*
* Forward port and refactoring to modern qla2xxx and target/configfs
*
- * Copyright (C) 2010-2011 Nicholas A. Bellinger <nab@kernel.org>
+ * Copyright (C) 2010-2013 Nicholas A. Bellinger <nab@kernel.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
}
ql_dbg(ql_dbg_tgt, vha, 0xe047,
- "scsi(%ld): resetting (session %p from port "
- "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x, "
- "mcmd %x, loop_id %d)\n", vha->host_no, sess,
- sess->port_name[0], sess->port_name[1],
- sess->port_name[2], sess->port_name[3],
- sess->port_name[4], sess->port_name[5],
- sess->port_name[6], sess->port_name[7],
+ "scsi(%ld): resetting (session %p from port %8phC mcmd %x, "
+ "loop_id %d)\n", vha->host_no, sess, sess->port_name,
mcmd, loop_id);
lun = a->u.isp24.fcp_cmnd.lun;
sess->expires = jiffies + dev_loss_tmo * HZ;
ql_dbg(ql_dbg_tgt, sess->vha, 0xe048,
- "qla_target(%d): session for port %02x:%02x:%02x:"
- "%02x:%02x:%02x:%02x:%02x (loop ID %d) scheduled for "
+ "qla_target(%d): session for port %8phC (loop ID %d) scheduled for "
"deletion in %u secs (expires: %lu) immed: %d\n",
- sess->vha->vp_idx,
- sess->port_name[0], sess->port_name[1],
- sess->port_name[2], sess->port_name[3],
- sess->port_name[4], sess->port_name[5],
- sess->port_name[6], sess->port_name[7],
- sess->loop_id, dev_loss_tmo, sess->expires, immediate);
+ sess->vha->vp_idx, sess->port_name, sess->loop_id, dev_loss_tmo,
+ sess->expires, immediate);
if (immediate)
schedule_delayed_work(&tgt->sess_del_work, 0);
sess = kzalloc(sizeof(*sess), GFP_KERNEL);
if (!sess) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04a,
- "qla_target(%u): session allocation failed, "
- "all commands from port %02x:%02x:%02x:%02x:"
- "%02x:%02x:%02x:%02x will be refused", vha->vp_idx,
- fcport->port_name[0], fcport->port_name[1],
- fcport->port_name[2], fcport->port_name[3],
- fcport->port_name[4], fcport->port_name[5],
- fcport->port_name[6], fcport->port_name[7]);
+ "qla_target(%u): session allocation failed, all commands "
+ "from port %8phC will be refused", vha->vp_idx,
+ fcport->port_name);
return NULL;
}
spin_unlock_irqrestore(&ha->hardware_lock, flags);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04b,
- "qla_target(%d): %ssession for wwn %02x:%02x:%02x:%02x:"
- "%02x:%02x:%02x:%02x (loop_id %d, s_id %x:%x:%x, confirmed"
- " completion %ssupported) added\n",
- vha->vp_idx, local ? "local " : "", fcport->port_name[0],
- fcport->port_name[1], fcport->port_name[2], fcport->port_name[3],
- fcport->port_name[4], fcport->port_name[5], fcport->port_name[6],
- fcport->port_name[7], fcport->loop_id, sess->s_id.b.domain,
- sess->s_id.b.area, sess->s_id.b.al_pa, sess->conf_compl_supported ?
- "" : "not ");
+ "qla_target(%d): %ssession for wwn %8phC (loop_id %d, "
+ "s_id %x:%x:%x, confirmed completion %ssupported) added\n",
+ vha->vp_idx, local ? "local " : "", fcport->port_name,
+ fcport->loop_id, sess->s_id.b.domain, sess->s_id.b.area,
+ sess->s_id.b.al_pa, sess->conf_compl_supported ? "" : "not ");
return sess;
}
qlt_undelete_sess(sess);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04c,
- "qla_target(%u): %ssession for port %02x:"
- "%02x:%02x:%02x:%02x:%02x:%02x:%02x (loop ID %d) "
- "reappeared\n", vha->vp_idx, sess->local ? "local "
- : "", sess->port_name[0], sess->port_name[1],
- sess->port_name[2], sess->port_name[3],
- sess->port_name[4], sess->port_name[5],
- sess->port_name[6], sess->port_name[7],
+ "qla_target(%u): %ssession for port %8phC "
+ "(loop ID %d) reappeared\n", vha->vp_idx,
+ sess->local ? "local " : "", sess->port_name,
sess->loop_id);
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf007,
if (sess && sess->local) {
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf04d,
"qla_target(%u): local session for "
- "port %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x "
- "(loop ID %d) became global\n", vha->vp_idx,
- fcport->port_name[0], fcport->port_name[1],
- fcport->port_name[2], fcport->port_name[3],
- fcport->port_name[4], fcport->port_name[5],
- fcport->port_name[6], fcport->port_name[7],
- sess->loop_id);
+ "port %8phC (loop ID %d) became global\n", vha->vp_idx,
+ fcport->port_name, sess->loop_id);
sess->local = 0;
}
ha->tgt.tgt_ops->put_sess(sess);
int res = 0;
ql_dbg(ql_dbg_tgt_mgt, vha, 0xf026,
- "qla_target(%d): Port ID: 0x%02x:%02x:%02x"
- " ELS opcode: 0x%02x\n", vha->vp_idx, iocb->u.isp24.port_id[0],
- iocb->u.isp24.port_id[1], iocb->u.isp24.port_id[2],
- iocb->u.isp24.status_subcode);
+ "qla_target(%d): Port ID: 0x%3phC ELS opcode: 0x%02x\n",
+ vha->vp_idx, iocb->u.isp24.port_id, iocb->u.isp24.status_subcode);
switch (iocb->u.isp24.status_subcode) {
case ELS_PLOGI:
* This file contains tcm implementation using v4 configfs fabric infrastructure
* for QLogic target mode HBAs
*
- * ?? Copyright 2010-2011 RisingTide Systems LLC.
