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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
commite5fd91f1ef340da553f7a79da9540c3db711c937 (patch)
treeb11842027dc6641da63f4bcc524f8678263304a3 /drivers/scsi/lpfc/lpfc_hbadisc.c
parent2a9b0348e685a63d97486f6749622b61e9e3292f (diff)
Linux-libre 4.2-gnu
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_hbadisc.c')
-rw-r--r--drivers/scsi/lpfc/lpfc_hbadisc.c181
1 files changed, 98 insertions, 83 deletions
diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c
index 2500f15d4..ce96d5bf8 100644
--- a/drivers/scsi/lpfc/lpfc_hbadisc.c
+++ b/drivers/scsi/lpfc/lpfc_hbadisc.c
@@ -106,6 +106,7 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
struct lpfc_rport_data *rdata;
struct lpfc_nodelist * ndlp;
struct lpfc_vport *vport;
+ struct Scsi_Host *shost;
struct lpfc_hba *phba;
struct lpfc_work_evt *evtp;
int put_node;
@@ -146,48 +147,32 @@ lpfc_dev_loss_tmo_callbk(struct fc_rport *rport)
if (ndlp->nlp_state == NLP_STE_MAPPED_NODE)
return;
- if (ndlp->nlp_type & NLP_FABRIC) {
-
- /* If the WWPN of the rport and ndlp don't match, ignore it */
- if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn)) {
- lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
- "6789 rport name %lx != node port name %lx",
- (unsigned long)rport->port_name,
- (unsigned long)wwn_to_u64(
- ndlp->nlp_portname.u.wwn));
- put_node = rdata->pnode != NULL;
- put_rport = ndlp->rport != NULL;
- rdata->pnode = NULL;
- ndlp->rport = NULL;
- if (put_node)
- lpfc_nlp_put(ndlp);
- put_device(&rport->dev);
- return;
- }
-
- put_node = rdata->pnode != NULL;
- put_rport = ndlp->rport != NULL;
- rdata->pnode = NULL;
- ndlp->rport = NULL;
- if (put_node)
- lpfc_nlp_put(ndlp);
- if (put_rport)
- put_device(&rport->dev);
- return;
- }
+ if (rport->port_name != wwn_to_u64(ndlp->nlp_portname.u.wwn))
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
+ "6789 rport name %llx != node port name %llx",
+ rport->port_name,
+ wwn_to_u64(ndlp->nlp_portname.u.wwn));
evtp = &ndlp->dev_loss_evt;
- if (!list_empty(&evtp->evt_listp))
+ if (!list_empty(&evtp->evt_listp)) {
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
+ "6790 rport name %llx dev_loss_evt pending",
+ rport->port_name);
return;
+ }
- evtp->evt_arg1 = lpfc_nlp_get(ndlp);
- ndlp->nlp_add_flag |= NLP_IN_DEV_LOSS;
+ shost = lpfc_shost_from_vport(vport);
+ spin_lock_irq(shost->host_lock);
+ ndlp->nlp_flag |= NLP_IN_DEV_LOSS;
+ spin_unlock_irq(shost->host_lock);
- spin_lock_irq(&phba->hbalock);
/* We need to hold the node by incrementing the reference
* count until this queued work is done
*/
+ evtp->evt_arg1 = lpfc_nlp_get(ndlp);
+
+ spin_lock_irq(&phba->hbalock);
if (evtp->evt_arg1) {
evtp->evt = LPFC_EVT_DEV_LOSS;
list_add_tail(&evtp->evt_listp, &phba->work_list);
@@ -215,22 +200,24 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
struct fc_rport *rport;
struct lpfc_vport *vport;
struct lpfc_hba *phba;
+ struct Scsi_Host *shost;
uint8_t *name;
int put_node;
- int put_rport;
int warn_on = 0;
int fcf_inuse = 0;
rport = ndlp->rport;
+ vport = ndlp->vport;
+ shost = lpfc_shost_from_vport(vport);
+
+ spin_lock_irq(shost->host_lock);
+ ndlp->nlp_flag &= ~NLP_IN_DEV_LOSS;
+ spin_unlock_irq(shost->host_lock);
- if (!rport) {
- ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
+ if (!rport)
return fcf_inuse;
- }
- rdata = rport->dd_data;
name = (uint8_t *) &ndlp->nlp_portname;
- vport = ndlp->vport;
phba = vport->phba;
if (phba->sli_rev == LPFC_SLI_REV4)
@@ -244,6 +231,13 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
"3182 dev_loss_tmo_handler x%06x, rport %p flg x%x\n",
ndlp->nlp_DID, ndlp->rport, ndlp->nlp_flag);
+ /*
+ * lpfc_nlp_remove if reached with dangling rport drops the
+ * reference. To make sure that does not happen clear rport
+ * pointer in ndlp before lpfc_nlp_put.
