40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/*
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* Copyright (c) 2017-2019 Mellanox Technologies. All rights reserved.
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*/
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#ifndef _RDMA_CORE_RESTRACK_H_
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#define _RDMA_CORE_RESTRACK_H_
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#include <linux/mutex.h>
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#include <linux/rwsem.h>
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/**
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* struct rdma_restrack_root - main resource tracking management
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* entity, per-device
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*/
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struct rdma_restrack_root {
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/*
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* @rwsem: Read/write lock to protect erase of entry.
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* Lists and insertions are protected by XArray internal lock.
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*/
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struct rw_semaphore rwsem;
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/**
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* @xa: Array of XArray structures to hold restrack entries.
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* We want to use array of XArrays because insertion is type
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* dependent. For types with xisiting unique ID (like QPN),
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* we will insert to that unique index. For other types,
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* we insert based on pointers and auto-allocate unique index.
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*/
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struct xarray xa[RDMA_RESTRACK_MAX];
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/**
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* @next_id: Next ID to support cyclic allocation
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*/
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u32 next_id[RDMA_RESTRACK_MAX];
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};
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int rdma_restrack_init(struct ib_device *dev);
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void rdma_restrack_clean(struct ib_device *dev);
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#endif /* _RDMA_CORE_RESTRACK_H_ */
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