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Message-Id: <1299208901-32133-4-git-send-email-nab@linux-iscsi.org>
Date: Thu, 3 Mar 2011 19:21:41 -0800
From: "Nicholas A. Bellinger" <nab@...ux-iscsi.org>
To: linux-scsi <linux-scsi@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
Madhu Iyengar <madhu.iyengar@...gic.com>,
Andrew Vasquez <andrew.vasquez@...gic.com>
Cc: James Bottomley <James.Bottomley@...senPartnership.com>,
Christoph Hellwig <hch@....de>,
Mike Christie <michaelc@...wisc.edu>,
Hannes Reinecke <hare@...e.de>, Ruediger Oertel <ro@...e.de>,
Nicholas Bellinger <nab@...ingtidesystems.com>
Subject: [RFC-v2 3/3] tcm_qla2xxx: Add HW target mode I/O, control and TMR path code
From: Nicholas Bellinger <nab@...ingtidesystems.com>
This patch adds initial support for functioning READ and WRITE I/O into
tcm_qla2xxx fabric module code and TCM backends using new qla_target.c
LLD logic introduced into commit 8981ac5d and commit 59e989480. This includes
support for demo-mode TPG access and explict NodeACLs via configfs using
tcm_qla2xxx_setup_nacl_from_rport() from libfc struct fc_host->rports.
This patch also adds support for using tcm_qla2xxx_lport->lport_fcport_map
and ->lport_loopid_map to track struct se_node_acl pointers for individual
24-bit Port ID and 16-bit Loop ID values for qla_target_template
->find_sess_by_s_id() and ->find_sess_by_loop_id() used in a number of
locations into the primary I/O dispatch logic in qla_target.c LLD code.
The main piece to setup a FC Nexus is done in tcm_qla2xxx_check_initiator_node_acl(),
which calls tcm_qla2xxx_set_sess_by_[s_id,loop_id]() to setup our
lport->lport_fcport_map and lport_loopid_map pointers respectively, and register
the new nexus with TCM via __transport_register_session(). The FC nexus release and
reset path is done via a qla_target.c LLD callback to tcm_qla2xxx_free_session()
which calls transport_deregister_session_configfs(), then to clear the
tcm_qla2xxx_set_sess_by_[s_id,loop_id]() struct se_nacl pointer, and finally
transport_deregister_session() to release our struct se_session.
For the functioning non NPIV case in tcm_qla2xxx_configfs.c:tcm_qla2xxx_make_tpg()
we use a single lport->tpg_1 pointer, and only allow a single scsi_qla_host_t *
per struct tcm_qla2xxx_lport. The NPIV configfs code is still a WIP and is using
NOPs for in tcm_qla2xxx_configfs.c at this point.
Signed-off-by: Nicholas A. Bellinger <nab@...ingtidesystems.com>
---
drivers/target/Kconfig | 1 +
drivers/target/Makefile | 2 +
drivers/target/tcm_qla2xxx/Kconfig | 7 +
drivers/target/tcm_qla2xxx/Makefile | 6 +
drivers/target/tcm_qla2xxx/tcm_qla2xxx_base.h | 102 ++
drivers/target/tcm_qla2xxx/tcm_qla2xxx_configfs.c | 1439 +++++++++++++++++++++
drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c | 853 ++++++++++++
drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.h | 53 +
8 files changed, 2463 insertions(+), 0 deletions(-)
create mode 100644 drivers/target/tcm_qla2xxx/Kconfig
create mode 100644 drivers/target/tcm_qla2xxx/Makefile
create mode 100644 drivers/target/tcm_qla2xxx/tcm_qla2xxx_base.h
create mode 100644 drivers/target/tcm_qla2xxx/tcm_qla2xxx_configfs.c
create mode 100644 drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c
create mode 100644 drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.h
diff --git a/drivers/target/Kconfig b/drivers/target/Kconfig
index 437069f..dc860aa 100644
--- a/drivers/target/Kconfig
+++ b/drivers/target/Kconfig
@@ -39,5 +39,6 @@ config TCM_STGT
source "drivers/target/tcm_loop/Kconfig"
source "drivers/target/lio-target/Kconfig"
source "drivers/target/tcm_fc/Kconfig"
+source "drivers/target/tcm_qla2xxx/Kconfig"
endif
diff --git a/drivers/target/Makefile b/drivers/target/Makefile
index 12c6090..d0ef2fa 100644
--- a/drivers/target/Makefile
+++ b/drivers/target/Makefile
@@ -28,3 +28,5 @@ obj-$(CONFIG_LIO_TARGET) += lio-target/
obj-$(CONFIG_TCM_LOOP_FABRIC) += tcm_loop/
obj-$(CONFIG_TCM_FC) += tcm_fc/
+obj-$(CONFIG_TCM_QLA2XXX) += tcm_qla2xxx/
+
diff --git a/drivers/target/tcm_qla2xxx/Kconfig b/drivers/target/tcm_qla2xxx/Kconfig
new file mode 100644
index 0000000..3f6d8c8
--- /dev/null
+++ b/drivers/target/tcm_qla2xxx/Kconfig
@@ -0,0 +1,7 @@
+config TCM_QLA2XXX
+ tristate "TCM_QLA2XXX fabric module for Qlogic 2xxx series target mode HBAs"
+ select LIBFC
+ select SCSI_QLA_FC
+ default n
+ ---help---
+ Say Y here to enable the TCM_QLA2XXX fabric module for Qlogic 2xxx series target mode HBAs
diff --git a/drivers/target/tcm_qla2xxx/Makefile b/drivers/target/tcm_qla2xxx/Makefile
new file mode 100644
index 0000000..2b8120f
--- /dev/null
+++ b/drivers/target/tcm_qla2xxx/Makefile
@@ -0,0 +1,6 @@
+EXTRA_CFLAGS += -I$(srctree)/drivers/scsi/qla2xxx/
+
+tcm_qla2xxx-objs := tcm_qla2xxx_fabric.o \
+ tcm_qla2xxx_configfs.o \
+
+obj-$(CONFIG_TCM_QLA2XXX) += tcm_qla2xxx.o
diff --git a/drivers/target/tcm_qla2xxx/tcm_qla2xxx_base.h b/drivers/target/tcm_qla2xxx/tcm_qla2xxx_base.h
new file mode 100644
index 0000000..a89a567
--- /dev/null
+++ b/drivers/target/tcm_qla2xxx/tcm_qla2xxx_base.h
@@ -0,0 +1,102 @@
+#include <target/target_core_base.h>
+
+#define TCM_QLA2XXX_VERSION "v0.1"
+/* length of ASCII WWPNs including pad */
+#define TCM_QLA2XXX_NAMELEN 32
+/* lenth of ASCII NPIV 'WWPN+WWNN' including pad */
+#define TCM_QLA2XXX_NPIV_NAMELEN 66
+
+#include "qla_target.h"
+
+#if 0
+#define DEBUG_QLA_TGT_SESS_MAP(x...) printk(KERN_INFO x)
+#else
+#define DEBUG_QLA_TGT_SESS_MAP(x...)
+#endif
+
+struct tcm_qla2xxx_nacl {
+ /* From libfc struct fc_rport->port_id */
+ u16 nport_id;
+ /* Binary World Wide unique Node Name for remote FC Initiator Nport */
+ u64 nport_wwnn;
+ /* ASCII formatted WWPN for FC Initiator Nport */
+ char nport_name[TCM_QLA2XXX_NAMELEN];
+ /* Pointer to qla_tgt_sess */
+ struct qla_tgt_sess *qla_tgt_sess;
+ /* Pointer to TCM FC nexus */
+ struct se_session *nport_nexus;
+ /* Returned by tcm_qla2xxx_make_nodeacl() */
+ struct se_node_acl se_node_acl;
+};
+
+struct tcm_qla2xxx_tpg_attrib {
+ int generate_node_acls;
+ int cache_dynamic_acls;
+ int demo_mode_write_protect;
+ int prod_mode_write_protect;
+};
+
+struct tcm_qla2xxx_tpg {
+ /* FC lport target portal group tag for TCM */
+ u16 lport_tpgt;
+ /* Atomic bit to determine TPG active status */
+ atomic_t lport_tpg_enabled;
+ /* Pointer back to tcm_qla2xxx_lport */
+ struct tcm_qla2xxx_lport *lport;
+ /* Used by tcm_qla2xxx_tpg_attrib_cit */
+ struct tcm_qla2xxx_tpg_attrib tpg_attrib;
+ /* Returned by tcm_qla2xxx_make_tpg() */
+ struct se_portal_group se_tpg;
+};
+
+#define QLA_TPG_ATTRIB(tpg) (&(tpg)->tpg_attrib)
+
+/*
+ * Used for the 24-bit lport->lport_fcport_map;
+ */
+struct tcm_qla2xxx_fc_al_pa {
+ struct se_node_acl *se_nacl;
+};
+
+struct tcm_qla2xxx_fc_area {
+ struct tcm_qla2xxx_fc_al_pa al_pas[256];
+};
+
+struct tcm_qla2xxx_fc_domain {
+ struct tcm_qla2xxx_fc_area areas[256];
+};
+
+struct tcm_qla2xxx_fc_loopid {
+ struct se_node_acl *se_nacl;
+};
+
+struct tcm_qla2xxx_lport {
+ /* SCSI protocol the lport is providing */
+ u8 lport_proto_id;
+ /* Binary World Wide unique Port Name for FC Target Lport */
+ u64 lport_wwpn;
+ /* Binary World Wide unique Port Name for FC NPIV Target Lport */
+ u64 lport_npiv_wwpn;
+ /* Binary World Wide unique Node Name for FC NPIV Target Lport */
+ u64 lport_npiv_wwnn;
+ /* ASCII formatted WWPN for FC Target Lport */
+ char lport_name[TCM_QLA2XXX_NAMELEN];
+ /* ASCII formatted WWPN+WWNN for NPIV FC Target Lport */
+ char lport_npiv_name[TCM_QLA2XXX_NPIV_NAMELEN];
+ /* vmalloc'ed memory for fc_port pointers in 24-bit FC Port ID space */
+ char *lport_fcport_map;
+ /* vmalloc-ed memory for fc_port pointers for 16-bit FC loop ID */
+ char *lport_loopid_map;
+ /* Pointer to struct scsi_qla_host from qla2xxx LLD */
+ struct scsi_qla_host *qla_vha;
+ /* Pointer to struct scsi_qla_host for NPIV VP from qla2xxx LLD */
+ struct scsi_qla_host *qla_npiv_vp;
+ /* Pointer to struct qla_tgt pointer */
+ struct qla_tgt lport_qla_tgt;
+ /* Pointer to struct fc_vport for NPIV vport from libfc */
+ struct fc_vport *npiv_vport;
+ /* Pointer to TPG=1 for non NPIV mode */
+ struct tcm_qla2xxx_tpg *tpg_1;
+ /* Returned by tcm_qla2xxx_make_lport() */
+ struct se_wwn lport_wwn;
+};
diff --git a/drivers/target/tcm_qla2xxx/tcm_qla2xxx_configfs.c b/drivers/target/tcm_qla2xxx/tcm_qla2xxx_configfs.c
new file mode 100644
index 0000000..88a361cf
--- /dev/null
+++ b/drivers/target/tcm_qla2xxx/tcm_qla2xxx_configfs.c
@@ -0,0 +1,1439 @@
+/*******************************************************************************
+ * This file contains TCM QLA2XXX fabric module implementation using
+ * v4 configfs fabric infrastructure for QLogic target mode HBAs
+ *
+ * © Copyright 2010-2011 RisingTide Systems LLC.
