Na}{

File Content: `restrack.h`

/* 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);

void rdma_restrack_kadd(struct rdma_restrack_entry *res);
void rdma_restrack_uadd(struct rdma_restrack_entry *res);

/**
 * rdma_restrack_del() - delete object from the reource tracking database
 * @res:  resource entry
 * @type: actual type of object to operate
 */
void rdma_restrack_del(struct rdma_restrack_entry *res);

/**
 * rdma_is_kernel_res() - check the owner of resource
 * @res:  resource entry
 */
static inline bool rdma_is_kernel_res(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);

/**
 * rdma_restrack_set_task() - set the task for this resource
 * @res:  resource entry
 * @caller: kernel name, the current task will be used if the caller is NULL.
 */
void rdma_restrack_set_task(struct rdma_restrack_entry *res,
			    const char *caller);

/*
 * 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);
struct rdma_restrack_entry *rdma_restrack_get_byid(struct ib_device *dev,
						   enum rdma_restrack_type type,
						   u32 id);
#endif /* _RDMA_RESTRACK_H_ */

Name	Size	Permission
ib.h	3449 bytes	0644
ib_addr.h	9123 bytes	0644
ib_cache.h	5438 bytes	0644
ib_cm.h	19779 bytes	0644
ib_fmr_pool.h	3440 bytes	0644
ib_hdrs.h	9145 bytes	0644
ib_mad.h	30183 bytes	0644
ib_marshall.h	2089 bytes	0644
ib_pack.h	9205 bytes	0644
ib_pma.h	5579 bytes	0644
ib_sa.h	21969 bytes	0644
ib_smi.h	5617 bytes	0644
ib_umem.h	4447 bytes	0644
ib_umem_odp.h	6405 bytes	0644
ib_verbs.h	140295 bytes	0644
iw_cm.h	8582 bytes	0644
iw_portmap.h	3523 bytes	0644
mr_pool.h	568 bytes	0644
opa_addr.h	4542 bytes	0644
opa_port_info.h	15139 bytes	0644
opa_smi.h	4385 bytes	0644
opa_vnic.h	4132 bytes	0644
peer_mem.h	6320 bytes	0644
rdma_cm.h	15617 bytes	0644
rdma_cm_ib.h	2108 bytes	0644
rdma_counter.h	1785 bytes	0644
rdma_netlink.h	4062 bytes	0644
rdma_vt.h	16644 bytes	0644
rdmavt_cq.h	3919 bytes	0644
rdmavt_mr.h	6129 bytes	0644
rdmavt_qp.h	30215 bytes	0644
restrack.h	3970 bytes	0644
rw.h	2264 bytes	0644
signature.h	2969 bytes	0644
tid_rdma_defs.h	2100 bytes	0644
uverbs_ioctl.h	31557 bytes	0644
uverbs_named_ioctl.h	6093 bytes	0644
uverbs_std_types.h	6421 bytes	0644
uverbs_types.h	6860 bytes	0644

File Content: restrack.h

File Content: `restrack.h`