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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#include <target/target_core_transport.h>
23
24#include "iscsi_target_core.h"
25#include "iscsi_target_device.h"
26#include "iscsi_target_tpg.h"
27#include "iscsi_target_util.h"
28#include "iscsi_target_nodeattrib.h"
29
30static inline char *iscsit_na_get_initiatorname(
31 struct iscsi_node_acl *nacl)
32{
33 struct se_node_acl *se_nacl = &nacl->se_node_acl;
34
35 return &se_nacl->initiatorname[0];
36}
37
38void iscsit_set_default_node_attribues(
39 struct iscsi_node_acl *acl)
40{
41 struct iscsi_node_attrib *a = &acl->node_attrib;
42
43 a->dataout_timeout = NA_DATAOUT_TIMEOUT;
44 a->dataout_timeout_retries = NA_DATAOUT_TIMEOUT_RETRIES;
45 a->nopin_timeout = NA_NOPIN_TIMEOUT;
46 a->nopin_response_timeout = NA_NOPIN_RESPONSE_TIMEOUT;
47 a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS;
48 a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS;
49 a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS;
50 a->default_erl = NA_DEFAULT_ERL;
51}
52
53extern int iscsit_na_dataout_timeout(
54 struct iscsi_node_acl *acl,
55 u32 dataout_timeout)
56{
57 struct iscsi_node_attrib *a = &acl->node_attrib;
58
59 if (dataout_timeout > NA_DATAOUT_TIMEOUT_MAX) {
60 pr_err("Requested DataOut Timeout %u larger than"
61 " maximum %u\n", dataout_timeout,
62 NA_DATAOUT_TIMEOUT_MAX);
63 return -EINVAL;
64 } else if (dataout_timeout < NA_DATAOUT_TIMEOUT_MIX) {
65 pr_err("Requested DataOut Timeout %u smaller than"
66 " minimum %u\n", dataout_timeout,
67 NA_DATAOUT_TIMEOUT_MIX);
68 return -EINVAL;
69 }
70
71 a->dataout_timeout = dataout_timeout;
72 pr_debug("Set DataOut Timeout to %u for Initiator Node"
73 " %s\n", a->dataout_timeout, iscsit_na_get_initiatorname(acl));
74
75 return 0;
76}
77
78extern int iscsit_na_dataout_timeout_retries(
79 struct iscsi_node_acl *acl,
80 u32 dataout_timeout_retries)
81{
82 struct iscsi_node_attrib *a = &acl->node_attrib;
83
84 if (dataout_timeout_retries > NA_DATAOUT_TIMEOUT_RETRIES_MAX) {
85 pr_err("Requested DataOut Timeout Retries %u larger"
86 " than maximum %u", dataout_timeout_retries,
87 NA_DATAOUT_TIMEOUT_RETRIES_MAX);
88 return -EINVAL;
89 } else if (dataout_timeout_retries < NA_DATAOUT_TIMEOUT_RETRIES_MIN) {
90 pr_err("Requested DataOut Timeout Retries %u smaller"
91 " than minimum %u", dataout_timeout_retries,
92 NA_DATAOUT_TIMEOUT_RETRIES_MIN);
93 return -EINVAL;
94 }
95
96 a->dataout_timeout_retries = dataout_timeout_retries;
97 pr_debug("Set DataOut Timeout Retries to %u for"
98 " Initiator Node %s\n", a->dataout_timeout_retries,
99 iscsit_na_get_initiatorname(acl));
100
101 return 0;
102}
103
104extern int iscsit_na_nopin_timeout(
105 struct iscsi_node_acl *acl,
106 u32 nopin_timeout)
107{
108 struct iscsi_node_attrib *a = &acl->node_attrib;
109 struct iscsi_session *sess;
110 struct iscsi_conn *conn;
111 struct se_node_acl *se_nacl = &a->nacl->se_node_acl;
112 struct se_session *se_sess;
113 u32 orig_nopin_timeout = a->nopin_timeout;
114
115 if (nopin_timeout > NA_NOPIN_TIMEOUT_MAX) {
116 pr_err("Requested NopIn Timeout %u larger than maximum"
117 " %u\n", nopin_timeout, NA_NOPIN_TIMEOUT_MAX);
118 return -EINVAL;
119 } else if ((nopin_timeout < NA_NOPIN_TIMEOUT_MIN) &&
120 (nopin_timeout != 0)) {
121 pr_err("Requested NopIn Timeout %u smaller than"
122 " minimum %u and not 0\n", nopin_timeout,
123 NA_NOPIN_TIMEOUT_MIN);
124 return -EINVAL;
125 }
126
127 a->nopin_timeout = nopin_timeout;
128 pr_debug("Set NopIn Timeout to %u for Initiator"
129 " Node %s\n", a->nopin_timeout,
130 iscsit_na_get_initiatorname(acl));
131 /*
132 * Reenable disabled nopin_timeout timer for all iSCSI connections.
