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/*******************************************************************************
* This file contains the main functions related to Initiator Node Attributes.
*
* \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
*
* Licensed to the Linux Foundation under the General Public License (GPL) version 2.
*
* 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 "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_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 = NA_DEFAULT_ERL;
}
extern 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;
}
extern 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;
}
extern 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 = (struct iscsi_session *)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;
}
extern 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;
}
extern 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;
}
extern 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;
}
extern 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;
}
extern 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;
}
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