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path: root/drivers/scsi/lpfc/lpfc_vport.c
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Diffstat (limited to 'drivers/scsi/lpfc/lpfc_vport.c')
-rw-r--r--drivers/scsi/lpfc/lpfc_vport.c328
1 files changed, 283 insertions, 45 deletions
diff --git a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c
index 109f89d9883..a87ee33f4f2 100644
--- a/drivers/scsi/lpfc/lpfc_vport.c
+++ b/drivers/scsi/lpfc/lpfc_vport.c
@@ -1,7 +1,7 @@
/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
- * Copyright (C) 2004-2008 Emulex. All rights reserved. *
+ * Copyright (C) 2004-2013 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.emulex.com *
* Portions Copyright (C) 2004-2005 Christoph Hellwig *
@@ -26,14 +26,18 @@
#include <linux/interrupt.h>
#include <linux/kthread.h>
#include <linux/pci.h>
+#include <linux/slab.h>
#include <linux/spinlock.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
+#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_sli.h"
+#include "lpfc_sli4.h"
+#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
@@ -76,10 +80,10 @@ inline void lpfc_vport_set_state(struct lpfc_vport *vport,
}
}
-static int
+int
lpfc_alloc_vpi(struct lpfc_hba *phba)
{
- int vpi;
+ unsigned long vpi;
spin_lock_irq(&phba->hbalock);
/* Start at bit 1 because vpi zero is reserved for the physical port */
@@ -88,6 +92,8 @@ lpfc_alloc_vpi(struct lpfc_hba *phba)
vpi = 0;
else
set_bit(vpi, phba->vpi_bmask);
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ phba->sli4_hba.max_cfg_param.vpi_used++;
spin_unlock_irq(&phba->hbalock);
return vpi;
}
@@ -95,8 +101,12 @@ lpfc_alloc_vpi(struct lpfc_hba *phba)
static void
lpfc_free_vpi(struct lpfc_hba *phba, int vpi)
{
+ if (vpi == 0)
+ return;
spin_lock_irq(&phba->hbalock);
clear_bit(vpi, phba->vpi_bmask);
+ if (phba->sli_rev == LPFC_SLI_REV4)
+ phba->sli4_hba.max_cfg_param.vpi_used--;
spin_unlock_irq(&phba->hbalock);
}
@@ -112,9 +122,14 @@ lpfc_vport_sparm(struct lpfc_hba *phba, struct lpfc_vport *vport)
if (!pmb) {
return -ENOMEM;
}
- mb = &pmb->mb;
+ mb = &pmb->u.mb;
+
+ rc = lpfc_read_sparam(phba, pmb, vport->vpi);
+ if (rc) {
+ mempool_free(pmb, phba->mbox_mem_pool);
+ return -ENOMEM;
+ }
- lpfc_read_sparam(phba, pmb, vport->vpi);
/*
* Grab buffer pointer and clear context1 so we can use
* lpfc_sli_issue_box_wait
@@ -204,6 +219,74 @@ lpfc_unique_wwpn(struct lpfc_hba *phba, struct lpfc_vport *new_vport)
return 1;
}
+/**
+ * lpfc_discovery_wait - Wait for driver discovery to quiesce
+ * @vport: The virtual port for which this call is being executed.
+ *
+ * This driver calls this routine specifically from lpfc_vport_delete
+ * to enforce a synchronous execution of vport
+ * delete relative to discovery activities. The
+ * lpfc_vport_delete routine should not return until it
+ * can reasonably guarantee that discovery has quiesced.
+ * Post FDISC LOGO, the driver must wait until its SAN teardown is
+ * complete and all resources recovered before allowing
+ * cleanup.
+ *
+ * This routine does not require any locks held.
+ **/
+static void lpfc_discovery_wait(struct lpfc_vport *vport)
+{
+ struct lpfc_hba *phba = vport->phba;
+ uint32_t wait_flags = 0;
+ unsigned long wait_time_max;
+ unsigned long start_time;
+
+ wait_flags = FC_RSCN_MODE | FC_RSCN_DISCOVERY | FC_NLP_MORE |
+ FC_RSCN_DEFERRED | FC_NDISC_ACTIVE | FC_DISC_TMO;
+
+ /*
+ * The time constraint on this loop is a balance between the
+ * fabric RA_TOV value and dev_loss tmo. The driver's
+ * devloss_tmo is 10 giving this loop a 3x multiplier minimally.
