/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2017 Intel Corporation
+ * Copyright(c) 2019 Arm Limited
*/
#include <sys/queue.h>
#include <rte_eal_memconfig.h>
#include "rte_event_ring.h"
-TAILQ_HEAD(rte_event_ring_list, rte_tailq_entry);
-
-static struct rte_tailq_elem rte_event_ring_tailq = {
- .name = RTE_TAILQ_EVENT_RING_NAME,
-};
-EAL_REGISTER_TAILQ(rte_event_ring_tailq)
-
int
rte_event_ring_init(struct rte_event_ring *r, const char *name,
unsigned int count, unsigned int flags)
rte_event_ring_create(const char *name, unsigned int count, int socket_id,
unsigned int flags)
{
- char mz_name[RTE_MEMZONE_NAMESIZE];
- struct rte_event_ring *r;
- struct rte_tailq_entry *te;
- const struct rte_memzone *mz;
- ssize_t ring_size;
- int mz_flags = 0;
- struct rte_event_ring_list *ring_list = NULL;
- const unsigned int requested_count = count;
- int ret;
-
- ring_list = RTE_TAILQ_CAST(rte_event_ring_tailq.head,
- rte_event_ring_list);
-
- /* for an exact size ring, round up from count to a power of two */
- if (flags & RING_F_EXACT_SZ)
- count = rte_align32pow2(count + 1);
- else if (!rte_is_power_of_2(count)) {
- rte_errno = EINVAL;
- return NULL;
- }
-
- ring_size = sizeof(*r) + (count * sizeof(struct rte_event));
-
- ret = snprintf(mz_name, sizeof(mz_name), "%s%s",
- RTE_RING_MZ_PREFIX, name);
- if (ret < 0 || ret >= (int)sizeof(mz_name)) {
- rte_errno = ENAMETOOLONG;
- return NULL;
- }
-
- te = rte_zmalloc("RING_TAILQ_ENTRY", sizeof(*te), 0);
- if (te == NULL) {
- RTE_LOG(ERR, RING, "Cannot reserve memory for tailq\n");
- rte_errno = ENOMEM;
- return NULL;
- }
-
- rte_mcfg_tailq_write_lock();
-
- /*
- * reserve a memory zone for this ring. If we can't get rte_config or
- * we are secondary process, the memzone_reserve function will set
- * rte_errno for us appropriately - hence no check in this this function
- */
- mz = rte_memzone_reserve(mz_name, ring_size, socket_id, mz_flags);
- if (mz != NULL) {
- r = mz->addr;
- /* Check return value in case rte_ring_init() fails on size */
- int err = rte_event_ring_init(r, name, requested_count, flags);
- if (err) {
- RTE_LOG(ERR, RING, "Ring init failed\n");
- if (rte_memzone_free(mz) != 0)
- RTE_LOG(ERR, RING, "Cannot free memzone\n");
- rte_free(te);
- rte_mcfg_tailq_write_unlock();
- return NULL;
- }
-
- te->data = (void *) r;
- r->r.memzone = mz;
-
- TAILQ_INSERT_TAIL(ring_list, te, next);
- } else {
- r = NULL;
- RTE_LOG(ERR, RING, "Cannot reserve memory\n");
- rte_free(te);
- }
- rte_mcfg_tailq_write_unlock();
-
- return r;
+ return (struct rte_event_ring *)rte_ring_create_elem(name,
+ sizeof(struct rte_event),
+ count, socket_id, flags);
}
struct rte_event_ring *
rte_event_ring_lookup(const char *name)
{
- struct rte_tailq_entry *te;
- struct rte_event_ring *r = NULL;
- struct rte_event_ring_list *ring_list;
-
- ring_list = RTE_TAILQ_CAST(rte_event_ring_tailq.head,
- rte_event_ring_list);
-
- rte_mcfg_tailq_read_lock();
-
- TAILQ_FOREACH(te, ring_list, next) {
- r = (struct rte_event_ring *) te->data;
- if (strncmp(name, r->r.name, RTE_RING_NAMESIZE) == 0)
- break;
- }
-
- rte_mcfg_tailq_read_unlock();
-
- if (te == NULL) {
- rte_errno = ENOENT;
- return NULL;
- }
-
- return r;
+ return (struct rte_event_ring *)rte_ring_lookup(name);
}
/* free the ring */
void
rte_event_ring_free(struct rte_event_ring *r)
{
- struct rte_event_ring_list *ring_list = NULL;
- struct rte_tailq_entry *te;
-
- if (r == NULL)
- return;
-
- /*
- * Ring was not created with rte_event_ring_create,
- * therefore, there is no memzone to free.
