ring: use custom element for fixed size API
Use rte_ring_xxx_elem_xxx APIs to replace legacy API implementation. This reduces code duplication and improves code maintenance. Tests done on Arm, x86 [1] and PPC [2] do not indicate performance degradation. [1] https://mails.dpdk.org/archives/dev/2020-July/173780.html [2] https://mails.dpdk.org/archives/dev/2020-July/173863.html Signed-off-by: Feifei Wang <feifei.wang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Ruifeng Wang <ruifeng.wang@arm.com> Tested-by: Konstantin Ananyev <konstantin.ananyev@intel.com> Tested-by: David Christensen <drc@linux.vnet.ibm.com> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
This commit is contained in:
Feifei Wang
David Marchand
parent
019bffab51
commit
2d6ed071a8
@ -191,168 +191,6 @@ void rte_ring_free(struct rte_ring *r);
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*/
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void rte_ring_dump(FILE *f, const struct rte_ring *r);
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/* the actual enqueue of pointers on the ring.
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* Placed here since identical code needed in both
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* single and multi producer enqueue functions */
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#define ENQUEUE_PTRS(r, ring_start, prod_head, obj_table, n, obj_type) do { \
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unsigned int i; \
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const uint32_t size = (r)->size; \
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uint32_t idx = prod_head & (r)->mask; \
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obj_type *ring = (obj_type *)ring_start; \
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if (likely(idx + n < size)) { \
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for (i = 0; i < (n & ~0x3); i += 4, idx += 4) { \
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ring[idx] = obj_table[i]; \
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ring[idx + 1] = obj_table[i + 1]; \
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ring[idx + 2] = obj_table[i + 2]; \
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ring[idx + 3] = obj_table[i + 3]; \
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} \
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switch (n & 0x3) { \
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case 3: \
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ring[idx++] = obj_table[i++]; /* fallthrough */ \
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case 2: \
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ring[idx++] = obj_table[i++]; /* fallthrough */ \
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case 1: \
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ring[idx++] = obj_table[i++]; \
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} \
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} else { \
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for (i = 0; idx < size; i++, idx++)\
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ring[idx] = obj_table[i]; \
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for (idx = 0; i < n; i++, idx++) \
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ring[idx] = obj_table[i]; \
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} \
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} while (0)
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/* the actual copy of pointers on the ring to obj_table.
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* Placed here since identical code needed in both
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* single and multi consumer dequeue functions */
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#define DEQUEUE_PTRS(r, ring_start, cons_head, obj_table, n, obj_type) do { \
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unsigned int i; \
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uint32_t idx = cons_head & (r)->mask; \
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const uint32_t size = (r)->size; \
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obj_type *ring = (obj_type *)ring_start; \
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if (likely(idx + n < size)) { \
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for (i = 0; i < (n & ~0x3); i += 4, idx += 4) {\
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obj_table[i] = ring[idx]; \
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obj_table[i + 1] = ring[idx + 1]; \
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obj_table[i + 2] = ring[idx + 2]; \
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obj_table[i + 3] = ring[idx + 3]; \
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} \
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switch (n & 0x3) { \
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case 3: \
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obj_table[i++] = ring[idx++]; /* fallthrough */ \
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case 2: \
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obj_table[i++] = ring[idx++]; /* fallthrough */ \
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case 1: \
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obj_table[i++] = ring[idx++]; \
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} \
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} else { \
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for (i = 0; idx < size; i++, idx++) \
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obj_table[i] = ring[idx]; \
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for (idx = 0; i < n; i++, idx++) \
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obj_table[i] = ring[idx]; \
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} \
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} while (0)
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/* Between load and load. there might be cpu reorder in weak model
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* (powerpc/arm).
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* There are 2 choices for the users
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* 1.use rmb() memory barrier
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* 2.use one-direction load_acquire/store_release barrier,defined by
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* CONFIG_RTE_USE_C11_MEM_MODEL=y
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* It depends on performance test results.
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* By default, move common functions to rte_ring_generic.h
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*/
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#ifdef RTE_USE_C11_MEM_MODEL
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#include "rte_ring_c11_mem.h"
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#else
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#include "rte_ring_generic.h"
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#endif
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/**
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* @internal Enqueue several objects on the ring
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*
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* @param r
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* A pointer to the ring structure.
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* @param obj_table
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* A pointer to a table of void * pointers (objects).
