*/
void rte_ring_dump(FILE *f, const struct rte_ring *r);
-/* the actual enqueue of pointers on the ring.
- * Placed here since identical code needed in both
- * single and multi producer enqueue functions */
-#define ENQUEUE_PTRS(r, ring_start, prod_head, obj_table, n, obj_type) do { \
- unsigned int i; \
- const uint32_t size = (r)->size; \
- uint32_t idx = prod_head & (r)->mask; \
- obj_type *ring = (obj_type *)ring_start; \
- if (likely(idx + n < size)) { \
- for (i = 0; i < (n & ~0x3); i += 4, idx += 4) { \
- ring[idx] = obj_table[i]; \
- ring[idx + 1] = obj_table[i + 1]; \
- ring[idx + 2] = obj_table[i + 2]; \
- ring[idx + 3] = obj_table[i + 3]; \
- } \
- switch (n & 0x3) { \
- case 3: \
- ring[idx++] = obj_table[i++]; /* fallthrough */ \
- case 2: \
- ring[idx++] = obj_table[i++]; /* fallthrough */ \
- case 1: \
- ring[idx++] = obj_table[i++]; \
- } \
- } else { \
- for (i = 0; idx < size; i++, idx++)\
- ring[idx] = obj_table[i]; \
- for (idx = 0; i < n; i++, idx++) \
- ring[idx] = obj_table[i]; \
- } \
-} while (0)
-
-/* the actual copy of pointers on the ring to obj_table.
- * Placed here since identical code needed in both
- * single and multi consumer dequeue functions */
-#define DEQUEUE_PTRS(r, ring_start, cons_head, obj_table, n, obj_type) do { \
- unsigned int i; \
- uint32_t idx = cons_head & (r)->mask; \
- const uint32_t size = (r)->size; \
- obj_type *ring = (obj_type *)ring_start; \
- if (likely(idx + n < size)) { \
- for (i = 0; i < (n & ~0x3); i += 4, idx += 4) {\
- obj_table[i] = ring[idx]; \
- obj_table[i + 1] = ring[idx + 1]; \
- obj_table[i + 2] = ring[idx + 2]; \
- obj_table[i + 3] = ring[idx + 3]; \
- } \
- switch (n & 0x3) { \
- case 3: \
- obj_table[i++] = ring[idx++]; /* fallthrough */ \
- case 2: \
- obj_table[i++] = ring[idx++]; /* fallthrough */ \
- case 1: \
- obj_table[i++] = ring[idx++]; \
- } \
- } else { \
- for (i = 0; idx < size; i++, idx++) \
- obj_table[i] = ring[idx]; \
- for (idx = 0; i < n; i++, idx++) \
- obj_table[i] = ring[idx]; \
- } \
-} while (0)
-
-/* Between load and load. there might be cpu reorder in weak model
- * (powerpc/arm).
- * There are 2 choices for the users
- * 1.use rmb() memory barrier
- * 2.use one-direction load_acquire/store_release barrier,defined by
- * CONFIG_RTE_USE_C11_MEM_MODEL=y
- * It depends on performance test results.
- * By default, move common functions to rte_ring_generic.h
- */
-#ifdef RTE_USE_C11_MEM_MODEL
-#include "rte_ring_c11_mem.h"
-#else
-#include "rte_ring_generic.h"
-#endif
-
-/**
- * @internal Enqueue several objects on the ring
- *
- * @param r
- * A pointer to the ring structure.
- * @param obj_table
- * A pointer to a table of void * pointers (objects).
- * @param n
- * The number of objects to add in the ring from the obj_table.
- * @param behavior
- * RTE_RING_QUEUE_FIXED: Enqueue a fixed number of items from a ring
- * RTE_RING_QUEUE_VARIABLE: Enqueue as many items as possible from ring
- * @param is_sp
- * Indicates whether to use single producer or multi-producer head update
- * @param free_space
- * returns the amount of space after the enqueue operation has finished
- * @return
- * Actual number of objects enqueued.
