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6bf9d8f6f0
The header files in RDMA subsystem are dual licensed and can be described by simple SPDX tag, so replace all of them at once together with making them use the same coding style for header guard defines. Link: https://lore.kernel.org/r/20200719072521.135260-1-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
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/*
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* Copyright(c) 2016 - 2018 Intel Corporation.
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*/
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#ifndef DEF_RDMAVT_INCCQ_H
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#define DEF_RDMAVT_INCCQ_H
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#include <linux/kthread.h>
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#include <rdma/ib_user_verbs.h>
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#include <rdma/ib_verbs.h>
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/*
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* Define an ib_cq_notify value that is not valid so we know when CQ
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* notifications are armed.
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*/
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#define RVT_CQ_NONE (IB_CQ_NEXT_COMP + 1)
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/*
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* Define read macro that apply smp_load_acquire memory barrier
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* when reading indice of circular buffer that mmaped to user space.
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*/
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#define RDMA_READ_UAPI_ATOMIC(member) smp_load_acquire(&(member).val)
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/*
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* Define write macro that uses smp_store_release memory barrier
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* when writing indice of circular buffer that mmaped to user space.
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*/
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#define RDMA_WRITE_UAPI_ATOMIC(member, x) smp_store_release(&(member).val, x)
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#include <rdma/rvt-abi.h>
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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_k_cq_wc {
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u32 head; /* index of next entry to fill */
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u32 tail; /* index of next ib_poll_cq() entry */
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struct ib_wc kqueue[];
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};
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/*
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* The completion queue structure.
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*/
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struct rvt_cq {
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struct ib_cq ibcq;
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struct work_struct comptask;
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spinlock_t lock; /* protect changes in this struct */
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u8 notify;
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u8 triggered;
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u8 cq_full;
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int comp_vector_cpu;
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struct rvt_dev_info *rdi;
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struct rvt_cq_wc *queue;
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struct rvt_mmap_info *ip;
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struct rvt_k_cq_wc *kqueue;
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};
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static inline struct rvt_cq *ibcq_to_rvtcq(struct ib_cq *ibcq)
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{
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return container_of(ibcq, struct rvt_cq, ibcq);
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}
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bool rvt_cq_enter(struct rvt_cq *cq, struct ib_wc *entry, bool solicited);
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#endif /* DEF_RDMAVT_INCCQH */
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