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* @param n
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* The number of objects to add in the ring from the obj_table.
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* @param behavior
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* RTE_RING_QUEUE_FIXED: Enqueue a fixed number of items from a ring
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* RTE_RING_QUEUE_VARIABLE: Enqueue as many items as possible from ring
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* @param is_sp
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* Indicates whether to use single producer or multi-producer head update
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* @param free_space
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* returns the amount of space after the enqueue operation has finished
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* @return
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* Actual number of objects enqueued.
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* If behavior == RTE_RING_QUEUE_FIXED, this will be 0 or n only.
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*/
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static __rte_always_inline unsigned int
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__rte_ring_do_enqueue(struct rte_ring *r, void * const *obj_table,
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unsigned int n, enum rte_ring_queue_behavior behavior,
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unsigned int is_sp, unsigned int *free_space)
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{
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uint32_t prod_head, prod_next;
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uint32_t free_entries;
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n = __rte_ring_move_prod_head(r, is_sp, n, behavior,
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&prod_head, &prod_next, &free_entries);
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if (n == 0)
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goto end;
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ENQUEUE_PTRS(r, &r[1], prod_head, obj_table, n, void *);
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update_tail(&r->prod, prod_head, prod_next, is_sp, 1);
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end:
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if (free_space != NULL)
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*free_space = free_entries - n;
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return n;
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}
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/**
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* @internal Dequeue several objects from the ring
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*
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* @param r
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* A pointer to the ring structure.
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* @param obj_table
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* A pointer to a table of void * pointers (objects).
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* @param n
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* The number of objects to pull from the ring.
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* @param behavior
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* RTE_RING_QUEUE_FIXED: Dequeue a fixed number of items from a ring
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* RTE_RING_QUEUE_VARIABLE: Dequeue as many items as possible from ring
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* @param is_sc
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* Indicates whether to use single consumer or multi-consumer head update
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* @param available
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* returns the number of remaining ring entries after the dequeue has finished
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* @return
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* - Actual number of objects dequeued.
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* If behavior == RTE_RING_QUEUE_FIXED, this will be 0 or n only.
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*/
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static __rte_always_inline unsigned int
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__rte_ring_do_dequeue(struct rte_ring *r, void **obj_table,
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unsigned int n, enum rte_ring_queue_behavior behavior,
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unsigned int is_sc, unsigned int *available)
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{
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uint32_t cons_head, cons_next;
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uint32_t entries;
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n = __rte_ring_move_cons_head(r, (int)is_sc, n, behavior,
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&cons_head, &cons_next, &entries);
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if (n == 0)
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goto end;
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DEQUEUE_PTRS(r, &r[1], cons_head, obj_table, n, void *);
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update_tail(&r->cons, cons_head, cons_next, is_sc, 0);
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end:
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if (available != NULL)
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*available = entries - n;
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return n;
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}
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/**
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* Enqueue several objects on the ring (multi-producers safe).
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*
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@ -375,8 +213,8 @@ static __rte_always_inline unsigned int
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rte_ring_mp_enqueue_bulk(struct rte_ring *r, void * const *obj_table,
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unsigned int n, unsigned int *free_space)
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{
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return __rte_ring_do_enqueue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
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RTE_RING_SYNC_MT, free_space);
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return rte_ring_mp_enqueue_bulk_elem(r, obj_table, sizeof(void *),
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n, free_space);
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}
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/**
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@ -398,8 +236,8 @@ static __rte_always_inline unsigned int
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rte_ring_sp_enqueue_bulk(struct rte_ring *r, void * const *obj_table,
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unsigned int n, unsigned int *free_space)
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{
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return __rte_ring_do_enqueue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
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RTE_RING_SYNC_ST, free_space);
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return rte_ring_sp_enqueue_bulk_elem(r, obj_table, sizeof(void *),
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n, free_space);
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}
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/**