+ */
+ wait_time_max = msecs_to_jiffies(((phba->fc_ratov * 3) + 3) * 1000);
+ wait_time_max += jiffies;
+ start_time = jiffies;
+ while (time_before(jiffies, wait_time_max)) {
+ if ((vport->num_disc_nodes > 0) ||
+ (vport->fc_flag & wait_flags) ||
+ ((vport->port_state > LPFC_VPORT_FAILED) &&
+ (vport->port_state < LPFC_VPORT_READY))) {
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
+ "1833 Vport discovery quiesce Wait:"
+ " state x%x fc_flags x%x"
+ " num_nodes x%x, waiting 1000 msecs"
+ " total wait msecs x%x\n",
+ vport->port_state, vport->fc_flag,
+ vport->num_disc_nodes,
+ jiffies_to_msecs(jiffies - start_time));
+ msleep(1000);
+ } else {
+ /* Base case. Wait variants satisfied. Break out */
+ lpfc_printf_vlog(vport, KERN_INFO, LOG_VPORT,
+ "1834 Vport discovery quiesced:"
+ " state x%x fc_flags x%x"
+ " wait msecs x%x\n",
+ vport->port_state, vport->fc_flag,
+ jiffies_to_msecs(jiffies
+ - start_time));
+ break;
+ }
+ }
+
+ if (time_after(jiffies, wait_time_max))
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
+ "1835 Vport discovery quiesce failed:"
+ " state x%x fc_flags x%x wait msecs x%x\n",
+ vport->port_state, vport->fc_flag,
+ jiffies_to_msecs(jiffies - start_time));
+}
+
int
lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
{
@@ -216,10 +299,8 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
int vpi;
int rc = VPORT_ERROR;
int status;
- int size;
- if ((phba->sli_rev < 3) ||
- !(phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)) {
+ if ((phba->sli_rev < 3) || !(phba->cfg_enable_npiv)) {
lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
"1808 Create VPORT failed: "
"NPIV is not enabled: SLImode:%d\n",
@@ -238,7 +319,6 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
goto error_out;
}
-
/* Assign an unused board number */
if ((instance = lpfc_get_instance()) < 0) {
lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
@@ -277,26 +357,8 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
goto error_out;
}
- memcpy(vport->fc_portname.u.wwn, vport->fc_sparam.portName.u.wwn, 8);
- memcpy(vport->fc_nodename.u.wwn, vport->fc_sparam.nodeName.u.wwn, 8);
- size = strnlen(fc_vport->symbolic_name, LPFC_VNAME_LEN);
- if (size) {
- vport->vname = kzalloc(size+1, GFP_KERNEL);
- if (!vport->vname) {
- lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
- "1814 Create VPORT failed. "
- "vname allocation failed.\n");
- rc = VPORT_ERROR;
- lpfc_free_vpi(phba, vpi);
- destroy_port(vport);
- goto error_out;
- }
- memcpy(vport->vname, fc_vport->symbolic_name, size+1);
- }
- if (fc_vport->node_name != 0)
- u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
- if (fc_vport->port_name != 0)
- u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
+ u64_to_wwn(fc_vport->node_name, vport->fc_nodename.u.wwn);
+ u64_to_wwn(fc_vport->port_name, vport->fc_portname.u.wwn);
memcpy(&vport->fc_sparam.portName, vport->fc_portname.u.wwn, 8);
memcpy(&vport->fc_sparam.nodeName, vport->fc_nodename.u.wwn, 8);
@@ -322,17 +384,51 @@ lpfc_vport_create(struct fc_vport *fc_vport, bool disable)
goto error_out;
}
+ /* Create binary sysfs attribute for vport */
+ lpfc_alloc_sysfs_attr(vport);
+
+ /* Set the DFT_LUN_Q_DEPTH accordingly */
+ vport->cfg_lun_queue_depth = phba->pport->cfg_lun_queue_depth;
+
*(struct lpfc_vport **)fc_vport->dd_data = vport;
vport->fc_vport = fc_vport;
+ /*
+ * In SLI4, the vpi must be activated before it can be used
+ * by the port.
