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
iscsit_na_get_initiatorname(struct iscsi_node_acl * nacl)19 static 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
iscsit_set_default_node_attribues(struct iscsi_node_acl * acl,struct iscsi_portal_group * tpg)27 void 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->authentication = NA_AUTHENTICATION_INHERITED;
34 a->dataout_timeout = NA_DATAOUT_TIMEOUT;
35 a->dataout_timeout_retries = NA_DATAOUT_TIMEOUT_RETRIES;
36 a->nopin_timeout = NA_NOPIN_TIMEOUT;
37 a->nopin_response_timeout = NA_NOPIN_RESPONSE_TIMEOUT;
38 a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS;
39 a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS;
40 a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS;
41 a->default_erl = tpg->tpg_attrib.default_erl;
42 }
43
iscsit_na_dataout_timeout(struct iscsi_node_acl * acl,u32 dataout_timeout)44 int iscsit_na_dataout_timeout(
45 struct iscsi_node_acl *acl,
46 u32 dataout_timeout)
47 {
48 struct iscsi_node_attrib *a = &acl->node_attrib;
49
50 if (dataout_timeout > NA_DATAOUT_TIMEOUT_MAX) {
51 pr_err("Requested DataOut Timeout %u larger than"
52 " maximum %u\n", dataout_timeout,
53 NA_DATAOUT_TIMEOUT_MAX);
54 return -EINVAL;
55 } else if (dataout_timeout < NA_DATAOUT_TIMEOUT_MIX) {
56 pr_err("Requested DataOut Timeout %u smaller than"
57 " minimum %u\n", dataout_timeout,
58 NA_DATAOUT_TIMEOUT_MIX);
59 return -EINVAL;
60 }
61
62 a->dataout_timeout = dataout_timeout;
63 pr_debug("Set DataOut Timeout to %u for Initiator Node"
64 " %s\n", a->dataout_timeout, iscsit_na_get_initiatorname(acl));
65
66 return 0;
67 }
68
iscsit_na_dataout_timeout_retries(struct iscsi_node_acl * acl,u32 dataout_timeout_retries)69 int iscsit_na_dataout_timeout_retries(
70 struct iscsi_node_acl *acl,
71 u32 dataout_timeout_retries)
72 {
73 struct iscsi_node_attrib *a = &acl->node_attrib;
74
75 if (dataout_timeout_retries > NA_DATAOUT_TIMEOUT_RETRIES_MAX) {
76 pr_err("Requested DataOut Timeout Retries %u larger"
77 " than maximum %u", dataout_timeout_retries,
78 NA_DATAOUT_TIMEOUT_RETRIES_MAX);
79 return -EINVAL;
80 } else if (dataout_timeout_retries < NA_DATAOUT_TIMEOUT_RETRIES_MIN) {
81 pr_err("Requested DataOut Timeout Retries %u smaller"
82 " than minimum %u", dataout_timeout_retries,
83 NA_DATAOUT_TIMEOUT_RETRIES_MIN);
84 return -EINVAL;
85 }
86
87 a->dataout_timeout_retries = dataout_timeout_retries;
88 pr_debug("Set DataOut Timeout Retries to %u for"
89 " Initiator Node %s\n", a->dataout_timeout_retries,
90 iscsit_na_get_initiatorname(acl));
91
92 return 0;
93 }
94
iscsit_na_nopin_timeout(struct iscsi_node_acl * acl,u32 nopin_timeout)95 int iscsit_na_nopin_timeout(
96 struct iscsi_node_acl *acl,
97 u32 nopin_timeout)
98 {
99 struct iscsi_node_attrib *a = &acl->node_attrib;
100 struct iscsit_session *sess;
101 struct iscsit_conn *conn;
102 struct se_node_acl *se_nacl = &a->nacl->se_node_acl;
103 struct se_session *se_sess;
104 u32 orig_nopin_timeout = a->nopin_timeout;
105
106 if (nopin_timeout > NA_NOPIN_TIMEOUT_MAX) {
107 pr_err("Requested NopIn Timeout %u larger than maximum"
108 " %u\n", nopin_timeout, NA_NOPIN_TIMEOUT_MAX);
109 return -EINVAL;
110 } else if ((nopin_timeout < NA_NOPIN_TIMEOUT_MIN) &&
111 (nopin_timeout != 0)) {
112 pr_err("Requested NopIn Timeout %u smaller than"
113 " minimum %u and not 0\n", nopin_timeout,
114 NA_NOPIN_TIMEOUT_MIN);
115 return -EINVAL;
116 }
117
118 a->nopin_timeout = nopin_timeout;
119 pr_debug("Set NopIn Timeout to %u for Initiator"
120 " Node %s\n", a->nopin_timeout,
121 iscsit_na_get_initiatorname(acl));
122 /*
123 * Reenable disabled nopin_timeout timer for all iSCSI connections.
