);
        }

        /* Enqueue packets on BBDevice */
        nb_enq = rte_bbdev_enqueue_enc_ops(bbdev_id, enc_queue_id,
                        bbdev_ops_burst, nb_rx);
        if (unlikely(nb_enq < nb_rx)) {
                pktmbuf_userdata_free_bulk(&enc_out_pkts[nb_enq],
                                nb_rx - nb_enq);
                rte_bbdev_enc_op_free_bulk(&bbdev_ops_burst[nb_enq],
                                nb_rx - nb_enq);
                lcore_stats->rx_lost_packets += nb_rx - nb_enq;

                if (!nb_enq)
                        return;
        }

        lcore_stats->enqueued += nb_enq;

        /* Dequeue packets from bbdev device*/
        nb_deq = 0;
        do {
                nb_deq += rte_bbdev_dequeue_enc_ops(bbdev_id, enc_queue_id,
                                &bbdev_ops_burst[nb_deq], nb_enq - nb_deq);
        } while (unlikely(nb_deq < nb_enq));

        lcore_stats->dequeued += nb_deq;

        /* Generate and add AWGN */
        add_awgn(enc_out_pkts, nb_deq);

        rte_bbdev_enc_op_free_bulk(bbdev_ops_burst, nb_deq);

        /* Enqueue packets to encoder-to-decoder ring */
        nb_sent = rte_ring_enqueue_burst(enc_to_dec_ring, (void **)enc_out_pkts,
                        nb_deq, NULL);
        if (unlikely(nb_sent < nb_deq)) {
                pktmbuf_userdata_free_bulk(&enc_out_pkts[nb_sent],
                                nb_deq - nb_sent);
                lcore_stats->enc_to_dec_lost_packets += nb_deq - nb_sent;
        }
}

static void
run_decoding(struct lcore_conf *lcore_conf)
{
        uint16_t i;
        uint16_t port_id, tx_queue_id;
        uint16_t bbdev_id, bbdev_queue_id;
        uint16_t nb_recv, nb_enq, nb_deq, nb_tx;
        uint8_t *llr_temp_buf;
        struct rte_mbuf *recv_pkts_burst[MAX_PKT_BURST];
        struct rte_bbdev_dec_op *bbdev_ops_burst[MAX_PKT_BURST];
        struct lcore_statistics *lcore_stats;
        struct rte_mempool *bbdev_op_pool;
        struct rte_ring *enc_to_dec_ring;

        lcore_stats = lcore_conf->lcore_stats;
        port_id = lcore_conf->port_id;
        tx_queue_id = lcore_conf->tx_queue_id;
        bbdev_id = lcore_conf->bbdev_id;
        bbdev_queue_id = lcore_conf->dec_queue_id;
        bbdev_op_pool = lcore_conf->bbdev_dec_op_pool;
        enc_to_dec_ring = lcore_conf->enc_to_dec_ring;
        llr_temp_buf = lcore_conf->llr_temp_buf;

        /* Dequeue packets from the ring */
        nb_recv = rte_ring_dequeue_burst(enc_to_dec_ring,
                        (void **)recv_pkts_burst, MAX_PKT_BURST, NULL);
        if (!nb_recv)
                return;

        if (unlikely(rte_bbdev_dec_op_alloc_bulk(bbdev_op_pool, bbdev_ops_burst,
                        nb_recv) != 0)) {
                pktmbuf_userdata_free_bulk(recv_pkts_burst, nb_recv);
                lcore_stats->rx_lost_packets += nb_recv;
                return;
        }

        transform_enc_out_dec_in(recv_pkts_burst, llr_temp_buf, nb_recv,
                        def_op_dec.cb_params.k);

        for (i = 0; i < nb_recv; i++) {
                /* set op */
                bbdev_ops_burst[i]->turbo_dec = def_op_dec;

                bbdev_ops_burst[i]->turbo_dec.input.data = recv_pkts_burst[i];
                bbdev_ops_burst[i]->turbo_dec.input.offset =
                                sizeof(struct ether_hdr);
                bbdev_ops_burst[i]->turbo_dec.input.length =
                                rte_pktmbuf_data_len(recv_pkts_burst[i])
                                - sizeof(struct ether_hdr);

                bbdev_ops_burst[i]->turbo_dec.hard_output.data =
                                recv_pkts_burst[i];
                bbdev_ops_burst[i]->turbo_dec.hard_output.offset =
                                sizeof(struct ether_hdr);
        }

