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/*-
* BSD LICENSE
*
* Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/queue.h>
#include <stdint.h>
#include <errno.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <inttypes.h>
#include <rte_memory.h>
#include <rte_memzone.h>
#include <rte_launch.h>
#include <rte_tailq.h>
#include <rte_eal.h>
#include <rte_eal_memconfig.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_memory.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
#include <rte_log.h>
#include <rte_string_fns.h>
#include "eal_private.h"
/**
* Name of tailq_head
*/
const char* rte_tailq_names[RTE_MAX_TAILQ] = {
#define rte_tailq_elem(idx, name) name,
#include <rte_tailq_elem.h>
};
struct rte_tailq_head *
rte_eal_tailq_lookup(const char *name)
{
unsigned i;
struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
if (name == NULL)
return NULL;
for (i = 0; i < RTE_MAX_TAILQ; i++) {
if (rte_tailq_names[i] == NULL)
continue;
if (!strncmp(name, rte_tailq_names[i], RTE_TAILQ_NAMESIZE-1))
return &mcfg->tailq_head[i];
}
return NULL;
}
inline struct rte_tailq_head *
rte_eal_tailq_lookup_by_idx(const unsigned tailq_idx)
{
struct rte_mem_config *mcfg = rte_eal_get_configuration()->mem_config;
if (tailq_idx >= RTE_MAX_TAILQ) {
RTE_LOG(ERR, EAL, "%s(): No more room in config\n", __func__);
return NULL;
}
return &mcfg->tailq_head[tailq_idx];
}
struct rte_tailq_head *
rte_eal_tailq_reserve(const char *name)
{
return rte_eal_tailq_lookup(name);
}
inline struct rte_tailq_head *
rte_eal_tailq_reserve_by_idx(const unsigned tailq_idx)
{
return rte_eal_tailq_lookup_by_idx(tailq_idx);
}
void
rte_dump_tailq(FILE *f)
{
struct rte_mem_config *mcfg;
unsigned i = 0;
mcfg = rte_eal_get_configuration()->mem_config;
rte_rwlock_read_lock(&mcfg->qlock);
for (i=0; i < RTE_MAX_TAILQ; i++) {
const struct rte_tailq_head *tailq = &mcfg->tailq_head[i];
const struct rte_tailq_entry_head *head = &tailq->tailq_head;
fprintf(f, "Tailq %u: qname:<%s>, tqh_first:%p, tqh_last:%p\n", i,
(rte_tailq_names[i] != NULL ? rte_tailq_names[i]:"nil"),
head->tqh_first, head->tqh_last);
}
rte_rwlock_read_unlock(&mcfg->qlock);
}
int
rte_eal_tailqs_init(void)
{
unsigned i;
struct rte_mem_config *mcfg = NULL;
RTE_BUILD_BUG_ON(RTE_MAX_TAILQ < RTE_TAILQ_NUM);
if (rte_eal_process_type() == RTE_PROC_PRIMARY) {
mcfg = rte_eal_get_configuration()->mem_config;
for (i = 0; i < RTE_MAX_TAILQ; i++)
TAILQ_INIT(&mcfg->tailq_head[i].tailq_head);
}
return 0;
}
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