examples/l2fwd-macsec/main.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(C) 2023 Marvell.
 */

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

#include <rte_common.h>
#include <rte_log.h>
#include <rte_malloc.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_eal.h>
#include <rte_launch.h>
#include <rte_cycles.h>
#include <rte_prefetch.h>
#include <rte_lcore.h>
#include <rte_per_lcore.h>
#include <rte_branch_prediction.h>
#include <rte_interrupts.h>
#include <rte_random.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_security.h>
#include <rte_string_fns.h>

static volatile bool force_quit;

/* MAC updating enabled by default */
static int mac_updating;

/* Ports set in promiscuous mode on by default. */
static int promiscuous_on = 1;

#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1

#define MAX_PKT_BURST 32
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
#define MEMPOOL_CACHE_SIZE 256
#define SESSION_POOL_CACHE_SIZE 0

/* Configurable number of RX/TX ring descriptors */
#define RX_DESC_DEFAULT 1024
#define TX_DESC_DEFAULT 1024
static uint16_t nb_rxd = RX_DESC_DEFAULT;
static uint16_t nb_txd = TX_DESC_DEFAULT;

/* ethernet addresses of ports */
static struct rte_ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];

/* Ethernet header configuration for MACsec flow on each port. */
static struct rte_ether_hdr port_ether_hdr_config[RTE_MAX_ETHPORTS];

/* mask of enabled ports */
static uint32_t l2fwd_enabled_port_mask;

/* list of enabled ports */
static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];

struct __rte_cache_aligned port_pair_params {
#define NUM_PORTS   2
    uint16_t port[NUM_PORTS];
};

static struct port_pair_params port_pair_params_array[RTE_MAX_ETHPORTS / 2];
static struct port_pair_params *port_pair_params;
static uint16_t nb_port_pair_params;

static unsigned int l2fwd_rx_queue_per_lcore = 1;

#define MAX_RX_QUEUE_PER_LCORE 16
#define MAX_TX_QUEUE_PER_PORT 16
/* List of queues to be polled for a given lcore. 8< */
struct __rte_cache_aligned lcore_queue_conf {
    unsigned int n_rx_port;
    unsigned int rx_port_list[MAX_RX_QUEUE_PER_LCORE];
};
struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
/* >8 End of list of queues to be polled for a given lcore. */

static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];

static struct rte_eth_conf port_conf = {
    .txmode = {
        .mq_mode = RTE_ETH_MQ_TX_NONE,
    },
};

/* Mempools for mbuf and security session */
struct rte_mempool *l2fwd_pktmbuf_pool;

/* Per-port statistics struct */
struct __rte_cache_aligned l2fwd_port_statistics {
    uint64_t tx;
    uint64_t rx;
    uint64_t dropped;
};
struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];

#define MAX_TIMER_PERIOD 86400 /* 1 day max */
/* A tsc-based timer responsible for triggering statistics printout */
static uint64_t timer_period = 10; /* default period is 10 seconds */

#define MCS_MAX_KEY_LEN     32
#define MCS_SALT_LEN        12

struct l2fwd_key {
    uint8_t data[MCS_MAX_KEY_LEN];
    uint32_t len;
    rte_iova_t phys_addr;
};

struct l2fwd_macsec_options {
    unsigned int portmask;
    unsigned int tx_portmask;
    unsigned int rx_portmask;
    unsigned int nb_ports_per_lcore;
    unsigned int refresh_period;
    unsigned int single_lcore:1;
};

struct l2fwd_macsec_port_params {
    uint8_t dev_id;
    uint8_t qp_id;
    void *sec_ctx;
    struct rte_mempool *sess_pool;

    void *sess;
    uint16_t sa_id[4];
    uint16_t sc_id;
    struct rte_flow *tx_flow;
    struct rte_flow *rx_flow;

    enum rte_security_macsec_direction dir;
    enum rte_security_macsec_alg alg;
    struct l2fwd_key sa_key;
    uint8_t salt[MCS_SALT_LEN];

    uint8_t eth_hdr[RTE_ETHER_HDR_LEN];
    uint32_t ssci;
    uint64_t sci;
    uint64_t pn_threshold;
    uint32_t xpn;
    uint32_t next_pn;
    uint32_t mtu;
    uint8_t sectag_insert_mode;
    bool encrypt;
    bool protect_frames;
    bool replay_protect;
    int val_frames;
    uint32_t replay_win_sz;
    bool send_sci;
    bool end_station;
    bool scb;
    uint8_t an;
};
struct l2fwd_macsec_port_params mcs_port_params[RTE_MAX_ETHPORTS];

static void
mcs_stats_dump(uint16_t portid)
{
    struct rte_security_stats sess_stats = {0};
    struct rte_security_macsec_secy_stats *secy_stat;
    struct rte_security_macsec_sc_stats sc_stat = {0};

    if (mcs_port_params[portid].dir == RTE_SECURITY_MACSEC_DIR_RX) {
        printf("\n********* RX SECY STATS ************\n");
        rte_security_session_stats_get(mcs_port_params[portid].sec_ctx,
                mcs_port_params[portid].sess, &sess_stats);
        secy_stat = &sess_stats.macsec;

        if (secy_stat->ctl_pkt_bcast_cnt)
            printf("RX: ctl_pkt_bcast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->ctl_pkt_bcast_cnt);
        if (secy_stat->ctl_pkt_mcast_cnt)
            printf("RX: ctl_pkt_mcast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->ctl_pkt_mcast_cnt);
        if (secy_stat->ctl_pkt_ucast_cnt)
            printf("RX: ctl_pkt_ucast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->ctl_pkt_ucast_cnt);
        if (secy_stat->ctl_octet_cnt)
            printf("RX: ctl_octet_cnt: 0x%" PRIx64 "\n", secy_stat->ctl_octet_cnt);
        if (secy_stat->unctl_pkt_bcast_cnt)
            printf("RX: unctl_pkt_bcast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->unctl_pkt_bcast_cnt);
        if (secy_stat->unctl_pkt_mcast_cnt)
            printf("RX: unctl_pkt_mcast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->unctl_pkt_mcast_cnt);
        if (secy_stat->unctl_pkt_ucast_cnt)
            printf("RX: unctl_pkt_ucast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->unctl_pkt_ucast_cnt);
        if (secy_stat->unctl_octet_cnt)
            printf("RX: unctl_octet_cnt: 0x%" PRIx64 "\n", secy_stat->unctl_octet_cnt);
        /* Valid only for RX */
        if (secy_stat->octet_decrypted_cnt)
            printf("RX: octet_decrypted_cnt: 0x%" PRIx64 "\n",
                    secy_stat->octet_decrypted_cnt);
        if (secy_stat->octet_validated_cnt)
            printf("RX: octet_validated_cnt: 0x%" PRIx64 "\n",
                    secy_stat->octet_validated_cnt);
        if (secy_stat->pkt_port_disabled_cnt)
            printf("RX: pkt_port_disabled_cnt: 0x%" PRIx64 "\n",
                    secy_stat->pkt_port_disabled_cnt);
        if (secy_stat->pkt_badtag_cnt)
            printf("RX: pkt_badtag_cnt: 0x%" PRIx64 "\n", secy_stat->pkt_badtag_cnt);
        if (secy_stat->pkt_nosa_cnt)
            printf("RX: pkt_nosa_cnt: 0x%" PRIx64 "\n", secy_stat->pkt_nosa_cnt);
        if (secy_stat->pkt_nosaerror_cnt)
            printf("RX: pkt_nosaerror_cnt: 0x%" PRIx64 "\n",
                    secy_stat->pkt_nosaerror_cnt);
        if (secy_stat->pkt_tagged_ctl_cnt)
            printf("RX: pkt_tagged_ctl_cnt: 0x%" PRIx64 "\n",
                    secy_stat->pkt_tagged_ctl_cnt);
        if (secy_stat->pkt_untaged_cnt)
            printf("RX: pkt_untaged_cnt: 0x%" PRIx64 "\n", secy_stat->pkt_untaged_cnt);
        if (secy_stat->pkt_ctl_cnt)
            printf("RX: pkt_ctl_cnt: 0x%" PRIx64 "\n", secy_stat->pkt_ctl_cnt);
        if (secy_stat->pkt_notag_cnt)
            printf("RX: pkt_notag_cnt: 0x%" PRIx64 "\n", secy_stat->pkt_notag_cnt);
        printf("\n");
        printf("\n********** RX SC[%u] STATS **************\n",
                mcs_port_params[portid].sc_id);