+ *
+ * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
+ *
+ * Author: Nicholas A. Bellinger <nab@...ingtidesystems.com>
+ *
+ * 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 <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/version.h>
+#include <generated/utsrelease.h>
+#include <linux/utsname.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/kthread.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/configfs.h>
+#include <linux/ctype.h>
+#include <asm/unaligned.h>
+
+#include <target/target_core_base.h>
+#include <target/target_core_transport.h>
+#include <target/target_core_fabric_ops.h>
+#include <target/target_core_fabric_configfs.h>
+#include <target/target_core_fabric_lib.h>
+#include <target/target_core_device.h>
+#include <target/target_core_tpg.h>
+#include <target/target_core_configfs.h>
+#include <target/target_core_base.h>
+#include <target/configfs_macros.h>
+
+#include "tcm_qla2xxx_base.h"
+#include "tcm_qla2xxx_fabric.h"
+
+#include <qla_def.h>
+
+/* Local pointer to allocated TCM configfs fabric module */
+struct target_fabric_configfs *tcm_qla2xxx_fabric_configfs;
+struct target_fabric_configfs *tcm_qla2xxx_npiv_fabric_configfs;
+
+static int tcm_qla2xxx_setup_nacl_from_rport(
+ struct se_portal_group *se_tpg,
+ struct se_node_acl *se_nacl,
+ struct tcm_qla2xxx_lport *lport,
+ struct tcm_qla2xxx_nacl *nacl,
+ u64 rport_wwnn)
+{
+ struct scsi_qla_host *vha = lport->qla_vha;
+ struct Scsi_Host *sh = vha->host;
+ struct fc_host_attrs *fc_host = shost_to_fc_host(sh);
+ struct fc_rport *rport;
+ struct tcm_qla2xxx_fc_domain *d;
+ struct tcm_qla2xxx_fc_area *a;
+ struct tcm_qla2xxx_fc_al_pa *p;
+ unsigned long flags;
+ unsigned char domain, area, al_pa;
+ /*
+ * Scan the existing rports, and create a session for the
+ * explict NodeACL is an matching rport->node_name already
+ * exists.
+ */
+ spin_lock_irqsave(sh->host_lock, flags);
+ list_for_each_entry(rport, &fc_host->rports, peers) {
+ if (rport_wwnn != rport->node_name)
+ continue;
+
+ DEBUG_QLA_TGT_SESS_MAP("Located existing rport_wwpn and rport->node_name:"
+ " 0x%016LX, port_id: 0x%04x\n", rport->node_name,
+ rport->port_id);
+ domain = (rport->port_id >> 16) & 0xff;
+ area = (rport->port_id >> 8) & 0xff;
+ al_pa = rport->port_id & 0xff;
+ nacl->nport_id = rport->port_id;
+
+ DEBUG_QLA_TGT_SESS_MAP("fc_rport domain: 0x%02x area: 0x%02x al_pa: %02x\n",
+ domain, area, al_pa);
+ spin_unlock_irqrestore(sh->host_lock, flags);
+
+
+ spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+ d = (struct tcm_qla2xxx_fc_domain *)&lport->lport_fcport_map[domain];
+ DEBUG_QLA_TGT_SESS_MAP("Using d: %p for domain: 0x%02x\n", d, domain);
+ a = &d->areas[area];
+ DEBUG_QLA_TGT_SESS_MAP("Using a: %p for area: 0x%02x\n", a, area);
+ p = &a->al_pas[al_pa];
+ DEBUG_QLA_TGT_SESS_MAP("Using p: %p for al_pa: 0x%02x\n", p, al_pa);
+
+ p->se_nacl = se_nacl;
+ DEBUG_QLA_TGT_SESS_MAP("Setting p->se_nacl to se_nacl: %p for WWNN: 0x%016LX,"
+ " port_id: 0x%04x\n", se_nacl, rport_wwnn,
+ nacl->nport_id);
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+
+ return 1;
+ }
+ spin_unlock_irqrestore(sh->host_lock, flags);
+
+ return 0;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+int tcm_qla2xxx_clear_nacl_from_fcport_map(
+ struct se_node_acl *se_nacl)
+{
+ struct se_portal_group *se_tpg = se_nacl->se_tpg;
+ struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+ struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
+ struct tcm_qla2xxx_nacl, se_node_acl);
+ struct tcm_qla2xxx_fc_domain *d;
+ struct tcm_qla2xxx_fc_area *a;
+ struct tcm_qla2xxx_fc_al_pa *p;
+ unsigned char domain, area, al_pa;
+
+ domain = (nacl->nport_id >> 16) & 0xff;
+ area = (nacl->nport_id >> 8) & 0xff;
+ al_pa = nacl->nport_id & 0xff;
+
+ DEBUG_QLA_TGT_SESS_MAP("fc_rport domain: 0x%02x area: 0x%02x al_pa: %02x\n",
+ domain, area, al_pa);
+
+ d = (struct tcm_qla2xxx_fc_domain *)&lport->lport_fcport_map[domain];
+ DEBUG_QLA_TGT_SESS_MAP("Using d: %p for domain: 0x%02x\n", d, domain);
+ a = &d->areas[area];
+ DEBUG_QLA_TGT_SESS_MAP("Using a: %p for area: 0x%02x\n", a, area);
+ p = &a->al_pas[al_pa];
+ DEBUG_QLA_TGT_SESS_MAP("Using p: %p for al_pa: 0x%02x\n", p, al_pa);
+
+ p->se_nacl = NULL;
+ DEBUG_QLA_TGT_SESS_MAP("Clearing p->se_nacl to se_nacl: %p for WWNN: 0x%016LX,"
+ " port_id: 0x%04x\n", se_nacl, nacl->nport_wwnn,
+ nacl->nport_id);
+
+ return 0;
+}
+
+static struct se_node_acl *tcm_qla2xxx_make_nodeacl(
+ struct se_portal_group *se_tpg,
+ struct config_group *group,
+ const char *name)
+{
+ struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+ struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct se_node_acl *se_nacl, *se_nacl_new;
+ struct tcm_qla2xxx_nacl *nacl;
+ u64 wwnn;
+ u32 qla2xxx_nexus_depth;
+ int rc;
+
+ if (tcm_qla2xxx_parse_wwn(name, &wwnn, 1) < 0)
+ return ERR_PTR(-EINVAL);
+
+ se_nacl_new = tcm_qla2xxx_alloc_fabric_acl(se_tpg);
+ if (!(se_nacl_new))
+ return ERR_PTR(-ENOMEM);
+//#warning FIXME: Hardcoded qla2xxx_nexus depth in tcm_qla2xxx_make_nodeacl()
+ qla2xxx_nexus_depth = 1;
+
+ /*
+ * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
+ * when converting a NodeACL from demo mode -> explict
+ */
+ se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
+ name, qla2xxx_nexus_depth);
+ if (IS_ERR(se_nacl)) {
+ tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
+ return se_nacl;
+ }
+ /*
+ * Locate our struct tcm_qla2xxx_nacl and set the FC Nport WWPN
+ */
+ nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+ nacl->nport_wwnn = wwnn;
+ tcm_qla2xxx_format_wwn(&nacl->nport_name[0], TCM_QLA2XXX_NAMELEN, wwnn);
+ /*
+ * Setup a se_nacl handle based on an a matching struct fc_rport setup
+ * via drivers/scsi/qla2xxx/qla_init.c:qla2x00_reg_remote_port()
+ */
+ rc = tcm_qla2xxx_setup_nacl_from_rport(se_tpg, se_nacl, lport,
+ nacl, wwnn);
+ if (rc < 0) {
+ tcm_qla2xxx_release_fabric_acl(se_tpg, se_nacl_new);
+ return ERR_PTR(rc);
+ }
+
+ return se_nacl;;
+}
+
+static void tcm_qla2xxx_drop_nodeacl(struct se_node_acl *se_acl)
+{
+ struct se_portal_group *se_tpg = se_acl->se_tpg;
+ struct tcm_qla2xxx_nacl *nacl = container_of(se_acl,
+ struct tcm_qla2xxx_nacl, se_node_acl);
+
+ core_tpg_del_initiator_node_acl(se_tpg, se_acl, 1);
+ kfree(nacl);
+}
+
+/* Start items for tcm_qla2xxx_tpg_attrib_cit */
+
+#define DEF_QLA_TPG_ATTRIB(name) \
+ \
+static ssize_t tcm_qla2xxx_tpg_attrib_show_##name( \
+ struct se_portal_group *se_tpg, \
+ char *page) \
+{ \
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
+ struct tcm_qla2xxx_tpg, se_tpg); \
+ \
+ return sprintf(page, "%u\n", QLA_TPG_ATTRIB(tpg)->name); \
+} \
+ \
+static ssize_t tcm_qla2xxx_tpg_attrib_store_##name( \
+ struct se_portal_group *se_tpg, \
+ const char *page, \
+ size_t count) \
+{ \
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg, \
+ struct tcm_qla2xxx_tpg, se_tpg); \
+ unsigned long val; \
+ int ret; \
+ \
+ ret = strict_strtoul(page, 0, &val); \
+ if (ret < 0) { \
+ printk(KERN_ERR "strict_strtoul() failed with" \
+ " ret: %d\n", ret); \
+ return -EINVAL; \
+ } \
+ ret = tcm_qla2xxx_set_attrib_##name(tpg, val); \
+ \
+ return (!ret) ? count : -EINVAL; \
+}
+
+#define DEF_QLA_TPG_ATTR_BOOL(_name) \
+ \
+static int tcm_qla2xxx_set_attrib_##_name( \
+ struct tcm_qla2xxx_tpg *tpg, \
+ unsigned long val) \
+{ \
+ struct tcm_qla2xxx_tpg_attrib *a = &tpg->tpg_attrib; \
+ \
+ if ((val != 0) && (val != 1)) { \
+ printk(KERN_ERR "Illegal boolean value %lu\n", val); \
+ return -EINVAL; \
+ } \
+ \
+ a->_name = val; \
+ return 0; \
+}
+
+#define QLA_TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(tcm_qla2xxx, _name, _mode);
+
+/*
+ * Define tcm_qla2xxx_tpg_attrib_s_generate_node_acls
+ */
+DEF_QLA_TPG_ATTR_BOOL(generate_node_acls);
+DEF_QLA_TPG_ATTRIB(generate_node_acls);
+QLA_TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
+
+/*
+ Define tcm_qla2xxx_attrib_s_cache_dynamic_acls
+ */
+DEF_QLA_TPG_ATTR_BOOL(cache_dynamic_acls);
+DEF_QLA_TPG_ATTRIB(cache_dynamic_acls);
+QLA_TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
+
+/*
+ * Define tcm_qla2xxx_tpg_attrib_s_demo_mode_write_protect
+ */
+DEF_QLA_TPG_ATTR_BOOL(demo_mode_write_protect);
+DEF_QLA_TPG_ATTRIB(demo_mode_write_protect);
+QLA_TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
+
+/*
+ * Define tcm_qla2xxx_tpg_attrib_s_prod_mode_write_protect
+ */
+DEF_QLA_TPG_ATTR_BOOL(prod_mode_write_protect);
+DEF_QLA_TPG_ATTRIB(prod_mode_write_protect);
+QLA_TPG_ATTR(prod_mode_write_protect, 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,
+ NULL,
+};
+
+/* End items for tcm_qla2xxx_tpg_attrib_cit */
+
+static ssize_t tcm_qla2xxx_tpg_show_enable(
+ struct se_portal_group *se_tpg,
+ char *page)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+
+ return snprintf(page, PAGE_SIZE, "%d\n",
+ atomic_read(&tpg->lport_tpg_enabled));
+}
+
+static ssize_t tcm_qla2xxx_tpg_store_enable(
+ struct se_portal_group *se_tpg,
+ const char *page,
+ size_t count)
+{
+ struct se_wwn *se_wwn = se_tpg->se_tpg_wwn;
+ struct tcm_qla2xxx_lport *lport = container_of(se_wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct scsi_qla_host *vha = lport->qla_vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ char *endptr;
+ u32 op;
+
+ op = simple_strtoul(page, &endptr, 0);
+ if ((op != 1) && (op != 0)) {
+ printk(KERN_ERR "Illegal value for tpg_enable: %u\n", op);
+ return -EINVAL;
+ }
+
+ if (op) {
+ atomic_set(&tpg->lport_tpg_enabled, 1);
+ qla_tgt_enable_vha(vha);
+ } else {
+ if (!ha->qla_tgt) {
+ printk(KERN_ERR "truct qla_hw_data *ha->qla_tgt is NULL\n");
+ return -ENODEV;
+ }
+ atomic_set(&tpg->lport_tpg_enabled, 0);
+ qla_tgt_stop_phase1(ha->qla_tgt);
+ }
+
+ return count;
+}
+
+TF_TPG_BASE_ATTR(tcm_qla2xxx, enable, S_IRUGO | S_IWUSR);
+
+static struct configfs_attribute *tcm_qla2xxx_tpg_attrs[] = {
+ &tcm_qla2xxx_tpg_enable.attr,
+ NULL,
+};
+
+static struct se_portal_group *tcm_qla2xxx_make_tpg(
+ struct se_wwn *wwn,
+ struct config_group *group,
+ const char *name)
+{
+ struct tcm_qla2xxx_lport *lport = container_of(wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct tcm_qla2xxx_tpg *tpg;
+ unsigned long tpgt;
+ int ret;
+
+ if (strstr(name, "tpgt_") != name)
+ return ERR_PTR(-EINVAL);
+ if (strict_strtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
+ return ERR_PTR(-EINVAL);
+
+ if ((lport->qla_npiv_vp == NULL) && (tpgt != 1)) {
+ printk(KERN_ERR "In non NPIV mode, a single TPG=1 is used for"
+ " HW port mappings\n");
+ return ERR_PTR(-ENOSYS);
+ }
+
+ tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
+ if (!(tpg)) {
+ printk(KERN_ERR "Unable to allocate struct tcm_qla2xxx_tpg\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ tpg->lport = lport;
+ tpg->lport_tpgt = tpgt;
+ /*
+ * By default allow READ-ONLY TPG demo-mode access w/ cached dynamic NodeACLs
+ */
+ 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;
+
+ ret = core_tpg_register(&tcm_qla2xxx_fabric_configfs->tf_ops, wwn,
+ &tpg->se_tpg, (void *)tpg,
+ TRANSPORT_TPG_TYPE_NORMAL);
+ if (ret < 0) {
+ kfree(tpg);
+ return NULL;
+ }
+ /*
+ * Setup local TPG=1 pointer for non NPIV mode.