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@ -425,24 +263,8 @@ static __rte_always_inline unsigned int
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rte_ring_enqueue_bulk(struct rte_ring *r, void * const *obj_table,
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unsigned int n, unsigned int *free_space)
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{
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switch (r->prod.sync_type) {
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case RTE_RING_SYNC_MT:
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return rte_ring_mp_enqueue_bulk(r, obj_table, n, free_space);
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case RTE_RING_SYNC_ST:
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return rte_ring_sp_enqueue_bulk(r, obj_table, n, free_space);
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#ifdef ALLOW_EXPERIMENTAL_API
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case RTE_RING_SYNC_MT_RTS:
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return rte_ring_mp_rts_enqueue_bulk(r, obj_table, n,
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free_space);
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case RTE_RING_SYNC_MT_HTS:
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return rte_ring_mp_hts_enqueue_bulk(r, obj_table, n,
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free_space);
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#endif
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}
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/* valid ring should never reach this point */
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RTE_ASSERT(0);
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return 0;
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return rte_ring_enqueue_bulk_elem(r, obj_table, sizeof(void *),
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n, free_space);
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}
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/**
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@ -462,7 +284,7 @@ rte_ring_enqueue_bulk(struct rte_ring *r, void * const *obj_table,
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static __rte_always_inline int
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rte_ring_mp_enqueue(struct rte_ring *r, void *obj)
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{
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return rte_ring_mp_enqueue_bulk(r, &obj, 1, NULL) ? 0 : -ENOBUFS;
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return rte_ring_mp_enqueue_elem(r, &obj, sizeof(void *));
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}
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/**
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@ -479,7 +301,7 @@ rte_ring_mp_enqueue(struct rte_ring *r, void *obj)
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static __rte_always_inline int
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rte_ring_sp_enqueue(struct rte_ring *r, void *obj)
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{
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return rte_ring_sp_enqueue_bulk(r, &obj, 1, NULL) ? 0 : -ENOBUFS;
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return rte_ring_sp_enqueue_elem(r, &obj, sizeof(void *));
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}
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/**
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@ -500,7 +322,7 @@ rte_ring_sp_enqueue(struct rte_ring *r, void *obj)
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static __rte_always_inline int
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rte_ring_enqueue(struct rte_ring *r, void *obj)
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{
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return rte_ring_enqueue_bulk(r, &obj, 1, NULL) ? 0 : -ENOBUFS;
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return rte_ring_enqueue_elem(r, &obj, sizeof(void *));
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}
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/**
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@ -525,8 +347,8 @@ static __rte_always_inline unsigned int
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rte_ring_mc_dequeue_bulk(struct rte_ring *r, void **obj_table,
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unsigned int n, unsigned int *available)
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{
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return __rte_ring_do_dequeue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
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RTE_RING_SYNC_MT, available);
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return rte_ring_mc_dequeue_bulk_elem(r, obj_table, sizeof(void *),
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n, available);
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}
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/**
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@ -549,8 +371,8 @@ static __rte_always_inline unsigned int
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rte_ring_sc_dequeue_bulk(struct rte_ring *r, void **obj_table,
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unsigned int n, unsigned int *available)
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{
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return __rte_ring_do_dequeue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
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RTE_RING_SYNC_ST, available);
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return rte_ring_sc_dequeue_bulk_elem(r, obj_table, sizeof(void *),
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n, available);
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}
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/**
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@ -576,22 +398,8 @@ static __rte_always_inline unsigned int
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rte_ring_dequeue_bulk(struct rte_ring *r, void **obj_table, unsigned int n,
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unsigned int *available)
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{
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switch (r->cons.sync_type) {
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case RTE_RING_SYNC_MT:
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return rte_ring_mc_dequeue_bulk(r, obj_table, n, available);
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case RTE_RING_SYNC_ST:
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return rte_ring_sc_dequeue_bulk(r, obj_table, n, available);
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#ifdef ALLOW_EXPERIMENTAL_API
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case RTE_RING_SYNC_MT_RTS:
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return rte_ring_mc_rts_dequeue_bulk(r, obj_table, n, available);
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case RTE_RING_SYNC_MT_HTS:
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return rte_ring_mc_hts_dequeue_bulk(r, obj_table, n, available);
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#endif
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}
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/* valid ring should never reach this point */
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RTE_ASSERT(0);
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return 0;
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return rte_ring_dequeue_bulk_elem(r, obj_table, sizeof(void *),
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n, available);
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}
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/**