        rte_security_macsec_sc_stats_get(mcs_port_params[portid].sec_ctx,
                mcs_port_params[portid].sc_id, RTE_SECURITY_MACSEC_DIR_RX,
                         &sc_stat);
        /* RX */
        if (sc_stat.hit_cnt)
            printf("RX hit_cnt: 0x%" PRIx64 "\n", sc_stat.hit_cnt);
        if (sc_stat.pkt_invalid_cnt)
            printf("RX pkt_invalid_cnt: 0x%" PRIx64 "\n", sc_stat.pkt_invalid_cnt);
        if (sc_stat.pkt_late_cnt)
            printf("RX pkt_late_cnt: 0x%" PRIx64 "\n", sc_stat.pkt_late_cnt);
        if (sc_stat.pkt_notvalid_cnt)
            printf("RX pkt_notvalid_cnt: 0x%" PRIx64 "\n", sc_stat.pkt_notvalid_cnt);
        if (sc_stat.pkt_unchecked_cnt)
            printf("RX pkt_unchecked_cnt: 0x%" PRIx64 "\n", sc_stat.pkt_unchecked_cnt);
        if (sc_stat.pkt_delay_cnt)
            printf("RX pkt_delay_cnt: 0x%" PRIx64 "\n", sc_stat.pkt_delay_cnt);
        if (sc_stat.pkt_ok_cnt)
            printf("RX pkt_ok_cnt: 0x%" PRIx64 "\n", sc_stat.pkt_ok_cnt);
        if (sc_stat.octet_decrypt_cnt)
            printf("RX octet_decrypt_cnt: 0x%" PRIx64 "\n", sc_stat.octet_decrypt_cnt);
        if (sc_stat.octet_validate_cnt)
            printf("RX octet_validate_cnt: 0x%" PRIx64 "\n",
                    sc_stat.octet_validate_cnt);
    }

    if (mcs_port_params[portid].dir == RTE_SECURITY_MACSEC_DIR_TX) {
        memset(&sess_stats, 0, sizeof(struct rte_security_stats));
        rte_security_session_stats_get(mcs_port_params[portid].sec_ctx,
                mcs_port_params[portid].sess, &sess_stats);
        secy_stat = &sess_stats.macsec;

        printf("\n********* TX SECY STATS ************\n");
        if (secy_stat->ctl_pkt_bcast_cnt)
            printf("TX: ctl_pkt_bcast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->ctl_pkt_bcast_cnt);
        if (secy_stat->ctl_pkt_mcast_cnt)
            printf("TX: ctl_pkt_mcast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->ctl_pkt_mcast_cnt);
        if (secy_stat->ctl_pkt_ucast_cnt)
            printf("TX: ctl_pkt_ucast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->ctl_pkt_ucast_cnt);
        if (secy_stat->ctl_octet_cnt)
            printf("TX: ctl_octet_cnt: 0x%" PRIx64 "\n", secy_stat->ctl_octet_cnt);
        if (secy_stat->unctl_pkt_bcast_cnt)
            printf("TX: unctl_pkt_bcast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->unctl_pkt_bcast_cnt);
        if (secy_stat->unctl_pkt_mcast_cnt)
            printf("TX: unctl_pkt_mcast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->unctl_pkt_mcast_cnt);
        if (secy_stat->unctl_pkt_ucast_cnt)
            printf("TX: unctl_pkt_ucast_cnt: 0x%" PRIx64 "\n",
                    secy_stat->unctl_pkt_ucast_cnt);
        if (secy_stat->unctl_octet_cnt)
            printf("TX: unctl_octet_cnt: 0x%" PRIx64 "\n",
                    secy_stat->unctl_octet_cnt);
        /* Valid only for TX */
        if (secy_stat->octet_encrypted_cnt)
            printf("TX: octet_encrypted_cnt: 0x%" PRIx64 "\n",
                    secy_stat->octet_encrypted_cnt);
        if (secy_stat->octet_protected_cnt)
            printf("TX: octet_protected_cnt: 0x%" PRIx64 "\n",
                    secy_stat->octet_protected_cnt);
        if (secy_stat->pkt_noactivesa_cnt)
            printf("TX: pkt_noactivesa_cnt: 0x%" PRIx64 "\n",
                    secy_stat->pkt_noactivesa_cnt);
        if (secy_stat->pkt_toolong_cnt)
            printf("TX: pkt_toolong_cnt: 0x%" PRIx64 "\n", secy_stat->pkt_toolong_cnt);
        if (secy_stat->pkt_untagged_cnt)
            printf("TX: pkt_untagged_cnt: 0x%" PRIx64 "\n",
                    secy_stat->pkt_untagged_cnt);


        memset(&sc_stat, 0, sizeof(struct rte_security_macsec_sc_stats));
        rte_security_macsec_sc_stats_get(mcs_port_params[portid].sec_ctx,
                mcs_port_params[portid].sc_id, RTE_SECURITY_MACSEC_DIR_TX,
                &sc_stat);
        printf("\n********** TX SC[%u] STATS **************\n",
                mcs_port_params[portid].sc_id);
        if (sc_stat.pkt_encrypt_cnt)
            printf("TX pkt_encrypt_cnt: 0x%" PRIx64 "\n", sc_stat.pkt_encrypt_cnt);
        if (sc_stat.pkt_protected_cnt)
            printf("TX pkt_protected_cnt: 0x%" PRIx64 "\n", sc_stat.pkt_protected_cnt);
        if (sc_stat.octet_encrypt_cnt)
            printf("TX octet_encrypt_cnt: 0x%" PRIx64 "\n", sc_stat.octet_encrypt_cnt);
    }
}

