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;
}