- * If behavior == RTE_RING_QUEUE_FIXED, this will be 0 or n only.
- */
-static __rte_always_inline unsigned int
-__rte_ring_do_enqueue(struct rte_ring *r, void * const *obj_table,
- unsigned int n, enum rte_ring_queue_behavior behavior,
- unsigned int is_sp, unsigned int *free_space)
-{
- uint32_t prod_head, prod_next;
- uint32_t free_entries;
-
- n = __rte_ring_move_prod_head(r, is_sp, n, behavior,
- &prod_head, &prod_next, &free_entries);
- if (n == 0)
- goto end;
-
- ENQUEUE_PTRS(r, &r[1], prod_head, obj_table, n, void *);
-
- update_tail(&r->prod, prod_head, prod_next, is_sp, 1);
-end:
- if (free_space != NULL)
- *free_space = free_entries - n;
- return n;
-}
-
-/**
- * @internal Dequeue several objects from the ring
- *
- * @param r
- * A pointer to the ring structure.
- * @param obj_table
- * A pointer to a table of void * pointers (objects).
- * @param n
- * The number of objects to pull from the ring.
- * @param behavior
- * RTE_RING_QUEUE_FIXED: Dequeue a fixed number of items from a ring
- * RTE_RING_QUEUE_VARIABLE: Dequeue as many items as possible from ring
- * @param is_sc
- * Indicates whether to use single consumer or multi-consumer head update
- * @param available
- * returns the number of remaining ring entries after the dequeue has finished
- * @return
- * - Actual number of objects dequeued.
- * If behavior == RTE_RING_QUEUE_FIXED, this will be 0 or n only.
- */
-static __rte_always_inline unsigned int
-__rte_ring_do_dequeue(struct rte_ring *r, void **obj_table,
- unsigned int n, enum rte_ring_queue_behavior behavior,
- unsigned int is_sc, unsigned int *available)
-{
- uint32_t cons_head, cons_next;
- uint32_t entries;
-
- n = __rte_ring_move_cons_head(r, (int)is_sc, n, behavior,
- &cons_head, &cons_next, &entries);
- if (n == 0)
- goto end;
-
- DEQUEUE_PTRS(r, &r[1], cons_head, obj_table, n, void *);
-
- update_tail(&r->cons, cons_head, cons_next, is_sc, 0);
-
-end:
- if (available != NULL)
- *available = entries - n;
- return n;
-}
-
/**
* Enqueue several objects on the ring (multi-producers safe).
*
rte_ring_mp_enqueue_bulk(struct rte_ring *r, void * const *obj_table,
unsigned int n, unsigned int *free_space)
{
- return __rte_ring_do_enqueue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
- RTE_RING_SYNC_MT, free_space);
+ return rte_ring_mp_enqueue_bulk_elem(r, obj_table, sizeof(void *),
+ n, free_space);
}
/**
rte_ring_sp_enqueue_bulk(struct rte_ring *r, void * const *obj_table,
unsigned int n, unsigned int *free_space)
{
- return __rte_ring_do_enqueue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
- RTE_RING_SYNC_ST, free_space);
+ return rte_ring_sp_enqueue_bulk_elem(r, obj_table, sizeof(void *),
+ n, free_space);
}
/**
rte_ring_enqueue_bulk(struct rte_ring *r, void * const *obj_table,
unsigned int n, unsigned int *free_space)
{
- switch (r->prod.sync_type) {
- case RTE_RING_SYNC_MT:
- return rte_ring_mp_enqueue_bulk(r, obj_table, n, free_space);
