/* 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 *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 */