examples/ipsec-secgw/ipsec_worker.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2016 Intel Corporation
 * Copyright (C) 2020 Marvell International Ltd.
 */
#include <rte_acl.h>
#include <rte_event_crypto_adapter.h>
#include <rte_event_eth_tx_adapter.h>
#include <rte_lpm.h>
#include <rte_lpm6.h>

#include "event_helper.h"
#include "ipsec.h"
#include "ipsec-secgw.h"
#include "ipsec_worker.h"
#include "sad.h"

#if defined(__ARM_NEON)
#include "ipsec_lpm_neon.h"
#endif

struct port_drv_mode_data {
    void *sess;
    void *ctx;
};

typedef void (*ipsec_worker_fn_t)(void);

int ip_reassembly_dynfield_offset = -1;
uint64_t ip_reassembly_dynflag;

static inline enum pkt_type
process_ipsec_get_pkt_type(struct rte_mbuf *pkt, uint8_t **nlp)
{
    struct rte_ether_hdr *eth;
    uint32_t ptype = pkt->packet_type;

    eth = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
    rte_prefetch0(eth);

    if (RTE_ETH_IS_IPV4_HDR(ptype)) {
        *nlp = RTE_PTR_ADD(eth, RTE_ETHER_HDR_LEN +
                offsetof(struct ip, ip_p));
        if ((ptype & RTE_PTYPE_TUNNEL_MASK) == RTE_PTYPE_TUNNEL_ESP)
            return PKT_TYPE_IPSEC_IPV4;
        else
            return PKT_TYPE_PLAIN_IPV4;
    } else if (RTE_ETH_IS_IPV6_HDR(ptype)) {
        *nlp = RTE_PTR_ADD(eth, RTE_ETHER_HDR_LEN +
                offsetof(struct ip6_hdr, ip6_nxt));
        if ((ptype & RTE_PTYPE_TUNNEL_MASK) == RTE_PTYPE_TUNNEL_ESP)
            return PKT_TYPE_IPSEC_IPV6;
        else
            return PKT_TYPE_PLAIN_IPV6;
    }

    /* Unknown/Unsupported type */
    return PKT_TYPE_INVALID;
}

static inline void
update_mac_addrs(struct rte_ether_hdr *ethhdr, uint16_t portid)
{
    memcpy(&ethhdr->src_addr, &ethaddr_tbl[portid].src, RTE_ETHER_ADDR_LEN);
    memcpy(&ethhdr->dst_addr, &ethaddr_tbl[portid].dst, RTE_ETHER_ADDR_LEN);
}

static inline void
ipsec_event_pre_forward(struct rte_mbuf *m, unsigned int port_id)
{
    /* Save the destination port in the mbuf */
    m->port = port_id;

    /* Save eth queue for Tx */
    rte_event_eth_tx_adapter_txq_set(m, 0);
}

static inline void
ev_vector_attr_init(struct rte_event_vector *vec)
{
    vec->attr_valid = 1;
    vec->port = 0xFFFF;
    vec->queue = 0;
}

static inline void
ev_vector_attr_update(struct rte_event_vector *vec, struct rte_mbuf *pkt)
{
    if (vec->port == 0xFFFF) {
        vec->port = pkt->port;
        return;
    }
    if (vec->attr_valid && (vec->port != pkt->port))
        vec->attr_valid = 0;
}

static inline void
prepare_out_sessions_tbl(struct sa_ctx *sa_out,
             struct port_drv_mode_data *data,
             uint16_t size)
{
    struct rte_ipsec_session *pri_sess;
    struct ipsec_sa *sa;
    uint32_t i;

    if (!sa_out)
        return;

    for (i = 0; i < sa_out->nb_sa; i++) {

        sa = &sa_out->sa[i];
        if (!sa)
            continue;

        pri_sess = ipsec_get_primary_session(sa);
        if (!pri_sess)
            continue;

        if (pri_sess->type !=
            RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL) {

            RTE_LOG(ERR, IPSEC, "Invalid session type %d\n",
                pri_sess->type);
            continue;
        }

        if (sa->portid >= size) {
            RTE_LOG(ERR, IPSEC,
                "Port id >= than table size %d, %d\n",
                sa->portid, size);
            continue;
        }

        /* Use only first inline session found for a given port */
        if (data[sa->portid].sess)
            continue;
        data[sa->portid].sess = pri_sess->security.ses;
        data[sa->portid].ctx = pri_sess->security.ctx;
    }
}

static inline int
check_sp(struct sp_ctx *sp, const uint8_t *nlp, uint32_t *sa_idx)
{
    uint32_t res;

    if (unlikely(sp == NULL))
        return 0;

    rte_acl_classify((struct rte_acl_ctx *)sp, &nlp, &res, 1,
            DEFAULT_MAX_CATEGORIES);

    if (unlikely(res == DISCARD))
        return 0;
    else if (res == BYPASS) {
        *sa_idx = -1;
        return 1;
    }

    *sa_idx = res - 1;
    return 1;
}

static inline void
check_sp_bulk(struct sp_ctx *sp, struct traffic_type *ip,
          struct traffic_type *ipsec)
{
    uint32_t i, j, res;
    struct rte_mbuf *m;

    if (unlikely(sp == NULL || ip->num == 0))
        return;

    rte_acl_classify((struct rte_acl_ctx *)sp, ip->data, ip->res, ip->num,
             DEFAULT_MAX_CATEGORIES);

    j = 0;
    for (i = 0; i < ip->num; i++) {
        m = ip->pkts[i];
        res = ip->res[i];
        if (unlikely(res == DISCARD))
            free_pkts(&m, 1);
        else if (res == BYPASS)
            ip->pkts[j++] = m;
        else {
            ipsec->res[ipsec->num] = res - 1;
            ipsec->pkts[ipsec->num++] = m;
        }
    }
    ip->num = j;
}

static inline void
check_sp_sa_bulk(struct sp_ctx *sp, struct sa_ctx *sa_ctx,
         struct traffic_type *ip)
{
    struct ipsec_sa *sa;
    uint32_t i, j, res;
    struct rte_mbuf *m;

    if (unlikely(sp == NULL || ip->num == 0))
        return;

    rte_acl_classify((struct rte_acl_ctx *)sp, ip->data, ip->res, ip->num,
             DEFAULT_MAX_CATEGORIES);

    j = 0;
    for (i = 0; i < ip->num; i++) {
        m = ip->pkts[i];
        res = ip->res[i];
        if (unlikely(res == DISCARD))
            free_pkts(&m, 1);
        else if (res == BYPASS)
            ip->pkts[j++] = m;
        else {
            sa = *(struct ipsec_sa **)rte_security_dynfield(m);
            if (sa == NULL) {
                free_pkts(&m, 1);
                continue;
            }

            /* SPI on the packet should match with the one in SA */
            if (unlikely(sa->spi != sa_ctx->sa[res - 1].spi)) {
                free_pkts(&m, 1);
                continue;
            }

            ip->pkts[j++] = m;
        }
    }
    ip->num = j;
}

static inline void
ipv4_pkt_l3_len_set(struct rte_mbuf *pkt)
{
    struct rte_ipv4_hdr *ipv4;

    ipv4 = rte_pktmbuf_mtod(pkt, struct rte_ipv4_hdr *);
    pkt->l3_len = ipv4->ihl * 4;
}

static inline int
ipv6_pkt_l3_len_set(struct rte_mbuf *pkt)
{
    struct rte_ipv6_hdr *ipv6;
    size_t l3_len, ext_len;
    uint32_t l3_type;
    int next_proto;
    uint8_t *p;

    ipv6 = rte_pktmbuf_mtod(pkt, struct rte_ipv6_hdr *);
    l3_len = sizeof(struct rte_ipv6_hdr);
    l3_type = pkt->packet_type & RTE_PTYPE_L3_MASK;

    if (l3_type == RTE_PTYPE_L3_IPV6_EXT ||
        l3_type == RTE_PTYPE_L3_IPV6_EXT_UNKNOWN) {
        p = rte_pktmbuf_mtod(pkt, uint8_t *);
        next_proto = ipv6->proto;
        while (next_proto != IPPROTO_ESP &&
            l3_len < pkt->data_len &&
            (next_proto = rte_ipv6_get_next_ext(p + l3_len,
                    next_proto, &ext_len)) >= 0)
            l3_len += ext_len;