124 */
125 if (!orig_nopin_timeout) {
126 spin_lock_bh(&se_nacl->nacl_sess_lock);
127 se_sess = se_nacl->nacl_sess;
128 if (se_sess) {
129 sess = se_sess->fabric_sess_ptr;
130
131 spin_lock(&sess->conn_lock);
132 list_for_each_entry(conn, &sess->sess_conn_list,
133 conn_list) {
134 if (conn->conn_state !=
135 TARG_CONN_STATE_LOGGED_IN)
136 continue;
137
138 spin_lock(&conn->nopin_timer_lock);
139 __iscsit_start_nopin_timer(conn);
140 spin_unlock(&conn->nopin_timer_lock);
141 }
142 spin_unlock(&sess->conn_lock);
143 }
144 spin_unlock_bh(&se_nacl->nacl_sess_lock);
145 }
146
147 return 0;
148 }
149
iscsit_na_nopin_response_timeout(struct iscsi_node_acl * acl,u32 nopin_response_timeout)150 int iscsit_na_nopin_response_timeout(
151 struct iscsi_node_acl *acl,
152 u32 nopin_response_timeout)
153 {
154 struct iscsi_node_attrib *a = &acl->node_attrib;
155
156 if (nopin_response_timeout > NA_NOPIN_RESPONSE_TIMEOUT_MAX) {
157 pr_err("Requested NopIn Response Timeout %u larger"
158 " than maximum %u\n", nopin_response_timeout,
159 NA_NOPIN_RESPONSE_TIMEOUT_MAX);
160 return -EINVAL;
161 } else if (nopin_response_timeout < NA_NOPIN_RESPONSE_TIMEOUT_MIN) {
162 pr_err("Requested NopIn Response Timeout %u smaller"
163 " than minimum %u\n", nopin_response_timeout,
164 NA_NOPIN_RESPONSE_TIMEOUT_MIN);
165 return -EINVAL;
166 }
167
168 a->nopin_response_timeout = nopin_response_timeout;
169 pr_debug("Set NopIn Response Timeout to %u for"
170 " Initiator Node %s\n", a->nopin_timeout,
171 iscsit_na_get_initiatorname(acl));
172
173 return 0;
174 }
175
iscsit_na_random_datain_pdu_offsets(struct iscsi_node_acl * acl,u32 random_datain_pdu_offsets)176 int iscsit_na_random_datain_pdu_offsets(
177 struct iscsi_node_acl *acl,
178 u32 random_datain_pdu_offsets)
179 {
180 struct iscsi_node_attrib *a = &acl->node_attrib;
181
182 if (random_datain_pdu_offsets != 0 && random_datain_pdu_offsets != 1) {
183 pr_err("Requested Random DataIN PDU Offsets: %u not"
184 " 0 or 1\n", random_datain_pdu_offsets);
185 return -EINVAL;
186 }
187
188 a->random_datain_pdu_offsets = random_datain_pdu_offsets;
189 pr_debug("Set Random DataIN PDU Offsets to %u for"
190 " Initiator Node %s\n", a->random_datain_pdu_offsets,
191 iscsit_na_get_initiatorname(acl));
192
193 return 0;
194 }
195
iscsit_na_random_datain_seq_offsets(struct iscsi_node_acl * acl,u32 random_datain_seq_offsets)196 int iscsit_na_random_datain_seq_offsets(
197 struct iscsi_node_acl *acl,
198 u32 random_datain_seq_offsets)
199 {
200 struct iscsi_node_attrib *a = &acl->node_attrib;
201
202 if (random_datain_seq_offsets != 0 && random_datain_seq_offsets != 1) {
203 pr_err("Requested Random DataIN Sequence Offsets: %u"
204 " not 0 or 1\n", random_datain_seq_offsets);
205 return -EINVAL;
206 }
207
208 a->random_datain_seq_offsets = random_datain_seq_offsets;
209 pr_debug("Set Random DataIN Sequence Offsets to %u for"
210 " Initiator Node %s\n", a->random_datain_seq_offsets,
211 iscsit_na_get_initiatorname(acl));
212
213 return 0;
214 }
215
iscsit_na_random_r2t_offsets(struct iscsi_node_acl * acl,u32 random_r2t_offsets)216 int iscsit_na_random_r2t_offsets(
217 struct iscsi_node_acl *acl,
218 u32 random_r2t_offsets)
219 {
220 struct iscsi_node_attrib *a = &acl->node_attrib;
221
222 if (random_r2t_offsets != 0 && random_r2t_offsets != 1) {
223 pr_err("Requested Random R2T Offsets: %u not"
224 " 0 or 1\n", random_r2t_offsets);
225 return -EINVAL;
226 }
227
228 a->random_r2t_offsets = random_r2t_offsets;
229 pr_debug("Set Random R2T Offsets to %u for"
230 " Initiator Node %s\n", a->random_r2t_offsets,
231 iscsit_na_get_initiatorname(acl));
232
233 return 0;
234 }
235
iscsit_na_default_erl(struct iscsi_node_acl * acl,u32 default_erl)236 int iscsit_na_default_erl(
237 struct iscsi_node_acl *acl,
238 u32 default_erl)
239 {
240 struct iscsi_node_attrib *a = &acl->node_attrib;
241
242 if (default_erl != 0 && default_erl != 1 && default_erl != 2) {
243 pr_err("Requested default ERL: %u not 0, 1, or 2\n",
244 default_erl);
245 return -EINVAL;
246 }
247
248 a->default_erl = default_erl;
249 pr_debug("Set use ERL0 flag to %u for Initiator"
250 " Node %s\n", a->default_erl,
251 iscsit_na_get_initiatorname(acl));
252
253 return 0;
254 }
255