+ */
+ if ((phba->sli_rev == LPFC_SLI_REV4) &&
+ (pport->fc_flag & FC_VFI_REGISTERED)) {
+ rc = lpfc_sli4_init_vpi(vport);
+ if (rc) {
+ lpfc_printf_log(phba, KERN_ERR, LOG_VPORT,
+ "1838 Failed to INIT_VPI on vpi %d "
+ "status %d\n", vpi, rc);
+ rc = VPORT_NORESOURCES;
+ lpfc_free_vpi(phba, vpi);
+ goto error_out;
+ }
+ } else if (phba->sli_rev == LPFC_SLI_REV4) {
+ /*
+ * Driver cannot INIT_VPI now. Set the flags to
+ * init_vpi when reg_vfi complete.
+ */
+ vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
+ lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
+ rc = VPORT_OK;
+ goto out;
+ }
+
if ((phba->link_state < LPFC_LINK_UP) ||
- (phba->fc_topology == TOPOLOGY_LOOP)) {
+ (pport->port_state < LPFC_FABRIC_CFG_LINK) ||
+ (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
rc = VPORT_OK;
goto out;
}
if (disable) {
+ lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
rc = VPORT_OK;
goto out;
}
@@ -371,6 +467,7 @@ disable_vport(struct fc_vport *fc_vport)
struct lpfc_hba *phba = vport->phba;
struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
long timeout;
+ struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
ndlp = lpfc_findnode_did(vport, Fabric_DID);
if (ndlp && NLP_CHK_NODE_ACT(ndlp)
@@ -405,6 +502,9 @@ disable_vport(struct fc_vport *fc_vport)
* scsi_host_put() to release the vport.
*/
lpfc_mbx_unreg_vpi(vport);
+ spin_lock_irq(shost->host_lock);
+ vport->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
+ spin_unlock_irq(shost->host_lock);
lpfc_vport_set_state(vport, FC_VPORT_DISABLED);
lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
@@ -418,15 +518,18 @@ enable_vport(struct fc_vport *fc_vport)
struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
struct lpfc_hba *phba = vport->phba;
struct lpfc_nodelist *ndlp = NULL;
+ struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
if ((phba->link_state < LPFC_LINK_UP) ||
- (phba->fc_topology == TOPOLOGY_LOOP)) {
+ (phba->fc_topology == LPFC_TOPOLOGY_LOOP)) {
lpfc_vport_set_state(vport, FC_VPORT_LINKDOWN);
return VPORT_OK;
}
+ spin_lock_irq(shost->host_lock);
vport->load_flag |= FC_LOADING;
vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
+ spin_unlock_irq(shost->host_lock);
/* Use the Physical nodes Fabric NDLP to determine if the link is
* up and ready to FDISC.
@@ -468,6 +571,7 @@ lpfc_vport_delete(struct fc_vport *fc_vport)
struct lpfc_vport *vport = *(struct lpfc_vport **)fc_vport->dd_data;
struct lpfc_hba *phba = vport->phba;
long timeout;
+ bool ns_ndlp_referenced = false;
if (vport->port_type == LPFC_PHYSICAL_PORT) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
@@ -475,6 +579,18 @@ lpfc_vport_delete(struct fc_vport *fc_vport)
"physical host\n");
return VPORT_ERROR;
}
+
+ /* If the vport is a static vport fail the deletion. */
+ if ((vport->vport_flag & STATIC_VPORT) &&
+ !(phba->pport->load_flag & FC_UNLOADING)) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_VPORT,
+ "1837 vport_delete failed: Cannot delete "
+ "static vport.\n");
+ return VPORT_ERROR;
+ }
+ spin_lock_irq(&phba->hbalock);
+ vport->load_flag |= FC_UNLOADING;
+ spin_unlock_irq(&phba->hbalock);
/*
* If we are not unloading the driver then prevent the vport_delete
* from happening until after this vport's discovery is finished.
@@ -506,13 +622,29 @@ lpfc_vport_delete(struct fc_vport *fc_vport)
* initiated after we've disposed of all other resources associated
* with the port.
