This series from Michael exposes PCI atomic operations capabilities to user space applications PCI atomic operations were first introduced in PCIe Base Specification 2.1. The supported operations are swap, fetch & add and compare & swap. Each operation can be supported in a few different operation sizes therefore we expose the capabilities in a bitmask of supported operation sizes per operation type. Each device needs to enable the above PCI capabilities and report on to let applications use them. The mlx5 driver exposes the capabilities by using the DEVX interface. PR was sent: https://github.com/linux-rdma/rdma-core/pull/458 Michael Guralnik (3): mlx5: Infrastructure for building mailbox for devx verbs: Expose PCI atomic operations capabilities in query_device_ex mlx5: Report PCI atomic capabilities libibverbs/man/ibv_query_device_ex.3 | 17 ++++++ libibverbs/verbs.h | 17 ++++++ providers/mlx5/mlx5_ifc.h | 100 +++++++++++++++++++++++++++++++++++ providers/mlx5/mlx5dv.h | 59 +++++++++++++++++++++ providers/mlx5/verbs.c | 31 +++++++++++ 5 files changed, 224 insertions(+) create mode 100644 providers/mlx5/mlx5_ifc.h -- 1.8.3.1