+ */
+ if (lport->qla_npiv_vp == NULL)
+ lport->tpg_1 = tpg;
+
+ return &tpg->se_tpg;
+}
+
+static void tcm_qla2xxx_drop_tpg(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+ struct scsi_qla_host *vha = lport->qla_vha;
+ struct qla_hw_data *ha = vha->hw;
+ /*
+ * Call into qla2x_target.c LLD logic to shutdown the active
+ * FC Nexuses and disable target mode operation for this qla_hw_data
+ */
+ if ((ha->qla_tgt != NULL) && !ha->qla_tgt->tgt_stopped)
+ qla_tgt_stop_phase1(ha->qla_tgt);
+
+ core_tpg_deregister(se_tpg);
+ /*
+ * Clear local TPG=1 pointer for non NPIV mode.
+ */
+ if (lport->qla_npiv_vp == NULL)
+ lport->tpg_1 = NULL;
+
+ kfree(tpg);
+}
+
+static struct se_portal_group *tcm_qla2xxx_npiv_make_tpg(
+ struct se_wwn *wwn,
+ struct config_group *group,
+ const char *name)
+{
+ struct tcm_qla2xxx_lport *lport = container_of(wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct tcm_qla2xxx_tpg *tpg;
+ unsigned long tpgt;
+ int ret;
+
+ if (strstr(name, "tpgt_") != name)
+ return ERR_PTR(-EINVAL);
+ if (strict_strtoul(name + 5, 10, &tpgt) || tpgt > USHRT_MAX)
+ return ERR_PTR(-EINVAL);
+
+ tpg = kzalloc(sizeof(struct tcm_qla2xxx_tpg), GFP_KERNEL);
+ if (!(tpg)) {
+ printk(KERN_ERR "Unable to allocate struct tcm_qla2xxx_tpg\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ tpg->lport = lport;
+ tpg->lport_tpgt = tpgt;
+
+ ret = core_tpg_register(&tcm_qla2xxx_npiv_fabric_configfs->tf_ops, wwn,
+ &tpg->se_tpg, (void *)tpg,
+ TRANSPORT_TPG_TYPE_NORMAL);
+ if (ret < 0) {
+ kfree(tpg);
+ return NULL;
+ }
+ return &tpg->se_tpg;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_s_id(
+ scsi_qla_host_t *vha,
+ const uint8_t *s_id)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct tcm_qla2xxx_lport *lport;
+ struct se_node_acl *se_nacl;
+ struct tcm_qla2xxx_nacl *nacl;
+ struct tcm_qla2xxx_fc_domain *d;
+ struct tcm_qla2xxx_fc_area *a;
+ struct tcm_qla2xxx_fc_al_pa *p;
+ unsigned char domain, area, al_pa;
+
+ lport = (struct tcm_qla2xxx_lport *)ha->target_lport_ptr;
+ if (!lport) {
+ printk(KERN_ERR "Unable to locate struct tcm_qla2xxx_lport\n");
+ dump_stack();
+ return NULL;
+ }
+
+ domain = s_id[0];
+ area = s_id[1];
+ al_pa = s_id[2];
+
+ DEBUG_QLA_TGT_SESS_MAP("find_sess_by_s_id: 0x%02x area: 0x%02x al_pa: %02x\n",
+ domain, area, al_pa);
+
+ d = (struct tcm_qla2xxx_fc_domain *)&lport->lport_fcport_map[domain];
+ DEBUG_QLA_TGT_SESS_MAP("Using d: %p for domain: 0x%02x\n", d, domain);
+ a = &d->areas[area];
+ DEBUG_QLA_TGT_SESS_MAP("Using a: %p for area: 0x%02x\n", a, area);
+ p = &a->al_pas[al_pa];
+ DEBUG_QLA_TGT_SESS_MAP("Using p: %p for al_pa: 0x%02x\n", p, al_pa);
+
+ se_nacl = p->se_nacl;
+ if (!se_nacl) {
+ printk(KERN_ERR "Unable to locate s_id: 0x%02x area: 0x%02x"
+ " al_pa: %02x\n", domain, area, al_pa);
+ return NULL;
+ }
+ DEBUG_QLA_TGT_SESS_MAP("find_sess_by_s_id: located se_nacl: %p,"
+ " initiatorname: %s\n", se_nacl, se_nacl->initiatorname);
+
+ nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+ if (!nacl->qla_tgt_sess) {
+ printk(KERN_ERR "Unable to locate struct qla_tgt_sess\n");
+ return NULL;
+ }
+
+ return nacl->qla_tgt_sess;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static void tcm_qla2xxx_set_sess_by_s_id(
+ struct tcm_qla2xxx_lport *lport,
+ struct se_node_acl *new_se_nacl,
+ struct tcm_qla2xxx_nacl *nacl,
+ struct se_session *se_sess,
+ struct qla_tgt_sess *qla_tgt_sess,
+ uint8_t *s_id)
+{
+ struct se_node_acl *saved_nacl;
+ struct tcm_qla2xxx_fc_domain *d;
+ struct tcm_qla2xxx_fc_area *a;
+ struct tcm_qla2xxx_fc_al_pa *p;
+ unsigned char domain, area, al_pa;
+
+ domain = s_id[0];
+ area = s_id[1];
+ al_pa = s_id[2];
+ DEBUG_QLA_TGT_SESS_MAP("set_sess_by_s_id: domain 0x%02x area: 0x%02x al_pa: %02x\n",
+ domain, area, al_pa);
+
+ d = (struct tcm_qla2xxx_fc_domain *)&lport->lport_fcport_map[domain];
+ DEBUG_QLA_TGT_SESS_MAP("Using d: %p for domain: 0x%02x\n", d, domain);
+ a = &d->areas[area];
+ DEBUG_QLA_TGT_SESS_MAP("Using a: %p for area: 0x%02x\n", a, area);
+ p = &a->al_pas[al_pa];
+ DEBUG_QLA_TGT_SESS_MAP("Using p: %p for al_pa: 0x%02x\n", p, al_pa);
+
+ saved_nacl = p->se_nacl;
+ if (!saved_nacl) {
+ DEBUG_QLA_TGT_SESS_MAP("Setting up new p->se_nacl to new_se_nacl\n");
+ p->se_nacl = new_se_nacl;
+ qla_tgt_sess->se_sess = se_sess;
+ nacl->qla_tgt_sess = qla_tgt_sess;
+ return;
+ }
+
+ if (nacl->qla_tgt_sess) {
+ if (new_se_nacl == NULL) {
+ DEBUG_QLA_TGT_SESS_MAP("Clearing existing nacl->qla_tgt_sess"
+ " and p->se_nacl\n");
+ p->se_nacl = NULL;
+ nacl->qla_tgt_sess = NULL;
+ return;
+ }
+ DEBUG_QLA_TGT_SESS_MAP("Replacing existing nacl->qla_tgt_sess and"
+ " p->se_nacl\n");
+ p->se_nacl = new_se_nacl;
+ qla_tgt_sess->se_sess = se_sess;
+ nacl->qla_tgt_sess = qla_tgt_sess;
+ return;
+ }
+
+ if (new_se_nacl == NULL) {
+ DEBUG_QLA_TGT_SESS_MAP("Clearing existing p->se_nacl\n");
+ p->se_nacl = NULL;
+ return;
+ }
+
+ DEBUG_QLA_TGT_SESS_MAP("Replacing existing p->se_nacl w/o active"
+ " nacl->qla_tgt_sess\n");
+ p->se_nacl = new_se_nacl;
+ qla_tgt_sess->se_sess = se_sess;
+ nacl->qla_tgt_sess = qla_tgt_sess;
+
+ DEBUG_QLA_TGT_SESS_MAP("Setup nacl->qla_tgt_sess %p by s_id for se_nacl: %p,"
+ " initiatorname: %s\n", nacl->qla_tgt_sess, new_se_nacl,
+ new_se_nacl->initiatorname);
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static struct qla_tgt_sess *tcm_qla2xxx_find_sess_by_loop_id(
+ scsi_qla_host_t *vha,
+ const uint16_t loop_id)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct tcm_qla2xxx_lport *lport;
+ struct se_node_acl *se_nacl;
+ struct tcm_qla2xxx_nacl *nacl;
+ struct tcm_qla2xxx_fc_loopid *fc_loopid;
+
+ lport = (struct tcm_qla2xxx_lport *)ha->target_lport_ptr;
+ if (!lport) {
+ printk(KERN_ERR "Unable to locate struct tcm_qla2xxx_lport\n");
+ dump_stack();
+ return NULL;
+ }
+
+ DEBUG_QLA_TGT_SESS_MAP("find_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
+
+ fc_loopid = (struct tcm_qla2xxx_fc_loopid *)&lport->lport_loopid_map[loop_id];
+
+ se_nacl = fc_loopid->se_nacl;
+ if (!se_nacl) {
+ printk(KERN_ERR "Unable to locate se_nacl by loop_id:"
+ " 0x%04x\n", loop_id);
+ return NULL;
+ }
+
+ nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+
+ if (!nacl->qla_tgt_sess) {
+ printk(KERN_ERR "Unable to locate struct qla_tgt_sess\n");
+ return NULL;
+ }
+
+ return nacl->qla_tgt_sess;
+}
+
+/*
+ * Expected to be called with struct qla_hw_data->hardware_lock held
+ */
+static void tcm_qla2xxx_set_sess_by_loop_id(
+ struct tcm_qla2xxx_lport *lport,
+ struct se_node_acl *new_se_nacl,
+ struct tcm_qla2xxx_nacl *nacl,
+ struct se_session *se_sess,
+ struct qla_tgt_sess *qla_tgt_sess,
+ uint16_t loop_id)
+{
+ struct se_node_acl *saved_nacl;
+ struct tcm_qla2xxx_fc_loopid *fc_loopid;
+
+ DEBUG_QLA_TGT_SESS_MAP("set_sess_by_loop_id: Using loop_id: 0x%04x\n", loop_id);
+
+ fc_loopid = (struct tcm_qla2xxx_fc_loopid *)&lport->lport_loopid_map[loop_id];
+
+ saved_nacl = fc_loopid->se_nacl;
+ if (!saved_nacl) {
+ DEBUG_QLA_TGT_SESS_MAP("Setting up new fc_loopid->se_nacl"
+ " to new_se_nacl\n");
+ fc_loopid->se_nacl = new_se_nacl;
+ if (qla_tgt_sess->se_sess != se_sess)
+ qla_tgt_sess->se_sess = se_sess;
+ if (nacl->qla_tgt_sess != qla_tgt_sess)
+ nacl->qla_tgt_sess = qla_tgt_sess;
+ return;
+ }
+
+ if (nacl->qla_tgt_sess) {
+ if (new_se_nacl == NULL) {
+ DEBUG_QLA_TGT_SESS_MAP("Clearing nacl->qla_tgt_sess and"
+ " fc_loopid->se_nacl\n");
+ fc_loopid->se_nacl = NULL;
+ nacl->qla_tgt_sess = NULL;
+ return;
+ }
+
+ DEBUG_QLA_TGT_SESS_MAP("Replacing existing nacl->qla_tgt_sess and"
+ " fc_loopid->se_nacl\n");
+ fc_loopid->se_nacl = new_se_nacl;
+ if (qla_tgt_sess->se_sess != se_sess)
+ qla_tgt_sess->se_sess = se_sess;
+ if (nacl->qla_tgt_sess != qla_tgt_sess)
+ nacl->qla_tgt_sess = qla_tgt_sess;
+ return;
+ }
+
+ if (new_se_nacl == NULL) {
+ DEBUG_QLA_TGT_SESS_MAP("Clearing fc_loopid->se_nacl\n");
+ fc_loopid->se_nacl = NULL;
+ return;
+ }
+
+ DEBUG_QLA_TGT_SESS_MAP("Replacing existing fc_loopid->se_nacl w/o"
+ " active nacl->qla_tgt_sess\n");
+ fc_loopid->se_nacl = new_se_nacl;
+ if (qla_tgt_sess->se_sess != se_sess)
+ qla_tgt_sess->se_sess = se_sess;
+ if (nacl->qla_tgt_sess != qla_tgt_sess)
+ nacl->qla_tgt_sess = qla_tgt_sess;
+
+ DEBUG_QLA_TGT_SESS_MAP("Setup nacl->qla_tgt_sess %p by loop_id for se_nacl: %p,"
+ " initiatorname: %s\n", nacl->qla_tgt_sess, new_se_nacl,
+ new_se_nacl->initiatorname);
+}
+
+static void tcm_qla2xxx_free_session(struct qla_tgt_sess *sess)
+{
+ struct qla_tgt *tgt = sess->tgt;
+ struct qla_hw_data *ha = tgt->ha;
+ struct se_session *se_sess;
+ struct se_node_acl *se_nacl;
+ struct tcm_qla2xxx_lport *lport;
+ struct tcm_qla2xxx_nacl *nacl;
+ unsigned char be_sid[3];
+
+ se_sess = sess->se_sess;
+ if (!se_sess) {
+ printk(KERN_ERR "struct qla_tgt_sess->se_sess is NULL\n");
+ dump_stack();
+ return;
+ }
+ se_nacl = se_sess->se_node_acl;
+ nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+
+ lport = (struct tcm_qla2xxx_lport *)ha->target_lport_ptr;
+ if (!lport) {
+ printk(KERN_ERR "Unable to locate struct tcm_qla2xxx_lport\n");
+ dump_stack();
+ return;
+ }
+ /*
+ * Now clear the struct se_node_acl->nacl_sess pointer
+ */
+ transport_deregister_session_configfs(sess->se_sess);
+
+ /*
+ * And now clear the se_nacl and session pointers from our HW lport
+ * mappings for fabric S_ID and LOOP_ID.
