41 #include <sys/queue.h> 44 #include <rte_config.h> 52 #define RTE_TAILQ_RING_NAME "RTE_RING" 54 enum rte_ring_queue_behavior {
55 RTE_RING_QUEUE_FIXED = 0,
56 RTE_RING_QUEUE_VARIABLE
59 #define RTE_RING_MZ_PREFIX "RG_" 61 #define RTE_RING_NAMESIZE (RTE_MEMZONE_NAMESIZE - \ 62 sizeof(RTE_RING_MZ_PREFIX) + 1) 65 struct rte_ring_headtail {
66 volatile uint32_t head;
67 volatile uint32_t tail;
98 struct rte_ring_headtail prod __rte_cache_aligned;
102 struct rte_ring_headtail cons __rte_cache_aligned;
106 #define RING_F_SP_ENQ 0x0001 107 #define RING_F_SC_DEQ 0x0002 116 #define RING_F_EXACT_SZ 0x0004 117 #define RTE_RING_SZ_MASK (0x7fffffffU) 218 int socket_id,
unsigned flags);
241 #define ENQUEUE_PTRS(r, ring_start, prod_head, obj_table, n, obj_type) do { \ 243 const uint32_t size = (r)->size; \ 244 uint32_t idx = prod_head & (r)->mask; \ 245 obj_type *ring = (obj_type *)ring_start; \ 246 if (likely(idx + n < size)) { \ 247 for (i = 0; i < (n & ((~(unsigned)0x3))); i+=4, idx+=4) { \ 248 ring[idx] = obj_table[i]; \ 249 ring[idx+1] = obj_table[i+1]; \ 250 ring[idx+2] = obj_table[i+2]; \ 251 ring[idx+3] = obj_table[i+3]; \ 255 ring[idx++] = obj_table[i++]; \ 257 ring[idx++] = obj_table[i++]; \ 259 ring[idx++] = obj_table[i++]; \ 262 for (i = 0; idx < size; i++, idx++)\ 263 ring[idx] = obj_table[i]; \ 264 for (idx = 0; i < n; i++, idx++) \ 265 ring[idx] = obj_table[i]; \ 272 #define DEQUEUE_PTRS(r, ring_start, cons_head, obj_table, n, obj_type) do { \ 274 uint32_t idx = cons_head & (r)->mask; \ 275 const uint32_t size = (r)->size; \ 276 obj_type *ring = (obj_type *)ring_start; \ 277 if (likely(idx + n < size)) { \ 278 for (i = 0; i < (n & (~(unsigned)0x3)); i+=4, idx+=4) {\ 279 obj_table[i] = ring[idx]; \ 280 obj_table[i+1] = ring[idx+1]; \ 281 obj_table[i+2] = ring[idx+2]; \ 282 obj_table[i+3] = ring[idx+3]; \ 286 obj_table[i++] = ring[idx++]; \ 288 obj_table[i++] = ring[idx++]; \ 290 obj_table[i++] = ring[idx++]; \ 293 for (i = 0; idx < size; i++, idx++) \ 294 obj_table[i] = ring[idx]; \ 295 for (idx = 0; i < n; i++, idx++) \ 296 obj_table[i] = ring[idx]; \ 309 #ifdef RTE_USE_C11_MEM_MODEL 310 #include "rte_ring_c11_mem.h" 312 #include "rte_ring_generic.h" 336 __rte_ring_do_enqueue(
struct rte_ring *r,
void *
const *obj_table,
337 unsigned int n,
enum rte_ring_queue_behavior behavior,
338 unsigned int is_sp,
unsigned int *free_space)
340 uint32_t prod_head, prod_next;
341 uint32_t free_entries;
343 n = __rte_ring_move_prod_head(r, is_sp, n, behavior,
344 &prod_head, &prod_next, &free_entries);
348 ENQUEUE_PTRS(r, &r[1], prod_head, obj_table, n,
void *);
350 update_tail(&r->prod, prod_head, prod_next, is_sp, 1);
352 if (free_space != NULL)
353 *free_space = free_entries - n;
378 __rte_ring_do_dequeue(
struct rte_ring *r,
void **obj_table,
379 unsigned int n,
enum rte_ring_queue_behavior behavior,
380 unsigned int is_sc,
unsigned int *available)
382 uint32_t cons_head, cons_next;
385 n = __rte_ring_move_cons_head(r, (
int)is_sc, n, behavior,
386 &cons_head, &cons_next, &entries);
390 DEQUEUE_PTRS(r, &r[1], cons_head, obj_table, n,
void *);
392 update_tail(&r->cons, cons_head, cons_next, is_sc, 0);
395 if (available != NULL)
396 *available = entries - n;
420 unsigned int n,
unsigned int *free_space)
422 return __rte_ring_do_enqueue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
423 __IS_MP, free_space);
443 unsigned int n,
unsigned int *free_space)
445 return __rte_ring_do_enqueue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
446 __IS_SP, free_space);
470 unsigned int n,
unsigned int *free_space)
472 return __rte_ring_do_enqueue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
473 r->prod.single, free_space);
554 unsigned int n,
unsigned int *available)
556 return __rte_ring_do_dequeue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
578 unsigned int n,
unsigned int *available)
580 return __rte_ring_do_dequeue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
605 unsigned int *available)
607 return __rte_ring_do_dequeue(r, obj_table, n, RTE_RING_QUEUE_FIXED,
608 r->cons.single, available);
697 static inline unsigned 700 uint32_t prod_tail = r->prod.tail;
701 uint32_t cons_tail = r->cons.tail;
702 uint32_t count = (prod_tail - cons_tail) & r->
mask;
