Add a new field to the rte_ring structure to store the memzone pointer which
contains the ring. For rings created using rte_ring_create(), the field will
be set automatically.
This new field will allow users of the ring to query the numa node a ring is
allocated on, or to get the physical address of the ring, if so needed.
The rte_ring structure will also maintain ABI compatibility, as the
structure members, after the new one, are set to be cache line aligned,
so leaving a space.
Signed-off-by: Bruce Richardson <bruce.richardson at intel.com>
---
lib/librte_ring/rte_ring.c | 1 +
lib/librte_ring/rte_ring.h | 4 ++++
2 files changed, 5 insertions(+)
diff --git a/lib/librte_ring/rte_ring.c b/lib/librte_ring/rte_ring.c
index c9e59d4..4e78e14 100644
--- a/lib/librte_ring/rte_ring.c
+++ b/lib/librte_ring/rte_ring.c
@@ -196,6 +196,7 @@ rte_ring_create(const char *name, unsigned count, int
socket_id,
rte_ring_init(r, name, count, flags);
te->data = (void *) r;
+ r->memzone = mz;
TAILQ_INSERT_TAIL(ring_list, te, next);
} else {
diff --git a/lib/librte_ring/rte_ring.h b/lib/librte_ring/rte_ring.h
index af68888..df45f3f 100644
--- a/lib/librte_ring/rte_ring.h
+++ b/lib/librte_ring/rte_ring.h
@@ -134,6 +134,8 @@ struct rte_ring_debug_stats {
* if RTE_RING_PAUSE_REP not defined. */
#endif
+struct rte_memzone; /* forward declaration, so as not to require memzone.h */
+
/**
* An RTE ring structure.
*
@@ -147,6 +149,8 @@ struct rte_ring_debug_stats {
struct rte_ring {
char name[RTE_RING_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 {
--
2.4.3
