[dpdk-dev] [PATCH v4 5/7] mempool: detect physical contiguous object in pool
Santosh Shukla
santosh.shukla at caviumnetworks.com
Tue Aug 15 08:07:41 CEST 2017
The memory area containing all the objects must be physically
contiguous.
Introducing MEMPOOL_F_CAPA_PHYS_CONTIG flag for such use-case.
The flag useful to detect whether pool area has sufficient space
to fit all objects. If not then return -ENOSPC.
This way, we make sure that all object within a pool is contiguous.
Signed-off-by: Santosh Shukla <santosh.shukla at caviumnetworks.com>
Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
---
lib/librte_mempool/rte_mempool.c | 8 ++++++++
lib/librte_mempool/rte_mempool.h | 1 +
2 files changed, 9 insertions(+)
diff --git a/lib/librte_mempool/rte_mempool.c b/lib/librte_mempool/rte_mempool.c
index d518c53de..19e5e6ddf 100644
--- a/lib/librte_mempool/rte_mempool.c
+++ b/lib/librte_mempool/rte_mempool.c
@@ -370,6 +370,14 @@ rte_mempool_populate_phys(struct rte_mempool *mp, char *vaddr,
total_elt_sz = mp->header_size + mp->elt_size + mp->trailer_size;
+ /* Detect pool area has sufficient space for elements */
+ if (mp->flags & MEMPOOL_F_CAPA_PHYS_CONTIG) {
+ if (len < total_elt_sz * mp->size) {
+ RTE_LOG(ERR, MEMPOOL, "pool area %" PRIx64 " not enough\n", (uint64_t)len);
+ return -ENOSPC;
+ }
+ }
+
memhdr = rte_zmalloc("MEMPOOL_MEMHDR", sizeof(*memhdr), 0);
if (memhdr == NULL)
return -ENOMEM;
diff --git a/lib/librte_mempool/rte_mempool.h b/lib/librte_mempool/rte_mempool.h
index bc4a1dac7..a4bfdb56e 100644
--- a/lib/librte_mempool/rte_mempool.h
+++ b/lib/librte_mempool/rte_mempool.h
@@ -265,6 +265,7 @@ struct rte_mempool {
#define MEMPOOL_F_SC_GET 0x0008 /**< Default get is "single-consumer".*/
#define MEMPOOL_F_POOL_CREATED 0x0010 /**< Internal: pool is created. */
#define MEMPOOL_F_NO_PHYS_CONTIG 0x0020 /**< Don't need physically contiguous objs. */
+#define MEMPOOL_F_CAPA_PHYS_CONTIG 0x0040 /**< Detect physcially contiguous objs */
/**
* @internal When debug is enabled, store some statistics.
--
2.11.0
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