+ * (c) Copyright 2010-2013 Datera, Inc.
*
- * Licensed to the Linux Foundation under the General Public License (GPL)
- * version 2.
- *
- * Author: Nicholas A. Bellinger <nab@risingtidesystems.com>
+ * Author: Nicholas A. Bellinger <nab@daterainc.com>
*
* tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
* the TCM_FC / Open-FCoE.org fabric module.
return QLA_TPG_ATTRIB(tpg)->prod_mode_write_protect;
}
+ static int tcm_qla2xxx_check_demo_mode_login_only(struct se_portal_group *se_tpg)
+ {
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+
+ return QLA_TPG_ATTRIB(tpg)->demo_mode_login_only;
+ }
+
static struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(
struct se_portal_group *se_tpg)
{
return 0;
}
- /*
- * The LIO target core uses DMA_TO_DEVICE to mean that data is going
- * to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
- * that data is coming from the target (eg handling a READ). However,
- * this is just the opposite of what we have to tell the DMA mapping
- * layer -- eg when handling a READ, the HBA will have to DMA the data
- * out of memory so it can send it to the initiator, which means we
- * need to use DMA_TO_DEVICE when we map the data.
- */
- static enum dma_data_direction tcm_qla2xxx_mapping_dir(struct se_cmd *se_cmd)
- {
- if (se_cmd->se_cmd_flags & SCF_BIDI)
- return DMA_BIDIRECTIONAL;
-
- switch (se_cmd->data_direction) {
- case DMA_TO_DEVICE:
- return DMA_FROM_DEVICE;
- case DMA_FROM_DEVICE:
- return DMA_TO_DEVICE;
- case DMA_NONE:
- default:
- return DMA_NONE;
- }
- }
-
static int tcm_qla2xxx_write_pending(struct se_cmd *se_cmd)
{
struct qla_tgt_cmd *cmd = container_of(se_cmd,
struct qla_tgt_cmd, se_cmd);
cmd->bufflen = se_cmd->data_length;
- cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
+ cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
cmd->sg_cnt = se_cmd->t_data_nents;
cmd->sg = se_cmd->t_data_sg;
struct qla_tgt_cmd, se_cmd);
cmd->bufflen = se_cmd->data_length;
- cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
+ cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
cmd->sg_cnt = se_cmd->t_data_nents;
cmd->sg = NULL;
cmd->sg_cnt = 0;
cmd->offset = 0;
- cmd->dma_data_direction = tcm_qla2xxx_mapping_dir(se_cmd);
+ cmd->dma_data_direction = target_reverse_dma_direction(se_cmd);
cmd->aborted = (se_cmd->transport_state & CMD_T_ABORTED);
if (se_cmd->data_direction == DMA_FROM_DEVICE) {
DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
QLA_TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
+ /*
+ * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_login_only
+ */
+ DEF_QLA_TPG_ATTR_BOOL(demo_mode_login_only);
+ DEF_QLA_TPG_ATTRIB(demo_mode_login_only);
+ QLA_TPG_ATTR(demo_mode_login_only, S_IRUGO | S_IWUSR);
+
static struct configfs_attribute *tcm_qla2xxx_tpg_attrib_attrs[] = {
&tcm_qla2xxx_tpg_attrib_generate_node_acls.attr,
&tcm_qla2xxx_tpg_attrib_cache_dynamic_acls.attr,
&tcm_qla2xxx_tpg_attrib_demo_mode_write_protect.attr,
&tcm_qla2xxx_tpg_attrib_prod_mode_write_protect.attr,
+ &tcm_qla2xxx_tpg_attrib_demo_mode_login_only.attr,
NULL,
};
QLA_TPG_ATTRIB(tpg)->generate_node_acls = 1;
QLA_TPG_ATTRIB(tpg)->demo_mode_write_protect = 1;
QLA_TPG_ATTRIB(tpg)->cache_dynamic_acls = 1;
+ QLA_TPG_ATTRIB(tpg)->demo_mode_login_only = 1;
ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
&tpg->se_tpg, tpg, TRANSPORT_TPG_TYPE_NORMAL);
if (sess->loop_id != loop_id || sess->s_id.b24 != s_id.b24)
- pr_info("Updating session %p from port %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
- sess,
- sess->port_name[0], sess->port_name[1],
- sess->port_name[2], sess->port_name[3],
- sess->port_name[4], sess->port_name[5],
- sess->port_name[6], sess->port_name[7],
- sess->loop_id, loop_id,
- sess->s_id.b.domain, sess->s_id.b.area, sess->s_id.b.al_pa,
- s_id.b.domain, s_id.b.area, s_id.b.al_pa);
+ pr_info("Updating session %p from port %8phC loop_id %d -> %d s_id %x:%x:%x -> %x:%x:%x\n",
+ sess, sess->port_name,
+ sess->loop_id, loop_id, sess->s_id.b.domain,
+ sess->s_id.b.area, sess->s_id.b.al_pa, s_id.b.domain,
+ s_id.b.area, s_id.b.al_pa);
if (sess->loop_id != loop_id) {
/*
tcm_qla2xxx_check_demo_write_protect,
.tpg_check_prod_mode_write_protect =
tcm_qla2xxx_check_prod_write_protect,
- .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
+ .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
.tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
.tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
.tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
.tpg_check_demo_mode_cache = tcm_qla2xxx_check_true,
.tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_true,
.tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_false,
- .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_true,
+ .tpg_check_demo_mode_login_only = tcm_qla2xxx_check_demo_mode_login_only,
.tpg_alloc_fabric_acl = tcm_qla2xxx_alloc_fabric_acl,
.tpg_release_fabric_acl = tcm_qla2xxx_release_fabric_acl,
.tpg_get_inst_index = tcm_qla2xxx_tpg_get_inst_index,
/*******************************************************************************
* This file contains main functions related to the iSCSI Target Core Driver.
