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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*******************************************************************************
3 * This file contains the main functions related to Initiator Node Attributes.
4 *
5 * (c) Copyright 2007-2013 Datera, Inc.
6 *
7 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
8 *
9 ******************************************************************************/
10
11#include <target/target_core_base.h>
12
13#include <target/iscsi/iscsi_target_core.h>
14#include "iscsi_target_device.h"
15#include "iscsi_target_tpg.h"
16#include "iscsi_target_util.h"
17#include "iscsi_target_nodeattrib.h"
18
19static inline char *iscsit_na_get_initiatorname(
20 struct iscsi_node_acl *nacl)
21{
22 struct se_node_acl *se_nacl = &nacl->se_node_acl;
23
24 return &se_nacl->initiatorname[0];
25}
26
27void iscsit_set_default_node_attribues(
28 struct iscsi_node_acl *acl,
29 struct iscsi_portal_group *tpg)
30{
31 struct iscsi_node_attrib *a = &acl->node_attrib;
32
33 a->dataout_timeout = NA_DATAOUT_TIMEOUT;
34 a->dataout_timeout_retries = NA_DATAOUT_TIMEOUT_RETRIES;
35 a->nopin_timeout = NA_NOPIN_TIMEOUT;
36 a->nopin_response_timeout = NA_NOPIN_RESPONSE_TIMEOUT;
37 a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS;
38 a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS;
39 a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS;
40 a->default_erl = tpg->tpg_attrib.default_erl;
41}
42
43int iscsit_na_dataout_timeout(
44 struct iscsi_node_acl *acl,
45 u32 dataout_timeout)
46{
47 struct iscsi_node_attrib *a = &acl->node_attrib;
48
49 if (dataout_timeout > NA_DATAOUT_TIMEOUT_MAX) {
50 pr_err("Requested DataOut Timeout %u larger than"
51 " maximum %u\n", dataout_timeout,
52 NA_DATAOUT_TIMEOUT_MAX);
53 return -EINVAL;
54 } else if (dataout_timeout < NA_DATAOUT_TIMEOUT_MIX) {
55 pr_err("Requested DataOut Timeout %u smaller than"
56 " minimum %u\n", dataout_timeout,
57 NA_DATAOUT_TIMEOUT_MIX);
58 return -EINVAL;
59 }
60
61 a->dataout_timeout = dataout_timeout;
62 pr_debug("Set DataOut Timeout to %u for Initiator Node"
63 " %s\n", a->dataout_timeout, iscsit_na_get_initiatorname(acl));
64
65 return 0;
66}
67
68int iscsit_na_dataout_timeout_retries(
69 struct iscsi_node_acl *acl,
70 u32 dataout_timeout_retries)
71{
72 struct iscsi_node_attrib *a = &acl->node_attrib;
73
74 if (dataout_timeout_retries > NA_DATAOUT_TIMEOUT_RETRIES_MAX) {
75 pr_err("Requested DataOut Timeout Retries %u larger"
76 " than maximum %u", dataout_timeout_retries,
77 NA_DATAOUT_TIMEOUT_RETRIES_MAX);
78 return -EINVAL;
79 } else if (dataout_timeout_retries < NA_DATAOUT_TIMEOUT_RETRIES_MIN) {
80 pr_err("Requested DataOut Timeout Retries %u smaller"
81 " than minimum %u", dataout_timeout_retries,
82 NA_DATAOUT_TIMEOUT_RETRIES_MIN);
83 return -EINVAL;
84 }
85
86 a->dataout_timeout_retries = dataout_timeout_retries;
87 pr_debug("Set DataOut Timeout Retries to %u for"
88 " Initiator Node %s\n", a->dataout_timeout_retries,
89 iscsit_na_get_initiatorname(acl));
90
91 return 0;
92}
93
94int iscsit_na_nopin_timeout(
95 struct iscsi_node_acl *acl,
96 u32 nopin_timeout)
97{
98 struct iscsi_node_attrib *a = &acl->node_attrib;
99 struct iscsi_session *sess;
100 struct iscsi_conn *conn;
101 struct se_node_acl *se_nacl = &a->nacl->se_node_acl;
102 struct se_session *se_sess;
103 u32 orig_nopin_timeout = a->nopin_timeout;
104
105 if (nopin_timeout > NA_NOPIN_TIMEOUT_MAX) {
106 pr_err("Requested NopIn Timeout %u larger than maximum"
107 " %u\n", nopin_timeout, NA_NOPIN_TIMEOUT_MAX);
108 return -EINVAL;
109 } else if ((nopin_timeout < NA_NOPIN_TIMEOUT_MIN) &&
110 (nopin_timeout != 0)) {
111 pr_err("Requested NopIn Timeout %u smaller than"
112 " minimum %u and not 0\n", nopin_timeout,
113 NA_NOPIN_TIMEOUT_MIN);
114 return -EINVAL;
115 }
116
117 a->nopin_timeout = nopin_timeout;
118 pr_debug("Set NopIn Timeout to %u for Initiator"
119 " Node %s\n", a->nopin_timeout,
120 iscsit_na_get_initiatorname(acl));
121 /*
122 * Reenable disabled nopin_timeout timer for all iSCSI connections.
