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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 Cavium, Inc
*/
#ifndef _CPT_REQUEST_MGR_H_
#define _CPT_REQUEST_MGR_H_
#include <rte_branch_prediction.h>
#include <rte_cycles.h>
#include "cpt_common.h"
#include "cpt_mcode_defines.h"
#if CPT_MODEL == CRYPTO_OCTEONTX
#include "../../crypto/octeontx/otx_cryptodev_hw_access.h"
#endif
/*
* This file defines the agreement between the common layer and the individual
* crypto drivers for OCTEON TX series. Datapath in otx* directory include this
* file and all these functions are static inlined for better performance.
*
*/
/*
* Get the session size
*
* This function is used in the data path.
*
* @return
* - session size
*/
static __rte_always_inline unsigned int
cpt_get_session_size(void)
{
unsigned int ctx_len = sizeof(struct cpt_ctx);
return (sizeof(struct cpt_sess_misc) + RTE_ALIGN_CEIL(ctx_len, 8));
}
static __rte_always_inline int32_t __hot
cpt_enqueue_req(struct cpt_instance *instance, struct pending_queue *pqueue,
void *req)
{
struct cpt_request_info *user_req = (struct cpt_request_info *)req;
int32_t ret = 0;
if (unlikely(!req))
return 0;
if (unlikely(pqueue->pending_count >= DEFAULT_CMD_QLEN))
return -EAGAIN;
fill_cpt_inst(instance, req);
CPT_LOG_DP_DEBUG("req: %p op: %p ", req, user_req->op);
/* Fill time_out cycles */
user_req->time_out = rte_get_timer_cycles() +
DEFAULT_COMMAND_TIMEOUT * rte_get_timer_hz();
user_req->extra_time = 0;
/* Default mode of software queue */
mark_cpt_inst(instance);
pqueue->rid_queue[pqueue->enq_tail].rid =
(uintptr_t)user_req;
/* We will use soft queue length here to limit
* requests
*/
MOD_INC(pqueue->enq_tail, DEFAULT_CMD_QLEN);
pqueue->pending_count += 1;
CPT_LOG_DP_DEBUG("Submitted NB cmd with request: %p "
"op: %p", user_req, user_req->op);
return ret;
}
static __rte_always_inline int __hot
cpt_pmd_crypto_operation(struct cpt_instance *instance,
struct rte_crypto_op *op, struct pending_queue *pqueue,
uint8_t cpt_driver_id)
{
struct cpt_sess_misc *sess = NULL;
struct rte_crypto_sym_op *sym_op = op->sym;
void *prep_req = NULL, *mdata = NULL;
int ret = 0;
uint64_t cpt_op;
struct cpt_vf *cptvf = (struct cpt_vf *)instance;
if (unlikely(op->sess_type == RTE_CRYPTO_OP_SESSIONLESS)) {
int sess_len;
sess_len = cpt_get_session_size();
sess = rte_calloc(__func__, 1, sess_len, 8);
if (!sess)
return -ENOMEM;
sess->ctx_dma_addr = rte_malloc_virt2iova(sess) +
sizeof(struct cpt_sess_misc);
ret = instance_session_cfg(sym_op->xform, (void *)sess);
if (unlikely(ret))
return -EINVAL;
} else {
sess = (struct cpt_sess_misc *)
get_sym_session_private_data(sym_op->session,
cpt_driver_id);
}
cpt_op = sess->cpt_op;
mdata = &(cptvf->meta_info);
if (likely(cpt_op & CPT_OP_CIPHER_MASK))
prep_req = fill_fc_params(op, sess, &mdata, &ret);
else
prep_req = fill_digest_params(op, sess, &mdata, &ret);
if (unlikely(!prep_req)) {
CPT_LOG_DP_ERR("prep cryto req : op %p, cpt_op 0x%x "
"ret 0x%x", op, (unsigned int)cpt_op, ret);
goto req_fail;
}
/* Enqueue prepared instruction to HW */
ret = cpt_enqueue_req(instance, pqueue, prep_req);
if (unlikely(ret)) {
if (unlikely(ret == -EAGAIN))
goto req_fail;
CPT_LOG_DP_ERR("Error enqueing crypto request : error "
"code %d", ret);
goto req_fail;
}
return 0;
req_fail:
if (mdata)
free_op_meta(mdata, cptvf->meta_info.cptvf_meta_pool);
return ret;
}
static __rte_always_inline int32_t __hot
cpt_dequeue_burst(struct cpt_instance *instance, uint16_t cnt,
void *resp[], uint8_t cc[], struct pending_queue *pqueue)
{
struct cpt_request_info *user_req;
struct rid *rid_e;
int i, count, pcount;
uint8_t ret;
pcount = pqueue->pending_count;
count = (cnt > pcount) ? pcount : cnt;
for (i = 0; i < count; i++) {
rid_e = &pqueue->rid_queue[pqueue->deq_head];
user_req = (struct cpt_request_info *)(rid_e->rid);
if (likely((i+1) < count))
rte_prefetch_non_temporal((void *)rid_e[1].rid);
ret = check_nb_command_id(user_req, instance);
if (unlikely(ret == ERR_REQ_PENDING)) {
/* Stop checking for completions */
break;
}
/* Return completion code and op handle */
cc[i] = (uint8_t)ret;
resp[i] = user_req->op;
CPT_LOG_DP_DEBUG("Request %p Op %p completed with code %d",
user_req, user_req->op, ret);
MOD_INC(pqueue->deq_head, DEFAULT_CMD_QLEN);
pqueue->pending_count -= 1;
}
return i;
}
#endif /* _CPT_REQUEST_MGR_H_ */
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