summaryrefslogtreecommitdiff
path: root/drivers/target/iscsi/iscsi_target_device.c
diff options
context:
space:
mode:
authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /drivers/target/iscsi/iscsi_target_device.c
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
downloadFOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2
FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'drivers/target/iscsi/iscsi_target_device.c')
-rw-r--r--drivers/target/iscsi/iscsi_target_device.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/target/iscsi/iscsi_target_device.c b/drivers/target/iscsi/iscsi_target_device.c
new file mode 100644
index 00000000..bcc40985
--- /dev/null
+++ b/drivers/target/iscsi/iscsi_target_device.c
@@ -0,0 +1,67 @@
+/*******************************************************************************
+ * This file contains the iSCSI Virtual Device and Disk Transport
+ * agnostic related functions.
+ *
+ \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
+ *
+ * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
+ *
+ * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ ******************************************************************************/
+
+#include <scsi/scsi_device.h>
+#include <target/target_core_base.h>
+#include <target/target_core_fabric.h>
+
+#include "iscsi_target_core.h"
+#include "iscsi_target_device.h"
+#include "iscsi_target_tpg.h"
+#include "iscsi_target_util.h"
+
+void iscsit_determine_maxcmdsn(struct iscsi_session *sess)
+{
+ struct se_node_acl *se_nacl;
+
+ /*
+ * This is a discovery session, the single queue slot was already
+ * assigned in iscsi_login_zero_tsih(). Since only Logout and
+ * Text Opcodes are allowed during discovery we do not have to worry
+ * about the HBA's queue depth here.
+ */
+ if (sess->sess_ops->SessionType)
+ return;
+
+ se_nacl = sess->se_sess->se_node_acl;
+
+ /*
+ * This is a normal session, set the Session's CmdSN window to the
+ * struct se_node_acl->queue_depth. The value in struct se_node_acl->queue_depth
+ * has already been validated as a legal value in
+ * core_set_queue_depth_for_node().
+ */
+ sess->cmdsn_window = se_nacl->queue_depth;
+ sess->max_cmd_sn = (sess->max_cmd_sn + se_nacl->queue_depth) - 1;
+}
+
+void iscsit_increment_maxcmdsn(struct iscsi_cmd *cmd, struct iscsi_session *sess)
+{
+ if (cmd->immediate_cmd || cmd->maxcmdsn_inc)
+ return;
+
+ cmd->maxcmdsn_inc = 1;
+
+ mutex_lock(&sess->cmdsn_mutex);
+ sess->max_cmd_sn += 1;
+ pr_debug("Updated MaxCmdSN to 0x%08x\n", sess->max_cmd_sn);
+ mutex_unlock(&sess->cmdsn_mutex);
+}