linux/drivers/infiniband/core/restrack.h
Leon Romanovsky 41eda65c61 RDMA/restrack: Hide restrack DB from IB/core
There is no need to expose internals of restrack DB to IB/core.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-02-18 21:04:36 -07:00

40 lines
1.1 KiB
C

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