*/
- if (!scsi_host_get(shost) || !scsi_host_get(shost))
+ if (!scsi_host_get(shost))
return VPORT_INVAL;
- spin_lock_irq(&phba->hbalock);
- vport->load_flag |= FC_UNLOADING;
- spin_unlock_irq(&phba->hbalock);
- kfree(vport->vname);
+ if (!scsi_host_get(shost)) {
+ scsi_host_put(shost);
+ return VPORT_INVAL;
+ }
+ lpfc_free_sysfs_attr(vport);
+
lpfc_debugfs_terminate(vport);
+
+ /*
+ * The call to fc_remove_host might release the NameServer ndlp. Since
+ * we might need to use the ndlp to send the DA_ID CT command,
+ * increment the reference for the NameServer ndlp to prevent it from
+ * being released.
+ */
+ ndlp = lpfc_findnode_did(vport, NameServer_DID);
+ if (ndlp && NLP_CHK_NODE_ACT(ndlp)) {
+ lpfc_nlp_get(ndlp);
+ ns_ndlp_referenced = true;
+ }
+
+ /* Remove FC host and then SCSI host with the vport */
fc_remove_host(lpfc_shost_from_vport(vport));
scsi_remove_host(lpfc_shost_from_vport(vport));
@@ -553,7 +685,7 @@ lpfc_vport_delete(struct fc_vport *fc_vport)
if (ndlp && NLP_CHK_NODE_ACT(ndlp) &&
ndlp->nlp_state == NLP_STE_UNMAPPED_NODE &&
phba->link_state >= LPFC_LINK_UP &&
- phba->fc_topology != TOPOLOGY_LOOP) {
+ phba->fc_topology != LPFC_TOPOLOGY_LOOP) {
if (vport->cfg_enable_da_id) {
timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
if (!lpfc_ns_cmd(vport, SLI_CTNS_DA_ID, 0, 0))
@@ -563,7 +695,7 @@ lpfc_vport_delete(struct fc_vport *fc_vport)
lpfc_printf_log(vport->phba, KERN_WARNING,
LOG_VPORT,
"1829 CT command failed to "
- "delete objects on fabric. \n");
+ "delete objects on fabric\n");
}
/* First look for the Fabric ndlp */
ndlp = lpfc_findnode_did(vport, Fabric_DID);
@@ -576,13 +708,14 @@ lpfc_vport_delete(struct fc_vport *fc_vport)
/* Indicate free memory when release */
NLP_SET_FREE_REQ(ndlp);
} else {
- if (!NLP_CHK_NODE_ACT(ndlp))
+ if (!NLP_CHK_NODE_ACT(ndlp)) {
ndlp = lpfc_enable_node(vport, ndlp,
NLP_STE_UNUSED_NODE);
if (!ndlp)
goto skip_logo;
+ }
- /* Remove ndlp from vport npld list */
+ /* Remove ndlp from vport list */
lpfc_dequeue_node(vport, ndlp);
spin_lock_irq(&phba->ndlp_lock);
if (!NLP_CHK_FREE_REQ(ndlp))
@@ -595,6 +728,17 @@ lpfc_vport_delete(struct fc_vport *fc_vport)
}
spin_unlock_irq(&phba->ndlp_lock);
}
+
+ /*
+ * If the vpi is not registered, then a valid FDISC doesn't
+ * exist and there is no need for a ELS LOGO. Just cleanup
+ * the ndlp.
+ */
+ if (!(vport->vpi_state & LPFC_VPI_REGISTERED)) {
+ lpfc_nlp_put(ndlp);
+ goto skip_logo;
+ }
+
vport->unreg_vpi_cmpl = VPORT_INVAL;
timeout = msecs_to_jiffies(phba->fc_ratov * 2000);
if (!lpfc_issue_els_npiv_logo(vport, ndlp))
@@ -602,7 +746,20 @@ lpfc_vport_delete(struct fc_vport *fc_vport)
timeout = schedule_timeout(timeout);
}
+ if (!(phba->pport->load_flag & FC_UNLOADING))
+ lpfc_discovery_wait(vport);
+
skip_logo:
+
+ /*
+ * If the NameServer ndlp has been incremented to allow the DA_ID CT
+ * command to be sent, decrement the ndlp now.
