summaryrefslogtreecommitdiffstats
path: root/drivers/target/iscsi/iscsi_target_nodeattrib.c
blob: b3c699c4fe8ceb8b9dc2fe35a3eb0e94abfc1126 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
/*******************************************************************************
 * This file contains the main functions related to Initiator Node Attributes.
 *
 * \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 <target/target_core_base.h>

#include "iscsi_target_core.h"
#include "iscsi_target_device.h"
#include "iscsi_target_tpg.h"
#include "iscsi_target_util.h"
#include "iscsi_target_nodeattrib.h"

static inline char *iscsit_na_get_initiatorname(
	struct iscsi_node_acl *nacl)
{
	struct se_node_acl *se_nacl = &nacl->se_node_acl;

	return &se_nacl->initiatorname[0];
}

void iscsit_set_default_node_attribues(
	struct iscsi_node_acl *acl)
{
	struct iscsi_node_attrib *a = &acl->node_attrib;

	a->dataout_timeout = NA_DATAOUT_TIMEOUT;
	a->dataout_timeout_retries = NA_DATAOUT_TIMEOUT_RETRIES;
	a->nopin_timeout = NA_NOPIN_TIMEOUT;
	a->nopin_response_timeout = NA_NOPIN_RESPONSE_TIMEOUT;
	a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS;
	a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS;
	a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS;
	a->default_erl = NA_DEFAULT_ERL;
}

extern int iscsit_na_dataout_timeout(
	struct iscsi_node_acl *acl,
	u32 dataout_timeout)
{
	struct iscsi_node_attrib *a = &acl->node_attrib;

	if (dataout_timeout > NA_DATAOUT_TIMEOUT_MAX) {
		pr_err("Requested DataOut Timeout %u larger than"
			" maximum %u\n", dataout_timeout,
			NA_DATAOUT_TIMEOUT_MAX);
		return -EINVAL;
	} else if (dataout_timeout < NA_DATAOUT_TIMEOUT_MIX) {
		pr_err("Requested DataOut Timeout %u smaller than"
			" minimum %u\n", dataout_timeout,
			NA_DATAOUT_TIMEOUT_MIX);
		return -EINVAL;
	}

	a->dataout_timeout = dataout_timeout;
	pr_debug("Set DataOut Timeout to %u for Initiator Node"
		" %s\n", a->dataout_timeout, iscsit_na_get_initiatorname(acl));

	return 0;
}

extern int iscsit_na_dataout_timeout_retries(
	struct iscsi_node_acl *acl,
	u32 dataout_timeout_retries)
{
	struct iscsi_node_attrib *a = &acl->node_attrib;

	if (dataout_timeout_retries > NA_DATAOUT_TIMEOUT_RETRIES_MAX) {
		pr_err("Requested DataOut Timeout Retries %u larger"
			" than maximum %u", dataout_timeout_retries,
				NA_DATAOUT_TIMEOUT_RETRIES_MAX);
		return -EINVAL;
	} else if (dataout_timeout_retries < NA_DATAOUT_TIMEOUT_RETRIES_MIN) {
		pr_err("Requested DataOut Timeout Retries %u smaller"
			" than minimum %u", dataout_timeout_retries,
				NA_DATAOUT_TIMEOUT_RETRIES_MIN);
		return -EINVAL;
	}

	a->dataout_timeout_retries = dataout_timeout_retries;
	pr_debug("Set DataOut Timeout Retries to %u for"
		" Initiator Node %s\n", a->dataout_timeout_retries,
		iscsit_na_get_initiatorname(acl));

	return 0;
}

extern int iscsit_na_nopin_timeout(
	struct iscsi_node_acl *acl,
	u32 nopin_timeout)
{
	struct iscsi_node_attrib *a = &acl->node_attrib;
	struct iscsi_session *sess;
	struct iscsi_conn *conn;
	struct se_node_acl *se_nacl = &a->nacl->se_node_acl;
	struct se_session *se_sess;
	u32 orig_nopin_timeout = a->nopin_timeout;

	if (nopin_timeout > NA_NOPIN_TIMEOUT_MAX) {
		pr_err("Requested NopIn Timeout %u larger than maximum"
			" %u\n", nopin_timeout, NA_NOPIN_TIMEOUT_MAX);
		return -EINVAL;
	} else if ((nopin_timeout < NA_NOPIN_TIMEOUT_MIN) &&
		   (nopin_timeout != 0)) {
		pr_err("Requested NopIn Timeout %u smaller than"
			" minimum %u and not 0\n", nopin_timeout,
			NA_NOPIN_TIMEOUT_MIN);
		return -EINVAL;
	}

