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 #define CPT_MAX_ASYM_OP_NUM_PARAMS 5
  15 #define CPT_MAX_ASYM_OP_MOD_LEN 1024
  16
  17 int32_t
  18 cpt_pmd_ops_helper_get_mlen_direct_mode(void)
  19 {
  20         uint32_t len = 0;
  21
  22         /* Request structure */
  23         len = sizeof(struct cpt_request_info);
  24
  25         /* CPT HW result structure plus extra as it is aligned */
  26         len += 2*sizeof(cpt_res_s_t);
  27
  28         return len;
  29 }
  30
  31 int
  32 cpt_pmd_ops_helper_get_mlen_sg_mode(void)
  33 {
  34         uint32_t len = 0;
  35
  36         len += sizeof(struct cpt_request_info);
  37         len += CPT_OFFSET_CONTROL_BYTES + CPT_MAX_IV_LEN;
  38         len += ROUNDUP8(SG_LIST_HDR_SIZE +
  39                         (ROUNDUP4(CPT_MAX_SG_IN_OUT_CNT) >> 2) * SG_ENTRY_SIZE);
  40         len += 2 * COMPLETION_CODE_SIZE;
  41         len += 2 * sizeof(cpt_res_s_t);
  42         return len;
  43 }
  44
  45 int
  46 cpt_pmd_ops_helper_asym_get_mlen(void)
  47 {
  48         uint32_t len;
  49
  50         /* Get meta len for linear buffer (direct) mode */
  51         len = cpt_pmd_ops_helper_get_mlen_direct_mode();
  52
  53         /* Get meta len for asymmetric operations */
  54         len += CPT_MAX_ASYM_OP_NUM_PARAMS * CPT_MAX_ASYM_OP_MOD_LEN;
  55         return len;
  56 }