/* Print out statistics on packets dropped */
static void
print_stats(void)
{
    uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
    unsigned int portid;

    total_packets_dropped = 0;
    total_packets_tx = 0;
    total_packets_rx = 0;

    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("\nPort statistics ====================================");

    for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
        /* skip disabled ports */
        if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
            continue;
        printf("\nStatistics for port %u ------------------------------"
               "\nPackets sent: %24"PRIu64
               "\nPackets received: %20"PRIu64
               "\nPackets dropped: %21"PRIu64,
               portid,
               port_statistics[portid].tx,
               port_statistics[portid].rx,
               port_statistics[portid].dropped);

        total_packets_dropped += port_statistics[portid].dropped;
        total_packets_tx += port_statistics[portid].tx;
        total_packets_rx += port_statistics[portid].rx;

        mcs_stats_dump(portid);
    }
    printf("\nAggregate statistics ==============================="
           "\nTotal packets sent: %18"PRIu64
           "\nTotal packets received: %14"PRIu64
           "\nTotal packets dropped: %15"PRIu64,
           total_packets_tx,
           total_packets_rx,
           total_packets_dropped);
    printf("\n====================================================\n");

    fflush(stdout);
}

static void
l2fwd_mac_updating(struct rte_mbuf *m, unsigned int dest_portid)
{
    struct rte_ether_hdr *eth;
    void *tmp;

    eth = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);

    /* 02:00:00:00:00:xx */
    tmp = &eth->dst_addr.addr_bytes[0];
    *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40);

    /* src addr */
    rte_ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], &eth->src_addr);
}

static void
l2fwd_simple_forward(struct rte_mbuf *m, unsigned int portid)
{
    unsigned int dst_port;
    int sent;
    struct rte_eth_dev_tx_buffer *buffer;

    dst_port = l2fwd_dst_ports[portid];

    if (mac_updating)
        l2fwd_mac_updating(m, dst_port);

    buffer = tx_buffer[dst_port];
    sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
    if (sent)
        port_statistics[dst_port].tx += sent;
}

static void
fill_macsec_sa_conf(uint16_t portid, struct rte_security_macsec_sa *sa)
{
    sa->dir = mcs_port_params[portid].dir;

    sa->key.data = mcs_port_params[portid].sa_key.data;
    sa->key.length = mcs_port_params[portid].sa_key.len;

    memcpy((uint8_t *)sa->salt, (const uint8_t *)mcs_port_params[portid].salt,
        RTE_SECURITY_MACSEC_SALT_LEN);

    /* AN is set as per the value in secure packet in test vector */
    sa->an = mcs_port_params[portid].an & RTE_MACSEC_AN_MASK;

    sa->ssci = mcs_port_params[portid].ssci;
    sa->xpn = mcs_port_params[portid].xpn;
    /* Starting packet number which is expected to come next.
     * It is take from the test vector so that we can match the out packet.
     */
    sa->next_pn = mcs_port_params[portid].next_pn;
}

static void
fill_macsec_sc_conf(uint16_t portid, struct rte_security_macsec_sc *sc_conf)
{
    uint8_t i;

    sc_conf->dir = mcs_port_params[portid].dir;
    sc_conf->pn_threshold = mcs_port_params[portid].pn_threshold;
    if (sc_conf->dir == RTE_SECURITY_MACSEC_DIR_TX) {
        sc_conf->sc_tx.sa_id = mcs_port_params[portid].sa_id[0];
        if (mcs_port_params[portid].sa_id[1] != 0xFFFF) {
            sc_conf->sc_tx.sa_id_rekey = mcs_port_params[portid].sa_id[1];
            sc_conf->sc_tx.re_key_en = 1;
        }
        sc_conf->sc_tx.active = 1;
        sc_conf->sc_tx.sci = mcs_port_params[portid].sci;
        if (mcs_port_params[portid].alg == RTE_SECURITY_MACSEC_ALG_GCM_XPN_128 ||
                   mcs_port_params[portid].alg == RTE_SECURITY_MACSEC_ALG_GCM_XPN_256)
            sc_conf->sc_tx.is_xpn = 1;
    } else {
        for (i = 0; i < RTE_SECURITY_MACSEC_NUM_AN; i++) {
            if (mcs_port_params[portid].sa_id[i] != 0xFFFF) {
                sc_conf->sc_rx.sa_id[i] = mcs_port_params[portid].sa_id[i];
                sc_conf->sc_rx.sa_in_use[i] = 1;
            }
        }
        sc_conf->sc_rx.active = 1;
        if (mcs_port_params[portid].alg == RTE_SECURITY_MACSEC_ALG_GCM_XPN_128 ||
                   mcs_port_params[portid].alg == RTE_SECURITY_MACSEC_ALG_GCM_XPN_256)
            sc_conf->sc_rx.is_xpn = 1;
    }
}

/* Create Inline MACsec session */
static int
fill_session_conf(uint16_t portid, struct rte_security_session_conf *sess_conf)
{
    sess_conf->action_type = RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL;
    sess_conf->protocol = RTE_SECURITY_PROTOCOL_MACSEC;
    sess_conf->macsec.dir = mcs_port_params[portid].dir;
    sess_conf->macsec.alg = mcs_port_params[portid].alg;
    sess_conf->macsec.cipher_off = 0;
    sess_conf->macsec.sci = mcs_port_params[portid].sci;
    sess_conf->macsec.sc_id = mcs_port_params[portid].sc_id;
    if (mcs_port_params[portid].dir == RTE_SECURITY_MACSEC_DIR_TX) {
        sess_conf->macsec.tx_secy.mtu = mcs_port_params[portid].mtu;
        sess_conf->macsec.tx_secy.sectag_off =
            (mcs_port_params[portid].sectag_insert_mode == 1) ?
                    2 * RTE_ETHER_ADDR_LEN : RTE_VLAN_HLEN;
        sess_conf->macsec.tx_secy.sectag_insert_mode =
            mcs_port_params[portid].sectag_insert_mode;
        sess_conf->macsec.tx_secy.ctrl_port_enable = 1;
        sess_conf->macsec.tx_secy.sectag_version = 0;
        sess_conf->macsec.tx_secy.end_station = mcs_port_params[portid].end_station;
        sess_conf->macsec.tx_secy.send_sci = mcs_port_params[portid].send_sci;
        sess_conf->macsec.tx_secy.scb = mcs_port_params[portid].scb;
        sess_conf->macsec.tx_secy.encrypt = mcs_port_params[portid].encrypt;
        sess_conf->macsec.tx_secy.protect_frames = mcs_port_params[portid].protect_frames;
        sess_conf->macsec.tx_secy.icv_include_da_sa = 1;
    } else {
        sess_conf->macsec.rx_secy.replay_win_sz = mcs_port_params[portid].replay_win_sz;
        sess_conf->macsec.rx_secy.replay_protect = mcs_port_params[portid].replay_protect;
        sess_conf->macsec.rx_secy.icv_include_da_sa = 1;
        sess_conf->macsec.rx_secy.ctrl_port_enable = 1;
        sess_conf->macsec.rx_secy.preserve_sectag = 0;
        sess_conf->macsec.rx_secy.preserve_icv = 0;
        sess_conf->macsec.rx_secy.validate_frames = mcs_port_params[portid].val_frames;
    }