*
- * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
- *
- * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
+ * (c) Copyright 2007-2013 Datera, Inc.
*
* Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
*
struct iscsit_global *iscsit_global;
- struct kmem_cache *lio_cmd_cache;
struct kmem_cache *lio_qr_cache;
struct kmem_cache *lio_dr_cache;
struct kmem_cache *lio_ooo_cache;
spin_unlock_bh(&np->np_thread_lock);
return -1;
}
- if (np->np_login_tpg) {
- pr_err("np->np_login_tpg() is not NULL!\n");
- spin_unlock_bh(&np->np_thread_lock);
- return -1;
- }
spin_unlock_bh(&np->np_thread_lock);
/*
* Determine if the portal group is accepting storage traffic.
/*
* Here we serialize access across the TIQN+TPG Tuple.
*/
- ret = mutex_lock_interruptible(&tpg->np_login_lock);
+ ret = down_interruptible(&tpg->np_login_sem);
if ((ret != 0) || signal_pending(current))
return -1;
- spin_lock_bh(&np->np_thread_lock);
- np->np_login_tpg = tpg;
- spin_unlock_bh(&np->np_thread_lock);
+ spin_lock_bh(&tpg->tpg_state_lock);
+ if (tpg->tpg_state != TPG_STATE_ACTIVE) {
+ spin_unlock_bh(&tpg->tpg_state_lock);
+ up(&tpg->np_login_sem);
+ return -1;
+ }
+ spin_unlock_bh(&tpg->tpg_state_lock);
return 0;
}
- int iscsit_deaccess_np(struct iscsi_np *np, struct iscsi_portal_group *tpg)
+ void iscsit_login_kref_put(struct kref *kref)
+ {
+ struct iscsi_tpg_np *tpg_np = container_of(kref,
+ struct iscsi_tpg_np, tpg_np_kref);
+
+ complete(&tpg_np->tpg_np_comp);
+ }
+
+ int iscsit_deaccess_np(struct iscsi_np *np, struct iscsi_portal_group *tpg,
+ struct iscsi_tpg_np *tpg_np)
{
struct iscsi_tiqn *tiqn = tpg->tpg_tiqn;
- spin_lock_bh(&np->np_thread_lock);
- np->np_login_tpg = NULL;
- spin_unlock_bh(&np->np_thread_lock);
+ up(&tpg->np_login_sem);
- mutex_unlock(&tpg->np_login_lock);
+ if (tpg_np)
+ kref_put(&tpg_np->tpg_np_kref, iscsit_login_kref_put);
if (tiqn)
iscsit_put_tiqn_for_login(tiqn);
int iscsit_reset_np_thread(
struct iscsi_np *np,
struct iscsi_tpg_np *tpg_np,
- struct iscsi_portal_group *tpg)
+ struct iscsi_portal_group *tpg,
+ bool shutdown)
{
spin_lock_bh(&np->np_thread_lock);
- if (tpg && tpg_np) {
- /*
- * The reset operation need only be performed when the
- * passed struct iscsi_portal_group has a login in progress
- * to one of the network portals.
- */
- if (tpg_np->tpg_np->np_login_tpg != tpg) {
- spin_unlock_bh(&np->np_thread_lock);
- return 0;
- }
- }
if (np->np_thread_state == ISCSI_NP_THREAD_INACTIVE) {
spin_unlock_bh(&np->np_thread_lock);
return 0;
}
spin_unlock_bh(&np->np_thread_lock);
+ if (tpg_np && shutdown) {
+ kref_put(&tpg_np->tpg_np_kref, iscsit_login_kref_put);
+
+ wait_for_completion(&tpg_np->tpg_np_comp);
+ }
+
return 0;
}
.iscsit_setup_np = iscsit_setup_np,
.iscsit_accept_np = iscsit_accept_np,
.iscsit_free_np = iscsit_free_np,
- .iscsit_alloc_cmd = iscsit_alloc_cmd,
.iscsit_get_login_rx = iscsit_get_login_rx,
.iscsit_put_login_tx = iscsit_put_login_tx,
.iscsit_get_dataout = iscsit_build_r2ts_for_cmd,
goto ts_out1;
}
- lio_cmd_cache = kmem_cache_create("lio_cmd_cache",
- sizeof(struct iscsi_cmd), __alignof__(struct iscsi_cmd),
- 0, NULL);
- if (!lio_cmd_cache) {
- pr_err("Unable to kmem_cache_create() for"
- " lio_cmd_cache\n");
- goto ts_out2;
- }
-
lio_qr_cache = kmem_cache_create("lio_qr_cache",
sizeof(struct iscsi_queue_req),
__alignof__(struct iscsi_queue_req), 0, NULL);
if (!lio_qr_cache) {
pr_err("nable to kmem_cache_create() for"
" lio_qr_cache\n");
- goto cmd_out;
+ goto ts_out2;
}
lio_dr_cache = kmem_cache_create("lio_dr_cache",
kmem_cache_destroy(lio_dr_cache);
qr_out:
kmem_cache_destroy(lio_qr_cache);
- cmd_out:
- kmem_cache_destroy(lio_cmd_cache);
ts_out2:
iscsi_deallocate_thread_sets();
ts_out1:
iscsi_thread_set_free();
iscsit_release_discovery_tpg();
iscsit_unregister_transport(&iscsi_target_transport);
- kmem_cache_destroy(lio_cmd_cache);
kmem_cache_destroy(lio_qr_cache);
kmem_cache_destroy(lio_dr_cache);
kmem_cache_destroy(lio_ooo_cache);
if (cmd->reject_reason)
return 0;
- target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd);
return 1;
}
/*
*/
cmdsn_ret = iscsit_sequence_cmd(cmd->conn, cmd,
(unsigned char *)hdr, hdr->cmdsn);
- if (cmdsn_ret == CMDSN_ERROR_CANNOT_RECOVER) {
+ if (cmdsn_ret == CMDSN_ERROR_CANNOT_RECOVER)
return -1;