- case RTE_RING_SYNC_ST:
- return rte_ring_sp_enqueue_bulk(r, obj_table, n, free_space);
-#ifdef ALLOW_EXPERIMENTAL_API
- case RTE_RING_SYNC_MT_RTS:
- return rte_ring_mp_rts_enqueue_bulk(r, obj_table, n,
- free_space);
- case RTE_RING_SYNC_MT_HTS:
- return rte_ring_mp_hts_enqueue_bulk(r, obj_table, n,
- free_space);
-#endif
- }
-
- /* valid ring should never reach this point */
- RTE_ASSERT(0);
- return 0;
+ return rte_ring_enqueue_bulk_elem(r, obj_table, sizeof(void *),
+ n, free_space);
}
/**
static __rte_always_inline int
rte_ring_mp_enqueue(struct rte_ring *r, void *obj)
{
- return rte_ring_mp_enqueue_bulk(r, &obj, 1, NULL) ? 0 : -ENOBUFS;
+ return rte_ring_mp_enqueue_elem(r, &obj, sizeof(void *));
}
/**
static __rte_always_inline int
rte_ring_sp_enqueue(struct rte_ring *r, void *obj)
{
- return rte_ring_sp_enqueue_bulk(r, &obj, 1, NULL) ? 0 : -ENOBUFS;
+ return rte_ring_sp_enqueue_elem(r, &obj, sizeof(void *));
}
/**
static __rte_always_inline int
rte_ring_enqueue(struct rte_ring *r, void *obj)
{
- return rte_ring_enqueue_bulk(r, &obj, 1, NULL) ? 0 : -ENOBUFS;
+ return rte_ring_enqueue_elem(r, &obj, sizeof(void *));
}
/**
rte_ring_mc_dequeue_bulk(struct rte_ring *r, void **obj_table,
unsigned int n, unsigned int *available)
{
- return __rte_ring_do_dequeue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
- RTE_RING_SYNC_MT, available);
+ return rte_ring_mc_dequeue_bulk_elem(r, obj_table, sizeof(void *),
+ n, available);
}
/**
rte_ring_sc_dequeue_bulk(struct rte_ring *r, void **obj_table,
unsigned int n, unsigned int *available)
{
- return __rte_ring_do_dequeue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
- RTE_RING_SYNC_ST, available);
+ return rte_ring_sc_dequeue_bulk_elem(r, obj_table, sizeof(void *),
+ n, available);
}
/**
rte_ring_dequeue_bulk(struct rte_ring *r, void **obj_table, unsigned int n,
unsigned int *available)
{
- switch (r->cons.sync_type) {
- case RTE_RING_SYNC_MT:
- return rte_ring_mc_dequeue_bulk(r, obj_table, n, available);
- case RTE_RING_SYNC_ST:
- return rte_ring_sc_dequeue_bulk(r, obj_table, n, available);
-#ifdef ALLOW_EXPERIMENTAL_API
- case RTE_RING_SYNC_MT_RTS:
- return rte_ring_mc_rts_dequeue_bulk(r, obj_table, n, available);
- case RTE_RING_SYNC_MT_HTS:
- return rte_ring_mc_hts_dequeue_bulk(r, obj_table, n, available);
-#endif
- }
-
- /* valid ring should never reach this point */
- RTE_ASSERT(0);
- return 0;
+ return rte_ring_dequeue_bulk_elem(r, obj_table, sizeof(void *),
+ n, available);
}
/**
static __rte_always_inline int
rte_ring_mc_dequeue(struct rte_ring *r, void **obj_p)
{
- return rte_ring_mc_dequeue_bulk(r, obj_p, 1, NULL) ? 0 : -ENOENT;
+ return rte_ring_mc_dequeue_elem(r, obj_p, sizeof(void *));
}
/**
static __rte_always_inline int
rte_ring_sc_dequeue(struct rte_ring *r, void **obj_p)
{
- return rte_ring_sc_dequeue_bulk(r, obj_p, 1, NULL) ? 0 : -ENOENT;
+ return rte_ring_sc_dequeue_elem(r, obj_p, sizeof(void *));
}
/**
static __rte_always_inline int