123 */
124 if (!orig_nopin_timeout) {
125 spin_lock_bh(&se_nacl->nacl_sess_lock);
126 se_sess = se_nacl->nacl_sess;
127 if (se_sess) {
128 sess = se_sess->fabric_sess_ptr;
129
130 spin_lock(&sess->conn_lock);
131 list_for_each_entry(conn, &sess->sess_conn_list,
132 conn_list) {
133 if (conn->conn_state !=
134 TARG_CONN_STATE_LOGGED_IN)
135 continue;
136
137 spin_lock(&conn->nopin_timer_lock);
138 __iscsit_start_nopin_timer(conn);
139 spin_unlock(&conn->nopin_timer_lock);
140 }
141 spin_unlock(&sess->conn_lock);
142 }
143 spin_unlock_bh(&se_nacl->nacl_sess_lock);
144 }
145
146 return 0;
147}
148
149int iscsit_na_nopin_response_timeout(
150 struct iscsi_node_acl *acl,
151 u32 nopin_response_timeout)
152{
153 struct iscsi_node_attrib *a = &acl->node_attrib;
154
155 if (nopin_response_timeout > NA_NOPIN_RESPONSE_TIMEOUT_MAX) {
156 pr_err("Requested NopIn Response Timeout %u larger"
157 " than maximum %u\n", nopin_response_timeout,
158 NA_NOPIN_RESPONSE_TIMEOUT_MAX);
159 return -EINVAL;
160 } else if (nopin_response_timeout < NA_NOPIN_RESPONSE_TIMEOUT_MIN) {
161 pr_err("Requested NopIn Response Timeout %u smaller"
162 " than minimum %u\n", nopin_response_timeout,
163 NA_NOPIN_RESPONSE_TIMEOUT_MIN);
164 return -EINVAL;
165 }
166
167 a->nopin_response_timeout = nopin_response_timeout;
168 pr_debug("Set NopIn Response Timeout to %u for"
169 " Initiator Node %s\n", a->nopin_timeout,
170 iscsit_na_get_initiatorname(acl));
171
172 return 0;
173}
174
175int iscsit_na_random_datain_pdu_offsets(
176 struct iscsi_node_acl *acl,
177 u32 random_datain_pdu_offsets)
178{
179 struct iscsi_node_attrib *a = &acl->node_attrib;
180
181 if (random_datain_pdu_offsets != 0 && random_datain_pdu_offsets != 1) {
182 pr_err("Requested Random DataIN PDU Offsets: %u not"
183 " 0 or 1\n", random_datain_pdu_offsets);
184 return -EINVAL;
185 }
186
187 a->random_datain_pdu_offsets = random_datain_pdu_offsets;
188 pr_debug("Set Random DataIN PDU Offsets to %u for"
189 " Initiator Node %s\n", a->random_datain_pdu_offsets,
190 iscsit_na_get_initiatorname(acl));
191
192 return 0;
193}
194
195int iscsit_na_random_datain_seq_offsets(
196 struct iscsi_node_acl *acl,
197 u32 random_datain_seq_offsets)
198{
199 struct iscsi_node_attrib *a = &acl->node_attrib;
200
201 if (random_datain_seq_offsets != 0 && random_datain_seq_offsets != 1) {
202 pr_err("Requested Random DataIN Sequence Offsets: %u"
203 " not 0 or 1\n", random_datain_seq_offsets);
204 return -EINVAL;
205 }
206
207 a->random_datain_seq_offsets = random_datain_seq_offsets;
208 pr_debug("Set Random DataIN Sequence Offsets to %u for"
