[v7,0/4] kni: add IOVA=VA support
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Message ID 20190717090408.13717-1-vattunuru@marvell.com
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  • kni: add IOVA=VA support
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Vamsi Krishna Attunuru July 17, 2019, 9:04 a.m. UTC
From: Vamsi Attunuru <vattunuru@marvell.com>

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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 (3):
  mempool: modify mempool populate() to skip objects from page
    boundaries
  kni: add IOVA = VA support in KNI lib
  kni: modify IOVA mode checks to support VA

 doc/guides/prog_guide/kernel_nic_interface.rst    |  8 +++
 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                           |  1 +
 lib/librte_kni/meson.build                        |  1 +
 lib/librte_kni/rte_kni.c                          | 59 +++++++++++++++++--
 lib/librte_mempool/rte_mempool.c                  |  2 +-
 lib/librte_mempool/rte_mempool_ops_default.c      | 33 ++++++++++-
 12 files changed, 223 insertions(+), 31 deletions(-)