rte_ring_dequeue(struct rte_ring *r, void **obj_p)
{
- return rte_ring_dequeue_bulk(r, obj_p, 1, NULL) ? 0 : -ENOENT;
+ return rte_ring_dequeue_elem(r, obj_p, sizeof(void *));
}
/**
rte_ring_mp_enqueue_burst(struct rte_ring *r, void * const *obj_table,
unsigned int n, unsigned int *free_space)
{
- return __rte_ring_do_enqueue(r, obj_table, n,
- RTE_RING_QUEUE_VARIABLE, RTE_RING_SYNC_MT, free_space);
+ return rte_ring_mp_enqueue_burst_elem(r, obj_table, sizeof(void *),
+ n, free_space);
}
/**
rte_ring_sp_enqueue_burst(struct rte_ring *r, void * const *obj_table,
unsigned int n, unsigned int *free_space)
{
- return __rte_ring_do_enqueue(r, obj_table, n,
- RTE_RING_QUEUE_VARIABLE, RTE_RING_SYNC_ST, free_space);
+ return rte_ring_sp_enqueue_burst_elem(r, obj_table, sizeof(void *),
+ n, free_space);
}
/**
rte_ring_enqueue_burst(struct rte_ring *r, void * const *obj_table,
unsigned int n, unsigned int *free_space)
{
- switch (r->prod.sync_type) {
- case RTE_RING_SYNC_MT:
- return rte_ring_mp_enqueue_burst(r, obj_table, n, free_space);
- case RTE_RING_SYNC_ST:
- return rte_ring_sp_enqueue_burst(r, obj_table, n, free_space);
-#ifdef ALLOW_EXPERIMENTAL_API
- case RTE_RING_SYNC_MT_RTS:
- return rte_ring_mp_rts_enqueue_burst(r, obj_table, n,
- free_space);
- case RTE_RING_SYNC_MT_HTS:
- return rte_ring_mp_hts_enqueue_burst(r, obj_table, n,
- free_space);
-#endif
- }
-
- /* valid ring should never reach this point */
- RTE_ASSERT(0);
- return 0;
+ return rte_ring_enqueue_burst_elem(r, obj_table, sizeof(void *),
+ n, free_space);
}
/**
rte_ring_mc_dequeue_burst(struct rte_ring *r, void **obj_table,
unsigned int n, unsigned int *available)
{
- return __rte_ring_do_dequeue(r, obj_table, n,
- RTE_RING_QUEUE_VARIABLE, RTE_RING_SYNC_MT, available);
+ return rte_ring_mc_dequeue_burst_elem(r, obj_table, sizeof(void *),
+ n, available);
}
/**
rte_ring_sc_dequeue_burst(struct rte_ring *r, void **obj_table,
unsigned int n, unsigned int *available)
{
- return __rte_ring_do_dequeue(r, obj_table, n,
- RTE_RING_QUEUE_VARIABLE, RTE_RING_SYNC_ST, available);
+ return rte_ring_sc_dequeue_burst_elem(r, obj_table, sizeof(void *),
+ n, available);
}
/**
rte_ring_dequeue_burst(struct rte_ring *r, void **obj_table,
unsigned int n, unsigned int *available)
{
- switch (r->cons.sync_type) {
- case RTE_RING_SYNC_MT:
- return rte_ring_mc_dequeue_burst(r, obj_table, n, available);
- case RTE_RING_SYNC_ST:
- return rte_ring_sc_dequeue_burst(r, obj_table, n, available);
-#ifdef ALLOW_EXPERIMENTAL_API
- case RTE_RING_SYNC_MT_RTS:
- return rte_ring_mc_rts_dequeue_burst(r, obj_table, n,
- available);
- case RTE_RING_SYNC_MT_HTS:
- return rte_ring_mc_hts_dequeue_burst(r, obj_table, n,
- available);
-#endif
- }
-
- /* valid ring should never reach this point */
- RTE_ASSERT(0);
- return 0;
+ return rte_ring_dequeue_burst_elem(r, obj_table, sizeof(void *),
+ n, available);
}
#ifdef __cplusplus
git.droids-corp.org / dpdk.git / commitdiff