209 " Initiator Node %s\n", a->random_datain_seq_offsets,
210 iscsit_na_get_initiatorname(acl));
211
212 return 0;
213}
214
215int iscsit_na_random_r2t_offsets(
216 struct iscsi_node_acl *acl,
217 u32 random_r2t_offsets)
218{
219 struct iscsi_node_attrib *a = &acl->node_attrib;
220
221 if (random_r2t_offsets != 0 && random_r2t_offsets != 1) {
222 pr_err("Requested Random R2T Offsets: %u not"
223 " 0 or 1\n", random_r2t_offsets);
224 return -EINVAL;
225 }
226
227 a->random_r2t_offsets = random_r2t_offsets;
228 pr_debug("Set Random R2T Offsets to %u for"
229 " Initiator Node %s\n", a->random_r2t_offsets,
230 iscsit_na_get_initiatorname(acl));
231
232 return 0;
233}
234
235int iscsit_na_default_erl(
236 struct iscsi_node_acl *acl,
237 u32 default_erl)
238{
239 struct iscsi_node_attrib *a = &acl->node_attrib;
240
241 if (default_erl != 0 && default_erl != 1 && default_erl != 2) {
242 pr_err("Requested default ERL: %u not 0, 1, or 2\n",
243 default_erl);
244 return -EINVAL;
245 }
246
247 a->default_erl = default_erl;
248 pr_debug("Set use ERL0 flag to %u for Initiator"
249 " Node %s\n", a->default_erl,
250 iscsit_na_get_initiatorname(acl));
251
252 return 0;
253}
1/*******************************************************************************
2 * This file contains the main functions related to Initiator Node Attributes.
3 *
4 * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
5 *
6 * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
7 *
8 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 ******************************************************************************/
20
21#include <target/target_core_base.h>
22
23#include "iscsi_target_core.h"
24#include "iscsi_target_device.h"
25#include "iscsi_target_tpg.h"
26#include "iscsi_target_util.h"
27#include "iscsi_target_nodeattrib.h"
28
29static inline char *iscsit_na_get_initiatorname(
30 struct iscsi_node_acl *nacl)
31{
32 struct se_node_acl *se_nacl = &nacl->se_node_acl;
33
34 return &se_nacl->initiatorname[0];
35}
36
37void iscsit_set_default_node_attribues(
38 struct iscsi_node_acl *acl)
39{
40 struct iscsi_node_attrib *a = &acl->node_attrib;
41
42 a->dataout_timeout = NA_DATAOUT_TIMEOUT;
43 a->dataout_timeout_retries = NA_DATAOUT_TIMEOUT_RETRIES;
44 a->nopin_timeout = NA_NOPIN_TIMEOUT;
45 a->nopin_response_timeout = NA_NOPIN_RESPONSE_TIMEOUT;
46 a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS;
47 a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS;
48 a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS;
49 a->default_erl = NA_DEFAULT_ERL;
50}
51
