From 239b0e52d8aa64d2559c672fd8c29cf1fffc3ec7 Mon Sep 17 00:00:00 2001 From: Kamenee Arumugam Date: Fri, 28 Jun 2019 14:04:17 -0400 Subject: IB/hfi1: Move rvt_cq_wc struct into uapi directory The rvt_cq_wc struct elements are shared between rdmavt and the providers but not in uapi directory. As per the comment in https://marc.info/?l=linux-rdma&m=152296522708522&w=2 The hfi1 driver and the rdma core driver are not using shared structures in the uapi directory. In that case, move rvt_cq_wc struct into the rvt-abi.h header file and create a rvt_k_cq_w for the kernel completion queue. Signed-off-by: Kamenee Arumugam Reviewed-by: Mike Marciniszyn Signed-off-by: Mike Marciniszyn Signed-off-by: Dennis Dalessandro Signed-off-by: Jason Gunthorpe --- include/uapi/rdma/rvt-abi.h | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 include/uapi/rdma/rvt-abi.h (limited to 'include/uapi/rdma') diff --git a/include/uapi/rdma/rvt-abi.h b/include/uapi/rdma/rvt-abi.h new file mode 100644 index 000000000000..8e5f7e0c15fe --- /dev/null +++ b/include/uapi/rdma/rvt-abi.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ + +/* + * This file contains defines, structures, etc. that are used + * to communicate between kernel and user code. + */ + +#ifndef RVT_ABI_USER_H +#define RVT_ABI_USER_H + +#include +#include +#ifndef RDMA_ATOMIC_UAPI +#define RDMA_ATOMIC_UAPI(_type, _name) struct{ _type val; } _name +#endif + +/* + * This structure is used to contain the head pointer, tail pointer, + * and completion queue entries as a single memory allocation so + * it can be mmap'ed into user space. + */ +struct rvt_cq_wc { + /* index of next entry to fill */ + RDMA_ATOMIC_UAPI(__u32, head); + /* index of next ib_poll_cq() entry */ + RDMA_ATOMIC_UAPI(__u32, tail); + + /* these are actually size ibcq.cqe + 1 */ + struct ib_uverbs_wc uqueue[]; +}; + +#endif /* RVT_ABI_USER_H */ -- cgit v1.2.3