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 added. 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 http://dpdk.org/ml/archives/dev/2017-August/073512.html 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(-) -- 2.1.4
