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authorNicholas Bellinger <nab@linux-iscsi.org>2014-01-15 08:38:58 +0400
committerNicholas Bellinger <nab@linux-iscsi.org>2014-01-19 06:22:12 +0400
commit49a47f2cafbe4ca3839f8ae99c6fdeffd5fcaf45 (patch)
tree51f53fe13179948bce86f60535d4259071735f51 /drivers/scsi
parent0e8cd71ceca4c15ef544e3af01248bc869c28d8f (diff)
downloadlinux-49a47f2cafbe4ca3839f8ae99c6fdeffd5fcaf45.tar.xz
qla2xxx: Configure NPIV fc_vport via tcm_qla2xxx_npiv_make_lport
This patch changes qla2xxx qlt_lport_register() code to accept target_lport_ptr + npiv_wwpn + npiv_wwnn parameters, and updates tcm_qla2xxx to use the new tcm_qla2xxx_lport_register_npiv_cb() callback for invoking fc_vport_create() from configfs context via tcm_qla2xxx_npiv_make_lport() code. In order for this to work, the qlt_lport_register() callback is now called without holding qla_tgt_mutex, as the fc_vport creation process will call qlt_vport_create() -> qlt_add_target(), which already expects to acquire it. It enforces /sys/kernel/config/target/qla2xxx_npiv/$NPIV_WWPN naming in the following format: $PHYSICAL_WWPN@$NPIV_WWPN:$NPIV_WWNN and assumes the $PHYSICAL_WWPN in question has already had been configured for target mode in non NPIV mode. Finally, it updates existing tcm_qla2xxx_lport_register_cb() logic to setup the non NPIV assignments that have now been moved out of qlt_lport_register() code. Cc: Sawan Chandak <sawan.chandak@qlogic.com> Cc: Quinn Tran <quinn.tran@qlogic.com> Cc: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/qla2xxx/qla_target.c25
-rw-r--r--drivers/scsi/qla2xxx/qla_target.h4
-rw-r--r--drivers/scsi/qla2xxx/tcm_qla2xxx.c106
3 files changed, 88 insertions, 47 deletions
diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
index 34ed246aa0db..b596f8b2cfc0 100644
--- a/drivers/scsi/qla2xxx/qla_target.c
+++ b/drivers/scsi/qla2xxx/qla_target.c
@@ -4235,8 +4235,9 @@ static void qlt_lport_dump(struct scsi_qla_host *vha, u64 wwpn,
* @callback: lport initialization callback for tcm_qla2xxx code
* @target_lport_ptr: pointer for tcm_qla2xxx specific lport data
*/
-int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
- int (*callback)(struct scsi_qla_host *), void *target_lport_ptr)
+int qlt_lport_register(void *target_lport_ptr, u64 phys_wwpn,
+ u64 npiv_wwpn, u64 npiv_wwnn,
+ int (*callback)(struct scsi_qla_host *, void *, u64, u64))
{
struct qla_tgt *tgt;
struct scsi_qla_host *vha;
@@ -4259,7 +4260,7 @@ int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
continue;
spin_lock_irqsave(&ha->hardware_lock, flags);
- if (host->active_mode & MODE_TARGET) {
+ if ((!npiv_wwpn || !npiv_wwnn) && host->active_mode & MODE_TARGET) {
pr_debug("MODE_TARGET already active on qla2xxx(%d)\n",
host->host_no);
spin_unlock_irqrestore(&ha->hardware_lock, flags);
@@ -4273,24 +4274,18 @@ int qlt_lport_register(struct qla_tgt_func_tmpl *qla_tgt_ops, u64 wwpn,
