iscsi_target_nodeattrib.c 7.1 KB

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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. #include <target/target_core_base.h>
  11. #include <target/iscsi/iscsi_target_core.h>
  12. #include "iscsi_target_device.h"
  13. #include "iscsi_target_tpg.h"
  14. #include "iscsi_target_util.h"
  15. #include "iscsi_target_nodeattrib.h"
  16. static inline char *iscsit_na_get_initiatorname(
  17. struct iscsi_node_acl *nacl)
  18. {
  19. struct se_node_acl *se_nacl = &nacl->se_node_acl;
  20. return &se_nacl->initiatorname[0];
  21. }
  22. void iscsit_set_default_node_attribues(
  23. struct iscsi_node_acl *acl,
  24. struct iscsi_portal_group *tpg)
  25. {
  26. struct iscsi_node_attrib *a = &acl->node_attrib;
  27. a->dataout_timeout = NA_DATAOUT_TIMEOUT;
  28. a->dataout_timeout_retries = NA_DATAOUT_TIMEOUT_RETRIES;
  29. a->nopin_timeout = NA_NOPIN_TIMEOUT;
  30. a->nopin_response_timeout = NA_NOPIN_RESPONSE_TIMEOUT;
  31. a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS;
  32. a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS;
  33. a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS;
  34. a->default_erl = tpg->tpg_attrib.default_erl;
  35. }
  36. int iscsit_na_dataout_timeout(
  37. struct iscsi_node_acl *acl,
  38. u32 dataout_timeout)
  39. {
  40. struct iscsi_node_attrib *a = &acl->node_attrib;
  41. if (dataout_timeout > NA_DATAOUT_TIMEOUT_MAX) {
  42. pr_err("Requested DataOut Timeout %u larger than"
  43. " maximum %u\n", dataout_timeout,
  44. NA_DATAOUT_TIMEOUT_MAX);
  45. return -EINVAL;
  46. } else if (dataout_timeout < NA_DATAOUT_TIMEOUT_MIX) {
  47. pr_err("Requested DataOut Timeout %u smaller than"
  48. " minimum %u\n", dataout_timeout,
  49. NA_DATAOUT_TIMEOUT_MIX);
  50. return -EINVAL;
  51. }
  52. a->dataout_timeout = dataout_timeout;
  53. pr_debug("Set DataOut Timeout to %u for Initiator Node"
  54. " %s\n", a->dataout_timeout, iscsit_na_get_initiatorname(acl));
  55. return 0;
  56. }
  57. int iscsit_na_dataout_timeout_retries(
  58. struct iscsi_node_acl *acl,
  59. u32 dataout_timeout_retries)
  60. {
  61. struct iscsi_node_attrib *a = &acl->node_attrib;
  62. if (dataout_timeout_retries > NA_DATAOUT_TIMEOUT_RETRIES_MAX) {
  63. pr_err("Requested DataOut Timeout Retries %u larger"
  64. " than maximum %u", dataout_timeout_retries,
  65. NA_DATAOUT_TIMEOUT_RETRIES_MAX);
  66. return -EINVAL;
  67. } else if (dataout_timeout_retries < NA_DATAOUT_TIMEOUT_RETRIES_MIN) {
  68. pr_err("Requested DataOut Timeout Retries %u smaller"
  69. " than minimum %u", dataout_timeout_retries,
  70. NA_DATAOUT_TIMEOUT_RETRIES_MIN);
  71. return -EINVAL;
  72. }
  73. a->dataout_timeout_retries = dataout_timeout_retries;
  74. pr_debug("Set DataOut Timeout Retries to %u for"
  75. " Initiator Node %s\n", a->dataout_timeout_retries,
  76. iscsit_na_get_initiatorname(acl));
  77. return 0;
  78. }
  79. int iscsit_na_nopin_timeout(
  80. struct iscsi_node_acl *acl,
  81. u32 nopin_timeout)
  82. {
  83. struct iscsi_node_attrib *a = &acl->node_attrib;
  84. struct iscsi_session *sess;
  85. struct iscsi_conn *conn;
  86. struct se_node_acl *se_nacl = &a->nacl->se_node_acl;
  87. struct se_session *se_sess;
  88. u32 orig_nopin_timeout = a->nopin_timeout;
  89. if (nopin_timeout > NA_NOPIN_TIMEOUT_MAX) {
  90. pr_err("Requested NopIn Timeout %u larger than maximum"
  91. " %u\n", nopin_timeout, NA_NOPIN_TIMEOUT_MAX);
  92. return -EINVAL;
  93. } else if ((nopin_timeout < NA_NOPIN_TIMEOUT_MIN) &&
  94. (nopin_timeout != 0)) {
  95. pr_err("Requested NopIn Timeout %u smaller than"
  96. " minimum %u and not 0\n", nopin_timeout,
  97. NA_NOPIN_TIMEOUT_MIN);
  98. return -EINVAL;
  99. }
  100. a->nopin_timeout = nopin_timeout;
  101. pr_debug("Set NopIn Timeout to %u for Initiator"
  102. " Node %s\n", a->nopin_timeout,
  103. iscsit_na_get_initiatorname(acl));
  104. /*
  105. * Reenable disabled nopin_timeout timer for all iSCSI connections.