52int iscsit_na_dataout_timeout(
53 struct iscsi_node_acl *acl,
54 u32 dataout_timeout)
55{
56 struct iscsi_node_attrib *a = &acl->node_attrib;
57
58 if (dataout_timeout > NA_DATAOUT_TIMEOUT_MAX) {
59 pr_err("Requested DataOut Timeout %u larger than"
60 " maximum %u\n", dataout_timeout,
61 NA_DATAOUT_TIMEOUT_MAX);
62 return -EINVAL;
63 } else if (dataout_timeout < NA_DATAOUT_TIMEOUT_MIX) {
64 pr_err("Requested DataOut Timeout %u smaller than"
65 " minimum %u\n", dataout_timeout,
66 NA_DATAOUT_TIMEOUT_MIX);
67 return -EINVAL;
68 }
69
70 a->dataout_timeout = dataout_timeout;
71 pr_debug("Set DataOut Timeout to %u for Initiator Node"
72 " %s\n", a->dataout_timeout, iscsit_na_get_initiatorname(acl));
73
74 return 0;
75}
76
77int iscsit_na_dataout_timeout_retries(
78 struct iscsi_node_acl *acl,
79 u32 dataout_timeout_retries)
80{
81 struct iscsi_node_attrib *a = &acl->node_attrib;
82
83 if (dataout_timeout_retries > NA_DATAOUT_TIMEOUT_RETRIES_MAX) {
84 pr_err("Requested DataOut Timeout Retries %u larger"
85 " than maximum %u", dataout_timeout_retries,
86 NA_DATAOUT_TIMEOUT_RETRIES_MAX);
87 return -EINVAL;
88 } else if (dataout_timeout_retries < NA_DATAOUT_TIMEOUT_RETRIES_MIN) {
89 pr_err("Requested DataOut Timeout Retries %u smaller"
90 " than minimum %u", dataout_timeout_retries,
91 NA_DATAOUT_TIMEOUT_RETRIES_MIN);
92 return -EINVAL;
93 }
94
95 a->dataout_timeout_retries = dataout_timeout_retries;
96 pr_debug("Set DataOut Timeout Retries to %u for"
97 " Initiator Node %s\n", a->dataout_timeout_retries,
98 iscsit_na_get_initiatorname(acl));
99
100 return 0;
101}
102
103int iscsit_na_nopin_timeout(
104 struct iscsi_node_acl *acl,
105 u32 nopin_timeout)
106{
107 struct iscsi_node_attrib *a = &acl->node_attrib;
108 struct iscsi_session *sess;
109 struct iscsi_conn *conn;
110 struct se_node_acl *se_nacl = &a->nacl->se_node_acl;
111 struct se_session *se_sess;
112 u32 orig_nopin_timeout = a->nopin_timeout;
113
114 if (nopin_timeout > NA_NOPIN_TIMEOUT_MAX) {
115 pr_err("Requested NopIn Timeout %u larger than maximum"
116 " %u\n", nopin_timeout, NA_NOPIN_TIMEOUT_MAX);
117 return -EINVAL;
118 } else if ((nopin_timeout < NA_NOPIN_TIMEOUT_MIN) &&
119 (nopin_timeout != 0)) {
120 pr_err("Requested NopIn Timeout %u smaller than"
121 " minimum %u and not 0\n", nopin_timeout,
122 NA_NOPIN_TIMEOUT_MIN);
123 return -EINVAL;
124 }
125
126 a->nopin_timeout = nopin_timeout;
127 pr_debug("Set NopIn Timeout to %u for Initiator"
128 " Node %s\n", a->nopin_timeout,
129 iscsit_na_get_initiatorname(acl));
130 /*
131 * Reenable disabled nopin_timeout timer for all iSCSI connections.
