summaryrefslogtreecommitdiffstats
path: root/drivers/block/rnbd/rnbd-srv.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/block/rnbd/rnbd-srv.h')
-rw-r--r--drivers/block/rnbd/rnbd-srv.h75
1 files changed, 75 insertions, 0 deletions
diff --git a/drivers/block/rnbd/rnbd-srv.h b/drivers/block/rnbd/rnbd-srv.h
new file mode 100644
index 0000000000..1027656ded
--- /dev/null
+++ b/drivers/block/rnbd/rnbd-srv.h
@@ -0,0 +1,75 @@
+/* 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 xarray index_idr;
+ 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 name[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;
+ struct block_device *bdev;
+ struct rnbd_srv_session *sess;
+ struct rnbd_srv_dev *dev;
+ struct kobject kobj;
+ u32 device_id;
+ bool keep_id;
+ bool readonly;
+ 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);
+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 */