    return 0;
}

static int
create_default_flow(uint16_t portid)
{
    struct rte_flow_action action[2];
    struct rte_flow_item pattern[2];
    struct rte_flow_attr attr = {0};
    struct rte_flow_error err;
    struct rte_flow *flow;
    struct rte_flow_item_eth eth;
    static const struct rte_flow_item_eth eth_mask = {
        .hdr.dst_addr.addr_bytes = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
        .hdr.src_addr.addr_bytes = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
        .hdr.ether_type = RTE_BE16(0xFFFF),
    };
    int ret;

    eth.has_vlan = 0;
    memcpy(&eth.hdr, mcs_port_params[portid].eth_hdr, RTE_ETHER_HDR_LEN);

    printf("Creating flow on port %u with DST MAC address: " RTE_ETHER_ADDR_PRT_FMT
            ", SRC MAC address: "RTE_ETHER_ADDR_PRT_FMT"\n\n",
            portid,
            RTE_ETHER_ADDR_BYTES(&eth.hdr.dst_addr),
            RTE_ETHER_ADDR_BYTES(&eth.hdr.src_addr));

    pattern[0].type = RTE_FLOW_ITEM_TYPE_ETH;
    pattern[0].spec = &eth;
    pattern[0].mask = &eth_mask;
    pattern[0].last = NULL;
    pattern[1].type = RTE_FLOW_ITEM_TYPE_END;

    action[0].type = RTE_FLOW_ACTION_TYPE_SECURITY;
    action[0].conf = mcs_port_params[portid].sess;
    action[1].type = RTE_FLOW_ACTION_TYPE_END;
    action[1].conf = NULL;

    attr.ingress = (mcs_port_params[portid].dir == RTE_SECURITY_MACSEC_DIR_RX) ? 1 : 0;
    attr.egress = (mcs_port_params[portid].dir == RTE_SECURITY_MACSEC_DIR_TX) ? 1 : 0;

    ret = rte_flow_validate(portid, &attr, pattern, action, &err);
    if (ret) {
        printf("\nValidate flow failed, ret = %d\n", ret);
        return -1;
    }
    flow = rte_flow_create(portid, &attr, pattern, action, &err);
    if (flow == NULL) {
        printf("\nDefault flow rule create failed\n");
        return -1;
    }

    if (mcs_port_params[portid].dir == RTE_SECURITY_MACSEC_DIR_TX)
        mcs_port_params[portid].tx_flow = flow;
    else
        mcs_port_params[portid].rx_flow = flow;

    return 0;
}

static void
destroy_default_flow(uint16_t portid)
{
    struct rte_flow_error err;
    int ret;

    if (mcs_port_params[portid].tx_flow) {
        ret = rte_flow_destroy(portid, mcs_port_params[portid].tx_flow, &err);
        if (ret) {
            printf("\nDefault Tx flow rule destroy failed\n");
            return;
        }
        mcs_port_params[portid].tx_flow = NULL;
    }
    if (mcs_port_params[portid].rx_flow) {
        ret = rte_flow_destroy(portid, mcs_port_params[portid].rx_flow, &err);
        if (ret) {
            printf("\nDefault Rx flow rule destroy failed\n");
            return;
        }
        mcs_port_params[portid].rx_flow = NULL;
    }
}

static void
clean_macsec_resources(uint16_t portid)
{
    uint8_t an;

    destroy_default_flow(portid);
    rte_security_session_destroy(mcs_port_params[portid].sec_ctx,
                mcs_port_params[portid].sess);
    rte_security_macsec_sc_destroy(mcs_port_params[portid].sec_ctx,
                mcs_port_params[portid].sc_id,
                mcs_port_params[portid].dir);
    for (an = 0; an < RTE_SECURITY_MACSEC_NUM_AN; an++) {
        if (mcs_port_params[portid].sa_id[an] != 0xFFFF)
            rte_security_macsec_sa_destroy(mcs_port_params[portid].sec_ctx,
                mcs_port_params[portid].sa_id[an],
                mcs_port_params[portid].dir);
    }
}

static int
initialize_macsec_session(uint8_t portid)
{
    struct rte_security_session_conf sess_conf = {0};
    struct rte_security_macsec_sa sa_conf = {0};
    struct rte_security_macsec_sc sc_conf = {0};
    int id, ret;

    /* Create MACsec SA. */
    fill_macsec_sa_conf(portid, &sa_conf);
    id = rte_security_macsec_sa_create(mcs_port_params[portid].sec_ctx, &sa_conf);
    if (id < 0) {
        printf("MACsec SA create failed : %d.\n", id);
        return -1;
    }
    mcs_port_params[portid].sa_id[0] = (uint16_t)id;
    mcs_port_params[portid].sa_id[1] = 0xFFFF;
    mcs_port_params[portid].sa_id[2] = 0xFFFF;
    mcs_port_params[portid].sa_id[3] = 0xFFFF;

    printf("\nsa_id %d created.\n", mcs_port_params[portid].sa_id[0]);

    /* Create MACsec SC. */
    fill_macsec_sc_conf(portid, &sc_conf);
    id = rte_security_macsec_sc_create(mcs_port_params[portid].sec_ctx, &sc_conf);
    if (id < 0) {
        printf("MACsec SC create failed : %d.\n", id);
        goto out;
    }
    mcs_port_params[portid].sc_id = (uint16_t)id;
    printf("\nsc_id %d created.\n", mcs_port_params[portid].sc_id);

    /* Create Inline MACsec session. */
    ret = fill_session_conf(portid, &sess_conf);
    if (ret) {
        printf("MACsec Session conf failed.\n");
        goto out;
    }
    mcs_port_params[portid].sess =
        rte_security_session_create(mcs_port_params[portid].sec_ctx,
                &sess_conf, mcs_port_params[portid].sess_pool);
    if (mcs_port_params[portid].sess == NULL) {
        printf("MACSEC Session init failed errno: %d.\n", rte_errno);
        goto out;
    }

