/******************************************************************************* * This file contains the main functions related to Initiator Node Attributes. * * (c) Copyright 2007-2013 Datera, Inc. * * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. ******************************************************************************/ #include <target/target_core_base.h> #include <target/iscsi/iscsi_target_core.h> #include "iscsi_target_device.h" #include "iscsi_target_tpg.h" #include "iscsi_target_util.h" #include "iscsi_target_nodeattrib.h" static inline char *iscsit_na_get_initiatorname( struct iscsi_node_acl *nacl) { struct se_node_acl *se_nacl = &nacl->se_node_acl; return &se_nacl->initiatorname[0]; } void iscsit_set_default_node_attribues( struct iscsi_node_acl *acl, struct iscsi_portal_group *tpg) { struct iscsi_node_attrib *a = &acl->node_attrib; a->dataout_timeout = NA_DATAOUT_TIMEOUT; a->dataout_timeout_retries = NA_DATAOUT_TIMEOUT_RETRIES; a->nopin_timeout = NA_NOPIN_TIMEOUT; a->nopin_response_timeout = NA_NOPIN_RESPONSE_TIMEOUT; a->random_datain_pdu_offsets = NA_RANDOM_DATAIN_PDU_OFFSETS; a->random_datain_seq_offsets = NA_RANDOM_DATAIN_SEQ_OFFSETS; a->random_r2t_offsets = NA_RANDOM_R2T_OFFSETS; a->default_erl = tpg->tpg_attrib.default_erl; } int iscsit_na_dataout_timeout( struct iscsi_node_acl *acl, u32 dataout_timeout) { struct iscsi_node_attrib *a = &acl->node_attrib; if (dataout_timeout > NA_DATAOUT_TIMEOUT_MAX) { pr_err("Requested DataOut Timeout %u larger than" " maximum %u\n", dataout_timeout, NA_DATAOUT_TIMEOUT_MAX); return -EINVAL; } else if (dataout_timeout < NA_DATAOUT_TIMEOUT_MIX) { pr_err("Requested DataOut Timeout %u smaller than" " minimum %u\n", dataout_timeout, NA_DATAOUT_TIMEOUT_MIX); return -EINVAL; } a->dataout_timeout = dataout_timeout; pr_debug("Set DataOut Timeout to %u for Initiator Node" " %s\n", a->dataout_timeout, iscsit_na_get_initiatorname(acl)); return 0; } int iscsit_na_dataout_timeout_retries( struct iscsi_node_acl *acl, u32 dataout_timeout_retries) { struct iscsi_node_attrib *a = &acl->node_attrib; if (dataout_timeout_retries > NA_DATAOUT_TIMEOUT_RETRIES_MAX) { pr_err("Requested DataOut Timeout Retries %u larger" " than maximum %u", dataout_timeout_retries, NA_DATAOUT_TIMEOUT_RETRIES_MAX); return -EINVAL; } else if (dataout_timeout_retries < NA_DATAOUT_TIMEOUT_RETRIES_MIN) { pr_err("Requested DataOut Timeout Retries %u smaller" " than minimum %u", dataout_timeout_retries, NA_DATAOUT_TIMEOUT_RETRIES_MIN); return -EINVAL; } a->dataout_timeout_retries = dataout_timeout_retries; pr_debug("Set DataOut Timeout Retries to %u for" " Initiator Node %s\n", a->dataout_timeout_retries, iscsit_na_get_initiatorname(acl)); return 0; } int iscsit_na_nopin_timeout( struct iscsi_node_acl *acl, u32 nopin_timeout) { struct iscsi_node_attrib *a = &acl->node_attrib; struct iscsi_session *sess; struct iscsi_conn *conn; struct se_node_acl *se_nacl = &a->nacl->se_node_acl; struct se_session *se_sess; u32 orig_nopin_timeout = a->nopin_timeout; if (nopin_timeout > NA_NOPIN_TIMEOUT_MAX) { pr_err("Requested NopIn Timeout %u larger than maximum" " %u\n", nopin_timeout, NA_NOPIN_TIMEOUT_MAX); return -EINVAL; } else if ((nopin_timeout < NA_NOPIN_TIMEOUT_MIN) && (nopin_timeout != 0)) { pr_err("Requested NopIn Timeout %u smaller than" " minimum %u and not 0\n", nopin_timeout, NA_NOPIN_TIMEOUT_MIN); return -EINVAL; } a->nopin_timeout = nopin_timeout; pr_debug("Set