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 unsigned long cdev_id_qp = 0; 51 int32_t ret; 52 struct cdev_key key = { 0 }; 53 54 key.lcore_id = (uint8_t)rte_lcore_id(); 55 56 key.cipher_algo = (uint8_t)sa->cipher_algo; 57 key.auth_algo = (uint8_t)sa->auth_algo; 58 59 ret = rte_hash_lookup_data(ipsec_ctx->cdev_map, &key, 60 (void **)&cdev_id_qp); 61 if (ret < 0) { 62 RTE_LOG(ERR, IPSEC, "No cryptodev: core %u, cipher_algo %u, " 63 "auth_algo %u\n", key.lcore_id, key.cipher_algo, 64 key.auth_algo); 65 return -1; 66 } 67 68 RTE_LOG(DEBUG, IPSEC, "Create session for SA spi %u on cryptodev " 69 "%u qp %u\n", sa->spi, 70 ipsec_ctx->tbl[cdev_id_qp].id, 71 ipsec_ctx->tbl[cdev_id_qp].qp); 72 73 sa->crypto_session = rte_cryptodev_sym_session_create( 74 ipsec_ctx->tbl[cdev_id_qp].id, sa->xforms); 75 76 sa->cdev_id_qp = cdev_id_qp; 77 78 return 0; 79 } 80 81 static inline void 82 enqueue_cop(struct cdev_qp *cqp, struct rte_crypto_op *cop) 83 { 84 int32_t ret, i; 85 86 cqp->buf[cqp->len++] = cop; 87 88 if (cqp->len == MAX_PKT_BURST) { 89 ret = rte_cryptodev_enqueue_burst(cqp->id, cqp->qp, 90 cqp->buf, cqp->len); 91 if (ret < cqp->len) { 92 RTE_LOG(DEBUG, IPSEC, "Cryptodev %u queue %u:" 93 " enqueued %u crypto ops out of %u\n", 94 cqp->id, cqp->qp, 95 ret, cqp->len); 96 for (i = ret; i < cqp->len; i++) 97 rte_pktmbuf_free(cqp->buf[i]->sym->m_src); 98 } 99 cqp->in_flight += ret; 100 cqp->len = 0; 101 } 102 } 103 104 static inline void 105 ipsec_enqueue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx, 106 struct rte_mbuf *pkts[], struct ipsec_sa *sas[], 107 uint16_t nb_pkts) 108 { 109 int32_t ret = 0, i; 110 struct ipsec_mbuf_metadata *priv; 111 struct ipsec_sa *sa; 112 113 for (i = 0; i < nb_pkts; i++) { 114 if (unlikely(sas[i] == NULL)) { 115 rte_pktmbuf_free(pkts[i]); 116 continue; 117 } 118 119 rte_prefetch0(sas[i]); 120 rte_prefetch0(pkts[i]); 121 122 priv = get_priv(pkts[i]); 123 sa = sas[i]; 124 priv->sa = sa; 125 126 priv->cop.type = RTE_CRYPTO_OP_TYPE_SYMMETRIC; 127 128 rte_prefetch0(&priv->sym_cop); 129 priv->cop.sym = &priv->sym_cop; 130 131 if ((unlikely(sa->crypto_session == NULL)) && 132 create_session(ipsec_ctx, sa)) { 133 rte_pktmbuf_free(pkts[i]); 134 continue; 135 } 136 137 rte_crypto_op_attach_sym_session(&priv->cop, 138 sa->crypto_session); 139 140 ret = xform_func(pkts[i], sa, &priv->cop); 141 if (unlikely(ret)) { 142 rte_pktmbuf_free(pkts[i]); 143 continue; 144 } 145 146 RTE_ASSERT(sa->cdev_id_qp < ipsec_ctx->nb_qps); 147 enqueue_cop(&ipsec_ctx->tbl[sa->cdev_id_qp], &priv->cop); 148 } 149 } 150 151 static inline int 152 ipsec_dequeue(ipsec_xform_fn xform_func, struct ipsec_ctx *ipsec_ctx, 153 struct rte_mbuf *pkts[], uint16_t max_pkts) 154 { 155 int32_t nb_pkts = 0, ret = 0, i, j, nb_cops; 156 struct ipsec_mbuf_metadata *priv; 157 struct rte_crypto_op *cops[max_pkts]; 158 struct ipsec_sa *sa; 159 struct rte_mbuf *pkt; 160 161 for (i = 0; i < ipsec_ctx->nb_qps && nb_pkts < max_pkts; i++) { 162 struct cdev_qp *cqp; 163 164 cqp = &ipsec_ctx->tbl[ipsec_ctx->last_qp++]; 165 if (ipsec_ctx->last_qp == ipsec_ctx->nb_qps) 166 ipsec_ctx->last_qp %= ipsec_ctx->nb_qps; 167 168 if (cqp->in_flight == 0) 169 continue; 170 171 nb_cops = rte_cryptodev_dequeue_burst(cqp->id, cqp->qp, 172 cops, max_pkts - nb_pkts); 173 174 cqp->in_flight -= nb_cops; 175 176 for (j = 0; j < nb_cops; j++) { 177 pkt = cops[j]->sym->m_src; 178 rte_prefetch0(pkt); 179 180 priv = get_priv(pkt); 181 sa = priv->sa; 182 183 RTE_ASSERT(sa != NULL); 184 185 ret = xform_func(pkt, sa, cops[j]); 186 if (unlikely(ret)) 187 rte_pktmbuf_free(pkt); 188 else 189 pkts[nb_pkts++] = pkt; 190 } 191 } 192 193 /* return packets */ 194 return nb_pkts; 195 } 196 197 uint16_t 198 ipsec_inbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[], 199 uint16_t nb_pkts, uint16_t len) 200 { 201 struct ipsec_sa *sas[nb_pkts]; 202 203 inbound_sa_lookup(ctx->sa_ctx, pkts, sas, nb_pkts); 204 205 ipsec_enqueue(esp_inbound, ctx, pkts, sas, nb_pkts); 206 207 return ipsec_dequeue(esp_inbound_post, ctx, pkts, len); 208 } 209 210 uint16_t 211 ipsec_outbound(struct ipsec_ctx *ctx, struct rte_mbuf *pkts[], 212 uint32_t sa_idx[], uint16_t nb_pkts, uint16_t len) 213 { 214 struct ipsec_sa *sas[nb_pkts]; 215 216 outbound_sa_lookup(ctx->sa_ctx, sa_idx, sas, nb_pkts); 217 218 ipsec_enqueue(esp_outbound, ctx, pkts, sas, nb_pkts); 219 220 return ipsec_dequeue(esp_outbound_post, ctx, pkts, len); 221 } 222