drivers/crypto/cnxk/cn10k_ipsec_la_ops.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(C) 2021 Marvell.
   3  */
   4
   5 #ifndef __CN10K_IPSEC_LA_OPS_H__
   6 #define __CN10K_IPSEC_LA_OPS_H__
   7
   8 #include <rte_crypto_sym.h>
   9 #include <rte_security.h>
  10
  11 #include "cn10k_cryptodev.h"
  12 #include "cn10k_ipsec.h"
  13 #include "cnxk_cryptodev.h"
  14
  15 static __rte_always_inline int32_t
  16 ipsec_po_out_rlen_get(struct cn10k_ipsec_sa *sess, uint32_t plen)
  17 {
  18         uint32_t enc_payload_len;
  19
  20         enc_payload_len =
  21                 RTE_ALIGN_CEIL(plen + sess->roundup_len, sess->roundup_byte);
  22
  23         return sess->partial_len + enc_payload_len;
  24 }
  25
  26 static __rte_always_inline int
  27 process_outb_sa(struct rte_crypto_op *cop, struct cn10k_ipsec_sa *sess,
  28                 struct cpt_inst_s *inst)
  29 {
  30         struct rte_crypto_sym_op *sym_op = cop->sym;
  31         struct rte_mbuf *m_src = sym_op->m_src;
  32         uint32_t dlen, rlen, extend_tail;
  33         char *mdata;
  34
  35         dlen = rte_pktmbuf_pkt_len(m_src);
  36         rlen = ipsec_po_out_rlen_get(sess, dlen);
  37
  38         extend_tail = rlen - dlen;
  39
  40         mdata = rte_pktmbuf_append(m_src, extend_tail);
  41         if (unlikely(mdata == NULL)) {
  42                 plt_dp_err("Not enough tail room");
  43                 return -ENOMEM;
  44         }
  45
  46         /* Prepare CPT instruction */
  47         inst->w4.u64 = sess->inst.w4;
  48         inst->w4.s.dlen = dlen;
  49         inst->dptr = rte_pktmbuf_iova(m_src);
  50         inst->rptr = inst->dptr;
  51
  52         return 0;
  53 }
  54
  55 static __rte_always_inline int
  56 process_inb_sa(struct rte_crypto_op *cop, struct cn10k_ipsec_sa *sa,
  57                struct cpt_inst_s *inst)
  58 {
  59         struct rte_crypto_sym_op *sym_op = cop->sym;
  60         struct rte_mbuf *m_src = sym_op->m_src;
  61         uint32_t dlen;
  62
  63         dlen = rte_pktmbuf_pkt_len(m_src);
  64
  65         /* Prepare CPT instruction */
  66         inst->w4.u64 = sa->inst.w4;
  67         inst->w4.s.dlen = dlen;
  68         inst->dptr = rte_pktmbuf_iova(m_src);
  69         inst->rptr = inst->dptr;
  70
  71         return 0;
  72 }
  73
  74 #endif /* __CN10K_IPSEC_LA_OPS_H__ */