- } else if (cmdsn_ret == CMDSN_LOWER_THAN_EXP) {
- target_put_sess_cmd(conn->sess->se_sess, &cmd->se_cmd);
- return 0;
- }
- if (cmd->sense_reason) {
+ if (cmd->sense_reason || cmdsn_ret == CMDSN_LOWER_THAN_EXP) {
int rc;
rc = iscsit_dump_data_payload(cmd->conn,
if (hdr->itt == RESERVED_ITT && !(hdr->opcode & ISCSI_OP_IMMEDIATE)) {
pr_err("NOPOUT ITT is reserved, but Immediate Bit is"
" not set, protocol error.\n");
+ if (!cmd)
+ return iscsit_add_reject(conn, ISCSI_REASON_PROTOCOL_ERROR,
+ (unsigned char *)hdr);
+
return iscsit_reject_cmd(cmd, ISCSI_REASON_PROTOCOL_ERROR,
(unsigned char *)hdr);
}
" greater than MaxXmitDataSegmentLength: %u, protocol"
" error.\n", payload_length,
conn->conn_ops->MaxXmitDataSegmentLength);
+ if (!cmd)
+ return iscsit_add_reject(conn, ISCSI_REASON_PROTOCOL_ERROR,
+ (unsigned char *)hdr);
+
return iscsit_reject_cmd(cmd, ISCSI_REASON_PROTOCOL_ERROR,
(unsigned char *)hdr);
}
bool inaddr_any = iscsit_check_inaddr_any(np);
len = sprintf(buf, "TargetAddress="
- "%s%s%s:%hu,%hu",
- (np->np_sockaddr.ss_family == AF_INET6) ?
- "[" : "", (inaddr_any == false) ?
+ "%s:%hu,%hu",
+ (inaddr_any == false) ?
np->np_ip : conn->local_ip,
- (np->np_sockaddr.ss_family == AF_INET6) ?
- "]" : "", (inaddr_any == false) ?
+ (inaddr_any == false) ?
np->np_port : conn->local_port,
tpg->tpgt);
len += 1;
/*******************************************************************************
* This file contains the login functions used by the iSCSI Target driver.
*
- * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
- *
- * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
+ * (c) Copyright 2007-2013 Datera, Inc.
*
* Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
*
pr_err("Unable to allocate memory for struct iscsi_login.\n");
return NULL;
}
+ conn->login = login;
login->conn = conn;
login->first_request = 1;
ISCSI_LOGIN_STATUS_NO_RESOURCES);
return -1;
}
- rc = strict_strtoul(param->value, 0, &mrdsl);
+ rc = kstrtoul(param->value, 0, &mrdsl);
if (rc < 0) {
iscsit_tx_login_rsp(conn, ISCSI_STATUS_CLS_TARGET_ERR,
ISCSI_LOGIN_STATUS_NO_RESOURCES);
iscsit_start_nopin_timer(conn);
}
- static int iscsi_post_login_handler(
+ int iscsi_post_login_handler(
struct iscsi_np *np,
struct iscsi_conn *conn,
u8 zero_tsih)
struct __kernel_sockaddr_storage *sockaddr)
{
struct socket *sock = NULL;
- int backlog = 5, ret, opt = 0, len;
+ int backlog = ISCSIT_TCP_BACKLOG, ret, opt = 0, len;
switch (np->np_network_transport) {
case ISCSI_TCP:
rc = conn->sock->ops->getname(conn->sock,
(struct sockaddr *)&sock_in6, &err, 1);
if (!rc) {
- snprintf(conn->login_ip, sizeof(conn->login_ip), "%pI6c",
- &sock_in6.sin6_addr.in6_u);
+ if (!ipv6_addr_v4mapped(&sock_in6.sin6_addr))
+ snprintf(conn->login_ip, sizeof(conn->login_ip), "[%pI6c]",
+ &sock_in6.sin6_addr.in6_u);
+ else
+ snprintf(conn->login_ip, sizeof(conn->login_ip), "%pI4",
+ &sock_in6.sin6_addr.s6_addr32[3]);
conn->login_port = ntohs(sock_in6.sin6_port);
}
rc = conn->sock->ops->getname(conn->sock,
(struct sockaddr *)&sock_in6, &err, 0);
if (!rc) {
- snprintf(conn->local_ip, sizeof(conn->local_ip), "%pI6c",
- &sock_in6.sin6_addr.in6_u);
+ if (!ipv6_addr_v4mapped(&sock_in6.sin6_addr))
+ snprintf(conn->local_ip, sizeof(conn->local_ip), "[%pI6c]",
+ &sock_in6.sin6_addr.in6_u);
+ else
+ snprintf(conn->local_ip, sizeof(conn->local_ip), "%pI4",
+ &sock_in6.sin6_addr.s6_addr32[3]);
conn->local_port = ntohs(sock_in6.sin6_port);
}
} else {
return 0;
}
+ void iscsi_target_login_sess_out(struct iscsi_conn *conn,
+ struct iscsi_np *np, bool zero_tsih, bool new_sess)
+ {
+ if (new_sess == false)
+ goto old_sess_out;
+
+ pr_err("iSCSI Login negotiation failed.\n");
+ iscsit_collect_login_stats(conn, ISCSI_STATUS_CLS_INITIATOR_ERR,
+ ISCSI_LOGIN_STATUS_INIT_ERR);
+ if (!zero_tsih || !conn->sess)
+ goto old_sess_out;
+ if (conn->sess->se_sess)
+ transport_free_session(conn->sess->se_sess);
+ if (conn->sess->session_index != 0) {
+ spin_lock_bh(&sess_idr_lock);
+ idr_remove(&sess_idr, conn->sess->session_index);
+ spin_unlock_bh(&sess_idr_lock);
+ }
+ kfree(conn->sess->sess_ops);
+ kfree(conn->sess);
+
+ old_sess_out:
+ iscsi_stop_login_thread_timer(np);
+ /*
+ * If login negotiation fails check if the Time2Retain timer
+ * needs to be restarted.
