DPDK
18.11.11
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#include <rte_ring.h>
Data Fields | |
char name[RTE_MEMZONE_NAMESIZE] | __rte_cache_aligned |
int | flags |
const struct rte_memzone * | memzone |
uint32_t | size |
uint32_t | mask |
uint32_t | capacity |
char pad0 | __rte_cache_aligned |
struct rte_ring_headtail prod | __rte_cache_aligned |
char pad1 | __rte_cache_aligned |
struct rte_ring_headtail cons | __rte_cache_aligned |
char pad2 | __rte_cache_aligned |
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.
Definition at line 83 of file rte_ring.h.
char name [RTE_MEMZONE_NAMESIZE] __rte_cache_aligned |
Name of the ring.
Definition at line 89 of file rte_ring.h.
int flags |
Flags supplied at creation.
Definition at line 90 of file rte_ring.h.
const struct rte_memzone* memzone |
Memzone, if any, containing the rte_ring
Definition at line 91 of file rte_ring.h.
uint32_t size |
Size of ring.
Definition at line 93 of file rte_ring.h.
uint32_t mask |
Mask (size-1) of ring.
Definition at line 94 of file rte_ring.h.
uint32_t capacity |
Usable size of ring
Definition at line 95 of file rte_ring.h.
char pad0 __rte_cache_aligned |
empty cache line
Definition at line 97 of file rte_ring.h.
struct rte_ring_headtail prod __rte_cache_aligned |
Ring producer status.
Definition at line 100 of file rte_ring.h.
char pad1 __rte_cache_aligned |
empty cache line
Definition at line 101 of file rte_ring.h.
struct rte_ring_headtail cons __rte_cache_aligned |
Ring consumer status.
Definition at line 104 of file rte_ring.h.
char pad2 __rte_cache_aligned |
empty cache line
Definition at line 105 of file rte_ring.h.