From: Roman Pen <roman.penyaev@xxxxxxxxxxxxxxxx>
This header describes main structs and functions used by ibnbd-server
module, namely structs for managing sessions from different clients
and mapped (opened) devices.
Signed-off-by: Danil Kipnis <danil.kipnis@xxxxxxxxxxxxxxx>
Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxx>
---
drivers/block/ibnbd/ibnbd-srv.h | 94 +++++++++++++++++++++++++++++++++
1 file changed, 94 insertions(+)
create mode 100644 drivers/block/ibnbd/ibnbd-srv.h
diff --git a/drivers/block/ibnbd/ibnbd-srv.h b/drivers/block/ibnbd/ibnbd-srv.h
new file mode 100644
index 000000000000..6e46c3e97bf4
--- /dev/null
+++ b/drivers/block/ibnbd/ibnbd-srv.h
@@ -0,0 +1,94 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * InfiniBand Network Block Driver
+ *
+ * Copyright (c) 2014 - 2017 ProfitBricks GmbH. All rights reserved.
+ * Authors: Fabian Holler <mail@xxxxxxxxxx>
+ * Jack Wang <jinpu.wang@xxxxxxxxxxxxxxxx>
+ * Kleber Souza <kleber.souza@xxxxxxxxxxxxxxxx>
+ * Danil Kipnis <danil.kipnis@xxxxxxxxxxxxxxxx>
+ * Roman Penyaev <roman.penyaev@xxxxxxxxxxxxxxxx>
+ * Milind Dumbare <Milind.dumbare@xxxxxxxxx>
+ *
+ * Copyright (c) 2017 - 2018 ProfitBricks GmbH. All rights reserved.
+ * Authors: Danil Kipnis <danil.kipnis@xxxxxxxxxxxxxxxx>
+ * Roman Penyaev <roman.penyaev@xxxxxxxxxxxxxxxx>
+ *
+ * Copyright (c) 2018 - 2019 1&1 IONOS Cloud GmbH. All rights reserved.
+ * Authors: Roman Penyaev <roman.penyaev@xxxxxxxxxxxxxxxx>
+ * Jack Wang <jinpu.wang@xxxxxxxxxxxxxxx>
+ * Danil Kipnis <danil.kipnis@xxxxxxxxxxxxxxx>
+ */
+
+#ifndef IBNBD_SRV_H
+#define IBNBD_SRV_H
+
+#include <linux/types.h>
+#include <linux/idr.h>
+#include <linux/kref.h>
+
+#include "ibtrs.h"
+#include "ibnbd-proto.h"
+#include "ibnbd-log.h"
+
+struct ibnbd_srv_session {
+ /* Entry inside global sess_list */
+ struct list_head list;
+ struct ibtrs_srv *ibtrs;
+ char sessname[NAME_MAX];
+ int queue_depth;
+ struct bio_set sess_bio_set;
+
+ rwlock_t index_lock ____cacheline_aligned;
+ struct idr index_idr;
+ /* List of struct ibnbd_srv_sess_dev */
+ struct list_head sess_dev_list;
+ struct mutex lock;
+ u8 ver;
+};
+
+struct ibnbd_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 ibnbd_srv_sess_dev structs */
+ struct list_head sess_dev_list;
+ struct mutex lock;
+ int open_write_cnt;
+ enum ibnbd_io_mode mode;
+};
+
+/* Structure which binds N devices and N sessions */
+struct ibnbd_srv_sess_dev {
+ /* Entry inside ibnbd_srv_dev struct */
+ struct list_head dev_list;
+ /* Entry inside ibnbd_srv_session struct */
+ struct list_head sess_list;
+ struct ibnbd_dev *ibnbd_dev;
+ struct ibnbd_srv_session *sess;
+ struct ibnbd_srv_dev *dev;
+ struct kobject kobj;
+ struct completion *sysfs_release_compl;
+ u32 device_id;
+ fmode_t open_flags;
+ struct kref kref;
+ struct completion *destroy_comp;
+ char pathname[NAME_MAX];
+ enum ibnbd_access_mode access_mode;
+};
+
+/* ibnbd-srv-sysfs.c */
+
+int ibnbd_srv_create_dev_sysfs(struct ibnbd_srv_dev *dev,
+ struct block_device *bdev,
+ const char *dir_name);
+void ibnbd_srv_destroy_dev_sysfs(struct ibnbd_srv_dev *dev);
+int ibnbd_srv_create_dev_session_sysfs(struct ibnbd_srv_sess_dev *sess_dev);
+void ibnbd_srv_destroy_dev_session_sysfs(struct ibnbd_srv_sess_dev *sess_dev);
+int ibnbd_srv_create_sysfs_files(void);
+void ibnbd_srv_destroy_sysfs_files(void);
+
+#endif /* IBNBD_SRV_H */
--
2.17.1
