Release 4.11 drivers/target/iscsi/iscsi_target_device.c

/*******************************************************************************
 * This file contains the iSCSI Virtual Device and Disk Transport
 * agnostic related functions.
 *
 * (c) Copyright 2007-2013 Datera, Inc.
 *
 * 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 <target/target_core_base.h>
#include <target/target_core_fabric.h>

#include <target/iscsi/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;
	atomic_add(se_nacl->queue_depth - 1, &sess->max_cmd_sn);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Nicholas Bellinger
47
83.93%
1
33.33%
Roland Dreier
9
16.07%
2
66.67%
Total
56
100.00%
3
100.00%



void iscsit_increment_maxcmdsn(struct iscsi_cmd *cmd, struct iscsi_session *sess)
{
	u32 max_cmd_sn;

	if (cmd->immediate_cmd || cmd->maxcmdsn_inc)
		return;

	cmd->maxcmdsn_inc = 1;

	max_cmd_sn = atomic_inc_return(&sess->max_cmd_sn);
	pr_debug("Updated MaxCmdSN to 0x%08x\n", max_cmd_sn);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Nicholas Bellinger
38
73.08%
1
33.33%
Roland Dreier
14
26.92%
2
66.67%
Total
52
100.00%
3
100.00%


EXPORT_SYMBOL(iscsit_increment_maxcmdsn);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Nicholas Bellinger
107
81.06%
3
42.86%
Roland Dreier
23
17.42%
2
28.57%
Sagi Grimberg
1
0.76%
1
14.29%
Christoph Hellwig
1
0.76%
1
14.29%
Total
132
100.00%
7
100.00%
Directory: drivers/target/iscsi

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.