NopIn Timeout to %u for Initiator" " Node %s\n", a->nopin_timeout, iscsit_na_get_initiatorname(acl)); /* * Reenable disabled nopin_timeout timer for all iSCSI connections. */ if (!orig_nopin_timeout) { spin_lock_bh(&se_nacl->nacl_sess_lock); se_sess = se_nacl->nacl_sess; if (se_sess) { sess = se_sess->fabric_sess_ptr; spin_lock(&sess->conn_lock); list_for_each_entry(conn, &sess->sess_conn_list, conn_list) { if (conn->conn_state != TARG_CONN_STATE_LOGGED_IN) continue; spin_lock(&conn->nopin_timer_lock); __iscsit_start_nopin_timer(conn); spin_unlock(&conn->nopin_timer_lock); } spin_unlock(&sess->conn_lock); } spin_unlock_bh(&se_nacl->nacl_sess_lock); } return 0; } int iscsit_na_nopin_response_timeout( struct iscsi_node_acl *acl, u32 nopin_response_timeout) { struct iscsi_node_attrib *a = &acl->node_attrib; if (nopin_response_timeout > NA_NOPIN_RESPONSE_TIMEOUT_MAX) { pr_err("Requested NopIn Response Timeout %u larger" " than maximum %u\n", nopin_response_timeout, NA_NOPIN_RESPONSE_TIMEOUT_MAX); return -EINVAL; } else if (nopin_response_timeout < NA_NOPIN_RESPONSE_TIMEOUT_MIN) { pr_err("Requested NopIn Response Timeout %u smaller" " than minimum %u\n", nopin_response_timeout, NA_NOPIN_RESPONSE_TIMEOUT_MIN); return -EINVAL; } a->nopin_response_timeout = nopin_response_timeout; pr_debug("Set NopIn Response Timeout to %u for" " Initiator Node %s\n", a->nopin_timeout, iscsit_na_get_initiatorname(acl)); return 0; } int iscsit_na_random_datain_pdu_offsets( struct iscsi_node_acl *acl, u32 random_datain_pdu_offsets) { struct iscsi_node_attrib *a = &acl->node_attrib; if (random_datain_pdu_offsets != 0 && random_datain_pdu_offsets != 1) { pr_err("Requested Random DataIN PDU Offsets: %u not" " 0 or 1\n", random_datain_pdu_offsets); return -EINVAL; } a->random_datain_pdu_offsets = random_datain_pdu_offsets; pr_debug("Set Random DataIN PDU Offsets to %u for" " Initiator Node %s\n", a->random_datain_pdu_offsets, iscsit_na_get_initiatorname(acl)); return 0; } int iscsit_na_random_datain_seq_offsets( struct iscsi_node_acl *acl, u32 random_datain_seq_offsets) { struct iscsi_node_attrib *a = &acl->node_attrib; if (random_datain_seq_offsets != 0 && random_datain_seq_offsets != 1) { pr_err("Requested Random DataIN Sequence Offsets: %u" " not 0 or 1\n", random_datain_seq_offsets); return -EINVAL; } a->random_datain_seq_offsets = random_datain_seq_offsets; pr_debug("Set Random DataIN Sequence Offsets to %u for" " Initiator Node %s\n", a->random_datain_seq_offsets, iscsit_na_get_initiatorname(acl)); return 0; } int iscsit_na_random_r2t_offsets( struct iscsi_node_acl *acl, u32 random_r2t_offsets) { struct iscsi_node_attrib *a = &acl->node_attrib; if (random_r2t_offsets != 0 && random_r2t_offsets != 1) { pr_err("Requested Random R2T Offsets: %u not" " 0 or 1\n", random_r2t_offsets); return -EINVAL; } a->random_r2t_offsets = random_r2t_offsets; pr_debug("Set Random R2T Offsets to %u for" " Initiator Node %s\n", a->random_r2t_offsets, iscsit_na_get_initiatorname(acl)); return 0; } int iscsit_na_default_erl( struct iscsi_node_acl *acl, u32 default_erl) { struct iscsi_node_attrib *a = &acl->node_attrib; if (default_erl != 0 && default_erl != 1 && default_erl != 2) { pr_err("Requested default ERL: %u not 0, 1, or 2\n", default_erl); return -EINVAL; } a->default_erl = default_erl; pr_debug("Set use ERL0 flag to %u for Initiator" " Node %s\n", a->default_erl, iscsit_na_get_initiatorname(acl)); return 0; }