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8359cf43b9
A reader should spend an extra moment whenever noticing a cast, because either something special is going on that deserves extra attention or, as is all too often the case, the code is wrong. These casts, afaics, have all been useless. They cast a foo* to a foo*, cast a void* to the assigned type, cast a foo* to void*, before assigning it to a void* variable, etc. In a few cases I also removed an additional &...[0], which is equally useless. Lastly I added three FIXMEs where, to the best of my judgement, the code appears to have a bug. It would be good if someone could check these. Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
263 lines
7.6 KiB
C
263 lines
7.6 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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* \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
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*
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* Licensed to the Linux Foundation under the General Public License (GPL) version 2.
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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 "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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{
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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 = NA_DEFAULT_ERL;
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}
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extern 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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extern 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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extern 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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extern 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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extern 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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extern 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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extern 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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extern 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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