Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * RDMA Network Block Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Copyright (c) 2014 - 2018 ProfitBricks GmbH. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Copyright (c) 2019 - 2020 1&1 IONOS SE. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #ifndef RNBD_SRV_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define RNBD_SRV_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/idr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/kref.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <rtrs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "rnbd-proto.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "rnbd-log.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct rnbd_srv_session {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	/* Entry inside global sess_list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	struct list_head        list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	struct rtrs_srv		*rtrs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	char			sessname[NAME_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	int			queue_depth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	struct bio_set		sess_bio_set;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	struct xarray		index_idr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	/* List of struct rnbd_srv_sess_dev */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	struct list_head        sess_dev_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	struct mutex		lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	u8			ver;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct rnbd_srv_dev {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	/* Entry inside global dev_list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	struct list_head                list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	struct kobject                  dev_kobj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	struct kobject                  *dev_sessions_kobj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	struct kref                     kref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	char				id[NAME_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	/* List of rnbd_srv_sess_dev structs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	struct list_head		sess_dev_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	struct mutex			lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	int				open_write_cnt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* Structure which binds N devices and N sessions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) struct rnbd_srv_sess_dev {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	/* Entry inside rnbd_srv_dev struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	struct list_head		dev_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 	/* Entry inside rnbd_srv_session struct */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	struct list_head		sess_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 	struct rnbd_dev			*rnbd_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	struct rnbd_srv_session		*sess;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	struct rnbd_srv_dev		*dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	struct kobject                  kobj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	u32                             device_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	fmode_t                         open_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	struct kref			kref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	struct completion               *destroy_comp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 	char				pathname[NAME_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 	enum rnbd_access_mode		access_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) /* rnbd-srv-sysfs.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) int rnbd_srv_create_dev_sysfs(struct rnbd_srv_dev *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 			      struct block_device *bdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 			      const char *dir_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) void rnbd_srv_destroy_dev_sysfs(struct rnbd_srv_dev *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int rnbd_srv_create_dev_session_sysfs(struct rnbd_srv_sess_dev *sess_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) void rnbd_srv_destroy_dev_session_sysfs(struct rnbd_srv_sess_dev *sess_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) int rnbd_srv_create_sysfs_files(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) void rnbd_srv_destroy_sysfs_files(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) void rnbd_destroy_sess_dev(struct rnbd_srv_sess_dev *sess_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #endif /* RNBD_SRV_H */