+ */
+ memset(&be_sid, 0, 3);
+ be_sid[0] = sess->s_id.b.domain;
+ be_sid[1] = sess->s_id.b.area;
+ be_sid[2] = sess->s_id.b.al_pa;
+
+ tcm_qla2xxx_set_sess_by_s_id(lport, NULL, nacl, se_sess,
+ sess, be_sid);
+ tcm_qla2xxx_set_sess_by_loop_id(lport, NULL, nacl, se_sess,
+ sess, sess->loop_id);
+ /*
+ * Release the FC nexus -> target se_session link now.
+ */
+ transport_deregister_session(sess->se_sess);
+}
+
+/*
+ * Called via qla_tgt_create_sess():ha->qla2x_tmpl->check_initiator_node_acl()
+ * to locate struct se_node_acl
+ */
+static int tcm_qla2xxx_check_initiator_node_acl(
+ scsi_qla_host_t *vha,
+ unsigned char *fc_wwpn,
+ void *qla_tgt_sess,
+ uint8_t *s_id,
+ uint16_t loop_id)
+{
+ struct qla_hw_data *ha = vha->hw;
+ struct tcm_qla2xxx_lport *lport;
+ struct tcm_qla2xxx_tpg *tpg;
+ struct tcm_qla2xxx_nacl *nacl;
+ struct se_portal_group *se_tpg;
+ struct se_node_acl *se_nacl;
+ struct se_session *se_sess;
+ struct qla_tgt_sess *sess = qla_tgt_sess;
+ unsigned char port_name[36];
+ unsigned long flags;
+
+ lport = (struct tcm_qla2xxx_lport *)ha->target_lport_ptr;
+ if (!lport) {
+ printk(KERN_ERR "Unable to locate struct tcm_qla2xxx_lport\n");
+ dump_stack();
+ return -EINVAL;
+ }
+ /*
+ * Locate the TPG=1 reference..
+ */
+ tpg = lport->tpg_1;
+ if (!tpg) {
+ printk(KERN_ERR "Unable to lcoate struct tcm_qla2xxx_lport->tpg_1\n");
+ return -EINVAL;
+ }
+ se_tpg = &tpg->se_tpg;
+
+ se_sess = transport_init_session();
+ if (!se_sess) {
+ printk(KERN_ERR "Unable to initialize struct se_session\n");
+ return -ENOMEM;
+ }
+ /*
+ * Format the FCP Initiator port_name into colon seperated values to match
+ * the format by tcm_qla2xxx explict ConfigFS NodeACLs.
+ */
+ memset(&port_name, 0, 36);
+ snprintf(port_name, 36, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
+ fc_wwpn[0], fc_wwpn[1], fc_wwpn[2], fc_wwpn[3], fc_wwpn[4],
+ fc_wwpn[5], fc_wwpn[6], fc_wwpn[7]);
+ /*
+ * Locate our struct se_node_acl either from an explict NodeACL created
+ * via ConfigFS, or via running in TPG demo mode.
+ */
+ se_sess->se_node_acl = core_tpg_check_initiator_node_acl(se_tpg, port_name);
+ if (!se_sess->se_node_acl) {
+ transport_free_session(se_sess);
+ return -EINVAL;
+ }
+ se_nacl = se_sess->se_node_acl;
+ nacl = container_of(se_nacl, struct tcm_qla2xxx_nacl, se_node_acl);
+ /*
+ * And now setup the new se_nacl and session pointers into our HW lport
+ * mappings for fabric S_ID and LOOP_ID.
+ */
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ tcm_qla2xxx_set_sess_by_s_id(lport, se_nacl, nacl, se_sess,
+ qla_tgt_sess, s_id);
+ tcm_qla2xxx_set_sess_by_loop_id(lport, se_nacl, nacl, se_sess,
+ qla_tgt_sess, loop_id);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ /*
+ * Finally register the new FC Nexus with TCM
+ */
+ __transport_register_session(se_nacl->se_tpg, se_nacl, se_sess, sess);
+
+ return 0;
+}
+
+/*
+ * Calls into tcm_qla2xxx used by qla2xxx LLD I/O path.
+ */
+static struct qla_target_template tcm_qla2xxx_template = {
+ .handle_cmd = tcm_qla2xxx_handle_cmd,
+ .handle_data = tcm_qla2xxx_handle_data,
+ .handle_tmr = tcm_qla2xxx_handle_tmr,
+ .free_cmd = tcm_qla2xxx_free_cmd,
+ .free_session = tcm_qla2xxx_free_session,
+ .check_initiator_node_acl = tcm_qla2xxx_check_initiator_node_acl,
+ .find_sess_by_s_id = tcm_qla2xxx_find_sess_by_s_id,
+ .find_sess_by_loop_id = tcm_qla2xxx_find_sess_by_loop_id,
+};
+
+static int tcm_qla2xxx_init_lport(
+ struct tcm_qla2xxx_lport *lport,
+ struct scsi_qla_host *vha,
+ struct scsi_qla_host *npiv_vp)
+{
+ struct qla_hw_data *ha = vha->hw;
+
+ lport->lport_fcport_map = vmalloc(
+ sizeof(struct tcm_qla2xxx_fc_domain) * 256);
+ if (!(lport->lport_fcport_map)) {
+ printk(KERN_ERR "Unable to allocate lport_fcport_map of %lu"
+ " bytes\n", sizeof(struct tcm_qla2xxx_fc_domain) * 256);
+ return -ENOMEM;
+ }
+ memset(lport->lport_fcport_map, 0,
+ sizeof(struct tcm_qla2xxx_fc_domain) * 256);
+ printk(KERN_INFO "qla2xxx: Allocated lport_fcport_map of %lu bytes\n",
+ sizeof(struct tcm_qla2xxx_fc_domain) * 256);
+
+ lport->lport_loopid_map = vmalloc(sizeof(struct tcm_qla2xxx_fc_loopid) *
+ 65536);
+ if (!(lport->lport_loopid_map)) {
+ printk(KERN_ERR "Unable to allocate lport->lport_loopid_map"
+ " of %lu bytes\n", sizeof(struct tcm_qla2xxx_fc_loopid)
+ * 65536);
+ vfree(lport->lport_fcport_map);
+ return -ENOMEM;
+ }
+ memset(lport->lport_loopid_map, 0, sizeof(struct tcm_qla2xxx_fc_loopid)
+ * 65536);
+ printk(KERN_INFO "qla2xxx: Allocated lport_loopid_map of %lu bytes\n",
+ sizeof(struct tcm_qla2xxx_fc_loopid) * 65536);
+ /*
+ * Setup local pointer to vha, NPIV VP pointer (if present) and
+ * vha->tcm_lport pointer
+ */
+ lport->qla_vha = vha;
+ lport->qla_npiv_vp = npiv_vp;
+ /*
+ * Setup the target_lport_ptr and qla2x_tmpl.
+ */
+ ha->target_lport_ptr = lport;
+ ha->qla2x_tmpl = &tcm_qla2xxx_template;
+
+ return 0;
+}
+
+static struct se_wwn *tcm_qla2xxx_make_lport(
+ struct target_fabric_configfs *tf,
+ struct config_group *group,
+ const char *name)
+{
+ struct tcm_qla2xxx_lport *lport;
+ struct Scsi_Host *host = NULL;
+ struct pci_dev *dev = NULL;
+ struct scsi_qla_host *vha;
+ struct qla_hw_data *ha;
+ unsigned long flags;
+ u64 wwpn;
+ int i, ret = -ENODEV;
+ u8 b[8];
+
+ if (tcm_qla2xxx_parse_wwn(name, &wwpn, 1) < 0)
+ return ERR_PTR(-EINVAL);
+
+ lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
+ if (!(lport)) {
+ printk(KERN_ERR "Unable to allocate struct tcm_qla2xxx_lport\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ lport->lport_wwpn = wwpn;
+ tcm_qla2xxx_format_wwn(&lport->lport_name[0], TCM_QLA2XXX_NAMELEN, wwpn);
+
+ while ((dev = pci_get_device(PCI_VENDOR_ID_QLOGIC, PCI_ANY_ID,
+ dev)) != NULL) {
+
+ vha = pci_get_drvdata(dev);
+ if (!vha)
+ continue;
+ ha = vha->hw;
+ if (!ha)
+ continue;
+ host = vha->host;
+ if (!host)
+ continue;
+
+ if (!(host->hostt->supported_mode & MODE_TARGET))
+ continue;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (host->active_mode & MODE_TARGET) {
+ printk(KERN_INFO "MODE_TARGET already active on qla2xxx"
+ "(%d)\n", host->host_no);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ continue;
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if (!scsi_host_get(host)) {
+ printk(KERN_ERR "Unable to scsi_host_get() for"
+ " qla2xxx scsi_host\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ printk("qla2xxx HW vha->node_name: ");
+ for (i = 0; i < 8; i++)
+ printk("%02x ", vha->node_name[i]);
+ printk("\n");
+
+ printk("qla2xxx HW vha->port_name: ");
+ for (i = 0; i < 8; i++)
+ printk("%02x ", vha->port_name[i]);
+ printk("\n");
+
+ printk("qla2xxx passed configfs WWPN: ");
+ put_unaligned_be64(wwpn, b);
+ for (i = 0; i < 8; i++)
+ printk("%02x ", b[i]);
+ printk("\n");
+
+ if (memcmp(vha->port_name, b, 8)) {
+ scsi_host_put(host);
+ continue;
+ }
+ printk("qla2xxx: Found matching HW WWPN: %s for lport\n", name);
+ ret = tcm_qla2xxx_init_lport(lport, vha, NULL);
+ break;
+ }
+
+ if (ret != 0)
+ goto out;
+
+ return &lport->lport_wwn;
+out:
+ kfree(lport);
+ return ERR_PTR(ret);
+}
+
+static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
+{
+ struct tcm_qla2xxx_lport *lport = container_of(wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct scsi_qla_host *vha = lport->qla_vha;
+ struct qla_hw_data *ha = vha->hw;
+ struct Scsi_Host *sh = vha->host;
+ /*
+ * Call into qla2x_target.c LLD logic to complete the
+ * shutdown of struct qla_tgt after the call to
+ * qla_tgt_stop_phase1() from tcm_qla2xxx_drop_tpg() above..
