ceph/src/spdk/dpdk/drivers/common/cpt/cpt_pmd_ops_helper.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018 Cavium, Inc
   3  */
   4
   5 #include <rte_common.h>
   6
   7 #include "cpt_common.h"
   8 #include "cpt_hw_types.h"
   9 #include "cpt_mcode_defines.h"
  10 #include "cpt_pmd_ops_helper.h"
  11
  12 #define CPT_MAX_IV_LEN 16
  13 #define CPT_OFFSET_CONTROL_BYTES 8
  14
  15 int32_t
  16 cpt_pmd_ops_helper_get_mlen_direct_mode(void)
  17 {
  18         uint32_t len = 0;
  19
  20         /* Request structure */
  21         len = sizeof(struct cpt_request_info);
  22
  23         /* CPT HW result structure plus extra as it is aligned */
  24         len += 2*sizeof(cpt_res_s_t);
  25
  26         return len;
  27 }
  28
  29 int
  30 cpt_pmd_ops_helper_get_mlen_sg_mode(void)
  31 {
  32         uint32_t len = 0;
  33
  34         len += sizeof(struct cpt_request_info);
  35         len += CPT_OFFSET_CONTROL_BYTES + CPT_MAX_IV_LEN;
  36         len += ROUNDUP8(SG_LIST_HDR_SIZE +
  37                         (ROUNDUP4(CPT_MAX_SG_IN_OUT_CNT) >> 2) * SG_ENTRY_SIZE);
  38         len += 2 * COMPLETION_CODE_SIZE;
  39         len += 2 * sizeof(cpt_res_s_t);
  40         return len;
  41 }