        /* Drop pkt when IPv6 header exceeds first seg size */
        if (unlikely(l3_len > pkt->data_len))
            return -EINVAL;
    }
    pkt->l3_len = l3_len;

    return 0;
}

static inline uint16_t
route4_pkt(struct rte_mbuf *pkt, struct rt_ctx *rt_ctx)
{
    uint32_t dst_ip;
    uint16_t offset;
    uint32_t hop;
    int ret;

    offset = RTE_ETHER_HDR_LEN + offsetof(struct ip, ip_dst);
    dst_ip = *rte_pktmbuf_mtod_offset(pkt, uint32_t *, offset);
    dst_ip = rte_be_to_cpu_32(dst_ip);

    ret = rte_lpm_lookup((struct rte_lpm *)rt_ctx, dst_ip, &hop);

    if (ret == 0) {
        /* We have a hit */
        return hop;
    }

    /* else */
    return RTE_MAX_ETHPORTS;
}

/* TODO: To be tested */
static inline uint16_t
route6_pkt(struct rte_mbuf *pkt, struct rt_ctx *rt_ctx)
{
    struct rte_ipv6_hdr *ip;
    uint32_t hop;
    int ret;

    ip = rte_pktmbuf_mtod_offset(pkt, struct rte_ipv6_hdr *, RTE_ETHER_HDR_LEN);
    ret = rte_lpm6_lookup((struct rte_lpm6 *)rt_ctx, &ip->dst_addr, &hop);

    if (ret == 0) {
        /* We have a hit */
        return hop;
    }

    /* else */
    return RTE_MAX_ETHPORTS;
}

static inline uint16_t
get_route(struct rte_mbuf *pkt, struct route_table *rt, enum pkt_type type)
{
    if (type == PKT_TYPE_PLAIN_IPV4 || type == PKT_TYPE_IPSEC_IPV4)
        return route4_pkt(pkt, rt->rt4_ctx);
    else if (type == PKT_TYPE_PLAIN_IPV6 || type == PKT_TYPE_IPSEC_IPV6)
        return route6_pkt(pkt, rt->rt6_ctx);

    return RTE_MAX_ETHPORTS;
}

static inline void
crypto_op_reset(const struct rte_ipsec_session *ss, struct rte_mbuf *mb[],
        struct rte_crypto_op *cop[], uint16_t num)
{
    struct rte_crypto_sym_op *sop;
    uint32_t i;

    const struct rte_crypto_op unproc_cop = {
        .type = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
        .status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED,
        .sess_type = RTE_CRYPTO_OP_SECURITY_SESSION,
    };

    for (i = 0; i != num; i++) {
        cop[i]->raw = unproc_cop.raw;
        sop = cop[i]->sym;
        sop->m_src = mb[i];
        sop->m_dst = NULL;
        __rte_security_attach_session(sop, ss->security.ses);
    }
}

static inline void
crypto_prepare_event(struct rte_mbuf *pkt, struct rte_ipsec_session *sess, struct rte_event *ev)
{
    struct ipsec_mbuf_metadata *priv;
    struct rte_crypto_op *cop;

    /* Get pkt private data */
    priv = get_priv(pkt);
    cop = &priv->cop;

    /* Reset crypto operation data */
    crypto_op_reset(sess, &pkt, &cop, 1);

    /* Update event_ptr with rte_crypto_op */
    ev->event = 0;
    ev->event_ptr = cop;
}

static inline void
free_pkts_from_events(struct rte_event events[], uint16_t count)
{
    struct rte_crypto_op *cop;
    int i;

    for (i = 0; i < count; i++) {
        cop = events[i].event_ptr;
        free_pkts(&cop->sym->m_src, 1);
    }
}

static inline int
event_crypto_enqueue(struct rte_mbuf *pkt,
        struct ipsec_sa *sa, const struct eh_event_link_info *ev_link)
{
    struct rte_ipsec_session *sess;
    struct rte_event ev;
    int ret;

    /* Get IPsec session */
    sess = ipsec_get_primary_session(sa);

    crypto_prepare_event(pkt, sess, &ev);

    /* Enqueue event to crypto adapter */
    ret = rte_event_crypto_adapter_enqueue(ev_link->eventdev_id,
            ev_link->event_port_id, &ev, 1);
    if (unlikely(ret != 1)) {
        /* pkt will be freed by the caller */
        RTE_LOG_DP(DEBUG, IPSEC, "Cannot enqueue event: %i (errno: %i)\n", ret, rte_errno);
        return rte_errno;
    }

    return 0;
}

static inline int
process_ipsec_ev_inbound(struct ipsec_ctx *ctx, struct route_table *rt,
    const struct eh_event_link_info *ev_link, struct rte_event *ev)
{
    struct ipsec_sa *sa = NULL;
    struct rte_mbuf *pkt;
    uint16_t port_id = 0;
    enum pkt_type type;
    uint32_t sa_idx;
    uint8_t *nlp;

    /* Get pkt from event */
    pkt = ev->mbuf;
    if (is_ip_reassembly_incomplete(pkt) > 0) {
        free_reassembly_fail_pkt(pkt);
        return PKT_DROPPED;
    }

    /* Check the packet type */
    type = process_ipsec_get_pkt_type(pkt, &nlp);

    switch (type) {
    case PKT_TYPE_PLAIN_IPV4:
        if (pkt->ol_flags & RTE_MBUF_F_RX_SEC_OFFLOAD) {
            if (unlikely(pkt->ol_flags &
                     RTE_MBUF_F_RX_SEC_OFFLOAD_FAILED)) {
                RTE_LOG(ERR, IPSEC,
                    "Inbound security offload failed\n");
                goto drop_pkt_and_exit;
            }
            sa = *(struct ipsec_sa **)rte_security_dynfield(pkt);
        }

        /* Check if we have a match */
        if (check_sp(ctx->sp4_ctx, nlp, &sa_idx) == 0) {
            /* No valid match */
            goto drop_pkt_and_exit;
        }
        break;

    case PKT_TYPE_PLAIN_IPV6:
        if (pkt->ol_flags & RTE_MBUF_F_RX_SEC_OFFLOAD) {
            if (unlikely(pkt->ol_flags &
                     RTE_MBUF_F_RX_SEC_OFFLOAD_FAILED)) {
                RTE_LOG(ERR, IPSEC,
                    "Inbound security offload failed\n");
                goto drop_pkt_and_exit;
            }
            sa = *(struct ipsec_sa **)rte_security_dynfield(pkt);
        }

        /* Check if we have a match */
        if (check_sp(ctx->sp6_ctx, nlp, &sa_idx) == 0) {
            /* No valid match */
            goto drop_pkt_and_exit;
        }
        break;
    case PKT_TYPE_IPSEC_IPV4:
        rte_pktmbuf_adj(pkt, RTE_ETHER_HDR_LEN);
        ipv4_pkt_l3_len_set(pkt);
        sad_lookup(&ctx->sa_ctx->sad, &pkt, (void **)&sa, 1);
        sa = ipsec_mask_saptr(sa);
        if (unlikely(sa == NULL)) {
            RTE_LOG_DP(DEBUG, IPSEC, "Cannot find sa\n");
            goto drop_pkt_and_exit;
        }

        if (unlikely(event_crypto_enqueue(pkt, sa, ev_link)))
            goto drop_pkt_and_exit;

        return PKT_POSTED;
    case PKT_TYPE_IPSEC_IPV6:
        rte_pktmbuf_adj(pkt, RTE_ETHER_HDR_LEN);
        if (unlikely(ipv6_pkt_l3_len_set(pkt) != 0))
            goto drop_pkt_and_exit;
        sad_lookup(&ctx->sa_ctx->sad, &pkt, (void **)&sa, 1);
        sa = ipsec_mask_saptr(sa);
        if (unlikely(sa == NULL)) {
            RTE_LOG_DP(DEBUG, IPSEC, "Cannot find sa\n");
            goto drop_pkt_and_exit;
        }

        if (unlikely(event_crypto_enqueue(pkt, sa, ev_link)))
            goto drop_pkt_and_exit;

        return PKT_POSTED;
    default:
        RTE_LOG_DP(DEBUG, IPSEC_ESP, "Unsupported packet type = %d\n",
               type);
        goto drop_pkt_and_exit;
    }

