[dpdk-dev] [PATCH v1 0/8] Bus control framework

Gaetan Rivet gaetan.rivet at 6wind.com
Thu Oct 12 10:18:22 CEST 2017

Probing policy was introduced in the previous release as a configuration item.
It was thus added to the generic bus structure, breaking its ABI.

In this release, the IOVA mode can be read from a bus to configure the
EAL. This new configuration element also broke the bus ABI when it was

As new operators had to be implemented for the probe policy item, these
patches were developed to help mitigate this issue.

This control framework allows to expand the rte_bus API without breaking
its ABI. It is meant to be used with configuration elements that may
only be valid for a few buses, while the others would remain untouched
and unaware of the evolution.

A central control operator is used, similarly to the working of rte_flow
API in the ether layer. Each driver thus chooses to expose a set of
operators relevant to its implementation. The caller is then free to use
those if they are available.

Both Probe mode and IOVA mode operators are implemented for the PCI bus.

This patchset depends on:

Move PCI away from the EAL

Gaetan Rivet (8):
  bus: rename scan policy as probe policy
  bus: introduce opaque control framework
  bus: remove probe mode configuration structure
  bus: add probe mode setter
  bus/pci: implement ctrl operator
  bus: add IOVA mode as a ctrl operation
  bus/pci: implement IOVA mode getter
  bus: remove redundant IOVA mode getter

 drivers/bus/pci/bsd/pci.c                       |   9 +-
 drivers/bus/pci/include/rte_bus_pci.h           |  12 +--
 drivers/bus/pci/linux/pci.c                     |  20 ++--
 drivers/bus/pci/pci_common.c                    |  53 +++++++++-
 drivers/bus/pci/private.h                       |  13 +++
 lib/librte_eal/bsdapp/eal/rte_eal_version.map   |   1 -
 lib/librte_eal/common/eal_common_bus.c          |  57 +++++++++--
 lib/librte_eal/common/eal_common_devargs.c      |   8 --
 lib/librte_eal/common/eal_common_options.c      |  17 +---
 lib/librte_eal/common/include/rte_bus.h         | 127 ++++++++++++++++--------
 lib/librte_eal/linuxapp/eal/rte_eal_version.map |   1 -
 11 files changed, 222 insertions(+), 96 deletions(-)


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