mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-16 07:24:39 +08:00
b09c4d7012
Use rdma_restrack_set_name() and rdma_restrack_parent_name() instead of tricky uses of rdma_restrack_attach_task()/rdma_restrack_uadd(). This uniformly makes all restracks add'd using rdma_restrack_add(). Link: https://lore.kernel.org/r/20200922091106.2152715-6-leon@kernel.org Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
149 lines
3.5 KiB
C
149 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
|
|
/*
|
|
* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _RDMA_RESTRACK_H_
|
|
#define _RDMA_RESTRACK_H_
|
|
|
|
#include <linux/typecheck.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/completion.h>
|
|
#include <linux/sched/task.h>
|
|
#include <uapi/rdma/rdma_netlink.h>
|
|
#include <linux/xarray.h>
|
|
|
|
struct ib_device;
|
|
struct sk_buff;
|
|
|
|
/**
|
|
* enum rdma_restrack_type - HW objects to track
|
|
*/
|
|
enum rdma_restrack_type {
|
|
/**
|
|
* @RDMA_RESTRACK_PD: Protection domain (PD)
|
|
*/
|
|
RDMA_RESTRACK_PD,
|
|
/**
|
|
* @RDMA_RESTRACK_CQ: Completion queue (CQ)
|
|
*/
|
|
RDMA_RESTRACK_CQ,
|
|
/**
|
|
* @RDMA_RESTRACK_QP: Queue pair (QP)
|
|
*/
|
|
RDMA_RESTRACK_QP,
|
|
/**
|
|
* @RDMA_RESTRACK_CM_ID: Connection Manager ID (CM_ID)
|
|
*/
|
|
RDMA_RESTRACK_CM_ID,
|
|
/**
|
|
* @RDMA_RESTRACK_MR: Memory Region (MR)
|
|
*/
|
|
RDMA_RESTRACK_MR,
|
|
/**
|
|
* @RDMA_RESTRACK_CTX: Verbs contexts (CTX)
|
|
*/
|
|
RDMA_RESTRACK_CTX,
|
|
/**
|
|
* @RDMA_RESTRACK_COUNTER: Statistic Counter
|
|
*/
|
|
RDMA_RESTRACK_COUNTER,
|
|
/**
|
|
* @RDMA_RESTRACK_MAX: Last entry, used for array dclarations
|
|
*/
|
|
RDMA_RESTRACK_MAX
|
|
};
|
|
|
|
/**
|
|
* struct rdma_restrack_entry - metadata per-entry
|
|
*/
|
|
struct rdma_restrack_entry {
|
|
/**
|
|
* @valid: validity indicator
|
|
*
|
|
* The entries are filled during rdma_restrack_add,
|
|
* can be attempted to be free during rdma_restrack_del.
|
|
*
|
|
* As an example for that, see mlx5 QPs with type MLX5_IB_QPT_HW_GSI
|
|
*/
|
|
bool valid;
|
|
/*
|
|
* @kref: Protect destroy of the resource
|
|
*/
|
|
struct kref kref;
|
|
/*
|
|
* @comp: Signal that all consumers of resource are completed their work
|
|
*/
|
|
struct completion comp;
|
|
/**
|
|
* @task: owner of resource tracking entity
|
|
*
|
|
* There are two types of entities: created by user and created
|
|
* by kernel.
|
|
*
|
|
* This is relevant for the entities created by users.
|
|
* For the entities created by kernel, this pointer will be NULL.
|
|
*/
|
|
struct task_struct *task;
|
|
/**
|
|
* @kern_name: name of owner for the kernel created entities.
|
|
*/
|
|
const char *kern_name;
|
|
/**
|
|
* @type: various objects in restrack database
|
|
*/
|
|
enum rdma_restrack_type type;
|
|
/**
|
|
* @user: user resource
|
|
*/
|
|
bool user;
|
|
/**
|
|
* @id: ID to expose to users
|
|
*/
|
|
u32 id;
|
|
};
|
|
|
|
int rdma_restrack_count(struct ib_device *dev,
|
|
enum rdma_restrack_type type);
|
|
/**
|
|
* rdma_is_kernel_res() - check the owner of resource
|
|
* @res: resource entry
|
|
*/
|
|
static inline bool rdma_is_kernel_res(const struct rdma_restrack_entry *res)
|
|
{
|
|
return !res->user;
|
|
}
|
|
|
|
/**
|
|
* rdma_restrack_get() - grab to protect resource from release
|
|
* @res: resource entry
|
|
*/
|
|
int __must_check rdma_restrack_get(struct rdma_restrack_entry *res);
|
|
|
|
/**
|
|
* rdma_restrack_put() - release resource
|
|
* @res: resource entry
|
|
*/
|
|
int rdma_restrack_put(struct rdma_restrack_entry *res);
|
|
|
|
/*
|
|
* Helper functions for rdma drivers when filling out
|
|
* nldev driver attributes.
|
|
*/
|
|
int rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, u32 value);
|
|
int rdma_nl_put_driver_u32_hex(struct sk_buff *msg, const char *name,
|
|
u32 value);
|
|
int rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, u64 value);
|
|
int rdma_nl_put_driver_u64_hex(struct sk_buff *msg, const char *name,
|
|
u64 value);
|
|
int rdma_nl_put_driver_string(struct sk_buff *msg, const char *name,
|
|
const char *str);
|
|
int rdma_nl_stat_hwcounter_entry(struct sk_buff *msg, const char *name,
|
|
u64 value);
|
|
|
|
struct rdma_restrack_entry *rdma_restrack_get_byid(struct ib_device *dev,
|
|
enum rdma_restrack_type type,
|
|
u32 id);
|
|
#endif /* _RDMA_RESTRACK_H_ */
|