    /* Check if the packet has to be bypassed */
    if (sa_idx == BYPASS)
        goto route_and_send_pkt;

    /* Validate sa_idx */
    if (sa_idx >= ctx->sa_ctx->nb_sa)
        goto drop_pkt_and_exit;

    /* Else the packet has to be protected with SA */

    /* If the packet was IPsec processed, then SA pointer should be set */
    if (sa == NULL)
        goto drop_pkt_and_exit;

    /* SPI on the packet should match with the one in SA */
    if (unlikely(sa->spi != ctx->sa_ctx->sa[sa_idx].spi))
        goto drop_pkt_and_exit;

route_and_send_pkt:
    port_id = get_route(pkt, rt, type);
    if (unlikely(port_id == RTE_MAX_ETHPORTS)) {
        /* no match */
        goto drop_pkt_and_exit;
    }
    /* else, we have a matching route */

    /* Update mac addresses */
    update_mac_addrs(rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *), port_id);

    /* Update the event with the dest port */
    ipsec_event_pre_forward(pkt, port_id);
    return PKT_FORWARDED;

drop_pkt_and_exit:
    free_pkts(&pkt, 1);
    ev->mbuf = NULL;
    return PKT_DROPPED;
}

static inline int
process_ipsec_ev_outbound(struct ipsec_ctx *ctx, struct route_table *rt,
        const struct eh_event_link_info *ev_link, struct rte_event *ev)
{
    struct rte_ipsec_session *sess;
    struct rte_ether_hdr *ethhdr;
    struct sa_ctx *sa_ctx;
    struct rte_mbuf *pkt;
    uint16_t port_id = 0;
    struct ipsec_sa *sa;
    enum pkt_type type;
    uint32_t sa_idx;
    uint8_t *nlp;

    /* Get pkt from event */
    pkt = ev->mbuf;

    /* Check the packet type */
    type = process_ipsec_get_pkt_type(pkt, &nlp);

    switch (type) {
    case PKT_TYPE_PLAIN_IPV4:
        /* Check if we have a match */
        if (check_sp(ctx->sp4_ctx, nlp, &sa_idx) == 0) {
            /* No valid match */
            goto drop_pkt_and_exit;
        }
        break;
    case PKT_TYPE_PLAIN_IPV6:
        /* Check if we have a match */
        if (check_sp(ctx->sp6_ctx, nlp, &sa_idx) == 0) {
            /* No valid match */
            goto drop_pkt_and_exit;
        }
        break;
    default:
        /*
         * Only plain IPv4 & IPv6 packets are allowed
         * on protected port. Drop the rest.
         */
        RTE_LOG_DP(DEBUG, IPSEC, "Unsupported packet type = %d\n", type);
        goto drop_pkt_and_exit;
    }

    ethhdr = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
    /* Check if the packet has to be bypassed */
    if (sa_idx == BYPASS) {
        port_id = get_route(pkt, rt, type);
        if (unlikely(port_id == RTE_MAX_ETHPORTS)) {
            /* no match */
            goto drop_pkt_and_exit;
        }
        /* else, we have a matching route */
        goto send_pkt;
    }

    /* Validate sa_idx */
    if (unlikely(sa_idx >= ctx->sa_ctx->nb_sa))
        goto drop_pkt_and_exit;

    /* Else the packet has to be protected */

    /* Get SA ctx*/
    sa_ctx = ctx->sa_ctx;

    /* Get SA */
    sa = &(sa_ctx->sa[sa_idx]);

    /* Get IPsec session */
    sess = ipsec_get_primary_session(sa);

    /* Determine protocol type */
    if (sess->type == RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL)
        goto lookaside;

    rte_security_set_pkt_metadata(sess->security.ctx,
                      sess->security.ses, pkt, NULL);

    /* Mark the packet for Tx security offload */
    pkt->ol_flags |= RTE_MBUF_F_TX_SEC_OFFLOAD;
    /* Update ether type */
    ethhdr->ether_type = (IS_IP4(sa->flags) ? rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4) :
                  rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6));

    /* Get the port to which this pkt need to be submitted */
    port_id = sa->portid;

send_pkt:
    /* Provide L2 len for Outbound processing */
    pkt->l2_len = RTE_ETHER_HDR_LEN;

    /* Update mac addresses */
    update_mac_addrs(ethhdr, port_id);

    /* Update the event with the dest port */
    ipsec_event_pre_forward(pkt, port_id);
    return PKT_FORWARDED;

lookaside:
    /* prepare pkt - advance start to L3 */
    rte_pktmbuf_adj(pkt, RTE_ETHER_HDR_LEN);

    if (likely(event_crypto_enqueue(pkt, sa, ev_link) == 0))
        return PKT_POSTED;

drop_pkt_and_exit:
    RTE_LOG(ERR, IPSEC, "Outbound packet dropped\n");
    free_pkts(&pkt, 1);
    ev->mbuf = NULL;
    return PKT_DROPPED;
}

static inline int
ipsec_ev_route_ip_pkts(struct rte_event_vector *vec, struct route_table *rt,
            struct ipsec_traffic *t)
{
    struct rte_ether_hdr *ethhdr;
    struct rte_mbuf *pkt;
    uint16_t port_id = 0;
    uint32_t i, j = 0;

    /* Route IPv4 packets */
    for (i = 0; i < t->ip4.num; i++) {
        pkt = t->ip4.pkts[i];
        port_id = route4_pkt(pkt, rt->rt4_ctx);
        if (port_id != RTE_MAX_ETHPORTS) {
            /* Update mac addresses */
            ethhdr = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
            update_mac_addrs(ethhdr, port_id);
            /* Update the event with the dest port */
            ipsec_event_pre_forward(pkt, port_id);
            ev_vector_attr_update(vec, pkt);
            vec->mbufs[j++] = pkt;
        } else
            free_pkts(&pkt, 1);
    }

    /* Route IPv6 packets */
    for (i = 0; i < t->ip6.num; i++) {
        pkt = t->ip6.pkts[i];
        port_id = route6_pkt(pkt, rt->rt6_ctx);
        if (port_id != RTE_MAX_ETHPORTS) {
            /* Update mac addresses */
            ethhdr = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
            update_mac_addrs(ethhdr, port_id);
            /* Update the event with the dest port */
            ipsec_event_pre_forward(pkt, port_id);
            ev_vector_attr_update(vec, pkt);
            vec->mbufs[j++] = pkt;
        } else
            free_pkts(&pkt, 1);
    }

    return j;
}

static inline int
ipsec_ev_inbound_route_pkts(struct rte_event_vector *vec,
                struct route_table *rt,
                struct ipsec_traffic *t,
                const struct eh_event_link_info *ev_link)
{
    uint32_t ret, i, j, ev_len = 0;
    struct rte_event events[MAX_PKTS];
    struct rte_ipsec_session *sess;
    struct rte_mbuf *pkt;
    struct ipsec_sa *sa;

    j = ipsec_ev_route_ip_pkts(vec, rt, t);

