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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* RDMA Network Block Driver
*
* Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved.
* Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
* Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved.
*/
#ifndef RNBD_SRV_H
#define RNBD_SRV_H
#include <linux/types.h>
#include <linux/idr.h>
#include <linux/kref.h>
#include <rtrs.h>
#include "rnbd-proto.h"
#include "rnbd-log.h"
struct rnbd_srv_session {
/* Entry inside global sess_list */
struct list_head list;
struct rtrs_srv_sess *rtrs;
char sessname[NAME_MAX];
int queue_depth;
struct bio_set sess_bio_set;
struct xarray index_idr;
/* List of struct rnbd_srv_sess_dev */
struct list_head sess_dev_list;
struct mutex lock;
u8 ver;
};
struct rnbd_srv_dev {
/* Entry inside global dev_list */
struct list_head list;
struct kobject dev_kobj;
struct kobject *dev_sessions_kobj;
struct kref kref;
char id[NAME_MAX];
/* List of rnbd_srv_sess_dev structs */
struct list_head sess_dev_list;
struct mutex lock;
int open_write_cnt;
};
/* Structure which binds N devices and N sessions */
struct rnbd_srv_sess_dev {
/* Entry inside rnbd_srv_dev struct */
struct list_head dev_list;
/* Entry inside rnbd_srv_session struct */
struct list_head sess_list;
struct rnbd_dev *rnbd_dev;
struct rnbd_srv_session *sess;
struct rnbd_srv_dev *dev;
struct kobject kobj;
u32 device_id;
bool keep_id;
fmode_t open_flags;
struct kref kref;
struct completion *destroy_comp;
char pathname[NAME_MAX];
enum rnbd_access_mode access_mode;
};
void rnbd_srv_sess_dev_force_close(struct rnbd_srv_sess_dev *sess_dev,
struct kobj_attribute *attr);
/* rnbd-srv-sysfs.c */
int rnbd_srv_create_dev_sysfs(struct rnbd_srv_dev *dev,
struct block_device *bdev,
const char *dir_name);
void rnbd_srv_destroy_dev_sysfs(struct rnbd_srv_dev *dev);
int rnbd_srv_create_dev_session_sysfs(struct rnbd_srv_sess_dev *sess_dev);
void rnbd_srv_destroy_dev_session_sysfs(struct rnbd_srv_sess_dev *sess_dev);
int rnbd_srv_create_sysfs_files(void);
void rnbd_srv_destroy_sysfs_files(void);
void rnbd_destroy_sess_dev(struct rnbd_srv_sess_dev *sess_dev, bool keep_id);
#endif /* RNBD_SRV_H */
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