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 | |
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 | |
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 | |
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 | |
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 | |
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(lock: &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(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(lock: &conn->nopin_timer_lock); |
139 | __iscsit_start_nopin_timer(conn); |
140 | spin_unlock(lock: &conn->nopin_timer_lock); |
141 | } |
142 | spin_unlock(lock: &sess->conn_lock); |
143 | } |
144 | spin_unlock_bh(lock: &se_nacl->nacl_sess_lock); |
145 | } |
146 | |
147 | return 0; |
148 | } |
149 | |
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 | |
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 | |
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 | |
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 | |
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 | |