        /* Enqueue packets on BBDevice */
        nb_enq = rte_bbdev_enqueue_dec_ops(bbdev_id, bbdev_queue_id,
                        bbdev_ops_burst, nb_recv);
        if (unlikely(nb_enq < nb_recv)) {
                pktmbuf_userdata_free_bulk(&recv_pkts_burst[nb_enq],
                                nb_recv - nb_enq);
                rte_bbdev_dec_op_free_bulk(&bbdev_ops_burst[nb_enq],
                                nb_recv - nb_enq);
                lcore_stats->rx_lost_packets += nb_recv - nb_enq;

                if (!nb_enq)
                        return;
        }

        lcore_stats->enqueued += nb_enq;

        /* Dequeue packets from BBDevice */
        nb_deq = 0;
        do {
                nb_deq += rte_bbdev_dequeue_dec_ops(bbdev_id, bbdev_queue_id,
                                &bbdev_ops_burst[nb_deq], nb_enq - nb_deq);
        } while (unlikely(nb_deq < nb_enq));

        lcore_stats->dequeued += nb_deq;

        rte_bbdev_dec_op_free_bulk(bbdev_ops_burst, nb_deq);

        verify_data(recv_pkts_burst, nb_deq);

        /* Free the RX mbufs after verification */
        for (i = 0; i < nb_deq; ++i)
                rte_pktmbuf_free(recv_pkts_burst[i]->userdata);

        /* Transmit the packets */
        nb_tx = rte_eth_tx_burst(port_id, tx_queue_id, recv_pkts_burst, nb_deq);
        if (unlikely(nb_tx < nb_deq)) {
                pktmbuf_userdata_free_bulk(&recv_pkts_burst[nb_tx],
                                nb_deq - nb_tx);
                lcore_stats->tx_lost_packets += nb_deq - nb_tx;
        }
}

static int
processing_loop(void *arg)
{
        struct lcore_conf *lcore_conf = arg;
        const bool run_encoder = (lcore_conf->core_type &
                        (1 << RTE_BBDEV_OP_TURBO_ENC));
        const bool run_decoder = (lcore_conf->core_type &
                        (1 << RTE_BBDEV_OP_TURBO_DEC));

        while (!rte_atomic16_read(&global_exit_flag)) {
                if (run_encoder)
                        run_encoding(lcore_conf);
                if (run_decoder)
                        run_decoding(lcore_conf);
        }

        return 0;
}

static int
prepare_bbdev_device(unsigned int dev_id, struct rte_bbdev_info *info,
                struct app_config_params *app_params)
{
        int ret;
        unsigned int q_id, dec_q_id, enc_q_id;
        struct rte_bbdev_queue_conf qconf = {0};
        uint16_t dec_qs_nb = app_params->num_dec_cores;
        uint16_t enc_qs_nb = app_params->num_enc_cores;
        uint16_t tot_qs = dec_qs_nb + enc_qs_nb;

        ret = rte_bbdev_setup_queues(dev_id, tot_qs, info->socket_id);
        if (ret < 0)
                rte_exit(EXIT_FAILURE,
                                "ERROR(%d): BBDEV %u not configured properly\n",
                                ret, dev_id);

        /* setup device DEC queues */
        qconf.socket = info->socket_id;
        qconf.queue_size = info->drv.queue_size_lim;
        qconf.op_type = RTE_BBDEV_OP_TURBO_DEC;

        for (q_id = 0, dec_q_id = 0; q_id < dec_qs_nb; q_id++) {
                ret = rte_bbdev_queue_configure(dev_id, q_id, &qconf);
                if (ret < 0)
                        rte_exit(EXIT_FAILURE,
                                        "ERROR(%d): BBDEV %u DEC queue %u not configured properly\n",
                                        ret, dev_id, q_id);
                app_params->dec_queue_ids[dec_q_id++] = q_id;
        }