	a->nopin_timeout = nopin_timeout;
	pr_debug("Set NopIn Timeout to %u for Initiator"
		" Node %s\n", a->nopin_timeout,
		iscsit_na_get_initiatorname(acl));
	/*
	 * Reenable disabled nopin_timeout timer for all iSCSI connections.
	 */
	if (!orig_nopin_timeout) {
		spin_lock_bh(&se_nacl->nacl_sess_lock);
		se_sess = se_nacl->nacl_sess;
		if (se_sess) {
			sess = se_sess->fabric_sess_ptr;

			spin_lock(&sess->conn_lock);
			list_for_each_entry(conn, &sess->sess_conn_list,
					conn_list) {
				if (conn->conn_state !=
						TARG_CONN_STATE_LOGGED_IN)
					continue;

				spin_lock(&conn->nopin_timer_lock);
				__iscsit_start_nopin_timer(conn);
				spin_unlock(&conn->nopin_timer_lock);
			}
			spin_unlock(&sess->conn_lock);
		}
		spin_unlock_bh(&se_nacl->nacl_sess_lock);
	}

	return 0;
}

extern int iscsit_na_nopin_response_timeout(
	struct iscsi_node_acl *acl,
	u32 nopin_response_timeout)
{
	struct iscsi_node_attrib *a = &acl->node_attrib;

	if (nopin_response_timeout > NA_NOPIN_RESPONSE_TIMEOUT_MAX) {
		pr_err("Requested NopIn Response Timeout %u larger"
			" than maximum %u\n", nopin_response_timeout,
				NA_NOPIN_RESPONSE_TIMEOUT_MAX);
		return -EINVAL;
	} else if (nopin_response_timeout < NA_NOPIN_RESPONSE_TIMEOUT_MIN) {
		pr_err("Requested NopIn Response Timeout %u smaller"
			" than minimum %u\n", nopin_response_timeout,
				NA_NOPIN_RESPONSE_TIMEOUT_MIN);
		return -EINVAL;
	}

	a->nopin_response_timeout = nopin_response_timeout;
	pr_debug("Set NopIn Response Timeout to %u for"
		" Initiator Node %s\n", a->nopin_timeout,
		iscsit_na_get_initiatorname(acl));

	return 0;
}

extern int iscsit_na_random_datain_pdu_offsets(
	struct iscsi_node_acl *acl,
	u32 random_datain_pdu_offsets)
{
	struct iscsi_node_attrib *a = &acl->node_attrib;

	if (random_datain_pdu_offsets != 0 && random_datain_pdu_offsets != 1) {
		pr_err("Requested Random DataIN PDU Offsets: %u not"
			" 0 or 1\n", random_datain_pdu_offsets);
		return -EINVAL;
	}

	a->random_datain_pdu_offsets = random_datain_pdu_offsets;
	pr_debug("Set Random DataIN PDU Offsets to %u for"
		" Initiator Node %s\n", a->random_datain_pdu_offsets,
		iscsit_na_get_initiatorname(acl));

	return 0;
}

extern int iscsit_na_random_datain_seq_offsets(
	struct iscsi_node_acl *acl,
	u32 random_datain_seq_offsets)
{
	struct iscsi_node_attrib *a = &acl->node_attrib;

	if (random_datain_seq_offsets != 0 && random_datain_seq_offsets != 1) {
		pr_err("Requested Random DataIN Sequence Offsets: %u"
			" not 0 or 1\n", random_datain_seq_offsets);
		return -EINVAL;
	}

	a->random_datain_seq_offsets = random_datain_seq_offsets;
	pr_debug("Set Random DataIN Sequence Offsets to %u for"
		" Initiator Node %s\n", a->random_datain_seq_offsets,
		iscsit_na_get_initiatorname(acl));

	return 0;
}

extern int iscsit_na_random_r2t_offsets(
	struct iscsi_node_acl *acl,
	u32 random_r2t_offsets)
{
	struct iscsi_node_attrib *a = &acl->node_attrib;

	if (random_r2t_offsets != 0 && random_r2t_offsets != 1) {
		pr_err("Requested Random R2T Offsets: %u not"
			" 0 or 1\n", random_r2t_offsets);
		return -EINVAL;
	}

	a->random_r2t_offsets = random_r2t_offsets;
	pr_debug("Set Random R2T Offsets to %u for"
		" Initiator Node %s\n", a->random_r2t_offsets,
		iscsit_na_get_initiatorname(acl));

	return 0;
}

extern int iscsit_na_default_erl(
	struct iscsi_node_acl *acl,
	u32 default_erl)
{
	struct iscsi_node_attrib *a = &acl->node_attrib;

	if (default_erl != 0 && default_erl != 1 && default_erl != 2) {
		pr_err("Requested default ERL: %u not 0, 1, or 2\n",
				default_erl);
		return -EINVAL;
	}

	a->default_erl = default_erl;
	pr_debug("Set use ERL0 flag to %u for Initiator"
		" Node %s\n", a->default_erl,
		iscsit_na_get_initiatorname(acl));

	return 0;
}
OpenPOWER on IntegriCloud