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Diffstat (limited to 'examples/ipsec-secgw/ipsec.c')
| -rw-r--r-- | examples/ipsec-secgw/ipsec.c | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/examples/ipsec-secgw/ipsec.c b/examples/ipsec-secgw/ipsec.c new file mode 100644 index 00000000..baf30d4b --- /dev/null +++ b/examples/ipsec-secgw/ipsec.c @@ -0,0 +1,203 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2016 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include <sys/types.h> +#include <netinet/in.h> +#include <netinet/ip.h> + +#include <rte_branch_prediction.h> +#include <rte_log.h> +#include <rte_crypto.h> +#include <rte_cryptodev.h> +#include <rte_mbuf.h> +#include <rte_hash.h> + +#include "ipsec.h" + +static inline int +create_session(struct ipsec_ctx *ipsec_ctx __rte_unused, struct ipsec_sa *sa) +{ + uint32_t cdev_id_qp = 0; + int32_t ret; + struct cdev_key key = { 0 }; + + key.lcore_id = (uint8_t)rte_lcore_id(); + + key.cipher_algo = (uint8_t)sa->cipher_algo; + key.auth_algo = (uint8_t)sa->auth_algo; + + ret = rte_hash_lookup_data(ipsec_ctx->cdev_map, &key, + (void **)&cdev_id_qp); + if (ret < 0) { + IPSEC_LOG(ERR, IPSEC, "No cryptodev: core %u, cipher_algo %u, " + "auth_algo %u\n", key.lcore_id, key.cipher_algo, + key.auth_algo); + return -1; + } + + IPSEC_LOG(DEBUG, IPSEC, "Create session for SA spi %u on cryptodev " + "%u qp %u\n", sa->spi, ipsec_ctx->tbl[cdev_id_qp].id, + ipsec_ctx->tbl[cdev_id_qp].qp); + + sa->crypto_session = rte_cryptodev_sym_session_create( + ipsec_ctx->tbl[cdev_id_qp].id, sa->xforms); + + sa->cdev_id_qp = cdev_id_qp; + + return 0; +} + +static inline void +enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop) +{ + int ret, i; + + cqp->buf[cqp->len++] = cop; + + if (cqp->len == MAX_PKT_BURST) { + ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp, + cqp->buf, cqp->len); + if (ret < cqp->len) { + IPSEC_LOG(DEBUG, IPSEC, "Cryptodev %u queue %u:" + " enqueued %u crypto ops out of %u\n", + cqp->id, cqp->qp, + ret, cqp->len); + for (i = ret; i < cqp->len; i++) + rte_pktmbuf_free(cqp->buf[i]->sym->m_src); + } + cqp->in_flight += ret; + cqp->len = 0; + } +} + +static inline uint16_t +ipsec_processing(struct ipsec_ctx *ipsec_ctx, struct rte_mbuf *pkts[], + struct ipsec_sa *sas[], uint16_t nb_pkts, uint16_t max_pkts) +{ + int ret = 0, i, j, nb_cops; + struct ipsec_mbuf_metadata *priv; + struct rte_crypto_op *cops[max_pkts]; + struct ipsec_sa *sa; + struct rte_mbuf *pkt; + + for (i = 0; i < nb_pkts; i++) { + rte_prefetch0(sas[i]); + rte_prefetch0(pkts[i]); + + priv = get_priv(pkts[i]); + sa = sas[i]; + priv->sa = sa; + + IPSEC_ASSERT(sa != NULL); + + priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; + + rte_prefetch0(&priv->sym_cop); + priv->cop.sym = &priv->sym_cop; + + if ((unlikely(sa->crypto_session == NULL)) && + create_session(ipsec_ctx, sa)) { + rte_pktmbuf_free(pkts[i]); + continue; + } + + rte_crypto_op_attach_sym_session(&priv->cop, + sa->crypto_session); + + ret = sa->pre_crypto(pkts[i], sa, &priv->cop); + if (unlikely(ret)) { + rte_pktmbuf_free(pkts[i]); + continue; + } + + IPSEC_ASSERT(sa->cdev_id_qp < ipsec_ctx->nb_qps); + enqueue_cop(&ipsec_ctx->tbl[sa->cdev_id_qp], &priv->cop); + } + + nb_pkts = 0; + for (i = 0; i < ipsec_ctx->nb_qps && nb_pkts < max_pkts; i++) { + struct cdev_qp *cqp; + + cqp = &ipsec_ctx->tbl[ipsec_ctx->last_qp++]; + if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps) + ipsec_ctx->last_qp %= ipsec_ctx->nb_qps; + + if (cqp->in_flight == 0) + continue; + + nb_cops = rte_cryptodev_dequeue_burst(cqp->id, cqp->qp, + cops, max_pkts - nb_pkts); + + cqp->in_flight -= nb_cops; + + for (j = 0; j < nb_cops; j++) { + pkt = cops[j]->sym->m_src; + rte_prefetch0(pkt); + + priv = get_priv(pkt); + sa = priv->sa; + + IPSEC_ASSERT(sa != NULL); + + ret = sa->post_crypto(pkt, sa, cops[j]); + if (unlikely(ret)) + rte_pktmbuf_free(pkt); + else + pkts[nb_pkts++] = pkt; + } + } + + /* return packets */ + return nb_pkts; +} + +uint16_t +ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[], + uint16_t nb_pkts, uint16_t len) +{ + struct ipsec_sa *sas[nb_pkts]; + + inbound_sa_lookup(ctx->sa_ctx, pkts, sas, nb_pkts); + + return ipsec_processing(ctx, pkts, sas, nb_pkts, len); +} + +uint16_t +ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[], + uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len) +{ + struct ipsec_sa *sas[nb_pkts]; + + outbound_sa_lookup(ctx->sa_ctx, sa_idx, sas, nb_pkts); + + return ipsec_processing(ctx, pkts, sas, nb_pkts, len); +} |