    /* Create MACsec flow. */
    ret = create_default_flow(portid);
    if (ret)
        goto out;

    return 0;
out:
    clean_macsec_resources(portid);
    return -1;
}

/* main processing loop */
static void
l2fwd_main_loop(void)
{
    struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
    struct rte_mbuf *m;
    int sent;
    unsigned int lcore_id;
    uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
    unsigned int i, j, portid, nb_rx;
    struct lcore_queue_conf *qconf;
    const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
            BURST_TX_DRAIN_US;
    struct rte_eth_dev_tx_buffer *buffer;

    prev_tsc = 0;
    timer_tsc = 0;

    lcore_id = rte_lcore_id();
    qconf = &lcore_queue_conf[lcore_id];

    if (qconf->n_rx_port == 0) {
        RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
        return;
    }

    RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);

    for (i = 0; i < qconf->n_rx_port; i++) {

        portid = qconf->rx_port_list[i];

        RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
            portid);
    }

    while (!force_quit) {

        /* Drains TX queue in its main loop. 8< */
        cur_tsc = rte_rdtsc();

        /*
         * TX burst queue drain
         */
        diff_tsc = cur_tsc - prev_tsc;
        if (unlikely(diff_tsc > drain_tsc)) {

            for (i = 0; i < qconf->n_rx_port; i++) {

                portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
                buffer = tx_buffer[portid];

                sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
                if (sent)
                    port_statistics[portid].tx += sent;

            }

            /* if timer is enabled */
            if (timer_period > 0) {

                /* advance the timer */
                timer_tsc += diff_tsc;

                /* if timer has reached its timeout */
                if (unlikely(timer_tsc >= timer_period)) {

                    /* do this only on main core */
                    if (lcore_id == rte_get_main_lcore()) {
                        print_stats();
                        /* reset the timer */
                        timer_tsc = 0;
                    }
                }
            }

            prev_tsc = cur_tsc;
        }
        /* >8 End of draining TX queue. */

        /* Read packet from RX queues. 8< */
        for (i = 0; i < qconf->n_rx_port; i++) {

            portid = qconf->rx_port_list[i];
            nb_rx = rte_eth_rx_burst(portid, 0,
                         pkts_burst, MAX_PKT_BURST);

            if (unlikely(nb_rx == 0))
                continue;

            port_statistics[portid].rx += nb_rx;

            for (j = 0; j < nb_rx; j++) {
                m = pkts_burst[j];
                rte_prefetch0(rte_pktmbuf_mtod(m, void *));
                l2fwd_simple_forward(m, portid);
            }
        }
        /* >8 End of read packet from RX queues. */
    }
    if (force_quit) {
        for (i = 0; i < qconf->n_rx_port; i++) {
            portid = qconf->rx_port_list[i];
            clean_macsec_resources(portid);
        }
    }
}
static int
l2fwd_launch_one_lcore(__rte_unused void *arg)
{
    l2fwd_main_loop();
    return 0;
}

/* display usage */
static void
l2fwd_usage(const char *prgname)
{
    printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
           "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
           "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
           "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
           "  --mcs-tx-portmask: Hexadecimal bitmask for MACsec Tx(Encap) ports\n"
           "  --mcs-rx-portmask: Hexadecimal bitmask for MACsec Rx(Decap) ports\n"
           "  --mcs-port-config '(<port>,<src-mac>,<dst-mac>)'\n"
           "  --portmap: Configure forwarding port pair mapping\n"
           "          Default: alternate port pairs\n\n",
           prgname);
}

static int
l2fwd_parse_portmask(const char *portmask)
{
    char *end = NULL;
    unsigned long pm;

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

    return pm;
}

static int
l2fwd_parse_port_pair_config(const char *q_arg)
{
    enum fieldnames {
        FLD_PORT1 = 0,
        FLD_PORT2,
        _NUM_FLD
    };
    unsigned long int_fld[_NUM_FLD];
    const char *p, *p0 = q_arg;
    char *str_fld[_NUM_FLD];
    unsigned int size;
    char s[256];
    char *end;
    int i;

    nb_port_pair_params = 0;

    while ((p = strchr(p0, '(')) != NULL) {
        ++p;
        p0 = strchr(p, ')');
        if (p0 == NULL)
            return -1;

        size = p0 - p;
        if (size >= sizeof(s))
            return -1;

        memcpy(s, p, size);
        s[size] = '\0';
        if (rte_strsplit(s, sizeof(s), str_fld,
                 _NUM_FLD, ',') != _NUM_FLD)
            return -1;
        for (i = 0; i < _NUM_FLD; i++) {
            errno = 0;
            int_fld[i] = strtoul(str_fld[i], &end, 0);
            if (errno != 0 || end == str_fld[i] ||
                int_fld[i] >= RTE_MAX_ETHPORTS)
                return -1;
        }
        if (nb_port_pair_params >= RTE_MAX_ETHPORTS/2) {
            printf("exceeded max number of port pair params: %hu\n",
                nb_port_pair_params);
            return -1;
        }
        port_pair_params_array[nb_port_pair_params].port[0] =
                (uint16_t)int_fld[FLD_PORT1];
        port_pair_params_array[nb_port_pair_params].port[1] =
                (uint16_t)int_fld[FLD_PORT2];
        ++nb_port_pair_params;
    }
    port_pair_params = port_pair_params_array;
    return 0;
}

static int
l2fwd_parse_macsec_port_config(const char *q_arg)
{
    enum fieldnames {
        FLD_PORT = 0,
        FLD_SRC,
        FLD_DST,
        _NUM_FLD
    };
    unsigned int portid;
    struct rte_ether_addr src, dst;
    const char *p, *p0 = q_arg;
    char *str_fld[_NUM_FLD];
    unsigned int size;
    char s[256];
    char *end;

    nb_port_pair_params = 0;

    while ((p = strchr(p0, '(')) != NULL) {
        ++p;
        p0 = strchr(p, ')');
        if (p0 == NULL)
            return -1;

        size = p0 - p;
        if (size >= sizeof(s))
            return -1;

        memcpy(s, p, size);
        s[size] = '\0';
        if (rte_strsplit(s, sizeof(s), str_fld,
                 _NUM_FLD, ',') != _NUM_FLD)
            return -1;
        errno = 0;
        portid = strtoul(str_fld[FLD_PORT], &end, 0);
        if (errno != 0 || end == str_fld[FLD_PORT] || portid >= RTE_MAX_ETHPORTS)
            return -1;
        if (port_ether_hdr_config[portid].ether_type == 0x0800) {
            printf("MACsec src-dst MAC addr already parsed for port: %d\n",
                    portid);
            return -1;
        }
        if (rte_ether_unformat_addr(str_fld[FLD_SRC], &src) ||
                rte_ether_unformat_addr(str_fld[FLD_DST], &dst))
            return -1;

        memcpy(&port_ether_hdr_config[portid].src_addr, &src, sizeof(src));
        memcpy(&port_ether_hdr_config[portid].dst_addr, &dst, sizeof(dst));
        port_ether_hdr_config[portid].ether_type = 0x0800;
    }

    return 0;
}


static unsigned int
l2fwd_parse_nqueue(const char *q_arg)
{
    char *end = NULL;
    unsigned long n;

