diff options
| author | Leon Romanovsky <leonro@mellanox.com> | 2019-02-18 22:25:47 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-02-18 21:04:36 -0700 |
| commit | 41eda65c6100930d95bb854a0114f3544593070c (patch) | |
| tree | 64ae996d521909ccb72a35ba4a5485cfcc125aa9 /drivers/infiniband/core/restrack.h | |
| parent | 48118527186fb255461ebf3685ab0f1c2680bd9c (diff) | |
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>
Diffstat (limited to 'drivers/infiniband/core/restrack.h')
| -rw-r--r-- | drivers/infiniband/core/restrack.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/infiniband/core/restrack.h b/drivers/infiniband/core/restrack.h new file mode 100644 index 000000000000..cf89ef0b8ed5 --- /dev/null +++ b/drivers/infiniband/core/restrack.h @@ -0,0 +1,39 @@ +/* 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_ */ |