[dpdk-dev] [PATCH v10 0/5] kni: add IOVA=VA support

Vamsi Krishna Attunuru vattunuru at marvell.com
Wed Sep 25 06:00:14 CEST 2019


-----Original Message-----
From: vattunuru at marvell.com <vattunuru at marvell.com> 
Sent: Friday, August 16, 2019 11:43 AM
To: dev at dpdk.org
Cc: thomas at monjalon.net; Jerin Jacob Kollanukkaran <jerinj at marvell.com>; olivier.matz at 6wind.com; ferruh.yigit at intel.com; anatoly.burakov at intel.com; arybchenko at solarflare.com; Kiran Kumar Kokkilagadda <kirankumark at marvell.com>; Vamsi Krishna Attunuru <vattunuru at marvell.com>
Subject: [dpdk-dev] [PATCH v10 0/5] kni: add IOVA=VA support 

From: Vamsi Attunuru <vattunuru at marvell.com>

V10 Changes:
* Fixed function return code on failure when min_chunk_size > pg_sz.
* Marked new mempool populate routine as EXPERIMENTAL.

V9 Changes:
* Used rte_mempool_ops_calc_mem_size() instead of default handler in the new mempool populate routine.
* Check min_chunk_size and return values.
* Removed ethdev_info memset to '0' and moved pci dev_info populate into
kni_dev_pci_addr_get() routine.
* Addressed misc. review comments.

V8 Changes:
* Remove default mempool populate() routine changes.
* Add kni app specific mempool create & free routines.
* Add new mempool populate routine to allocate page-aligned memzones with page size to make sure all mempool objects reside on a page.
* Update release notes and map files.

V7 Changes:
* Removed previously proposed mempool flag and made those page boundary checks default in mempool populate() except for the objects size bigger than the size of page.
* Removed KNI example application related changes since pool related requirement is taken care in mempool lib.
* All PCI dev related info is moved under rte_eal_iova_mode() == VA check.
* Added wrapper functions in KNI module to hide IOVA checks and make address translation routines more readable.
* Updated IOVA mode checks that enforcing IOVA=PA mode when IOVA=VA mode is enabled.

V6 Changes:
* Added new mempool flag to ensure mbuf memory is not scattered across page boundaries.
* Added KNI kernel module required PCI device information.
* Modified KNI example application to create mempool with new mempool flag.

V5 changes:
* Fixed build issue with 32b build

V4 changes:
* Fixed build issues with older kernel versions
* This approach will only work with kernel above 4.4.0

V3 Changes:
* Add new approach to work kni with IOVA=VA mode using iommu_iova_to_phys API.

Kiran Kumar K (1):
  kni: add IOVA=VA support in KNI module

Vamsi Attunuru (4):
  mempool: populate mempool with the page sized chunks
  kni: add IOVA=VA support in KNI lib
  kni: add app specific mempool create and free routines
  kni: modify IOVA mode checks to support VA

 doc/guides/prog_guide/kernel_nic_interface.rst    |  8 ++
 doc/guides/rel_notes/release_19_11.rst            |  5 ++
 examples/kni/main.c                               |  5 +-
 kernel/linux/kni/compat.h                         |  4 +
 kernel/linux/kni/kni_dev.h                        |  4 +
 kernel/linux/kni/kni_misc.c                       | 71 ++++++++++++++---
 kernel/linux/kni/kni_net.c                        | 59 ++++++++++----
 lib/librte_eal/linux/eal/eal.c                    |  4 +-
 lib/librte_eal/linux/eal/include/rte_kni_common.h |  8 ++
 lib/librte_kni/Makefile                           |  2 +
 lib/librte_kni/meson.build                        |  2 +
 lib/librte_kni/rte_kni.c                          | 95 +++++++++++++++++++++--
 lib/librte_kni/rte_kni.h                          | 48 ++++++++++++
 lib/librte_kni/rte_kni_version.map                |  2 +
 lib/librte_mempool/rte_mempool.c                  | 69 ++++++++++++++++
 lib/librte_mempool/rte_mempool.h                  | 20 +++++
 lib/librte_mempool/rte_mempool_version.map        |  1 +
 17 files changed, 378 insertions(+), 29 deletions(-)


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