+ */
+ if ((ha->qla_tgt != NULL) && !ha->qla_tgt->tgt_stopped)
+ qla_tgt_stop_phase2(ha->qla_tgt);
+ /*
+ * Clear the target_lport_ptr qla_target_template pointer in qla_hw_data
+ */
+ ha->target_lport_ptr = NULL;
+ ha->qla2x_tmpl = NULL;
+ /*
+ * Release the Scsi_Host reference for the underlying qla2xxx host
+ */
+ scsi_host_put(sh);
+
+ vfree(lport->lport_loopid_map);
+ vfree(lport->lport_fcport_map);
+ kfree(lport);
+}
+
+static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
+ struct target_fabric_configfs *tf,
+ struct config_group *group,
+ const char *name)
+{
+ struct tcm_qla2xxx_lport *lport;
+ struct Scsi_Host *host = NULL;
+ struct pci_dev *dev = NULL;
+ struct scsi_qla_host *vha, *npiv_vp;
+ struct qla_hw_data *ha;
+ struct fc_vport_identifiers vid;
+ struct fc_vport *vport;
+ unsigned long flags;
+ u64 npiv_wwpn, npiv_wwnn;
+ int i, ret = -ENODEV;
+ u8 b[8], b2[8];
+
+ if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
+ &npiv_wwpn, &npiv_wwnn) < 0)
+ return ERR_PTR(-EINVAL);
+
+ lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
+ if (!(lport)) {
+ printk(KERN_ERR "Unable to allocate struct tcm_qla2xxx_lport"
+ " for NPIV\n");
+ return ERR_PTR(-ENOMEM);
+ }
+ lport->lport_npiv_wwpn = npiv_wwpn;
+ lport->lport_npiv_wwnn = npiv_wwnn;
+ tcm_qla2xxx_npiv_format_wwn(&lport->lport_npiv_name[0],
+ TCM_QLA2XXX_NAMELEN, npiv_wwpn, npiv_wwnn);
+
+ while ((dev = pci_get_device(PCI_VENDOR_ID_QLOGIC, PCI_ANY_ID,
+ dev)) != NULL) {
+
+ vha = pci_get_drvdata(dev);
+ if (!vha)
+ continue;
+ ha = vha->hw;
+ if (!ha)
+ continue;
+ host = vha->host;
+ if (!host)
+ continue;
+
+ if (!(host->hostt->supported_mode & MODE_TARGET))
+ continue;
+
+ spin_lock_irqsave(&ha->hardware_lock, flags);
+ if (host->active_mode & MODE_TARGET) {
+ printk(KERN_INFO "MODE_TARGET already active on qla2xxx"
+ "(%d)\n", host->host_no);
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+ continue;
+ }
+ spin_unlock_irqrestore(&ha->hardware_lock, flags);
+
+ if (!scsi_host_get(host)) {
+ printk(KERN_ERR "Unable to scsi_host_get() for"
+ " qla2xxx scsi_host\n");
+ ret = -EINVAL;
+ goto out;
+ }
+
+ printk("qla2xxx HW vha->node_name: ");
+ for (i = 0; i < 8; i++)
+ printk("%02x ", vha->node_name[i]);
+ printk("\n");
+
+ printk("qla2xxx HW vha->port_name: ");
+ for (i = 0; i < 8; i++)
+ printk("%02x ", vha->port_name[i]);
+ printk("\n");
+
+ printk("qla2xxx passed configfs NPIV WWPN: ");
+ put_unaligned_be64(npiv_wwpn, b);
+ for (i = 0; i < 8; i++)
+ printk("%02x ", b[i]);
+ printk("\n");
+
+ printk("qla2xxx passed configfs NPIV WWNN: ");
+ put_unaligned_be64(npiv_wwnn, b2);
+ for (i = 0; i < 8; i++)
+ printk("%02x ", b2[i]);
+ printk("\n");
+
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ list_for_each_entry(npiv_vp, &ha->vp_list, list) {
+ if (!npiv_vp->vp_idx)
+ continue;
+
+ if (memcmp(npiv_vp->port_name, b, 8) ||
+ memcmp(npiv_vp->node_name, b2, 8))
+ continue;
+
+#warning FIXME: Need to add atomic_inc(&npiv_vp->vref_count) before dropping ha->vport_slock..?
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+
+ printk("qla2xxx_npiv: Found matching NPIV WWPN+WWNN: %s "
+ " for lport\n", name);
+ tcm_qla2xxx_init_lport(lport, vha, npiv_vp);
+ /*
+ * Setup fc_vport_identifiers for NPIV containing
+ * the passed WWPN and WWNN for the new libfc vport.
+ */
+ memset(&vid, 0, sizeof(vid));
+ vid.roles = FC_PORT_ROLE_FCP_INITIATOR;
+ vid.vport_type = FC_PORTTYPE_NPIV;
+ vid.port_name = npiv_wwpn;
+ vid.node_name = npiv_wwnn;
+ /* vid.symbolic_name is already zero/NULL's */
+ vid.disable = false; /* always enabled */
+
+ /* we only allow support on Channel 0 !!! */
+ vport = fc_vport_create(host, 0, &vid);
+ if (!vport) {
+ printk(KERN_ERR "fc_vport_create() failed for"
+ " NPIV tcm_qla2xxx\n");
+ scsi_host_put(host);
+ ret = -EINVAL;
+ goto out;
+ }
+ lport->npiv_vport = vport;
+ ret = 0;
+ spin_lock_irqsave(&ha->vport_slock, flags);
+ break;
+ }
+ spin_unlock_irqrestore(&ha->vport_slock, flags);
+
+ if (!ret)
+ break;
+
+ scsi_host_put(host);
+ }
+
+ if (ret != 0)
+ goto out;
+
+ return &lport->lport_wwn;
+out:
+ kfree(lport);
+ return ERR_PTR(ret);
+}
+
+static void tcm_qla2xxx_npiv_drop_lport(struct se_wwn *wwn)
+{
+ struct tcm_qla2xxx_lport *lport = container_of(wwn,
+ struct tcm_qla2xxx_lport, lport_wwn);
+ struct scsi_qla_host *vha = lport->qla_vha;
+ struct Scsi_Host *sh = vha->host;
+ /*
+ * Notify libfc that we want to release the lport->npiv_vport
+ */
+ fc_vport_terminate(lport->npiv_vport);
+
+ scsi_host_put(sh);
+ kfree(lport);
+}
+
+
+static ssize_t tcm_qla2xxx_wwn_show_attr_version(
+ struct target_fabric_configfs *tf,
+ char *page)
+{
+ return sprintf(page, "TCM QLOGIC QLA2XXX NPIV capable fabric module %s on %s/%s"
+ " on "UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
+ utsname()->machine);
+}
+
+TF_WWN_ATTR_RO(tcm_qla2xxx, version);
+
+static struct configfs_attribute *tcm_qla2xxx_wwn_attrs[] = {
+ &tcm_qla2xxx_wwn_version.attr,
+ NULL,
+};
+
+static struct target_core_fabric_ops tcm_qla2xxx_ops = {
+ .get_fabric_name = tcm_qla2xxx_get_fabric_name,
+ .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
+ .tpg_get_wwn = tcm_qla2xxx_get_fabric_wwn,
+ .tpg_get_tag = tcm_qla2xxx_get_tag,
+ .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
+ .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
+ .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
+ .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
+ .tpg_check_demo_mode = tcm_qla2xxx_check_demo_mode,
+ .tpg_check_demo_mode_cache = tcm_qla2xxx_check_demo_mode_cache,
+ .tpg_check_demo_mode_write_protect = tcm_qla2xxx_check_demo_write_protect,
+ .tpg_check_prod_mode_write_protect = tcm_qla2xxx_check_prod_write_protect,
+ .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,
+ .new_cmd_map = tcm_qla2xxx_new_cmd_map,
+ .check_stop_free = tcm_qla2xxx_check_stop_free,
+ .release_cmd_to_pool = tcm_qla2xxx_release_cmd,
+ .release_cmd_direct = tcm_qla2xxx_release_cmd,
+ .shutdown_session = tcm_qla2xxx_shutdown_session,
+ .close_session = tcm_qla2xxx_close_session,
+ .stop_session = tcm_qla2xxx_stop_session,
+ .fall_back_to_erl0 = tcm_qla2xxx_reset_nexus,
+ .sess_logged_in = tcm_qla2xxx_sess_logged_in,
+ .sess_get_index = tcm_qla2xxx_sess_get_index,
+ .sess_get_initiator_sid = NULL,
+ .write_pending = tcm_qla2xxx_write_pending,
+ .write_pending_status = tcm_qla2xxx_write_pending_status,
+ .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
+ .get_task_tag = tcm_qla2xxx_get_task_tag,
+ .get_cmd_state = tcm_qla2xxx_get_cmd_state,
+ .new_cmd_failure = tcm_qla2xxx_new_cmd_failure,
+ .queue_data_in = tcm_qla2xxx_queue_data_in,
+ .queue_status = tcm_qla2xxx_queue_status,
+ .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
+ .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
+ .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
+ .is_state_remove = tcm_qla2xxx_is_state_remove,
+ .pack_lun = tcm_qla2xxx_pack_lun,
+ /*
+ * Setup function pointers for generic logic in target_core_fabric_configfs.c
+ */
+ .fabric_make_wwn = tcm_qla2xxx_make_lport,
+ .fabric_drop_wwn = tcm_qla2xxx_drop_lport,
+ .fabric_make_tpg = tcm_qla2xxx_make_tpg,
+ .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
+ .fabric_post_link = NULL,
+ .fabric_pre_unlink = NULL,
+ .fabric_make_np = NULL,
+ .fabric_drop_np = NULL,
+ .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
+ .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
+};
+
+static struct target_core_fabric_ops tcm_qla2xxx_npiv_ops = {
+ .get_fabric_name = tcm_qla2xxx_npiv_get_fabric_name,
+ .get_fabric_proto_ident = tcm_qla2xxx_get_fabric_proto_ident,
+ .tpg_get_wwn = tcm_qla2xxx_npiv_get_fabric_wwn,
+ .tpg_get_tag = tcm_qla2xxx_get_tag,
+ .tpg_get_default_depth = tcm_qla2xxx_get_default_depth,
+ .tpg_get_pr_transport_id = tcm_qla2xxx_get_pr_transport_id,
+ .tpg_get_pr_transport_id_len = tcm_qla2xxx_get_pr_transport_id_len,
+ .tpg_parse_pr_out_transport_id = tcm_qla2xxx_parse_pr_out_transport_id,
+ .tpg_check_demo_mode = tcm_qla2xxx_check_false,
+ .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_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,
+ .release_cmd_to_pool = tcm_qla2xxx_release_cmd,
+ .release_cmd_direct = tcm_qla2xxx_release_cmd,
+ .shutdown_session = tcm_qla2xxx_shutdown_session,
+ .close_session = tcm_qla2xxx_close_session,
+ .stop_session = tcm_qla2xxx_stop_session,
+ .fall_back_to_erl0 = tcm_qla2xxx_reset_nexus,
+ .sess_logged_in = tcm_qla2xxx_sess_logged_in,
+ .sess_get_index = tcm_qla2xxx_sess_get_index,
+ .sess_get_initiator_sid = NULL,
+ .write_pending = tcm_qla2xxx_write_pending,
+ .write_pending_status = tcm_qla2xxx_write_pending_status,
+ .set_default_node_attributes = tcm_qla2xxx_set_default_node_attrs,
+ .get_task_tag = tcm_qla2xxx_get_task_tag,
+ .get_cmd_state = tcm_qla2xxx_get_cmd_state,
+ .new_cmd_failure = tcm_qla2xxx_new_cmd_failure,
+ .queue_data_in = tcm_qla2xxx_queue_data_in,
+ .queue_status = tcm_qla2xxx_queue_status,
+ .queue_tm_rsp = tcm_qla2xxx_queue_tm_rsp,
+ .get_fabric_sense_len = tcm_qla2xxx_get_fabric_sense_len,
+ .set_fabric_sense_len = tcm_qla2xxx_set_fabric_sense_len,
+ .is_state_remove = tcm_qla2xxx_is_state_remove,
+ .pack_lun = tcm_qla2xxx_pack_lun,
+ /*
+ * Setup function pointers for generic logic in target_core_fabric_configfs.c
+ */
+ .fabric_make_wwn = tcm_qla2xxx_npiv_make_lport,
+ .fabric_drop_wwn = tcm_qla2xxx_npiv_drop_lport,
+ .fabric_make_tpg = tcm_qla2xxx_npiv_make_tpg,
+ .fabric_drop_tpg = tcm_qla2xxx_drop_tpg,
+ .fabric_post_link = NULL,
+ .fabric_pre_unlink = NULL,
+ .fabric_make_np = NULL,
+ .fabric_drop_np = NULL,
+ .fabric_make_nodeacl = tcm_qla2xxx_make_nodeacl,
+ .fabric_drop_nodeacl = tcm_qla2xxx_drop_nodeacl,
+};
+
+static int tcm_qla2xxx_register_configfs(void)
+{
+ struct target_fabric_configfs *fabric, *npiv_fabric;
+ int ret;
+
+ printk(KERN_INFO "TCM QLOGIC QLA2XXX fabric module %s on %s/%s"
+ " on "UTS_RELEASE"\n", TCM_QLA2XXX_VERSION, utsname()->sysname,
+ utsname()->machine);
+ /*
+ * Register the top level struct config_item_type with TCM core
+ */
+ fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx");
+ if (!(fabric)) {
+ printk(KERN_ERR "target_fabric_configfs_init() failed\n");
+ return -ENOMEM;
+ }
+ /*
+ * Setup fabric->tf_ops from our local tcm_qla2xxx_ops
+ */
+ fabric->tf_ops = tcm_qla2xxx_ops;
+ /*
+ * Setup the struct se_task->task_sg[] chaining bit
+ */
+ fabric->tf_ops.task_sg_chaining = 1;
+ /*
+ * Setup default attribute lists for various fabric->tf_cit_tmpl
+ */
+ TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
+ TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = tcm_qla2xxx_tpg_attrs;
+ TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = tcm_qla2xxx_tpg_attrib_attrs;
+ TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
+ /*
+ * Register the fabric for use within TCM
+ */
