rte_ipsec_group.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2018 Intel Corporation
 */

#ifndef _RTE_IPSEC_GROUP_H_
#define _RTE_IPSEC_GROUP_H_

#ifdef __cplusplus
extern "C" {
#endif

struct rte_ipsec_group {
    union {
        uint64_t val;
        void *ptr;
    } id; 
    struct rte_mbuf **m;  
    uint32_t cnt;         
    int32_t rc;           
};

static inline struct rte_ipsec_session *
rte_ipsec_ses_from_crypto(const struct rte_crypto_op *cop)
{
    const struct rte_security_session *ss;
    const struct rte_cryptodev_sym_session *cs;

    if (cop->sess_type == RTE_CRYPTO_OP_SECURITY_SESSION) {
        ss = cop->sym[0].sec_session;
        return (void *)(uintptr_t)ss->opaque_data;
    } else if (cop->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
        cs = cop->sym[0].session;
        return (void *)(uintptr_t)cs->opaque_data;
    }
    return NULL;
}

static inline uint16_t
rte_ipsec_pkt_crypto_group(const struct rte_crypto_op *cop[],
    struct rte_mbuf *mb[], struct rte_ipsec_group grp[], uint16_t num)
{
    uint32_t i, j, k, n;
    void *ns, *ps;
    struct rte_mbuf *m, *dr[num];

    j = 0;
    k = 0;
    n = 0;
    ps = NULL;

    for (i = 0; i != num; i++) {

        m = cop[i]->sym[0].m_src;
        ns = cop[i]->sym[0].session;

        m->ol_flags |= PKT_RX_SEC_OFFLOAD;
        if (cop[i]->status != RTE_CRYPTO_OP_STATUS_SUCCESS)
            m->ol_flags |= PKT_RX_SEC_OFFLOAD_FAILED;

        /* no valid session found */
        if (ns == NULL) {
            dr[k++] = m;
            continue;
        }

        /* different SA */
        if (ps != ns) {

            /*
             * we already have an open group - finalize it,
             * then open a new one.
             */
            if (ps != NULL) {
                grp[n].id.ptr =
                    rte_ipsec_ses_from_crypto(cop[i - 1]);
                grp[n].cnt = mb + j - grp[n].m;
                n++;
            }

            /* start new group */
            grp[n].m = mb + j;
            ps = ns;
        }

        mb[j++] = m;
    }

    /* finalise last group */
    if (ps != NULL) {
        grp[n].id.ptr = rte_ipsec_ses_from_crypto(cop[i - 1]);
        grp[n].cnt = mb + j - grp[n].m;
        n++;
    }

    /* copy mbufs with unknown session beyond recognised ones */
    if (k != 0 && k != num) {
        for (i = 0; i != k; i++)
            mb[j + i] = dr[i];
    }

    return n;
}

#ifdef __cplusplus
}
#endif

#endif /* _RTE_IPSEC_GROUP_H_ */