crypto/cnxk/cn10k_ipsec.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2021 Marvell.
   3  */
   4
   5 #include <rte_malloc.h>
   6 #include <rte_cryptodev.h>
   7 #include <rte_esp.h>
   8 #include <rte_ip.h>
   9 #include <rte_security.h>
  10 #include <rte_security_driver.h>
  11 #include <rte_udp.h>
  12
  13 #include "cnxk_cryptodev.h"
  14 #include "cnxk_ipsec.h"
  15 #include "cnxk_security.h"
  16 #include "cn10k_ipsec.h"
  17
  18 #include "roc_api.h"
  19
  20 static uint64_t
  21 ipsec_cpt_inst_w7_get(struct roc_cpt *roc_cpt, void *sa)
  22 {
  23         union cpt_inst_w7 w7;
  24
  25         w7.u64 = 0;
  26         w7.s.egrp = roc_cpt->eng_grp[CPT_ENG_TYPE_IE];
  27         w7.s.ctx_val = 1;
  28         w7.s.cptr = (uint64_t)sa;
  29         rte_mb();
  30
  31         return w7.u64;
  32 }
  33
  34 static int
  35 cn10k_ipsec_outb_sa_create(struct roc_cpt *roc_cpt,
  36                            struct rte_security_ipsec_xform *ipsec_xfrm,
  37                            struct rte_crypto_sym_xform *crypto_xfrm,
  38                            struct rte_security_session *sec_sess)
  39 {
  40         struct roc_ot_ipsec_outb_sa *out_sa;
  41         struct cnxk_ipsec_outb_rlens rlens;
  42         struct cn10k_sec_session *sess;
  43         struct cn10k_ipsec_sa *sa;
  44         union cpt_inst_w4 inst_w4;
  45         int ret;
  46
  47         sess = get_sec_session_private_data(sec_sess);
  48         sa = &sess->sa;
  49         out_sa = &sa->out_sa;
  50
  51         memset(out_sa, 0, sizeof(struct roc_ot_ipsec_outb_sa));
  52
  53         /* Translate security parameters to SA */
  54         ret = cnxk_ot_ipsec_outb_sa_fill(out_sa, ipsec_xfrm, crypto_xfrm);
  55         if (ret)
  56                 return ret;
  57
  58         sa->inst.w7 = ipsec_cpt_inst_w7_get(roc_cpt, sa);
  59
  60         /* Get Rlen calculation data */
  61         ret = cnxk_ipsec_outb_rlens_get(&rlens, ipsec_xfrm, crypto_xfrm);
  62         if (ret)
  63                 return ret;
  64
  65         sa->max_extended_len = rlens.max_extended_len;
  66
  67         /* pre-populate CPT INST word 4 */
  68         inst_w4.u64 = 0;
  69         inst_w4.s.opcode_major = ROC_IE_OT_MAJOR_OP_PROCESS_OUTBOUND_IPSEC;
  70         inst_w4.s.param1 = 0;
  71         sa->inst.w4 = inst_w4.u64;
  72
  73         return 0;
  74 }
  75
  76 static int
  77 cn10k_ipsec_inb_sa_create(struct roc_cpt *roc_cpt,
  78                           struct rte_security_ipsec_xform *ipsec_xfrm,
  79                           struct rte_crypto_sym_xform *crypto_xfrm,
  80                           struct rte_security_session *sec_sess)
  81 {
  82         struct roc_ot_ipsec_inb_sa *in_sa;
  83         struct cn10k_sec_session *sess;
  84         struct cn10k_ipsec_sa *sa;
  85         union cpt_inst_w4 inst_w4;
  86         int ret;
  87
  88         sess = get_sec_session_private_data(sec_sess);
  89         sa = &sess->sa;
  90         in_sa = &sa->in_sa;
  91
  92         /* Translate security parameters to SA */
  93         ret = cnxk_ot_ipsec_inb_sa_fill(in_sa, ipsec_xfrm, crypto_xfrm);
  94         if (ret)
  95                 return ret;
  96
  97         /* TODO add support for antireplay */
  98         sa->in_sa.w0.s.ar_win = 0;
  99
 100         /* TODO add support for udp encap */
 101
 102         sa->inst.w7 = ipsec_cpt_inst_w7_get(roc_cpt, sa);
 103
 104         /* pre-populate CPT INST word 4 */
 105         inst_w4.u64 = 0;
 106         inst_w4.s.opcode_major = ROC_IE_OT_MAJOR_OP_PROCESS_INBOUND_IPSEC;
 107
 108         /* Disable checksum verification for now */
 109         inst_w4.s.param1 = 7;