+ */
+ if (!zero_tsih && conn->sess) {
+ spin_lock_bh(&conn->sess->conn_lock);
+ if (conn->sess->session_state == TARG_SESS_STATE_FAILED) {
+ struct se_portal_group *se_tpg =
+ &ISCSI_TPG_C(conn)->tpg_se_tpg;
+
+ atomic_set(&conn->sess->session_continuation, 0);
+ spin_unlock_bh(&conn->sess->conn_lock);
+ spin_lock_bh(&se_tpg->session_lock);
+ iscsit_start_time2retain_handler(conn->sess);
+ spin_unlock_bh(&se_tpg->session_lock);
+ } else
+ spin_unlock_bh(&conn->sess->conn_lock);
+ iscsit_dec_session_usage_count(conn->sess);
+ }
+
+ if (!IS_ERR(conn->conn_rx_hash.tfm))
+ crypto_free_hash(conn->conn_rx_hash.tfm);
+ if (!IS_ERR(conn->conn_tx_hash.tfm))
+ crypto_free_hash(conn->conn_tx_hash.tfm);
+
+ if (conn->conn_cpumask)
+ free_cpumask_var(conn->conn_cpumask);
+
+ kfree(conn->conn_ops);
+
+ if (conn->param_list) {
+ iscsi_release_param_list(conn->param_list);
+ conn->param_list = NULL;
+ }
+ iscsi_target_nego_release(conn);
+
+ if (conn->sock) {
+ sock_release(conn->sock);
+ conn->sock = NULL;
+ }
+
+ if (conn->conn_transport->iscsit_free_conn)
+ conn->conn_transport->iscsit_free_conn(conn);
+
+ iscsit_put_transport(conn->conn_transport);
+ kfree(conn);
+ }
+
static int __iscsi_target_login_thread(struct iscsi_np *np)
{
u8 *buffer, zero_tsih = 0;
struct iscsi_login *login;
struct iscsi_portal_group *tpg = NULL;
struct iscsi_login_req *pdu;
+ struct iscsi_tpg_np *tpg_np;
+ bool new_sess = false;
flush_signals(current);
if (np->np_thread_state == ISCSI_NP_THREAD_RESET) {
spin_unlock_bh(&np->np_thread_lock);
complete(&np->np_restart_comp);
- if (ret == -ENODEV) {
- iscsit_put_transport(conn->conn_transport);
- kfree(conn);
- conn = NULL;
+ iscsit_put_transport(conn->conn_transport);
+ kfree(conn);
+ conn = NULL;
+ if (ret == -ENODEV)
goto out;
- }
/* Get another socket */
return 1;
}
tpg = conn->tpg;
goto new_sess_out;
}
+ login->zero_tsih = zero_tsih;
tpg = conn->tpg;
if (!tpg) {
goto old_sess_out;
}
- if (iscsi_target_start_negotiation(login, conn) < 0)
+ ret = iscsi_target_start_negotiation(login, conn);
+ if (ret < 0)
goto new_sess_out;
if (!conn->sess) {
if (signal_pending(current))
goto new_sess_out;
- ret = iscsi_post_login_handler(np, conn, zero_tsih);
+ if (ret == 1) {
+ tpg_np = conn->tpg_np;
- if (ret < 0)
- goto new_sess_out;
+ ret = iscsi_post_login_handler(np, conn, zero_tsih);
+ if (ret < 0)
+ goto new_sess_out;
+
+ iscsit_deaccess_np(np, tpg, tpg_np);
+ }
- iscsit_deaccess_np(np, tpg);
tpg = NULL;
+ tpg_np = NULL;
/* Get another socket */
return 1;
new_sess_out:
- pr_err("iSCSI Login negotiation failed.\n");
- iscsit_collect_login_stats(conn, ISCSI_STATUS_CLS_INITIATOR_ERR,
- ISCSI_LOGIN_STATUS_INIT_ERR);
- if (!zero_tsih || !conn->sess)
- goto old_sess_out;
- if (conn->sess->se_sess)
- transport_free_session(conn->sess->se_sess);
- if (conn->sess->session_index != 0) {
- spin_lock_bh(&sess_idr_lock);
- idr_remove(&sess_idr, conn->sess->session_index);
- spin_unlock_bh(&sess_idr_lock);
- }
- kfree(conn->sess->sess_ops);
- kfree(conn->sess);
+ new_sess = true;
old_sess_out:
- iscsi_stop_login_thread_timer(np);
- /*
- * If login negotiation fails check if the Time2Retain timer
- * needs to be restarted.