132 */
133 if (!orig_nopin_timeout) {
134 spin_lock_bh(&se_nacl->nacl_sess_lock);
135 se_sess = se_nacl->nacl_sess;
136 if (se_sess) {
137 sess = se_sess->fabric_sess_ptr;
138
139 spin_lock(&sess->conn_lock);
140 list_for_each_entry(conn, &sess->sess_conn_list,
141 conn_list) {
142 if (conn->conn_state !=
143 TARG_CONN_STATE_LOGGED_IN)
144 continue;
145
146 spin_lock(&conn->nopin_timer_lock);
147 __iscsit_start_nopin_timer(conn);
148 spin_unlock(&conn->nopin_timer_lock);
149 }
150 spin_unlock(&sess->conn_lock);
151 }
152 spin_unlock_bh(&se_nacl->nacl_sess_lock);
153 }
154
155 return 0;
156}
157
158int iscsit_na_nopin_response_timeout(
159 struct iscsi_node_acl *acl,
160 u32 nopin_response_timeout)
161{
162 struct iscsi_node_attrib *a = &acl->node_attrib;
163
164 if (nopin_response_timeout > NA_NOPIN_RESPONSE_TIMEOUT_MAX) {
165 pr_err("Requested NopIn Response Timeout %u larger"
166 " than maximum %u\n", nopin_response_timeout,
167 NA_NOPIN_RESPONSE_TIMEOUT_MAX);
168 return -EINVAL;
169 } else if (nopin_response_timeout < NA_NOPIN_RESPONSE_TIMEOUT_MIN) {
170 pr_err("Requested NopIn Response Timeout %u smaller"
171 " than minimum %u\n", nopin_response_timeout,
172 NA_NOPIN_RESPONSE_TIMEOUT_MIN);
173 return -EINVAL;
174 }
175
176 a->nopin_response_timeout = nopin_response_timeout;
177 pr_debug("Set NopIn Response Timeout to %u for"
178 " Initiator Node %s\n", a->nopin_timeout,
179 iscsit_na_get_initiatorname(acl));
180
181 return 0;
182}
183
184int iscsit_na_random_datain_pdu_offsets(
185 struct iscsi_node_acl *acl,
186 u32 random_datain_pdu_offsets)
187{
188 struct iscsi_node_attrib *a = &acl->node_attrib;
189
190 if (random_datain_pdu_offsets != 0 && random_datain_pdu_offsets != 1) {
191 pr_err("Requested Random DataIN PDU Offsets: %u not"
192 " 0 or 1\n", random_datain_pdu_offsets);
193 return -EINVAL;
194 }
195
196 a->random_datain_pdu_offsets = random_datain_pdu_offsets;
197 pr_debug("Set Random DataIN PDU Offsets to %u for"
198 " Initiator Node %s\n", a->random_datain_pdu_offsets,
199 iscsit_na_get_initiatorname(acl));
200
201 return 0;
202}
203
204int iscsit_na_random_datain_seq_offsets(
205 struct iscsi_node_acl *acl,
206 u32 random_datain_seq_offsets)
207{
208 struct iscsi_node_attrib *a = &acl->node_attrib;
209
210 if (random_datain_seq_offsets != 0 && random_datain_seq_offsets != 1) {
211 pr_err("Requested Random DataIN Sequence Offsets: %u"
212 " not 0 or 1\n", random_datain_seq_offsets);
213 return -EINVAL;
214 }
215
216 a->random_datain_seq_offsets = random_datain_seq_offsets;
217 pr_debug("Set Random DataIN Sequence Offsets to %u for"
218 " Initiator Node %s\n", a->random_datain_seq_offsets,
219 iscsit_na_get_initiatorname(acl));
220
221 return 0;
222}
223
224int iscsit_na_random_r2t_offsets(
225 struct iscsi_node_acl *acl,
226 u32 random_r2t_offsets)
227{
228 struct iscsi_node_attrib *a = &acl->node_attrib;
229
230 if (random_r2t_offsets != 0 && random_r2t_offsets != 1) {
231 pr_err("Requested Random R2T Offsets: %u not"
232 " 0 or 1\n", random_r2t_offsets);
233 return -EINVAL;
234 }
235
236 a->random_r2t_offsets = random_r2t_offsets;
237 pr_debug("Set Random R2T Offsets to %u for"
238 " Initiator Node %s\n", a->random_r2t_offsets,
239 iscsit_na_get_initiatorname(acl));
240
241 return 0;
242}
243
244int iscsit_na_default_erl(
245 struct iscsi_node_acl *acl,
246 u32 default_erl)
247{
248 struct iscsi_node_attrib *a = &acl->node_attrib;
249
250 if (default_erl != 0 && default_erl != 1 && default_erl != 2) {
251 pr_err("Requested default ERL: %u not 0, 1, or 2\n",
252 default_erl);
253 return -EINVAL;
254 }
255
256 a->default_erl = default_erl;
257 pr_debug("Set use ERL0 flag to %u for Initiator"
258 " Node %s\n", a->default_erl,
259 iscsit_na_get_initiatorname(acl));
260
261 return 0;
262}