 110         sa->inst.w4 = inst_w4.u64;
 111
 112         return 0;
 113 }
 114
 115 static int
 116 cn10k_ipsec_session_create(void *dev,
 117                            struct rte_security_ipsec_xform *ipsec_xfrm,
 118                            struct rte_crypto_sym_xform *crypto_xfrm,
 119                            struct rte_security_session *sess)
 120 {
 121         struct rte_cryptodev *crypto_dev = dev;
 122         struct roc_cpt *roc_cpt;
 123         struct cnxk_cpt_vf *vf;
 124         int ret;
 125
 126         vf = crypto_dev->data->dev_private;
 127         roc_cpt = &vf->cpt;
 128
 129         if (crypto_dev->data->queue_pairs[0] == NULL) {
 130                 plt_err("Setup cpt queue pair before creating security session");
 131                 return -EPERM;
 132         }
 133
 134         ret = cnxk_ipsec_xform_verify(ipsec_xfrm, crypto_xfrm);
 135         if (ret)
 136                 return ret;
 137
 138         if (ipsec_xfrm->direction == RTE_SECURITY_IPSEC_SA_DIR_INGRESS)
 139                 return cn10k_ipsec_inb_sa_create(roc_cpt, ipsec_xfrm,
 140                                                  crypto_xfrm, sess);
 141         else
 142                 return cn10k_ipsec_outb_sa_create(roc_cpt, ipsec_xfrm,
 143                                                   crypto_xfrm, sess);
 144 }
 145
 146 static int
 147 cn10k_sec_session_create(void *device, struct rte_security_session_conf *conf,
 148                          struct rte_security_session *sess,
 149                          struct rte_mempool *mempool)
 150 {
 151         struct cn10k_sec_session *priv;
 152         int ret;
 153
 154         if (conf->action_type != RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL)
 155                 return -EINVAL;
 156
 157         if (rte_mempool_get(mempool, (void **)&priv)) {
 158                 plt_err("Could not allocate security session private data");
 159                 return -ENOMEM;
 160         }
 161
 162         set_sec_session_private_data(sess, priv);
 163
 164         if (conf->protocol != RTE_SECURITY_PROTOCOL_IPSEC) {
 165                 ret = -ENOTSUP;
 166                 goto mempool_put;
 167         }
 168         ret = cn10k_ipsec_session_create(device, &conf->ipsec,
 169                                          conf->crypto_xform, sess);
 170         if (ret)
 171                 goto mempool_put;
 172
 173         return 0;
 174
 175 mempool_put:
 176         rte_mempool_put(mempool, priv);
 177         set_sec_session_private_data(sess, NULL);
 178         return ret;
 179 }
 180
 181 static int
 182 cn10k_sec_session_destroy(void *device __rte_unused,
 183                           struct rte_security_session *sess)
 184 {
 185         struct cn10k_sec_session *priv;
 186         struct rte_mempool *sess_mp;
 187
 188         priv = get_sec_session_private_data(sess);
 189
 190         if (priv == NULL)
 191                 return 0;
 192
 193         sess_mp = rte_mempool_from_obj(priv);
 194
 195         set_sec_session_private_data(sess, NULL);
 196         rte_mempool_put(sess_mp, priv);
 197
 198         return 0;
 199 }
 200
 201 static unsigned int
 202 cn10k_sec_session_get_size(void *device __rte_unused)
 203 {
 204         return sizeof(struct cn10k_sec_session);
 205 }
 206
 207 /* Update platform specific security ops */
 208 void
 209 cn10k_sec_ops_override(void)
 210 {
 211         /* Update platform specific ops */
 212         cnxk_sec_ops.session_create = cn10k_sec_session_create;
 213         cnxk_sec_ops.session_destroy = cn10k_sec_session_destroy;
 214         cnxk_sec_ops.session_get_size = cn10k_sec_session_get_size;
 215 }