" qla2xxx scsi_host\n");
continue;
}
- qlt_lport_dump(vha, wwpn, b);
+ qlt_lport_dump(vha, phys_wwpn, b);
if (memcmp(vha->port_name, b, WWN_SIZE)) {
scsi_host_put(host);
continue;
}
- /*
- * Setup passed parameters ahead of invoking callback
- */
- ha->tgt.tgt_ops = qla_tgt_ops;
- vha->vha_tgt.target_lport_ptr = target_lport_ptr;
- rc = (*callback)(vha);
- if (rc != 0) {
- ha->tgt.tgt_ops = NULL;
- vha->vha_tgt.target_lport_ptr = NULL;
- scsi_host_put(host);
- }
mutex_unlock(&qla_tgt_mutex);
+
+ rc = (*callback)(vha, target_lport_ptr, npiv_wwpn, npiv_wwnn);
+ if (rc != 0)
+ scsi_host_put(host);
+
return rc;
}
mutex_unlock(&qla_tgt_mutex);
diff --git a/drivers/scsi/qla2xxx/qla_target.h b/drivers/scsi/qla2xxx/qla_target.h
index b33e411f28a0..1d10eecad499 100644
--- a/drivers/scsi/qla2xxx/qla_target.h
+++ b/drivers/scsi/qla2xxx/qla_target.h
@@ -932,8 +932,8 @@ void qlt_disable_vha(struct scsi_qla_host *);
*/
extern int qlt_add_target(struct qla_hw_data *, struct scsi_qla_host *);
extern int qlt_remove_target(struct qla_hw_data *, struct scsi_qla_host *);
-extern int qlt_lport_register(struct qla_tgt_func_tmpl *, u64,
- int (*callback)(struct scsi_qla_host *), void *);
+extern int qlt_lport_register(void *, u64, u64, u64,
+ int (*callback)(struct scsi_qla_host *, void *, u64, u64));
extern void qlt_lport_deregister(struct scsi_qla_host *);
extern void qlt_unreg_sess(struct qla_tgt_sess *);
extern void qlt_fc_port_added(struct scsi_qla_host *, fc_port_t *);
diff --git a/drivers/scsi/qla2xxx/tcm_qla2xxx.c b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
index 113ca95d47df..75a141bbe74d 100644
--- a/drivers/scsi/qla2xxx/tcm_qla2xxx.c
+++ b/drivers/scsi/qla2xxx/tcm_qla2xxx.c
@@ -1559,14 +1559,18 @@ static int tcm_qla2xxx_init_lport(struct tcm_qla2xxx_lport *lport)
return 0;
}
-static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha)
+static int tcm_qla2xxx_lport_register_cb(struct scsi_qla_host *vha,
+ void *target_lport_ptr,
+ u64 npiv_wwpn, u64 npiv_wwnn)
{
- struct tcm_qla2xxx_lport *lport;
+ struct qla_hw_data *ha = vha->hw;
+ struct tcm_qla2xxx_lport *lport =
+ (struct tcm_qla2xxx_lport *)target_lport_ptr;
/*
- * Setup local pointer to vha, NPIV VP pointer (if present) and
- * vha->tcm_lport pointer
+ * Setup tgt_ops, local pointer to vha and target_lport_ptr
*/
- lport = (struct tcm_qla2xxx_lport *)vha->vha_tgt.target_lport_ptr;
+ ha->tgt.tgt_ops = &tcm_qla2xxx_template;
+ vha->vha_tgt.target_lport_ptr = target_lport_ptr;
lport->qla_vha = vha;
return 0;
@@ -1598,8 +1602,8 @@ static struct se_wwn *tcm_qla2xxx_make_lport(
if (ret != 0)
goto out;
- ret = qlt_lport_register(&tcm_qla2xxx_template, wwpn,
- tcm_qla2xxx_lport_register_cb, lport);
+ ret = qlt_lport_register(lport, wwpn, 0, 0,
+ tcm_qla2xxx_lport_register_cb);
if (ret != 0)
goto out_lport;
@@ -1637,20 +1641,70 @@ static void tcm_qla2xxx_drop_lport(struct se_wwn *wwn)
kfree(lport);
}