714 static inline unsigned 760 static inline unsigned int 774 static inline unsigned int 820 unsigned int n,
unsigned int *free_space)
822 return __rte_ring_do_enqueue(r, obj_table, n,
823 RTE_RING_QUEUE_VARIABLE, __IS_MP, free_space);
843 unsigned int n,
unsigned int *free_space)
845 return __rte_ring_do_enqueue(r, obj_table, n,
846 RTE_RING_QUEUE_VARIABLE, __IS_SP, free_space);
870 unsigned int n,
unsigned int *free_space)
872 return __rte_ring_do_enqueue(r, obj_table, n, RTE_RING_QUEUE_VARIABLE,
873 r->prod.single, free_space);
898 unsigned int n,
unsigned int *available)
900 return __rte_ring_do_dequeue(r, obj_table, n,
901 RTE_RING_QUEUE_VARIABLE, __IS_MC, available);
923 unsigned int n,
unsigned int *available)
925 return __rte_ring_do_dequeue(r, obj_table, n,
926 RTE_RING_QUEUE_VARIABLE, __IS_SC, available);
950 unsigned int n,
unsigned int *available)
952 return __rte_ring_do_dequeue(r, obj_table, n,
953 RTE_RING_QUEUE_VARIABLE,
954 r->cons.single, available);
#define __rte_always_inline
const struct rte_memzone * memzone
static __rte_always_inline unsigned int rte_ring_enqueue_bulk(struct rte_ring *r, void *const *obj_table, unsigned int n, unsigned int *free_space)
char pad2 __rte_cache_aligned
char name[RTE_MEMZONE_NAMESIZE] __rte_cache_aligned
static __rte_always_inline int rte_ring_dequeue(struct rte_ring *r, void **obj_p)
static __rte_always_inline unsigned rte_ring_mc_dequeue_burst(struct rte_ring *r, void **obj_table, unsigned int n, unsigned int *available)
static int rte_ring_empty(const struct rte_ring *r)
static __rte_always_inline unsigned rte_ring_mp_enqueue_burst(struct rte_ring *r, void *const *obj_table, unsigned int n, unsigned int *free_space)
static __rte_always_inline int rte_ring_mc_dequeue(struct rte_ring *r, void **obj_p)
void rte_ring_list_dump(FILE *f)
static __rte_always_inline unsigned int rte_ring_mp_enqueue_bulk(struct rte_ring *r, void *const *obj_table, unsigned int n, unsigned int *free_space)
static __rte_always_inline int rte_ring_sp_enqueue(struct rte_ring *r, void *obj)
static __rte_always_inline int rte_ring_mp_enqueue(struct rte_ring *r, void *obj)
static unsigned int rte_ring_get_capacity(const struct rte_ring *r)
static unsigned int rte_ring_get_size(const struct rte_ring *r)
char pad0 __rte_cache_aligned
static __rte_always_inline int rte_ring_sc_dequeue(struct rte_ring *r, void **obj_p)
char pad1 __rte_cache_aligned
void rte_ring_free(struct rte_ring *r)
static __rte_always_inline unsigned rte_ring_sp_enqueue_burst(struct rte_ring *r, void *const *obj_table, unsigned int n, unsigned int *free_space)
static __rte_always_inline unsigned rte_ring_sc_dequeue_burst(struct rte_ring *r, void **obj_table, unsigned int n, unsigned int *available)
static __rte_always_inline unsigned rte_ring_dequeue_burst(struct rte_ring *r, void **obj_table, unsigned int n, unsigned int *available)
static __rte_always_inline unsigned int rte_ring_sp_enqueue_bulk(struct rte_ring *r, void *const *obj_table, unsigned int n, unsigned int *free_space)
void rte_ring_dump(FILE *f, const struct rte_ring *r)
static unsigned rte_ring_count(const struct rte_ring *r)
struct rte_ring * rte_ring_create(const char *name, unsigned count, int socket_id, unsigned flags)
static __rte_always_inline unsigned int rte_ring_dequeue_bulk(struct rte_ring *r, void **obj_table, unsigned int n, unsigned int *available)
static __rte_always_inline unsigned int rte_ring_sc_dequeue_bulk(struct rte_ring *r, void **obj_table, unsigned int n, unsigned int *available)
struct rte_ring * rte_ring_lookup(const char *name)
static unsigned rte_ring_free_count(const struct rte_ring *r)
static __rte_always_inline int rte_ring_enqueue(struct rte_ring *r, void *obj)
static __rte_always_inline unsigned rte_ring_enqueue_burst(struct rte_ring *r, void *const *obj_table, unsigned int n, unsigned int *free_space)
__rte_experimental void rte_ring_reset(struct rte_ring *r)
static __rte_always_inline unsigned int rte_ring_mc_dequeue_bulk(struct rte_ring *r, void **obj_table, unsigned int n, unsigned int *available)
int rte_ring_init(struct rte_ring *r, const char *name, unsigned count, unsigned flags)
static int rte_ring_full(const struct rte_ring *r)
ssize_t rte_ring_get_memsize(unsigned count)
#define RTE_MEMZONE_NAMESIZE