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/* 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 <linux/types.h>
#include <rdma/ib_user_verbs.h>
#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 */
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