    /* Route ESP packets */
    for (i = 0; i < t->ipsec.num; i++) {
        pkt = t->ipsec.pkts[i];
        sa = ipsec_mask_saptr(t->ipsec.saptr[i]);
        if (unlikely(sa == NULL)) {
            free_pkts(&pkt, 1);
            continue;
        }
        sess = ipsec_get_primary_session(sa);
        crypto_prepare_event(pkt, sess, &events[ev_len]);
        ev_len++;
    }

    if (ev_len) {
        ret = rte_event_crypto_adapter_enqueue(ev_link->eventdev_id,
                ev_link->event_port_id, events, ev_len);
        if (ret < ev_len) {
            RTE_LOG_DP(DEBUG, IPSEC, "Cannot enqueue events: %i (errno: %i)\n",
                    ev_len, rte_errno);
            free_pkts_from_events(&events[ret], ev_len - ret);
            return -rte_errno;
        }
    }

    return j;
}

static inline int
ipsec_ev_outbound_route_pkts(struct rte_event_vector *vec, struct route_table *rt,
            struct ipsec_traffic *t, struct sa_ctx *sa_ctx,
            const struct eh_event_link_info *ev_link)
{
    uint32_t sa_idx, ret, i, j, ev_len = 0;
    struct rte_event events[MAX_PKTS];
    struct rte_ipsec_session *sess;
    struct rte_ether_hdr *ethhdr;
    uint16_t port_id = 0;
    struct rte_mbuf *pkt;
    struct ipsec_sa *sa;

    j = ipsec_ev_route_ip_pkts(vec, rt, t);

    /* Handle IPsec packets.
     * For lookaside IPsec packets, submit to cryptodev queue.
     * For inline IPsec packets, route the packet.
     */
    for (i = 0; i < t->ipsec.num; i++) {
        /* Validate sa_idx */
        sa_idx = t->ipsec.res[i];
        pkt = t->ipsec.pkts[i];
        if (unlikely(sa_idx >= sa_ctx->nb_sa)) {
            free_pkts(&pkt, 1);
            continue;
        }
        /* Else the packet has to be protected */
        sa = &(sa_ctx->sa[sa_idx]);
        /* Get IPsec session */
        sess = ipsec_get_primary_session(sa);
        switch (sess->type) {
        case RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL:
            rte_pktmbuf_adj(pkt, RTE_ETHER_HDR_LEN);
            crypto_prepare_event(pkt, sess, &events[ev_len]);
            ev_len++;
            break;
        case RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL:
            rte_security_set_pkt_metadata(sess->security.ctx,
                        sess->security.ses, pkt, NULL);
            pkt->ol_flags |= RTE_MBUF_F_TX_SEC_OFFLOAD;
            port_id = sa->portid;

            /* Fetch outer ip type and update */
            ethhdr = rte_pktmbuf_mtod(pkt, struct rte_ether_hdr *);
            ethhdr->ether_type = (IS_IP4(sa->flags) ?
                          rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4) :
                          rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6));
            update_mac_addrs(ethhdr, port_id);

            ipsec_event_pre_forward(pkt, port_id);
            ev_vector_attr_update(vec, pkt);
            vec->mbufs[j++] = pkt;
            break;
        default:
            RTE_LOG(ERR, IPSEC, "SA type not supported\n");
            free_pkts(&pkt, 1);
            break;
        }
    }

    if (ev_len) {
        ret = rte_event_crypto_adapter_enqueue(ev_link->eventdev_id,
                ev_link->event_port_id, events, ev_len);
        if (ret < ev_len) {
            RTE_LOG_DP(DEBUG, IPSEC, "Cannot enqueue events: %i (errno: %i)\n",
                   ev_len, rte_errno);
            free_pkts_from_events(&events[ret], ev_len - ret);
            return -rte_errno;
        }
    }

    return j;
}

static inline void
classify_pkt(struct rte_mbuf *pkt, struct ipsec_traffic *t)
{
    enum pkt_type type;
    uint8_t *nlp;

    /* Check the packet type */
    type = process_ipsec_get_pkt_type(pkt, &nlp);

    switch (type) {
    case PKT_TYPE_PLAIN_IPV4:
        t->ip4.data[t->ip4.num] = nlp;
        t->ip4.pkts[(t->ip4.num)++] = pkt;
        break;
    case PKT_TYPE_PLAIN_IPV6:
        t->ip6.data[t->ip6.num] = nlp;
        t->ip6.pkts[(t->ip6.num)++] = pkt;
        break;
    case PKT_TYPE_IPSEC_IPV4:
        rte_pktmbuf_adj(pkt, RTE_ETHER_HDR_LEN);
        ipv4_pkt_l3_len_set(pkt);
        t->ipsec.pkts[(t->ipsec.num)++] = pkt;
        break;
    case PKT_TYPE_IPSEC_IPV6:
        rte_pktmbuf_adj(pkt, RTE_ETHER_HDR_LEN);
        if (ipv6_pkt_l3_len_set(pkt) != 0) {
            free_pkts(&pkt, 1);
            return;
        }
        t->ipsec.pkts[(t->ipsec.num)++] = pkt;
        break;
    default:
        RTE_LOG_DP(DEBUG, IPSEC_ESP, "Unsupported packet type = %d\n",
               type);
        free_pkts(&pkt, 1);
        break;
    }
}

static inline int
process_ipsec_ev_inbound_vector(struct ipsec_ctx *ctx, struct route_table *rt,
                struct rte_event_vector *vec,
                const struct eh_event_link_info *ev_link)
{
    struct ipsec_traffic t;
    struct rte_mbuf *pkt;
    int i;

    t.ip4.num = 0;
    t.ip6.num = 0;
    t.ipsec.num = 0;

    for (i = 0; i < vec->nb_elem; i++) {
        /* Get pkt from event */
        pkt = vec->mbufs[i];
        if (is_ip_reassembly_incomplete(pkt) > 0) {
            free_reassembly_fail_pkt(pkt);
            continue;
        }

        if (pkt->ol_flags & RTE_MBUF_F_RX_SEC_OFFLOAD) {
            if (unlikely(pkt->ol_flags &
                     RTE_MBUF_F_RX_SEC_OFFLOAD_FAILED)) {
                RTE_LOG(ERR, IPSEC,
                    "Inbound security offload failed\n");
                free_pkts(&pkt, 1);
                continue;
            }
        }

        classify_pkt(pkt, &t);
    }

    check_sp_sa_bulk(ctx->sp4_ctx, ctx->sa_ctx, &t.ip4);
    check_sp_sa_bulk(ctx->sp6_ctx, ctx->sa_ctx, &t.ip6);

    if (t.ipsec.num != 0)
        sad_lookup(&ctx->sa_ctx->sad, t.ipsec.pkts, t.ipsec.saptr, t.ipsec.num);

    return ipsec_ev_inbound_route_pkts(vec, rt, &t, ev_link);
}

static inline int
process_ipsec_ev_outbound_vector(struct ipsec_ctx *ctx, struct route_table *rt,
                 struct rte_event_vector *vec,
                 const struct eh_event_link_info *ev_link)
{
    struct ipsec_traffic t;
    struct rte_mbuf *pkt;
    uint32_t i;

    t.ip4.num = 0;
    t.ip6.num = 0;
    t.ipsec.num = 0;

    for (i = 0; i < vec->nb_elem; i++) {
        /* Get pkt from event */
        pkt = vec->mbufs[i];

        classify_pkt(pkt, &t);

        /* Provide L2 len for Outbound processing */
        pkt->l2_len = RTE_ETHER_HDR_LEN;
    }

    check_sp_bulk(ctx->sp4_ctx, &t.ip4, &t.ipsec);
    check_sp_bulk(ctx->sp6_ctx, &t.ip6, &t.ipsec);

    return ipsec_ev_outbound_route_pkts(vec, rt, &t, ctx->sa_ctx, ev_link);
}

static inline int
process_ipsec_ev_drv_mode_outbound_vector(struct rte_event_vector *vec,
                      struct port_drv_mode_data *data)
{
    struct rte_mbuf *pkt;
    int16_t port_id;
    uint32_t i;
    int j = 0;

    for (i = 0; i < vec->nb_elem; i++) {
        pkt = vec->mbufs[i];
        port_id = pkt->port;

        if (unlikely(!data[port_id].sess)) {
            free_pkts(&pkt, 1);
            continue;
        }
        ipsec_event_pre_forward(pkt, port_id);
        /* Save security session */
        rte_security_set_pkt_metadata(data[port_id].ctx,
                          data[port_id].sess, pkt,
                          NULL);

        /* Mark the packet for Tx security offload */
        pkt->ol_flags |= RTE_MBUF_F_TX_SEC_OFFLOAD;

