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//usr/include/rdma/rvt-abi.h

/* 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

struct rvt_wqe_sge {
	__aligned_u64 addr;
	__u32 length;
	__u32 lkey;
};

/*
 * 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[];
};

/*
 * Receive work request queue entry.
 * The size of the sg_list is determined when the QP (or SRQ) is created
 * and stored in qp->r_rq.max_sge (or srq->rq.max_sge).
 */
struct rvt_rwqe {
	__u64 wr_id;
	__u8 num_sge;
	__u8 padding[7];
	struct rvt_wqe_sge sg_list[];
};

/*
 * This structure is used to contain the head pointer, tail pointer,
 * and receive work queue entries as a single memory allocation so
 * it can be mmap'ed into user space.
 * Note that the wq array elements are variable size so you can't
 * just index into the array to get the N'th element;
 * use get_rwqe_ptr() for user space and rvt_get_rwqe_ptr()
 * for kernel space.
 */
struct rvt_rwq {
	/* new work requests posted to the head */
	RDMA_ATOMIC_UAPI(__u32, head);
	/* receives pull requests from here. */
	RDMA_ATOMIC_UAPI(__u32, tail);
	struct rvt_rwqe wq[];
};
#endif /* RVT_ABI_USER_H */

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hfi DIR	-	drwxr-xr-x	2026-02-03 23:01:16	Edit Download recursive recursive
bnxt_re-abi.h	3.43 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
cxgb4-abi.h	3.05 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
efa-abi.h	2.89 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
hns-abi.h	2.16 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
ib_user_ioctl_cmds.h	9.21 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
ib_user_ioctl_verbs.h	7.70 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
ib_user_mad.h	8.33 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
ib_user_sa.h	2.25 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
ib_user_verbs.h	28.29 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
irdma-abi.h	2.14 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
mana-abi.h	1.16 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
mlx4-abi.h	5.00 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
mlx5-abi.h	13.54 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
mlx5_user_ioctl_cmds.h	10.49 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
mlx5_user_ioctl_verbs.h	3.50 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
mthca-abi.h	2.98 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
ocrdma-abi.h	4.02 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
qedr-abi.h	4.21 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
rdma_netlink.h	14.64 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
rdma_user_cm.h	6.96 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
rdma_user_ioctl.h	3.66 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
rdma_user_ioctl_cmds.h	2.55 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
rdma_user_rxe.h	4.67 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
rvt-abi.h	1.70 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
siw-abi.h	3.32 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive
vmw_pvrdma-abi.h	7.82 KB	lrw-r--r--	2026-02-02 09:27:46	Edit Download recursive recursive

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