33 lines
824 B
C
33 lines
824 B
C
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/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
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/*
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* This file contains defines, structures, etc. that are used
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* to communicate between kernel and user code.
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*/
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#ifndef RVT_ABI_USER_H
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#define RVT_ABI_USER_H
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#include <linux/types.h>
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#include <rdma/ib_user_verbs.h>
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#ifndef RDMA_ATOMIC_UAPI
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#define RDMA_ATOMIC_UAPI(_type, _name) struct{ _type val; } _name
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#endif
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/*
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* This structure is used to contain the head pointer, tail pointer,
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* and completion queue entries as a single memory allocation so
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* it can be mmap'ed into user space.
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*/
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struct rvt_cq_wc {
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/* index of next entry to fill */
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RDMA_ATOMIC_UAPI(__u32, head);
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/* index of next ib_poll_cq() entry */
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RDMA_ATOMIC_UAPI(__u32, tail);
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/* these are actually size ibcq.cqe + 1 */
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struct ib_uverbs_wc uqueue[];
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};
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#endif /* RVT_ABI_USER_H */
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