        /* Provide L2 len for Outbound processing */
        pkt->l2_len = RTE_ETHER_HDR_LEN;

        vec->mbufs[j++] = pkt;
    }

    return j;
}

static void
ipsec_event_vector_free(struct rte_event *ev)
{
    struct rte_event_vector *vec = ev->vec;

    if (ev->event_type == RTE_EVENT_TYPE_CRYPTODEV_VECTOR) {
        struct rte_crypto_op *cop;
        int i;

        for (i = 0; i < vec->nb_elem; i++) {
            cop = vec->ptrs[i];
            rte_pktmbuf_free(cop->sym->m_src);
        }
    } else {
        rte_pktmbuf_free_bulk(vec->mbufs + vec->elem_offset, vec->nb_elem);
    }
    rte_mempool_put(rte_mempool_from_obj(vec), vec);
}

static inline void
ipsec_ev_vector_process(struct lcore_conf_ev_tx_int_port_wrkr *lconf,
            struct eh_event_link_info *links,
            struct rte_event *ev)
{
    struct rte_event_vector *vec = ev->vec;
    struct rte_mbuf *pkt;
    int ret;

    pkt = vec->mbufs[0];

    ev_vector_attr_init(vec);
    core_stats_update_rx(vec->nb_elem);

    if (is_unprotected_port(pkt->port))
        ret = process_ipsec_ev_inbound_vector(&lconf->inbound,
                              &lconf->rt, vec, links);
    else
        ret = process_ipsec_ev_outbound_vector(&lconf->outbound,
                               &lconf->rt, vec, links);

    if (likely(ret > 0)) {
        core_stats_update_tx(vec->nb_elem);
        vec->nb_elem = ret;
        ret = rte_event_eth_tx_adapter_enqueue(links[0].eventdev_id,
                               links[0].event_port_id, ev, 1, 0);
        if (unlikely(ret == 0))
            ipsec_event_vector_free(ev);
    } else {
        rte_mempool_put(rte_mempool_from_obj(vec), vec);
    }
}

static inline void
ipsec_ev_vector_drv_mode_process(struct eh_event_link_info *links,
                 struct rte_event *ev,
                 struct port_drv_mode_data *data)
{
    struct rte_event_vector *vec = ev->vec;
    struct rte_mbuf *pkt;
    uint16_t ret;

    pkt = vec->mbufs[0];
    vec->attr_valid = 1;
    vec->port = pkt->port;

    if (!is_unprotected_port(pkt->port))
        vec->nb_elem = process_ipsec_ev_drv_mode_outbound_vector(vec,
                                     data);
    if (likely(vec->nb_elem > 0)) {
        ret = rte_event_eth_tx_adapter_enqueue(links[0].eventdev_id,
                               links[0].event_port_id, ev, 1, 0);
        if (unlikely(ret == 0))
            ipsec_event_vector_free(ev);
    } else
        rte_mempool_put(rte_mempool_from_obj(vec), vec);
}

static inline int
ipsec_ev_cryptodev_process_one_pkt(
        const struct lcore_conf_ev_tx_int_port_wrkr *lconf,
        const struct rte_crypto_op *cop, struct rte_mbuf *pkt)
{
    struct rte_ether_hdr *ethhdr;
    uint16_t port_id;
    struct ip *ip;

    /* If operation was not successful, free the packet */
    if (unlikely(cop->status != RTE_CRYPTO_OP_STATUS_SUCCESS)) {
        RTE_LOG_DP(INFO, IPSEC, "Crypto operation failed\n");
        free_pkts(&pkt, 1);
        return -1;
    }

    ip = rte_pktmbuf_mtod(pkt, struct ip *);

    /* Prepend Ether layer */
    ethhdr = (struct rte_ether_hdr *)rte_pktmbuf_prepend(pkt, RTE_ETHER_HDR_LEN);

    /* Route pkt and update required fields */
    if (ip->ip_v == IPVERSION) {
        pkt->ol_flags |= lconf->outbound.ipv4_offloads;
        pkt->l3_len = sizeof(struct ip);
        pkt->l2_len = RTE_ETHER_HDR_LEN;

        ethhdr->ether_type = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV4);

        port_id = route4_pkt(pkt, lconf->rt.rt4_ctx);
    } else {
        pkt->ol_flags |= lconf->outbound.ipv6_offloads;
        pkt->l3_len = sizeof(struct ip6_hdr);
        pkt->l2_len = RTE_ETHER_HDR_LEN;

        ethhdr->ether_type = rte_cpu_to_be_16(RTE_ETHER_TYPE_IPV6);

        port_id = route6_pkt(pkt, lconf->rt.rt6_ctx);
    }

    if (unlikely(port_id == RTE_MAX_ETHPORTS)) {
        RTE_LOG_DP(DEBUG, IPSEC, "Cannot route processed packet\n");
        free_pkts(&pkt, 1);
        return -1;
    }

    /* Update Ether with port's MAC addresses */
    memcpy(&ethhdr->src_addr, &ethaddr_tbl[port_id].src, sizeof(struct rte_ether_addr));
    memcpy(&ethhdr->dst_addr, &ethaddr_tbl[port_id].dst, sizeof(struct rte_ether_addr));

    ipsec_event_pre_forward(pkt, port_id);

    return 0;
}

static inline void
ipsec_ev_cryptodev_vector_process(
        const struct lcore_conf_ev_tx_int_port_wrkr *lconf,
        const struct eh_event_link_info *links,
        struct rte_event *ev)
{
    struct rte_event_vector *vec = ev->vec;
    const uint16_t nb_events = 1;
    struct rte_crypto_op *cop;
    struct rte_mbuf *pkt;
    uint16_t enqueued;
    int i, n = 0;

    ev_vector_attr_init(vec);
    /* Transform cop vec into pkt vec */
    for (i = 0; i < vec->nb_elem; i++) {
        /* Get pkt data */
        cop = vec->ptrs[i];
        pkt = cop->sym->m_src;
        if (ipsec_ev_cryptodev_process_one_pkt(lconf, cop, pkt))
            continue;

        vec->mbufs[n++] = pkt;
        ev_vector_attr_update(vec, pkt);
    }

    if (n == 0) {
        rte_mempool_put(rte_mempool_from_obj(vec), vec);
        return;
    }

    vec->nb_elem = n;
    enqueued = rte_event_eth_tx_adapter_enqueue(links[0].eventdev_id,
            links[0].event_port_id, ev, nb_events, 0);
    if (enqueued != nb_events) {
        RTE_LOG_DP(DEBUG, IPSEC, "Failed to enqueue to tx, ret = %u,"
                " errno = %i\n", enqueued, rte_errno);
        free_pkts(vec->mbufs, vec->nb_elem);
        rte_mempool_put(rte_mempool_from_obj(vec), vec);
    } else {
        core_stats_update_tx(n);
    }
}

static inline int
ipsec_ev_cryptodev_process(const struct lcore_conf_ev_tx_int_port_wrkr *lconf,
               struct rte_event *ev)
{
    struct rte_crypto_op *cop;
    struct rte_mbuf *pkt;

    /* Get pkt data */
    cop = ev->event_ptr;
    pkt = cop->sym->m_src;

    if (ipsec_ev_cryptodev_process_one_pkt(lconf, cop, pkt))
        return PKT_DROPPED;

    /* Update event */
    ev->mbuf = pkt;

    return PKT_FORWARDED;
}

/*
 * Event mode exposes various operating modes depending on the
 * capabilities of the event device and the operating mode
 * selected.
 */

static void
ipsec_event_port_flush(uint8_t eventdev_id __rte_unused, struct rte_event ev,
               void *args __rte_unused)
{
    if (ev.event_type & RTE_EVENT_TYPE_VECTOR)
        ipsec_event_vector_free(&ev);
    else
        rte_pktmbuf_free(ev.mbuf);
}