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@ -612,7 +420,7 @@ rte_ring_dequeue_bulk(struct rte_ring *r, void **obj_table, unsigned int n,
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static __rte_always_inline int
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rte_ring_mc_dequeue(struct rte_ring *r, void **obj_p)
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{
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return rte_ring_mc_dequeue_bulk(r, obj_p, 1, NULL) ? 0 : -ENOENT;
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return rte_ring_mc_dequeue_elem(r, obj_p, sizeof(void *));
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}
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/**
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@ -630,7 +438,7 @@ rte_ring_mc_dequeue(struct rte_ring *r, void **obj_p)
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static __rte_always_inline int
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rte_ring_sc_dequeue(struct rte_ring *r, void **obj_p)
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{
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return rte_ring_sc_dequeue_bulk(r, obj_p, 1, NULL) ? 0 : -ENOENT;
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return rte_ring_sc_dequeue_elem(r, obj_p, sizeof(void *));
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}
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/**
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@ -652,7 +460,7 @@ rte_ring_sc_dequeue(struct rte_ring *r, void **obj_p)
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static __rte_always_inline int
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rte_ring_dequeue(struct rte_ring *r, void **obj_p)
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{
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return rte_ring_dequeue_bulk(r, obj_p, 1, NULL) ? 0 : -ENOENT;
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return rte_ring_dequeue_elem(r, obj_p, sizeof(void *));
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}
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/**
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@ -860,8 +668,8 @@ static __rte_always_inline unsigned int
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rte_ring_mp_enqueue_burst(struct rte_ring *r, void * const *obj_table,
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unsigned int n, unsigned int *free_space)
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{
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return __rte_ring_do_enqueue(r, obj_table, n,
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RTE_RING_QUEUE_VARIABLE, RTE_RING_SYNC_MT, free_space);
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return rte_ring_mp_enqueue_burst_elem(r, obj_table, sizeof(void *),
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n, free_space);
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}
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/**
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@ -883,8 +691,8 @@ static __rte_always_inline unsigned int
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rte_ring_sp_enqueue_burst(struct rte_ring *r, void * const *obj_table,
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unsigned int n, unsigned int *free_space)
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{
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return __rte_ring_do_enqueue(r, obj_table, n,
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RTE_RING_QUEUE_VARIABLE, RTE_RING_SYNC_ST, free_space);
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return rte_ring_sp_enqueue_burst_elem(r, obj_table, sizeof(void *),
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n, free_space);
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}
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/**
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@ -910,24 +718,8 @@ static __rte_always_inline unsigned int
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rte_ring_enqueue_burst(struct rte_ring *r, void * const *obj_table,
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unsigned int n, unsigned int *free_space)
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{
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switch (r->prod.sync_type) {
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case RTE_RING_SYNC_MT:
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return rte_ring_mp_enqueue_burst(r, obj_table, n, free_space);
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case RTE_RING_SYNC_ST:
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return rte_ring_sp_enqueue_burst(r, obj_table, n, free_space);
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#ifdef ALLOW_EXPERIMENTAL_API
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case RTE_RING_SYNC_MT_RTS:
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return rte_ring_mp_rts_enqueue_burst(r, obj_table, n,
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free_space);
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case RTE_RING_SYNC_MT_HTS:
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return rte_ring_mp_hts_enqueue_burst(r, obj_table, n,
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free_space);
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#endif
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}
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/* valid ring should never reach this point */
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RTE_ASSERT(0);
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return 0;
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return rte_ring_enqueue_burst_elem(r, obj_table, sizeof(void *),
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n, free_space);
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}
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/**
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@ -954,8 +746,8 @@ static __rte_always_inline unsigned int
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rte_ring_mc_dequeue_burst(struct rte_ring *r, void **obj_table,
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unsigned int n, unsigned int *available)
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{
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return __rte_ring_do_dequeue(r, obj_table, n,
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RTE_RING_QUEUE_VARIABLE, RTE_RING_SYNC_MT, available);
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return rte_ring_mc_dequeue_burst_elem(r, obj_table, sizeof(void *),
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n, available);
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}
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/**
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@ -979,8 +771,8 @@ static __rte_always_inline unsigned int
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rte_ring_sc_dequeue_burst(struct rte_ring *r, void **obj_table,
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unsigned int n, unsigned int *available)
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{
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return __rte_ring_do_dequeue(r, obj_table, n,
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RTE_RING_QUEUE_VARIABLE, RTE_RING_SYNC_ST, available);
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return rte_ring_sc_dequeue_burst_elem(r, obj_table, sizeof(void *),
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n, available);
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}
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/**
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@ -1006,24 +798,8 @@ static __rte_always_inline unsigned int
|
||||
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
|
||||
|
||||
Loading…
Reference in New Issue
Block a user