- */
- if (!zero_tsih && conn->sess) {
- spin_lock_bh(&conn->sess->conn_lock);
- if (conn->sess->session_state == TARG_SESS_STATE_FAILED) {
- struct se_portal_group *se_tpg =
- &ISCSI_TPG_C(conn)->tpg_se_tpg;
-
- atomic_set(&conn->sess->session_continuation, 0);
- spin_unlock_bh(&conn->sess->conn_lock);
- spin_lock_bh(&se_tpg->session_lock);
- iscsit_start_time2retain_handler(conn->sess);
- spin_unlock_bh(&se_tpg->session_lock);
- } else
- spin_unlock_bh(&conn->sess->conn_lock);
- iscsit_dec_session_usage_count(conn->sess);
- }
-
- if (!IS_ERR(conn->conn_rx_hash.tfm))
- crypto_free_hash(conn->conn_rx_hash.tfm);
- if (!IS_ERR(conn->conn_tx_hash.tfm))
- crypto_free_hash(conn->conn_tx_hash.tfm);
-
- if (conn->conn_cpumask)
- free_cpumask_var(conn->conn_cpumask);
-
- kfree(conn->conn_ops);
-
- if (conn->param_list) {
- iscsi_release_param_list(conn->param_list);
- conn->param_list = NULL;
- }
- iscsi_target_nego_release(conn);
-
- if (conn->sock) {
- sock_release(conn->sock);
- conn->sock = NULL;
- }
-
- if (conn->conn_transport->iscsit_free_conn)
- conn->conn_transport->iscsit_free_conn(conn);
-
- iscsit_put_transport(conn->conn_transport);
-
- kfree(conn);
+ tpg_np = conn->tpg_np;
+ iscsi_target_login_sess_out(conn, np, zero_tsih, new_sess);
+ new_sess = false;
if (tpg) {
- iscsit_deaccess_np(np, tpg);
+ iscsit_deaccess_np(np, tpg, tpg_np);
tpg = NULL;
+ tpg_np = NULL;
}
out:
/*
* SCSI Primary Commands (SPC) parsing and emulation.
*
- * (c) Copyright 2002-2012 RisingTide Systems LLC.
+ * (c) Copyright 2002-2013 Datera, Inc.
*
* Nicholas A. Bellinger <nab@kernel.org>
*
#include "target_core_alua.h"
#include "target_core_pr.h"
#include "target_core_ua.h"
-
+ #include "target_core_xcopy.h"
static void spc_fill_alua_data(struct se_port *port, unsigned char *buf)
{
*/
spc_fill_alua_data(lun->lun_sep, buf);
+ /*
+ * Set Third-Party Copy (3PC) bit to indicate support for EXTENDED_COPY
+ */
+ if (dev->dev_attrib.emulate_3pc)
+ buf[5] |= 0x8;
+
buf[7] = 0x2; /* CmdQue=1 */
- snprintf(&buf[8], 8, "LIO-ORG");
- snprintf(&buf[16], 16, "%s", dev->t10_wwn.model);
- snprintf(&buf[32], 4, "%s", dev->t10_wwn.revision);
+ memcpy(&buf[8], "LIO-ORG ", 8);
+ memset(&buf[16], 0x20, 16);
+ memcpy(&buf[16], dev->t10_wwn.model,
+ min_t(size_t, strlen(dev->t10_wwn.model), 16));
+ memcpy(&buf[32], dev->t10_wwn.revision,
+ min_t(size_t, strlen(dev->t10_wwn.revision), 4));
buf[4] = 31; /* Set additional length to 31 */
return 0;
return 0;
}
- static void spc_parse_naa_6h_vendor_specific(struct se_device *dev,
- unsigned char *buf)
+ void spc_parse_naa_6h_vendor_specific(struct se_device *dev,
+ unsigned char *buf)
{
unsigned char *p = &dev->t10_wwn.unit_serial[0];
int cnt;
/* Set WSNZ to 1 */
buf[4] = 0x01;
+ /*
+ * Set MAXIMUM COMPARE AND WRITE LENGTH
+ */
+ if (dev->dev_attrib.emulate_caw)
+ buf[5] = 0x01;
/*
* Set OPTIMAL TRANSFER LENGTH GRANULARITY
*size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9];
break;
case EXTENDED_COPY:
- case READ_ATTRIBUTE:
+ *size = get_unaligned_be32(&cdb[10]);
+ cmd->execute_cmd = target_do_xcopy;
+ break;
case RECEIVE_COPY_RESULTS:
+ *size = get_unaligned_be32(&cdb[10]);
+ cmd->execute_cmd = target_do_receive_copy_results;
+ break;
+ case READ_ATTRIBUTE:
case WRITE_ATTRIBUTE:
*size = (cdb[10] << 24) | (cdb[11] << 16) |
(cdb[12] << 8) | cdb[13];
*
* This file contains the Generic Target Engine Core.
*
- * (c) Copyright 2002-2012 RisingTide Systems LLC.
+ * (c) Copyright 2002-2013 Datera, Inc.
*
* Nicholas A. Bellinger <nab@kernel.org>
*
static void transport_complete_task_attr(struct se_cmd *cmd);
static void transport_handle_queue_full(struct se_cmd *cmd,
struct se_device *dev);
- static int transport_generic_get_mem(struct se_cmd *cmd);
static int transport_put_cmd(struct se_cmd *cmd);
static void target_complete_ok_work(struct work_struct *work);
}
EXPORT_SYMBOL(transport_init_session);
+ int transport_alloc_session_tags(struct se_session *se_sess,
+ unsigned int tag_num, unsigned int tag_size)
+ {
+ int rc;
+
+ se_sess->sess_cmd_map = kzalloc(tag_num * tag_size, GFP_KERNEL);
+ if (!se_sess->sess_cmd_map) {
+ pr_err("Unable to allocate se_sess->sess_cmd_map\n");
+ return -ENOMEM;
+ }
+
+ rc = percpu_ida_init(&se_sess->sess_tag_pool, tag_num);
+ if (rc < 0) {
+ pr_err("Unable to init se_sess->sess_tag_pool,"
+ " tag_num: %u\n", tag_num);
+ kfree(se_sess->sess_cmd_map);
+ se_sess->sess_cmd_map = NULL;
+ return -ENOMEM;
+ }
+
+ return 0;
+ }
+ EXPORT_SYMBOL(transport_alloc_session_tags);
+
+ struct se_session *transport_init_session_tags(unsigned int tag_num,
+ unsigned int tag_size)
+ {
+ struct se_session *se_sess;
+ int rc;
+
+ se_sess = transport_init_session();
+ if (IS_ERR(se_sess))
+ return se_sess;
+
+ rc = transport_alloc_session_tags(se_sess, tag_num, tag_size);
+ if (rc < 0) {
+ transport_free_session(se_sess);
+ return ERR_PTR(-ENOMEM);
+ }
+
+ return se_sess;
+ }
+ EXPORT_SYMBOL(transport_init_session_tags);
+
/*
* Called with spin_lock_irqsave(&struct se_portal_group->session_lock called.
