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dabac6e460
The rvt_rwqe and rvt_rwq struct elements are shared between rdmavt and the providers but are 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. Move rvt_rwqe and rvt_rwq struct into rvt-abi.h header in uapi directory. Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com> Signed-off-by: Kamenee Arumugam <kamenee.arumugam@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
61 lines
1.7 KiB
C
61 lines
1.7 KiB
C
/* 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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#include <rdma/ib_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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/*
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* Receive work request queue entry.
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* The size of the sg_list is determined when the QP (or SRQ) is created
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* and stored in qp->r_rq.max_sge (or srq->rq.max_sge).
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*/
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struct rvt_rwqe {
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__u64 wr_id;
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__u8 num_sge;
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__u8 padding[7];
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struct ib_sge sg_list[];
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};
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/*
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* This structure is used to contain the head pointer, tail pointer,
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* and receive work queue entries as a single memory allocation so
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* it can be mmap'ed into user space.
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* Note that the wq array elements are variable size so you can't
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* just index into the array to get the N'th element;
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* use get_rwqe_ptr() for user space and rvt_get_rwqe_ptr()
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* for kernel space.
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*/
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struct rvt_rwq {
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/* new work requests posted to the head */
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RDMA_ATOMIC_UAPI(__u32, head);
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/* receives pull requests from here. */
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RDMA_ATOMIC_UAPI(__u32, tail);
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struct rvt_rwqe wq[];
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};
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#endif /* RVT_ABI_USER_H */
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