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

    return n;
}

static int
l2fwd_parse_timer_period(const char *q_arg)
{
    char *end = NULL;
    int n;

    /* parse number string */
    n = strtol(q_arg, &end, 10);
    if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
        return -1;
    if (n >= MAX_TIMER_PERIOD)
        return -1;

    return n;
}

static const char short_options[] =
    "p:"  /* portmask */
    "P"   /* promiscuous */
    "q:"  /* number of queues */
    "T:"  /* timer period */
    ;

#define CMD_LINE_OPT_NO_MAC_UPDATING    "no-mac-updating"
#define CMD_LINE_OPT_PORTMAP_CONFIG "portmap"
#define CMD_LINE_OPT_MACSEC_TX_PORTMASK "mcs-tx-portmask"
#define CMD_LINE_OPT_MACSEC_RX_PORTMASK "mcs-rx-portmask"
#define CMD_LINE_OPT_MACSEC_PORT_CONFIG "mcs-port-config"

enum {
    /* Long options mapped to a short option.
     * First long only option value must be >= 256,
     * so that we won't conflict with short options.
     */
    CMD_LINE_OPT_NO_MAC_UPDATING_NUM = 256,
    CMD_LINE_OPT_PORTMAP_NUM,
    CMD_LINE_OPT_MACSEC_TX_PORTMASK_NUM,
    CMD_LINE_OPT_MACSEC_RX_PORTMASK_NUM,
    CMD_LINE_OPT_MACSEC_PORT_CFG_NUM,
};

static const struct option lgopts[] = {
    { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, 0,
        CMD_LINE_OPT_NO_MAC_UPDATING_NUM},
    { CMD_LINE_OPT_PORTMAP_CONFIG, 1, 0, CMD_LINE_OPT_PORTMAP_NUM},
    { CMD_LINE_OPT_MACSEC_TX_PORTMASK, required_argument, 0,
        CMD_LINE_OPT_MACSEC_TX_PORTMASK_NUM},
    { CMD_LINE_OPT_MACSEC_RX_PORTMASK, required_argument, 0,
        CMD_LINE_OPT_MACSEC_RX_PORTMASK_NUM},
    { CMD_LINE_OPT_MACSEC_PORT_CONFIG, 1, 0, CMD_LINE_OPT_MACSEC_PORT_CFG_NUM},
    {NULL, 0, 0, 0}
};

static void
l2fwd_macsec_default_options(struct l2fwd_macsec_options *options)
{
    uint16_t portid;
    uint8_t salt[MCS_SALT_LEN] = {0};
    uint8_t key[16] = {
            0x07, 0x1B, 0x11, 0x3B, 0x0C, 0xA7, 0x43, 0xFE,
            0xCC, 0xCF, 0x3D, 0x05, 0x1F, 0x73, 0x73, 0x82
        };

    options->portmask = 0xffffffff;
    options->nb_ports_per_lcore = 1;
    options->single_lcore = 0;

    RTE_ETH_FOREACH_DEV(portid) {
        if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
            continue;
        if ((options->tx_portmask & (1 << portid)) != 0)
            mcs_port_params[portid].dir = RTE_SECURITY_MACSEC_DIR_TX;

        if ((options->rx_portmask & (1 << portid)) != 0)
            mcs_port_params[portid].dir = RTE_SECURITY_MACSEC_DIR_RX;

        mcs_port_params[portid].alg = RTE_SECURITY_MACSEC_ALG_GCM_XPN_128;
        memcpy(mcs_port_params[portid].sa_key.data, key, 16);
        mcs_port_params[portid].sa_key.len = 16;
        memcpy(mcs_port_params[portid].salt, salt, MCS_SALT_LEN);

        memcpy(mcs_port_params[portid].eth_hdr, &port_ether_hdr_config[portid],
                RTE_ETHER_HDR_LEN);

        mcs_port_params[portid].ssci = 0;
        mcs_port_params[portid].pn_threshold = 0xffffffffffffffff;
        mcs_port_params[portid].xpn = 0;
        mcs_port_params[portid].next_pn = 1;
        mcs_port_params[portid].mtu = 1500;
        mcs_port_params[portid].sectag_insert_mode = 1;
        mcs_port_params[portid].encrypt = true;
        mcs_port_params[portid].protect_frames = true;
        mcs_port_params[portid].replay_protect = false;
        mcs_port_params[portid].val_frames = RTE_SECURITY_MACSEC_VALIDATE_STRICT;
        mcs_port_params[portid].send_sci = true;
        mcs_port_params[portid].end_station = false;
        mcs_port_params[portid].scb = false;
    }
}

/* Parse the argument given in the command line of the application */
static int
l2fwd_parse_args(struct l2fwd_macsec_options *options,
        int argc, char **argv)
{
    int opt, ret, timer_secs;
    char **argvopt;
    int option_index;
    char *prgname = argv[0];

    argvopt = argv;
    port_pair_params = NULL;

    while ((opt = getopt_long(argc, argvopt, short_options,
                  lgopts, &option_index)) != EOF) {

        switch (opt) {
        /* portmask */
        case 'p':
            l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
            if (l2fwd_enabled_port_mask == 0) {
                printf("invalid portmask\n");
                l2fwd_usage(prgname);
                return -1;
            }
            break;
        case 'P':
            promiscuous_on = 1;
            break;

        /* nqueue */
        case 'q':
            l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
            if (l2fwd_rx_queue_per_lcore == 0) {
                printf("invalid queue number\n");
                l2fwd_usage(prgname);
                return -1;
            }
            break;

        /* timer period */
        case 'T':
            timer_secs = l2fwd_parse_timer_period(optarg);
            if (timer_secs < 0) {
                printf("invalid timer period\n");
                l2fwd_usage(prgname);
                return -1;
            }
            timer_period = timer_secs;
            break;