*/
void transport_free_session(struct se_session *se_sess)
{
+ if (se_sess->sess_cmd_map) {
+ percpu_ida_destroy(&se_sess->sess_tag_pool);
+ kfree(se_sess->sess_cmd_map);
+ }
kmem_cache_free(se_sess_cache, se_sess);
}
EXPORT_SYMBOL(transport_free_session);
}
EXPORT_SYMBOL(transport_handle_cdb_direct);
- static sense_reason_t
+ sense_reason_t
transport_generic_map_mem_to_cmd(struct se_cmd *cmd, struct scatterlist *sgl,
u32 sgl_count, struct scatterlist *sgl_bidi, u32 sgl_bidi_count)
{
* For SAM Task Attribute emulation for failed struct se_cmd
*/
transport_complete_task_attr(cmd);
+ /*
+ * Handle special case for COMPARE_AND_WRITE failure, where the
+ * callback is expected to drop the per device ->caw_mutex.
+ */
+ if ((cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE) &&
+ cmd->transport_complete_callback)
+ cmd->transport_complete_callback(cmd);
switch (sense_reason) {
case TCM_NON_EXISTENT_LUN:
}
EXPORT_SYMBOL(transport_generic_request_failure);
- static void __target_execute_cmd(struct se_cmd *cmd)
+ void __target_execute_cmd(struct se_cmd *cmd)
{
sense_reason_t ret;
ret = cmd->se_tfo->queue_data_in(cmd);
break;
case DMA_TO_DEVICE:
- if (cmd->t_bidi_data_sg) {
+ if (cmd->se_cmd_flags & SCF_BIDI) {
ret = cmd->se_tfo->queue_data_in(cmd);
if (ret < 0)
break;
}
/*
* Check for a callback, used by amongst other things
- * XDWRITE_READ_10 emulation.
+ * XDWRITE_READ_10 and COMPARE_AND_WRITE emulation.
*/
- if (cmd->transport_complete_callback)
- cmd->transport_complete_callback(cmd);
+ if (cmd->transport_complete_callback) {
+ sense_reason_t rc;
+
+ rc = cmd->transport_complete_callback(cmd);
+ if (!rc && !(cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE_POST)) {
+ return;
+ } else if (rc) {
+ ret = transport_send_check_condition_and_sense(cmd,
+ rc, 0);
+ if (ret == -EAGAIN || ret == -ENOMEM)
+ goto queue_full;
+
+ transport_lun_remove_cmd(cmd);
+ transport_cmd_check_stop_to_fabric(cmd);
+ return;
+ }
+ }
switch (cmd->data_direction) {
case DMA_FROM_DEVICE:
/*
* Check if we need to send READ payload for BIDI-COMMAND
*/
- if (cmd->t_bidi_data_sg) {
+ if (cmd->se_cmd_flags & SCF_BIDI) {
spin_lock(&cmd->se_lun->lun_sep_lock);
if (cmd->se_lun->lun_sep) {
cmd->se_lun->lun_sep->sep_stats.tx_data_octets +=
kfree(sgl);
}
+ static inline void transport_reset_sgl_orig(struct se_cmd *cmd)
+ {
+ /*
+ * Check for saved t_data_sg that may be used for COMPARE_AND_WRITE
+ * emulation, and free + reset pointers if necessary..