        /* setup device ENC queues */
        qconf.op_type = RTE_BBDEV_OP_TURBO_ENC;

        for (q_id = dec_qs_nb, enc_q_id = 0; q_id < tot_qs; q_id++) {
                ret = rte_bbdev_queue_configure(dev_id, q_id, &qconf);
                if (ret < 0)
                        rte_exit(EXIT_FAILURE,
                                        "ERROR(%d): BBDEV %u ENC queue %u not configured properly\n",
                                        ret, dev_id, q_id);
                app_params->enc_queue_ids[enc_q_id++] = q_id;
        }

        ret = rte_bbdev_start(dev_id);

        if (ret != 0)
                rte_exit(EXIT_FAILURE, "ERROR(%d): BBDEV %u not started\n",
                        ret, dev_id);

        printf("BBdev %u started\n", dev_id);

        return 0;
}

static inline bool
check_matching_capabilities(uint64_t mask, uint64_t required_mask)
{
        return (mask & required_mask) == required_mask;
}

static void
enable_bbdev(struct app_config_params *app_params)
{
        struct rte_bbdev_info dev_info;
        const struct rte_bbdev_op_cap *op_cap;
        uint16_t bbdev_id = app_params->bbdev_id;
        bool encoder_capable = false;
        bool decoder_capable = false;

        rte_bbdev_info_get(bbdev_id, &dev_info);
        op_cap = dev_info.drv.capabilities;

        while (op_cap->type != RTE_BBDEV_OP_NONE) {
                if (op_cap->type == RTE_BBDEV_OP_TURBO_ENC) {
                        if (check_matching_capabilities(
                                        op_cap->cap.turbo_enc.capability_flags,
                                        def_op_enc.op_flags))
                                encoder_capable = true;
                }

                if (op_cap->type == RTE_BBDEV_OP_TURBO_DEC) {
                        if (check_matching_capabilities(
                                        op_cap->cap.turbo_dec.capability_flags,
                                        def_op_dec.op_flags))
                                decoder_capable = true;
                }

                op_cap++;
        }

        if (encoder_capable == false)
                rte_exit(EXIT_FAILURE,
                        "The specified BBDev %u doesn't have required encoder capabilities!\n",
                        bbdev_id);
        if (decoder_capable == false)
                rte_exit(EXIT_FAILURE,
                        "The specified BBDev %u doesn't have required decoder capabilities!\n",
                        bbdev_id);

        prepare_bbdev_device(bbdev_id, &dev_info, app_params);
}

int
main(int argc, char **argv)
{
        int ret;
        unsigned int nb_bbdevs, flags, lcore_id;
        void *sigret;
        struct app_config_params app_params = def_app_config;
        struct rte_mempool *ethdev_mbuf_mempool, *bbdev_mbuf_mempool;
        struct rte_mempool *bbdev_op_pools[RTE_BBDEV_OP_TYPE_COUNT];
        struct lcore_conf lcore_conf[RTE_MAX_LCORE] = { {0} };
        struct lcore_statistics lcore_stats[RTE_MAX_LCORE] = { {0} };
        struct stats_lcore_params stats_lcore;
        struct rte_ring *enc_to_dec_ring;
        bool stats_thread_started = false;
        unsigned int master_lcore_id = rte_get_master_lcore();

        rte_atomic16_init(&global_exit_flag);

        sigret = signal(SIGTERM, signal_handler);
        if (sigret == SIG_ERR)
                rte_exit(EXIT_FAILURE, "signal(%d, ...) failed", SIGTERM);

        sigret = signal(SIGINT, signal_handler);
        if (sigret == SIG_ERR)
                rte_exit(EXIT_FAILURE, "signal(%d, ...) failed", SIGINT);

        ret = rte_eal_init(argc, argv);
        if (ret < 0)
                rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");

        argc -= ret;
        argv += ret;

        /* parse application arguments (after the EAL ones) */
        ret = bbdev_parse_args(argc, argv, &app_params);
        if (ret < 0)
                rte_exit(EXIT_FAILURE, "Invalid BBDEV arguments\n");

        /*create bbdev op pools*/
        bbdev_op_pools[RTE_BBDEV_OP_TURBO_DEC] =
                        rte_bbdev_op_pool_create("bbdev_op_pool_dec",
                        RTE_BBDEV_OP_TURBO_DEC, NB_MBUF, 128, rte_socket_id());
        bbdev_op_pools[RTE_BBDEV_OP_TURBO_ENC] =
                        rte_bbdev_op_pool_create("bbdev_op_pool_enc",
                        RTE_BBDEV_OP_TURBO_ENC, NB_MBUF, 128, rte_socket_id());

        if ((bbdev_op_pools[RTE_BBDEV_OP_TURBO_DEC] == NULL) ||
                        (bbdev_op_pools[RTE_BBDEV_OP_TURBO_ENC] == NULL))
                rte_exit(EXIT_FAILURE, "Cannot create bbdev op pools\n");