/* Workers registered */
#define IPSEC_EVENTMODE_WORKERS     2

static void
ipsec_ip_reassembly_dyn_offset_get(void)
{
    /* Retrieve reassembly dynfield offset if available */
    if (ip_reassembly_dynfield_offset < 0)
        ip_reassembly_dynfield_offset = rte_mbuf_dynfield_lookup(
                RTE_MBUF_DYNFIELD_IP_REASSEMBLY_NAME, NULL);

    if (ip_reassembly_dynflag == 0) {
        int ip_reassembly_dynflag_offset;
        ip_reassembly_dynflag_offset = rte_mbuf_dynflag_lookup(
                RTE_MBUF_DYNFLAG_IP_REASSEMBLY_INCOMPLETE_NAME, NULL);
        if (ip_reassembly_dynflag_offset >= 0)
            ip_reassembly_dynflag = RTE_BIT64(ip_reassembly_dynflag_offset);
    }
}

/*
 * Event mode worker
 * Operating parameters : non-burst - Tx internal port - driver mode
 */
static void
ipsec_wrkr_non_burst_int_port_drv_mode(struct eh_event_link_info *links,
        uint8_t nb_links)
{
    struct port_drv_mode_data data[RTE_MAX_ETHPORTS];
    unsigned int nb_rx = 0, nb_tx;
    struct rte_mbuf *pkt;
    struct rte_event ev;
    uint32_t lcore_id;
    int32_t socket_id;
    int16_t port_id;

    /* Check if we have links registered for this lcore */
    if (nb_links == 0) {
        /* No links registered - exit */
        return;
    }

    memset(&data, 0, sizeof(struct port_drv_mode_data));

    /* Get core ID */
    lcore_id = rte_lcore_id();

    /* Get socket ID */
    socket_id = rte_lcore_to_socket_id(lcore_id);

    /*
     * Prepare security sessions table. In outbound driver mode
     * we always use first session configured for a given port
     */
    prepare_out_sessions_tbl(socket_ctx[socket_id].sa_out, data,
                 RTE_MAX_ETHPORTS);

    RTE_LOG(INFO, IPSEC,
        "Launching event mode worker (non-burst - Tx internal port - "
        "driver mode) on lcore %d\n", lcore_id);

    /* We have valid links */

    /* Check if it's single link */
    if (nb_links != 1) {
        RTE_LOG(INFO, IPSEC,
            "Multiple links not supported. Using first link\n");
    }

    RTE_LOG(INFO, IPSEC, " -- lcoreid=%u event_port_id=%u\n", lcore_id,
            links[0].event_port_id);
    while (!force_quit) {
        /* Read packet from event queues */
        nb_rx = rte_event_dequeue_burst(links[0].eventdev_id,
                links[0].event_port_id,
                &ev,    /* events */
                1,  /* nb_events */
                0   /* timeout_ticks */);

        if (nb_rx == 0)
            continue;

        switch (ev.event_type) {
        case RTE_EVENT_TYPE_ETH_RX_ADAPTER_VECTOR:
        case RTE_EVENT_TYPE_ETHDEV_VECTOR:
            ipsec_ev_vector_drv_mode_process(links, &ev, data);
            continue;
        case RTE_EVENT_TYPE_ETHDEV:
            break;
        default:
            RTE_LOG(ERR, IPSEC, "Invalid event type %u",
                ev.event_type);
            continue;
        }

        pkt = ev.mbuf;
        port_id = pkt->port;

        rte_prefetch0(rte_pktmbuf_mtod(pkt, void *));

        /* Process packet */
        ipsec_event_pre_forward(pkt, port_id);

        if (!is_unprotected_port(port_id)) {

            if (unlikely(!data[port_id].sess)) {
                rte_pktmbuf_free(pkt);
                continue;
            }

            /* Save security session */
            rte_security_set_pkt_metadata(data[port_id].ctx,
                              data[port_id].sess, pkt,
                              NULL);

            /* Mark the packet for Tx security offload */
            pkt->ol_flags |= RTE_MBUF_F_TX_SEC_OFFLOAD;

            /* Provide L2 len for Outbound processing */
            pkt->l2_len = RTE_ETHER_HDR_LEN;
        }

        /*
         * Since tx internal port is available, events can be
         * directly enqueued to the adapter and it would be
         * internally submitted to the eth device.
         */
        nb_tx = rte_event_eth_tx_adapter_enqueue(links[0].eventdev_id,
                             links[0].event_port_id,
                             &ev, /* events */
                             1,   /* nb_events */
                             0 /* flags */);
        if (!nb_tx)
            rte_pktmbuf_free(ev.mbuf);
    }

    if (ev.u64) {
        ev.op = RTE_EVENT_OP_RELEASE;
        rte_event_enqueue_burst(links[0].eventdev_id,
                    links[0].event_port_id, &ev, 1);
    }

    rte_event_port_quiesce(links[0].eventdev_id, links[0].event_port_id,
                   ipsec_event_port_flush, NULL);
}

/*
 * Event mode worker
 * Operating parameters : non-burst - Tx internal port - app mode
 */
static void
ipsec_wrkr_non_burst_int_port_app_mode(struct eh_event_link_info *links,
        uint8_t nb_links)
{
    struct lcore_conf_ev_tx_int_port_wrkr lconf;
    unsigned int nb_rx = 0, nb_tx;
    struct rte_event ev;
    uint32_t lcore_id;
    int32_t socket_id;
    int ret;

    /* Check if we have links registered for this lcore */
    if (nb_links == 0) {
        /* No links registered - exit */
        return;
    }

    /* We have valid links */

    /* Get core ID */
    lcore_id = rte_lcore_id();

    /* Get socket ID */
    socket_id = rte_lcore_to_socket_id(lcore_id);

    /* Save routing table */
    lconf.rt.rt4_ctx = socket_ctx[socket_id].rt_ip4;
    lconf.rt.rt6_ctx = socket_ctx[socket_id].rt_ip6;
    lconf.inbound.sp4_ctx = socket_ctx[socket_id].sp_ip4_in;
    lconf.inbound.sp6_ctx = socket_ctx[socket_id].sp_ip6_in;
    lconf.inbound.sa_ctx = socket_ctx[socket_id].sa_in;
    lconf.inbound.lcore_id = lcore_id;
    lconf.outbound.sp4_ctx = socket_ctx[socket_id].sp_ip4_out;
    lconf.outbound.sp6_ctx = socket_ctx[socket_id].sp_ip6_out;
    lconf.outbound.sa_ctx = socket_ctx[socket_id].sa_out;
    lconf.outbound.ipv4_offloads = tx_offloads.ipv4_offloads;
    lconf.outbound.ipv6_offloads = tx_offloads.ipv6_offloads;
    lconf.outbound.lcore_id = lcore_id;

    RTE_LOG(INFO, IPSEC,
        "Launching event mode worker (non-burst - Tx internal port - "
        "app mode) on lcore %d\n", lcore_id);

    ret = ipsec_sad_lcore_cache_init(app_sa_prm.cache_sz);
    if (ret != 0) {
        RTE_LOG(ERR, IPSEC,
            "SAD cache init on lcore %u, failed with code: %d\n",
            lcore_id, ret);
        return;
    }

    /* Check if it's single link */
    if (nb_links != 1) {
        RTE_LOG(INFO, IPSEC,
            "Multiple links not supported. Using first link\n");
    }