  106. */
  107. if (!orig_nopin_timeout) {
  108. spin_lock_bh(&se_nacl->nacl_sess_lock);
  109. se_sess = se_nacl->nacl_sess;
  110. if (se_sess) {
  111. sess = se_sess->fabric_sess_ptr;
  112. spin_lock(&sess->conn_lock);
  113. list_for_each_entry(conn, &sess->sess_conn_list,
  114. conn_list) {
  115. if (conn->conn_state !=
  116. TARG_CONN_STATE_LOGGED_IN)
  117. continue;
  118. spin_lock(&conn->nopin_timer_lock);
  119. __iscsit_start_nopin_timer(conn);
  120. spin_unlock(&conn->nopin_timer_lock);
  121. }
  122. spin_unlock(&sess->conn_lock);
  123. }
  124. spin_unlock_bh(&se_nacl->nacl_sess_lock);
  125. }
  126. return 0;
  127. }
  128. int iscsit_na_nopin_response_timeout(
  129. struct iscsi_node_acl *acl,
  130. u32 nopin_response_timeout)
  131. {
  132. struct iscsi_node_attrib *a = &acl->node_attrib;
  133. if (nopin_response_timeout > NA_NOPIN_RESPONSE_TIMEOUT_MAX) {
  134. pr_err("Requested NopIn Response Timeout %u larger"
  135. " than maximum %u\n", nopin_response_timeout,
  136. NA_NOPIN_RESPONSE_TIMEOUT_MAX);
  137. return -EINVAL;
  138. } else if (nopin_response_timeout < NA_NOPIN_RESPONSE_TIMEOUT_MIN) {
  139. pr_err("Requested NopIn Response Timeout %u smaller"
  140. " than minimum %u\n", nopin_response_timeout,
  141. NA_NOPIN_RESPONSE_TIMEOUT_MIN);
  142. return -EINVAL;
  143. }
  144. a->nopin_response_timeout = nopin_response_timeout;
  145. pr_debug("Set NopIn Response Timeout to %u for"
  146. " Initiator Node %s\n", a->nopin_timeout,
  147. iscsit_na_get_initiatorname(acl));
  148. return 0;
  149. }
  150. int iscsit_na_random_datain_pdu_offsets(
  151. struct iscsi_node_acl *acl,
  152. u32 random_datain_pdu_offsets)
  153. {
  154. struct iscsi_node_attrib *a = &acl->node_attrib;
  155. if (random_datain_pdu_offsets != 0 && random_datain_pdu_offsets != 1) {
  156. pr_err("Requested Random DataIN PDU Offsets: %u not"
  157. " 0 or 1\n", random_datain_pdu_offsets);
  158. return -EINVAL;
  159. }
  160. a->random_datain_pdu_offsets = random_datain_pdu_offsets;
  161. pr_debug("Set Random DataIN PDU Offsets to %u for"
  162. " Initiator Node %s\n", a->random_datain_pdu_offsets,
  163. iscsit_na_get_initiatorname(acl));
  164. return 0;
  165. }
  166. int iscsit_na_random_datain_seq_offsets(
  167. struct iscsi_node_acl *acl,
  168. u32 random_datain_seq_offsets)
  169. {
  170. struct iscsi_node_attrib *a = &acl->node_attrib;
  171. if (random_datain_seq_offsets != 0 && random_datain_seq_offsets != 1) {
  172. pr_err("Requested Random DataIN Sequence Offsets: %u"
  173. " not 0 or 1\n", random_datain_seq_offsets);
  174. return -EINVAL;
  175. }
  176. a->random_datain_seq_offsets = random_datain_seq_offsets;
  177. pr_debug("Set Random DataIN Sequence Offsets to %u for"
  178. " Initiator Node %s\n", a->random_datain_seq_offsets,
  179. iscsit_na_get_initiatorname(acl));
  180. return 0;
  181. }
  182. int iscsit_na_random_r2t_offsets(
  183. struct iscsi_node_acl *acl,
  184. u32 random_r2t_offsets)
  185. {
  186. struct iscsi_node_attrib *a = &acl->node_attrib;
  187. if (random_r2t_offsets != 0 && random_r2t_offsets != 1) {
  188. pr_err("Requested Random R2T Offsets: %u not"
  189. " 0 or 1\n", random_r2t_offsets);
  190. return -EINVAL;
  191. }
  192. a->random_r2t_offsets = random_r2t_offsets;
  193. pr_debug("Set Random R2T Offsets to %u for"
  194. " Initiator Node %s\n", a->random_r2t_offsets,
  195. iscsit_na_get_initiatorname(acl));
  196. return 0;
  197. }
  198. int iscsit_na_default_erl(
  199. struct iscsi_node_acl *acl,
  200. u32 default_erl)
  201. {
  202. struct iscsi_node_attrib *a = &acl->node_attrib;
  203. if (default_erl != 0 && default_erl != 1 && default_erl != 2) {
  204. pr_err("Requested default ERL: %u not 0, 1, or 2\n",
  205. default_erl);
  206. return -EINVAL;
  207. }
  208. a->default_erl = default_erl;
  209. pr_debug("Set use ERL0 flag to %u for Initiator"
  210. " Node %s\n", a->default_erl,
  211. iscsit_na_get_initiatorname(acl));
  212. return 0;
  213. }