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 cpt_pmd_ops_helper_get_mlen_direct_mode(void)18cpt_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 cpt_pmd_ops_helper_get_mlen_sg_mode(void)32cpt_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 += RTE_ALIGN_CEIL((SG_LIST_HDR_SIZE + 39 (RTE_ALIGN_CEIL(CPT_MAX_SG_IN_OUT_CNT, 4) >> 2) * 40 SG_ENTRY_SIZE), 8); 41 len += 2 * COMPLETION_CODE_SIZE; 42 len += 2 * sizeof(cpt_res_s_t); 43 return len; 44 } 45 46 int cpt_pmd_ops_helper_asym_get_mlen(void)47cpt_pmd_ops_helper_asym_get_mlen(void) 48 { 49 uint32_t len; 50 51 /* Get meta len for linear buffer (direct) mode */ 52 len = cpt_pmd_ops_helper_get_mlen_direct_mode(); 53 54 /* Get meta len for asymmetric operations */ 55 len += CPT_MAX_ASYM_OP_NUM_PARAMS * CPT_MAX_ASYM_OP_MOD_LEN; 56 return len; 57 } 58