+ ret = target_fabric_configfs_register(fabric);
+ if (ret < 0) {
+ printk(KERN_ERR "target_fabric_configfs_register() failed"
+ " for TCM_QLA2XXX\n");
+ return ret;
+ }
+ /*
+ * Setup our local pointer to *fabric
+ */
+ tcm_qla2xxx_fabric_configfs = fabric;
+ printk(KERN_INFO "TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_fabric_configfs\n");
+
+ /*
+ * Register the top level struct config_item_type for NPIV with TCM core
+ */
+ npiv_fabric = target_fabric_configfs_init(THIS_MODULE, "qla2xxx_npiv");
+ if (!(npiv_fabric)) {
+ printk(KERN_ERR "target_fabric_configfs_init() failed\n");
+ ret = -ENOMEM;
+ goto out;
+ }
+ /*
+ * Setup fabric->tf_ops from our local tcm_qla2xxx_npiv_ops
+ */
+ npiv_fabric->tf_ops = tcm_qla2xxx_npiv_ops;
+ /*
+ * Setup default attribute lists for various npiv_fabric->tf_cit_tmpl
+ */
+ TF_CIT_TMPL(npiv_fabric)->tfc_wwn_cit.ct_attrs = tcm_qla2xxx_wwn_attrs;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_base_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_attrib_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_param_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_np_base_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_base_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = NULL;
+ TF_CIT_TMPL(npiv_fabric)->tfc_tpg_nacl_param_cit.ct_attrs = NULL;
+ /*
+ * Register the npiv_fabric for use within TCM
+ */
+ ret = target_fabric_configfs_register(npiv_fabric);
+ if (ret < 0) {
+ printk(KERN_ERR "target_fabric_configfs_register() failed"
+ " for TCM_QLA2XXX\n");
+ goto out;;
+ }
+ /*
+ * Setup our local pointer to *npiv_fabric
+ */
+ tcm_qla2xxx_npiv_fabric_configfs = npiv_fabric;
+ printk(KERN_INFO "TCM_QLA2XXX[0] - Set fabric -> tcm_qla2xxx_npiv_fabric_configfs\n");
+
+ return 0;
+out:
+ if (tcm_qla2xxx_fabric_configfs != NULL)
+ target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
+
+ return ret;
+}
+
+static void tcm_qla2xxx_deregister_configfs(void)
+{
+ if (!(tcm_qla2xxx_fabric_configfs))
+ return;
+
+ target_fabric_configfs_deregister(tcm_qla2xxx_fabric_configfs);
+ tcm_qla2xxx_fabric_configfs = NULL;
+ printk(KERN_INFO "TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_fabric_configfs\n");
+
+ target_fabric_configfs_deregister(tcm_qla2xxx_npiv_fabric_configfs);
+ tcm_qla2xxx_npiv_fabric_configfs = NULL;
+ printk(KERN_INFO "TCM_QLA2XXX[0] - Cleared tcm_qla2xxx_npiv_fabric_configfs\n");
+}
+
+static int __init tcm_qla2xxx_init(void)
+{
+ int ret;
+
+ ret = tcm_qla2xxx_register_configfs();
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static void __exit tcm_qla2xxx_exit(void)
+{
+ tcm_qla2xxx_deregister_configfs();
+}
+
+#ifdef MODULE
+MODULE_DESCRIPTION("TCM QLA2XXX series NPIV enabled fabric driver");
+MODULE_LICENSE("GPL");
+module_init(tcm_qla2xxx_init);
+module_exit(tcm_qla2xxx_exit);
+#endif
diff --git a/drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c b/drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c
new file mode 100644
index 0000000..a79c957
--- /dev/null
+++ b/drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.c
@@ -0,0 +1,853 @@
+/*******************************************************************************
+ * This file contains TCM_QLA2XXX functions for struct target_core_fabrib_ops
+ * for Qlogic 2xxx series target mode HBAs
+ *
+ * © Copyright 2010-2011 RisingTide Systems LLC.
+ *
+ * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
+ *
+ * Author: Nicholas A. Bellinger <nab@...ingtidesystems.com>
+ *
+ * tcm_qla2xxx_parse_wwn() and tcm_qla2xxx_format_wwn() contains code from
+ * the TCM_FC / Open-FCoE.org fabric module.
+ *
+ * Copyright (c) 2010 Cisco Systems, Inc
+ *
+ * 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 <linux/slab.h>
+#include <linux/kthread.h>
+#include <linux/types.h>
+#include <linux/list.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <asm/unaligned.h>
+#include <scsi/scsi.h>
+#include <scsi/scsi_host.h>
+#include <scsi/scsi_device.h>
+#include <scsi/scsi_cmnd.h>
+
+#include <target/target_core_base.h>
+#include <target/target_core_transport.h>
+#include <target/target_core_fabric_ops.h>
+#include <target/target_core_fabric_lib.h>
+#include <target/target_core_device.h>
+#include <target/target_core_tpg.h>
+#include <target/target_core_configfs.h>
+#include <target/target_core_tmr.h>
+
+#include <qla_def.h>
+#include <qla_target.h>
+
+#include "tcm_qla2xxx_base.h"
+#include "tcm_qla2xxx_fabric.h"
+
+int tcm_qla2xxx_check_true(struct se_portal_group *se_tpg)
+{
+ return 1;
+}
+
+int tcm_qla2xxx_check_false(struct se_portal_group *se_tpg)
+{
+ return 0;
+}
+
+/*
+ * Parse WWN.
+ * If strict, we require lower-case hex and colon separators to be sure
+ * the name is the same as what would be generated by ft_format_wwn()
+ * so the name and wwn are mapped one-to-one.
+ */
+ssize_t tcm_qla2xxx_parse_wwn(const char *name, u64 *wwn, int strict)
+{
+ const char *cp;
+ char c;
+ u32 nibble;
+ u32 byte = 0;
+ u32 pos = 0;
+ u32 err;
+
+ *wwn = 0;
+ for (cp = name; cp < &name[TCM_QLA2XXX_NAMELEN - 1]; cp++) {
+ c = *cp;
+ if (c == '\n' && cp[1] == '\0')
+ continue;
+ if (strict && pos++ == 2 && byte++ < 7) {
+ pos = 0;
+ if (c == ':')
+ continue;
+ err = 1;
+ goto fail;
+ }
+ if (c == '\0') {
+ err = 2;
+ if (strict && byte != 8)
+ goto fail;
+ return cp - name;
+ }
+ err = 3;
+ if (isdigit(c))
+ nibble = c - '0';
+ else if (isxdigit(c) && (islower(c) || !strict))
+ nibble = tolower(c) - 'a' + 10;
+ else
+ goto fail;
+ *wwn = (*wwn << 4) | nibble;
+ }
+ err = 4;
+fail:
+ printk(KERN_INFO "err %u len %zu pos %u byte %u\n",
+ err, cp - name, pos, byte);
+ return -1;
+}
+
+ssize_t tcm_qla2xxx_format_wwn(char *buf, size_t len, u64 wwn)
+{
+ u8 b[8];
+
+ put_unaligned_be64(wwn, b);
+ return snprintf(buf, len,
+ "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
+ b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7]);
+}
+
+char *tcm_qla2xxx_get_fabric_name(void)
+{
+ return "qla2xxx";
+}
+
+/*
+ * From drivers/scsi/scsi_transport_fc.c:fc_parse_wwn
+ */
+static int tcm_qla2xxx_npiv_extract_wwn(const char *ns, u64 *nm)
+{
+ unsigned int i, j, value;
+ u8 wwn[8];
+
+ memset(wwn, 0, sizeof(wwn));
+
+ /* Validate and store the new name */
+ for (i = 0, j = 0; i < 16; i++) {
+ value = hex_to_bin(*ns++);
+ if (value >= 0)
+ j = (j << 4) | value;
+ else
+ return -EINVAL;
+
+ if (i % 2) {
+ wwn[i/2] = j & 0xff;
+ j = 0;
+ }
+ }
+
+ *nm = wwn_to_u64(wwn);
+ return 0;
+}
+
+/*
+ * This parsing logic follows drivers/scsi/scsi_transport_fc.c:store_fc_host_vport_create()
+ */
+int tcm_qla2xxx_npiv_parse_wwn(
+ const char *name,
+ size_t count,
+ u64 *wwpn,
+ u64 *wwnn)
+{
+ unsigned int cnt = count;
+ int rc;
+
+ *wwpn = 0;
+ *wwnn = 0;
+
+ /* count may include a LF at end of string */
+ if (name[cnt-1] == '\n')
+ cnt--;
+
+ /* validate we have enough characters for WWPN */
+ if ((cnt != (16+1+16)) || (name[16] != ':'))
+ return -EINVAL;
+
+ rc = tcm_qla2xxx_npiv_extract_wwn(&name[0], wwpn);
+ if (rc != 0)
+ return rc;
+
+ rc = tcm_qla2xxx_npiv_extract_wwn(&name[17], wwnn);
+ if (rc != 0)
+ return rc;
+
+ return 0;
+}
+
+ssize_t tcm_qla2xxx_npiv_format_wwn(char *buf, size_t len, u64 wwpn, u64 wwnn)
+{
+ u8 b[8], b2[8];
+
+ put_unaligned_be64(wwpn, b);
+ put_unaligned_be64(wwnn, b2);
+ return snprintf(buf, len,
+ "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x,"
+ "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x",
+ b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7],
+ b2[0], b2[1], b2[2], b2[3], b2[4], b2[5], b2[6], b2[7]);
+}
+
+char *tcm_qla2xxx_npiv_get_fabric_name(void)
+{
+ return "qla2xxx_npiv";
+}
+
+u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+ u8 proto_id;
+
+ switch (lport->lport_proto_id) {
+ case SCSI_PROTOCOL_FCP:
+ default:
+ proto_id = fc_get_fabric_proto_ident(se_tpg);
+ break;
+ }
+
+ return proto_id;
+}
+
+char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+
+ return &lport->lport_name[0];
+}
+
+char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+
+ return &lport->lport_npiv_name[0];
+}
+
+u16 tcm_qla2xxx_get_tag(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ return tpg->lport_tpgt;
+}
+
+u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *se_tpg)
+{
+ return 1;
+}
+
+u32 tcm_qla2xxx_get_pr_transport_id(
+ struct se_portal_group *se_tpg,
+ struct se_node_acl *se_nacl,
+ struct t10_pr_registration *pr_reg,
+ int *format_code,
+ unsigned char *buf)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+ int ret = 0;
+
+ switch (lport->lport_proto_id) {
+ case SCSI_PROTOCOL_FCP:
+ default:
+ ret = fc_get_pr_transport_id(se_tpg, se_nacl, pr_reg,
+ format_code, buf);
+ break;
+ }
+
+ return ret;
+}
+
+u32 tcm_qla2xxx_get_pr_transport_id_len(
+ struct se_portal_group *se_tpg,
+ struct se_node_acl *se_nacl,
+ struct t10_pr_registration *pr_reg,
+ int *format_code)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+ int ret = 0;
+
+ switch (lport->lport_proto_id) {
+ case SCSI_PROTOCOL_FCP:
+ default:
+ ret = fc_get_pr_transport_id_len(se_tpg, se_nacl, pr_reg,
+ format_code);
+ break;
+ }
+
+ return ret;
+}
+
+char *tcm_qla2xxx_parse_pr_out_transport_id(
+ struct se_portal_group *se_tpg,
+ const char *buf,
+ u32 *out_tid_len,
+ char **port_nexus_ptr)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+ struct tcm_qla2xxx_lport *lport = tpg->lport;
+ char *tid = NULL;
+
+ switch (lport->lport_proto_id) {
+ case SCSI_PROTOCOL_FCP:
+ default:
+ tid = fc_parse_pr_out_transport_id(se_tpg, buf, out_tid_len,
+ port_nexus_ptr);
+ break;
+ }
+
+ return tid;
+}
+
+int tcm_qla2xxx_check_demo_mode(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)->generate_node_acls;
+}
+
+int tcm_qla2xxx_check_demo_mode_cache(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)->cache_dynamic_acls;
+}
+
+int tcm_qla2xxx_check_demo_write_protect(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_write_protect;
+}
+
+int tcm_qla2xxx_check_prod_write_protect(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)->prod_mode_write_protect;
+}
+
+struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_nacl *nacl;
+
+ nacl = kzalloc(sizeof(struct tcm_qla2xxx_nacl), GFP_KERNEL);
+ if (!(nacl)) {
+ printk(KERN_ERR "Unable to alocate struct tcm_qla2xxx_nacl\n");
+ return NULL;
+ }
+
+ return &nacl->se_node_acl;
+}
+
+void tcm_qla2xxx_release_fabric_acl(
+ struct se_portal_group *se_tpg,
+ struct se_node_acl *se_nacl)
+{
+ struct tcm_qla2xxx_nacl *nacl = container_of(se_nacl,
+ struct tcm_qla2xxx_nacl, se_node_acl);
+ kfree(nacl);
+}
+
+u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *se_tpg)
+{
+ struct tcm_qla2xxx_tpg *tpg = container_of(se_tpg,
+ struct tcm_qla2xxx_tpg, se_tpg);
+
+ return tpg->lport_tpgt;
+}
+
+/*
+ * Called from qla_target_template->free_cmd(), and will call
+ * tcm_qla2xxx_release_cmd via normal struct target_core_fabric_ops
+ * release callback.