        /* long options */
        case CMD_LINE_OPT_PORTMAP_NUM:
            ret = l2fwd_parse_port_pair_config(optarg);
            if (ret) {
                fprintf(stderr, "Invalid config\n");
                l2fwd_usage(prgname);
                return -1;
            }
            break;

        case CMD_LINE_OPT_NO_MAC_UPDATING_NUM:
            mac_updating = 0;
            break;

        case CMD_LINE_OPT_MACSEC_TX_PORTMASK_NUM:
            options->tx_portmask = l2fwd_parse_portmask(optarg);
            if (options->tx_portmask == 0) {
                l2fwd_usage(prgname);
                return -1;
            }
            break;

        case CMD_LINE_OPT_MACSEC_RX_PORTMASK_NUM:
            options->rx_portmask = l2fwd_parse_portmask(optarg);
            if (options->rx_portmask == 0) {
                l2fwd_usage(prgname);
                return -1;
            }
            break;

        case CMD_LINE_OPT_MACSEC_PORT_CFG_NUM:
            ret = l2fwd_parse_macsec_port_config(optarg);
            if (ret) {
                fprintf(stderr, "Invalid MACsec port config\n");
                l2fwd_usage(prgname);
                return -1;
            }
            break;

        default:
            l2fwd_usage(prgname);
            return -1;
        }
    }
    l2fwd_macsec_default_options(options);

    if (optind >= 0)
        argv[optind-1] = prgname;

    ret = optind-1;
    optind = 1; /* reset getopt lib */
    return ret;
}

/*
 * Check port pair config with enabled port mask,
 * and for valid port pair combinations.
 */
static int
check_port_pair_config(void)
{
    uint32_t port_pair_config_mask = 0;
    uint32_t port_pair_mask = 0;
    uint16_t index, i, portid;

    for (index = 0; index < nb_port_pair_params; index++) {
        port_pair_mask = 0;

        for (i = 0; i < NUM_PORTS; i++)  {
            portid = port_pair_params[index].port[i];
            if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
                printf("port %u is not enabled in port mask\n",
                       portid);
                return -1;
            }
            if (!rte_eth_dev_is_valid_port(portid)) {
                printf("port %u is not present on the board\n",
                       portid);
                return -1;
            }

            port_pair_mask |= 1 << portid;
        }

        if (port_pair_config_mask & port_pair_mask) {
            printf("port %u is used in other port pairs\n", portid);
            return -1;
        }
        port_pair_config_mask |= port_pair_mask;
    }

    l2fwd_enabled_port_mask &= port_pair_config_mask;

    return 0;
}

/* Check the link status of all ports in up to 9s, and print them finally */
static void
check_all_ports_link_status(uint32_t port_mask)
{
#define CHECK_INTERVAL 100 /* 100ms */
#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
    uint16_t portid;
    uint8_t count, all_ports_up, print_flag = 0;
    struct rte_eth_link link;
    int ret;
    char link_status_text[RTE_ETH_LINK_MAX_STR_LEN];

    printf("\nChecking link status");
    fflush(stdout);
    for (count = 0; count <= MAX_CHECK_TIME; count++) {
        if (force_quit)
            return;
        all_ports_up = 1;
        RTE_ETH_FOREACH_DEV(portid) {
            if (force_quit)
                return;
            if ((port_mask & (1 << portid)) == 0)
                continue;
            memset(&link, 0, sizeof(link));
            ret = rte_eth_link_get_nowait(portid, &link);
            if (ret < 0) {
                all_ports_up = 0;
                if (print_flag == 1)
                    printf("Port %u link get failed: %s\n",
                        portid, rte_strerror(-ret));
                continue;
            }
            /* print link status if flag set */
            if (print_flag == 1) {
                rte_eth_link_to_str(link_status_text,
                    sizeof(link_status_text), &link);
                printf("Port %d %s\n", portid,
                       link_status_text);
                continue;
            }
            /* clear all_ports_up flag if any link down */
            if (link.link_status == RTE_ETH_LINK_DOWN) {
                all_ports_up = 0;
                break;
            }
        }
        /* after finally printing all link status, get out */
        if (print_flag == 1)
            break;

        if (all_ports_up == 0) {
            printf(".");
            fflush(stdout);
            rte_delay_ms(CHECK_INTERVAL);
        }

        /* set the print_flag if all ports up or timeout */
        if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
            print_flag = 1;
            printf("done\n");
        }
    }
}

static void
signal_handler(int signum)
{
    if (signum == SIGINT || signum == SIGTERM) {
        printf("\n\nSignal %d received, preparing to exit...\n",
                signum);
        force_quit = true;
    }
}

int
main(int argc, char **argv)
{
    struct l2fwd_macsec_options options = {0};
    struct lcore_queue_conf *qconf;
    int ret;
    uint16_t nb_ports;
    uint16_t nb_ports_available = 0;
    uint16_t portid, last_port;
    unsigned int lcore_id, rx_lcore_id;
    unsigned int nb_ports_in_mask = 0;
    unsigned int nb_lcores = 0;
    unsigned int nb_mbufs;
    uint16_t nb_sess = 512;
    uint32_t sess_sz;
    char s[64];

    /* Init EAL. 8< */
    ret = rte_eal_init(argc, argv);
    if (ret < 0)
        rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
    argc -= ret;
    argv += ret;

    force_quit = false;
    signal(SIGINT, signal_handler);
    signal(SIGTERM, signal_handler);

    /* parse application arguments (after the EAL ones) */
    ret = l2fwd_parse_args(&options, argc, argv);
    if (ret < 0)
        rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
    /* >8 End of init EAL. */

    printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");

    /* convert to number of cycles */
    timer_period *= rte_get_timer_hz();

    nb_ports = rte_eth_dev_count_avail();
    if (nb_ports == 0)
        rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");

    if (port_pair_params != NULL) {
        if (check_port_pair_config() < 0)
            rte_exit(EXIT_FAILURE, "Invalid port pair config\n");
    }

    /* check port mask to possible port mask */
    if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1))
        rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n",
            (1 << nb_ports) - 1);

    /* Initialization of the driver. 8< */

    /* reset l2fwd_dst_ports */
    for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
        l2fwd_dst_ports[portid] = 0;
    last_port = 0;

    /* populate destination port details */
    if (port_pair_params != NULL) {
        uint16_t idx, p;

        for (idx = 0; idx < (nb_port_pair_params << 1); idx++) {
            p = idx & 1;
            portid = port_pair_params[idx >> 1].port[p];
            l2fwd_dst_ports[portid] =
                port_pair_params[idx >> 1].port[p ^ 1];
        }
    } else {
        RTE_ETH_FOREACH_DEV(portid) {
            /* skip ports that are not enabled */
            if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
                continue;

            if (nb_ports_in_mask % 2) {
                l2fwd_dst_ports[portid] = last_port;
                l2fwd_dst_ports[last_port] = portid;
            } else {
                last_port = portid;
            }

            nb_ports_in_mask++;
        }
        if (nb_ports_in_mask % 2) {
            printf("Notice: odd number of ports in portmask.\n");
            l2fwd_dst_ports[last_port] = last_port;
        }
    }
    /* >8 End of initialization of the driver. */

    rx_lcore_id = 0;
    qconf = NULL;

    /* Initialize the port/queue configuration of each logical core */
    RTE_ETH_FOREACH_DEV(portid) {
        /* skip ports that are not enabled */
        if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
            continue;