+static int tcm_qla2xxx_lport_register_npiv_cb(struct scsi_qla_host *base_vha,
+ void *target_lport_ptr,
+ u64 npiv_wwpn, u64 npiv_wwnn)
+{
+ struct fc_vport *vport;
+ struct Scsi_Host *sh = base_vha->host;
+ struct scsi_qla_host *npiv_vha;
+ struct tcm_qla2xxx_lport *lport =
+ (struct tcm_qla2xxx_lport *)target_lport_ptr;
+ struct fc_vport_identifiers vport_id;
+
+ if (!qla_tgt_mode_enabled(base_vha)) {
+ pr_err("qla2xxx base_vha not enabled for target mode\n");
+ return -EPERM;
+ }
+
+ memset(&vport_id, 0, sizeof(vport_id));
+ vport_id.port_name = npiv_wwpn;
+ vport_id.node_name = npiv_wwnn;
+ vport_id.roles = FC_PORT_ROLE_FCP_INITIATOR;
+ vport_id.vport_type = FC_PORTTYPE_NPIV;
+ vport_id.disable = false;
+
+ vport = fc_vport_create(sh, 0, &vport_id);
+ if (!vport) {
+ pr_err("fc_vport_create failed for qla2xxx_npiv\n");
+ return -ENODEV;
+ }
+ /*
+ * Setup local pointer to NPIV vhba + target_lport_ptr
+ */
+ npiv_vha = (struct scsi_qla_host *)vport->dd_data;
+ npiv_vha->vha_tgt.target_lport_ptr = target_lport_ptr;
+ lport->qla_vha = npiv_vha;
+
+ scsi_host_get(npiv_vha->host);
+ return 0;
+}
+
+
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;
- u64 npiv_wwpn, npiv_wwnn;
+ u64 phys_wwpn, npiv_wwpn, npiv_wwnn;
+ char *p, tmp[128];
int ret;
- struct scsi_qla_host *vha = NULL;
- struct qla_hw_data *ha = NULL;
- scsi_qla_host_t *base_vha = NULL;
- if (tcm_qla2xxx_npiv_parse_wwn(name, strlen(name)+1,
- &npiv_wwpn, &npiv_wwnn) < 0)
+ snprintf(tmp, 128, "%s", name);
+
+ p = strchr(tmp, '@');
+ if (!p) {
+ pr_err("Unable to locate NPIV '@' seperator\n");
+ return ERR_PTR(-EINVAL);
+ }
+ *p++ = '\0';
+
+ if (tcm_qla2xxx_parse_wwn(tmp, &phys_wwpn, 1) < 0)
+ return ERR_PTR(-EINVAL);
+
+ if (tcm_qla2xxx_npiv_parse_wwn(p, strlen(p)+1,
+ &npiv_wwpn, &npiv_wwnn) < 0)
return ERR_PTR(-EINVAL);
lport = kzalloc(sizeof(struct tcm_qla2xxx_lport), GFP_KERNEL);
@@ -1668,21 +1722,11 @@ static struct se_wwn *tcm_qla2xxx_npiv_make_lport(
if (ret != 0)
goto out;
- ret = qlt_lport_register(&tcm_qla2xxx_template, npiv_wwpn,
- tcm_qla2xxx_lport_register_cb, lport);
-
+ ret = qlt_lport_register(lport, phys_wwpn, npiv_wwpn, npiv_wwnn,
+ tcm_qla2xxx_lport_register_npiv_cb);
if (ret != 0)
goto out_lport;
- vha = lport->qla_vha;
- ha = vha->hw;
- base_vha = pci_get_drvdata(ha->pdev);
-
- if (!qla_tgt_mode_enabled(base_vha)) {
- ret = -EPERM;
- goto out_lport;
- }
-
return &lport->lport_wwn;
out_lport:
vfree(lport->lport_loopid_map);
@@ -1696,14 +1740,16 @@ 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;
+ struct scsi_qla_host *npiv_vha = lport->qla_vha;
+ struct qla_hw_data *ha = npiv_vha->hw;
+ scsi_qla_host_t *base_vha = pci_get_drvdata(ha->pdev);
+
+ scsi_host_put(npiv_vha->host);
/*
* Notify libfc that we want to release the vha->fc_vport
*/
- fc_vport_terminate(vha->fc_vport);
-
- scsi_host_put(sh);
+ fc_vport_terminate(npiv_vha->fc_vport);
+ scsi_host_put(base_vha->host);
kfree(lport);
}