        /* Create encoder to decoder ring */
        flags = (app_params.num_enc_cores == 1) ? RING_F_SP_ENQ : 0;
        if (app_params.num_dec_cores == 1)
                flags |= RING_F_SC_DEQ;

        enc_to_dec_ring = rte_ring_create("enc_to_dec_ring",
                rte_align32pow2(NB_MBUF), rte_socket_id(), flags);

        /* Get the number of available bbdev devices */
        nb_bbdevs = rte_bbdev_count();
        if (nb_bbdevs <= app_params.bbdev_id)
                rte_exit(EXIT_FAILURE,
                                "%u BBDevs detected, cannot use BBDev with ID %u!\n",
                                nb_bbdevs, app_params.bbdev_id);
        printf("Number of bbdevs detected: %d\n", nb_bbdevs);

        if (!rte_eth_dev_is_valid_port(app_params.port_id))
                rte_exit(EXIT_FAILURE,
                                "cannot use port with ID %u!\n",
                                app_params.port_id);

        /* create the mbuf mempool for ethdev pkts */
        ethdev_mbuf_mempool = rte_pktmbuf_pool_create("ethdev_mbuf_pool",
                        NB_MBUF, MEMPOOL_CACHE_SIZE, 0,
                        RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
        if (ethdev_mbuf_mempool == NULL)
                rte_exit(EXIT_FAILURE, "Cannot create ethdev mbuf mempool\n");

        /* create the mbuf mempool for encoder output */
        bbdev_mbuf_mempool = rte_pktmbuf_pool_create("bbdev_mbuf_pool",
                        NB_MBUF, MEMPOOL_CACHE_SIZE, 0,
                        RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
        if (bbdev_mbuf_mempool == NULL)
                rte_exit(EXIT_FAILURE, "Cannot create ethdev mbuf mempool\n");

        /* initialize ports */
        ret = initialize_ports(&app_params, ethdev_mbuf_mempool);

        /* Check if all requested lcores are available */
        for (lcore_id = 0; lcore_id < 8 * sizeof(uint64_t); ++lcore_id)
                if (((1ULL << lcore_id) & app_params.enc_core_mask) ||
                                ((1ULL << lcore_id) & app_params.dec_core_mask))
                        if (!rte_lcore_is_enabled(lcore_id))
                                rte_exit(EXIT_FAILURE,
                                                "Requested lcore_id %u is not enabled!\n",
                                                lcore_id);

        /* Start ethernet port */
        ret = rte_eth_dev_start(app_params.port_id);
        if (ret < 0)
                rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
                                ret, app_params.port_id);

        ret = check_port_link_status(app_params.port_id);
        if (ret < 0)
                exit(EXIT_FAILURE);

        /* start BBDevice and save BBDev queue IDs */
        enable_bbdev(&app_params);

        /* Initialize the port/queue configuration of each logical core */
        lcore_conf_init(&app_params, lcore_conf, bbdev_op_pools,
                        bbdev_mbuf_mempool, enc_to_dec_ring, lcore_stats);

        stats_lcore.app_params = &app_params;
        stats_lcore.lconf = lcore_conf;

        RTE_LCORE_FOREACH_SLAVE(lcore_id) {
                if (lcore_conf[lcore_id].core_type != 0)
                        /* launch per-lcore processing loop on slave lcores */
                        rte_eal_remote_launch(processing_loop,
                                        &lcore_conf[lcore_id], lcore_id);
                else if (!stats_thread_started) {
                        /* launch statistics printing loop */
                        rte_eal_remote_launch(stats_loop, &stats_lcore,
                                        lcore_id);
                        stats_thread_started = true;
                }
        }

        if (!stats_thread_started &&
                        lcore_conf[master_lcore_id].core_type != 0)
                rte_exit(EXIT_FAILURE,
                                "Not enough lcores to run the statistics printing loop!");
        else if (lcore_conf[master_lcore_id].core_type != 0)
                processing_loop(&lcore_conf[master_lcore_id]);
        else if (!stats_thread_started)
                stats_loop(&stats_lcore);

        RTE_LCORE_FOREACH_SLAVE(lcore_id) {
                ret |= rte_eal_wait_lcore(lcore_id);
        }

        return ret;
}