+ */
+void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *cmd)
+{
+ atomic_set(&cmd->cmd_done, 1);
+ /*
+ * If tcm_qla2xxx_check_stop_free() has already been called, we
+ * are safe to go ahead and call transport_generic_free_cmd()
+ * to release the descriptor.
+ */
+ if (atomic_read(&cmd->cmd_stop_free) != 0)
+ transport_generic_free_cmd(&cmd->se_cmd, 1, 1, 0);
+}
+
+/*
+ * Called from struct target_core_fabric_ops->check_stop_free() context
+ */
+void tcm_qla2xxx_check_stop_free(struct se_cmd *se_cmd)
+{
+ struct qla_tgt_cmd *cmd;
+ struct qla_tgt_mgmt_cmd *mcmd;
+
+ if (se_cmd->se_tmr_req) {
+ mcmd = container_of(se_cmd, struct qla_tgt_mgmt_cmd, se_cmd);
+ /*
+ * Release the associated se_cmd->se_tmr_req and se_cmd
+ * TMR related state now.
+ */
+ transport_generic_free_cmd(se_cmd, 1, 1, 0);
+ qla_tgt_free_mcmd(mcmd);
+ return;
+ }
+
+ cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+ /*
+ * If tcm_qla2xxx_free_cmd() has already been called from the LLD,
+ * it's safe to call transport_generic_free_cmd() to release the
+ * descriptor. Otherwise set cmd->cmd_stop_free=1 and let
+ * tcm_qla2xxx_free_cmd() call transport_generic_free_cmd().
+ */
+ if (atomic_read(&cmd->cmd_done) != 0)
+ transport_generic_free_cmd(se_cmd, 0, 1, 0);
+ else
+ atomic_set(&cmd->cmd_stop_free, 1);
+}
+
+/*
+ * Callback from TCM Core to release underlying fabric descriptor
+ */
+void tcm_qla2xxx_release_cmd(struct se_cmd *se_cmd)
+{
+ struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+
+ if (se_cmd->se_tmr_req != NULL)
+ return;
+
+ qla_tgt_free_cmd(cmd);
+}
+
+int tcm_qla2xxx_shutdown_session(struct se_session *se_sess)
+{
+ struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
+
+ if (!sess) {
+ printk("se_sess->fabric_sess_ptr is NULL\n");
+ dump_stack();
+ return 0;
+ }
+ return 1;
+}
+
+extern int tcm_qla2xxx_clear_nacl_from_fcport_map(struct se_node_acl *);
+
+void tcm_qla2xxx_close_session(struct se_session *se_sess)
+{
+ struct se_node_acl *se_nacl = se_sess->se_node_acl;
+ struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
+ struct scsi_qla_host *vha;
+ unsigned long flags;
+
+ if (!sess) {
+ printk(KERN_ERR "se_sess->fabric_sess_ptr is NULL\n");
+ dump_stack();
+ return;
+ }
+ vha = sess->vha;
+
+ spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+ tcm_qla2xxx_clear_nacl_from_fcport_map(se_nacl);
+ qla_tgt_sess_put(sess);
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+}
+
+void tcm_qla2xxx_stop_session(struct se_session *se_sess, int sess_sleep , int conn_sleep)
+{
+ struct qla_tgt_sess *sess = se_sess->fabric_sess_ptr;
+ struct scsi_qla_host *vha;
+ unsigned long flags;
+
+ if (!sess) {
+ printk(KERN_ERR "se_sess->fabric_sess_ptr is NULL\n");
+ dump_stack();
+ return;
+ }
+ vha = sess->vha;
+
+ spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+ tcm_qla2xxx_clear_nacl_from_fcport_map(se_sess->se_node_acl);
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+}
+
+void tcm_qla2xxx_reset_nexus(struct se_session *se_sess)
+{
+ return;
+}
+
+int tcm_qla2xxx_sess_logged_in(struct se_session *se_sess)
+{
+ return 0;
+}
+
+u32 tcm_qla2xxx_sess_get_index(struct se_session *se_sess)
+{
+ return 0;
+}
+
+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 = se_cmd->data_direction;
+ /*
+ * Setup the struct se_task->task_sg[] chained SG list
+ */
+ if ((se_cmd->se_cmd_flags & SCF_SCSI_DATA_SG_IO_CDB) ||
+ (se_cmd->se_cmd_flags & SCF_SCSI_CONTROL_SG_IO_CDB)) {
+ transport_do_task_sg_chain(se_cmd);
+
+ cmd->sg_cnt = T_TASK(se_cmd)->t_tasks_sg_chained_no;
+ cmd->sg = T_TASK(se_cmd)->t_tasks_sg_chained;
+ } else if (se_cmd->se_cmd_flags & SCF_SCSI_CONTROL_NONSG_IO_CDB) {
+ /*
+ * Use T_TASK(se_cmd)->t_tasks_sg_bounce for control CDBs
+ * using a contigious buffer
+ */
+ sg_init_table(&T_TASK(se_cmd)->t_tasks_sg_bounce, 1);
+ sg_set_buf(&T_TASK(se_cmd)->t_tasks_sg_bounce,
+ T_TASK(se_cmd)->t_task_buf, se_cmd->data_length);
+ cmd->sg_cnt = 1;
+ cmd->sg = &T_TASK(se_cmd)->t_tasks_sg_bounce;
+ } else {
+ printk(KERN_ERR "Unknown se_cmd_flags: 0x%08x in"
+ " tcm_qla2xxx_write_pending()\n", se_cmd->se_cmd_flags);
+ BUG();
+ }
+ /*
+ * qla_target.c:qla_tgt_rdy_to_xfer() will call pci_map_sg() to setup
+ * the SGL mappings into PCIe memory for incoming FCP WRITE data.
+ */
+ return qla_tgt_rdy_to_xfer(cmd);
+}
+
+int tcm_qla2xxx_write_pending_status(struct se_cmd *se_cmd)
+{
+ return 0;
+}
+
+void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *nacl)
+{
+ return;
+}
+
+u32 tcm_qla2xxx_get_task_tag(struct se_cmd *se_cmd)
+{
+ struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+
+ return cmd->tag;
+}
+
+int tcm_qla2xxx_get_cmd_state(struct se_cmd *se_cmd)
+{
+ return 0;
+}
+
+void tcm_qla2xxx_new_cmd_failure(struct se_cmd *se_cmd)
+{
+ return;
+}
+
+/*
+ * Main entry point for incoming ATIO packets from qla_target.c
+ * and qla2xxx LLD code.
+ */
+int tcm_qla2xxx_handle_cmd(scsi_qla_host_t *vha, struct qla_tgt_cmd *cmd,
+ uint32_t lun, uint32_t data_length,
+ int fcp_task_attr, int data_dir, int bidi)
+{
+ struct se_cmd *se_cmd = &cmd->se_cmd;
+ struct se_session *se_sess;
+ struct se_portal_group *se_tpg;
+ struct qla_tgt_sess *sess;
+
+ sess = cmd->sess;
+ if (!sess) {
+ printk(KERN_ERR "Unable to locate struct qla_tgt_sess from qla_tgt_cmd\n");
+ return -EINVAL;
+ }
+
+ se_sess = sess->se_sess;
+ if (!se_sess) {
+ printk(KERN_ERR "Unable to locate active struct se_session\n");
+ return -EINVAL;
+ }
+ se_tpg = se_sess->se_tpg;
+
+ /*
+ * Initialize struct se_cmd descriptor from target_core_mod infrastructure
+ */
+ transport_init_se_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess,
+ data_length, data_dir,
+ fcp_task_attr, &cmd->sense_buffer[0]);
+ /*
+ * Signal BIDI usage with T_TASK(cmd)->t_tasks_bidi
+ */
+ if (bidi)
+ T_TASK(se_cmd)->t_tasks_bidi = 1;
+ /*
+ * Locate the struct se_lun pointer and attach it to struct se_cmd
+ */
+ if (transport_get_lun_for_cmd(se_cmd, NULL, lun) < 0) {
+ /*
+ * Clear qla_tgt_cmd->locked_rsp as ha->hardware_lock
+ * is already held here..
+ */
+ if (spin_is_locked(&cmd->vha->hw->hardware_lock))
+ cmd->locked_rsp = 0;
+
+ /* NON_EXISTENT_LUN */
+ transport_send_check_condition_and_sense(se_cmd,
+ se_cmd->scsi_sense_reason, 0);
+ return 0;
+ }
+ /*
+ * Queue up the newly allocated to be processed in TCM thread context.
+ */
+ transport_device_setup_cmd(se_cmd);
+ /*
+ * Queue up the newly allocated to be processed in TCM thread context.