133 */
134 if (!orig_nopin_timeout) {
135 spin_lock_bh(&se_nacl->nacl_sess_lock);
136 se_sess = se_nacl->nacl_sess;
137 if (se_sess) {
138 sess = (struct iscsi_session *)se_sess->fabric_sess_ptr;
139
140 spin_lock(&sess->conn_lock);
141 list_for_each_entry(conn, &sess->sess_conn_list,
142 conn_list) {
143 if (conn->conn_state !=
144 TARG_CONN_STATE_LOGGED_IN)
145 continue;
146
147 spin_lock(&conn->nopin_timer_lock);
148 __iscsit_start_nopin_timer(conn);
149 spin_unlock(&conn->nopin_timer_lock);
150 }
151 spin_unlock(&sess->conn_lock);
152 }
153 spin_unlock_bh(&se_nacl->nacl_sess_lock);
154 }
155
156 return 0;
157}
158
159extern int iscsit_na_nopin_response_timeout(
160 struct iscsi_node_acl *acl,
161 u32 nopin_response_timeout)
162{
163 struct iscsi_node_attrib *a = &acl->node_attrib;
164
165 if (nopin_response_timeout > NA_NOPIN_RESPONSE_TIMEOUT_MAX) {
166 pr_err("Requested NopIn Response Timeout %u larger"
167 " than maximum %u\n", nopin_response_timeout,
168 NA_NOPIN_RESPONSE_TIMEOUT_MAX);
169 return -EINVAL;
170 } else if (nopin_response_timeout < NA_NOPIN_RESPONSE_TIMEOUT_MIN) {
171 pr_err("Requested NopIn Response Timeout %u smaller"
172 " than minimum %u\n", nopin_response_timeout,
173 NA_NOPIN_RESPONSE_TIMEOUT_MIN);
174 return -EINVAL;
175 }
176
177 a->nopin_response_timeout = nopin_response_timeout;
178 pr_debug("Set NopIn Response Timeout to %u for"
179 " Initiator Node %s\n", a->nopin_timeout,
180 iscsit_na_get_initiatorname(acl));
181
182 return 0;
183}
184
185extern int iscsit_na_random_datain_pdu_offsets(
186 struct iscsi_node_acl *acl,
187 u32 random_datain_pdu_offsets)
188{
189 struct iscsi_node_attrib *a = &acl->node_attrib;
190
191 if (random_datain_pdu_offsets != 0 && random_datain_pdu_offsets != 1) {
192 pr_err("Requested Random DataIN PDU Offsets: %u not"
193 " 0 or 1\n", random_datain_pdu_offsets);
194 return -EINVAL;
195 }
196
197 a->random_datain_pdu_offsets = random_datain_pdu_offsets;
198 pr_debug("Set Random DataIN PDU Offsets to %u for"
199 " Initiator Node %s\n", a->random_datain_pdu_offsets,
200 iscsit_na_get_initiatorname(acl));
201
202 return 0;
203}
204
205extern int iscsit_na_random_datain_seq_offsets(
206 struct iscsi_node_acl *acl,
207 u32 random_datain_seq_offsets)
208{
209 struct iscsi_node_attrib *a = &acl->node_attrib;
210
211 if (random_datain_seq_offsets != 0 && random_datain_seq_offsets != 1) {
212 pr_err("Requested Random DataIN Sequence Offsets: %u"
213 " not 0 or 1\n", random_datain_seq_offsets);
214 return -EINVAL;
215 }
216
217 a->random_datain_seq_offsets = random_datain_seq_offsets;
218 pr_debug("Set Random DataIN Sequence Offsets to %u for"
219 " Initiator Node %s\n", a->random_datain_seq_offsets,
220 iscsit_na_get_initiatorname(acl));
221
222 return 0;
223}
224
225extern int iscsit_na_random_r2t_offsets(
226 struct iscsi_node_acl *acl,
227 u32 random_r2t_offsets)
228{
229 struct iscsi_node_attrib *a = &acl->node_attrib;
230
231 if (random_r2t_offsets != 0 && random_r2t_offsets != 1) {
232 pr_err("Requested Random R2T Offsets: %u not"
233 " 0 or 1\n", random_r2t_offsets);
234 return -EINVAL;
235 }
236
237 a->random_r2t_offsets = random_r2t_offsets;
238 pr_debug("Set Random R2T Offsets to %u for"
239 " Initiator Node %s\n", a->random_r2t_offsets,
240 iscsit_na_get_initiatorname(acl));
241
242 return 0;
243}
244
245extern int iscsit_na_default_erl(
246 struct iscsi_node_acl *acl,
247 u32 default_erl)
248{
249 struct iscsi_node_attrib *a = &acl->node_attrib;
250
251 if (default_erl != 0 && default_erl != 1 && default_erl != 2) {
252 pr_err("Requested default ERL: %u not 0, 1, or 2\n",
253 default_erl);
254 return -EINVAL;
255 }
256
257 a->default_erl = default_erl;
258 pr_debug("Set use ERL0 flag to %u for Initiator"
259 " Node %s\n", a->default_erl,
260 iscsit_na_get_initiatorname(acl));
261
262 return 0;
263}
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}