+ */
+ rdata = rport->dd_data;
+
/* Don't defer this if we are in the process of deleting the vport
* or unloading the driver. The unload will cleanup the node
* appropriately we just need to cleanup the ndlp rport info here.
@@ -256,14 +250,12 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
ndlp->nlp_sid, 0, LPFC_CTX_TGT);
}
put_node = rdata->pnode != NULL;
- put_rport = ndlp->rport != NULL;
rdata->pnode = NULL;
ndlp->rport = NULL;
- ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
if (put_node)
lpfc_nlp_put(ndlp);
- if (put_rport)
- put_device(&rport->dev);
+ put_device(&rport->dev);
+
return fcf_inuse;
}
@@ -275,28 +267,21 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
*name, *(name+1), *(name+2), *(name+3),
*(name+4), *(name+5), *(name+6), *(name+7),
ndlp->nlp_DID);
- ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
return fcf_inuse;
}
- if (ndlp->nlp_type & NLP_FABRIC) {
- /* We will clean up these Nodes in linkup */
- put_node = rdata->pnode != NULL;
- put_rport = ndlp->rport != NULL;
- rdata->pnode = NULL;
- ndlp->rport = NULL;
- ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
- if (put_node)
- lpfc_nlp_put(ndlp);
- if (put_rport)
- put_device(&rport->dev);
+ put_node = rdata->pnode != NULL;
+ rdata->pnode = NULL;
+ ndlp->rport = NULL;
+ if (put_node)
+ lpfc_nlp_put(ndlp);
+ put_device(&rport->dev);
+
+ if (ndlp->nlp_type & NLP_FABRIC)
return fcf_inuse;
- }
if (ndlp->nlp_sid != NLP_NO_SID) {
warn_on = 1;
- /* flush the target */
- ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring],
ndlp->nlp_sid, 0, LPFC_CTX_TGT);
}
@@ -321,16 +306,6 @@ lpfc_dev_loss_tmo_handler(struct lpfc_nodelist *ndlp)
ndlp->nlp_state, ndlp->nlp_rpi);
}
- put_node = rdata->pnode != NULL;
- put_rport = ndlp->rport != NULL;
- rdata->pnode = NULL;
- ndlp->rport = NULL;
- ndlp->nlp_add_flag &= ~NLP_IN_DEV_LOSS;
- if (put_node)
- lpfc_nlp_put(ndlp);
- if (put_rport)
- put_device(&rport->dev);
-
if (!(vport->load_flag & FC_UNLOADING) &&
!(ndlp->nlp_flag & NLP_DELAY_TMO) &&
!(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
@@ -1802,7 +1777,7 @@ lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
dma_addr_t phys_addr;
struct lpfc_mbx_sge sge;
struct lpfc_mbx_read_fcf_tbl *read_fcf;
- uint32_t shdr_status, shdr_add_status;
+ uint32_t shdr_status, shdr_add_status, if_type;
union lpfc_sli4_cfg_shdr *shdr;
struct fcf_record *new_fcf_record;
@@ -1823,9 +1798,11 @@ lpfc_sli4_fcf_rec_mbox_parse(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
lpfc_sli_pcimem_bcopy(shdr, shdr,
sizeof(union lpfc_sli4_cfg_shdr));
shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
+ if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
if (shdr_status || shdr_add_status) {
- if (shdr_status == STATUS_FCF_TABLE_EMPTY)
+ if (shdr_status == STATUS_FCF_TABLE_EMPTY ||
+ if_type == LPFC_SLI_INTF_IF_TYPE_2)
lpfc_printf_log(phba, KERN_ERR, LOG_FIP,
"2726 READ_FCF_RECORD Indicates empty "
"FCF table.\n");
@@ -3868,11 +3845,11 @@ out:
if (vport->port_state < LPFC_VPORT_READY) {
/* Link up discovery requires Fabric registration. */
- lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0); /* Do this first! */
lpfc_ns_cmd(vport, SLI_CTNS_RNN_ID, 0, 0);
lpfc_ns_cmd(vport, SLI_CTNS_RSNN_NN, 0, 0);
lpfc_ns_cmd(vport, SLI_CTNS_RSPN_ID, 0, 0);
lpfc_ns_cmd(vport, SLI_CTNS_RFT_ID, 0, 0);
+ lpfc_ns_cmd(vport, SLI_CTNS_RFF_ID, 0, 0);
/* Issue SCR just before NameServer GID_FT Query */
lpfc_issue_els_scr(vport, SCR_DID, 0);
@@ -3918,9 +3895,17 @@ lpfc_register_remote_port(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
* registered port, drop the reference that we took the last time we
* registered the port.
