From: Leon Romanovsky <leonro@xxxxxxxxxxxx> It is based on previous patch set: https://patchwork.kernel.org/project/linux-rdma/list/?series=41949 -------------------------------------------------- >From Jason, This consolidates the driver udata creation into the handler dispatching code for write, write_ex and ioctl. This makes all of the handlers have a consistent experience when accessing the driver's udata. It is always located in an uverbs_attr_bundle, and always set before the first handler is invoked. Reworking like this allows the dispatcher to control the memory layout of the udata and removes the built-in assumption that the udata directly follows the command data on the write path. This is the next step toward making the write, write_ex, and ioctl interfaces use a uniform handler calling convention. This is also the first step toward passing the 'struct uverbs_attr_bundle' into the drivers, instead of using the more limited 'struct ib_udata'. At this point all the driver callbacks could recover the attr_bundle by using container_of on the udata pointer. Thanks Jason Gunthorpe (10): RDMA/uverbs: Use C99 flex array syntax for trailing members in uapi headers RDMA/uverbs: Add missing driver_data RDMA/uverbs: Replace ib_uverbs_file with uverbs_attr_bundle for write RDMA/uverbs: Make write() handlers return 0 on success RDMA/uverbs: Do not pass ib_uverbs_file to ioctl methods RDMA/uverbs: Add structure size info to write commands RDMA/uverbs: Prohibit write() calls with too small buffers RDMA/uverbs: Use uverbs_attr_bundle to pass udata for write_ex RDMA/uverbs: Use uverbs_attr_bundle to pass udata for write RDMA/uverbs: Use uverbs_attr_bundle to pass udata for ioctl() drivers/infiniband/core/rdma_core.c | 19 +- drivers/infiniband/core/rdma_core.h | 16 +- drivers/infiniband/core/uverbs_cmd.c | 1082 +++++++++-------- drivers/infiniband/core/uverbs_ioctl.c | 10 +- drivers/infiniband/core/uverbs_main.c | 83 +- drivers/infiniband/core/uverbs_std_types.c | 3 +- .../core/uverbs_std_types_counters.c | 4 +- drivers/infiniband/core/uverbs_std_types_cq.c | 13 +- drivers/infiniband/core/uverbs_std_types_dm.c | 5 +- .../core/uverbs_std_types_flow_action.c | 10 +- drivers/infiniband/core/uverbs_std_types_mr.c | 2 +- drivers/infiniband/core/uverbs_uapi.c | 19 +- drivers/infiniband/hw/mlx5/devx.c | 25 +- drivers/infiniband/hw/mlx5/flow.c | 6 +- include/rdma/ib_verbs.h | 6 +- include/rdma/uverbs_ioctl.h | 41 +- include/rdma/uverbs_std_types.h | 52 +- include/uapi/rdma/ib_user_verbs.h | 70 +- 18 files changed, 807 insertions(+), 659 deletions(-) -- 2.19.1
