1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2016 Intel Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Intel Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 #include <sys/types.h> 34 #include <netinet/in.h> 35 #include <netinet/ip.h> 36 37 #include <rte_branch_prediction.h> 38 #include <rte_log.h> 39 #include <rte_crypto.h> 40 #include <rte_cryptodev.h> 41 #include <rte_mbuf.h> 42 #include <rte_hash.h> 43 44 #include "ipsec.h" 45 #include "esp.h" 46 47 static inline int 48 create_session(struct ipsec_ctx *ipsec_ctx __rte_unused, struct ipsec_sa *sa) 49 { 50 struct rte_cryptodev_info cdev_info; 51 unsigned long cdev_id_qp = 0; 52 int32_t ret; 53 struct cdev_key key = { 0 }; 54 55 key.lcore_id = (uint8_t)rte_lcore_id(); 56 57 key.cipher_algo = (uint8_t)sa->cipher_algo; 58 key.auth_algo = (uint8_t)sa->auth_algo; 59 60 ret = rte_hash_lookup_data(ipsec_ctx->cdev_map, &key, 61 (void **)&cdev_id_qp); 62 if (ret < 0) { 63 RTE_LOG(ERR, IPSEC, "No cryptodev: core %u, cipher_algo %u, " 64 "auth_algo %u\n", key.lcore_id, key.cipher_algo, 65 key.auth_algo); 66 return -1; 67 } 68 69 RTE_LOG_DP(DEBUG, IPSEC, "Create session for SA spi %u on cryptodev " 70 "%u qp %u\n", sa->spi, 71 ipsec_ctx->tbl[cdev_id_qp].id, 72 ipsec_ctx->tbl[cdev_id_qp].qp); 73 74 sa->crypto_session = rte_cryptodev_sym_session_create( 75 ipsec_ctx->tbl[cdev_id_qp].id, sa->xforms); 76 77 rte_cryptodev_info_get(ipsec_ctx->tbl[cdev_id_qp].id, &cdev_info); 78 if (cdev_info.sym.max_nb_sessions_per_qp > 0) { 79 ret = rte_cryptodev_queue_pair_attach_sym_session( 80 ipsec_ctx->tbl[cdev_id_qp].qp, 81 sa->crypto_session); 82 if (ret < 0) { 83 RTE_LOG(ERR, IPSEC, 84 "Session cannot be attached to qp %u ", 85 ipsec_ctx->tbl[cdev_id_qp].qp); 86 return -1; 87 } 88 } 89 sa->cdev_id_qp = cdev_id_qp; 90 91 return 0; 92 } 93 94 static inline void 95 enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop) 96 { 97 int32_t ret, i; 98 99 cqp->buf[cqp->len++] = cop; 100 101 if (cqp->len == MAX_PKT_BURST) { 102 ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp, 103 cqp->buf, cqp->len); 104 if (ret < cqp->len) { 105 RTE_LOG_DP(DEBUG, IPSEC, "Cryptodev %u queue %u:" 106 " enqueued %u crypto ops out of %u\n", 107 cqp->id, cqp->qp, 108 ret, cqp->len); 109 for (i = ret; i < cqp->len; i++) 110 rte_pktmbuf_free(cqp->buf[i]->sym->m_src); 111 } 112 cqp->in_flight += ret; 113 cqp->len = 0; 114 } 115 } 116 117 static inline void 118 ipsec_enqueue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx, 119 struct rte_mbuf *pkts[], struct ipsec_sa *sas[], 120 uint16_t nb_pkts) 121 { 122 int32_t ret = 0, i; 123 struct ipsec_mbuf_metadata *priv; 124 struct ipsec_sa *sa; 125 126 for (i = 0; i < nb_pkts; i++) { 127 if (unlikely(sas[i] == NULL)) { 128 rte_pktmbuf_free(pkts[i]); 129 continue; 130 } 131 132 rte_prefetch0(sas[i]); 133 rte_prefetch0(pkts[i]); 134 135 priv = get_priv(pkts[i]); 136 sa = sas[i]; 137 priv->sa = sa; 138 139 priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; 140 priv->cop.status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED; 141 142 rte_prefetch0(&priv->sym_cop); 143 priv->cop.sym = &priv->sym_cop; 144 145 if ((unlikely(sa->crypto_session == NULL)) && 146 create_session(ipsec_ctx, sa)) { 147 rte_pktmbuf_free(pkts[i]); 148 continue; 149 } 150 151 rte_crypto_op_attach_sym_session(&priv->cop, 152 sa->crypto_session); 153 154 ret = xform_func(pkts[i], sa, &priv->cop); 155 if (unlikely(ret)) { 156 rte_pktmbuf_free(pkts[i]); 157 continue; 158 } 159 160 RTE_ASSERT(sa->cdev_id_qp < ipsec_ctx->nb_qps); 161 enqueue_cop(&ipsec_ctx->tbl[sa->cdev_id_qp], &priv->cop); 162 } 163 } 164 165 static inline int 166 ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx, 167 struct rte_mbuf *pkts[], uint16_t max_pkts) 168 { 169 int32_t nb_pkts = 0, ret = 0, i, j, nb_cops; 170 struct ipsec_mbuf_metadata *priv; 171 struct rte_crypto_op *cops[max_pkts]; 172 struct ipsec_sa *sa; 173 struct rte_mbuf *pkt; 174 175 for (i = 0; i < ipsec_ctx->nb_qps && nb_pkts < max_pkts; i++) { 176 struct cdev_qp *cqp; 177 178 cqp = &ipsec_ctx->tbl[ipsec_ctx->last_qp++]; 179 if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps) 180 ipsec_ctx->last_qp %= ipsec_ctx->nb_qps; 181 182 if (cqp->in_flight == 0) 183 continue; 184 185 nb_cops = rte_cryptodev_dequeue_burst(cqp->id, cqp->qp, 186 cops, max_pkts - nb_pkts); 187 188 cqp->in_flight -= nb_cops; 189 190 for (j = 0; j < nb_cops; j++) { 191 pkt = cops[j]->sym->m_src; 192 rte_prefetch0(pkt); 193 194 priv = get_priv(pkt); 195 sa = priv->sa; 196 197 RTE_ASSERT(sa != NULL); 198 199 ret = xform_func(pkt, sa, cops[j]); 200 if (unlikely(ret)) 201 rte_pktmbuf_free(pkt); 202 else 203 pkts[nb_pkts++] = pkt; 204 } 205 } 206 207 /* return packets */ 208 return nb_pkts; 209 } 210 211 uint16_t 212 ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[], 213 uint16_t nb_pkts, uint16_t len) 214 { 215 struct ipsec_sa *sas[nb_pkts]; 216 217 inbound_sa_lookup(ctx->sa_ctx, pkts, sas, nb_pkts); 218 219 ipsec_enqueue(esp_inbound, ctx, pkts, sas, nb_pkts); 220 221 return ipsec_dequeue(esp_inbound_post, ctx, pkts, len); 222 } 223 224 uint16_t 225 ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[], 226 uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len) 227 { 228 struct ipsec_sa *sas[nb_pkts]; 229 230 outbound_sa_lookup(ctx->sa_ctx, sa_idx, sas, nb_pkts); 231 232 ipsec_enqueue(esp_outbound, ctx, pkts, sas, nb_pkts); 233 234 return ipsec_dequeue(esp_outbound_post, ctx, pkts, len); 235 } 236