*/
- if (ndlp->rport && ndlp->rport->dd_data &&
- ((struct lpfc_rport_data *) ndlp->rport->dd_data)->pnode == ndlp)
- lpfc_nlp_put(ndlp);
+ rport = ndlp->rport;
+ if (rport) {
+ rdata = rport->dd_data;
+ /* break the link before dropping the ref */
+ ndlp->rport = NULL;
+ if (rdata && rdata->pnode == ndlp)
+ lpfc_nlp_put(ndlp);
+ rdata->pnode = NULL;
+ /* drop reference for earlier registeration */
+ put_device(&rport->dev);
+ }
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
"rport add: did:x%x flg:x%x type x%x",
@@ -4296,9 +4281,9 @@ lpfc_drop_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
if (vport->phba->sli_rev == LPFC_SLI_REV4) {
lpfc_cleanup_vports_rrqs(vport, ndlp);
lpfc_unreg_rpi(vport, ndlp);
- } else {
- lpfc_nlp_put(ndlp);
}
+
+ lpfc_nlp_put(ndlp);
return;
}
@@ -4510,7 +4495,7 @@ lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
LPFC_MBOXQ_t *mbox;
- int rc;
+ int rc, acc_plogi = 1;
uint16_t rpi;
if (ndlp->nlp_flag & NLP_RPI_REGISTERED ||
@@ -4543,14 +4528,20 @@ lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
mbox->context1 = lpfc_nlp_get(ndlp);
mbox->mbox_cmpl =
lpfc_sli4_unreg_rpi_cmpl_clr;
+ /*
+ * accept PLOGIs after unreg_rpi_cmpl
+ */
+ acc_plogi = 0;
} else
mbox->mbox_cmpl =
lpfc_sli_def_mbox_cmpl;
}
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
- if (rc == MBX_NOT_FINISHED)
+ if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool);
+ acc_plogi = 1;
+ }
}
lpfc_no_rpi(phba, ndlp);
@@ -4558,8 +4549,11 @@ lpfc_unreg_rpi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
ndlp->nlp_rpi = 0;
ndlp->nlp_flag &= ~NLP_RPI_REGISTERED;
ndlp->nlp_flag &= ~NLP_NPR_ADISC;
+ if (acc_plogi)
+ ndlp->nlp_flag &= ~NLP_LOGO_ACC;
return 1;
}
+ ndlp->nlp_flag &= ~NLP_LOGO_ACC;
return 0;
}
@@ -4761,6 +4755,7 @@ lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
struct lpfc_hba *phba = vport->phba;
struct lpfc_rport_data *rdata;
+ struct fc_rport *rport;
LPFC_MBOXQ_t *mbox;
int rc;
@@ -4798,14 +4793,24 @@ lpfc_nlp_remove(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
lpfc_cleanup_node(vport, ndlp);
/*
- * We can get here with a non-NULL ndlp->rport because when we
- * unregister a rport we don't break the rport/node linkage. So if we
- * do, make sure we don't leaving any dangling pointers behind.
+ * ndlp->rport must be set to NULL before it reaches here
+ * i.e. break rport/node link before doing lpfc_nlp_put for
+ * registered rport and then drop the reference of rport.
*/
if (ndlp->rport) {
- rdata = ndlp->rport->dd_data;
+ /*
+ * extra lpfc_nlp_put dropped the reference of ndlp
+ * for registered rport so need to cleanup rport
+ */
+ lpfc_printf_vlog(vport, KERN_WARNING, LOG_NODE,
+ "0940 removed node x%p DID x%x "
+ " rport not null %p\n",
+ ndlp, ndlp->nlp_DID, ndlp->rport);
+ rport = ndlp->rport;
+ rdata = rport->dd_data;
rdata->pnode = NULL;
ndlp->rport = NULL;
+ put_device(&rport->dev);
}
}
@@ -4833,9 +4838,19 @@ lpfc_matchdid(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
if (matchdid.un.b.id == ndlpdid.un.b.id) {
if ((mydid.un.b.domain == matchdid.un.b.domain) &&
(mydid.un.b.area == matchdid.un.b.area)) {
+ /* This code is supposed to match the ID
+ * for a private loop device that is
+ * connect to fl_port. But we need to
+ * check that the port did not just go
+ * from pt2pt to fabric or we could end
+ * up matching ndlp->nlp_DID 000001 to
+ * fabric DID 0x20101
+ */
if ((ndlpdid.un.b.domain == 0) &&
(ndlpdid.un.b.area == 0)) {
- if (ndlpdid.un.b.id)
+ if (ndlpdid.un.b.id &&
+ vport->phba->fc_topology ==
+ LPFC_TOPOLOGY_LOOP)
return 1;
}
return 0;