+ */
+ transport_generic_handle_cdb_map(se_cmd);
+ return 0;
+}
+
+int tcm_qla2xxx_new_cmd_map(struct se_cmd *se_cmd)
+{
+ struct qla_tgt_cmd *cmd = container_of(se_cmd, struct qla_tgt_cmd, se_cmd);
+ scsi_qla_host_t *vha = cmd->vha;
+ struct qla_hw_data *ha = vha->hw;
+ unsigned char *cdb;
+ int ret;
+
+ if (IS_FWI2_CAPABLE(ha)) {
+ atio7_entry_t *atio = &cmd->atio.atio7;
+ cdb = &atio->fcp_cmnd.cdb[0];
+ } else {
+ atio_entry_t *atio = &cmd->atio.atio2x;
+ cdb = &atio->cdb[0];
+ }
+
+ /*
+ * Allocate the necessary tasks to complete the received CDB+data
+ */
+ ret = transport_generic_allocate_tasks(se_cmd, cdb);
+ if (ret == -1) {
+ /* Out of Resources */
+ transport_send_check_condition_and_sense(se_cmd,
+ TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE, 0);
+ return 0;
+ } else if (ret == -2) {
+ /*
+ * Handle case for SAM_STAT_RESERVATION_CONFLICT
+ */
+ if (se_cmd->se_cmd_flags & SCF_SCSI_RESERVATION_CONFLICT) {
+ tcm_qla2xxx_queue_status(se_cmd);
+ return 0;
+ }
+ /*
+ * Otherwise, return SAM_STAT_CHECK_CONDITION and return
+ * sense data.
+ */
+ transport_send_check_condition_and_sense(se_cmd,
+ se_cmd->scsi_sense_reason, 0);
+ return 0;
+ }
+ /*
+ * drivers/target/target_core_transport.c:transport_processing_thread()
+ * falls through to TRANSPORT_NEW_CMD.
+ */
+ return 0;
+}
+
+/*
+ * Called from qla_target.c:qla_tgt_do_ctio_completion()
+ */
+int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *cmd)
+{
+ /*
+ * We now tell TCM to queue this WRITE CDB with TRANSPORT_PROCESS_WRITE
+ * status to the backstore processing thread.
+ */
+ return transport_generic_handle_data(&cmd->se_cmd);
+}
+
+/*
+ * Called from qla_target.c:qla_tgt_issue_task_mgmt()
+ */
+int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *mcmd, uint32_t lun, uint8_t tmr_func)
+{
+ struct qla_tgt_sess *sess = mcmd->sess;
+ struct se_session *se_sess = sess->se_sess;
+ struct se_portal_group *se_tpg = se_sess->se_tpg;
+ struct se_cmd *se_cmd = &mcmd->se_cmd;
+ /*
+ * Initialize struct se_cmd descriptor from target_core_mod infrastructure
+ */
+ transport_init_se_cmd(se_cmd, se_tpg->se_tpg_tfo, se_sess, 0,
+ DMA_NONE, 0, NULL);
+ /*
+ * Allocate the TCM TMR
+ */
+ se_cmd->se_tmr_req = core_tmr_alloc_req(se_cmd, (void *)mcmd, tmr_func);
+ if (!se_cmd->se_tmr_req)
+ return -ENOMEM;
+ /*
+ * Save the se_tmr_req for qla_tgt_xmit_tm_rsp() callback into LLD code
+ */
+ mcmd->se_tmr_req = se_cmd->se_tmr_req;
+ /*
+ * Locate the underlying TCM struct se_lun from sc->device->lun
+ */
+ if (transport_get_lun_for_tmr(se_cmd, lun) < 0) {
+ transport_generic_free_cmd(se_cmd, 1, 1, 0);
+ return -EINVAL;
+ }
+ /*
+ * Queue the TMR associated se_cmd into TCM Core for processing
+ */
+ return transport_generic_handle_tmr(se_cmd);
+}
+
+int tcm_qla2xxx_queue_data_in(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 = se_cmd->data_direction;
+ cmd->aborted = atomic_read(&T_TASK(se_cmd)->t_transport_aborted);
+ /*
+ * Setup the struct se_task->task_sg[] chained SG list
+ */
+ if ((se_cmd->se_cmd_flags & SCF_SCSI_DATA_SG_IO_CDB) ||
+ (se_cmd->se_cmd_flags & SCF_SCSI_CONTROL_SG_IO_CDB)) {
+ transport_do_task_sg_chain(se_cmd);
+
+ cmd->sg_cnt = T_TASK(se_cmd)->t_tasks_sg_chained_no;
+ cmd->sg = T_TASK(se_cmd)->t_tasks_sg_chained;
+ } else if (se_cmd->se_cmd_flags & SCF_SCSI_CONTROL_NONSG_IO_CDB) {
+ /*
+ * Use T_TASK(se_cmd)->t_tasks_sg_bounce for control CDBs
+ * using a contigious buffer
+ */
+ sg_init_table(&T_TASK(se_cmd)->t_tasks_sg_bounce, 1);
+ sg_set_buf(&T_TASK(se_cmd)->t_tasks_sg_bounce,
+ T_TASK(se_cmd)->t_task_buf, se_cmd->data_length);
+
+ cmd->sg_cnt = 1;
+ cmd->sg = &T_TASK(se_cmd)->t_tasks_sg_bounce;
+ } else {
+ cmd->sg_cnt = 0;
+ cmd->sg = NULL;
+ }
+
+ cmd->offset = 0;
+
+ /*
+ * Now queue completed DATA_IN the qla2xxx LLD and response ring
+ */
+ return qla2xxx_xmit_response(cmd, QLA_TGT_XMIT_DATA|QLA_TGT_XMIT_STATUS,
+ se_cmd->scsi_status);
+}
+
+int tcm_qla2xxx_queue_status(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->sg = NULL;
+ cmd->sg_cnt = 0;
+ cmd->offset = 0;
+ cmd->dma_data_direction = se_cmd->data_direction;
+ cmd->aborted = atomic_read(&T_TASK(se_cmd)->t_transport_aborted);
+
+ /*
+ * Now queue status response to qla2xxx LLD code and response ring
+ */
+ return qla2xxx_xmit_response(cmd, QLA_TGT_XMIT_STATUS, se_cmd->scsi_status);
+}
+
+int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *se_cmd)
+{
+ struct se_tmr_req *se_tmr = se_cmd->se_tmr_req;
+ struct qla_tgt_mgmt_cmd *mcmd = container_of(se_cmd,
+ struct qla_tgt_mgmt_cmd, se_cmd);
+
+ printk("queue_tm_rsp: mcmd: %p func: 0x%02x response: 0x%02x\n",
+ mcmd, se_tmr->function, se_tmr->response);
+ /*
+ * Do translation between TCM TM response codes and
+ * QLA2xxx FC TM response codes.
+ */
+ switch (se_tmr->response) {
+ case TMR_FUNCTION_COMPLETE:
+ mcmd->fc_tm_rsp = FC_TM_SUCCESS;
+ break;
+ case TMR_TASK_DOES_NOT_EXIST:
+ mcmd->fc_tm_rsp = FC_TM_BAD_CMD;
+ break;
+ case TMR_FUNCTION_REJECTED:
+ mcmd->fc_tm_rsp = FC_TM_REJECT;
+ break;
+ case TMR_LUN_DOES_NOT_EXIST:
+ default:
+ mcmd->fc_tm_rsp = FC_TM_FAILED;
+ break;
+ }
+ /*
+ * Queue the TM response to QLA2xxx LLD to build a
+ * CTIO response packet.
+ */
+ qla_tgt_xmit_tm_rsp(mcmd);
+
+ return 0;
+}
+
+u16 tcm_qla2xxx_get_fabric_sense_len(void)
+{
+ return 0;
+}
+
+u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length)
+{
+ return 0;
+}
+
+int tcm_qla2xxx_is_state_remove(struct se_cmd *se_cmd)
+{
+ return 0;
+}
+
+u64 tcm_qla2xxx_pack_lun(unsigned int lun)
+{
+ WARN_ON(lun >= 256);
+ /* Caller wants this byte-swapped */
+ return cpu_to_le64((lun & 0xff) << 8);
+}
diff --git a/drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.h b/drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.h
new file mode 100644
index 0000000..6de2277
--- /dev/null
+++ b/drivers/target/tcm_qla2xxx/tcm_qla2xxx_fabric.h
@@ -0,0 +1,53 @@
+extern int tcm_qla2xxx_check_true(struct se_portal_group *);
+extern int tcm_qla2xxx_check_false(struct se_portal_group *);
+extern ssize_t tcm_qla2xxx_parse_wwn(const char *, u64 *, int);
+extern ssize_t tcm_qla2xxx_format_wwn(char *, size_t, u64);
+extern char *tcm_qla2xxx_get_fabric_name(void);
+extern int tcm_qla2xxx_npiv_parse_wwn(const char *name, size_t, u64 *, u64 *);
+extern ssize_t tcm_qla2xxx_npiv_format_wwn(char *, size_t, u64, u64);
+extern char *tcm_qla2xxx_npiv_get_fabric_name(void);
+extern u8 tcm_qla2xxx_get_fabric_proto_ident(struct se_portal_group *);
+extern char *tcm_qla2xxx_get_fabric_wwn(struct se_portal_group *);
+extern char *tcm_qla2xxx_npiv_get_fabric_wwn(struct se_portal_group *);
+extern u16 tcm_qla2xxx_get_tag(struct se_portal_group *);
+extern u32 tcm_qla2xxx_get_default_depth(struct se_portal_group *);
+extern u32 tcm_qla2xxx_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
+ struct t10_pr_registration *, int *, unsigned char *);
+extern u32 tcm_qla2xxx_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
+ struct t10_pr_registration *, int *);
+extern char *tcm_qla2xxx_parse_pr_out_transport_id(struct se_portal_group *, const char *,
+ u32 *, char **);
+extern int tcm_qla2xxx_check_demo_mode(struct se_portal_group *);
+extern int tcm_qla2xxx_check_demo_mode_cache(struct se_portal_group *);
+extern int tcm_qla2xxx_check_demo_write_protect(struct se_portal_group *);
+extern int tcm_qla2xxx_check_prod_write_protect(struct se_portal_group *);
+extern struct se_node_acl *tcm_qla2xxx_alloc_fabric_acl(struct se_portal_group *);
+extern void tcm_qla2xxx_release_fabric_acl(struct se_portal_group *, struct se_node_acl *);
+extern u32 tcm_qla2xxx_tpg_get_inst_index(struct se_portal_group *);
+extern void tcm_qla2xxx_free_cmd(struct qla_tgt_cmd *);
+extern void tcm_qla2xxx_check_stop_free(struct se_cmd *);
+extern void tcm_qla2xxx_release_cmd(struct se_cmd *);
+extern int tcm_qla2xxx_shutdown_session(struct se_session *);
+extern void tcm_qla2xxx_close_session(struct se_session *);
+extern void tcm_qla2xxx_stop_session(struct se_session *, int, int);
+extern void tcm_qla2xxx_reset_nexus(struct se_session *);
+extern int tcm_qla2xxx_sess_logged_in(struct se_session *);
+extern u32 tcm_qla2xxx_sess_get_index(struct se_session *);
+extern int tcm_qla2xxx_write_pending(struct se_cmd *);
+extern int tcm_qla2xxx_write_pending_status(struct se_cmd *);
+extern void tcm_qla2xxx_set_default_node_attrs(struct se_node_acl *);
+extern u32 tcm_qla2xxx_get_task_tag(struct se_cmd *);
+extern int tcm_qla2xxx_get_cmd_state(struct se_cmd *);
+extern void tcm_qla2xxx_new_cmd_failure(struct se_cmd *);
+extern int tcm_qla2xxx_handle_cmd(struct scsi_qla_host *, struct qla_tgt_cmd *,
+ uint32_t, uint32_t, int, int, int);
+extern int tcm_qla2xxx_new_cmd_map(struct se_cmd *);
+extern int tcm_qla2xxx_handle_data(struct qla_tgt_cmd *);
+extern int tcm_qla2xxx_handle_tmr(struct qla_tgt_mgmt_cmd *, uint32_t, uint8_t);
+extern int tcm_qla2xxx_queue_data_in(struct se_cmd *);
+extern int tcm_qla2xxx_queue_status(struct se_cmd *);
+extern int tcm_qla2xxx_queue_tm_rsp(struct se_cmd *);
+extern u16 tcm_qla2xxx_get_fabric_sense_len(void);
+extern u16 tcm_qla2xxx_set_fabric_sense_len(struct se_cmd *, u32);
+extern int tcm_qla2xxx_is_state_remove(struct se_cmd *);
+extern u64 tcm_qla2xxx_pack_lun(unsigned int);
--
1.7.4.1
--
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