examples/ip_pipeline/swq.c

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2018 Intel Corporation
 */
 
#include <stdlib.h>
#include <string.h>
 
#include <rte_string_fns.h>
 
#include "swq.h"
 
static struct swq_list swq_list;
 
int
swq_init(void)
{
    TAILQ_INIT(&swq_list);
 
    return 0;
}
 
struct swq *
swq_find(const char *name)
{
    struct swq *swq;
 
    if (name == NULL)
        return NULL;
 
    TAILQ_FOREACH(swq, &swq_list, node)
        if (strcmp(swq->name, name) == 0)
            return swq;
 
    return NULL;
}
 
struct swq *
swq_create(const char *name, struct swq_params *params)
{
    struct swq *swq;
    struct rte_ring *r;
    unsigned int flags = RING_F_SP_ENQ | RING_F_SC_DEQ;
 
    /* Check input params */
    if ((name == NULL) ||
        swq_find(name) ||
        (params == NULL) ||
        (params->size == 0))
        return NULL;
 
    /* Resource create */
    r = rte_ring_create(
        name,
        params->size,
        params->cpu_id,
        flags);
 
    if (r == NULL)
        return NULL;
 
    /* Node allocation */
    swq = calloc(1, sizeof(struct swq));
    if (swq == NULL) {
        rte_ring_free(r);
        return NULL;
    }
 
    /* Node fill in */
    strlcpy(swq->name, name, sizeof(swq->name));
    swq->r = r;
 
    /* Node add to list */
    TAILQ_INSERT_TAIL(&swq_list, swq, node);
 
    return swq;
}