        /* get the lcore_id for this port */
        while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
               lcore_queue_conf[rx_lcore_id].n_rx_port ==
               l2fwd_rx_queue_per_lcore) {
            rx_lcore_id++;
            if (rx_lcore_id >= RTE_MAX_LCORE)
                rte_exit(EXIT_FAILURE, "Not enough cores\n");
        }

        if (qconf != &lcore_queue_conf[rx_lcore_id]) {
            /* Assigned a new logical core in the loop above. */
            qconf = &lcore_queue_conf[rx_lcore_id];
            nb_lcores++;
        }

        qconf->rx_port_list[qconf->n_rx_port] = portid;
        qconf->n_rx_port++;
        printf("Lcore %u: RX port %u TX port %u\n", rx_lcore_id,
               portid, l2fwd_dst_ports[portid]);
    }

    nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST +
        nb_lcores * MEMPOOL_CACHE_SIZE), 8192U);

    /* Create the mbuf pool. 8< */
    l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs,
        MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
        rte_socket_id());
    if (l2fwd_pktmbuf_pool == NULL)
        rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
    /* >8 End of create the mbuf pool. */

    /* Initialise each port */
    RTE_ETH_FOREACH_DEV(portid) {
        struct rte_eth_rxconf rxq_conf;
        struct rte_eth_txconf txq_conf;
        struct rte_eth_conf local_port_conf = port_conf;
        struct rte_eth_dev_info dev_info;

        /* skip ports that are not enabled */
        if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
            printf("Skipping disabled port %u\n", portid);
            continue;
        }
        nb_ports_available++;

        /* init port */
        printf("Initializing port %u... ", portid);
        fflush(stdout);

        ret = rte_eth_dev_info_get(portid, &dev_info);
        if (ret != 0)
            rte_exit(EXIT_FAILURE,
                "Error during getting device (port %u) info: %s\n",
                portid, strerror(-ret));

        if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE)
            local_port_conf.txmode.offloads |=
                RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
        /* Configure the number of queues for a port. */
        ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
                  ret, portid);
        /* >8 End of configuration of the number of queues for a port. */

        ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
                               &nb_txd);
        if (ret < 0)
            rte_exit(EXIT_FAILURE,
                 "Cannot adjust number of descriptors: err=%d, port=%u\n",
                 ret, portid);

        ret = rte_eth_macaddr_get(portid,
                      &l2fwd_ports_eth_addr[portid]);
        if (ret < 0)
            rte_exit(EXIT_FAILURE,
                 "Cannot get MAC address: err=%d, port=%u\n",
                 ret, portid);

        /* init one RX queue */
        fflush(stdout);
        rxq_conf = dev_info.default_rxconf;
        rxq_conf.offloads = local_port_conf.rxmode.offloads;
        /* RX queue setup. 8< */
        ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
                         rte_eth_dev_socket_id(portid),
                         &rxq_conf,
                         l2fwd_pktmbuf_pool);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
                  ret, portid);
        /* >8 End of RX queue setup. */

        /* Init one TX queue on each port. 8< */
        fflush(stdout);
        txq_conf = dev_info.default_txconf;
        txq_conf.offloads = local_port_conf.txmode.offloads;
        ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
                rte_eth_dev_socket_id(portid),
                &txq_conf);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
                ret, portid);
        /* >8 End of init one TX queue on each port. */

        /* Initialize TX buffers */
        tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
                RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
                rte_eth_dev_socket_id(portid));
        if (tx_buffer[portid] == NULL)
            rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
                    portid);

        rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);

        ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
                rte_eth_tx_buffer_count_callback,
                &port_statistics[portid].dropped);
        if (ret < 0)
            rte_exit(EXIT_FAILURE,
            "Cannot set error callback for tx buffer on port %u\n",
                 portid);

        ret = rte_eth_dev_set_ptypes(portid, RTE_PTYPE_UNKNOWN, NULL,
                         0);
        if (ret < 0)
            printf("Port %u, Failed to disable Ptype parsing\n",
                    portid);
        /* Start device */
        ret = rte_eth_dev_start(portid);
        if (ret < 0)
            rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
                  ret, portid);

        printf("done:\n");
        if (promiscuous_on) {
            ret = rte_eth_promiscuous_enable(portid);
            if (ret != 0)
                rte_exit(EXIT_FAILURE,
                    "rte_eth_promiscuous_enable:err=%s, port=%u\n",
                    rte_strerror(-ret), portid);
        }

        printf("Port %u, MAC address: " RTE_ETHER_ADDR_PRT_FMT "\n\n",
            portid,
            RTE_ETHER_ADDR_BYTES(&l2fwd_ports_eth_addr[portid]));

        /* initialize port stats */
        memset(&port_statistics, 0, sizeof(port_statistics));

        mcs_port_params[portid].sec_ctx = rte_eth_dev_get_sec_ctx(portid);
        if (mcs_port_params[portid].sec_ctx == NULL)
            rte_exit(EXIT_FAILURE, "Device does not support Security ctx\n");

        sess_sz = rte_security_session_get_size(mcs_port_params[portid].sec_ctx);
        if (mcs_port_params[portid].sess_pool == NULL) {
            snprintf(s, sizeof(s), "sess_pool_p%d", portid);
            mcs_port_params[portid].sess_pool = rte_mempool_create(s,
                            nb_sess, sess_sz,
                            SESSION_POOL_CACHE_SIZE, 0,
                            NULL, NULL, NULL, NULL,
                            SOCKET_ID_ANY, 0);
            if (mcs_port_params[portid].sess_pool == NULL)
                rte_exit(EXIT_FAILURE, "Cannot init sess pool\n");

            printf("Allocated sess pool\n");
        }

        if (((options.tx_portmask & (1 << portid)) != 0) ||
                ((options.rx_portmask & (1 << portid)) != 0)) {
            ret = initialize_macsec_session(portid);
            if (ret < 0)
                rte_exit(EXIT_FAILURE,
                    "Failed to initialize MACsec session for port: %d\n",
                    portid);
        }
    }

    if (!nb_ports_available) {
        rte_exit(EXIT_FAILURE,
            "All available ports are disabled. Please set portmask.\n");
    }

    check_all_ports_link_status(l2fwd_enabled_port_mask);

    ret = 0;
    /* launch per-lcore init on every lcore */
    rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MAIN);
    RTE_LCORE_FOREACH_WORKER(lcore_id) {
        if (rte_eal_wait_lcore(lcore_id) < 0) {
            ret = -1;
            break;
        }
    }

    RTE_ETH_FOREACH_DEV(portid) {
        if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
            continue;
        printf("Closing port %d...", portid);
        ret = rte_eth_dev_stop(portid);
        if (ret != 0)
            printf("rte_eth_dev_stop: err=%d, port=%d\n",
                   ret, portid);
        rte_eth_dev_close(portid);
        printf(" Done\n");
    }

    /* clean up the EAL */
    rte_eal_cleanup();
    printf("Bye...\n");

    return ret;
}