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