+ */
+ if (!cmd->t_data_sg_orig)
+ return;
+
+ kfree(cmd->t_data_sg);
+ cmd->t_data_sg = cmd->t_data_sg_orig;
+ cmd->t_data_sg_orig = NULL;
+ cmd->t_data_nents = cmd->t_data_nents_orig;
+ cmd->t_data_nents_orig = 0;
+ }
+
static inline void transport_free_pages(struct se_cmd *cmd)
{
- if (cmd->se_cmd_flags & SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC)
+ if (cmd->se_cmd_flags & SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC) {
+ transport_reset_sgl_orig(cmd);
return;
+ }
+ transport_reset_sgl_orig(cmd);
transport_free_sgl(cmd->t_data_sg, cmd->t_data_nents);
cmd->t_data_sg = NULL;
}
EXPORT_SYMBOL(transport_kunmap_data_sg);
- static int
- transport_generic_get_mem(struct se_cmd *cmd)
+ int
+ target_alloc_sgl(struct scatterlist **sgl, unsigned int *nents, u32 length,
+ bool zero_page)
{
- u32 length = cmd->data_length;
- unsigned int nents;
+ struct scatterlist *sg;
struct page *page;
- gfp_t zero_flag;
+ gfp_t zero_flag = (zero_page) ? __GFP_ZERO : 0;
+ unsigned int nent;
int i = 0;
- nents = DIV_ROUND_UP(length, PAGE_SIZE);
- cmd->t_data_sg = kmalloc(sizeof(struct scatterlist) * nents, GFP_KERNEL);
- if (!cmd->t_data_sg)
+ nent = DIV_ROUND_UP(length, PAGE_SIZE);
+ sg = kmalloc(sizeof(struct scatterlist) * nent, GFP_KERNEL);
+ if (!sg)
return -ENOMEM;
- cmd->t_data_nents = nents;
- sg_init_table(cmd->t_data_sg, nents);
-
- zero_flag = cmd->se_cmd_flags & SCF_SCSI_DATA_CDB ? 0 : __GFP_ZERO;
+ sg_init_table(sg, nent);
while (length) {
u32 page_len = min_t(u32, length, PAGE_SIZE);
if (!page)
goto out;
- sg_set_page(&cmd->t_data_sg[i], page, page_len, 0);
+ sg_set_page(&sg[i], page, page_len, 0);
length -= page_len;
i++;
}
+ *sgl = sg;
+ *nents = nent;
return 0;
out:
while (i > 0) {
i--;
- __free_page(sg_page(&cmd->t_data_sg[i]));
+ __free_page(sg_page(&sg[i]));
}
- kfree(cmd->t_data_sg);
- cmd->t_data_sg = NULL;
+ kfree(sg);
return -ENOMEM;
}
*/
if (!(cmd->se_cmd_flags & SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC) &&
cmd->data_length) {
- ret = transport_generic_get_mem(cmd);
+ bool zero_flag = !(cmd->se_cmd_flags & SCF_SCSI_DATA_CDB);
+
+ if ((cmd->se_cmd_flags & SCF_BIDI) ||
+ (cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE)) {
+ u32 bidi_length;
+
+ if (cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE)
+ bidi_length = cmd->t_task_nolb *
+ cmd->se_dev->dev_attrib.block_size;
+ else
+ bidi_length = cmd->data_length;
+
+ ret = target_alloc_sgl(&cmd->t_bidi_data_sg,
+ &cmd->t_bidi_data_nents,
+ bidi_length, zero_flag);
+ if (ret < 0)
+ return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
+ }
+
+ ret = target_alloc_sgl(&cmd->t_data_sg, &cmd->t_data_nents,
+ cmd->data_length, zero_flag);
if (ret < 0)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
}
int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks)
{
+ unsigned long flags;
int ret = 0;
if (!(cmd->se_cmd_flags & SCF_SE_LUN_CMD)) {
} else {
if (wait_for_tasks)
transport_wait_for_tasks(cmd);
+ /*
+ * Handle WRITE failure case where transport_generic_new_cmd()
+ * has already added se_cmd to state_list, but fabric has
+ * failed command before I/O submission.
+ */
+ if (cmd->state_active) {
+ spin_lock_irqsave(&cmd->t_state_lock, flags);
+ target_remove_from_state_list(cmd);
+ spin_unlock_irqrestore(&cmd->t_state_lock, flags);
+ }
if (cmd->se_lun)
transport_lun_remove_cmd(cmd);
buffer[SPC_ASC_KEY_OFFSET] = asc;
buffer[SPC_ASCQ_KEY_OFFSET] = ascq;
break;
+ case TCM_MISCOMPARE_VERIFY:
+ /* CURRENT ERROR */
+ buffer[0] = 0x70;
+ buffer[SPC_ADD_SENSE_LEN_OFFSET] = 10;
+ buffer[SPC_SENSE_KEY_OFFSET] = MISCOMPARE;
+ /* MISCOMPARE DURING VERIFY OPERATION */
+ buffer[SPC_ASC_KEY_OFFSET] = 0x1d;
+ buffer[SPC_ASCQ_KEY_OFFSET] = 0x00;
+ break;
case TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE:
default:
/* CURRENT ERROR */
#define ACCESS_CONTROL_IN 0x86
#define ACCESS_CONTROL_OUT 0x87
#define READ_16 0x88
+ #define COMPARE_AND_WRITE 0x89
#define WRITE_16 0x8a
#define READ_ATTRIBUTE 0x8c
#define WRITE_ATTRIBUTE 0x8d
* other paths */
#define DID_NEXUS_FAILURE 0x11 /* Permanent nexus failure, retry on other
* paths might yield different results */
+#define DID_ALLOC_FAILURE 0x12 /* Space allocation on the device failed */
+#define DID_MEDIUM_ERROR 0x13 /* Medium error */
#define DRIVER_OK 0x00 /* Driver status */
/*
#define TIMEOUT_ERROR 0x2007
#define SCSI_RETURN_NOT_HANDLED 0x2008
#define FAST_IO_FAIL 0x2009
-#define TARGET_ERROR 0x200A
/*
* Midlevel queue return values.
sha1.o md5.o irq_regs.o reciprocal_div.o argv_split.o \
proportions.o flex_proportions.o prio_heap.o ratelimit.o show_mem.o \
is_single_threaded.o plist.o decompress.o kobject_uevent.o \
- earlycpio.o percpu-refcount.o
+ earlycpio.o percpu-refcount.o percpu_ida.o
obj-$(CONFIG_ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS) += usercopy.o
lib-$(CONFIG_MMU) += ioremap.o
lib-$(CONFIG_SMP) += cpumask.o
lib-y += kobject.o klist.o
+obj-y += lockref.o
obj-y += bcd.o div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
bust_spinlocks.o hexdump.o kasprintf.o bitmap.o scatterlist.o \
gcd.o lcm.o list_sort.o uuid.o flex_array.o iovec.o clz_ctz.o \
- bsearch.o find_last_bit.o find_next_bit.o llist.o memweight.o kfifo.o
+ bsearch.o find_last_bit.o find_next_bit.o llist.o memweight.o kfifo.o \
+ percpu_ida.o
obj-y += string_helpers.o
obj-$(CONFIG_TEST_STRING_HELPERS) += test-string_helpers.o
obj-y += kstrtox.o
projects / platform / adaptation / renesas_rcar / renesas_kernel.git / commitdiff