- */
- if (r->r.memzone == NULL) {
- RTE_LOG(ERR, RING,
- "Cannot free ring (not created with rte_event_ring_create()");
- return;
- }
-
- if (rte_memzone_free(r->r.memzone) != 0) {
- RTE_LOG(ERR, RING, "Cannot free memory\n");
- return;
- }
-
- ring_list = RTE_TAILQ_CAST(rte_event_ring_tailq.head,
- rte_event_ring_list);
- rte_mcfg_tailq_write_lock();
-
- /* find out tailq entry */
- TAILQ_FOREACH(te, ring_list, next) {
- if (te->data == (void *) r)
- break;
- }
-
- if (te == NULL) {
- rte_mcfg_tailq_write_unlock();
- return;
- }
-
- TAILQ_REMOVE(ring_list, te, next);
-
- rte_mcfg_tailq_write_unlock();
-
- rte_free(te);
+ rte_ring_free((struct rte_ring *)r);
}
/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2016-2017 Intel Corporation
+ * Copyright(c) 2019 Arm Limited
*/
/**
#include <rte_memory.h>
#include <rte_malloc.h>
#include <rte_ring.h>
+#include <rte_ring_elem.h>
#include "rte_eventdev.h"
#define RTE_TAILQ_EVENT_RING_NAME "RTE_EVENT_RING"
const struct rte_event *events,
unsigned int n, uint16_t *free_space)
{
- uint32_t prod_head, prod_next;
- uint32_t free_entries;
+ unsigned int num;
+ uint32_t space;
- n = __rte_ring_move_prod_head(&r->r, r->r.prod.single, n,
- RTE_RING_QUEUE_VARIABLE,
- &prod_head, &prod_next, &free_entries);
- if (n == 0)
- goto end;
+ num = rte_ring_enqueue_burst_elem(&r->r, events,
+ sizeof(struct rte_event), n,
+ &space);
- ENQUEUE_PTRS(&r->r, &r[1], prod_head, events, n, struct rte_event);
-
- update_tail(&r->r.prod, prod_head, prod_next, r->r.prod.single, 1);
-end:
if (free_space != NULL)
- *free_space = free_entries - n;
- return n;
+ *free_space = space;
+
+ return num;
}
/**
struct rte_event *events,
unsigned int n, uint16_t *available)
{
- uint32_t cons_head, cons_next;
- uint32_t entries;
-
- n = __rte_ring_move_cons_head(&r->r, r->r.cons.single, n,
- RTE_RING_QUEUE_VARIABLE,
- &cons_head, &cons_next, &entries);
- if (n == 0)
- goto end;
+ unsigned int num;
+ uint32_t remaining;
- DEQUEUE_PTRS(&r->r, &r[1], cons_head, events, n, struct rte_event);
+ num = rte_ring_dequeue_burst_elem(&r->r, events,
+ sizeof(struct rte_event), n,
+ &remaining);
- update_tail(&r->r.cons, cons_head, cons_next, r->r.cons.single, 0);
-
-end:
if (available != NULL)
- *available = entries - n;
- return n;
+ *available = remaining;
+
+ return num;
}
/*
git.droids-corp.org / dpdk.git / commitdiff