    RTE_LOG(INFO, IPSEC, " -- lcoreid=%u event_port_id=%u\n", lcore_id,
        links[0].event_port_id);

    ipsec_ip_reassembly_dyn_offset_get();

    while (!force_quit) {
        /* Read packet from event queues */
        nb_rx = rte_event_dequeue_burst(links[0].eventdev_id,
                links[0].event_port_id,
                &ev,     /* events */
                1,       /* nb_events */
                0        /* timeout_ticks */);

        if (nb_rx == 0)
            continue;

        switch (ev.event_type) {
        case RTE_EVENT_TYPE_ETH_RX_ADAPTER_VECTOR:
        case RTE_EVENT_TYPE_ETHDEV_VECTOR:
            ipsec_ev_vector_process(&lconf, links, &ev);
            continue;
        case RTE_EVENT_TYPE_ETHDEV:
            core_stats_update_rx(1);
            if (is_unprotected_port(ev.mbuf->port))
                ret = process_ipsec_ev_inbound(&lconf.inbound,
                                &lconf.rt, links, &ev);
            else
                ret = process_ipsec_ev_outbound(&lconf.outbound,
                                &lconf.rt, links, &ev);
            if (ret != 1)
                /* The pkt has been dropped or posted */
                continue;
            break;
        case RTE_EVENT_TYPE_CRYPTODEV:
            ret = ipsec_ev_cryptodev_process(&lconf, &ev);
            if (unlikely(ret != PKT_FORWARDED))
                continue;
            break;
        case RTE_EVENT_TYPE_CRYPTODEV_VECTOR:
            ipsec_ev_cryptodev_vector_process(&lconf, links, &ev);
            continue;
        default:
            RTE_LOG(ERR, IPSEC, "Invalid event type %u",
                ev.event_type);
            continue;
        }

        core_stats_update_tx(1);
        /*
         * Since tx internal port is available, events can be
         * directly enqueued to the adapter and it would be
         * internally submitted to the eth device.
         */
        nb_tx = rte_event_eth_tx_adapter_enqueue(links[0].eventdev_id,
                             links[0].event_port_id,
                             &ev, /* events */
                             1,   /* nb_events */
                             0 /* flags */);
        if (!nb_tx)
            rte_pktmbuf_free(ev.mbuf);
    }

    if (ev.u64) {
        ev.op = RTE_EVENT_OP_RELEASE;
        rte_event_enqueue_burst(links[0].eventdev_id,
                    links[0].event_port_id, &ev, 1);
    }

    rte_event_port_quiesce(links[0].eventdev_id, links[0].event_port_id,
                   ipsec_event_port_flush, NULL);
}

static uint8_t
ipsec_eventmode_populate_wrkr_params(struct eh_app_worker_params *wrkrs)
{
    struct eh_app_worker_params *wrkr;
    uint8_t nb_wrkr_param = 0;

    /* Save workers */
    wrkr = wrkrs;

    /* Non-burst - Tx internal port - driver mode */
    wrkr->cap.burst = EH_RX_TYPE_NON_BURST;
    wrkr->cap.tx_internal_port = EH_TX_TYPE_INTERNAL_PORT;
    wrkr->cap.ipsec_mode = EH_IPSEC_MODE_TYPE_DRIVER;
    wrkr->worker_thread = ipsec_wrkr_non_burst_int_port_drv_mode;
    wrkr++;
    nb_wrkr_param++;

    /* Non-burst - Tx internal port - app mode */
    wrkr->cap.burst = EH_RX_TYPE_NON_BURST;
    wrkr->cap.tx_internal_port = EH_TX_TYPE_INTERNAL_PORT;
    wrkr->cap.ipsec_mode = EH_IPSEC_MODE_TYPE_APP;
    wrkr->worker_thread = ipsec_wrkr_non_burst_int_port_app_mode;
    nb_wrkr_param++;

    return nb_wrkr_param;
}

static void
ipsec_eventmode_worker(struct eh_conf *conf)
{
    struct eh_app_worker_params ipsec_wrkr[IPSEC_EVENTMODE_WORKERS] = {
                    {{{0} }, NULL } };
    uint8_t nb_wrkr_param;

    /* Populate l2fwd_wrkr params */
    nb_wrkr_param = ipsec_eventmode_populate_wrkr_params(ipsec_wrkr);

    /*
     * Launch correct worker after checking
     * the event device's capabilities.
     */
    eh_launch_worker(conf, ipsec_wrkr, nb_wrkr_param);
}

static __rte_always_inline void
outb_inl_pro_spd_process(struct sp_ctx *sp,
             struct sa_ctx *sa_ctx,
             struct traffic_type *ip,
             struct traffic_type *match,
             struct traffic_type *mismatch,
             bool match_flag,
             struct ipsec_spd_stats *stats)
{
    uint32_t prev_sa_idx = UINT32_MAX;
    struct rte_mbuf *ipsec[MAX_PKT_BURST];
    struct rte_ipsec_session *ips;
    uint32_t i, j, j_mis, sa_idx;
    struct ipsec_sa *sa = NULL;
    uint32_t ipsec_num = 0;
    struct rte_mbuf *m;
    uint64_t satp;

    if (ip->num == 0 || sp == NULL)
        return;

    rte_acl_classify((struct rte_acl_ctx *)sp, ip->data, ip->res,
            ip->num, DEFAULT_MAX_CATEGORIES);

    j = match->num;
    j_mis = mismatch->num;

    for (i = 0; i < ip->num; i++) {
        m = ip->pkts[i];
        sa_idx = ip->res[i] - 1;

        if (unlikely(ip->res[i] == DISCARD)) {
            free_pkts(&m, 1);

            stats->discard++;
        } else if (unlikely(ip->res[i] == BYPASS)) {
            match->pkts[j++] = m;

            stats->bypass++;
        } else {
            if (prev_sa_idx == UINT32_MAX) {
                prev_sa_idx = sa_idx;
                sa = &sa_ctx->sa[sa_idx];
                ips = ipsec_get_primary_session(sa);
                satp = rte_ipsec_sa_type(ips->sa);
            }

            if (sa_idx != prev_sa_idx) {
                prep_process_group(sa, ipsec, ipsec_num);

                /* Prepare packets for outbound */
                rte_ipsec_pkt_process(ips, ipsec, ipsec_num);

                /* Copy to current tr or a different tr */
                if (SATP_OUT_IPV4(satp) == match_flag) {
                    memcpy(&match->pkts[j], ipsec,
                           ipsec_num * sizeof(void *));
                    j += ipsec_num;
                } else {
                    memcpy(&mismatch->pkts[j_mis], ipsec,
                           ipsec_num * sizeof(void *));
                    j_mis += ipsec_num;
                }

                /* Update to new SA */
                sa = &sa_ctx->sa[sa_idx];
                ips = ipsec_get_primary_session(sa);
                satp = rte_ipsec_sa_type(ips->sa);
                ipsec_num = 0;
            }

            ipsec[ipsec_num++] = m;
            stats->protect++;
        }
    }

    if (ipsec_num) {
        prep_process_group(sa, ipsec, ipsec_num);

        /* Prepare pacekts for outbound */
        rte_ipsec_pkt_process(ips, ipsec, ipsec_num);

        /* Copy to current tr or a different tr */
        if (SATP_OUT_IPV4(satp) == match_flag) {
            memcpy(&match->pkts[j], ipsec,
                   ipsec_num * sizeof(void *));
            j += ipsec_num;
        } else {
            memcpy(&mismatch->pkts[j_mis], ipsec,
                   ipsec_num * sizeof(void *));
            j_mis += ipsec_num;
        }
    }
    match->num = j;
    mismatch->num = j_mis;
}

/* Poll mode worker when all SA's are of type inline protocol */
void
ipsec_poll_mode_wrkr_inl_pr(void)
{
    const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1)
            / US_PER_S * BURST_TX_DRAIN_US;
    struct sp_ctx *sp4_in, *sp6_in, *sp4_out, *sp6_out;
    struct rte_mbuf *pkts[MAX_PKT_BURST];
    uint64_t prev_tsc, diff_tsc, cur_tsc;
    struct ipsec_core_statistics *stats;
    struct rt_ctx *rt4_ctx, *rt6_ctx;
    struct sa_ctx *sa_in, *sa_out;
    struct traffic_type ip4, ip6;
    struct lcore_rx_queue *rxql;
    struct rte_mbuf **v4, **v6;
    struct ipsec_traffic trf;
    struct lcore_conf *qconf;
    uint16_t v4_num, v6_num;
    int32_t socket_id;
    uint32_t lcore_id;
    int32_t i, nb_rx;
    uint16_t portid, queueid;

    prev_tsc = 0;
    lcore_id = rte_lcore_id();
    qconf = &lcore_conf[lcore_id];
    rxql = qconf->rx_queue_list;
    socket_id = rte_lcore_to_socket_id(lcore_id);
    stats = &core_statistics[lcore_id];

    rt4_ctx = socket_ctx[socket_id].rt_ip4;
    rt6_ctx = socket_ctx[socket_id].rt_ip6;

    sp4_in = socket_ctx[socket_id].sp_ip4_in;
    sp6_in = socket_ctx[socket_id].sp_ip6_in;
    sa_in = socket_ctx[socket_id].sa_in;

    sp4_out = socket_ctx[socket_id].sp_ip4_out;
    sp6_out = socket_ctx[socket_id].sp_ip6_out;
    sa_out = socket_ctx[socket_id].sa_out;

    qconf->frag.pool_indir = socket_ctx[socket_id].mbuf_pool_indir;

