-#include <stdio.h>
-#include <stdint.h>
-#include <sys/queue.h>
-#include <errno.h>
-#include <rte_common.h>
-#include <rte_memory.h>
-#include <rte_lcore.h>
-#include <rte_atomic.h>
-#include <rte_branch_prediction.h>
-#include <rte_memzone.h>
-
-#define RTE_TAILQ_RING_NAME "RTE_RING"
-
-enum rte_ring_queue_behavior {
- RTE_RING_QUEUE_FIXED = 0, /* Enq/Deq a fixed number of items from a ring */
- RTE_RING_QUEUE_VARIABLE /* Enq/Deq as many items a possible from ring */
-};
-
-#ifdef RTE_LIBRTE_RING_DEBUG
-/**
- * A structure that stores the ring statistics (per-lcore).
- */
-struct rte_ring_debug_stats {
- uint64_t enq_success_bulk; /**< Successful enqueues number. */
- uint64_t enq_success_objs; /**< Objects successfully enqueued. */
- uint64_t enq_quota_bulk; /**< Successful enqueues above watermark. */
- uint64_t enq_quota_objs; /**< Objects enqueued above watermark. */
- uint64_t enq_fail_bulk; /**< Failed enqueues number. */
- uint64_t enq_fail_objs; /**< Objects that failed to be enqueued. */
- uint64_t deq_success_bulk; /**< Successful dequeues number. */
- uint64_t deq_success_objs; /**< Objects successfully dequeued. */
- uint64_t deq_fail_bulk; /**< Failed dequeues number. */
- uint64_t deq_fail_objs; /**< Objects that failed to be dequeued. */
-} __rte_cache_aligned;
-#endif
-
-#define RTE_RING_MZ_PREFIX "RG_"
-/**< The maximum length of a ring name. */
-#define RTE_RING_NAMESIZE (RTE_MEMZONE_NAMESIZE - \
- sizeof(RTE_RING_MZ_PREFIX) + 1)
-
-#ifndef RTE_RING_PAUSE_REP_COUNT
-#define RTE_RING_PAUSE_REP_COUNT 0 /**< Yield after pause num of times, no yield
- * if RTE_RING_PAUSE_REP not defined. */
-#endif
-
-struct rte_memzone; /* forward declaration, so as not to require memzone.h */
-
-/**
- * An RTE ring structure.
- *
- * The producer and the consumer have a head and a tail index. The particularity
- * of these index is that they are not between 0 and size(ring). These indexes
- * are between 0 and 2^32, and we mask their value when we access the ring[]
- * field. Thanks to this assumption, we can do subtractions between 2 index
- * values in a modulo-32bit base: that's why the overflow of the indexes is not
- * a problem.
- */
-struct rte_ring {
- /*
- * Note: this field kept the RTE_MEMZONE_NAMESIZE size due to ABI
- * compatibility requirements, it could be changed to RTE_RING_NAMESIZE
- * next time the ABI changes
- */
- char name[RTE_MEMZONE_NAMESIZE]; /**< Name of the ring. */
- int flags; /**< Flags supplied at creation. */
- const struct rte_memzone *memzone;
- /**< Memzone, if any, containing the rte_ring */
-
- /** Ring producer status. */
- struct prod {
- uint32_t watermark; /**< Maximum items before EDQUOT. */
- uint32_t sp_enqueue; /**< True, if single producer. */
- uint32_t size; /**< Size of ring. */
- uint32_t mask; /**< Mask (size-1) of ring. */
- volatile uint32_t head; /**< Producer head. */
- volatile uint32_t tail; /**< Producer tail. */
- } prod __rte_cache_aligned;
-
- /** Ring consumer status. */
- struct cons {
- uint32_t sc_dequeue; /**< True, if single consumer. */
- uint32_t size; /**< Size of the ring. */
- uint32_t mask; /**< Mask (size-1) of ring. */
- volatile uint32_t head; /**< Consumer head. */
- volatile uint32_t tail; /**< Consumer tail. */
-#ifdef RTE_RING_SPLIT_PROD_CONS
- } cons __rte_cache_aligned;
-#else
- } cons;
-#endif
-
-#ifdef RTE_LIBRTE_RING_DEBUG
- struct rte_ring_debug_stats stats[RTE_MAX_LCORE];
-#endif
-
- void * ring[0] __rte_cache_aligned; /**< Memory space of ring starts here.
- * not volatile so need to be careful
- * about compiler re-ordering */
-};
-
-#define RING_F_SP_ENQ 0x0001 /**< The default enqueue is "single-producer". */
-#define RING_F_SC_DEQ 0x0002 /**< The default dequeue is "single-consumer". */
-#define RTE_RING_QUOT_EXCEED (1 << 31) /**< Quota exceed for burst ops */
-#define RTE_RING_SZ_MASK (unsigned)(0x0fffffff) /**< Ring size mask */
-
-/**
- * @internal When debug is enabled, store ring statistics.
- * @param r
- * A pointer to the ring.
- * @param name
- * The name of the statistics field to increment in the ring.
- * @param n
- * The number to add to the object-oriented statistics.
- */
-#ifdef RTE_LIBRTE_RING_DEBUG
-#define __RING_STAT_ADD(r, name, n) do { \
- unsigned __lcore_id = rte_lcore_id(); \
- if (__lcore_id < RTE_MAX_LCORE) { \
- r->stats[__lcore_id].name##_objs += n; \
- r->stats[__lcore_id].name##_bulk += 1; \
- } \
- } while(0)
-#else
-#define __RING_STAT_ADD(r, name, n) do {} while(0)
-#endif