+ */
+ if (ns_ndlp_referenced) {
+ ndlp = lpfc_findnode_did(vport, NameServer_DID);
+ lpfc_nlp_put(ndlp);
+ }
+
lpfc_cleanup(vport);
lpfc_sli_host_down(vport);
@@ -615,8 +772,10 @@ skip_logo:
* Completion of unreg_vpi (lpfc_mbx_cmpl_unreg_vpi)
* does the scsi_host_put() to release the vport.
*/
- lpfc_mbx_unreg_vpi(vport);
- }
+ if (lpfc_mbx_unreg_vpi(vport))
+ scsi_host_put(shost);
+ } else
+ scsi_host_put(shost);
lpfc_free_vpi(phba, vport->vpi);
vport->work_port_events = 0;
@@ -635,14 +794,16 @@ lpfc_create_vport_work_array(struct lpfc_hba *phba)
struct lpfc_vport *port_iterator;
struct lpfc_vport **vports;
int index = 0;
- vports = kzalloc((phba->max_vpi + 1) * sizeof(struct lpfc_vport *),
+ vports = kzalloc((phba->max_vports + 1) * sizeof(struct lpfc_vport *),
GFP_KERNEL);
if (vports == NULL)
return NULL;
spin_lock_irq(&phba->hbalock);
list_for_each_entry(port_iterator, &phba->port_list, listentry) {
+ if (port_iterator->load_flag & FC_UNLOADING)
+ continue;
if (!scsi_host_get(lpfc_shost_from_vport(port_iterator))) {
- lpfc_printf_vlog(port_iterator, KERN_WARNING, LOG_VPORT,
+ lpfc_printf_vlog(port_iterator, KERN_ERR, LOG_VPORT,
"1801 Create vport work array FAILED: "
"cannot do scsi_host_get\n");
continue;
@@ -659,7 +820,84 @@ lpfc_destroy_vport_work_array(struct lpfc_hba *phba, struct lpfc_vport **vports)
int i;
if (vports == NULL)
return;
- for (i=0; vports[i] != NULL && i <= phba->max_vpi; i++)
+ for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
scsi_host_put(lpfc_shost_from_vport(vports[i]));
kfree(vports);
}
+
+
+/**
+ * lpfc_vport_reset_stat_data - Reset the statistical data for the vport
+ * @vport: Pointer to vport object.
+ *
+ * This function resets the statistical data for the vport. This function
+ * is called with the host_lock held
+ **/
+void
+lpfc_vport_reset_stat_data(struct lpfc_vport *vport)
+{
+ struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
+
+ list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
+ if (!NLP_CHK_NODE_ACT(ndlp))
+ continue;
+ if (ndlp->lat_data)
+ memset(ndlp->lat_data, 0, LPFC_MAX_BUCKET_COUNT *
+ sizeof(struct lpfc_scsicmd_bkt));
+ }
+}
+
+
+/**
+ * lpfc_alloc_bucket - Allocate data buffer required for statistical data
+ * @vport: Pointer to vport object.
+ *
+ * This function allocates data buffer required for all the FC
+ * nodes of the vport to collect statistical data.
+ **/
+void
+lpfc_alloc_bucket(struct lpfc_vport *vport)
+{
+ struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
+
+ list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
+ if (!NLP_CHK_NODE_ACT(ndlp))
+ continue;
+
+ kfree(ndlp->lat_data);
+ ndlp->lat_data = NULL;
+
+ if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
+ ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
+ sizeof(struct lpfc_scsicmd_bkt),
+ GFP_ATOMIC);
+
+ if (!ndlp->lat_data)
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
+ "0287 lpfc_alloc_bucket failed to "
+ "allocate statistical data buffer DID "
+ "0x%x\n", ndlp->nlp_DID);
+ }
+ }
+}
+
+/**
+ * lpfc_free_bucket - Free data buffer required for statistical data
+ * @vport: Pointer to vport object.
+ *
+ * Th function frees statistical data buffer of all the FC
+ * nodes of the vport.
+ **/
+void
+lpfc_free_bucket(struct lpfc_vport *vport)
+{
+ struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
+
+ list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
+ if (!NLP_CHK_NODE_ACT(ndlp))
+ continue;
+
+ kfree(ndlp->lat_data);
+ ndlp->lat_data = NULL;
+ }
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-09 06:23:35 +0000