[dpdk-dev] [PATCH 0/4] Infrastructure to support octeontx HW mempool manager

[Santosh Shukla]

In order to support octeontx HW mempool manager, the common mempool layer must
meet below condition.
- buffer start address should be block size aligned.
- buffers must have the physically contiguous address within the pool.

And right now mempool doesn't support both.

Patchset adds infrastrucure to support both condition in a _generic_ way.
Proposed solution won't effect existing mempool drivers or its functionality.

Summary:
Introducing capability flag. Now mempool drivers can advertise their
capabilities to common mempool layer(at the pool creation time).
Handlers are introduced in order to support capability flag.

Flags:
* MEMPOOL_F_POOL_CONTIG - If flag is set then Detect whether the buffer
has the physically contiguous address with in a hugepage.

* MEMPOOL_F_POOL_BLK_SZ_ALIGNED - If flag is set then make sure that buffer
addresses are block size aligned.

API:
Two handles are introduced:
* rte_mempool_ops_get_hw_cap - advertise HW mempool manager capability.
* rte_mempool_ops_update_range - Update pa/va start and end address range to
HW mempool manager.

Testing:
* Tested for x86_64 for rte_ring and stack.
* Tested for Octeontx HW mempool block.

Checkpatch status:
* Noticed false positive checkpatch warning:
WARNING: line over 80 characters
#30: FILE: lib/librte_mempool/rte_mempool.c:374:
+                       RTE_LOG(ERR, MEMPOOL, "nb_mbufs not fitting in one hugepage,..exit\n");

WARNING: line over 80 characters
#46: FILE: lib/librte_mempool/rte_mempool.h:269:
+#define MEMPOOL_F_POOL_CONTIG    0x0040 /**< Detect physcially contiguous objs */

total: 0 errors, 2 warnings, 21 lines checked

Thanks.

Santosh Shukla (4):
  mempool: get the external mempool capability
  mempool: detect physical contiguous object in pool
  mempool: introduce block size align flag
  mempool: update range info to pool

 lib/librte_mempool/rte_mempool.c           | 34 ++++++++++++++++++++--
 lib/librte_mempool/rte_mempool.h           | 46 ++++++++++++++++++++++++++++++
 lib/librte_mempool/rte_mempool_ops.c       | 27 ++++++++++++++++++
 lib/librte_mempool/rte_mempool_version.map |  8 ++++++
 4 files changed, 112 insertions(+), 3 deletions(-)

-- 
2.13.0