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

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

    for (i = 0; i < qconf->nb_rx_queue; i++) {
        portid = rxql[i].port_id;
        queueid = rxql[i].queue_id;
        RTE_LOG(INFO, IPSEC,
            " -- lcoreid=%u portid=%u rxqueueid=%" PRIu16 "\n",
            lcore_id, portid, queueid);
    }

    ipsec_ip_reassembly_dyn_offset_get();

    while (!force_quit) {
        cur_tsc = rte_rdtsc();

        /* TX queue buffer drain */
        diff_tsc = cur_tsc - prev_tsc;

        if (unlikely(diff_tsc > drain_tsc)) {
            drain_tx_buffers(qconf);
            prev_tsc = cur_tsc;
        }

        for (i = 0; i < qconf->nb_rx_queue; ++i) {
            /* Read packets from RX queues */
            portid = rxql[i].port_id;
            queueid = rxql[i].queue_id;
            nb_rx = rte_eth_rx_burst(portid, queueid,
                    pkts, MAX_PKT_BURST);

            if (nb_rx <= 0)
                continue;

            core_stats_update_rx(nb_rx);

            prepare_traffic(rxql[i].sec_ctx, pkts, &trf, nb_rx);

            /* Drop any IPsec traffic */
            free_pkts(trf.ipsec.pkts, trf.ipsec.num);

            if (is_unprotected_port(portid)) {
                inbound_sp_sa(sp4_in, sa_in, &trf.ip4,
                          trf.ip4.num,
                          &stats->inbound.spd4);

                inbound_sp_sa(sp6_in, sa_in, &trf.ip6,
                          trf.ip6.num,
                          &stats->inbound.spd6);

                v4 = trf.ip4.pkts;
                v4_num = trf.ip4.num;
                v6 = trf.ip6.pkts;
                v6_num = trf.ip6.num;
            } else {
                ip4.num = 0;
                ip6.num = 0;

                outb_inl_pro_spd_process(sp4_out, sa_out,
                             &trf.ip4, &ip4, &ip6,
                             true,
                             &stats->outbound.spd4);

                outb_inl_pro_spd_process(sp6_out, sa_out,
                             &trf.ip6, &ip6, &ip4,
                             false,
                             &stats->outbound.spd6);
                v4 = ip4.pkts;
                v4_num = ip4.num;
                v6 = ip6.pkts;
                v6_num = ip6.num;
            }

#if defined __ARM_NEON
            route4_pkts_neon(rt4_ctx, v4, v4_num, 0, false);
            route6_pkts_neon(rt6_ctx, v6, v6_num);
#else
            route4_pkts(rt4_ctx, v4, v4_num, 0, false);
            route6_pkts(rt6_ctx, v6, v6_num);
#endif
        }
    }
}

/* Poll mode worker when all SA's are of type inline protocol
 * and single sa mode is enabled.
 */
void
ipsec_poll_mode_wrkr_inl_pr_ss(void)
{
    const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1)
            / US_PER_S * BURST_TX_DRAIN_US;
    uint16_t sa_out_portid = 0, sa_out_proto = 0;
    struct rte_mbuf *pkts[MAX_PKT_BURST], *pkt;
    uint64_t prev_tsc, diff_tsc, cur_tsc;
    struct rte_ipsec_session *ips = NULL;
    struct lcore_rx_queue *rxql;
    struct ipsec_sa *sa = NULL;
    struct lcore_conf *qconf;
    struct sa_ctx *sa_out;
    uint32_t i, nb_rx, j;
    int32_t socket_id;
    uint32_t lcore_id;
    uint16_t portid, queueid;

    prev_tsc = 0;
    lcore_id = rte_lcore_id();
    qconf = &lcore_conf[lcore_id];
    rxql = qconf->rx_queue_list;
    socket_id = rte_lcore_to_socket_id(lcore_id);

    /* Get SA info */
    sa_out = socket_ctx[socket_id].sa_out;
    if (sa_out && single_sa_idx < sa_out->nb_sa) {
        sa = &sa_out->sa[single_sa_idx];
        ips = ipsec_get_primary_session(sa);
        sa_out_portid = sa->portid;
        if (sa->flags & IP6_TUNNEL)
            sa_out_proto = IPPROTO_IPV6;
        else
            sa_out_proto = IPPROTO_IP;
    }

    qconf->frag.pool_indir = socket_ctx[socket_id].mbuf_pool_indir;

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

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

    for (i = 0; i < qconf->nb_rx_queue; i++) {
        portid = rxql[i].port_id;
        queueid = rxql[i].queue_id;
        RTE_LOG(INFO, IPSEC,
            " -- lcoreid=%u portid=%u rxqueueid=%" PRIu16 "\n",
            lcore_id, portid, queueid);
    }

    while (!force_quit) {
        cur_tsc = rte_rdtsc();

        /* TX queue buffer drain */
        diff_tsc = cur_tsc - prev_tsc;

        if (unlikely(diff_tsc > drain_tsc)) {
            drain_tx_buffers(qconf);
            prev_tsc = cur_tsc;
        }

        for (i = 0; i < qconf->nb_rx_queue; ++i) {
            /* Read packets from RX queues */
            portid = rxql[i].port_id;
            queueid = rxql[i].queue_id;
            nb_rx = rte_eth_rx_burst(portid, queueid,
                         pkts, MAX_PKT_BURST);

            if (nb_rx <= 0)
                continue;

            core_stats_update_rx(nb_rx);

            if (is_unprotected_port(portid)) {
                /* Nothing much to do for inbound inline
                 * decrypted traffic.
                 */
                for (j = 0; j < nb_rx; j++) {
                    uint32_t ptype, proto;

                    pkt = pkts[j];
                    ptype = pkt->packet_type &
                        RTE_PTYPE_L3_MASK;
                    if (ptype == RTE_PTYPE_L3_IPV4)
                        proto = IPPROTO_IP;
                    else
                        proto = IPPROTO_IPV6;

                    send_single_packet(pkt, portid, proto);
                }

                continue;
            }

            /* Free packets if there are no outbound sessions */
            if (unlikely(!ips)) {
                rte_pktmbuf_free_bulk(pkts, nb_rx);
                continue;
            }

            rte_ipsec_pkt_process(ips, pkts, nb_rx);

            /* Send pkts out */
            for (j = 0; j < nb_rx; j++) {
                pkt = pkts[j];

                pkt->l2_len = RTE_ETHER_HDR_LEN;
                send_single_packet(pkt, sa_out_portid,
                           sa_out_proto);
            }
        }
    }
}

static void
ipsec_poll_mode_wrkr_launch(void)
{
    static ipsec_worker_fn_t poll_mode_wrkrs[MAX_F] = {
        [INL_PR_F]        = ipsec_poll_mode_wrkr_inl_pr,
        [INL_PR_F | SS_F] = ipsec_poll_mode_wrkr_inl_pr_ss,
    };
    ipsec_worker_fn_t fn;

    if (!app_sa_prm.enable) {
        fn = ipsec_poll_mode_worker;
    } else {
        fn = poll_mode_wrkrs[wrkr_flags];

        /* Always default to all mode worker */
        if (!fn)
            fn = ipsec_poll_mode_worker;
    }

    /* Launch worker */
    (*fn)();
}

int ipsec_launch_one_lcore(void *args)
{
    struct eh_conf *conf;

    conf = (struct eh_conf *)args;

    if (conf->mode == EH_PKT_TRANSFER_MODE_POLL) {
        /* Run in poll mode */
        ipsec_poll_mode_wrkr_launch();
    } else if (conf->mode == EH_PKT_TRANSFER_MODE_EVENT) {
        /* Run in event mode */
        ipsec_eventmode_worker(conf);
    }
    return 0;
}